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MITIGATION FILE #1
California Regionalcentral·WatervalleyQUalitYRegion Control Board O Terry Tamminen Robert Schneider, Chair Arnold Schwarzenegger Secretary for Fresno Branch Office Governor En viromnental Intemet Address: http ://www.swrcb.ca.gov/-rwqcb5 Protection 1685 E Street, Fresno, California 93706-2020 Phone (559) 445-5116 · FAX (559) 445-5910 10 June 2004 " RWQCB Case No. 5T15000619 Mr. Ki Chu Yi _~-~ ~-_Mr.~F, ast~Ser~v.i.ce_Station=.~= ..... 600 Brundage 'Lane Bakersfield, California 93304 -UNDERGROUND STORAGE TANK RELEASE, MR. FAST SER I/ICE STATION, 600 BR UNDA GE LANE, BAKERSFIELD, KERN COUNTY You 'submitted Prot~osal to Iml~lement Low-Flow Groundwater Air Sl~arging... (Proposal) dated 17 May 2004 and prepared by E2C Remediation, LLC, Bakersfield (E2C). The Proposal describes air sparging specifications and procedures for the investigation of volatile soil vapor near on-site and off-site structures. We requested the Proposal by our telephone conversation xEith E2C on 14 May 2004. We approve the proposed soil vapor investigation. E2C informed us that ai{- sparging specifications and procedures will be detailed in'a separate work plan. We request that you submit this work plan. Continue quarterly groundwater monitoring. Submit a work plan for investigation to determine the vertical extent of impacted groundwater and the second quarter 2004 groundwater monitoring report. A summary of the Proposal and our comments follow. Proposal Summary .... _E2C _will ~mplement low-flow mr spargmg to complete groundwater remed~at~on on- and off-site. Air will ~b~- ihject~d {~to {he-hc~uife~'at 10~t6' i 2' pOundi per gq~hr-e inch affd=-~t fib¢~ rate- of:1 to~9 gtandard' cubic feet per minute using a 7.5-horsepower air compressor on-site and a 1 O-horsepower air compressor off-site. E2C anticipates that the resulting increase in dissolved oxygen will cause increased biodegradation of gasoline constituents. E2C will conduct an investigation to determine the potential for gasoline soil vapor migration into on- and off-site structures. E2C will install and collect samples from two vapor sampling points on-site near the Mr. Fast facilitybuilding and two vapor sampling points off-site near residences sOuth of Brundage Lane and West of Berneta Avenue. Each sampling point will be constructed in a manually-driven auger boring using two-inch diameter polyvinyl chloride (PVC).ca_sing screened from 3 to 4 feet below ground surface (bgs), a sandpack of #3 Lonestar sand, a hydrated bentonite seal, and 'a concrete well monument. An end cap equipped with a vapor sampling port will be sealed over the casing end. California Environmental Protection Agency ~ Recycled Paper Mr2 Ki Chu Yi Vapor sampl'es will be Collected weekly using an air evacuation pump. Sampling will occur after five well.volumes of air have been removed. Samples will be analyzed for total petroleum hY..dr0carbons as gasoline (TPH,g) by M4dified EPA Method TO3 and benzene~ toluene, ett/ylbenzen'e,' and X~le. nes (BTEX) by CARB Method 410. 'Volatile vapor concentration will also be measured.weekly in the field' using a photoionization detector (PID). If warranted, vapor concentrations will be.measured only with the PID after two sampling events. Analytical data. will be submitted to the Regional Board verbally or by email as received and .w, ill be tabulated for presentation in quarterly groundwater monitoring reports. If Volatile vapor concentrations' are detected, the air sparging system will be shut down and E2C will evaluate mitigation measures. Comments .: ; '. We approve the proposdd-g'6il' vap-6~-~fivestig'ation. We request that an~tlYtiCai re~'~rts as well as tabulated data be submitted in groundwater monitoring reports. Sampling frequency may be reduced to quarterly after two weekly samPling events if volatile vapor concentrations are not detected. Wb request that quarterly samples be analyzed in the laboratory. Continue quarterly grou_n_dwater monitoring. Submit the second quarter 2004 groundwater monitoring , report by 2 August 2004. E2C indicated during a telephone cOnversation on 14 May 2004 that air sparging system specifications' and Procedures would be provided in a separate work'pl~an. Although the Proposal is titled Proposal to /mplement LoW-.Flow Ai~' Sparging..., the air sparging system is only briefly mentioned. We expect that' additional information and site maps depicting' the· operating sparge points, monitoring procedures, system operation strategy will be provided. The additional information may be submitted as a letter wi~h supporting maps and figures. We request that E2C submit the air sparging system specifications and procedures by 15 July 2004. By our letter dated 26 August 2003, we stated that we consider it'necessary to:further investigate potential contaminant flow pathways beneath the present shallow monitoring network. We requested that you submit a work plan addendum to install a deep monitoring network beneath the present shallow netwgrk.' ¢.t~least f~ur~deep-m~nit~r.ing~¢~.~s-s~eened~t~deter.m~ne~t~xe-verti~ca~e~t~nt-6f.i~n--~-Z~d-'~-~'~'--': ----~'--' groundwater along the length of th'e known plume and, a sentinel well south of State Highway 58 were to be proposed in a work plan addendum to be submitted by 30 October 2003.. The work plan is overdue. E2C has indicated that they Wish to discuss or amend the scope of this investigation.. We request that E2C contact us by 15 July.2004 to dfscuss their concerns. V:\uGTXPrgjectsXJDW_'filesX2004 Co~5*6spondence\City of Bakersfield Cases\Mr. Fast VprMtring WP 5-04.doc Mr. Ki Chu Yi - 3 - 10 June 2004 Please contact this office at least five days in advance of fieldwork. Should you have any questions regarding this matter, please contact me at (559) 445-5504. JOHN D. WHITING ' Engineering Geologist R.G. No. 5951 cc: Ms. Barbara Rempel, UST Cleanup Fundl Sacramento ~ Mr. Howard Wines IH, Bakersfield Fire Department, BakersfielXd~ Mr. William Lawson, E2C Remediation, LLC, Bakersfield File:UST/Kern/Mr. Fast Service Station/600 Brundage Lane, Bakersfield/5T15000 V:\UGTkProjectsUDW_filesk2004 Correspondence\City of Bakersfield CaseskMr. Fast VprMtring WP 5-04.doc May 17, 2004 dohn Whitin9 Associate Engineerin9 Geologist California Regional Water Quality Control Board Central Valley Re~jion 3614 Ashlan Avenue Fresno, CA 93726 Proposal to Implement Low-Flow Groundwater Air Spar§lng Underground Storage Tank Release, Mr. Fast Service Station, 600 Brundage Lane, Bakersfield, Kern County Dear Mr. Whiting: Pursuant to our conversation this date, E2C Remediation (E2C) proposes to implement Iow-flow groundwater air sparging at the above captioned site (Site). Scope of Services Groundwater ,Air Sparging Both of the existing (on- and off-site) groundwater air sparge systems will be used for Iow-flow groundwater air sparging. Air will be introduced into groundwater at 10-12 psi at a flow rate of 1-2 SCFM via a Curtis-Thompson 7.5-hp air compressor for the on-site system and a Curtis- Thompson 10-hp air compressor for the off-site system. Introduction of air into the groundwater will provide an increase in dissolved oxygen 'content to enhance microbial degradation of fuel hydrocarbons. Install Vapor Points E2C will install vapor monitoring points to verify that volatilized fuel hydrocarbons do not migrate. into the Mr. Fast Mini-Market in the onsite area or the residences adjacent to the offsite area (see Figure 1 attached for locations of monitoring points). Two (2) monitoring points (four total) are proposed for each area. Vapor points will be installed via hand auger and vapor wells will be set as depicted in Figure 2 attached. Vapor Monitoring Once the vapor points are set, initial vapor samples will be collected with subsequent sampling on a weekly basis. Vapor samples will be collected in the following manner: · Approximately five (5) volumes of air will be evacuated from the a vapor well using an air evacuation pump; Environmental Engineering Consulting & Remediotion, Inc. dba E~C Remediation 5300 Woodmere Drive, Suite105, Bakersfield, CA 93313 p: 661.831.6906 f: 661.831.6234 Project Number 1601BK04 MCy 17. 2004 · A sample will then be collected via the pump into a Tedlar® bag; · Each sample will be labeled and annotated on a Chain-of-Custody and placed in a transport container that .does not allow in light; and · The samples ~vill be transported with the Chain-of-Custody to the analytical laboratory: . Note: Field measurements will also be collected each event using a flame ionization detector (FID). If Tedlar® bag data warrant, after two (2) weekly monitoring ev~ents, future measurements will be made using only the field FID. VaPor chemical Analyses Tedlar~ bag samples will be analyzed for the following constituents using the appropriate EPA Method: · TPHg using Modified EPA Method TO3; · BTEX using Modified CARB Method 410; and when the field FID is used vapor measurements will be in total volatile hydrocarbons in parts per million by volume (ppmv). Status Reporting Vapor data will continuously be evaluated to verify that fuel hydrocarbon vapors are not intruding into occupied buildings, the store onsite and the two (2) residences in the offsite area. If vapors are found in any of the vapor points, the air sparge system will be shut down and mitigation options will be evaluated. Vapor data will be reported orally, or by email, as it is received from the analytical laboratory to the LIA. For documentation purposes, a tabularized summary of vapor monitoring data will be included in Quarterly Monitoring Reports. Scheduling Immediately upon approval of this Workplan, E2C will install the vapor points and collect the initial vapor samples. The air sparge system will then be started followed by weekly vapor sampling. If you have' any questions regarding this request, do not hesitate to call either of the undersigned at (661) 831-6906. WilliamRespectfully Submitted,,/~ ~ .~~--"vv"%' ' -" l- Senior Geologist " ~, ~ % alwin, R.G.1 t/30/02#4779 ~r~cjeologist 717 ~C: Mr. & Mrs. Ki Chu Yi, ~ ~~: Howard Wines, City of BE ~epartment Attachments: Figure 1 Site Plan showing Vapor Points Figure 2 Vapor Point Well Diagram '~'~ E.~C Remediation 2 LEGEND Monitoring Welt Location -(~ Monitoring Well Location Shallow · .~ Deep Monitoring Well Location (~ Abandoned WellLocation '~' V~apor Extraction Well Location [] Air Sparge Well Location I--- BM Benchmark MW-2 VP-1 ~ eu.d~.g VE-2V ·' · VP-2 ' JJ VE'I'V A~1 VE-4 ~¢--~.- MW-4 II I MW-6 MW_~,,, M'~'W-1 '~ ~ Vapor Monitoring Point --- + ~ BM Elevation r- .,-,?W~ VE-3 ~396.4, ,~w-6 - v,--o vD ~ [] 92;1 West; 22;1 South i I IAS.2~AS.3 BRUNDAGE LANE MW-9 AS-4 MW-10 VE-6 E-7 I AS.6 i.-i / AS-7 MW-12 MW- 11R_zJ:,..,~ VP-3 ·-(~- VP-4 · 'f' ~MW-11 IHousEI I HOUSE IVE'8 MW.14 AS-8 E MW-15D N, FIG STREET MW-~5S '¢'F'~-~- _~W-16 '55--~W'lTD MW-17S I 401 I FREEW AY RIGHT-OF-W AY SCALE: 1 inch = 80 feet E2C Remerlir~tion MR. FAST SERVICE STATION 600 BRUNDAGE LANE FIGURE 5300 Woodmere Dr,, Suite 105 BAKERSFIELD, CA, Bakersfield, California 93313 1 Telephone: (661) 831-6906 Facsimile: (661)831-6234 SITE PLAN WITH VAPOR POINTS Sealed Cap with vapor sampling port Concrete Well Monument Hydrated Bentonite Lonestar #3 Sand, or equivalent Schedule 40 PVC, 2-inch diameter, 0.020 Slot Size Slip Cap NOT TO SCALE E2C Remediation MR. FAST SERVICE STATION FIGURE 600 BRUNDAGE LANE ' 5300 Woodmere Dr., Suite 105 BAKERSFIELD, CA. Bakersfield, California 93313 2 Telephone: (661) 831-6906 Facsimile: (661) 831-6234 Vapor Point Diagram January 3(~, 2004 Mr. & Mrs. Ki Chu Yi Mr. Fast Service Station 600 Brundage Lane Bakersfield, CA 93304 Subject: Fourth Quarter 2003 Groundwater. Monitoring Repor.t and Remediation Status Report Mr. Fast Service Station 600 Brundage Lane Bakersfield, California Dear Mr. & Mrs. Yi: E2C Remediation (E2C) has completed Fourth Quarter 2003 Groundwater Monitoring a'ctivities at the property identified as the Mr. Fast Service Station at 600 Brundage Lane (Site) Bakersfield, California. This report documents those activities and presents the results, conclusions and recommendations. In addition, the remediation status report for the Site is preSented. This Report has been 'prepared in response to the California Regional Water Quality Control Board - Central Valley Region letter, dated October 18, 2002. It is a pleasure to be of service to you, should you have any questions regarding this submittal, do not hesitate to call either of the undersigned at 661-831-6906. Respectfully Submitted, E~C~......~~Remediation .~~' Yun Zhang ,~1 n, R.G. #4779 Staff Engineer/Geologist Principal Hydrogeologist ' Reg. Exp. 11/30/04 CC: Mr. John Whiting, R.G. Mr. Howard Wines, R.G Associate Engineering Geologist Hazardous Materials Division California Regional Water Quality Control Board . City of Bakersfield Fire Department Central Valley Region 1715 Chester Avenue 1685 "E" Street Bakersfield, CA 93304 Fresno, CA 93706 Environmental Engineering Consulting & Remediation, Inc. dba E2C Remediation 5300 Woodmere Drive, Suite105, Bakersfield, CA 93313 p: 661.831.6906 f: 661.831.6234 ,! , ~ FOURTH QUARTER 2003 '· GROUNDWATER IV1ONITORING REPORT AND I REIV1EDIATiON STATUS REPORT I MR. FAST SERVICE STATION 600 Brundage Lane Bakersfield, California January'30, 2004 Project Number 1801BK03 Prepared For: EIr. & iVlrs. Ki Chu Yi 600 Brundage Lane Bakersfield, California '1 Prepared By:. I E2C Remediation EnvironmentaFEngineering Consultants I 5300 Woodmere Drive, Suite 105 Bakersfield, CA 93313 I Project Number 1801BK03 Januaw_ 3O. 2004 TABLE OF CONTENTS ' -TABLE OF CONTENTS ..... ........................................................................................................ i LIST OF TABLES .. : ' i LIST OF APPENDICES ................................................................ ............................................ '....i EXECUTIVE SUMMARY 1.0 INTRODUCTION .................................................................................. 4. .1.1 Site Description .............. ................................................. ' . ........................... ' .... 4 1.2 Regional and Site GeolOgy and Hydrogeology ....................... ' .................. 4 1.2.2 Regional Hydro'geology .................. 5 1.2.3 Site Specific Subsurface Stratigraphy and HYdroge01ogy ........................................ 5 2.0 FOURTH QUARTER 2003 GROUNDWATER MONITORING ........................................... 6 2.1 Groundwater Elevations ...... ...................... . ......... . .... 6 2.1.1 'Discussion of Water Table Elevation Data .................................... ' ..... 7 2.2 Groundwater Purging and Sampling .............................................................................. 7 2.3 'Fourth Quarter 2003 Groundwater Analytical Data ......................................................... 7 2.3.1 Discussion of'Groundwater Analytical Data ..... 8 3.0 REMEDIATION STATUS REPORT ~ .............. : .......... :8 3.1 Free-Product Pumping ...................................... ~ ................................. ; ................ ~ ........ 8 3.2 Onsite Remedial Operations .............. ........ . ............................. : ..... i ................................ 8 3.3 Offsite Remedial OPerations ................................................................ - .......................... 9 3.3.1 ,Evaluation of Offsite Remediation Efficiency ......................................................... 10 3.4 Conclusions Regarding Remedial Operations at the Site ....... ' . ........................ 10 3.5 'Remedial Opei'ation Recommendations ............ ~ ................. :.: ...................................... 10 3.5.1 Onsite Remediation System ' 10 3.5.2 Offsite Remediation System. ............................. ~ .................................................. 1 0 4.0 CONCLUSIONS ................. ' · · . ..................................... 11 5.0 RECOMMENDATIONS ..................................................... 11 6.0 LIMITATIONS AND REPORT CERTIFICATION ........... ' ~ ' 12 I I I - . E2C Remediatior~ .. I Project Number 1801BK03 ' Jcnua~_ 30. 2004 I LIST OF FIGURES Figure 1 Site Location Map ~ I .'Figure 2 Site Plan Figure 3 " 'Fourth Quarter 2003 Groundwater Gradient Plot Figure 4 Fourth Quarter 2003 Groundwater Benzene Isoconcentration Plot I Figure 5 Fourth Quarter 2003 Groundwater _TPHg Isoconcentration Plot I LIST OF TABLES Table 1 Summary of Fourth Quarter 2003 Groundwater Monitoring Data i Table 2 Summary of Historical Groundwater Elevation Data Table 3' Summary of HiStOrical Groundwater Analytical Data Table 4 Summary of VES Monitoring Data I Table 5 Summary of Onsite Hydrocarbon Mass' Removed using VE/GASS (based on influent concentrations) .Table 6 Summary of Onsite Hydrocarbon Mass Removed using VE/GASS (based on 'l %LEL)' .. Table 7 Summary of Offsite Hydrocarbon. Mass Removed using VE/GASS (based on I influent concentrations). Table 8 Summary of Free-Product/Groundwater Pumping I LIST OF APPENDICES Appendix A Fourth Quarter 2003 Groundwater Purge Data Sheets· '.~ I Appendix B .Fourth Quarter 2003 Groundwater Analytical Laboratory Report Appendix C Free,ProduCt/Water Disposal Manifests.~ ii ! 'E2CRemediati°n : . : ii .. Project Number 1801BK03 Jansen_ 30, 2004 ,.. EXECUTIVE. SUMMARY . ' 'On November 11, 2003, E2C Remediation (E2C)conducted Fourth QUarter groundwater monitoring at the Mr. Fast Service Station .property (Site) located at 600' Brundage Lane, Bakersfield, California. This presents' the results of the monitoring activities, groundwater report analytical data, groundwater elevation data, and interpr, etations of current groundwater quality. and flow direction beneath the Site and the immediate vicinity. In additi'on, 'this report documents the of groundwater remediation, at the Site. This report is submitted to progress comply with the directive of the California Regional Water Quality Control Board - Central Valley · Region (RWQCB) dated October 18, 2002. : Summary of Fourth Quarter 2003 Groundwater Analytical Data Groundwater samples were collected from all wells containing water, and the samples were 'transported to a State of California-Certified analytical laboratory for chemical analyses for the following constituents: Total Petroleum HydrocarbOns as gasoline (TPHg) using EPA Method 8015M; Benzene, toluene, ethylbenzene, and total xylenes (BTEX) and five fuel oxygenates of methyl tertiary-butyl ether (MtBE), tertiary-butyl alcohol (TBA), di-isopropyl ether (DIPE), eth'yl tertiary-butyl ether (ETBE), .and tertiary-amyl methyl ether(TAME) using EPA Method 8260B. Based on the analytical datal TPHg remained higti in the area of MW-11R and MW-8, but significant lower than the maximum historical data. Benzene was reported, as non-detect in all wells except MW-16 'at a'concentration of 46 F~g/L..Significant concentrations of toluene, ethylbenzene and xylenes (total) continue to be reported in groundwater samples from wells MW-7, MW-.8, MW-11R, and MW_-12. MtBE has been reported as non-detect in all wells since the First Quarter 2000. The center of'groundwater plume is located in the area of MW-11R with extensive migration to the north in the area of MW-8 and MW-1 and to the south-southeast to In general, the groundwater fuel hydrocarbon concentrations show a significant decreasing trend compared to the. historical datal, though occasional rebounds were reported. This decreasing trend of groundwater fuel hydrocarbon concentrations can.be attributable to two (2)~ processes: 1) Remediation efforts, and 2) an increase in natural attenuation, which is the result of the remediation efforts, specifically the introduction of oxygen into the aquifer using the air sparging system' and the free-product pumping operations. Summary of Remediation Status The remediation efforts at the Site have been consisted of free-product pUmping aCtivities, vapor extraction and groundwater air sparging operations. Free-product pumPing activities have removed a large amount of fuel hydrocarbons from the subsurface and controlled the migration of groundwater plume at the Site. From April 8, 2003 to January 13, 2004, a cumulative .of 36,828 gallons of free-product/water, has removed. Free- product has been redUced to the "sheen" level at MW-7, MW-11R, MW-12 and MW-13 compared to previous quarters. E2C started vapor extraction operations at the Site in April 2002. The influent concentrations were tow for the thermal oxidizer VES machine. During a period of 14 months from April 4, 2002 to June 16, 2003,'a cumulative'of approximately 2,088 pounds of hydrocarbons.was" remoVed from the subsurface. Based on a ratio of-electricity costS per unit mass Of E2C Remedial/on'' · .. . . I Prelect Number 1801BK03 Janua~ 30. 200,~ hydrocarbons removed, the operations of thermal and electric oxidizer VES machines for both onsite and offsite remediation were economically unviable and the maChines were shut down; however, onsite groundwater air sparging operations continued. A permit modification was submitted to the SJVAPCD to replace the offsite VES machine with a GAC system. Based on conversations with the SJVAPCD it has been found that a lengthy public notification and hearing process would be required to convert the onsite remedial system to an alternative system. As such, E2C recommends running the on-site air sparge.system using an air compressor and recommends to continue free-product/groundwater pumping combined with oxygen injection through the sparge manifold for the off-site portion of the plume. Conclusions Based on the data presented in this report, E2C makes the following conclusions:' Overall groundwater elevations'increased approximately 0.15 foot since the Third Quarter 2003; · Groundwater flow at the Site is generally southeast in the onsite area and bends to the south-southeast in the offsite area. The onsite flow direction is predominately controlled by recharging from the canal, whereas the flow direction in the offsite area reverts to the regional flow direction '(i.e., the further from the canal, the more predominate the regional groundwater pattern); , The groundwater gradient in the area between MW-2 (onsite and upgradient .well)' and MW-11R (offsite and downgradient) is significantly flatter (0.025 feet/feet)than the gradient calculated downgradient of MW-11R (MW-11R to MW-15S) (0.15 feet/feet); · The center of groundwater plume is located in the area of MW-11R with extensive migration to the north .in the area of MW-8 and MW-1 (upgradient) and to the south- ,.southeast to MW-16 (downgradient); ,, In general, fuel hydrocarbon concentrations have decreased on- and off-site, which is the result of the remedial operations (vapor extraction and groundwater air sparging). Additionally, the air sparging has enhanced the natural attenuation processes through the addition of oxygen to the aquifer water (this supplies additional ion receptors, thus allowing enhanced microbial of the fuel degradation hydrocarbon compounds); , Influent concentrations to the onsite remediation system declined rapidly after start up indicating a "groundwater-only" contaminant plume. Cycling of the system on a three week off and one week on basis resulted in a significant increase in system influent concentration and 'hydrocarbon removal rate from the Third to Fourth QuarterS 2002; however, inflUent concentrations declined in the First Quarter 2003; ·FOr a one-year period (April 2002 to April 2003), the onsite remediation system removed approximately 2,042 pounds of hydrocarbons from the subsurface; Based on a ratio of electricity costs per unit mass of hydrocarbons removed, the operations of the VES machine for the onsite and offsite remediation were economically unviable and the machines were shut down; however, onsite groundwater air sparging operations continued; and For the off-site portion of the plume, E2C has been conducting free-product/groundwater pumping. As of January 14, 2004, approximately 37,000 gallons had been removed from the off-site portion of the plume. ! ;' I E2C Remediation ' ' 2 I Project Number 180 i BK03 Janua~ 30. 2004 Recommendations Based on the data presented above and the conclusions from this data, E2C makes the following recommendations: [] Continue to conduct groundwater monitoring at the Site on a quarterly basis;' · Analyze groundwater samples for BTEX and five fuel oxygenates using EPA Method 8260B and TPHg using EPA Method 8015M; · Continue uSe of the onsite GASS to oxygenate groundwater and enhance natural degradation of the fuel hydrocarbon compounds; Continue free-product/groundwater pumping in the off-site pOrtion of the plume (MW-7, MW-11R, MW-12 and MW-13) and at on-site wells (MW-1 and MW-8) on a' bi-monthly basis; . Begin utilizing oxygen cylinders to provide oxygen via the off-site air sparge manifold; and · Perform oPerations and maintenance visits for the site-wide remedial system on a weekly basis. This will include service of the on-site compressor, replacement of spent oxygen 'cylinders offsite and necessary in-situ dissoived oxygen concentration measurements to track progress. ! ' I E2C Remediat/on Prqiect Number 1801BK03 Janua~. 30. 2004 1.0. /NTRODUCT/ON ' On November 11, 2003, E2C conducted the Fourth Quarter 2003 groundwater monitoring for the Mr. Fast Service Station located at 600 Brundage Lane (Site), BakerSfield, California. This presents the results of the Fourth Quarter 2003 groundwater monitoring, event and the repOrtremediation statUs for th'e Site. This report presents the results of the work activities described' above 'and includes groundwater analytical and elevation data, and interpretations of current groundwater quality and flow direction beneath the Site and immediate vicinity. This report is prepared to comply with the directive of the California Regional Water Quality Control Board - Central Valley Region (RWQCB) dated October 18, 2002. 1.1 Site Description The site is located at. 600 Brundage Lane in Bakersfield, California (see Figure 1 for Site Iocationmap). The Site is located in the SW 1/4 of SE 1/4, Sec. 31, T29S, R28E, Diablo Base and Meridian. The present property.consists of a rectangular-shaped lot containing one building located in the Northeast corner (see Figure 2 for Site Plan). The building is currently occupied by a small retail business, Mr. Fast Gas & Liquors. Attached to the west side of the building is a fenced in storage area. The property is bordered along.itS northern Side by 1st Street, along its eastern side by T Street (on the South side of Brundage T Street becomes Berneta Avenue), along its southern side by Brundage .L~ane, and along 'its western side by the Kern Island Canal - Central Branch. Residential areas, interspersed with light commercial/industrial areas, are located adjacent to the Site. Vista High School is located approximately 1,000 feet No~th of the Site. Highway 58,' an East-West trending, four-lane divided freeway is located approximately 450 feet south of the Site. 1.2 Regional and.Site Geology and HydrOgeology 1.2.1 Regional GeOlogy The property is located in the south central area of the San Joaquin Valley where the Sierra Nevada, Great Valley, and Coastal Range physiographic provinces meet. The southern end of the Sierra Nevada Province is composed of a~ massive block of igneous and metamorphic rock of Mesozoic and older. This Sierran block, 40 to 100 miles wide and 400 miles long, slopes age five to seven degrees beneath the San Joaquin Valley. The Coastal Range province on the West consists of tectonically deformed and fractured marine and non-marine sedimentary rocks of Jurassic, Cretaceous, and Tertiary age, which dip eastward beneath the Sand Joaquin Valley. The Great Valley province is a broad asymmetrical synclinal trough, which is known as the Sacramento Valley in. the north and the San Joaquin Valley in the south. Beneath the southern San Joaquin Valley floor, the Sierran plutonic and metamorphic rock block is overlain by consolidated marine rocks of Jurassic .and Cretaceous age. These rocks are overlain by continental marine and non-marine sedimentary rocks of Tertiary age, which are comprised of continental depoSits of consolidated to semi-consolidated, foss ferous sandstone, siltstone, and shale which thicken toward the south and West. The Tertiary rocks, in turn, are overlain by unconsolidated continental deposits, which consist of Pliocene to Holocene river and lake sediments comprised of gravels, sands, silts, and clays. Surface"features of the floor of the San Joaquin Valley consist of dissected uplands, alluvial fans, overflow areas, and lake bottoms. Dissected uplands lie. between the mountains and the nearly flat Valley fl°or and are manifest in Iow-lying hills through which perennial and intermittent streams flow. These features consist of reworked older alluvium. The alluvial fans are the sites of active stream deposition of sand and Silts derived from the Sierra Nevada ~and the dissected uplands. The overflow lands and lake bottoms lie in the central part of the Valley where silt and clay accumulate in quiet lake and marsh environments.. 1.2~2 Regional Hydrogeology The Central Valley of California is underlain by a broad,.thick hydrogeologic unit, which consists of soil and rock of varying porosity and permeability. Physical dimensions are 50 miles wide at the widest point in the Valley, 400 miles long, and as much as.2,000 feet deep. 'Recharge to regional aquifers consiSts of infiltration of seaSonal preciPitation and percolation of surface waters. The Valley aquifer of greatest storage, highest qual-ity, .greatest and storage, highest quality, and greatest accessibility for domestic and agricultural use consists of the 'alluvial and lacustrine con'~inental deposits extending to the depths of 1,500 to 2,000 feet beneath the San Joaquin Valley floor. Lith'ologic and hydraulic properties of these sediments are largely the product of the sediment source and the depositional environment.. These range sediments in size from clays to boulders snd include all mixtures between.the extremes. Those of the west side of the Valley are derived largely from the Coastal Ranges, which tend to consist of shales and fine sandstones with limited permeability: The east.sediments are mainly granitic ..~: derived from materials of the Sierra Nevada which are 'generally Coarser and much mOre permeable. Sediments encountered during the boring procedures at the Mr. Fast and adjoining parcels consisted of alluVial deposits comprised of fine-to-coarse grained sands containing quartzite and micas, 'Permeability in .ii these sediments is high. I'"~ Regionally, the depth .to groundwater ranges between 150 an'd 200 feet below grade, according . ::i~i''~ ~to the' 1995.Water Supply Report published by the Kern Co.unty Water Agency in January 1998. ~ Unconfined groundwater,' or perched groundwater, beneath the subject property is significantly because of the site location immediately adjacent shallower than the regional depth, presumably to the unlined Kern Island Canal - Central Branch. In general, the regional hydraulic gradient in the area is towards the northwest. Measurements made within shallow onsite and offsite wells over the course of this' project have shown gradient that the in the perched groundwater beneath the Site has been consistently towards the southeast, which is oblique away from the unlined canal. 1.2.3 Site Specific Subsurface StratigraPhy and Hydrogeology In general, the subSurface at the Site is characterized by approximately 5 feet of silty sand at the surface ~ollowed sand to approximately 50 to 55 feet bgs. 'Silty clays, clayey silts, sandy by silts, and finer-grained silty sands Occur from that depth to approximately 80 feet bgs. I In previous borings for wells (e.g., MW-10), first groundwater was encountered at approximately ,. 47 feet bgs. At the boring for well MW-11R, firs~ groundwater was encountered between_ __46'5 r, and 50 feet bgs. At well MW-12, first groundwater was not encountered until 56.5 to't~u feet I , bgs. PrOject Number 1801BK03 J~r~a~_ 30. 2004 On-site, specifically at wells MW-1 .through MW-8, gro[Jndwater elevations increaSed an average of approximately 2 feet from June to AugUst 2001. During that Same period'of time in · the off-site area of wells MW-7, MW-9, and MW-10 groundwater elevations also increased, an average of approximately 117 feet while at wells MW-11 R and MW-13, groundwater elevations' increased significantly, approximately 7 feet. MW-11R is located approx!mately.90 feet soUth of MW-10 and MW-13 is located approximately 100 feet southeast of'MW-11R in the general downgradient direction. This data indicates that a very steep groundwater gradient exists between MW-10 and. MW-~I.1R with the gradient flattening out somewhat in the area of MW-11R to MW-13. A review of the boring logs for the Site revealed that differences in lithology are the cause for this change in gradient. In the area from wells MW-1 and MW-2 to the area of well MW-10, the top of the groundwater table occurs above the silty layer, which is generallY encountered at apprOximately 50 feet bgs. This suggests that principai groundwater movement occurs on ~top of the silty layer within the coarser-grained materials as flow from the recharge Point. along the Canal until it reaches the · area of well MW-10. upon reaching the area of well MW-10, groundwater then matriculates dc~wn into the silty layer, which has a lower hydraulic conductivity than the coarser materials lying above (i.e., takes longer for the groundwater to move' through the finer grained flow' medium). This transfer from flow in coarser materials to flow in'finer-grained materials creates a steeper~gradient. As expected, groundwater elevations downgradient of the change'in flow medium materials are' . muCh deeper than those upgradient of this change and that area downgradient can experience .,~ a wide fluctuation in levels due to even minor recharge or discharge e[fect. Note: Discharge/recharge conditions ir~ the canal also greatlY affect the gradient beneath the Site. In June 2002 groundwater elevations increased 5 to 7 feet across the Site. This coincided With dredging of the 'canal, which removed fines and allowed for higher recharge into the subsurface. 2.0 FOURTH QUARTER 2003 GROUNDWATER 'MONITORING E2C personnel conducted Fourth Quarter 2003 groundwater monitoring activities on November 11, 2003. These monitoring activities included measuring depths to groundwater, checking · wells for free-productl purging wells, collecting and groundwater samples, 2.1 Groundwater Elevations Prior to purging and sampling, each well was checked for the presence.of free-ProduCt using a clear bailer. Free-product was not present in any wells for this monitoring event. Depth to groundwater was then measured at each well below the top of casing (BTOC) at the north side of'the ~:asing to the nearest O.01-foot using a Solinst water level meter (Table 1 summarizes depth to water measurements). Based on the previous data regarding the Site, measurements were taken at the wells in order· of least impacted location to most impacted location. All downhole equipment was washed in an Alconox .solution and double rinsed with clean Potable water prior to each use and between each well. Groundwater elevations were calculated by subtracting the measured depths to water from the surveyed elevations of the wellheads (see Table I for summary: of Fourth. Quarter 2003 groundwater elevations; see Table 2 for summary of historical groundwater elevations). Based' Number 1801BK0~ Janua~_ 30. 2004 Project on the depth to groundwater measurements, groundwater flow for the Fourth Quarter. 2003 was to the south-southeast at a steep average gradient of 0.025 ft/ft from the site proper to the area of Well MW-12R and at a very steep gradient of 0.15 ft/ft between MW-12R and MW-15S, (see. Figure 3). Groundwater.elevations o,qsite decreased an average of 0.50 foot while offsite groundwater elevations increased an average of 0.47 foot. Overall groundwater elevations' increased an average of 0.15 foot since the Third Quarter 2003. · 2.1.1 Discussion of Water_Table Elevation Data Groundwater flow at the Site is generally southeast in the onsite area and bends to the south- southeast in the offsite area. The onsite flow directiOn is predominately controlled by recharging from the canal,' whereas the flow direction in the offsite area reverts to the regional flow direction (i.e., the further from the canal, the more predominate the regional.groundwater flow pattern becomes). 2.2 GroundWater Purging and Sampling All wells were checked for free-product. Only "sheen" level was reported at wells MW-7, MW- 11R, MW-12 and MW-13. Groundwater was purged at each monitoring well in order to obtain representative groundwater samples.' A minimum of three well casing volumes of'groundwater were removed from each well prior to sampling utilizing a battery-powered submersible pump. A casing volume is calculated by multiplying the height of the freestanding water column in the well by the cross-sectional area of the well casing. During purging,, groundwater parameters of temperature, pH and conductivity were measured as water was pumped from the'wells to verify sufficient purging ~and stable physical parameter measurements on field instruments (see ApPendix A for groundwater purge data sheets). The pump was decontaminated in a solution of Alconox and water and double rinsed with clean potable water before each use. After purging, groundwater at each well was sampled using a new disposable bailer. A. groundwater sample from each well was decanted into three (3) 40-mi volatile organic analysis (VOA) vials. Care was taken to prevent headspace or bubbles in the vials, which Were sealed with Teflon-lined lids. Samples were labeled and placed !n an iced cooler maintained at 4 degrees Centigrade, accompanied with a Chain-of-Custody form for transport to the analYtical laboratory. 2.3 Fourth Quarter 2003 Groundwater Analytical Data Groundwater samples were analyzed at Halcyon Laboratories, Inc. (Certification #1920) of Bakersfield, California for TPHg using EPA Method 8015M, BTEX using EPA Method 8260B, and fuel oxygenate compounds of Di-isopropyl Ether (DIPE), Ethyl Tertiary-Butyl Ether (ETBE), Methyl tertiary-Butyl Ether (MtBE), Tertia'ry-Amyl Methyl' Ether (TAME), and Tertiary-Butyl Alcohol (TBA) using EPA Method 8260B. Appendix B presents the analytical laboratory report. " Laboratory analytical data for the Fourth Quarter 2003 are summarized in Table 1 and along with historical data in Table 3. Groundwater was sampled at all wells that were not dry and did not contain free-product. The results of the groundwater chemical analyses are summarized following: [] Benzene was reported as non-detect (<0.5 p.g/L) at all wells except for MW-16 at a concentration of 46 ~g/L (see Figure 4); , Toluene'was reported from 'five (5) wells at concentrations ranging from a Iow of 12 F.g/L (MW-13 (11 '~g/L in duplicate)) to a high of 20,447 ~g/L (MW-11R); 7 r2c Remediation ' ' NFmber 1801BKO$ J¢nua~_ 30. 2004 Prq(ect ,Ethylbenzene was reporte~J from seven (7) wells at'concentrations ranging from a Iow of 32 pg/L (MW-16) to a .high of 2,700 ~.g/L (MW-11R); ,Xylenes (total) were reported from Seven (7) wells at concentrations ranging from a Iow of 28 ~.g/L (MW-16) to a high of 9,480 ~,g/L (MW~I 1R); ,TPHg were reported from seven (7) wells at concentrations ranging from a Iow of 530 p,g/L (MW-16) to a high of 94,000 tzg/L (MW-11 R) (see Figure 5); ,MtBE was reported' as non-detect (<0.5 pg/L) in all groundwater Sample.s collected for this quarter; . TBA was reported as non-detect (<2~5 ~,g/L) at all wells except for MW-1 at a concentration of 6 ~g/L; and ·DIPE, ETBE, TAME, were reported as non-detect (<0.5 F.g/L) in all groundwater samples collected for this quarter. 2.3.1. Discussion of Groundwater Analytical Data Based on the analytical data, TPHg remained high in the area of MW-11R and MW-8, but significant lower than the maximum historical data. Benzene was reported as non-detect in all wells except MW-16 at a concentration of 46 Izg/L. Significant concentrations of toluene, ethylbenzene and xylenes (total) continue to be reported in groundwater samples from wells MW-7, MW-8, MW-11R, and MW-12. MtBE has been reported as non-detect in all wells since the First Quarter 2000. The center of groundwater plume is located in the area of MW-11R with extensive migration to the north in the area of MW- 8 and MW.-1 and to the south-southeast to MW-16. In general, the groundwater fuel hydrocarbon concentrations show a significant decreasing trend ~compared to the historical data, thoUgh occasional rebounds were reported. This decreasing trend of groundwater fuel hydrocarbon concentrations can be attributable to two (2) processes: 1) Remediation efforts, and 2) an increase in natural attenuation, which is the result of the remediation efforts; specifically the ntroduction of oxygen into the aquifer using the air sparging system and the free-product pumping operations (see Section 3.0). 3.0 REMEDIA TION STATUS REPORT · 'The remediation efforts at the Site have been consisted of free-product pumping activities, vapor extraction and groundwater air sparging operations. 3.1 Free-ProdUct Pumping Free-product pUmping activities have removed a large amount of fuel hydrocarbons from the subsurface and controlled the migration of groundwater plume at the Site. From April 8, 2003 to January 13, 2004, a cumulative of 36,828 gallons of free-product/water was removed. Free- product has been reduced to the "sheen" level at MW-7, MW-11R, MW-12 and MW-13 compared to previous quarters. Table 8 shows a summary of free-product/groundwater pumping activities. 3.2 Onsite Remedial Operations The on-site remedial system originally consisted of soil vapor extraction and groundwater air sparging equipment. Operation of the on-site system Commenced on April 4,'2002. Startup E2C Rernediation 8 Project Number 180 iBK03 ~l~nua~_ 30. 2004 testing lwas performed on April 10, 2002 under the inspection of Mr. Bruce Muir-SJVU^PCD. The initial remediation, progress report for the project was submitted in conjunction with the Second Ouarter 2002 Groundwater Monitpring Report. Moderately. high'influent concentrations and high flow rates were observed at the Onset of the remediation project. Rapid declines in the influent'concentrations Were observed' after approximately 30 days of continuous operation. Significant and rapid declines' in influent concentration are indicative of "groundwater-only" contaminant plumes or can be caused by channeling in the vadose zone. Generally, when channeling is occurring an increase in flow rate and decrease in well field vacuum are observed. E2C field personnel carefully observed · machine operational parameters and did not record significant or flow increases well field vacuum decreases; therefore, the significant decline in influent concentrations i.s likely a result of a "groundwater-only" contaminant plume. In an effort to increase the hydrocarbon removal rate, E2C began cycling (one week on and One week off) the vapor extraction system to determine whether cycling would increase influent concentrations (note: The air sparge system was left on during the vapor extraction system off times). The results clearlY demonstrated that cycling increased influent concentrations. Prior to cycling on May 14, 2002, influent concentrations had dropped to 95 ppmv. After a one-week off cycle, influent concentrations were measured at 300 ppmv at restart, cycling As continued, the results became even more dramatic. On June 17, 2002 influent concentration was measured at 620 ppmv. Hydrocarbon removal rates are a function of influent concentration, flow rate, and run time. FloW rate remained nearly constant, run was halved (due time to cycling) and influent .Concentration.increased by eleven (11) times; therefore, the net result was a 5.5 times increased removal rate over the same elapsed calendar time. 'As these results clearly demonstrated, cYcling of the remediation system at this site· prOduced. significantly higher hydrocarbon removal rates. Therefore, it was E2C's recommendation to continue cycling the system until cycling no longer produced desirable results. Cycling Of the system on a one-week operational and three-week .non-operational basis had resulted in increased influent concentrations and hydrocarbon removal rates in January 2003. In February 2003 hydrocarbon rates again decreased with a subsequent removal rate decrease. In April 2003 it became apparent that the remedial system was using electricity at a rate significantly greater than the resultant units hydrocarbon mass of removed the existing · system was not cost effective for the mass removed). As of April 3, 2003 only approximately' 2,042 pounds of hydrocarbons had been removed from the onsite subsurface. In addition, as cycling of the system was required to even achieve Iow in fluent concentrations, for the twelve. .months of'operational time '(April 2002 to April 2003) the system was in extraction, mode approximately 131 days. · 3.3 Offsite Remedial Operations A Stealth Firecat 250 Direct fired Thermal/Catalytic Oxidizer with a Competitor Plus positive displacement vacuum pump and Lincoln Electric 10 horsepower, motor was used to extract hydrocarbon vapors.from the soil via the network of six (6) extraction wells (VE-6 through VE-9, MW-11R, and MW-1.2). In addition, an Ingersol Rand 10-hp air compressor was used to inject air into the aquifer through a series of five (5) offSite air sparge wells (AS-4 through AS-8). E2C Remediation . ~' Project Number 1801BK03 Janua~_ 30. 2004 3.3.1.. Evaluation of Off$ite Remediation Efficiency The offsite' remedial system Commenced operations on February 28, 2003. By March 6, 2003, it. was readily apparent that continued operation of the thermal machine would be economically I . unviable as the ratio of supplemental propane fuel plus electricity. (for the machine) to the mass removed was extremely diSproportionate with only a.~maximum of 36.5 pounds of hydrocarbons removed for the one-week period. As such, the machine was shut down and the machine was I demobilized. An electrical oxidizer ECAT 300 was mobilized to the Site on APdl 9, 2003 to -'evaluate its potential effectiveness. After a short period of operation (less thah one day) it was found that the influent'concentration was' Iow (<85 ppmv) and that, as with the thermal unit, the I ratio of electrical cost per mass removed would also be extremely.disproportionate. The ECAT and the air compressor were shut down,and demobilized from the Site. I 3.4 Conclusions Regarding Remedial Operations at the Site Based on the remedial operations at both the on-site and off-site areas, the following conclusions can be made:, '! = The contamination in the subsurface at the Site appears to be primarily a groundwater problem; ~ I . Influent concentrations'for' the onsite system have declined to a state such that use of the ECAT machine is not economically viable due to the high cost of electricity usage per unit of hydrocarbon mass removed; I = Use of either a thermal or electrical machine in the offsite area is also economically · unviable for the same reason that the onsite machine use is economically unviable; and = Alternative remedial systems will be required for the on- and off-site remedial operations. In Order to convert the onsite system to a granular activated carbon (GAC) system an SJVAPCD' ': Permit Amendment is required. As such, E2C prepared and submitted an Amendment Request I to the sJvApcD Permit'To Operate (PTO) for conversion to .a GAC system.. Based on conversations with the SJVAPCD a change to the existing PTO would require notification of all students at the school located approximately 1,000 feet north of the Site (machine location). IThis.would entail a'lengthy public notification process including public hearings. As such;.it would most likely be several months before a GAC sYstem could be started'and the actual benefit of the GAC system would be limited. I Based on the above conclusions, E2C makes the following recommendation: = Run the onsite groundwater air Sparging System (GASS) to oxygenate groundwater and I enhance natural degradation of fuel hydrocarbon compounds. 3.5.2 Offsite Remediation System I Based upon operational data from VES operations in the off-site portion of the plume, E2C · recommends the following: · Continued free-product/groundwater pumping on an appreximate bi-weekly basis; and I = Use the existing air sparge manifold to connect oxygen cylinders allow to Iow flow oxygenation of the groundwater to enhance microbial degradation of the heavy-end gasOline-range hydrocarbons dissolved in the groundwater. - 10 I " E~C Remediation Project Number 1801BK03 Janua~_ 30. 2004 4.0 ' 'CONCLUSIONS Based on the data presented in this report, E2C ma,,kes the following conclusions: =Overall groundwater elevations increased approximately 0.15 .foot since the Th'ird' Quarter 2003; - Groundwater flow at the Site is generally southeast in the onsite area and bends to the south-southeast in the offsite area. The onsite flow direction is predominately controlled from the whereas the flow direction in the offsite area reverts to the by recharging canal, regional flaw direction (i.e., the further from the canal, the more predominate the regional groundwater pattern); . The groundwater gradient in the area between MW-2 (onsite and upgradient Well) and MW-11R (offsite and downgradient).is significantly, flatter (0.025 feet/feet), than the gradient calculated downgradient of MW-11R (MW-l-1 R to MW~'15S) (0.15 feet/feet); · The center of groundwater plume is located in the area of MW-11R with extensive migration to the north in the area of MW-8 and. MW-1 (upgradient) and to the south- southeast to MW-16 (downgradient); In general, fuel hydrocarbon concentrations have decreased on-'and off-site, which is the result of the remedial operations (vapor extraction and groundwater air sparging). Additionally, the air sparging has enhanced the natural attenuation processes through the addition of oxygen to the aqUifer.water (this supplies additiOnal ion receptors, thus allowing enhanced microbial degradation of the fuel hydrocarbon compounds); . Influent concentrations to the onsite remediation system declined rapidly after start up indicating a "groundwater-only" contaminant plume. Cycling of the system on a three week off and one week on basis resulted in a significant increase in system influent concentration and hydrocarbon removal rate from the Third to Fourth Quarters 2002; however, influent concentrations declined in the First Quarter 2003; . For a one-year period (April 2002 to April 2003), the onsite remediation system, removed approximately 2,042 pounds of hydrocarbons subsurface; from the = Based on a ratio of electricity costs per unit mass of hydrocarbons remOved, the operations of the VES machine for the onsite and offsite remediation were economically unviable and the machines were shut down; howeVer, onsite groundwater air Sparging operations continued; and · For the off-site portion of the plume, E2C has been conducting free-product/groundwater pumping. 'As of January 14, 2004, approximately 37,000 gallons had been removed from the off-site portion of the plUme. -, 5.0 RECOMMENDATiONS Based on the data presented abOve and the conclusions from this data, E2C makes .the. following recommendationS: · Continue to conduct groundwater monitoring at the Site on a quarterly basis; ,Analyze groundwater samples for BTEX and five fuel oxygenates using EPA Method 8260B and TPHg using EPA Method 8015M; ·Continue use of the onsite GASS to oxygenate groundwater and enhanCe natural d,egradation of the fuel hydrocarbon compounds; EaC Remediation . , 11' I Prqiect Number 1~01BK03 . January 30, 2004 Continue free-product/groundwater pumping in the off-site portion of the plume (MW-7, MW-11R, MW-12 and MW-13) and at on-site wells (MW-1 and MW-8) on a bi-monthly basis; Begin utilizing oxygen cylinders provide oxygen sparge via to the off-site air manifold; and Perform operations and maintenance visits for the site-wide remedial system on a weekly basis. This will include carbon canister replenishment .in the offsite area as necessary and oxygen replenishment in the onsite area as needed. 6.0 LIMITATIONS AND REPORT CERTIFICATION E2C has prepared this'Report in accordance with generally accepted standards of care existing in California at this time. It should be recognized that definition ~,nd evaluation of geologic conditions is a difficult and inexact science. Judgments leading to conclusions and recommendations are generally made with limited knowledge of surface conditions present. No warranty expressed or implied is made. This report has been prepared under the professional supervision of the registered professional whose seal and signature herein. The concluSions of this report are based solely on the appear Scope of Services outlined and the-sources of information referenced in this report. Any additional information that becomes available concerning the Site should be submitted to E2C so that our conclusions may be reviewed and modified, if necessary. This report wa,s prepared for the sole use of Mr. & Mrs. Ki Chu Yi and/or agent(s) and the RWQCB. Prepared By: · Review/ed By: '~ ~ Go~lwin, R.G. #4779 Yun Zhang ~ncipal Hydrogeologist Staff Engineer/Geologist Reg. Exp. 11/30/04 EeC Remediation ' 12 Project Number ;i S01BK03 J~lnuary 30. 20'04 FIGURES Figure 1 Site Location Map Figure 2 Site Plan Figure 3 Fourth Quarter 2003 Groundwater Gradient Plot " Figure 4 Fourth Quarter 2003 Groundwater Benzene lsoconcentration Plot Figure 5 Fourth Quarter 2003 Groundwater TPHg Isoconcentration Plot '~! I E2C Remediation Figures CALIFORNIA I BRUNDAGE BRUNOAGE OAKERSFIELD EAST ',, [ ~ / - WHITE WHITE' LAN[ E?C Remediatio~t MR. FAST SERVICE STATION FIGURE - '600 BRUNDAGE LANE Bakersfield, California 93313 Telephone: ~66])831-6906 SITE LOCATION MAP Facsimile: ~661)831-6:3~ ,. LEGEND ' Well · . -'~ Shaltow Monitoring Location ......... ......... ~ Deep Monitoring Well Location : I ' . ' ~) ,Abandoned Well Location APN: 011-031-05 ' ' ~' Vapor Extraction Well Location ' "T" Street , , [] Air Sparge Well Location : I.ULUI"' ,IBM Benchmark VE-2 V Cu,re,~t G,s Pu?ps VE-1 ~' AS-1 ~'~ . MW-6 MW-3MW-1 MW-5 Brundage Lane ~ ~ ~ MW-SvE 3 ~ i .. BRUNDAGE ~NE. MW-9 AS-4 MW-10 ~ MW-7 AS-5 ~ em AS-7 S MW'12 [ MW-11 ,MW-13 AS-8 ~1 MW-lSD mi FIG STREET MW-15S ~++ ~w'16 ~ +MW-17D MW-17S I 40~ I FREEWAY RIGHT-OF-WAY SCALE: I inch = 80 feet E2C Remedi~tion ' MR. FAST SERVICE STATION · 600 BRUNDAGE LANE· FIGURE 5300 Woodmere Dr., Suite 105 BAKERSFIELD, CA. Bakersfield, California 93313 Telephone: (661) 831-6906 ,~ Facsimile: (S~) ~3~-6234 . SITE PLAN MW-3 MW-4 BM E~evatio~, . ~ ~ MW-9 348.00 - 322.94 LEGEND ~ Monitoring Well Location ~q ~ 330.00 ~ Shallow Monitoring Well Location ¢ ~ ,o~.o.m-oe ~ Deep Monitoring Well Location ., ...................... ~ ' ~w-~. ~w-~ ~w-~s ~w-~ BM Benchmark ~ ~ not honored J . Inot.honoredI ~ Groundwater Elevation Contour ~ F F~¢' ~ A v R I~ HT- O ~ Groundwater Elevation (~MSL) E2C ~e~e~i~t~o~ MR. FAST SERVICE STATION FIGU RE 600 Brundage Lane. 5300 Woodmere Dr., Suite 105 Bake'rsfield, California ~ ... Bakersfield, California 93313 ..... ' ' Telephone: (661) 83~-6906 FOURTH QUARTER 2003 . -Facsimile: (661)83176234 '~ GROUNDWATER GRADIENT pLOT 0 . 80 40 i ~,c,,j -'L:,5 i SCALE: 1 inch = 80 feet / , ! .011-031 r~ .' j- ~ ~ ~ ~..~ . VE-2 L~ .......... ~ Srundaoe ! ane MW-3 ' ~' MW-5 ~ ' BRUNDAGE LANE ~ ~ ~ 011-0,18-03 ~ ~ 011-048-14 ~ ,011-048-06 ., MW-12 MW-11R ~M~ }~ LEGEND ~ ~ + Monitoring Well Location · ~ {i + Shallow Monitoring Well Location . ~ ' ' + Deep Monitoring Well Location I ' I ' ~ ~, Abandoned Well Location ' ~...~ ............................ ~.~.j .... j~ ' iND.' '¢' Vapor Extraction Well Location ' "' I"'~"1 --I"~-I----MW'15D [~.~, '1'~ B~/I Bench Mark ~'~ GW Benzene Concentraton in uglL FF~,EEvVAY FdGHT-OF-WA'Y N~.) GW Benzene Isoconcentration .l Contour Line in ug/L E2C Remediation MR. FAST SERVICE STATION FIGURE 600 Brundage Lane 5300 Woodmere Dr., Suite 105 Bakersfield, California Bakersfield, California 93313. 4 - Telephone: (661) 831-6906 FOURTH QUARTER 2003 GROUNDWATER Fa.csimile: (661) 831-6234 BENZENE ISOCONCENTRATION PLOT O. 80 I ~ SCALE: 1 inch = 80 feet MW-5 MW-14 Monitoring Well Location Shsilow Monitoring Well Location Deep Monitoring Well Location MW-17S MW-lTD Abandoned Well Location TPHg Concentration in ug/L GW TPHg Isoconcentration O~ Contour Line in ug/L E2C ]{en ddiation MR. FAST SERVICE STATION U RE 600 Brundage Lane 5300 Woodmere Dr., Suite 105 Bakersfield, California Bakersfield, California 93313 5 Telephone: (661)831-6906 FOURTH ·QUARTER 2003 GROUNDWATER ..Facsimile: (661) 83·1-6234 TPHg ISOCONOENTRATION-PLOT Project Number 1801BKO3 Ja¢u¢~_ 30. 2004 m m m TABLES I Table 1 Summary of Fourth Quarter 2003 Groundwater Monitoring Data Table 2'Summary of Historical Groundwater Elevation Data m, Table 3 Summary of Historical Groundwater Analytical Data Table 4 Summary of VES Monitoring Data I Table5 Summary of Onsite Hydrocarbon Mass RemOved using VE/GASS (based on influent concentrations) Table6 Summary of Onsite HYdrocarbon Mass Removed using VE/GASS (based on %LEL) Table7 Summary of Offsite Hydrocarbon Mass Removed using m VE/GASS (based on influent concentrations) Table 8 Summary of Free-Product/Groundwater Pumping I m m m m ~ m E2C Remediation ", Tables ' ",i'~ Project Number 1801BK03 · January 30, 2004 TABLE 1 :. SUMMARY OF FOURTH QUARTER 2003 GROUNDWATER MONITORING ·DATA Mr.' Fast Service Station 600 Brundage Lane, Bakersfield, California November 11, 2003 DEPTH TO F-P TOC GW B T E × ' TPHg WELL ID DATE .WATER ELEV. ELEV. . ............................................................................................................................................................................................................... (feet BTOC) (feet) (feet MSL) (feet MSL) /]g/L MW-11 ' Well taken Out of Service - Replaced by MW-11 R Well Converted to VE well - Replaced by MW-11 R MW-13 11/11/03 47.58 392.00 , 344.42 nd<0.5 12 37 65 4,206 nd<2.5 nd<0.5 , nd<0.5 nd<0.5 ! nd<0.5 dup ' 11/11/03 ' nd<0.5 11 30 61 4,234 . nd<2.5 nd<0.~ nd<05 nd<05 ' nd<0.5 MW-i 5D 11/11/03 dry 390.72 'NSWD MW-17D 11/11/03 dry 390.91 . NSWD Notes:. " '-. Duplicate of MW-13 labeled as MW-20 on Chain-of-Custody . ' :lesults in micrograms per liter (,ug/L) = parts per billion (ppb) ' · ' MtBE = Methyl tertiary-Butyl Ether B = Benzene NA = Not analyzed '.. BTOC = Below Top of Casing nd = Below Practical Quantitation Limits: BTEX-0.5 pglL, TPHg;50 pg/L, and MtBE/DIPE/ETBE/TAME-0.5 Pg/L; TBA-2.5.,ug/L DIPE = Diisopropyl Ether NSWD = Not Sampled; well dry E = Ethylbenzene NSFP = Not Sampled, free-product present ETBE = Ethyl Tertiary Butyl Ether ' T = Toluene - · :-P ='Free-Product Thickness TAME = Tertiary AmYl Methyl Ether GW ='Groundwater TBA = Tertiary Butyl Alcohol iGW Elevation corrected for Free Product using formula: GW Elev = Reference Elev -[Depth to Water - (Product Thickness)(0.8)] E2 C Remedia~ion . Table. i- 1 I Project ,, January Number 1801BK03 30, 2004 TABLE 2 " ~ SUIViiVlARY OF HISTORICAL GROUNDWATER ELEVATION DATA I Mr. Fast Service Station 600 Brundage Lane,'Bakersfieid, California I - TOTAL ' DEPTH TO GW ELEV. ELEVATION WELL ID DATE TOC ELEV, DEPTH GROUNDWATER CHANGE (feet MSL) (feet BTOC) '(feet BTOC) (feet MSL) (feet) I _. 7/;~.~/95 4/5/96 NM? · 3/27/97 NM? 10/20/98 NM? ..... !(1_!/99 .... 'N/S ........................ ~.M__~ ................... 5/12/99 45.13 8/20/99 40.96 ...... 1_.~)? .... ' 40.96 -. · 3/30/00 46.35 7/3/00 NM? I 1/3/01 · 51.73 43.28 350.75 IVlW-1 6/4/01 ' . '"' 5i180 ' 42115 ......... ~5i.88 i'1i3' 8/6/01 51.80 40.32 353.71 1.83 .... ?-/_6/0!._. 51,80 42.32 351.71 -2.00 2/18/02 52.12 45.80 348.23 -3.48 _ 5/16/02 ....... 5_2._.1__0_. ....................... ~_1_._5_? ........................ _3_5_2_: 5~3 I 8/21/02 394.03 52.11 40.18 353.85 1.32 12/5/02 49.98 43.18 350.85 -3.00 2/24/03 49.99 44.10 349.93 -0.92 .t ' --. · - 6~!..-0-~.-0--3- ....... -5-2:-07 ~:~ 35-!:-59 ...................... !:66 "! 8/5/03 52.00 41.18 352.85 1.26 11/11/03 52.05 41.88 352.15 -0.70 4/~_/96_: .................... NM? ............ ....... ~/_2~/97 ............... ~.M_?- 10/20/98 44.36 ...... 1/!1/99 _ 44.28 5/12/99 42.76 ENK i ...... 8/~0/99 38,61 ...10~6~99 ..... N/A 12~7~99 41,47, 3~30/00 45,19 1/3/01 · 54,29 43,38 351,63 MW-2 6/4/01 54,29 41,82 " 353,19 1,56 8/6/01 .. 54,29 40,12 354.89 1.70 2/18/02 54,24 45,49 349,52 -3,07 8/21/02 395,01 54,10 40,86 354,15 0,16 12/5~02 54,10 43,09 351,92" -2,23 I 2/24/03 54.02 43.90 351.11 -0.81 6/10/03 54.03 42.16 352.85 1.74 E2C Remediation .... ' ' , ' Table 2-1 I Project Number 1801BK03 Janua/-y 30, 2004 TABLE 2 I ' SUMMARY OF H~STORICAL GROUNDWATER ELEVATION DATA , ,. ·Mr. Fast Service Station 600 Brundage Lane, Bakersfield, California' I ELEVATION TOTAL DEPTH TO GW ELEV; - WELL ID DATE TOc ELEV. DEPTH GROUNDWATER CHANGE :! .. .(feet MSL)' (feet BTOC) (feet BTOC) (feet MSL) (feet) m 3/27/97 NM? i !_/!!_/99 45.43 ' " 44.21 .... 5/.71_2_/,9_9 .... ENK 8/20/99 39.92 .... , I ..... 1_0./.6/_9 @ ............... !~/~_ ; ., ", ' 12/7/99 42.45 7/3/00 43.05 I 1/3/01 · 54.80 44.21 350.43 IVIW-3 6/4/01 54.84 42.82 351,82 1.39 8/6/01 54.84 41.16 353;48 ' i .66 _ _.71_2_/6_/_0_1__ ...... 54'.89 43,30 351.34 -2.14 2/18/02 54.82 46,32· 348.32 -3.02 5/16/02 54.80 41.54 353.10 4,78 8/21/02 . 394.64 54.84 40.66 353.98 '0.88 -'-i 2)~5/~ .... 54.82 43.46 351.18 -2.80 2~24~03 54.80 44.62 350. 02 - 1. ! 6 · I 6/10/03 54.80 42:Z8 35!'86 !'84 ...... , 8/5/03' 54.85 41.67 352.97 1.11 I . 4/5/96 ................ N¢_.A_ ................ 3~27~97 ,' N/A 5/12/99 45.13 ................ENK .................................. !_016!9.9 N/A 12/7/99 42.65 ,, , 7/3/00 43.10 ,, ........ 1_~.,_3~? 1_ , 54.29 43.80 350.34 I 8/6/01 54.12 41.22 ' 352.92 1.86 12/6/0i 54.14 42.80, 351.34 . -1.58 2/18/02 54.14 45.98 348.16 -3.18 5/71·6/02 54.15 .42.54 · 351.60 3.44 8/21/02 394.14 54.10 40.82 353.32 1.72 12/5/02 54.08' 43.70 350.44 -2.88 i, I " · ..2/_2~/03 ...... 5~'~).2_ 44'_78 349.~.~ -1.08 !; .6/_71.¢,/..0,_3. .......... 5.3.9! 44_.,3__~ ......... F 349.79 0.:~3 8/5/03 54.20 41..92, . 352.22 2.43 I' 11/11/03 54.31 42.34 351.80 -0.42 E2C Remediat. ion Table 2:2' I 1801BK03 January 30, 2004 Project Number TABLE 2 SUMMARY OF. HISTORICAL GROUNDWATER ELEVATION DATA Mr. Fast Service Station ' 600 Brundage Lane, Bakersfield, California I ELEVATION TOTAL DEPTH TO GW ELEV.~ WELL ID DATE TOC ELEV. ' DEPTH GROUNDWATER CHANGE I (feet MSL) (feet BTOC) (feet BTOC) .(feet'MSL) , (feet) !0J_27./98~ 49.75 I .... .5-(]~9 ENK · 8_/_20_/9.~) .... . 42.77 ].2/7_/99 43'9? : .' 7/3/0O 43.89 I 5/16/02 57.44 42.92 350.51 3.56 8/21/02 393.43 57.38 41.59 35t .84 1.33 I 2/24/03 57.30 45.32 348.11 -1.30 8/5/03 57.29· 42.61 350.82 6.21 I 19L2._o/As_ ............ 4.5:7.0 .... . 44.10 3~30/00 46.61 I 7~3~00 41.58 ' 1/3/01 53.20 43.07 350.69 674/01 53.06 41.30 352.46 1.77 . i MW-6 8/6/01 53:!6 · 2~18)0~) 53.10 45.18 348.58 -3.04 5/16/02 53.10 41.23 352.53 3.95 8/21/02 393.76 53.10 39.30 354.46 1.93 ' :12/5~0-2 53.00 42.05 351.71 -2.75 8/5/03 52.91 40.23 353.53 1.03 E2C Remediation . Table 2-3 .. Project Number 1801BK03 . January 30, 2004 TABLE 2 SUIVi[VIARY OF HISTORICAL GROUNDWATER ELEVATION DATA Mr, Fast Service Station 600 Brundage Lane, Bakersfield, California ELEVATION TOTAL DEPTH TO GW ELEV. WELL ID DATE TOC ELEV. DEPTH GROUNDWATER CHANGE (feet E1SL) (feet BTOC) (feet BTOC) (feet MSL) (feet) 10/20/98 . 49.34 5/12/99 42.51 .......... ENK 12/7/99 45.13 7/3/00 N/A 1/3/01 52.8045.08 348.55 ..... §/_4_~ ....... 53.72 44.52 · 349.11 " 0.56 IVIW-7 53.72 42.78 ' 350.85 1.74 12/7/01 53.72 44.32 349.31 -1.54. 8/21/02 393.63 53.71 42.20 351.43 1.1 '1 _2(24~/0~ 8/5/03 _ ......... ~.3:~1 43:.2_0 ............. 350.43 0.85 . 7/3/00 ENK 43.42 52.80 1/3/0t. 43.90 350.05 ' 50.90 . 5/16/02 50.90 42.62 351.33 3.60 MW-8 ---i-~)~'02 ' 50.87 43.95 350.00 -2.89 8/5/03 50.61 42.99 350.96 -0.38 ! ,i'l E2CRemediati°n Table2-4 !ii~ Project Number 1801BK03 JanuarY 2004 30, TABLE 2 ~ SUMMARY OF HiSTORiCAL GROUNDWATER ELEVATION DATA . Mr. Fast Service Station . 600 Brundage Lane, Bakersfield, California TOTAL DEPTH TO ELEVATION WELL ID DATE .. TOC ELEV~ DEPTH GROUNDWATER GW ELEv. · CHANGE · (feet MSL) (feet BTOC) (feet BTOC) (feet MSL) (feet) · 7/3/00 ENK ' 44.02 :1/_3~0 ! ........ 51.60 45.14 348.9i , ..... ¢?t_/..0_!' . - ...... ~.-~0 ................. 4'~3'152 :35'0153 ...... :'. '.' '. !.62 ' ' 8/6/01 ...... 501'~2 42.21 351.84 1.31 12/6/01 50.72 44.24 349.81 -2.03 ....... .2._/18/_.0_2' 50.68 46.94 ' 347.11 -2.70 MW-9 5/16/02 ........ 50.6~ 4!.:92 ................... ~.5_~:_"1.3 5'02 §/2ij~2' ' 394;05 50.69 41.61 '352.44 0.31 1 2/5/02 50.63 44.50. 349.55 ·-2.89 2/24/03 50.48 45.54 ' 3.48;5i :, -1 .'0,4' I 6/10~03 , 50.60 43.4:'i I' 350.64 .... 2.13 · 8/5/03 .......... t50:5~ 42.64 .......... 35! '4_! (~'7~ 11/11/03 ........... 5_6_.58. ..................... 4_3'.._0_~_ ..................... ~5.!,.:0_2.._.: -'0-'.3- ~ ............... 7/3~00 EN K 45.51 1/3/01 52.50 45.28 347.63. I 6/4/01 52.34 45.34 347.57 -0.06 8/8/01 52.34 43.36 349.55 1.98 12/6/01 52.34 44.14 ' 348.77 -0.78 I _2/18J_0..2 52.32 47.12 345.79 IViW-10 5/16/02 52.20 44.94 347.97 2.18 8/21/02 392.91 52.00 42.53 350.38 2.41 I 12/5/02 52.00 44.88 ' 348.03 -2.35 2/24/03 51.88 46.30 346.61 , ' -1.42 6/10/03 51.91 44.90 348.01 1.40 I 8/5/03 51.97 " 43.88 349.03 1.02 ...... !~!/! !/~_.3 ..... 52.00 43.74 349.17 0.14 WELL SILTED UP, CONVERTED INTO VAPOR EXTRACTION WELL I 6/4/01 ....... 63:.52 5_4:.~.6_ ........... 336.46' ' --' 8'i'6)0-i .... 391.22 63.52 47.65 ' 343.57 ' 7.11 · 12/7/01 63.52 : 45.08 346.14. 2.57 _2~!.8(0_2~ 63.40 54.63· · 336.70 -9.55 5/22/02 I- -"- 63.40 48.68 342.65 5.95 8~i-)(~2 63.39 43.02 . 348,31 5.66 MW-11R ' i-~)~)~2 -- _ .... _6._6:3,4_ ,4_..6.82 ~4__4-:_5!- ;~:_.8__0. ............ -'2'/2,4/03 391.33 66.32 ' 52.84 338.49 . · -6.02 · 6/10/03 ....... 6~_.._2~ .................... .4_6_.:~0. .................... 3_4_5:~.~ 6.:6~ 8/5/03 63.15 44.39 346.94 1.81 .... !__:1_ ./1~1_/_0_.3_ ........ 6_3_:2_~ ............... ~.3:_8_~ .................... 3_47-..4_9 0.55 E2C Remediation . Table 2-5 Pro ect Number 1801BK03 . ' ' January 30, 2004 TABLE 2 SUMIVIARY OF HISTORICAL GROUNDWATER ELEVATION DATA Mr. Fast Service Station .~ 600 BrUndage Lane, Bakersfield, California · . TOTAL DEPTH TO , ELEVATION WELL ID DATE TOC ELEV. DEPTH GROUNDWATER GW ELEV. CHANGE (feetMSL) (feet BTOC) (feet BTOC) (feet MSL) (feet)- 6/4/01 NMFP NMFP NMFP 8/6/01 392.01 NMFP NMFP 'NMFP 12/7/01 44.78 347.23 ' 2/19/02 .51.65 340.41 -6.87 8/21/02 64.89 42.74 349.32 . . 0.97 IVIW-12 12/5/02 64.88 45.02 347.04 ' -2.28 2/24/03 392.06. 64.87 '- 46.48 '345.58 -1.46 6/10/03 64.18 44.60 347.46 1.88 6/4/01 65.40 58.10 334.55 2/19/02 65.38 57.43 334.57 -7.91 8/21/02 65.38 47.65 .344.35 11.05 2/24/03 392.00 65.40 56.40 335.60 -7.70 6/10/03 NMFP -- NMFP NMFP 8/5/03 66.23 49.49 342.51 6.91 11/11/03 65.44 47.58 344.42 1.91 6/4/01 77.0069.88 321.99 8/6/01 391.87 ...................................... ~_8.,41 ....................... 3_~ 3_ ._4_6_ .........1.47 ...................... . 76.90 12/7/01 76.92 68;50 323.37 ' -0.09 2/18/02 76.98 69.30 322.35 -0.80 5/22/02 77.48 69.50 322.15 -0.20 12/5/02 78.96 68.33 323.32 0.37 2/~(~..3_ 391.65 78.94 69.72 321,93 -1.39 2/18/02 ....... .87_.24 dry ......................... .8/2!/.02 8.7:.!.8 ~ry 77vTE7 ............................ Mw-15D !2(5(0,2 390.72 ....... 87:!8 dry 7:;:7:77 ................. 87:24 . E2C Remediati~n Table Project· Number 1801BK03 January 30, 2004 · TABLE 2 · ' sUlvIMARY OF HISTORICAL GROUNDWATER ELEVATION DATA Mr. Fast Service Station '600 Brundage Lane, Bakersfield, CalifOrnia TOC ELEv. TOTAL DEPTH TO GW ELEV. ELEVATION WELL ID DATE DEPTH . GROUNDWATER CHANGE (feet MSL) (feet BTOC) (feet BTOC) (feet MSL) (feet) 1~/7__/_.0_1_ ....... -..:..-,.7~:2~ .................... ' ~0_'-.7.¢. 2/18/02 73.30 dry " - ....... 5/22/02 73.22 70.00 320.75 8/21/02 73.25 69.26 32i .49' 0.74 MW-15S 12/5/02 390.75 2/24/03 73,30 71.92 318.83 -2.21 6/10/03 73.30 69.79 320.96 2.13 .... 8/_5_/_0'3 ............. 7_3_'2_~_ .................... 65_:~.1_ ?_2.5.:0._4; 1__!/!.~0.3_ ............ .7_3:!.7 .6_3.82 ......... 326.93 1.89 I' !2/7~'0.~ ~9. 0 dry 1 2(!,8/02 ........ Z.9:?.2 d rY. -5/22/02 78.55 dry ........ 8/21/02 79.10 dry ........ I'vlW-16 _1.~/5~/0__2_ ..... 390.97 ........ ~9.~ ................... d_ry_ ............................ %.'_.'__'.'27; 2/24/03 '79.02 dry ........ · 6/10/03 79.10 dry ........ ..... _8_/_.5_/..0_ 3_. ....... _7_._9_._00 ...................... d_ry ............... 2_'_-7'_7_' 11/11/03 79.06 74.85 316.12 · ' 2/18/02 91.20 dry .5/22/02 91.00 dry ......... ..... 8/21/02 91.05 drY ---.7;77 ____.2._/~ _4.__/~ ..... 91.24 dry : ............. -__-....; -~ -_- -~- 6/10/03 91.28 dry ........ 8/5/03 .................. ; ................ _d~ ............ _'_ ...... '"_"Z': ...................... __1..~./_! !/03 ....... 9 !._.2_.! d_ry ................... : ............. 1 2/7/01 · 81.02 57.14 333.60 2/18/02 . . 79.78 61.50 329.24 -4,36 5/22/02 79.65 73.98 3i 6:76 -i2.4~ 8/21/02 79;65 57.93, . 33'2;8i :i6;65 Mw-17s 1!. 2/5~(:~-2.....-:- 390.74 79.65 57.82 332.92 0.11 6/10/03 79.70 60.48 330.26 0.02 _!_1_/!.!_/?~ .... 79.59 57.88 332.86 1.71 ~1 E2C Remediation ' Table 2-7 . .,·' ' 180.~. BK03 January 30, 2004 Project Number TABLE 2 SU[vIMARY OF HISTORICAL GROUNDWATER ELEVATION DATA Mr, Fast Service Station 600 Brundage Lane, Bakersfield, California ELEVATION TOTAL DEPTH TO GW ELEV. WELL ID DATE TOC ELEV. DEPTH GROUNDWATER CHANGE (feet MSL) (feet BTOC) '(feet BTOC) '(feet MSL) (feet) :1 8/2 ?02 ...... !..1_~_.~ .................... ?._/_5.!02 118.75 114.40 -0.16 2/24/03 NM 115.09 0.69 iVIW-18 6/10/03 118.80 115.20 0.11 11/11/03 ..... 1! 8:~2. '~.!..~.53 :. Notes: --lev. = Elevation Onsite 4th/03 avg. gw elev. Chg. -0.50 ENK = Elevation not known prior to January 2001 Offsite 4th/03 avg. gw elev. Chg.. 0.47 GW Groundwater Overall 4th/03 avg. gw elev. Chg. 0.15 NMFP = Not measured, greater than 30" of free-product N/S = Not surveyed (?) Top of Casing Elevations are measured at the north side of casing and referenced to mean sea level Groundwater Elevations- are not corrected for product thickness before 0'1/03/01 Groundwater elevations after 01/03/01 are based on Benchmark on canal abutment i E~C Remediation Table 2-8 Project Number 1801BK03 January 30,· 2004 --' TABLE 3 · SUIVIMARY OF HISTORICAL GROUNDWATER ANALYTICAL DATA MR. FAST SERVICE STATION 600 Brundage Lane' Bakersfield, California / B I T I E t X TPHg I TPHd I TBA ! MtBE DIPE I ETBE I TAME WELL ID DATE [ ..................................................................................... ~' .................................. : ........ (~'~j)'l~i ..................................................................................... ' .............................................. 7/20/95 4 200 113,000 ND 40,000 329 000 NA NA NA NA NA ' NA 4/5/96 NA NA NA NA NA NA NA NA NA NA NA 10/20/98 NSFP NSFP NSFP NSFP NSFP NA NA NA NA NA NA 1/11/99 NSFP NSFP NSFP ' NSFP NSFP NA NA NA NA NA NA -- 5~1'2799 ..... N-S-I~-i5 ....... ~-P ..... ~15 ...... ~- ..... ~§~ ........... i~l-~, ................ NA- ....... N~A- ............... ~'~ ......... [q'~ .......... ~- - ~26)-9-~-: ......... ~-S-I~'P I~1~ 1~-- ....... NSFP NSFP .... ~I-S F~ ............ ....... ~' 2~¢~-~-9 ..... : ~-0-(~ ......... .3~400 62,400 454,000 ..... -3/3--8-/~"8 ............... ~-~'F-I5 ........ ~I'~F~ .... NSFP ..... ~-[~=~ ......... .... -~§~6~ ................ 8~'~- .............. 8.~ ....... ~00 24,000 1 §I~,-D'0~ ..... N~A-- NA NA NA NA NA 1/3/01 nd<20 460 680 19,700 1 1/3/01 (Dup) nd<20 710 1,400 18.3 17,930 NA nd<200 nd<20 nd<20 nd<20 nd<20 · MW-1 .... -31~1-0i .... I~sFI5 ............. I~1~=~- ........ ~§[Ep--- - -~1~=-~ ...... -Ns--F~ ~ I~S-~F ......... N-~-F-i5 ......... N~IEi5- ....... i~-~'lEF ...... N~F-I5 .... -N~-IEi5' ........ 8/6/_~0_1_ ......... n~d<__5._o.o ...... _5_ 8~5_ ...... _8_3_0 ......... 7,760 33,500 NA nd<250.O nd<50.0 nd<50.0 nd<50.0 nd<50.0 12/6/01 nd<0.5 nd<0.5 230 5,280 .......... ~-0 ..... ~-A~ ............ '~-~: ~- ..... -n~'~ ...... ~5:~ ~1~5~-- --' ~)~ 2/18/02 NSFP NSFP NSFP NSFP NSFP NSFP NSFP NSFP NSFP NSFP NSFP .... 2~5-~'~-~)-~-'--: .... ~i8~-0~5 ........ §~'~5- ............ ~76 183 28,600 .... N~ .......... ~0-d ......... .'n~- - n-~l<-o'.'5 nB~0'i5- ....... n'ci~;'~ -- 8/2~-0~ .......... ~1-~.~5-'7 ~-06 -: ...... 55- .... ~8~ .... 12/5/02 nd<0.5 19 1,180 1,140 10,630 NA nd<2.5 nd<0.5 nd<0.5 nd<0.5 nd<0.5 ...... ~/0~ ............ n-d~'o'.5 nci~o.5 ............ -5- ........... -7~ ............. ~4,-5-6-~ ......... N--A ............. 46- ............. ~ci~-6:~ ..... n-ci~oi~ ......... -r~'~i~51'~5- ....... -n-d~-.~ 11/11/03 nd<0.5 nd<0.5 140 130 2,670 NA 6 nd<0.5 nd<0.5 nd<0.5 nd<0.5 E2C Remediation Table 3~ 1 Project Number 1801BK03 January 30, 2004 T~BLE 3 SUMMARY OF HISTORICAL GROUNDWATER ANALYTICAL DATA MR. FAST SERVICE STATION 600 Brundage Lane · Bakersfield, California '[ ......................... 1 .................. : ...... 1 ..................................... : ...... : ............................................................................................................................................. · I B '- T E I X' TPHg TPHdI TBA / MtBE DIPE I' ETBE I TAME' WELL ID DATE ~ . (/.tg/L) 4/5/96 <0.3 <.3 <0.3 - <.03 <50.0 NA NA NA NA NA NA 3/27/97 1.0 6.2 0.83 4.5 44 NA NA NA NA NA NA 10/20/98 <0.5 <0.5 <0.5 <0.5 <50 NA NA <0.5 NA NA NA 1/11/99 <0.5 <0.5 <0.5 ' <0.5 <50 NA NA <0.5 NA NA NA 5/12/99 <0.3 5:5 <0.3 1.52 ' <500 NA NA <2.0 NA NA NA ...... 8~o/9~ ........ ~'/5.-§ ....... ~-:~7:~- ......... ~613- ............ :~-0-.-6 .... -<-5-6~ ................ ~. ...... 12/7/99 <0.3 <0.3 <0.3 <0.6 <500 NA NA <2.0 NA NA NA - "~3/~/~30' ........ ~8~§ ..... ~'~)~"---'~-' -'~).~ ............... ~6.6 ......... '.~ ............... ~1~, ............. NA ............. <0.5 N-A ...... ~I'A"-: ..... N~ .... - - 7/3-/6'(~ ........ <0.~ .............. .~-0~ ..... ~--~3'i'~ ......... -<~.-~--7 ........ -.~5-~ ...... -N/~ .... ~N-.,~ ..... 7--~0'.~ .............. I~-.,~ ........... N-~ ........ I~,- ....... ..... :1/3~-C~'~ ..... n~.~-0;56 ........ -n~<0.50 --- n-d-<'0-; ~0 ..... ns~o.~)- ....... ~ ~'.~-5~- ...... NA- ....... nd<5 3/2/01 nd<0.50 nd<0.50 nd<0.50 nd<0.50 nd<50 NA nd<5 nd<0.50 nd<0.50 nd<0.50 ~3~'5~-- MW-2 6/4/01 nd<0.5 nd<0.5 nd<0.5 nd<0.5 -- ~ a~5-0- .... N-A ...... ~-n-d~2 .~ --:- .. '"""--2)~)~)~ ...... 4;~'- ............ -~.~- ..... nd<0.~ ......... :'-§1.-.3 ........... :1'"~-~ ........ 1'7,1~ ...... n~d-<2%5- ' ' '~):i-8-/-0-~ 1.6 :--~ ........... ~;(~-; ...... -3:~'{)- .......... 4~0 ............ ~1-~--- -- n~<2.5 ......... 8/21/02 1.2 5.2 1.7 5.0 - 390 NA nd<2.5 nd<0.5 nd<0.5 nd<0.5 nd<0.5 --1-2/570-;~ ...... nd<0.5 nd<0.5 1.3 ...... ~1~-~ ....... ~' ~2~- ': --:' "-I~.~,- ..... nd<'~.-~ ..... ~c~(~';~ ......... r~l'.~;~ n-d-<O;5 r{~i~3:'5- - 2/25/03 nd<0.5 nd<0.5 nd<0.5 nd<0.5 nd<50 NA nd<2.5 nd<0.5 nd<0.5 nd<0.5 nd<0.5 ........ ~-/~ 0/0-3 ....... n~0.5 - "-'"'-nd<-~.-~ .......... i~-6- ........... ~.-'7-~ ......... n~d<~8 -~ .... nd<2.5 nd<0.5 nd<0.5 nd<0.5 nd<0.5 " 8/5/03 nd<0.5 nd<0.5 nd<0.5 nd<0.5 nd<50 NA nd<2.5 nde0.5 nd<0.5 nd<0.5 nd<0:5 . E2C Remediation Table 3-2 · ·, Pc'oject Number 1801BK03 January 30, 2004 TABLE 3 SUMIVIARY OF HISTORICAL GROUNDWATER ANALYTICAL DATA MR, FAST SERVICE STATION · ' 600 Brundage Lane Bakersfield, California ' / B I T .... 1 E I X I TPHg I TPHU I 'T.A |"=t.E DinE I ETBEITAME WELL ID DATE / (pg/L) . . ......... .47'_5_/_~ _6_ ........ _..4! 4~2 ......... 3~5 .......... _3zO?O_._O~ _ _ 8,60~0 ..... N~, ......... ~_.A_ ........... __NA .................. N.A ........ _N_.A_ ......... NA 3/27/97 37 8.4 170 1,100 12,000 NA NA NA NA NA NA . 10/20/98 4.6 <0.5 1.90 53.0 1,300 NA NA 3.8 NA NA NA 5/12/99 8.36 <0.3 <0.3 421 14,300 NA NA 69.4 NA NA NA 10/6/99 <0.3 <0.3 <0.3 ~0.6 <500 NA NA 1.1 NA NA NA ........ ~'2]~9~ ........ ~-0.~ ..... ~'~'.~ ......... -~0.~ ............ ~ .3~ ............ -~-~ ............ N-~-"' ' ..... NX ................ <~-'.'0 ~ ] .......... ~ .......... N'~ ..... G]~ ....... :'~-~'0~ ~d~87~ ...... nd~<~.-5- .......... n d%~ .~ ..... 383 NA nd<2.5 . nd<0.5 nd<0.5 nd<0.5 nd<0.5 ~W-3 8/6/01 nd<0.5 nd<0.5 nd<0.5 nd<0.5 nd<50 NA nd<2.5 nd<0.5 , nd<0.5 nd<0.5 nd<0.5 dup nd<0.5 0.92 nd<0.5 nd<0.5 380 NA nd<2.5 nd<0.5 nd<0.5 nd<0.5 nd<0.5 12/5/02 nd<0.5 nd<0.5 . 2;1 2.7 70 NA nd<2.5 nde0.5 nd<0.5 nd<0.5 nd<0.5 ~24/03 nd<0.5 nd<0.5 nd<0.5 nd<0.5 nd<50 NA nd<2.5 nd<0:5 nd<0.5 nd<0.5 nd<0.5 8/5/03 nd<0.5 nd<0.5 nd<0.5 nd<0.5 164 NA nd<2.5 nd<0.5 nd<0.5 nd<0.5 nd<0.5 " ...... ~-~1~8-3 ......... ~d-~5.~ ......... n~<~:5 ........ ~d--~.5 ...... %-~0.~ ............ n'd<5~ .... '- NA .... nd<0.5 nd<0.5 nd<0.5 nd<0.5 --:'~-8'~-56 E2C Remediation Table 3-3 Project Number 18013K03 January 30, 2004 T/~BLE 3 SUiVliViARY OF HISTORICAL GROUNDWATER ANALYTICAL'DATA · :' MR, FAST SERVICE STATION 600 Brundage Lane Bakersfield, California I I ........... ..B. ........... I ........... ..T. ........... 1 ............ .E. .......... 1 ........... ..x. ........... ['.......T..P...H.g. ...... L....T...P..H...d......I ........ ..T...B...A.. ....... t ....... M.t...B.E .... I... DIPE I ETBE I TAME WELL ID DATE [ · · (pg/L)' . ................. : ................................................... 4/5/96 <0.3 <0.3 0.75 260 1,800 NA NA NA NA NA NA 3/27/97 2.00 20.0 1.10 9.8 340 NA NA NA NA NA NA 1/11/99 <0.5 <0.5 <0.5 <0.5 <50 NA NA .7.2 NA NA NA . 5/12/99 58.7 9.87 388' _._ 1~,0_4_0_ ....... !.~.,~_0_0. ...... NA NA 524.0 NA NA NA ...... 8/~/-~ ....... : ~-.3 ............. ~-~'~ <0.3 <0.6 <500 ' NA NA 3.47 NA NA NA: 10/6/99 <0.3 <0 3 <0 3 12/7/99 <0.3 <0.3 <0.3 . 1.11 <500 NA NA 5.15 NA NA · NA .3/30/00 <0.3 <0.3 <0.3 <0.6 <500 NA NA <0.5 NA NA NA 7/3/00 <0.5 <0.5 <0 5 <0.5 <50 NA NA <0.5 NA NA . NA 1/3/01 nd<0.50 nd<0.50 nd<0.50 nd<0.50 nd<50 NA nd<5 nd<0:50 nd<0.50 nd<0~50 nd<0.50 3/2/01 nd<0.50 nd<0.50 nd<0.50 nd<0.50 nd<50 NA ~ nd<5 nd<0.50 nd<0.50 nd<0.50 nd<0.50 MW-4 6/4/01 nd<0.5 nd<0.5 nd<0.5 nd<0.5 nd<50 NA nd<2.5 nd<0.5 nd<0.5 nd<0.5 nd<0.5 · 8/6/01 nd<0.5 nd<0.5 nd<0.5 nd<0.5 nd<50 N^ nd<2.5 nd<0.5 nO<0.5 nd<0.5 nd<0.5 12/6/01 6.44 295 80 295 2,210 NA nd<2.5 nd<0.5 nd<0.5 nd<0.5 nd<0.5 ...... ~-1-8-/-0~ ............. ~ .............. 8/21/02 1 4.3 1.1 4.4 250 NA nd<2.5 nd<0.5 nd<0.5 nd<0;5 nd<0.5 12/5/02 nd<0.5 nd<0.5 ' nd<0.5 0.6 110 NA nd<2.5 nd<0.5 nd<0.5 nd<0.5 nd<0.5 ..... -8/~5/~3 .... :'-h~515' E2C Remediation . Table 3-4 Project Number 1801BK03 January 30, 2004 TABLE 3 SUM[friARY OF HISTORICAL GROUNDWATER ANALYTICAL DATA - MR, FAST SERVICE STATION 600 Brundage Lane Bakersfield, California I ' B T I 'E I X ' T"'g I TPHd I TBA / ~E DIPE ETBE I TAME WELL ID DATE [ ......................... .................................................................................................................................................................................................................. : / ' (,ug/L) · . / 3/27/97 8.8 32 3.6 ~ 29 320 NA NA NA NA NA NA 1/11/99 <0.5 3.9 <0.5 1.50 <50 NA NA ' <0.5 NA NA . NA 5/12~99 <0.3 <0.3 <0.3 1.27 <500 NA NA 21.40 NA NA NA 12/7/99 <0.3 <0.3 <0.3 <0.6 <500 NA NA <1.0 NA NA NA ~"23/~-5 ....... ~5~5:50 nd<5%~5'--I ~575~ ..... ~;~ ...... nd<50 NA nd<5 nd<0.50 nd<0.50 nd<0.50 nd<0.50 3/2/01 nd<0.50 nd<0.50 nd<0.50 nd<0.50 nd<50 NA nd<5 nd<0.50 nd<0.50 nd<0.50 nd<0.50 8/~/~- ......... &-8-;b.~' nd<6.~ .... n~;0%~- .... ~5';d;~ .......... nd<50' NA . nd<2.5 nd<0.5 nd<0.5 nd<0.5 nd<0.5 12/6/01 12.41 480 105 375 2,510 NA nd<2.5 nd<0.5 nd<0.5 nd<0.5. I nd<0.5 I 5~/~ ......... ~5<5~5 nd<0.5 nd<0.5 20 .220 NA nd<2.5 · nd<0.5 nd<0.5 nd<0.5 nd<0.5 1 N5/02 nd<0.5 nd<0.5 1.5 nd <0.5 100 NA nd<2.5 nd<0.5 nd<0.5 nd<0.5 nd<0.5 2/25/03 nd<0.5 nd<0.5 nd<0.5 nd<0.5 nd<50 NA nd<2.5 nd<0.5 'nd<0.5 nd<0.5 nd<0.5 ' i~/~{/5~ ........ ~-8~5;~ nd<5:~- ......... n~-6:5- ....... n-d;5'.~ .......... -~;'50 ........ -~-A- 'nd<2.5 nd<0.5 nd<0.5 nd<0.5 nd<0.5 E2C Remediation Table 3-5 Project Number 1801BK03 January 30, 2004 TABLE 3 SUMMARY OF HISTORICAL GROUNDWATER ANALYTICAL DATA MR. FAST SERVICE STATION 600 Brundage Lane ~-Bakersfield, California WELL ID DATE r .................................................................................................................................... ~'1" .................................................................................................................................... 3/27/97 0.98 5.90 0.92 5.80 60,00 NA NA NA NA NA . NA 10/20/98 <0.5 <0.5 <0.5 <0.5 , <50 NA NA NA NA NA NA 1/11/99 <50.0 .5.30 <0.5 2.80 <50 NA NA~ ' <0.5 NA NA NA 3/30/00 <0.3 <0.3 <0.3 <0.6 <500 NA NA <0,5 NA NA NA 1/3/01 nd<0.50 nd<0.50 nd<0.50 nd<0.50 nd<50 NA nd<5 nd<0.50 nd<0.50 nd<0.50 nd<0.50 3/2/01 nd<0.50 nd<0.50 nd<0.50 nd<0.50 nd<50 NA nd<5 nd<0.50 nd<0.50 nd<0.50 nd<0.50 MW-6 2/18/02 nd<0.5 5.8 nd<0.5 25 150 NA nd<2.5 nd<0.5 nd<0.5 nd<0.5 nd<0.5 8/21/02 1.9 7.6 0.7 5.4 60 NA nd<2.5 nd<0.5 nd<0.5 nd<0.5 nd<0.5 2/24/03 nd<0.5 nd<0.5 nd<0.5 nd<0.5 912 NA nd<2.5 nd<0.5 nd<0.5 nd<0.5 nd<0.5 6/10/03 nd<0.5 nd<0.5 0.68 1.84 nd<50 NA nd<2.5 nd<0.5 nd<0.5 nd<0.5 nd<0.5 8/5/03 nd<0.5 nd<0.5 nd<0.5 nd<0.5 nd<50 NA nd<2.5 nd<0.5 nd'~6.,~ '- :' '~-8~8;~ ......... -r~'c~8;'~ .... 11/11/03 nd<0.5 nd<0.5 nd<0.5 nd<0.5 nd<50 NA nd<2.5 nd<0.5 nd<0.5 nd<0.5 nd<0.5 E2C Remediation Table 3-6 Project Number 1801BK03 January 30, 2004 ·" TABLE 3 suMMARY OF HISTORICAL GROUNDWATER ANALYTICAL DATA MR, FAST SERVICE STATION · 600 Brundage Lane Bakersfield, California I t ..B. T E X TPHg I TPHdI TBA , MtBE DIPE , ETBE ' TAME WELL ID DATE ........... ........... I ......... 1 ......................... 1 ......................... I ..................................................................................................................................... : ................................... . · ' . 6ug/L) " - 3/27/97 2,400 24,000 2,300 14,000 140,000 NA NA __ NA NA NA . 10/20/98 110 25;000 3,500 27,000 150,000 NA NA 150 NA . NA NA 1/11/99 220 31,000 4,200 31,000 120,000 NA NA 380 NA NA NA 5~ 2~99 ......... Ns--F~ 8~'0]~)~j ........ ~§~:F--7 .... NSlEP ...... -N~P 'N-~'~I5'' ...... ~-~FI5- ...... ~- I~-F-P- ....... : ............. 7-" . 12/7/99 NSFP NSFP NSFP NSFP NSFP NA NSFP _ ................................................................. 3/30/00 NSFP NSFP ' NSFP NSFP. NSFP NA NSFP · 7/3/00 NSFP NSFP NSFP NSFP NSFP NA NSFP 1/3/01 NSFP . NSFP NSFP NSFP NSFP NA NSFP NSFP NSFP NSFP · NSFP 3/2/01 <20 9,400 4,100 28,000 24,940 NA <200 <20 <20 <20 <20 6/4/01 <50.0 5,730 3,590 13,230 87,960 NA <250.0 <50.0 <50.0 <50.0 <50.0 MW-7 8/6/01 <50.0 1,780 '2,330 10,600 35,500 NA <250.0 <50.0 <50.0 <50.0 <50.0 ' 'i2)~6~ ......... 2/1-9-~52 ........ NSFP NSFP NSFP NSFP NSFP NSFP NSFP .NSFP NSFP NSFP NSFP .... 5)2~6~ ......... ~.-§ ........... 565 ; ...... A~b%g- .... 5;iE0 -§~':500 ...... 'h-A- ......... -n8<~5- .......... -~d-<-~':5- .......... ~d~0.5 nd~0:~ ........ ~-d-~b.-~-- d~__p. ......... n__cl___<o.~5___ ._44_0- ............ .n_d<0.~5 ......... 3_!..3Z0 ". _3_.5_,00~0 .... NA nd<2.5 , nd<0.5 nd<0.5 nd<0.5 nd<0.5 8/21/02 nd<0.5 810 810 ___ 5,6_5~ ._9_.4_,_0_0_0- .......... _N~A ........ nd_<2_._5 .......... n~d<_0. :.5_ .n.._d~_O_.5' nde0.;5 ..... ~_d.~0_.~ .... 12/5/02 nd<0.5 1,180 4,260 4,630 13,900 NA nd<2.5 nd<0.5 nd<0.5 nd<0.5 nd<0.5 6/10/03 nd<0.5 2.87 10.4 2,595 5,723 NA nd<2.5 nd<0.5 nd<0.5 nd<0.5 nd<0.5 ' ~/~)6~ ...... n-d-~-5:5- .............. 3' .......... ~ .............. ~'~t-g · ..... n'd<50 NA --' n~<-2:~5- ............ n~-(Jt-~- ..... nd<0.5 n~J~015 nd<0.5 ". 1i')i'~:J ........ -~<07.5 ........... 1~-~ .......... -7~- ....... '4'ib~0 ...... i'51-7-~(~- ........... ~-~ ........ ~i'~J'~Z§ .......... ~Ci~5~5- ........ ~i~0.5' ' n'd'~i'~ ....... nd<0.5- E2C Remediation Table 3-7 Project Number 1801BK03 January 30, 2.004 TABLE 3 SUMMARY OF HISTORICAL GROUNDWATER ANALYTICAL DATA · MR. FAST SERVICE STATION 600 Brundage Lane Bakersfield, California B T I E /' X 'j TPHg t TP.d I TBA / M,BE I D,P I I WELL ID DATE ' ~ ......................... I ............................ : ...................... , ........ r ............................................................................................................................................... ~g/L) ' ....................................... ':~ . 7/3/00 820 64,000 6,300 73,000 260,000 NA NA 550 NA NA NA 3/2/01 34 53,000 4,000 26,000 34,280 NA <2,000 <200 <200.. <200. <200 ' ~ dup <200 . 48,000 4,100 26,000 33,610 NA <2,000 <200 <200 <200 '~200 ...... ~(~(O ! n~5°_:.~ ....... .45~ .... 3,~ ........... :~.~??o_ ......... .?.~3~0____ NA nd<250.0, nd<50.0 nd<50.0 nd<50.0 nd<50.O 8/6/01 nd<50.0 40,070 7,280 16,800 70,350 NA nd<250.0 nd<50.0 nd<50.0 ~nd<50.0 nd<50.O 12/6/01 nd<50.0 ! 31075 5,160 18,650 2/18/02 0.6 1,100 1,410 3,270 27,500 . NA nd<2.5 nd<0.5 ' nd<0.5 nd<0.5 nd<0.5 ........ ~'~0~ ~-~'0-~ ...... ~-gj~6 ..... ~ ~7~ ~ ~'~--- ~ ~-~-b-6 ............. ~ .... ~ d~2~ ........ ~d~}'5' ........ hd<0.5 nd<0.5 nd<0.5 -"~'-~'~)03 :'"'B~-~ .......... ~}600 2-3.~ ......... '~,~4--0 ......... -9[~b ....... ~ ....... B-~2-~ ' nd<0.5 nd<0.5 nd<0.5 nd<0.5 8/5/03 nd<0.5 8,450 2,430 9,630 6,060 NA nd<2.5 nd<0.5 nd<0.5 nd<0.5 ~' ' 11/11/03 nd<0.5 8,200 1,380 8,904 31,050 NA nd<2.5 nd<0.5 nd<0.5 nd<0.5 nd<0.5 '' 7/3/00 <0.5 <0.5 <0.5 <0.5 <50 NA NA <0.5 NA NA NA 3/2/01 nd<0.50 nd<0.50 nd<0.50 nd<0.50 · nd<50 NA nd<5 nd<0.50 nd<0.50 nd<0.50 nd<0:50 - ~6~ ...... '~-~'b.5 ........ h-~'~ n'd'~6-.5 nd <0.5 nd<50 ' NA nd<2.5 nd <0.5 nd <0.5 nd <0.5 nd<0.5 .... 8~6'~i '- nd <0.5 ..... -~ ~b~ nd <0.5 nd <0.5 nd<SO . NA nd<2.5 n'~"~-~5' ' nd <0.5 nd <0.5 nd<0.5 12/6/01 32.9 555 105 425 2,650 NA · nd<2.5 nd <0.5 nd <0.5 . nd ¢0.5 nd<0.5 2/18/02 7.3 10 nd <0.5 79 380 NA nd<2.5 nd <0.5 nd <0.5 nd <0.5 nd<0.5 ~W-9 5/16/02 2.1 86 6.6 63 990 NA nd<2.5 nd <0.5 nd <0.5 nd <0.5 nd<0.5 8/21/02 1.8 7.9 2.8 9.5 50 NA nd<2.5 ' nd<0.5 nd<0.5 nd<0.5 nd<0.5 . 12/5/02 nd<0.5 nd<0.5 2.2 5.3 nd<50 NA nd<2.5 nd<0.5 nd<0.5 nd<0.5 nd<0.5 6/10/03 nd<0.5 nd<0.5 i.i'~ .... 3.37 nd<50 NA nd<2.5 nd<0.5 . nd<0.5 nd<0.5 . nd<0.5 ........ 8)-~0~ ....... ~'~'.~- ......... ~-~'~5-" nd<0'~5 ....... -~d~b~-~ ..... ~0- '~"~'i~'i/6~" ~ ~-~-~: ....... ~b~'~' nd'<0.5: ......... h~-~0~ ........ nd450 ..... ~ .......... ~;2~'5' n~<0'~' ........ nd<b'~5 nd~0'j5 n~o~ . E2C ~emediation T~ble 3-8 Project Number 1801BK03 January 30, 2004 T.~BLE 3 SUMMARY OF HISTORICAL GROUNDWATER ANALYTICAL DATA MR. FAST SERVICE STATION 600 Brundage Lane Bakersfield, California B T E X TPHg TPHdI TBA / MtBE OlPE ETBE I TAME WELLID DATE . / ~ug/L) 7/3/00 <0.5 <0.5 <0.5 <0.5 <50 . NA, NA <0.5 NA NA NA ~/3/~)~1 ....... r~)~)- ...... n-d-~o~-5~)'' nd<0.50 .... ~'~'~ ........ n'd~'~~ NA --n~-~0~ ..... n~<~.-~b--- ~d'<'~50~' ~d~'~' ~<~'~ .... 8/6/01 nd<0.5 nd<0.5 nd<0.5 nd<0.5 nd<50 NA nd<2.5 nd<0.5 nd<0.5 I. nd<0.5 nd<0.5 ~18/02 nd<0.5 14 0.7 25.7 215 NA nd<2.5 nd<0.5 nd<0.5 nd<0.5 nd<0.5 8/21/02 1.1 4.9 1.7 4.5 50 NA nd<2.5 nd<0.5 nd<0.5 nd<0.5 nd<0.5 6/10/03 nd<0.5 53.0 1,140 2,890 175 NA nd<2.5 nd<0.5 nd<0.5 nd<0.5 'nd<0.5 7/3/00 <0.5 ' <0.5 <0.5 <0.5 <50.0 NA NA <0.5 NA NA NA. ....... ~' 23~8i ........ n~;~8- ..... 3,660 ..... 2,6~ --1-~,-~8 ...... 1~;8~ ....... ~ ......... nd<-200 3/2/01' Well taken out of se~ice, silted up to 12 feet from bosom, replaced by MW-11R; conve~ed into VE well 6/4/01 540 11,980 1,390 7,230 54,410 <50 nd<250.0 nd<50.0 nd<50.0 nd<50.0 nd<50.O 2/18/02 140 1,560 1,090 2,440 22,000 .. NA nd<2.5 nd<0.5 ' nd<0.5 nd<0.5 nd<0.5 duplicate 140 1,320 ' 1,063 2,490 28,000 NA nd<2.5 nd<0.5 nd<0.5 .nd<0.5 nd<0.5 ~2~5~62 I' ~ ......... ~-5~880 ............ ~ ..... 3,050 19,000 NA nd<2.5 nd<0.5 nd<0.5 MW4 1R .... ~25 ~'7b'5 n84~o ....... ~;~6 ............ f3-0 .......... f6;8~ ..... 10~,686 ....... ~-A- .... ........ ......... ......... ......... .' 2/24/03 nd<0.5 25,000 4,000 19,500 48,500 NA nd<2.5 nd<0.5 nd<0.5 nd<0.5 nd<0.5 825203- ........ ~ ...... ~E~-'56 .......... ~7~ob .......... 6%~5 ..... ~;~-50 ". ........... ~-~ . E2C Remediation Table 3-9 Project Number 1801BK03 January/30, 2004 "' TA'BLE 3 '" SUMMARY OF HISTORICAL GROUNDWATER ANALYTICAL DATA MR. FAST SERVICE STATION 600 Brundage Lane . - Bakersfield, California B T E X T.H. T.Hd T.A I M, E D,.E I ET E I TAME WELL ID DATE / ' (Fg/L) , *, , 6/4/01 NSFP NSFP NSFP NSFP NSFP NSFP NSFP NSFP NSFP NSFP NSFP .... '8~/'~ ..... NSFp ....... ~'S-F~- ......... N'~' ..... ~P- ........ h~- ...... h-~ ...... N~-~P .......... -~ .... ~'~-~-~ ..... N~-~ ........ ~-~ ..... ~- NS'Fp ..... -N~ ......... N~-~- ....... ~E¢-~ ......... ~ ...... NSeC ........ ~SFP ....... N'~'¢ ............ -~ ...... ~'FP .... ~-~'~ 2/19/02 NSFP NSFP Ns-F-¢ ........ ~F--P ...... ~F~- ....... ~-~-~-~- ....... ~- ....... '-~-S ~- ...... ~-~ ........ ~-~'FP R-~¢~ .... 5-~/~ ...... nd<0:5 ~ 6 ........ 9~ .......... i'0-~-0- ..... ....... 8~6~ nd<o;5 ....... 8~-~ ........... ~-~810 .......... 4,~8~ .......... 7~,~'88 ............ -NA ............ n8;'~;~ ....... n8~8.~'. ....... n~<0~ ~'&-d~8:-5" ..... ~d-~8;~ ..... ~W-12 --~-~'"- ~ .... ~<'0;'~ 430 1,500 5,200 7,910 NA nd<2.5 nd<0.5 nd<0.5 nd<0.5 nd<0.5 6/4/O1 nd<50.0 nd<50.O nd<50.O nd<50.O 5,580 · NA nd<250.O nd<50.0 nd<50.O nd<50.0 nd<50.O -'-~/6WO~ NSEC- ........ ~-SFP ..... NS'F-P- ...... ...... 2V19/~8~ ~¢¢'- ': ......... ~F~- ....... ~ ......... NSFP NSFP NSFP NSFP NSFP NSFP NSFP NSFP 5/23/~- .... N~ ..... 'NSFP ........... N~ ..... --NSF~- ....... 127~b~ .......... ~ 4 ............. Y,~28- ...... 1,98'6 ....... ~4~8- ...... k~;'90--0 ....... HA nd<2.5 nd<0.5 nd<0.5 nd<0.5 nd<0.5 MW-13 duplicate 20 7,660 5,520 9,110 ' 38,000 NA nd<2.5 nd<0.5 nd<0.5 ' nd<0.5 nd<0.5 8/5/03 5.0 535 730 4,708 4,180 NA nd<2.5 nd<0.5, nd<0.5 nd<0.5 nd<0.5 duplicate 3.0 200 1,660 3,180' 1,370 NA nd<2.5 nd<0J5 nd<0.5 nd<0.5 nd<0.5 .... du.~li~e ..... nd<0.5 ......... !_1 .... 30 ........ ~ .......... ~,2.~¢_ ........... N_~ ....... nd~:~ nde0.5 .... nd~:.5 n¢¢0.~ ~¢.<0:5_~__. Table 3-10 E2C Remed~ar/on ' Project Number 1801BK03' January 30, 2004 T~BLE 3 SUMiVlARY OF HISTORICAL GROUNDWATER ANALYTICAL DATA MR. FAST SERVICE STATION 600 Brundage Lane Bakersfield, California I1' DATE B T E X ' TPHg TPHd TBA I MtBE DIPE ETBE I TAME WELL ID J . , · ~g/L) · , 6/4/01 871 - 1,494 . 371 . 1,057 9,240 <50 <25.0 -<5.0 <5.0 <5.0 <5.0 ~6/071- "7 165 ............ :1~-'~ ........... ~-5-6 ~'3~ .......... ~5~- .............. Duplicate 152 . 114 137 113 82 NA <25.0 <5.0 <5.0 <5.0 <5.0 ..... 5/~02 ........ 330" 13~400 1,240 12,320 34,000 NA nd<2.5 nd<0.5 nd<0.5 nd<0.5 nd<0.5 duplicate 18 10 19 87 2,120 . NA nd<2.5 nd<0.5 nd<0.5 nd<0.5 nd<0.5 ...... ~' ~)~70~ ...... ~i ......... ~ .......... ~- ......... ~b-f ........ %8-60 ..... MW-14 8/22/02 19 13 21 83 2,040 NA nd<2.5 nd<0.5 nd<0.5 nd<0.5 nd<0.5 duplicate 18 10 19 87 2,120 NA nd<2.5 nd<0.5 nd<0.5 nd<0.5 nd<0.5 12/5/02 3.1 18 16 101 1,860 NA nd<2.5 nd<0.5 nd<0.5 nd<0.5 nd<0.5 ..... ~')'~-~-203 ............ 7.6 .......... ~.~ .... %b<~;~ ..... ~.~ ...... ~ ,~- ........ duplicate 24.8 27.5 11.8 38.1 1,620 NA nd<2.5 . nd<0.5 nd<0.5 nd<0.5 nd<0.5 ...... ~765 ..... n8<0;5 ....... ~0~ ....... ~6~5 .............. nd&-6~E .... n-d~6 dup nd<0.5 nd<0.5 nd<0.5 nd<0.5 nd<50 NA nd<2.5 nd<0.5 nd<0.5 nd<0.5 nd<0.5 ......... 8/~0~- ............ ~8~8-~'5 .......... n~.~4.4 9.0 nd<50 NA nd<2.5 nd<0.5 nd<0.5 nd<0.5 nd<0.5 -~_. ~7~/~?~'~'~._..~-d~¢0.:5 ....... ,~0.5 _, nd<0.5 nd<0.5 nd<50 NA- nd<2.5 nd<0.5 12~/01 NSWD NSWD NSWD NSWD NSWD NSWD NSWD NSWD NSWD NSWD NSWD 1 2151~ ...... N-S~5 ....... ~5 ..... -N~-~- .......... ~ ........... ~D ........... R'S~5 -- NSEC- ..... N~D ........ -N-S'~-~ ..... ~ ~'W-5 ~-W'5 .... ' "~F 6i0~' ..... ~w-5 NS~-5 ...... ~-~-W-5 ............. ~'~W5 ..... ~W5 ......... ~W'5 ........... ~'5 ............ -~W5 ........ '~-~'wB .... ~w5 N'Swu - E2C Remediation Table 3-11 Project Number 1801BK03 January 30,~2004 TABLE 3 '" SUMMARY OF HISTORICAL GROUNDWATER ANALYTICAL DATA " MR, FAST SERVICE STATION · . 600 Brundage Lane Bakersfield, California WELL iDI DATE [ ......................... ~' I ........ z........... ' rl ................ ' E t ......................... X L..- ........... TP,,~._.. ...... ,I ...................... TP,d ,I ......................... TBA .I ...................... r~t~E : .................................. ,,PE I ETBE, .................................... I TAr~E · / . , . " (pg/L) ' ' , · · , · 12/7/01 nd<0.5 nd<0.5 nd<0.'5 nd<0.5 85 NA nd<2.5 ' ND ND ND nd<0.5 ...... ~'~)~2 25 ................. ~,-6--:~0- ...... -n-d-<~;5 ........ ~ ,-'7-0-0 .......... 10,~0~3-0-- ' N~ ........ ~J~2-~,~ n'd~0.5 ....... n-~:~-.~ ....... ' r~-0'.-~' nd<0,5 -i'2~,~-/-0~ ....... nd'~0.5 .......... ~d-~).5 .............. -2'~ -~1 .~ ........... ~d-~5-6 ...... N-~: ...... nd<2.5 nd<0.5 nd<0.5 nd<0.5 nd<0.5 ...... -8~,~)~ ...... nd~0~5 ......... ~-~-0~5- .......... -~.-0 ......... ~-.O ..... nd<50 NA nd<2.5 nd<0.5 nd<0:5 nd<0.5 nd<0.5 12/7/01 .. NSWD NSWD NSWD. NSWD NSWD NSWD NSWD ' NSWD NSWD NSWD NSWD ...... 872 ~]5'E- ........ N~Wb -N'~-~5 ............ ~-WD .... ~I~V~- - NSWD NSWD NSWD NSWD NSWD NSWD NSWD ..... -i-2/5/-0-~- N~/D N-s-w~ ........ N--S-~ .......... ~S~W~' .... "~N~V~5 .... N'S~D- '--~-~w--~ ....... ~S~/D i~-~-~1~ ..... R'§~D ...... I~'S-~D ' .... 6~1 o ~/-0-3- ....... NSV~5 ......... N~w~ .......... -N §~/~ 5 .... NSWD NSWD NSWD NSWD NSWD NSWD NSWD NSWD 12/7/01 NSWD NSWD · NSWD NSWD NSWD NSWD NSWD NSWD NSWD NSWD NSWD 8~22~02 NSWD NSWD NSWD NSWD NSWD NSWD NSWD NSWD NSWD NSWD NSWD ' i--1-~-~/-~-3 I~is'W-D' ..... NS'~D .... i~S~/D ........ N-S-V~/-D- ....... ~ ~W-E~ .... N~WD ..... I~i~(~D .... NSWD ~ ~-I~ .... -I~iJ5 N~Wi~' E2C Remediation Table 3-12 . ~ Project .Number 1801BK03 i January 30, 2004 T~,BLE 3 .. SUMMARY OF HISTORICAL GROUNDWATER ANALYTICAL DATA 'MR. FAST SERVICE STATION 600 Brundage Lane Bakersfield, California B ' T ' E X ' TPHg TPHd TBA I MtBE DIPE ETBE I 'TAME WELL ID DATE I .. (,ug/L) 12/7/01 nd<0.5 nd<0.5 nd<0.5 nd<0.5 135 NA . nd<2.5 nd<0.5 nd<0.5 nd<0.5 nd<0.5 2Ji-8-/-(~2 ..... ~-d'~0.~5 ..... ~d,~'~5- ......... n~J~ ...... ~<~i~5-i ..... :--n-d-~)~) ............ N~, ...... nd<2.5 nd<0.5 ;"n'~i'~-o~5 ..... i r~'i5 nd<0.5 - ~)~J0;; ........ ~a-<~';~- ....... ~-8;0~,~'''-':- .... r~a-<~;~ ..... "" ~-a~67,~ ........... -~a;~0 ........ ~ .... ~1'8;E,~ nd<0.5 nd<0.5 nd<0.5 nd<0.5 8/¢~i6~: ....... ~8 <-~'.-,~ ....... fl-(~-~(~:~ ......... r~1~6;5- ...... n d~<-0-. ,~ ............ ~id<--~-0- ............ ~ ........... ~8;"~-5-'-; ...... ~-'~id-<0'.~ ..... ~d~-0~5 .... ~ 2)5i~ ........ nd-~:-~)~ 5 nd<0.5 nd<0.5 nd<0.5 · nd<50 NA nd<2.5 nd<0.5 nd<0.5 nd<0.5 nd<0,5 iVlW-17S 2~24~'(~':~ ........ n-d~)':5 .... .-' ~d<-(~:~ ....... ~'d~-.5- ...... ~5,~5~-,~ ....... -n-~5 ........... : ~'~, ...... -r~d-<2.~-' ...... n-d~51~ ...... ~1-~51-~ ...... ~1-~(~?) ...... "nd~.',~-- 6J:l 0/0~ ......... n-d ~'~)-.'5- ........ nd<0.5 0.56 1.60 nd<50 NA nd<2.5 nd<0.5 nd<0.5 nd<0.5 nd<0.5 815103 nd<0.5 nd<0.5 nd<0.5 nd<0.5 · .nd<50 NA nd<2.5 nd<0.5 nd<0.5 . nd<0.5 nd<0.5 11/11/03 nd<0.5 nd<0.5 nd<0.5 nd<0.5 nd<50 :--N--A ..... nd<2.5 nd<0.5 nd<0.5 -~d~5[~ ...... n'~0-15- ' 8/22/02 36 nd<0.5 4.0 4.5 nd<50 NA nd<2.5 nd<0.5 nd<0.5 nd<0.5 nd<0.5 · i2/5/5~ ...... ~.-'i ......... ~d~'6~ .......... ~?i0 ............. ~)':§- ....... nd~ .... ? ..... ~-,~ ........ ~<~2.5 nd<0.5 nd<0.5 nd<0.5 -nd<0.5 2/24/03 nd<0.5 nd<0.5 nd<0.5 nd<0.5 nd<50 NA nd<2.5 nd<0.5 nd<0.5 nd<0.5 nd<0.5 MW-18 ' 6/~E~/0~ ......... ~1-<5~)- ......... ~d<b~-,~ ........ r~5.~- ...... r~c~'d:,5 ...... n-~l-~-(~ ........... [',IA- ........ ~-d-~-'~5-1 8/5/03 nd<0.5 nd<0.5 nd<0.5 nd<0.5 nd<50 NA --n-~l~-2.5 ...... n-d~<-0'.-5 ' 'i 11/11/03 nd<0.5 nd<0.5 nd<0.5 nd<0.5 nd<50 '~ NA nd<2.5 nd<0.5 nd<0.5 nd<0.5 nd<0.5 Notes: Sampling performed by E2C starting 01/03/01 MTBE analysis by EPA Method 5030~8020 from10/20/98 to 1/3/01 NSWD = Not SamPled this Quarter; well dry MTBE analysis by 'EPA Method 8260b from 1/3/01 NSFP = Not sampled this quarter due to presence of'free-product :lesults in micrograms per liter (pg/L) = pads per billion (Ppb) NSWS = Not sampled, well dry, casing silted up 12 feet from bottom , B = Benzene T = Toluene DIPE = Diisopropyl Ether TAME = Tertiary Amyl Methyl Ether '~ E = Ethylbenzene TBA = Tertiary Butyl Alcohol (a.k.a. tert-butanol) ETBE = Ethyl Tertiary Butyl Ether TPHd = Total Petroleum Hydrocarbons as Diesel .. MtBE =.Methyl tertiary-Butyl Ether TPHg = Total Petroleum Hydrocarbons as Gasoline " NA = Not analyzed for this compound X = Total xylenes ND = Below Practical Quantitation Limits: BTEX-0.5 pg/L, TPHg-50 ,ug/L, and MtBE/DIPE/ETBE/TAME-0.5 pg/L; TBA-2.5 pg/L E2C Remediation Table 3-13 · . January 30, 2004 Project Number 1801BK03 ' TABLE 4 -- suMMARY OF ONSITE VE/GASS MONITORING DATA Mr. Fast Service Station · ' · 600 Brundage Lane Bakersfield, California Cumulative Cumulative nlet Well Well Well Well Dilution Field Field : Cumulative Cumulative Cumulative Date C~lendar Operating Operating :low Chamber Stack vE-2 VE-3 MW-1NE-4 MW-8NE-5 Air TPH in TPH out Lbs./Hr. Lbs. Lbs. . Gallons . Monitored Days Hours Hours· (scfm) % LEL Temp. (°F) Temp. (°F) valve valve valve valve valve (ppmv) (ppmv) Extracted Extracted Destroyed Extracted 4/4/02 0 3485,0 3 ·261 4 650 757 O O O O C 950 5.2 3.4 10.1 10 1.5 .... ~!.5_/.0.2_ .......... ! .3~5~L_° ..... 2-5 ........ ~26_~ ...... 4~ .... _6_5_0L ........ ~_~_6_ ....... g_ ..... ~ ....... _0. ........... g ...... c_ ..... _~_5_ o_ ...... _5 ._4_ ...... 5~. ............. 4_~ ._7_ .... ~4 §:§ ...... 4/8/02 4 3579.0 97 240 4 628 692 C C O 0 C 940 9 3.1 286.5 256 40.0 4/'I0/02 6 3624,5 142.5 313' 3 716 722 C C O O C __7_0_0 .......... 1._0~ ....... _3..(~ ...... _4-0_2_:1~ 3-~8 6_~:_2 ...... 4/t5/02 11 3747.1 265.1 · 276 3 668 679 C C O 0 C 400 2 1.5 586.1 580 90.7 .... 4/_1__6_/(~2_ ........... 1_.2 ..... 376_7_.-3_ .... ~,__5:3_ ......... 18.0_ ...... 3 ...... ~6_82~ 6~7_1 ..... ~C~ _ ~C ...... _O. ........ O_ .......... C 3~80_ ..... 1_ ............ _0._9_ ....... 60~4._9 ...... ~5~9 ...... 4 ........ 676 751 C C O O C 180 1 0.6 617.4 611 95.5 4/17/02 13 3789· 1 307,1 235 ~ i i ~ ....... ~7~3- ..... _4_(_2_9/02_ ...... 2_~ ......... .?0~-6:~ ......... 5_94_.~_ ....... 2_5_6~ .-3_ __65~6 ...... 6_2_5~ ...... _c_ .... :C_ ......... ? ...... 9_ ....... c_ ..... _3_9_o ....... ._3 ........ :~.,5. ......... ~_~0_~:6__ 1~90_ .... 2~p ~ ._5_ . 5/2/02 28 4148.1 666.1 160 3 655 632 PO PO O . .O , C 240 1 0,5 1340.2· 1327 207,3' .... ~_/6__/0_2 ......... 3~ ........ 4~32_:~ .......... 75_-0.~0 ...... 253 __.3 ....... 63~3 .... 6~11 ....... _P__O~ _.. P_0 .... _O ............ .O_ ........ _C~ ,_ _~2__0_0.~ ........ 0_ ....... (~._7_ ..... ~1_377:.9._...- , ~1384 .... ~1__-6,_2_ · ._ .._5/1___4/~02 ...... '~0 ........ 44_2__6:_9_ .... 9~:4:9_ ..... ~_5_2 ......... .3_ ..... . _63~1 ...... 6_1~8 ...... _PO_ ...... ?_O ........ 0_ ......... _O_ ......... _C_ ........ 9~5. ....... 07 -0..._3_ .......... "~ ~._6_1_,__4 1447 .5/21/02 47 . 4428.6 946,6 283' 3 658 615 O O O O C 300 0.4 1.2 1463.3 1449 . 6/7/02 64 4657,9 1175·9 208' 2 668 612 O C O O C 49 0.2 0.1 1617.9 1602 _ _ .6_/j.-~/~ 2_ ........ -~4~ 47. ~-3_:5_ ..... 1_ _2'~ 1_..5_ ..... _2_2_8~ ..... 3_ .... ~65_9 ......... 599 ...... . ~: ...... C_ ........ _O. ............. .O_ ..... C~ ......... _62--0 ....... -0.:2_. ~ ..... '!t9 ...... J §-36:~ 1620 6/24/02 81' , 4920.0 1438.0 187 3 661 619 O C O O C 46 0.2 0.1 1655,7 1639 256.1 7/1/02 88 4920.8 1438.08 194 5 625 667 O C O 0 C 1000 1 2.6 1657.8 1641 256.4 _~7/~1_0/.~_2 9.7 .... _510_.6_.~i_ ~1~6_2_4~:_1 .... ~2_6-7~ ..... 4____ _[_ 6~1~_4~ ....... 6~5~6 ..... ~O ..... ~C. ......... .O._ .......... ~ ...... _C .... 30 ...... _0_ ......... 0-'[ .......... . 1_~77:9- ..... 16-67 8/12/02 130 5128.1 1646,1 281 2 648 605 O · C O O C 40 0,4 0.2 1681,3 1664 260.1 9/24/02 173 5348_.~ ......... _18~6-6.:~ ..... 2._?_2_ ..... ~3 ......... _6__3_0_ ....... 60~11 .... ~ ....... C_ ....... _O_ ....... _O_ ..... ~C_ .......... _2_0~ ...... -0 ............. _0:.1_ ........ ~ 70_~:_5- ..... !~8~ ..... '1-1}1-0/-0~)- ....... 2~0 ' 5350 8 1868.8 338 2 653 594 O C O PO C 68 0 0.3 1702,2 1685 263.3 _ ._1_'!.(_1 ~-/_0_2_ ........ ~_ _5__37_ 7_ _1 ........ 17~_5:1_ ..... 2_4_1 ....... _3. ......... _65~2 ............ 6~1_1_ ..... _O_ ..... ~_ ........... O ........... _(~ .............. C_ ......... 5~2_ ..... 0 ......... 0_._2. ........ !.70_6:7 ~1690 .. 11/22/02 232 5615.5 2133.5 235 ..... 648 ' 609 O c , O O C 38 0.6 0.1 1735·6 1718 '268.5 __1_2/_2/~0 ~_ _24.2~ 5617.5 2135.5 310 4 657 625 C C O O' C 120 0 0.5 1736.6 1719 268.6 12/9/02 249 5657.4 2175.4 300 5 655 597 C c o o C 90 0 0.4 1751,3 1734 270,9 12/16/02 256 5721,3 2239.3 300 2,3 655 597 C C O O c 90 0 0,4 1774·7 1757 274,5 1/3/03 274 5722.0 2240.0 274 1.8 653 609 C C O 0 C 200 0~ ..... 0.7 1775.3 1758 274.6 ' ~-/~i~(~ 286 6013,9 2531.9 248 1.0 636 612 c c o o . c 102 0 - (~i~3 i ~1~'~5'i~' 1857 ' .~9_0:'~ 6 i'~4-'~ ....... ~'~'~ ...... ~'~ ....... :1-~ ...... ~,~ ......... ~2 ........ ~- ..... ~ ~ ..... ~ .......... -(~ ............ ~ ...... 0'~ .......... i-'i-: '~ 87-~'-~ 1858 290.3 _. ~_/~9_/-03~ .......... ~op 6_ :. : . 2/10/03 312 §~52:8_ 2~6_70.8 .... ~7_3_ ..... 1_..3 ......... 62~4_ ......... ~9_2 ........ ~_ ..C_ .... O ..: ,O.. .......... C_ .......... 8-0 . .0 _0:3 , '~9~7..5. 1898 ._2~6:~ I 2/21/03 323 6153·7 2671.7 222 1.6 654 613 C c O O C 180 0 0.5 1918.0 1899 , 296.7 '"~/~-i~ ' 330 6320.9 2838.9 248 0.8 630 609 C c o O c 64 0 0.2 1954.1 1935 302.3 E2C Remediation Table 4-'1 Project Number 1801BK03 January 30, 2004 TABLE 4 SUMMARY OF ONSITE VE/GASS MONITORING DATA Mr. Fast Service Station 600 Brundage Lane Bakersfield, California Cumulative Cumulative inlet Well Well Well Well Dilution Field Field Cumulative Cumulative Cumulative Date Calendar Operating Operating Flow Chamber Stack VE-2 VE-3 MW-1NE-4 MW-8NE-5 Air TPH in TPH out Lbs./Hr. Lbs. Lbs. Gallons Monitored Days Hours Hours ' (scfm) % LEL Temp. (°F)! Temp. (°F) valve valve valve valve valve (ppmv) (ppmv) Extracted Extracted Destroyed Extracted __ ~_/_3_/-0 ~_ ...... ~_3. '_3 639~3_.0 ........ _2.?~_1.._ .-0 20~ ..... .!...5_ _ __6_61~ ........ 62_ 4 ........ .C_ .... C~ .......... _3_/_6_/_03_ .......... 3_~6 ........ ?r6_8.:5 ....... _2_9_§.6z~ .... ;164 . ;?'.3 ........ §_3.3_ ....... _6_00_ ..... C_ ....... __C___ _ __0_ ........... _0_ .................. C_ ........ 78 0 0.2 1971.2 1951 304.9 .... 3~/_1_7_/0:3 ........ ._34? .... 6469~.1 .............. ~9_8_7._1_ 2~6 ¢~.2_ ...... 6_4~4 .... ~58_9_ ........ .C_ ......... _C_. ......... _0_ ................ _0__ ............ _C_ _ _12_0__ _ __0-.__4_ ..... _0_.4._ ;1. 9_-~_1_ ;_ _4. ......... 1_~5~ ...... 3~_.~ ..... __-3/_2__5/_0_3. ....... _3_.~5, ........... _6_6.6_0:;I- ........ 3_178.1_ _29~ _ 0;_8 ....... 6--2_9 ........... 6_0_8_ .... C _ .__C ....... _0_ ...... O_ _C_ ........... §8_ ...... _9 ........ .-0..~ _2~0-1.8_-9 ..... ]9_9~ ....... ~'1_2:3 ..... ____4/_3f0_~3 ............ 364 .... 6_8_7_2.~ ........ _3__3.9__0.~3 ~6'~ 2.L1_ .._ 7__06~ ___ 6_5~ ........... C_ ....... (~ ........ _0_ .............. _0_ ..... _C ......... 3_0_ .......... _1:1_ .... ?..'~ ....... ~0.,~.;1._.8_ .......... ~0_2;1 3.!5_'8_ ...... 6/6/03 428 6872.3 3390.3 147 3.6 623 533 C C 0 0 c , 100 0 0.2 2041.8 2021 315.8 ,, _6.~_1_0-/q3. _; ...... .4_3-2 ....... 695~9._8 ....... _3~7_ ~:§ .... 2~6_.' 3.6 675 585 C c 0 0 c 85 0 0.3 2066.7 2046 319.7 _6_/!_6_/0-3 _4_3_8_ ........... 7_0_0_.5_.._4 ~5__2_3_:~ _283 I 1:! ......... 6'32 ........ 5~98_ ..... _C ..... _C ...... ~_ .... ?_'_ .......... _C_ ........ _1_~_0 ...... _0 ....... 9,_5 ..... ~O_8Z,~ ........ 8__06_7_ ....... 32_~._9' Machine was shut down for replacement due to Iow influent concentration Notes: scfm = standard cubic feet per minute LEL = Lower Explosive Limit ppmv = parts per million volume · Lbs./Hr. =·pounds per hour O = Valve Open C = Valve Closed PO = Valve Partially Open Project Number 1801BK03 JanuaG' 30, 2004 TABLE 5 SUMMARY OF ONSITE HYDROCARBON MASS REMOVED USING VF_.JGASS (based on influent concentrations) " Mr. Fast Service Station 600 Brundage Lane Bakersfield, California HC'Removed Cumulative HC Removed Influent Concentrations Flow Rate Run Time Daily Removal Rate MOnth/Year (lbs/month). (lbs) (ppmv) (scfm) (days) (lbs/day) Apr-02 0 0 0 0 0 0.0 May-02 1,517.3 1,5i7.3 · 678 .... i .... ~54 ....... 27 56~ S_e_ ~-_ .0_;~ 13.2 . 2,216.0 ..... F_~_b_-_03_ .... 156.1 2,576.6 119 . Jun-03 , 67.3 2,766.7 102 225 9 7.5 I Where: Hydrocarbons Removed (lbs/month) = Influent Concentration (ppmv) X 10'" X Influent Flow Rate (scfm) X 1 lb-mole/379.5 ft3 X 86 (lb/lb-mole) X 1440 (rain/day) X Run Time (days/month) · Cumulative HydrOcarbons Removed Based on lnfluent Concentrations (Since April 2002) I 3000 - 60 50 2500 :--/ ,~~.~ - ~'2000 . .......... ' . 40 O E 30 I 1500 '~ 1000 20 '~ Apr-02 May-02 May-02 Jun-02 Jul-02 Aug-02 Sep-02 Oct-02 Nov-02 Dec-02 Jan-03 Feb-03 i Month-Year ! I I, E2C Rem edia t/on Table 5-1 i 180iBK03 January 30, 2004 Project'N~mber · TABLE 6 -SUMMARY OF ONSITE HYDROCARBON MASS REMOVED USING VE/GASS (based on %LEL) Mr. Fast Service Station 600 Brundage Lane Bakersfield, California I HCRemoved Cumulative HC Removed LEL IFiowRate RunTime I Monthly Removal Rate Month/Year (lbs/month) (lbs) (%). (scfm) (days/month) . (lbs) 0 0 0 0 0 0 ' ' ...... May-O~2 1,050.0 1,050.0 3.4% 254 27 27 Jun-02 672.4 1,722.4 · 3.0% 237 21 21 Aug-02 374.5 2,423.7 . 4.0% 231 9. . 9 Nov-02 3.1 2,480.9 2:5% 275 0.1 0.1 335.6 2 816:5 2.5% ' 271 ....... " ii D~-02 ......... '~ -11 Jan-03 228.-9' 3,043.4 · 1.5% ~3' ! i~i'~ .:~'8'.'6 Feb-03 248.1 3,291.5 1.4% 255 ......... ]5..8 !.5.7 Apr-03 47 2 '3,670.0 , 1 5% , 236 ' 3.0 Where: * Influent Concentration assume 100%.LEL =13,800 ppmv calculated as hexane LEL estimated from difference between oxidizer and stack temperature. 1% LEL = approximately 25° F difference Hydrocarbons (lbs/month) = Influent concentration (ppmv) x 10'" X influent flow rate (scfm) x 1 lb-mole/379.5 cf x 86 lb/lb-mole x 1440 rain/day X run time (days/month) Cumulative Hydrocarbons RemoVed Based on %LEL r (Since April 2002) 4000 ' . 35 ~2000 E ~ 1000 Apr-02 Jun-02 Sep-02 Dec-02 Mar-03 · Month-Year ; project Number 1801BK03 January 30, 2004 TABLE 7 SUMMARY OF OFFSITE VE/GASS MONITORING DATA Mr. Fast Service Station 600 Brundage Lane Bakersfield, California Cumulative CumulativeInlet Well Well Well Welt Well Well Dilution Field Field CumulativeCumurative'Cumulative Date Calendar Operating Operating Flow Chamber Stack VE-6 VE-7 VE-8 VE-9 MW-11 MW-12 Air TPH in TPH outLbs./Hr.Lbs. Lbs. Gallons Monitored Days Hours Hours (scfm)% LEL Temp. (°F) Temp. (°F) valve valve valve valvbvalve valve valve (ppmv) (ppmv) Extracted Extracted Destroyed Exlracted 2/28/03 0 2352.50 2.68 212 1.1 1556 1450 3/40 C O O O O O 210 0.2 0.6 1.6 1.6 0.3 3/1/03 I 2370.47 20.97 219 · 4.4 1524 1414 C C O C 3/40 3/40 O 20 0 0.1 2.7 4.3 0.7 Notes: scfm = standard cubic feet per minute LEL = Lower Explosive ,Limit ppmv = pads per million volume LbsJHr. = pounds per hour O= Valve,Open '. C = Valve Closed 3/40 = Valve Open 3/4 E2C Reined/at/on Table 7-1 Project Number 1801BK03 January 30, 2004 · TABLE 8'' .. SUMMARY OF FREE'PRODUCT/GROUNDWATER PUMPING' .. MR. FAST SERVICE STATION 600 Brundage Lane BakerSfield, CalifOrnia Date ! Gallons Pumped Accumulative Gallons - ~., !.5_.0 ......... ; 2~!.50 4~23/03 2,710 4,860 5/6/03 2,620 7,480 5/21/03 2,470 9,950 · : "6/5/03 "' 243-0": ; . ...... . "i'2'3~0' ; ..... 6/18/03 105 12,485 7./ ~_ 0./-~.3 2_,.9.~_0 _1_..8_ ,_0_.3_5 ......................... .... 7/28/03 ~2.;~_0 . 20,895 . :...8/28/~3_ 2,640 25 785 9/11/03 2,760 28,545 9/29/03 2,280 30,945 .................. 1_.0_ _/9/_03 ........................................ · 33 715 .................... ! ~)/2.4:_/03 2,390 . 36,105 12/17/03 138· 36 443 .............. '! ./~.3.(04 385, ~.36,~28 i E2C Remed(ation, LLC Table 8-1 I Project Number 1801BK03 Januaw_ 30. 2004 I Appendix A Fourth Quarter 2003 Groundwater Purge Data Sheets I Appendix B Fourth QUarter 2003 Groundwater Analytical Laboratory Report ,. '1 Appendix C Free-Product/Water Disposal Manifests ~ " I E2C Remediation , Appendices I Project Number 1801BK03 'January 30, 2004 ~ " ! ~ .' .! ! ! ! APPENDIX A I ' Fourth Quarter 2003 Groundwater Purge Data Sheets I I I I I I E2C Remediation Appendix A ~ REM D ATI ' ' I WATER QUALITY SAMPLING RECORD · ,= EnviroamentalConsu!',a.~'.s AND WELL DEVELOPMENT DATA Gmund,¥a..r Scientists: 53C0 Wcodmete Or., Suh, e 105 B ~k~ts~Je;d CA 93313 ........ SAMPLE iD'OR WELL NO.:' . ~._ ~ DEPTH TO WATER: ql,~ TOTAL DEPTH OF WELL: ~.O~ pROJECT'NO.: PROJECT HAME: _. ~ ~: ~,~ WELL DIAMETER: DATE: Il~ i~ ~O~ CASING VOLUME: SA~,~PLEO BY:_ '~,~ ~ ~¢~ h~ETHOD OF PURGING: -''" ' ~ P6~ CkARACTERISTICS TEMP pH SEC SAMPLE-'. RE,MAR'KS TIM~ Ih~TAKE RATE CUM. VOL WELL VOL (?) (UNITS} (:.~mhos/ COh~TROL D~PTH (GPM) (GAL) PUMPED cra) ~;O. (COLOR, TURBIDLY, ETC.) I WATER QUALITY SAMPLING RECORD AND WELL DEVELOPMENT DATA Orc, undwatar Scientis[s: Envir.3nmen[al Consukan:s 53C0 V,'oodmere Or., Suite 105 Bak~s~!erd, CA 933~3 ......................... DEPTM TO WATER: ~ ,~% SAMPLE ID OF WELL NO.: ~'T 2~ - · , - TOTAL OEPTH OF WELL: p. FOJECT NO.: ~FOJECT HAME: N~ ~S~ WELL DIA¢',IETER~ ~¢ )ATE: i i '- I [-- 0'~ CASING VOLUME:~ 2,0 9a!:°ns SAMPLEDBY: '~ '~ ~o,2~-~- METHOD OF PURGING; ~i1~_ L~FT' P6~GE CH,A~A&TERISTI&S:" - TEMP pH SEC .. SAM*LE .' l' REM,AR'KS TIME -iNTAK~ RATE . CUM. VOL WELL VOL (?) (UNITS) (:.tmhos/ CONTROL · DEPTH (GPM) (GAL) pUMPEO cra) ' ' ' NO. (COLOR, TURgIDlY, ETC.) ~=~ATIO;' /STAHOARDIZEO --'T.^ !;H 1,3.~ V,,.=!lCa2a::%,: 2'- 0.1632 ga~Tor, line~r[c':" ~ . ' ,!' 0.6523 ga:;or,1~nearfc°L .... ~ I I _ , ,,- I ~;DTES: · Grc. qndwa:er Sci.=,nt~st-~: Envir:,,amental Con-~ut',an',.~ AN D W ELL D EVELOPM E NT DATA 5300 V/oodmere Dr., Su!:e ~05 Bat<~rs¢ie~d. CA 93313 ............ S&MPLE ID OR WELL NO.: '~"~ DEPTH TO WATER: ~)..%~ fi , TOTAL OEPTH OF WELL: %~- ~ f; pROJECT NO.: OJECT NAME: ~. ~,r WELL DIAMETER: _ . - ' CASING VOLUME: ~. O ~ 9~!:°ns SAMPLEO BY; '~ 4 ¢~ "~¢~ METHOD OF PURGING; ~.il~ ~¢T TIME - INTAKE RATE CUM. VOL V,'~L VOL" (?) (UNITS) (:~mhasl/CONTROL DEPTH _ (GPM) ~ (GAL) PUMPEO ' ' cra) U NO. (COLOR, TURBIDLY, ETC.) ATIO;q / STAHDAROIZEO V,,.=!i C~..-,:~:;I),: 2' - 0.1632 ga!lor.,lin-=ar J¢_,c,~ i ,LUTIO,'I pH'4.01 t I 7.0 . 4' · 0.6523 ga'.ior'YJinear Do( ;;T F, 5 .Oi, ,.¢ J ;~~ I 74 I 713 I ~':~ J e I -- I I I .I ~__.____-~~ ..___-- I'-- i I I I =' '^ . ..... C.,OP G.~,,_S. · · 'FREADL":3 . : . 'i.~'~,,,q.~ FT. 3CASh"iO",D'-U...:==_ .~ I ' WATER QUALITY SAMPLING .RECORD Ort, undwa'.er Sci-~2tist$: Envir::)amenlal Consul:an'.s AND WELL DEVELOPMENT DATA 5300 Woodmera Or., Su!ta 105 Bakar$~!eld, CA 93313 .......................... SAMPLE lC) OR WELL NO.: ~,~.¢. _i..~ DEPT:'4 TO WATER: ~.,%.$'~ , . · TOTAL DEPT'H OF WELL: %W ~'~% :FOJECT t'.10.: OJECT I'.IAME: ..._iv~E. ~'$I~ WELL~ DIAMETER: ..~¢ :)ATE: ~ t ~"0_~-~ CASING VOLUME: i ,~ Caf:oas METHOD OF PURGING: ¢~/L. SAM?LEO BY:_ 'Df~z._"- A- 1/)--d~ '~-)'--- ...... .... TE,'.,* S_ C :- TI.LIE ~ I RATE CUM. VOL -~:ELL VOL ' (?) (UNITS) (:.~mhos/ CONTROL DEPTH (GPM) (GAL) PUMPED em) NO: (COLO.=,, TURBIDI]'Y, ETC.) ~LUTION I pH 4.01 f. 7.0 I:::H "i,3.0 I ,, ' 4' · 0.5525 gar~or..,'~;near f~ol CC~NDUCTA;tCE · C~LI~.-,ATIO,~ 5:'543 J C"rRILCAL 74 I ?~8 I 1413 _J 6853 J f REAOP:3 J I I I . I I' ND?ES: F_~.C-~¢~-L-'~. WATER QUALITY SAMPLING RECORD Or~,undv~a,,er Scientists: Enviranmenlal Consul~ar,',$ AND V/ELL DF_VeLD, ,~ ENT DATA 5360 V/codmere Dr., Su~:e 105 Baket~f!e;d, CA 93313 .............................. AbtPLE ID OR WELL NO.: ~(~ ._~ DEPTH TO WATER: ~ ~ROJECT NO.: TOTAL DEPTH OF WELL: CASING VOLUME: ~. ,AMPLEO BY: ~ ~ ~,~¢;.~ _ METHOD OF'PURGING: ~& ~ PURGE C~ARACTERISTICS TEMP pH SEC . SA~,IPLE- REMARKS TIME INTAKE i RATE 00,%1. VOL ~','ELL VOL (?) (UMITS) (:xmhos/ CONTROL DEPTH (GPM) _ (GAL) PUMPED cra) ' NO. (C~LOR, TURSIOi~, RATIOH / SI'AHOAHDIZEO ~ ~ V,'.::I Ca2a:;!y: 2' - 0.1532 ~LUTIO>I I pH4.0~ I ~'f7.0 I pH 10.0 I . ' 4'. 0.6528ga:lor,'~:nearb°t I I ~~i; R~ '.o~,,:a I ....... SA}.IPLEO AT: ~ .~ ..... I NDTES: I · I WATER QUALITY SAMPLIhlG RECORD Grt, undw'a',ar S¢ienti-~t-~: Envlr.:)nmanta:l Consu!~a.'~'.s AND WELL DEVELOP~AENT DATA 53C0 V;codmere Dr., SuTte 105 Bakers~ d CA 93313 ' · ........... · . .. ~. E.' ..................... SAMPLE ID OR WELL NO.: ~.~ DEPTH TO WATER: L~. ~ , TOTAL DEPTH OF WELL~ ,~..~ o )ROJECT NO: ~ROJECT NAME: ~.~. ~ ~'r WELL D~AMETER: )ATE: j~- ~-0~ CASINGVOLUME:~ ~( ga!:ons SAMPLED BY: ~ 4 ¢~':~¢~ METHOD OF PURGING: A~ M VD ~*'-LL VOL · TIME INTAKE RATE GU , ~ ,~, . I (?) (UNITS) (~mhosl CONTROL (Gp,~,l) (GAL) J :U,,IPEDJ cra) - NO. ~ (COLOR. TURSIDt~, ETC.) 1' I , I 4'1 / STA,'IOAROI/EO ' V/.~rl Capa:;b': 2' · 0. i832 ga!lot, lit, ear ),~UTION J pR4.01 J t 17.0 pH 10.0 J .. , 4'. 0.6523ga:;or, q~nearfo°t ~E '.o:,,;o I I I I .. ~~~ I 74 I 713 I 1413 _J 6858 J NT READP;3 ' J ' S.AMPLEO AT: . ~, O ~. FINAL DEPTH TO VL&TER: ql, I ~ FT. 3 CASING V2LU'. ES'= %,~¢ GALS. I I WATER QUALITY SAMPLIMG RECORD ' · Dr_V~-LO, ,/ENT DATA Gr,.,und 53~0 Vi¢odmete D;., S~!te 10:5 Baker$~!e~d, CA SA~,tPLE ID OR WELL NO.: ~/~kJ'?7 'DEPTH TO WATEFI: ~''~' 30 fi :ROJECT i'.10.: )ATE: . i ~ - )2 - ~.~'3 CASING VOLUME: 'TI~,IE INTAKE RATE CUkl. VuL V/ELL VO~ (?) (U~iITS} (~mhos/· CO,XTAOL DEPTH (GP~,I) (GAL)' . pU~,IPE0., ca} NO. (~OLOR, TURgI01~, ETC.) - ~ ~LUTIO>I J pH 4.01 J t 7.0 I pH 10.0 I __ , ' 4' - 0.6523 ga:ior...l~near Foot S.A~.IPLEO ;,T:~J~''~' 0 Fi'. FIX.AL D--PTH TO VIATER ~-], ~ FT. 3 CASI,';G V.DLU:'tSS': '~ ,~.1~ GALS. I ' ' - E2~-R--E-M E DiATTO-~,--~. . WATER QUALITY SAb)IPLING RECORD .~ WELL DEVELOPMENT DATA Grc, undwa,,r Scientists.: Envir.~nmen~al Consuhan',s AN O 53C0 Waodmere Dr., Su[:e 105 B~ke~S~eld, CA g3313 ...... ....................... S~MPLE ID OR WELL NO.: ~-~ DEPTH TO WATER: qD.~ PROJECT NO.: TOTAL DEPTH OF WELL: ~_,~ . . ' .... REMARKS ..... PURGE C~ARA~TERISTICS TE}.IP pH SEC SAMPLE-' TIME' INTAKE RATE CUM. VOL ~','ELL VOL (?)' (U~;ITS) (~tmhos/ CONTROL DEPTH' (GPM) (GAL) PUMPEO cra) NO. (COLOR, TURSIDi~ ETC.) . ~ATIO~I / STANDARDIZED ~.~ V/~tl Capa:;b': 2' - 0.1532 ga!loP, linear J pH ~,0i J · 4' - 0.6523 gmt~or,'l~near loot ~SOLUTION , . , I I I I 1 ~E>:T REAO:>;3 'J I I VDLU;,'.ES = ~,~'~ GALS. SA}.IPLEO AT: ~ jO ~. FIX,AL DEPTH TO VIATER: ~'~ FT. 3 CASING ~ ~ I " · WATER QUALITY SAMPLh'qG RECORD Ort, u'nd',','at~r Scientisls: Environmental Consul~an',s AND V'IELL DEVELOPMENT DATA 53co W¢odmere Or., Sui',e 105 Bakarsf!e d, CA 933~3 .... . ................ S&MPLE ID O'R WELL NO.: ~,~ ~5 ';'~ DEPTH TO WATER: ~F3,03 PROJECT NO.: TOTAL DEPTH OF WELL'._ ~"1~:%¢ · CASING VOLUME: ¢~,,-'~ . gaf:oas DATE:_ .,11-'li-0.'% ' -- SAMPLEQ B'r':~ *' ¢¢6e,~ METHOD OF pURGING~ ¢=~ &4CE::~~ · ', ETC.) TI.ME I,',,ITAKE RATE CUM. VOL WELL VOL (F=') (UNITS) (.,.tmho$/ CONTROL DEPTH (GPM) (GAL) PU,MPEO Cra) NO. (COLOR. TURSIDIT¥, ..'1,'I iH CALIBR~IO¢~ ~SfANDAROIZEO V,'~I Capa::b': 2' - 0.1632 ga[Ior~lir, ear fco~ ~OLUTION I pH 4.01 ~ 7.0 ] pH 10.0 ' 4' 0.8528 ga:',op~'f]a¢ar Dot. ..... ' ;- ' '~: ~} SfANDAROIZATION SPECIFIC ELEC¢~AL C~NOUCTANCE · CALI~.RATION S.AMPLEOAT: ~.O ~. Fit;AL DEPTH TO WATER: ~'~ FT. 3 CASINGVSLUt.:ES~ ~*,~ GALS. ~'~,/l EDIA"Ti'OTN, LLtS WATER QUALITY SAMPLING RECORD ' ., '= Sci-:,.ntis~s: Envir2nmental Consukar, ts AND WELL DEVELOPMENT DATA Grr, und,~a.-r 5%0 V,'~odm-~r-~ Dr., Su!~e 10.5 Bak-~rs~!=-;d, CA 93313 ............. SAMPLE ID OR WELL NO.: ~¢1,~,~"' ~' ~ DEPTH TO WATER: ~3 :"] L~- - TOTAL DEPTH OF WELL: 5¢&,o ~FOJECT i'.IO.: , ~ -. _ .~(~- WELL DIAME'I'ERi :ROJECT N.,~,I~-. lvU~. ~' · _ DATE: . li. it_O,~, CASING VOLUME: i,'~$' Daf:OhS SAMPLED BY: DA~ 4 ~d.,Si¢'~- METHOD OF PURGING: .¢l~:_.~i~L~ ~N · ' ' '"-:-'- PURGE CHARACTERISTICS TE;JP pH SEC SAMPLE RE,MAP, KS TIME I,'qTAKE RATE CUM. VOL WELL VOL (F:) (UNITS) (:.~mhosl CONTROL DEPTH (GPM) (GAL) pU,MPEO cra) NO. (COLOR, TURSI,D~TY, ETC.) I~ S ~ -0- Og.z~ 7,a~ ,os' c~o~,o~ -. ~ _ ~.aO,, .I ~R SOLUTIO,H I pH 4.01 t I 7.0 pH 1,3.0 I , 4' · 0.6~2o ga.,or,,'.,,~a, I0~. . ' ~ I 8'-1.4~ZS ...... =,'- RE ' O',"G ...... . C,d~.;;T,O,, S,*~,~**O'Z*T~O~.~ ,~Lb~~' 25U' I 74 I 718 I .1~13 6858 } ~;C ELE~A L C'~ OUCTA"CE I I ' ~~',TR~.~o~>:a I ~ I I' ~~ ~ s.~>.~p~o ;,*: q~,O g. Fix,< OS~m*O W.~*SS: ~g :~ ~ F~' ~ c.~s~x~ vO:U:.'.SS= ~O~ _~.~LS. I ~;DTES: !' I WATER QUALITY SAMPLING RECORD Or~undwa',er Scientists: Envlr,anmental ConsuI'~an',s AND V, ~LL DEVELOPMENT DATA SAMPLE ID OR WELL NO.: ~-' II DEPTHTO WATER: ~ ,. ' TOTAL DEPTH OF WELL: PROJECT NO.: . -- -- OJECT NAME:~~¢ WELL DIAMETER: CASING VOLUME: DATE:~ '~i~lt-~ hlE~HOD OF PURGING: ' '' "" RACTERISTIC~ - 'TEMP- pH SEC SAMPLE . REMARKS TI.ME ~ RAT~ CD,M. VO'[- ~,,'~LL VOL (F~) (UNITS) (~mhos/ CONTROL' OEPTH (GPM) _. . (GAL) pUMPED~ cra) NO. ~COLOR. TURBIDLY, ETC.) ION / STA,'qOARDIZEO V/e!I Capa:;[)': '2' - 0.1632 ga!lor, linec-r f. I 7.0 · 4' - 0.6525 ga:lor~'linear foot ITIO>I I 6'- 1.4~$~ ga:lo~ r' -.---------'-- a~ '.o~;s I I I · - - ' ......... ' STANO ~TIOa ' ;~~ ~ I 718 I 1413 l 6888 t 5a~4~ , , ,=-_ GALS. ~. FP:AL DEPTH TO ?lATER: FT. 3 CASING N 3LU .... SAMPLED AT;. I EDI/ TI--O--N, LL..C* WATER QUALITY SAMPLING RECORD Orc, und',¢ater Sciendsls: En,/ir.anmen~al Cansur:-,'~',s I AND WELL DEVELOPMENT DATA SAMPLE ID OR WELL'NO.: i',A,t¢- trt ¢-~ DEPTH TO WATER': j.~. [~ ~- fi · , TOTAL DEPTH OF WELL.'_ ~¢'~ .2.~ · f: =p, OJECT NAME: Ik/~l~R%'~ WELL D,~,M~_TER: OASING VOLUME: '"'¢ ~ ~ ga!:ons SAMPLED BY:_ '~ ~ ~~ ~ METHOD OF PURGING: '': ' ~CHARACTERISTICS TEMP' pH SEC SAMPLE-' RE,MAR:ES TIME ~NTAKE RA~--CUM. VOL I WELL VOL (?) (U~;ITS) (~tmhos/ CONTROL OEPTH (GPM)~ (GAL) pUMPEO cra) NO. (~OLOR, TURSIDI~. ETC.) ~ I -- SAMPLE0 AT:~'~O . ~' F[::AL DEPTH TO WATERz ~ '~ FT. 3 CASI>;G VDLU:.'.ES~ GALS. , I · I WATER QUALITY SAMPLING RECORD Gr,~und"/a ar Sc~ntis{$: Envir2nmen~al Con~ut',a.~s . AND V/ELL DEVELOPMENT DATA 5300 V/oD~m~re Or., Su[',e 105 Bakers~!e;d~ 9~ ............ SAMPLE lO OR WELL No.: ~¢ i~' ~ DEPTH TO WATER: ~,~:~ , ' ' ~ -TOTAL DEPTH OF WELL:- ~q pROjEcT NO.: .~ , · WELL DIAMETER: OJECT NAME: ~. DATE: ~!~ ~t~O3 CASINGVOLUME:~ 3~'~~ a~:o~,s .... ' ......... ;TERISTICS TEMP pH SEC .. SAMPLE ' RE,MARKS RATE VOL (F:) (UNITS) (:.~mho s/ CONTROL TIME ~EPTH PUMPED em} - NO. (~OLOR, TURShD[~, ETC.) I t DAROIZEO , RATIO;I / STAN "~ ~ "~'" ~SOLUTION I P'L'I4'Oj I l 17.0 I pH 10.0 !:;$TR'j;,t=,'iT R-': '.Oh":'G J I I I ' '--~'~ ...... ~,ZATIO,', ~[LCAL CO,'~r'JUCTA'HCE ' CALI=.-~Atlu,~ ~ ...... .,,~_5Z_5~~ 7-' I 7~a I 14~3_1 6a-3a i ~.~__.: '"', u' '=$- ¢i ,RG O.~,LS. SA.M.=LEOA:: ~.,b,.~ FF. FI::ALDE?THTOWATER:---~'3'~3 · FT. 3CASh~:G'''' ......... '., . :., .,,. . - .. · AND WELL DEVELOPMENT DATA CASING VOLUME: ~,~ .... REMARKS .... ' .......... "' RISTIC~ TEMP 'pH ~' SEC SAMPLE .I ' (?) (UNITS) (~mhos/ :' CONTROL TIME PUMPED cm) NO. I (COLOR, TURSIDi~z ETC.~ ~ATiON / ~ZE? · · ~ ",','e . ~on¢inear Ioc~ . T~,,'N~'F' ' , I t "STR'J' ~' t R" O.,,J . ', ~ ~ ° ~4i / STAN DAROI.ATIO, I ~ELECTRILCAL CO;~~LICTA;ICE :L'A"-'-"~"!~4' ' I 718 I 1413 I 68'38 . 5.%~43 I ____-------- !' ~,,.-,:,: ..... :. ~ ~~, -, ....... __ , - , ~~,oI>:3 I ~ I I I FT. ,3 C.~,~h SA.MPLEO/,T ..._.___~_'~.,O .- FT. FI:;AL DEPTH TO WATER: ~'~ -60 . _. 2 REM D ATI N, LL.C WATER QUALITY SAMPLh'qG RECORD Gtc, und','za'.er Sci-~ndSts: Envlroamen~al Consu!:anh~ AND WELL D~'V~LO~ , Ac DATA 5300 ~','codmere Or., SuRe 105 BakersEerd, CA 93313 .................... ;AMPLE ID OR WELL NO.: ~--l~ DEPTH ~O VIATER~, ~,'~l pROJECT NO.:. TOTAL DEPTH OF WELL: ~G ~O PROJECT [,I.&ME:__~ . ¢¢~J% WELL DIAMETER: DATE: I i- I I - ~ ;~ CASING VOLUME: i* '~ ~ ga!:ons TIME I,'ITAKE RATE CUM. VOL ~ WELL VOL (?) (UNITS) (:.tmhos/ CONTROt. DEPTH (GPM) _ (GAL) PUMPED cra) NO. (COLOR. TURSID~, ETC.) J~pH ~At iBR~TION / STANDAROIZEO ~,','.*!I Ca?:l:;b': 2'- 0.1832 ga!lo;~iinear fcc/ j-SP-~CI.--IC ELECTRILCAL CO,'$DUCTA,'q~,m ' CALI--~RATIOiq / STA,"IDAROIZATIO,"i S.ALIPLEOAT: q,~,~ FT. FI:i.'kLD=PTHTOW'~'TF-R: 0~'1'~'~ FT. 3CASh'qGVgLU:.I=S= '..~,~G.ALS. WATER QUALITY SAMPLING RECORD . Orc. undwa',er Sci~ntist-~: Environmental Consuftan',s AND V, ~LL DEvELo?MENT DATA 53C0 ',,';codmere Or., Suite 105 Ba;.,:ers ,e,d, CA 93313 ............... S~,MPLE ID OR WELL NO.~_~'¢'- t ~ :D DEPTH TO WATER[ , TOTAL DEPTH OF ~/~LL~ :IOJECT I{IO.: .,... WELL DIAMETER: .... · OJECT NAME: ~./~..=_~--- CASING VOLUME: __ __ SAMPLED BY:_ ~',',)~.-,~.,~ ¢c~&~-.~ METHOD OF PURGING:__ ...... .~ .... ' ' '- ' REMARKS .... ' ..... ~ '~'HARACTERISTICS TEMPI pH SEC SAMPLE . TIME RATE-- (F~) (UNITS) (.,.umhos/ : CONTROL DEPTH PUMPED cra) NO. ~(COLOR. TURSI,DITY, ETC.) · ' .......... .... . :, ,., -:,.,' 2' - 0.1832 ga!lo:"¢inec, r ~SOLUTIO,H pH ____ 4~ 0.6523 ga!lo~'l:near 6' 1. :¢Sg:,l~' 'r_, ,"~'P r' · ._.~._:.__~__.__.-----'~r ~~,Oh',:G FT. 3 C.:.,Sh"~G VDLUh:--S%.---------~GALS' SA.tIPLEO AT: ~ FT. FI:;AL DEPTH TO WATER: ----- I ~ . ! - EEC--R-"E~ EDIA'TI-O~, LLi3 ' WATER QUALITY SAMPLING RECORD Orc, undwa',er Sciantisls: En,.4r.onmenta[ ConsuRa.'~'.s AN O V/ELL D EVELOP;/I E NT DATA 53C0 V;codmere Or., Sui:-*'. 105 Bak-.,"s,'ie d CA 93313 ................ ' , ~--r-..--:-:'. -'=- ._:._ ......... ~ .-,, ,¢, ~ DEPT:-I TO WATER: 6.';¢, '~.2,.. ' ;AMPLE ID O,:R wELL i"iO,:_l',4. -15" ' TOTAL DEPTH OF.WELL: -/~,.iff '1 pROJECT I'. O.: · pROJECT NAME: M.~ - ~'A~1'"' WELL DIAMETER:__ " CASING VOLUME: i,'~ ' gaf:0ns DATE: il- I i'- SAMPLEO BY: '~ r4 ¢-¢8¢~ METHOD OF PURGING: l~iP- Lt~'~"'- .... Ti.~..I~ INTAKE, RATE, CUM. VOL WE. LL VOL (F:') (UNITS) (:~.,'r. hos, CONTROL BEPTH (GPM) (GAL) PUMPED cra) NO.' ~.J(COLO,:R, TU,-..S,DIT'Y, ETC.) I · ~iO~'l / STANDARDIZED · ;UFFERSOLUTIO,"I I pH4.01 I. 17.0 pill,2.0 I'"7~ W.~!iCa.:,¢:;'b,: 2'- 0.1532 cja!tor,,line.e-rlcct " - ,i' 0.6528 ga:~or~'lM~ar '=,,"Ef'P r' ) : -- I 6'- 1.4~$3 ~ .o,, ,.., I I !:;::3TR'J:JE,'iT RE ' '"~ s,---c,,--:c"[,-~c'C~"~c'~'u ed:~oUCT~,,''c=:' a,,.,~T,O~fi~ ~,~-C-C-~~~ ' i 74 I ?~a I ~4~~~ ~m I I I "I I ~l - ------- - ^ I "- I I I I ~i"- ~,,:sm'J:.~>~r SA,MPLEO ;,T: ~,.(~ O FT. FI:;AL DEPTH TO WATER: (..~'] ,ql FT. 3 CASh"iG VDLU:.'.=S_-- ,r~,,,~____~ _GALS. I I ' I 'I ~71EDIATIO-"~ LL'i3 '1 WATER QUALITY SAMPLING RECORD Groundwater Scientists: En,Ar.anmental Consuf:ar,',s AND WELL DEVELOP,M ENT DATA 53C0 V/oodmere Or.. Suff, e 105 Bak'w$¢!e d CA 93313 ............... -SAMPLE lC) OR WELL NO.: ~,~.g>J (¢.' : DEPTH TO WATER: 'IL~,~ .- TOTAL DEPTH OF WELL: '"/C[..0.~._ =ROJECT NO.: bROgECT NAME: . .. METHOD OF pURGING: :~: ' PU~GEC~ARACTERISTICS 'IEMP ~ pH SEC SAMPLE-' · REMARKS TIME INTAKE RATE ~UM, VOL WELL VOL (?) (UNITS) (:.~mhosl CONTROL DEPTH (GPM) (GAL) PUMPED cra) NO. (~OLOR, TURBIDLY, ETC.) I - CALIBRATION / ~FER SOLUTION I pH 4.0~ J ~ I 7.0 j pH 10.0 I ~ . 4' - 0.6523 ga'.~O¢''flnCar foot ELEC?AILC~L 74 F~.t.dO S%~~ 25 C' I I 71J ~' ,~=, ~ I I I "'1 I SAMPLEO),T: I~q¢O ...~. FIt;ALDEPTHTOV/ATER: qq,~¢ · FT. 3 CASINGVDLUL":~~G'~' · · E=C-'R--E~.M EDIATI-O~ WATER QUALITY SAMPLING RECORD ~] Ot3und',va',er Sci.~ntists: Envir.anmen~al Cons~t~an',s AND VIEL~ DEVELOP¢4ENT DATA· SA~,tPLE ID OR WELL NO.: i'7 b DEPTH TO WATER: ~0~ ~ ' TOTAL DEPTH OF WELL: ~ I ,~ f; :ROJECT NO.: ~ROJECT NAME: ~ C[~'F WELL D:AhIETER: ~* DATE: t {~ t I,-8~ CASING VOLU¢4E: .' q~f:ons . SAMPLED BY: .~ ~1~0~2~ METHOD.OF PURGING: T~.~ ~,.~.x~I ~A~ , cu,~.vo~l~'¢~.~vo" (?) (u~.~s~ (?ho./ .CO,':T:~O~ DEPTH (GPM) (GAt.) pUMPED cra) : ' NO. (COLQR TURS;DI~, ETC.) , 4' · 0.6525 .... ' ....... ~) STANDARDIZATION SPECIFIC ELECCRI~AL O S.~MPLEO/,r: ~. FIr:AL DEPTH TO ~'/ATER: FT. 3 CASING i' · I WATER QUALITY SAMPLING RECORD -~1 Gr~,und',','a'.ar Scier, b.sts: En,..iraamealal Coa.suka:','..s . AND WELL DEVELOPMENT DATA 5300 V;oodmete Dr., SuP, e 105 B.',k~,'s,'ie;d, CA 93313 ................ SAMPLE ID OR WELL NO.: l'di'-~")" i ""ir & ' DEPTH TO WATER: ~7 TOTAL DEPTH OF WELL: pROJECT NO.: PROJECT NAME: _~l~O~s_?A'5~' WELL D,r, al=TER: CASING VOLUib!E: ~ ,~'q ga!:o,% ' DATE:_ SAMPLED BY: 0R~ d ~~ METHOD OF PURGING:_ ¢~ ¢_.. L,, ¢7' -- i ' .... RGE CHA,~A~TERISTICS TF_.,U P pH SEC S~,,12L TI.US RATE (F:') (UNITS) (:.~mho$/ CONTROL O=_PTH pUMPED cra) - I";O. ' (~.__COLOR, TURSI'DITY, ETC.) I~S"q-' . · q f,,.~..,¢ /,, :'z'i ..Z_t 2H CALIBRATIO, I / . '~U:FER SOLUTIO~I I pH 4.01 I ~'f7.0 I¢H ~;~.0 I . 4'- 0.652S ga:;or,'~in~¢ SAMPLEOAT:~ ~3,O ~. FI::ALO~PTHTOWATER: ~'~ FT. 3CASINGV3LU%tES~ tO,~3 GALS. · ------E~~vl EDIAT~ WATER QUALITY SAMPLING RECORD Or~,undv;ater Sci~nti's~s: Env;tz, nmenta ConsuP, a.'~',s .AND WELL DEVELO?MENT DATA 5300 Wcod,mere Or., SuP, e 105 @akers~ie;d. CA 93313 ............................... SAM?LE lO OR WELL NO.: ~J" i ~ DE.PT~ TO WATER: I1~,¢.~ pROJECT hl0.: TOTAL DEPTH OF WELL: PROJECT HAME:_ .. ~. ~ WELL DIAMETER: DATE: i t-- I I- 0'~ CASINO VOLUMe: , ].~ SA,,,IPL~OSY: ~ ~ ~ mETHOOOFPURG~4O: " TI.ME INTAKE RATE CUM. VOL ~ELL VOL (?) (U,NITS) (:.~mhos/ CONTROL DEPTH (Gp,(,l~ (GAL) PUMPED cra) - NO. .(C~LOR, TURSIDi~, ETC.) I' ~,UFFERSO:.UTION I pH4.01 I. 7.0 I pH 10.0 I __ . ' 4'. 0.6$2.2, ga'.lor,,l[neari-:°t :~=_ -,,.~ ELECTHiLCALCO,'9'DUCYANCE'~TION/STANDAROiZATIO;I SA.MPLEO/,I': jl~'0 FT. FI::.ALOEPTHTO;'L-NTER: I~lb~'~'~ FT. 3CASh~;GVDLU:'''--S= ~,,~O GALS. I. · '1 Project Number 1801BK05 ' ,- Janua~_ 30. 2004 ! APPENDIX B Fourth Quarter 2003 Groundwater Analytical Laboratory Report Appendix " "E2C Remediation , ,. " .., Chain of Custody Form Clienl Name: EzC Remedial on, LLC 66I .831.6906 Fax 661..831.623,1 ~ Analysis Requcsled -' -- Projccl Name: ~. Clien[ Address: 5300 Woodmere Dr., Suile 105. Bakers[icld CA 93313 ~ Aqueous Sample Dale Sample Time Sample Descriplion and Conlainer Type i ~ 'Acidified " Cornmenls ' Relinquished By: ' .Date: I~-'IZ~O~ Relinquished By: Date: ~ Chain of Custody Form ClieniNan'ie: EzC Rcmcdialion LLC 661.831.6906 fax 66i.831.6234 Analysis Requcslcd ClionI. Addross: 5300 Woodmcro Dr., Suilo 105, Bakersfield, CA 93313 ~, Aqueous Sample Dale Sanlple'Timo ' Sample Description and COllJaJI1CF Typo ~ Acidified CO~RFFIOR[$. .. Turnaround Time Requested: . 24 Hour ' 48 Hour _ 5-Day ~ Standard Relinquished By . Date: I ~-IL-03 Relinquished By: [Received By: - Date: f, If-)/d-'J_Received ~y: Date: . Dale: Halcyon Laboratories, Inc. Laboratory Report '. Certification'Ct 1920 . , CL~NT: EzC Remediation Project Name: M'r. Fast 5300 Woodmere Ave Suite 105 Bakersfield CA 93313 Matrix: Aqueous Smnpted by.': Dan Anderson & Ruben Dorame TESTS: TPH Gas by EPA 8015M g Analysis: TPH ] /22/2003 Date of Report: 12/3/2003 Units: u~l Smnple #: 6609 6622 6610 6620 6611 6612 66J3 Date Sampled: 11/11/2003 11/11/2003 11/11/2(103 11/11/2003 11/11/2003 11/11/2003 ll/ll/2003iDLug/! Sample Description: Travel Blank MW-I .~BV-2 MW-3 ~¢&'-4 MW-5 MW-6 . TPH Gasoline ' ND 2670 ND ND ND ND ND 50.0 Surrogate Recovery. % 82 80 85 85 82 85 88 Sample #: 6621 6616 6627 6619 ' 6617 6614 .6615 Date Sampled:' I/0/1900 1/0/1900 1/0/1900 11/11/2003 11111~2003 11/11/2003 11/11/2003 DLug/! Sample Description: ,x~v-9 Mw-J0 MW-J3 I~V-~4 MX.X~-] 5.__S MW47S TPH Gasoline ND ND 4206 ' ND ND ND ND 50.0 Surrogate RecoveO' % 85 89 86 84 85 88 84 Smnple #: 6628 Date Sampled: 1/0/1900 DL ug/l Sample Description: MW-20 iTpH Gasoline 4234 ...... 50.0 Surrogate Recovery % 86 r i DL = Detection Linfit Q~ ~ ND - Non-Detect at given DL . NA - Result not available Analyst; Alexander Candia 'l Halcyon Laboratories, Inc. Laboratory Report Certification # 1920 CL~N'I': EzC Remediation Project Name: Mr. Fast 530(I Woodmere Ave Suite 105 Bakersfield CA 93313 Matrix: Aqueous ' Sampled by: Dan/u~derson & Ruben Dorame TESTS: TPH Gas bv EPA 8015M TPH g Analysis: 11./22/2003 · Date of Report: 12/3/2003 U~its: ug/1 Smnple #: . 6624 6623 6625 6618 DL Date Sampled: 11/11/2003 11/11/2003 11/11/2003 11/11/2003 : Ug/1 Sample Description: MW-7 MW-8 ~V- 12 ~.~,V- 16 . TPH Gasoline 10.700 31.050 18.(150 530 t 250.0 Surrogate Recovery % 84 80 84 88 iS'mpi #: ' 6626 DL ug/l Date Sampled: 1/0/1900 , Sample Descr/ption: MW4 TPH Gasoline 94,000 2000.0 Surrogate Recovery % 85 I ..... ~- DL ug/l Sample #: ~Date Sampled: Smnple Description: · · Surrogate Recovery % ND - Non-Detec{ at given DL NA - Result not available ' Analyst: Alexan~'dE~Candia .HalcyOn Laboratories, Inc. EPA 8260B Laboratory Report Water Sample Results in ug/L Certification # 1920 CLIENT: E2C Remediation 5300 Woodmere Drive, Suite 105 Bakersfield, CA 93313 · Project ID ' Mr Fast Date: 11/14/2003 · Analysis Report Date: 11/24/2003 Sample ID ' 6609 Travel Blank Analyte Result Method RL Units 5 Oxygenates t-Butanol CTBA) Ted-ButYl Alcohol ND 2.5 ug/L Methy~ Tert-Buty~ Ether (MTBE) ND 0.5 ug/L Diisopropyl Ether (DIPE) ND 0.5 ug/L Ethyl Ted-Butyl Ether (ETBE) ND 0.5 ug/L Ted-Amyl Methyl Ether (TAME) ND ,0.5 ug/L BTEX Components Benzene ND · 0.5 ug/L Toluene ND 0.5 ug/L Ethylbenzene ND 0.5 ug/L m & p Xylenes ND 0.5 ug/L o Xylenes ND 0.5 ug/L Internal Standards Results % Recovery · Benzene, fluoro 50.0 100% Benzene-dS, chloro- 50.0 100% 1,4-Dichlorobenzene-d4 50.0 100% Surrogate Standards Methane,' dibromofluoro- 53.2 106% 1,2-Dichloroethane-d4 47.4. 95% Toluene-d8 50.3 101% p-Bromofluorobenzene (BFB) 47.4 95% HalCyon Laboratories, inc. EPA 8260B Laboratory RepOrt Water Sample Results in ug/L " certification Ct 1920 CLIENT: . E2C Remediation ' ' 5300 Woodmere Drive, Suite 105 Bakersfield, CA 93313 Project ID: Mr Fast Analysis Date: 11/14/2003 .. Report Date: 11/24/2003 · Sample ID 6622 MFW-1 . Analyte Result Method RL Units I 5 Oxygenates t-Butanol (TBA) Tert-Butyl AlcOhol 6 2.5 'ug/L I Methyl Tert-Butyl Ether (MTBE) ND 0..4 ug/L Diisopropyl Ether (DIPE) ND 0.5 ug/L Ethyl Ted-Butyl Ether (ETBE) ]',TI) 0.5 ug/g I Tert-Amyl Methyl Ether (TAME) ND 0.5 ug/g BTEX Components I Benzene ND 0.5 ug/L Toluene ND 0.5 ug/L i Ethylbenzene 140 0.5 ug/L m & p Xylenes 90 0.5 ug/L o Xxfienes 40 0.5 ug/L Internal Standards Results % Recovery Benzene, fluoro 50.0 100% Benzene-d5, chloro- 50.0 . 100% 1,4-Dichlo robenzene-d4 50.0 100% Surrogate Standards Methane, dibromofluoro- 53.3 107% 1,2-Dichloroethane-d4 47.2 94% Toluene-d8 49.0 98% p-Bromofluorobenzene (BFB) 48.4 97% Halcyon Laboratories, Inc. EPA 8260B Laboratory .Report Water Sample Results in ug/L certification # 1920 CLIZNT: E2C Remediation 5300 h¥oodmere Drive, Suite' 105 Bakersfield,.CA 93313 Project ID ' Mr Fast Analysis Date: 11/14/2003 .. " Report Date · 11/24/2003 . · 'Sample ID · 6610 MW-2 Analyte Result Method RL units 5 Oxygenates t-Butanol (TBA) Ted-Butyl Alcohol ND 2.5 ug/L Methyl Tert-Butyl Ether (MTBE) ND 0.5 ug/L Diisopropyl Ether (DIPE) ND 0.5 ug/L Ethyl Ted-Butyl Ether (ETBE) ND -- 0.5 ug/L Ted-Amyl Methyl Ether (TAME) ND 0.5 ug/L BTEx Components Benzene ND 0.5 ug/L Toluene ND 0.5 ugLL Ethylbenzene ND' 0.5 ug/L m & p Xylenes ND 0.5 ug/L o Xylenes ND 0.5 ugfL I Internal Standards Results % Recovery · Benzene, fluoro 50.0 100% I Benzene-d5, chloro- 50.0 100% 1,4-Dichiorobenzene-'d4 50.0 100% I Surrogate Standards Methane, dibromofluoro- 53.3 107% I 1,2-Dichloroethane-d4 48.6 97%' Toluene-d8 50.4 101% )-Bromofluorobenzene (BFB) 47.9 96% ~ Halcyon Laboratories, Inc. I EPA 826013 Laboratory Report Water Sample Results in ug/k Certification # 1920 'l CLIENT: E2C Remed~ation 5300 Woodmere Drive, Suite 105 i I Bakersfield, CA 93313 I Project ID · Mr Fast Analysis Date: 11/14/2003 ~ .. Report Date ' 11/24/2003 I Sample ID 6620 MW-$ Analyte Result Method RL Units $ Oxygenates t-Butanol CI'BA) Ted-Butyl Alcohol ND 2.5 ug/L Methyl Ted-Butyl Ether (MTBE) ND 0.5 ug/L Diisopropyl Ether (DIPE) ND 0.5 ug/L Ethyl Ted-Butyl Ether (ETBE) ND 0.5 ug/L Tert-Amyl Methyl Ether (TAME) ND 0.5 ug/L BTEX Components Benzene ND 0.5 ug/L Toluene ND 0.5 ug/L Ethylbenzene ND 0.5 ug/L m & p Xylenes ND 0.5 ug/L o Xylenes ND 0.5 ug/L Internal Standards Results % Recovery Benzene, fluoro 50.0 100% Benzene-dS, chloro- 50.0 100% 1,4-Dichlorobenzene-d4. 50.0 100% Surrogate Standards Methane, dibromofluoro~ 55.5 111% 1,2-Dichloroethane-d4 48.4 97% Toluene-d8 49.6 99% p-Bromofluorobenzene (BFB) 46.8 94% · ~ Halcyon Laboratories, Inc. I EPA 8260B Laboratory Report Water Sample Results in uglL Certification # 1920 I CLIENT: E2C Remediation' 5300 Woodmere Drive, Suite 105 Bakersfield, CA 93313 Project ID - Mr Fast Analysis Date: 11/14/2003 Report Date ' 11/24/2003 Sample ID ' 6611 MW-4 I Analyto Result Method RL Units 5 Oxygenates t-Butanol (TBA) Ted-Butyl Alcohol ND 2.5 . ug/L I Methyl Ted-Butyl Ether (MTBE) ND 0.5 ug/L Diisopropyl Ether (DIPE) ND 0.5 ug/L Ethyl Ted-Butyl Ether (ETBE) ND 0.5 uo, dT, I Tert-Amyl Methyl Etller (TAME) ND 0.5 ug~ BTEX Components I Benzene ND 0.5 ug/L Toluene ND 0.5 ug/L I ' Ethylbenzene ND 0.5 m & p Xylenes NE) 0.5 o Xylenes ND 0.5 ug/L ! Internal Standards Results % Recovery Benzene, fluoro 50.0 100% ' Benzene-dS, chloro- 50.0 100% 1,4-Dichlorobenzene-d4 50.0 i00% Surrogate Standards Methane, dibromofluoro- 52.3 105% 1,2-Dichloroethane-d4 47.7 95% Toluene-d8 50.0 100% o-Bromofluorobenz~ne (BFB) 47.7 95% _ ' Halcyon Laboratories, inc. 'EPA 8260B Laboratory RepOrt Water Sample Results in ug/E Certification # 1920 . CLIENT: · E2C Remediation 5300 Woodmere Drive, Suite 105 Bakersfield, CA 93313 Project 1D - Mr Fast ' Analysis Date: 11/14/2003 .' Report Date · . 11/24/2003 Sample ID - 6313 MW-6 '. Analyte Result ·Method RL Units 5 Oxygenates t-Butanol (TBA) Ted-Butyl Alcohol ' ND 2.5 ug/L Methyl Tert-Butyl. Ethe~ (MTBE) ND 0.5 ug/L Diisopropyl Ether (DIPE) ND 0.5 ug/L Ethyl Ted-Butyl Ether (ETBE) ND 0.5 ug/L Ted-Amyt Methyl Ether (TAME) ND 0.5. ug/L' BTEX Components Benzene .. ND 0.5 ug/L Toluene ND 0.5 ug/L Ethylbenzene ND 0.5 ug/L m & p Xylenes ND' 0.5 ug/L o Xylenes ND 0.5 ug/L Internal Standards Results '% Recovery Benzene, fluoro 50.0 100% Benzene-d5, chloro- 50.0 100% 1,4-Dichlorobenzene-d4 50.0. 100% Surrogate Standards Methane, dibromofluoro- 52.3 105% 1,2-Dichloroethane-d4 48.5 97% Toluene-d8 51.0 102% p-B~omofluorobenzene (BFB) 46.7 93% · Halcyon Laboratories, Inc. EPA 8260B Laboratory RepOrt Water Sample Results in ug/L I C~rtification # 1920 CLIENT: E2C Remediation 5300 Woodmere Drive, Suite 105 I Bakersfield, CA 93313 I P rojeCt ID · I~Ir Fast Analysis Date: 11/1412003 : .' Report Date ' 11/24/2003 I Sample ID ' 6624 MW-7 . Analyte ReSult Method RL Units 5 Oxygenates' t-Butanol (TBA) Ted-Butyl Alcohol ND .2.5 ug/L Methyl Ted-Butyl Ether (MTBE) ND 0.5 ug/L Diisopropyl Ether (DIPE) ND 0.5 ug/L Ethyl Tert-Butyl Ether (ETBE) ND 0.5 ug/L Ted-Amyl Methyl Ether (TAME) ND 0.5 ug/L BTEX Components Benzene '. I',rD 0.5 ug/L Toluene 1.300 0.5 ug/L Ethylbenzene 740 · 0.5 ug/L m & p Xylenes 2,700 0.5 ug/L o Xylenes 1,380 0.5 ug/L Internal Standards Results % Recovery Benzene, fiuoro 50.0 100% BenZene-d5, chloro- 50.0 100% 1,4-Dichlorobenzene-d4 50.0 100% Surrogate Standards Methane, dibromofluoro~ 50.7 101% 1,2-Dichloroethane-d4 47.8 96% .- i Toluene-d8 50.5 101% . ~ a-Bromofluorobenzene (BFB) 48.1 96% Halcyon Laboratories, inc, I EPA 82608 Laboratory RepOrt Water SamCe Res.~ts in I · Certification# 1920 ' I CLIENT: EzC Remediation 5300 Woodmere Drive, Suite 105 Bakersfield~CA 93313 ' I Project !D · Mr Fast i . Analysis Date: 11/14/200'3 : Report Date ' 11/24/2003 Sample ID ' 6623 MW-8 I i Analyte ~ Result Method RL Units .5 Oxygenates I' t-Butanol (TBA) Tert-Butyl Alcohol ND 2.5 ug/L Methyl Tert-Butyl Ether (MTBE) ND 0.5 ug/L Diisopropyl Ether (DiPE) ND 0.5 ug/L - · '1 Ethyl Ted-Butyl Ether (ETBE) ND 0.5 ug/L -Tert-Amyl Methyl Ether (TAME) ND 0.5 ug/L ":i BTEX Components Benzene. ND 0.5 ug/L I ' Toluene 8,200 0.5 ug/L Ethylbenzene 1,380 0.5 ug/L m & p Xylenes 4,490 0.5 ug/L I o Xylenes 4,414 0.5 ug/L internal Standards Results % Recovery I Benzene, fluoro 50.0 100% Benzene-dS, chloro- 50.0 100% i 1,4-Dichlorobenzene-d4 50.0 100% Surrogate Standards I Methane, dibromofluoro- 45.5 · ,91% 1,2.Dichloroet ha ne-d4 41.0 82% Toluene-d8 ' 51.0 102% I p-Bromofluorobenzene (BFB) 44.7~ 89% Halcyon Laboratories, Inc. EPA 8260B' Laboratory RepOrt Water Sample Results in ug/L' .. Codification Ct 1920 - ' , CLIENT: E2C Remediation 5300 Woodmere Drive, Suite 105 Bakersfield, CA '93313 Project ID ' Mr Fast Analysis Date: 11Ei4/2003 Report Date · 11/24/2003 Sample ID · 6621 MW-9 Analyte Result Method RL . Units 5 Oxygenates t-Butanol (TBA) Tert~Butyl Alcohol ND .2.5 Methyl Tert-Butyl Ether (MTBE) ' ND 0.5 ug/L Diisopropyl Ether (DIPE) ND 0.5 ug/L Ethyl' Ted-Butyl Ether (ETBE) ND '0.5 ug/L Tert-Amyl Methyl Ether (TAME) ND 0.5 uod'I., .BTEX Components Benzene ND 0.5 ug/L Toluene ND 0.5 ug/L Ethylbenzene ND 0.5 ug/L m & p Xylenes ND 0.5 ug/L. 0 X~t~enes ND 0.5 uS/t, I Internal Standards Results % Recovery I Benzene, fluoro 50.0 100% Benzene-dS, chloro- 50.0 100% 1,4-Dichlorobenzene-d4 50.0 100% I - Surrogate Standards I dibromofluoro- 52.3 105% Methane, 1,2-Dichloroethane-d4 49.3 99% .. Toluene-d8 . 50.9 102% I p-Br0mofluorobenzene (BFB) '- 47.1 94% HalCyon. Laboratories, nc.' EPA 8260B LabOratory Report Water Sample ResUlts in ug/g Certification Ct 1920 CLIENT: .E2C Remediation 5300 Woodmere Drive, Suite 105 Bakersfield, CA 93313 Project ID.: IVIr Fast ..Analysis Date: 11/14/2003 Report Date :. 11/24/2003 Sample ID: 6616 MW-10 Analyte Result Method RL 'Units ,5 Oxygenates t~Butanol (TBA) Ted-Butyl'Alcohol ND 2.5. ug/L Methyl Tert-Butyl Ether (MTBE) ND 0.5 ug/L Diisopropyl Ether (DIPE) ND 0.5 ' ug/L Ethyl Ted-Butyl Ether (ETBE) ND 0.5 ug/L Ted-Amy[ Methyl-Ether (TAME) ND 0.5 ug/L BTEX Components Benzene ND 0.5 ug/L Toluene Ethylbenzene ND 0.5 ug/L m & p Xylenes ND 0.5 ug/L o Xylenes' ND 0.5 ! Internal Standards Results % Recovery I Benzene, fluoro 50.0 100% Benzene-d5, chloro- 50.0 · 100% i 1,4-Dichlorobenzene-d4 50.0 100% . Surrogate Standards I Methane, dibromofluor0- 54.4 109% 1,2-Dichloroethane-d4 49.9 100% .Toluene-d8 50.0 100% I p-Bromofluorobenzene (BFB) ' 48.8 . 98%' _ · Halcyon Laboratories, Inc. i ~ EPA 8260B Laboratory Report" WaterSampleResults inug/L ! I Certificatior #. 1920 CLIENT: E2C Remediation 5300 Woodmere Drive, Suite 105 Bakersfield, CA 93313 Project ID: I~r Fast .-: · Analysis Date: 11/14/2003 ' Report Date · 11/24/2003 Sample ID: 6626 MW-11R Analyte Result Method RL Units 5 Oxygenates t-Butanol (TBA) Ted-Butyl Alcohol ND 2.5 ug/L Methyl,,~ert-Butyl Ether (MTBE) ND 0.5 ug/L Diisopr~pyl Ether (DIPE) ND 0.5 ug/L Ethyl Ted-Butyl Ether (ETBE) ND 0.5 ug/L' Tert-Amyl Methyl Ether (TAME) ND 0.5 ug/L BTEX Components Benzene ND 0.5 ug/L Toluene 20,447 0.5 ug/L Ethylbenzene 2,700 0.5 ug/L m & p Xylenes 5,030 0.5 u¢ o Xylenes O. 5 4,450 Internal Standards Results % RecoVery Benzene, fiuoro 50.0 100% Benzene-dS, chloro- 50.0 100% 1,4-Dichlorobenzen e-d4 50.0 100% Surrogate Standards Methane, dibromofluoro- 45.8 92% 1,2-Dichloroethane-d4 41.2 82% Toluene-d8 ' 51.9 104% p-Bromofluor0benzene (BFB) 44.0 88% Halcyon Laboratories, inc. EPA 8260B LaboratOry Report Water Sample Results in Ug/L Certifi(Sation # 1920 CLIENT: E2C Remediation 5300 Woodmere Drive, Suite 105 Bakersfield, CA 9331.3 Project ID ' Mr Vast Analysis Date: 11/14/2003 Report Date · 11/24/2003 Sample ID - 6625 MW-12 Analyte Result Method RL Units $ Oxygenates t-Butanol (TBA) Tert-ButYl Alcohol ND 2.5 ug/L Methyl Tert-Butyl Ether (MTBE) ND 0.5 ug/L Diisopropyl Ether'(DIPE) ND 0.5 ug/L Ethyl Tert-Butyl Ether (ETBE) ND . '0.5 ug/L Tert-Amyl Methyl Ether (TAME)' ND 0.5 ug/L BTEX Components .~; Benzene ND 0.5 ug/L Toluene 800 0.5 ug/L Ethylbenzene 1,760 0'.5 ug/L m & p Xylenes 3,830 0.5 ug/L o Xylenes 2,240 0.5 ug/L Internal Standards Results % Recovery Benzene, fluoro 50.0 ' 100% Benzene-d5, chloro- 50.0 100% 1,4- Dichloro benzene-d4 50.0 100% Surrogate Standards Methane,. dibromofluoro- 48.2 96% 1,2-Dichloroethane-d4 44.9 90% Toluene-d8 50.1 100% >Bromofluorobenzene (BFB) 45.5 91% · Halcyon LaboratOries, Inc. I EPA 826013Laboratory Report Water Sample Results in Ug/L Certification Ct 1920 I -CLIENT: E2C Remediation 5300 Woodmere Drive, Suite 1'05. · Bakersfield, CA 93313 . I Project ID · Mr Fast i Analysis Date: 1t/14/2003 . Report Date · 11/24/2003 Sample ID · 6627 MW-13 · ! Analyte Result Method RL Units 5 Oxygenates I t-Butanol (TBA) Ted-Butyl Alcohol' NTD 2.5 ug/L Methyl Tert-Butyl Ether (MTBE) ND 0.5 ug/L Diisopropyl Ether (DIPE) ND 0.5 ug/L I Ethyl Ted-Butyl (ETBE) ug/L Ether O.5 Tert-Amyl Methyl Ether (TAME) ND I "BTEx Components Benzene ND 0.5 ug/L I Toluene 12 0.5 ug/L Ethylbenzene 37 0.5 ug/L m & p Xylenes 25 0.5 ug/L I o Xylenes 40 0.5 ug/L Internal Standards Results % Recovery I Benzene, fluoro 50.0 100% Benzene:d5, ch oro- 50.0 100% 1,4-Dichlorobenzene-d4 50.0 . 100% I Surrogate Standards I Methane, dibromofluoro- 54.4 109% 1,2-Dichloroethane-d4 48.7 97% Toluene-dY 50.2 ' 100% I p-Bromofluorobenzene (BFB) '47.6 95% Halcyon Laboratories, Inc, ~· EPA 826019. Laboratory Report. " watersamP'ie Results in ug/L , ICt 1920 Certification I CLIENT: EzC Remediation' 5300 Woodmere Drive, Suite 105 I Bakersfield, CA 93313 Project ID: Mr Fast i Analysis Date: 11/14/2003 Report Date · 11/24/2003 "Sample ID: 6619 MW-14 i Analyte Result Method RL Units · 5 Oxygenates I t-Butanol (TBA) Ted-Butyl Alcohol ND 2.5 ug/L Methyl Ted-Butyl Ether (MTBE) ND 0.5 ug/L i Diisopropyl Ether (DIPE) ND 0,5. ug/L Ethyl Tert-Butyl Ether (ETBE) ND 0.5 ug/L Ted-Amyl Methyl Ether (TAME) ND 0.5 ug/L 'il I BTEx Components Benzene ' ND, 0.5 ug/L ' l, ND 0.5 ug/L Toluene Ethylbenzene ND 0.5 ug/L m & p Xylenes ND 0.5 ug/L I o XYlenes ND 0.5 ug/L I Internal standards Results '% Recovery Benzene, fluoro 50.0 100% Benzene-d5, chloro- 50.0 100% 1,4-Dichlorobenzene-d4 50.0 100% Surrogate Standards Methane, dibromofluoro- 56.'4 113% 1,2-Dichloroetha ne-d4 50.7 101% Toluene-d8 . 50.4 101% p-Bromofluorobenzene (BFB) 47.7 95% Halcyon Laboratories, Inc...' . EPA8260B Laboratory Report Water Sample ResUltS in ug/L Certification Ct 1920 CLIENT: E2C-Remediati°n 5300 Wo0dmere Drive,' Suite 105 Bakersfield, CA 93313 Project ID · ~ Mr Fast Analysis Date: 1111412003 Report Date · 11/24/2003 Sample ID · 6617 MW-15S Analyte, Result Method RL Units 5 Oxygenates t-Butanol (TBA) Tert-Butyl Alcohol · ND 2.5 ug/L Methyl Tert-Butyl Ether (MTBE) ND 0.5 ug/L ,. :1 Diisopropyl Ether (DIPE) ND 0.5 · ug/L Ethyl Ted-Butyl Ether (ETBE). ND 0.5 ug/L Tert-Amyl Methyl Ether (TAME) ND 0.3 ug/L BTEX ComPonents Benzene ND 0.5 ug/L Toluene ND 0.5 ug/L Ethylbenzene ND '0.5 ug/L m & p Xylenes ND 0.5 ug/L o X¥1enes ND 0,5 ug/C Internal Standards Results % Recovery Benzene fluoro 50.0 100% Benzene-dS, chloro- 50.0 100% 1,4-Dichlorobenzene-d4 50.0 100%. Surrogate Standards Methane, dibromofluoro-. 55.5 111%. ·. 1,2-Dichloroethane-d4 52.1 104% Toluene-d8 51.2 102% p-Bromofluor0benzene (BFB) 49.2 98% Halcyon Laboratories, Inc. EPA 8260B Laboratory Report Water Sample Results in ug/L Certification # 1920 CLIENT: E2C Remediation 5300 Wood~nere Drive, Suite 105 Bakersfield, CA 93313 . Project ID · Mr Fast ... -'.. Analysis Date: 11/14/2003 Report Date · 11/24/2003 Sample ID · 6618 MW-16 Analyte Result Method RL Units 5 Oxygenates t-Butanol (TBA) Tert-Butyl Alcohol ND 2.5 ug/L Methyl Tert-Butyl Ether (MTBE) ND 0.5 ug/L Diisopropyl Ether (DIPE) · ND 0.5 ug/L Ethyl Tert-Butyl Ether (ETBE) ND 0.5 ug/L Tert-Amyl Methy! Ether (TAME) ND 0.5 ug/L BTEX Components Benzene 46 0.5 u¢:~.~ Toluene N~ 0.5 ug/L Ethylbenzene 32 0.5 ug/L m & p Xylenes 5 0.5. ug/L o X~jlenes 23 0.5 ug/L I Internal Standards Results % Recovery I Benzene, fluoro 50.0 100% Benzene-dS, chloro- 50.0 100% i 1,4-Dichlorobenze ne-d4 50.0 100% Surrogate Standards I Methane, dibromofluoro- 53.9 108% 1.,2-Dichloroethan e-d4 50.8 102% Toluene-d 8 50.6 101% I 93% p-Bromofluorobenzene (BFB) 46.6 .. Halcyon LaboratOries, ~nc. EPA 8260B Laboratory Report Water Sample Results in ug/L Certification Ct 1 92O' CLIENT: E2C Remediation 5300 Woodmere Drive, Suite 105 Bakersfield, CA 93313 Project !rD · Mr Fast :. .' Analysis Date: 11/14/2003 Report Date ' 11/24/2003 Sample ID - 6614 MW-17S Analyte Result Method RL Units 5 Oxygenates t-Butanol (TBA) Tert-Butyl Alcohol ND 2.5 ug/L Methyi Tert-Butyl Ether (MTBE) ND 0.5 ug/L Diisopropyl Ether (DIPE) ND 0.5 uodL J Ethyl TeA-Butyl Ether (ETBE) ND 0.5 ug/L Tert-Amyl Methy! Ether (TAME) ND 0.5 ug/L BIEX Components Benzene ND 0.5 ug/L ND 0.5 ug/L Toluene Ethylbenzene ND 0.5 ug/L m & p Xylenes ND 0.5 ug/L o X¥1enes ND 0.5 ug/L Internal Standards Results % Recovery Benzene, fluoro 50.0 100% Benzene-d5, chloro- 50.0 100% 1,4-Dichlorobenzene-d4 50.0 i 00% Surrogate Standards ' Methane, dibromofluoro- 52.8 106% 1,2-Dichloroethane-d4 46~9 94% Toluene-d8 ' 49.7 99% p-Bromofluorobenzene (BFB) 46.9 94%- Halcyon Laboratories, Inc. EPA 8260B' Laboratory Report` Water Sample Results in ug/L Certification Ct 1920 CLIENT: E2C Remediation 5300 Woodmere Drive~ Suite 105 Bakersfield, CA 93313 ' .. " ProjeCt ID · Mr Fast Analysis Date: 11/14/2003 Report Date ' ' 11/24/2003 Sample ID · 6615 M~¥-18 Analyte ReSult Method RL Units .5 ~Oxygenates t-Butanol (TBA) Tert-Butyl Alcohol ND 2.5 ug/L Methyl Tert-Butyl Ether (MTBE) ND 0.5 ugA. ;, Diisopropyl Ether (DIPE) ND 0.5 u~ Ethyl Ted~Butyl Ether (ETBE) ND 0.5 ug/L :, Tert-Amyl Methyl Ether (TAME) ND 0.5 ug/L BTEX Components 'I Ben'zene. . ND 0.5 ug/L ND 0.5 ug/L Toluene Ethylbenzene ND 0.5 ug/L m & p Xylenes ND 0.5 ug/L o Xylenes ND 0.5 Internal Standards Results · % Recovery Benzene,' fluoro 50.0 100% Benzene-d5, chloro- 50.0 100% 1,4-Dichlorobenzene-d4 50,0 100% Surrogate Standards 54.5 109% Methane, dibromofluoro- 1,2-Dichloroethane-d4 48.2 96% 'Toluene-d8 - - 51.0 102% p-Bromofluorobenzene (BFB) 47.4 95% HalCyon Laboratories, Inc. EPA 8260B Laboratory RepOrt Water Sample Results in ug/L Certification # 1920 CLIENT: E2C Remediation 5300 Woodn~ere Drive, Suite 105 Bakersfield, CA 93313 " Project 1D ' Mr Fast Analysis Date: t1/~4/2003 .. Report Date ' 11/24/2003 Sample ID · 6628 MW-20 Analyte' Result Method RL Units 5 Oxygenates .. t-Butanol (TBA) Ted-Butyl Alcohol ND 2.5 , ug/L Methyl Tert-Butyl Ether (MTBE) ND 0.5 ug]L. Diis°propyl Ether (DIPE) ND 0.5 ug/L Ethyl Ted-Butyl Ether (ETBE) ND 0.5 ug/L Tert-Amyl Methyl Ether (TAME) ND 0.5 ug/L Components BTEX Benzene ND 0.5 ug/L Toluene 11 0.5 Ethylbenzene 30 0.5 ug/L m & p Xylenes 21 0.5 ug/L o Xylenes 40 0.5 ug/L ! Internal Standards Results % Recovery I Benzene, fluoro 50.0 100% Benzene-dS, chl0ro- '50.0 100% ' 1,4-Dichlorobenzene-d4 50.0 100% I Surrogate Standards I IX]ethane, dibromofluoro- 52.9 106% 1,2-Dichloroethane-d4 48.5 97% .: -.-, : Toluene-d8 51.0 102% I P-Bromofluorobenzene (BFB) 48.6 97% atories Chain of Custody FOr.~n Cli~nl Name: F;,C Remcdialion, LLC 661.831.6906 Fax 661.831.623,1 Analysis. Rcquesled Projccl Name: ~. ~s.~ Sample MatnX Clicnl Address: 5300 Woodmcre Dr., Suilo 105. Bakersfield, CA 93313 ,,-oj~ ~,~,.: ~,~. L~ .... Sample Dale 8ample Time .8ample Descripl'i0n and Conlaincr Type Cornmcnl~ '- Turnaround Time Requested 24 Hour 48 Hour 5-Day Slandard Relinguished By: '~_ ~. Date: I ~.-I~-~ ]Relinquished By: Date; Received By: Dale: Received By: Da'lo: cyon abora~ories Chain of Custody Form Clienl Name: E:,C Reined alien, LLC 661.831.6906 fax 661.831.6234 Analysis Requested Clicnt Address: 5300 Woodmcre Dr., Suite 105. Bakersfield, CA 93313 ~ Acluc°u3 Sample Date Sample Tinle oample Descriplioa and Containcr Type Turnaround Time Requested: 24 Hour 48 Hour 5-Day Standard ~ Received By: Date: Received By: 'Date: :yon Labol-atories Chain of Custody FOrm Clienl Name:EzC Remedial on, LLC 661.'831.6906 fax 661.831.623,1 Analysis Rcqucslcd ~,-ojo~l Nme: '~,~ F,~ sa',,~ M~,~,~ Clicnl Address: 5300 Woodmere Dr., Suile 105. BakersField, CA 93313 ~Aqucous Sample Date~ Sample Time Sample Descriplion and Conlainer Type Cornrnonlb ~0und Time Requesl. ed: 24 Hour -48 Hour 5-Day Standard Received By: Date: Received By: Dale: I Project Number 1801BK03 Janua~_ 30. 2004 APPENDIX. C Free-Product/Water Disposal Manifests ! · E2C Remediation ~, . Appendix C . i NON-HAZARDOUS 1. Generator's US [:PA ID No. T Manifest Page1 ' | Docume.t~./ WASTE MANIFEST ' of 3. n~ rat rJs Na.....me a~d 6,~.ailing. Add~ss . 4. Generator's Phone ( 55'~ )~ ~ -- 5 ~] 7 7. Transpoder 2 Company Name 8, US EPA ID Number B, Transpo~er's Phone 9.~esignated Facili~ Name and Site Address' 10. US EPA ID Number C. Facili~'s Phone 11. W~sfe ~hipping N~m~ ~n~ Description 12. C~nt~iners 13. Total No. Type uanfi' d. D.~0j~Additi°nal~-~ ~ ~ ~l~O~.~,Descripti°ns for Moferiols~isted~ ~- ~ ~Ab°ve ~ ~ '~'~ ~ ' ~ E. Handling Codes for Wastes Listed Above ]5. SPecial Handling Instructions and Additional Information 16. GENERATOR'S CERTIFICATION: ce~ify the materials described above on this manifest are not subied to federal regulations for repo~ing proper disposal of Hazardous Waste. Printed~yped Name Signature/~ Acknowledgement ~ Receipt o~ Moteriols / 18. Transpo~ 2 A~knowledgement of Receipt of Materials Printed/Typed Name . Signature Month Day 19. Discrepancy Indication Space ..... ~ ,~~ 20. Facili~ Owne? or Operator: Ce~ification of receipt of waste materi01s'covered by this manifest except as noted in Item 19. ~ I Signature Month Day NON-HAZARDOUS 7. Generator's US EPA ID No. ~ [ Manifest 2. Page 1 WASTE MANIFEST · j Document No. of GeneratOr's Name and Mailing Address 4. Generator's Phone V ~ * ' ) ~/_ d~ Transpa~er, ~/~C°mpany'Name .'. ~.' ,~ / ~US ~P~-tp ~u~ ~ (~' A.[~r~p'oHer.;~z~q~e 7. Tr~nspo~er2CompanyName 8.' US EPA ID Number B. TranspoHer'sPhone ~esignated Facili~ Nome and Site Address i 10. US EPA ID Number C. F*cili~'s Phone 11. Waste Shipping Name and Description 12. 13. Total b. d. D. Additional Descriptions for Materials Listed Above , I E. Handling Codes for Wastes Listed Above I 1~, Special H~ndlin~ Insi~ucfions ~nd ~ddifion~l Information ~ ~.~.' u~--"~6 ~ ~' ' Printed/Typed Name S gnatur~/.~/,ttl.~,~,_4/ ~Z~ ~'G' Month ~k~wle~gement of R~ceipt of Materials Rrinted/Type~Name ' ' ' t Signature Month 18. Trans~o~er 2 Acknowledgement of Receipt of Materials Printed/Typed Name Sighature Month Day Year 19. Discrepancy Indication Space 20. Facili~ Owner or Operator: Certification of receipt of waste materials covered by~}his manifest except as noted in Item Printed/TypedName ~ ~ ~.~ ~' Signature.z Monfh Year L. T~NsPORTER SJ ' :::. NON-HAZARDOUS ]. Generator's US EPA ID No. ' I Manifest 2. Page 1 WASTE MANIF~:ST - j Document No .O of 3. Generator's Name and Mailing Address 4. Generator's Phone ( 5. Transporter 1 Company Name 6. US EPA ID Number A. TranspoHer's Phone 7. Tronspo~er 2 Company Name 8. US EPA ID Number B. Transpo~er's Phone 9. Deslgnated.. Facit ~ Name and Site Address 10. US EPA ID Number C. Focili~'s Phone '" ,.~ '~. '"~t-'~o~ ~... ~,~_~ 11. Waste Shipping Name and Description 12. Containers 13. Total h. C, d. D. ~ddJtional Descriptions for ~oterials Listed Above E. Handling Codes for Wastes Listed Above 15. ~ped~l Hand~ing Instructions and Additional information .. 16. GENERATOR'S CERTIFICATION: certify the materials described above on this manifest are n.~ subje~'~to~ federal, regulations for reporting proper disposal of Hazardous Waste. Printed/.~ed Name Si~na~Oe ~..~. l~i C~ , i Month Day Year ]7. Transporter 1 Acknowledgement of Receipt of Materials · P. rinted/Typed Name i Signature Month Da), Year 18. Transporter 2 Acknowledgement of Receipt of Materials P~'inted/Typed Name I Signature Month Day Year t 19. Discrepancy Indication Space 20. Facility Owner or Operator: Certification of receipt of waste materials covered by this manifest except as noted in Item 19. Printed/Typed Nam~ ~ . '~ ~ Signaturef./ ,m i ~ Month Day Year ' ..\.,~. ~-. \i..i,. ,,~.~-.., ~ I i. I~, . ~:. ~:_.-- TRANSPORTER #1 NON-HAZARDOUS 5. Generator's US EPA ID No. I Manifest 2. Page 1 WASTE MANIFEST .... Docume~.~.N, o. 3. Generator's Name and Mailing Address 4. Generator's Phone ( ~,'.~ 5. Transpoder.. xR1 Company? Name 6. US EPA ID Number A. Transpoder's Phone ~. Transporter 2 ~ompony Nome 8, US EPA ID Number B. Tr~nspoHer's Phone nmed ~c[lity N~me ~nd 5ire Address 10. U5 EPA ID Number C, F~dli~'s Phone ~ ~. W~ste 5h~pping Nome ~nd Description 12. Conteiners ~3. I Tote I No. Type uanti~ D. Additional Descriptions for Materials Listed Above E. Handling Code~' for Wastes Usted Above 15. Special Handling Instructions and Additional Information 16. GENERATOR'S CERTIFICATION: I certify tho materials described above on this manifest ore i~,t subje~e federal-regulations for reporting proper disposal of Hazardous Waste. 17. Transpolar 1 Acknowledgement of Receipt of Materials Printed~ed Name S~g n~ 18. Transpolar 2 Acknowledgement of Receipt of Materials ~ - Printed/Typed Name J Signature Month Day Year 19. Discrepancy Indication Space 20. Facility Owner or Operator: Certification.of receipt 9f waste material~ covered by this manifest except as noted in Item 19. - - Signature Printed/Typed Name ~ , TMNSPORTER I NON-HAZARDOUS l~. Generator's US EPA ID No. DocumentManifeStNo. 2. Page 1 WASTEMAN~FEST J '' . .... '.o4 Generator's Name and Mailing Address 5. Transporter 1 Company Name 6. ' ' US EPA ID Number A. Transporter's Phone 8. US EPA-ID Number B, Transporter's Phone 7. Transpori'er '~ Comp0n~:Name 9. Designated Facility Name and Site Address 10. US EPA ID Number C. Facility's Phone 12 Containers 13.'~ 14. 11. Waste Shipping Name and Description ~ I Total ' I Unit No. IType / Quantity lWt/Vol J~ 15. Special Handling Instructions and Additional Information . GENERATOR'S CERTIFICATION: I ceflify the materials described above on this manifest ore not subject to federal r~gul~tions for repoMing proper disposal of Hazardous Waste. Printed/Ty~.~d Name ~ [ Signatur~ ~'~ ~ ~ Month Day Year'~ I 17. Transpolar 1 Acknowledgement of Receipt of Materials r ~ ~ ~ Day Year Printed/Ty~.Name~ Signature~ b- [, [ [ 18. lron~po~er 2 ~cknowled~emen~ o{ Receipt o{ Signature Month Day Year Printed/TypedName I I' I ' ]9. Discrepancy Indication Space 20..Facili~ Owner or Operofor: Ce~ificatlon oS receipt at waste materials covered by this manifest except os noted in Item 19. - November 15, 2003 Mr. & Mrs. Ki Chu Yi Mr. Fast Service Station 600 Brundage Lane Bakersfield, CA 93304 Subject: Second Quarter 2003 Groundwater Monitoring Report Third Quarter 2003 Groundwater Monitoring Report and Remediation Status Report Mr. Fast Service Station 600 Brundage Lane Bakersfield, California Dear Mr. & Mrs. Yi: E2C Remediation (E2C) has completed Second and Third Quarter. 2003 Groundwater Monitoring activities at the property identified as the Mr. Fast Service Stati(~ at 600 Brundage Lane (Site), Bakersfield, California. This report documents those activities and presents the results, conclusions and recommendations. In addition, the remediation status report for the Site is presented. This Report has been prepared in response to the California Regional Water Quality Control Board - Central Valley Region letter, dated October 18, 2002. It is a pleasure to be of service to you, should .you have any questions regarding this submittal, do not hesitate to call either of the undersigned at 861-831-6906. Respectfully Submitted, E2C Remediation. ' William A. La ~ /~.~~"Pe? alwin, R.G. ¢4779 · Senior Geologist //~..~/~o,~k,~ '" '"'~*/,¢~_.,,,~ i[al Hydrogeologist [ ..~.~.!'~~ Ig' Exp' 11/30/04., Associate Engineering Geologist Haz~r~ls Division California Regional Water Quality Control Board City of Bakersfield Fife Department Central Valley Region 1715 Chester Avenue 1685 "E" Street Bakersfield, CA 93304 Fresno, CA 93706 Environmental Engineering Consulting & Remediafion, Inc. dba E2C Remediation 5300 Woodmere Drive, Suite105, Bakersfield, CA 93313 p: 661.831.6906 f: 661.831.6234 SECOND QUARTER 2003 GROUNDWATER MONITORING REPORT THIRD QUARTER 2003 GROUNDWATER MONITORING REPORT AND . ~ REMEDIATION STATUS REPORT ~R. FAST S£R¥1C£ STATION 600 Brundage Lane' Bakersfield, California November 15, 2003 Project Number 1801BK03 Prepared For: Mr. & Mrs. Ki Chu Yi 600 Brundage Lane Bakersfield, California Prepared By: E2C Remediation Environmental/Engineering Consultants 5300 Woodmere Drive, Suite 105 Bakersfield, CA 93313 P~'o]ect Number 1801BK0~ November 15. 200:J TABLE OF CONTENTS TABLE OF CONTENTS i LIST OF FIGURES LIST OF TABLES ' ' ............................................................................. i LIST OF APPENDICES ................................................................................................................ i EXECUTIVE SUMMARY ............................................................................................................. 1 Summary of Groundwater Monitoring Activities ......................................................... ............... 1 Summary of Second Qua,der 2003 Groundwater Analytical Data 1 Summary of Third Quarter 2003 Groundwater Analytical Data .............................................. 1 Discussion of Groundwater Analytical Data ...... ........................................................................ 2 .................................................................................. ....................................... 2 Conclusions Recommendations ...........~. ...................................................................................................... 4 1.0 INTRODUCTION .............................. . .................................... 5 1.1 Site Description ............................................................................................................. 5 1.2 Regional and Site Geology and Hydrogeology ............................................................... 5 1.2.1 Regional Geology 5 1.2.2 Regional Hydrogeology ............................................................ 6 1.2.3 Site Specific Subsurface Stratigraphy and'Hydrogeology ........................................ 6 2.0 SECOND QUARTER 2003 GROUNDWATER MONITORING ........................................... 7 2.1 Groundwater Elevations ................................................................................................ 7 2.2 GroundWater'Purging and Sampling.. ......................... .................................................... 8 2.3 Second Quarter 2003 Groundwater Analytical Data ........................................................ 8 3.0 THIRD QUARTER 2003 GROUNDWATER MONITORING ............................................... 9 3.1 .Groundwater Elevations · 9 · 3.1.1 Discussion of Water Table Elevation Data ............................................ ~ .................. 9 3.2 Groundwater Purging and Sampling .............................................................................. 9 3.3 Third Quarter 2003 Groundwater Analytical Data..: ........................................................ 9 4.0 DISCUSSION OF GROUNDWATER ANALYTICAL DATA .............................................. 10 5.0 REMEDIATION STATUS REPORT 11 5.1 Onsite RemediatiOn Status .................. · .. 11 5.2 Offsite Remediation Status .......................................................................................... 11 Evaluation of Offsite Remedial Efficiency ........................................................ 12 5.2.1 5.3 Conclusions Regarding Remedial Operations at the Site ............................................. 12 5.4 Remedial Operation Recommendations ....................................................................... 13 5.4.1 Onsite Remedial System ...................................................................................... '13 5.4.2 Offsite Remedial System ........ '. ....................................... , ..................................... 13 6.0 CONCLUSIONS 13 7.0 RECOMMENDATIONS ................................................................................................... 15 8.0 LIMITATIONS AND REPORT CERTIFICATION ............................................. 16 : m E~C Remediation i Prqiect Number 1801BK03 November 15. 200,t LIST OF FIGURES Figure 1 Site Location Map Figure Plan 2 Site Figure 3A Second Quarter 2003 Groundwater Gradient PIct Figure 3B Third Quarter 2003 Groundwater'Gradient PIct Figure 4A Second Quarter 2003 Benzene Isoconcentration PIct Figure 4B Third 'Quarter 2003 Benzene Isoconcentration PIct Figure 5A Second Quarter 2003 TPHg PIct isoconcentration Figure 5B Third Quarter 2003 TPHg Isoconcentration PIct Figure 6 TPHg Concentration Trends at MW-8 and MW-11R LIST OF TABLES Table lA Summary of Second Quarter 2003 Groundwater Monitoring Data Table lB Summary of Third Quarter 2003 Groundwater Monitoring Data Table 2 Historical Groundwater Elevation Data Table 3 Historical Groundwater Analytical Results Table 4 Summary of VES Monitoring Data Table 5 Summary of Onsite Hydrocarbon Mass Removed using VE/GASS (based on influent concentrations) Table 6 Summary of Onsite Hydrocarbon Mass Removed using VE/GASS (baSed on %LEL) Table'7 Summary of Offsite Hydrocarbon Mass RemoVed using VE/GASS (based on influent concentrations) Table 8 Summary of On- and Off-Site Groundwater pumping LIST OF APPENDICES Appendix A Second Quarter 2003 Groundwater Purge Data Sheets Appendix Quarter 2003 Groundwater Analytical Laboratory Report B Second Appendix C Third Quarter 2003 Groundwater Purge Data Sheets Appendix D Third Quarter 2003 Groundwater Analytical Laboratory Report Appendix E Copies of' Non-Hazardous Manifests E2C Remediation Prelect Number 1801BK05 November 15. 200,"/ EXECUTIVE SUMMARY This report contains the results of the Second and Third Quarter 2003 groundwater monitoring events and the progress.of groundwater remediation at the Mr. Fast Service Station property (Site) located at 600 Brundage Lane, Bakersfield, California. This report is presented to comply with the directive of the Oalifornia Regional Water Quality Control Board - Central Valley Region (RWQCB) dated October 18, 2002. This report presents the results of the work activities and includes analytical data, groundwater elevation data, and interpretations of current groundwater quality and flow direction beneath the Site and the immediate vicinity. SUmmary of Groundwater Monitoring Activities On June 10, 2003 and August 5, 2003, groundwater levels were measured in all wells at the Site. Groundwater samples were then collected from all wells containing water and the samples were submitted to a State of California-Certified analytical laboratory for chemical analyses for the follOwing constituents: · Total Petroleum Hydrocarbons as gasoline (TPHg) using EPA Method 8015M; and · Benzene, toluene, ethylbenzene, and total xylenes (BTEX) and five fuel oxygenates of methyl tertiary-butyl ether (MtBE), tertiary-butyl alcohol (TBA), di-isopropyl ether (DIPE), ethyl tertiary-butyl ether (ETBE), and tertiary-amyl methyl ether (TAME)' using EPA Method 8260b. Summary of Second Quarter 2003 GroUndwater Analytical Data Benzene was repOrted as non-detect (<0.5 Izg/L) in all groundwater samples collected this quarter; · Toluene was reported in groundwater samples from five (5) wells at concentrations ranging from a Iow of 2.87 pg/L (MW-7) to a high of 25,700 Izg/L (MW-11R); · Ethylbenzene was reported in groundwater samples from ten (10)wells at concentrations ranging.from a Iow of 0.56 Izg/L (MW-17S) to a high of 3,140 l~g/L (MW- 11R); · Xylenes (total) were reported in groundwater samples from ten (10) wells at concentrations ranging from a Iow ofl.60 pg/L (MW-17S) to a high of 10,040 pg/L (MW- 8); reported samples six (6) wells at concentrations ranging TPHg were in groundwater from from a Iow of 73.2 pg/L (MW-17S) to a high of 9,630 p.g/L (MW-8);. ·MtBE was reported as non-detect (<0.5 p.g/L) in all groundwater samples collected fOr this quarter; and ·DIPE, ETBE, TAME, and TBA were reported as non-detect (<0.5 p,g/L; <2.5 Izg/L for TBA) in all groundwater samples collected for this quarter. Summary of Third Quarter 2003 Groundwater Analytical Data ·BenZene was reported in groundwater samples from two (2) wells at concentrations of 1.2 Izg/L (MW-11 R) and 5.0 I~g/L (3.0 lzg/L in duplicate sample) (MW-13); ,Toluene was' reported in groundwater samples from five (5).wells'at concentrations ranging from a Iow of 3.0 Izg/L (MW-7) to a high of 12,120 p,g/L (MW-11R); · Ethylbenzene was reported in groundwater samples f'rom nine (9) wells at concentrations ranging from a Iow of 2 Izg/L (MW-10) to a high of 2,430 Izg/L (MW-8); I E~C Remediation I Project Number 1801BK03 November 15. 2003 Xylenes (total) were reported in groundwater samples from nine (9) wells at concentrations ranging from a Iow of 4.1 lzg/L (MW-lO) to a high of 9,630 jzg/L (MW-8); · 'TPHg were reported in groundwater samples from six (6) wells at concentrations ranging from a Iow of 270 pg/L (MW-9) to a high of 6,060 Izg/L (MW-8); · MtBE was reported as non-detect (<0.5 ~zg/L) in all groundwater samples collected for this quarter; , DIPE, ETBE, and TAME were reported as non-detect (<0.5 pg/L; <2.5 lzg/L for TBA) in all groundwater samples collected for this quarter; and · TBA was reported in the groundwater.sample from one (1) well at a concentration of 40 p,g/L (MW-1). Discussion of Groundwater Analytical Data MtBE has been reported as non-detect at a detection limit of 0.5 p,g/L since June 2001. In general, fuel hydrocarbon concentrations in groundwater show an overall decreasing' trend. For example, TPHg concentration trends at MW-8 (onsite well) and MW-11R (offsite well). MW- 8 has shown free-product in the past and its Third Quarter 2003 TPHg concentration is the lowest recorded. The Third Quarter 2003 TPHg concentration at MW-11R is also its lowest recorded. The other fuel constituents also generally mimic this decreasing trend. Of note, benzene has been reported as non-detect (<0.5 ~g/L) at all wells, except MW-11R and MW-13 for a minimum of three (3) consecutive quarters. The decreasing concentrations of fuel hydrocarbons in groundwater can be attributable to two (2) processes: 1) Remediation efforts, and 2) an increase in natural attenuation, which is the result of the remediation efforts, specifically the introduction of oxygen into the aquifer using the air sparging system.. The sporadic very loTM 'reported fuel hydrocarbon compound Concentrations in groundwater at the furthest downgradient wells suggest that the leading edge of the groundwater plume has been defined. Conclusions Based on the data presented in this report, E2C makes the following conclusions: · Overall groundwater elevations increased 3.04 feet since the First Quarter 2003;' · Increasing Water table elevatipns observed in the Second and Third Quarters of each year are attributable to recharging conditions of the unlined canal that bounds the Site to the west; · Groundwater flow at the Site is generally southeast in the onsite area and bends to the . south-southeast in the offsite area. The onsite flow direction is predominately controlled by recharging from the canal, whereas the flow direction in the offsite area reverts to the regional flow direction (i.e., the further from the canal, the more predominate the regional groundwater pattern); · The groundwater gradient in the area between MW-2 (Onsite and upgradient well) to MW-11R (offsite and downgradient) is significantly flatter (0.025-0.053 ft/ft) than the gradient calculated downgradient of MW-11R (MW-11R toMW-15S) (0.14-0.15 ft/ft). I E2C Remediation 2 I Project Number 1801BKO,?, November 15. 200,t I · Wells MW-15D, MW-16, and MW-17D are generally dry, suggesting that groundwater flow along Fig Street is laterally discontinuous. The water table has fluctuated at MW- : 15S greater than seven (7) feet (reported dry in First Quarter 2002, contained 7.71 feet ~ of water in' Third Quarter 2003). This suggests that groundwater flow conditions in the vicinity of this well can fluctuate significantly over time; , Benzene has been reported as non-detect for a minimum of three (3) consecutive I quarters wells, except for MW-11R and MW-13, which had very Iow reported at all detections (<5 ~g/L) in the Third Quarter 2003; i . The benzene portion of the groundwater plume appears to be confined to the area of wells MW-13 and MW-14; · Although benzene was reported at MW-18 in the Third Quarter 2002 (36 tzg/L) and in the I Fourth Quarter 2002 (7.1 ~g/L), it has been reported as non-detect for three (3) consecutive quarters. WelI'MW-18 is screened in a deeper water-bearing zone than nearby wells MW15S and MW-17S; I · Significant concentrations of toluene, ethylbenzene and xylenes (total) continUe to be reported in groundwater samples from Wells MW-7 (offsite), MW-8 (onsite), MW-11R (offsite), and MW-12 (offsite); however, these show decreasing trends; I . In general, fuel concentrations have decreased off-site, hydrocarbon on- and which is the result of the remedial operations (vapor extraction, groundwater air sparging, and groundwater pumping). Additionally, the air sparging has enhanced the natural I processes through oxygen to aquifer water (this supplies attenuation the addition of the additional ion receptors, thus allowing enhanced microbial degradation of the fuel hydrocarbon compounds); I · The downgradient edge of the groundwater plume appears to be defined based on the sporadic reported Iow concentrations of fuel hydrocarbons at MW-15S, MW-17S and MW-18; I · Influent concentrations to the onsite remediation system declined rapidly after start up indicating a "groundwater-only" contaminant plume. Cycling of the system on a three i week off and one week on basis resulted in a significant increase in system influent concentration and hydrocarbon removal rate from the Third to Fourth Quarters 2002; however, influent concentrations declined in the First Quarter 2003; I · For a one-year period (April 2002 to .April 2003), the onsite remediation system removed approximately 2,042 pounds of hydrocarbons from the subsurface; · Based on a ratio of electricity costs per unit mass of hydrocarbons removed, the I operation of the VES machine for the onsite remedial operation was deemed economically unviable and the machine was shut down; however, air sparging operations continued; I · The offsite thermal oxidizer VES machine connected and was started for of f site remediation. After one week of operation it was apparent that operation of this machine was economically unviable due to a disproportionate ratio of fuel costs to mass of I hydrocarbons removed. This machine shut down and with electric was replaced an oxidizer VES machine; operation of this machine was also determined to be economically unviable and it was demobilized from the Site; ! ! I E2C Remediation 3 Prc_iect Number 1801BKO$ November 15:2005 · After shutting down both the on- and off-site remedial systems a bi-weeklY groundwater/free-product pumping operatiOn was initiated. This operation has resulted in removal of 35,880 gallons of highly impacted groundwater from April through October 2003; = A permit modification was submitted to the SJVAPCD to replace the offsite VES machine with a GAC system. The permit was approved and the construction of the GAC was authorized; and . It is anticipated that the offsite GAC will be brought on line in early 2004. The offsite .groundwater air sparge system will also be restarted at that time. Recommendations Based on the data presented above and the conclusions from this makes the data,~ E2C following recommendations: [] Continue to conduct groundwater monitoring'at the Site on a quarterly basis; · Analyze grOundwater samples for BTEX.and five fuel oxygenates using EPA Method 8260b and TPHg using EPA Method 8015M; · Discontinue use of the VES machine in the onsite area and convert operation of the · GASS in the onsite area to a Iow flow oxygen injection system to oxygenate groundwater and enhance microbial degradation; · Continue groundwater pumping operations in both the onsite (MW-8) and offsite (MW-7, .MW-11R, MW-13, and MW-13) areas on a bi-weekly basis as groundwater pumping operations have effectively removed free-product and decreased dissolved concentrations in groundwater; - Convert the offsite vapor extraction portion of the remedial system to a GAC system; · When the offsite GAC system is brought on line, restart the offsite GASS to oxygenate . the .groundwater and strip hydrocarbons. The offsite combined GAC/GASS system (GAC/GASS) will be used to capture hydrocarbons from the sparged and oxygenated groundwater as it migrates downgradient from the onsite area; and · PerfOrm weekly .operations and maintenance visits for the offsite GAC/GASS on a weekly basis. This will include carbon canister replenishment as necessary. Note: Based on conversations with the SJVAPCD it has been found that a lengthy public notification and hearing.process would be required to convert the onsite remedial system to an alternative system~ As such, E2C is recommending that only the onsite GASS continue when the offsite GAC/GASS commences operation. An Amendment to the PTO Request'was submitted to the SJVAPCD to convert the offsite system to a GAC system. The Amendment Request was approved by the SJVAPCD in July. 2003. The GAC system is currently in construction and will be mobilized to the Site when completed. It is anticipated that GAC startup will commence in early 2004. The offsite air sparging system will be restarted when free-product is reduced to 'sheen' conditions. In addition, the onsite GASS operation will be converted to an oxygen injection system. I E~C Remediation 4 Prqiect Number 1801BK05 November 15. 2003 1.0 INTRODUCTION This report contains the results of the Second and Third Quarter 2003 groundwater monitoring events and the remediation Status for the Mr. Fast Service Station at 600 Brundage Lane (Site), Bakersfield, California. This report is presented to comply with the directive of the California Regional Water Quality Control Board - Central Valley Region (RWQCB) dated October 18, 2002. This report presents the results of the work activities described above and includes groundwater analytical and elevation data, and interpretations of current groundwater quality and flow, direction beneath .the Site and immediate vicinity. 1.1 Site Description The Site is located at 600 Brundage Lane in Bakersfield, California (see Figure I for Site location map). The Site is located in the SW 1/4 of SE 1/4, Sec. 31, T29S, R28E, Diablo Base and Meridian.. The present property consists of a rectangular-shaped lot containing one building located in the Northeast corner (see Figure 2 for Site Plan). The building is currently occupied by a small retail business, Mr. Fast Gas & Liquors. Attached to the west side of the building is a fenced in storage area. The property is bordered along its northern side by 1st Street, along its eastern side by T Street (on the South side of Brundage T Street becomes Berneta Avenue), along its southern side by · Brundage Lane, and along its western side by the Kern Island Canal - Central Branch. Residential areas, interspersed with light commercial/industrial areas, are located adjacent to the Site. Vista High School is located approximately 1,000 feet North of the Site. Highway 58, an East-West trending four-lane divided freeway is located approximately 450 feet south of the Site. ' I 1.2 Regional and Site Geology and Hydrogeology 1.2.1 Regional Geology I The property is located in the south central area of the San Joaquin Valley where the Sierra Nevada, Great Valley, and Coastal Range physiographic provinces meet. The southern end of the Sierra Nevada Province is composed of a massive block of igneous and metamorphic rock i of Mesozoic age and older. This Sierran block, 40 to 100 miles wide and 400 miles long, slopes .five to seven degrees beneath the San Joaquin Valley. The Coastal Range province on the west consists of tectonically deformed and fractured marine and non-marine sedimentary rocks Iof Jurassic, Cretaceous, and Tertiary age, which dip eastward beneath the Sand Joaquin Valley. The Great Valley province is a broad asymmetrical synclinal trough, which is knoWn as the Sacramento Valley in the north and the San Joaquin Valley in the south. I Beneath the South'ern San Joaquin Valley floor, the Sierran plut0nic and metamorphic rock block is overlain by consolidated marine rocks of Jurassic and Cretaceous age. These rocks i are overlain by continental marine and non-marine sedimentary rocks of Tertiary age, which are comprised of continental deposits of consolidated to semi-consolidated, fossiliferous sandstone, siltstone, and shale which thicken toward the south and west. The Tertiary rocks, in turn, are i overlain by unconsolidated continental deposits, which consist of Pliocene to Holocene river and lake sediments comprised of gravels, sands, silts, and clays. I E=C Remediation 5 Prqiect Number 1801BKO3 November 15. 200,? Surface. features of the floor of the San Joaquin Valley consist of dissected uplands, alluvial fans, overflow areas, and lake bottoms. Dissected uplands lie between the mountains and the nearly flat Valley floor and are manifest in Iow-lying hills through, which perennial and intermittent streams flow. These features consist of reworked older alluvium. The alluvial fans are the sites of active stream deposition of sand and silts derived from the Sierra Nevada and the dissected uplands. The overflow lands and lake bottoms lie in the central part of the Valley where silt and clay accumulate in quiet lake and marsh environments. 1.2.2' Regional Hydrogeology The Central Valley of California is underlain by a broad, thick hydrogeologic unit, which consists of soil and rock of varying porosity and permeability. Physical dimensions are approximately 50 miles wide at the widest point in the Valley, 400 miles long, and as much as 2,000 feet deep. Recharge to regional aquifers consists of infiltration of seasonal precipitation and percolation of surface waters. The Valley aquifer of greatest storage, highest quality, and greatest storage, highest quality, and greatest accessibility for domestic and agricultural use consists of the alluvial and lacustrine continental deposits extending to the depths of 1,500 to 2,000 feet beneath the San Joaquin Valley floor. Lithologic and hydraulic properties of.these sediments are largely the product of the sediment source and the depositional environment. These sediments range in size from clays to boulders and include all mixtures between the extremes. Those of the west side of the Valley are derived largelY from the Coastal Ranges, which tend to consist of shales and fine sandstones with limited permeability. The east sediments are derived mainly from granitic materials of the Sierra Nevada which are generally coarser and much more permeable. Sediments encountered during the boring procedures at the Mr. Fast and adjoining parcels consisted of alluvial deposits comprised of fine-to-coarse grained sands containing quartzite and micas. Permeability in these sediments is high. Regionally, the depth to groundwater ranges between 150 and 200 feet below grade, according to the 1995 Water Supply Report published by the Kern County Water Agency in January 1998. Unconfined groundwater, or perched groundwater, beneath the subject property is significantlY shallower than the regional depth, presumably because of the site location immediately adjacent to the unlined Kern Island Canal ' Central Branch. In general, the regional hydraulic gradient in the area is towards the northwest. Measurements made within shallow onsite and offsite wells over the course of this project have shown that the gradient in the perched groundwater beneath the Site has been consistently towards the southeast, which is oblique away from the unlined canal. 1.2.3 Site Specific Subsurface Stratigraphy and Hydrogeology In general, the subsurface at the Site is characterized by approximately ~5 feet of silty sand at the surface followed by sand to approximately 50 to 55 feet bgs. Silty clays, clayey silts, sandy silts, and finer-grained silty sands occur from that depth to approximately 80 feet bgs. In previous borings for wells (e.g., MW-10), first groundwater was encountered at approximately 47 feet bgs. At the boring for well MW-11R, first groundwater was encountered between 46.5 and 50 feet bgs. At well .MW-12, first groundwater was not encountered until 56.5 to 60 feet bgs. I E2C Remediation 6 Prefect Number 1801BK03 November 15. 200,~ On-site, specifically at wells MW-1 through MW-8, elevations increased groundwater an average of approximately 2 feet from June to August 2001. During that same period of time in the off-site a~ea of wells MW-7, MW-9, and MW-10 groundwater elevations also increased, an average of approximately 1.7 feet while at wells MW-11R and MW-13, elevations groundwater increased significantly, approximately 7 feet. MW-11R is located approximately 90 feet south of MW-10 and MW-13 is located approximately 100 feet southeast of MW-11R in the general downgradient direction. ' This data indicates that a steep groundwater exists very gradient between MW-10 and MW-11R with the gradient flattening out somewhat in the area of MW-11R to MW-13. A review of the boring logS for the Site revealed that differences in lithology are the . cause for this change in gradient. in the area from wells MW-1 and MW-2 to the area of well MW-10, the top of the groundwater table occurs above the silty layer, which is generally encountered at approximately 50 feet bgs. This suggests that principal groundwater movement occurs on top of the silty layer within the coarser-grained materials as flow from the recharge point along the canal until it reaches the area of well MW-10. Upon reaching the area of well MW-10, groundwater then matriculates down into the silty layer, which has a lower hydraulic conductivity than the coarser materials lying above' (i.e., takes .longer for the groundwater to move through the finer grained flow medium). This transfer from flow in coarser materials to flow in finer-grained materials creates a steeper' gradient. 'As expected, groundwater elevations~downgradient of the change in flow medium materials are much deeper than those upgradient of this change and that area downgradient can experience a wide fluctuation in levels due to even minor recharge or discharge effect. Note: Discharge/recharge conditions in the canal also greatly affect the gradient beneath the Site. In June 2002 groundwater elevations increased 5 to 7 feet across the Site. This coincided with dredging of the canal, which removed fines and allowed for higher recharge into the subsurface. 2.0 SECOND QUARTER GROUNDWATER MONITORING 2003 E2C personnel conducted Second Quarter 2003 groundwater monitoring activities on June 10, 2003. The monitoring included measuring depths to groundwater, Checking wells for free- product, purging wells, and collecting groundwater samples. 2.1 Groundwater Elevations Prior to purging and sampling, each well was checked for the presence of free-product using a clear bailer.. Free-product (0.02") was observed only in MW-13 in the Second Quarter 2003 monitoring event. Depth to groundwater was then measured at each well below the top of casing (BTOC) at the north side of the casing to the nearest 0.01-foot using a Solinst water level meter (Table I summarizes depth to Water measurements). Based on the previous data regarding the Site, measurements were taken at the wells in order of least impacted location to most impacted location. All downhole equipment was washed in an Alconox solution and double rinsed with clean water prior to each use and between each well. Groundwater elevations were calcUlated by subtracting the measured depths to water from the surveyed, elevations of the wellheads (see Table lA for summary of Second Quarter 2003 groundwater elevations; see Table 2 for summary of historical groundwater elevations). Based I E2C Remediation 7 Pro]ec! Number 1801BKO~ Novembe. r 15. 200,1 on the depth to measurements, flow for the Second Quarter 2003' groundwater groundwater was to the south-southeast at a steep average gradient of 0.020 ft/ft from the site proper to the area of well MW-12R and at a very steep gradient of 0.15 ft/ft between MW-12R and MW-15S, located in Fig Street (see Figure 3A). Overall groundwater elevations increased of an average 1.37 feet since the First Quarter 2003. 2.2 Groundwater Purging and Sampling Groundwater was purged at each monitoring well in order to obtain representative groundwater samples. A minimum of three well casing volumes of groundwater were removed from each well prior to sampling utilizing a battery-powered submersible pump. A casing volume is calculated by multiplying the height of the freestanding water column in the well by the.cross- sectional area of the well casing. During purging, groundwater parameters of temperature, pH and conductivity were measured as water was pumped from. the wells to verify sufficient purging and stable physical parameter measurements on field instruments (see Appendix A for groundwater purge data sheets). The pump was decontaminated in a solution of Alconox and water and double rinsed with clean potable water before each use. After purging, groundwater at each well was sampled using a new disposable bailer. A groundwater sample from each well was decanted into three (3) 40-mi volatile organic analysis (VOA) vials. Care was taken to prevent headspace or bubbles in the. vials, which were sealed with Teflon-lined lids..Samples were labeled and placed in an iced cooler maintained at 4 degrees Centigrade, accompanied with a Chain-°f-Custody document for transport to the analytical laboratory. 2.3 Second Quarter 2003 Groundwater Analytical Data Groundwater samples were analyzed at Halcyon Laboratories, Inc. (Certification #1920) of Bakersfield, California for TPHg using EPA Method 8015M, BTEX using EPA Method 8260b, and fuel oxygenate compounds of Di-isopropyl Ether (DIPE), Ethyl tertiary-Butyl Ether (ETBE), Methyl tertiary-Butyl Ether (MtBE), tertiary-Amyl Methyl Ether (TAME), and tertiary-Butyl Alcohol (TBA) using EPA Method 8260b. Appendix C presents the analytical laboratory report. LaboratOry analytical data for the Second Quarter 2003 are summarized in Table 1 and along with historical data in Table 3. Groundwater was sampled at all wells that were not dry and did not contain free-product. The results of the groundwater chemical analyses are summarized following: · Benzene was reported as non-detect (<0.5 jzg/L) in all groundwater'samples collected this quarter (see Figure 4A); · Toluene was reported in groundwater samples-from five (5) wells at concentrations ranging from a Iow of 2.87 ~g/L (MW-7) to a high of 25,700 ~zg/L (MW-11R); .- Ethylbenzene was reported in groundwater samples from ten (10) wells at concentrations ranging from a Iow of 0.56 ~zg/L (MW-17S) to a high of 3,140 Izg/L (MW- 11R); · Xylenes (total) were reported in~ groundwater samples from ten (10) wells at concentrations ranging from a Iow of 1.60 p.g/L (MW-17S) to a high of 10,040 Izg/L (MW- 8); · TPHg were reported in groundwater samples from six (6) wells at concentrations ranging from a Iow of 73.2 ~zg/L (MW-17S) to a high of 9,630 izg/L (MW-8) (see Figure 5A); E~C Remediation 8 ' I Pro_iect Number 1801BK0~1 November 15. 2003 I was reported as non-detect (<0.5 tzg/L) in all groundwater samples collected for MtBE this quarter; and I · DIPE, ETBE,' TAME, and TBA were reported as non-detect (<0.5 ~zg/L; <2.5 ~g/L for TBA) in.all groundwater samples collected for this quarter. 3.0 THIRD QUARTER 2003 GROUNDWATER MONITORING E2C personnel conducted Third Quarter 2003 groundwater monitoring activities on August 5, 2003. The monitoring included measuring depths to groundwater, checking wells for free- product, purging wells, and collecting groundwater, samples. 3.1 Groundwater Elevations Groundwater monitoring was conducted as discussed above in Section 2.1. Groundwater. monitoring data for each well were recorded on a purge data sheet (see Appendix C). Groundwater elevations were calculated by subtracting the measured depths to water from the surveyed elevations of the wellheads (see Table lB for summary of Third Quarter 2003 groundwater elevations; see Table 2 for summary of historical groundwater elevations). Based on the depth to groundwater measurements, groundwater flow for the Third Quarter 2003 was to the south-southeast at a steep average gradient of 0.024 ft/ft from the site proper to the area of well MW-12R and at a very steep, gradient of 0.14 ft/ft between MW-12R and MW-15S, located in Fig Street (see Figure 3B). Overall groundwater elevations increased an average of 1.67 feet since the Second Quarter 2003 and 3.04 feet since the First Quarter 2003. 3.1.1 Discussion of Water Table Elevation Data Groundwater elevation increase, as measured at the Site in the Second and Third Quarters 2003, also 'was observed during the same time period in 2002. In the Fourth Quarter 2002 and the First Quarter 2003 groundwater elevations decreased overall. It is anticipated that this same decrease will be observed in the Fourth Quarter 2002 and the First Quarter 2003. These increases and decreases in water table elevations are most likely related to the amount of recharge being provided by the unlined canal that forms the Site's western boundary. The recharge effect is seen in a time-delayed manner (i.e., spring runoff takes time to propagate downward such that its greatest effect on water table elevation is observed in the summer months). Groundwater flow at the Site is generally southeast in the onsite area and bends to the south- southeast in the offSite area. The onsite flow direction is predominately controlled by recharging from the canal, whereas the flow direction in the offsite area reverts to the regional flow direction (i.e., the further from the canal, the more predominate the regional grOundwater flow pattern). 3.2 GroUndwater Purging and Sampling Groundwater was purged and sampled at each well as discussed above in Section 2.2. 3.3 Third Quarter 2003 Groundwater Analytical Data Groundwater samples were analyzed at Halcyon Laboratories, Inc. (Certification #1920).of Bakersfield, California for TPHg using EPA Method 8015M, BTEX using EPA Method 8260b, and DIPE, ETBE, MtBE, TAME, and TBA using EPA Method 8260b. Appendix D presents the analytical laboratory report. .I E2C Remediation . 9 Pr(_iect Number 1801BKO~ November 15. 2003 Laboratory analytical for the Third Quarter 2003 are summarized in Table I and along with data historical data in Table 3. Free-product was not found in any of the monitoring wells this quarter therefore, groundwater was sampled at all wells that were not dry. Groundwater analytical data quarter are following: for this summarized · Benzene was reported in groundwater samples from two (2) wells at concentrations of 1.2 I~g/L (MW-11R) and 5.0 ~g/L (3.0 ~g/L in duplicate sample) (MW-13) (see Figure 4B); · Toluene was reported in groundwater samples from five (5) wells at concentrations ranging from a Iow of 3.0 F,g/L (MW-7) to a high of 12,120 p,g/L (MW-11R); · Ethylbenzene was reported in groundwater samples from none (9) wells at concentrations ranging from a Iow of 2 p.g/L (MW-10)'to a high of 2,430 p.g/L (MW-8); Xylenes (total) were reported groundwater samples from nine (9) wells at in concentrations ranging from a Iow of 4.1 tzg/L (MW-10) to a high of 9,630 jzg/L (MW-8); · TPHg were reported in groundwater samples from six (6) wells at concentrations ranging' from a Iow of 270 Izg/L (MW-9) to a high of 6,060 j~g/L (MW-8) (see Figure 5B); - MtBE was reported as non-detect (<0.5 ~g/L) in all groundwater samples collected for this quarter; · nIPE, ETBE, and TAME were reported as non-detect (<0.5 Izg/L; <2.5 jzg/L for TBA) in all groundwater samples collected for this quarter; and was reported in the groundwater sample from one (1) well at a concentration of 40 TBA lzg/L (MW-1). 4.0 DISCUSSION oF GROUNDWATER ANALYTICAL DATA MtBE has been reported' as non-detect at a detection limit of 0.5 ~zg/L since June 2001. As previous reports, analysis a free-product sample showed no discussed in chemical of in 2001 fuel oxygenates in the free-product. Based on this analytical data, it appears that the fuel contamination source consisted of non-oxygenated gasoline. Combined with the absence of the more Volatile benzene fraction, this that the fuel contamination leak old. suggests was In general, fuel hydrocarbOn concentrations in groundwater show an overall dec[easing trend. For example, as seen in Figure 6, a graph of TPHg concentration trends at MW-8 (onsite well) and MW-11R (offsite well). MW-8 has shown' free-product in the past and its Third Quarter 2003 TPHg concentration is the lowest recorded. The Third Quarter 2003 TPHg concentration at MW-11R is also its lowest recorded. The other fuel constituents also mimic this generally decreasing trend. Of note, benzene has been reported as non-detect (<0.5 izg/L) at all wells, except MW-11R and MW-13 for'a minimum· of three (3) consecutive quarters. The concentrations rePorted at MW-11R and MW-13 <5 were very Iow, I~g/L. The decreasing 'concentrations of fuel hydrocarbons in groundwater can be attributable to two Remediation and increase in natural which is the (2) processes: efforts, 2) an attenuation, result of the remediation efforts, specifically the introduction of oxygen into the aquifer using the air 'sparging system. The sporadic very Iow reported fuel hydrocarbon compound concentrations in groundwater at the furthest downgradient wells suggest that the leading edge of the groundwater plume has been defined. ' 'E~C Remediation 10 Pro_iect Number 1801BK05 ~ November i5. 200,~ , TION STATUS REPORT 5.0 REMEDIA 5.1 Onsite Rernediation Status The on-site remedial system consists of vapor extraction and groundwater air sparging system (VE/GASS) equipment. Operation of the on-site system commenced on April 4, 2002. Startup testing was performed on April 10, 2002 under the inspection of Me. Bruce Muir-SJVUAPCD. The initial remediation progress report for the project was submitted in c(~njunction with the Second Quarter 2002 Groundwater Monitoring Report. Moderately high influent concentrations and high flow rates were observed at the onset of the remediation project. Rapid declines in the influent concentrations were observed after approximately 30 days of continuous operation. Significant and rapid declines in influent concentration are indicative of "groundwater-only" contaminant plumes or can be caused by. channeling in the vadose zone. Generally,' when channeling is occurring an increase in flow rate and decrease in well field vacuum are observed. E2C field personnel carefully observed machine operational parameters and did not record significant flow increases' or well field vacuum decreases; therefore, the significant decline in influent concentrations is likely a result of a "groundwater-only" contaminant plume. In an effort to increase the hydrocarbon removal rate, E2C began cycling (one week on and one week off) the vapor extraction system to determine whether cycling would increase influent concentrations (note: The air sparge system was left on during the vapor extraction system off times). The results clearly demonstrated that cycling increased influent concentrations. Prior to cycling on 'May 14, 2002, influent concentrations had dropped to 95 ppmv. After a one-week off .cycle, influent concentrations were measured at 300 ppmv at restart. As cycling continued, the results became even more dramatic. On June 17, 2002 influent concentrations were measured at 620 ppmv. Hydrocarbon removal rates are a function of influent concentration, flow rate, and run time. Flow rate remained nearly constant, run time was halved (due to cycling) and influent concentration increased by eleven (11) times; therefore, the net result was a 5.5 times increased removal rate over the same elapsed calendar time. As these results clearly demonstrated, cycling of the remediation System at this site produced significantly higher hydrocarbon removal rates. Therefore, it was E2O's recommendation to continue cycling the system until cycling no longer produced desirable results. Cycling of the system on a one-week operational and three-week non-operational basis had resulted in increased influent concentrations and hydrocarbon removal rates in January 2003. In February 2003 hydrocarbon rates again decreased with a subsequent removal rate decrease. In April 2003 it became apparent that the remedial system was using electricity at a rate significantly' greater than the resultant units of hydrocarbon mass removed (i.e., the eXisting system was not cost effective for the mass removed). As of April 3, 2003 only approximately 2,042 pounds of hydrocarbons had been removed from the onsite subsurface. 5.2 Offsite Rernediation Status A Stealth Firecat 250 Direct fired Thermal/Catalytic Oxidizer with a Competitor Plus poSitive displacement vacuum pump and Lincoln Electric 10 horsepower motor used to extract was hydrocarbon vapors from the soil via the network of six (6) extraction wells (VE-6 through VE-9, MW-11R, and MW-12). In addition, an Ingersol Rand 10-hp air compressor was used to inject air into the aquifer through a series of five (5) offsite air wells (AS-4 sparge through AS-8). 11 Remediation Project Number 1801BK05 November 15, 2003 5.2.1 Evaluation of Offsite Remedial Efficiency The offsite remedial system commenced Operations on February-28, 2003. By March 6, 2003, it was readily apparent that continued operation of the-thermal machine' would be economically unviable as the ratio of supplemental propane fuel plus electricity (for the machine) to the mass removed was extremely disproportionate with only a maximum of 36.5 pounds of hydrocarbons removed.for the one-week period. As such, the machine was shut down and the machine was demobilized. An electrical oxidizer ECAT 300 was mobilized to the Site on April 7, 2003 to evaluate its potential effectiveness. After a short period of operation (less than one day) it was found that the influent concentration was Iow (<85 ppmv) and that, as with the thermal unit, the ratio of ~lectrical cost per mass removed would also be extremely disProPortionate. The ECAT and the air compressor were shut down and demobilized from the Site. After determining that operation of the VE/GASS using either gas or electrically heated oxidizers was economically infeasible, E2C began a bi-weekly free-product/groundwater pumping operation. Pumping operations commenced on April 8, 2003 and have continued on a, roughly, bi-weekly basis through the .present date. For the period of April through October 2003, approximately 361000 gallons were removed. Pumping operations are generally conducted as follows: · Onsite well MW-8 and offsite wells MW-7, MW-11R, MW-12 and MW-13 are checked for free-product using an oil-water interface probe; , Any wells containing free-product are pumped until no free-product is measured or the -well dewaters, whichever occurs first; · All other wells are pumped until dewatered. The wells are then allowed to recover and then re-pumped; and are · The pumped water is then transported to Remedy Environmental under non-hazardous manifest for recycling (copies of manifests are included in Appendix E); 5.3 Conclusions Regarding Remedial OPerations at the 'Site Based on the remedial operations at both .the on-site and off-site areas, the following concluSions can be made: · The contamination in the subsurface at the Site appears to be primarily a groundwater problem; · Influent concentrations for the onsite system have declined to a state such that use of the ECAT machine is.not economically viable due to the high cost of electricity usage per hydrocarbon mass removed; unit of · Use of either a thermal or electrical machine in the offsite area is also economically unviable for the same reasOn that the onsite machine use is economically unviable; and · Groundwater/free-product pumping has been very effective at removing free-product accumulation and high dissolved concentration impacted groundwater. This .is evidenced by the near absence of free-product in the Second Quarter 2003 (free-product measured at MW-13 at 0.02 foot) and the Complete absence of free-product in the Third Quarter 2003. In addition, dissolved-phase concentrations have shown significant decreasing trends in the pumped wells as well as in the downgradient perimeter wells. ! '1 E~C Remediation 12 Project Number 1~01BK03 November 15. 2003 5.4 Remedial RecommendatiOns Operation 5.4.1 Onsite Remedial System 'In order to convert the onsite system to a granular activated carbon (GAC) system an SJVAPCD ' Permit Amendment is required. As such, E2C prepared and submitted an Amendment Request to the SJVAPCD Permit To Operate (PTO) for conversion to a GAC system. Based on conversations with the SJVAPCD a change to the existing PTO would require notification of all students at .the school located approximately 1,000 feet north of the Site (machine location), This would entail a lengthy public notification process including public hearings. Therefore, it would most likely be several months before a GAC system could be started for the onsite area. As such and based on the above conclusions, E2C makes the following recommendation for onsite remedial operations: groundwater air sparging system operation onsite to a Iow flow Convert the oxygen injection system to oxygenate with no vapor extraction to enhance microbial degradation. The offsite system (see below in Section 5.4.2) will be used to capture hydrocarbons as they migrate downgradient area; to the of f site and · Continue to pump high concentration groundwater at MW-8. 5.4.2 Offsite Remedial System Based on the above concluSions, E2C makes the following recommendations for the offsite remedial operations: · Continue to pump groundwater, using a vacuum truck, from offsite wells MW-7, MW- 11 R, MW-12, and MW-13 on a roughly bi-weekly basis; [] Convert the offsite vapor extraction system to a GAC system; and [] After free-product thickness is reduced to 'sheen' only conditions restart air sparging operations. 6.0 CONCLUSIONS Based on the data presented in this report,.E~C makes the following conclusions: - Overall groundwater elevations increased 3.04 feet since the First Quarter 2003; . Increasing water table elevations observed in the Second and Third Quarters of each year are attributable to recharging conditions of the unlined canal that bounds the Site to the west; · Groundwater flow at the Site is generally southeast in the onsite area'and bends to the south-southeast in the offsite area. The onsite flow direction is predominately controlled by recharging from the canal, whereas the flow direction in the offsite area reverts to the regional flow direction (i.e., the further from the canal, the more predominate the regional groundwater pattern); · The groundwater gradient in the area between MW-2 (onsite and upgradient well) to MW-11R (offsite and downgradient) is significantly flatter (0.025-0.053 fi/fi) than the gradient calculated downgradient-of MW-11R (MW-11R to MW-15S) (0.14,0.15 ft/ft). · Wells MW-15D, MW-16, and MW-17D are generally dry, suggesting that groundwater flow along Fig Street is laterally discontinuous.. The water table has fluctuated at MW- 15S greater than seven (7) feet (reported dry in First Quarter 2002, contained 7.71 feet of water in Third Quarter 2003). This suggests that groundwater flow conditions in the vicinity of this well can fluctuate significantly over time; E~C Remediation ~ 13 Prqiect Number 1801BK05 November 15. 2003 · Benzene has been reported as non-detect for a minimum of three (3) consecutive quarters at all wells, except for MW-11R and MW-13, which had very Iow reported detections (<5 j~g/L) in the Third Quarter 2003; · The benzene portion of the groundwater plume appears to be confined to the area of wells MW-13 and MW-14; · Although benzene was reported at MW-18 in the Third Quarter 2002 (36 Izg/L) and in the Fourth Quarter 2002' (7.1 p,g/L), it has been reported as non-detect for three (3) consecutive quarters. Well MW-18 is screened in a deeper water-bearing zone than nearby wells MW15S and MW-17S; [] Significant concentrations of toluene, ethylbenzene and xylenes (total) continue to be reported in groundwater samples from wells MW-7 (offsite), MW-8 (onsite), MW-11R (offsite), and MW-12 (offsite); however, these show decreasing trends; · In general, fuel hydrocarbon .concentrations have decreased on- and off-Site, which is the result of the remedial operations (vapor extraction, groundwater air sparging, and groundwater pumping). Additionally, the air sparging has enhanced the natural attenuation processes through the addition of oxygen to the aquifer water (this supplies additional ion receptors, thus allowing enhanced microbial degradation of the fuel hydrocarbon compounds); · The downgradient edge of the groundwater plume appears to be defined based on the sporadic reported iow concentrations of fuel hYdrocarbons at MW-15S, MW-17S and MW-18; [] Influent concentrations to the onsite 'remediation system declined rapidly after start up indicating a "groundwater-only" contaminant plume. Cycling of the system on a three week off and one week on basis resulted in a significant increase in system influent concentration and hydrocarbon removal rate from the Third to .Fourth Quarters 2002; however, influent concentrations declined in the First Quarter 2003; · For a one-year period (April 2002 to April 2003), the onsite remediation system removed approximately 2,042 pounds of hydrocarbons from the subsurface; · Based cna ratio of electricity costs per unit of mass hydrocarbons removed, the operation of the VES machine for the onsite remedial operation was deemed 'economically unviable~ and the machine was shut down; however, air sparging operations continued; · The offsite thermal oxidizer VES' machine was connected and started for offsite remediation. After one week of operation it was apparent that operation of this machine was economically unviable due to a disproportionate ratio of fuel costs to mass of hydrocarbons removed. This machine was shut down and replaced with an electric oxidizer VIES machine; operation .of this machine was also determined to be economically unviable and it was demobilized from the Site; · After shutting down both the on- and off-site remedial systems a bi-weekly groundwater/free-product pumping operation was initiated. This operation has resulted in removal of 35,880 gallons of highly impacted groundwater from April through October 2003; · A permit modification was submitted to the SJVAPCD' to replace the offsite VES machine with a GAC system. The permit was approved and the construction of the GAC was authorized; and Remediation 14 Prelect Number i 80 ~ BKO$ November 15. 200,t will be brought on line in early 2004. The offsite It is anticipated that the of f site GAO groundwater air sparge system will also be restarted at that time. 7.0 RECOMMENDATIONS Based on the data presented above, and the conclusions from this data, E2C makes the following recommendations: [] Continue to conduct groundwater monitoring at the Site on a quarterly basis; · Analyze groundwater samples for BTEX and five fuel oxygenates using EPA Method 8260b and TPHg using EPA Method 8015M; · Discontinue use of the VES machine in the onsite area and convert operation of the GASS in the onsite area to a Iow flow oxygen injection system to oxygenate groundwater and enhance microbial degradation; · Continue groundwater pumping operations in both the onsite (Mw-8) and offsite (MW-7, MW-11R, MW-13, and MW-13) areas on a bi-weekly basis as groundwater pumping operations have effectively removed free-product and' decreased dissolved concentrations in groundwater; . ConVert the offsite vapor extraction portion of the remedial system to a GAC system; When the offsite GAC system is brought on line, restart the offsite GASS to oxygenate the groundwater and strip hydrocarbons. The offsite combined GAC/GASS system capture hydrocarbons from the sparged and oxygenated (GAC/GASS) will be used to groundwater as it migrates downgradient from the onsite area; and · Perform weekly operations and maintenance visits for the offsite GAC/GASS on a weekly basis. This will include carbon canister replenishment as necessary. Note: Based on conversations with the SJVAPCD it has been found that a lengthy public notification and hearing process would be required to convert the onsite remedial system to an alternative system. As such, E2C is recommending that only the onsite GASS continue when the offsite GAC/GASS commences operation. An Amendment to the PTO Request was submitted to the SJVAPCD to convert the offsite system to a GAC system. The Amendment Request was approved by the SJVAPCD in July 2003. The GAC system is currently in construction and will be mobilized to the Site when completed. It is anticipated that GAC startup will commence in early 2004. The offsite air sparging system will be restarted after free-product is reduced to 'sheen' Conditions. In addition, the onsite GASS operation will be converted to an oxygen injection system. ! ! I E2C Remediation 15 Prqiect Number 1001BK03 November 15, 2003 ' 8.0 LIMITATIONS AND REPORT CERTIFICATION E2C has prepared this Report in accordance with generally acCepted standards of care existing in California at this time. It shOuld be recognized that definition and evaluation of geologic conditions is a difficult and inexact science. Judgments leading to conclusions and recommendations are generally made with limited knowledge of surface conditions present. No warranty expreSsed or implied is made. This report has been prepared under the professional supervision of the registered professional whose seal and signature appear herein. The conclusions of this report are based solely on the Scope of Services outlined and the sources of information referenced in this. report. Any additional information that becomes available concerning the Site should be submitted to E2C so that our conclusions may be reviewed and modified, if necessary. This report was prepared for the sole use of Mr. & Mrs. Ki Chu Yi and/or agent(s) and the RWQCB. · Prepared By: ' ~/'" - ~Review/~;/1By: William. wson,~.G. #717~.~~~o~-~ ,,~,~~. C~p~'~win, R.G. #4779 Senior Geologist ~ /f_~,'-~//,,~x~¢~. ~/~¢_-~',-¢_,~ /f ~.~'~'/~',,~ ""P¥!p~¢t~l~ydrogeologist £,C Remediation 16 ~! P~qiect Number 1801BK03 November 15. 2003 ! FIGURES Figure 1 'Site Location Map I Figure 2 Site Plan Figure 3A. Second Quarter 2003 Groundwater Gradient Plot I Figure 3B Third Quarter 2003 Groundwater Gradient Plot Figure 4A Second Quarter 2003 Benzene Isoconcentration Plot i. Figure 4B Third Quarter 2'003 Benzene Isoconcentration Plot Figure 5A Second Quarter 2003 TPHg Isoconcentration Plot Figure 5B Third Quarter 2003 TPHg Isoconcentration Plot I Figure 6 TPHg Concentration Trends at MW-8 and MW-1 R 1 .I I I E2C Remediation Figures BRUNDAGE BRUNDAGE 8A, KERSFIEI. D EAST WHITE LAI~ E~C Remediation MR. FAST SERVICE .STATION FIGURE 600 BRUNDAGE LANE 5300 Woodmere Dr., Suite 105 Bakersfield, California 93313 BAKERSFIELD, CALIFORNIA 1 Telephone: (661) 831-6906 SITE LOCATION MAP Facsimile: /661) 831-6234 · iLEGEND I Monitoring Well Location ~ Shallow Moniioring Well Location I Abandoned Well Location APN: 011-031-05 ¥ Vapor Extraction Well Location '"F' Street [] Air Sparge Well Location I'--- BM Benchmark VE- M MW-6 MW-3 _W-1 ~ MW-5 Brundage Lane ~ --~ 92ft West; 22ft South · BRUNDAGE LANE MW-9 AS-4 MW-10 E: Mw-7 AS- VE-7 ? u.i MW-12 'MW-11 ] MW-14 011-041-11 AS-8 ri] VE-9 ~' 011-048-10 011-048r09 011-048-08 ~ 011-041-12 MW-15D Ni FIG STREET MW-i5S -~++ _~W'16 ..~ +MW-17D MW-17S I 401 I FREEWAY RIGHT-OF-WAY SCALE: 1 inch = 80 feet E2C Remediation' MR. FAST SERVICE STATION ~ 600 BRUNDAGE LANE FIGURE 5300 Woodmere Dr., Suite 105 BAKERSFIELD, CA. Bakersfield, California 93313 Telephone: (661) 831-6906 Facsimile: (661)831-6234 SITE PLAN 0 I 80 i ~ 40 ~ APN: 01 !-0'31-~5 . ~ SCALE: 1 inch = 80 feet ~ "T" :¢t?eet MW-2 ME-2 ~~~ ~ MW-8 ~RUN[ _ANE MW-7 ~ not honored LEGEND q ~ ~ o,,.o~,-1, Monitoring Well Location ? 335.00 Shallow Monitorin~ Woll kocation ~ ~0.00 ~ Do~p Monitorin~ Woll kocation o MW-17S MW-17D Abandoned Well Location , ' MW-15D ~ MW-16 Vapor Extraction Well Location -- ~ ~?-~-~ [~-~ -~.- ~-.~ ~ ~-~- -~-~- -~- ~-~ ~Groundwater E evaton Contour :: ~ ~: ~: ~ ;./ ~. ,~, -: ,~.~ ,¥ :, ~ ,~ ~, ~ :~ , ~. Groundwater Elevation (~ ~SL) E2C Remediation MR. FAST SERVICE STATION FIGURE 5300 Woodmere Dr., Suite 105 600 Brundage Lane Bakersfield, California 93313 Bakersfield, California Telephone: (661)831-6906 SECOND QUARTER 2003 3A Facsimile: (661)831-6234 GROUNDWATER GRADIENT PLOT 0 [ 80 I '~ ] 40 · APN: 01 t-031-05 SCALE: 1 inch = 80 feet MW-2 tf'''~"' ~ ii:'~ 92~t West: 22ti South ~ ~-~ ~ MW-9 MW-7 MW-10 .~ ~ ~ 011-041-01 '~! 01~-041-02 ~ i MW-111 ~ ~ I q'' ~ .~0 322.54 , not honored LEGEND Monitoring Well Location Shallow Monitoring Well Location Deep Monitoring Well Location Abandoned Well Location Vapor Extraction Well Location Benchmark ~ Groundwater Elevation Contour Groundwater Elevation (~ ~SL) E2C Remediation · MR. FAST SERVICE STATION FIGURE 600 Brundage Lane 5300 Woodmere Dr., Suite 105 Bakersfield, California Bakersfield, California 93313 Telephone: (661) 831-6906 THIRD QUARTER 2003 Facsimile: (661) 831-6234 ' .· GROUNDWATER GRADIENT PLOT 0 I 80 MW-5 ~ BF~U NiDAG~ LANE MWo9 MW-7 MW-10 ~ ~ 011-048-03 Monito~n~ Woll kocation , · . Shallow Monitorin~ Well kocation Deep Monitoring Well Location ' ' MW-lSD MW-16 MW-17S MW-17D Vapor Extraction Well Location Benchmark Groundwater Eleva{ion Contour (~ MSL) Groundwater Elevation (~ MSL) E2C RemecJiation 'MR. FAST SERVICE STATION FIGURE 5300 Woodmere Dr., Suite 105 600 Brundage Lane Bakersfield, California 93313 Bakersfield, California Telephone: (661) S31-6906 SECOND QUARTER 2003 GROUNDWATER ' 4A Facsimile: (661) 831-6234 BENZENE ISOCONCENTRATION PLOT 0 8O " ~ ./,PN: 0'! 1-03'i-05 SCALE: 1 inch = 80 feet ,., ~-1 ~;. -~ VE-4-- MW-9 MW-7 MW- i 0 ..........................~-tt~-- i ~ . ~ MW-12 ND MW-llR .11 ~ MW-14 ~:~ LEGEND Monitoring Well Location Shallow Monitorin~ Wall kocation MW-15D MW.16 MW-17S MW-17D Deep Monitoring Well Location Benchmark i,,~1 Groundwater Elevation Contour 6roundwater Elevation E2C Remediation .. MR. FAST SERVICE STATION FIGURE 600 Brundage Lane 5300 Woodmere Dr., Suite 105 Bakersfield, California Bakersfield, California 93313 Telephone: (661)831-6906 THIRD QUARTER 2003 GROUNDWATER 4B . Facsimile: (661) 831-6234 BENZENE ISOCONCENTRATION PLOT 0 [ 80 SCALE: 1 inch = 80 feet MW-2 !il ~-' 1 .., .... BM Elevation West; 22¢t NDAGE LAb MW-9 -4 '~ 10 , Ol l~-os MW-11R 1 LEGEN~ o Monitoring Well LOcation Shallow Monitoring Well Location m~-o~-o~ Deep Monitoring Well Location MW-lSD MW-16 MW-17S MW-lTD Abandoned Well Location ;~:~ Vapor Extraction Well Location Benchmark TPHg Concentration in u~L E2C Remediation MR. FAST SERVICE STATION FIGU RE 530'0 Woodmere Dr., Suite 105 600 arundage Lane Bakersfield, California 93313 Bakersfield, California Telephone: (661)831-6906 .SECOND QUARTER 2003 GROUNDWATER 5A Facsimile: (661) 831-6234 TPHg ISOCONCENTRATION PLOT o I 6o SCALE: 1 inch = 80 feet MW-4 MW-6 MW-5 ~ ~ Isoconcentration MW-lO 011-041-01 011'-041-02 - i MW-14 _+_ Monito.ng we, Loca,ion Shallow Monitoring Well Location Deep Monitoring Well Location MW-15D MW-16. MW-17S MW-17D Abandoned Well Location Vapor Extraction Well Location BM Benchmark FREEWAY R!GHT-OF-.WAY ~ TPHg Concentration in u¢ E2C Remediation, LLC MR. FAST SERVICE STATION FIGURE 600 Brundage Lane 5300 Woodmere Or., Suite 105 Bakersfield, California ~e~s,~, Ca,~orn~ ~ Telephone: (661) 83~-6906 THIRD QUARTER 2003 GROUNDWATER Facsimile: (66~) 83~-6234 TPHg ISOCONCENTRATION PLOT m m m m m m m m' m m mm ~ m m ,m m m Project Number 1801BK03 November 15, 2003 Figure 6 ,.TPHg Concentration Trends at MW-8 and MW-11R 120,000 100,000 -~ MW-8 --m-- MW-11R. 80,000 ..................................................... 60,000 40,000 - 20,000 dun-O1 $op-O1 Doc-O1 Mar-02 dun-02 Sop-02 Doc-02 Mar-03 dun-03 ~onth.~ear E2C Remediation Figure 6 Project Number 180i BK0~ N~)v~m/)¢r 15, 2003 TABLES Table lA Summary of Second Quarter 2003 Groundwater Monitoring Data Table lB Summary of Third Quarter 2003 Groundwater Monitoring Data Table 2 Summary of Historical Groundwater Elevation Data Table 3 Summary of Historical Groundwater Analytical Data Table 4 Summary of VES Monitoring Data Table5 Summary of Onsite Hydrocarbon Mass Removed using VE/GASS (based on influent concentrations) Table6 Summary of Onsite Hydrocarbon Mass Removed using VE/GASS (based on %LEL) Table7 Summary of Offsite Hydrocarbon Mass Removed using VE/GASS (based on influent concentrations) Table 8 Summary of On- and Off-Site Groundwater Pumping E2C Rernediation Tables Project Number 1801BK03 November 15, 2003 TABLE lA SUMMARY OF SECOND QUARTER 2003 GROUNDWATER MONITORING DATA Mr'. Fast Service Station 600 Brundage Lane, Bakersfield, California June 10, 2003 DEPTH TO TOC GW I WELLID DATE WATER F'P' ELEV. ELEV. B T E X TPHg TBA MtBE DIPE ETBE TAME (feet BTOC) (feet) (feet MSL) (feet MSL) pg/L MW-1 6/10/03 42.44 ' 394.03 351.59 nd<0.5 nd<0.5 8.68 98.4 nd<50 nd<2.5 nd<0.5 nd<0.5 nd<0.5 nd<O 5 W-3 6/10/03 42.78 394.64 351.86 I -9 6110103' 43.41 , 394 05 350.64 nd<0.5 nd<0.5 1 17 337 - 0 6/10103 44.90 ' 392.91 348.01 nd<0.5 I 53.0 1 140 2,890 175 .nd<2.5 nd<0.5 nd<0 5 nd<0.5 J nd<O~ MW-11 ~e'li'taken 'out of service L Repiac~ byMW-1 'i'R Well' taken'out 0:[ .~-ervi-(i'e ~ Re'piaced by Mw-i'iR, then c0'~Verted in-t0 VE wel~ MW-llR' 6)10-/-0~3'j' ,~6i20 ' "" ~391-.33 .... 34~5. i3 nd<01~ 257~0 ~1140 6,'4~(J ....... ~i~85 r~d<~.5 nd~.5 'nd<0.5 'nd<0~ ~d<0.5 dup 6/10103 nd<0.5 nd<0.5 nd<0 5 nd<0 5 nd<50 nd<2 5 nd<0 5 I ........ I : . I ....... :_ J .... . I - I : I nd<0.5 nd<0 5 nd<O 5 MW-15D .6/17(0_3 .... 'd~ 390.72 NSWD MW-15S .. .6_/! 0/0_3 69.79 ...... _3~0:7_5. 320..96 nd~0',.~- n~l<-0'.~" nd<0,.5- -~qd~)~5- .... '7~'2 nd<25 : .. nde0.5 [ nd<05 ...... n-d~'0'5' Mwi! 6 6/!0/03 ......... ~.W ............. 3~90_._9_7- ........... NSWD ' Notes: 3uplicate of MW-14 labeled as MW-19 on Chain-of-Custody ~esults in micrograms per liter (pg/L) = parts per billion (ppb) MtBE = Methyl tertiary-Butyl Ether 3 = Benzene NA = Not analyzed BTOC = Below Top of Casing nd = Below Practical Quantitation Limits: BTEX-0.5 #g/L, TPHg-50 ,ug/L, and MtBE/DIPFJETBE/TAME-0.5 ,ug/L; TBA-2.5 ,ug/L DIPE = Diisopropyl Ether NSWD = Not Sampled; well dry E = Ethylbenzene NSFP = Not Sampled, free-product present ETBE = Ethyl Tertiary Butyl Ether T = Toluene F-P = Free-product Thickness TAME = Tertiary Amyl Methyl Ether GW = Groundwater TBA = Tertiary Butyl Alcohol GW Elevation corrected for Free Product using formula: GW Elev = Reference Elev -[Depth to Water - (Product Thickness)(0.8)] E2C Remediation ' Table 1A-1 Project Number 1801BK03 November 15, 2003 TP~BLE 1B SUMMARY OF THIRD QUARTER 2003 GROUNDWATER MONITORING DATA Mr. Fast Service Station 600 Brundage Lane, Bakersfield, California 6/10/03 and 8/5-8/6103 DEPYHTO ~ Toe GW I I E' l X I TPHg l' TBA I MtBEI DIPE l ETBE '1 TAME WELL ID DATE WATER F-P B T ELEV. ELEV. . ..................................... (feet BTOC) (feet) (feet MSL) (feet MSL) #g/L M_W;! ....... -8(5/0_3._ 4!.:_!8 ~.~o_3_ ...... 3,~2_.t~5 .n___d..%Ot~ ..... n_d~<O_.~ .......... 5 76 ........ 4_,_5. 6_o_ ...... .40. ...... ~d<_O_:5~ ........ ~ ~ '~ .... nd<0 5 r~d~0.:5_. M_W_-_2_ ...... _8_/5/9_3_ ........ 40:-85' 3_9.5_.__o_1 .... _3~5~:_1...6 .... n_d__<._O_._5__ _nd~<_o_-_5 ...... n~l~0:,~ nd'~0~.5 ...... _n"d.~_59 ..... 0~2_:.5_ .... nd~0:~ ..... ~n.d~?_5. _ nd<0..5 n.d?P_-5 M...W;3 ...... 8/5_/.~.3. ....... 41._67 3_9..~:64 ..... ~52_._.9'~ .... q.d_~9.._5 .... pd_<.0_.~ _ _ .Qd__<.O.~5 nd<9:5 ].§~ ...... nd_<.2.5 . _nde0_..5 .... nd_<_..05, nd<0.5 nde0_:5_- ~W-;4- 18-/~5/-~)-3 ...... 4!.'92 394-'-!~ ..... ~5~2-:2~ ...... nd~0'5 -..Pd<----O-.-5 .... -n._~!<0-5 nd<O,_5 ..... n_~!<_50 _.. ndE2:5 nde0._5 n(~..~ .nd<05 nd<O.5 ~W:~ 8/5(0~ ..... 42:6] 393.43 350.82 nd<O.5 nd<0.5 nd<0.5 nd<0.5 nd<50 nd<2.5 nd<0.5 nd<0.5 nd<0.5 nd<0.5 .-MW:6_ ..... 8~5!0~ ........40'23. 39~.-~6 ..... 3~53;~3 ..... nd_<0:5 ..... _nd<~O_._5_ _~cl__~.O..5 . nd<O:5 ...... n_~ff_50_ .... n_d_~2:_5_ . nd~_O:_~ ..... __n.~0._5.. nde<?5 nd<O.5 MW:7 .... _8/~(03 43:20 393:6.3- .... -3-50'4-3 nd<O:~ ..... 3.:°_ 910 149:0 ....... · n.d_.~_5.~ ..... n_d:<2:5' n~.<_0.5 ~i~0:5 .nde0.5 nd<O.5 MW-8 8/5/03 42.29 393~9~ .... ~5].._66 nd<_~:5_ ..... _8_,4_50__ 2,430 9,630 6,060 nd<2.5 nde0-5 n.d~9._5 nd<0.5 nd~g~ ~-~-9: 8)5)~)3-' '421~4 394.05 351.41 nd<0.5 nd<O.5 nd<0.5 nd<0.5 ...... ~ .... ~d~i5 nd<0.5 nd<O 5 nd<0.5 nd<O.5 Mi~/:'i° i!' 8/5/0:~'i -4~.88 392~9i 349~0~ nd<of5 ..... r~d-~0.~ ...... 2' 4.1 ..... r~d<5(~ ~ nd~2'i5 nd~'0~5 .... . nd-~-°.5' nd<0.5 nd<O.~ MW-11 ' Well taken Out of Service- Replaced"i~y MW-I-~ R ................. Well taken out of service- R~P'la~e~l"by r~w:;i I R, then c~nw~ed 'ini° vE well MW-11R 8/5/03 44.39 3'9'-~:~" i ~94 ' 112 i2'1'1-~'0' ....... i,8~)0 6,720 ":~0 ........ r~'d<2~5 nd<05' '-~i~0.5'' nd'<0 5 I nd<01,~" ~'~':1-2-' .... ~)5J0-~-'! ...... ~'6-3' ' :~-06 ........ 34-8'i~)-~ .... 'nde0.5 ~i-7 ........ 700 .... i i 0'0 ..... ~d-;5~--'l--' ~<~ ~ nd-<-0~-~-- i- -~'~)-'~ .... r~-~ ~ ' Mw-13 8/5/03 .49.49 392.00 342.51 5.0 535 730 4,708 ; 4,18o nd<2.5 nd<O.5 nd<O.5 nd<0.5 nd<O.5 :l_u.p ~/5/0__3 ............................... 3:0 ........... ~O0 ........ 1~_.6~O.. 3,180 1,370 ' nd<2.5 nd<0.5 nd<O 5 . nd<0.5 nd<0.5 M~.-14. 8/_5[~8 ~_9_.!1 391.6_5 ._32_.2.-.~54. 9d.~°'5 :__r~d ~<9'~5 4:4 9.0-'-i- ....... r~t-<~'0- ..... n~'~215 ~1'~(~i~ ..... nde'0.5' nd<O.5 n~l<Oi5 .... ..M_~:! ..5_D 8/.5/~°3 .......... d~ 390.72 . NSWD .... "' Mw: .ss 8/5/0 671....... ........ ,~:~' I 7.0 M__W:!_6_ ....... 8/_510~. ......... d_ry .... 390.97 NSWD ~__W.. :!.~D. _8/5!~.3_ ......... _d__ry_ ~_9. 0_.91_ .................... NSWD M_W_-_I_7_S 8/_5/9._3 5_9:~9 . 39_0:74 331.15 r~'d~0~ .... ~-d-~- --~'~'<0.5 . nd<01~- MW-18 8~5~03 114.81 ................ n~l~51-~-' -~l~-~- ....... ~-~5.'5 nd<0~5'- Notes: Duplicate of MW-13 labeled as MW-19 on Chain-of-Custody Results i0 micrograms per liter (,ug/L) = parts pe~; billion (ppb) MtBE = Methyl tertiary-Butyl Ether B = Benzene NA = Not analyzed BTOC = Below Top of Casing nd = Below Practical Quantitation Limits: BTEX-0.5 #g/L, TPHg-50 ~'g/L, and MtBE/DIPE/ETBE/TAME-0.5 ,ug/L; TBA-2.5 ,ug/L DIPE = Diisopropyl Ether NSWD = Not Sampled; well dry E= Ethylbenzene NSFP = Not Sampled, free-product present ETBE = Ethyl Tertiary Butyl Ether T = Toluene F-P = Free-Product Thickness TAME = Tertiary Amyl Methyl Ether GW = Groundwater TBA = Tertiary Butyl Alcohol GW Elevation corrected for Free Product using formula: GW Elev = Reference Elev -[Depth to Water - (Product Thickness)(0.8)] E2C Remediation - Tab/e 1B-1 I Project Number 1801BK03 November 15, 200,t TABLE 2 I SUMMARY OF HISTORICAL GROUNDWATER ELEVATION DATA Mr. Fast Service StatiOn 600 Brundage Lane, Bakersfield, CalifOrnia I WELL ID DATE TOC ELEV. ELEVATION TOTAL DEPTH TO DEPTH GROUNDWATEF GW ELEV. CHANGE (feet MSL) (feet BTOC) (feet BTOC) (feet MSL) (feet) I ,, 7/20/95 NM? 4/5/96 NM? 3/27/97 NM? I .~0/20(98 1/11/99 NM? .... 5)i2/99 ' N/S ............ ~5:i3 .... I 8/20/99 ....... ~0.96 1 2/7/99 40.96 3/30/00 46.35 I 7/3/00 NM? MW-1 1/3/01 51.73 43.28 350.75 I 8/_6(0!. 51.80 40.32 353.71- 1.83 ~.! 8(_02 . .52.12 45.80 348.23 -3.48 I ..... 5/!~/02 394.03 52.10 41.50 352.53 4.30 . 1.2/5/02 49.98 43.18 350.85 -3100 2/24/03 49.99 44.10 349.93 -0.92 . .6/!0/03 . 52.00 42.44 ,. 351.59 1.66 NM? ' 3/27/97 ............ -NM? ......... ..... 10(20/98 4 ..... -44'3~ ......... !/99 5/12/99 42.76 ENK 8/20/99 38.61 I ! 0(6/99 ........ U/A 3/30/00 45.19 i 7/3/00 42.Ol MW-2 .... ~/~/~! 54.29 43.38 351.63 6/4/01 54.29 41.82 353.19 1.56 . I 8(6!0! _54:~9 ................ ~.0.12 ........ 354:8_9 1.70 1 2/6/01 54.29 42.42 352.59 -2.30 2/18/02 54.24 '~'5.49 349.52 ' -3.07 i' '5~i.'~i02 395,01 '- 541'!2 .......... .... ~41:02 353,99 4,47 I 8(2.!/02 54,10 86 354'i 1-5 O, 1,6 40. 12/5/02 ~41i0 . ' ........ ~3,09 3511'92 -2,23 6(!.9/03 54.03 42.16 -i'.74 352.85 8/5/03 - 54,0~) ........40,85 35~'i6 i,3i ' IE2C Remediation Table 2-1 Project NUmber 1801BK03 November 15, 2003' TABLE 2 SUMMARY OF HISTORICAL GROUNDWATER ELEVATION DATA Mr. Fast Service Station 600 Brund'age Lane, Bakersfield, California WELL ID DATE TOC ELEV. TOTAL DEPTH TO ELEVATION DEPTH GROUNDWATER GW ELEV. CHANGE (feet MSL) (feet BTOC) (feet BTOC) (feet MSL) (feet) 4/5/96 NM? 3/27/97 N'M? 10/20/98 45.46 !(1.1-(99 45-43 5/12/99 44.21 ........ ENK 8/20/99 ........ 7~9.92 ........... !0/6/99 N/A !2/7/99 42.45 3/30/00 46.44 7/3/00 43.05 MW-3 1/3/01 54'.80 44.21 350:43 6/4/01 54.$4 42.82 351.82 1.39 _8./._6~01- 54.84 41.16 353.48 1.66 , 1.2/6/01 5/16/02 54.80 41 ~54 353.10 4.78 .......... 394.64 .1.2/5/02 54.82 43.46 .351.18 -2.80 2/24/03 54.80 44.62 350.02. -1.16 6/10/03 ..... 54:80 ......... 42.78 351,.8_6 1.84 8/5/03 54.85 41.67 352.97 1.11 N/A · ' 3/27/97 N/A 10/20/98 46.17 .~(~_1_(99 45.99 5/12/99 .......... -~5.'1~ ........ ENK ........ . .... 8/2(~!99 . 40.74 !0/6/99 . N/A. 12/7/99 42.65 3/30/00 45.82 W3/O0 43.10 MW-4 1./3/_01 ....... 54:~9 ................ 4.3:80 35~-34 6/4/01 · 54.12 43.08 351.06 0.72 8/6~91 .....54'_!2 .......... 4!.22 35_2'. _:_9__2 !.'86 · !2/6/01, , 54.14 42.80 351.34 -1.58 2/18/02 5'41'14 45.98 348.16 ~ -3.18 5/16/02 394.14 54.!5 ....... _4.2:54 35.!.60 ....... 3.44 8/21/02 54.10 40.82 353.32 1.72 i 2/5/02 ' 54.08 ...... 43170 -' 350.44 -2.88 2/24/03 53.92 44.78 349.36 -1,08 8/5/03 54.20 41.92 352.22 2.43 IE2C Remediation , · Table 2-2 · I Project Number 1801BK03 November 15, 2003 TABLE 2 I SUMMARY OF HISTORICAL GROUNDWATER ELEVATION DATA Mr. Fast Service Station 600 Brundage Lane, Bakersfield, California I WELL ID DATE TOC ELEV. TOTAL DEPTH TO ELEVATION DEPTH GROUNDWATEF GW ELEV. CHANGE (feet MSL) (feet BTOC) (feet BTOC) (feet MSL) (feet) I 3/27/97 N/A 10/20/98 .... ~5'i'1'45' 1/11/99 51.31 ~/1.2/9.9 ENK ................ 8/20/99 42.77 12/7/99 43.99 7/3/00 43.89 · 1/3/01 57.00 44.12 349.31 I MW-5 6/4/01 ~A0 4~3:98 ......... 34~914'5 01i4-' ' 8!6/01 57,40 42,10 351,33'- 1~88 12/6/01 .... 57.z~0 ............ 43116 3501~ -1.06 i ...~!_8/02 57.40 -46.48 3461~5 ' -3.32 · 5-¢!6/°2- 393.43 ...... ~7.44'- ........ ~4'2192 350;~51 3.56 ..... 8~2'!~_2 57.38 41.59 351.84 1.33 i _ _!..2J._~_/02 _ . 57.36 44~02 349.41 -2.43 2/24/03 57.30 45.32 348.11 -1.30 _ .6(!.0/03. 57.40 48.82 344.61 -3.50 8/5/03 57.29 42.61 350.82 6.21 3/27/97 N/A 10/20/98 45.70 .. !./1.!/99 45.63 · 5/12/99 44.10 ................. ENK ............................. 8/20/99 39.94 3/30/00 46.61 7/3/00 41.58 I !/3(0! ...... 53:.2Q ................. _4_3. :0_7 350:69_ MW-6 . ·6/4(01 . 53,06 41,30 352,46 1,77 8/6/01 "~3.:i6 ........... ~ ...... ~'9.75 3~Zi';~1 ........ 1:55 I 12Z6/01 . . 53.18 ..... 42.14 351.62 -2.39 2/~ 8~02 . 53.10 45.18 3,48.58 -3.04 · - · 5(-!.6~02 393.76 i__5.3'i! ~.'- ................... _4_!.23 352~53 3.95 8/21/02 53.10 39.30 354.46 1.93 2/24/03 52.92 43.16 350.60 -1.11 i 6/!0/03 52,90 41,26 352,50 1,90 IE2C Remediation Table 2-3. Project Number 1801BK03 November 15, 2003 TABLE 2 SUMMARY OF HISTORICAL GROUNDWATER ELEVATION DATA Mr. Fast Service Station 600 Brundage Lane, Bakersfield, California WELL ID DATE TOC ELEV. TOTAL DEPTH TO ELEVATION DEPTH GROUNDWATEr: GW ELEV. CHANGE (feet MSL) (feet BTOC) (feet BTOC) (feet MSL) (feet) 3/27/97 _4.9:50 10/20/98 49.34 1/11/99 ' 53.16 · . 5/!2/99. · ENK ........ 4--.~'5! _ 8/2_0./99 . 45.13 12/7/99 ............. ~5'.13 . .3~30/00 51.27 7/3/00 ................. -I~/A' 1/3/01 52.80 45.08 348.55 MW-7 6/4/01 53.72 44.52 349';'i'1 .... 0158 _8,/.6~0! ....... .53.72 _4_2:78 350~85 ~1 :~4.' .. 12/7/01 53.72 44.32 349.31 - 1.54 2/79~02 53.70 47.23 346.40 -2.91 5!! 6/02 393.63 .....53.68. 43.31 350.32 3.92 8/21/02 53.71 ........ ~42120 ..... 351.4'3 1111' 12/5/02 53.70 44.48 349.15 -2.28 ~24/03 53.68 45.94 347.69 -1.46 ' 6~.0~03~ 53.65 44.05 349.58 1.89 8/5/03 53.41 43.20 350.43 0.85 7/3/00 ENK 43.42 1/3/01 52.80 43.90 350.05 6/_4.,/01 50.90 43.36 350.59 0.54 .... __8/6/0! - .... 50.90 ...... : ....................................................... 4_!_.'.58~ ...... 352:87. ....... !.78 ..... !.~6/0! 50.90 43.18 350.77 -1.60 .2/_!_8~02. ' ....... -50:'92 '-. ~' -3.04 46.22 347.73 MW-8 .... 5/-1-6-/--0--2 393.95 ~-~---ii~-50:90~.~i.iii"'~' ~i.i__~ii.-~--~_-'2-~621..ii 'i' ." 'J3~!ii~3 i ,'. ,3.~0"' 8/_2-_!!02 50.89' 41.06 352.89 1.56 _ !.._2/_5_/.02 ........ 50.87- ....... _4_3:95 ....... 35?:?0 -2.89 .... N2_4/03 50.85 44.96 348.67 -1.33 0/10/03 .......... 8!5'/03 50.61 . i."ii-~-'~ ._-.~'.~.~199 350:.67 ,0.38'.- 7/3/00 EN K 44.02 i ~1/3_/01 ..... 5!.:6.0__.. . 45.14_ , 3_4_8:9~! ._ ....... 6/4_/0~! ...... 50.80 43:52 350.53 1.62 __ '_8.(6_/~ 50.82 42.21 351.84 1.31 . .'1_2/6,/01 50.72 44.24 349.81 -2.03 2/18_/.02 MW-9 .... ~-/- !-6-/02 ....394.05 ...... -50:6~ ...............~':i-:92 3~;"i"3 ........... 5;02 8/21/02 50.69 41.61 352.44 0.31 _1N_5/02 50.63 44.50 349.55 -2.89 2/. 24_/0.3 -.. 50.48 45.54 348.51 -1.04 . .6(_1_0/03 '_, 50.60 43.41 ,. 350.64 2.13 __ 8,/5~0~3 _ 50.54 42.64 35:[i~-1 0.7~ , I E2C Remediation ' Table 2-4 Project Number 1801BK03 November 15, 200,3 TABLE 2 SUMMARY OF HISTORICAL GROUNDWATER ELEVATION DATA Mr. Fast Service Station 600 BrUndage Lane, Bakersfield, California WELL ID DATE TOC ELEV. ELEVATION TOTAL DEPTH TO DEPTH GROUNDWATER GW ELEV. CHANGE ' (feet MSL) (feet BTOC) (feet BTOC) (feet MSL) (feet) 7/3/00 EN K 45.51 1/3/01 52.50 45.28 347.63 6/4/01 i ',5~13~- ................. ~.34 ......... ~4'~i-~7 ,'0.06 8/6/01 52.34 43.36 349.55 1.98 1 _2/6/01 .. - 5213,4 ............... ~41 i~4 ~8.~7 ........ 2/?8(02 _ 52.32 47.12 345.79 -2.98 · MW-10 - 5/!6/-02 392.91 .... :~.5.2:20 ~:94 .... 3z~7_.97. 2.18 .._8/_2:_1_/-02. 52.00 42'.53 350.38 2.41 12/5/02 52.00 44.88 348.03 2/2_4._/03 51.88 46.30 346.61 -1142 6/1_0./03 ._ - ..... 51 i~:i- ........... ~ ..... -~,-~.i'90 ...... -' 3~,8.'0:i 1.40 ~/5/03 _ 51.97 43.88 '3~9.0§ 1~02 I MW-11 1/3/01 391.35 48.30 44.92 346.43 WELL SILTED UP, CONVERTED INTO VAPOR EXTRACTION WELL 6/-~./-.0-.! ......... 6~'52 ............ 54:7.6_ 336.46 ...... 8_/_6~q! ...... 391.22 63.52 47.65 ' 34~.~7' .... 7.11 12/7/01 63.52 45.08 346.14 2.57 63.40 54.63 336.59 ............................................................... 2/18/02 .9.55' 5/22/02 .. 63.40 48.68 342.54 5.95 MW-11R 8/21/02 ...... (~3.3~ ............43:~- 348t'~0 5:6'6 !.2/-5/-~2 · 391.33 -' 2/24/03 66.32 52.84 338.38 -6.02 ' ......... 6-/i-(~)'3 63.20 46.20 ........................................ 345.02 6.64 8/5/03 ...... 6311'~ ..... ': ............................................. , _4_4: .3_ .9- ............................... 346.83 'i ~:i"' 6/4/01 ._ NMFP NMFP NMFP .8_/6/_0_.! .... 392.01 _NMF_P.__L ._N_M_ Fp_ NMFP_ · 12/7/01 44.78 347.23 2/19/02 51.65 340.41 -6.87 5/2.2/02` ............... 43.71 348.35 7.94 MW-12 8/-2!/02 64.89 ......... --4-2~i~ ....... 349~32; ..... 0.97 ! 2/5/-02 ' 392.06 ..... 64..88 ........ . 45.02 ....... 347.04 -2.28 ..2/2.~/-~3 64.87 . 46.48 3_4_5.5.8 -i.46 .. 6/_1_0_/__0_3 64:.! 8 .................... ~4.6~. 347.46 i188' · . 8/5/03 64.05 44.03 348.03 0.57 I E2C Remediation Table 2-5 Project Number 1801BK03 November 15, 2003 TABLE 2 I SUMMARY OF HISTORICAL GROUNDWATER ELEVATION DATA Mr. Fast Service Station 600 Brundage Lane, Bakersfield, California m WELL ID DATE TOC ELEV. TOTAL DEPTH TO ELEVATION DEPTH GROUNDWATER GW ELEV. CHANGE - (feet MSL) (feet BTOC) (feet BTOC) (feet MSL) (feet) m 6/4~01 65.40 58.10 .334.55 8/6/01 392.65 ....... ~.40 ........................ ~(~'1'97 34'~-~68 ....... 7. i 3 12/7/01 65.38 49.52 343.13 1.45 m ~!.9/02 ~5:38_ _.57:-4~) 334.57 -7.91 5/22/02 66.10 58~70 333.30 -1.27, MW-13 8/2?0.2 65.38 47.65 344.35 1 i.05 m !2/5/02 "-6'5.36-' ~ ' . ....... 48.70 ~ 343130 -1.05 392.OO 2/24/03 65.40 56.4~ 335.60 -7.70 6/10/03 NM'F¢ NMFP NMFP m 8/5/03 ....... 342'5~ 6.91 6/4/01 77.00 69.88 321.99 I 8/6/01 391.87 76.90 68.41 323.46 1.47 12/7/01 76.92 68.50 323.37 -0.09 2/18/02 76.98 69.30 322.35 -0.80 m .... 5_/2.2/02 ....... .~7:48_ ..... 69.50 322.15 -0.20 MW-14 . 8(2_1.(02 ....... Z8:96_ .................. 6_8._70._ 3_~.2_:9._5_ 0..8_.0._ .]2/5/02 .... 391.65 ...... 7.~i.9__~ ......... 68.33 . _ 3_2_.8:.3_2_ 0.37 . ~48 8/5/03 Y6.Y9 69.11 322.54 0.06 I ...... .......... 8.7_:~_-4_ ...................... d~ _'F.,F".7., !.,_2/7_. /0! MW-lSD 1 2/5_/0_2 390.72 ....... 87_.! 8 ~._W_ '7'7";7 I--2/24~03 ....8-7":24 ........ dry .... ' ....... .................... 8~5~03 ' ................................. 87.15 m .... 12/7/Ol ....... 73.2~ ............. ~o:7.2_ ........... 3.2.0.0.3 ... _2/.1.8/o2 ........ .7.3.30- ................ d~y ..... - ....... 5/22/02 73.22 70.00 3~).~5 ..... ' m 8/2!/o2 7.~:25 ............. 6_9:~.6_ .... ~_2!.:49 . 0.74 MW-15S 12/~_/02..' 390.75 ......... 73'!~ 69:7_! ....... ._3.~ !_~_0_4_ :~)._4...5 2/24/03 73.30 71.92 318.83 -2.21 m 8./__5./03 ...... 73:2_4 .................... _6_5:_7~ ............ .3_._2_.5:0_4 .............. '. 4-08 m I E2C Remediation . Table 2-6 Project Number 1801BK05 November 15, 2003 TABLE 2 SUMMARY OF HISTORICAL GROUNDWATER ELEVATION DATA .Mr. Fast Service Station 600 Brundage Lane, Bakersfield, California TOTAL DEPTH TO ELEVATION WELL ID DATE TOC ELEV. DEPTH GROUNDWATER GW ELEV. CHANGE (feet MSL) (feet BTOC)' (feet BTOC) (feet MSL) (feet) 12J7/0! 79.10 dry ........ .... 2/18/02 79.12 dry ........ 5/__2__2.(_.02. _ 78.55 dry ......... 8/~!(02 MW-16 12/5/02 390.97 79.00 dry ........ 2/24/_03- .... 79.02 dry ........ ..... .8(5-/03 ................ ~9._00 .................... _~... - ....... !__ .2./_7___(~! .... 9!:26 ........................ ~_ry ....... :~_'.::::: 2(!.8(0.2_ ......... 9.!.'_27_ ...... 5_(_2_2(02 .... 9! .~0_ ................... dr)/ T.:'2;_'_T_: , ...... 8(.2-!.(02 ........... _9.~!_:0~ .................... _d~ ,;.:7'.7..7 .......... MW-17D _1~5(_0.2 390.91 .... 6(!.0J_0.3 ........... ...... 8/5_/_0_3 12/7/01 81.02 57.14 333.60 .2/!.-8/-02 ...... 79?8 ..................... 6~ '50 ...... 32?:24 '4-36 5/22/02 79.65 73.98 316.76 -12.48 8/21/02 79.65 57.93 332.81 16.05 MW-17S ..... !2/5_/~.2_ .... 390.74 __ _7~;_6._5___~ ......... _5_7~:8_2' ........ 332.92 0.11 2/24/03 79.60 60.50 330.24 -2.68 6/10/03 79.70 60.48 330.26 0.02 ..... 8/5_/~3_· ........ 7_9:62 .................... _59.59 33! :.!5 0-89 8/21/02 118.80 114.56 !.~5_/02' 118.75 114.40 0.16 MW-la .~4/_Q3 ..... - 6/10/03 118.80 115.20 -0,11 .... 8/5(.0_.3- ...... 118.46 114.81 0.39 Notes: Elev, = Elevation ' avg. 2nd/03 gw elev. Chg. 1,37 ENK = Elevation not known prior to January 2001 avg, 3rd/03 gw elev, Chg, 1,67 GW = Groundwater NMFP = Not measured, greater than 30" of free-product N/S = Not surveyed (?) Top of Casing Elevations are measured at the north side of casing and referenced to mean sea level Groundwater Elevations- are not corrected for product thickness before 01/03/01 Groundwater elevations after 01/03/01 based Benchmark canal are on on abutment I E2C Remediation , · Table 2-7 ' Project Number 1801BK03 November 15, 200,'~ TABLE 3 : - SUMMARY OF HISTORICAL GROUNDWATER ANALYTICAL DATA MR. FAST SERVICE STATION 600 Brundage Lane, Bakersfield, California [ ........................................................ ................. ' ................... : ..................................... .................................... ......................... I ...................... I ...................... t ..................... I 7/20/95 4,200 113,000 ND 40,000 329,000 NA NA NA NA NA NA ..... 4~)96' ' NA ' '"-N~ .............. ~IA ..... N-A ............ NA ~'~ ........ N,~ ........... NA ........ N~- NA NA ...... ..... ~)2~8~ .... .1~0' . 57;660- ..... 5,0°o ': 3-6;'000 ...... 2-~0;0'60 iqT~ ............. ~- ..... 22 000; ...... N'A NA ..0/_20(98 NSFP __N_S.F_? ........ NSFP NSFp ..... , .... _N~.EP ....... I~_A. ! ....... _N._A ...... NA NA NA ' I~ 1/11/99 NSFP NSFP NSFP NSFP NSFP NA NA ' NA i;q'A' NA '~iA .... $~'2)~)9 NSFP ~'§-1~- ............. i~S'FP ..... ~'§-Fi5 .......... -~ ~-F-P .... ~i~, ......... Iq'~ ........ NA N~A- NA "N/~ ....... 8/~0(99.. NSFP NSFP NSFP NSFP NSFP NA NA NA NA NA "'lqA 12/7/99 · <5600 35,400 62,400 454,000 N/A NA NA <3'8,000 .... NA' ! NA NA '3J;~)~0'(:J ' N~Fp ..... ~1-~ NS'~P ' 'N'S-i~P .... N~'F'~' NA · NA NA . NA NA 1/3/01 (Dup) nd<20 710 1,400 18.3 17,930 NA nd<200 nd<20 nd<20 nd<20 nd<20 6/4/o~ nd<50;0 ~'5 ............ ~-;~i0 .... :"~;55~ .......... ~;~0 ...... ~-~- ...... ~-~2-5-&'5-' -~;~0';6 ..... ~;~:~ nd<50 0 ~O-;~L5 8/6/01 nd<50.0 585 830 7 760 33 500 NA nd<250.0 nd<50.0 nd<50.0 nd<50 0 nd<50 0 12/6/01 nd<0.5 nd<0.5 230 5,280 73,890 NA nd<2.5 nd<0.5 nd<0.5 nd<0.5 nd<0.5 5/16/02 nd<0.5 3.5 0.6 183 28 600 NA 500 ...... '~-~ ........ ~8~'5:~ ..... '~'~5:~- ~-~-~5]~ ..... 8/~_~¢.~ nd<9:~ ........ ~0~ ............. ~_ ............. ~_ .... ~2,000 NA nd<2.5 nd<0.5 nd<0.5 nd<0.5 nd<0.5 .12!5/02. nd<0.5 ..... ~9 ......... ~,180 1,140 10,630 NA nd<2.5 nd<0.5, nd<0.5 nd<0.5 nd<0.5 N24/03 nd<0.5 nd<0.5 nd<0.5 nd<0.~ ...... ~605 ~ ...... ~2]-~ ........ n~<0]~" 'n8~0.5 nd<0.5 nd'~'6.'5 ' ..... : ......................................... · ........ .~ ..... -- ........... o HU<U 0 ~<U.~ 8/5/03 nd<0.5 nd<0.5 5 76 4 560 NA 40 E2C Remediation Table 3-1 Project Number 1801BK03 November 15, 2003 , TABLE 3 SUMMARY OF HISTORICAL GROUNDWATER ANALYTICAL DATA MR. FAST SERVICE STATION 600 Brundage Lane Bakersfield, California I B. I ' T I E / X I TPHg I TPI'Id I TBA I MtBE I DIPE I.ETBE I TAME WELL ID DATE [ ........... .................... : .......................................................................................................................................................................................................................... ~ug/L) 4/5/96 <0,3 <,3 <0,3 <,03 <50,0 NA NA NA NA NA NA · 3/27/97 1,0 6,2 0,83 4,5 44 NA NA NA NA NA NA 10/20/98 <0,5 <0,5 <0,5 <0,5 <50 NA NA <0,5 NA NA NA 1/11/99 '~015 <0._5 ......... _<_.0_.__5. ....... <0'5 .......... <_5__.0_. ........ NA NA <0.5 NA NA NA 5/12/99 <0.3 5.5 <0.3 1.52 <500 NA NA <2.0 NA NA NA 8/.2_0_/~9 ........... <0-3 <0.';~ ........ i <0~.3 ....... <0.6 <500 NA UA <2.0 NA NA NA 1.2.f7__/?~' .....<0.3 <0:.~ ........ ¢_0'3 .... <0'6 ...... .~5.0.0_ NA NA <2.0 NA NA NA 3/30/00 <0.3 <0.3 - <0.3 <0.6 <500 NA _ _NA <.0:5 NA NA NA 7/3/00 <0.5 <0.5 <0.5 <0.5 <50 NA NA <0.5 NA NA NA 6/4/01 nd<0.5 n_d.<__o__.5- .... _~.d_ _<0._5_ .......... n_(::l_<~:5_ ....... _n_d<_50~.- NA nd<2.5 nd<0.5 nd<0.5 nd<0.5 nd<0.5 8/6/01 nd<0.5 nd<0.5 nd<0.5 nd<0.5 nd<50 NA nd<2.5 nd<0.5 nd<0.5 . nd<0.5 nd<0.5 5/16/02 1.6 58 1.0 37.9 470 NA nd<2.5 nd<0.5 nd<0.5 nd<0.5 nd<0.5 8/21/02 1.2 5.2 1.7 5.0 390 ........ ~A nd<2.5 nd<0.5 nd<0.5 nd<0.5 nd<0.5 '- -~275~8~ ........... -n-~<6.5 'n~l<~.-5 1.3 1.2 220 NA nd<2.5 nd<0.5 nd<0.5 nd<0.5 nd<0.5 2/25/03 nd<0.5 nd<0.5 nd<0.5 , nd<0.5 nd<50 NA nd<2.5 nd<0.5 nd<0.5 nd<0.5 nd<0.5 E2C Remediation Table 3-2 Project Number 18019K03 November 15, 2003 TABLE 3 SUMMARY OF HISTORICAL GROUNDWATER ANALYTICAL DATA MR'. FAST SERVICE STATION 600 Brundage Lane Bakersfield, California 'J l B I T J E ! X I TPHg / T"Ha I TB^ / MtBE' I DIPE I ETBE I TAME~ I , ~g/L) 4/5/96 ~ 41 42 35 3,000.00 8,600 NA NA NA NA NA NA 3/27/9~ .~'~....-. ~?.-'.. ~'.8:.4 ~.'~.~ ~.~'~.~.~_' ~".'~.i,.!00 ~A_ ........ '~_N_~. ..... '._ NA N~ ..........N'A 10120/98 4.6 <0.5 1.90 53.0 1,300 NA NA 3.8 NA NA NA i/1-i)99 ~0-"-: .' i'6.00 ~-~ ....... i80 8,200 NA NA 65.0 NA 5/1 ~99 8.36 <0.3 <0.3 421 14,300 NA NA 69.4 NA NA NA . 8/20/99 ............ <~:3_ <0.3 ~.. "..~..~_/' ~ ~'. <0.6 <500 NA NA . <2.0 NA NA NA 10/6/99 <0.3 <0.3 <0.3 <0.6 <500 NA N-~ ..... ~' ~"~'~ NA NA NA 12~/99 ;'0':3" ' <0.~ ....... ;b;3 1.3~ -~g~0 .......... NA NA ;'i;'0 ' NA 'NA .... 7/3/00 <50.0 <0.5 <0.5 <0.5 <50 NA NA <0.5 NA ......... 1/3/01 nd<0.50 nd<0.50 nd<0.50 nd<0.50 -nd<50 NA nd<5 nd<0.50 nd<0.50 ~ nd<0.50 nd<0.50 3/2/01 nd<0.50 nd<0.50 nd<0.50 10 2,704 NA nd<5 - nd<0.50 nd<0.50 nd<0.50 nd<0.50 MW-3 ' ~4~0i ...... ' ....... nd<'o~g ................. ~.g--' -~.g ....... nd<0.5 ........ 3~ ....... ~A- ............... ~'d-<~.~--.- --nd"~- .......... ~<0.g - nd<0.5 nd<0.5 dup nd<0.5 nd<0.5 nd<0.5 nd<0.5 388 NA nd<2.5 nd<0.5 nd<0.5 nd<0.5 nd<0.5 8/6/01 nd<0.5 nd<0.5 nd<0.5 - ~'d<~.~ nd<50 NA nd<2.5 nd<0.5 nd<0.5 nd<0.5 nd<0.5 12/6/01 nd<0.5 1.06 nd<0.5 ...... ~'d'~5 515 NA nd<2.5 nd<0.5 nd<0.5 nd<0.5 nd<0.5 dup nd<0.5 0.92 nd<0.5 nd<0.5 380 NA nd<2.5 nd<0.5 nd<0.5 nd<0.5 nd<0.5 8/21/02 2.5 9.5 2.4 7.9 90 NA nd<2.5 nd<0.5 nd<0.5 nd<0.5 nd<0.5 12/5/02 nd<0.5 nd<0~5 ..... 2.1 2.7 "70 NA nd<2.5 nd<O? nd<6.5 nd<0.5' nd<0,5 ~24/03 nd<0.5 nd<0.5 nd<0.5 nd<0.5 nd<50 NA nd<2.5 nd<0.5 .... 'nde0.5'' nd<0.5 nd<0.5 6/ o/o~ _ qd<O.5 nd<~.~ .... ~9.~ ..... nd<9.5 ~d<~ .......... _N~ ..... ~d.~2.~. ......... ~:~ ..... qd<O 5 ~15/~3 ,d79:5. nde0..~ ............ q~<O~.~ ......... nd<0.5 ]~_4 ......... BA nd<_F~.~ ............. ~d<.9_.~ ........ ~d<0..5 nd<0.5 nd<0~5 E2C Remediation Table 3-3 Project Number 1801BK05 · November 15, 200,3 TJ[BLE 3 SUMMARY OF HISTORICAL GROUNDWATER ANALYTICAL DATA MR. FAST SERVICE STATION 600 Brundage Lane Bakersfield, California / ...... ..B...: .:.1 ........ T. ....... J .......... .E ........ J .......... ..X. ......... I ..... T.P. Hg..,.J.....T.P.H...d......J ..... .T...B.A. ....... J. ....... _M..t.~..E. ...... WELL ID DATE [ · (~g/L) ' . .......... ~ .................................................. 4/5/96 <0.3 <0.3 0.75 260 1,800 NA NA NA NA NA NA ' 3i27/9-7 2.00 '20~0 ....... .1-i.~0 ~.-8 .... 340 N~' ..... NA N~ N~ NA NA :i'0/20~-98 ....... i5' ' 2150 ....... ~7 ............. 9~-(~ ........ ~i~00 -~-,~, ......... ~, ........... ~-00 ..... ~i-~ .... ~X ....... ~A ..... .... 'i~':1'i/99 ..... <0.5 <0.5 <0.5 <0.5 <50 NA NA 7.2 NA NA NA 5/12/99 58.7 9.87 388 1 ;040 13,600 NA NA 524.0 NA NA NA .... ~)20~99' <0.3 '<'0~'3 i '~13 ............ ~.6 ....... ~5~)-~ ......... N~ NA 3-~47 ........ U~ ' NA N~A 10/6/99 <0.3 <0.3 <0.3 <0.6 <500 NA NA <2.0 NA NA NA _' ..... i12~99 ......<0.'_3 ........... _<..~._3_.__i _ i. ___i._<~ _0 :'3 ...... 'i :~' i' <500 ........ NA NA 5.'i5 .... 3/30/00 <0.3 <0.3 <0.3 <0.6 <500 NA NA · <0.5 NA NA NA MW-4 3/2/01 nd<0.50 nd<0.50 nd<0.50 nd<0.50 nd<SO NA ......... ~'~-5 6/4/01 nd<0.5 nd<0.5 nd<0.5 nd<0.5 nd<50 NA nd<2.5 nd<0.5' nd<0.5 nd<0.5 nd<0.5 8/6/01 nd<0.5 nd<0.5 nd<0.5 nd<0.5 nd<50 NA nd<2.5 ........ r~d~5.5 ~5.5 ...... ~d-~:5- ...... n~o~ .... 12/6/01 6.44 295 80 295 2,210 NA nd<2.5 nd<0.5 nd<0.5 nd<0.5 nd<0.5 ' 2/18/02 54 230 4.7 225 200 NA nd<2.5 nd<0.5 nd<0.5 nd<0.5 nd<0.5 5/16/02 1.2 46 2.2 50 640 NA .... ~'<-~i~ i-' nd<0.5 nd<0.5 nd<0.5 nd<0.5 12/5/02 nd<0.5 nd<0.5 nd<0.5 0.6 110 NA nd<2.5 nd<0.5 nd<0.5 nd<0.5 nd<0.5 2/25/03 nd<0.5 nd<0.5 nd<0.5 nd<0.5 nd<50 NA nd<2.5 nd<0.5 nd<0.5 nd<0.5 nd<0.5 6/10/0_3 'n.d_~..0_:_5 .... , ~d<.0-5_ ........ n_d<__°-_5 ....... i~d_<0:-5_' ....... -n-_d.~.~_0- _ ........ .8./~/.0__3. ............ .n_.d_<0:5 ........ n.d~0.5 ....... ~)_d.. <__0_. _5 ........ n_._d<_.0:_5 ......... .n_~ ~_~5_0. ....... ~NA ........ _n_d<2:5 E2C Remediation Table 3-4 Project Number 1801BK03 November 15, 2003 TABLE 3 SUMMARY OF HISTORICAL GROUNDWATER ANALYTICAL DATA MR. FAST SERVICE STATION 600 Brundage Lane Bakersfield, California I 3/27/97 8.8 32 3.6 29 320 NA NA NA NA NA NA 10/20)98 .... ~0~5 ....... <~:~ ..... ~-(~.5 ~0.5 ~ ...... NA ...... i~iA ......... <'0.,~ ........ NA NA ..... NA" 1/11/99 <0.5 3.9 <0.5 1.50 <50 NA NA <0.5 · NA NA .... 5);I-~'~99' · .... ~).~ ..... <0.3 <0.3 1.27 <500 · NA NA 21.40 NA NA NA 8/20/99 <0.3 <0.3 <0.3 <0.6 <500 NA NA 1.65 N~" 'N'A NA i2/7/99 <0.3 <0.3 . <0.3 <0.6 <500 NA NA ~'i~0~ N~ uA ' ' 'NA ....... 3/30/00 <0.3' <0.3 <0.3 <0.3 <500 NA NA <0.5 NA NA NA ' 7/3/00 <0.5 <0.5 <0.5 <0.5 <50 NA' NA <0.5 NA NA NA 1/3/01 nd<0.50 nd<0.50 nd<0.50 2.46 nd<50 NA nd<5 nd<0.50 nd<0.50 nd<0.50 . nd<0.50 3/2/01 nd<0.50 nd<0.50 nd<0.50 nd<0.50 nd<50 NA nd<5 nd<0.50 nd<0.50 nd<0.50 nd<0.50 MW-5 ..... ._6/_4/_0_? ...... nd<0._,5_ .... _n_d_<_0.~5 ..... nd<0_.5~ _ ___nde<0._5- ....... _n.d_<__5_0_ .... _ N~A___ - nd<~i~-'-: nd<0.5 nd<0.5 n(J<-6:-,~ nd<0.5 8/6/01 nd<0.5 nd<0~5 nd<0.5 nd<0.5 nd<50 NA nd<2.5 nd<0.5 · nd<0.5 nd<0.5 nd<0.5 12/6/01 12.41 480 105 375 2,510 NA nd<2.5 nd<0.5 nd<0.5 nd<0.5 nd<0.5 5/22/02 nd<0.5 nd<0.5 nd<0.5 20 220 NA nd<2.5 nd<0.5 nd<0.5 nd<0.5 nd<0.5 8/21/02 1.7 6.9 2.4 6.5 90 NA nd<2.5 nd<0.5 nd<0.5 nd<0.5 nd<0.5 12/5/02 nd<0.5 nd<0.5 1.5 nd <0.5 100 NA nd<2.5 nd<0.5 nd<0.5 nd<0.5 nd<0.5 2/25/03 nd<0.5 nd<0.5 nd<0.5 nd<0.5 nd<50 NA nd<2.5 nd<0.5 nd<0.5 nd<0.5 nd<0.5 6/10/03 nd<0.5 nd<0.5 nd<0.5 nd<0.5 nd<50 NA nd<2.5 nd<0.5 nd<0.5 '~d~0.5' nd<0.5 8/5/03 nd<0.5 nd<0.5 nd<0.5 nd<0.5 nd<50 NA nd<2.5 nd~'~..~ ......... -ncJ-~:o:~ nd<0.5 nd<0.5 E2C Remediation Table 3-5 Project Number 1801BK03 November 15, 2003, TABLE 3 SUMMARY OF HISTORICAL GROUNDWATER ANALYTICAL DATA MR. FAST SERVICE STATION 600 Brundage Lane Bakersfield, California I B-. I ~' '1 E / x . I 'rp.g I TP.,~ I ~'BA / =t=E I D~PE. I ET.E I TAM= / (pg/L) / 3/27/97 0.98 5.90 0.92 5.80 60.00 NA NA NA NA UA 'NA i0/20/98 <0.5 '<0.'~ ...... ~0~ ~'.~ ............ ~0 -N'A N~,- ...... U~' .... .N,A I~A UA- `1ii"i799 '<50:6 5'.;~0 ........ ~°15 .......... ~85 ................. ~0 .... ~i~ ........ NA <0.5 NA NA NA · 5/i2~9g ..... <0.~ i':~E~ ......... ~6~ ........... 4~6~ ........ -<550 ...... ~ ............. N~ ............... ~2~5 ............. N,~ .......... ~i-A ........ N'A ..... 8/20/99 <0.3 <0.3 <0.3 <0.6 <500 NA NA <1.0 NA NA NA ;i'2~i~9 NA NA .NA .... N,~ ...... ~A N~, N~ ........ NA ........ -I~,~ ............. : I~-,~ N~ ...... 3~30~00 <0.3 <~:__3. ............... ~__0.:;~ ........... _<_0. :_6_ ........ ?.500 .......... ~_A. NA_. .............. ~0.:t5 ........ NA ......... _NA NA 7~3/00 <0.5 <0.5 <0.5 <0.5 <50 NA NA <0.5 NA NA NA ....... 1~3-/-0i t"-~d~-~--- nd<0.50 nd<0.50 nd<0.50 nd<55 ............. N~ ............. ~'~-5- ........ n-d-<-o-.'~-~-'- nd<~.5'(~ ...... r~d-~0:~(~"- 3/2/01 nd<0.50 nd<0.50 nd<0.50 nd<0.50 nd<50 NA nd<5 nd<0.50 nd<0.50, nd<0.50 nd<0.50 MW-6 .... 6/4/0'1 ..... n-d-~:,~ ......... ~'5~'~)~- ...... ~ d-~-0-~5- ...... ncJ~ ..... nd<~ ............ -N~ ......... nd<2.5 nd<0.5 nd<0.5 nd<0.5 nd<0.5 8/6/01 nd<0.5 nd<0.5 nd<0.5 nd<0.5 ....... 1 ,~85-0 .......... "--~-~, ....... -~d-<-2.--~--' nd<0.5 nd<0.5 nd<0.5 nd<0.5 12/6/01 6.41 270 77 255 2,150 NA nd<2.5 nd<0.5 nd<0.5 nd<0.5 nd<0.5 2/18/02 nd<0.5 5.8 nd<0.5 25 150 NA nd<2.5 nd<0.5 n~-ot~5 ....... nd<~)i5 nd<'Oi5'' ......... 5-/22~-2- ............ 5.-7- ......... nd<0.5 nd<0.5 25 180 NA -~' ~-~;:~-'-- nd<0.5 nd<0.5 nd<0.5 nd<0.5 .... : ~:~-~2- ............... `1~9- ........... ~ .......... ~..~ ............. -~-.4 ........... 60 .................... -N-A-- - nd<2.5 ---~:~':~S' .... nd<0.5 nd<0.5 nd<0.5 12/5/02 nd<0.5 nd<0.5 1.3 1.5 nd<50 NA' nd<2.5 nd<0.5 nd<0.5 nd<0.5 nd<0.5 2/24/03 nd<0.5 nd<0.5 nd<0.5 nd<0.5 912 NA nd<2.5 nd<0.5 nd<0.5 nd<0.5 nd<0.5 6/10/03 nd<0.5 . n_d.<0:5_ ........ 0_._6.8 ........ 1.8.4__ ~.~ .... nd<5_O_ ......... NA ........... nd<_2._5 nd<0.5 nd<0.5 nd<0.5 nd<0.5 8~5~03 nd<0.5 nd<0.5 nd<0.5 nd<0.5 nd<50 NA nd<2.5 nd<0.5 nd<0.5 nd<0.5 nd<0.5 E2C Remediation Table 3-6 Project Number 1801BK03 November 15, 2003 TABLE 3 SUMMARY OF HISTORICAL GROUNDWATER ANALYTICAL DATA MR. FAST SERVICE STATION 600 Brundage Lane Bakersfield, California I a. I T. I E J X I TF'Hg I TP"al TeA I MtBE I D":'E I ETBE I TAME] WELL ID DATE [---,----':-'-: ................................................................................................................. -¢-~71"i ................................................................................................................................. -] 3/2'~/97 2,4~? . 24!0.0_0 ........ _2,_30000 14,000. _!. _4__0.,~00. .... N~ NA ................ NA NA NA 10/20/98 110 25,000 3,500 27,000 150,000 NA NA 150 NA N~" NA- 5/12/99 NSFP NSFP · NSFP NSFP NSFP NA .NA NSFP NA NA NA 12/7/99 NSFP NSFP .NSFP NSFP NSFP NA NSFP 3/30/00 NSFP NSFP NSFP NSFP NSFP NA NSFP · 7/3/00 ..... _N _s_ _F'~ ............ N s__~? ........... _N_ _S _F'P_ ................. N_S..EP. NSFP NA NSFP 1/3/01 NSFP NSFP NSFP ___N__SFP ...... _N~S.F_P- ........... _N_A ....... _N___S__F_p ....... .N_S_FP NsFp ......... _NS_F~ ........ ~SFp 3/2/01 <20 9,400 4,100 28,000 24~9_4_ _0_ ........... N_A ...... <_2_0-_0_ ....... .~_2~0 ......... _<20 <_2_0 ........... ~_2.0 .... MW-7. · 6(4!~! ......... : _<50.~___ _5_L7_3_0' ......... 3,5~90_ ...... _13,230 ~8_7,_9_6_0- ........ _NA ~_/_6_/.0_1- ............ _<_59._0- ...... _1,7~8_0~ ....... 2,_3~3_0 _ _ 1_ _0,_6__0_0_ .... _3_5,~5_0_ O_ ......... ..N_A__ _ _<__2_50.~0 .... ~<5_0_ ._0 . ~.5_?_._0_ ......... ~<5_0_:0 ......... __<.5_0:_0- 12/7/01 nd<0.5 2,315 1,120 8,290 ·42,835 NA nd<2.5 nd<0.5 nd<0.5 nd<0.5 nd<0.5 2/19~02 NSFP ' NS-FP- ....N§~P N-SFP ~-~-~-~' .... NS~F¢ ..... ~'~'~ -_-_:.'~i~_FP '. ..... NS~P ..... 'N_s'FP_': _...__N_S_FP 5/22/02 1.8 300 nd<0.5 3,120 31,500 NA nd<2.5 nd<0.5 nd<0.5 nd<0.5 nd<0.5 dup nd<0.5 440 nd<0.5 3,370 35,000 NA nd<2.5 nd<0.5 nd<0.5 nd<O;5 nd<0.5 8/21/02 nd<0.5 810 810 5,650 94,000 NA nd<2.5 nd<0.5 nd<0.5 nd<0.5 nd<0.5 ·!2/5¢02 ~.d._<_0.5_ .......... .1__,1__8_0.. .............. .4_,_260~ .... 4,630 __ 1_3_,9_0_0. ............. NA ............. _n_ d_<_ 2._5- 2/24/03 nd<0.5 170 7,300 7,200 1,170 NA nd<2.5 nd<0.5 nd<0.5 nd<0.5 nd<0.5 6/10/6~ r~d-<6-~5 ......... 2-..8~ ............. ~-~).4- ............. ~;595 ...... 5;7-~ .......... N-A ...... -nc~;~..-5- ....... ~.~1<~0-~. ";qd<O.'5 nd;~.5 ~d<0.5 8/5/03 nd<0.5 3.0 ...... 9to 149.0 . nd<50 . NA pd<2.5 ..... nd<0.5 nd<0.5 nd<0.5 nd<0.5 E2C Remediation Table 3-7 . P/;oject Number 1801BK03 November 15, 2003 TABLE 3 SUMMARY OF HISTORICAL GROUNDWATER ANALYTICAL DATA' MR. FAST SERVICE STATION 600 Brundage Lane ' Bakersfield, California WELL ID DATE [ . (#g/L) . ' ..................... 7/3/00 820 64,000 6,300 73,000 260,000 NA NA 550 NA NA NA 3/2/01 34 . 53,000 4,000 26,000 34,280 NA <2,000 <200 <200 <200 <200 ...... dU._p <200 .... 48,.000 4.,.~_0,0. ........ _26,°_00 ..... ~.3,6.!_0 ........... N_~._ _; <2,000_ ..... ~2_000 ...... :<._2_00 . ,<200 :<_20_0 6/4/01 nd<50.0 43,560 3~.77_0- ............. _14.,_7.60 6_4_,320 NA nd<250.0 nd<50.0 nd<50.O nd<50.0 nd<50.0 i" i-2/~0"i · nd<50.0 31,075 5,160 .18,650 107 335 NA nd<250.0 nd<50.0 nd<50.0 nd<50.0 nd<50 0 MW-8 2/18/02 0.6 1,100 1,410 3,270 27,500 NA nd<2.5 nd<0.5 nd<0;5 nd<0.5 nd<0.5 8/21/02 nd<40 32,760 3,940 . 16,870 113,000 NA nd<200 nd<40~ nd~-~0- ..... -n~,-5 ....... -n-d-.~,4~-- 12/6/02 nd<0.5 19,900 1,270 14,380 54,000 NA nd<2.5 nd<0.5 nd<0.5 nd<0.5 nd<0.5 6/10/03 nd<0.5 8,600 23..1_ 10,040 9,6.3(~ N.A ..... nd<2.5 nd<0.5 nd<0.5 nd<0.5 nd<0.5 7/3/00 <0.5 <0.5 <0.5 <0.5 <50 NA NA . <0.5 NA NA NA 1/3/01 nd<0.50 nd<0.50 nd<0.50 nd<0.50 nd<50 NA . nd<5 n~.d<~0_._50~_- ?_d__<_0_._~50 ~_<_0_..5_0__. nd__<_0:5_0_ 6/4/01 nd <0.5 nd <0.5 nd <0.5 nd <0.5 nd<50 NA nd<2.5 nd <0.5 nd <0.5 nd <0 5 nd<0.5 ..... 8-~6-/0~ ......... n~l"~i'~ .... nd <0.5 nd <0.5 nd <0.5 nd<50 NA nd<2.5 ' nd <0.5 nd <0.5 nd <0.5 nd<0.5 1~/6/01 32.9 555 105 ~'~5 5,650 "! HA nd<2.5 nde0:5 nd <0.5 nd <0.5 nd',~0'.5 2118102 7.3 10 nd <01~5 79' 380 ' NA nd<2.5 nd <0.5' nd <0.5 nd <'0.5 nd<0.5 8/21/02 1.8 7.9 2.8 9.5 50 NA nd<2.5 nd<0.5 nd<0.5 nd<0.5 nd<0.5 12/5/02 nd<0.5 nd<0.5 2.2 5.3 nd<50 NA nd<2.5 nd<0.5 nd<0.5 ~d-<~.5' n~l~'~ ~25/0~ ' n-d~0.S ..... i nd<of5 nd<0?~ ........ nd<~;'5 nd-.~'0 ......... N~ " nd<2:5 n~l-<-o~5 ........ n~0.5 n(:J~o.s ' 'n~<o.~'- 6/10/03 nd<0.5 nd<0.5 1.17 3.37 nd<50 NA nd<2.5 nd<0.5 nd<0.5 nd<0.5 nd<0.5 8/5/03 nd<0.5 nd<0.5 nd<0.5 nd<0.5 270 NA nd<2.5 nd<0.5 nd<0.5 nd<0.5 nd<0.5 E2C Remediation Table 3-8 Project Number 1801BK03 November 15, 2003 TABLE 3 SUMMARY OF HISTORICAL GROUNDWATER ANALYTICAL DATA MR. FAST SERVICE STATION ' 600 Brundage Lane ' Bakersfield, California WELL ID DATE B : I T I E / x I TPHg / TPHd I TBA I MtBE IDIPE (//g/L) . / 7/3/00 <0.5 <0.5 <0.5 <0.5 <50 NA NA <0.5 NA NA . NA ..... !/~_/0 ! nd<0.50 n~l~0, nd<0.50 nd<0.50 nd<50 UA nd<0.50 nd<0.50 nd<0.50 nd<0.50 nd<0.50 ...... _3/.~.0~ nd,~'(~:~0' ...... r~d-~'~:'~0- 'nd~5-.5~ ...... ~i~-0: 5-0- ........ ~(~55 6/4/01 : 'r~'(J~0-:~ ......... r~-~':~o:'5- nd<0:5 ........ ~i-~5:~- .......... n-(j<50 8/6/01 nd<0.5 · nd<0.5 nd<0.5 nd<0.5 nd<50 NA nd<2.5 nd<0.5 nd<0.5 nd<0.5 nd<0.5 1-'216)0i 4.~9 ........ ~10 . 65 ..... 23-5 .... 11735 2/18/02 nd<0.5 14 0.7 25.7 215 NA nd<2.5 nd<0.5 nd<0.5 nd<0.5 nd<0.5 MW-10 .... i~72~7o~ ~-~- ......... , ..... :4:9- ............ '-~:~ ............... 4:~ ....... i ...... ~-~ .......... ~, ..... _2_/2_5_/..0_3 ........ _nd<~0_._5. ...... _n_d_<_0.5 nd<0.5 nd<0.5 1,570 NA nd<2.5 nd<0.5 nd<0.5 nd<0.5 nd<0.5 _6/_1_._0_/~_3 ..... nd_<_0._5_ ......53.0 1,14~0 _ 2,8_9.0 ....... 1_7_5` _ NA nde<._2._5_ ...... n_d_<~0._5__ ___n_d<._0_:_5_ n_d,~.0..5~ ..... _nd_ <~ .0 .._5__- 815103 nd<O_..5_ ...... n_ d<_0._5_. 2 .......... 4.1 nd<5O NA nd<2.5 nd<0.5 nd<0.5 nd<0.5 nd<0.5 . ?/.3_/_0_.0_ ~ _0:.5_ ....... ~.0'~5 ........<._0_'~ ..... <0.5 <50.0 NA NA <0.5 NA NA NA MW-11 ..... _1__/_3_/_0_.! ~!<2_0 ........3,600 ..... 2_,6__0~0__ 1~,5~5- .... -'i~':~i55 ........ ~,I~A-- ....... n~-2-~ ....... -r~- ....... ~<-~)-(~" nd<20 .......... n~1-~'~- 3/2/01 NSWS NSWS NSWS NSWS ....... NS-~S ..... NSWS 3/2/01 Well tal~-~-t-~-'~-~vice, silted up to 12 feet from bottom, replaced by MW-11 R; converted into VE well ~/_4./_._0_!_ 54.0_ ......... _1.1,_9.8_0 ........ !;__3_9._0.__ 7,230 54,410 <50 nd<250.O nd<50.0i nd<50.0 nd<50.0 nd<50.0 8/6/01 86_6 .... 2.9,.8~.0_ 2,425 _ :._.~!-~-~-6 ' ..... .'-~:?:4:75 :-'' ::.-:~.A_~_~-'-:~a;-~..F,~:~ .... i:-n-~-5~..o__:' :7-~-~;~(~.:0 nd<50:0' ~-a-~o.-0-- 12/7/01 nd<0.5 ....... 440 ........ ND ............ 4~4'~5 ..... 6,775 ....... _NA nd<~:5 ........... n.d<0.5_, nd<0.5 nd<0.5 nd~0:~ ~i'8/02 140 1,560 1,090 2,440 22,000 NA nd<2.5 nd<0.5 nd<0.5 nd<0.5 n'd~0:5 duplicate 140 1,320 1,063 2,490 28,000 NA . nd<2.5 nd<0.5 nd<0.5 nd<0.5 nd<0.5 MW-11R "~'ii-~-/..~/-52 ...... ~,5 ........... -i-~1-5§0- ........... ~---- - ~,,~5-0 ....... ~:~3~ -i-'--'~ ....... ~d~2~- .... -r~<~.5 --~1-<~.-~ nd'~-:5 ...... ~-<~.-~--- 8/21/o2 'nd<4_0. .. 3~i~1~5' ' i'35 .......... i~i0§6 ...... i08,500 ......... ~-: ...... ri'd'~205 ...... n-~i~46 ...... r~-d':~4-o nd<40 ' :'nde40 .... i-2/6~°2' "nd<0.5 59;'i50 nd;si5'" ........ §19§5 "'6~ii(0(~ ..... -N~ ....... -nd<215 2/24103 nd<0:5 25,05~ ....... 4,000 ....... _'17_,. .5_ 0_0- 48,500 ..... NA nd<2.5 nd<0.5 nd<0.5 nd<O.5 nd<0.5 6!.?.0/03 . nd<Q.5 .. ~.5,_700_ 3,!_40 ........ 6,_4_80 8,780 .... NA._ ........ r~d_<2._5 n_d~.O_.5 ..... _nde0.5 nd<0.5 ..... 8_/5!03 ! .............. _1.~,120.. .... 1_,8~}0 ........... 6_.,7_20 ........ 3,.-9.20 ...... N~ ......... _nd<2.:5 .... ndEq.5 ...... nd~O 5. 'nd<0.5 nd<0.5 E2C Remediation Table 3-9 Project Number 1801BK03 November 15, 2003 TABLE 3 - SUMMARY OF HISTORICAL GROUNDWATER ANALYTICAL DATA MR. FAST SERVICE STATION 600 Brundage Lane Bakersfield, California I l~ B I T I E / X I TPHg I TPHd I TBA I MtBE I DIPE I ETBE I TAME~ WELL ID DATE I .................. :: .......... ' ........................ : ................................................................................................................................................................................................................ ..... 6_/. ~4_/_0.! NSFP NSFP 'NSFP NSFP NSFP NSFP NSFP NSFP NSFP NSFP NSFP ' ........ 8_/_6/_01_ .... NSFP ~S~i~-''-:- i~Fi5 ...... N'~-FP ...... ....... NSFP NSFP"" 'N'~I~'P 12/7/01 NSFP ..... N-~-F 15 ...... ~ N~FP ......... ~-SF-P- ........... ~-S-I~i5 .... -N ,~15 ........ '~-~p .......... N~';~-i5 ...... i' I~§~P- .... -NS[~P ..... ~=-P-' ...... -22-i-9)02 .... ~SFp ': NSFP NSFP NSFP NSFP NSFP NSFP NSFP: NSFP NSFP NSFP 5/23/02 nd<0.5 910 970 10,910 78,000 NA nd<2.5 nd<0.5 nd<0.5 nd<0.5 nd~).'5 MW-12 8/22/02 nd<0.5 . 685 1,010 4,280 78 000 NA 2/24103 nd<0.5 408 5,500 5,800 11,700 NA nd<2.5 .... -n~<-~-~- ..... ndT<~-.'~- ..... ~d~5]-~ nd<0~5 ...... 6/~10~/_0..3~ __n...d..~_0.5 ...... 155~ .... --1.40 2,646 4,330 NA nd<2.5 nd<0.5 nd<0.5 nd<0.5 '-r~d~'0-.~ '- .___8_~5~/_~ n.d~0.5 ....... _69=_7 ........ _7_0_~ ........ 1,100 ...... _nd_<_5_0 ........ NA_ .... _n_d~<2..5 ......... _n__d_<_~:5_ ...... n_d <_0:_5_ .... n.d _<_0._5. ..... _n__d_<_.0_._5_._ 6/4/01 nd<50.O ...... ~<50~._0___ nd<50.0' .nd<50.O ___5,_5_80 NA nd<250.0 nd<50.0 nd<50.0 nd<50.0 nd<50.0 ~)5:1- .... ~SFp NSFP NSFP NSFP NSFP ....... NS~'i 8/22/02 nd<40 1,490 890 2,900 137,000 NA nd<200 nd<40 nd<40 nd<40 nd<40 MW-13 12/6/02 14 7,020 1,980 8,420 40,900 NA nd<2.5 nd<0.5 nd<0.5 nd<0.5 nd<0.5 duplicate 20 7,660 5,520 9,110 38,000 NA nd<2.5 nd<0 5 nd<0.5 nd<0.5 nd<0 5 ........ ~)':i'~/53 NSFP ' N~P "'' N~FP ...... ~-FI5- .... ~'S'~:P ..... NS-F'I 8/5/03 5.0 535 730 4,708 4,180 NA nd<2.5 nd<0.5 nd<0.5 nd<0.5 nd<0.5 ........ ..d?P ............. _3-0 .............. 2~._°__ ........... _1.;~0_ ._ 3,180 _ __~11 ,_3_7__0_ ........ _NA__ E2C Remediation Table 3-10 Project Number 1801BK03 November 15, 2003 TABLE 3 SUMMARY OF HISTORICAL GROUNDWATER ANALYTICAL DATA MR. FAST SERVICE STATION ' 600 Brundage Lane Bakersfield, California B I TI E / x '1 TPHg ImPHdl T.A IMtBE I DIPE ETBETAME (pg/L) ...... 6-/4(0? ..... 87! .... !-'-4--9-4- ............ 3-7! 1'057 ....... -9'-2-4~ ...... <50 ....... ~._5.:0 ........... _<5.0 <5.0 <5.0 <5.0 8/6/01 160 187 150 138 1 o4 NA <25.O <5.O <5;0 ..... <5.0 ~5;0' - -Du_ _P.l~¢_at~ ......... !_~2 .......... ~1__1..4_ ............... !._3..~ 113 82 NA <25.0 <5.0 <5.0 <5.0 <5.0 2/18/02 2 ~.2 37 31 590 NA 100 nd<0.5 nd<8.5 8/22/02 19 13 21 83 2,040 NA nd<2.5 nd<0.5 nd<0.5 nd<0.5 nd<0.5 .... .du_ pli_C:_a?_ ....... _1_8_ ................ 1_0_ ........ 1_9. ................ 8_7_ .......... 2_, 120. ............ _N_A_ ....... ri_d_<_2.5 nd<0.5 nd<0.5 nd<0.5 nd<0.5 MW-14 ___1_.2/5/~0.2- ........ _3_:.~ ...... 18 16 -I 101 1,860 NA nd<2.5 .... ~d-~-0-1~- ...... -~1-~)'~-5--' ";--~l-~75-'-.-'-r~'~0.-~ 8/22/02 19 13 21 83 2,040 NA nd<2.5 nd<0.5 nd<0.5 nd<0.5 nd<0.5 duplicate 18 10 19 87 2 120 NA nd<2.5 nd<0.5 nd<0.5 nd<0 5 nd<0.5 ..... -1-~)~2 ..... §.:1- .......... ~ ......... -1-~- ........ ~'~-i' ........... 1,860- ....... 2/25/03 7.0 6.2 nd<0.5 10.7 1,06~- .... N~ .... _dupl~i._c~t_e_ ......... ¢_4_.~ ..... 2_7_..~ ___1_1_.8. .... ~_8.1 1,620 ' NA nd<2.5 nd<0.5 nd<0.5 nd<0.5 nd<0.5 6/10/03 nd<0.5 nd<0.5 nd<0.5 nd<0;5 -- n-d-<5-0- ....... N~ ....._d.u__p._ ........ nd_<_..0_:§' _~nd<0.5 nd~<0~..5_ ......... n_d~<_0.5~ _~n_d_<50 NA nd<2.5 _ __n_d_<__0_.~. _:?_d_<_o.._5_ ........ _n_cl_<0.~5 ...... _n__d_<_0._5__ ...... ~/5/__0..3_. ....... _n.d~<~:5 ........ _n_d<O~.5 _ ....... 4:4_ ......... ~.O .... n_d_<50 ....... _N_~_ ....... _n. _d<2~._5_ ..... n__d.~_.0_:~ ....... nd_<__0_.. 5_ ....... _n.d..<_o~:.5- n.d_.~0.5__ 12/7/01 NSWD NSWD NSWD NSWD NSWD NSWD NSWD NSWD NSWD NSWD NSWD 8122102 NSWD NSWD NS_.W___D__ ....... B._S_~_.D _ ....... --" I~1-S~5 ..... N'~-~5 ...... -N-~'D ...... ~-~;~N'5 ....... -NS~/~/I~ N-~W5 ...... N'~WD MW-lSD 12/5/02 NSWD NSWD NSWD NSWD NSWD NSWD NSWD NSWD NSWD NSWD NSWD . 8/5/~3 NSWD NSWD .... NSWD NSWD NSWD NS_~WD N_s~D NSWD . NSWD NSWD NSWD E2C Reme~liation Table 3-11 Project Number 1801BK03 November 15, 2003 TABLE 3 SUMMARY OF HISTORICAL GROUNDWATER ANALYTICAL DATA MR, FAsT SERVICE STATION 600 Brunda§e Lane Bakersfield, California I B I T I E / X I TR.= I TP"al TBA / MtBE I DIPE I ET. E ITAr. E I WELL ID DATE 1~/01 nd<0.5 nd<0.5 nd<0.5 nd<0.5 85 NA nd<2.5 ND ND ND ' nd<0,5 2/i~02 .... NS~D NSWD NSWD NSWD NSWD I' NSWD NSWD NSWD NSWD NSWD NSWD ' 5~22~ 25 ": ~','~ ......... ~-<0-.'~ ......... ~0- ..... ~'~,0-~ ........ ~A .... ~d'~:-5- ........ ~'~:~ nd<0.5 nd<0.5 nd<0.5 8/22/02 nd<0.5 ; nd<0.5 nd<0.5 nd<0.5 · - nd<50 .NA nd<2.5 nd<0.5 nd<0.5 nd<0.5 nd<0.5 MW-15S i"~2 nd<0:~ ~ n~:-~ ......... 22 ..... ....... ~-:-~ ........... ~d~ ..... N'~ ....... ~'~:-~ .......... ~-~ ~-~:-5' --~ 5 ~'~'0.5' ~24/03 nd<0.5 nd<0.5 nd<0.5 nd<0.5 nd<50 NA nd<2.5 nd<0.5 nd<0.5 nd<0.5 nd<0.5 6/10/03 nd<0.5 nd<0.5 nd<0.5 nd<0.5 73.2 NA nd<2.5 nd<0.5 nd<0.5 -nd<0.5 nd<0.5 8/5/03 nd<0.5 nd<0.5 4.0 7.0 nd<50 NA nd<2.5 nd<0.5 nd<0.5 nd<0.5 nd<0.5 12/7/01 NSWD NSWD NSWD NSWD NSWD NSWD NSWD NSWD NSWD NSWD NSWD ~18/02 NSWD NSWD NSWD NSWD NSWD NSWD NSWD NSWD NSWD NSWD NSWD 8~22/02 NSWD NSWD NSWD NSWD NSWD NSWD NSWD NSWD NSWD NSWD NSWD ~W-16 12/5/02 NSWD NSWD NSWD NSWD NSWD NSWD NSWD N~W5 ....... -~5 ........ N~-5 ...... :~WD ..... 2~24/03 NSWD NSWD NSWD NSWD NSWD NSWD NSWD NSWD NSWD NSWD NSWD 8/5/03 NSWD NSWD NSWD NSWD NSWD NSWD NSWD NSWD NSWD NSWD NSWD 12/7/01 NSWD NSWD NSWD NSWD NSWD NSWD NSWD NSWD NSWD NSWD NSWD 2/18/02 NSWD NSWD 'NSWD NSWD NSWD NSWD NSWD NSWD NSWD NSWD NSWD 5/22/05' NSWD N'S~'5 .......... ~D .......... ~'S~'5 ..... ~'~-~5~ ...... ~-~'g -~'D- ....... N~-~'5 'N-S-~D-'' N-~D N'~WD 2~24/03 NSWD NSW5 ......... ~S~'5 ........... NsWD ....... N~W5 ..... ~SwD N~'D ....... Nsw5 N~W5 N-sw5 N~'WD 8/5/03 NSWD NSWD NSWD NSWD NSWD NSWD NSWD NSWD NSWD NSWD NSWD E2C Remediation Table 3-12 Project Number 1801BK03 November 15, £003 TABLE 3 SUMMARY OF HISTORICAL GROUNDWATER ANALYTICAL DATA MR. FAST SERVICE STATION 600 Brundage Lane Bakersfield, California r ~ · T E X TP.g TP.d TBA M,BE D,PE ET.E TAME WELL ID DATE ......................... I ........... - .............. 1 ......................... 1 ......................... I ......................... l ...................... 1 ......................... 1 ......................... I ...................... I ...................... I ..................... (pg/L) 12/7/01 nd<0.5 nd<0.5 nd<0.5 nd<0.5 135 NA nd<2.5 nd<0.5 nd<0.5 nd<0.5 nd<0.5 2/~8/02 nde0.5 nd<0.5 ..... nd<0.5 n~'~0:-5 ...... ~.d-~50 N~ ...... n-~.~-5 ~d<0.5 nd<0~5 nd~0~-5 ..... ~2~02 .... :" ~d~o.5 n~:5 :'~0'.5 nd~O:~ n'~-<~o ~ ..... ~-~ ............ ~d~2~ .... nd<o:5 ~d~o:~' ..... ~'d~-~:5 ...... nd~O.~ .... 8/2~o2 _. nd<0.5 nd<0.5 nd<O.5 ...... ~'~':~ .......... ~-~0 .......... N~ ............. M~,17S 12)5/62 ...... nd~O:5- ........ nd<biS ..... ~;0.5 .....~;b.5 ...... ~-a<-~b ........ N~ ........... ~'<~:5 2/24/03 nd<0.5 nd<0.5 nd<0.5 nd<0.5 nd<50 NA nd<2.5 nd<0.5 nd<0.5 nd<0.5 .... ~ ~-<-0-~ :' 8/22/02 36 nd<0.5 , 4.0 4.5 nd<50 NA ' nd<2.5 nd<0.5 nd<0.5 nd<0.5 nd<0 5 Notes: Samplin~ pe~ormed by E2C starting 01/03/01 MTBE analysis by EPA Method 5030/8020 from10/20/98 to 1/3/01 NSWD = Not Sampled this Quader; well d~ MTBE analysis by EPA Method 8260b from 1/3/01 NSFP = Not sampled this qua~er due to pre~ence of free-product Results in micrograms per liter ~g/L) = parts per billion (ppb) NSW~ = Not sampled, well d~, casing silted up 12 feet from bottom B = Benzene T = Toluene DIPE = Diisopropyl Ether TAME = Te~ia~ Amyl Methyl Ether E = Ethylbenzene TBA = Te~ia~ Butyl Alcohol (a.k.a. te~-butanol) ETBE = Ethyl Tedia~ Butyl Ether TPHd = Total Petroleum Hydrocarbons as Diesel MtBE = Methyl te~ia~-Bu~l Ether TPHg = Total Petroleum Hydrocarbons as Gasoline NA = Not analyzed for this compound X = Total xylenes ND = Below Practical Quantitation Limits: BTEX-0.5 ~g/L, TPHg-50 p~L, and MtBE/DIP~ETB~AME-0.5 p~L; TBA-2.5 pg/L E2C Remediation Tab/e 3-13 Project Number 1801BK03 November 15 200,3 TABLE 4 SUMMARY OF ONSlTE VEJGASS MONITORING DATA Mr. Fast Service Station 600 Brundage Lane Bakersfield, California Cumulative Cumulative Inlet Well Well Well Well Dilution Field Field Cumulative Cumulative Cumulative Date Calendar Operating Operating Flow Chamber Stack VE-2 VE-3 MW-1NE-4 MW-8/VE-5 Air TPH in TPH out Lbs./Hr. Lbs. Lbs. Gallons Monitored Days Hours Hours (scfm) % LEL ' Temp. (°F) Temp. (°F) valve valve valve valve valve (ppmv) (ppmv) Extracted Extracted Destroyed Extracted ..... 4-/4/0-'2 9 34-8`5.~q 3 2-61 .... '.4 ........ 6_50- _~ _757- _ ,0_ . _O- ...... _0_. O _C. .... _9_50_ . 4_ (8`/-02_ .... ! . 3507.0 2_5 264 . 4. .... .8`5~0 ............ 6_8-6 0 O. . _0 ...... 0 C '.4_50, ..... `5:4 !r-6... 45.?_ ...... _4_4 6.8 ..... '.4J-6/_o.2 ....... 4 3-5.79.,9 .......... _97. _. . 240 ._4_ ...... -6_28. ........ _6__9_2 .... c .... _c .......... .0._ 4/10/02 6 3624.5 142.5 313 3 716 722 c c 0 0 c 700 10 30 402 1 398 62.2 ___ 4_/!5./_0_2_ ..... 1- ! ...... _3. -7 ,4. . -7 : _1 .......... `26-5:_1 .2_7_6. ..... _3_ ........... 66~8 ...... 67~9 .... c c 0 0 c 400 2 1.5 586.1 580 90.7 4/16/02 12 3767.3 288.3 180 3 682 671 c c 0 0 c 380 i 0.9 604.9 599 93.6 ___ 4/17/~0-2~ ........ )3_ ......... -37_8~.9._:1_ ......... ~-3 . _0 7_ ._1 ........ 23~5" __4__ _676 ..... 7~5"1. ........ _c .... _c_ ........... _0_. 4/2_4/_0-2_ ........ 2_0. ......... 3_9_5.6:_1- ......... _4..7_4-.1 .... .2_57_ .... _3-_ .... 685 ..... 6~7_9_ ...... c;_ ...... _c. .......... o~ ...... _0~ ...... ~cc ......... _895 8 3.1 1139.7 1128 176.3 4/29/02 ....- 2._5_ .............. _4.-0_7_6._1 ....... _59_ 4_ ._1 .......... .-25~-6 3 656 625 c c .... o~ ......... _(3_ ....... c~ ...... _39(3_ 3 ....... 1.~4 ...... 1_302_ .6 .... -I-2._9 o~ ..... _20-1:5_,- _._5/~_02 .......... 2_8_ ....... ~4_1_4_8._1~ ...... _6~6-6.~1 ..... 1_60_. _~3 ..... 65~5 .... 632~_ _.-po_ .... ~P~O_. 0 ........ 0:___ c 240 I 0.5 1340.2 1327 207.3 5/6/02 ......_3'2 ............ _42~3_2.0 .... 7_50_..9 ......_2_5_3 .3~ .......63~3"~ _ 61_!..~_ . P~O~ _ pQ _.0___ ............. 0 ....... _c. ...... _20__0. .... o_ ....... 0.~-7 ......... 1_3_-97.~9-_ __1_-38~4- ........... 21-6,_2_ ..... 5/14/02 4__0 ........... 4_4_26.~9 ........ 9_4_4:9~ ......2~5'2. ~3 ........ 63~1_ __61~8 ...... -po_ _PO__ __ ~0_ .............. o_ _c_ ___.95_ ...... _0.6~ ..... 9.3~ ...... 1_..4§1.~4 ....... 1_4_~ ......... 2_26_..,! ...... 5/21/02 47 4428.6 946.6 283 3 658 615 0 0 0 '0 c 300 04 1,2 1463.3 1449 226.4 6/~4/~0..2_ ...... 61 .... 4_58__7:9- ...... 1-_1_0.5.._.9'... 22~3- ........ _2_ ...... 62~4 ........ 59~8_ '_0_ ......... _~_ .... _0 ........... ..0_ ....... C~ .... ~300 __~0_._2 ..... _O_.9_ ..... 1_608~._2_ ...... 159_2 ............ ~4.8~._8 ..... _~6~/_02_ ........... 64: ....... _4_6_5_7-9. ......... 1~1_7.._5`: 9~ 208` ....... 2_ ~_6-6~8 ....... _6.1_2 ...... ._0_ ....... C ......... _0 ........ _0_ ....... _C_ ........ 4__9 .... 0.2 ...... O_'? .... 1_6_!7:._9. ..... ~1_6~2_ ............. ~_59:3_ _._6/.]]/_0_2 ..... 68 4_7_5_2.~8 ........ _1_ ?_0.. 8~ _ 2~33:4 ~2 ....... 65~3 ..... ~61~9 .__ 0 C 0 0 C 56 1.2 0.2 1634.8 1618 252.9 .... 6/~17._/-62~ ....... 74 . . _4~7_5_3:-5_ ....... 12~71__._5_ __ 228 ...... _3 ...... 6~5_9_ ...... _5_9--9 ........ _0_ ....... ~C ....... O~ ....... _0_ .......... _C_ .......... _620__ 0._2 ......... !_.-9_ ...... _1-63_6.2 ..... ,1_6_-2.9 ..... 2~5_3-._1_ .......... _6[.24/_02 81 4-929:0- .... 1438.0 .787 3 __6--6!.: 61_9. ..... _0. C. 0 ........ O .... C ..4_~_ ...... 0-2 9.1_ 1655.7 1639 256.1 .~7/_.1/_02_ ....... ~8 ...... 4--92_0.--6. ...... 1_4_3_8._0-6 ..... 1-__9_4 ...._5. .... 625. ...... 66_7 ....... _O_. ......C.. ~0~ .............. _0_ ........ ~ .... 1__00~0 ...... 1~ .......... 2.6 ......... !..~5__7..-6 ....... _16_4_1- ...... 2_5.6-~:~ 7/10/02 97 ' 5106.1 1624.1 267 4 614 656 0 C 0 0 C 30 0 0 1 1677.9 1661 259,6 8/12/02 130 5128.1 1646.1 281 2 648 605 0 C 0 0 , C 40 0.4 0.2 1681.3 1664 260.1 ~91_1_7J-02__ ........ _1_6.6. ........... _51__7§.4 ...... _1-69~4_.4_ 3"~0 _~ .......... 64~00 ...... 59~8_ .... _0 ....... _C ........... O~ ......... _0 ....... _~ ........ 4~9 ...... _1. ......... 0-._2_ ........ _1-69~1-_.6_ ........ ~_6_75 ........ _.2.-6_1_.._7 ...... __-9/24/0~2 ........... ,1_7-3_ ............ _5.-3_4-8_:7~ ........ _1_88 6_6 ._ ~7 .... 21_2 _ ~_ ..... 63~0_ ..... _6_O~1 ........ .0~ _ _.C_ ......... _0~ ...... O~ ......... C .......... _20_ ....... o_ _0.1_ :1.?,(~_1._5.. ...... _1.6_8.5" ...... 263'2 _~1_ 1/10~/_0_2 ....... 2~_29 ..... 5-35_0'_8_ ....... _1.6--68:_8` ....... ~8` 2_ ........ 65_3_ ......... _5. 9_4, ._ 0 C 0 PO C 68 0 0.3 1702.2 1685 263.3 I 5377.1 1895.1 241 3 652 611 0 C 0 0 C 52 ' 0 0.2 1~06.7 1690 264.0 _],1/_12(o2 ...... 2~2. ~.......................................................................................................... 11/22/02 232 5615.5 2133.5 235 ..... 648 609 0 C 0 0 C 38 0.6 0.1 1735.6 1718 268.5 .... _1~_2_/..- 02_ ........ 2_4._2 5. 6~1_-7_.5_ ........... _2_1__3"5.:5_ 3_10 4-- ..... 65__7. ........ ~62_5~ ._._~C _C ........... _0_ ........... _0__ ...... .C_ ........ 1~2_ O_ ........ .0._ ..... _0_'_5_ .......... ]_7_.3._6:6_ _1-7!~9_ ........ 2~66.6_ ..... _ 12/~-9/0~2 ...... _2'.4_? .......... 5"§5.7-4_ ..... 2~1~75._4, ..... _3.09 .... _5 ..... 6~5_5. ...... _5--97-- ........ _C_ .... ~ .... ~0_ ......... O_ ....... C_ ...... -9_0_ ....... 0_ ....... -6.__4 ....... _1_7`51._3 ........ )___73_4 .... ~_7_0 _9_ ...... __1~1_-6(0_2. ......... 25~6- .......... -5_-7.21.~3_ ..... _2._2_3.9:_3" .... 300 .............. 2.3 655 _. 5~9_7 ........ _(~ .... ~ ........ _0_ .......... _0 ......... ~. ........ -99 ...... _0 ...... _6._4. ...... !_77.4._7 ....... !7_57- ......... .2-7.4~.5 .... 1/~3_/._0_3~ .... .27.4 ......... -5_72_2..9 .... 22?0_:9," ._2_7.4 1.8 653 609 C C · 0 0 C 200 0 0.7 1775.3 1758 274.6 _1_/-9./.0~ 280 -5-66_.9._8_ ...... _2~8`'~.8 211 0.9 640 617 C C O O C 120 1.4 0.3 1826.1 1808 282.5 __'[_/_1`5./_0_3 .... 28_6 -69.!.3:~ ..... .25_3"._1~9 248` 1.0 636 612 C C O O C 102 0 0.3 1875.7 1857 290.1 '~-/-.2~0--3 300 601~:~6 .25"3`2-6.. 334 1.6 .... _6_4_2 ...... -60-_2_ C C _.0_ ....... _0_. .... C 25.-0- ..... -6:2. ...... _1:.! !8`~.6-_5. .... !.8.5-6 2_9_0-3 , .... _2(._19(Q3 312 _ 615_2:8 . 2~70-.8 ' ~3 !'3~ .......... ~ ..... C__. C ...... ~ ......... 9 ......... ~ . ~ ...... 9 .... p:~_. 19!7;5.. . .. ].89_8 . 2_96._6 -- --~1--(~...... 32~ I"- 6_15_3_._7. .....2~6_71_._7__._2~2 1.6 654 613 C C O O C 180 0 0.5 1918.0 1899 296.7 .... ~__2.8/0-3 ...... 330 ..... 63_20-r9._ `283"8:9 . , 24_8 0.8 630 609 ................... C C 0 0 C 8`4 ...... 0- ....... 0._2.. 19`5,~.1 _1935_ .... -302.3 _~.3/_ 03" 333 .... 6-3_93_:0- _291_!:0- .... 200. ;i:~ '~:~ ........... ~4 C. ~; 0 ..... 0 ' C 20 0 0.1 1958.0 1938 302.9 3/6/03 336 6468.5 2986.5 164 1.3 633 600 ~.. . C .................... ..... ~ '' 0 C 78 0 0.2 1971.2 1951 304.9 E2C Remedia~ion Table 4-1 Project Number 1801BK03 November 15, 2003 TABLE 4 SUMMARY OF oNSITE VE/GASS MONITORING DATA Mr. Fast Service Station 600 Brundage Lane Bakersfield, California Cumulative Cumulative Inlet Well Well Well Well Dilution Field Field Cumulative Cumulative Cumulative Date Calendar Operating Operating Flow Chamber Stack VE-2 VE-3 MW*INE-4 MW-8/VE-5 Air TPH in TPH out Lbs./Hr. Lbs. Lbs. Gallons Monitored Days Hours Hours (scfm) % LEL Temp. (°F) Temp. (°F) valve valve valve valve valve (ppmv) (ppmv) Extracted Extracted Destroyed Extracted 3/17/03 347 6469.1 2987.1 226 2.2 644 589 C C O O C 120 0.4 0.4 1971 4 1952 304 9 3/~5/0~ ..... 355 66(~0. !. 3! 7_8~_1 ~98 o.e 629 ....~ (~ C o_ ....... ~ ............ c 88 _. _0_ ....... ~..2_ ........ _2. 0_1__8._9_ ...... _1._99_9_ ......... _3_12_~,~ ..... 4/3/03 364 6872,3 3390 3 264 2.1 706 , 653 C c 0 O C 30 1 1 0 1 2041 8 2021 315 8 ~§~_0~3 .... 42_8 6-8~2._3 3390_,_3 ..... 1~.47,` 3.6 (~2~ '~ ....... C 6 ............ 6-'--: ..... :"~; i00 ..... ~)- .... ~0~2- ......... 20~4~,8 -~0~ ~i ~- .... _6/)0/0~3 ..... i___~J3_2_~ ....... _6._9_5~:~ ..... __3~1_77.~8_ _ _2_46~ _3;6, ..... 6_7_~5 ......... _5_8_5_ ..... ~C .... C ....... ._0_ ........... O~ ............ _C_.__.; .... 8_5 ........... _0_ ......... _0.:_:3_ ..... 2_.0_6_6_..7_ _2_0:4~_ ............. 3_1_9_._7_ .... .... 6j1_6_1_03__ ...... _~4_38 ........ 70~0_5_,4_ ..... 35~2_3.._4- .... 2__8~3_ 1.4 632 598 c c 0 0 c 120 0 0.5 2087.7 2067 322.9 Notes: scfm = standard cubic feet per minute LEL = Lower Explosive Limit ppmv = parts per million volume Lbs./Hr. = pounds per hour O = Valve Open C = Valve Closed PO = Valve Partially Open E2C Remediation Table 4-2 Project Number 1801BK03 November 15, 2003 TABLE 5 SUMMARY OF ONSITE HYDROCARBON MASS REMOVED USING VE/GASS (based on influent concentrations) Mr. Fast Service Station 600 Brundage Lane Bakersfield, California Month/Year HC Removed Cumulative HC Removed Influent Concentrations Flow Rate Run Time Daily Removal Rate (lbs/month) (lbs) (Dpmv) (scfm) (days) (lbs/day) . Apr-02. . 0 -0 0 0 0 0.0 May-02 1,~'i-~.-3 ....... i ,5:1-~:~3 '6:~ ~-~4 -. ....... -~-7 5612 Jun'02 339'4 ..... ! ,856:.8 .... 209 237 21 16.2 ' Jul-02 166:2 2'023:9 ..... ii.'i"..'i. 262 ' 2i6 ~' 18.5 Aug'02.. 179:8' 2,202,7 265 231 9" 20.0 Sep-02 13.2 2;2:16.0 ..'~:. 45. -_i .... .i ...~0 ........... 3 4.4 Nov-02__' 0.4_ .......... 2.,~.6:4_ ~4 ...................... _27_5. .......... ...0.._1 3.9 .De?0~ .... 51.6 2,267.9 53 271 11 ' '41~ Jan-03 152.6 2,420.5 140 ................ 273 12 2 12.5 Feb-03 156.1 ~ ~6~ ........... : ........... ~'i*~ .................... -2~§- .......... ~- ~ ~ .... Mar-03 109.1 2,685.~ 6-( ................... _21_8. ...... __2~ 0 4.7 Apr-03 13.6 ' · 2 699.4 · 59 236 3 ....... 4 ~ Where: Hydrocarbons Removed (lbs/month) = Influent Concentrat on,(ppmv) X 10~ X Influent Flow Rate (scfm) X 1 lb-mole/379.5 ft3 X 86 (lb/lb-mole) X 1440 (min/day) X Run Time (days/month) Cumulative Hydrocarbons Removed Based on Influent Concentrations (Since April 2002) 2500 '.'.' .... - .......... 50 i2000 . 40 f oo. . ' Apr-02 May-02 MAY-02 Jun-02 Jul-02 Aug-02 Sop-02 Oct-02 Nov-02 Dec-02 Jan-03 Feb-03 Month-Year I E2C Remediation Table 5-1 Project Number 1801BK03 November 15, 2003 TABLE 6 HYDROCARBON SUMMARY OF ONSITE MASS REMOVED USING VE/GASS (based on %LEL) Mr. Fast Service Station · ' 600 Brundage Lane Bakersfield, California ......... '1 HC Removed Cumulative HC Removed LEL Flow Rate Run Time ,v, omn,-,ua, I (lbs/month) I (lbs) I (%) I (scfm) I (days/m°nth)I Monthly Removal Rate (lbs) Apr-02 . 0 0 0° ~ 0 0 0 27 27 May-02 ' 1;'058:0 .............. i 05(~:"0 · 3~,~i~ ...... Jdl-02 328:-8 I ........... ;;;0-~):~ .................. -2;~4~iff .......... ~ i4 ..... 21 ' Augq~2 374.5 -2 ~-3;~ .......... ~,;~)~ ..... ~'§~ 9 .... . 149 0.1 Nov-02' :~; :i- -2 ,~-88';~) ....................... 2;'~? ....... 2-~-5 ..... i 8;i DeC:0-:~ ..... 3~5 ~' ................... ~ '~-i-67-' .............. ':~ ~-Y0 ........ 2:~'i' i'1 ............ - .... i i J~m_0._3 2~6:~. ............ _3._.._0_4~.4 1.5% 273 12.2 1i~.6 Feb_03 i. · 248:!: ' ~,~_1.'i_5_ .............. ,-'-'"-i-.~4g/o .......... ~-~- .......... ~5;8- . :i~5:7 . Mar-03 ..... 33!,_3 ~ 6~.8 .............. .... i~'°,;o ........ -~'~'~ 2~8 i~,.4 ' Apr-03. 4~:;~..; ~_6.7_-b..0 i;5~ .......... ;~-' -, 3.8 1~.( Jun-03 260.6 3,9~0'.5 · '~'; ~)';/;0 ........ ~ .... 9;8 ........ Where: * influent Concentration assume 100% LEL =13,800 ppmv calculated as hexane . LEL estimated from difference between oxidizer and stack temperature. 1% LEL = approximately 25° F difference Hydrocarbons (lbs/month) = Influent concentration (ppmv) x 10's X influent flow rate (scfm) x 1 lb-mole/379.5 cf x 86 lb/lb-mole x · 144Q min/day X run time (days/month) ' ' CumUlative Hydrocarbons Removed Based on %LEL (Since April 2002) . ...4000 ~ 35 ,3000 eE 20 ~2000 0 ' (~ 1000 .................................................................... ...' 10 0 : Apr-02 Jun-02 Sep-02 ' . Dec-02 Mar-03 Month-Year ! I E2C Remediation, LLC Table 6-1 Project Number 1801BK03 ~ November 15, 2003. TABLE 7 SUMMARY OF OFFSITE VF-./GASS MONITORING DATA Mr. Fast Service Station 600 Brundage Lane Bakersfield, California Cumulative Cumulative Inlet Well Well Well Well Well Well Dilution Fietd Field Cumulative' Cumulative Cumulative Date Calendar Operating Operating Flow Chamber Stack VE-6 VE-7 VE-8 VE-9 MW-11 MW-12 Air TPHin TPHout Lbs./Hr. Lbs. Lbs. Gallons Monitored Days Hours Hours (scfm) % LEL Temp. (°F) ,Temp. (°F) valve valve valve vane valve valve valve (ppmv) (ppmv) Extracted Extracted Destroyed Extracted 2/28/03 0 2352.50 2.68 212 1.1 1555 1450 3/40 C 0 0 0 0 0 210 0.2 0.6 1.6 1.6 0.3 3/3/03 .... 3- .... 2~4;1~8-,-6-~-- --'-69.~1-(~ ...... ~-- 4.5 1555 144~--- C --'~- ~ ...... ~'---~/~-0 3/40 '~ ....... -2~- 0 .... --06 3/6/03 6 '~,~.-5-~' 71.09 214 4.2 1550 1445 0 0 0 0 0 0 0 200 0 0.6 3~6~3~'' 6-' -2427.~4 ..... ~'~24 214 4.8 1605 1486 O O O O O O O 200 0 0.6 36.5 104.5 ' 16.3 Notes: scfm = standard Cubic feet per minute LEL = Lower Explosive Limit ppmv = parts per million volume Lbs./Hr. = pounds per hour O = Valve Opea C = Valve Closed 3/4 0 = Valve Open 3/4 E2C Remediation Table 7-1 Project Number 1801BK03 November 15, 2003 TABLE 8 SUMMARY OF FREE-PRODUCT/GROUNDWATER PUMPING MR. FAST SERVICE STATION 600 Brundage Lane Bakersfield, California Date Gallons Pumped Accumulative Gallons 4/8/03 ............................. 2__1_5.0 .. 2,150 4/23/03 2 710 4,860 5/6/03 2 620 7,480 5/21/03 2 470 9,950 6/5/03 . 2.430 12,380 6/26~3 .2__6_4~ 15,020 7/10/03 2 910 17,930 7/28/03 2 860 20,790 2~50_ 8/28/03 2 640 25,680 ..................... 9./-]-.!-/-0-3 ........................ ~2 -7--60. .................................... 2~ ~_40 9~2~_~_3_ 2,28O .~ . .10/9/_0_3 ............ , ................ __2_,77~0_ .................................. ..3.3 10/24/03 2,3.9..0~. 35,880 ! I E2C Remediation, LLC Table 8-1 ; Prqiect Number 1801BK0~1 November 15. 2003 ,APPENDICES Appendix A Second Quarter2003 Groundwater Purge Data Sheets Appendix C Second Quarter 2003 Groundwater Analytical Laboratory Report Appendix B Third Quarter 2003 Groundwater Purge Data Sheets Appendix D Third Quarter 2003 Groundwater Analytical Laboratory · Report Appendix E Copies of Non-Hazardous Manifests I E2C Remediation Appendices Project Number 1801BK0,3 November 15. 2003 APPENDIX A Second Quarter 2003 Groundwater Purge Data Sheets E2C Remediation Appendix A ~ £aCJ~emed[ation, ZLC .. Groundwater Scientist$ :£nvironmentalConsultant$ Water Quality Sampling Record I 5300 Woodmere Drive, Suite~OS; 8ake~a, Ca~o~.~a 933~3 . and Well Development Data , Telephon& (661) 831-6906 / Facsimile: (661) 831-6234 ' 5~PLEID/WELL~: ' ~U--'i ' ' DEPTH TO WATER:. ~ E~C REM. PROJECT ~: TOTAL D~PTH OF WELL: PROJECT NAME: ' ~ ~ ~ WELL DIAMETER;. J DATES~IPLED: 6 ilo ~oB .CASINGVOLUME:.., S~PLED BY: ~ ~ pURGE METHOD: Well Capacity:, ]"- O. 1632 gallon/linear foot 4"- 0.65]8 gallon/linear 6"- 1.4688 gallon/liaear S.kMPLED AT: FT. FINAL DEPTH TO WATER: FT. ~ ~SlNG VOLUMES = ~- ~ ~ GALS. I E2C REM EDIATION, LEC WATER QUALITY'Q''o.-, . ,"m',... x,,--.,,.: RECORD " - Groundwater Scientists: Envir.~nme,~ta~ Co,%~uhan.',s AND V,,-'LL DEVELOPMENT DAT-A""'" ' 53C0 :,'/o.odm-~re Dr., Suhe 105 B~kersfie',d, CA 93313 I PURGE CHARACTERISTICS TE,'.IP pH SEC SAM?LE RE,',:ARKS TIME INTAKE RATE CUM. VOL WELL VOL (?) (UNITS) (,umhos/ CONTP. OL DEPTH (GPM) (GAL) PUMPED cra) NO. (COLOR, TURBIDITY, ETC.) 2H CALIBRATIO,',~ / SYANDARDIZED FFER SOLUTION I pH 4.01 I F I 7.0 I pH 10.0 W~ll C,~¢~:i{y: 2' - 0.1632 ga!lo~'linear foot ~ ,.~, ~ [ 4l' ' 0.6528 ga[lo~'linear SPECIFIC ELECCRI~AL CONDUCTANCE- CALI~RATION / STANDARDIZATION ~,~ F' I I ~ I I NSTRUMENT READING I I I JPLEO AT: /~.'/~ ~. FPLAL DEPTH TO WATER: "~.~ FT. 3 CASING VOLUMES~~ GALS~ ';OTES: £a. C J? em ediatio n, 'ZL C ' ' aro,.,a,.,,ate; Sae,,.s.: E.~,i,-o,~..'ta~ Co,,s,,~ta,,t, Wa t e r O u a Ii t y S a m p ! i n g R eeo rd 5300 Woodmere Drive, Suite 105; Bakersfield, California 93313 'and Well Development Data Telephone: (661) 831-6906 / Facsimile: (661) 831-6234 SA~PLE~D/WEtL~:. lV'~O 3 DVTHTOW^TER: L/2_. ? £~C REbq. PROJECT #: TOIAL DEPTH OF PROJECT NAME:. j~k/~,¢ ...,4~::~--S '3"-- WELL DIAMETER;, '~-" · DATE SAMPLED: ~ /1~ / SAMPEED BY: ~'-~-,8 ~ PURGE METHOD: · :"""'-'-";':PURGE CHARACTERISTICS..'. "-" '" TEMP pH SEC RI:MARKS ;',g:c~,3 Q'~-o- ..%..0 0 /,3¥.0 '7.0'3 .15 ,, ,, o'-2o~.,, ,' ~, /~5.z 6 .'/¢ ,/5' '~, ,, Well Capacity: ~."..0.1632 g~llon/line,~r foot 4'- 0.6528 gallon/linear foot 6". 1.4655 g~llon/linear feot .-. . · .. . . -: ... . .~-..,.. -..:: · :. ..... ~ . ;',:.::7.: &'.. SAMPLEDAT: ~(:'(' ,.(...) FT. FINALD£PTHTOWATI:R: ~7. lO FT. 3 CASINGVOLU,'.,IES - .S' YY / 'GALS. NOTES: · E~C REMEDIATIO'N, LLC WATER QUALITY S,M.,!P-ING RECORD '" Gr,sund',¥a'.er Scienlia:$: En',4ronmenta~ Consukan~$ AND V,,'-LL DEVELOPMENT DAT'A'~'' ' 53C0 V/oodmere Dr., Suite 105 Bakers,'ie:d, CA 93313 .S&MPLE ID OR WELL I"IO.: ,/~,~,,¢~../-.--¢-'// D_=PT:-t TO WATER: 4:~//¢~...~ t O JECT 'NO.: Z/~.?/~/~-':~//~,//~'~ / TOTAL DEPTH OF ~' ,'ELL:S" ~_~./~- ,/ f". OJECT NAME: WELL DIAMETER: ~'"¢ .............. i i.... I PURGE C~-tARACTERISTICS TEMP pH SEC SA,',I.= L E TIME I INTAKE RATE CUM. VOL WELL VOL (?) (UNITS) (:.Lmhos/ CONTROL DEPTH (GPM) (GAL) PUMPED cra) NO. (COLOR. TURSIOITY, ETC.) 2 -¢. ' d, r,, g7,.lq ,Ax /i I I "-7- ,H CALIBRATION / S'i'ANDARDIZED SOLUTION I' pH4.01 f.'.17.0 j pH10.O I W,=IICa.ca.:il7: 2'-O.1632ga!loWlinearfco', ~ t 4' - 0.6523 gallon/linear foot i,~;TFic ELEOfRI~O-'AL CONDUCTANCE-C~TIO~? STANDARDIZATION __~ ,ISTR'JMENT READING J T i ;OTES: · E2O REMEDIATION, LLC I WATEB ©UALITY SAM?LING RECORD Groundwater Scientists: Environmen~a~ Co,%uhan~s AND V, ~LL DEVELOPL'IENT DAT-A'~ :' 5300 W~odmere Dr., Sui',e 105 8~kersRe~d, CA 93313 ......... SAMPLE ID OR WELL NO.: ~'~ ¢~ DEPT:~ TO WATER: , ROJECT NAME: .. WELL D~AMETER: ~// v~r;'~,- ATE: ~//~/~2 .- CASING VOLUME: ~, ~/ ~ .... /" PU~ ~kARAOTERISTICS TE~.IP pH SEC SAMPLE ~ TI' = ~ INTAKE RATE CUM VOL WELL VOL (?) (UNITS) (~amhosl CONTROL ' .... / DEPTH ~GP~,~) (GAL) I PUMPE0 cra) NO. (COLOR, TORBOI~, ETC.) 2H~ALIBFIATION/S"FANDARDIZEO · .&.EESiFIC ELEC'i:RI~'C-AL CONDUCTANCE- CALIBRATION/STANDARDIZATION '~;L SOLUflO,"ip,"JdO$/OM ~' 25'C" I . 74 I 718 1413 68,'58 ';OTES: WATER QUALITY SA,',;, ~_h iG RECORD Grc, und','/ater Scienli$~s: Environmenta, Con-~u~I=n.',$ ' AND WELL DEYELOP;,'IENT DAT-A'"'" " I 53co Wsodme:eDr., Suite 105 Bakersfield, CA 93313 ................. It INTAKE RATE CUM. VOL WELL VOL (F~) (UMITS) I DEPTH (GPM) (GAL) PUMPED cra) NO. ('COLOR, TURBIDLY, ETC.) i I ~H CALIBRATION / STANDARDIZED ' · FFER SOLUTIO>I I pH 4.01 l I 7.0 t pH 10.0 ~,'/~II Ca,ca:i!:,': 2' - 0.1632 ga!lo,-'Vlinear 4~ - 0.6523 ga~lon,'linear f,:,ot " I 6' - 1.4:~3:~ ga!lon,/linezr ITRU;,IFNT RE '..DING I I ~.~ci.-'~c ~,~0¢,~c'-,~ c&,~uc~L,~c~-~,U~T~Oi~} S~,~,~Z*TIO~ · I'~?IL SOLUftO,~r_, p'.HO$ / C,~.! ¢ 25 'O'II 74 II 7,8 14,3 68~8 " 6.~.-'4: " l ~TR'J,MENT READING ] [ r I -.------- I .;OTES: £aC ]?emediatio n, £L C .. Groundwater$cientists: £nvironmentalComult~nt~ Water Quality Sampling Record 53~ Woodmere Drive, Suite 105; Bake~field, California 93313 and Well' Data Development Telephone: (661)831-6906 / Facsimile: (661)831-6234 S~PLEID / WELL ~: . ~O-~ DEPTH TO WATER: REM. PROJECT ~: TOTAL DEPTH OF WELL: PROJECT NAME:. ~ ~ ~' ~ WELL DIAMETER; S~MPLED BY: ~ PURGE METHOD: "-" '" .. '."" ~ .' - '": '..~? .- "" · ..... ':: "' ..' '" "-:<' ' ' ' · .,:'.:..,2:.:._' · : v"'.':'?i[URGECHA?~TERISTIC?':'." ',". TEMP pH SEC INTAKE ~TE CUM. VOL ~ELL VOL (~ (UNITSJ (mmhos/cm) (COLOR, TURBIDITY, ETC.) DEPTH (GPM) (GAL) PUMPED WdlCapacky: 2"- 0.16~2 Ballon/linear fool 4". 0.6528 8~llon/Jine~r 6"- 1.4688 gallon/linear fool : .. . . · .... . .: . .- . . . .,.,- . -.. ..:: · v ..-.. AT: FT. F~NAL OEPTH TO WATa: FT. ~ ~S~NO VOLU,~t~S = ~, 6 ~ 6ALS. ' £2C Remectia ion' LL C .'.. 5300 V/oodmere Drive, Suite 105; Bakenfield, California 93313 and Well Development Data Telephone: (661)831-6906 / Facsimile: (661)831.6234 sAMPLEID/WELL#: JPV~Ld ~ DEPTH TO WAT£R: E~C REM. PROJ£CT #: TOTAL DEPTH OF WELL: ~'~ PROJECT NAME:. ~ m "~,J--:~ '~ WELL DIAMETER; ~'- SAMPLED BY: -~e PURGE METHOD: '.. . .. . . . . .' . ': ..-'~ .. ., .. . ..... ...:' ., . .. . ...=5. .. , ,..:'.:..~.{':.~.... :~.'-' ','.'-:':PURGE CHARAC-T~RISTICS ..'. "'-" '" TEMP pH SEC R£MARKS DEPTH (GPM) (GAL) PUMPED Well Capacity: l". 0.1 ~32 gallon/linear foot' 4"- 0.652~ gallon/linear foot 6"- 1.46SS gallon/linear kot : ... , · ' ': . . ': :'' . '.':'. '. '.': " .' '-'" S~lPttO AT: ~ ~ ,O FT. ~INAL DEPTH TO WATER: ~' I j ". ~ ~SING VOLUMES = 5 '~ ( GALS. NOTES: I · E2C REMEDIATION, LLC WATER QUALITY SA'.,'PLING RECORD .... Grc, und',,/ater Scientists: Envir.2nmenta~ Consu!ian.ts AND WELL DEVELOP;,'IENT DAT-A""" " · 5300 ','/:odmere Dr., Sui',e 105 Bakers~!e;d, CA 93313 S~,'.RLE ID OR WELL NO.: DEPTH TO WATER: )JECT NAME: .... ~/~ _ ~ WELL D~AMETER: ~XPLED BY; METHOD OF PURGING: ' ' PURGE C~ARACTERISTICS TEMP pH SEC SA,MPLE ~IX~E INTAKE RATE CUM. VOL WELL VOL (?) (UNITS) (~mhos/ CONTROL - DEPTH (GPM) (GAL) PUMPED c'm) NO. (COLOR, TURSiDI~, ETC I..w . ~ ~.,~ ~.~ .~¢ ,-, I ~H ~ALIBRATION / STANOARO~ZED IFFER SOLUTIO~I [ pH 4.01 ~ t 7.0 I pH 10.0 Well Cape:fry: 2' - 0.1632 gaHor/linear lcD', ~ , I I 4'- 0.6523 gallo~'linear foot TRUMENT R~ ',DiXG I ~ I 6'- 1.453~ g~lo~/linea? ~¢FIC ELECf~I~EAL CdNgUCT~NCE - 8ADS~TIO~ STANDARDIZATION ~3S/CM ~ 25C I 74 I 718 1413 I ,6858 I 5s~4.~ II NSTRUMENT READING T [ i ~ ,;OTES: t · E=C R. EM EDIATI ON, LLC I WATER QUALITY,~e" * 'P'.-,..,,, ,._,'NG RECORD" Groundwater Scientists: Envir.anmental Consu~:-.an.'.s AND V', ,-LL DEVELOP,'.'IEr',IT BAT-A-'"'-' 53CO Woodme;e Dr., Su[:e 105 Bakersfield, CA 93313 .,~ ' - "-'~ ' OJECT NO.: /~_'/_.-2' ~¢_p/~z TOTAL DEPTH OF WELL: .~'"'/, OJECT NA,,,,E: "f~"¢"- ~¢./..zl,~ WELL DIAMETER: c:¢ TE: Cb~,,~3 ; . / CASING VOLUME: //./' ¢ ga::ons ' MPLED BY: ' ~¢ ¢4~,,./¢, ~..~_/'./ METHOD OF PURGING: ~.,~....~_,.._.. - (/, I SE° TIME INTAKE RATE CU?.I. VOL WELL VOL (?) (UNITS) (~.~mh.os/ CONTROL DEPTH (GPM) (GAL) PUMPED cm) NO. (COLOR, TURBID! ~'FY, F__TC ) ' ~H ;ALIB RATIO~',I / STAN DAR DIZED FFERSOLUTION I pH4.01 I ~ 17.0 I pill0.0 We!ICa.ca:it;/: 2"- O. le32(.;a!Io~'hn ar JE,'IT RE '..Oi>~G I I I 6' - 1.455~ ga~loWlinear... ¢.2o~ ~ECCFIC E[ECCRI~¢AL C~NDUCT~NCE - CALI~RATION / STANDARDIZATION ~LSOLUTIQNFMROS/CM ~ 25C' I 74 I 718 1413 6868 I 5~43 I NSTRUMENT READING ,iOTES: EaC Remediatio n, ZL C .. aro,MwaterSdemist,: EnvironmentalConsultant, Water Quality Sampling Record 53~ Woodmere Drive, Suite 105; Bake~field, California 93313 and Well Development Data Telephone: (661)831-6906 / Facsimile: (661)831-6234 INTAKE/ ~TE I CUM. VOL I WELL VOL (~ (UNITS) (mmhos/em} {COLOR. TURGIDITY. ETC.) DEPTH (GPM)J (GAL}J PUMPED Well Capacity: 2". 0.1632 ~allon/linear fool 4"- O.~5~ gallon/linegr foot 6". 1.4633 gallon/linear feot AT: FT. FINAL DEPTH TO WATER: FT. 3 ~S~NG VOLUMES = ~- ~[ GALS. I I I Ea C R e m e dia tio n, ],LC _. arou, dwater S¢ie, fist, : fnvironmental Comultant, Water Quality Sampling Record 53~WoodmereDrive, Suite 105: Bake~field, Califomia 93313 and WellDevelopmentData Telephone: (661)831-6906 / Facsimile: (661)831.6234 E~C Rm. PROJECT .: TOTAL DEPTH'OF WELL: PROJECT N~IE: .. ~ ~ ~ WELL DIAMETER;. DATES~MPLED: ~?0 /0~ CASlNGVOLUM~:_ '3.'S ' · " '- ' .. " ' ' '} ., . . . . ..'r .. "" . .... :C ', - .... ~; '..~. · ~ : . ..~'. z..~.:. :,~..' ThMfi INTAKE ~TE CUM. VOL WELL VOL (~ (UNITS) (mmhos/cm] (COLOR, TURBIDITY. ETC.) D~PTH (GPM) (GAL) PUMPED Well Capacity: 2"- O. 163 ] gallon/linear foot 4'- O.652~ gallon/linear foot 6". 1.4688 gallon/linear ... . · . :. , . .: . · . . .... ..:-.... ..:: . ....... ?.~::.(7:&t. S&MPLED AT: . FT. FINAL DEPTH TO WATER: FT. 3 ~SlNG VOLUMES = ~' ~ GALS. NOTES: ! ! Groundwater Scientists : Environmental Consultants Water Quality Sampling Record ?00 Woodmere Drive, Suite 105; Bakersfield, California 9331 and Well Development Data Telephone: (661) 831-6906 / Facsimile: (661) 831-6234 ~ME INTAKE I ~ I CUM, VOL J WELLVOL (F©) (UNITS) (mmhos/cm) (COLOR, TURBIDLY, ~C.) DE~ (GPM) (GAL) Well Capacity: ~ 2" - 0.1632 gallon/linear foot 4" - 0,6528 g~llon/linear foot 6" - 1.4688 gallon/linear foot SAMPLED A ~. FINAL DEP~ TO WATER: ~. 3 CASING VOLUMES = GALS. ! ! 'I " o.-w,:, ~_~ ,~ RECORD I E2C REMEDIATION, LLC WATER QUALITY °""~' ,"'¢ Grc, undwater Scier, tis~s: Envir.anmental'Consul~ar,~s AND V', ,-LL DEVELOP;.'IENT DAT'A""""' II 5300 V/s.'$dmere 'D}., Suite 105 Bakers~!erd, CA 93313 . . . OJECT'NO.: ./F~)//,~/~/_.9/ TOTAL DEPTH OF WELL: /""~. ~:." fl , .... I PURGE C'HARACTERISTICS TE;4P pH SEC SAM?LE REM-ARKS TIME INTAKE RATE CUM. VOL WELL VOL (?) (UNITS) (I.:mhas/ CONTROL DEPTH (GP,Mi (GAL) PUMPED cra) NO. (COLOR, TURBIDI','-Y, FTC ) ~H ~2ALII~ R,(TIO~~ D' ' F~'' SOLUTIOX I pH 4.01 I F 7.0 I pH 10.0 V/ell C~.ca:i[7: 2' - 0.1632 ga!h2~'~imear ~ I 4' - 0.652~ ga:~o~'linear TRUME,~IT RE '..DING I I I 6, - 1.4~55 gallo&/linear 5PE~FiC ELECTRILCAL CONDUCTANCE- CALISR~TION / STANDARDIZATION . C,NI'~ 25C' I 74 I 718 1413 6858 I 5~43 I F ~ I , ~.~,~oo ,,~:. /~: ~0 ~. ~x.~ D?=H 'rD ~'/,=s~: ~O. ¢~¢ ~=. 3 CAS,NO VO~U¢.'~=S% ~, E~ ' OA~S. , / - / LLC WATER QUALITY SA:v!PLING RECORD C REP,,,1EDIATION AND WELL DEVELOP;.,1EN'F DAT'P,'''"~ -' Grc, und',¥ater Scisn[is~s: Envir.onmen~a, Consu~[an!s ~ 5300 Wsodmete Dr., Suite 105 B.~kers,'!e~d, CA 93313 ................ "ATE: 4~/~ ¢ CASING VOLUME: ga::ons ' ~ ' ~ PURG~ C~ARACTERiSTICS TEMP pH S~C ' SAMPLE . RS,'.'.A~KS ~. TIM~ INTAKE ' RATE CUM. VOL WELL VOL (?) (UNITS) (~mhas/ CONTROL ~ .~ D ~TH (GPM) (GA~) PU¢~tP=O cra) NO. (COLOR, TURS;DI~,ETC~ . i pH CALIBRATION / STANDARDIZED F'¢ h' I I t 4'- 0.6528 gallon/linear fo, or .TRU;,I. ENT RE ',DING I ] [ 6' - 1.45S3 ga!loWIine.'~r .~J~ECIFIC ELECTRILCAL CO,',,IDUCTAN'CE - CALISRATION / STANDARDIZATIO,"I iLSOLUTION $:,~.h::{'OS / GM"@ 25'C' I 74 I 718 1413 6888 I 5S~43 I I,',J,=LEO AT: FT. FINAL DEPTH TO WATER: FT. 3 CASING VOLUMES= GALS. · REMEDIATION, LLC WATER QUALITYo.-,:.,:,°" ,,~,,_ ,v,-',,~ RECORD '" Groundwater Scientists: Env[r.:::>nmenta[ Consu!t~nts AND ~', ~-LL DEVELOPMENT DAT-A'''"''~ 5300 V/sodmere Dr., Suite 105 Bakers~ie;d, CA 93313 S&MPLE ID OR WELL NO.: ~,.~..J-/$-~---'.~ DEPTH TO WATER: .f'~. ~,, ~¢ f't IROJEOT'NO.: /,¢~_ -,/~//~/ TOTAL DEPTH OF WELL: /"~¢,~, ,..~) f.: It'.iL INTAKE RATE CUM. VOL WELL VOL (?) (UNITS) (.,.tmhosl CONTROL DEPTH (GP,*,I) (GAL) PUMPED cra) NO. (COLOR, TURSID!TY, ETC :)H~ALIBRATION/STANDARDIZED ~IFFER SOLUTION ' ' I pH 4.01 ~' t 7.0 pH 10.0 Well Caca:ily: 2' 0.1632 h 4' - 0.652~ ga',lo~'linear foot ;TRUt,IENT RE '..DING J I 6' - 1.463~ ga~lo~/iinesr.. ~ECIFIC ELECORI~AL CONDUCTANCE- ~ALIS~TIO~ STANDARDIZATION ~LSOLUflONFMHOS/CM ~'250' I 74 I 7~8 ~ 1413 ~ 6868 I 5~4:3 I NSTR~JMENT READING ] ~ ~ [ I MPLEO AT: /~:/~ ~. FlOrAL DEPTH TO WATER: ~,/O FT. 3 CASING ' ~ E2C REMEDIATION, LLC WATER QUALITY S.'-',MPLING RECORD Grc. undwa:er Scientists: Envlr.2,.m .... a, Coaou ..... AND V', ~LL DEVELOP;.'IEN¥ DAT-A'""' ' 5300 V/~,odmere Dr., Suite 105 B-~.kers;ie',d. CA 93313 · S..k',.PLE I?.'OR WELL NO.: //'~'"-//¢ DEPTH TO WATER: / !ao.J~cr ~.~o.: /~¢i ~A¢f TOT,, [~PrH O~ ,,V~U_: iATE: '/¢', .///,,9./~ "~. CASING VOLUME: AM?LED BY; i.~_.,,~ ~/Y~??,. ¢/ METHOD OF PURGING: PURGE CHARACTERISTICS TEMP pH SEC ,.V ~=L~ REMARKS · TI:,;: INTAKE . RATE CUM. VOL WELL VOL (?) (UNITS) (:amhos/ CONTROL DEPTH (GPM) (GAL) PUMPED cm) NO. (COLOR, TURBIDITY. ETC.) ! ! IpH 72ALIBRATIO;'I / SI'ANDARDIZED .~FFER SOLUTIO~ t pH 4.0'i I l t 7.0 I pH 10.0 ~,'/e!l C-~.ca;i[y: 2'- 0.1632 (.;a!lo.-~,;linear ' L I [ 4' - 0.6528 ga!Io~'linear foot ,tENT RE '..E)iNG I I I 6' - 1.455~ ga!lon,Oinezr ,mm~ECiFiC ELECi~RI~-:'C:AL CC~,,1DUCTkNCE- eAL:IS..~TIO'~} STANDARDIZATION L"SOLUTiONp,M,~'OS/CM @25C° I 74 I 7~8 ~413 6858 I 5-3~4~ :NSTRLI,MENT READING ] T Fi-----"-q ._-------- , , ,= _ GALS. I,MPLED I',T: FF. FI;IAL DEPTH 'FO WATER: FT. :3 CASING ~,O.U. ,_S- ,,OTES: o,l/., e,,J,..,... ~ . "~',&--"- I E2C R.EMEDIATION, LLC. WATER QUALITY SA;',,!PLING R~CORD · Groundwater S¢ienli$~$: Environmental Consu':[an.t$ AI*Q D ¥, '~''~ i,'-/~i'LL DEVELOPMENT BAT-A-*"" -' 53C0 V/:,odmere Dr., Suite 105 Bakers;!e:d. CA 93313 SAMPLE ID OR WELL NO.: ,/~¢,..,/., / r-~_.j~ DEPTH TO WATER: ,~r" IROJ=CT ~', O.: /ED[ ,~¢¢,~¢]<~D ,/ TOTAL DEPTH OF WELL: )ATE: ~//'~¢~.'. ~ CA S h",'G VOLUME: g-a::ons ' ;AMPLED BY; , //,-'k2//.. METHOD OF PURGIh~G: / I: h".ITAKE RATE CUM. VOL (UNITS) DEPTH (GPM) (GAL) PUMPED cra) NO. COLOR, TURSIDITY, ETC.) i pH CALIBRATIO;I / STAHDARDIZEO SOLUTION [ pH 4.01 I F t 7.0 [ pH 10.0 Well Ca.caSb': 2"- 0.1832 ga!lon,'linsar 4" - 0.6523 gallon/linear ~.~ECIFIC ELECTRILOAL CONDUCTANCE - CALI~RATION / STANDARDIZATION IL SOLU[IL)N pMdOS / Cb,! ~' 25'C' I 74 I 718 14~3 6868 I 5s~40 I NSTRU,MENT READING J J J J I,,',.IPLEO AT: FT. Fh'LAL DEPTH TO WATER: FT. 3 CASING VOLUMES= GALS. E .C REMEDIATI'ON, LLC WATER QUALITY.SA:'..!PLING RECORD Grc,,,.Jndv/ater Scientists: Enviraamenta. l Con.~ukam'$ AND V/ELL DEVELOP;.'IENT DAT-A''"'~ " i 5 360 'W:,.:dme:e Dr., SuP, e 105 B,kers,'ie',d, CA 93313 .......... i, ROJECT N.~,ME: ~ WELL DIAMETER: '. TIME h',ITAKE RATE CUM. VOL WELL VOL (?) (UNITS) (,,.tmhos/ CONT,~OL DEPTH (GPM) (GAL) PU,"vlPEO cm) NO. (COLOR, TU,-RBID!iP¢, ETC ) ~H CALIBRATIOH / STAHOARDIZED .q~ FFERSOLUTiO."I I pH4.01 I ~.' t7.0 I pill0.0 I ',,'lellCa¢a:i[y: 2'- 0.1632ga!Iop,'finear~cot SPECiFiC ELECTRILCAL CC~NDUCTAHCE - CALlS. RATION / STAHDARDIZATIOH t~jpIU SOLU ftbNF' ~.d'.~H O-S"7 C M""~ 25 C' II 74 Il' 718 [ 1413 6868 Il 5B~43 Il NSTRU,",IENT READING 'r i ]' I ..~,'1, 'i ¢- FT. 3 CASING VOLUMES= ~'r?--/'/ GALS. IMPLEDAT:_ ,L/.',~ FT. FI,'IAL DEPTH 'FO WATER: (.~rf. ,2 ,. - -- TES: " 'I REMEDIATION, LEC WATER QUALITY SA:,.!PLh',iG RECORD" · Or,~und','~-~'.er sci~.n~is~: Envir.anme,q~¢l Con~ur[¢~ A~40 V', ~LL DEVELOPMENT DAT-~-~ " 5300 V/~odmer~ Dr., Suite 105 8~kers~e;d, CA 93313 iATE:AMPLEOBY: ~,' ,¢' ~¢..-: METHOD OF PU*GINO: DEPTH (GPM) (GAL) PUMPED em) KO. (COLOR, TURgiDlY, ETC.) ~H CALIB RATION / STAI'IDARDIZEO .............. FFER SOLUTION I pH 4.0t .t.7.0 I pH 10.0 We!l Capa;i~y: 2' - O.1832 ; I t 4' - 0.6525 ga',fon,'linear ;TRUM E,"IT RE '..Dh"~G I I ' 6' - 1.4533 ga~lo~/linesr. 3J:~iFIC ELECfRI[C-AL CONDUCTANCE- C~TIO~) STAND,.~RDIZATION ~o-3-7-c~ ~,, 25c, I 74 I 718 1413 6858 I 5~,~4..~ I I,~? F' I I I I ,',ISTflUMENT READING I I I I I,.h=LEDAT:' /~,~-.'¢~ FT. Fi;.,'AL DEPTH 'FO WATER: /'/(~...~¢ FT. 3CASh'4OVOLU:,IES~/F(-:, GALS. ,;OTES: 'I I Pro_iect Number 1801B/~0~ ' November 15. 2003 APPENDIX B Second Quarter 2003 Groundwater Analytical Laboratory Report I E~C Remediation Appendix B · Chain of Custody Form Client Name: E..C Remediation, LLC 661.831.6906 fax 661.831.6234 Analysis Requested Sample Matrix Project Name: ~V~ ¢. -.(~'"~, ~'1-' Client Address: 5300 Woodmere Dr., Suite 105. Bakersfield, CA 93313 ~ ~ ~ ~ e e ~ Aqueous Project Manager: ~L ~ ~ ~° ~ ~ < ~ ~ ~ ~ Soil Sampler Name: A~ ~ Sample Date Sample Time 8ample Description and Container Type ~ ~ ~ ~ > ~ ~ ~ 3 ~ Comments Turnaround Time Requested: Relinquished By: v- - ~ Date: ~({~[n~ ished By: Received By: '~ Date: 6((,/d'~ Received By:Date:Date: Halcyon Laboratories, :Inc. EPA 8260B. Laboratory Report Water Sample Results in ug/L Certification # 1920 I CLIENT: E2C Remediation, LLC 5300 Woodmere Drive, Suite 105 i Bakersfield, CA 93313 Project ID · Mr. Fast I Report Date · 6/17/2003 i Sample ID · 5637/Travel Blank I Analyte Result Method RL Units $ Oxygenates I t-Butanol (TBA) Tert-Butyl Alcohol ND 2.5 ug/L Methyl Tert-Butyl Ether (MTBE) ND 0.5 ug/L I Ether (DIPE) ND 0.5 Diisopropyl ug/L Ethyl Tert-Butyl Ether (ETBE) ND 0.5 ug/L Tert-Amyl Methyl Ether (TAME) ND 0.5 ug/L I BTEX Components I Benzene ND 0.5 ug/L Toluene ND 0.5 ug/L Ethylbenzene ND 0.5 ug/L I m & p Xylenes ND 0.5 ug/L o Xylenes ND 0.5 ug/L I Internal Standards Results % Recovery I Benzene, fluoro 50.0 100% Benzene-d5, chloro- 50.0 100% i · 1,4-Dichlorobenzene-d4 50.0 100% Surrogate Standards I Methane, dibromofluoro- 49.9 100% 1,2-Dichloroethane-d4 55.7 1 ! 1% Toluene-d8 53.7 107% I p-Bromofluorobenzene (BFB) 46.8 94% EPA 8260B Laboratory Report Water Sample Results in ug/L Certification # 1920 CLIENT: E2C Remediation, LLC 5300 Woodmere Drive, Suite 105 Bakersfield, CA 93313 Project ID · Mr. Fast Report Date · 6/17/2003 Sample ID · 5638/MW-3 I Analyte Result Hethod RL Units 5 Oxygenates I t-Butanol (TBA) Tert-Butyl Alcohol ND 2.5 ug/L Methyl Tert-Butyl Ether (MTBE) ND 0.5 ug/L I Diisopropyl Ether (DIPE) ' ND 0.5 ug/L Ethyl Tert-Butyl Ether (ETBE) ND 0.5 ug/L Tert-Amyl Methyl Ether (TAME) ND 0.5 ug/L I BTEX Components i Benzene ND 0.5 ug/L Toluene ND 0.5 ug/L Ethylbenzene ND 0.5 ug/L i m & p Xylenes ND 0.5 ug/L o Xylenes ND 0.5 ug/L I Internal Standards Results % Recovery I \Benzene, 50.0 100% fluoro Benzene-d5, chloro- 50.0 100% 1,4-Dichlorobenzene-d4 50.0 100% I Surrogate Standards I Methane, dibrom°fluoro- 51.7 103% 1,2-Dichloroethane-d4 54.7 109% Toluene-d8 54.3 109% i p-Bromofluorobenzene (BFB) 47.0 94% I 1 EPA 8260B Laboratory Report Water SamPle Results in ug/L Certification # 1920 CLIENT: E2C Remediation, LLC 5300 Woodmere Drive, Suite 105 Bakersfield, CA 93313 Project ID · Mr. Fast Rep°rt Date' 6/17/2003 Sample ID · 5639/MW-1 Analyte Result I~ieth°d RL Units 5 Oxygenates t-Butanol (TBA) Tert-Butyl Alcohol ND 2.5 ug/L Methyl Tert-Butyl Ether (MTBE) ND 0.5 ug/L Diisopropyl Ether (DIPE) ND 0.5 ug/L Ethyl Tert-Butyl Ether (ETBE) 'ND ' 0.5 ug/L Tert-Amyl Methyl Ether (TAME) ND 0.5 ug/L BTEX CompOnents Benzene ND 0.5 ug/L Toluene .ND 0.5 ug/L Ethylbenzene 8.68 0.5 ug/L m & p Xylenes 90.9 0.5 ug/L o Xylenes ?.4? 0.5 ug/L I Internal Standards Results % Recovery I Benzene, fluoro 50.0 '~ 100% Benzene-d5, chloro- 50.0 100% 1,4-Dichlorobenzene-d4 50.0 100% I Surrogate Standards I Methane, dibromofluoro- 49.2 98% 1,2-Dichloroethane-d4 53.9 108% Toluene-d8 53.3 107% ip-Bromofluorobenzene (BFB) 44.5 89% EPA 826OB Laboratory Report Water Sample Results in ug/L Certification # 1920 CLIENT: E2C Remediation, LLC 5300 Woodmere Drive, Suite 105 Bakersfield, CA 93313 · Project ID · Mr. Fast Report Date · 6/17/2003 . Sample ID · 5641/MW-7 Analyte Result Method RL Units $ Oxygenates t-Butanol (TBA) Tert-Butyl Alcohol ND 2.5 ug/L Methyl Tert-Butyl Ether (MTBE) ND 0.5 ug/L Diisopropyl Ether (DIPE) ND 0.5 ug/L Ethyl Tert-Butyl Ether (ETBE) ND 0.5 ug/L Tert-Amyl Methyl Ether (TAME) ND 0.5 ug/L BTEX Components Benzene ND 0.5 ug/L Toluene 2.87 0.5 ug/L Ethylbenzene 10.4 0.5 us/L m & p Xylenes ' 2,160 0.5 u~/L o Xylenes 435 0.5 ug/L Internal Standards ' Results % Recovery I Benzene, fluoro 50.0 100% Benzene-d5, chloro- 50.0 100% i 1,4-Dichlorobenzene-d4 50.0 100% Surrogate Standards I Methane, dibromofluoro- .48.9 98% 1,2-Dichloroethane-d4 51.0 102% Toluene-d8 51.8 104% ip-Bromofluorobenzene (BFB) 49.4 99% '1 ~ EPA 8260B Laboratory Report Water SamPle Results in ug/L I Certification # 1920 I CLIENT: E:C Remediation, LLC 5300 Woodmere Drive, Suite 105 Bakersfield, CA 93313 I Project ID · Mr, Fast I Report Date · 6/17/2003 i Sample ID · 5640/MW-8 I Analyte Result Meth°d RL Units 5 Oxygenates I t-Butanol (TBA) Tert-Butyl Alcohol ND 2.5 ug/-L, Methyl Tert-Butyl Ether (MTBE) ND 0.5 ug/L I Diisopropyl Ether (DIPE) ND 0.5 ug/L Ethyl Tert-Butyl Ether (ETBE) ND 0.5 ug/L Tert-Amyl Methyl Ether (TAME) ND 0.5 ug/L I BTF:X Component~ I Benzene ND 0.5 ug/L Toluene 8,600 0.5 ug/L Ethylbenzene 23.1 0.5 ug/L i m & p Xylenes 5,680 0.5 ug/L o Xylenes 4,360 0.5 ug/L Internal Standards Results % Recovery I Benzene, fluoro 50.0· 100% Benzene-d5, chloro- 50.0 100% i 1,4-Dichlorobenzene-d4 50.0 100% Surrogate Standards IMethane, dibromofluoro- 47.1 94% 1,2-Dichloroethane-d4 49.6 99% Toluene-d8 52.6 105% ip-Bromofluorobenzene (BFB) 46.8 94% · EPA. 8260B LaboratOry Report Water Sample Results in ug/L I Certification # 1920 I CLIENT: E2C Remediation, LLC 5300 Woodmere Drive, Suite 105 Bakersfield, CA 93313 Project ID · Mr. Fast I Report Date 6/17/2003 Sample ID :' :5643/MW-llR I Analyte Result Method RL Units 5 Oxygenates I t-Butanol (TBA) Tert-Butyl Alcohol ND 2.5 ug/L Methyl Tert-Butyl Ether (MTBE) ND 0.5 ug/L I Diisopropyl Ether (DIPE) ND 0.5 ug/L Ethyl Ted-Butyl Ether (ETBE) ND 0.5 ug/L Tert-Amyl Methyl Ether (TAME) ND 0.5 ug/L I BTEX Components i Benzene 1.84 0.5 ug/L . Toluene 25,700 0.5 ug/L Ethylbenzene 3,140 0.5 ug/L i m & p Xylenes 3,050 0.5 ug/L o Xylenes 3,430 0.5 ug/L Internal Standards Results % Recovery Benzene, fluoro 50.0 100% Benzene-d5, chloro- 50.0 100% 1,4-Dichlorobenzene-d4 50.0 100% Surrogate Standards Methane, dibromofluoro- 47.0 94% 1,2-Dichloroethane-d4 51.9 :104% Toluene-d8 52;0' 104% p-Bromofluorobenzene (BFB) 44.8 90% EPA 8260B Laboratory Report Water Sample Results in ug/L Certification # 1920 'CLIENT: E2C Remediation, LLC 5300 Woodmere Drive, Suite 105 Bakersfield, CA 93313 Project ID: M£. Fast Report Date · 6/17/2003 Sample ID · 5642/MW-12 Analyte Result· Method RL Units 5 Oxygenates t-Butanol (TBA) Tert-Butyl Alcohol ND 2.5 ug/L Methyl Tert-Butyl Ether (MTBE) ND 0.5 ug/L Diisopropyl Ether (DIPE) ND 0.5 ug/L Ethyl Ted-Butyl Ether (ETBE) ND 0.5 ug/L Tert-Amyl Methyl Ether (TAME) ND 0.5 ug/L BTEX Components Benzene ND 0.5 ug/L Toluene 155 0.5 ug/L Ethylbenzene 140 0.5 ug/L m & p Xylenes 1,890 0.5 ug/L o Xylenes 756 · 0.5 ug/L, I Internal Standards Results % Recovery I Benzene, fluoro 50.0 100% Benzene-dS, chloro- 50.0 100% 1,4-Dichlorobenzene-d4 50.0 100% I Surrogate Standards I Methane, dibromofluoro- 48.9 98% 1,2,Dichloroethane-d4 52.1 104.% Toluene-d8 52.6 105% ip-Bromofluorobenzene (BFB) 44.8. 90% I II~lc~ LI~l~o~ri~ ii ~, i ii i / i / ~ II ~: i ~, ii ~ Chain of Custody Form Client Name: E2C Remediation. LLC 661.831.6906 fax 661.831.6234 Analysis Requested sample Matdx ' P'°jectName: /'/~,_....~,7~ ~- ~. ~ ~A Client Address: 5300 Woodmere Dr., Suite 105. Bakersfield, CA 93313 ~ ~ ~ ~ ~ queous Project Manage,: ~,//~5 ~ ~ ~ ~ ~ ~ ~ ~ ¢ ~% ~ ~ ~ < , ~ · Soil - ~ ~ e Acidified 8ample Da~e ~ampleT~me 8ample Desodp~on ~nd Oonta~nerType ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ Comments ' 2 Turnaround Time Requested: 24 Hour _ 48 Hour ~ 5-Day ~ Standard ~ Relinquished By: ~~/~,,~/~ Date: Received By: . _- ~J' ~~ ~elinquished By: ~ ate:' a,e: . ' Date: Halcyon Laboratories Inc. EPA 8260B LabOratory Report Water Sample Results in ug/L Certification # 1920 I CLIENT: E2C Remediation, LLC 5300 Woodmere Drive, Suite 105 Bakersfield, CA 93313 I Project ID · Mr. Fast I Report Date · · 6/17/2003 i Sample ID · 5624/Travel Blank I Analyte Result Method RL Units 5 Oxygenates I t-Butanol (TBA) Tert-Butyl Alcohol ND 2.5 ug/L Methyl TerI-Butyl Ether (MTBE) ND ' 0.5 ug/L I DiisopropYl Ether (DIPE) ND 0.5 ug/L Ethyl Tert-Butyl Ether (ETBE) ND 0.5 ug/L Tert-Amyl Methyl Ether (TAME) ND 0.5 ug/L I BTEx Components / I Benzene ND 0.5 ug/L Toluene ' ND 0~5 ug/L Ethylbenzene ND 0.5 ug/L i m & p Xylenes ND 0.5 ug/L o Xylenes ND 0.5 ug/L Internal Standards Results % Recovery ' Benzene, fluoro 50.0 100% Benzene-d5, chloro- 50.0 100% · 1,4-Dichlorobenzene-d4 50.0 100% Surrogate Standards Methane, dibromofluoro- 45.7 91% 1,2-Dichloroethane-d4 48.6 97% Toluene-d8 49.0 98% p-Bromofluor°benzene (BFB) 41.5 83% · Halcyon Laboratories~ Inc. EPA 8260B Laboratory Report Water Sample Results in ug/L Certification # 1920 , CLIENT: EzC Remediation, LLC 5300 Woodmere Drive, Suite 105 Bakersfield, CA 93313 Project ID' Mr, FaSt ' Report Date · 6/17/2003 Sample ID · 5625/Equipment Blank Analyte Result Method RL Units 5 Oxygenates t-Butanol (TB^) Tert-Butyl Alcohol ND · 2.5 ug/L Methyl Tert-Butyl Ether (MTBE) ND 0.5 ug/L Diisopropyl Ether (DIPE) ND 0.5 ug/L Ethyl Tert-Butyl Ether (ETBE) ND 0.5 ug/L Tert-Amyl Methyl Ether ('CAME) ND 0.5 ug/L BTEX Components Benzene, ND 0.5 ug/L Toluene ND 0.5 Ethylbenzene ND 0.5 ug/L rn & p Xylenes ND 0.5 ug/L o Xylenes ~ ND 0.5 ug/L Internal Standards Results % Recovery Benzene, fluoro ' 50.0" 100% Benzene-d5, chloro- 50.0 100% 1,4-Dichiorobenzene-d4 50.0 100% Surrogate Standards Methane, dibromofluoro- 50.8 102% 1,2-Dichloroethane-d4 53.0 106% Toluene-d8 50.2 100% p-Bromofluorobenzene (BFB) 45.6 91% I .Halcyon Laboratories~ Inc. ~ EPA 8260B Laboratory RePort WaterSample Results in'ug/L 'l Certification # 1920 CLIENT:' E2C Remediation, LLC I 5300 Woodmere Drive, Suite 105 Bakersfield, CA 93313 I Project ID' Mr~ Fast I Report Date · 6/17/2003 Sample ID: 5629/MW-2 I i Analyte Result Method RL Units 5 Oxygenates I t-Butanol (TBA) Tert-Butyl Alcohol ND 2.5 ug/L Methyl Tert-Butyl Ether (MTBE) ND 0.5 · ug/L' i Diisopropyl Ether (DIPE) ND 0.5 ug/L Ethyl Tert-Butyl Ether (ETBE) ND 0.5 ug/L Tert-Amyl Methyl Ether (TAME) ND 0.5 ug/L I BTEX C°mp°nentS Benzene ND 0.5 ug/L I Toluene ND 0.5 ug/L Ethyl benzene l. 8 6 0.5 ug/L m & p Xylenes 3.15 0.5 ug/L I o Xylenes ' 1.59 0.5 ug/L I Internal'Standards Results % Recovery I Benzene, fluoro 50.0" 100% Benzene-d5, chloro- 50.0 100%. · 1,4-Dichlorobenzene-d4 50.0 100% I Surrogate Standards Methane, dibromofluoro- 51.6 103% I 1,2-Dichloroethane-d4 54.4 109% Toluene-d8 52.6 105% p-Bromofluorobenzene (BFB) 45.7 91% I I ' Halcyon Laboratories, :[nc, EPA 826'0B Laboratory Report Water Sample Results in ug/L Certification # 1920 ' CLIENT: E2C Remediation, LLC 5300 'Woodmere Drive, Suite 105 Bakersfield, CA 93313 Project ID · Mr. Fast Report Date 6/17/2003 Sample ID: 5627/MW-4 AnalYte Result Method RL Units 5 Oxygenates t-Butanol CTBA) Tert-Butyl Alcohol ND 2.5 ug/L Methyl Tert-Butyl Ether (MTBE) ND 0.5 ug/L Diisopropyl Ether (DIPE) ND .0.5 ug/L Ethyl Tert-Butyl Ether (ETBE) ND 0.5 ug/L Tert-Amyl Methyl Ether (TAME) ND 0.5 ug/L BTEX ComponentS Benzene ND ,0.5 ug/L Toluene ND 0.5 ug/L Ethylbenzene ND 0.5 ug/L m & p Xylenes ND 0.5 ug/L o Xylenes ND 0.5 ug/L Tnternal Standards Results % Recovery Benzene, fluoro ' 50.0 ' 100% Benzene-d5, chloro- 50.0 100% · 1,4-Dichlorobenzene-d4 50.0 100% Surrogate Standards Methane, dibromofluoro- 52.6 105% 1,2-Dichloroethane-d4 56.5 113% Toluene-d8 53.1 106% p-Bromofluorobenzene (BFB) 46.9 94% I Halcyon Laboratoriesr Inc. EPA 8260B Laboratory RePort Water Sample Results in ug/L Certification # 1920. cLIENT: E2C Remediation,.LLC 5300 Woodmere Drive, Suite 105 Bakersfield, CA 93313 Project iD. Mr. Fast Report Date · 6/17/2003 Sample ID :. 5626/MW-5 Analyte Result Method RL Units 5 'Oxygenates t-Butanol (TBA) Tert-Butyl Alcohol ND 2.5 ug/L Methyl Ted-Butyl Ether (MTBE) ND 0.5 ug/L Diisopropyl Ether (DIPE) ND 0.5 ug/L Ethyl Tert-Butyl Ether (ETBE) ND 0.5 ug/L Tert-Amyl Methyl Ether (TAME) ND 0.5 ug/L BTEX Components Benzene ND 0.5 ug/L Toluene ND 0.5 ug/L Ethylbenzene ND 0.5 ug/L m & p Xylenes ND 0.5 , ug/L o Xylenes ND 0.5 ug/L I Znternal Standards Results % Recovery I Benzene, fluoro ' 50.0 100% Benzene-d5, chloro- 50.0 100% · 1,4-Dichlorobenzene-d4 50~0 100% I Surrogate Standards ~ Methane, dibromofluoro- 50.4 101% I 1,2-Dichloroethane-d4 54.6 109% Toluene-d8 53.9 108% p-Bromofluorobenzene (BFB) 47.0 94% ! Ualcyon Laboratories~ Znc. EPA 8260B LabOratory Report WaterSampleResults inug/L C!rtification # 1920 CLIENT: 'E2C Remediation, LLC .. 5300 Drive, 105 Woodmere suite Bakersfield, CA 93313' P~oject ID' Mr. Fast' R~ port Date · 6/17/2003 S ~fimple ID: 5631/MW-6 A Result Method RL Units 5 Oxygenates t-Butanol (TBA) Tert-Butyl Alcohol ND 2.5 us/L M,~thyl Tert-Butyl Ether (MTBE) ' ND 0.5 ug/L Di!sopropyl Ether (DIPE) ND 0.5 u~:~, Ethyl TertrButyl Ether (ETBE) ND 0.5 U~:~/[-, T~rt-Amyl Methyl Ether (TAME) ND. 0.5 ug/L BTEX Components Ethylbenzene 0.68 0.5 ug/L m & p Xylenes 1.84 0.5 ug/L o ;:ylenes ND 0.5 ug/L I Inter'nal Standards Results % Recovery I Benzene, fluoro ' 50.0 -. 100% Belnzene-d5, chloro- 50.0 100% · 1,4-Dichlorobenzene-d4 50.0 100% I s!rrogate Standards M Ith e, ane, dibromofluoro- 48.8 98% I 1,2, -Dichloroethane-d4 52.7 105% To,luene-d8 52.2 ::[04% p-Bromofluorobenzene (BFB) 47.1 94% I' Halcyon Laboratories, :Inc.. EPA' 8260B Laboratory Report Water Sample Results in ug/L CertifiCation Ct 1920 CLIENT: E2C Remediation, LLC 5300 Woodmere Drive, Suite 105 Bakersfield, CA 93313 Project ID' Mr, Fas~ Report Date · 6/17/2003 Sample ID: 5630/MW-9 Analyte Result Method RL Units 5 Oxygenates t-Butanol (TBA) Tert-Butyl Alcohol ND 2.5 ug/L Methyl Tert-Butyl Ether (MTBE) ND 0.5 ug/L Diisopropyl Ether (DIPE) ND 0.5 ug/L Ethyl Tert-Butyl Ether (ETBE). ND 0.5- ug/L Tert-Amyl Methyl Ether (TAME) ND 0.5 ug/L BTEX Components Benzene ND 0.5 ug/L Toluene ND 0.5 ug/L Ethylbenzene 1.17 0.5 ug/L m & p Xylenes 2.40 0.5 ug/L o Xylenes 0.97 0.5 ug/L I Znternal Standards Results % Recovery i Benzene, fluoro' 50.0-. 100% Benzene-d5, chloro-,' 50.0 100% · 1,4-Dichlorobenzene-d4 50.0 100% I Surrogate Standards Methane, dibromofluoro- ' '53.0 106% I 1,2-Dichloroethane-d4 55.0 110% Toluene-d8 52.9 106% p-Bromofluorobenzene (BFB) 48.5 97% ! I Halcyon Laboratories, :[nc. EPA 8260B LabOratory Report Water Sample Results in ug/L Certification # 1920 CLIENT: E2C Remediation, LLC' 5300 Woodmere Drive, Suite 105 Bakersfield, CA 93313 Project ID · Mr. Fast Report Date · 6/17/2003 Sample ID · 5628/MW-10 Analyte ' Result. Method RL Units '$ Oxygenates t-Butanol (TBA) Tert-Butyl Alcohol ND 2.5 ug/L Methyl .Tert-Butyl Ether (MTBE) ND 0.5 ug/L Diisopropyl Ether (DIPE) ND 0.5 ug/L 'Ethyl Tert-Butyl Ether (ETBE) ND 0.5 ug/L Tert-Amyl Methyl Ether (TAME) ND 0.5 ug/L BTEX Components Benzene ND 0.5 ug/L Toluene ' 53.0 0.5 ug/L Ethylbenzene 1,140 0.5 ug/L m & p Xylenes 1,470 0.5 ug/L o Xylenes 1,420 0.5 ug/L I :Internal Standards Results % Recovery Benzene, fluoro · 50.0 .. 100% I Benzene-d5, 50.0 100% chloro- · 1,4-Dichlorobenzene-d4 50.0 100% Isurrogate Standards Methane, dibromofluoro- 48.8 98% i 1,2-Dichloroethane-d4 51.3 103% Toluene-d8 52.1 104% p-Bromofluorobenzene (BFB) 48.7 97% Halcyon Laboratories, :[nc. ~ EPA 8260B Laboratory Report Water Sample Results in ug/L Certification # 1920 CLIENT: E2C Remediation, LLC I 5300 Woodmere Drive, Suite 105 Bakersfield, CA 93313 ~ I Project ID · Mr. Fast Report Date: 6/17/2003 I Sample ID · 5635/MW-14 Analyte Result ' Method RL Onits I" 5 OxYgenates 'l t-Butanol (TBA) Ted-Butyl Alcohol ND 2.5 ug/L Methyl Ted-Butyl Ether (MTBE) 'ND 0.5 ug/L Diis0Propyl Ether (DIPE) ND 0.5 ug/L i Ethyl Ted-Butyl-Ether (ETBE) ND · 0.5 ug/L Tert-Amyl Methyl Ether (TAME) ND 0.5 ug/L I BTEX Components Benzene ND 0.5 ug/L i Toluene' ND 0.5 ugrL Ethylbenzene ND 0.5 ug/L m & p Xylenes ND 0.5 ug/L o Xylenes ND 0.5 ug/L I Internal Standards Results % Recovery Benzene, fluoro' 50.0 .. 100% I Benzene-d5, chlOro- 50.0 100% · 1,4-Dichlorobenzene-d4 50.0 ::[00% 'l Surrogate Standards Methane, dibromofluoro- 50.5 101% 1,2-Dichloroethane-d4 54.0 108% 'l Toluene-d8 53.5 107% p-Bromofluorobenzene (BFB) 45.3 91% ! Halcyon Laboratories~ Inc. EPA 8260B Laboratory RepOrt wate~ Sample Results in u§/L Certification # 1920 · CLIENT: E2C Remediation, LLC 5300 Woodmere Drive, Suite 105 Bakersfield, CA 93313 Project ID · Mr. Fast Report Date · 6/17/2003 Sample ID :- - 5634/MW-15S Analyte Result Method RL Units 5 Oxygenates t-Butanol (TBA) Tert-Butyl Alcohol ND 2.5 ' ug/L Methyl Tert-Butyl Ether(MTBE) ND 0.5 ug/L Diisopropyl Ether (DIPE) ND 0.5 ug/L Ethyl Tert-Butyl Ether (ETBE) ND 0.5 ug/L Tert-Amyl Methyl Ether (TAME) ND 0.5 ug/L BTEX Components Benzene ND 0.5 ug/L Toluene' ND 0.5 Ug/L Ethylbenzene ND 0.5 ug/L m & p Xylenes ND 0.5 ug/L o Xylenes ND 0.5 ug/L I Znternal Standards Results % Recovery i Benzene, fluoro' 50.0- 100% Benzene-d5 chloro- 50.0 100% · 1,4-Dichlorobenzene-d4 50.0 100% I S urrogate Standards Methane, dibromofluoro- 49.7 99% i 1,2-Dichloroethane-d4 54.8 110% Toluene-d8 52.3 105% p-Bromofluorobenzene (BFB) 46.1 92% I Halcyon Laboratories, ]:nc. EPA 826OB Laboratory Report Water Sample Results in ug/L Certification # 1920 CLIENT: E2C Remediafion, LLC 5300 Woodmere Drive, Suite 105 Bakersfield, CA 93313 Project ID' I~r. .. Fast Report Date · 6/17/2003 Sample ID: 5632/MW-17S Analyte Result Method RL Units 5 Oxygenates t-Butanol (TBA) Tert-Butyl Alcohol ND 2.5 Methyl Tert-Butyl Ether (MTBE) ND 0.5 ug/L Diisopropyl Ether (DIPE) ND 0.5 ug/L Ethyl TeA-Butyl Ether (ETBE) ND 0.5 ug/L Tert-Amyl Methyl Ether (TAME) ]',rD 0.5 ug/L BTEX Components Benzene ND 0.5 ug/L Toluene~ ND ., 0.5 ug/L Ethylbenzene 0.56 0.5 ug/L · m & p Xylenes 1.60 0.5 ug/L o Xylenes .- ND 0.5 ug/L Internal Standards Results % Recovery Benzene, fluoro · 50.0-. 100% Benzene-d5, chloro- 50.0 100% · 1,4-Dichlorobenzene-d4 50.0 100% Surrogate Standards Methane, dibromofluoro- 50.7 101% 1,2-Dichloroethane-d4 54.0 108% Toluene-d8 52.8 106% p-Bromofluorobenzene (BFB) 46.4 93% Halcyon Laboratories, :[nc. EPA 8260B Laboratory Report Water Sample Results in ug/L Certification # 1920 CLIENT: E2C Remediation, LLC' 5300 Woodmere Drive, Suite 105 Bakersfield, CA '93313 Project ID · Mr. Fast ' Report Date · 6/17/2003 Sample ID · 5633/MW-18 Analyte Result Method RL Units 5 Oxygenates' t-Butanol (TBA) Tert-Butyl Alcohol ND 2.5 ug/L Methyl Tert-Butyl Ether (MTBE). ND 0.5 ug/L Diisopropyl Ether (DIPE) ND 0.5 u~L Ethyl Tert-Butyl Ether (ETBE) ND 0.5 ug/L Tert-Amyl Methyl Ether (TAME) ND 0.5 ug/L BTEX Components Benzene ND 0.5 ug/L Toluene' ND 0.5 ug/L Ethylbenzene ND 0.5 ug/L m & p Xylenes ND 0.5 ug/L o Xylenes ND 0.5 ug/L Internal Standards Results % Recovery Benzene, fluoro - 50.0 .. 100% Benzene-d5, chloro- 50.0 100% · 1,4-Dichlorobenzene-d4 50,0 100% Surrogate Standards Methane, dibromofluoro- 51.3 103% 1,2-Dichloroethane-d4 54.4 109% Toluene-d8 54.4 :1.09% p-Bromofluorobenzene (BFB) 47.6 95% Halcyon Laboratories, Inc. EPA 8260B Laboratory Report Water Sample Results in ug/L Certification # 1920 CLIENT: EzC Remediation, LLC 5300 Woodmere Drive, Suite 105 Bakersfield, CA 93313 Project ID. Mr, Fast RePort Date': 6/17/2003 Sample ID ' 5636/MW~19 Analyte Result Method RL Units 5 Oxygenates t-Butanol (TBA) Ted-Butyl Alcohol ND. 2.5 ug/L Methyl Ted-Butyl Ether (MTBE) ND 0.5 ug/L Diisopropyl Ether (DIPE) ND 0.5 ug/L Ethyl Ted-Butyl Ether (ETBE) ND 0.5 ug/L Tert-Amyl Methyl Ether (TAME) ND 0.5 ug/L BTEX.. Components 'Benzene ND 0.5 ug/L Toluene ND 0.5 ug/L Ethylbenzene ND 0.5 ug/L m & p Xylenes ND 0.5 ug/L o Xylenes ND 0.5 ug/L [nternal Standards Results % Recovery Benzene, fluoro' 50.0-. ::[00% Benzene-d5, chloro- 50.0 100% · 1,4-Dichlorobenzene-d4 50.0 100% Surrogate Standards Methane, dibromofluoro- 46,9 94% 1,2-Dichloroethane-d4 52.3 105% Toluene-d8 49,7 99% p-Bromofluorobenzene (BFB) 45.3 91% I Prqiect Number 1801BK0~ November 15. 200,'~ I I: I I I I ~ APPENDIX C I ' Third Quarter 2003 Groundwater Purge Data Sheets '1 I I I I I ' E2C Remediation Appendix C I I WATER QUALITY SAMPLING RECORD a'r~,und',,a!~-r Sci.~.'~tists: Environ.,m. en[~l ,C. onsulta~t.s_ AND WELL DEVELOPMENT DATA ;AMPLE ID OR WELL NO.: ~/¢,' _/ DEPTH TO wATER': . ~/~' ' TOTAL DEPTH OF WELL: )ROJECT NO.: ' · WELL DIAMETER: TI~.IE INTAKE ~ RATE CUM. VOL WELL VOL (F~) (UNITS) (~mhos/ CONTROL DEPTH (GPM) (GAL) PUMPED cra) NO. (COLOR, TURBIDLY, ETC.) 'CALIBRATION / STAHOARDIZEO - · WATER QUALITY SAMPLING RECORD Groundwater Scientists: Environmental Consultants AND WELL DEVELOPMENT DATA 5300 Woodmere Dr., Suite 105 Bakers¢ie~d, CA 93313 · ......... ;AMPLE ID OR WELL NO.: ~(~ ~ DEPTH TO WATER: ~~ , ~ TOTAL DEPTH OF WELL: ~'~ OJECT NO.: WELL DIAMETER: ~ ~ ' OJECT NAME:_ ~¢( ~ dASING VOLUME: ~,/~ DATE:_ . ' ' ...... REMARKS .... CUM. VOL WELL VO~ (F:) (UNITS) (~mhosl CONTROL TP,.IE INTAKE RATE cra) NO. (COLOR. TURBIDI~ ETC.) DEPTH I (GPM) (GAL~ · PUMPED ¢~DIZED V,'a'.l Caoa:;~7: 2' - 0.1632 g a?~r,'',ir,aar ~ pH 4.01 ~ , 4' - 0.652~ ga'.',op,,..nem ~ ~ 6'- ~.~ss ~a:~o~..~i.~ar I~>;STR'J~,~E~iT RE 'Dh';G I I I .. · TR'J' ~ENT READ NS I I N,DTE5: WATER QUALITY SAMPLING RECORD · Groundwa!er Sci~ntisls: Environmental Consultants AND V, ,-'LL DEVELOPMENT DATA 5300 Woodmere Dr., Suite 105 Bakarsfie~d, CA 9331.. ~ .... , . . ; ....................... SAMPLE ID OR WELL NO.: ~'-~ DEPTH TO WATER: ECT NO.: TOTAL DEPTH OF WELL: ~OJECTNAME: ///: ~ WELLD,AMETER: ~// TIME INTAKE ~ RATE CUM. VOL WELL VOL (F~) (UNITS) (].~mhos/ CONTROL DEPTH (GPM~ (GAL) PUMPEO cra) NO. ('COLOR, TURBIDLY, ETC.) ~ALIBRATIOH / STAHDARDIZEO ~ "~' ~- .... · 4'. 0.6528 gat;or,'Ene~r fool ' " STANDARDIZATION , 74 TRUMENT READING ~ [ I I N,DTES: ' WATER QUALITY SAMPLI~G RECORD Ground.,,,,a~.er Sci.~ntist$: Env,ron.,m. ental ~on_.s.uL[~t.::,~ . AND WELL DEVELOP;,'I,'-NT DATA .__.._J 5300 V/oodmere Dr., Sui:e 105 BaK~rsfie,d, CA 9;Jbll :J _ b .... . ................ · . TOTAL DEPTH OF WELL: ;$"¢.~ f~ TIME RATE CUM. VOL WELL VOL (F°) (UNITS) (;~mhos/ CONTROL · cra) I~:O. (COLOR, TURBIDITY, ETC.) OEPT~H (GPM) (GAL) PUMPE~D a*T~O~l / S-TAH--C;F~.~L:,Z~ 0 ..... ---:- SOLUTIO,'q I pH 4.01 $ 7.0 I pH 10.0 l' ~,,..I Ca,..--..,. 2' - 0.1832 ga!!.m;-2, ir, e-2. r · 4' - 0.6523 ga:;o,'Viinear f.2ct ,Dh ,'~ i ,.. - ~ ,--'~%'-~m~ .., C~,,,i D U C T A H C E~,~TiOR~ STANDAROIZATIOH sIFE'F~cL=:'.'ELEcl'RILC'''L-C --? .... ~., I 18 'i4~3 I 6858 ~' ~ I i I~.,,,:STRLJ,M~NT R~ADh k..~ ~ ,.._z_._I.~~ -~-. ~--~' .~- -.. .............. ~ ~ ~ ......... -~ ~'~ I M ~ FT. 3 CAS'i:,~:O V3L~JM=$~GALS' SAM?LEOAT:__ ~"~[) FT. FI,,ALD:, iHluN'.~' .... : , INOTE$: . I: ' arc, undwater Scientists: Environmental Cons,~Ran',s AND WELL DEVELOPMENT DATA 5300 V/oodmere Dr., Suite 105 Bakersfield. CA 9~3:13= .:. .................................... AMPLE ID OR WELLNO.: ,,~"¢' ~,]""' ._(. J DEPTH TO WATER:_ ~/-/~, ~// )JECT NO.: TOTAL DEPTH OF WELL: 'ROJECT NAME: /~///-- WELL DIAMETER: G;~ INTAKE RATE CUM. VOL WELL VOL (F') (UNITS) i (~.,mhos/ CONTROL DEPTH (GPM) (GAL) PUMPEO cm) NO. (COLOR. TURS;DITY, ETC.) iBRATIOH/STAHOARDIZEO · V/a~lCapa;;~7: 2'- 0.1632gaRar,~r,a~r fcct EUFFERSOLUTION I pH4.01 I ~ t7.0 I pill0.0 ~ = :~ - ~ALC~NOUCTAHCE~~TIO~STAHDAROIZATIO~I SAMPLED AT: ~ ~. FIt;AL DEPTH TO WATER: ~ 2¢ ~ ~ FT. 3 CASING J WATER QUALITY SAMPLING RECORD Groundwater Scientists: Environmental Consultaa[s AND WELL DEVELOPMENT DATA 5300 Woodmere Dr., Suite 105 Bakersfield, CA 933t3 - ........ . ......................... i&MPLE ID OR WELL NO.: ./Z'?E',~'"~' DEPTH TO V'IATER: ~/'g),~_.. ' TOTAL DEPTH OF WELL: ~-"r-~9,,'~/ CASING VOLUME: c:~, O/~ ga!:ons TIME INTAKE RATE CUM. VOL I WELL VOL (F=) (UNITS) (.,.~mhos/ CONTROL DEPTH (GPM~) ~ cra) NO. (COLOR, TURBIDITY, ETC.) ~~ SOLUTIO,"I I pH 4.0~ I · 4' o 0.6528 ga'.;on''Ene=-'r f.2o~ ~SPECIFIC, ELECCRI'~CZAL Cd,"IDUCTA;ICE - CALlS.RATION ! STANDARDIZATION · ~TR'J;,I E,'"IT READtNG m I'i,DTES: .. I IE-~'C' REMEDIA'T/ON, LLC WATER QUALITY S-,,.,P-I,,iG RECORD Gr.~und','/a:er Scientists: En-.,'ironmental Consu!:an',s AND k, ,'-LL DEV£LOPt.,iENT DAT-A-*'" 53C0 W:odm~:e Dr., Suhe 105 B~k~rs~ietd, CA 93313 S-,.,.PLE"" I'D OR WELL NO.: ~"~W"', 7 DEPTH'TO'. .... 'iAI ER.' ' ,~"""~' ','~O ff" PROJECT NO.: TOTAL DEPTH OF WELL: ~".~. ?ROJFCT ',- ~'c~7- .... '- · N.~,I~-.__ .. WELL Di~,,cTER. DATE: CAS,,~¢ VO~.U ,.:. {', PURGE CHARACTERISTICS TE,'.IP p.'-t I SEC SAt.,I?LE RE,MA,RKS TIME INTAKE RATE CU?,I. VOL WELL VOL (F~) (UNITS) (:.:mhosl CONTROL DEPTH (GPM) (GAL) - PUMPED · cra) NO. (CO_Ow, TUn:-.,D~7-Y, ETC. ' )1:..,.~} z/. 67, i 5.57 o,.ig · I I i..jCALIB RATION / STANDARDIZED ~FFERSOLUTIO~ I pH4.01 v [7.0 I pill0.0 VieN(~?a:it>': 2'° 0.1632ga. o,~,m-=,¢~' ~p-F~ ~ J 4" - 0.6528 gallop'linear ~oot ~STRUMENT RE ',Di,~;G t J 6' - 1.4~3~ ga~Ior~inear Io.2~ _ ~CIFIC ELECTRILCAL CONDUCTANCE- CALISRATION / STANDARDIZATION .<CL SOLUTION F}.L~OS")'CM C~ 25"C' J 74 I 718 ~ 1413 ~,a'~ ~, I I I I t .. I ISTRUMENT READING ' I I I ~MPLEO AT: ~ O ~..F',NAL DEPTH 'FO WATER: ~ .... G,vun,....;-a... Sc[e:",tis:$: En'..'iron,me,~tal Cor, su!:a,~:s AND V/ELL DEVELO?tvlENT DAT-A'"'"' -:' 5300 V/c. od,~..~re Dr., suite 105 B~kersfie:d, CA 93313 ' PROJECT NO.: TOTAL DEP.TH OF WELL: PROJECT NAME:__ 2'~..~..,,7 WELL Db:.LIETER: ~ ,2' PURGE CHARACTERISTICS TE;.IP I pH SEC SAMPLE RE,",.1.ARKS ----'------ TIME INTAKE RATE CUM. VOL WELL VOL .(F°) (U,'flTS) (:4tubas/ CONTROL DEPTH (GPM) (GAL) PUMPED om) NO. (COLOR, TURBIDITY, ETC.)_b CALIBRATIOh! / STA~;DARDIZED I 2' - 0.1632 gal[o,~'lin.~-"r foot ,FFER SOLUTIO~J I pH 4.01 I t' I 7.0 I pH 10.0 V/oN q_-?az~t:,.': 4' 0.6528 ga;IoWlinear foot iTRU,'JE,'iT RE '.O;,';G I, I I ~ 6" - 1.45SB ~' ~..'H~,r foot ~CIFIC ELECTRILCAL CONDUCTANCE · CALIO.qATION/STANDARDIZATION I EDIATION, LLC WATER QUALITY SAMPLING RECORD Groundwater Scientists: Environmental Consukan'.s AND WELL DEVELOP;vlENT DATA 5300 Woodmere Dr., Suite 105 Bakersfield, CA 933t3 .----._.__ ~JECT NO.: TOTAL DEPTH OF WELL: ~ Z__.J,%~-'/' R PROJECT NAME: //'~f" .~_.~.Y~ WELL DIAMETER: ~¢~ </ / ,,.a, MPLED BY: / ~ _~ ~.~'f,")' ~ METHOD OF PURGING: ~?/¢-6¢',. '~.~ ' (GPM) (GAL) PUMPED cra) ' NO. (COLOR, TURBIDITY, ETC.) iI .C,.,LI:B RATIO, 1 / STAI"IOARDIZEO .... SOLUTION ] pH 4.01 ~. I 7.0 I pH 10.0 I V/.~fl Ca?a:;!)': 2'- 0.1532 cja!l.2:".':ine-"r fact · 4' - 0.6523 ga::or,",~nea; fcc: I t I 6' 1.4~$~,g¢'0n';''~*rf3c'' I;;STR'J;JE,'iT RE ,Dh ,',-, I I · '..~-----~--~'-- i ,PECI,-'IC ELECI:RI-~C-AL C(~NDUCTA,';CE ' ~ALI3,.~TIo~TsTANDARDIZATION . ~,^ ~ I NOTES: ' .._.____-- ' REMEDIAT]ON, LLC . ~,'/A~ER QUALITY~'''~'~' . ' '- ,...,-, .... ,.-.,, ~ RECORD · O,~ounu,,,,'ater Scie.nds,'s: Environmental Cor',su!ran:s AND %, ,-'LL DEVELOPMENT DAT'A-"'" -:' 53,.,0 W:od,m-?e Dr., Suhe 105 Bakers~ie:d, CA 93313 ..... S:B,!PLE I? OR WELL NO.: M ~,v/- I O DF'PT:-I'TO WATER: -[PROJF,CT NO.i TOTAL DF,PTH OF WELL: ROJECT NAME:' M~ ¢/~ ~' 'F WELL DIAMETER: '~_ ATE: o~/O,~'/'O S CASING VOLUME: t PURGE CHARACTERISTICS TE,'.IP p:-f SEC SA,'¢?LE R E,U.A,-RdS TIME INTAKE RATE CU,'.L VOL WELL VOL (?) (UNITS) (:.:mhasl CO,'~TFOL DEPTH (GPM) (GAL) PUMPED ' cra) NO. (COLOR, TURS~Di,-Y, ETC.)~ d, o2 '\ ?_. ?:zq 5.2¢ O, t5 I i ~ CALIBRATION / STAHDARDIZEO ~F, I i I I . 4' - 0.6528 gatlo~'I]nea: foot ~EC~FIC ELECTRILCAL CONDUCTANCE- CALISRATIObI/STANDARDIZATIOH %CE'llSOLU~i~DN bMdbS / CM (;' 25l'c' .j 74 J 718 ~ 1413 ~ 6858 5~43 j ~TRUMENT REAOhWG I I I I I I F EMEDIATION, LI'C WATER QUALITY °" o-,,.,, ~ NG RECORD . Ground'.'/~te: Scientis:s: Envirsnmen~al Co~5u~:a2:s AND V/ELL ~' ,--~D, 5330 V/c,:dmere Or., Suhe 105 B~kersf[e:d, CA 93313 .... :Rh~PLE ID OR WELL NO.: ~'i1--~ DEPTH TO WATER: PROJECT NO:: TOTAL DEPTH OF V./ELL: ~'~-~'~ ' ,. ,- ROJECT *"~ -' ~ WELL D,¢J.,cTER. Q;.:;'DR= ' · ;Rh,.PLED BY: PURGE CHARACTERISTICS TEMP pH ~ SEC SAMPLE REMARKS TIME INTAKE RATE CUM. VOL WELL VOL (?) (UNITS)[ (:.;mhgs/ CONTFOL DEPTH (GFNI) (GAL) PU~,~PED · cra) NO. (COLOR, TURBIDLY, ETC.) 'l CALIBRATIOtl / STANDARDIZED ~P-F'~'JFFE R SOLUTIO); II pH 4.0~ II F t7.0 ~ pH 10.0 II V/ell ~ 5~7: 4'-2'' 0.65280A 532 gallo~qi~e~r foo',ga,.io~,linear foot STRUMENT RE '.D',XG { J [ [ 6' - 1.4~33 g~",o~lir, e~r foot ,ECIFIC ELECTRtLCAL CONDUCTANCE - ~O~rlO~7 STANDAROIZATIO~I ~L"SOLUFION F~.f~OS 1CM '~ 25'C' [ 74 I 7~8 I ~4~3 t 68~a I 5s~4:: I SAMPLED AT: ~D ~. F::;AL DEPTH 'FO WATER: %M FT. 3 CASING VOLU%'.ES= /[_GALS. E2C REiVIEDIATIO~N, LLC WATER QUALITY S.",!..:PLING RECORD. G.'~und'.'/~te: Scier, tis,'s: Enviranmenlal Consuf',an:s AND V/ELL DEVELOPt','~ENT DAT-A,~ 53c0 w'o~-='= Dr.. Suite 105 B=~ .... e,d. C~ 933~3 PROJECT NO.: TOTAL DEPTH OF WELL: PROJECT '" =' :~ WELL D~,:,I~T~R. AMPLEO BY: -~" :~O~- METHOD OF PURGING: ~ . _, PURGE CHARACTERISTICS TEMP pH · SEC ~ SAMPLE REMARKS TIME INTAKE RATE CUM. VOL WELL VOL (?) (UNITS) (:.;mhasl~ CONTROL . DEPTH (GFt,,~) (GAL) PUMPED cra) NO. COLOR, TURSIDi~, ETC.)~ ~CALIBRATIO~I'~STANDARDIZED ~ ~" .... ~cot ' ~JFFERSOLUTIO.~ I pH4.0i r (7.0 ~ pH 10.0 Wefl~a:~t)':'2'- 0.1e32gal[u~ ..... ~ ELECfRI~AL CO~4DUCTANCE - ~ALI~TIO~ STANDARDIZATION <CL SOLUTilDN ~;M.fi~S / CM ~ 25C' J 74 I 718 ~ 1413 I 6858 5~43 ~.~P"~' I I I ~ t ~AMPLEDAT: ~ FT. FI~;ALOEPTHTOWATER: .~, ~,~ FT. 3CASINGVOLUt.:Es~GALS' 'Groundwater Scientis:$: En'.zironmental Cor, suRants AND V/,-LL DEVELOpidENT 53C0 V,",oodmere Dr., Su. Re 105 Bakersfield, GA 933~ 3 . MPLE ID OR WELL NO.: ,/~ ~-~-//.¢ DEPTH TO WATER: PROJECT NO.: TOTAL DEPTH OF WELL: f~ DATE: , CASING · ' ' PL~RGE' C'HARACTERISTICS TEMP pH . SEC SA,'..!?LE RE,MARKS TIME INTAKE RATE CUM. VOL WELL VOL (F°) (UNITS) (:amhos/ CONTROL DEPTH '(GPM) (GAL) PUMPED cm) NO. (COLOR, TURBIDITY, ETC.) II~UFFERSOLUTION I pH4.01 I r 7.0 } pHIO'0 I I V,'eflC~apaz;t'/: 2"-O.1632gallorVlinearfoot 'r~TP-F, I I I t 4., - 0.6528 gallor~'linear foot ;CL SOLUTION .u,".!.HOS"/'CM ~ 2:5 C' J 74 I 718 I 1413 6868 b"ISTRU,*,IENT READING I I I I I ;AM,=LEO,',T: 5"g- FT. FmALBEpTH'rOWATEa: ,~q.,f"C" FT. 3CASlNOVOLU:.:ES= _,~,/¢ GALS. E2C REMEDIATION, LLC · V/ATER QUALITY S-,;.,,P,_I,,iG RECORD Groundwater Sci~nlis~s: En'v[ronmen~al Consu~an'.s AND V'/ELL DEVELOPMENT DAT'A'~ -:' 5300 V/~odmere Dr., Suite 105 Bakers¢ie;d, CA 93313 ' ROJECT NO]: TOTAL.DEPTH OF WELL: ' ~--? PURGE CHARACTERISTICS TEMP' pH SEC ~ SAMPLE REMARKS TIME INTAKE RATE CUM. VOL WELL VOL (F:) (U~ITS) (:xmhas/~ CONTROL DEPTH (GPM) (GAL) PUMPEO · cra) NO. (CO_Om, TUnu,DI~, ETC.~ C LIBRATION/STANDARDIZED FF~RSOLUTIO~; I' pH4.01 I' v 7.0 ~ pHlO.O¢~ ¢~%"¢ V/e!l~2a:[~>': 2'- 0.1532gaf~oW~ine~r[oot ~p ~, ~ ~ [ 4" - 0.6528 gallop'linear foot iSTRtJMENT RS '.D~XG I I I I 6'- 1.~=~ ga ..... Im...r ..... IECIFIC ELECTRILCAL CONDUCTANCE - CALISRATION / STANDARDIZATION ~CL SOLUT~N FMHOS'Z'CM ~ 25 C' ~ 74 . ~ 718 ~ 1413 ~ 6868 5Se40 I ~;TRUMENT READING I I I I I ~ - )TES: ~ " I ' ' Grt, und',va'.er Scientis:s: Environmental Cor, su!:an:s AND V/ELL DEVELOPMENT DAT'A'""' -:' 5300 Wsod.m.-~:e Dr., Su.!te 105 Bc. kers¢ietd; CA 93'313 " S&MPLE ID OR WELL NO.:, ~-/~ ¢. DEPTH 'TO WATER: ~ fi PROJECT NO.: TOTAL DEPTH OF WELL: ~/~ f: PROJECT NAME: _ WELL D~ .I_TER. DATE: CASING VOLUM E: ga~;ons SAMPLED BY: METHOD OF PURGI¢.IG: PURGE CHARACTERISTICS TEMP pH SEC SAMPLE REMARKS ~ TI.ME INTA;EE RATE CUM. VOL ~ WELL VOL (F~) (UNITS) (:.;tubas/ CONTROL DEPTH (GPM) (GAL) PUMPED cm) NO. (COLOR, TURB:Di~, ETC.~ CALIBRATION / STANDARDIZED I 4' 0.6528 gailo~lic, ear foot CUFFER SOLUTIO~ I pH 4.01 I v i 7.0 pH 10.0 ' =r ,,**-:',' 2"- 0.1632 gaI~o,~.'!ir, e-*r ;STR'.JME,~IT RE '.D;NG t I I 6' - 1 4-~ ~,Ir~rVli~e~r ~PECIFIC ELECTRILCAL CONDUCTANCE- CALI~RATIO~I / STANDARDIZATION KCL'SOLUTiON FMFU~CM (~ 25 C' I 74 I 718 ~ 1413 ~ 6858 5S~43 I ~iSTR'JMENT READING I I I i SAMPLED AT: ~. FI~;AL DEPTH TO WATER: FT. 3 CASING VOLUMES= GALS. I · Gr,:,und',','ate: Sc[entis:s: Environmental Cor, su!tan:$ ' AND V/ELL DEVELOPMENT DAT'A'""' 53C0 Vlsodm~:e Dr., Su~to 105 B~kersfie~d, CA 93313 PROJECT I'.IO.: TOTAL DEPTH OF WELL: /~7,~. PURGE C~IARACTERISTICS I TEMP pHI SEC SAM,=LE REMARKS 'J TIME INTAKE RATE CUM. VOL WELL VOL (F:) (UNITS) (:.;mh3sl CONTROL DEPTH (GPM) (GAL) PUMPED cra) NO. (COLOR, TURBIDITY, ETC.).~_ ~-CALIBR~TIO~I / STA~iDARDIZEO ~ECI FIC ~E~L C~N D U ~TAF~ ~TIO~ ) S~AN ~CL SOLUTiONF, FMFOS/'Chi ~ 25 C' I[ 74 II 718 I1 1413 ~1 6868 ~TRUMENT READING J I I I I ' I TES: E2C REMEDIAT ON, LL .WATER QUALITY ~"" '= ,",'G RECORD ~ Or,~und','/-2, ter Sc[e."',ti$~$: En',,[ronme,qtal Co,'*,su!taa',$ AND ~,.', ,-'LL DEVELOPMENT DAT-A'''~ -:' ' 53C0 V,'$odm-~re Dr., Suite 105 B~_ker$~ie:d, CA 93313 AMPLE ID OR WELL NO.: ,.~'~/_,~:~.,/g . DEPT:-4 'r0" '- PROJ=CT NO.: TOTAL DEPTH OF WELL: ~t~, GO fr )ATE: ' -- _,~ CAShXlG VOLUME. oa!;.ons f.,',MPLED BY: .,~/~,_ ~' ,~'~,,~,.~,., METHOD OF ~" PUR,.:,,HG: PURGE CHARACTERISTICS TEMP p.'-t SEC SAMCLE R E,".I.AR?< S ~ TIME INTAKE RATE CU,'.I. VOL WELL VOL (F~) (Ui'~ITS) (:.;mho$/ CONTROL DEPTH (GPM) (GAL) PUMPED cra) NO. (COLOR, TURS~Oi.TY, ETC.)_._. !CALIBRATIOhl / STA~;OARDIZED I ~,/.,l(~_...~..~. 2" 0.1532g JFFER SOLUTIO~I I pH 4.01 L' I 7.0 I pH 10.0 ' ~ ,,-,',-: ," . aI!o,~']ine~r Icot 'r-~Tf.~-F' I I 4". 0.652,3 ga:lon, hn~a, foo! ~STRLh',IE,"iT RE '.D;,";G I I I 6' 1 I~ECIFIC ELECTRILCAL CO,",IDUCTA,NCE- CALIRRATIO;,~ / STANDARDIZATION ~CL SOLUi-i';3NI.;?.tHOS3CM ~ '25C' I 74 I 718 - 1413 I 6858 li,u?'F' I I ] I ~;TRU,MENT READING t I I · - ~A.MPLEO AT: FT. Fie;AL DEPTH TO WATER: FT. 3 CASING VOLUMES= GALS. E~C Rcmecliation~ LL C I' Groundwater Scientists : Environmental Consultants Water Quality Sampling Record 300 Woodmere Drive, Suite 105; Bakersfield, California 933' and Well Develolb'ment Data Telephone:' (661) 831-6906 / Facsimile: (661) 831-6234 E~C REM. PROJECT ~: TOTAL DEPTH OF WELL: Well Capaci~: 2" - 0.1632 gallon/linear foot · 4" - 0.6528 gallo~linear foot 6" - 1.4688 gallon/linear foot SAMPLED A ~. FINAL DEP~ TO WATER: ~, 3 CASING VOLUMES = GALS, NOTES: {~" E~C REMEDIATIO'N, LLC I WATER QUALITY,,._ SA~,.tPLING RECORD '" -] Ground',,i-a:er Scientists: Environmental Con~u~Iants . AND V',r-LL DEVELOPMENT DAT'A'"' " 5300 V;oodmere I~r.: .Su~!e.]05 Bak?[~[i¢:d,.C.A 93.3.13. .................. ;.&MPLE ID OR WELL NO.: .,¢¢'¢/~--/"~.--. ~ DEPT:-I TO WATER: ¢% ,F"-~ PROJECT'NO.: TOTAL DEPTH OF WELL: ],.,~.. ~'"?¢_. ,,¢ CASING VOLUME: .~', ~,~,~, 9-3!:ons I PURGE CHARACTERISTICS TE,'.iP pH SEC SAMPLE RE,~.tARKS TI:AE INTAKE I RATE CUM. VOL WELL VOL (F*) (UHITS) (.,.tmhos/ CONTFOL DEPTH (GPM) (GAL) PUMPED cra) NO. (COLOR, I~URSIDITY, ETC.) H ~ALIBRATION / STANDARDIZED .... ~'~ IJUFFERSOLUTION I pH4.01. I F t7.0 I pill0.0 Well ~' } I 4" · 0.6523 gallop'linear ~STRUME,HT RE kOhWG I { [ 6" - 1.4~S$ g~!lo~/line~r... ~PECIFIC ELECTRILCAL CONDUCTANCE - CALIBRATION / STANDARDIZATION KCLSOLUTIDNFMHOS/CM ¢ 25C~ I 74 I ' 718 1413 68S8 I I~STRUMENT READING I I I I ,- SAMPLED AT: - m OTES: E,~C REMEDIATION, LLC WATER QUALITY S,",¢,,:PLI;,IG RECORD Grou."ld',.¢ater S¢iealis:$: Ea',/ironmenlal Cor,$u!:~n:.s AND V/ELL D EVELOPt.,tENT BAT-A'"" ':' 5300 V,"$od,"T:.e:e Dr., Su!:e 105 B~_kerslie~d; CA 93313 &MPLE ID OFt'WELL IWO.: .~XZ...,/'~.//~ DEPT:'-i, 'TO WATER: /'//¢X,~. ~/ aO,~.~_CT NO.: TOT,,,~_ ~,'r~ O~ ~",'SL~-i. //¢"i ¢'~ ¢.'. CA S ~,",~ G VOL U,',!_--: ~(-/ ~ .... -,'~.', ,'-L~ PURGE CHARACTERISTICS TE,MP pH SEC ' / SA,'..I.-"LE RE,".I..&.RKS ---------' TIME INTAKE RATE CUM. VOL WF_LL VOL (F~) (UNITS) (.'..:mh~s/I DEPTH (GPM) (GAL) PUMPED -' cra) NO: (COLO,R,'TURBIDii'FY, ETC.)L_ c.L.,ov,¢ y LRATIO~I/STANDARDIZED IECIFIC ELECTRILCAL CONDUCTANCE- CALIB.;RATIO,",! / STANDARDIZATION I)TES: ' I Pr°_iect Number 1801BK05 November 15. 2003 ! , ! ! ! ! ! ~ APPENDIX D I Third Quarter 2003 Groundwater Analytical Laboratory Report ! ! I I ! ! . ! E2C Remediation Appendix D ! Halcyon Laboratories Chain of Custody Form .: ·: Client Name: E2C Remodiation, LLC 661.831.6906 fax '661~831..6234 Analysis Requested Project Name: I~ I'~ ~"/.~; _f Sample Matrix Client Address: 5300 Woodmere Dr., Suite 105. Bakersfield, CA 93313 [~'~queous Project Manager: G, C L L ~ ~ ¢ o ~ ~ Soil Sampler Name: ~ · . ~ "Acidified Sample Dale Sample Time Sample Descriplion and Conlainer Type ........... '. Commenls :,oo ~ound Time Requested: 24 Hour 48 Hour 5-Day . Standard ~ Relinquished By: vz~ct'¢~"~'¢~' ~ Date:o,/bS, Yo2 ~uishedByl Received By: ~~'_.~__Z_ ~/"~./~'/z~: D ate: O¢,..~.~ IRe C eived ~y: Date: ........ Date: I Halcyon Laboratories, Inc. I Laboratory Report ~ Certification # 1920 : I CLIENT FaC Remediation, LLC Project Name: Mr. Fast 5300 Woodmere Drive, Suite 105 Bakersfield, CA 93313 Matrix: Aqueous I Sampled by: Ken Sutcliffe/Ramon Valez 'l i TESTS: TPH Gas by EPA 8015M TPHg AnalYsis: 8/13/2003 Date of Report: 8/15/2003 ~ Units: ug/L i sample #: 5981 5982 5983 5984 5985 5986 5987 Date Sampled: 8/5/2003 8/5/2003 8/5/2003 8/5/2003. 8/5/2003 8/5/2003 8/5/2003 DL ug/L i Sample Description: Travel Blank MW-1 MW-2 MW-3 MW-4 MW-5 MW-6 TPIt Gasoline ND - 4,560.0 ND 164.0 ND ND ND 50 'l Surrogate Recovery % 100 98 93 93 89 86 86 I - Sample #: 5988 5993 5991 5992 5989 5990 Date Sampled: 8/5/2003 8/5/2003 8/5/2003 8/5/200,3 8/5/2003 8/5/2003 IlL ug/L I Sample Description: MW-9 I MW-10 MW-14 MW-15-S MW-17-S' MW-l# I TPH Gasoline '270 ND ND ND ND ND 50 i Surrogate Recovery % 96 82 83 . 80 101 91 Sample #: Date Sampled: IlL ug/L I Sample Description: I YPH Gasoline ISurrOgate RecOvery %~ ~~~ DL = Detection Limit NA - Result not available Principal Analyst: Alexander Candia I .I I Halcyon Laboratories, Inc. ~ EPA 8260B Laboratory Report Water Sample Results in ug/L .~ Certification # 1920 CLIENT: EzC Remediation, LLC I 5300 Woodmere Drive, Suite 105 Bakersfield, CA 93313 I Project ID · Mr. Fast Report Date: 8/15/2003 I Sample ]~ · 5981 TRAVEL BLANK I Analyte Result Method RL Units '1 5 'Oxygenates i t-Butanol (TBA) Tert-Butyl Alcohol ND 2.5 ug/g Methyl Ted-Butyl Ether (MTBE) ND 0.5 ug/L Diisopropyl Ether (DIPE) ND 0.5 ug/L Ethyl Tart-Butyl Ether (ETBE) ND 0.5 ug/L I Tert-Amyl Methyl Ether (TAME) ND 0.5 ug/L BTEX Components I Benzene ND 0.5 . ug/L Toluene ND 0.5 ug/L i .Ethylbenzene ND 0.5 ug/g rn & p Xylenes ND 0.5 ug/L o Xylenes ND 0.5 ug/L I Internal Standards Results % Recovery Benzene, fluoro 50.0 100% Benzene-d5, chloro- . .50.0 100% I 1,4-Dichlorobenzene-d4 50.0 100% Surrogate standards I Methane, dibromofluoro- 53.1 106% 1,2-Dichloroethane-d4 57.8 116% Toluene-d8 60.5 121% I p-Bromofluor°benzene (BFB) 58.7 117% I Halcyon Laboratories, Inc. EPA 8260B, Laboratory Report. Water SamPle Results in uglL Certification# ~1920 , CLIENT: EzC Remediation, LLC 5300 Woodmere Drive, Suite 105 · ' Bakersfield, CA 93313 Project ID: Mr, Fast Date: 8/15/2003 Report Sample ID · 5982 MW-1 Analyte Result Method RL. Units 5 Oxygenates t-Butanol (TBA) Tert-Butyl Alcohol 40 2.5 ug/L Methyl Tert-Butyl Ether (MTBE) ND 0.5 ug/L Diisopmpyl Ether (DIPE) ND 0.5 ug/L Ethyl Tert-Butyl Ether (ETBE) ND 0.5 Tert-Amyl Methyl Ether (TAME) ND 0.5 ug/L BTEX Components Benzene ND 0.5 ug/L Toluene ND 0.5 ug/L Ethylbenzene 5.0 0.5 ug/L m & p Xylenes 6.0 0.5 ug/L o Xylenes ?0.0 0.5 ug/L I Internal Standards Results- % Recovery I Benzene, fluoro 50.0 100% Benzene-d5, chloro- 50.0 100% I 1,4-Dichlorobenzene-d4 50.0 100% Surrogate Standards I Methane, dibromofluoro- 50.9 102% . 1,2-Dichloroethane-d4 57.1 114% I Toluene-d8 58.2 116% p-Bromofluorobenzene (BFB) 57.9 116%' Halcyon LaboratorieS, Inc. EPA 8260B Laboratory Report . Water Sample Results in ug/L Certification # 1920 CLIENT: EzC Remediation, LLC · 5300 Woodmere Drive, Suite 105 Bakersfield, CA 93313 Project ID ' Mr. Fast Report Date ' 8/15/2003. I Sample ID ' 5983 MW-2 I Analyte Result Method RL Units i 5 Oxygenates t-Butanol CrBA) Tert-Butyl Alcohol ND 2.5 ug/L i Methyl Tert-ButYl Ether (MTBE) ND 0.5 ug/L Diisopropyl Ether (DIPE) ND 0.5 ug/L · Ethyl Tert-Butyl Ether (ETBE) ND 0.5 ug/L Tert-Amyl Methyl Ether (TAME) .ND 0.5 ug/L I BTEx Components Benzene' ND 0.5 ug/L Toluene ND 0.5 ug/L EthYlbenzene ND 0.5 ug/L I m & p Xylenes ND 0.5 ug/L o Xylenes ND 0.5 ug/L i Internal Standards Results % Recovery Benzene, fluoro 50.0 100% Benzene-d5, chl0ro- 50.0 100% I ,4-Dichlorobenzene-d4 50.0 100% 1 Surrogate Standards I Methane, dibromofluoro- 50.8 ! 02% 1,2-DichlorOethane-d4 58.4 117% I Toluene,d8 59.1 118% ' p-Bmmofluoroben~,ene (BFB) 59.0 118% Halcyon. Laboratories, inc. ~ EPA 8260B Laboratory Report Water Sample Results in ug/L ICertification # 1920 i cLIENT: E2C Remediation, LLC 5300 Woodmere Drive, Suite 105 .~ Bakersfield, CA 93313 ' I Project ID · Mr. Fast l' Report Date ' 8/15/2003 I Sample ID ' 5984 MW-3 'l i Analyte Result Method RL Units 5 Oxygenates ~ I t-Butanol (TBA) Tert-Butyl Alcohol ND 2.5 ug/L i Methyl Tert-Butyl Ether (MTBE) ND 0.5 ug/L Diisopropyl Ether (DIPE) ND 0.5 ug/L Ethyl Tert-Butyl Ether (ETBE) ND 0.5 ug/L Tert-Amyl Methyl Ether (TAME) ND 0.5 ug/L I BTEX Components I 0.5 ug/L Benzene -Toluene ND 0.5 ug/L Ethylbenzene ND 0.5 ug/L I m & p Xylenes ND 0.5 ug/L o Xylenes ND 0.5 ug/L I I Internal Standards Results % Recovery Benzene, fluoro 50.0 100% Benzene-dS, chloro- 50.0 100% I 50.0 100% 1 ,4-Dichlorobenzene-d4 Surrogate Standards I Methane~ dibromofluoro- 53.3 107% 1,2-Dichloroethane-d4 , 56.8 114% I . Toluene-d8 62.6 125% p-Bromofluorobenzene (BFB) 55.8 112% I Halcyon Laboratories, Inc. EPA 8260B, Laboratory 'Report Water Sample Results in ug/L Certification # 1920' CLIENT: E2C Remediation, LLC 5300 Woodmere Drive, Suite 105 Bakersfield, CA 93313 Project ID: Mr, Fast Report Date: 8/15/2003 I Sample ID · 5985 MW-4 I Result Method RL Units Analyte i 5 Oxygenates t-Butanol ('I'BA) Tert-Butyl Alcohol ND. 2.5 ug/L Methyl Tert-Butyl Ether (MTBE) ND 0.5 ug~ I DiisoproPyl Ether (DIPE) ND 0.$ Ethyl Ted-BUtyl Ether (ETBE) ND 0.5 ug/~ Tert-Amyl Methyl Ether (TAME) ND 0.5 ug/L I BTEx Components I Benzene ND 0.5 ug/L Toluene ND 0.5 u~ Ethylbenzene ND- 0.5 I m & p Xylenes ND 0.5 ug/L o Xylenes ND 0.5 ug/L ! I 'internal Standards Results % Recovery Benzene, fluoro 50.0 100% Benzene-d5, chloro- 50.0 100% I 1,4-Dichlorobenzene-d4 5O.O I O0% Surrogate Standards I Methane, dibromofluom- 54.1 108% 1,2-Dichloroethane-d4 58.3 117% iI Toluene-d8 58.0 116% !· p-Bromofluorobenzene (BFB) 62.2' 124% I · Halcyon Laboratories~ Inc. EPA 8260B Laboratory Report Water Sample Results in ug/L Certification # 1920 CLIENT: E2C Remediation,~ LLC 5300 Woodmere Drive, Suite 105 Bakersfield, CA 93313 Project ID' Mr. Fast Report Date 8/15/2003 Sample ID · 5986 MW'5 I' Analyte Result Method RL , units 5 Oxygenates I t-Butanol (TBA) Tert-Butyl Alcohol ND 2.5 ug/L Methyl Tert-Butyl Ether (MTBE) ND 0.5 ug/L I Diisopropyl (DIPE) 0.5 ug/L Ether Ethyl Tert-Butyl Ether (ETBE) ND 0.5 ug/L Tert-Amyl Methyl Ether (TAME) ND 0.5 ug/L I BTEx Components I Benzene ND 0.5 ug/L Toluene ND 0.5 ug/L Ethylbenzene ND 0.5 ug/L ' I m & p Xylenes ND 0.5 ug/L o Xylenes ND 0.5 ug/L I InternaI Standards ResultS % Recovery I Benzene, fluorO 50.0 100% Benzene-d5, chloro- 50.0 100% I 1,4-Dichlorobenzene-d4 50.0 ' 100% Surrogate Standards I Methane, dibromofluoro- 52.2 104% 1,2-Dichloroethane-d4 57.9. 116% I Toluene-d8 56.2. 112% p-Bromofluorobenzene (BFB) 58.7 117% I Halcyon Laboratories, Inc. EPA 8260B Laboratory Report Water Sample Results in ug/L Certification # 1.920 CLIENT: E2C Remediation, LLC 5300 Woodmere Drive, Suite 105 Bakersfield, CA 93313 Project ID' Mr. ·Fast Report Date · 8/15/2003 samPle ID' 5987 MW-6 I Analyte Result Method RL Units i 5 Oxygenates t~Butanol (TBA) Tert-Butyl Alcohol ND 2.5 ug/L Methyl Tert-Butyl Ether (MTBE) ND 0.5 ug/L I DiisopropYl (DIPE) ND 0.5 ug/L Ether Ethyl Tert-Butyl Ether (ETBE) ND 0.5 ug/L Tert-Amyl Methyl Ether (TAME) ND 0.5 ug/L I BTEx Components I Benzene ~' ND 0.5 ug/L Toluene ND - 0.5 ug/L Ethylbenzene ND '0.5 ug/L I m & p Xylenes ND 0.5 ug/L o Xylenes ND 0.5 ug/L i Internal Standards Results % Recovery Benzene, fluoro 50.0 100% Benzene-d5, chloro-. 50.0 1,00% I 1,4-Dichlorobenzene-d4 50.0 100% Surrogate Standards .' I Methane, dibrOmofluoro- 51.1 102% 1,2-Dichloroethane-d4 55.3 111% I Toluene-d8 58.0 116% p-Bromofluorobenzene (BFB) 59.1 118% HalcyOn Laboratories, Inc. EPA 8260B Laboratory Report Water Sample Results in ug/L I Certification fl- 1920 i CLIENT: E2C Remediation, -LLC 5300 Woodmere Drive, Suite 105 Bakersfield, CA 93313 I P roject ID' Mr. Fast I Report Date · ' 8/15/2003 ISample ID · 5988 MW-9 Analyte ReSult Method RL Units 5 OxYgenates t, Butanol (IBA) Ted-Butyl Alcohol ND 2.5 ug/L Methyl Tert-Butyl Ether (MTBE) . ND 0,5 . ug/L Diisopropyl (DIPE) · 0,5 ug/L Ether Ethyl Tert-ButYl Ether (ETBE) ND 0.5 ug/L Tert-Amyl Methyl Ether (TAME) ND .0.5 ug/L BTEX Components Benzene ND' 0.5 .ug/L Toluene . ND . , 0.5 ug/L Ethylbenzene ND 0.5 ug/L m & p Xylenes ND 0.5 ug/L o Xylenes ND 0,5 ug/L Internal Standards Results % Recovery Benzene, fluom 50.0 100% Benzene-d5, chloro- 50.0 100% 1,4-Dichlorobenzene-d4 50.0 100% Surrogate Standards Methane, dibromoflUoro- 54.2 108% 1,2-Dichloroethane-d4 56.9 114% Toluene-d8 58.5 117% p-Bromofluorobenzene (BFB) 62.6 125% Halcyon Laboratories, Inc. ~ EPA 8260B Laboratory Report WaterSample Results in ug/L ICertification # 1920 i CLIENT: ' EzC Remediation, LLC · 5300 Woodmere Drive, Suite 105 Bakersfield, CA 93313 I P roject ID' IVirl Fast I Report Date · 8/15/2003 ISample ID · 5993 MW-10 I Analyte Result Method RL Units i 5 OXygenates t~Butanol (TBA) Tert-Butyl Alcohol ND 2.5 ug/L Methyl Tert-Butyl Ether (MTBE) ND 0.5 ug/L I Diisopropyl Ether (DIPE) ND 0.5 ug/L Ethyl Tert-Butyl Ether (ETBE) ND 0.5 ug/L Tert-Amyl Methyl Ether (TAME)- ND 0.5 ug/L I BTEx Components I Benzene ND 0.5 ug/L ~ Toluene 'ND 0.5 ug/L Ethylbenzene 2.0 0.5 ug/L I m & p Xylenes 3.0 0.5 ug/L o Xylenes 'l. 1 0.5 ug/L I i Internal Standards Results % Recovery Benzene, fluom 50.0 100% Benzene-d5, chloro- 50.0 100% I1,4-DichlOrobenzene-d4 50.0 100% Surrogate Standards I · Methane, dibromofluoro- 39.8 80% '1,2-Dichloroethane-d4 41.8 84% I' Toluene-d8 40.5 81% p-Bromofluoro'benzene (BFB) 40.9 82% Halcyon Laboratories, Inc. EPA 8260B Laboratory' Report water Sample Results in ug/L I Certification # 1'920 i CLIENT: E2C Remediation,'LLC 5300 Woodmere Driye, Suite 105 Bakersfield, CA 93313 I P roject ID · Mr. Fast I Report Date · 8/15/2003 ISample ID ' 5991 MW-14 I Analyte Result Method RL Units i 5 Oxygenates t-Butanol (TBA) Tert-Butyl AlcohOl ND 2.5 ug/L Methyl Tert-Butyl Ether (MTBE) ND 0.5 ug/L I Ether ND 0.5 ug/L Diisopropyl (DIPE) Ethyl Tert-Butyl Ether (ETBE) ND 0.5 ug/L Tert-Amyl Methyl Ether(TAME) ND 0.5 ug/L I BTEx Components I Benzene ND 0.5 ug/L Toluene ND 0.5 .ug/L Ethylbenzene ' 4.4 0.5 ug/L I m & p Xylenes . 6.0 0.5 ug/L o Xylenes 3.0 0.5 ug/L 1 i Internal Standards Results % Recovery Benzene, fluoro 50.0 100% 'Benzene-d5, chloro- 50.0 100% I 1,4-Dichlorobenzene-d4 50.0 100% Surrogate Standards I Methane, dibromofluoro- 44.5 89% 1,2-Dichlomethane-d4 45.0 90% I Toluene-d8 41.7- 83% p-Bromofluorobenzene (BFB) 40.7 8!% Halcyon Laboratories, Inc. EPA 8260B Laboratory Report water Sample Results in ug/L Certification # 1920 CLIENT: E2C Remediation, LLC 5300 Woodmere Drive, Suite 105 Bakersfield, CA 93313 Project ID · Mr. Fast ' Report Date · 8/15/2003 Sample ID · 5992 MW-15-S I Analyte Result Method RL Units 5 Oxygenates I t-Butanol Ci'BA) Ted-Butyl Alcohol ND 2.5 ug/L Methyl Tert-Butyl Ether (MTBE) ND 0.5 ug/L I Diisopropyl Ether (DIPE) ND 0.5 ug/L Ethyl Tert-Butyl Ether (ETBE) ND 0.5 ug/L Tert-Amyl Methyl Ether (TAME) ND 0.5 ug/L I BTEX Components I Benzene ND 0.5 ug/L Toluene ND 0.5 ug/L Ethylbenzene 4.0 0.5 ug/L I m & p Xylenes 5.0 0.5 ug/L 0 X¥1enes 2.0 0.5 ug/L I Internal Standards Results % Recovery I Benzene, fluoro 50.0 100% 'Benzene-d5, chloro- 50.0 100% I 1,4-Dichlorobenzene-d4 50.0 100% Surrogate Standards I Methane, dibromofluoro- 42.0 84% 1,2-Dichloroethane-d4 41.8 84% I Toluene-d8 41.1 82% p-Bromofluorobenzene (BFB) 42.4 85%. I I Halcyon Laboratories, Inc. I EPA 8260B LaboratOry Report Water Sample Results in ug/L ICertification # 1920 ICLIENT: EzC Remediation, LLC 5300 Woodmere Drive, Suite 105 Bakersfield, CA 93313 I Project ID: Mr. Fast I Report Date: 8/15/2003 ISample ID · 5989 MW-17-S I Analyte Result Method RL Units 5 Oxygenates t-Butanol (TBA) Ted-Butyl Alcohol ND 2.5 ug/L Methyl Ted-Butyl Ether (MTBE) ND 0.5 ug/L I Diisopropyl ND 0.5 ug/L Ether (DIPE) Ethyl Ted-Butyl Ether (ETBE) ND 0.5 ug/L Tert-Amyl Methyl Ether (TAME) ND 0.5 ug/L · BTEX Components I Benzene ND 0.5 ug/L Toluene ND 0.5 ug/L Ethylbenzene ND .0.5 ug/L I m & p Xylenes ND 0.5 ug/L o Xylenes ND 0.5 ug/L I I Internal Standards Results % Recovery Benzene,· fluoro 50.0 100% Benzene-d5, chloro- 50.0 100% I 1,4-Dichlorobenzene-d4 50.0 1 00% Surrogate StandardS I Methane, dibromofluoro- 49.0 98% 1,2-Dichloroethane-d4 54.4 109% Toluene:d8 56.5 113% p-Bromofluorobenzene (BFB) 58.4 117% ' HalcYon Laboratories, Inc. - I EPA 8260B Laboratory Report Water Sample Results in ug/L iCertification # 1920 CLIENT: E2C Remediation, LLC I 5300 Woodmere Drive, Suite 105 Bakersfield, CA 93313 I Project ID · MR. FAST P~eport Date' 8/15/2003 I Sample ID' 5990 MW-18 Analyte, Result Method RL Units 5 Oxygenates t-Butanol (TBA) Tart-Butyl Alcohol ND 2.5 ug/L Methyl Tert-Butyl Ether (MTBE) ND 0:5 ug/L Diisopropyl Ether (DIPE) ND 0.5 ug/L Ethyl Tart-Butyl Ether (ETBE) ND 0.5 ug/L Tert-Amyl Methyl Ether (TAME) ND 0.5 ug/L BTEX Components Benzene ND 0.5 Ug/L Toluene ND 0.5 ug/L Ethylbenzene ND 0.5 ug/L m & p Xylenes ND ~ 0.5 ug/L o Xylenes ND 0.5 ug/L I Internal Standards Results % Recovery I fluoro 50.0 100% Benzene, Benzene-d5, chloro- 50.0 100% 1,4-Dichlorobenzene-d4 50.0 . 100% I Surrogate Standards Methane, dibromoflu0ro- 58.0 116% I 1,2-Dichloroethane-d4 65.0 130% Toluene-d8 64.0 128% p-Bromofluorobenzene (BFB) 6'6.0 132%' I ~ am ~ ~ m,. ~ ~ ~ ~ ~. ~ ~ .~ ~ ~ .~ m ~ ~ Icyon Laboratories' · Chain of Custody Form Clion[ Name: E~C Reined ation LLC 661.831.6906 .fax 661.83i .6234 Analysis Requested Sample Matrix Client Address':. 5300 Woodmere Dr.,. Sui[e 105. Bakersfield, CA 93313 ~~eous Project Manager: ~, LZ iA~-/LO,v ~ Soil" Sample[ Name: ~ ~_~_. ~ Acidified Sample Date Sample Time Sample Description and Container Type ~ 'Z/O ~ ~ Commenls ~'V~e/.~'~ l I'~G m'~- ~qz. _ ~.O ~ 1Tu-r-~'~around Time Requested: 24 Hour 48 Hour_ 5-Day Standard Relinquished By: ,,~.,-r~.,,¥~ ~./,/~4/ Date:o~)/:)~/,O.~j~R'-~'ii~'~'uisl~edBy: ~ -. ': ' Dale: . Received By: Date: ]__ ' .. Date: Received By' Halcyon Laboratories, Inc.. i I Laboratory Report Certification # 1920 I CLIENT E2C Remediation, LLC Project Name: Mr. Fast 5300 Woodmere Drive, Suite 105 Bakersfield, CA 93313 Matrix: Aqueous I Sampled by: G. Halcon/K Velcz I TESTS: TPH Gas by EPA 8015M TPHg AnalYsis: 8/14/2003 Date of Report: 8/19/2003 Units: ug/L I Sample f~: 6016 6015 6018 6017 6019 . 3020 Date Sampled: 8/6/2003 8/6/2003 8/6/2003 8/6/2003 8/6/2003 8/6/2003 DL ug/L I iSample Description: MW-7 MW-8 MW-11-R MW-12 MW-13 MW-19 i TP1R Gasoline ND 6,060 3,920 ND 4,180 1,370 50 Surrogate Recovery % 81 88 85 81 84 .80 Sample #: Date Sampled: I)L ug/L I Sample Description: I Surrogate Recovery % Sample #: I Date Sampled: DL ug/L Sample Description: I Surrogate Recovery % ~ (~ I ND - Non-Detect at given DL ' NA - Result not available l~rincipal Analyst: Alexander Candia I Halcyon Laboratories, Inc. EPA 8260B Laboratory Report Water Sample Results in ug/L Certification # 1920 CLIENT: EzC Remediation, LLC 5300 Woodmere Drive, Suite 105 Bakersfield, CA 93313 Project ID · ' Mr. Fast I Report Date ' 8/15/2003 Sample ID · 6016 MW-7 I i Analyte Result Method RL Units 5 Oxygenates I t-Butanol (TBA) Tert-Butyl Alcohol ND 2.5 ug/L Methyl Tert-Butyl Ether (MTBE) ND 0.5 ug/L · I Diisopropyl Ether (DIPE) ND 0.5 ug/L Ethyl Tert-Butyl Ether (ETBE) ND 0.5 ug/L Tert-Amyl Methyl Ether (TAME) ND 0.5 ug/L I BTEX Components i Benzene ND' 0.5 ug/L Toluene 3.0 0.5 ug/L EthylbenZene 9.0 0.5 ug/L m & p Xylenes ]22.0 0.5 ug/L I o Xylenes 2T0 0.5 ug/C Internal Standards Results % Recovery Benzene, fl uoro 50.0 100% Benzene-d5, chloro- 50.0 100% 1,4-Dichlorobenzene-d4 50.0 100% Surrogate Standards Methane, dibromofluoro- 52.6 105% 1,2-Dichloroet ha ne-d4 60.3 121% Toluene-d8 62.5 125% p-Bromofluorobenzene (BFB) 60.9 122% 1 Halcyon Laboratories, Inc. EPA'8260B Laboratory Report Water Sample Results in ug/L Certification # 1920 CLIENT: EzC Remediation, LLC 5300 Woodmere Drive, Suite 105 Bakersfield, CA 93313 Project ID · Mr. Fast Report Date. 8/15/2003 Sample ID - 6015 MW-8 Analyte Result Method RL Units· 5 Oxygenates t-Butanol (TBA) Ted-Butyl Alcohol ND 2.5 ug/L' Methyl Ted-Butyl Ether (MTBE) ND 0.5 ug/L Diisopropyl Ether (DIPE) ND 0.5 ug/L Ethyl Ted-Butyl Ether (ETBE) ND 0.5 ug/L Ted-Amyl Methyl Ether (TAME) ND 0.5 ug/L BIEX Components Benzene ND 0.5 ug/L Toluene 8450.0 0.5 ug/L Ethylbenzene 2430.0 0.5 ug/L m & p Xylenes 5750.0 0.5 ug/L o Xylenes 3880.0 0.5 ug/L Internal Standards Results % Recovery I Benzene, fiuoro 50.0 100% Benzene-d5, chloro- 50.0 100% i 1,4-Dichlorobenzene-d4 50.0 100% Surrogate Standards I Methane, dibromofluoro- 48.1 96% 1,2-Dichloroethane-d4 53.2 106% Totuene-d8 54.5 109% I p-Bromofiuombenzene (BFB) 55.6 111% Halcyon Laboratories, Inc. EPA 8260B Laboratory Report Water Sample Results in ug/L Certification # 1920 CLIENT: E2C Remediation, LLC 5300 Woodmere Drive, Suite 105 Bakersfield, CA 93313 Project ID · Mr. Fast I Report Date ' 8/15/2003 Sample ID: 601'8 MW-II-R ! i Analyte Result 'Method RL Units 5 Oxygenates. I t-Butanol (TBA) Ted-Butyl Alcohol ND 2:5 ug/L Methyl Tert-Butyl Ether (MTBE) ND 0.5 ' ug/L I Diisopropyl Ether (DIPE) ND 0.5 . ug/L Ethyl Tert-Butyl Ether (ETBE) ND 0.5 ug/L Tert-Amyl Methyl Ether (TAME) ND 0.5 ug/L I BTEX Components i Benzene 1.2 0.5 ug/L Toluene 12120.0 0.5 ug/L Ethylbenzene 1800.0 .0.5 ug/L m & p Xylenes 3260.0 0.5 ug/L I o Xylenes' 3460.0 0.5 ug/C I Internal Standards Results % Recovery I Benzene, fluoro 50.0 100% Benzene-d5, chloro- 50.0 100% i 1,4-Dichlorobenzene-d4 50.0 100% Surrogate Standards I Methane, dibromofluoro- 52.6 105% 1,2-Dichloroethane-d4 60.3 121% Toluene-d8 62.5 125% .ll p-Bromofluorobenzene (BFB) 60.9 122% Halcyon Laboratories, Inc. EPA 8260B Laboratory Report Water Sample Results in ug/L Certification # 1920 CLIENT: E2C Remediation, LLC 5300 Woodmere Drive, Suite 105 ,' Bakersfield, CA 93313 'Project ID. Mr. Fast Report Date · 8/15/2003 Sample ID - 6017 MV¢-12 Analyte - Result Method RL Units $ Oxygenates t-Butanol (TB^) Ted-Butyl Alcohol ND '.2.5 ug/L Methyl Ted-Butyl Ether (MTBE) ND 0.5 ug/L Diisopropyl Ether (DIPE) ND 0.5 ug/L Ethyl Ted-Butyl Ether (ETBE) ND 0.5 ug/L Tert-Amyl Methyl Ether (TAME) ND 0.5 ug/L BTEX components Benzene ND 0.5 ug/L Toluene 69.7 0.5 ug/L Ethylbenzene 700.0 0.5 ug/L m & p Xylenes 840.0 0.5 ug/L 260.0 0.5 ug/L o Xylenes Internal Standards Results % ReCovery I Benzene, fluoro 50.0 100% Benzene-dS,. chloro- 50.0 100% i 1,4-Dichlorobenzene-d4 50.0. 100% Surrogate Standards I Methane, dibromofluoro- 49.7 99% 1,2-Dichloroetha ne-d4 55.5 111% Toluene-d8 57.5 115% I p-Bromofluorobenzene (BFB) ~ 59.6 119% Halcyon Laboratories, inc. EPA 8260B Laboratory Report Water Sample Results in ug/L Certification # 1920 CLIENT: · EzC Remediation, LLC 5300 Woodmere Drive, Suite 105 Bakersfield, CA 93313 Project ID · Mr. Fast Report Date · 8/15/2003 Sample ID ' 6019 MW-13 Analyte Result Method RL Units 5 Oxygenates t-Butanol (TBA),Ted-Butyl Alcohol ND 2.5 ug/L Methyl Tert-Butyl Ether (MTBE) ND 0.5 ug/L Diisopr0pyl Ether (DIPE) ND 0.5 ug/L Ethyl Tert-Butyl Ether (ETBE) ND 0.5 ug/L Tert,Amyl Methyl Ether (TAME) ND 0.5 ug/L BTEX Components Benzene 5.0 0.5 ug/L Toluene . 535.0 0.5 ug/L Ethylbenzene 730.0 0.5 ug/L m & p Xylenes 2914.0 0.5 ' ug/L o Xylenes 1794.0 0.5 ug/L Internal Standards ReSults % Recovery I Benzene, fluoro 50.0 100% Benzene-d5,.Chloro- 50.0 100% i 1,4-Dichlorobenzene-d4 50.0 100% Surrogate Standards I Methane, dibromoflUoro. 51.7 103% 1 ;2-Dichloroethane-d4 56.7 113% Toluene-d8 60.8 122% I p-Bromofluorobenzene (BFB) 61.6 123% Halcyon Laboratories, Inc. EPA 8260B. Laboratory Report Water Sample Results in ug/L Certification # 1920 CLIENT: EzC Remediation, LLC 5300 Woodmere Drive, Suite 105 Bakersfield, CA 93313 Project ID · Mr. FaSt Report Date · 8/15/2003 Sample ID - 6020 MW-19 Analyte Result Method RL Units 5 Oxygenates t-Butanol CTBA) Ted-Butyl Alcohol Ng 2.5 ug/L Methyl Ted-Butyl Ether (MTBE) ND 0.5 U~/L Diisopropyl .Ether (DIPE) ND 0.5 us/L Ethyl Ted-Butyl Ether (ETBE) ND 0.5 Tert-Amyl Methyl Ether (TAME) ND 0.5 ug/L BTEX Components Benzene 3.0 0.5 ug/L Toluene 200.0 0.5 ugh, Ethylbenzene 1660.0 0.5 u~[, m & p Xylenes 1980.0 0.5 u~L o Xylenes 1200.0 0.5 u~_, Internal Standards Results % Recovery I Benzene, fluoro ' 50.0 100% Benzene-d5, chloro- 50.0 100% i 1,4-Dichlorobenzene-d4 50.0 100% Surrogate Standards I - 49.1 98% Methane, dibromoflu0ro- 1,2-Dichloroetha ne-d4 56.7 113% Toluene-d8 58.1 116% IP-Bromofluorobenzene (BFB) 61.2 122% I I Project Number 1801BK05 November 15. 200,'~ ! ! ! ! ! ! APPENDIX E I Copies of Non-Hazardous .Manifests ! ! i £~C F~emedia#on Appendix WASTE MANIFEST ........... Document ol of · 3. Generator's Name and Mailing Address 14. Generator's Phone ( ~,~,/ ) 5. Transpo~er 1 Company Name . 6. uS EPA ID Number A. Transpo~er's Phone 7. Transporter 2 Company Name 8. US EPA ID Number B.'Transporter's Phone I ........... J'JJ 9.~~ ~Designated Facili~ ~' ,~ ~ ~Name and Site Address 10. US EPA ID Number :C. Facility's~hone I 1. Waste Shipping Name and Description 12. Containers 13. 14. Total Unit ~a ~ No. Type Quanti~ Wt/Vol I d. D. Additional Descriptions for Materials Listed Above Handling Codes for Wastes Listed Above II ~,~-,~ ~ ~ ~-- ~ - ,/- ~, ~ ~-~, 15. Special Handling Instructions and Additional Information II Il"r'''~'''"'~"a'e 's~~a~o~ ~Signa,ure"(.~.. MonthOayYear ' 17. Transporter 1 Acknowledgement of Receipt of Materials~'- I~Printed/TypedName ~ Signature MonthOayYear · - '1 I I 18. Transporter 2 Acknowledgement of Receipt of Materials Printed/Typed Name J Signature Month Day Year Ii Faciliw Owner or Operator': Ce.ification of receipt of waste materials covered b~ this manifest except as noted in Item 19. 2O. NON-HAZARDOUS Manifest 1. Generator's US EPA ID No. i2. Page 1 J iWASTE MANIFEST 3. Generator's Name and Maillng Address Y! 4. Generator's Phone ( ~_~(~ ~. Transporter 1 Company N~me 6. US EPA ID Number 7. Transporter 2 Company Name 8. US EPA ID Number B.'Transporter's Phone 9. Designated FacilityName and Site Address 10. US EPA ID Number C. Facili~'s Phone 11. Waste Shipp/ngNameand Description 2. Containers 13. Total Unit · . . Ii ~. Additional Descriptions ~or Materials Listed Above E. Handling Codes for Wastes Lis~ed Above 15. Special Handling Instructions and Additional Information ~. GENERATOR'S CERTIFICATION: I certify the materials described above · on this manifest are~t er regubtions for repoding proper disposal of Hazardous Waste. ' Priqted/Typed Name_ Month Day Year ~7, Transporter I Acknowledgement IPrinted/TypedName ISignature Month Day Yeor 18. Transport~r 2 Acknowledgementof Recelptof Materials I I ~ Printed/Typed Name ~Signature Month Day Year . F*cil~ty Owner or O~erotor: Cortificofion of r*cei~t o~ wo~*e m~teriol~ covere~ b7 thi~ monffo~t excep~ ~ noted in I~em 19. I Printed/Typed Name' NON-HAZARDOUS 1. Generator's US EPA ID No. Manifest 2. Page 1 WASTE MANIFEST ..... I D0cument[o .* '-~?. '. '. . ~ of 3. Generator's Name and Mailing Address 4. Generator's Phone ( ~,~ / ) .~.~d--~','~ 9 ] ~ J~l~ 5. Transporter1 Company Name 6. US EPA ID Number A.(~~T/.ranspoHer'sPhone/~ -- . ~ ~e~,~ [¢~.&. o.~.a.~.3.~.g.~. / ~1] 7. Transpolar 2 Company Nome 8. US EPA ID Number B. Tronsporter's Phone I, I 9. Designated Facility Name and Site Address 10. US EPA ID Number C. Phone 1 I. W~ste Shlppin~ N.me ond ~e~crlption ]2. Total' Unit I I · ~. ' . . . I[ .... . Additional Descriptions for Materials Listed Above E. Handling Codes for Wastes Listed Above 0 ~ '- ~ - ~- o6/3 ~-~ / 15. SpeciaFHandling Mstructions and Additional Information [ Pdq~d/Zyped Name ~ lSig~a~ure". ~7. Transporter 1 Acknowledgement of Receipt of Materials J ~ [ ~ '-- ~ Printed/Typed Name Signature Month Day Year 18. Transporter 2 Acknowledgement of Receipt of Materials Printed/Typed Nome Signature Month Day Year 19. Discrepancy Indication Space Facffi~ Owner Operator: Ce~iflcafiop receipt of waste materials covered by this manifest except as noted in Item 19. ' Printed/TypedName ,.)~[.,1, ~,.~,.~.~ ]Signature ~ ~ . Month Day ~ear ~ ~~~.~ ~IGIN~- RETURN TO NON-HAZARDOUS '~.Generator's US EPA ID No. Document[o. 12. Page 1 WASTE MANIFEST ........ of I 3. Generator's Name and Mailing Address .... 5. T~onsporter 1 Company Name 6. US EPA ID Number A._Transpo~er's Phone _ 7. Transporter 2 Company Name 8. US EPA ID Number B.~Tr~nsporter's Phone 9. Designated Facility Name and Site Address 10. US EPA ID Number .' C. Facili~'s Phone l, Wos~e Shipping Name on~ Das¢ri~fion 12. Conioiaers b. ). A~ifional Descriptions {or Materials Listed A~ove ~. ~andlin; Codes for Wasies Liste~ Abow 15. Speciat Handling Instructions and Additional Information n ... 'riq~dlTypedName . ~.:~ ~!_ L 17. Transporter 1 Acknowledgement of Receipt of Materials Printed/Typed Nome Signature , Month Day Year 18. Transporter 2 Acknowledgement of Receipt of Materials Printed/Typed Name' ~ Signature Month Day Year I 2~. Facili~ Owner or Operator: CeHificationof receipt of waste materials covered bx this manifest except as noted in Item 19. ~ ~' Signature Manifest NON-HAZARDOUS 1. Generator's US EPA ID No. Document[o, 2. Page 1 WASTE MANIFEST ' ' . . , , of 1 3. Generator's Name and Moiling Address 4. Generator's Phone ( ~ / ) 5. Transporter 1 Company N~me ii, 8. US EPA ID Num~er B. Trans~orter's P~one J . . ......... 1 1, Waste Shipping Nome and Description ' 12. Containers 13. 14. Total Unit a. ~ --/~ ~ ~ ~, ~_ bj~z~ No. Type Quanti~ Wt/Vol J b. ,iC. I d. II ~ iD, Additional Descriptions for Materials Listed Above E. Handling Codes for Wastes Listed Above 15. Special Handling Instructions and Additional Information on this manifest are t er lations for repo~ing proper disposal o~ Hazardous Waste. - Month Day Year ~7. Transporter I Acknowledgement of Receipt of Materials ~ Iprinted/TypedName rSignature Mon'th Day Year 18. Transpoder2 Acknowledgement of Receipt of Materials I I ' I Printed/Typed Name Signature ' , Month Day Year li' Discrepancy Indicoti°n Space 0 . F~dli~ Owner ~r Operator: Certification ~ re~elpt ~ w~te m~f~ri~l~ ~ere~ ~ t~i~ ~nffe~t ~x~ept ~ n~t~ in Item ]9. ~ 'Prinf~/Typed N~me . '.~ ~.~-., , ~., ~,.~ .>, ..~ : I 3. ~.4.,Generat°r'sNON'HAZARDOUSwAsTE/---/eS ~Name aadMANIFEST~:4.~Ma,,~ng Address t]' aenerat°r's us EpA I[~ N°' ........... tMan~fest~o~*~t~.. ~. ~.,.1 ~o, ~ 4. Generator's Phone ( ~ / ) ~--~gJ~ 5. Transporter 1 Company N;me 6. US EPA ID"NuMb~: A. Transporter's Phone __ ~ 7. Tron~porter 2 Compon~ ~me ~ 8. ~S ~A I~ ~umber B.. lron~porter'~ Phone ' 9. Oesi~noted [~cilit7 Nome ~nd Sffe Addre,~ 10. ~S fi~A I~ ~umber C. ~*cili~'~ Phone ] 1. Wolfe Shippin~ ~ome ond ~e~crlpt[on 12. Con~*iner~ 13. 14. Total Unit ' No. Type Quanti~ Wt/Vol II ~ b. i ! ffild. ' . . . ~. Addifionol Oe~cripfion~ {0r ~o*eriol~ [iste~ ~bovo E. Hondlin~ Code* {or W*~tes [i~/ed 15. Special Handling Instructions and Additional In~ormatlon j6. B~H~ATOR'S ¢~TIFICATION: I ~.~ify th~ materials described abov~ on this manifest dre ~t su~ f~dera~ regulations for r~poMing proper ~isposal GE Hazordous Waste. ~7. Transporter 1 Acknowledgement of Receipt of Materials Printed/Typed Name J Signature Month Year Day I 18. Transporter 2 Acknowledgement of Receipt of Materials IIPrinted/Typed Name ISignature MonthDayYear 0. Facflffy Owner or Operator: C~fi¢otion of reCeipt o~ waste material's covered by this manifest except as noted in Item 19. ::'' Printed/TypodName ~. ~ ~1' ISignature : ~ Month Day Year ~ NON-HAZARDOUS ~. Generator's US EPA ID NO. t ManJFes~ 2. Page 1 Document o. WASTE MANIFEST ........ . ....... of 3. Generator's Name and Mailing Address 5. Transpolar 1 Company N~me 6. US EPA ID Number k. Transporter's Phone 7. Transporter 2,Company Name 8. US EPA ID Number : Transp~rter's P~one 19. Designated Eacilit~ Name and Site Address ]0. US EPA ID Number C. Facility's P~one 11. W~ste SMpping Name and Description 12. ContaMer: 13. Total · . · d. O. Additional Descriptions ~or Materials Listed Above E. Handllnc Codes for Wastes Listed Abov~ 15. Special Handling Instructions and Additional Information 6. GENERATOR'S CERTIFICATION: I (enify t~e ~=t~ri=ls a~J~a =~o~ ~, t~;~ ~0,~[~ a~ ~ ¥~=~ ~g~=~;o,s [o, ~pon~,g ptope~ di~po[al of Haza~dou~ Waste. 7. Transporter 1 A~knowle~ge~ent o~ Receipt o~ Materials ~ '~ ~'~ -..~ 8. Transporte~ 2 Acknowledgement ~ Receipt ~ Materials Printed/Typed Name ~ Signature Month Day Year Discrepancy Indication Space . Facili~ Owner or Operator: Cenification of receipt of waste materials covered by this manifest except as noted in Item 19. Printed/Typed Name .,.. ~ Month Day Year ~~~~ ~a~N~- RETUR~ rO ~NE~r~ boo 8a-o,~,'rc~ I_,*~- 13~a~,~u.~C4.. ~G~ 4. ~enerofor's Phone( 8 ) ~' ~j~ / 5. Tronspo~er i Compony Nome 6. US EPA ID Number A.~ranspo~er's Pho~e ~ ~~~, ~ ~ Lc4.~. ~.~ .~ .~'.,; .~'. ~.. ~ ~3 / -~ 7. Tr~nsporfer 2 Company N~me 8. US E~A ID Number ~ B. Tr~n~p~rter'$ Phone 9. De$~gnofe~ F~ili~ N~me ond Sire Address ]0. US EPA ID Number C. ~cili~'~ Phone ~c~.L. 0~ .D. ~.~. 0.~ ]1. W~fe Shipping N~me ~nd Description Additional Descriptions for Materials Listed Above E. Handling Codes for Wastes Listed Above Special Handling Instructions and Additional Information ..GENERATOR'S CERTIFICATION: I certify the materials described above on ~ ' ~Name . -~-- ~- - ~____orting proper disposal of Hazardous Waste. '~ Month Day Year ~ Transporter 1Acknowledgement of Receipt of Material; Printed/Type. d Na'me Signature Month Day Year of Receipt of Materials ent l Signature Month Day Year i0. Facility Owner or Operator: Certification of receipt of waste materials covered by this manifest.except as noted i~ Item 19. 'Prlnted/TypedName"i ti' ~,,L~ /Signature q ~ ~J~~.~'~'~ ' ..~.:Y ORIGINAL -RETURN TO (2~NERATOR ' NON-HAZARDOUS ~. Generator's US EPA ID No. ~WASTE MANIFEST 3. Generator's Name and Mailing Address ~_o..o..o..o..o..o.~ O ~,~V D ~ ~ 4. ~n~=~o~'~ ~o.~ ( ~_~ ~ ~.~ 5. Transporter ] Compony Name 6. US EPA ID Number ~er's Phone ~ ee/~ ~ [~' ~. ~. ~ .~ .~3 · ~ .~. 7. Transporter 2 Company Nome 8. US EPA ID Number 9. Designated Focili~ Name and Site Address 10. US EPA ID Number ] ]. W~le S~ippin~ Name ~na Description ~o~=I D. Additional Descriptions for Materials Listea Above E. Handling Codes for Wastes Listed Above 15. Special Handling Instructions and Additional Information 16. GENERATOR'S CERTIFICATION I certify the materials described above on~ ' d/Typed Name ' orting proper disposal of Hazardous Month Day Year 7. Transporter 1 Acknowledgement of Receipt of Materials Printed/Typed Name l Signature Month Day Year owledgement of Receipt of M(~terials · Printed/Typed Name 1 Signature Month Day Year 19. Discrepancy Indication Space ~ ~,.~/~ ~/~/~f(~ ,! · O. Facility Owner or Operator: Certification of receipt of waste materials covered by this manifest except as noted in Item 19. Printed/Typed Name · t . ,~ ~,' ~ ~ / ' x.J-~['%j~ ~V//,~.'j'lj j,-J.~'~. , Signature ~ . . . Mont. h Day Year INAL -RETURN TO G~NERATOR NON-HAZARDOUS ~. Generator's US EPA ID No. Document[o. ' WASTE MANIFEST ..... . .......... o, j / 3. Generator's Name and Mailing Address 4. Generator's Phone ( ~,~/ ) 5. Transporter 1 Company Name 6. US EPA ID Number A.~ranspo~er's Phone ~ 7. Transporter 2 Company Name 8. US EPA ID Number B.' Transporter's Phone 19. Designated Facili~ Name and Site Address 10. US ~PA ID Number C. Facili~'s Phone 11, Waste Shipping Name and Description 13. Tatal iD. Additional Desc~'iptlons for Materials Listed Above E. Handling Codes for Wastes Listed Above 15. Special Handling Instructions and Additional Information 1~116. GENERATOR'S CERTIFICATION: I certify the materials described ob ..... this mo_n!!est ore~t su'~o f~.derot regulations for reporting proper disposal of H .... dous Waste. B Prirlt_ed/TypedName , signat,.ur~"( I/ II I 7. Transporter 1 Acknowledgement of Receipt of Materials .~ Printed/Typed Name ~ Signature Month Day Year 18. Transporter 2 Acknowledgement of Receipt of Materials !~i",e~/~"~ "am" ~Si..~,ure 19. Discrepancy Indication Space 2~. Fac;J;~y Owner o~ Op~rator: Ce~fficat~on of r~ceipt o~ wasfe materials covered by this manffgst except Os noted in Item 19. NON-HAZARDOUS Generator's US EPA ID No. Manifest 2. Page 1 WASTE MANIFEST D°cument r°' .... 3. Generator's Name and Mailing Address 4.' Oenerator's phane 6¢1 I 5. Transporter 1 Company N~me 6. US EPA ID Number ~. ~ranspoHer's Phone 7. Transporter 2 Company Name 8. US EPA ID Number i Tronspo~er's Phone 9. Designated Facility Name and Site Address 0 ' ' ' · US EPA ID Number C. Facili~'s Phone 11, Waste 5hipping Nome and Description " 12. Containers 13. Total No. Type Quanti~ c. ~D. Additional Descriptions for Materials Listed Above ~ E. Handling Codes for Wastes Listed Above ]5. Spedol Hondling Instructions on~ Ad~ffionol In~,,,,etion 16. GENERATOR'S CERTIFICATION: I ce.try the materials described above on this manifest are~t su era regulations ~or repo~ing proper disposal of Hazardous Waste. 17. Transporter I Acknowledgement of Receipt of MoteriaJs Printed/Typed Name Signature Month Day Year 18. Transporter 2 Acknowledgement of Receipt of Materials Printed/Typed Name J Signature Month Day Year 9. Discrepancy Indication Space jO. Facility Owner or Operator: CeHificatJQn of receipt of waste materials covered by this manifest except as noted in Item 19, ~tGIN~ - RETURN TO ]. Generator's US EPA ID No. 3. Generator's Name and Mailing Address 4. ~.nerator'sPhone( ~, ) ~,"' ' 5. Transpo~er I Company Name 6. US EPA ID Number A. ~ranspo~ 7. Transporter 2 Company Name 8. US EPA ID Number ~ B. Tronsporter's Phone 9. Designated Facility Name and Site Address J ~~ ~' ~ ~;~' '~~ ~ 10. US EPA ID Number ~' Facility's Phon~ .P. 37- 11. Waste Shipping Name and Description ~~ 12. Containers 13. Total _ D C. ). Additional Descriptions for Materials Listed Above E. Handling Codes for Wastes Listed Above 15. Special Handling Instructions and Additional Information 46. GENERATOR'S CERTIFICATION: I certify the materials described ab~ I--~Name , -~---- ortlng proper disposa! of H._.azardo_~us Waste. Month Day Year 17. Transporter 1 Acknowledgement of Receipt of Materials iPrinted/Typed Name 1Sig;oture MonthDayYear 18. Transporter 2 Acknowledgement of Receipt of Materials Printed/Typed Name 1 Signature Month Day Year 19. Discrepancy Indication Space I 20. Facility Owner or Operator: Certification of receipt of waste materials covered by this manifest except as n~? ~'~' · , Printed/Typed Name / x.j DI'~,j~' izV~.j'tj'j/.~'~, Signature ~ ' Mont_h /)ay Year j~ NON-HAZARDOUS ~. Generator's US EPA ID No. w^sT MAN EST 3. Generator's Name and Mailing Address 4. Oenerotor'sPhoneC {., ) ~" 5. Transporter 1 Company Name 6. .US EPA ID Number A..Transport~ Phone ~'~~ ~ ~ L~.~. ~.e .~ .~.~. ~ .~. ~. ~ ~ _~ ~_~.~ 7. Tronspor~er 2 Compony Nome 8. I 9. Deslgn=led Facilil~ Nome =nd ~i~ Address 0. US EPA ID Num~e~ F~cili~'s Phone 1. Waste Shlpping Name and Description [C~.~. ~ .P.~'.~.~.~.?. 2. Con~=iner~ ]8. ' Total ~. Additional Descriptions for Materials Listed Above 15. Special Handling Instructions and Additional Information CERTIFICATION: I ce.ify the materials described above on ! PriT~/~'~:d,~me.' ' o,ing proper disposal ofH .... dous Waste. IPrinted/Typed Nome ~Sig~ature Month Day ~eor 18. [ranspo~er 2 Acknowledgement of Receipt of Materials i Printed/Typed Name ~Signature Month Day -Year 19- Discrepancy Indicatian Space I .Facility Owner or Operator: Ce~ification of receipt of waste materials covered by t~is manifest except as noted in Item 19. I Printed/Typed Name NON-HAZARDOUS 7. Generator's US EPA ID No. WASTE MANIFEST ' 3. Generator"s Name and ~4al-'-Iing Address .... 4. ~enerator's Phone( 8(~/ ) 5. Transporter I Company Name 6. US EPA ID Number A. Zranspo~ Phone 7. Transporter 2 Company Name ~ ' ' ~ 8. US EPA ID Number B. Transporter's Phone 9. Designated Facili~ Name and Site Address 10. US EPA ID Number C. Facili~'s Phone 11. Waste Shipping Name and Description 12. Containers 13. 14. Total D. Additional Descriptions for Materials Listed Above J ' )E. Handlinc Codes for Wastes Listed Ahoy, 15. Special Handling Instructions and Additional Information CERTIFICATION: I cedify the materials described above on ~ ~ Priq~d/Typed Name~ .... oiling proper disposal of Hazardous Waste. ~ Month Day~ Year Transporter 1 Acknowledgement of Receipt of M'aterials ~ Printed/Typed Hame Signature Month Day Year J i8. Transporter 2 ~c~nowledgement of ,ece~pt of ~aterials I'1'1' Printed/TypedName ~SJgnature Month Day ' Year facili~ Owner or Operator: Certification of receipt of waste materials covered by this mam~es~ except as noted in Item 19. I I I ! I I I I ! I I I I I j I E2C REPIEDIATION, LLC ENVIRONPIENTAL/ ENGINEERING CONSULTANTS S i n c e 1 9 7 0 I THIRD QUARTER 2002 GROUNDWATER MONITORING REPO'RT ADDITIONAL GROUNDWATER CHARACTERIZATION · REPORT OF FINDINGS AND OFFSITE IRAP IMPLEMENTATION AND ONSITE REMEDIAL STATUS REPORT MR. FAST SERVICE STATION 600 Brundage Lane Bakersfield, California September 30, 2002 Prepared For: Mr. & Mrs. Ki Chu Yi 600 Brundage Lane Bakersfield, California Prepared By: E2C Remediation, LLC 5300 Woodmere Drive, Suite 105 Bakersfield, California 93313 Project Number 1801 BK03 il¸ I II .~ September 30, 2002 Mr. & Mrs. Ki Chu Yi Mr. Fast Service Station I 600 Brundage Lane Bakersfield, CA 93304 I Subject: Third Quarter 2002 Groundwater Monitoring Report, Additional Groundwater Characterization Report. of Findings, Offsite IRAP Implementation and Onsite Remedial Status Report I Mr. Fast Service Station 600 Brundage Lane I Bakersfield, CalifOrnia I Dear Mr. & Mrs. Yi: E2C Remediation, LLc (E2C) has completed Third Quarter 2002 Groundwater Monitoring at the property identified as the Mr. Fast Service Station at 600 Brundage Lane (Site), Bakersfield, i California. Also completed were the installation of one monitoring well for the additional groundwater investigation and offsite remediation wells for'the planned offsite remediation system. The enclosed report documents the work performed and the results. The status of on- i site Soil and groundwater remediation using· soil vapor extraction and air sparging is also , , included in this report. It is a pleasure to be of service to you, should you have any questions regarding this submittal, I do not hesitate to call either of the undersigned at 661 I ~ 7~ Mark W. Clardy, R.G. #7~5~ $".~',~L, J 'i ip Goalwin, R.G. #4779 I SeniorReg' ExpireSGeologist05/31/04~ . ~x~x~ Principal Hydrogeologist I CC: Mr. John Whiting, RiG. Mr. Howard Wines, R.G . Associate Engineering Geologist Hazardous Materials Division California Regional Water Quality Control Board City of Bakersfield Fire Department Central Valley Region 1715 Chester Avenue I 3614 Ashlan Avenue Bakersfield, CA 93304 Fresno, CA 93726 .I E2C REMEDIATION, LLC ENVIRONI~IENTAL/ ENGINEERING CONSULTANTS ,~' i ~t c ,' l g 7 0 5300 ~,Voodmere l)rivc,, Suite 105, IJakerst~eld, (]A 93313 'fd: (,r,l.S31.69t)0 Fax: 661.831.6234 '1;)11 Free: 800 339 .'i952 Corporate OJ"f~cc: 382 Martin Avenue, Sauta Clara, CA 95050 Tch ,i08.327.5700 Fax: .i08.327.5707 F, ma;l: E2C.Ren]cdiation. LLC@"'sbcgh)bal.nct Project Number 1801BK03 Seotember 30. 2002~ TABLE OF CONTENTS TABLE OF CONTENTS i LIST OF FIGURES ............................................................................... ~ ................... ................... ii LIST OF TABLES .................................................................................................................. ii LIST OF APPENDICES ..... ~ ......................................................................................................... ii EXECUTIVE SUMMARY ...................................................... ; ........ : ...... ; ...................................... 1 ConcluSions ....... : ...................................... ..................................... J ......... . ......... ................... 1 Recommendations ............... i ............ :.' .......................................................................... ~.i .... 2 1.0 INTRODUCTION ~ i 3 1.1 Site Description .................. : ........... ; .............................................................................. 3 1.2 Regional and Site Geology and Hydrogeology ............................................................... 3 1.2.1 Regional Geology ......... :..: ..................................... i .......................... , .............. 3 1.2.2 RegionaI Hydrogeology ......................................................... ................................. 4 1.2.3 Site Specific Subsurface Stratigraphy and Hydrogeology 4 2.0 ADDITIONAL GROUNDWATER CHARACTERIZATION REPORT OF FINDINGS ............ 5 2.1 Drilling and Soil Sampling ..................................................................................... ~ ........ 5 2.2 Monitoring Well Installation ................................ ' ............................................................ 6 2.3 Soil Analytical Results ........................................................... ~ .............................. r ........ 6 2.4 Third Quarter2002 Groundwater Monitoring ......... , ................. ~ .... ~ .................................. 6 2.4.1 Groundwater Elevations ......................................................................................... 6 2.4.2 Monitoring Well Purging and Sampling ...... ............................................................. 7 2.4.3 Groundwater Analytical Results .............................................................................. 7 3.0 IMPLEMENTATION OF OFFSlTE IRAP ...................................................... ..................... 8 3.1 Drilling and Soil Sampling .............................................................................................. 8 3.2 Installation of SVE Wells VE-6 through VE-9 ................................................................. 8 3.3 Installation of Wells AS-4 through AS-8 ..................................................... .................... 9 3.4 Soil Analytical Results ................................................................................................... 9 4.0 ONSITE REMEDIATION STATUS REPORT ................................................. ; ................... 9 4.1 Remediation System Startup ......................................................................................... 9 4.1.1 Remediation System Equipment ............................................ .' ................... ,. ........ .. 10 4.1.2 Regulatory Compliance ......... ................. ........................... ....' ......................... 10 4.2 Ongoing System Operations. ....................................................................................... 10 5.0 DISCUSSION OF REMEDIAL EFFICIENCY ................................................................... 11 6.0 CONCLUSIONS AND RECOMMENDATIONS ' ' 11 6.1 Conclusions ' 11 6.2 Recommendations ...................................................................................................... 13 I EzC Remediation, LLC i I Prqiect Number 180 IBKO$ Seotember $0. 2002 I 7.0 LIMITATIONS'AND REPORT CERTIFICATION .....................................i ........................ 13 8.0 REFERENCES ............................................................................ ................................... 14 I LIST OF FIGURES I Figure 1 Site Location MaP Figure 2 Site Plan i Figure 3 Third Quarter 2002 Groundwater Gradient PIct Figure 4 Third Quarter 2002 Benzene Isoc°ncentration PIct Figure 5 Third Quarter 2002 TPHg Isoconcentration PIct I LIST OF TABLES Table 1 Third Quarter 2002 Groundwater Monitoring Data I Table 2 Historical Groundwater Elevation Data Table 3 Historical Groundwater AnalYtical Results I Table 4 Summary of VES Monitoring Data Table 5 Mass of Hydrocarbons Removed by VES (based on influent concentrations) Table 6 Mass of Hydrocarbons Removed by VES (based on %LEL) I Table 7 Summary of Soil Analytical Data LIST OF APPENDICES I Appendix A Third Quarter 2002 Groundwater Purge Data Sheets Appendix B .Third Quarter 2002 Groundwater Analytical Laboratory Report I Appendix C BOring Logs with Well Construction Details I I E~C Remediation, LLC ii Project Number 1801BK03 September 30. 2002 'EXECUTIVE SUMMARY This report contains the results of the Third Quarter 2002 groundwater monitoring event, the additional 'groundwater characterization report of findings, and onsite soil and groundwater .remediation progress for the Mr. Fast Service Station at 600 Brundage Lane (Site), Bakersfield, California. This report is presented to comply with the directive of the California Regional Water Quality Control Board - Central Valley Region (RWQCB) dated SePtember 21, 2001. This report presents the results of the work activities and includes analytical data, groundwater elevation 'data, and interpretations of current groundwater quality and flow direction beneath the Site and the immediate vicinity, This report also includes a description of Offsite soil vapor .extraction and air sparge wells installed as part of the offsite remediation system. Conclusions Based on the data'presented in this report; E=C makes the following conclusions: · Groundwater elevations onsite increased an average of 1.27 feet relative to the Second Quarter 2002 and increased an average of 4.80 feet offsite. At well MW- 17S along Fig Street the groundwater elevation increased by approximately 16 feet and dropped by more than 3 feet at well MW-15S as the well was dry (MW- 15S contained a 3-foot column of water the previous quarter); · The average groundwater gradient from the Site to Fig. Street was calculated at 0.068 ft/ft with flow in a south-southeasterly direction in the Third Quarter 2002; in the Second Quarter 2002 the average groundwater gradient was also 0.068 ft/ft, with flow to the southeast; · Wells MW-15D, MW-16, and MW-17D were found to be dry, suggesting that groundwater flow along Fig Street is laterally discontinuous. As well MW-15S went from dry in the First Quarter 2002 to containing more than 3 feet of water in the Second Quarter 2002 to dry again in the ·Third Quarter 2002, the direction of groundWater flow in this area appears to be changing over time..Note: In April and May 2002, it was observed that the unlined canal west of the Site was dredged. This could have resulted in removal of settled fines thus propagating increased percolation of water from the canal into the subsurface. This action may have cont'ributed to the increase in water table elevation that was evident in August 2002 during the monitoring event; · Free-product measuring 3 feet thick at well MW-13 in the Second Quarter 2002 Was not present in any wells in the Third Quarter 2002; · Significant concentrations of TPHg and/or BTEX were rePorted in the water samples from wells MW-l, MW-7, MW-8, MW-11R, and MW-12 through MW-14; however, benzene was reported as non-detect at MW-l, MW-7, and MW-8; · Benzene Concentrations at onsite wells MW-2 through MW-5 have decreased significantly, an indication that the combined vapor extraCtion/air sparging is effectively reducing benzene levels; · The total hydrocarbon concentration in groundwater at wells MW-l, MW-7, MW- 8, MW-I-IR, MW-12, and MW-13 suggests that free-product may be present in those areas~ Free Product Was found in well MW-13 in the Second Quarter 2002; E2C Remediation, LLC · - 1 Pro_iect Number 1801BK03 Seotember 30. 2002 · Total petroleum hydrocarbons as gasoline were reportedly non-detect in the groundwater sample from downgradient monitoring well MW-17S for the second consecutive quarter; non-detect 'at MW-15S, a significant decrease from a TPHg was reported as concentration of 10,000 ~g/L in the Second Quarter 2002. Benzene was also reported as non-deteCt, a decrease from 25' ~g/L the previous quarter; · The conCentration of benzene was reportedly greatest (36 '~g/L) at new downgradient well MW-18' screened in a deeper water-bearing zone than nearby wells MW15S and MW-15D, however, TPHg was non-detect at this well; · Remediation (SVE and groundwater air sparge)at the Site began in April 2002, The remediation affects only the on-site portions of the groundwater contaminant plume. Significant decreases in concentrations for groundwater .samples collected from monitoring wells located on-site were observed (MW-1 and MW~4). from the First to the Second Quarter 2002; however, increasing cOncentrations at onsite wells in the Third Quarter 2002 may be the result of rising groundwater levels coming into contact with hydrocarbon-impacted soils; · Influent concentrations to the remediation system declined rapidly after start up indicating a "groundwater-only" contaminant plume. Cycling of the system resulted in a greater than 5-fold increase in hydrocarbon removal rate; and · The remediation system has removed approximately 2,000 to 2,500 pounds of hydrocarbons from the groundwater and soil plumes from start up in April 2002 through September 2002. Recommendations Based on the data presented above and the conclusions, E2C makes the following recOmmendations: · Complete installation of offsite remediation system including trenching, plumbing, manifolding and utility hookups; · Obtain VE/AS remedial equipment and operate off-site remedial system; · Continue operations and maintenance of the on-site remedial system; and · Perform quarterly groundwater monitoring and sampling and rePorting for the duration of remedial operations plus a minimum of four quarters beyond system shut-down of both the on-site and off-site remedial operations. Note: An Authority to Construct permit application Will be' submitted to the San Joaquin Valley Unified Valley Air Pollution Control DistriCt in October 2002 for the off-site remedial equipment. ' The January 28, 2002 RWQCB letter approved suspending analysis of groundwater samples for MtBE until verification monitoring is performed prior to site closure. The RWQCB issued a subsequent letter dated May 13, 2002 in review of the First Quarter 2002 Groundwater Monitoring RepOrt. Due to the detection of TBA in one sample in the First Quarter 2002, the RWQCB requested that analysis for the five oxygenates, including MtBE, be continued for at least two additiOnal quarters (through the Third Quarter 2002). E2C Remediation, LLC 2 Project Number 1801BK05 $~)tember 30. 2002 1.0 INTRODUCTION This report contains the results of the Third Quarter 2002 groUndwater monitoring event, additional .groundwater investigation, and onsite remediation status for the Mr. Fast Service StatiOn at' 600 Brundage Lane (Site), Bakersfield, California. This report is presented to comply with the directive'of the California Regional Water Quality Control Board - Central Valley Region (RWQCB) dated September 21, 2001. This report presents the results of the work activities described above and includes soil and groundwater analytical data,, groundwater elevation data, and interpretations of current groundwater quality and flow direction beneath the Site and immediate vicinity. 'The report also includes an extensive review of the project history and a section on geology and hYdrogeology. 1.1 Site Description The' Site 'is located at 600 Brundage Lane in Bakersfield, California (see Figure 1 for Site location, map). The Site'is located in the SW 1/4 of SE 1/4, Sec. 31, T29S, R28E, Diablo Base and Meridian. The present property consists of a rectangular-shaped lot containing one building located in the Northeast corner (see Figure 2 fOr Site Plan). The building is currently occupied bya small retail business,. Mr. Fast Gas & Liquors. Attached to the west side of the building is a fenced in Storage area. Old dispenser islands and new dispenser islands are located along the south edge of the .building. The property is bordered along its northern side by Ist Street, along its eastern side by T Street (on' the South side of Brundage T Street becomes Berneta Avenue), along its sOuthern side by Brundage Lane, and along its western side by the Kern Island Canal - Central Branch. Residential areas, interspersed with light commercial/industrial areas, are located adjacent to the Site. Vista High School is located just North of the Site. Highway 58, an East-West trending four-lane divided freeway is located approximately 450 feet south of the Site. 1.2 Regional and Site Geology and Hydrogeology 1.2.1 Regional Geology The property is located in the South central area of the San Joaquin Valley where the Sierra Nevada, Great Valley, and Coastal Range physiographic Provinces meet. The southern end of the Sierra Nevada Province is comPOsed of a igneous massive block of and metamorphic rock of Mesozoic age and older. This Sierran block, 40 to 100 miles wide and 400 miles long, slopes five to seven degrees beneath the San Joaquin Valley. The Coastal Range province .on the deformed and fractured marine and non-marine sedimentary rocks west consists of tectonically of Jurassic, Cretaceous, and Tertiary age, which dip eastward beneath the Sand Joaquin Valley. The Great Valley province is a broad asymmetrical synclinal trough, which is known as in the north and the San Joaquin Valley in the south. the Sacramento Valley Beneath the s°uthern San Joaquin Valley flo°r, the Sierran plutonic and metamorphic rock block is overlain by consolidated marine rocks of Jurassic and Cretaceous age. These rocks are overlain by continental marine and non-marine sedimentary roCks of Tertiary age, which are comprised of continental deposits of consolidated to semi-consolidated, fossiliferous sandstone, and shale which thicken toward the south and West. The Tertiary rocks, .in turn, are siltstone, overlain by unconsolidated 'continental deposits, which consist of Pliocene to Holocene river and lake sediments comprised of gravels, sands, silts, and clays. I E~C Remediation, LLC 'J Project Number 1801BK03 Seotember 30. 2002 Surface features of the flOor of the San Joaquin Valley consist of dissected uplands, alluvial fans, overflow areas, and lake bottoms. Dissected uplands lie between the mountains and the flat Valley floor and are manifest in IOw-lying hills through which perennial and nearly intermittent streams flow. These features consist of reworked older alluvium. The alluvial fans are the sites of active stream deposition of sand and silts derived from the sierra Nevada and the dissected uplands. The overflow lands and lake bottoms lie in the central part of the Valley where silt and clay accumulate in quiet lake and marsh environments. 1.2.2 Regional Hydrogeology The Central Valley of California is underlain by a broad; thick hYdrogeologic Unit, which consists of soil and rock of varying porosity and permeability. Physical dimensions are approximatelY 50 miles wide at the widest point in the Valley, 400 miles long,, and as much as 2,000 feet deep. Recharge to regional aquifers consists of infiltration of seasonal precipitation and percolatiOn of surface waters. The Valley aquifer of greatest storage, highest quality, and greatest storage, highest quality, and greatest accessibility for domestic and agricultural use consists of the alluvial and lacustrine continental deposits extending to the depths of 1,5000 to 2,000 feet beneath the San Joaquin Valley floor. Lithologic'and hydraulic properties of these sediments are largely the product of the sediment source and the depositional environment. These sediments range in size from clays to boulders and include all mixtures between the extremes. Those of the west side of the Valley are derived .largely from the Coastal Ranges, which tend to consist of shales and fine sandstones with limited permeability. The east sediments are derived mainly from granitic materials of the Sierra Nevada which are generally coarser and much more permeable. Sediments encountered during the .boring procedures at the Mr. Fast and adjoining parcels consisted of alluvial deposits comprised of fine-to-coarse grained sands containing quartzite and micas. Permeability in these sediments is high. Regionally, the depth to groundwater ranges between 150 and 200 feet below grade, according to the 1995 Water Supply Report published by the Kern County Water Agency in January 1998. Unconfined groundwater beneath the subject property is significantly shallower than the regional depth, presumably because of the position adjacent to the unlined Kern Island Canal - Central Branch. In general the hydraulic gradient in the area is towards the northwest. Measurements made within shallow onsite and offsite wells over the course of this project have shown that the gradient in the unconfined aquifer beneath the Site has been consistently towards the southeast, away from the unlined Canal. 1.2.3 Site Specific Subsurface Stratigraphy and Hydrogeology In general, the subsurface at the Site is characterized by approximately 5 feet of silty sand at the surface followed by sand to approximately bgs. Silty clays, 50 to 55 feet clayey silts, sandy silts, and finer-grained silty sands occur from that depth to approximately 80 feet bgs. In for wells MW-10), first groundwater was encountered at approximately previous borings (e.g., 47 feet bgs. At the boring for Well MW-11FI, first groundwater was enCountered between 46.5 and 50 feet bgs. At well MW-12, first groundwaterwas not encountered until 56.5 to 60 feet'bgs E2C Remediation, LLC' 4 Project Number 1801BK03 September 30. 2002 On-site, speCifically at wells MW-1 through MW,8, groundwater' elevations increased an average of. approximately 2 feet from June to August 2001. In the off-site area of wells MW-7, MW-9, and MW-10 groundwater elevations also increased, an average of approximately 1.7 feet. At wells. MW-11R and MW-13, groundwater elevations' increased significantly, approximately 7 feet each at wells MW-11R and MW-13. MW-11R is located approximately 90 feet south of MW-10 and MW-13 is located approximately 100 feet southeast of MW-11R in the general downgradient direction. This data indicates that a very steep groundwater gradient exists between MW-10 and MW-11R with the gradient flattening out' somewhat in the area of MW-11R to MW-13. This is evident as depicted on Figure 3, the groundwater gradient plot for August 2001. A review of the boring logs for the Site revealed the cause for this change in gradient. In the area from wells MW-1 and MW-2 to the area of well MW-10, the top of the groundWater table occurs above the silty layer, which is generally encountered at approximately 50 feet bgs. This suggests that principal groundwater movement 'occurs on top of the silty layer within the coarser-grained materials as flow from the recharge point along the canal until it reaches the area of well MW-10. Upon reaching the area of well MW-lO, groundwater then matriculates down into the silty layer, which has a lower hydraulic conductivity than the coarser materials lying above (i.e., takes longer for the groundwater to move through the finer grained flow medium). This transfer from flow in coarser materials to flow in finer-grained materials creates a steeper gradient. As expected, groundwater elevations downgradient of the change in flow medium materials are much deeper than those upgradient of this change and that area downgradient can experience a wide fluctuation in levels due to 'even minor recharge or discharge effects. 2,0 ADDITIONAL GROUNDWATER CHARACTERIZATION REPORT OF FINDINGS Additi°nal characterization was performed in July and August 2002 and consisted groundwater of the installation, development, and sampling of monitoring .well MW-18 on Fig Street near .the intersection with Berneta Avenue (Figure 2). The well was installed to evaluate deeper perched groundwater at the south edge of Fig Street in accordance with .the RWQCB letter request dated January 24, 2002 and as subsequently described in E2C's Workplan dated July 8, 2002. The Workplan was approved with the condition that geophysical logging to identify water-bearing zones would not be performed. The well was initially sampled in August 2002 in conjunction with the Third Quarter 2002 groundwater sampling event. 2.1 Drilling and Soil Sampling Well MW-18 was drilled and installed by Consolidated Testing Laboratories, Inc. (CTL) of Porterville, California on July 17, 2002. Drilling was accomplished with truck-mounted Mobile Drill B-80 drill rig using 8-inch-diameter hollow-stem auger equipment. Soil samples were collected at 5-foot depth intervals beginning at 45 feet bgs using .a California modified sampler lined with brass sleeves. Intermediate samples were also Collected at depths of 92.5 feet, 107.5 feet, and 116.5 feet bgs. Groundwater was initially encountered at 53 feet bgs. The boring was completed at a depth'of 120 feet bgs. The boring log with well completion detailS is presented in Appendix C. E2C Remediation, LLC ~ Project Number 1801BK03 SeDtember 30. 2002 2.2 Monitoring . Well Installation The boring for MW-18' was converted into a groundwater monitoring well following the completion of drilling. Two-inch-diameter Schedule 40 PVC casing consisting of 25 feet of 0.020-inCh slotted casing followed by blank casing above were installed. Sand.pack (No. 3) was emplaced from 93 feet to 120 feet bgs with hydrated bentonite chiPs from 78 feet to 93 feet bgs. Cement grout backfill was installed from ground surface to 78 feet bgs. The well was developed by CTL in July 2002 using a combination of swabbing, bailing, and Iow-flow pumping. 2.3 Soil Analytical Results The soil samples collected during drilling were transported to Halcyon Laboratories, Inc. of Bakersfield, CalifOrnia in a chilled cooler at 4.degrees Centigrade. Eight (8) selected samples collected between depths of 90 feet and 119 feet bgs were analyzed for Total Petroleum Hydrocarbons as.gasoline (TPHg) using EPA Method 8015 Modified; Benzene, Toluene,. Ethylbenzene, and total XYlenes (BTEX) using EPA Method 8260b; and Methyl tertiary-Butyl Ether (MtBE) using EPA Method 8260B. The analytical results are presented in Table 7 and the laboratory report is located in Appendix D. The data are summarized as followS: · TPHg was repOrted in only one sample, MW18-117, at a concentration of 012 milligram per kilogram (mg/kg); and ° BTEX and MtBE were reportedlY/ not detected in any of the analyzed soil samples. These data indicate that soil contaminatiOn in the deeper water-bearing zone near MW-18 is not prevalent and that the'detected contamination is likely a result of groundwater transport. 2.4 Third Quarter 2002 Groundwater Monitoring From August 21-22, 2002, E2C personnel conducted Third Quarter 2002 groundwater monitoring activities, which included measuring depths to groundwater, checking wells for free- product, purging wells, and collecting groundwater samples. Well 'MW-18, installed in July 2002, was initially sampled in August 2002 in conjunction with the Third Quarter 2002 sampling event. 2.4.1 Groundwater Elevations Prior to purging and sampling, the depth to groundwater was measured at all wells using a Solinst water level meter. Depth to groundwater at each monitoring well was measured below the toP of casing (B'FOC) at the north side of the casing to the nearest 0.01-foot (see Table 1 for summary of depths; Table 2 contains a summary of historical measurements). Based on the previous data regarding the Site, measurements were taken at the wells in order of least impacted location to most impacted location. In addition, each well .was checked for free- product using a Yellowjacket oil-water interface probe. The interface probe and Solinst water level indicator were washed in an Alconox solution and rinsed with clean water prior to each use and between each well. Groundwater elevations were then calculated bY subtracting the measured depths from the surveyed elevation. Groundwater elevations for this sampling round are summarized in Table 1 and with previously collected elevation data for the Site in Table 2. Based on the depth to groundwater measurements, groundwater flow is to the South-southeast at a-steep average E~C Remediation, LLC Project Number 1801BKO$ September $0. 2002 gradient of 0.068 ft/ft from the site to Fig Street (onsite gradient of 0.014 ft/ft and offsite gradient of 0.084 ft/ft) (Figure 3). Onsite groundwater elevations increased an average of 1.27 feet since the, Second 'Quarter 2002. This is likely in response to ongoing air sparging of the groundwater artificially causing the water table to rise and/or recharge from the unlined canal west of the Site. Offsite groundwater elevations increased an average of 4.80 feet since the previous quarter, probably the result of recharge from the canal. The water.table in the offsite area could also be influenced by the transition in soil lithology in the water-bearing zone between wells MW-12 and MW-13. The lithology of the water-bearing soils between these two wells .changes from poorly graded sand at 'MW-12 to interbedded silts, clays, and Sands at well MW-13. As groundwater migrates from more permeable sand at MW-12 to less permeable sediments at MW-13, the gradient becomes more steep and groundwater apparently mounds near MW-11R and MW-13 as it encounters more resistance to flow in the finer grained soils. This is particularly evident at well MW-13 where the groundwater elevatiOn increased 11.05 feet since the Second Quarter 2002. 2.4.2 Monitoring Well Purging and Sampling All monitoring wells were purged in order to obtain representative groundwater samples. A minimum of three well casing volumes of groundwater were removed from each well prior to sampling utilizing a battery-powered submersible A casing volume is calculated by pump. multiplying the height of the freestanding water column in the well by the cross-sectional area of the well casing. During purging, groundwater parameters of temperature, pH and conductivity were measured as water was pumped from the wells to verify sufficient purging and stable physical parameter measurements on field instruments (see Appendix A for groundwater purge data sheets). The pump was decontaminated in a solution of Alconox and water and rinsed with clean' water before each use. After purging, the wells were sampled using new disposable bailers'. A groundwater sample from each well Was decanted into four 40-mi volatile organic analysis (VOA) vials. 'Care was taken to prevent headspace or bubbles in the vials, which were sealed with Teflon-lined lids. Samples were labeled and placed in an iced cooler maintained at 4 degrees Centigrade, accompanied with a Chain-of-Custody document for transport to the analytical laboratory. 2.4.3 Groundwater Analytical Results Halcyon Laboratories, Inc. (Certification #1920) of Bakersfield, California analyzed the groundwater samples for TPHg using EPA Method 8015M, BTEX using EPA Method 8260b, and fuel oxygenate compounds of Diisopropyl Ether (DIPE), Ethyl Tertiary Butyl Ether (ETBE), Methyl tertiary Butyl Ether (MtBE), Tertiary Amyl Methyl (TAME), Tertiary Butyl Ether and Alcohol (TBA) using EPA Method 8260b. Appendix B presents the analytical laboratory report. results for the Third Quarter 2002 are summarized in Table I and .along Laboratory analytical With historical data in Table 3. Well MW-13 that contained 3.00 feet of free-product in the Second Quarter 2002 did not contain freerproduct,this quarter and therefore a groundwater: collected from the well. The results of the groundwater chemical analyses are sample was summarized follOwing: I E2C Remediation, LLC 7 Project Number 1801BK03 September 30. 2002 · Significant concentrations of and/oi' BTEX were in the water TPHg reported samples from wells MW-l, MW-7, MW-8, MW-11R, and MW-12 through MW-14; however, benzene was reported as non-detect at MW-l, MW-7, and MW-8; · Benzene was reported at 'concentrations ranging from non-detect (<0.5 tzg/L) (MW-4) to 36 Izg/L (deep well MW-18) (see Figure 4 for benzene isoconcentration plot for distribution); and ' · Toluene, ethylbenzene, and total xylenes were reported at concentrations ranging from 4.3 p,g/L (MW-4) to 33,280 pg/L (MW-11R), 0.7 pg/L (MW-6) to 3,940 ~g/L (MW-8), and 4.4 ~g/L (MW-4) to 16,870 l~g/L (MW-8), resPectively; .· TPHg was reported in all samples, except MW-15S, MW-17S, and MW-18, at concentrations ranging from 50 Izg/L (MW-9 and MW-10) to 137,000 ~g/L (MW- 13) (see Figure 5 for TPHg isoconcentration plot for distribution); and · Fuel oxygenate compounds of MtBE, DIPE, ETBE, TAME, and TBA were not detected in of the groundwater samples. any 3.0 IMPLEMENTATION OF OFFSlTE IRAP Fieldwork fOr implementation 'of the offsite Interim Remedial Action Plan (IRAP) began 'in July 2002 with the drilling and installation of soil vapor extraction (SVE) and air sparge (AS) wells south of Brundage Lane. A total of four (4) SVE Wells (VE-6 through VE9) and five (5) AS wells (AS-4 through AS-8) were installed offsite. Remaining items fOr IRAP implementation include trenching and piping installations, construction of a concrete equipment pad, obtaining electrical service, installation of the catalytic oxidizer, air compressor and associated devices, and remediation system startup testing. The RWQCB granted approval of the offsite IRAP by letter dated January 28, 2002. An encroachment permit was obtained from the City of Bakersfield for the installation of wells VE-8, VE-9, and AS-8 within city right;of-way along the west side of Berneta Avenue. 3.1 Drilling and Soil Sampling Drilling for wells VE-6 through VE-9 and AS-4 through AS-8 was performed by CTL from July 9- 16, 2002 using a truck-mounted Mobile Drill B-80 drill rig. Soil samples were. collected at 5-foot depth intervals during drilling and were field screened for organic vapors using a hydrogen flame ionization detector (FID). The borings for wells VE-6 and VE-7 were drilled to 39 feet bgs, to 43 feet bgs for well VE-8, and to 49 feet bgs for VE-9. The borings for Wells AS-4 through AS-7 were drilled t° 65 feet bgs and for AS-8 to 75 feet bgs. 3.2 Installation of SVE Wells VE-6 through VE-9 The SVE wells were constructed in such a manner that the slotted interval will remain above the water table throughout the year. The soil borings were advanced to 37 feet to 49 feet bgs at which point the wells were constructed (see boring logs in Appendix C). At VE-6 and VE-7, twenty-five feet (14 t° 39 feet bgs) of two-inch-diameter slotted (0.020") Schedule 40 PVC was placed at the bottom followed by blank PVC to the surface. At VE-8 and VE-9, ten feet of slotted PVC was'installed followed by blank PVC casing to the surface. Graded sand (#3) was placed to a point two to three feet above the top of the slotted section followed by a two to three- foot thick hydrated bentonite seal follOwed by neat-cement grout to the near surface. A traffic- rated steel box set in concrete at the surface completed the installations. I E~C .Remediation, LLC 8 Project Number 1801BK03 Seotember 30. 2002 3.3 Installation of Wells AS-4 AS,8 through The AS wells were constructed such that the screened portion of the wells lies approximately 20 feet below the water table at the time of installation. After advancing the borings to the depths stated above in Section 3.1, a two-foot section of two-inch-diameter PVC microporous screen was installed at the bottom of the boring followed by blank PVC casing to the surface. Graded sand (#3) was placed to a point two to three feet above the top of the screen section followed by a three-foot thick hydrated bentonite seal followed by neat-cement grout to the near surface, A traffic-rated steel box Set in concrete at the surface completed the installations. 3.4 Soil Analytical Results The soil samples were transported to Halcyon Laboratories, Inc. in a cooler chilled t© 4 degrees Centigrade. A total of thirty-seven (37) selected soil samples were chemically analyzed for TPHg using EPA Method 8015 Modified, and BTEX and MtBE Using EPA Method 8260b. The analytical results are presented in Table 7 and the laboratory report is located in Appendix D. The data are summarized as follows: ·Benzene was detected in seven (7) samples at concentrations ranging from 0.1 mg/kg (AS8760) to 6.5 mg/kg (AS6-60); . · TPHg were detected in twenty-nine (29) samples at concentrations ranging from 0.1 mg/kg (AS5-5) to 1,217 mg/kg (AS6-60); · Detected toluene concentrations ranged from 0.1 mg/kg to 318.1 mg/kg, ethylbenzene from 0.3 mg/kg to 81.8 mg/kg, and total xylenes from 0.1 mg/kg to 215.6 mg/kg; and · MtBE was not detected in any of the analytical soil samples. The soil analytical data indicate that there is a significant offsite plume. Concentrations generally were greatest in the vicinity of wells AS-4, AS-6, and AS-7. The detections were made in samples that were collected at or below the capillary fringe suggesting that the plume is associated with groundwater transport and is limited to the saturated zone. The detections of contaminants below the current water table are interpreted as remnants of groundwater contamination at a Iow stand of groundwater. As groundwater rose, it created a "smear zone" that is currently submerged. 4.0 ONSITE REMEDIA TION STATUS REPORT 4.1 Remediation System Startup 'The on-site remedial system consists of soil vapor extraction and groundwater air sparging equipment. Operation of the on-site system commenced on April 4, 2002. Startup testing was performed on April 10, 2002 under the inspection of Mr. Bruce Muir-SJVUAPCD. The initial remediation progress report for the project was submitted in conjunction with the Second Quarter 2002 Groundwater Monitoring Report. Future reports will be provided on a quarterly basis. The following sections provide information on the status of the project through the current quarter. I E2C Remediation, LLC 9 Project Number ~801BK03 September 30. 2002 4.1.1 Remediation System Equipment The vapor extraction remediation system consists of a regenerative type vapor extraction blower to extract vapors from a network'of six wells. An electrically heated Solleco Model 250 ECAT thermal/catalytic oxidizer is connected to the system to reduce vapor emissions entering the atmosphere. The unit's minimum operating temperature is 600 degrees Fahrenheit (°F) in catalytic mode. This temperature is set to ensure vapor Oxidation at reasonable electrical cost. Furthermore, the unit has a catalytic module to complete the oxidation process. For improved reliability and safety, the valve controls, actuators, and components are controlled by relay logic. The Solleco 250 is equipped with automatic air dilution capability and a noise reduction muffler. The system has been modified with a 200-gallon capacity water 'knockout' pot to temporarily store water entrained in the vapor stream. This remediati°n equipment is designed to shut down and lock out in the event.of a system malfunction. The various safetY features include high and Iow oxidizer bed temperatures, high and Iow blower pressure, high intake lower explosive limit (LEL), high and Iow air pressure, high and Iow exhauSt temperature, and water knockout malfunction sensor. The system is equipped with a Zip-drive paperless recorder and instrumentation to continuously record the heat exchanger temperature, the combustion temperature, the catalytic outlet temperature, the system flow rate in standard cubic feet per minute, and the %LEL. 4.1.2 Regulatory Compliance E2C on behalf and under the supervision of the APCD Inspector collected samples of the influent and effluent vapor emissions on April 10, 2002. The samples were collected in Tedlar bags and transported to a certified laboratory under chain of custody protocol. The samples were submitted to'performance Analytical, Inc. of Simi Valley, California, a state certified laboratory. (DHS Certification No. 2380), and analyzed for Total Organic Gases using EPA Method TO-3. Based on the analytical results, the destruction efficiency is 96.1%. The daily VOC emissions rate is 7.12 pounds per day (lbs/day) based on the observed system flow rate and a conversion of effluent sample laboratory data to volumetric concentration and 6.74 lbs/day based on the flow rate FID measurement of the effluent vapor stream. Based on these data, the destruction efficiency was calculated to be 96.1%, a valUe that is in comp!lance with the minimum 95% destruction efficiency stated in the APCD permit conditions. 4.2 Ongoing System Operations E2C personnel periodically measure influent oxidizer Concentrations using an FID. A summary of operational data for the on-site system collected during E2C's periodic visits is provided in Table 4. The initial concentration as measured With the FID on April 4, 2002 was 950 parts per million volume (ppmv). After approximately one month of operation, the influent concentration decreased to.200 ppmv as measured with the FID. During this period, the influent concentration was mOnitored at different well field configurations to optimize vapor extraction. In May 2002, the influent concentration continued to drop falling to 30 ppmv. The vapOr extraction system Was shut down on May 14, 2002 to allow conditions to stabilize prior to groundwater monitoring and to begin cycling the system off and on to allow .for the accumulation of hydrocarbon vapors. Cycling of the system on a weekly basis appears to have nearly doubled the influent concentration during the intermittent weeks of operation (Table 4). E2C Remediation, LLC 10 Project Number 1801BKO$ SeDtember 30. 200~ the Third Quarter 2002, of cycled with approximately three During operation the system.was weeks of shUt down for each operational week. The system was operated during the weeks of July 1, July 8,' August 12, and September 17, 2002 and was shut down the intervening weeks during the Third Quarter 2002. GroundWater air sparging also began on April 4, 2002 utilizing wells AS-l, AS-2, and AS-3 to deliver air to the groundwater. Initial airflow at these wells varied from 0.25 to 4 scfm at operating pressures of 1.5 to 5.5 pounds per square inch (psi). Due to these Iow flow rates, the air compressor was upgraded on April.15, 2002 with an Ingersoll Rand Model SSR EP10 Rotary Screw. Air Compressor to increase the flow .rate. Since the Upgrade, flow rates have increased varying from 2 to 12 scfm at operating pressures of 2 to 9.5 psi. 5.0 DISCUSSION OF REMEDIAL EFFICIENCY Moderately high influent concentrations and high flow rates were observed at the onset of the remediation project. RaPid declines in the influent concentrations were observed after approximately 30 days of continuous operatiOn. Significani and rapid declines in influent concentration are indicative of "groundwater-only" contaminant plumes or can be caused by channeling in the vadose zone. Generally, when channeling is occurring an increase in flow rate and decrease in well field vacuum are observed. E2C field personnel carefully observed machine operational parameters and did not record significant flow increases or well field vacuum decreases; therefore, the significant decline in influent concentrations are likely a result a "groundwater-only" contaminant plume. In an effort to increase the hydrocarbon removal rate, E2C began cycling (one week on and one week off) the system to determine whether cycling would increase influent concentrations. The results clearly demonstrate that cycling increased influent concentrations. Prior to cycling on May 14, 2002, influent concentrations had dropped to 95 ppmv. After a one-week off cycle, influent concentrations were measured at 300 ppmv at restart. As cycling continued, the results' became even more dramatic. On June 11, 2002 influent concentrations were measured at 620 ppmv, an over 10-fold increase. Hydrocarbon removal rates are a function of influent concentration, flow rate, and run time. Flow rate remained nearly constant, run time was halved (due to cycling) and influent concentration increased by eleven (11) times; therefore, the net reSult is a 5.5 times increased removal rate over the same elapsed calendar time. As these results clearly demonstrate, cycling of the remediation system at this site produces significantly higher hydrocarbon removal rates.. Therefore, it is E2C's recommendation to continue cycling the system until cycling no longer produces desirable results. Due to continuing relatively Iow influent concentrations, cycling of the system on.a one week operational and three weeks non-operational basis has not resulted in decreased hydrocarbon removal rates. 6.0 CONCLUSIONS AND RECOMMENDATIONS 6.1 Conclusions Based on the data presented in this report, E2C makes the following conclusions: ° Groundwater elevations onsite increased an average of 1.27 feet to the relative Second Quarter 2002 and increased an average of 4.80 feet offsite. At well MW- 17S along Fig street the groundwater elevatiOn increaSed.by approximately 16 I E~C Remediation, LLC 11 I ' pr~_iectNumber 1801BK03 Seotember30. 2002 ; I feet and dropped by more than 3 feet at well MW-15S as the well was dry (MW- '15S contained a 3-foot column of water the previous quarter); · The average groundwater gradient from the Site to_Fig Street was calculated at .0.068 ft/ft with flow in a south-southeasterly direction in the Third Quarter 2002; in the Second Quarter 2002 the average groundwater gradient was also 0.068 fi/fi, with flow to the southeast; I · Wells MW-15D, MW-16, and MW-17D were found to be dry, suggesting that groundwater flow along Fig Street is laterally discontinuous. As well MW-15S went from dry in the First Quarter 2002 to containing more than 3 feet of water in the Second Quarter 2002 to dry again in the Third Quarter 2002, the direction of groundwater flow in this area appears to be changing over time. Note: In April i and May 2002, it was observed that the unlined canal west of the Site was dredged. This could have resulted in removal of settled fines thus propagating increased percolatiOn of Water from the canal into the subsurface. This action i may have contributed to the increase in water table elevation that was evident in August 2002 during the monitoring event; · Free-product measuring 3 feet thick at well MW-13 in the Second Quarter 2002 I was not present in any wells in the Third Quarter 2002; · Significant concentrations of TPHg and/or BTEX were reported in the water samples from wells MW-l, MW-7, MW-8, MW-11R, and MW-12 through MW-14; I however, benzene was reported as non-detect at MW-l, MW-7, and MW-8; · · Benzene concentrations at onsite wells MW-2 through MW-5 have decreased significantly, an indication that the combined vapor extraction/air sparging is I effectively reducing benzene levels; · The total hydrocarbon concentration in groundwater at wells MW-l, MW-7, MW- 8, MW-11R, MW-12, and MW-13 suggests' that free-product may be present in Ithose Free was found in well MW-13 in the Second Quarter 2002; areas. product · Total petroleum hydrocarbons as gasoline were reportedly non-detect in the i groundwater sample from downgradient monitoring well MW-17S for the second consecutive quarter; · TPHg was reported as non-detect at MW-15S, a significant decrease from a I concentration of 10,000 tzg/L in the Second Quarter 2002. Benzene was also rePorted as non-detect, a decrease frOm 25 I~g/L the previous quarter; · The concentration of benzene was reportedly greatest (36 ~g/L) at new I downgradient well MW-18 screened in a deeper water-bearing zone than nearby wells MW15S and MW-15D, however, TPHg was non-detect at this well; I · Remediation (SVE and groundwater air sparge) at the Site began in April 2002. The remediation affects only the on-site portions of the groundwater contaminant plume. Significant decreases in concentrations for groundwater samples. I collected from monitoring wells located on-site were observed (MW-1 and MW-4) from the First to the Second Quarter 2002; however, increasing concentrations at onsite wells in the Third Quarter 2002 may.be the result of rising groundwater i levels coming into contact with hydrocarbon-impacted soils; · Influent concentrations to the remediation system declined rapidly after start up indicating a "groundwater-only" contaminant plume. Cycling of.the system I resulted in a greater than 5'-fold increase in hydrocarbon removal rate; and I E2C Remediation, LLC 12 Project Number 1801BK03 $¢otember 30. 2002 · · The remediation system has remOved approximately 2,000 to 2,500 pounds of hydrocarbons from the groundwater and soil plumes from start up in April 2002 through September 2002. 6.2 Recommendations ' Based on the data presented above and the conclusions, E2C makes the following recOmmendations: . · Complete insta ation of offsite remediation sYstem including trenching, plumbing, manifolding and utility hookups; . · Obtain VE/AS remedial equipment and operate off-site remedial system; · Continue operations and maintenance of the on-site remedial system; and · Perform quarterly groundwater monitoring and sampling and reporting for the · duration of remedial operations p us a minimum of four quarters beyond System shut-down of both the on-site and off-site remedial operations· ' Note: An Authority to Construct permit application will be submitted to the San' Joaquin Valley Unified Valley Air Pollution Control District in October 2002 for the off-site remedial equipment. The January 28, 2002 RWQCB letter approved suspending analysis of groundwater samples for MtBE until, verification monitoring is performed prior to site closure. The RWQCB issued a subsequent letter dated May 13, 2002 in review of the First Quarter 2002 Groundwater Monitoring Report. Due to the detection of TBA in one sample in the First Quarter 2002, the RWQCB requested that analysis for the five oxygenates; including MtBE, be continued for at least two additiOnal quarters (through the Third Quarter 2002). 7.0 LIMITATIONS AND REPORT CERTIFICATION E2C has prepared this Report in accordance with generally accepted standards of care existing n California at this time. It should be recognized that definition and evaluation of geologic conditions is a difficult and inexact science. Judgments leading to Conclusions and recommendations are generally made with limited knowledge of surfaCe conditions present. No warranty eXpressed or implied is made. Th s report has been prepared under the professional supervision of the registered professional whose seal and signature appear herein. The conclusions of this report are based solely on the Scope of Services outlined and the sources of information referenced in this report. Any additional information that becomes available concerning the Site shoUld be submitted to E2C so that our conclusions may be reviewed and modified, if necessary. This report Was prepared for the sole use of Mr. & Ki Mrs. Chu Yi and/or agent(s). Prepared By. ///¢- -~- ~ ~ Reviewed y: Y ¢~ ~ Pnnc~pal Hydrogeolog~st E2C Remediation,' LLC " Project Number 1801BK03 Seotember 30. 200? 8.0 REFERENCES (AEC, 2000a) Advanced Environmental Concepts, Inc., February 2000, Continuing Soil and. Groundwater Assessment Report at Mr. Fast Gas & Liquors, 600 Brundage Lane, County of Kern, Bakersfield, California (AEC, 2000b) Advanced Environmental Concepts, Inc., July 2000, Continuing Soil and Groundwater Assessment Report at Mr. 'Fast Gas & Liquors, 600 Brundage Lane, County of Kern, Bakersfield, California (E2C, 2001) E2C, Inc., July 26, 2001, Request for Approval of Off-Site Remediation & Request for Approval to Install Additional Groundwater Monitoring Wells, Underground Storage Tank Release, Mr. Fast Service Station, 600 Brundage Lane, Bakersfield, Cafifornia (E2C, 2001 a) E2C Remediation, LLC, August 15, 2001, Report of Findings for Additional Site. Characterization & SVE/AS Pilot.Testing, Second Quarter Groundwater Monitoring Report, Revised Remedial Action Plan (includes Workplan for Additional Groundwater Characterization), Mr. Fast Service Station, 600 Brundage Lane, Bakersfield, California (E2C, 2001b) E2C Remediation, LLC, October 15, 2001, Third Quarter 2001 Groundwater Monitoring Report, Mr. Fast Service Station, 600 Brundage Lane, Bakersfield, California (E2C, 2002) .E2C Remediation, LLC, January 11, 2002, Fourth' Quarter 2001 Groundwater Monitoring Report and Additional Groundwater Characterization Report of Findings, Mr. Fast S~rvice Station, 600 Brundage Lane, Bakersfield, California (Grisanti, 1992) Grisanti & Associates, Inc., February 1992, Transaction Environmental Site Assessment, Mr. Fast #6 Liquor and Deli Facility, 600 Brundage Lane, County of Kern, Bakersfield, California (RWQCB, 2000a) California Regional Water Quality Control Board - Central'Valley Region, 17 November 2000, Underground. Storage Tank Release, Mr. Fast Service Station, 600 Brundage Lane, Bakersfield, California (RWQCB Case No. 5T15000619) (RWQCB, 2000b) California Regional Water Quality Control Board - Central Valley Region, 29 November 2000, Underground Storage Tank Release, Mr. Fast Service Station, 600 Brundage Lane, Bakersfield; California (RWQCB Case No. 5T15000619) (RWQCB, 2001) CalifOrnia Regional Water Quality Control Board - Central Valley Region, 16 January 2001, UndergroUnd Storage Tank Release, Mr. Fast Service Station, 600 Brundage Lane, Bakersfield, California (RWQCB Case No. 5T15000619) i ~1 E2C Remediation, LLC 14 Project Number 1801BK03 Sef)tember 30. 2002 (RWQCB, c) Regional Quality - Valley Region, 2001 California Water Control Board Central 26 February 2001, Underground Storage Tank Release, Mr. Fast Service Station, 600 Brundage Lane, Bakersfield, California (RWQCB Case No. 5T15000619) (RWQCB, 2001d) California Regional Water Quality Control Board - Central Valley Region, 20 April 2001, Underground Storage Tank Release, Mr. Fast Service Station, 600 Brundage Lane, BakerSfield, California (RWQCB Case No. 5T15000619) (RWQCB, 2001e) California Regional Water Quality Control Board.- Central Valley RegiOn, 21 September 2001, Underground Storage Tank Release, 'Mr. Fast Service Station, 600 Brundage Lane, Bakersfield, California (RWQCB Case No..5T15000619), Review of "Request for Approval of Off-Site Remediation and ReqUest for Approval to Install Additional Groundwater Monitoring Wells" (RWQCB, 2002) California Regional Water Quality Control BOard - Central Valley Region, 24 January 2002, Underground Storage Tank Release, Mr. Fast Service Station, 600 Brundage Lane, Bakersfield, California (RWQCB Case No. 5T15000619) (WEECO, 1993) Western Environmental Engineers Company, July 1993, Site Assessment Report, Mr. Fast Service Station, 600 Brundage Lane, Bakersfield, California I E~C Remediation, LLC 15 Prqi. ect Number 1801BK03 Se~)tember 30. 2002 FIGURES Figure 1 Site Location Map Figure 2 Site Plan Figure 3 Third Quarter 2002 Groundwater Gradient Plot Figure 4 Third Quarter 2002 Benzene Isoconcentration Plot Figure 5 Third Quarter 2002 TPHg Isoconcentration Plot E~C Remediation, LL C Figures ! ; LEGEND I -~ Monitoring Well Location Shallow Monitoring Well Location I '~' Deep Monitoring Well Location Abandoned Well Location APN: 011-031-05 , Vapor Extraction Well Location -I "T" StreetII! [] Air Sparge Well Location I-- 'iBM Benchmark UJ I MW-2 I 'VE-1 ~' AS-1 V.E-4 ~'-~ MW_~_~ o, ~...,~.., I I APN: 011-032-16 -I MW.6 MW)_3 IV{W-1 o ----'(P"~-'* MW.5 T~ . Brundage Lane ~ -~- ~w-8 . j 92ft West; 22ff South I BRUNDAGE LANE I MW-9 AS-4 MW-10 ~ D+uw-7 AS-5 ~'VE-6 I ! , S AS-6 [] ,; AS-7 I ' [] z MW-11 0~,.048.1~ VE-8~ M+W.~ 0t1-04,-0~ 0,1-04~-0~ ' 011-041-11 AS-8 VE-9 ~, 011-048-10 011-048-09 011-048-08 ~ 011-041-12 ~ ~IG STREET UW-~ 0' ~ 80 MW-18 ' ] FREEWAY RIGHT-OF-WAY . ~ 40 SCALE: I inch = 80 feet ~ E2C ~e~e~¢¢o~, [[C MR. FAST SERVICE STATION 600 BRUNDAGE LANE FIGURE 5300 Woodmere Dr., Suite 105 BAKERSFIELD, CA. ~ Bakersfield, California 93313 2 Telephone: (661) 831-6906 Facsimile: (661)831-6234 SITE PLAN '1 APN: 0t 1-03i-05 SCALE: 1 inch = 80 feet . "T" Street Curre., O,*s Brundage Lane °1 Pumps MW-1 ~ o · ~ ............. 353 O0 ~ MW-5 · 1352.00 ~M Elevalion +39641 from MW-6 92ft West; 22ft SoLdh BRUNDAGE 351.00 MW-7 MW-10 3~0'00 °'~'°4f'°' o,,-o4,-o2 MW-12 340.00 LEGEND Monitoring Well Location Sha!low Monitoring Well Location t Deep Monitoring Well Location MW-17s MW-17d Abandoned Well Location FI G STR F_~~' MW- 1 6 ~' Vapor Extraction Well Location Benchmark FREEWAYI 321.49RiGHT.OF_WAY ~oo~ Groundwater Elevation Contour ~=' (FT MSL) ~ Groundwater Elevation (~T aSL) E2C ~en~e~,3t~o~, I',I'.C MR. FAST SERVICE STATION FIGURE 600 Brundage Lane 5300 Wo0dmere Dr., Suite 105 Bakersfield, California Bakersfield, California 93313 3 Telephone: (661) 831-6906 THIRD QUARTER 2002 Facsimile: (661) 831-6234 GROUNDWATER GRADIENT PLOT APN: 011-031-05 SCALE: 1 inch = 80 feet "T" Street ^..:o11_o32_16 VE-2~ 9ur¢:"~;}~s . Brundage Lane YE-4 YE-1 ~ MW-1 Monitodn~ Woll kocation Shallow Monitodn~ Woll kocation [ 01,-0,18-,0 ! 011-048-09 I 011-048-~ Deep Monitoring Well Location MW-15~ MW-17s MW-17d Abandoned Well Location FIG STREET ~~ vapor Extraction Well Location Benchmark FREEWAY RIGHT-OF-WAY Benzene Concentration in E2C Remediation, LLC MR. FAST SERVICE STATION FIGURE .600 Brundage Lane 5300 Woodmere Dr., Suite 105 Bakersfield, California Bakersfield, California 93313 4 Telephone: (661)831-6906 THIRD QUARTER 2002 Facsimile: (661)831-6234 BENZENE ISOCONCENTRATION PLOT APN: 011-031-05 SCALE: 1 inch = 80 feet I t~O "T" Street I MW-2 ~ + APN: 011-032-16 VE-2 ~f c ..... ,o,~s Brundage Lane MW-1 ~ VEo5 MW-8 Isoconcentration DM Elevation Contour in ug/L I 3RUNDAGE LANE ¢o I AS-4 MW-10 AS-6 ~ AS-7 MW-12 MW-11R VE-8 LEGEND Monitoring Well Location Shallow Monitoring Well Location Deep Monitoring Well Location MW-17d MW-lEd MW-17s MW-16 O 'Abandoned Well Location FIG STREET MW~-~++ MW-18 +. -(~"+ ¥ Vapor Extrac,on Well Loca,on BM Benchmark FREEWAY RIGHT-OF-WAY F~ TPHg Concentration in ug/L E2 C Remediation, LLC MR. FAST SERVICE STATION FIG U R E 600 Brundage Lane 5300 Woodmere Dr., Suite 105 Bakersfield, CalifOrnia Bakersfield, California 93313 5 Telephone: (661) 831-6906 THIRD QUARTER 2002 Facsimile: (661) 831-6234 TPHg ISOCONCENTRATION PLOT Prqiect Number 1801BK03 SeDtember 30. 2002 TABLES Table 1 Third Quarter 2002 Groundwater Monitoring Data Table 2 Summary of Historical Groundwater Elevation Data Table 3 Summary of Historical Groundwater Analytical Results Table 4 Summary of VES Monitoring Data Table 5 Mass of Hydrocarbons Removed by VES (based on influent concentrations) Table 6 Mass of Hydrocarbons Removed by VES (based on %LEL) Table 7 Summary of Soil Analytical Data E¢C Remediation, LLC Tables Project Number 1801BK04 September 30, 2002 TA~ILE 1 SUMMARY OF THIRD QUARTER 2002 GROUNDWATER MONITORING RESULTS Mr, Fast Service Station 600 Brundage Lane, Bakersfield, California August_.21-22, 2002 DEPTH TO F.P ICC GW B T E X TPHg TBA MtBE DIPE ETBE TAME WELL ID DATE WATER ELEV. ELEV. . ........................................................................................................................ · .............................................................................. (feet BTOC) (feet) (feet MSL) (feet MSL) #g/L MW.;!.. .8/21_/02 .. 40.._!_8_ .................. .3__.94._0.3 _3_53._8.5- ...... nd__<_0_..5_ .... 7_.0_0L'- _5_5_ ....... _3_85- ...... 4~2__0_0_0~ __n_d_<.2._5 . _nd<_O._5, ..... __n_d._<_o_._5 ...... .n_d<~0.5_ __n.d_~0._5__ MW-2 8/21/02 40.86 395.01 354.15 1.2 5.2 1.7 5.0 390 nd<2.5 nd<0.5 nd<0;5 nd<0.5 nd<0.5 MW-3_ ..... '8/21)°2 - . _4~3'.66-~._- i . ._'__ ~i_ ~: .394~6_4. ........ _3.5-.3_:9.8 .... _2_.5 ....... 9.5 ....... 2:.4_ ..... .7_:9 ......... 90___ __n_d_<_2:_5_ .... _n_d~.0_._5 n_d_<..o:.5__ __?__d_<_0.:5_ nd~0._5___ MW-4 8/21/02 .....40.82 ..... 394:_1_? ...... _35-_3.32_ ...... ! ........... 4~:~ ...... _1.1 .......... 4.~4_ ........ 250___ _ n.~2_._5 ..... n~ _<0.5- ..... nd<_0:5 ...... nd_<9_.._5._ ...... _n_d<_p.5 MW-5 8/21/02 ._4_1_:59 ............. 393.43 ...... _35_1..:8_4 ........ _1...7 ........ 6.9 ......... _2r.4- 6.5_ ........ _90. ......... n_d.~.5 _ nde0:.5 ...... _nd<_0:.5 .... n_d~0_..5_ ..... _n_.d_<_O._5._ M~-_6 .... _8!_21/_02 .... _39..3_0 ........... , ..393.7_6 ........ 3_5_4.:._4_6. ......... 1._9- __ .7_._6 ....... 0.7_ __ 5_.?_ ....... _6_0._ ..... _n~_<2.5- ...... :n_.d__<~._5-_..9~<0._5 .... _n_d.<_0.t5_ ..... ~n~<_0._5__ MW'7 ..... 8/21'!02. 42.20 ............ _~._93_:63 _3.5!~-_43__ :_nd_<0.5 ...... 8~10 ........ ~8!0_ ....... _5- 65-_0. ..... _9_4_,0_0_0_ .... n~d_<2.5__ ~_n~O-_5- ..M_W;8 .....8/2!.(02 .._ 41_.06 .... 3_93:_9_5 .... 352.~9 _ _n_d_.~r!._5- _3.~,6_7_0 .... __3 94_0... 1_6,87_0- .... _1_1___3,_0.~_0.___nd__<200 ...... n_._d_<_4_O_ ~d_<40 ....... n_d_<__40___ n_d_~_4__0__ MW-9 .... , 8/21(02- . 41.._6_1 .................. ;.39_4..05 ...... 3_5_2~4_4 ........ _1..:8 ..... 77_ ........ 2:8 ........ _9..._5- ...... ~50 '__ MW-10 8/21/02 42.53 392.91 350.38 1.1 4.9 1.7 4.5 50 . nd<2.5 nd<0.5 nd<0.5 . nd<0.5 nd<0.5 W~ell_t_a_k_e .n_o__u_t o_f s~e_rv_ic_e~- .B_e_._pl_a~_ed_by_MW-l~!..R_ t_!~e_n_c0nye_rt_e..d___in_!0ZE_wel MW-11R 8/21/02 43.02 391.33 348.31 nd<0.5 33,280 130 16 030 108 000 nd<200 nd<40 nd<40 nd<40 nd<40 MW-12 8/22/02 42.74 392.06 349.32 nd<0.5 685 I 010 4 280 78,000 nd<2.5 nd<0.5 nd<0.5 nd<O.5 nd<0.5 M.._W-13_- 8/22/02 __ 4~'.6~ ............... 3_92:0_0 .... ~4_4_.3_5-___ nd_<0.5-_.._.._1...~9_0- _ 89__0_ ...... 290? ..... _.13~7_,_o_o_o_=n_d_<2_o_0 .... _n.d~4~ ........ _n.d_<4~ ..... .n.._d<_40- ........ nd<_40- MW-14 . 8/22/02 68.70 391.65 322.95 19 13 21 83 2,040 nd<2.5 nd<0.5 nd<0.5 nd<0.5 nd<0.5 duplicate 18 10 19 87 2,120 nd<2 5 . nd<0 5 nd<0 5 nd<O 5 nd<O 5 MW-15D 8/22/02 dry 390.72 NSWD MW-15S 8/22/02 69.26 .... nd<2.5 MW-16 8/22/02 dry 390.97 NSWD M?:~_!7_D_._ :__8/_2. 2~0~ .... .d~ ............... 390.91 NSWD uw-17s 8/22/o2 57.93 :--i"-'s-~'5:Z;, .... ~SE.-~{- ~:~.~-'---~d~.~- .... ~i~bt~--- ~-<-0:~----.-d:~5 .... ~d~ ..... ~b.S-- MW~:I 8 8~2~2- .... ii~4156 ' ' ................................ 56 ...... r;-a~-0~§ ....... 4~b ......... ~'.'~ ....... nd~b ....... ~-~2~:~ .... Notes: Duplicate of MW-14 labeled as MW-19 on Chain-of-Custody MtBE = Methyl tertiary-Butyl Ether Results in micrograms per liter (pg/L) = parts per billion (ppb) NA = Not 'analyzed B = Benzene nd = Below Practical Quantitation Limits: BTEX-0.5 #g/L, TPHg-50 ~ug/L, and MtBE/DIpE/ETBE/TAME-0.5 pg/L; TBA-2.5 #g/L BTOC = Below Top of Casing NSWD = Not Sampled; well dry DIPE = Diisopropyl Ether . NSFP = Not Sampled, free-produ~:t present E = Ethylbenzene T = Toluene ETBE = Ethyl Tertiary Butyl Ether TAME = Tertiary Amyl Methyl Ether F-P= Free-Product Thickness TBA = Tertiary Butyl Alcohol GW = GroundWater GW Elevation corrected for Free Product using formula: GW Elev = Reference Elev.-[Depth to Water - (Product Thickness)(0.8)]~ E2C Remediation, LLC TI- I Project Number 1801BK04 September 30, 2002 .. TABLE 2 · SUMMARY OF HISTORICAL GROUNDWATER ELEVATION DATA Mr. Fast Service Station 600 Brundage Lane, Bakersfield, California 'TO© ELEV. TOTAL DEPTH TO GW ELEV. ELEVATION WELL ID DATE DEPTH GROUNDWATER CHANGE (feet MSL) (feet BTOC) (feet BTOC) (feet MSL) (feet) 7/20/95 4/5/96 NM? 3/27/97 NM? 10/20/98 1/11/99 NM? .... 5/~-~9--9~ N/S .............. ~i~ ......... ..... _8/_20_ _/_9_9__ 40.96 . 12/7/99 40.96 MW-1 3/30/00 46.35 7/3/00 NM? 1/3/01 51.73 43.28 350.75 6/4/01 ..... _5_1.8__0 ............. .4_2._1_5- ..... 351.88 1.13 8/6/01 _5_1 ._8.0 ..... 40.32 353.71 1.83 12/6/01 394,03 ...... 5_1:_8_0 ............._4--2,3_2_ .................. 351_:7_1.___ -2,00 2/18/02 52,12 45,80 348,23 -3,48 __5_/_?_6/__0~_._ ' ..... ~,,'1~) ........... ::~-- ........ 352,53 4,30 8/~_1-/0_2- ........ _5-_2:_1_1 .......... ~__4_0.1_8 ..... 353.85 1.32 4/5/96 NM? 3/27/97 NM? 10/20/98 44.36 1/11/99 44.28 5/12/99 42.76 ---8/5~/9~--- ENK ..................... 38.61 10/6/99 N/A 1_2/7_/_9_9- _4-1._47 MW-2 3/30/00 45.19 7/3/00 42.01 ..... _1_/3/--0!_ ........ 5_4.--2_9 ............. 4_3_.3~8 351.63 6/4/01 54.29 41,82 . 353.19 1.56 8/8/01 54.29 40.12 354.89 1.70 ___1__2/6/~0_1 ...... 395,01 ...... 5_4~,2~9 ................ 4~2 ,_42_ .......... 352,59 _ ....... _-~2,3~0_. _ _ 2/18/02 54.24 45.49 349.52 -3.07 5~ 1-~-/0--2- ........ -~4~- .......... ~1~0~ ......... 353,99 4,47 ! I E2C Remediation, LLC T2-1 I Project Number 1801BK04 September 30, 2002 TABLE 2 I HISTORICAL GROUNDWATER DATA SUMMARY OF ELEVATION Mr, Fast Service Station 600 Brundage Lane, BakerSfield, California I WELL ID DATE TOC ELEV, ELEVATION TOTAL DEPTH TO DEPTH GROUNDWATER GW ELEV. CHANGE (feet MSL) (feet BTOC) (feet BTOC) (feet MSL) (feet) I ..... 4/~5_/9~6 NM? . ..... _3/2_7/--9_7. ................ _N_M_M_~ .......... I 10/20/98 ..... 1--/1_.!_/99 ............. 4..5_,_4_3 5/12/99 44.21 . 8/20/99 ENK I 10/6/99 N/A MW-3 __3_/_3__0_/_00~__ , ............ _46.~44~ ........ I 7/3/00 43.05 1/3/01 ' _ .... _5-4.~0_ .... 44.21 350.43 ' 6/4/01 54.84 42.82 351.82 1.39 . , ~ 8/6/01 54.84 41.16 353.48 1.66 i· 12/6/01 394.64 54.89 43,30 351.34 -2.14 2/18/02 54.82 46.32 348.32 -3.02 i 5/16/02, __.__5_4._.8_~0~ ............. _4_1,5~4 ........ 353.10 4.78 8/21/02 ....... _5_4,84 ........... 4_0._66~ ...... 353.98 0,88 I 4/5/96 .............. _N/A ........ _~3_/_27/_9_7_ ........... N/A_ ......... 10/20/98 46,17 1/11/99 45,99 I 5/12/99 ........ -4-5~ 8/20/99 ENK 10/6/99 N/A _1__~___/9__~ .......... 4~2_,65_ ....... MW-4 3/30/00 .......... _4_55,_8_2 ............ 7/3/00 43,10 I 1/3/01 ..... _54:2_9 4--3_._8_0 350.34 6/4/01 54.12 43.08 351.06 0.72 8/6/01 54.12 41.22 352.92 1.86 I ...................... 351.34 -1.58 1 2/6/01 394.14 54,14 .... - ....... :- ~0- ......... 2/18/02 54,14 45,98 348,16 -3.18 --~/¥6-/~-2 .... -54,~1-~ .......... 4-2~ ................... 351,~- ..... 3.44 I _____8/2__1/-0.2_ ..... _5-4:_1__0. ................... _40,8__2- ................. 3__53 ,__3__2_ .... 1,72 I i E2C Remediation, LLC T2-2 ! i m 'Project Number 18015K04 September.30, 2002 I- TABLE 2 I SUMMARY OF HISTORICAL GROUNDWATER ELEVATION DATA Mr. Fast Service Station .. 600 Brundage Lane, Bakersfield, California I ELEVATION · TOTAL DEPTH TO GW ELEV. WELL' ID DATE TOC ELEV. DEPTH GROUNDWATER CHANGE (feet MSL) (feet BTOC) (feet BTOC) (feet MSL) (feet) I .... 3_/_2_7_/77 ..................... N_/~A_ 10/20/98 51.45 1/11/99 51.31 5/12/99 ENK ..... -4p'-75- 8/20/99 42.77 1227/99 43.99 I 3/30/00 51.20 7/3/0-O 43.89 MW-5 1/3/01 57.00 .44.12 349.31 I 6/4/01 ....... 5_7_:. _4_0~ .............. 4_3?__8 ............. _3~,.9_._4_ 5_ .........0.14 8/6/01 57.40 42.10 351.33 1.88 12/6/01 57.40. 43.16 350.27 -1.06 393.43 I 2/18/02 57.40 46.48 346.95 -3.32 __ 5/~_2 _2/0~2___ '---~-~i~,~4-- ....................... ~ ............ ~-~.~-2- -' ~- - 350.51 --- -- 3.56 8/21/02 57.38 41.59 351.84 1.33 I 3/27/97 ........ _N./A 10/20/98 45.70 1/11/99 45.63 44.10 5/12/99 ENK 8/20/99 39.94 12/7/99 N/A 3/30/00 46.61 7/3/00 41.58 MW-6 1/3/01 ...... 5~3.2_0_ ............... _4~3.0~7; ..... 350.69 '1 I 6/4/01 53.06 , 41.30 352.46 1.77 --'~/~)~- ........ ~3~i-6 ............... -3-9.75 ........ 354.01 1.55 12/6/01 53.18 42.14 351.62 -2.39 I __~18~/_0_2_. _. 393.76 _5_ 3_:~10 ~4_5.~1.8_ 3~4_8:58 -3.04 5/22/02 ~ 53.10 41.23 352.53 3.95 8/21/02 53.10 39.30 354.46 1.93 l ! I i E2C Remediation, LLC T2-3 I Project Number 1801BK04 September 30, 2002 TABLE 2 I SUMMARY OF HISTORICAL GROUNDWATER ELEVATION DATA Mr, FaSt Service Station 600 Brunda9e Lane, Bakersfield, California i TOTAL DEPTH TO ELEVATION WELL ID DATE TOC ELEV. DEPTH GROUNDWATER GW ELEV. CHANGE (feet MSL) (feet BTOC) (feet BTOC) (feet MSL) (feet) I _2/__2_7/_9_7_ ................ ~_9_:5_P_ 10/20/98 49.34 '~ 1)~1/9-9 ........... : ...... -5~;~-6' 5/12/99 ENK 42.51 8/20/99 ~ .......... .4_5_._1_ 3_. .............. 12/7/99 45.13 _.3_/30~ ./_0_0_ · MW,7 7/3/00 N/A 1/3/01 52.80 45.08 348.55 I 6/4/01 ...... _5_3:7_ 2- ............. ~4_4_._5_ _2 ............................ 3_49.1~1 ................. _0.5~6 ........ 8/6/01. 53.72 42.78 350.85 1.74 12/7/01 53.72 44.32 349.31 -1.54 -- -~/-19--/~-' -- 393.63 .... ~3.--~8 .................... -Z~.-2~- .................... -3-~ 6 .-4~' .......... -2.91 5/22/02 53.68 43.31 350.32 3.92 8/21/02 53.71 42.20 351.43 1.11 I 7/3/00 ENK 43.42 1/3/01 52.80 43.90 350.05 6/4/01· 50.90 43.36 350.59 0,54 8/6/01 __~5_0..__9_. _0_ .............. ~4_.1_ :5_8- ........... 352.~37 _ _ 1.78 MW-8 12/6/01 50.90 43.18 350.77 -1.60 ................... 393.95 2/18/02 50.92 46.22 347.73 -3.04 .... _5_/._1__6f_0_2__ - .... ~(~': ..................................................... 42.62 351.33 ~- .................. 3.60 8/21/02 50.89 41.06 352.89 1.56 I 7/3/00 ENK 44.02 1/3/01 51.60 45.14 348.91 6/4/01 ............................... 50.80 -4-3 ~ ~ ............................ 350.53 ~----- 1.62 I 8/6/01 50~.82- ................ 4__2_.._2_1_ ......... 351.8_4_ ......... 1.31 MW-9 12J6/01 50.72 44.24 349.81 -2.03 "~/~1-~-'- 394.05 ...... ~5-(J~6~8'--; ........... ~,6.~4 .................... -~,-~ -- .-2.70 . I ..__.5_/1_6_/_0.2_ .... _50:6_6 .................. _4 _1_._9_2. _ ............ 35~2:1_ 3_ ............ _5..02' 8_/2_!_/_0_2_ ...... _5_0_.6_.9 ................ _4_'1_.6~1 ............. 352.44 0.31 7/3/00 ENK 45.51 I ___1/_3/_0~1 __ 52.50 . 45.28 347.63' 6/4/01 52.34 45.34 347.57 -0.06 8/6/01 52.34 43.36 349.55 1.98 ! MW-10 - -~!--2/-6/-0!-: 392.91 52.34 44.14 348.77 -0.78 2/18/02 ......... -5-2;3-2 .......... i ......... ~:'i-~ ....... ~-- §4-~:~ ........... -2.98 5/16/02 52.20. 44.94 347.97 2.18 _, _ ~_/_2_ 1__/.~ _2..._ 52.00 . 42.53 350.38 2.41 7/3/00 ENK 45.75 . I. MW-11 1/3/01 391.35 48.30 44.92 346.43 WELL SILTED UP, CONVERTED INTO VAPOR EXTRACTION WELL .,~ E2C Remediation, LLC T2-4 ! Project Number 1801BK04 September 30, 2002 TABLE 2 SUMMARY OF HISTORICAL GROUNDWATER ELEVATION DATA Mr. Fast Service Station 600 Brunda~le Lane, Bakersfield, California TOC ELEV. TOTAL DEPTH TO GW ELEV. ELEVATION. WELL ID DATE DEPTH GROUNDWATER CHANGE '(feet MSL) (feet BTOC) (feet BTOC) (feet MSL) · (feet) .___6/_4/~01 ...... ........ 63.52 54.76 336.46 _ _8_/6/0~1_ ....391.22 63.52 47,65 343.57 7.11 12/7/01 63.52 45.08 346.14 2.57 MW-11R ___2_~_1__~_/_0~2 6_~3,_4_0- -5.4._6_3 _3.3_6_._-59. _- _9_, .5_ .5_ ~ __ 5/22/02 63.40 48,68 342.54 5.95 391.33 ..................... 43.02 8/21/02 63.39 .... : .................... 6/4/01 NMFP NMFP NMFP ~.~/6/0~? .... 392.01 NMFP NMFP NMFP 12/7/01 44.78 347.23 51.65 MW-12 2/19/02 ................................ _3_4__0_:_41~ ..... -6.87 5/23/02 43.71 348.35 7.94 392.06 .............................. 8/21/02 64.89 42.74 349.32 0.97 6/4/01 65.40 58.10 334.55 '-~8~_/6/~-_-~ 392.65 ................. ~-:- .................................. ~.:i-3 ...... 6__5._4~0 ........ _,50_._97_ .... 341.68 12/7/01 ' 65.38 49.52 343.13 1.45 MW-13 2/19/02 65.38 57.43 334.57 -7.91 5/23/02 66.10 58.70 333.30 -1.27 392.00 .__8/_2 !_/0_2- ....... 65.38 ............. _4_7-:_65_ ........... __3_4_4 .~3 5_ ........... _11_._05~ _ 6/4/01 77.00 69.88 321.99 ---~/~1 --- 391.87 .................................. _ ' 76.9_0_ ........... _6_87_1 12/7/01 76.92 68.50 323.37 -0.09 MW-14 2/18/02 76.98 69.30 322.35 -0.80 -5 /-~ 3-/- -0 2~ - 391.65 77.48 69.50 322.15 -0.20 8/21/02 78.96 68.70 322.95 0.80 .~._ 1__2Lr7_/01 .... ~87_.2~44 .......... d_w_ ............... :.'"_:.:" .... 2/18/02 _ _8~7:2~4 .............. d__~__ ................ :_-_.-_-_-_-_.-_-__ . MW-15D 5/22/02 390.72 87.18 dry ........ 8/21/02 .... 8~7.~1_8 .............. d_ry_ ........... "'~'_'_'2_' 12/7/01 73.24 70.72 320.03 2/18/02 .... 7_3:3_0_ .................. _~ .............. _"Z_T"_ MW-15S --~'2~-02- 390.75 73.22 70.00. 320,75 8/21/02 73.25 dry ........ .... _1___2/~7_/~01 _ _ ~ 7_9_:_!_,0- ................. d_.ry_ 2/18/02 ..... _7_-9:1_2 ................. _d_g_ ................. '.:'_:.7 MW-16 5/22/02 390.97 _ 7_8_:-5_5 ................. dr)/_ _ ...................... __8_/.2_.~.!_0_ .2. _ _7_9:_1_0 ............... dry ........................ '77'-'_:'_ ................................. I E2C Remediation, LLC T2-5 I Project Number 1801BK04 September 30, 2002 TABLE 2 '~~ SUMMARY OF HISTORICAL GROUNDWATER ELEVATION DATA Mr. Fast Service Station 600 Brunda~le Lane, Bakersfield, California TOC ELEV. TOTAL DEPTH TO GW ELEV. ELEVATION WELL ID DATE DEPTH GROUNDWATER CHANGE (feet·MSL) (feet BTOC) (feet BTOC) (feet MSL) (feet) 2/18/02 ...... 9_1_.29 .......... ~ ............. MW-17D___.________5/22/02 390.91 ....... _9_1_.__0._0_.' ................ d.~ ........... ' .... I _-..--_ _8(2_1_/_ _0_2- ' - ....... _9!._0.5 .......... dry_ .................... 7- -.-_;-_- -_ . ~_ 1_ _2L?_/_0__1; .... 8~1.:0~2 .: .................. _5_.7_ :!_~ ............................ 3_3_3._6..0- I 2/18/02 79.78 61.50 329.24 -4.36 MW-17S -"~5-/~-~/~--- 390.74 .......... ~7~6-~' ................. 7~i~ · 8/21/02 79.65 57.93 332.81 16.05 I 8.21.02 118.80 114.56 MW-18 ............................................ ' I Notes: avg. elev. change 3.02 Elev. = Elevation ENK = Elevation not known prior to January 2001 i GW = Groundwater NMFP = Not measured, greater than 30" of free-product N/S = Not surveYed (?) Top of Casing Elevations are measured at the north side of casing and referenced to mean sea level I Groundwater Elevations-.are not corrected for product thickness before 01/03/01 Groundwater elevations after 01/03/01 are based on Benchmark on canal abutment I I I i E2C Remediation LLC T2-6 Project Number 1801BK04 September 30, 2002 TABLE 3 SUMMARy OF HISTORICAL GROUNDWATER ANALYTICAL DATA . MR. FAST SERVICE STATION 600. Brundage Lane Bakersfield, California WELLEDI/ B I T I E / X TPHg I TPHd I TBA / MtBE' I DIPE I ETBE t TAME I 7/2o 9 4,200 3,ooo ND 40,000 4/5/96 NA NA NA NA NA NA NA NA NA NA NA 3/27/97 170 27,000 5,000 30,000 210,000 NA . NA 22,000 ' NA NA NA 5/12/99 NSFP NSFP NSFP NSFP NSFP NA NA NA NA NA NA 8/20/99 NSFP NSFP NSFP NSFP NSFP NA NA .NA NA NA NA MW-1 1/3/01 nd<20 460 680 19,700 18,890 Nh nd<200 nd<20 nd<20 nd<20 nd<20 1/3/01 (Dup) nd<20 710 1,400 18 17,930 NA nd<200 nd<20 nd<20 nd<20 nd<20 8/6/01 nd<50.0 585 830 7,760 33,500 NA nd<250.0 nd<50.0 nd<50.0 nd<50.0 nd<50.0 12/6/01 nd<0.5 nd<0.5 230 5,280 73,890 NA nd<2.5 nd<0.5 nd<0.5 nd<0.5 nd<0.5 E2C Remediation, LLC T3-1 Project Number 1801BK04 September 30, 2002 TABLE 3 SUMMARY OF HISTORICAL GROUNDWATER ANALYTICAL DATA MR, FAST SERVICE STATION 600 Brundage Lane Bakersfield, California B T I S I X TPHg I TPHd I -TBA / MtBE DIPE I ETBE I TAME WELL ID DATE ~g/L) 4/5/96 <0.3 <.3 <0.3 <.03 <50.0 NA NA NA NA NA NA 3/27/97 1.0 6.2 0.83 4.5 44 NA NA NA ___ ~A ......... _N_A_ ......... ~N_A__ 10/20/98 <0.5 <0.5 <0.5 <0.5 <50 NA NA <0.5 NA NA NA 5/12/99 <0.3 5.5 <0.3 1.52 <500 NA NA <2.0 NA NA NA 3/30/00 <0.3 <0.3 <0.3 · <0.6 <500 NA NA <0.5 NA NA NA 3/2/01 ' nd<0.50 nd<0.50 nd<0.50 nd<0.50 nd<50 NA nd<5 nd<0.50 nd<0.50 nd<0.50 nd<0.50 6/4/01 nd<0.5 nd<0.5 nd<0.5 nd<0.5 nd<50 NA nd<2.5 nd<0.5 nd<0.5 nd<0.5 nd<0.5 8/6/01 nd<0.5 nd<0.5 nd<0.5 nd<0.5 nd<50 NA nd<2.5 nd<0.5 nd<O.5 nd<0.5 nd<0.5 2/18~02 4.7 3.90 nd<0.5 31.3 170 NA nd<2.5 nd<0.5 nd<0.5 nd<0.5 nd<0.5 5/16/02 1.6 58 1.0 37.9 470 NA nd<2.5 nd<0.5 nd<0.5 nd<0.5 nd<0.5 8/21/02 1.2 5.2 1.7 5.0 . 390 NA .nd<2.5 nd<0.5 nd<0.5 nd<0.5 nd<0.5 E2C Remediation, LLC T3-2 Project Number 1801BK04 September 30, 2002 ' " T/C, BLE 3 .. SUMMARY OF HISTORICAL GROUNDWATER ANALYTICAL DATA MR. FAST SERVICE STATION 600 Brundage Lane Bakersfield, California ' l a I T I E / X TPHg / TPHd I TeA / UtaH D PE ETBEITAME WELL ID DATE [ ........ : ................................................................................................................................................................................................................................................................. ~g/L) .... ........ 4/5/9~6 ............ 4_1_ ............ _4_2 ............. _3._5___' _3_,_0.0_0.0~0 ___ 8_;60~0__- N~_A HA HA HA HA HA 3/27~97 37 8.4 170 1,100 12,000 NA NA NA NA NA NA .__ 1~0/_2Q/9_8 _4_:6 .. _1/1_1_.1_99__.~_ ......... _4_.0__ ........ 1-6_._0_0 ...... _0,6_0- ......... 1_§_0_ ...... 8,20_0 ...... _NA_ NA 65:0 NA NA NA 5/12/99 8.36 <0.3 <0.3 421 14,300 NA NA 69.4 NA NA NA 8/20199 <0.3 <0.3 <0.3 <0.6 <500 NA NA <2.0 NA NA NA ..... -10l~g .... ~0~3 ........... . ._3_/_3_Q/_07 ....... _1._04 .......... ~.06 _ <0.3 89.60 1,020 NA NA <0.5 NA NA NA .... 7/3/_~)_0- ......... ?_50_._0_ ....... _<._0_:_5_ ..... <0~.~5~ ....... <0.5 ....... <50_ ........ __N_A NA <0.5 NA NA NA MW-3 1/3/01 nd<0.50 nd<0.50 nd<0.50 nd<0.50 nd<50 NA nd~,~--- nd<0~5~--"-~-~0:5(~--n~-<0~-0-: n~-0~-~- .... ~(~01 ....... ~_d<0.50 ........ _n_d<O.5_o .......... _n_d_<~._50~ .......... ~_0._ ..... _2.,7_0__4_ .... NA n_d_<_5_ .... n~d_<0._5~_ _~d_<0.5_o_.._ _.n._~<o~._50__. nd_<_0._5_0- 6/4/01 <5.0 <5.0 <5.0 <5.0 383 NA nd<2.5 · nd<0.5 nd<0.5 nd<O.5 nd<0.5 -dup <5.0 <5.0 <5.0 <5.0 388 ' NA nd<2.5 nd<0.5 nd<0.5 nd<0.5 nd<0.5 ..... 8_!6/01 ......... ~d<0:5 ............ nd<0.5_ ............ _n_ _d?_0._5 .......... __n.d_<O. 5- ......... _n__d <_ _5?_ _ NA nd<2.5 nd<0.5 nd<0.5 nd<0.5 nd<0.5 12/6/01 nd<0.5 1.06 nd<0.5 nd<0.5 515 NA nd<2.5 nd<0.5 nd<0.5 nd<0.5 nd<0.5 .... dUP --~ ..... I _ _n~_<_..0_._5 2/18102 19 55 ND 25 1,140 NA nd<2.5 nd<0.5 nd<0.5 nd<0.5 ' nd<0.5 - --5~.1-~-~2- ...... ~-~'0.~ ....... -~1-<~ .5 ......... ~-d-~)~5--- -- -~ ~1'~-0:~--' nd<50 NA nd<2.5 .... n~d~)-.~- - nd<0.5 nd<0.-~ - - n-d-~0-.~-- E2C Remediation, LLC T3-3 Project Number 1801BK04 September 30, 2002 TABLE 3 sUMMARY OF HISTORICAL GROUNDWATER ANALYTICAL DATA MR. FAST SERVICE STATION 600 B~undag-e 'Lane Bakersfield, California B T E X mPHg mPHd I TBA I UtaE DIPE I ETBE I TAME WELL ID DATEt ......................... I ......................... ! ........................................................................... :.~-~-i--i .......... ' ; ...... ................................................................. ' ...................... ' ................... / · ' ' 4/5/96 <0.3 <0.3 0.75 260 1,800 NA NA NA NA NA NA 3/27/97 2.00 20.0 1.10 9.8 340 NA NA NA NA NA NA .... :1-~i' i'/'9g ........ -<-~.-~ .... -~-0. ~ ....... ~(~:~ ..... : <0.5 <50 NA NA 7.2 NA NA NA .... ~)Ji-2/-99 ........... 58.-7 ....... 9.8:7- ............. -3-8~ ...... ~-'~ ~0~-0 ....... 1~-,600 - ~- .......... N~A .... 5~-~,~3 ....... ~IA ........ -N-~ ........ -I~---- 8/20/99 <0.3 <0.3 <0.3 <0.6 <500 NA NA 3.47 NA NA NA 10/6/99 <0.3 <0.3 <0.3 <0.6 <500 NA NA <2.0 NA NA NA · ~2-~7/-99 .......~0.3 ......... <0.-3 .........~-~:-3 ....... -1~1-1- ..... <500 NA NA 5.15 NA NA NA 3)~)~0-0 ~(~:~ ....... ~0.3 ....... <~0.-3 ......... ~'0:~ ..... <500 HA NA <0.5 HA HA HA MW-4 ..... 7/3/00 ................ ~0.5 .... ~- ~:-5- ........ -~-(~-:~ ......... ~:~:~ .......... T<5~ .... HA--' NA <0.5 HA HA HA 113101 nd<0.50 nd<0.50 nd<0.50 nd<0.50 nd<50 NA nd<5 nd<0.50 nd<0.50 nd<0.50 nd<0.50 ..... ~/-2~0~- ....... -n'd-~6.~5 ........ ~a ~-o'.~1~-" "- - n~l<-O:~'- n~J~5.-~): nd<50 NA nd<5 nd<0.50 nd<0.50 nd<0.50 nd<0.50 ' '-6-~4/0-1 ...... -~;~.5 ....... -n~<0:~- .... ~d-~.-5 .... -n~-<-0~'5 .... -n-~;50 ........ NA- ........ ~d-<~.5---n-~;~).~5- ---~;~-~5 .... -n-d~).5 ..... ~1'~).5- ....... ~)6~Ol- ....... ~'cl~O~-~)- ...... ]nd<-(~:'~ ..... -r~'~-(~:~5- ..... ~1-<~ ...... ~-~5o~ .... N~,: ....... nd<2:~- .... n~-0:~-- nd-~:~- .... -n-~-~0-.-5- ---n~<0'.5-- .... i 2~6)6~ ...... .:-6:~,- ..... '~ ....... ~0 ......... -2~,~ ....... 5:~)"i~- ..... hA- ~2~.~5- ..... ~-CI<~. 5~ ..... ~-~1-~6.5- ....... ~d-<0.--5 ...... r~0.-5-'- ' "2)18/0-2 ....... 54 .............. 2~-0' ........... 4-.'7- ......225 200 NA nd<2.5 ' nd<0.5 nd<0.5 nd<0;5 nd<0.5 .... 5/i-6)05- ........ 'i.-~ ............ ~ ............ ~:2-': ........... ,~-0 ....... -64~- ........ N-,~ ....... n~ci;~-:~ ...... ~ c~;-°-.'~-- ' --nd-;0:-~- ....... ~d;0:5- ...... ~:~:§- ' ' 8/2"ii02 ............. ~ ............ ~,:~ .............. i.1 ......... -,~.-4 ........... 25~ ......... -N~-- ~a;2:~- ..... ~-a:~b.-~- -n~-<-b.'~-- - n-al'<-°-.-5' ..... ~d-~3:5-- E2C Remediation, LLC · T3-4 Project'Number 1801BK04 September 30, 2002 TA--BLE 3 SUMMARY OF HISTORICAL GROUNDWATER ANALYTICAL DATA MR. FAST SERVICE STATION 600 Brundage Lane Bakersfield, California B T E X -- Te"g I TPHd I TBA / MtBE I I =.uE I TAME WELL ID DATE ~ . ~ (pg/L) 3/27/97 8.8 32 3.6 29 320 NA NA NA NA NA NA '.!0/2_0./_9~ .......... ,<__0.5_ ...... _<_~._.5_ ......... <0_:5. ........ _<0.5 ......... <_50_ ...... NA ____ NA <0.5 NA NA NA 1/11/99 <0.5 3.9 <0.5 1.50 <50 NA .NA <0.5 NA NA NA 5/~12)99- ....... ~<~):3 ...... : -: <0'~3---- <0.3 1.27 <500 NA NA 21.40 NA NA NA · ' 8)20)9~ ......... :<0-~ ......... ~0'.-3 ...... ~).3 ......... ~)~-~ ........ <5-~)--- - NA ----i~-~,- ..... ~)~ ..... --~, ..... :~1-,~ ........ ' ~2fi)~ ........... ;01~ .......... <~'.-~ ....... ;~)t3- .......... <-0-i6- ..... <§-bt)- ..... -~× ........... hA- ...... <1-.~ ...... ~i~,- ......... -N'^- ....... ~7~--'-- "3~3-~'0-0 ......... <~3- ..... ~(~.-3- ..... -<-0.3 ........ ~0.-3- ...... <~)-0- ........ ~- ......... N~ <0.5 NA NA NA :_ _7/3_/_0_~_._._: ...... <_0_.5 ......... _<_0_t5_ ...... <--0:5-- ......... <. 0_'5_ ..... <~ 5-0. ....... ._N_ .A_ ......... ~N_A_ ........ <0.5 NA NA NA MW-5 .1/3/01 nd<0.50 nd<0.50 nd<0.50 2.46 - nd<50 NA nd<5 nd<0.50 nd<0.50 nd<0.50 nd<0.50 3/2/01 nd<0.50 nd<0.50 nd<0.50 nd<0.50 nd<50 NA nd<5 nd<0.50 nd<0.50 nd<0.50, nd<0.50 6/4/01 nd<0.5 nd<0.5 nd<0.5 nd<0.5 nd<50 NA nd<2.5 nd<0.5 nd<0.5 nd<0.5 nd<0.5 -' 12)6~01- ......... 12~'~i .... ~4-8-0- .... :105 .... 3~5- ........ 2,~-0- .... , ~, ..... n~'~-~-~---- ~n~l-~;' - -~-~'~5 ...... ~-d-~-~):-~ ...... r~'5-'- ' -2):1'~)~;~; ......... .3~(~' ' ...... :1,060 ......... -n(J~0~.'~ ......~72-(~ ........... ~9-0- .... NA nd<2.5 nd<0.5 nd<0.5 nd<0.5 nd<0.5 5/22/02 nd<0.5 nd<0.5 nd<0.5 20 220 NA nd<2.5 nd<0.5 nd<0.5 nd<0.5 nd<0.5 "~/-~)'~-)~)-2- ....... :1-i~ ......... -6~9 .......... 2~, ............ 6~5- ........ ---9-0- ...... ~1~,- .... nd<2.5 n-~-o~- ..... n-d;~):-~'-'- --~d-<-0:~--- E2C Remediation, LLC T3-5 Project Number 1801BK04 September30, 2002 T.~BLE 3 SUMMARY OF HISTORICAL GROUNDWATER ANALYTICAL DATA MR, FAST SERVICE STATION 600 Brundage Lane Bakersfield, California WELLIDDATE ........... ~ ........... 1 ........... ~. ........... l ............ E. .......... l ........... ..X. ........... I ....... ?.."..~ ...... L..?"..~.'....I ........ .T.~.~ ....... J ....... ~.t.~.~ ....... I ...... ~!.....~......I......~.F.....I.....~.~.~.... ~g/L) 3/27/97 0,98 5.90 0.92 5.80 60.00 NA NA NA NA NA NA 10/20/98 <0.5 <0,5 <0,5 <0,_5__. _ _ <50 NA NA NA NA NA NA 1/11/99. <50.0 5.30 <0.5 2.80 <50 NA NA <0.5 NA NA NA 5/12/99 <0.3 1.05 0.62 4.67 <500 NA NA <2.0 NA NA NA .8/20/99 . <0.3 <0.3 <0.3 <0.6 <500 NA NA <1.0 NA NA NA 12/7/99 NA NA NA NA NA NA NA NA NA NA NA 3/30/00 <0.3 <0.3 <0.3 <0.6 <500 NA NA <0.5 NA NA NA 7'-/~)00 '-' <0:S- -<0.5 .... ~<-0.-~ ...... ~).5-- .... <50 .... ~ ....... -fi~ ........... <0.5 -- ~,- ~'N~ ........... -N~---- MW-6 113101 nd<0.50 nd<0.50 nd<0.50 nd<0.50 nd<50 NA nd<5 nd<0.50 nd<0.50 nd<0.50, nd<0.50 3/'2/0i' nd'~0.50 ' 'na-~o.~o ..... n-d-~b'.-~6 ..... ~1-<~:~6 .......-~-d~5-0- ............ ~/~, ............. ~-~i~ .......... n-d~6~-~5 ....n~l-<0.50 .... nd<(J.-~6 .... ~'~i<-0.~-" 6/4/01 nd<0.5 nd<0.5 nd<0.5 nd<0.5 nd<50 NA nd<2.5 nd<0.5 nd<0.5 nd<0.5 nd<0.5 8/6/01 nd<0.5 nd<0.5 nd<0.5 nd<0.5 1,850 NA nd<2.5 nd<0.5 nd<0.5 nd<0.5 nd<0.5 12/6/01 6.41 270 77 255 2,150 NA nd<2.5 nd<0.5 nd<0.5 nd<0,5 nd<0.5 2/18/02 nd<0.5 5.8 nd<0.5 25 150 ~ NA nd<2.5 nd<0.5 nd<0.5 nd<0.5 nd<0.5 5/22/02 0.7 nd<0.5 nd<0.5 25 180 NA nd<2.5 nd<0.5 nd<0.5 nd<0.5 nd<0.5 8/21/02 1,9 7.6 0.7 5.4 60 NA nd<2.5 nd<0.5 nd<0.5 nd<0.5 nd<0.5 E2C Remediation, LLC T3-6 Project Number 1801BK04 September 30, 2002 TA-'bLE 3 SUMMARY OF HISTORICAL GROUNDWATER ANALYTICAL DATA MR, FAST SERVICE STATION 600 Brundage Lane Bakersfield, California WELL IDI DATE [ ......................... B I ......................... T l ......................... E J ......................... X I" .................................................... TPHg I TPHd I , ................................................................................................................... TBA / MtBE I OlPE I ETBE I TAME I ..... 3~2~/~.7- ........ 2,490_ .... ~ .4_,_0_ ~_0 ........... 2,3_00 ......... _14_,0_0_~ .... 1__4_0_,~ 9~ ....... ..N_A_ ........ __NA. ....................... N~ ........ _N.A_. ......_UA_ ...... _ !.0/20/_9_8 ............ !_1.0 ...... _.25,00.~ .... ~3 ,_.5_0_0_ ....... _.2_7_,0~00 ........ 1~50_,_00_ .0~ ..... NA~- ...... _NA__ ...... _1.50_ ............ UA_ .........N__A ........_N_A_i__ ~1 (1 !/_99_ ......... .22? ........... 31 _0_~)O .... 4_,.2_0__0__- _ _3_1_,_o_o_o ........ _1_2_o,00~ ...... NA_ ....... _N__A~ .... ~_8~ ............ _U~A ......... _N_A_ ........ NA_ ..... 5/12/99 NSFP NSFP NSFP NSFP NSFP NA NA NSFP NA NA NA 8/20/99 NSFP NSFP NSFP NSFP NSFP NA NSFP ..... t.2~.._/_9_9- ..... _NSFp ...... _N_S_.F_P. ......... __US_E_P ..... .N__SF_P ..... _NS_F? .... ~A_ . _ 3/3_0./__00. ....... N_SFP ....... '_U_S_F_P_ ..... _N_.SF_P_ ........ N__S_F_.P_ ..... ~NS_F? ....... N_A~ .... 7~(_3L0..o_ ........ NSFP~ ....... ._NS_F_? ..... N.~F~P _ N~S_FP~_ ___N_SF~P ......... 1/3/01 NSFP NSFP NSFP NSFP NSFP NA NSFP NSFP NSFP NSFP NSFP MW-7 .................................................................................... ..... 3_/F0_~_ ........ <2_0 ........... _9,_4p0_ ..... _4.,_!?_0 _ _2__8.,0._00 ..... _2_4,9.40_ ....... NA_ .......... _<.~00 ........ _<_27 ...... ~20 .......... <20 ........ _<_2_0_ ..... · _6.!4!0_~ ............ <_50._0 ...... 5_,7_3.0. ..... ~:5_9_9_ ..... ~ 3~,2_30.. ......... _8Z_,960 ....... NA_ .... _<2_5_.0_:0_ ..... _<_5_0.g_ ......... ~_59~.0 ...... .<_S_0-_0 ...... <_50.0__. ..... _8/_6/_0_! ........... <_50.0_ .......... _!.7_80 ........ _2__.3_~0_ ..... 1~_6g_0_ .... _35,_50_0 _!2m.01 ............. _nd<?~5 ._ 2.3_!.5 .... ~,.!_20 ......... _8,2~0 ....... .42,8_3_5 ......... . .2(_.1__9/_0_2__- _~NSFP_ ....... _NS_F_P ..... _N_S_F_P__ __ NSFP_ ....N~SFP ..... N_S___F_~ 5/22/02 1.8 300 nd<0.5 3,120 31,500 NA nd<2.5 nd<0.5 nd<0.5 nd<0.5 nd<0.5 _: duP_ ............. _n._d<_O :5 ....... _4_40_ ..... nd<~:5 ......... _3 ~:Z_0 ....... 3_.5_,.0_ 0__0_ ........ .... _8(2_~/_02 .......... nd<0..5_ ............. _8~0 ....... 8_!.~ ......... 5,6_50 .... _9_4.,_0_00_ _ U..A_ .......... _n_d?_2_._5__ _g_.d_<.g:_5_ ........... ~d?_0:5.. nde0_._5_ .... _.n.d_<_0_.~5_ E2C Remediation, LLC T3-7 Project Number 1801BK04 September 30, 2002 TABLE 3 SUMMARY OF HISTORICAL GROUNDWATER ANALYTICAL DATA MR, FAST SERVICE STATION 600 Brundage Lane Bakersfield, California B T S I X I TPHg I TPHd I TBA I MtBE DIPS I ETBE I TAME WELL ID DATE I . (/Jg/L) 7/3(0? ..... 820 .... 6_4~.070_ ....... _6_,_30_0- .... ~3,_0_0_0- .... ~260z_00_0 ....... _NA~__ NA 550 ....N~A ........ _N_A~ ..... _N~A_ 1/3/01 34 45,000 5,000 30,800 40,910 NA <0.50 .. dup_ .... <2.00 ..... _4_.8_:._000 _. 4~_1_0_0- ...... 2~,_00o . _. 3_3:6_?~ ..... __N_A__ ...... _<_2,_0_0__0_ ..... <--2_.0_0' __;<_2_00 ..... <..2.0_0_ ......... · ' ...... _6(4~/01 ..... nd~5~.(~ ....... 4_3_,56_0_ .... __3_,7~_ ....... _1_4,7.6_0 ...... __6_4.32_0_ ......... N_A L_ ~nd<2_5_°_-_0 __n_d__<_50'0-_ __n_d?_50_._o__ . n_d__<_5.0._0._' .__nd_ ~ 5_0. ._0 _ MW-8 ...... _8_/.6(0.1 ........ _n.d_<50.0 ........ ~.0~07_O ........ 7_,~__87 ....... 1_6.,_800 .... 7~0.;35_0 ......_.N_A_ ....n_d_~2_5. 0 .__0_ nd<50.0 nd<50.0 nd<50.0 nd<50.0 _1_ ~6__/_0J .... nd?-5.O.0- ~_1_ ,_0_7 ._5 ....... 5,_167 ........ 18_,.6_5_0` ........ 107z3_.35 ....... NA nd<250.0 nd<50.0 nd<50.0 nd<50.0 nd<50.0 2/18/02 0.6 1,100 1,410 3,270 27,500 NA nd<2.5 nd<0.5' nd<0.5 nd <0_.~5 _ _n_d<~O_. 5_ ...... ,~'i-6~2 .... '~'d;0.5 ~',0-10 ...... 1~8(~(~ ...... 4,690 74,000 NA nd<25 nd<0.5 nd<0.5 nd<0.5 nd<0.5 . 8/2!/0~- ....... nd__<40_..~ _3_2.~o .... ~,9_.4_0_ ....... _1_6,8_70_ ...... 113,00_0- __N_~_ ..... ~n d_ _< 2~ `00' ...... ?_d_<_4_O _~}_d_<_40 ...... ~d<?_(~ ..... _n_d_<40_- 7/3/00 <0.5 <0.5 <0.5 <0.5 <50 NA NA __~<_0.5_ ......... NA_ ........ N__A ...... NA .... 1/3)0~ ........ nd~31~3 ..... r{d~(~'~5-0' - nd<0.50 nd<0.50 nd<50 NA nd<5 nd<0.50 nd<0.50 nd<0.50 nd<0.50 ...... ~i~/5:1 .... r~d-~-°.~0 ' -r~d';(~.50 .... ~<--0~50 .... '~d<o.~)-0 .......... nd;~)o NA nd<5 nd<0.50 nd<0.50 nd<0.50 nd<0.50 .... 6/4/01- ....... nd-<0~,~ ....... nd-~b:~--- nd :~5.-~5--- - ~-d-<~,~ nd<50 NA nd<2.5 ___nd <_0_.._,-,5_ ..... nd ?__0._5 ..... _nd.__<_0._5- _~n_d_<0._5__ ....... ~)6)5;I .......... ~-d <°~5 ......~-Ci <0.~ ~n-d"~o.~- ......nd ~5.-5- ......n'~-,~5 .... -~- ........-n-~2.5 nd <0.5 nd <0.5 nd <0.5 nd<0.5 MW-9 ' ~2.)~3~- .........-3~':9- ........5~5- ........ {0--~ ....... -4~-~)- ....~2.650 ....... NA nd<2.5 ~-;0.~5-~- -~'~i~-0:-5 .... n~-~0.-5-'---nd<0.~5 - -2~:18'i-0-2 ...... 7':3 ...... {6 ...... n-d-'~-0.-5- ---~7~ ...... 380 NA nd<2.5 --~--~0:-~ ' nd <0.5 nd <0.5 nd<0.5 .... -5~)/0~ ........ 2.1 ...........-86 ............ 6:~ ....... 63- ........... 9~ ......... ~- nd<2.5 nd <0.5 nd <0.5 nd <0.5 nd<0.5 8/21/02. 1.8 .... _7_.~ .......... 2:..8 ........... _9.__5 ....... _5.~ .......... NA .......... nd_<2~._5_ ..... _nd_<O: _5 ........... nd<_0:5- .... nd_._<`0_ .~ .... ~n_d_<__0 ._5 .... 713100 <0.5 <0.5 <0.5 <0.5 <50 NA NA <0.5 NA NA NA ...... 1/3(0i ........... nd<0:55 ~d<0155 ..... nd~0.5~0 ....... ~d-<b]'5-0 '- ...... r~'a~§0 ...... i~-A ~;:i:~-°.-~5- n--d:<5~5-6'-- n-~l<'O~5 ..... n'd<6-.'~(~'' 8/6/01 nd<0.5 nd<0.5 nd<0.5 nd<0.5 nd<50 NA nd<2.5 nd<0.5 nd<0.5 nd<0.5 nd<0.5 MW-10 ..... i 2/~6:i ...... 4:6-9 ..... ~i-~ ......... -6,~ .......... ~,~6 .......... :1:7'35 ....... -~:~ .......... ~d~2-.-~ ........ n-d~'0:~ ....... ~1-<6:~ .... ~'(J~-6:~ ...... n-~l-~-(~5' - ..... 2/~' ~)0-2 ......... n-d'~0:5- .......... ~4 ............... 5:~- ........ -25.~ .............. 51-~)' ...... ~A- .... nd<2.5 nd<0.5 nd<0.5 nd<0.5 nd<0.5 - ' 8)2~1702 ..... 1.1 · 4.9 1.7 4.5 50 NA nd<2.5 nd<0.5 nd<0.5 nd<0.5 nd<0.5 E2C Remediation, LLC T3-8 Project Number 1801BK04 September30, 2002 TA--B LE 3 SUMMARY OF HISTORICAL GROUNDWATER ANALYTICAL DATA MR. FAST SERVICE STATION 600 Brundage Lane Bakersfield, California I. B I' T I E / X I=' TPHg I TPHd I TBA / MtBE I DIPS I ETBE I TAME WS,L~D D^,s [ ....................................................................................................... ~.--. ...................... ¢'~'"'i .................................................................................................................................. 7/3/00 <0.5 <0.5 <0.5 <0.5 <50.0 NA NA <0.5 NA NA NA "':i/3/0i ..... nd<20- ....... -3;~0- ..... ~,,6~)-0' ........ ~6~-§~)-0- .... 12,0-5-0- ........ NA .... ~-~i;-~O-o- ...... MW-11 '~-.-§/2/0{ .......... '~N§ .- --NSWS ........ NSWS '--~S--~/S ...... h~-~V-~---' NSWS NS-w-s- .... Nsw--~ 3/2/0i Well taken out of serVice, silted up to 12 feet from bottom, replaced by MW-11 R; converted into VE well 6/4/01 540 11,980 1 ~390 7,230 54,410 <50 nd<250.0 nd<50.0 nd<50.0 nd<50.0 nd<50.0 12/7/01 nd<0.5 440 ND 4,415 6,775 NA nd<2.5 nd<0.5 nd<0.5 nd<0.5 nd<0.5 2/18/02 140 1,560 1,090 2,440 22,000 NA nd<2.5 nd<0.5 nd<0.5 · nd<0.5 nd<0.5 MW-11 R · duplicate 140 1,320 1,063 2,490 28,000 NA nd<2.5 nd<0.5 nd<0.5 nd<0.5 nd<0.5 --- -5i22/62 ....... 4-$- .......... ~-~;~-6 .......... 36 ......... §;'65-0 ....... ~'-~-9--,-0-0-6 ............ -~---- ~n-d~-5 .... 8/21/02 nd<40 33,280 130 16,030 108,000 NA nd<200 nd<40 nd<40 nd<40 · nd<40 6/4/01 NSFP NSFP NSFP NSFP NSFP NSFP NSFP NSFP NSFP NSFP NSFP 8/6/01 NSFP NSFP NSFP NSFP NSFP NSFP NSFP NSFP NSFP NSFP NSFP 12/7/01 NSFP NSFP NSFP NSFP NSFP NSFP NSFP NSFP NSFP NSFP . NSFP MW-12 2/19/02 NSFP NSFP NSFP NSFP NSFP NSFP NSFP NSFP NSFP NSFP NSFP 8/22/02 nd<0.5 685 1,010 4,280 78,000 NA nd<2.5 nd<0.5 nd<0.5 nd<0.5 nd<0.5 6/4/01 nd<50.O nd<50.0 nd<50.0 nd<50.0 5,580 NA nd<250.0 nd<50.0 nd<50.0 nd<50.0 nd<50;0 .... 8~-6~Ol NsFP ....... ~S-~' ~§~:~ N~i~'~ ......... ~SF~ ........ N~i~ ........... ~S-FF~ - hS~'~ ........ ~-~F~ .......... -N-S~ .... N~-F-~'-- !~/01 115 6,550 4,690 14,815 178,900 NA nd<2.5 nd<0.S nd<0.5 nd<0.5 nd<0.5 MW-13 ~19/02 NSFP NSFP NSFP NSFP ~SFp' NsFp ..... -N§FP .... ~SFP' NsFp NSFp ~P" ' 5~23~02 NSFP NSFP NSFP NSFP NSFP NSFP NSFP NSFP NSFP NSFP NSFP _ 8/2~o2.. _ nd<4O.' !~490 ...... ~0 ...... ~,~0_ ....... !~,009 .._~A_ ..... ~d<299_ ....... ~40 E2C Remediation, LLC T3-9 Project Number 1801BK04 September 30, 2002 TABLE 3 SUMMARY OF HISTORICAL GROUNDWATER ANALYTICAL DATA MR. FAST SERVICE STATION 600 Brundage Lane Bakersfield, California l a I T I E / X TPHg TPHd mBA MtBE D PE ETBE TAME WELL ID DATE [ .............. · ................................................................................................................................................................................................................................................................. (pg/L) ..... 6/4/0_1, _ _ ..8_7..! ........ 1,494 371 1,057 9,240 <50 . <25.0 <5.0 <5.0 <5.0 <5.0 8/6/01 160 187 150 138 104 NA <25.0 <5.0 <5.0 <5.0 <5.0 Duplicate 152 114 137 ' 113 82. NA <25.0 <5.0 <5.0 <5.0 <5.0 12_27/01 65 nd<0.5 75 21.35 2,400 NA nd<2.5 nd<0.5 nd<0.5 nd<0.5 nd<0.5 MW-14 ' ~7-~'~ .............. 2 ........ -8~; .............. ~-~ ........... ~ ........... 590 -- -: ...... hA--- - 100 nd<0.5 nd<0.5 nd<0.5 nd<0.5 8/22J02 19 13 21 83 2,040 NA nd<2.5 nd<0.5 nd<0.5 nd<0.5 nd<0.5 duplicate 18 10 19 87 2,120 NA . nd<2.5 nd<0.5 nd<0.5 nd<0.5 nd<0.5 12/7/01 NSWD NSWD NSWD NSWD NSWD NSWD 'NSWD 'NSWD NswD NSWD NSWD .... 2~i~)~ .... N'SwD ........ N~-~/-6 ...... -I~§~D- ........ -N~WD ......... ~I-S~/-i~- -i~1~/-~ ..... -NSEC-- ~ -~§~-- ~WE~ ...... i~S~-' --~§~]D MW-15D ' --'~-~02--~-~ --i--N"S~:D-:i" ~iL.~§W_--~_~i-.~ _"~_w_"_-D-J '_-~'-?~§W_D---~-. ~_- -~I-§~D~.__ -N~§~__~-- --~l~v~_~'~ i__.~i~_'_- '-_~i~'.s~_~E~-~i' -i-_-Lh-_sw_ ~-'~i '-__-~_S~_WD.-- .. 8/22/(~2- NSWD NSWD NSWD NSWD NSWD NSWD NSWD NSWD NSWD NSWD NSWD 12/7/01 nd<0.5 nd<0.5 nd<0.5 nd<0.5 85 NA nd<2.5 ND ND ND nd<0.5 · ~/~8)'0~-- ..... ~ISW'D .... ~I-~V~ ........ -I~1~'1~ .......... ~;~) ..... ~WD ....... N~'~ ....... ~-S~ ..... ~'~ .... ~N~D ....... N~ ...... ...... ~(2~_0_~ ...... ~.~.9.5 ....... ~d<0._~ .... ~d~:~ ..... ~50.~ ..... n_~.~0 ...... N~___ nd<2.5 nd<0.5 nd<0.5 nd<0.5 nd<0.5 1~/01 NSWD NSWD NSWD NSWD NSWD NSWD NSWD NSWD NSWD NSWD NSWD -"~-~/0~- ..... i' ' N~-D- - ~-S-~--- ~-SW-D ...... N~ ........ '~ ...... ~ ........ ~D ...... ~s~ ~-~D ....... N~D- ....... ~-WD'- MW-16 ........................................... 5/2N02 NSWD NSWD NSWD NSWD NSWD NSWD NSWD NSWD NSWD NSWD NSWD 8/2N02 NSWD NSWD NSWD NSWD NSWD NSWD NSWD ~h~-~ ....... ~-~-~ -'-"~-W~'-~ -~D- 1~/01 NSWD NSWD NSWD NSWD NSWD NSWD NSWD NSWD NSWD NSWD NSWD .... :~/0~ ....... ~S~D- .... ~- ~S-~5 .... ~'b- ........ ~-D ......... ~-~ ..... ~-~5- ..... ~.- ..... N~-W5 ...... ~-~- .... -~W~ ........ ~-S~5- MW-17D 5/2N02 NSWD NSWD NSWD NSWD NSWD NSWD NSWD -"~-~W-~ .... N-~-~ ..... -~ ........ ~-~'- E2C Remediation, LLC T3-I0 ' Project Number 1801BK04 September 30, 2002 TABLE 3 SUMMARY OF HISTORICAL GROUNDWATER ANALYTICAL DATA MR, FAST SERVICE STATION 600 Brundage Lane Bakersfield, California' I I B I T I E /' X I TPHg / TPHd I TBA ! MtBE DIPE ETBE I TAME WELL ID DATE [ .......................................... : ........ : ............................................................................................................................................................................................................ (//g/L) : ............... 12/7/01 nd<0.5 nd<0.5 nd<0.5 nd<0.5 135 NA nd<2.5 nd<0.5 nd<0.5 nd<0.5 nd<0.5 2/18/02 nd<0.5 nd<O.5 nd<0.5 nd<0.5 nd<50 NA nd<2.5 nd<0.5 nd<0.5 nd<0.5 nd<0.5 MW-17S ~)~-~0'2' ......'n~-(~:~ ...... nd~o.-5 ..... ~o.-5- - - -n-d-~0.-5 .....-n-d<50 ..... -I~A--- -n-d~2.~- ...... ~<~:~ ...... ~-~<-o.-~ ...... -~<~:~5- .... -'- ~/-~/-02 ...... ~'~J~-~)-.-5 ....... ~d~ ..... n~l<o~5- ...... -~d~-6'.'~- ...... ~-d-~O- ...... N-A- ...... -~i-~.-5---- nd<0.5 .... n~o:5- ...... ~d-<~-.~- nd<0.5 MW-18 . 8/_2_~/02_ ....... _3_6. ......... n_d<O.5 ..... 4:0 ............ 4.5 .............. nd_~5_0_ ......... _N_A_ ....... _n.d_~_2_._5___ nd<0~5 ..... nd?._0.5_ __n_d<__o._5- ..... _n_d_<0.__5- NOtes: Sampling performed by E2C starting 01/03/01 MTBE analysis by EPA Method 5030/8020 from10/20/98 to 1/3/01 NSWD = Not Sampled this Quarter; well dry MTBE analysis by EPA Method 8260b from 1/3/01 NSFP = Not sampled this quarter due to presence of free-product Results in micrograms per liter ~g/L) = parts per billion (ppb) NSWS = Not sampled, well dry, casing silted up 12 feet from bOttom B = Benzene T = Toluene : DIPE = Diisopropyl Ether TAME = Tertiary Amyl Methyl Ether E = Ethylbenzene TBA = Tertiary Butyl Alcohol (a.k.a. tert-butanol) ETBE = EthYl Tertiary Butyl Ether TPHd = Total Petroleum HydrocarbOns as Diesel MtBE = Methyl tertiary-Butyl Ether TPHg = Total Petroleum Hydrocarbons as Gasoline NA = Not analyzed for this compound X = Total xylenes ND = Below. Practical Quantitation Limits: BTEX-0.5 #g/L, TPHg-50 pg/L, and MtBE/DIPE/ETBE/TAME-0.5 #g/L; TBA-2.5 #g/L E2C Remediation, LLC T3-11 Project Number 1801BK01 September 30, 2002 TABLE 4 SUMMARY OF VES MONITORING DATA Mr. Fast Service Station 600 Brundage Lane Bakersfield, California Cumulative Cumulative Inlet Well Well Well Well Dilution Field Field Cumulative Cumulative Cumulative Date Calendar Operating Operating Flow Chamber Stack VE-2 VE-3 MW-1/VE-4 MW-6/VE-5 Air TPH in TPH out Lbs./Hr. Lbs. Lbs. Gallons Monitored Da~/s Hours Hours (scfm) % LEL Temp. (°Fi Temp. (°F) valve valve valve valve valve {ppmv) (pprnv) Extracted Extracted Destroy/ed Extracted 4/8/02 ._ 4 .............. ~7.9.P .... 97 ........ _2?0 ...... ~ .......... 628 ..... 69_2_ ..... C_ .... C_~ .... _O ........ O ...... C~_ _9_40_ ..... ?. .... 3.~1_ .... 2_6-6_i~ .......... 2,56 .......... ~4_0._0~__ 5/14/02 40 4426.9 944.9 252 3 631 618 PO PO 0 0 C 95 0.6 0.3 1461.4 1447 226.1 6/11102 '68 ..... 47.52.8 . . 1270.8 234_ .2 ....... 6~3 .... 6_1.9 0 .... C .......... 0 ........ _0 ...... C ...... 56 ...... _1_2 ........ og . ~ 1.502,.7 ...... 1.488 ........ 2~32.4 _. 7/10/02 97 5106.1 1624.1 267 4 614 656 O C O O C 30 0 0.1 1550.3 1535 2398 9/24/02 173 5348.7 1866.7 212 3 630 601 O C O O C 20 0 0.1 1573.9 1558 243.5 Notes: scfm = standard cubic feet per minute· LEL = Lower Explosive Limit ppmv = parts per million volume Lbs./Hr. = pounds per hour O = Valve Open C = Valve Closed po = Valve Partially Open E2C Remediaiion, LL C Table 4-I I Project Number i801BKO 1 September 30, 2002 TABLE 5- MASS OF HYDROCARBONS REMOVED BY VES I (based on influent concentrations) Mr. Fast Service Station 600 Brundage Lane i Bakersfield, California Ending DateI He Removed(lbs/month) I Cumulative HC Rem°veal I(Ibs) Infiuent Concentrations ' (ppmv) Fl°w Rate I(scfm) Monthly Run Time(days) I 04/01/02 0~ ~ 0__ 0 0 ___0_5_/_0_ 1/~02 ............ 15~1~7 ...................... 15__1__7_ ...................... _6_78~ ............ 254 ............... 2_7_ ........... 06/01/02 339 1857 209 237 21 07/01/02 166 2023 262 216 9 08/01/02 180 .......... --2_20_3_ .............................. _2_6~_: .................. _2_3_1 ................. _9 09/01/02 13 2216 45 300_ ..... 3 · Where: Hydrocarbons Removed (lbs/month) = Influent Concentration (ppmv) X 104 X Influent Flow Rate (scfm) X 1 lb-mole/379.5 ft3 X 86 (lb/lb-mole) X 1440 (min/day) X Run Time (days/month) I Cumulative Removed (lbs.) Hydrocarbons Based on Influent Concentrations (Since April 2002) 5000 I 4500 ~4000 5oo I ~ · 3000 ..... I ~:2500 .__=~ooo i 15oo 1000 ...... , 500 04/01/02 05/01/02 05/31/02 06/30/02 07/30/02 08/29/02 TIME I I I E2C Remediation, LLC Table 5-1 Project Number 180 I BKO I September $0, 2002 -. Average Daily Hydrocarbon Removal Rate (lbs/day) 10o Based on Influent Concentrations (Since April 2002) ~ 70 ........................................................................................................................ ~o _/ __~ . 0 04/01/02 05~01/02 05~31/02 06130/02 07/30/02 08/29/02 Time (months) Project Number 1801BK01 September $0, 2002 TABLE 6 - MASS OF HYDROCARBONS REMOVED BY VES (based on %LEL) Mr. Fast Service Station 600 Brundage Lane Bakersfield, California Ending DateI He Removed Cumulative He Removed I LEL FloW Rate I Monthly Run Time (lbs/month) (lbs) (%) (scfm) days/month) 04/01/02 0 0 0 0 0 .... ~5-/~)-'~' ............. ~-65~ ........................................................... 1050 '-'~(~i-)~ ............. 6-7~ ........................................................ 1722 .... ~8/b-1-/b2 ............. ~-7~, .............. ~ ..................................... 2424 Where: * Influent Concentration assume 100% LEL =13,800 calculated as hexane ppmv LEL estimated from difference between oxidizer and stack temperature. 1% LEL = approximately 25° F difference Hydrocarbons (lbs/month) = Influent concentration (ppmv) x 10~ X influent flow rate (scfm) x 1 lb-mole/379.5 cf x 86 lb/lb- mole x 1440 min/day X run time (days/month) Cumulative Hydrocarbons Removed (lbs.) Based on %LEL (Since April 2002) 5000 4000 g3000 2000 1000 0 04/01/02 05/01/02 05/31/02 06/30/02 07/30/02 08/29/02 Time ! I ' E2C Remediation, LLC Table 6-1~ project Number 1801BKO 1 September $0, 2002 ' Monthly Hydrocarbons Removed (lbs./mOnth) Based on %LEL I (Since April 2002) i 1200I ' i 1100 ...... 1000 ................... i .900 ................... / 600 )- ........... j 400[ ....... ~ ..... ~ ............ I 200 t-/-~ 100 04/01/02 05/01/02 05/31/02 06/30/02 07/30/02 08/29/02 Monthly %LEL o (Since April 2002) · 4.5Yo 4.0% 3.0% ~.o% 04/01/02 05~01/02 05/31/02 06130102 07~30~02 08~29~02 I I E2C Remediation, LLC Table 6-2 Project Number 1801BK01 . September SO, 2002 TABLE 5 - MASS OF HYDROCARBONS REMOVED BY VES (based on influent concentrations) Mr. Fast Service Station 600 Brundage Lane Bakersfield, California Date [ HC Removed I Cumulative He Removed I Influent Concentrati°ns Flow Rate Run Time (lbs/month) . (lbs) (ppmv) (scfm) ('days) 04/01/02 0 0 0 0 0 05/01/02 1517 1517 '--~)-~'(~(~ ................ §~3'~ ................. '~-7--. ............................ -2~,~ 262 ............. ...... i-~ ...... ~-';I-~ ~-~ ................ .......... ~2~' ~l~:~" '~-- ........ - "~:1-78~'-':- ....... -2~ ............................ -~ ~'~--5 .... 6§~-~ -/-0-~ ........ '"--i~-0- ............. 2~ .................. :"-? ..... ~ ........ 231 9 ;i'"_~'~-'~'_-__-.~_09/01/02-Z .............................................. 9 ~3_0_~ Where: Hydrocarbons Removed 'lbs/month) = Influent Concentration (ppmv) X 10 X I lb-mole/379.5 ft3 X 86 (lb/lb-mole) X 1440 (min/day) X Run Time (days/month) Cumulative Hydrocarbons Removed (lbs.) Based on Influent Concentrations (Since April 2002) 5000 4500 ...4000 ~3500 · o~ 3000 ............................................ ~ 2500 .................................................................................................... .-~ 2000 ~1500 1000 50O o 04/01/02 05/01/02 05/31/02 06/30/02 07/30/02 08/29/02 TIME I I E2C Remediation; LLC Table 5-1 Project Number 1801BKO I September $0, 2002 " Average Daily Hydrocarbon Removal Rate (lbs/day) - 10o Based on Influent Concentrations (Since April 2002) 80 ................................................... ................................... 20 :'- ................ 04/01/02 05/01/02 05/31/02 06/30/02 07/30/02 08/29/02 Time (~onths) E2C Remediation, 'LLO Table 5-2 Project Number 1801BK01 September30, 2002 TABLE 6 - MASS' OF HYDROCARBONS REMOVED BY VES (based on %LEL) Mr. Fast serVice Station 600 Brundage Lane Bakersfield, California DateI HCRemoved I Cumulative HC Removed LEL -I FlowRatel RunTime (lbs/month) (lbs) (%) (sclm) days/month) 05/01/02 1050 1050 3.4%' 254 27 07/01/02 327 2049 2.4% 216 14 08/01/02 374 2424 4.0% 231 9 09/01/02 54 2478 2.0% 300 2 Where: * Influent Concentration assume 100% LEL =13,800 ppmv calculated as hexane LEL estimated from difference between oxidizer and stack temperature. 1% LEL = approximately 25° F difference Hydrocarbons (lbs/month) = Influent concentration (ppmv) x 10'~ X infiuent flow rate (scfm) x 1 lb-mole/379.5 cf x 86 lb/lb-mole x 1440 min/day X run time (days/month) Cumulative Hydrocarbons RemOved (lbs.) Based on %LEL (Since April. 2002) I 5000 I 4000 ....................... : ............................................ ' ......................... ~ g3000 ..................................................................................... ~ 0 ~ ._~ I 1000 I 04/01/02 05/01/02 05/31/02 06/30/02 07/30/02 08/29/02 I' Time I ! I E2C Remediation, LLC Table 6~ 1 Project Number 180.1BK01 September 30, 2002 Monthly Hydrocarbons Removed (lbs./month) Based on %LEL 1200 ' (Since April 2002) 900 ..................... / ...... ~-'--: 700 .................. ~ ........ -~ .............. ~ ......... : ............................. ~ .............. 600 ..... / ....................... ~ ........................ ~---.---~ .... .--' .............................................. 400 --- /~--~ .... :-'-~ ...... 04/01/02 05/01/02 05/31/02 06/30/02 07/30/02 08/29/02 Monthly %LEL (Since April 2002) ~° ~.~[o ..................... ~ .......................... ....... -~ ................. -~,- ........... '"[;I --/ ..... : .......... : .............. '-'- ......... ~-'-"--"'~ ........ : .............................. -~ ~.o,~o ~ ....... / ~: ....... ......................................................... :.-~ .................................. ., ~.~% 1'- ....... / .............. : ....................... :----. ..................................... : ......... -- ........................................ : 0.5% :- .......... ~ ..................................................................................... 0.0% 04/01/02 05~01/02 05/31/02 06/30/02 07130/02 08~29~02 E2C Remediation, LLC Table 6-2 I Project Number 1801BK04 September 30, 2002 I TABLE 7 SUMMARY OF SOIL ANALYTICAL DATA 'l MR. FAST SERVICE STATION 600 Brundage Lane Bakersfield, California. I July 9 - 17, 2002 BORING I DEPTH B I T I E I X I TPHgl MtBE ID DATE.I SAMPLE ID (feet bgs) '"; ................................... : ................... i'~Ti~i' ....................... : ................................. I AS4-40 40 ND ND ND ND ND . ND .... A~,-:~,~- ....... -~- ........... ~E) .............. ~-D: ........ ii-~i .......... 2-9.9- ......... ¥4975 .......... -N~ ...... AS-4 7/11i02 ...... -A~;4:~ ...... ' -_'.i~0_~ii- '~ ...... N-E) .......... :1-3.~- ........ 6~;8 ........ ~ ~'~.7- ....... 4-9~ ........ ~-D- -- AS4-65 65 0.3 14.4 6.1 25.7 · 117.5 ND AS5-40 40 · ND ND ND ND 0.4 ND AS5-45 ...... 4_5_ ........... ND_ .... 0_.1-- ......... _ND~ ........... 0._1 ........... 1.~4~_ _~ND~ _ AS5o50 50 ND ND ND ND ' ND ND AS-5 7/11/02 AS5-55 5~- ....... N~D ........ ND ..... N~ ......... ND 0.1 ND I AS5-60 60 ND ND ND ND 0.5 ND AS5-65 65 ND ND ND ND 0.4 ND ..... _A_S§ -_ 3__0_ .......... ~0_ ..... N__D .......... _N? .......... N~D ....... ~N_D_ ...... 0.2 ND ....... A_S 6_- 5~0_ ........ _50~ ...... ,_ N~D ............ 0_.2 I AS-6 7/12/02 AS6-55 55 1.2 114.2 76.3 126.5 312.5 ND -- A-§6-[6-0- .............. ~)- ....... ~.~ ....... 3~8.~- ..... ~-~ ........ ~ ....... 1~ ...... ~) ..... I ........ ._A. S7-~4_0- .... 40 ND ND ND ND 2.9 ND AS7-45 ..... ~5- ............ N-D .............. -i-.~ ............. 0.--~ ......... ~'§- .... 2.2 ...... N~E)'-- AS7-50 - -~- ........ I~E)- ...... ~3 ....... ~..~ ...... :1'~-~- .... ~-~ ND · AS-7 7/15/02 AS7-55 55 0.3 3,8 2.2 2.4 110.0 ND I ..... ~,S7~-~0- = ........ -6~- ............. h-D- .......... 0-.~- ..... 0.-~ ..... 0.2 10.0 ND AS7-66 66 ND 0.5 0.9 1.1 25.5 ND AS8-50 50 ND 0.1 0.3 1.1 1.3 ND · -A~B-5~ ...... ~_-~.---5-~'..~_ i~.~N--~_-_- ...... _0:1_ ........ _ND_ ..... ': -b~-2-_~_ _-- 1.-~ ..... ND AS8-60 60 0.1 ND 0.4 0.2 1.1 ND AS-8 7/16/02 .... ~'S~-6.~ ........... 6~- ............. NE) .......... I ..... ~I-D ........ ~D-- ......... N~ .......... N~ ..... N~D ......... N~-- AS8-75 75 MW18-90 90 ND ND ND ND ND ND '---M~1~-~-5 ........ 9_5 .......... ~ ...... ~ .......... ND ............. N~ ......... N~D ....... N~D - MW16-100 100 ND ND ND ND ND · ND MW18-105 1~-' ....... N~ ...... MW-18 7/17/02 - -~_~:1~ ....... -1-~- ......... N--D ....... N~D ...... ~- ...... ~i-D ..... :--~ ...... ND -- I MW18-115 115 ND ND ND ND -: ..... -!~- ..... ~ ..... ' MW~-I:[7- ...... 11~7--: ......... N--D .......... -N~ ....... ~E) ....... ~-I~ ........... ~-.2'""--- ~- ..... ! I I E2C Remediation, LLC T4-1 · ! Projec~ Number 1801BK04 September30, 2002 I TABLE 7 SUMMARY OF SOIL ANALYTICAL DATA I MR. FAST SERVICE STATION 600 Brundage Lane Bakersfield, California I July 9- 17~ 2002 _ ID DATE SAMPLE ID (feet bgs) ...................... J ...................... J ............... ~'~ .............. I ...................... I ..................... I VE6-35 35 ND ND ND ND ND ND VE-6 7/9/02 ~6~ .............. 3~- .... ~ ..... ~-i~ ...... -N~ .......... -J~ ........... -N-I~ ....... ~D ND VE7-35 35 ND ND ND ND ND ..... ND VE-7 7/9/02 ............................... ND .......... ND- ~ ..... ND ......... ND ....... ND ND--- I' VE7-39 39 VE-8 . 7/10/02 VE8-40 40 ND ND ND ND 0.2 ND VE8-43 --~---~-3--' ....... ~-D-''¥ ....... ~q~'. ........ ND ........ -N~ .... 0.2 ND VE9-45 45 ND ND ND .ND ___0.5 ..... ND I VE-9 7/10/02 VE9-47 ...... 4--7 ............. ND ........ ND ....... ND- ........ ND¥ 0.-4- ND NOTES: Only those samples submitted for analYses are listed. B = Benzene I bgs = below ground surface E = Ethylbenzene mg/Kg = milligrams per kilogram (equivalent to parts per million) i MtBE = Methyl Tertiary Butyl. Ether ND = Below Practical Quantitation Limits: BTEX-0.1 mg/Kg, TPHg-0.05 mg/Kg; and MtBE-0.1 rog/Kg r' = Toluene TPHg = Total Petroleum Hydrocarbons as Gasoline I = Xylenes X Total ! I E2C Remediation, LLC T4-2 Project Number 1801BK03 Seotember 30, 2002 APPENDICES Appendix A Third Quarter 2002 Groundwater Purge Data Sheets Appendix B Third Quarter 2002 Analytical Laboratory Report Appendix C Boring Logs with Well Construction Details Appendix D Soil Analytical LabOratory Report E~C Remediation, LLC Appendices I Pro_iect Number 1801BK03 Se~)tember 30. 2002 APPENDIX A Third Quarter 2002 Groundwater Purge Data Sheets I E~C Remediation, LLC Appendix A £2C Rem¢~liati°n' LL C aro,,,,d.,ate. Scientist., E,,,,i~o,,r.e;,talCo~.~.~.. Water Quality Sampling Record Telephone: (661) 831-6906 / Facsimile: (661) S~PLEIO/WELL~: ~bU- j DEPTH TO WATER: ~, E~CREM. PROJECT~: /~O ~ ~ ~'~ ' TOTAL DEPTH OF ~ELL: DATES~PLED:.. 'O~-- ~ -- ~ ~ CASING VOLUME: S~PLEDBY: . ~ ~ ~ ~ O PURGE METHOD: Well Capacky: 2" ~ O. 16J~ Ballon/linear S~MPLED AT: FT. FINAL DEPTH TO ~ATER: FT. ] ~SlNG VOLUMES = · ~ ' ~ ~{' GALS. NOTES: i~'~'Rcm¢~;~tzb~2~/'f'~' · Water Quality Sampling'Record Grouno~ater Sdent~$ : ~mmtal Co~ltan~ 53~W~mereD~,Suite 105; ~ke~d,~lifomia 0331~ and Well Development Data Tel~hone: (661)831-6906 / Fa~imil~ (661)831-6134 E~C~.PROJ~: /~0 ~ ~ ~g .. ' TOTALD~mOFWEL~ ~ el, l 0 Well Capadt~ 2". 0.1632 gall~/rmear f~t 4" - 0.6528 gall~be~ NOTES: 'E2CRemedia 'on, £ LC . Gro'undwater Scientists: E~vironmmtal Con~ltant~ ' Water Quality Sampling-Record S300W~m,r, D~v,. $.it, ~0S: ~.~,~'.~. C,~to~,~, ~ ~ and ~eli Development Data Td~hone: (661)~1-6906 / Fa~mil~ (661)8~1.6~4 ~oJ~c~E: ~. ~~. ~O~ ~ z/ .. '-..-~ .... ..~ ; :, ""' , ' '; .... . ;v"'~':~4PURGE~E~'..'. '""-:',;" ~ 13o~ ,, " ~ 70,1 ~-~ -. '.~ .. - . -: . ; . - . . ' -~-...'-~'-:. · .;~-'.~';.:..;' . - ...;. ~., .= . .' .':':.?.~.~ WaI ~Dcit~ 3'. 0.16~ Call~/rmear 4' - 0.6538 ~allon/~e~ 6' - 1.4688 8al~r~ .. . . .: . .~' · .. . ,:. .. SA~D AT: ~. F~L DEPTH TO WATE~ ~. 3 ~Sb~O VOLmIES = ~' ~ ~ GALS. NOTES: ' ' - ' Water Quality Sampling Reeord Groundwater ~cienti~ : ~vironmental Comultants ssoo Wo~m~. D~. S.~t~ 10S: ~k~,fidd. C~,fomb 9S3 ~3 and Well Development Data Telephone: (661) $~ 1-6906 / Fac~imiM {661) ~OJ~E: ~. ~ DATES~D: ~-- ~1 -- · -..-~ ... W~ll ~dt~ ~' · O. 163 6'- 1.4685 ~al~r f~t ,~MPLEDAT: .. FI~'DEPTHTOWATEE .. . ,~VoL~%JES= ~, ~ 0 GALS. NOTES: E.~CR¢"ne,~'oa. ~'.LC Water Quality Sampling Record GroundWater Scientists: Environmental Consultants 5~00 Woodmere Drive. Suite ,05: Bakersfidd. C~lifomia 9~1~ and Well Development Data Telephone: (661) 831-6906 / Facsimile: (661) 831-6234 ~c~.e.o~#: /~'O ~ B/:'d.~ .. 'TOT^~O~mOFWEtt: ~-~ .- pROJECT NAME: /7~/~' /:'.,,~..~'7--' V,/ELLDIAMETER; -.....~ . . · "~'' . '~ '..... :[: ...~. ...'...... ~ ...... -('='-.~. . X.~-..!'.~- DEPTHI (~)I (CALl · ~e~l Capacity:. 2'. O. 1632 gallon/rmear foot 4'. O.65~8 gallon/rmear loot 6'- !.4688 8allon/linear loot .. . . .: . - . .. SA,',tPLED AT: FT. FINAL DEPTH TO ~/ATER: FT. 3 CASbNG VOLUkt£S = --~, ~ 3 GALS. NOTES: ' ., ' 'E~CReme~'azz'On; aroundwater$cientiSts: Enviro~me~talConsultants' Water Quality Sampling Record 5S00 Woodmere Driw. Suite 105; Bakenfidd, California SSS Is and Well 13evelonmenr Data · Telephone: (661) 831-6906 / Facsim~o- (661) 831.6')34~ ' ~ - E:~CREM. PROJECI'#: /~7~)~ ~i~"O'~ 'TOT/Q. DEPTH OF WELL: ~"~_ jO DATE SAMPLED: O C~ -- ~l -- ,~) ,,~ CASINO VOLUME: SAMPLED BY: ~_~&4-~ ~g PURGE METHOD: 'm~ wT,~,~ I RATE I OJ~.VOL I W[LLVOL fro) (U,',aTS) (mmhos/cm) (COLOR. TURBIDfi'Y. ETC) DEemI ~M)II(c~) . V/ellCapadty: .~". O. 163~gallon/l~neariroot 4' - O.6525 8allon/rmear loot 6'- 1.4659 gallon/l~.arireot I SAMPLED AT: FT. FINAL DEPTH TO WATER: FT. 3 CASING ¥OLUMES = ~ - ~'~ ~ GALS. NOTES: . . .. . ./_~CWater Quality sampling Record Groundwater Sd~ntist$ : Environmental Consultants 5300 Woodmere Drive. Suite 105: Bakersfield, California 93313 and Well Development Data Telephone: (66 I) 83 !.6906 / Facsimil~ {661) 831-6234 ~/'~.t#: nl V.,'- '7 ' ' Da,re'rOW^Tm L../,)..2..-0 E,¢Rr~.PROJECT#: /~0 ~ B l~d~' · TOTALDEPmOFWL:LL: 5 3 --Z'I PROJECT NAME: ,~'/'~, F/~.,.~7-' ' ~ DIAMETER; ~:~ ! ! DATE SNVlPLED: ~)8-- - ,O.2 c~G vottw~: ' 1, Y ? ~ ~ '= --. ,... .' . .."" · '~ .'..- :5 ...'-- ..... "'.'.''. :¢ ..... ~'-='; "'",' " ' ' :':'-Q;-~":-f-'-" m~E I,'~*r,E I ~TE I CU~. VOl. WELt VOl. ~ Naars) (mmho~c~ (CO[Oe. mP, aollY. Ere) /~/~' ~, ,, ~ ' '7~. 3 K'.~'~ ~./~, ~ ~ '" I ~1~ . ~, ,~ /¢ 7o.¥ &,.3z..-0,/3' c/e~,- . ~/,~/t-t- /¢/5'- .~, ~ ~ ~,q.~ ¢.~0 0,/$ ,, ,, Well Capacity:. 2". 0.1631 gallon/linear Dot 4'. 0.6~25 8allon/rmear foot 6'. 1.468 $ 8alice/linear feot FT. FINAL DEPTH TO WATER: FT. 3 C~Sb~G VOLU,~,IES = % , (o ~ GALS. SAMPLED AT: NOTES: C ttem ediazz'o n, Tel~hone: (66 I) 83'1-69~ / Fa~imil~ (66 I) 831-6134 4'. 0.6528 ~allo~ear S~LED AT: ~. F~L DEPTH TO ~ATE~ NOTES: £.~C J?emediati° n., LL C - 5300 Woodmere Drive, Suite 105; Bakersfield, California 93313 and Well Development Data Telephone: (66 I) 831.6906 / Facsimile: (66 I) 831.62.34 SAMPLE ID / WELL #: J~'J/~'~' ' ' DEP1'H TO WATER: ~'J,/~ / E~C REM' PROJECT #: DATE SAMPLED: (-~ Well Capacky: 4". 0.6528 gaJlon/Jinear fOOt ... . . . ... . .. . :..,.-=-.... .:~ .. .... ,..~.. ~,,PLED AT: FT. FINAL DEPTH TO WATER: FT. ~ CASING VOLU.,IES = ~.~ ~ALS. NoTEs: I " £2C/~emed[at[ozz' .Z,Z, C " aro,,,,a~,,t,,.s,;e,,t;,,.. E,,,.;ro,,,,,*",,;Co,,,,,;,~;,,~ Water ©uality Sampling Record I 5300 Woodmere Drive, Suite IO5; Bakersfield, California 93313 and Well Development Data Telephone: (661)831.6906 / Facsimile: (661)831-6234 SAMPLE ID / WELL #: )~ kY-( 0 DEPTH TO WATER: m E)C REM. PROJECT#: //~:~(-~ l /~ ~' C)',~' TOTAL DEPTH OF WELL: c~.,~,-Ob PROJECT NAME:.. ~ /Z. F/~-..~-" WELL DIAMETER;I m D^tES~',~PLED: .O~'.-- .ti _ ~j CAS~,~GVOLU.E: SAMPLED I~Y: ~L _ fl.~ PURGE METHOD: m · :'.'" ,'.":':PURGE CHARACTERISTICS..'. "." '.'., TE~IP pH SEC RE~RKS I l~' ,' ,, ~ 7o,F &~J~ O,/~ I~ y ,, ,, y 70, ~ ~,TY O, ro m ,I Well Capacity: ~"- O. 1632 ~allon/linear foot 4"- 0.6528 gallon/linear foot 6"- 1.46S8 gallon/linear/eot I .- ' ' '-' · ': · · '~ "' · '- '-': ' .' '-" '. S&~1PLED AT: FT. FINAL DEPTH TO WATER: FT. ] CASING VOLUMES = ~, ~ 3 GALS. NOTES: I I ~ £aC]lemediation, 53~ Woodmere Drive, Suite 105; Bake~field, California 93313 and Well Development Data Telephone: (661)831.6906 / Facsimile: (661)831-6234 S~PLE mD / WELL ~: ~ -) / ~ ': DEPTH TO W~TE~: m E~c~m.v~oJ~cTm / ~o~ ~ ~ ~ 3 TOTXLDEP~HOFWELL: m PROJECT N~IE: ~ ~ ~ ~ WELL DI~ETER;. S~IPLEDB~; ~* - ,~0 PURGE METHOD: ::~3~y,;z~:~.ck:PURGE;CHA~OTERISTICS~..?f?:?,~...y';;. TEMP pH SEC I. Well Capacity: ]'- O. 163~ g~llon/linear fora 4"- 0.6528 gallon/linear foot S&~IPLED AT: FT, FINAL DEPTH TO WATER: FT, 3 CASING VOLU.~IES = ~ · ~ ~ GALS. NOTES: E2CRe"neckiztiOn, LLC " Water ©uality Sampling Record Groundwater Scientists: EnvironmentaI Consultants 5300WoodmereOrive. Suite 105; Bakersfidd. Califomia 93313 - and Well Development Data Telephone: (661)831-6906 / Facsimil~ (661)831-6134 SAMPLE ID / W'c-LL #: ~ L.)- 12. DEPm TO WATER: .2. VOLUME:' SAMPLED BY: ~___~-~'~ ' ~C~ PURGE MEIHOD: --..... .. : .." '' . ' '. . :~-.-:..:-:-:PURGE CHARaCtERISTICS'..-..,/-..:'-.I. T~, . J ~ sic - ~xs m~[ ~x~ ~T~ I CU~.VOt ~tCVOt D~gm (a'~)I (C,~I O'tZ~ 'l~ ,~ fi ~,~ II .. .. -.~ . . . ~//ell Capacity: :1'. O. 1631 gallon/linear loot 4" - 0.65111 gallon/l'mear l'oot 6'- 1.4688 gallon/rmear ~eot : AT: FT. FINAL DEPTH TO WATER: FT. 3 CASING VOLU,~,IES = I ~ ' ~ GALS. SA,MPLED NOTES: ~ '.i~2CJ~emediation,. Z,/_,C Water ©uality Sampling Record Grouno~vater Scientists: Environmental Consultants I 5300 Woodmere Drive. Suite 105; Bakersfield, California 93313 and Well Development Data ' Telephone: (661) 83 !-6906 / Facsimil= (661) 831-6234 I SMtPLEID/WE~#: ~L~I ~ OEPmTOW^TI~: . ~/7-~'~ ! E=CREM. PROJ~'q'#: / ~ l B ~'O'g . ,. · TOTAL DEPTH OF Wl~LL: i I PROJECT NAME: /~/~. /:/']--...~'T" WELL DIAMETER: ' I SAMPLED BY: ~t~ - ~-0 PURGE ML:'tHOD:. .....: .. .... -.'-- -L .... :-: L..-~ .... -.-...~ .~. TIME INTAI(E DEP'ITI J (C, PM) RAT[ CU~.(CUU.jVOL "g/ELL ~ VOl.~ JtlNIT~ Jmml'm/e. mJ (COLOR, 'II.IRSIDI1~, ETC.) '1 o q S' z- ,, ,, "3 -73.0 6,/f(' 0.37 I I .,~ .. . . . . ? . - . - -. -...--:' : - ..;~....';.:..- . -.-~' . V/dl Capacity: 2" · 0,1632 8allon/l'mear !ool 4"- 0.6528 lallon/r~ne;.r foo~ I 6'- 1.468S galloMrmear feet ~ . . .: ... .'- , . . ,:. . .· .:. .: -..~ .:...: : -.'-.~..' . '.- ..-.;~.. '" ': "; NOTES: I 'E2cRem e 'agon, L £C arounaS~ater$cle~tist': F.o~iro~meotol¢onsultant~ Water Quality Sampling Record 53~ W~me~ Drive, S~te 105; ~k~d, ~lifomia g~313 and Well Development Data T&~hone: (661)83 I-6g~ / Fa~imil~ ~661)831.6~34 E~C ~. P~JE~ ~: /~O~ ~d~ · TOT~ D~mOFWELU. ~OJ~T ~E: DATE ~PLE~ .-..-: ... ~ -. -- . -~ .... ;;: ..-..~ .... -~ ..-: '.. j~ ;f ...... ....:-...... ~ · . ;~.~:.~'.:.f.~.-. . :~'.' (-;~;PU~GE ~E~'..'- "~-'" .~"- ~ ~ SEC ' ~s ~IE ~ J ~TE I ~' ~ '~LL ~ ~ ~ (~) (COL~ ~.ETC) 4" - · .. .... · .. , ,:. . ...< .: -.., :,:- ..:: -~? .L '-::. '" ': '~ ..... ?'-~":'~'.r ~. F~L DEPTH TO WATE~ ~. 3 ~Sb~ VOLUMES = ~ ' ~ ~ ~LS, NOTES: aroundwater$¢ientist$; £nvironmentalConsultant,' Water Quality Sampling Record -' 53~ ~oodmere Drive, Suite 105; Bake~field, Calif0rni~ 93313 and Well Development Data T~lephone: (661) ~31-6906 / Facsimile: (661) 831-6234 E~C REM. PROJECT PROJECT N~E: S~'PLED BY: :~.'" '-':';'.'PURGE CHA~TERIST CS..'. :' .- .... TE~ Well Capacily: ~". O.I 4"- 0.6~2~ Ballon/linear 6". 1.468~.~llon/linear [eot .'. .. · . ,.. . '. . · . S~MPLED AT: FT. FINAL DEPTH TO WATER; FT. ~ ~SING VOLUMES = GALS. NOTES: £2 C ~ em ectiatio n, ./3LC aro,,,,&~terS, ie, t~,t, , E, vir,,,,.Aa~Co~,un~t, Water'~uality Sampling Record 53~WoodmereDrive, Suite 103; Bake~field, California 93313 and Well Development Data Telephone: (681)831-6908 / Facsimile: (881)831-8134 . E~CREM, PROJEC~: '/~ ~ ~'~ TOTAL DEPTH OF WELI: ~ ,~ DATE S~MPLED: ~ ~ '-- ~ -- ~ ~ CASING VOLUME: -." ,'.'.;'.'PURGE CHA~TERISTICS ' .'.-'" TEMP pH SEC RE~RKS ThOlE INTAKE ~TE CUM. VOL WELL VOL (~ (UNITS) (mmhos/cm] (COLOR, TURBIDITY. ETq DEPTH (GPM) (GAL) PUMPED 4"; 0.652S gallon/linear [oot ~". 1.46SS gallon/linear S~IPL~D AT: FT. FINAL DEPTH TO WATER: FT. ~ CASING VOLUMES ~ ~, ~ ~ GALS. NOTES: .! 'i. E2Ctlem ecfiation,/, LC 5300 V/oodmere Drive, Suite lOS; Bakersfield. California 93313 and Well-Development Data Telephone: (661)831;6906 / Facsimil~ (661)831-6234 . ~Ca~dt~ 2". O. 1632gall~/Fmearf~ 4' - O.6528 gall~Fmear 5~%~LED AT: ~. FI~ DEPTH TO ~ATE~ ~. 3 ~SSNG VOLUMES = ( ~ ~ £2CRemediation, Z, LC Groundwater$cienti'~t,; EnvironmentalConsultant$ . 'Water Quality Sampling Record 53oo Woodmere Dr~ve, S.~t~ ~O~; ~k~. C~ro~n~ ~ and Well Development Data Telephone: (661)831-6906 / Facsimile: (661)831-6234 5~PLE ID / WELL ~:' . ~'~-- t ~ b ' DEPTH TO WATER: E~CRE,M. PROJECT~: J ~0 l ~ ~ ~ TOTAL DEP?H OF WELL: PROJECTN~ME: ~ ~ WELL DI~ETER; DATE S~IPLEO: ~J ~] O ~ CASING VOLUME: T~M~ INTAKE ~TE CUM. VOL WELL VOL (~ (UNITS) (mmhos/tm} (COLOR, TURBIDITY, ETC.J DEPTH (GPM) (GAL) PUMPED . Well Capacity: ~"- O. 16~] gallon/linear 4". 0.652S gallon/linear (oot. 6"- 1.468S gallon/linearfoot ... . ... ' . . . .~..,- '. .:,.. .. . . '. , .-~'~k.. SAMPLED AT: FT. FINAL DEPTH TO WATER: FT. t ~SlNG VOLUMES = GALS. NOTES: EaC Remediation, ZL C Groundwater$cientist$: £nvironmentalConsultant$ Water Quality Sampling ReCord 5300WoodmereDdve, Suite 105; Bakersfield, California 93313' ·and Well Development Data Telephone: (661)83.1-6906 / Facsimile: (661)831.6:)34 ' ' " sAMpLE iD / WELL #: ,~V~.~)- I"'~ -~ DEPTH TO WATER: S~ , c[ 3 E~C REM. PROJECT ~: [ ~O [ ~ ~ o ~ TOTAL DEPTH OF ~ELL: ~ ~ · ~ ~ PROJECT N~ME: ~ ~ WELL DI~ETER;, ~" :..'.' .-.'.:':PURGEiCHA~CTERISTICS. '. "'." "- TEMP pH SEC RE~RKS ~u~ 'NTAKE IDEPTH (GPM}~E I CU,U. VOL I WELLVOL(GAt) PUMPED (~ (UNITS) (mmhos/cm) (COLOR. TURBIDITY, ETC.) Well Capacity: ~. O. 1632 gallon/linear fool 4'- 0.6528 gallon/linear foot 5&MPLED AT: FT. FINAL DEPTH TO WATER: FT. ~ ~SlN¢ VOLUMES = ] 0- ~ ~ GALS. NOTES: I £aCRemed[aU'on, 6roundwater$cientist$: EnvironmentalConmltant$ 'Water ~uality Sampling Record 53~ Woodmere Drive, Suite 105; Bake~field, California 93313 and Well Development Data Telephone: (66 I)'831-6906 / Facsimile: (66 I) 831.6134 E~cREM. PROJECT~: I ~018 ~0 3 TOTAL DEPTH OF WELL: J I ~ , ~0 - PROJECT N~IE: ~ ~ WELL DI~ETER;, ~" T~IE iNTAKE ~TE C~M. VOk ~LL VOL (~ (D~ITS) (mmko~/~m} (COLOR, T~RBI~IT~, DEPTH (GPM) (GAL) PUMPED 10~5 ' 117~ I,O :0 7V, q 6.77 0.57 5:clo.d~ b~o, no Well Capacity: ],. O. 163] gallon/linear foot 4"- O.65~8 gallon/linear foot S~%mLED AT: FT. ~NAL DEPTH TO WATER: FT. 3 ~S~N6 VOLUMES = ~ - O'~ gALS. NOTES: ! i- i Pro_iect Number 1801BK03. September 30. 2002 I I i '1 I I I ~ APPENDIX B I Third Quarter 2002 Groundwater Analytical Laboratory Report I i I I I i I I I E~C Remediation, LLC Appendix u Client Name E2C Remedialion, LLC 661.831.6906 fax 661.831.6234 Analysis Requested Sample Matrix Project Name: ~L ..f'~s~F- ~]r~_que0us Client Address: 5300 Woodmere Drive, Suite 105, Bakersfield, CA 93313 Soil P?oject Manager: . "~ I~.-L /.~,¢~ ~ Sample Date . sample Time Sample Description and Container Type Comments 3~z lb ~ o ~w- 7 Rel'inquished By:' ~~ /~ Date: ;,:,/,-~ [ Relinquished By: Date: Halcyon LabOratories, nc. Laboratory Report Certification # 1920 CLIENT E2C Remediation, LLC Project Name: Mr Fast 5300 Woodmere Drive, Suite 105 Bakersfield, CA 93313 Matrix: Aqueous Sampled by: Gabriel Halcon TESTS: TPH Gas by EPA 8015M TPHg Analysis: 8/30/2002 Date of Report: 9/3/2002 Units: ug/L Sample#: 2K2-3564 2K2-3565 2K2-3566 2K2-3567 2K2-3568 Date Sampled: 8/22/2002 8/22/2002 8/22/2002 8/22/2002 8/22/2002 DL ug/L Sample Description: MW-la MW-I 7S MW-15S MW-14 MW-19 TPH Gasoline ND ND ND 2,040 2,120 50 Surrogate Recovery % 92.7 92.8 94.1 97.1 99.8 Sample #: 2K2-3562 2K2-3563 Date Sampled: 8/22/2002 8/22/2002 DL ug/L Sample Description: MW-12 MW-13 TPH Gasoline 28,000 137,000 10,000 Surrogate Recovery % 91.8 90.3 Sample #: Date Sampled: DL ug/L :Sample Description: TPH Gasoline SurrOgate Recovery % ND - NOn-Detect at given DL NA - Result not available Principal Analyst: Phil Acosta I 'Halcyon Laboratories, :Inc. EPA 8260B 'Laboratory Report Water Sample Results in ug/L Certification # 1920 I CLIENT: EeC Remediation, LLC 5300 Woodmere Drive, Suite 105 I Bakersfield, CA 93313 Project ID · . Mr Fast I Report Date" 8/28/2002 I Sample ID · 3562/MW-12 I Analyte Result Method RL Units I 5 Oxygenates t-Butanol (TBA) Tert-Butyl Alcohol ND 2.5 ug/L Methyl Tert-Butyl Ether (MTBE) ND 0.5 ug/L I Diisopropyl Ether (DIPE) ND 0.5 ug/L Ethyl Ted-Butyl Ether (ETBE) ND 0.5 ug/L Tert-Amyl Methyl Ether (TAME) ND 0.5 ug/L I BTEX Components I Benzene ND 0.5 ug/L Toluene 685 0.5 ug/L Ethylbenzene 1,010 0.5 ug/L i m & p Xylenes 2,700 0.5 ug/L o Xylenes 1,580 0.5 ug/L Internal Standards Results % Recovery Benzene, fluoro 50.0 100% Benzene-d5, chloro- 50.0 100% 1,4-Dichlorobenzene-d4 50.0 100% I Surrogate Standards ' I Methane, dibromofluoro- 56.2 ' 112% 1,2-Dichloroethane-d4 52.7 105% Toluene-d8 53.3 107% i p-Bromofluorobenzene (BFB) 48.9 98% Halcyon LaboratOries, Inc. EPA 8260B Laboratory Report w. ter sample Results in ug/L CertificatiOn'# 1920 CLIENT: EzC Remediation, LLC 5300 Woodmere Drive, Suite 105 Bakersfield, CA 93313 Project ID · Mr Fast Report Date · 8/30/2002 Sample ID ' 3563/MW-13 Analyte Result Method RL Units 5 Oxygenates ." t-Butanol (TBA) Tert-Butyl Alcohol ND 200 u~/L Methyl Tert-Butyl Ether (MTBE) ND 40 ug/L Diisopropyl Ether (DIPE) ND 40 ug/L Ethyl Tert-Butyl Ether (ETBE) ND 40 ug/L Tert-Amyl Methyl Ether (TAME) ND 40 BTEX Components Benzene ND 40 ug/L Toluene !,490 40 ug/L Ethylbenzene 890 40 ug/L m & p Xylenes 1,660 40 ug/L o Xylenes 1,240 40 ug/L ! Internal Standards Results % Recovery I Benzene, fluoro 50.0 100% Benzene-d5, chloro- 50.0 100% 1,4-Dichlorobenzene-d4 50.0 100% I Surrogate Standards I Methane; dibromofluoro- 53.0 :[06% 1,2-Dichloroethane-d4 5~..0 102% Toluene-d8 49.9 100% i p-Bromofluorobenzene (BFB) 46.2 92% Halcyon Laboratories,~ ]:nc. EPA 8260B Laboratory Report Water Sample Results in ug/L Certification # 1920 CLIENT: E2C Remediation, LLC 5300 Woodmere Drive, Suite 105 Bakersfield, CA 93313 Project ID ~' Mr Fast Report Date · 8/30/2002· Sample ID · 3564/MW-18 Analyte Result Hethod RL Units 5 Oxygenates t-Butanol (TBA) Ted-Butyl Alcohol ND 2.5 ug/L Methyl Tert-Butyl Ether (MTBE) ND 0.5 ug/L Diisopropyl Ether (DIPE) ND 0.5 ug/L Ethyl Ted-Butyl Ether (ETBE) ND 0.5 ug/L Tert-Amyl Methyl Ether (TAME) ND 0.5 ug/L BTEX Components Benzene 36 0.5 ug/L Toluene ND 0.5 ug/L Ethylbenzene 4.0 0.5 ug/L m & p Xylenes 3.7 0:5 ug/L o Xylenes 0.8 0.5 ug/L I .Internal Standards Results % Recovery I Benzene, fluoro 50.0 100% Benzene-d5, chl°ro- 50.0 100% .1,4-Dichlorobenzene-d4 50.0 100% I Surrogate Standards I Methane, dibromofluoro- 54.3 109% 1,2-Dichloroethane-d4 52.3 105% Toluene-d8 51.8 104% I p-Bromofluorobenzene (BFB) 50.6 101% i I HalCYon Laboratories~ Tnt. EPA 8260B Laboratory Report Water Sample Results in ug/L I Certification # 1920 I CLIENT: E2C Remediation, LLC 5300 Woodmere Drive, Suite 105 i Bakersfield, CA 93313 Project ID · M r Fast I RePort Date" 8/30/2002 i Sample ID · 3565/MW-17S I Analyte Result Method RL Units i 5 Oxygenates .- t-Butanol (TBA) Tert-Butyl Alcohol ND 2.5 ug/L Methyl Tert-Butyl Ether (MTBE) ND 0.5 ug/L I Diisopropyl Ether (DIPE) ND 0.5 ug/L Ethyl Tert-Butyl Ether (ETBE) ND 0.5 ug/L Tert-Amyl Methyl Ether (TAME) ND 0.5 ug/L I BTEX Components I Benzene ND 0.5 ug/L Toluene ND 0.5 ug/L EthYlbenzene ND 0.5 ug/L I m & p Xylenes ND 0.5 ug/L o Xylenes ND 0.5 ug/L I Internal Standards Results % Recovery I Benzene, fluoro 50.0 100% Benzene-d5, chloro- 50.0 100% 1,4-Dichlorobenzene-d4 50.0 100% I Surrogate standards I Methane, dibromofluoro- 56.9 114% 1,2-Dichloroethane-d4 54.3 109% Toluene-d8 53.0 106% I p-Bromofluorobenzene (BFB) 47.1 94% Halcyon Laboratories,. :[nc. EPA 8260B Laboratory Report Water Sample Results in ug/L Certification # 1920 I CLIENT: E2C Remediation, LLC 5300 Woodmere Drive, Suite 105 i Bakersfield, CA 93313 Project ID · Mr Fast I Report Date" 8/30/2002 I Sample ID · 3566/MW-15S I Analyte Result Method RL Units 5 Oxygenates I t-Butanol (IBA) Tert-Butyl Alcohol ND 2.5 ug/L Methyl Tert-Butyl Ether (MTBE) ND 0.5 ug/L I ' Diisopropyl Ether (DIPE) ND 0.5 ug/L Ethyl Tert-Butyl Ether (ETBE) ND 0.5 ug/L Tert-Amyl Methyl Ether (TAME) ND 0.5 ug/L I BTEX Components I Benzene ND 0.5 ug/L Toluene ND 0.5 ug/L Ethylbenzene ND 0.5 ug/L i m 8/p Xylenes ND 0.5 ug/L o Xylenes ND 0.5 ug/L I Internal Standards Results % Recovery I Benzene, fluoro 50.0 .100% Benzene-dS, chloro- 50.0 100% 1,4-Dichlorobenzene-d4 50.0 100% I surrogate Standards I Methane, dibromofluoro- 55.3 111% 1,2-Dichloroethane-d4 54.3 109%' Toluene-d8 51.7 103% i p-Bromofluorobenzene (BFB) 47.3 95% I ~ Halcyon Laboratories, :Inc. ' EPA 8260B Laboratory Report · WaterSample Results in ug/L ICertification # 1920 I CLIENT: E2C Remediation, LLC 5300 Woodmere Drive, Suite 105 i Bakersfield, CA 93313 Project ID' Mr Fast. I Report Date · · 9/4/2002 i . Sample ID · 3567/MW-14 Analyte Result Method RL Units 5 Oxygenates t-Butanol (TBA) Tert-Butyl Alcohol ND 2.5 ug/L Methyl Tert-Butyl Ether (MTBE) ND 0.5 ug/L Diisopropyl ·Ether (DIPE) ND 0.5 ug/L Ethyl Tert-Butyl Ether (ETBE) ND 0.5 ug/L Tert-Amyl Methyl Ether (TAME) ND 0.5 ug/L BTEX Components Benzene 19 0.5 Ug/L Toluene ' 13 0.5 ug/L Ethylbenzene 21 0.5 ug/L m & p Xylenes 48 0.5 ug/L o Xylenes 35 0.5 ug/L Internal Standards Results % Recovery Benzene fluoro 50.0 100% Benzene-dS, chlor° 50.0 100% 1,4-Dichlorobenzene-d4 50.0 100% Surrogate Standards , I Methane, dibromofluoro- 53.7 107% 1,2-Dichloroethane-d4 51.8 104% Toluene:d8 51.7 103% .. p-Bromofluorobenzene (BFB) 48.2 96% .Halcyon .Laboratories, :[nc. EPA 8260B Laboratory Report Water Sample Results in ug/L Certification # 1920 I CLIENT: E:C Remediation, LLC 5300 Woodmere Drive, Suite 105 I Bakersfield, CA 93313 Project ID' Mr Fast I Report Date: 8/30/2002 ISample ID.' 3568/MW-19 I Result Method RL Units Analyte i 5 Oxygenates t-Butanol (TBA) TeK-Butyl Alcohol ND 2.5 ug/L Methyl Tert-Butyl Ether (MTBE) ND 0.5 ug/L I Diisopropyl Ether (DIPE) ND 0.5 u~l.., Ethyl Tert-Butyl Ether (ETBE) ND 0.5 ug/L Tert-Amyl Methyl Ether (TAME) ND 0.5 ug/L I BTEX Components I Benzene 18 0.5 ug/L Toluene 10 0.5 ug/L Ethylbenzene 19 0.5 ug/L I m & p Xylenes 45 0.5 ug/L o Xylenes 42 0.5 ug/L I Internal Standards Results % Recovery I' Benzene, fluoro 50.0 ~.00% Benzene-d5, chloro- 50.0 100% i 1,4-Dichlorobenzene-d4 50.0 100% Surrogate Standards I l[ Methane, dibromofluoro- 53.9 108% .~· 1 2-Dichloroethane-d4 52.2 104% Toluene-d8 52.3 :1.05% I P-Bromofluorobenzene (BFB) 47.1 94% Client Name 'E2C Remediation, LLC 661.831.6906 fax 661.831.6234 Analysis Requested Sample Matrix Project Name: [V~.. :p,q,¢ 'V' [-~ 'Aqueous Client Address: 5300 Woodmere Drive, Suite 105, Bakersfield, CA 93313 Project Manager: 1~ '~ ~.k.... Llg~J-%' o-'"'-~ ~ Soil Sampler. Name: ~--~..G r~,¢:c._- t~O~ ~ Acidified Sample Date Sample Time Sample Description and Container Type Comments ~'2 ~o~ 0933 ~--t~ ~'~,- ~o~ 005 ~¢ - 13 105-5 -I~ i133 - 175 ~ Relinquished By: O(~3.~d,,, ~ Date: /,L P, elinquished By: Date: / --~Rece i v ed By: ./i~,,...K.//J Da t e: ~,~z/z. Re ce i ved By: DA re: I Halcyon Laboratories, Inc. Laboratory Report 'l Certificat!on_# 1920 CLIENT EzC Remediation, LLC Project Name: Mr Fast .. I 5300 Woodmere Drive, Suite 105 Bakersfield, CA 93313 Matrix: Aqueous Sampled by: Gabriel Halcon I TESTS: TPH Gas by EPA 8015M TPHg Analysis: 8/30/2002 Date of Report: 9/3/2002 I Units: ug/L I Sample #: 2K2-3550 2K2-3551 2K2-3552 2K2-3553 2K2-3554 2K2-3555 2K2-3556 Date Sampled: 8/21/2002 8/21/2002 8/21/2002 8/21/2002 8/21/2002 8/21/2002 8/21/2002 DL ug/L Sample Description: Tblank MW-3 MW-5 MW-6 M%V-2 M3,V-4 MW-10 I TPH Gasoline ND 90 90 60 390 250 50 50 Surrogate Recovery % 83.8 82.1 97.3 99.8 89.5 90.7 89.9 I Sample #:. 2K2-3557 Date Sampled: 8/21/2002 DL ug/L I Sample Description: MW-9 i TPH Gasoline 50 50 i Surrogate Recovery % 90.8 Sample #: 2K2-3558 2K2-3559 2K2-3560 2K2-3561 I Date Sampled: 8/21/2002 8/21/2002 8/21/2002 8/21/2002 DL ug/L Sample Description: MW-I IR I~gqq-I MW-7 MW-8 I TPH Gasoline 108,000 42,000 94,000 113,000 10,000 I Surrogate Recovery % ' 90.1 90.8 100 98.1 DL = Detection Limit I ND - Non-Detect at given DL NA - Result not available Prme~a Ana ys ~ Acosta I I Halcyon Laboratories, Inc. EPA 8260B Laboratory Report Water Sample Results in ug/L Certification # 1920 I CLIENT: E2C Remediation, LLC 5300 Woodmere.Drive, Suite 105 i Bakersfield, CA 93313 Project ID · · Mr Fast I Report Date ' 8/27/2002 i Sample ID · 3550/Tblank · Analyte Result Method RL Units 5 Oxygenates t-Butanol (TBA) Tert-Butyl Alcohol ND 2.5 ug/L Methyl Tert-Butyl Ether (MTBE) ND 0.5 ug/L DiiSOpropyl Ether (DIPE) ND. 0.5 ug/L Ethyl Ted-Butyl Ether (ETBE) ND 0.5 ug/L, Tert-Amyl Methyl Ether (TAME) ND 0.5 ug/L BTEX COmponents Benzene ND 0.5 ug/L Toluene ND 0.5 ug/L Ethylbenzene ND 0.5 us/L m & p Xylenes ND 0.5 o Xylenes ND 0.5 us/L Internal Standards Results % Recovery Benzene, fluoro 50.0 100% Benzene-d5, chloro- 50.0 100% 1,4-Dichlorobenzene-d4 50.0 100% Surrogate Standards Methane, dibromofluoro- 57.4 115% 1,2-Dichloroethane-d4 53.2 106% Toluene-d8 50.9 102% p-Bromofluorobenzene (BFB) 45.0 90% Halcyon Laboratories, Inc. EPA 8260B Laboratory Report Water Sample Results in ug/L Certification # 1920 I CLIENT: E:C Remediation, LLC 5300 Woodmere Drive, Suite 105 i Bakersfield, CA 93313 Project ID' Mr Fast I Rep°rt Date · 8/27/2002 i Sample ID · 3551/MW-3 I Analyte Result Method RL Units 5 Oxygenates I t-Butanol (TBA) Tert-Butyl Alcohol ND 2~5 ugFL, Methyl Tert-Butyl Ether (MTBE) ND 0.5 ug/L i Diisopropyl Ether (DIPE) ND 0.5 ug/L Ethyl Tert-Butyl Ether (ETBE) ND 0.5 ug/L Tert-Amyl Methyl Ether (TAME) ND 0.5 ug/L I BTEX Components i Benzene 2.5 0.5 ug/L Toluene 9.5 0.5 ug/L Ethylbenzene 2.4 0.5 ug/L m & p Xylenes 3.2 0.5 . ug/L o Xylenes 4.7 0.5 ug/L I Znternal Standards · Results % Recovery I~' Benzene, fluoro 50.0 100% -. Benzene-d5, chloro- 50.0 100% 1,4-Dichlorobenzene-d4 50.0 100% I Surrogate Standards i Methanei dibromofluoro- 59.9 120% 1,2-Dichloroethane-d4 55.2 110% Toluene-d8 54,5 109% i p-Bromofluorobenzene (BFB) 48.7 .97% ! Halcyon Laboratories, Inc. EPA 8260B Laboratory Report Water Sample Results in ug/L Certification # 1920 I CLIENT: E2C Remediation, LLC 5300 Woodmere Drive, Suite 105 I Bakersfield, CA 93313 Project ID' Mr Fast I RepOrt Date' 8/27/2002 I Sample ID ' 3552/MW-5 At~alyte Result Method RL Units 5 Oxygenates t-Butanol (TBA) Tert-Butyl Alcohol ND 2.5 ug/L Methyl Tert-Butyl Ether (MTBE) ND 0.5 ug/L Ether ' ND 0.5 ug/L Diisopropyl (DIPE) Ethyl Tert-Butyl Ether (ETBE) . ND 0.5 ug/L Tert-Amyl Methyl Ether (TAME) ND 0.5 ug/L BTEX Components Benzene ! .7 0.5 ug/L Toluene 6.9 0.5 ug/L Ethylbenzene 2.4 0.5 ug/L m & p Xylenes 2.8 0.5 ug/L o Xylenes 3.7 0.5 ug/L Internal Standards Results % Recovery Benzene, fluoro 50.0 100% Benzene-d5, chloro- 50.0 100% 1,4-Dichlorobenzene-d4. 50.0 100% Surrogate Standards Methane, dibromofiuoro- 52.8 106% 1,2-Dichloroethane-d4 54..1 108% Toluene-d8 48.4 97% p-Bromofluorobenzene (BFB) 46.9 94% I ~ Halcyon Laboratories, Inc. EPA 8260B Laboratory Report wa.~r Sample ~r Cedification .# 1920 I CLIENT: E2C Remediation, LLC 5300 Woodmere D~ive, S,,-ite 105 :1 . Bakersfield, CA 93313 Projcct ID' l~r Fast I Rcport Datc' 8/27/2002 i Samp!c ID · 3553,~{W-6 Analyte Result He.%.h~4 RL Units 5 Oxygenates -. t-Butanol (TBA) Tert-Butyl Alcohol ND 2.5 ug/L Methyl led-Butyl Ether (MTBE) ND 0.5 ug/L D,,~o~,ro~j, Ether (DIPE) ND 0.5 Ethyl TerZ-Butyl Ether (ETBE) ND 0.5 ug/L =-' ....... ,, 0.5 Tv, '.-,~.'y'. r.'~mhj I Ether (TAME) BTEX r- ....... Benzene 1.9 0.5 ug/L Toluene 7.6 0.5 ug/L Ethylbenzene 0.7 0.5 u~,% m & p Xylenes 1.3 0.5 ug,rL o XY!enes 4. ! 0.5 ug.,% I 'Internal Standards Results % Recovery I Benzene, flu°to 50.0 100% Benzene-d5, chloro- 50.0 100% I Surrogate Standards I Methane, ~ ~- ....... :: ....... 54.4 .-~ hoe.,.. 1,2-Dichloroethane-d4 53.0 106% Toluene-d8 49.8 100% p-Bromofiuorobenzene ~=~: ~ ~ ~"' i Halcyon Laboratories, Tnc. EPA 8260B Laboratory Report Water Sample ReSults in ug/L 'Certification # 1920 CLIENT: E2C Remediation, LLC 5300 Woodmere Drive, Suite 105 Bakersfield, CA 93313 Project ID: Mr Fast Report 'Date · 8/27/2002 Sample ID · 3554/MW-2 Analyte Result Method RL Units 5 Oxygenates ~ i-Butanol (TBA) Tert-Butyl Alcohol ND 2.5 ug/L Methyl Tert-Butyl Ether (MTBE) ND 0.5 ug/L Diisopropyl Ether (DIPE) ND 0.5 ug/L Ethyl Ted-Butyl Ether (ETBE) ND 0.5 ug/L Tert-Amyl Methyl Ether (TAME) ND 0.5 ug/L BTEX Components Benzene 1.2 0.5 ug/L Toluene 5.2 0.5 ug/L Ethylbenzene 1.7 0.5 ug/L m & p Xylenes 2.1 0.5 ug/L o Xylenes 2.9 0.5 ug/L Internal Standards Results % RecOvery · Benzene, fluoro 50.0 . 100% Benzene-d5, chloro- 50.0 100% 1,4-Dichlorobenzene-d4 50.0 100% Surrogate Standards - Methane, dibromofiuoro- 59.3 119% 1,2-Dichloroethane-d4 53.3 107% Toluene-dS. 52,7 :],05% p-Bromofluorobenzene (BFB) 46,3 93% Halcyon Laboratories, :[nc, EPA 8260B Laboratory Report Water Sample Results in ug/L Certification # 1920 CLIENT:. EzC Remediation, LLC 5300 Woodmere Drive, Suite 105 Bakersfield, CA 93313 Project ID · Mr Fast Report Date · 8/27/2002 Sample ID · 3555/MW-4 Analyte Result Method RL Units 5 Oxygenates t-Butanol (TBA) Tert-Butyl AlcohOl ND 2.5 ug/L Methyl Tert-Butyl Ether (MTBE) ND 0.5 ug/L Diisopropyl Ether (DIPE) ND 0.5 ug/L Ethyl Tert-Butyl Ether (ETBE) ND 0.5 ug/L Tert-Amyl Methyl Ether (TAME) ND 0.5 ug/L BTEX COmponents Benzene 1 0.5 ug/L Toluene 4.3 0.5 uF~L Ethylbenzene 1.1 0.5 ug/L m & p Xylenes 1.7 0.5 ug/L o Xylenes 2.7 0.5 ug/L Internal Standards Results % Recovery Benzene, fluoro 50.0 - 100O/o Benzene-d5, chloro- 50.0 100% 1,4-Dichlorobenzene-d4 50.0 100% Surrogate Standards Methane, dibromoflu°ro- 61.0 122% 1,2-Dichloroethane-d4 53.5 107% Toluene-d8 · 54.7 109% p-Bromofluorobenzene (BFB) 47.1 94% Halcyon LaboratOries, Inc. EPA 8260B Laboratory Report Water Sample Results in'ug/L Certification # 1920 CLIENT: E2C Remediation, LLC 5300 Woodmere Drive, Suite 105 Bakersfield, CA 93313 Project ID: Mr Fast Report Date: 8/27~2002 Sample.ID' 3556/MW-10 Analyte ResUlt Method RL Units 5 Oxygenates t-Butanol (TBA) Tert-Butyl Alcohol ND 2.5 ug/L Methyl Tert-Butyl Ether (MTBE) ND 0.5 ug/L. Diisopropyl Ether (DIPE) ND 0.5 ug/L Ethyl Tert-Butyl Ether (ETBE) ND 0.5 ug/L Tert-Amyl Methyl Ether (TAME) ND 0.5 ug/L BTEX Components Benzene ]. ] 0.5 ug/L Toluene 4.9 0.5 ug/L Ethylbenzene 1.7 0.5 ug/L m & p Xylenes 1.? 0.5 ug/L 2.8 0.5 ug/L O Xylenes Internal Standards ResUlts % Recovery Benzene,· fluoro 50.0 100% Benzene-dS, chloro- 50.0 100% 1,4-Dichlorobenzene-d4 50.0 100% Surrogate Standards Methane, dibromofluoro- 53.7 107% 1,2-Dichloroethane-d4 53.3 107% Toluene-d8 53.4 107% p-Bromofluorobenzene (BFB) 46.0 92% 'Halcyon Laboratories, :[nc. EPA 8260B Laboratory Report water Sample Results in ug/L Certification # 1920 CLIENT: E2C Remediation, LLC 5300 Woodmere Drive, Suite 105 Bakersfield, CA 93313 Project ID · Mr Fast Report Date: ' 8/28/2002 Sample ID: 3557/MW-9 I Analyte ' Result Method RL Units I 5 Oxygenates t-Butanol (TBA) Tert-Butyl Alcohol ND 2.5 ug/L Methyl Tert-Butyl Ether (MTBE) ND 0.5 ug/L I Diisopropyl Ether (DIPE) ND 0.5 ug/L Ethyl Tert-Butyl Ether (ETBE) ND 0.5 ug/L Tert-Amyl Methyl Ether (TAME) ND 0.5 ug/L I BTEX Components I Benzene 1.8 0.5 ug/L Toluene 7.9 0.5 ug/L Ethylbenzene 2.8 0.5 ug/L i m & p Xylenes 4 0.5 ug/L o Xylenes 5.5 0.5 ug/L I Znternal standards Results % Recovery I Benzene, fluoro ' · 50,0 100% Benzene-d5, chloro- 50.0 . 100% 1,4-Dichlorobenzene-d4 50.0 100% I Surrogate Standards I Methane, dibrOmofluoro- 54.4 109% 1,2-Dichloroethane-d4 53.8 108% Toluene-d8 · 51.6 103% i p-Bromofluorobenzene (BFB) 50.7 101% 1 Halcyon Laboratories~ [nc. EPA 8260B Laboratory Report Water Sample Results in ug/L Certification # 1920. CLIENT: E2C Remediation, LLC 5300 Woodmere Drive, Suite 105 Bakersfield, CA 93313 Project ID' I~lr Fast Report Date · 8/28/2002 Sample ID · 3558/MW-11R I Analyte Result Method RL Units I 5 Oxygenates t-Butanol (TBA) Tert-Butyl Alcohol ND 200 ug/L Methyl Tert-Butyl Ether (MTBE) ND 40 ug/L I Ether ND 40 ug/L Diisopropyl (DIPE) Ethyl Tert-Butyl Ether (ETBE) ND 40 ug/L Tert-Amyl Methyl Ether (TAME) ND 40 ug/L I BTEX Components I Benzene ND 40 ug/L Toluene 33,280 40 ug/L Ethylbenzene 130 40 ug/L I m & p Xylenes 8,330 40 ug/L o Xylenes 7,700 40 ug/L I Internal Standards Results % Recovery I Benzene, fluoro 50.0 100% Benzene-dS, chloro- 50.0 100% 1,4-Dichlorobenzene-d4 50.0 100% i Surrogate Standards I Methane, dibromofluOro- 53.3 107%: 1,2-Dichloroethane-d4 50.2 . 100% Toluene-d8 51.8 104% I p-Bromofluorobenzene (BFB) 50.7 101% ! Halcyon Laboratories, :[nc. EPA 8260B Laboratory Report water Sample Results in ug/L Certification # 1920 CLIENT: E2C Remediation, LLC 5300 Woodmere.Drive, Suite 105 Bakersfield, CA 93313 -Project ID · Mr Fast Report Date · 8/28/2002 sample ID · 3559/MW-1 Analyte Result Method RL' Units 5 Oxygenates t-Butanol (TBA) Tert-Butyl Alcohol ND 2.5 ug/L Methyl Tert-Butyl Ether (MTBE) ND 0.5 ug/L Diisopropyl Ether (DIPE) ND 0.5 ug/L Ethyl Tert-Butyl Ether (ETBE) ND 0.5 ug/L Tert-Amyl Methyl Ether (TAME) ND 0.5 ug/L BTEX Components Benzene ND 0.5 ug/L Toluene 700 0.5 ug/L Ethylbenzene 55 0.5 ug/L m & p Xylenes 210 0.5 ug/L o Xylenes 175 0.5 ug~L Internal Standards Results % Recovery flu°ro 50.0 100% Benzene, Benzene-d5, chloro-. 50.0 100% 1 4-Dichlorobenzene-d4 50.0 100% Surrogate Standards Methane, dibromofluoro- 54.7 109%' 1,2-Dichloroethane-d4 52.6 105% Toluene-d8 51.4 103% p-Bromoflu0robenzene (BF.B) 47.8 96% HalcYon Laboratories, :[nc. EPA 8260B Laboratory Report Water Sample Results in ug/L 1920 Certification CLIENT: E2C Remediation, LLC 5300 Woodmere Drive, Suite 105 Bakersfield, CA 93313 Project ID: Mr Fast ,. · RePort Date · 8/28/2002 Sample ID · 3560/MW-7 Analyte Result Method RL Units 5 Oxygenates . t-Butanol (TBA) Tert-Butyl Alcohol ND 2.5 ug/L Methyl Tert-Butyl Ether (MTBE) ND 0.5 ug/L Diisopropyl Ether (DIPE) ND 0.5 ug/L Ethyl Tert-Butyl Ether (ETBE) ND 0.5 ug/L Tert-Amyl Methyl Ether (TAME) ' ND 0.5 ug/L BTEX Components Benzene ND 0.5 ug/L Toluene 810 0.5 ug/L Ethylbenzene 810 0.5 ug/L m & p Xylenes 3,720 0.5 ug/L o Xylenes 1,930 0.5 ug/L Internal Standards Results % Recovery Benzene, fluoro · 50.0 .100% Benzene-d5, chloro- 50.0 100% 1,4-Dichlorobenzene-d4 50.0 100% SUrrogate Standards Methane, dibromoflUOro: 58.2 116% 1,2-Dichloroethane-d4 55.9 112% Toluene-d8 51.1 102% p-Bromofluorobenzene (BFB) 51.9 104% . Halcyon Laboratories, :[nc. EPA 8260B LaboratOry Report Water Sample Results in ug/L Certification # 1920 CLIENT: EzC Remediation, LLC 5300 Woodmere Drive, Suite 105 Bakersfield, CA 93313 Project ID: Mr Fast Date · 8/28/2002 Report Sample ID: 3561/MW-8 Analyte Result Method RL Units 5 Oxygenates t-ButanOl (TBA) Tert-Butyl Alcohol ND 200 ug/L Methyl Tert-Butyl Ether (MTBE) ND 40 ug/L Diisopropyl Ether (DIPE) ND 40 ug/L Ethyl Tert-Butyl Ether (ETBE) ND 40 ug/L Tert-Amyl Methyl Ether (TAME) ND 40 ug/L BTEX Components Benzene ND 40 ug/L Toluene 32,6?0 40 ug/L Ethylbenzene 3,940 40 ug/L m & p Xylenes 9,020 40 ug/L o Xylenes 7,850 40 ug/L Znternal Standards Results % Recovery Benzene, fluoro 50.0 100% Benzene-d5, chloro- 50.0 100% 1,4-Dichlorobenzene-d4 50.0 100% Surrogate Standards Methane, dibromofluoro- 52.5 105% 1,2-Dichloroethane-d4 48.5 97% Toluene-d8 52.9 106% p-Bromofluorobenzene (BFB) 48.8 98% I Prqiect Number 1801BK03 SeDtember 30.'2002 ! I ! I I ! ! I. APPENDIX C ! Boring Logs with Well Completion Details ! ! ! ! ! ! ! ! I E~C Remediation, LLC Appendix ' LD' ExpLoRATORY BORING LOG Field location of boring: ;, ' PROJECT No. I~0~, ' . DATE ''''/(('~/° { BORING No. ~ "" CLIENT [/v~.Cc LOCAT~O~ ~ ~ LOGGE~. BY ~~ ' DRILLER · . . · .' " '" ' ' Casinginslallation'data .... Hole dia. ~ ;~ ~ ~ DESCRIPTION I I I ~ I I I I I I · I ~ I · ., I I t I I I I i i I .,, ~ ~ I REMARKS: I- -' ""- ' ' 'rlE'LD_ _ EXPLORATORY BORING LOG .' - ' Field location of boring:.· - PROJECT No. I~o t,. DATE '] I I?[a L..- BORING N~.c~. CLIENT· LOCATION' ' ~ ( ['''- %'¢ Sheet LOGGED BY (~'-¢,-'~("'""- DRILLER . . · · .' ' Casing installation data ~- Hole dla.~ ~ ,~.-. Wa,e,,eve, I '1 I i o ~-,~ E Date " DESCRIPTION I ~ ' I I I I I I I I I i --- REMARKS: · . · . ' '' ' -' - ' -"FIELD'--'"' "EXpLoRATORY. BORING'' LOG lo. cation of boring: ' PROJECTNo. I NoT Field BORING ·" CLIENT '~/~ ~-~" ~-~ LOCATION LOGGE~..BY Hole dla.~; ~ · ~ DESCRIPTION I I i I I I - I I ! " '. - I I I ~ i ~ - i I ~ I - REMARKS: .. 'i.i -"' - FIELD' EXPLORATORY BORING LOG · ' '-':' ' -' / Fleldlocatlon of boring: -' ' '- PROJECTNo, I ~"O[ DATE -7 I~//¢ Z.- BORINGNo CLIENT LOCATION '~1 6-- ~"~' ' Sheet ..~ LOGGED BY · .- ·" · Ga~ln~ installation data ~ / Hole .~ ~ ~ Waterlevel I I ' i I DESCRIPTION . I 31 [ / I I I I I I I t i- I I I I' I I REMARKS: -- 'FIELD'EXPLORAToRY Field location °f boring: . ' PROJECTNo, i~i.)l ~l('01 DATE "7I~'7' i '" CLIENT ~9- ~g--~'-- /~ ~BOR~NG No..i~ LOCATION LOGGE~. By · ' ' '. ' Casinglnstallation data ' ' ' "' " Hole dia. ~ :'~ - ~'IT J ~ DESCRIPTION · ~ t I" t I I I I I I I i tls I I¢o .I ! ~ .i .. e I ~o I I H~-~0~.< iloz~ Se ~v' 10'f. E4~ Ct~ ~,~,~-eo ~oc~. ~,c~./ I I I I J il b~l~-JtO' II0 ~Tllo' ~6o ~ue~ O~se~/ ~w~O/ -- J ~O I I I I' ! --- REMARKS: · . FIELD'EXPLORATORY BORING LOG .--' ': -' Fleldlocatlon ofborin9: ..- ' pR(~JECTNo. JcC0(G~:o.( DATE ,-l[17/~Z BORINGNo. CLIENT, I~P,-- ~-~'-'- LOCATION ~ LOGGE~. BY .~'~ DRILLER ~ ~ Water level _ = ~ Date ~ ~ ~ ~ DESCRIPTION I ~0 I ~Oo~L~s I I' I .. I i I I t REMARKS: .. FIELD EXPLORATORY BORING L~DG-. ' - i Field locatlon of boring: "; . · PROJECT No. (q'of ~,xor DATE -)f~ (o"z. ' BORING No LOCATION ~oo i-~a~o~ ~ Shee~ . LOGGED BY · ' Casing Ins[a,a[ion da~a , Hole dia. ~ DESCRIPTION " I I I I ~ I I ~ I I I 'I I I I I I I I I ! t I I I · I I I ~ . I I I I I i .- I I I I I RE&lARKS: · ' "' FIELD EXpLo~JATORY BORING LOG · ' ' -- Field location of boring: -.. - PROJECT N°. J~{ [~c0{ DATE ")/~'/O'z. BORING N~'-~"- LOCATION -- ~CO ~~ LOGGEO BY ~' ~ DRILLER .... -~rS . · ' 'Casing ins[alla~ion data, cov'r~a ~c~c-~ ~ ~ -~q~ BL~ puc m = ~ Water level I i i I -- m ~ ~ ~ ~b ~ ~ ~'~ Time I I I I '~ I I I I I I I I I I I I I' ! ' ' I I I t ~ I I I ~ I I I I I I I I I I I I I i · - - FIELD EXPLORATORY BORING LOG ' -Field location of boring:. ', PROJECT.No, , I~0{ OKra( DATE "7('~(o~ BORING No CLIENT ~r¢~ ¢L ~).- 5'""F LOCATION. ~0o ~,r)~c~c~ ~ Sheet LOGGE,D. BY ¢__~t-~C-Lcu-- DRILLER C~(¢.~ of. ~.__~_.._ ' ' · Casing installation data · - Drilling method ~5~ ' ~-~0 ~ Hole dia. 8 - ~ '- ~ o ~ ~ ' ~z o - ~ : DESCRIPTION I I I ~ I I ~ ~I .. I I I I I I I I I , I ? I i ! ! ' I I I I I I ! I I .. I I I .... ~ I ~ I~ I I~l[-1-'za ~o $g ~V $o' I'~ I I~0 I I i REMARKS: ...... "FIELD'ExPLORATORy BORING EOGi '" '-" Field location of boring: b PROJECTNo. I~'{)'lO~O( DATE '"7('ff(~r.,'7"z~ LOCATION {~Oo '~_~.,,.v 0 ~ e~- c. LOGGED BY ~-~'~-'~'""' DRILLER. ~.-~/'"" Drilling method ~ = DEScRiPTiON I ' i ~ I ' I I I REMARKS: .. FiELD'EXPLORATORY BORING '- ' Field iocatlon of boring: '-'"'" CLIENTPROJECT No.. ~l~(~s~r-O~ D*TE ~(,o [ o~ LOCATION ~ ~,3 ~ ~ Shee~ LOGGED BY ~lcc~ DRILLER . ' Ca~a~ Installation data Hole dia. ~ o g ~ ~ ~ ~ Time = ~ Date ~ o~ DESCRIPTION - .,, -- ~~. 'FIELD'EXPLORJATORY BORING LOG -- Fleld iocatl°n °f boring: ' PROJECT No. I~0)~I{01 DATE CLIENT LOCATION LOGGE~. BY · ..'".' · ' c~i~ ~,~o~ ~ ~ Water level I j ~ ~ .~ o ~ ~ o ~ Time' ~ ~ ~ - ~ ~d · ~ EE ~ E OE~ ~ ~ ~ ~ DESCRIPTION I I I I I J j I I I go~ ~ I ~ .. I I J '. REMARKS: , .. · ' FIELD'EXPLOR~TORy BORING L-OG .." Fleld.locatlon of boring: . '.- PROJECTNo. i%'d[~,1,(o( DATE "~ (ro/~ ~- !BORING No- I .... CLIENT_ I~ r'L ,.~<;'~"-- LOCATION ~,oo ~.~t,~0,¥~. L-~, Shee[ J..__L__ LOGGED BY ~-J~ucz 0 DRILLER (-,.w-t-~ · ' of ~ .. G~sln~ installatioa'data .. .... Ho~ dia. ~ k) 0 I. 7 I IV~-~o I0 ~(~ GA~- 1~5 i~1 I , I I '1 I I I I I I i I I I I I ~ I i I I - I I I .... - I t ------ R/MARKS: · ' il -. ,-o : .'--.-. FI EXp RAToRY BORING LoG Field location of boring: . :.; pRojECT No. ,/~O'( ~¢¢o { - DATE ~-~[o~0~ BORING NoT '"' CLIENT' ~ LOCATION ~ ~0 ~O~ ~ Sheel~ .. LOGGEd, By ~ ~c~ DRILLER ~ 0¢ ~. ' " .' ' ' · Casing installation data ~'L ~~(' O,0~ ~o~ ) . / ) ~"' I ~ ~ ~ E E ~ ; = ~ Date · m DESCRIPUON I'~o 00o~ (6% - _ I - 0 i~ I I st I I I I I I I I ! I I I I I I I I I I ~ I I ;,' ... I ~0 I I I I I I I I ._ I ~q I ,I I Z~ I. I " I I I t I - REMARKS: FleldlocatlOnofbofing: .-' .. " ' PRC~jECTNo, ~?(J {' DATE -'~/11/02 BORINGNo~' " DESCRIPTION I · I I I I I I I I I I I I I "/ I I I I REMARKS: ' · .. - '": -:~ FIELD'EXPLORATORY BORING LOG.' - : I Field location of boring: "' ' PROJECT No. ~ 40 ~- /( ~ w BORING No. - '.; ' . DATE LOCATION.' GOo ~¢~o~ L~' Sheet~ LOGGEO BY ~ ~ M. DRILLER ~' o~ ~ ~ DESCRIPTION I ~ I I ~, '.. I ~ I ~ "-. I i 1'~7 I I " - ~ i I · I I I I I I ... I ! .- '. .... --, .- ~ .: .... "-~.~ -~.',.~:.-":..: .; . ..' .' -.. ... ; .: ':_"- ., ,. ._ ..... ~ .... .... ~ - :.~..~...'}..., -.-._,.:'.:';....:,"'~ .. .. -.- .. -:- : :.' . . ~'-. ., -.r: ......; ...- _._ .. FIELD EXPLORATORY BORING LOG · ' Field location of boring: .., PROJECT No. i?ol ~¢o( DATE ,"~/1(/0",.-" BORING.No '" CLIENT ~ ~'~ ~S-~' ' LOCATION , ~o,o [~..~4.;0~.-¢ ~ Shee[~ LOGGE~;By · . . .. . Casing installation data . .. ~ ~ole dla. DESCRIPTION ] - . I I l I Il I I l I ~ I I I ~ I I ~ ~ ! .. I I i I I I I REMARKS: 'EXPLORe, TORy -' .. · ' '- .... FIELD BORING LOG'- m Fieldlocatlon ofboring: -..' = PR~J~CTNo. /rOl~ot,. DATE . LOCATION ~O ~¢~0~¢ Sheet~ - LOGGE~,By ~' ~ DRILLER ~L I . 0~ ~ ~ DESCRIPTION I , I I 'REMARKS: '- ' ' ' LOGGE~,BY~ ~ DRILLER ~ DESCRIPTION I I I ~ I I I I I .I ! t I I O I I I I I I I REMARKS: · .. · FIELD EXPLORe, TORY BORi . ' '-: NG LOG ": Field'location ofboring: )" PROJECTNo~ '/~0 ( DATE '' '" CLIENT, , .~ ~S.~ . LOCATION , ~ ~ ~ '~' Sheet - LOGG ED BY~ ~ ~c~ DRILLER -' .... · Casing Installation data "· ' - :' Drllling method ~ ~ ~0 } Ho~e dia. ¢;A' ~ = = ~w Date ~ DESCRIPTION I ~ I I ,~ ~ I ~, I v~w-3¢ I~ it ~ · ~ ! ~ .... I I ,I I I _ I i I I I i .. I I I I I _ REMARKS: · . .. ; - :.. . . . . , .:.. .-.:.::..~ ..:. :*..: , . ."}...- ~: .'.-....'... . ... ::,;. .- _ . .... .:. _ , .. ... -~.:.., :: .... FIELD EXPLORATORY BORING LOG FIeld location of boring: -:, '' PROJECTNo. I?OIG~(OI DATE -l/[({~3l.~ BORINGNo '" - CLIENT ~' ~ ~ LOCATION ~0 ~~G~ LOGGE~.By ~~ DRILLER ' CaSbg installation data Hole dla.~ == 0 ~ = ~ Date DESCRIPTION .- " :' FIE E BORING '... ' · F,eU~ooat,or~ofborl,~: -. .... ,=Ro.,~c'~No. ,',',,~"°' o^T~-fi, fo'- ~OR'~G~iTo. "" CLIENT ~ ~s~ A~'~. ' LOCATION ~o ~O~&~ C~ Shee~ LOGGEDBY ~ '1~ DRILLER r ' Casing installation data ~~ ~ ~+- ~'r Drilling method ~ ~-~0 5~4t. ~(~t. ~ Cc-~c-g ~ o ~ ~ = -- Date ~ I . ~ ' REMARKS: · .. · FIELD'EXPLOR~TORy__RING LOG . ' i ' Field location of boring: ..'.: PRC~JECTNo. J~'0( 0~e I -DATE 'z.-. @ORINGNo. · " CLIENT ~v~-,t ,~____~ ~ · ~--~ .. LOCATION '~¢0 ~o~ ~' Sheet~ . LOGGED By~~ DRILLER ~ ' of ~ . .' Casing installation data " ' ' . Hole dia. ~j~ - - ~q Date ~ DESCRIPTION . O. I I I I I I I i I I I I I I I I I I I ~ i I I~ I I ~ ,. I I I ! I ! I I I I t i I ~ ! .- I I I I i .....I~ I I~ I. I I REMARKS: ' . .. FIEL'D EXPLORe, ToRY BORING LOG · ' ' · Fieldl°catl°n °f b°ring: :, 'PROJEOTNo. ]~0l pr(Of DATE LOOATION ~ ~gc~WO~ SheeI~ I We Drilling method ~ ~ ~ Water level J j j DESCRIPTION 13 I I I I I I I i I REMARKS: . .... . FiELD'ExPLOR~TORY BORING LO Field location of.boring: LOCATION ~OO 8~0~-~ ~,' LOGGED BY " ' Casing installation data ..... Hole dl, Water level Time I ' DESCRIPTION RE,~IARKS: _ .. ' FIELD EXPLORATORY bORING:LOG · " ' ' ' ! Fleld location of boring:.. '" '" CLIENTPROjECT N°' ' J~01~01 ' J,~ YZ'--~',~,"3'- DATE LOCATION ~ ~ ~ ~C(~ 0 ~-~ LOGGE~.By ~, ~'~DRILLER ' -' Casing Installation data ~- ~o~. ~ ~- - Drilling method ~ ~ -~o ~ ~1¢~,~ ~5 5~ -~l~t, ~~ ~,~ Hole dla. ~;A ' ~ ~ 5~,~T. , DESCRIPIION goo I ~1 i ~o I I I I I I I I I I I ! I ! I I I I I I I I I I I I 1 I II ~o I I ~C I I I I i I ~FTo~ o~ ~ ~'~' ~T. I i I I ! I I I i I I i ,,, I I I -- _ I I I .. I i .i . I I t . R~MAR~S: · ':: - '-" ' "':': ' :!'-FIELD-~ExPLO-RATORY IBoR'iN~ LO~ · .. -', ~ ~oo~,o,-,. of. ~o,.i,-,~,: . "' '.' '".. 'CLIENT '/,1~ ,,.:~'T" .. /'~--I~. ' · LOCATION (~o LOGGE?.By · ' -.' .' · Casing lnstaIla'lion data · ' · :' Hole dia. ~,,x -~' ," ,~_.o _o ~ ,-. ~ I o='~M Time -- ~- I I I~ I i I I~ I i -- _ .I I I I I lb . / I I '.. I t .. REMARKS: · . ,_.... .-:... ~: /:?.,:::..:: ::. ~:' :..'.: :] ~ :: -.::..::.'-:.. :. ;:j:..::. ;.:?:-:;': ....... .. .... .:.. .-....'- : _ .~.-.-"'""' :::...._. ': .: :':'.]::~ -: :.: ..:: : _.( ', :. '/-'.-::'.._,.. .. /-.'.-. . ~ :~..::' [', _.. iE : : ";'ii :'. z '-.-'- _ , Field'locatlon of. boring: '~ "' ". PROJECTN0. {.fo (' · DATE BORING No. , ' "' CLIENT · LOCATION (~oo C~-~,~,.~o ~ ~ She~t~ LOGGE~. BY Drilling meihod ~~ . · Holed a,~ ....... ~ DESCRIPTION !o Ve~~ ~o, ~ po~y o I~fl I I ', I I I I I I I I I , I I I I ~ I I ~' ' I JO I 0 I I¢ I I ~¢~-~~ q~ 5P ~¢ I ~ I I " I I I I I I t REMARKS: .' . - . = : . . . . ~ . . · . . - .- .: .... .. . .. ,...:~. '~ = .....~ . · :. j.'_' ATOR FIELD EXP OR Y BORING LOG - ' Field location of boring: ' '"' ' " CLIENTPROJECT No.~.~J~0{ "~ ~<~"~K°I DATE ~ (1~/0~ BgRIN~~s. ~ No. LOCATION ~ ~'~~ ~' Sh .. · j . Casing lnstallaiion data · ' ' ' ~. o ~ -- ~ Date J ~ DESCRIPTION i z~ i I I I i I I I I I I I I I ~ " I~ I I I I I REMARKS: _ ..:- .'- .. .... :'- - .'~ i,.~'~-' . .. .. ~' -FIELD'EXpLoRATORY B RING L G I' Field locatlon of boring: . '.: · PRC~JEOT '" - CLIENT · I . LOCATION ~ ~ u~ LOGGE~. BY .~- ~ . DRILLER Hole dla.~;A I ~ ~ I I ~1 DESCRIPTION I I ~o I I R~MARKS: '. Project Number 1801BKO~ Seotember 30. 2002 APPENDIX D Soil Analytical Laboratory Report E:C Remediation, LLC Appendix D Halcyon Laboratories, :Inc. Laboratory Report Certification # 1920 CLIENT EzC Remediation, LLC Project Name: Mr Fast 5300 W0odmere Drive, Suite i05 Bakersfield, CA 93313 Matrix: Soil Sampled by: Gabriel Halcon TESTS: iTPH GaS by EPA 8015M .TPH g Analysis: 7/24/2002 Date of Report: 7/26/2002 Units: mg/Kg Sample#: 2K2-3305 2K2-3306 2K2-3307 2K2-3308 2K2-3309 2K2-3310 Date Sampled: 7/11/2002 7/11/2002 7/11/2002 7/11/2002 7/11/2002 7/11/2002 DLmg/Kg Sample Description: ASS-40 AS545 ASS-50 AS5-55 ~540 AS545 TPH Gasoline 0.4 1.4 ND 0.1 0.5 0.4 0.1 Surrogate Recovery % 89 83.2 94.1 98.5 96.5 97.8 ~Sample #: Date Sampled: DL rog/Kg Sample Description: TPH Gasoline Surrogate Recovery % Sample #: Date Sampled: . DL mg/Kg Sample Description: TPH Gasoline Surrogate Recovery % I DL = Detection Limit ' ~//'~ ~" ' ND - Non-Detect 'at given DL . NA - Result not available Principal Analyst: Phil Acosta Halcyon Laboratories, Inc. EPA 8260B Laboratory Report so. Sample Results in rog/Kg certification # 1920 CLIENT: EzC Remediation, LLC 5300 Woodmere Drive, Suite 105 Bakersfield, CA 93313 ProjectlD: Mr Fast Report Date · 8/1/2002 Sample ID · 3305/AS5-40. Analyte Result Method RL Units MTBE Methyl Tert-Butyl Ether (MTBE) ND 0.1 mg/Kg BTEX Components Benzene ND 0.1 rog/Kg Toluene ND 0. ] rog/Kg Ethylbenzene ND O. 1 mg/Kg m & p Xylenes ND 0.1 mg/Kg o Xylenes ND 0.1 mg/Kg Internal Standards Results % RecOvery Benzene, fluoro 50.0 100% Benzene-dS, chloro- 50.0 100% 1,4-Dichlorobenzene-d4 50.0 100% Surrogate Standards Methane, dibromofluoro- 62.3 125% 1,2-Dichloroethane-d4 57. ! 114% Toluene-d8 46.3 93% p-Bromof uorober)zene (BFB) 55.6 111% I I Halcyon Laboratories, InC. EPA 8260B Laboratory Report so~ Sample Results in mg/Kg Certification # 1920 CLIENT: E2C Remediation, LLC 5300 Woodmere DriVe, Suite 105 Bakersfield, CA 93313 Project ID: Mr Fast RePOrt Date · 8/1/2002 Sample ID · 3306/AS5-45 Analyte Result Method RL Units MTBE Methyl Tert-Butyl Ether (MTBE) ND' 0.1 mg/Kg BIEX Components Benzene ND 0.1 mg/Kg Toluene 0.1 0.1 mg/Kg Ethylbenzene ND 0.1 mg/Kg m & p Xylenes ND 0.1 mg/Kg o Xylenes 0.1 - 0.1 mg/Kg Internal Standards Results % Recovery Benzene, fluoro 50.0 100% Benzene-d5, chloro- 50.0 :1.00% 1,4-Dichlorobenzene-d4 50.0 :1.00% Surrogate Standards Methane, dibromofluoro- 55.3 111% 1,2-Dichloroethane-d4 52.7 :1.05% Toluene-d8 49.0 98% p-Bromofluorobenzene (BFB) 53.4 :1.07% . Halcyon Laboratories, :Inc. EPA 8260B LabOratory Report Soil Sample Results in mg/Kg Certification # 1920. I CLIENT: E2C Remediation, LLC 5300 Woodmere Drive, Suite 105 i Bakersfield, CA 93313 Project ID · M r Fast I Report Date · 8/2/2002 I Sample ID · 3307/AS5-50 I Analyte Result Method RL Units MTBE I Methyl Tert-Butyl Ether (MTBE) ND 0.1 mg/Kg I BTEX Components I Benzene ND · O: 1 mg/Kg Toluene ND 0.1 mg/Kg I Ethylbenzene ND 0.1 mg/Kg m & p Xylenes ND 0.1 mg/Kg O Xylenes ND 0.1 mg/Kg I Internal Standards Results % Recovery I Benzene, fluoro 50.0 100%' . Benzene-d5, chl0ro- 50.0 100% 1,4-Dichlorobenzene-d4 50.0 100% I Surrogate Standards ' ' m Methane, dJbromofluoro- 57.5 115% · 1,2-Dichloroethane-d4 57.4 115% Toluene-d8 50.9' 102% i p-Bromofluorobenzene (BFB) 54.2 108% I 'Halcyon Laboratories, Inc. EPA 8260B LaboratorY Report seaSample Results in mg/Kg I Certification # 1920 I CLIENT: EzC Remediation, LLC 5300 Woodmere Drive, Suite 105 I Bakersfield, CA 93313 Project ID · Mr Fast I Report Date · 8/2/2002 I. Sample ID · 3308/AS5-55 I Analyte Result Method RL Units MTBE Methyl Tert-Butyl Ether (MTBE) ND 0.1 BTEX Components I Benzene ND 0.1 m~Kg Toluene ND 0.1 mg/Kg I Ethylbenzene ND 0.1 mgFKg m & p Xylenes ND 0.1 mg/Kg O Xylenes ND 0.1 m~Kg I Internal Standards Results % Recovery I Benzene, fluoro 50.0 100% Benzene-dS, chloro- 50.0 100% 1,4-Dichlorobenzene-d4 50.0 100% I Surrogate Standards I Methane, dibromofluoro- 58.1 116% 1,2-Dichloroethane-d4 54.9 110% Toluene-d8 53.5 107% i p-Bromofluorobenzene .(BFB) 50.0 100% Halcyon Laboratories, :Inc. EPA 8260B Laboratory Report Soil Sample Results in mg/Kg Certification # 1920 CLIENT: EzC Remediation, LLC 5300 Woodmere Drive, Suite 105 Bakersfield, CA 93313 Project ID ' Mr Fast Report Date · 8/2/2002 Sample ID · 3309/AS5-60 Analyte Result Method RL Units MTBE Methyl Tert-Butyl Ether (MTBE) ND 0.1 m~Kg BTEX Components Benzene ND 0.1 m ou~Kg Toluene ND 0.1 m~Kg Ethylbenzene ND 0.1 mg/Kg m & p Xylenes ND 0.1 rog/Kg o Xylenes ND 0.1 mg/Kg Internal Standards Results O/o Recovery Benzene, fluoro 50.0 100% Benzene-d5, chloro- 50.0 100% ' 1,4-Dichlorobenzene-d4 50.0 100% Surrogate Standards · ' Methane, dibromofluoro- 55.9 112% 1,2-Dichloroethane-d4 . 52.7 105% Toluene-d8 49.9 100% p-Bromofluorobenzene (BFB) 48.4 97% Halcyon Laboratories, :[nc. EPA 8260B Laboratory Report so. Sample Results inmg/Kg Certification # 1920 I CLIENT: EzC Remediation, LLC '5300 Woodmere Drive, Suite 105 i Bakersfield, CA 93313 Project ID · Mr Fast I Report Date · 8/2/2002 i Sample ID · 3310/AS5-65 I Analyte Result Method RL Units MTBE I Methyl Tert-Butyl Ether (MTBE) ND 0.1 mg/Kg I BTEX Components I Benzene ND 0. I mg/Kg Toluene ND 0.1 mg/Kg I Ethylbenzene ND 0.1 mg/Kg m & p Xylenes ND 0.1 mg/Kg O Xylenes ND 0.1 mg/Kg I Internal Standards Results % Recovery I Benzene, fluoro 50.0 100% Benzene-d5, chloro- 50.0 100% 1,4-Dichlorobenzene-d4 50.0 100% I Surrogate Standards I Methane, dibromofluoro- 62.2 124% 1,2~Dichloroethane-d4 55.7 111% Toluene-d8 55.3 · 111% p-Bromofluorobenzene (BFB) 50.8 102% I I ;I tones Chain of Custody Form Client Name!_ EiC Remediation. LLC 661.83rl.6906 fax 661.831.6234 Analysis Requested Sample Matdx Project Name: ~. 4::::~ S ~ ~ ~ ~ ~ Aqueous Client Address: 5300 Wo0dmere Dr., Suite 105. Bakersfield, CA 93313 ~ ~ ~ ~ e ~ ~ ' Project Manager: I CC D ~ w s "~ _ < ~ ~ ~ ~ Soil Sampler Name: ~6~1C~ ~60 ~ ~ ~ = ~ ~ ~ ~ Acidified x ~ 0 ~ ~ ~ ~ ~ ~ x 8ample Dine 8ample T~me 8ample Description and ~oma~ner Type ~,~ _) ) Comments i I tuested:. 24 Hour 48 Hour 5-Day Standard 1 J "Relinquished By: ~_~, ~01.~ Date: 7] ,,¢0~ Relinquished By: Date: " Received By: · ~~ ' Date:C/; Received By: Date: · Halcyon Laboratories, :Inc. I Laboratory Report Certification # 1920 I CLIENT E2C Remediation, LLC Project Name: 'Mr Fast 5300.Woodmere Drive, Suite 105 I Bakersfield, CA 93313 Matrix: Soil .. Sampled by: Gabriel Halcon I TESTS: TPH Gas by EPA 8015M · TPH g Analysis: 7/24/2002 Date of Report: 7/26/2002 'l Units: mg/Kg . ~Sample #: 2K2-3299 I Dare'Sampled: 7/11/2002' !DL mg/Kg Sample DescriPtion: AS4-40 I ITPH Gasoline ND 0.1 I !Surrogate Recovery % 98.6 Sample#: 2K2-3300 2K2-3301 2K2-3302 2K2-3303 2K2-3304 Date Sampled: 7/11/2002 7/11/2002 7/11/2002 7/11/2002 7/11/2002 DL mg/Kg i Sample Description: AS4-45 AS4-50 AS4-55 AS440 AS4-65 i TPH Gasoline 149.5 495.0 25.7 35.0 117.5 5.0 Surrogate Recovery % 95.8 97.1 97.2 92 102.9 Sample #: I Date Sampled: DL mg/Kg Sample Description: I TPH Gasoline I Surrogate Recovery % DL = Detection Limit I ND - Non-Detect at given DL NA - Result not available Principal Analyst: Phil AcOsta Halcyon LabOratories, Tnc. Laboratory Report CertificatiOn # 1920 CLIENT EzC Remediation, LLC Project Name: Mr Fast 5300 Woodmere Drive, Suite 105 Bakersfield, CA 93313 Matrix: Soil Sampled by: Gabriel Halcon TESTS: TPH Gas by EPA 8015M TPH g Analysis: 7/25/2002 Date of Report: 7/27/2002 Units: mg/Kg Sample #: 2K2-3313 Date Sampled: 7/12/2002 DL mg/Kg Sample Description: . AS6-30 TPH Gasoline 0.2 0.1 Surrogate Recovery % 93 Sample#: 2K2-3316 2K2-3317 2K2-33!8 2K2-3319 Date Sampled: ' 7/12/2002 7/12/2002 7/12/2002 7/12/2002 DLmg/Kg Sample Description: As6-50 AS6-55 AS6-60 AS6-66 TPHGasoline 672.0 312.5 1,217.0 .. 755.5 5.0 Surrogate Recovery % 85 . 94.6 95 90.1 Sample #: Date Sampled: I DL mg/Kg Sample Description: TPH Gasoline Recovery % Surrogate - at given NA - Result not available ~ Principal Analyst: Phil Acosta I I Halcyon Laboratories, :Inc. Laboratory Report Certification # 1920 I CLIENT E2C Remediation, LLC Project Name: Mr Fast 5300 Woodmere Drive; Suite 105 I Bakersfield, CA 93313 Matrix: Soil Sampled by: Gabriel Halcon I TESTS: TPH Gas by EPA 8015M 'TPH g Analysis: 7/29/2002 Date of Report: 8/2/2002 I Units: mg/Kg Sample #: 2K2-3323 2K2-3324 I Date Sampled: 7/15/2002 7/15/2002 DL mg/Kg Sample Description: AS7-40 33745 I TPH Gasoline 2.9 2.2 0.1 I I Surrogate Recovery % 99 90.8 Sample#: 2K2-3325 2K2-3326 2K2-3327 2K2-3328 Date Sampled: 7/15/2002 7/15/2002 7/15/2002 7/15/2002 DLmg/Kg I Sample Description: AS7-50 AS7-55 AS7-60 337-66 I TPH Gasoline 560.5 110.0 10.0 25.5 5.0 I Surrogate Recovery % 85.7 94.2 92.2 94.7 i Sample #: Date Sampled: Sample Description: · DL mg/Kg I TPH Gasoline .' I I' ,Surrogate Recovery % DL = Detection Limit '~Y~--~~~~ ~' 'h I ND - Non-Detect at given DL NA Result not available ' ' : ' - Pnnc~pa Ana yst P ti Acosta I Halcyon Laboratories, Inc. Laboratory Report Certification # 1920 . , · CLIENT E2C Remediation, LLC Project Name: Mr Fast 5300 Woodmere Drive, Suite 105 I Bakersfield, CA 93313 Matrix: Soil Sampled by: Gabriel Halcon I TESTS: TPH Gas by EPA 8015M TPH g Analysis: 7/30/2002 Date of Report: 8/2/2002 I Units: mg/Kg Sample#: 2K2-3329 2K2-3330 2K2-3331 2K2-3332 2K2-3333 2K2-3334 I Date Sampled: 7/16/2002 7/16/2002 7/16/2002 7/16/2002 7/16/2002 7/16/2002 DLmg/Kg Sample Description: Ass-50 ASs-5s .438-60 AS8-65 AS8-70 AS8-75 I TPH Gasoline 1.3 1.6 1.1 0.1 ND ND 0.1 1 I Surrogate Recovery % 96.3 86.1 100.1 98.2 94.3 98.9 , Sample #: Date Sampled: DL mg/Kg I Sample Description: I TPH Gasoline Surrogate. Recovery % I :Sample #: Date Sampled: DL rog/Kg ISample Description: TPH Gasoline I Surrogate RecoverY % ND - Non-Detect at given DL NA - Result not available ': Princil~al ,~nalyst: Phil Acosta 'l HalCyon Laboratories, Inc. Laboratory Report Certification # 1920 I CLIENT E2C Remediation, LLC Project Name: Mr Fast 5300 Woodmere Drive, Suite 105 I Bakersfield, CA 93313 Matrix: Soil Sampled by: Gabriel Halcon I TESTS: TPH Gas by EPA 8015M -TPH g Analysis: 7/20/2002 Date of Report: 7/21/2002 I Units: mg/Kg Sample #: 2K2-3228 2K2-3229 I Date Sampled: 7/9/2002 7/9/2002 DL mg/Kg Sample Description: VE6-35 VE6-39 ' I TPH Gasoline ND ND 0.1 I Surrogate Recovery % 93.1 95.3 Sample #: Date Sampled: DL mg/Kg I Sample Description: [ TPH Gasoline I Surrogate Recovery % i Sample #: Date Sampled: DL mg/Kg Sample Description: I TPH Gasoline I Surrogate Recovery % DL = Detection Limit i ND Non-Detect at given DL _ ' ' : Phil AcOSta NA Result not available // Principal Analyst 'l Halcyon Laboratories, Znc. Laboratory Report Certification # 1920 CLIENT EzC Remediation, LLC Project Name: Mr Fast 5300 Woodmere Drive, Suite 105 Bakersfield, CA 93313 Matrix: Soil Sampled by: Gabriel Halcon TESTS: TPH Gas by EPA 8015M :TPH g Analysis: 7/20/2002 Date of Report: 7/2 !/2002 units: mg/Kg Sample #: 2K2-3236 2K2-3237 Date Sampled: 7/9/2002 7/9/2002 DL mg/Kg Sample Description: VE7-35 VE7-39 TPH Gasoline ND ND 0.1 Surrogate Recovery % 95 85.3 Sample It: Date Sampled: DL mg/Kg Sample Description: ITPH Gasoline Surrogate Recovery % Sample #: Date Sampled: DL rog/Kg Sample Description: TPH Gasoline ;Surrogate Recovery % ND - Non-Detect at given DL · ' : ' Acosta NA - Result not available Principal Analyst Phil I I Halcyon Laboratories, ];nc. Laboratory Report Certification # 1920 I CLIENT E2C Remediation, LLC Project Name: Mr Fast 5300 Woodmere Drive, Suite 105 I Bakersfield, CA 93313 Matrix: Soil Sampled by: Gabriel Halcon I TESTS: TPH Gas by EPA 8015M 'TPH g Analysis': 7/20/2002 Date of Report: 7/21/2002 I Units: mg/Kg Sample #: 2K2-3245 2K2-3246 i Date Sampled: 7/10/2002 7/10/2002 DL rog/Kg Sample Description: w8-40 w8-43 I TPH Gasoline 0.2 0.2 0.1 I I Surrogate Recovery % 96.9 93.9 Sample #: . Date Sampled: DL mg/Kg I Sample Description: I TPH Gasoline I Surrogate Recovery % i Sample #: Date Sampled: DL rog/Kg Sample Description: I TPH Gasoline I I Surrogate Recovery % DL = Detection Limit e~~~ I ND - Non-Detect at given DL NA - Result not available Principal Analyst: Phil Acosta I I Halcyon Laboratories, [nc. Laboratory RePort I Certification # i.920 CLIENT EzC Remediation, LLC ProjeCt Name: Mr Fast 5300 Woodmere Drive, suite 105 I Bakersfield, CA 93313 Matrix: Soil Sampled by: Gabriel Halcon I TESTS: TPH Gas bY EPA 8015M .TPH g Analysis: 7/20/2002 Date of Report: 7/21/2002 I Units: mg/Kg Sample #: 2K2-3255 2K2-3256 I Date Sampled: 7/10/2002 7/10/2002 DL mg/Kg Sample Description: VE9-45 VE9-47 I TPH Gasoline 0.5 0.4 0.1 I I Surrogate Recovery % 100.6 94.5 Sample #: Date Sampled: DL mg/Kg I Sample Description: I TPH Gasoline I Surrogate Recovery % I Sample #: Date Sampled: DL mg/Kg Sample Description: I TPH Gasoline 1 I Surrogate Recovery % ] I DL Detection Limit ND - Non-Detect at given DL NA - Result not available. ~Prmc~pal~Analyst' : Phil. ' Acosta I Halcyon Laboratories, Inc, Laboratory Report Certification # 1920 CLIENT EzC Remediation, LLC Project Name: Mr Fast 5300 Woodmere Drive, Suite 105 Bakersfield, CA 93313 Matrix: Soil Sampled by: Gabriel Halcon TESTS: TPH Gas by EPA 8015M TPH g Analysis: 7/29/2002 Date of Report: 8/2/2002 Units: mg/Kg · Sample#: 2K2-3335 2K2-3337 2K2-3338 2K2-3339 2K2-3341'2K2-3342 2K2-3343 Date Sampled: 7/17/2002 7/17/2002 7/17/2002 7/17/2002 7/17/2002 7/17/2002 7/17/2002 DLmg/Kg Sample Description: MWI 8-90 IWNI 8-95 1MWI 8-I00 MWI8-105 MWI8-110 MWIS-II5 MW18-117 ~TPH Gasoline ND ND ND ' ND ND ND 0.2 0.1 SurrOgate Recovery % 83.4 98.4 87.8 96.3 98.3 96.4 91.5 Sample #: 2K2-3344 Date Sampled: 7/17/2002 DL mg/Kg Sample Description: MWl8-119 TPH Gasoline ND 0.1 Surrogate Recovery % 94.8 [ Sample #: ~Date Sampled: DL mg/Kg 'Sample DescriptiOn: TPH Gasoline Surrogate Recovery % [ D L = Det ecti on Limit ~l~~~~/ 'r/'~r~'''~ ND - Non-Detect at given DL NA Result not available ' -- : ' - P inc~pal Analyst Phd Acosta Halcyon Laboratoriesf :Inc. EPA 8260B Laboratory Report Soil Sample Results in mg/Kg Certification # 1920 CLIENT: EzC Remediation, LLC 5300 Woodmere Drive, Suite 105 Bakersfield, CA 93313 Project ID: blt Fast Report Date·: 7/31/2002 Sample ID · 3299/AS4-40 Analyto Result Method RI. Units MTBE ' ' Methyl Tert-Butyl Ether (MTBE) ND 0.! mF=~Kg BTEX Components . Benzene ND O. l mg/Kg Toluene ND 0.1 mg/Kg Ethylbenzene ND 0.1 mg/Kg m & p Xylenes ND 0.1 mg/Kg o Xylenes ND 0.1 mg/Kg Internal Standards Results % Recovery Benzene, fluoro '50.0 100% Benzene-d5, chloro- 50.0 100% 1,4-Dichlorobenzene-d4 50.0 100% Surrogate Standards Methane, dibromofluoro- 56.4 113% 1,2-Dichloroethane-d4 51.6 103% Toluene-d8 46.1 92% p-BromOfluorobenzene (BFB) 53.9 108% I I Halcyon Laboratories' :Inc' EPA 8260B Laboratory Report sou sample Results in mg/Kg Certification # 1920 CLIENT: E2C Remediation, LLC 5300 Woodmere Drive, Suite 105 · Bakersfield, CA 93313 Project ID' Mr Fast Report Date · 7/31/2002 Sample ID' 3300/AS4-45 Analyte Result Method RI. Units MTBE Methyl Tert-Butyl Ether (MTBE) ND 0. l mg/Kg BTEX Components Benzene ND 0.1 mg/Kg Toluene ND 0.1 rog/Kg Ethylbenzene 6.6 0.1 mg/Kg m & p Xylenes 18.4 0.1 rog/Kg o Xylenes 11.5 0.1 mg/Kg Internal Standards Results % Recovery Benzene, fluoro 50.0 100% ' Benzene-dS, chloro- 50.0 100% 1,4-Dichlorobenzene-d4 50.0 100% Surrogate Standards Methane, dibromofluoro- 58.7 117% 112-Dichloroethane-d4 54.0 108% Toluene-d8 52.0' 104% p-Bromofluo¢obenzene (BFB) 49.8 100% I ;I I m Halcyon Laboratories, Inc. EPA 8260B Laboratory Report so~ Sample Results in mg/Kg I Certification # 1920 I CLIENT: EzC Remediation, LLC 5300 Woodmere DriVe, Suite 105 i Bakersfield, CA 93313 Project ID: Mr Fast I Report Date · 7/31/2002 i sample ID · 3301/AS4-50 I Analyta Result Method RL Units I MTBE Methyl Tert-Butyl Ether (MTBE) ND 0.! rog/Kg ! BTEX Components I Benzene ND 0. ! mg/Kg Toluene 13.1 0. I mg/Kg I Ethylbenzene 67.8 0.1 rog/Kg m & p Xylenes 70.8 0.1 mg/Kg o Xylenes 57.9 0.1 mg/Kg ! Internal Standards Results °/o Recovery m Benzene, fluoro 50.0 100% Benzene,d5, chloro- 50.0 100% 1,4-Dichlorobenzene-d4 50.0 100% m Surrogate Standards m Methane, dibromofluoro- 40.0 80% 1,2-Dichloroethane-d4 52.1 104% Toluene-d8 · 58.0 116% m p-Bromofluorobenzene (BFB) 47.3 95% I Halcyon Laboratories, :Inc. EPA 8260B Laboratory Report soa Sample Results in mg/Kg Certification # 1920 I CLIENT: E2C Remediation, LLC 5300 WoOdmere Drive, Suite 105 I Bakersfield, CA 93313 Project ID · Mr Fast I Report Date" 8/1/2002 I Sample ID · 3302/AS4-55 I Analyte Result Method RL Units i MTBE Methyl Tert-Butyl Ether (MTBE) ND 0.1' mg/Kg BIEX Components I Benzene ND 0.1 rog/Kg Toluene 1.7 0.1 mg/Kg I Ethylbenzene 0.9 0.1 mg/Kg m & p Xylenes 2.5 0.1 mg/Kg o Xylenes 2.3 0.1 mg/Kg Internal Standards Results % Recovery I - BenZene, flu0ro 50.0 '100% Benzene-dS, chloro- 50.0 100% 1,4-Dichlorobenzene-d4 50.0 100% '1 Surrogate Standards I Methane, dibromofluoro- 52.5 105% 1,2-Dichloroethane-d4 4812 96% TOluene-d8 47.1 94% I p-Bromofluorobenzene (BFB) 51.4 103% I I I Halcyon Laboratories, Inc. EPA 8260B Laboratory Report sea Sample Results inmg/Kg '! ~ Certification # 1920 I CLIENT: E2C Remediation, LLC 5300 Woodmere Drive, Suite 105 i Bakersfield, CA 93313 Project ID: M r Fast I Report Date · 8/1/2002 il samPle ID· 3303/AS4-60 I Analyte Result Method RL Units MTBE I Methyl Tert-Butyl Ether (MTBE) ND 0.1 mg/Kg I BTEX Components 'l Benzene 0.4 0.1 mg/Kg Toluene 5.? 0.1 mg/Kg I Ethylbenzene 1.5 0.1 mg/Kg · m & p Xylenes 3.7 0.1 mod%g o Xylenes 3.2 0.1 mg/Kg I Internal Standards Results % Recovery I Benzene, fluoro 50.0 100% Benzene-d5, chloro- 50~0 100% 1,4-Dichlorobenzene-d4 50.0 100% I Surrogate Standards I Methane,. dibromofluoro- 52.2 104% 1.2-Dichloroethane,d4 52.4 105% Toluene-d8 47.9 96% i p-Bromofluorobenzene (BFB) 53.1 106% Halcyon Laboratories, :[nc. EPA 8260B Laboratory' Report so. Sample Results in rog/Kg Certification # 1920 CLIENT: EzC Remediation, LLC 5300 Woodmere Drive, Suite 105 Bakersfield, cA 93313 Project ID · Mr Fast Report Date · 8/1/2002 SamPle ID · 3304/AS4-65 Analyte Result Method RL Units MTBE Methyl Tert-Butyl Ether (MTBE) ND 0.1 mg/Kg BIEX Components Benzene 0.3 0.1 mg/Kg Toluene 14.4 0.1 mg/Kg Ethylbenzene 6.1 O. 1 mg/Kg m & p Xylenes 14.3 0.1 rog/Kg o Xylenes 11.4 0.1 mg/Kg Internal Standards Results % Recovery Benzene, fluoro 50.0 100% Benzene-dS, chloro- 50.0 100% 1,4-Dichlorobenzene-d4 50.0 100% Surrogate Standards Methane, dibromofluoro- 53.8 108% 1,2-Dichloroethane-d4 52.8 106% Toluene-d8 51.2 102% p,Brom'ofluorobenzene (BFB) 56.3 113% -. Halcyon Laboratories Chain of Custody Form Client Name: E2C Remediation, LLC 661.831.6906 fax 661.831.6234 Analysis Requested Sample Mat:rix Project Name: ~t~. 4~-,A '-5 ~ -- ~ ~ ~,~ ~' ~ Aqueous Client Address: 5300 Woodmere Dr., Suite 105. Bakersfield, CA 93313 o 8 ~ ~ e ~ ~ 8~ ~ Soil Project Manager: '~ILL ~ ~5'r,~ < < .~ ~ ~ ~ ~ ~ - ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ Acidified ,Sampler Name: ~¢~E-L ~c~-4 ~ ~ ~ ~ ~ ~ ~ ~ ¢ x % ~ ~ x x Sample Date . Sample Time Sample Description and Container Type ~ ~ ~. ~ > ~ ~ = ~ ~ Comments I Turnaround Time Requested: 24 Hour 48 Hour 5-Day Standard Relinquished BY:ReceivedBy: .~----~.,,~ ~¢'~ '~~ ' Date:7/t,/oz-'?,,/~.._ I Relinquished By: Date: ./,.~/~ v Date:////uz' Received By: Date: .Halcyon 'Laboratories, Inc. EPA 8260B Laboratory Report Soil sample Results in mg/Kg Certification # 1920 · CLIENT: EzC Remediation, LLC 5300 Woodmere Drive, Suite 105 Bakersfield, CA 93313 Project ID · Mr Fast Report Date · 8/5/2002 Sample ID · 3313/AS6-30 Analyte Result Method RL Units MTBE Methyl Tert-Butyl Ether (M.TBE) ND 0.1 mg/Kg BIEX ¢omponont$ Benzene ND 0.1 mg/Kg Toluene ND 0.1 rog/Kg Ethylbenzene ND 0.1 mg/Kg m & p Xylenes ND 0. l rog/Kg o Xylenes ND 0.1 rog/Kg Internal Standards Results O/o Recovery Benzene, fluoro 50.0 100% BenZene-d5, chloro- 50.0 100% 1,4-Dichlorobenzene-d4 50.0 100% Surrogate Standards Methane, dibromofluoro- 59.1 118% 1,2-Dichloroethane-d4 58.6 117% Toluene-d8 52.7 105% p-Bromofluorobenzene (BFB) 52.6 105% I I Halcyon LabOratories, :[nc. EPA 8260B Laboratory Report soa Sample Results in mg/Kg Certification # 1920' I CLIENT: E2C Remediation, LLC 5300 Woodmere Drive, Suite 105 i Bakersfield, CA 93313 Project ID · M r Fast I Report'Date' -8/5/2002 i Sample ID · 3316/AS6-50 I Analyte Result l~lethod RL Units MTBE Methyl Tert-Butyl Ether (MTBE) ND 0.1 mg/Kg BT£X Components I Benzene ND 0.1 mg/Kg Toluene 0.2 0.1, mg/Kg I Ethylbenzene 82 0.1 mg/Kg m & p Xylenes 64.2 0.1 mg/Kg o Xylenes '139.8 0.1 mg/Kg Internal Standards Results % Recovery m Benzene, fluoro 50.0 100% Benzene-dS. chloro- 50.0 100% 1,4-Dichlorobenzene-d4 50.0 100% I Surrogate Standards I Methanel dibromofluoro- 49.7 99% 1,2-Dichloroethane-d4 43.3 87% Toluene-d8 60.3 121% i p-Bromofluorobenzene (BFB) 61.8 124% ! I Halcyon LabOratories, Inc. * EPA 8260B Laboratory Report so,~ Sample Results in mg/Kg Certification # 1920 I CLIENT: EzC Remediation, LLC 5300 Woodmere Drive, Suite 105 i Bakersfield, CA 93313 Project ID · Mr Fast I Report Date · 8/5/2002 I Sample ID · 3317/AS6-55 I Analyte Result Method RL Units i MTBE Methyl Tert-Butyl Ether (MTBE) ND 0.1 mg/Kg BTEX Components I· Benzene 1.2 0.1 mg/Kg Toluene 114.2 0.1 rog/Kg I Ethylbenzene 76.3 0.1 rog/Kg m & p Xylenes 62.6 0.1 rog/Kg o Xylenes 63.9 0.1 rog/Kg Internal Standards Results O/o Recovery I Benzene, fluoro 50.0 100% Benzene-d5, chloro- 50.0 100% 1,4~Dichlorobenzene-d4 50.0 100% I Surrogate Standards i Methane, dibromofluoro- 49.4 99% 1,2-Dichloroethane-d4 49.8 100% Toluene-d8 52.5 · 105% I p-Bromofluorobenzene (BFB) 55.5 111% ~ Halcyon Laboratories, :[nc. EPA 8260B Laboratory RepOrt souSampleResults inmg/Kg I Certification # 1920 I CLIENT: EzC Remediation, LLC 5300 Woodmere Drive, Suite 105 i ' Bakersfield, CA 93313 Project' ID: M r Fast. I Report Date: 8/5/2002 i Sample ID' 3318/As6-60 I Analyte Result Method RL Units i MTBE ' .Methyl Tert-Butyl Ether (MTBE) ND' 0. I mg/Kg BTEX Components I Benzene 6.5 0.1 mg/Kg Toluene 318.1 0.1 mg/Kg I Ethylbenzene 81.8 0.1 rog/Kg m & p Xylenes 78.0 0.1 mg/Kg o Xylenes 137.6 0.1 mg/Kg Internal Standards Results % Recovery i Benzene, fluoro 50.0 100% Benzene-d5, chloro- 50.0 100% 1,4-Dichlorobenzene-d4 50.0 100% I SUrrogate Standards I Methane, dibromofluoro- 51.0 102% 1,2-Dichloroethane-d4 50.0 100% Toluene-d8 55.8 112% I 'p-Bromofluorobenzene (BFB) 59.1 118% Halcyon Laboratories, Inc. EpA 8260B Laboratory Report soi~Sample Results in mg/Kg Certification # 1920 . CLIENT: E2C Remediation, LLC 5300 Woodmere Drive, Suite 105 Bakersfield, CA 93313 Project ID · Mr Fast 'Report Date · 8/12/2002 Sample ID · 3319/AS6-66 Analyto Result Method RL Units MTBE Methyl Tert-Butyl Ether (MTBE) ND 0.1 rog/Kg BTEX Components Benzene 0.2 0.1 rog/Kg Toluene 7.3 0.1 rog/Kg Ethylbenzene 2.7 0. i rog/Kg m & p Xylenes 6.1 0.1 rog/Kg o Xylenes 5.1 0.1 rog/Kg Internal Standards Results % Recovery Benzene, fluoro 50.0 100% Benzene-d5, chloro- 50.0 100% 1,4-Dichlorobenzene-d4 50.0 100% Surrogate Standards Methane, dibromofluoro- 54.7 109% 1,2-Dichloroethane-d4 48.8 98% Toluene-d8 49.1 98% p-Bromofluorobenzene (BFB) 54.3 109% Halcyon Laboratories Chain of Custody Form Client Name: E2C Remedial. ion, LLC 661.851.6906 fax 661.831.6234 Analysis Requested -- Sample Matrix Pr°jectName: [~,~Z -J::::r~s'F- ~- .~- Client Address: 5300 Woodmere Dr.', Suite 105. Bakersfield, CA 93313 ~. ~. ~ ,-, · Project Manager: ~ iL L L~ ~ 5'~ o Sample Da~e 8ample T~me 8am le DesodP~on and ~onta~ner Type ~ ~ommen~s ~ ~ Hour 48 Hour 5-Day Standard Relinquished By: ~Z~. ~J ~ Date: 7~/~ Relinquished By:. Date: Received By: ~~ Date:~ - Received By: Date: Halcyon Laboratories, Inc. EPA 8260B Laboratory Report Soil Sample Results in mg/Kg Certification # 1920 CLIENT: E2C Remediation, LLC 5300 Woodmere Drive, Suite 105 BakerSfield, CA 93313 Project ID · Mr Fast Report Date: 8/5/2002 Sample ID: 3323/AS7-40 Analyte Result Method RL Units MTBE . Methyl Tert-Butyl Ether (MTBE) ND 0. l mg/Kg . BTEX Componenf~ Benzene ND 0.1 mg/Kg Toluene ND 0.1 rog/Kg Ethylbenzene ND 0.1 m'g/Kg m & p Xylenes ND 0.1 rog/Kg o Xylenes ND 0.1 mg/Kg Internal Standards Results O/o Recovery Benzene, fluoro 50.0 100% Benzene-d5, chloro- 50.0 100% 1,4-DichlorObenzene-d4 50.0 100% Surrogate Standards Methane, dibromofluoro- 60.3 121% 59.2 118% 1 ,2-Dichloroethane-d4 Toluene-d8 · 52.4 105% p-Bromofluorobenzene (BFB) 54.9 110% 'Halcyon Laboratories, :Inc. EPA 8260B Laboratory Report' Soil Sample Results in mg/Kg Certification # 1920 CLIENT: E2C Remediation, LLC 5300 Woodmere Drive, Suite 105 Bakersfield, CA 93313 Project ID' Mr Fast RepOrt Date · 8/5/2002 Sample ID · 3324/AS7-45 Analyte Result Method RL Units MTBE Methyl Tert-Butyl Ether (MTBE) ND. 0.1 mg/Kg BIEX Components Benzene ND 0.1 mg/Kg Toluene 1.7 0.1 mg/Kg Ethylbenzene 0.2 0.1 mg/Kg m & p Xylenes 0.4 0.1 mg/Kg o Xylenes 0.4 0.1 rog/Kg Internal Standards Results % Recovery Benzene, fluoro 50.0 100% Benzene-dS, chlorO- 50.0 100% 1,4-Dichlorobenzene-d4 50.0 100% . Surrogate Standards Methane, dibromOfluoro- 60.0 120% 1,2-DichlorOethane-d4 58.9 118% Toluene-d8 53.4 107% p-Bromofluorobenzene (BFB) 52.4 105% I i Halcyon Laboratories, :Inc. EPA 8260B Laboratory RepOrt sonSample Results in mg/Kg I Certification # 1920· CLIENT: EzC Remediation, LLC 5300 Woodmere Drive, Suite 105 Bakersfield, CA 93313 Project ID · Mr Fast Report Date · 8/5/2002 Sample ID: 3325/AS7-50 Analyte Result Method RL Units MTBE Methyl Tert-Butyl Ether (MTBE) ND 0.1 mg/Kg BTEX Components Benzene ND 0. l mg/Kg Toluene 53 0.1 mg/Kg Ethylbenzene 74.2 0.1 mg/Kg m & p Xylenes 36.5 0.1 mg/Kg O Xylenes 109.7 0.1 mg/Kg Internal Standards Results % Recovery Benzene, fluoro 50.0 100% Benzene-d5, chloro- 50.0 100% 1,4-Dichlorobenzene-d4 50.0 100% Surrogate Standards Methane, dibromofluoro- 57.9 116% 1,2-Dichloroethane-d4 59.1 118% Toluene-d8 50.1: 100% p-Bromofluorobenzene (BFB) 49.4 99% I I ~ Halcyon Laboratories, :Inc, EPA 8260B Laboratory Report Soil Sample Results in mg/Kg I Certification # 1920 i I CLIENT: E2C Remediation, LLC 5300 Woodmere Drive, Suite 105 'l Bakersfield, CA 93313 Project ID: Mr Fast I. Report Dal~e · 8/5/2002 I Sample ID · 3326/AS7-55 I Result Method RL Units Analyte i MTBE Methyl Tert-Butyl Ether (MTBE) ND 0.1 mg/Kg ! BTEX Components I Benzene 0.3 0.1 rog/Kg Toluene · 3.8 0.1 rog/Kg I Ethylbenzene 2.2 0.1 mg/Kg m & p Xylenes 1.3 0.1 mg/Kg o Xylenes 1.1 0.1 rog/Kg I Internal Standards Results % Recovery I fluoro 50.0 100% Benzene, Benzene-d5, chloro- 50.0 100% 1,4-Dichlorobenzene-d4 ' 50.0 100% I Surrogate Standards I Methane, dibromofluoro- 55.9 112% 1,2-Dichloroethane-d4. 54.5 109% 51.3 103% Toluene-d8 .. I P-Bromofluorobenzene (BFB) 52.0 104% 1 I HalCYon Laboratories, [nc. EPA 8260B Laboratory Report so. Sample Results in mg/Kg Certification # 1920 CLIENT: E2C Remediation, LLC 5300 Woodmere Drive, Suite 105 Bakersfield, CA 93313 Project ID: 'Mr Fast Report Date: 8/5/2002 ' Sample ID: 3327/AS7-60 Analyte Result Method RL Units MTBE Methyl Tert-Butyl Ether (MTBE) ND 0.1 mg/Kg BTEX Components Benzene ND 0.1 rog/Kg Toluene 0.1 0.1 rog/Kg Ethylbenzene 0.3 0.1 mg/Kg m & p Xylenes 0.1 O. 1 rog/Kg o Xylenes 0.1 0.1 rog/Kg Internal Standards Results % RecOvery Benzene, fluoro 50.0 100% Benzene-dS, chloro- 50.0 100% 1,4-Dichlorobenzene-d4 50.0 100% Surrogate Standards Methane, dibromofluoro- '58.5 117% 1,2-Dichloroethane-d4 58.3 117% Toluene-d8 48.6 97% p-Bromofluorobenzene (BFB) 52,8 106% I Halcyon Laboratoriesf ]:nc. EPA 8260B Laboratory Report soi, Sample Results in mg/Kg Certification # 1920 I CLIENT: EzC Remediation, LLC 5300 Woodmere Drive, Suite 105 i Bakersfield, CA 93313 Project ID: M r Fast I Report Date · 8/5/2002 I Sample ID · 3328/AS7-66 I Analyte Result Method RL Units MTBE : I Methyl Tert-Butyl Ether (MTBE) ND 0.1 mg/Kg ! BTEX Components I Benzene ND 0.1 mg/Kg Toluene 0.5 0. i rog/Kg I Ethylbenzene 0.9 0.1 rog/Kg m & p Xylenes 0.6 0.1 rog/Kg o Xylenes .0.5 0.1 mg/Kg I Internal Standards Results e/o Recovery I Benzene, fluoro 50.0 100% Benzene-d5, chloro- 50.0 100% 1,4-Dichlorobenzene-d4 50.0 100% I SurrOgate Standards I Methane, dibromofluoro- 59.7 119% 1 ,-2-Dichloroethane-d4 57.6 ! 15% Toluene-d8 · 48.0 96% p-Bromofluorobenzene (BFB) 54.5 109% ! I .m mmm mm m m mm mm mm m m mm m m m m mm mmm m mm Halcyon Laboratories Chain of Custody Form Client Name: E2C Remediati°n, LLC 661.831.6906 fax 661.831.6234 Analysis Requested Sample Matrix Project Name: Iv, cz_ ,¢'~,~ ~ ,', ~ Ig Aqueous Client Address: 5300 Woodmere Dr.. Suite 105. Bakersfield, CA 93313 0 I- Sample Date Sample Time Sample Description and Container Type m ~ ~- ~- > ~ ,.. :~ ~, m Comments ')( ~o ITurnaround Requested: 48 Hour 5-Day ~ Standard 24 Hour Relin,quishedBy: ~C_~ ~'-[.~"~ Date.:7~',~{~/,~'z-.IRelinquishedBy: Date: Received By: ..~/~ Date: ¢5 ~;/._ Received By: Date: /,,- Halcyon Laboratories, :[nc. EPA 8260B Laboratory Report so. Sample Results in mg/Kg Certification .# 1920 CLIENT: EzC Remediation, LLC 5300 Woodmere Drive, Suite 105 Bakersfield, CA 93313 Project ID · Mr Fast Report Date: 8/5/2002 Sample ID · 3329/AS8-50' Analyte Result Method RL Units MTBE : . Methyl Tert-Butyl Ether (MTBE) ND 0.1 mg/Kg BIEX ¢omponent~ Benzene ND 0.1 m~Kg Toluene 0.1 0.1 rog/Kg Ethylbenzene 0.3 O. l rog/Kg m & p Xylenes 0.6 0.1 m~/Kg O Xylenes 0.~ 0. I m~/K~ Internal Standards Results % Recovery Benzene, 50.0. fluoro 100% Benzene-d5, chloro- 50.0 100% 1,4-Dichlorobenzene-d4 50.0 100% Surrogate Standards Methane, dibromofluoro- 53.9 108% 1,2-Dichloroethaned4 55.5 111% Toluene-d8 45,6 91% p-Bromofluorobenzene (BFB) 53.7 107%' m Halcyon Laboratories, Inc, EPA 8260B Laboratory Report Soil Sample ResultS in mg/Kg Certification # 1920 I CLIENT: E:C Remediation, LLC 5300 Woodmere Drive, Suite 105 I Bakersfield, CA 93313 · Project ID · Mr Fast I Report Date · 8/5/2002 I Sample ID: 3330/AS8-55 I Result Method RL UnitS Analyte ' I MTBE Methyl Tert-Butyl Ether (MTBE) ND 0.1 rog/Kg BTEX Components I Benzene ND 0.1 rog/Kg Toluene 0.1 0.1 mCKg I Ethyl benzene ND 0.1 mg/Kg m & p Xylenes 0.1 0. l mg/Kg o Xylenes 0.1 0. ! rog/Kg Internal Standards Results % Recovery I Benzene, fluoro 50.0 100% Benzene-d5, chloro- '50.0 100% 1,4-Dichlorobenzene-d4 50.0 100% I surrogate Standards I Methane, dibromofluoro- 60.2 120% 1,2-Dichloroethane-d4 . 55.6 111% Toluene-d8 4.7.6 95% i p-Bromofluorobenzene (BFB) 56.5 113% .I I Halcy°n .Laboratories' :Inc. EPA 8260B Laboratory Report soi~Sample Results in mg/Kg I Certification # 1920 I CLIENT: EzC Remediation~ LLC 5300 Woodmere Drive, Suite 105 I Bakersfield, CA 93313 Project ID: Mr Fast I Report Date · 8/5/2002 I Sample ID · 3331/AS8-60 Analyte Result Hethod RI. Units I MTBE Methyl Tert-Butyl Ether (MTBE ND 0. l m~u~.g ! BTEX Components ! Benzene 0.1 0.1 mg/Kg Toluene ND 0.1 m~/Kg I 0.1 mg/Kg Ethylbenzene 0.4 m & p Xylenes 0.2 0. I mg/Kg o Xylenes ND 0.1 rog/Kg ! Internal Standards Results % Recovery I Benzene, fluoro 50.0 100% Benzene-d5, chloro- 50.0 100% 1,4-Dichlorobenzene-d4 50.0 100% I Surrogate Standards I Methane, dibromofluoro- 60.6 121% 1,2-Dichloroethane-d4 58.4 117% Toluene-d8 52.9 106% Ip-Bromofluorobenzene (BFB) 52.7 :1.05% ~ Halcyon Laboratories~' Znc. EPA 8260B Laboratory Report Soil.Sample ReSults in mg/Kg I Certification # 1920 I CLIENT: EzC Remediation, LLC 5300 Woodmere DriVe, Suite 105 '1 Bakersfield, CA 93313. Project ID · Mr Fast I Report Date · 8/5/2002 Sample'ID · 3332/AS8-65 I Analyte Result Method RL Units I MTBE Methyl Tert-Butyl Ether (MTBE) ND 0.1 mg/Kg I i BTEX Components Benzene ND 0.1 mg/Kg Toluene ND 0.1 mg/Kg I Ethylbenzene ND 0. I mg/Kg · m & p Xylenes ND 0.1 mg/Kg o Xylenes ND 0.1 rog/Kg I :Internal Standards ReSults % Recovery I ' Benzene, fluoro 50.0 100% Benzene-d5, chloro- 50.0 100% i 1,4-Dichlorobenzene-d4 50.0 100% Surrogate Standards . I Methane, dibromofluoro- 61.7 123% 1,2-Dichloroethane-d4 61.8- 124% Toluene-d8 54.1 108% I p-Brom0fluorobenzene (BFB) 52.6 105% I Halcyon. Laboratories, :[nc" EPA 8260B Laboratory Report so. Sample Results in mg/Kg .Certification # 1920 CLIENT: EzC Remediation, LLC 5300 Woodmere Drive, Suite 105 Bakersfield, CA 93313 Project ID · Mr Fast Report Date: 8/5/2002 Sample ID · 3333/AS8-70 Analyte Result Method RL Units MTBE .. Methyl Tert-Butyl Ether (MTBE) ND 0.1 mg/Kg BTEX Components Benzene ND 0.1 rog/Kg Toluene ND 0.1 m~Kg Ethylbenzene ND 0.1 rog/Kg m & p Xylenes 0.1 0.1 rog/Kg o Xylenes ND 0. I m od~Kg Internal Standards Results % Recovery Benzene, fluoro 50.0 100% Benzene-d5, chloro- 50.0 100% 1,4-Dichlorobenzene-d4 50.0 100% Surrogate Standards Methane, dibromofluoro- 59.4 119% 1,2-Dichloroethane-d4 61.4 123% Toluene-d8 54.6 109% p=Br°mofluorobenzene (BFB) 51.7 103% .Halcyon Laboratories :[nc. EPA 8260B Laboratory Report Soil Sample Results in mg/Kg Certification # 1920 EzC Remediation, LLC CLIENT: 5300 Woodmere Drive, Suite 105 Bakersfield, CA 93313 Project ID: Mr Fast Report Date - 8/5/2002 Sample ID · 3334/As8-75 Analyto Result ~ethod Rt. Unit~ MTBE Methyl Tert-Butyl Ether (MTBE) ND 0.1 rog/Kg BTEX Components Benzene . ND O. 1 Toluene ND 0. ! mg/Kg Eth¥1benzerie ND 0.1 lng/Kg m & p Xylenes ND 0.1 mg/Kg o Xylenes ND 0. I rog/Kg Internal Standards Resull:s % Recovery fluoro 50.0 100% Benzene, Benzene-d5, chloro- 50.0 100% 1,4-Dichlorobenzene-d4 50.0 100% Surrogate Standards Methane, dibromofluoro- 61.7 123% 1,2-Dichloroethane-d4 60.5 '121% Toluene--d8 52.8 106% p-Bromofluorobenzene (BFB) 51.9 104% II :aleC] :XB paA!aoa~l ' :@1eCl :X8 paA!aOa~l :alea :X8 paqqnbu~la~ ~o/~//L:alea ' ~ :XB paqqnbu~ia~ ~ pJepuels Xea-g - JnoH 9~ JnoH ~ :palsanba~ a~!Z punoJ~ ' 0 ~ - B3q o ~ b-O sluawwoo odXz JaUleluoo P~e'~olidposafl aldwe9 aw!l aldwe9 alea aldwe9 .. Pa~J~P]OV ~ ~o~~ ~ ~ ~ ~~ :a~eNJaldme9 snoanbv ~ g ~gg6 VO 'Pla~jsJa~eB '.g0~ al~n9 "Ja aJampooM 0099 :ssaJppv lUallO xple~ aldme9 ~S v~- ~ :ameN 10a[OJd PalsanbaH s}SXleUV ~g~9' Lgg' L99 xej 9069' Lgg' ~99 Oq~ 'UO~le}pamaH O~3 :ameN lUa~lO ' JOJ Xpolsno }o Ll~e~O sa~JoleJoqe~ uoXoleH., ~ . Halcyon ·Laboratories, :[nc. EPA 8260B Laboratory Report soi~ sampleResults inrog/Kg ' I Certification#1920 I CLIENT: EzC Remediation, LLC 5300 Woodmere Drive, Suite 105 i Bakersfield, CA 93313 Project ID: M r Fast I RePort Date: 7/30/2002 i Sample ID · 3228NE6-35 il I Analyte Result Method RL Units MTBE Methyl Tert-Butyl Ether (MTBE) ND 0.1 mg/Kg BTEX Components I Benzene ND 0.1 mg/Kg Toluene ND 0.1 mg/Kg I Ethylbenzene ND 0. ! mg/Kg m & p Xylenes ND 0.1 mg/Kg o Xylenes ND 0.1 rog/Kg Internal Standards Results % Recovery I Benzene, fluoro 50.0 100% Benzene-d5, chloro- 50.0 100% 1,4-Dichlorobenzene-d4 50.0 100% I · Surrogate Standards I Methane, dibromofluoro- 53.0 106% 1,2-Dichloroethane-d4 51.9 104% Toluene-d8 51.5 103% I p-Bromofluorobenzene (BFB) 48.0 96% HalcyOn Laboratories,. :Inc. 'EPA 8260B Laboratory Report soi~ Sample Results in mg/Kg Certification # 1920 I CLIENT: E2C Remediation, LLC 5300 Woodmere Drive, Suite 105 i Bakersfield, CA. 93313 Project ID · Mr Fast I Report Date · 7/30/2002 ISample ID · 3229/VE6-39 4 I Analyte Result I~lethod RL t/nits I MTBE Methyl Tert-Butyl Ether (MTBE) ND 0.1 rog/Kg I BTEX Components I Benzene ND 0.1 mg/Kg Toluene ND 0.1 o mg/Kg I Ethylbenzene ND 0.1 mg/Kg m & p Xylenes ND 0.1 rog/Kg o Xylenes ND 0.1 rog/Kg I Internal Standards Results % Recovery I Benzene, fluoro 50.0. 100% Benzene-d5, chloro- 50.0 100% 1,4-Dichlorobenzene-d4 50.0 100% I Surrogate standards I Methane, dibromofluoro- 55.6 111% 1,2~Dichloroethane-d4 5112 102% Toluene-d8 49.9 100% I p-Bromofluorobenzene .(BFB) 49.2 98% I i ~ ~ m ,=- ~ m ~ ~ ma ~ ~ ~ ~ ~ m '=' ~ 'Halcyon LaboratOries . Chain of. Custody Form Client Name: E2C Remediation, LLC 661.831.6906 fax 661.831.6234 Analysis Requested Sample Matrix Project Name: ~ ,-¢"~S1'-" ' ~' .~' --. ~ ¢, ~ ~ Aqueous ~..ClientAddress: 5300 Woodmere Dr., Suite105. Bakersfield, CA 93313 ~ ~ .,~ ~ ~ ~< Manager: ~ ~ ~ ~ ~ ~ ~Soil Project ~ ( gL U2¢ ¢0~ ~ ~ ~ < SamPler Name: A~E-~ A~c~ x Sample Date' Sample Time Sample Description and Container Type m = ~ ~ > ~ ~ ~ ~ m Comments I Turnaround Time RequeSted: 24 Hour 48 Hour 5-Day Standard Relinquished ~~.~ BY: ((~.td; ~~ Date:"7/~ to-z-- Relinquished By: Date: Received By:. Date: ~/'~'¢/~ ~ Received By: Date: -Halcyon Laboratories, :[nc. " EPA 8260B Laboratory Report soi~ SamPle Results in rog/Kg Certification # 1920 CLIENT: E2C Remediation, LLC 5300 Woodmere Drive, Suite 105 I Bakersfield, CA 93313 Project ID' Mr Fast I Report Date · 7/30/2002 I Sample ID · 3236/VE7-35 I Analyte Result Method RL Units i MTBE Methyl Tert-Butyl Ether (MTBE) ND 0.1 ! BTEX Components I Benzene ND 0. ] rog/K§ Toluene ND 0.1 i Ethylbenzene ND 0. m,..~<~g m & p Xylenes ND 0.1 o Xylenes ND 0.1 m~/Y,g ! Internal Standards Results % Recovery I Benzene, fluoro 50.0 100% Benzene-dS, chloro- 50.0 100% 1,4-Dichlorobenzene-d4 5010 100% Surrogate Standards I Methane, dibromofluoro- 54.9 110% 1,2-Dichloroethane-d4 51,4 103% Toluene-d8 52.6 105% i p-Bromofluorobenzene (BFB) 50.2 100% i HalcyOn Laboratories, :Inc. EPA 8260B Laboratory Report Soil Sample Results in mg/Kg Certification # 1920 - CLIENT: EzC Remediation, LLC 5300 Woodmere Drive, Suite 105 'Bakersfield, CA 93313 Project ID · Mr Fast Report Date · 7/30/2002 Sample ID · 3237/VE7-39 Result Method RL Units Analyte MTBE ':~ ' Methyl Tert-Butyl Ether (MTBE) ND 0.1 mg/Kg BIEX Components Benzene ND O. 1 mg/Kg Toluene ND O. 1 mg/Kg Ethylbenzene ND 0.1 mg/Kg m & p Xylenes ND 0.1 mg/~g o Xylenes ND 0.1 mg/Kg Internal Standards Results % Recovery Benzene, fluoro 50.0 100% Benzene-d5, chloFo- 50.0 100o/o 1,4-Dichlorobenzene-d4 50..0 100% Surrogate Standards Methane, dibromofluoro- 56.8 114% 1,2-Dichloroet hane-d4 55.8 112% Toluene-d8 54.8 110% p. BFomofluor°benzene '(BFB) 54.1 108% I I Halcyon Laboratories Chain of Custody Form Client Name: E2C Remediation, LLC 661.831.6906 fax 661.831.6234 Analysis Requested Sample Matdx Project Name: i'~ ~z .¢',,~ s ~ ~ ~ ~ ~ Aqueous Client Address: 5300 Woodmere Dr., Suite 105. Bakersfield, CA 93313 Sample Date Sample Time sample Description and Container Type ~ = ~ ~ > ~ ~ = 3 ¢ Comments . [ Turnaround Time Requested: 24 Hour .., 48 Hour RelinquiShed By:~/~6~ ~ Date:,/,/, Received By:. Date: .~~ Received By: Date: Halcyon LaboratOries, Inc. EPA 8260B Laboratory Report so~ Sample Results in mg/Kg Certification # 1920 CLIENT: E2C Remediation, LLC 5300 Woodmere Drive, Suite 105 Bakersfield, CA 93313 Project ID" I~Ir Fast Report Date · 7/30/2002 Sample ID · 3245/VE8-40 Analyte .Result Method RL Units IMTBE .. Methyl Tert-Butyl Ether (MTBE) ND 0.1 mg/Kg ! i BTEX Components Benzene ND 0.1 mo~Kg Toluene ND 0.1 rog/Kg I Ethylbenzene' ND O. 1 mg/Kg m & p Xylenes ND 0.1 rog/Kg o Xylenes ND 0.1 rog/Kg ! Internal Standards Results % Recovery I Benzene, fluoro 50.0 100% Benzene-dS, chloro- 50.0 100% i 1,4-DichlOrobenzene-d4 50.0 100% Surrogate Standards I Methane, dibromofluoro- 56.5 113% 1,2-Dichloroethane-d4 55.3 :L11% Toluene-d8 54,0 108% I p-Bromofluorobenzene (BFB) 56.7 113% I . Halcyon Laboratories~ ]:nc.' EPA 8260B Laboratory Report so. Sample Results in mg/Kg Certification # 1920 · .CLIENT: E'2C Remediation, LLC 5300 Woodmere Drive, Suite 105 Bakersfield, CA 93313 Project ID · Mr Fast Report Date · 7/30/2002 Sample ID · 3246/VE8-43 Analyte Result Method RL Units MTBE Methyl Tert-Butyl Ether (MTBE) ND 0. I mg/Kg BTEX cOmponents Benzene ND 0. I rog/Kg Toluene ND 0.1 rog/Kg Ethylbenzene ND 0.1 mg/Kg m & p Xylenes ND 0.1 mg/~g o Xylenes ND 0.1 rog/Kg Internal Standards Results % Recovery Benzene, fluoro 50.0 100% Benzene-dS, chloro- . 50.0 100% 1,4-Dichlorobenzene-d4 50.0 100% Surrogate,Standards Methane, dibromofluoro- 57.6 115% 1,2-Dichloroethane-d4 57.2 114% Toluene-d8 50.0 1.00% p-Bromofluorobenzene (BFB) 51.8 1.04% Halcyon Laboratories Chain of Custody Form " Client Name: E2C Remediation, LLC 661.831.6906 fax 661.831.6234 Analysis Requested · -- Sample Matdx Pi-ojeci, Name: ~ (Z. fi':--~ ~ ~ ~ ~ ~ ~ ~ Aqueous Client Address: 5300 Woodmere Dr., sUite 105. Bakersfield, CA 93313 ' ~ ~ ~ ~ ~ Soil Sampler Name: ~,~ ~ Cf go - ¢ U c~ ~ x ~ o ~ = ~ ~ ~ ~ ~ ~ Acidified X 8ample Date 8ample Time 8ample Description and Container Type .,~., . Comments ~Time Requested: 24 Hour 48 Flour 5-Day Standard Turnaround ' B lq - / / . Halcyon Laboratories, :[nc. EPA 8260B Laboratory RePort Soil Sample Results in mg/Kg Certification # 1920 CLIENT: EzC Remediation, LLC 5300 Woodmere Drive, Suite 105 '- Bakersfield, CA 93313 Project ID · Mr Fast Report Date · 7/31/2002 Sample ID · 3255/VE9-45 Analyte Result Method RL Units MTBE Methyl Tert-Butyl Ether (MTBE) ND 0.1 mg/Kg BTEX Components Benzene ND 0. ! rog/Kg Toluene ND 0.1 rog/Kg Ethylbenzene ND 0.1 . mg/Kg m & p Xylenes ND 0.1 mg/Kg o Xylenes ND 0.1 rog/Kg Internal Standards Results % Recovery Benzene, fluoro 50.0 100% Benzene-d5, chloro- 50.0 100% 1,4-Dichlorobenzene-d4 50.0 100% Surrogate StandardS Methane, dibromofluoro- 57.1 114% 1,2-Dichloroethane-d4 52.3 105% Toluene-d8 ' 50.0 100% p-Bromofluorobenzene (BFB) 50.3 101% Halcyon Laboratories, Inc.. EPA 8260B Laboratory Report so~ Sample Results in mg/Kg Certification # 1920 CLIENT: ' E2C Remediation, LLC 5300 Woodmere Drive, Suite 105 Bakersfield, CA 93313 Project ID" Mr Fast Report Date · 7/31/2002 Sample ID · 3256/VE9-47 Analyte Result . Method RL Units MTBE Methyl Tert-Butyl Ether (MTBE) ND 0. I mg/Kg BTEX Components Benzene ND 0.1 rog/Kg Toluene ND 0.1 rog/Kg Ethylbenzene ND 0.1 mg/Kg m & p Xylenes ND 0.1 mg/Kg o Xylenes ND 0.1 mg/Kg Internal Standards Results % Recovery Benzene, fluoro 50.0 100% Benzene-dS, chloro- 50.0 100% 1,4-Dichlorobenzenerd4 50;0 100% Surrogate Standards Methane, dibromofluoro- 57.3 115% 1,2-Dichloroethane-d4 53.8 108% Toluene-d8 50.9 102% p-Bromofluorobenzene (BFB) 53.4 107% Halcyon Laboratories Chain of Custody FOrm Client Name: E2C Remediation, LLC 661.831.6906 fax 661.831.6234 Analysis Requested Sample Matrix Project Name: 1P~CL '~-¢,~ 'r- ~ r~ ~ Aqueous Client Address: 5300 Woodmere Dr., Suite 105. Bakersfield, CA 93313 ~ ~ ~ Soil Project Manager:. ~ ~So~ .... ~ ~ ~ D ,.~ Acidified Sample Date Sample Time Sample Description and Container Type ~ = ~ ~ > ~ ~ = ¢ ~ Comments ITurnarOund Time Requested: 24 Hour ~ 48 Hour __ 5-Day Standard IRelinquishedB~.~~ Da!e:' ~/~/¢/'Z. I Relinquished By: Date: .. Halcyon Laboratories, Inc. EPA 8260B Laboratory Report Soil Sample Results in mg/Kg ' Certification # 1920 CLIENT: .E2C Remediation, LLC 5300 Woodmere Drive, Suite 105 Bakersfield, CA 93313 Project ID · Mr Fast Report Date · 8/5/2002 Sample ID · 3335/MW18-90 Analyte Result Method Rt. Units MTBE Methyl Tert-Butyl Ether (MTBE) ND 0.1 mg/Kg BTEX Components Benzene ND 0.1 rog/Kg Toluene ND 0.1 rog/Kg Ethylbenzene ND 0. I mg/Kg m & p Xylenes ND 0.1 mg/Kg o Xylenes ND 0.1 mg/Kg Internal Standards Results % Recovery Benzene, fluoro 50.0 100% Benzene-dS, chloro- 50.0 100% 1,4-Dichlorobenzene-d4 50.0 100% Surrogate Standards · Methane, dibromofluoro- 59.4 119% 1,2-Dichloroethane-d4 57.8 116% Toluene-d8 53.0 106% p-Bromofluor°benzene (BFB) 50.3 101% I Halcyon Laboratories~ :[nc. EPA 8260B Laboratory Report -Soil Sample Results in mg/Kg Certification # 1920 CLIENT: ' EzC Remediation, LLC 5300 Woodmere Drive, Suite 105 Bakersfield, CA 93313 Project ID · Mr Fast Report Date · 8/5/2002 Sample ID · 3337/Mw18-95 Analyte Result I~lethod RL Units MTBE Methyl Tert-Butyl Ether (MTBE) ND 0.1 mg/Kg BIEX Components Benzene ND 0.1 mg/Kg Toluene ND 0.1 rog/Kg Ethyl benzene ND 0.1 mg/Kg m & p Xylenes ND 0.1 mg/Kg o Xylenes ND 0.1 rog/Kg Internal Standards Results % Recovery Benzene, fluoro 50.0 100% Benzene-dS, chloro- 50.0 100% 1,4-Dichlorobenzene-d4 50.0 100% Surrogate Standards Methane, dibromofluoro- 60.8 122% 1,2-Dichloroethane-d4 ' 59.3 ' 119% Toluene-d8 51.1 102% p-Bromofluorobenzene (BFB) 51.0 102% HalcYon Laboratories, Inc; EPA 8260B Laboratory Report soi~ Sample Results in mg/Kg CertificatiOn # 1920 ,CLIENT: EzC Remediation, LLC 5300 Woodmere Drive, Suite 105 Bakersfield, CA 93313 Project ID: M r Fast Report Date · 8/5/2002 Sample ID · 3338/MW18-100 Analyte Result Method RL Units MTBE : · Methyl Tert-Butyl Ether (MTBE) ND 0.1 rog/Kg BTEX Components Benzene ND 0.1 mg/Kg Toluene ND 0.1 mg/Kg Ethylbenzene ND 0.1 rog/Kg m & p Xylenes ND 0.1 rog/Kg o Xylenes ND 0.1 rog/Kg Internal Standards Results % Recovery Benzene, fluoro 50.0 ' 100% Benzene-d5, chloro- 50.0 100% 1,4-Dichlorobenzene-d4 50.0 100% Surrogate Standards Methane, dibr°mofluoro- 59.6 119% 1.2-Dichloroethane-d4 58.8 118% Toluene-d8 ,t6.2 92% p-Bromofluorobenzene (BFB) 54.0 :t08% Halcyon Laboratoriesi.lnc. EPA 8260B Laboratory Report so. Sample Results in mg/Kg Certification # 1920 · , ~ CLIENT: E2C Remediation, LLC · 5300· Woodmere Drive, Suite 105 I Bakersfield, CA 93313 Project ID · Mr Fast I Rep°rt Date· 8/5/2002 · Sample ID: 3339/MW18-105 1 I Analyte Result Method RL Units MTBE I Methyl Tert-Butyl Ether (MTBE) ND 0.1 mg/Kg I BTEX Components Benzene ND 0.1 mg/Kg Toluene ND 0.1 mg/Kg I Ethylbenzene ND 0.1 rog/Kg m & p Xylenes ND 0.1 rog/Kg o Xylenes ND 0. ! rog/Kg I Internal Standards Results % Recovery I Benzene, fluoro 50.0 100% Benzene-d5, chloro- 50.0 :1.00% 1,4-Dichlorobenzene-d4 50.0 100% I Surrogate Standards i Methane, dibromofluoro- 58.0 116% 1,2-Dichloroethane-d4. · 56.7 1'13% . Toluene-d8 46.1 92% i p-Brom'ofluorobenzene (BFB) 52.7 105% I 1 Halcyon Laboratories, Inc. EPA 8260B Laboratory Report Soil Sample Results in mg/Kg' Certification # 1920 CLIENT: EzC Remediation, LLC 5300 Woodmere Drive, Suite 105 Bakersfield, CA 93313 Project ID: Mr Fast Report Date · 8/6/2002 Sample ID ' 3341/MW18-110 Analyte Result Method RL Units MTBE Methyl Tert-Butyl Ether (MTBE) ND 0.1 mg/Kg BTEX Components Benzene ND 0.1 rog/Kg Toluene ND 0.1 mg/Kg Ethylbenzene 'ND 0.1 rog/Kg m & p Xylenes ND 0.1 rog/Kg o Xylenes ND 0.1 rog/Kg Internal Standards Results % Recovery Benzene, fluoro 50.0 100% Benzene-d5, chloro- 50.0 100% 1,4-Dichlorobenzene-d4 50.0 100% SurrOgate Standards Methane, dibromofluoro- 58.9 118% 1,2-Dichloroethane-d4 57.5 115% Toluene-d8 52.4 105% p-Bromofluorobenzene (BFB) 52.8 106% Halcyon Laboratories, [nc. EPA 8260B Laboratory Report soi, Sample Results in mg/Kg Certification # 1920 CLIENT: E2C Remediation, LLc 5300 Woodmere Drive, Suite 105 Bakersfield, CA 93313 Project ID: M r Fast Report Date: 8/6/2002 Sample ID · 3342/MW18-115 Analyte Result Method RI. Onits MTBE Methyl Tert-Butyl Ether (MTBE) ND 0. l rog/Kg BTEX Components Benzene ND 0.1 rog/Kg Toluene ND 0.1 . rog/Kg Ethylbenzene ND 0.1 mg/Kg m & p Xylenes ND 0.1 rog/Kg o Xylenes ND 0.1 rog/Kg Internal Standards Results % Recovery BenZene, fluoro 50.0 100% Benzene-d5, chloro- 50.0 100% 1,4-Dichlorobenzene-d4 50.0 100% SurrOgate Standards · Methane, dibromofluoro- 60.0 ~.20% 1,2-Dichloroethane-d4 58.4 117% Toluene-d8 5:1..9 104% p-Bromofluorobenzene (BFB) 51.9 104.% I Halcyon Laboratories, :[nc. EPA 8260B Laboratory Report so. Sample Results in mg/Kg Certification # 1920 CLIENT: E2C Remediation, LLC 5300 Woodmere Drive, Suite 105 Bakersfield, CA 93313 Project ID · Mr FaSt Report. Date · 8/6/2002 Sample ID · 3343/lVlW18-117 Analyte Result Method RL Units MTBE Methyl Tert-Butyl Ether (MTBE) ND 0.1 mg/Kg BT£X Components Benzene ND 0. l mg/Kg Toluene ND 0.1 - mg/Kg Ethylbenzene ND 0.1 mg/Kg m & p Xylenes ND · 0.1 rog/Kg o Xylenes ND 0.1 mg/Kg Internal Standards Results % Recovery ' Benzene, fluoro 50.0 100% Benzene-d5, chloro- 50.0 100% 1 ,'4-Dichlorobenzene-d4 50.0 100% SurrOgate Standards Methane, dibrc~mofluoro- 61.2 1'22% · 1,2-Dichloroethane-d4 59.4 119% Toluene-d8 52.0 104% p-Bromofluor°benzene (BFB) 51.4 103% Halcyon Laboratories, Inc. EPA 8260B Laboratory Report Soil Sample ResUlts in mg/Kg Certification # 1920 CLIENT: EzC Remediation, LLC 5300 Woodmere Drive, Suite 105 Bakersfield, CA 93313 Project ID · Mr Fast Report Date · 8/6/2002 Sample ID · 3344/MW18-119 Analyte Result Method RL Units MTBE Methyl Tert-Butyl Ether (MTBE) ND 0.1 mg/Kg BIEX Components Benzene ND 0.1 mg/Kg Toluene ND 0.1 mg/Kg Ethylbenzene ND 0.1 mg/Kg m & p Xylenes ND 0.1 rog/Kg o Xyle~es ND 0. I rog/Kg Internal Standards Results °/o Recovery Benzene, fluoro 50.0 100% Benzene-d5, chloro- 50.0 100% 1,4-Dichlorobenzene-d4. 50.0 100% SUrrogate Standards Methane, dibromofluoro- 61.3 123% 1,2~Dichloroethane-d4 59.! 118% Toluene-d8 49.2 98% p-Bromofluorobenzene (BFB) 55.0 110% I 'Halcyon Laboratories Chain of CustodY Form Client Name:.. E2C RemediatiOn, LLC 661.831.6906 fax 661.831.6234_ Analysis Requested Sample Matrix Project Name: fVt ~_ -~::~<. 'r- ~ ~ ~' ~ ~ ~ n----I Aqueous Client Address: 5300Woodmere Dr., Suite 105. Bakersfield, CA93313 ~ ~ ~ ~ ~ < < ~ ~ Project Manager: '~LL L~¢~o~' ~ ~ ~ ~ < ~ ~ ~ ~ ~ · Soil .... 8 ~ ~ ~ D m ~ Acidified Sample Date Sample Time Sample Description and Container Type ~ ~ ~ ~ > ~ ~ ~ ~ ~ ~., Comments Turnaround Time Requested: 24 Hour 48 Hour 5-Day Standard ' I Relinquished BY: ~,,~,J ~ ~[~.--- Date.-/i I1/~z Relinquished By: Date: Received By:-.~/~_~-- Date:?///7/& Received By: Date: .July 31,2003 Mr. & Mrs. Ki Chu Yi Mr. Fast Service Station 600 Brundage Lane Bakersfield, CA 93304 Subject: Installation of Additional Offsite Remediation System Elements, · First Quarter 2003 Groundwater Monitoring Report and Remedial Status Report Mr. FaSt Service Station 600 Brundage Lane BakerSfield, California Dear Mr, & Mrs. Yi: E2C Remediation, LLC (E2C) has completed First Quarter 2003 Groundwater Monitoring at the property identified as the Mr. Fast Service Station at 600 Brundage Lane (Site), Bakersfield, California. Trenching and piping installations and construction of the equipment pad and enclosure for the offsite soil and groundwater remediation system were completed in January and February 2003. In February 2003, the off-site remedial system was brought online. The status of on-site soil and groundwater remediation using soil vapor extraction and air sparging and initial operation of the off-site system are also included in this report. · It is a pleasure to be of service to you, should you have any questions regarding this submitta'l, do not hesitate to call either of the undersigned at 661-831-6906. Respectfullyf~/~-,~-~~ ~ Submitted, _.. .... '*~ ~_ E2C Remediation, LLC . f ~'pr nclpai . ,,~,,. ,:. ;" :! ,7 .? .., % .... .,,.- !:..~ . r,.... ,,o in . .# 779 Senior Geologist ~ <-/,~v' . -'" '¢ / ~ _ ,~/-,_/¢. H ' { (-~E>:'~-~cJl it*V /., ] Rag. Exp. 11/30/04 CC~i~ng, R.G. %.~: k.. ..... .~,,. . M~'o~ard Wines, R.G Associate Engineering Geologist Hazardous Materials Division California Regional Water Quality Control Board City of Bakersfield Fire Depadment Central Valley Region 1715 Chester Avenue 1685 "E" Street Bakersfield, CA 93304 Fresno, CA 93706 INSTALLATION OF ADDITIONAL OFFSITE REMEDIATION SYSTEM ELEMENTS, FIRST QUARTER 2003 GROUNDWATER MONITORING REPORT AND REMEDIATION STATUS REPORT I MR. FAST SERVICE STATION 600 Brundage Lane Bakersfield, California July 31, 2003 i Project Number 1801BK03 ~l Prepared For: i Mr. & Mrs. Ki Chu Yi 600 Brundage Lane Bakersfield, California i Proparod By: ~.~ E2C Remediation, LLC i Environmental/Engineering Consultants 5300 Woodmere Drive, Suite 105 Bakersfield, CA 93313 I e2c.remediation.llc@sbcglobal.net Project Number 180 I BK03 July 3 I. 2003 TABLE OF CONTENTS TABLE OF CONTENTS i 'LIST OF FIGURES .......................... , ..................................................... , .................................... . ii LIST OF TABLES. ' ii LIST OF APPENDICES .............. ' ii EXECUTIVE SUMMARY ................................................. ................................................. 1 Conclusions ................................................... , ........................................................................ 1 Recommendations 2 1.0 INTRODUCTION .................................................................................................. , ........... 3 1 ~1 Site Description .................................................................................................... ! ........ 3 1.2 Regional and Site Geology and Hydrogeology ............................................................... 3 1.2.1 Regional Geology ................................................................................................... 3 1.2.2 Regional Hydrogeology .......................................................................................... 4 1.2.3 Site Specific Subsurface Stratigraphy and Hydrogeology ............. 4 2.0 INSTALLATION OF ADDITIONAL OFFSITE REMEDIATION SYSTEM ELEMENTS ......... 5 2.1 Equipment Pad Construction ' ..5 3.0 FIRST QUARTER 2003 GROUNDWATER MONITORING ...... ..6 3.1 Groundwater Elevations ................................................................................................ 6 3.2 MonitOring Well Purging and Sampling .................................................................. ~ ....... 6 3.3 First Quarter 2003 Groundwater Analytical Data .................................................. 7 4.0 REMEDIATION STATUS REPORT ................................................................................... 7 4.1 Onsite Remediation Status ............................ : ................................................................ 7 4.1.1 Onsite Remediation System Equipment .... ..ii ........................................................... 7 4.1.2 Regulatory Compliance 8 4.1.3 Ongoing Onsite System Operations ........................................................................ 8 4.1.4 Discussion of Onsite Remedial Efficiency ....................................... - ....................... 9 4.2 Offsite Remediation Status .......................................................................................... 10 4.2.'1 Permitting ............................................................................................................ 10 4.2.2 Utility Trenching and Piping ............................................................... 10 4.2.3 Equipment Pad Construction ................................................................................ 10 4.2.4 Offsite VE/GASS Operations 10 4.2.5 EvaluatiOn of Offsite Remedial i 1 · Efficiency 1 4.3 Conclusions Regarding Remedial Operations. at the Site ' 11 4.4 Remedial Operation Recommendations ............................................................ 12 4.4.1 Onsite Remedial SYstem ...................................................................................... 12 4.4.2 Offsite Remedial System ...................................................................................... 12 5.0 CONCLUSIONS' . .................................................................... ; .................................... 12 6.0 RECOMMENDATIONS ....................................................... .... i ....................................... 13 7.0 LIMITATIONS AND REPORT CERTIFICATION .............. 14 ! I EzC Remediation, LLC i PrQ_iec! Number 1801BK05 ~ July $1. 2005 LIST OF FIGURES Figure 1 Site Location Map Figure 2 Site Plan Figure 3 First Quarter 2003 Groundwater Gradient Pict Figure 4 First Quarter 2003 Benzene Isoconcentration Pict Figure 5 First Quarter 2003 TPHg Isoconcentration Pict Figure 6 Equipment Pad Location Pict Figure 7A Offsite Equipment Pad Location Figure 7B Offsite Equipment Pad Configuration ' LIST OF TABLES Table 1 Summary of First Quarter 2003 Groundwater Monitoring Data Table 2 Historical Groundwater Elevation Data Table 3 Historical Groundwater Analytical Results Table 4 Summary of VES Monitoring Data Table 5 Summary of Onsite Hydrocarbon Mass Removed using VE/GASS (based on influent concentrations) Table. 6 Summary of Onsite Hydrocarbon Mass Removed using VE/GASS (based on %LEL) Table 7 Summary of Offsite HydrOcarbon Mass Removed using VE/GASS (based on influent concentrations) LIST OF APPENDICES Appendix A First Quarter 2003 Groundwater Purge Data Sheets Appendix B First Quarter 2003 Groundwater Analytical Laboratory Report ! ! I E2C Remediation, LLC ii Pr(2/ect Number 1801BK03 · ~l~lly 31. 2003 EXECUTIVE SUMMARY This report contains the results of.the First'Quarter.2003 groundwater' monitoring event, the · progress of groUndwater remediation, and offsite RAP implementation for Mr. Fast Service Station located at 600 Brundage Lane, Bakersfield, California (Site). This report is presented to comply with the directive of the CalifOrnia Regional Water Quality Control Board - Central Valley Region (RWQCB) dated September 21~ 2001. This report presents the results of the work. activities and includes analytical data, groundwater elevation data, and interpretations of current groundwater quality and floW direction beneath the Site and the immediate vicinity. Conclusions Based on the data presented in'this report, E2C makes the following conclusions: · Overall groundwater elevations decreased an average of 1.97 feet since the Fourth Quarter 2002, which indicates that groundwater was discharging from the perched water zone. Water level fluctuations in this area appear to be strongly .influenced by recharge from the unlined canal west of the Site. Falling water February suggest levels in that recharge was not occurring at that time or was insignificant relative to discharge from the perched water zone; · Groundwater flow for the First Quarter 2003 was to the south-sOutheast at a steep average gradient of 0.039 ft/ft from the-site proper to the area of well MW-12R and at a very steep gradient of 0.14 ft/ft between MW,12R and MW-15S in Fig Street. · Wells MW-15D, MW-16, and MW-17D were found to be dry, suggesting that groundwater flow along Fig Street is laterally discontinuous. Well MW-lbS was dry in the First Quarter 2002 and has previously contained more than 3 feet of water, which suggests that groundwater flow conditions in the vicinity of this well fluctuate over time; · Free-product was not present in any wells in the First Quarter 2003; · Benzene has been detected sporadically at generally Iow concentrations across the Site, however, Significant benzene (1,200 pg/L) was reported in the groundwater sample from MW-13 in.the First Quarter 2003; · The benzene of the groundwater plume to be confined to the area of portion appears wells MW-13 and MW-14; · Significant concentrations of toluene, ethylbenzene and xylenes (total) continue to be reported in groundwater samples from wells MW-7 (offsite), MW-8 (onsite), MW-1 1 R (offsite), and MW-12 (offsite); · .In general, fuel hydrocarbon concentrations have decreased onsite, which is the result of the onsite remedial operations; · Offsite fuel hydrocarbon concentrations remain high; · The.downgradient edge of the groundwater plume appears to be defined based on the non-detect of fuel hydrocarbons at MW-lbS, MW-17S and MW-18 reported in the First ' Quarter 2003; · The concentration of benzene in the sample from well MW-18 significantly decreased from the Third Quarter 2002 (36 pg/L) to the Fourth Quarter 2002 (7.1 Izg/L) to the First Quarter 2003 (non-detect). Well MW-18 is screened in a deeper water-bearing zone than wells MW15S 'and MW-17S; nearby I I EzC Remediation, LLC I I . Project Number 1801BKO3 July 31. 2003 I · Influent concentrations to the onsite remediation system declined rapidly after start up indicating a "groundwater-only" contaminant plume. Cycling of the system on a three I week off and one Week on basis resulted in a significant increase in system influent concentration and hydrocarbon removal rate from the Third to Fourth-Quarters 2002; however, influent concentrations declined in the first Quarter 2003; I · For a one-year period.(April 2002 to April 2003), the onsite remediation sYstem, removed approximately 2,042 pounds of hydrocarbons from the subsurface; · Based on a ratio of electricity coSts per unit mass of hydrocarbons 'removed, the I operation of the VES machine for the onsite remedial operation is economically unviable; · The off.site VES machine was hooked up and started for offsite remediation. After one week of operation it was apparent that operation of this machine was also economically I unviable due to a disprop°rtionate ratio of fuel costs to mass of hydrocarbons removed; and · Alternative on- and off-site remedial options will be required. I Recommendations Based on the data presented above and the conclusions from this data, E2C makes the I following recommendations: · Continue to conduct groundwater monitoring at the Site on a quarterly basis; I · Analyze groundwater samples for BTEX and five fuel oxygenates using EPA Method 8260b and TPHg using EPA Method 8015M; · Discontinue use of the VES machine in the onsite area; I · Continue Operation of the GASS in the onsite area to oxygenate groundwater and strip hydrocarbons; Convert the offsite vapor extraction portion of the remedial system to a GAC system and I operation groundwater sparging (GAS) to oxygenate continue of the of f site air the groundwater and Strip hydrocarbons. The offsite GAC/GAS system (GAC/GASS) will be used to capture hydrocarbons from the sparged and oxygenated groundwater as it I migrates downgradient from the onsite and area; · Perform weekly operations and maintenance visits for the offsite GAC/GASS on a" I weekly basis. This will include carbon canister replenishment as necessary. Note: Based' on conversations with the SJVAPCD it has been found that a lengthy public notification and hearing process would be required to convert the onsite remedial system to an I system. As such, E2C is recommending that only the onsite GASS continue when alternative the offsite GAC/GASS commences operation. I Based the VE/GASS data for the offsite remediation Amendment on testing an Request was submitted to the SJVAPCD to convert the offsite system to a GAC/GASS. The Amendment Request is in final review at the SJVAPCD and conversion to the GAC/GASS is anticipated for Ilate July 2003 with subsequent startup. Upon GAC/GASS startup groundwater air sparging will recommence in the onsite area. ! ! I E2C Remediation, LLC 2 Prqiect Number 1801BK03 Jul_v 31. 2003 1.0' INTRODUCTION This report contains the results of the First Quarter 2003 groundwater monitoring event and the .remediation status for' the Mr. Fast Service Station at 600 Brundage Lane (Site), Bakersfield, California. This report is presented to comply with the directive of the California Regional Water Quality Control Board - Central Valley Region (RWQCB) dated September 21, 2001. This report presents the results of the work activities described above and includes groundwater analytical and elevation data, and interpretations of current groundwater quality and. flow direction beneath the Site and immediate vicinity. 1.1 Site Description The Site is located at 600 Brundage Lane in Bakersfield, California (see Figure 1 for Site location map). The Site is located in the SW 1/4 of SE 1/4, Sec. 31, T29S, R28E, Diablo Base and Meridian. The present property consists of a reCtangular-shaped lot containing one building located in the Northeast corner (see Figure 2 for Site Plan). The building is currently occupied by a small retail business, Mr. Fast Gas & Liquors. Attached to the west side of the building is a fenced in storage area. Old dispenser iSlands and new dispenser islands are located along the south edge of the building. The property is bordered along its northern side by 1st Street, along its eastern side by T Street (on the South side of Brundage T Street becomes Berneta Avenue), along its southern side by Brundage Lane, and along its western side by the Kern Island Canal - Central Branch. Residential areas, interspersed with light commercial/industrial areas, are located adjacent to the Site. Vista High School is located approximately 1,000 feet North of the Site. Highway 58, an East-West trending four-lane divided freeway is located approximately 450 feet south of the Site. 1.2 Regional and Site Geology and Hydr°geology 1.2.1 Regional Geology The property is located in the south central area of the San Joaquin Valley where the Sierra Nevada, Great Valley, and Coastal Range physiographic provinces meet. The southern end of the Sierra Nevada Province is composed of a massive block of igneous and metamorphic rock of Mesozoic age and older. This Sierran block, 40 to 100 miles wide and 400 miles long, slopes five to seven degrees beneath the San Joaquin Valley. The Coastal Range province on the west consists of tectonically deformed and fractured marine and non-marine sedimentary rocks of Jurassic, Cretaceous, and Tertiary age, which dip eastward beneath the Sand JOaquin Valley. The Great Valley province is a broad asymmetrical synclinal trough, which is known as the Sacramento Valley in the north and the San Joaquin Valley in the south. Beneath the southern San ,Joaquin Valley floor, the sierran plutonic and metamorphic rock block is overlain by consolidated marine rocks of ,Jurassic and Cretaceous age. These rocks are by continental marine and non-madne sedimentary rocks of Tertiary age, which are overlain comprised of continental deposits of consolidated to semi-consolidated, fossiliferous sandstone, siltstone, and shale which thicken toward the south and west. The Tertiary rocks, in turn, are by continental deposits, which consist of Pliocene to Holocene river and overlain unconsolidated lake sediments comprised of gravels, sands, silts, and clays. I E2C Remediation, LLC 3 Project Number 1801BK03 Jul_v 31.2003 Surface features of the floor of the San Joaquin Valley consist of disSected uplands, alluvial fans, overflow areas, and lake bottoms. Dissected uplands lie between the mountains and the .nearly flat Valley floor and are manifest in Iow-lying hills through which perennial and intermittent streams flow. These features consist of reworked older alluvium. The alluvial fans are the sites of active stream deposition of sand and silts derived from the Sierra Nevada and the dissected uplands. The overflow lands and lake bottoms lie in the central part of the Valley where silt and clay accumulate in quiet lake and marsh environments. 1.2.2 Regional Hydrogeology The Central Valley of California by a underlain is broad, thick hydrogeologic unit, which consists of soil and rock of varying porosity and permeability. Physical dimensions are approximately 50 miles wide at the widest point in the Valley, 400 miles long, and as much as 2,000 feet deep. Recharge to regional aquifers consists of infiltration of seasonal precipitation and percolation of surface, waters. The Valley aquifer of greatest storage, highest quality, and greatest storage, highest qualitY, and greatest accessibility for domestic and agricultural use consists of the alluvial and lacustrine continental deposits extending to the depths of 1,5000 to 2,000 feet beneath the San Joaquin Valley floor. Lithologic and hydraulic properties of these sediments are largely the product of the sediment source and the depositional environment. These sediments range in size from clays to boulders and include all mixtures between the extremes. Those of the west side of the Valley are derived largely from the Coastal Ranges, which tend to consist of Shales and fine sandstones with limited permeability. The east sediments are derived mainly from granitic materials of the Sierra Nevada which are generally coarser and much more permeable. Sediments encountered during the boring procedUres at the Mr. Fast and adjoining parcels consiSted of alluvial deposits comprised of fine-to-coarse grained sands containing quartzite and micas. Permeability in these sediments is high. Regionally, the depth to groundwater ranges between 150 and 200 feet below grade, according to the 1995 Water Supply Report published by the Kern County Water Agency in January 1998. Unconfined groundwater, or perched groundwater, beneath the subject property is significantly shallower than the regional depth, presumably because of the site location immediately adjacent to the unlined Kern Island Canal - Central Branch. In general, the regional hydraulic gradient in. the area is towards the northwest. Measurements made within shallow onsite and offsite wells over the course of this project have shown that the gradient in the perched groundwater beneath the Site has been consistently towards the southeast, which is oblique away from the unlined canal. 1.2.3 Site Specific Subsurface Stratigraphy and Hydrogeology In general, the subsurface at the Site is characterized by approximately 5 feet of silty sand at the surface followed by sand to approximately 50 to 55 feet bgs. Silty clays, clayey silts, sandy silts, and finer-grained silty sandS occur from that depth to approximately 80 feet bgs. In previous borings for wells (e.g., MW-10), first groundwater was encountered at approximately 47 feet bgs. At the boring for well MW-11R, first groundwater was encountered between 46.5 and 50 feet bgs. At well MW-12, firSt groundwater was not encountered until 56.5 to 60 feet bgs. ! I E¢C Remediation, LLC 4 · July $~o 2003 prqiect Number 1801BK03 On-site, specifically at wells MW-1 th'rough MW-8, groundwater elevations increased an average of apProximately 2 feet from June to August 2001. In the off-site area of wells MW-7, · MW'9, and MW-10 groundwater elevations alSo increased, an average of approximately 1.7 feet. At wells MW-11R and MW-13, groundwater elevations' increased significantly, approximately 7 feet each at wells MW-11R and MW-.13. MW-11R is located approximately 90 feet south of MW-10 and MW-13 is located approximately 100 feet southeast of MW-11R in the general downgradient direction. This data indicates that a very steep groundwater gradient exists between Mw-10 and MW-11R with the gradient flattening out somewhat in the area of MW-11R to MW-13. A review of the boring logs for the Site revealed that differences in lithology are the cause for this change in gradient. In the area from wells Mw-i and MW-2 to the area of well MW-10, the top of the groundwater table occurs above the silty layer, which is generally encountered at approximately 50 feet bgs. This suggests that principal groundwater movement occurs on top of the silty layer within the coarser-grained materials as flow from the recharge point along the canal until it reaches the area of well MW-10. Upon reaching the area of well MW-10, groundwater then matriculates down into the silty layer, which has a lower hydraulic conductivity than the coarser materials lying above (i.e., takes longer for the groundwater to move through the finer grained flow medium). This transfer from flow in coarser materials to flow in finer-grained materials creates a steeper gradient. As expected, groUndwater elevations downgradient of the change in flow medium materials are much deeper than those upgradient of this change and that area downgradient can experience a wide fluctuation in levels due to even minor recharge or discharge effect. Note: Discharge/recharge conditions in the canal also greatly affect the gradient beneath the Site. In June 2002 groundwater elevations increased 5 to 7 feet across the Site. This coincided with dredging of the canal, which removed fines and allowed for higher recharge into the subsurface. 2.0 INSTALLATION OF ADDITIONAL OFFSITE FIEMEDIA TION SYSTEM ELEMENTS In January and February 2003 the offsite remediation system equipment pad and enclosure was completed. The final work consisted of equipping the pad with diesel fuel tanks (supplemental fuel supply for portable generator) and a propane tank (supplemental fuel supply for the VES machine). 2.1 Equipment Pad Construction A concrete equipment pad was constructed to house the offsite VES machine, the manifold, an air compressor, and supplemental fuel tanks (diesel and propane). Figures 7A and 7B depict the pad lOcation and the pad configuration. The pad was enclosed with a cyclone fence with locking accesS gate. The VE and AS piping runs (reported in Fourth Quarter 2002 Groundwater Monitoring Report) were plumbed to the manifold at the east end of the equipment pad. . E2C Remediation, LLC July 31. 2003 Prqiect Number 1801BK03 · 3.0 FIRST QUARTER 2003 GROUNDWATER MONITORING E2C personnel conducted First Quarter 2003 groundwater monitoring activities from February 24-25, 2003, Which included measuring depths to groundwater, checking wells for free-product, purging wells, and collecting groundwater samples. 3.1 Groundwater Elevations Prior t° purging and sampling, each well was checked for. the presence of free-product using a clear bailer. Free-product was not observed in any well this monitoring event. Depth to groundwater was then measured at each well.below the top of casing (BTOC) at the north side of the casing to the nearest 0.01-foot using'a Solinst water level meter (see Table 1'for summary.of measurements; see Table 2 for summary of historical measurements). Based on the previous data regarding the Site, measurements were taken at the wells in order of least impacted location to most impacted location. All downhole equipment, was washed in an Alconox solution and double rinsed with clean water prior to each use and between each well. Groundwater elevations were then calculated by subtracting the measured depths from the surveyed elevation. Groundwater elevations for this sampling round are summarized in Table 1 and with previously collected elevation data for the Site in Table 2. Based on the depth to groundwater measurements, groundwater flow for the First Quarter 2003 was to the south- southeast at a steep average gradient of 0.039 ft/ft from the site proper to the area of well MW- 12R and at a very steep gradient of 0.14 ft/ft between MW-12R and MW-15S in Fig Street (see Figure 3). Overall groundwater elevations .decreased an average of 1.97 feet since the Fourth Quarter 2002, which indicates that groundwater was discharging from the perched water zone. Water level fluctuations in this area appear to be strongly influenced bY recharge from the unlined canal west of the Site. Falling water levels in February suggest that recharge was not occurring at that time or was insignificant relative to discharge from the perched water zone. 3.2 Monitoring Well Purging and Sampling Groundwater was purged at each monitoring well in order to obtain representative groundwater samples. A minimum of three well casing volumes of groundwater were removed from each well prior to sampling utilizing a battery-powered submersible pump. A casing volume is calculated by multiplying the height of the freestanding water column in the well by the cross- sectional area of the well casing. During purging, groundwater parameters of temperature, pH and conductivity were measured as water was pumped from the wells to verify sufficient purging and stable physical parameter measurements on field instruments (see Appendi.x A for groundwater purge data sheets). The pump was decontaminated in a solution of Alconox and water and rinsed with clean water before each use. After purging, groundwater at each well was sampled using a new disposable baile(. A groundwater sample from each well was decanted into three (3) 40-mi volatile organic analysis (VOA) vials. Care was taken to prevent headspace or bubbles in the vials, which were sealed with Teflon-lined lids. Samples were labeled and plaCed, in an iced cooler maintained at 4 degrees Centigrade, accompanied with a Chain-of-Custody document for transport to the analytical laboratory. 6 E~C Remediation, I_LC . July $1.2003 pF2iect Number 1801BK03 3.3 First Quarter 2003 Groundwater Analytical Data Groundwater samples were analyzed at Halcyon Laboratories, Inc. (Certification #1920) of Bakersfield, California for TPHg using EPA Method 8015M, BTEX using EPA Method 8260b, and fuel oxygenate compounds of Di-iSopropyl Ether (DIPE), Ethyl tertiary-Butyl Ether (ETBE), Methyl tertiary-Butyl Ether (MtBE), tertiary-Amyl Methyl Ether (TAME), and tertiarYButyl Alcohol (TBA) using EPA Method 8260b. Appendix B presents the analytical laboratory report. Laboiatory analytical data for the First Quarter 2003 are summarized in Table 1 and along with historical data in Table 3. Free-product was not found in any of the monitoring wells this quarter therefore, groundwater was sampled at all wells that were not dry. The results of the -groundwater chemical analyses are summarized following: · Significant concentrations of TPHg and/or BTEX were reported in the water samples from wells MW-l, MW-71 MW-8, MW-11R, and MW-12 through MW-14; however, benzene was only reported in water samples from MW-13 and MW-14 at concentrations ranging frOm 7.9 Izg/L (24.8 i~g/L in duplicate sample) at MW-14 to 1,200 ~g/L at MW-13 (see Figure 4 for benzene isoconcentration plot); · Toluene was reported in groundwater samples from five (5) wells (MW-7, MW-11R, MW- 12, MW-13, and MW-14) at concentrations ranging from 6.2 ~zg/L (27.5 ~.g/L in duplicate sample) at MW-14 to 25,000 p.g/L at MW-11 R; · Ethylbenzene was reported in groundwater samples from five wells (MW-7, MW-11R, MW-12, MW-13, and MW-I'4) at concentrations ranging from non-detect (11.8 ~g/L in duplicate sample) at MW-14' to 6,800 ~zg/L (MW-13); · Xylenes (total) were reported in groundwater samples from five wells (MW-7, MW-11R, MW-12, MW-13, and MW-14) at concentrations ranging from 10.7 ~zg/L (38.1 ~g/L in duplicate sample) at MW-14 to 6,800 ~zg/L (MW-13);on-detect at MW-14 (11.8 ~g/L in duplicate sample) to 6,800 ~g/L. (MW-13); · TPHg were reported in groundwater samples from nine (9) wells (MWol, MW-6, .MW-7, MW-8, MW-10, MW-11R, MW-~12, MW-13, and MW-14 at concentrations ranging from 912 i~g/L at MW-6 to 48,500 pg/L at MW-11R (see Figure 5 for TPHg isoconcentration plot for distribution); and · MtBE, DIPE, ETBE, TAME, and TBA were not reported in any of the groundwater samples analyzed for this quarter. 4.0 REMEDIATION STATUS REPORT 4.1 Onsite Remediation Status The on-site remedial system consists of soil vapor extraction and groundwater air sparging equipment. Operation of the on-site system commenced on April 4, 2002. Startup testing was performed on April 10, 2002 under the inspection of Mr. Bruce Muir-SJVUAPCD. The initial remediation progress report for the project was Submitted in conjunction with the Second Quarter 2002 Groundwater Monitoring Report. The following sections provide information on the status of the project through the current quarter. 4.1.1 Onsite Remediation System Equipment The vapor· extraction remediation system consists of a regenerative type vapor extraction blower to extract vapors from a network of six wells. An electrically heated Solleco Model 250 EC;AT thermal/catalytic oxidizer is connected to the system to reduce vapor emissions entering the E¢C Remediation, LLC July 31.2003 project Number 1801BK03 atmosphere. The unit's minimum operating temperature is 600 degrees Fahrenheit (°F) in .catalytic mode. This temperature is set to ensure vapor oxidation at reasonable electrical cost. Furthermore, the unit has a catalytic module to complete the oxidation process. For improved reliability and safety, the valve controls, actuators, and components are controlled by relay logic. The Solleco 250 is equipped with automatic air dilution capability and a noise reduction muffler. The system has been modified with a 200-gallon capacity water 'knockout' pot to temporarily store water entrained in the vapor stream. This remediation equipment is designed to shut down and lock oUt inthe event of a system malfunction. The various safety features include high and Iow oxidizer bed temperatures, high and IOW blower pressure, high intake lower explOsive limit (LEL), high and Iow air pressure, high and Iow exhaust temperature, and water knockout malfunction sensor. The system is equipped with. a Zip-drive paperless recorder and instrumentation to continuously record the heat exchanger temperature, the combustion temperature, the catalytic outlet temperature, the system flow rate in standard cubic feet per minute, and the %LEL. 4.1.2 Regulatory Compliance E2C on behalf and under the supervision of the APCD Inspector collected samples of the influent and effluent vapor emissions on April 10, 2002. The samples were collected in Tedlar bags and transported to a certified laboratory under chain of custody protocol. The samples were submitted to Performance Analytical, Inc. of Simi Valley, California, a state certified laboratory (DHS Certification No. 2380), and analyzed for Total Organic Gases using EPA Method TO-3. The daily VOC emissions rate was 7.12 pounds per day (lbs/day) based on the observed system flow rate and a conversion of effluent sample laboratory data to volumetric concentration and 6.74 lbs/day based on the flow rate FID measurement of the effluent vapor stream. Based on these data, the destruction efficiency was calculated as 96.1%, a value that complies with the minimum 95% destruction efficiency stated in the APCD permit conditions. 4.1.3 Ongoing Onsite System Operations E2C personnel periodically measure influent oxidizer concentrations using an FID. A summary of operational data for the on-site system collected during E2C's periodic visits is provided in Table 4. The initial cOncentration as measured with the FID on April 4, 2002 was 950 parts per milliOn by volume (ppmv). After approximately one month of operation, the influent concentration ·decreased to 200 ppmv as measured with the FID. During this period, the influent · concentration was monitored at different well field cOnfigurations to optimize vapor extraction. In May 2002, the influent concentration continued to drop falling to 30 ppmv. The vapor extraction system was shut down on May 14, 2002 to allow conditions .to stabilize prior to groundwater monitoring and to begin cycling the system off and on to allow for the accumulation of hydrocarbon vapors. During the First Quarter 2003, operation of the system was cycled with approximately three weeks of shut down for each operational week. The system was operated during the weeks of November 11, December 2 (partial week), and December 9, 2002 (partial week) and was shut down the intervening weeks during the First Quarter 2003. Groundwater air sparging also began on April 4, 2002 utilizing wells AS-l, AS-2, and AS-3 to deliver air to the groundwater. Initial airflow at these wells varied from 0.25 to 4 scfm at operating' pressures of 1.5 to 5.5 pounds per square inch (psi). Due to these Iow flow rates, the air compressor Was upgraded on April 15, 2002 with an Ingersol Rand Model SSR EP10 Rotary EeC Remediation, LLC Screw Air. Compressor to increase the flow rate. The valve at well AS-1 was closed on December 16, 2002 to focus efforts at wells AS-2 and AS-3. Flow rates increased varying from 4 to 14 scfm at operating pressures of 16 to 18 psi due to the larger capacity air compressor. Cycling of the system on a weekly basis appeared to have increased (double to triple) during the first feW sUbsequent weeks. In late February, the average influent concentration began to decrease until in March 2003, it was calculated that the'average unit electrical usage per unit mass of hydrocarbon removed made use of the existing VES machine economically unfeasible. On April 3, 2003, the system was shut down pending an evaluation of potentially converting the remedial system to a Granular Activated Carbon (GAC) system. 4.1.4 Discussion of Onsite Remedial Efficiency Moderately high influent concentrations and high flow rates were observed at the onset of the remediation project. Rapid declines in the influent concentrations were observed after approximately 30 days of continuous operation. Significant and rapid declines in influent concentration are indicative of "groundwater-only" contaminant plumes or can be caused by channeling in the vadose zone. Generally, when channeling is occurring an increase in flow rate and decrease in well field vacuum are observed. E2C field personnel carefully observed machine operatiohal parameters and did not record significant flow increases or well field vacuum decreases; therefore, the signifiCant decline in infiuent concentrations is likely a result of a "groundwater-only" contaminant plume. In an effort to increase the hydrocarbon removal rate, E2C began cycling (one week on and one week off) the system to determine whether cycling would increase influent concentrations. The results clearly demonstrated that cycling increased influent concentrations.. Prior to cycling on May 14, 2002, influent concentrations had dropped to 95 ppmv. After a one-week off cycle, influent concentrations were measured at 300 ppmv at restart. As cycling continued, the results became even more dramatic. On June 17, 2002 influent concentrations were measured at 620 v an over 10-fold increase. Hydrocarbon removal rates are a function of influent ppm . ., . __., ._~ *~me Flow rate remained nearly constant, run time was halved concentration, ~ow rate, anu ,u,, ,, . (due to cycling) and influent concentration increased by eleven (11) times; therefore, the net result was a 5.5 times increased removal rate over the same elapsed calendar time.. As these results clearly demo.nstrate, cycling of the remediation system at this site produced · significantly higher hydrocarbon removal rates. Therefore, it was E2C's recommendation to continue cycling the system until cycling no longer produces desirable results. Cycling of the system on a one-week operational and three-week non-operational basis had resulted in increased influent concentrations and hydrocarbon removal rates in January 2003. In February 2003 hydrocarbon rates again decreased with a subsequent removal rate decrease. in April 2003 it became apparent that the remedial system was using electricity at a rate significantly greater than the resultant units of hydrocarbon mass removed (i.e., the existing system was not cost effective for the mass removed). As of April 3, 2003 only approximately 2,042 pounds of hydrocarbons had been removed from the onsite subsurface. In addition, as cycling of the system was required to achieve even Iow influent concentrations, for the twelve months of operational time (April 2002 to April 2003) the system was in extraction m°de. approximately 131 days. As such, the system was shut down pending an evaluation of alte,rnative remedial options~ for example, change-out to a GAC system. I 9 E2C Remediatior~, LLC 4.2 Offsite Re mediation StatUs* The RWQCB granted approval of the January 26, 2001 offsite Interim Remedial Action Plan (tRAP) and as amended on July 20, 2001 by letter dated January 28, 2002.' Fieldwork for implementation of the offsite IRAP began in July 2002 with the drilling and installation of soil vapor extraction (SVE) and air sparge (AS) wells south of Brundage Lane. A total of four (4) SVE wells (VE-6 through VE-9) and five (5) AS wells (AS-4 through AS-8).were installed offsite. These items were previously reported along with the Third Quarter 2002 quarterly monitoring report. Trenching and piping for the offsite remedial system were completed in October 2002. ConstrUction of the AS and VE manifolds and a concrete equipment 'pad and equipment enclosure were completed in January 2003. Remaining items for offsite IRAP implementation included obtaining electrical service, installation of the thermal oxidizer, air compressor and associated devices, and remediation system startup testing. 4.2.1 permitting The San Joaquin Valley Unified Air Pollution Control DistriCt (SJVUAPCD) granted an Authority to Construct Permit No. S-3931-2-'0 dated December 10, 2002, for installation of the offsite remediation system. 4.2.2 Utility Trenching and Piping Trenching and piping installations for the offsite remediation system were completed in October 2002 (reported in Fourth Quarter 2002 Groundwater Monitoring Report). 4.2.3 Equipment Pad Construction tn January 2003, a concrete equipment pad was constructed at the location shown in Figure 7A for installation of the offsite remediation equipment (see Section 2.0 above). 4.2.4 offsite VE/GASS Operations A Stealth Firecat 250 Direct fired Thermal/Catalytic Oxidizer with a Competitor Plus positive displacement Vacuum pump and Lincoln Electric 10 horsepower motor was used to extract hydrocarbon vapors from the soil via the network of six (6) extraction wells (VE-6 through VE-9 MW-11, and MW-12). The equipment is trailer mounted with the following major components: entrainment liquid separator, vacuum pump and motor, electrical control panel, burner and fuel train, oxidizer chamber, catalytic cell (when operated in thermal/catalytic mode). The unit is designed to achieve 99% destruction efficiency in direct fire thermal mode at a minimum temperature of 1,400 degrees and 95% destruction efficiency at a minimum temperature of 600 degrees in thermal/catalytic mode. Note: The system was to be operated in thermal oxidizer mode initially, until VOC concentrations reduced below 3,500 ppmv, then a catalytic oxidizer cell would be inserted into the thermal oxidizers stack to control emissions to the atmosphere. When the modification was to take effect, E2C would notify the SJVAPCD. ' At 250 SCFM the vacuum pump generates 12" of mercury vacuum. Note: Flow significantly decreases as vacuum increases. The pump discharge pressure is sufficient to force the vapors through the rest of the system. Through,,acti°n of the vacuum pump soil vapors are drawn from the wells and enter the VES through a butterfly valve mounted on an entrainment separator. This unit is designed to remove any free liquids contained in the vapor stream. Dilution air (if required) enters the'entrainment separator through a separate butterflY valve. The vapors then 'pass through the vacuum pumpl a discharge silencer, flame arrestor, and heat exchanger 10 E2C Remediation, LLC before entering the oxidation chamber. A gas-fired burner installed within the oxidizing chamber provides the necessary heat for the oxidizer chamber where actUal oxidation occurS. The I operating temperature range of the oxidizer chamber is 1,400 °F 'to 1,800 °F. At this temperature the maximum volatile organic compounds (VOCs) conCentration that can be I treated is 5,500 ppmv approximately 40% LEL. ~f the influent concentration exceeds 40% LEL, dilution air is automatically added. An LEL controller continuously, measures the % LEL of the influent stream and operates the soil.vapor control valve and dilution air valve to maintain influent concentrations between set limits. The following alarm conditions will cause the system I to automatically .shut down: low oxidizer temperature, high oxidizer, temperature, high VOC concentrations, Iow flow preSsure and high separator fluid levels in the entrainment separator. I A ratio regulator controIs the gas flow in proportion to the airflow. The regulat°r operates in response to a control signal sent from a process temperature controller to the control motor. I The control motor modulates the air butterfly valve, which controls the combustion aidlow. The ' air pressure in the burner body sends an impulse to the ratio regulatOr. I The following alarm' conditions will cause the system to automatically shut down: high water in the entrained liquid separator, process blower not producing sufficient aidlow, Iow gas pressure at the inlet to the fuel train, exhaust temperature in the oxidizer stack exceeding 1,800 OF, combustion air blower not.producing sUffiCient aidlow, burner not lit. The unit is also equipped i with a microprocessor based supervisory system with remote access,, which scans all control parameters continuously on a chart recorder. I 4.2.5 Evaluation of Offsite Remedial Efficiency I The offsite remedial system commenced operations on February 28, 2003~ By Marc~h 6, 2003, it was readily apparent that continued operation of the thermal machine would be economically · j unviab~e as the ratio of supplemental Propane fue~ plus electricity (for the machine) to the mass removed was extremely disproportionate with only a maximum of 36.5 pounds of hydrocarbons removed for the one-week period. As such, the machine was shut down and the machine was demobilized. An electrical oxidizer ECAT 300 was mobilized to the Site on April 9, 2003 to I evaluate its potential 'effectiveness. After a short period of operation (less than one day) it was found that the influent concentration was Iow (<85 ppmv) and that, as with the thermal unit, the ratio of electrica~ cost per mass removed would *aiso be extremely disproportionate. The EcAT I ~s shut down and demobilized from the Site. 4.3 Conclusions Regarding Remedial Operations at the Site I Based on the re*medial operations at both the on-site and off-site areas, the following :-~'h, conclusions can be made: I · The contamination in the subsurface at the Site appears to be primarily a groundwater problem; · Influent concentrations for the onsite system have declined to a State such that use of I the ECAT machine is not economically viable due to the high cost of electricity usage per unit of hydrocarbon mass removed; · Use of either a thermal or electriCal machine in the offsi.te area is a~so economically I ' unviable for the same reason that the onsite machine use is economicallY unviable; and · Alternative remedial systems will be required for the on- and off-site remedial operations. I E2C Remediation, LLC July 31.2003 Frgject Number 1801BK03 4.4 Remedial Operation Recommendations 4.4.1 Onsite Remedial System In order to convert the onsite system to a GAG system an SJVAPCD Permit Amendment is required. As such, E2C prepared and submitted an Amendment Request to the SJVAPCD Permit To Operate (PTO) for conversion to a GAC system. Based on conversations with the SJVAPCD a change to the existing PTO will require notification of all students at the school located approximately 1,000 feet north of the Site (machine location). This would entail a lengthY public notification process including public hearings. As such, it would most likely be several months before the GAC system could be started. Based on the above conclusions, E2C makes the following recommendation: · Continue air sparging (GASS) onsite to.oxygenate groundwater and strip hydrocarbons with no vapor extraction. The offsite system (see below in Section 4.4.2)will be used to capture hydrocarbons as they migrate downgradient to the offsite area.. 4.4.2 Offsite Remedial System An Amendment to the PTO Request has been submitted to the sjVAPCD to convert the offsite system to a GAC system. The Amendment Request is in final review at the SJVAPCD. It is anticipated that conversion to the GAC system can commence in late July 2003 with subsequent startup. Note: As discussed' above in Section 4.4.1 the offsite GAC system .will be used to capture hydrocarbons migrating from the onsite area. 5.0 CONCLUSIONS BaSed on the data presented in this report, E2C makes the following conclusions: · Overall groundwater elevations decreased an average of 1.97 feet since the Fourth 'Quarter 2002, which indicates that groundwater was discharging from the perched water zone. Water level fluctuations in this area appear to be strongly influenced by recharge from the unlined canal west of the Site. Falling water levels in February suggest that recharge was not occurring at that time or was insignificant relative to discharge from the perched water zone; · Groundwater flow for the First Quarter 2003 was to the south-southeast at a steep average gradient of 0.039 ft/ft from the site proper to the area of well MW-12R and at .a very steep gradient of 0.14 ft/ft between MW-12R and MW-15S in Fig Street. · Wells MW-15D, MW-16, and MW-lTD were found to be dry, suggesting that · groundwater flow along Fig Street is laterally discontinuous. Well MW-15S was dry in the First Quarter 2002 and has previously contained more than 3 feet of water, which suggests that groundwater flow conditions in the vicinity of this well fluctuate over time; · Free-product was not present in any wells in the First Quarter 2003; · Benzene has been detected sporadically at generally Iow concentrations across the Site, however, significant benzene (1,200 Izg/L) was reported in the groundwater sample from MW-13 in the First Quarter 2003; · The benzene portion of the groundwater' plume appears to be confined to .the area of wells MW-13 and MW-14; I 1'," E2C Remediation, LLC prqiect Number 1801BK03 Jul_v 31. 2003 · Significant concentrations of toluene, ethylbenzene and xylenes (total) continue to be reported in groundwater samples from wells MW-7 (offsite), MW-8 (onsite), MW-11R (offsite), and MW-12 (offsite);' · In general, fuel hydrocarbon concentrations have decreased onsite, which is the result of the onsite remedial operations; · Offsite fuel hydrocarbon concentrations remain high; · · The downgradient edge of the groundwater plume appears to be defined based on the non-detect.of fuel hydrocarbons at MW-15S, MW-17S and MW-18 reported in the First- Quarter 2003; · The concentration of benzene in the sample from well MW-18 significantly decreased from the Third Quarter 2002 (36 pg/L) to the Fourth Quarter 2002 (7.1 jzg/L) to the First Quarter 2003 (non-detect). Well MW-18 is screened in a deeper water-bearing zone than nearby wells MW15S and MW-17S; · Influent concentrations to the onsite remediation system declined rapidly after start up indicating a "groundwater-only" contaminant plume. Cycling. of the system on a three week off and one week on basis resulted in a significant increase in system influent cOncentration and hydrocarbon removal rate from the Third to Fourth Quarters 2002; however, influent concentrations declined in the first Quarter 2003; · For a one-year period (April 2002 to April 2003), the onsite remediation system removed 2,042 pounds of hydrocarbons from the subsurface; approximately · Based on a ratio of electricity costs per unit mass of hydrocarbons removed, the operation of the VES machine for the onsite remedial operation is economically unviable; · The offsite VES machine was hooked up and started for off site remediation. After one week of operation it was apparent that operation of this machine was also economically unviable due to a disproportionate ratio of fuel costs to mass of hydrocarbons removed; and · Alternative on- and off-site remedial options will be required. 6. 0 RECOMMEIVDA TIONS Based on the data presented above and the conclusions from this data, E2C makes the following recommendations: · Continue to conduct groundwater monitoring at the Site on a quarterly basis; · Analyze groundwater samples for BTEX and five fuel oxygenates using EPA Method 8260b and TPHg using EPA Method 8015M; · Discontinue use of the VES machine in the onsite area; · Continue operation of the GASS in the onsite area to oxygenate groundwater and strip hydrocarbons; · COnvert the offsite vapor extraction portion of the remedial system to a GAC system and of the offsite groundwater air sparging (GAS) to oxygenate the continue operation groundwater and strip hydrocarbons. The offsite GAC/GAS system (GAC/GASS) will be used to capture hydrocarbons from the sparged and oxygenated groundwater as it migrates downgradient from the onsite area; and · Perform weekly operations and maintenance visits for the offsite GAC/GASS on a weekly basis. This will include carbon canister replenishment as necessaw. EzC Remediation, LLC Pro_iect Number 1801BK03 July 31. 2003 Note: Based on conversations with the SJVAPCD it has been found that a lengthy public notification and hearing process would be required to convert the onsite remedial system to an alternative system. As such, E2C is recommending that only the onsite GASS continue when 'the offsite GA'C/GASS commences operation. Based on the VE/GASS testing data for the offsite remediation an Amendment Request was submitted to the SJVAPCD to convert the offsite system to a GAC/GASS. The Amendment Request. is in final review at the SJVAPCD and conversion to the GAC/GASS is anticipated for late July 2003 with subsequent startup. Upon GAC/GASS startup groundwater air sparging will recommence in the onsite area. 7.0 ' LIMITATIONS AND REPORT CERTIFICATION E2C has prepared this Report in accordance with generally accepted standards of care existing in California at this time. It should be recognized that definition and evaluation of geologic conditions is a difficult and inexact science. Judgments leading to conclusions and recommendations are generally made with limited knowledge of surface conditions present, No Warranty expressed or implied is made. This report has been prepared under the professional supervision of the registered professional whose seal and signature appear herein. The conclusions Of this report are based solely on the Scope of Services outlined and the sources of information referenced in this report. Any additional information that becomes available concerning the Site should be submitted to E2C so if that our conclusions may be reviewed and modified, necessary. This report was prepared for the sole use of Mr. & Mrs. Ki 'Chu Yi and/or agent(s). Prepared By: ,n .._.... 2eview,Sd By: Will~'~;5 .'%:'~, 7",, ./~..~.~. ~i-.61~'al~in, R.G. #4779 e~t ~ ,/~:;;:: :..-...,,,.~.% / ¢.,':, ~..C".¢arLITlydrogleologist ....... " /~?"'>'" '4;' ',-', fi.I ... ~¢'~. ~x,. 11/30/04 \ ¢ %. ,,. -,,' ":; ~ \ ".b..",.'~' 'z",/,,",~' / .,..: ...... .-.:.: ........ , EzC Remediation, LLC 14 pr~_iect Number 1801BK03 ,Jul_v 31.2003 FIGURES Figure 1 Site Location Map Figure 2 Site Plan Figure 3 First Quarter 200'3 Groundwater Gradient Plot Figure 4 First Quarter 2003 Benzene Isoconcentration Plot Figure 5 First Quarter 2003 TPHg Isoconcentration Plot Figure 6 Equipment Pad Location Plot Figure 7A. Offsite Equipment Pad Location Figure 7BOffsite Equipment Pad Configuration E2C Remediation, LLC Figure~, ~,~:'s~ ~ ~'*..~=[~,. ~1 ,'~, ~':~;%¢. ~ L.'I~Ii: .... El~l I~ E ~ -I olz ~ - /.~lJ n SC~ ~ Terrace ~¢}//~ ~1 E I ~dl, ]lTerrtce ~~,, u;fll~ ~ ~,. ~=~'T""~,~ ~o,,I ~"~ ~ ~ ~ ..~'.x<.~: I ;x~;<~;'.:~ ,,, ~ ¢ / ~' · ~i 9 ' ;,. ~; .... ~k' ~v,: ~/.~.,~.~,~.,, =, ,-, ~ ~d ~, ~ , , .... ~ r ~/ ~deL~d ~ ~ v a,..~ '~'~Tf"lm ~ EI~ a~,,.,,~' . ac~. ' 515 ~J ~l~ ~ ~c'~ --; X I Brook Street ~4 ~"~¢C,. , (~% ¢~j W~ITE 'LANE ~r4??fiV' ' 1 EAST,I, WHITE LAN~ E2CRemediation, LLC MR. FAST SERVICE STATION FIGURE 600 BRUNDAGE LANE 3oo'wood . 1 Bakersfield, California 93313 Telephone: (661) 831-6906 SITE LOCATION MAP Facsimile: (~1) 831-~234 LEGEND Monitoring Well Location Shallow Monitoring Well Location Deep Monitoring Well Location O Abandoned Well Location APN: 011-031-05 ¥ Vapor Extraction Well Location 'T' Street [] Air Sparge Well Location BM Benchmark I Mr. Fast Service Station VE-2 ¥ Cu,re,t Gas I · Pumps I I YE-1 V [] VE-4 ~'-~ MW~4~ o~ o. ~0, APN: 011-032-16 MW-3 IV(W-1 ~ ":~' MW-5 MW-6 I~ Brundage Lane MW-8 E- BM Elevation +396.41 MW-6 92fi West; 22ff South BRUNDAGE LANE MW-9 AS-4 MW- 10 VE-6 E-7 ~ u.J / ~ ~ ~; IAS'6~ "/ AS-7 ~o ¢ MW-12 ~ ..~ MW-11R_~ m Mw-11 ,,lw:14 VE-8 _.'~_. -~ 011-041-01 011-041-02 H 011-048-15 I AS-8 r I I I VE-9, ?:~, 1011-048-101 o~ 1-048-0910--048-08 011-041-12 I" N FIG STREET MW-15S -(~--~p--~ ' 0 I 80 MW-18 I I 40I I FREEWAY RIGHT-OF-WAY SCALE: 1 inch = 80 feet E2C Remediation, LLC MR. FAST SERVICE STATION FIGURE 600 BRUNDAGE LANE I 5300 Woodmere Dr., Suite 105 BAKERSFIELD, CA.. 2 Bakersfield, California 93313 Telephone: (661) 831-6906 'SITE PLAN Facsimile: (661) 831-6234 I I o I 8o ,..,:;~, . ~ ~ ,-?,.!;..,:~-; ~ ~ SCALE: 1 inch = 80 feet I.... ................... ..... .,-L.+ MW-1 / I yE,5 3~,~.¢ MW-5 ! · F 'l ! ,,,-,,.,,,-o:, . :; ' "'~" z I ~ ~ 330.00 LEGEND i i i ' I.~- + Monitoring Welt Location , ~ i -- ¢"~'_O~' ~ 325.00 ~,-,~ ~-.'~ + Shallow Monitoring Well Location ¢ MW-17s MW-17d I + Deep Monitoring Well Location MW-16 {~) Abandoned Well Location ?H.~ ::,: !:!~'~i~.:~ __ ~' Vapor Extraction Well Location MW-15s f~ MW-15d ~ I"~"~"~ BM Benchmark 320.00 . Z.........-s---, ' I ,_d~~ Groundwater Elevation Contour Iz I~ ,."7 i.._--.'¢J A 'r' ~:: (£,- (i -(' u:_ \.;\,' A Y ~'3~'~' (FT MSL) ~ Groundwater Elevation (FT~SL) E2C Rernediation~ LLC ~R. ~AST SERWCE STATION FIGURE 600 Brundage Lane i s3oo Woodmere Dr., Suite 10S Baker$lield, Calilornia Bakersfield, California 93313 Telephone: (661) 831-6906 FIRST QUARTER 2003 Facsimile: (661) 831-6234 GROUNDWATER GRADIENT PLOT I 0 J 80 ' SCALE: 1 inch = 80 feet MW-2 .......................... .:.,.,,:,:: ,,,.., ~ Brundetge Lane VE-4-- ~ ~ ~w-~ MW-4 ~ ............. · 396,11 from MW-6 :,-~q ._.~__.~ ~;;~ MW-9 MW-lO MW-7 MW-~a . ~ . uwm ~ I"~1~ ~ ~ Jl *.0 I Monitoring Well Location ~ Shallow Monitoring Well Location o~.,',~-~ g o,~-o.,8-o~ 'l .o8~ ~ o~,.o4, ................... : .................. ~"~" MW-17d MW-17s Deep Monitoring Well Location MW-16 Vapor Extraction Well Location ..................................... ~'~:~ 5~ ........ ~- ...... ~1 .... I BM Benchmark. ,_~Groundwater Elevation Contour i-V',L:~JV/~Y ~ ...... .-, -,' , .Y ~ Groundwater Elevation (~MSL) E2C MR. FAST SERVICE STATION FIGURE 600 Brundage Lane 5300 Woodmere D~., Suite 105 Bakersfield, California Bakersfield, California 93313 Telephone: (661) 831-6906 FIRST QUARTER 2003 Facsimile: (661) 831-6234 BENZENE!SOCONCENTRATION PLOT ! 0 80 :! ~ SCALE: 1 inch = 80 feet MW-6 ~ MW-5 , T~H~ Isoconcontration ~ [,o~,,~o,, ~ + Contour in ug/L GE LANE ~S-4 I gE-7 I I LEGEND I + Monitoring Well Location i o~ ND .?..,r~. ~ Shallow Monitoring Well Location uo.~84o o~ ,-o~-12 i ~ Deep Monitoring Well Location MW-15d MW-16 MW-17s MW-lTd 'I"(~) Abandoned Well Location rc"~' STrEeT MW~++~ MW-18 + ~+ BM Benchmark FREEWAY RiG~RT-OF-WAY ,~2C ]~e~e~li~tio~, l_,I.C MR. FAST SERVICE STATION FIGURE · 600 Brundage Lane 5300 Woodmere Dr., Suite 105 · Bakersfield, California __ Bakersfield, California 93313 b Telephone: (661) 831-6906 FIRST QUARTER 2003 Facsimile: (661)831-6234 TPHg ISOCONCENTRATION PLOT I ~ ,,/,?j. ~ ~ ~ ! SCALE: 1 inch = 80 feet Onsite ~ ......................................................... ~ Equipment Pad~ ,MW-2 ; ............................ ,i ~ MW-5 MW-9 AS-4 AS-5 MW*10 MW-llR ~ ~ MW-14 MW-13t VE-8 ~ ~ ~ Monitoring Well Location AS-8 ~ Shallow Monitoring Well Location ~ 0' 0810" 0110'8-09 0 -0.' 8-08 i ~ 011-04' ~, ._ '~.~ ....',' ........... Z ............. ~ ~ .................... MW-17s MW-17d ~ Deep Monitoring Well Location MW-16 ~ Abandoned Well Location r C~ -: -;~EE':' ~ Vapor Extraction Well Location ............................ MW-15s MW-lSd BM Benchmark (~ MSL) Groundwater Elevation (~ MSL) E2C Remediation, LLC MR. FAST SERVICE STATION FIGURE 600 Brundage Lane 5300 Woodmere Dr., Suite 105 · Bakersfield, California Bakersfield, California 93313 Telephone: (661) 831-6906 Facsimile: (661)831-6234 EQUIPMENT PAD LOCATION PLOT BRUNDAGE LANE 4k I I EMPTY LOT II ~,- I O11-048-14 Equipmeqt & Tank Fad See Figure2forBlowup I APN 011-048-06 : APN fence ~1~ o~-048-~s 107 BERNETA HOUSE E2C Remediation, LLC MR. FAST SERVICE STATION FIGURE 5300 Woodmere Drive, Suite 105 600 Brundage Lane Bakersfield, California 93313 Bakersfield, California Telephone: (661) 831-6906 7A Fac'simile: (661)831-6234 OFFSlTE EQUIPMENT PAD LOCATION SCALE: 1" = 10 feet 2' · 2' _ 03 -- 03 ~Sfeet~I - · ~ VES MACHINE " o o - 500-gal ~ ~ m ~3'~ 2' Steel Bollards set 2' from edge of pad on 4-foot centers E2CRemediation, LLC MR. FAST SERVICE STATION FIGURE 5300 Woodmere Drive, Suite 105 600 Brundage Lane Bakersfield, California 93313 Bakersfield, California ~ ~ Telephone: (661) 831-6906 Facsimile: (661)831-6234 OFFSlTE EQUIPMENT PAD CONFIGURATION ! project Number 1801BK03 · July 31. 2003 ! TABLES Table 1 Summary of First Quarter 2003 Groundwater Monitoring Data I Table 2 Historical Groundwater Elevation Data Table 3 Historical Groundwater Analytical Results I 'Table 4 Summary of VES Monitoring Data Table5 Summary of Onsite Hydrocarbon Mass Removed, using VE/GASS (based on influent concentrations) I Table 6 Summary of Hydrocarbon Onsite MasS Removed using VE/GASS (based on %LEL) I' Table7 Summary of Offsite Hydrocarbon Mass Removed using VE/GASS (based on influent concentrations) I I E2C Remediati°n, LLC Tables Project Number 1801BK03 ~ July 31, 2003 TABLE 1 SUMMARY OF FIRST QUARTER 2003 GROUNDWATER MONITORING RESULTS Mr. Fast Service Station 600 Brundage Lane, Bakersfield, California 2/24-25/03 DEPTH TO F-P TOC GW B T E X TPHg TBA ' MtBE DIPE ETBE WELL ID' DATE WATER ELEV. ELEV. , ..... · ........................................................................ (feet BTOC) (feet) (feet MSL) (feet MSL) pg/L MW-1 2/24/03 44.10 394.03 349.93 nd<0.5 nd_<0.5_., n_d<0:5 n_d<0.5 ...... 1,5.,600 .. n~1<_2.:5 nd<0.5 nd<0..5_ nde0.5 _ . nd<0..5 MW-2 2/24/03 43.90 395.01 351.11 nd<0.5 nd<0.5 nd<0.5 nd<0.5 nd<50 nd<2.5 nd~o-.5 ' nd<O.5 nd<0.5 nd<_0.5.. MW-3 2/24/03 44_.62 39_4.64 350.02 nd<0.5 nd<0.5 nd<0.5 nd<0.5- nd<50: _nd<2.5 . r~d<0.5._ nd<.0.5 nd<0.5 nd<0.5 MW-4 2/24/03 44.78 394.14' 349~36 .nd<0.5 nd<0.5...nde0.5_ nd<0.5_._ _ .~d~50 _nd<2:..5 r~.d_<.o.5 ~d<O.5 nd<0.5 _~d<0...5 MW-5 2/24/03 45.32 393.43 348.11 nd<0.5 nd<0.5 nd<0.5 nd<0.5 nd<50 nd<2.5 nd<0.5 nd<0.5 nd<0.5 nd<0.5. MW-6 2/24/03 43.16 393.76 350.60 nd<0.5 .nde0.5 nd?0.5 nd<0,5 91_2 _nd<_2.5 nd<0..5 nd<0.5 nd<0.5 nd<0.5 MW-7 2/24/03 45.94'' 393:~3 34~7.69 nd_<.0:5 _ .!.70_ 7,30~.. '~,200 1,1.70' _.nd<2.5 nd<0.5 nd<0.5 nd<0.5, nd<0.5 MW-8 2/24/03 44.96 393.95 348.99 . nd<0t5 nd<0.5 _ . nde0.5 .... nd_<Q.5 .... 1_4,900 n_~d<2~.5 _. od<0.5 0d<_0.5 nd<_ot5 . ~d~0.5._ MW-9 2/24/03 _ 45~54 .... 394.05 348.51 .. .nd<?.5 n.d<0.5 .... n_d_~0.5' .. nd<0.5 ........ ~_d.<_5_0` . nd_<~2._5. .... nd<O~5_ n_d.<__o_~5 _ . nde0:..5.. ~nd<0:5~ MW-10 2/24/03 46.30 392.91 346.61 nd<0.5 nd<0.5' nd<0.5 nd<0.5 1,570 nd<2.5 nd<0.5 nd<0.5 nd<0.5 nde0.5 MW-11 Well taken Out of Service -ReplacedbY MW-11R Well taken out of service .......... - Re_plac~d by MW-11 R, then converted into VE well MW-11R 2/24/03 ............ 391_.33 39!..33 nd<0 _5 i;125,~o0..I. __4,o~0'. _17_._.500' _48__500 .n_d<2~..5 nd<~3.5 . nd<0.5 nd<0.5 _ nd<015 MW-12 2/24/03 46.48 392.06 345.58 nd<0 5 408 ! 5 500 5 800 11 700 nd<2.5 nd<0 5 nd<0.5 nd<0.5 nd<0.5 MW-13 2/2_4/03 ...... 56:_4.0 392:0_0_... 335:60 . 1.,200 .4.,_2.0o .._ 6,800. .1,_3~,_500 ..... _'1_,!40 __n_dS.2_:.5_. nd<._0_-5 ~ nd~0.5 n~d<O-5 nd<0.5 MW-14 2/24/03 69.72 391.65 321.93 7.0 6.2 nd<0.5 10.7 1,060 nd<2.5 nd<0.5 nd<0.5 ' nd<0.5 nd<0.5 dup 24.8 27.5 11.8 38.1 1,620 nd<2.5 nd<0.5 , nd<0.5 nd<0.5 nd<0.5 MW-15D 2/24/03 390.72 NSWD ............ dry MW-15S 2/24/03 7'i:9~ ................ i~3-9-0~'~5'-'~ :318:83 ....... ~-d-< 0~ ~ ...... ~'~' : -~<~)-.~- ....... nd~._5 '- - _~d<.50 MW-16 2/24/03 dry 390.97 NSWD MW-17D 2/24/03 dry 390.91 NSWD . . MW'18 '2/2-4/03 ii'~i0'9' .......... nd<0.5 n-d~0~5' '-~d~)i'5I nd<0.5 nd<50 nd<2.5 nd<0.5I I-~i<b.~ nd<0.5 I nd<0.5 Notes: Duplicate of MW-13 labeled as MW-19 on Chain-of-Custody MtBE = Methyl tertiary-Butyl Ether Results in micrograms per liter (pg/L)= parts per billion (ppb) NA = Not analyzed B = Benzene nd = Below Practical Quantitation Limits: BTEX-0.5#g/L, TPHg-50 #g/L, and MtBE/DIPF./ETBEf'I'AME-0.5 #g/L; TBA-2.5 pg/L ~TOC = Below Top of Casing NSWD = Not Sampled; well dry ~)IPE = Diisopropyl Ether NSFP = Not Sampled, free-product present E = Ethylbenzene T = Toluene ~TBE = Ethyl Tertiary Butyl Ether TAME = Tertiary Amyl Methyl Ether F-P = Free*Product Thickness TBA = Tertiary Butyl Alcohol ~W = Groundwater GW Elevation corrected for Free Product using formula: GW Elev = Reference Elev -[Depth to Water - (Product Thickness)(0.8)] E2C Remediation, LLC T1- I Project Number 1801BK03 July 31, 2003 TABLE 2 SUMMARY OF HISTORICAL GROUNDWATER ELEVATION DATA Mr. Fast Service Station : 600 Brunda~le Lane, Bakersfield, CalifOrnia TOTAL DEPTH TO ELEVATION WELL ID DATE- TOC ELEV. DEPTH GROUNDWATER GW ELEV. CHANGE (feet MSL) (feet BTOC) (feet BTOC) (feet MSL) (feet) 7/20/95 NM? 4/5/96 NM? 3~27/97 .. N_.M_~ .......... 10/20~9_8. .... N M ? 1/11/99 NM? 5/12/99 N/S 45.13 8/20/99_ ..... 40.96 ......... 12/7/99 4O.96 3/30/00-: .... 462~,5 ........ MW-1 7/3/00 Ni~i'.~ ................ 1/3/01 51.73 43.28 350.75 6/4/01 51.80 42.15 . 351.88 1.13 _3_53~. ~_1_ 1.83 12/6/01 51.80 42.32 351.71 -2.00 2/18/02 52.12 45.80 348.23 -3.48 ..... 394,03 5/16/0_.2 ............. _5_2_.-10_ .......... .4_ 12.57- .................. _3_,.5_2._53- .................... ._4. _._3_0 ........ 8/21/02 52.11 40.18 353.85 1.32 1 2/5/02 49.98 43.18 350.85 -3.00 2/24/0.3_ 4_9.:.9_.9 .......... 442_1.._0. ............. 349'93 ................. F~:_9_2 .._ 4/5/96 NM? 3/27/9._7_.- _. N~ .......... :'- 10/20/98 4_4_:._3_6 1/11/99 44.28 5/12/99 42.76 .... ENK ...... 8/29/.9_9_.' 38,61 · · 10/6/99 N/A 1 2/7/99 4i ~4') .......... 3/30(00 .... 45.!9 MW-2 7/3/00 42,01 1/3/01 54,29 43,38 351,63 6/4/01 54,29 41,82 353,19 1,56 8/6/0i- - 54.~-2~ 40~-2- .......... 3-5~,8~ 1170 '-- 12/6/01 54.29 42.42 352.59 -2.30 2/18/02 395,01 ..... 5~4_,._2_ 4_ ..... 45:_4_9- ...................... 34925_2 .............. _-.__3 2 .07_. 5/16/02 54,12 41,02 353,99 4,47 8/21(_0_.2. .... 54.10 40:8_6- ............ 3_54._1 ~ ............ o. !6 ..... 12/5/~_2' ..... -5 ~,z_'!_.0_ .... 43.09 .......... _3_~_1_: .9_ 2 ................ ..._-2.23 ...... 2/24/03 54.02 43290 351.11 -0.81 l I E2C Remediation, LLC T2-! I Project Number 1801BK03 July 31, 2003 ~- TABLE 2 I SUMMARY OF HISTORICAL GROUNDWATER ELEVATION DATA Mr. Fast Service Station I 600 Brundage Lane, Bakersfield, California TOC ELEV. TOTAL DEPTH TO GW ELEV. ELEVATION WELL ID DATE DEPTH GROUNDWATER CHANGE (feet MSL) (feet BTOC) (feet BTOC) (feet MSL) (feet) I I' 4./5(96_- NM~ 3/27/97 NM? 10/20/.9_8- '4514~ ............. I 1/11/99 45.43 5/1.2~9'9 44;2i ............ ENK 8/20/99 39.92. 10/6/99 .... N_/5 12/7/99 42.45 3/30/00 46.44 MW-3 7/3/00 43.05 1/3/01 54.80 44.21 350.43 6/4/01 54.84 42.82 351.82 1.39 I 8/6/.0_'! ~_4_._8. _4_ .........4!.._1~6 ............. _3 _5_3_.48_ ...... 1.66 12/6/01 54.89 43.30 351.34 -2.14 2/18/02 54.82 46.32 348.32 -3.02 .... 394.64 I 5/16/_0._2 5_4_:_87 _ 4_'1.54 .................. ~53.10_ .......... 4.78 8/21/02 54.84 40:_6._6. ..............3~3.__9__8- ................. 0..88 12/5/02 54.82 43.46 351.18 -2.80 I 2)24i~-3'-' i ..... _54'-8_0` .... 44'62 ............... 350.02 ................ 4/5/96 N/A 3/27/97 N/A 10!_2..0/_9__8 ..... 46._17 1/11/99' 45.99 5/12/99 45.13 I 8/2'(~/-9~-- ' ENK ~ 4~]-~,~- 10/6/99 N/A 12/7/~)~-" 42.6~ ..... 3/30/9.0 _ 4_5_.~2 7/3/00 43.10 MW-4 1 ~3(0__1- _5. _4_._2_9_.._ _. 43._8_.0_ ................ 35_0~._3_4_ ................... I 6/4/0_1 ......... ,5_,~ ._1__2 ........ 43:0___8_ ............... _3__5_ 1_.06- ............. 0..72 8/6/01 54.12 4!:2_2. ............. _35_2.92 .............. 1-86 ~.'"~. 1 2/6/01 "- ~.~-. ~'.~-': - 42.80 351.34 -1.58 I 2/18/02 394.14 54.14 45.98 348.16 -3.18 . 5/16/0-2 ' 5~.1-5- ' 42.5z~ ...... : '351.60 '- ' ~.44 8/21/02 ' _...~._10 .. 40._82_-.iI ............ _3_5.3.32 ..... !:72 I 12/5/02 .-I .... 54:0-8- - 43:70- ............... 3--5-0.'-'44 ............ '-2-'88 - . 2/24/03I 5-3'~2 44'78 ........... 3-4-9'36 ......... --!'08- - I E2C Remediation, LLC T2-2 Project Number 1801BK03 July 31, 2003 TABLE 2 SUMMARY OF HISTORICAL GROUNDWATER ELEVATION DATA Mr. Fast Service Station 600.Brundage Lane, Bakersfield, California ELEVATION WELL ID DATE TOC. ELEV. TOTAL DEPTH TO GW ELEV; DEPTH GROUNDWATER CHANGE (feet MSL) (feet BToc) (feet BTOC) (feet MSL) (feet) 3/27/97 N/A 10/20/9'8' 5:1.4,~ ....... 1/11/99. 5.1_:3! 49.75 5/12/99. ENK 8/20/99 42.77 12/7/99 43.99 3/30/._0.0` 51 .~2.0_ 7/3/00 43.89 1/3/01 57.00 44.12 · 349.31 MW-5 6/4)0~- ....... 5~.4~0- ....... 43.98- ........... 34.9?5 ........ 0.14 8/6/~1 .... 5-7-i~0 ..... 42.10 351.33 1.88 12/6/01 57.40 43.16 350.27 ..... :i'.06 2/18/02 393.43 ..... _5_7.~40~ ..... 46:.4_8 ............... 34_6:9_5 ............ -3:32 ., 5/1(~/0~-'-' 57.44 4__2:~2 ........... . _._35_0._5.1_ .............. .3_..5_6 8/21/02 57.38 41_._5..9 .............. _351__._8_4_ .............. .1_:33. . 12/5/0~2 _5_._7_:36 ..... 4_4.0_2 .................. _3_49.4_! ............... 2_2..~.3 2/24/03 .~_7_:30 ........ 45.32 ................... :34_8.1_1_ ............. - 1_:3_0 3/27/_9_7__ N_/A ........... 10~;~.0_~.9_8 ........ 4~.:?'0 1/11/99 45.63 44.10 5/12/-9-9---- ENK 8/2.0_(9_9 ........ 3-9?4 '_ 12/7/99 N/A 3/30/_00 ....... 4.6_'61 ............ 41.58 7/3/00 1/3/01 53.20 43.07 350.69 MW-6 6/4/01 53.06 4!..30 .......... 35.2:4_6- ........... .1_:77 8(6/.0_'1 __ 53.16 39.75 354.01 1.55 12/6/01 ,~3.'i-~-- - '421i'~ .... 35-i 1'62 ............. -2.,~9 2/18/-0~ ..... 53.10 45.18 348.58 -3.04 ........ 393.76 5/1_6/02__ _5_3.~10 41.23_ .................. _35~...5.3- ................. 3:_95 8/21/02 53.10 39.30 354.46 1.93 12/5/02 53.00 42,¢_5_ ............ 3~1.7_'1_ ................. ~2.75 2/24/03 . 5._2..9__2 .......... 4.3:!6 ............. _3.50.6~ .............. _-1:11 ,! '1 E2C Remediation, LLC T2-3 Project Number 1801BK03 July 31, 2003 TABLE 2 SUMMARY OF HISTORICAL GROUNDWATER ELEVATION DATA Mr. Fast Service Station 600 Brundage Lane, Bakersfield, California ELEVATION TOTAL DEPTH TO GW ELEV. WELL ID DATE TOC ELEV. DEPTH GROUNDWATER CHANGE (feet MSL) (feet BTOC) (feet BTOC) (feet MSL) (feet) 3/27/97 .49.5.0 ............. 10/20/98 49.34 1/11/99 53.16 ........ 42~5::I- 5/12/9_.9__ _.ENK 8/2'0/99 45.13 1'2/~)~ .... 45.i-~ 3/30/_0_0_ 5!:_27_ 7/3/00 N/A 1/3/01 52.80 45,08 348,55 MW'7 6/4i0i- 53.72 .... 44.5~ ......... 349.1 i 0.56 -'~ 8/6/01 5~,72 42.~8 - 3501~5 ' 1.74 -' 12__~/0-i' .... _ 5~_.7_2 .......... 4..4-:~2_ ............. 349_..3_ 1~ ............. -_~..54 .... 2/19~0-2' ~- .53. ._70 4~.._2..3_ _3_46:4__0. -_2..9! .._ 393.63 5/16/~) ~.' 53.68 43:_3_1_ ....... _3_5_ 0.3_2- ......... _3:92 . 8/21/02 53.71 42..2__0__ ........... 3__5_1:_4_3 ............... 1_:_1_ ~1_ ...... 12/5/02 .... _5_3_..'~0 ..... 44.48 349.15 _.-__2_ :28 2/24/0-~ 53:_6~ _ . 45.94_ ............... 3_4.~.:69 ......... -!'46_. 7/3/00 ENK 43.42 1/3/0! .... 5_2..80 ....... 43.9_0_ ................. 3.50._0_5. 6/4/01 50.:_9? ...... 43.36 350.59 0.54 8/6/01 50,90 41.58 352.37 1.78 12/6i01-.~ MW-8 2/1'-8-(-02 -- 393.95 '50;~'2-- - 46;~; ......... 34-7~:73 ............ -§:~)-~ ..... 5/16/02 50.90 42.62 351.33 3.60 8/21/02 .... 5.0_._8.9. .... 41...0_6 ...... 3.5_._2.87 ................ _1.5(~ 12/5/02 50.87 43.95 350.00 -2.89 2/24/03 50.85 44.96 348._6_~' ...... -1.33_' _ 7/3/00 ENK 44.02 1/3/01 51.60 45.14 348.91 6/4/0'~' "- 501'80 43.52 ...... 35-0153 ...... i.62 8/6/01 5'0:82- ......... 42.2'i ...... . _ 35-i--.-84 ..... 1..31 12/6/01 50.72 44.2_4 ..... 34._9._81 . . -2.03 MW-9 2/18/02 394.05 50 :.6_8 46..9__4 . _347. '~_1_ ........ ~2.70 5/16/02 50.66 41.92 _352._1_~' ~ ...... 5.02 8/21/02' ' 50.~ "' 4'1-;6~ .... 352.44 0~3i 12/5/02 50.'63' - 44.50 349~55 ' ~2.89 2/24103 -' 50:_4_8 45.54 ...... , 348:5! .... 'i- 1-:_04_ ! I . E2C Remediation, LLC T2-4 Project Number 1801BK03 July 31, 2003 TABLE 2 SUMMARY OF HISTORICAL GROUNDWATER ELEVATION DATA Mr. Fast Service Station 600 Brunda~le Lane, Bakersfield, California TOC ELEV. TOTAL DEPTH TO GW ELEV. ELEVATION WELL ID DATE DEPTH GROUNDWATER CHANGE (feet MSL) (feet BTOC) (feet BTOC) (feet MSL) (feet) 7/3/00 ENK 45.51 1/3/01 52.50 45.28 347.63 6/4/01 52.34 ....... 45.:~4 ......... 347.57' -0.06 '-- 8/6/01, 52.34 :- 43~:~ ...... 349.55- '~.98 12/6/0~'~ 52.34 ..... 44. :i ~' '- 348.77 -0.78 MW-10 2/18/02 .... 392.91 52.32 ...... 4:7.i-2 345.79 -2.98 5/16/0-2- - ' 5~.20 ....... 44~i~4 .... 347.97 ...... 2.'i'8 8/2i/02'- '52.00 ...... 42;5-3- ' 350;38 .......... ~.4:1 12/5/02 ' 52.00 44.88 348.03 -2.35 2/24/0_._3._. 51.88 46.30 346.61 -1.42 7/3/00 ENK 45.75 MW-11 1/3/01 391.35 48.30 44.92 346.43 WELL SILTED UP,.CONVERTED INTO VAPOR EXTRACTION WELL 6/4/01 63.52 54.76 336.46 8/6/.0-!' 391.22 63.5~ 4'~:_6_-5_ _ 343.57. ............. .7:1'~ ...... 12/7/01 63.52 45.08 346.14' 2.57 2/18/02 63.40 54.63 336.59 -9.55 MW-11R 5/22/0.2- .... 63.40 48.68 342.54 5.95 8/21'/02- -- 391.33 6~.3g ...... 4~.6~ ...... 3~4~-20 ............. -~.~ 12/5/02 66.34 46.82 344.40 -3.80 2/24/03 66.'32 52.84 338.38 -6.02 6/4/01 NMFP NMFP NMFP 8/6~0'~" - 392.01 NMFF; .... NM~i5 ........... I~MFi5 12/7)0-1 .......... 44.~ ................. 347.23 2/19/02 51.65 340.41 -6.87 MW-12 5/22/02 43.71 348.35 7.94 8/21/0~ .... 64.§9 ...... 42'.74 .......... 349:52- ........ ~;~7 ..... 12~5/02 ..................................... 392.06 64.88 45.02 347.04 I 2/24/03 64.87 46.48 345.58 -1.46 6/4/01 65.40 58.10 334.55 8/6i01'~ · 392.65 65.40 ..... 50.'97- .......... 341'.68.~.-_i 7.13 12/7/-0i ..... 65.38 ' 49.5~- ..... 343.13 1.45 2/19/02 65.38 57.43 33,4_;57 ......... -7.9~1 MW-13 5/22~0~, "- 66.'i'0 58~'~ - 333.30 -1.27 8/2!/02- 392.00 65.38 47:6__5 ......... 34.4:3_5 ........ 11.05 12/5/02 65.36 . . 48.70 ...... 343.30 -1.05 2/24/03 65.40 56.40 335.60 -7.70 I E2C Remediation, LLC T2-5 -i u]~., ,,~umbo, 1801BK03 July 31, 2003 TABLE 2 SUMMARY OF HISTORICAL GROUNDWATER ELEVATION DATA Mr. Fast Service Station 600 Brundage Lane, Bakersfield, California ELEVATION TOTAL DEPTH TO GW ELEV. WELL ID DATE TOC ELEV. DEPTH GROUNDWATER CHANGE (feet MSL) 'feet BTOC) (feet BTOC) (feet MSL) (feet) 6/4/01 77.00 · 69.88 321.99 ..... ' i-.4'~ 8/6/01 391.87 76.90 68.41 323.46 12/7)01' 7-6.92- ....... 68~0 ............. 3-~3:~ ............. ~--0-.09 2/18/02 76.98 69.30 322.35 -0.80 ..... MW-14 5/22/02' - ' 77,~'1~ ....... 69:50 ............ 322.'i 5 ........... ......... :~8.~6 ....... 6'8';~-(~ ............. 322.95 0.80 8/21/0_2 _ 391.65 .................................................................... 0.37 1225/02 78.96 68.33 323.32 2/24/03' 78~.4_ _- i' 69.-7~ .............. ........ 32:i .93 ........... '1~39.. . 12/7/01 87.24 ". Z dry 2/18/02'- ..... _L ........- ............... - 5/2~,~(~--- . .8_.7_ ._1__8_ ................ d_rY_ ................ '_'_: T_'_'.'_ -8/21~0~ --- 390.72 8~..?_8 _dry MW-lSD 112/5/5~' ' 8;_7.!..8 ........ _d .rY_ ..................... '__'.' ;:_'_': 2/24/d3 - 87'_2.4 ......... d-r)' ......... : ............................ 112/7/01 73.24 .70:7_2 .......... 3~0.03 ' ....... 7-~:3~ dry ........ 21/18~02 5/22/0~'-- 7~.22.- 7_0:¢0 ~320::/'5 ...... MW-15S 8/21/02 390.75 73.25 69.26 321.49 0.74 12/5/02 73.15 69.71 321.04 -0.45 ' ..... 7'§.-35 -1- " 71.92 318.83 -2.21 'i 2/7/01 79:_17 ....... -d~ ................. - ....... _ ............. ~ -- i ....... 79.12 d_ry ...... -~-_7_-.---. ......................... ;718_/_0 _2_ 7 .... ........ 5/22/02 7~5-5- ........... ..................................... dry MW-16 8/21/02 390.97 79.10 _d ._r)/ ...... "--7"- , .... 79.0-(~ - dry ........ '12/5/02 I . 2/24/03 ~.i02 ......... d_.w._ ....................... I -' ~ 2/7/01 .9!:26` ...... _dry ......... : ...... 77T:_'.,-- _ ............. · .... 2/i'8/6~- - 9! :2_? .d_~.._: ;-:7::7'_ ............................. ~)222~2 91.00' dry_ .......... '_'.--7F_'.- MW-17D ~/2i/5~ 390.91 '9:i'-0-~i-'i dry ........ --F---'__' .............. 12/5/02- 9~! ..22 d__ry .... ' '7 - '_'_-._- 2/24/03 91.24_ _. ~_ry T2-6 E2C Remediatioh, LLC I Project Number 1801BK03 July 31, 2003 TABLE 2 SUMMARY OF HISTORICAL GROUNDWATER ELEVATION DATA Mr. Fast Service Station 600 Brunda~le Lane, Bakersfield, California TOTAL DEPTH TO · GTM ELEV. ELEVATION WELL ID DATE TOC ELEV. DEPTH GROUNDWATER CHANGE (feet MSL). (feet BTOC) (feet BTOC) (feet MSL) (feet)· 12/7/01 ' 81.02 57.14 333.60 2/18/02 79.78 61.50 329.24 -4:36 5~22/02 7~.65 ........ 73~9-~ .............. 316.~ ......... _:12.48 MW-17S 8/2i/~2 ............... .- 390:74 79':~5 .... 57.93._i._".ii-'_ ~'i_ "i"~ . '.ii 3~.2-~_8.').' ..... · 16:05 I 1~5_/_0_2_.. 79.65 57.82 332.92 0.11 ~2_4_/03 . 7~9_: 6~ 60:.5.~ ........................ 3_3~.24 ....... -2.68 8/21/02 118.80 114.56 .... 114.40 0.16 MW-18 12/5/02 118.75 Notes: avg. elev. change -1.97 Elev. = Elevation ENK = Elevation not known prior to January 2001 GW = Groundwater NMFP = Not measured, greater than 30" of free-product N/S = Not surveyed (?) Top of Casing Elevations are measured at the north side of casing and referenced to mean sea level Groundwater Elevations- are not corrected for product thickness before 01/03/01 Groundwater elevations after 01/03/01 are based on Benchmark on canal abutment ~ E2C Remediation, LLC : T2-7 Project Number 18018K03 '~'' July 31, 2003 : TABLE 3 SUMMARY OF HISTORICAL GROUNDWATER ANALYTICAL DATA MR, FAST SERVICE STATION 600 Brundage Lane Bakersfield, 'California I' B T / S / X TPHg I TPHd I' TBA ! MtBE DIPE ETBE TAME WELL ID DATE [ .................. ; ............................................................................................... . ............... ~'~'l~i ..................................................... i ................ : ................................................... 7/20/95 4,200 113,000 ND 40,000 329,000 NA NA NA NA NA NA 4/5/96 NA NA N,~ 'NA .... NA -NA 3/2.7/97 1:7~) '2'7,'000 5,0~0 '-30,000 - 2-1~i000 NA 10/20/98 ' N~FP NsFP NsFP 'N~P NS~P N~ ........ NA N'A .........NA NA ..... N'~,' ' ' 1/11/99 ' I~E~' NSFp NS~-P NS'i~P- NSFP NA -NA NA NA NA NA 5/12/99 ' 'N~FP' ' NSFP NSFP .... I;',iS-I~P--' NSFp ....... ~1~ ........ -N~- .... N',~ ...... N,~ ~,~ ~ N-,,~-'- 8/20/99 NSFP NSFP ' "; N-sFP ..... I~'~F~ .... NsFP ..... N-~ ............ NA NA ..... N',~ ' - NA -I~ ..... 12/7/99 <5600 35,400 62,,~00'' '454;000 N)A 3/30/00 NSFP NSFP NSFP " NSF~P NSFP uA 'NA -'-N'/~ ' UA NA N~, 7/3/00 8.2 8.8 1,600 24,000 130,000 UA NA NA NA NA 'NA MW-1 -:1/3/01 nd<20 ' 460 680 ' 19,7~0 ' 1~89~) NA" nd<200 ~d~-20 ' nd<20 nd<20 'nd<20- ' 1/3/0:1 (Dup) nd<20 710 1,400 18.3 17,930 NA nd<200 nd<20 nd<20 nd<20 nd<20 3/2/01 NSFP NSFP NS~P NSFP NsFp NSF~" N~' NS~'P -- N~FP NSFP NSFP 6/4/0~' nd<50.0 '340 ' 1,610 8,050 '65,740 NA' -nd<250.0 nd'~5°.{~- n'd<50.0 nd<50.0 nd<50;0* 8/6/01 - nd<50.0 585 830 - ._ 7,760 33',5~)0' · _ -N-A~ .... nd<250.0 r~l~-60~o ~d<50.0' nd<50.0 nde50.0 i2/6/01 ' ' nd~0.5 nd~0.5 '230 ' '5,280 '-' 73,89'0 NA- · nd*~215 ~l~.~ nc~0.5 nd<0.5 nd'<0.5 2~ 8)02 NSFP NSFP NSFP NSFP NSFP NSFP NSFP NSFP NSFP NSFP NSFP ' 5/i6/~02 '' nde0.5' 3.5 '-'0'16 ..... i-83' ' 28,'600 NA ....... §~0 nd~)~5 -n-~01'5- nd<0.5 'n~<0.~' 8/21)02 - nd<0.5 700 55 ' ' ~85- ' ',~i000 NA r~d~2~5" nd~0~ ~d<0.5 n-d<O~5 nde0'.-5 12/5/02 nd<0~5 :19 1,180 'i',1,~)- ' 1'0,'6'30 2/24/03 nd<015 nd<0.5 nd<0.5 nd<0.5' 15,600 NA ' nd<2'.5 nd<0.5 ' nd<0.5 nd<0.5 nd<0.5 E2C Remediation, LLC T3-1 Project Number 1801BK03 ','~" July 31, 2003 TABLE 3 SUMMARY OF HISTORICAL GROUNDWATER ANALYTICAL DATA MR. FAST SERVICE STATION 600 Brundage Lane Bakersfield, California B T E I X TPHg I TPHd I TBA / MtBE DIRE ETBE I TAMEI WELL ID DATE[ ............................................ : .................................................................................... ~'~)'1" 4/5/96 <0.3 <.3 <0.3 <.03 <50.0 NA NA NA NA ' NA NA 3/27797 ' 1.0 6~2 '" 0.83 ~,.~- 44 ....... ' i'°)2~))i~ <0.5 '<0.~5 .... ~0'.5 .... ~(~.-5- ...... <s-0 .......... 5/12/99 <0.3 5.5 <0.3 1.52 <500 NA NA <2.0 NA NA NA 12/7/99 <0.3 <0.3 <0.3 <0.6 <500 NA NA <2.0 NA NA NA 3/30/00 <0.3 <0.3 <0.3 <0.6 <500 NA NA <0.5 NA NA NA ' ' 7)3/00 <0.5 <0.5 <0.5 <0.5 <50 NA NA <0.5 -~A NA NA ':1/-3~0'~'' nd<0.5o nd<0.50 nd<0~-0'' nd<o.5o- ....... nci~5~ N~' ' nd<5-'-~(:J~0~50 nd<0.50 nd<0.50 nd<0.50 MW-2 3/2/0~' nd<0:~0 "nd<0150 nd<0.50 ' ~d~'0:50 'nde50 ...... NA .......... n~' - nd<0~'50 nd<0.50 nd<0:50 nd-<0.50 6/4/01 nd<0.5 nd<0.5 nd<0.5 nd<0.5 nd<50 NA nd<2.5 nd<0.5 nd<0.5 nd<0.5 nd<0.5 8/6/01 nd<0.5 nd<0.5 nd<0.5 nd<0.5 nd<50 NA nd<2.5 nd<0.5 nd<0.5 nd<0.5 nd<0.5 12/6~01 nd<0.5 ' '~)-.,~6 nd<-0~-5 ' - nd<0-~5" -90 - -N~, nd<215 - . nde0.5 'nd<0.5 'nd~0.5 nd<O.5 5/'~-6)-02 ..... ~.6 58 1.0 37.9 470 NA nd<2.5 nd<0.5 'r~<0.5 nd<0.5 8/2'1/02 1.~' 5.2 -117 ....... 5.0 ' ~-9'0 ......... N~ ....... in-cad-2 .-5- 12/5/02 nd<0.5 nd<0.5 1.3 1.2 ~20 NA nd~.5 nd'<0.5 nd<0.5 nd<0.5 nd<0.5 2/25/03 nd<0~5 nd<0.5 nd<0.5' nd~i5 ' nd<50' ' N/~ -nd<2~5 - -nd<0~ --nde0.5- · nd<0..5 -nde0.'5' E2C Remediation, LLC T3-2 Project Number 1801BK03 '~' July 31, 2003 TABLE 3 SUMMARY OF HISTORICAL GROUNDWATER ANALYTICAL DATA MR. FAST SERVICE STATION 600 Brundage Lane Bakersfield, California ' B T E X TPHo I TPHd I TBA I MtBE DIPE I ETBE I TAME WELL ID DATE ~ ' '(pg/L) 4/5/96 41 42 35 3 000.00 8 600 NA NA NA NA NA NA 3/27)9:7 37 '8.,~ ~70 ' ;1~,1"0-0- ' i2,080. N~, 10/20/98 4.6 '- ..' _' i'/i'1')9-~ 40 ' - i(~'[00 - ~)~0 1_8.~_ _ .8,~09 .... N~ ....... NA._. 65.0 UA NA NA ~/i ~9 '8~'6 ' "<~.3- ' "<0.~' 421 14,300 NA UA 69.4 NA UA UA 8/~0/~ <b.3 <~3 "' ~0~-3 ' -~0'~ .... ~00 ....... ~ ........... ~ .... ~2-~0 ....... -NA ' NA ..... '~A~ .... ~'0/~)~9 .... <0.3 <0.3 ..... ~0:.3 ...... ~:_6 ......... <~0 NA ....... NA 1.1 NA . NA NA '~)99 <0.3 <0.3 <0.3 1.38 <500 NA UA <1.0 NA NA NA ~)3/00 '' <50.0 <0.5 <0.5 <0.5 <50 NA NA <0.5 NA UA. NA 1/3/~ n~.~0~0 '__nd<~:~0_' ~0..50_. _~_0.50 ~_'_.~d~50~ UA nd<5 nd<0.50 nd<0.50 ~d<0.50 nd<0.50 MW-3 3/~0-~" nd<0.50 nd<0.50 nd<0.50 10 2,704 NA nd<5 nd<0.50 nd<0.50 nd<0.50 nd<0.50 6/4i01 nd<0.5 " nd<0~5 nd-<0.5 .... nd~'~-.5 383 ' U~ nd~'2'[5 ..... nde0.'5 .... nd<0.5 nd<0.5 nd<0.5 dup nd<0.5 nd<0.5 nd<0.5 nd<0.5 388 NA nd<2.5 nd<0.5 nd<0.5 nd<0:.5_. _ nd~O..5_. 8/~/0i' nd~o.5 nd<0.5 ' nd~.5 ' '-'d~o.5 ' '"d~5b '~ - '- ~.5 '- -n~- ...... ~d~6.5 nd<0.5 nd<0.5 12/6/01 nd<0.5 1.06 nd~0.'5 - -~d~0.5 '~i5' --NA .... ~2.5 ' ~-0.5 ~d<0.5 nd<0.5 nd~5' dup nd<0.5 0.92 nd<0.5 'nd<0.5 380 NA nd<2.5 nd<0.5 nd<0.5 nd<0.5 nd<0.5 ~8/02 'i9 - 55 .... Nb ~ .... 1,i40 -' -~ ....... nd~'~ .... n'd~0.5 .... nd<0.5 nd<0.5 '~d~'0.-5 5/16/~' ' n~<0.5 -- nd<0.-5 nd<0.5 nd<0.5 nd<50 NA nd<2.5 nd<0.5 nd<0.5 nd<0.5 nd<O:5 8/21)02 ' ' 2~5 9.5' 2.~ 7~9 .........90 ...... U~ ....... ~-d~2.5" 'nd~'b~'~-' nd~0.5 nd~0'[5 nd<0.5 12J~/02 'nd<0.5 - nd<0~5 2.1 2~" ~0 - NA nd<2.5 - .n~-o~ nde0.5 nd<O.5 nd<0.5 ~24/03 nd<0.5 nd<0.5 nd<0.5 nd<0.5 nd<50 'NA nd<2.5 nd<0.5 nd<0.5 nd<0.5 nd<0.5 E2C Remediation, LLC T3-3 Project NUmber 1801BK03 July 31, 2003 TABLE 3 SUMMARY OF HISTORICAL GROUNDWATER ANALYTICAL DATA MR. FAST SERVICE STATION 600 Brundage Lane Bakersfield, California I B I T I E ! X I' TPHg I TPHd I TBA I MtBE I DIPE I ETBE I TAME WELL ID DATE [ .......................................................................................................... '- ...................................................................... (pg/L) : ............................... ~ .............................................................. 4/5/96 <0.3 <0.3 0.75 260 1,800 NA NA NA NA NA NA 3/27/97 2.00 20.0 1.10 9.8 340 NA NA NA NA' NA NA 10/20/98 15 2.50 83 930. 3~0'00 NA N~, .... "'300 .... NA - NA ....... [qA' ' 1/11/99 <0.5 <0.5 <0.5 <0.5 <50 NA. NA 7.2 NA NA NA 5/12/99 58.7 9:8'~ .. 3-8_8.1 ...... i,~04_0 ...... 13~6,00 NA ..... NA ..... 5~4._'0 i.. NA . NA NA · 8/20)9-9 ' ' <0.3- <0,3 <0.3 <0.6 <500 UA UA 3.47 NA UA -UA ' · 10/6/99 .... <013 -<0.3 <0.3 <0.6 <500 NA NA <2.0 NA NA NA 12/7/99 3/30/00 <0.3 <0.3 <0.3 <0.6 <500 NA NA <0.5 NA NA NA '7/3/60 ' "<0.5 ;0.5 <0.5 ' <0'.5 <~0 "NA NA ....<0.5 NA NA 'NA MW-4 1/3/0i ' nd<0~50' ' nd<0.50 nd<0.50- ' n~l-~0.50 - 'nd~50- - 'NA - nde5 "nd~'6~50 ' ~1d-<0.50 nd<0.50 nd<0~b 3/2~61 ....... nd<6.50' ~d~0.50 nd-<~'~50' : ~d~-0.5-6- .... ~d<5-0 ..... NA ..... -n~'~'~ .... ~J;o~50" ~'d<0150 nde0.50 nd<O~5'6- 6/4/01 nd<0.5 nd<0.5 nd<0.5 nd<0.5 nd<50 NA nd<2.5 nd<0.5 nd<0.5 nd<0.5 nd<0.5 8/6/01 nd<0.5 nd<0.5 nd<0.5 nd<0.5 nd<50 NA nd<2.5 nd<0.5 nd<0.5 nd<0.5 nde6?) 5/16/02 ..... i.2 ' 46 '2.~ ' ' 50 '640 .... NA '--nd<2.'5' 'n-d-<~).~ nd<0.5 nd<0~5 nde0.5 8/2i/02 1 4.3 1.1 ' '4.4~' '250 .... NA ' ~id<2.5 '' ~d<°.'5-'- nd<0.5 "nd<o~5 -nd'<0.~''' 12/5/02 nd<0.5 nd<0.5 nd<0.5 0.6 110 NA nd<2.5 nd<0.5 nd<0.5 nd<0.5 nd<0.5 2/25/03 nd<0.5 nd<0.5 nd<0.5 nd<0.5 nd<50 ' NA nde2.5 '" nd;0.5' nde0.5 nd<0.5'- nd<0.5 E2C Remediation, LLC T3-4 Project Number 180iBK03 ,'" , July 31, 2003 TABLE 3 SUMMARY OF HISTORICAL GROUNDWATER ANALYTICAL DATA MR. FAST SERVICE STATION 600 Brundage Lane Bakersfield, California l ........... ~ .......... : ............ % ........... J ............ .E.. .......... J ........... ..x. ................... .T.,P..U..~....LJ.._T...P...u..%J ........ ..T.,~.A.. ....... J ...... ~.t.~.~ .............. .... WELL ID DATE I (pg/L) . . 3/27/97 8.8 32 3;6 29 320 NA NA NA NA NA NA 10/20/98 <0.5 <0.5 <0.5 <0.5 <50 NA NA <0.5 N~, NA NA 1/11/99 <0.5 3.9 ...... <0.:.5 . ~ 1'50 , . . .<5_.0_ ...... NA ......... N__A_ ....... <_0_..5_ ....... _N.A .... NA NA 5/12/99 <0.3 <0.3 <0.3 1.27 <500 NA NA 21.40 NA NA NA 8/20/99 <0.3 <0.3 <0.3 <0.6 <500 NA NA 1.65 NA NA NA 12/7/99 -<0.3 <0~" <0~3 ..... ~0-16' .... <500 ..... -N~, ' "NA" ~i-.0- ........ NA N-A- ..... ' "i~A- ~ 3/30/0-0 '<0.3- <0.-:~ <0~3- .... -<0~3 .... <560 ..... NA '" NA ...... '.~0:'5' .......... NA'. ..... :N~ -' ...... I~X' ' 7/3/00 <0.5 <0.5'" <0.5. <0~5 ..... <50 ...... ~.~ .... NA .... <8.5 ...... NA' NA .... N.~' 'i/3/01- ~d<0.50 ..... nd'<0.50 -n~i';0:~0 2.,~8 ns.~',~o ........ -NA- ...... nd<5 ..... &d.~O.5'O .... nd<0;~0 'nd<0.50 nd<0.50 MW.5 '3/~0i' - nd<0.50-- nd;0.50' nd<0;50' ' nd~(~.50 'nd<5'0 ' 'NA nd<5 ...... ~d-~0;5-0-' .... ~d<~);50 '~d~'o.5o nde0'.50 6/4/01 nd<0.5 nd<015 nd<0~5 nd<015 nd<50 NA-" ~d~2.5' .... nd<0.5' nd<0.5 nd<0.5 n~i'<015 8/6/01 nd<0.5 nd<0.5 nd<0.5 nd<0.5 nd<50 NA nd<2.5 nd<0.5 nd<0.5 nd<0.5 nd<0.5 i2/6~O1 1~.41 480 105 -375 .... 21510 '- NA - -- nd-~-2-.5- nde0.5 - nd-<O.5 nde°.5' nd<0.5 2/18~o2 360 1,060 nd<0:5 '720 ' '190 .......... i~IA '- n~<2.5 ...... ~-d<0':5 nd<0.5 nd<0.5" 'nd<0.5 ' 5~22~02 nd<0.5 nd<0.5 nd<0.5 20 ' 22'0. 'NA nd<2.5 .... ~d<0.5 nd<0.5 .nd<0.5 nd<0.5 8/21/02 1.7 6.9 2.4 6.5 90 'NA 'nd<2.5- nd<0.5 nd<0.5 nd<0.5 nd<~).5 12/5/02 nd<0.5 nd<0.5 1.5 nd <0.5 100 NA nd<2.5 nd<0.5 nd<0.5 nd<0.5 nd<0.5 2/25~03 nd<0.5 nd<0.5 .... nd<O]5 ' '-nd~o.5 ' ' nd<5o N,~ ...... r~d~-.~ ....... 'n-d<'0~ ~ n~0.5 .... nd'~0.-5- nd~-0~'~' E2C Remediation, LLC T3-5 " Project Number 1801BK03 ,2" July 31, 2003 TABLE 3 SUMMARY OF HISTORICAL GROUNDWATER ANALYTICAL DATA MR. FAST SERVICE STATION 600 Brundage Lane Bakersfield, California WELL ID DATE ........... ~ ........... 1 ........... ..T. ........... J ............ .E. .......... J ...... i.....,x. ................... .T...P...H.,,g. ............ .,T..P...H...d. .............. ..T..B..A.. ............... ..M.t..B..,E. .............. ,D.!..P...E. ............ ..E...T..B.,,E' ........... .T.,.A..M...E....' (pg/L) 3/27/97 0.98 5.90 0.92 5.80 60.00 NA NA NA UA NA NA 10/20/98 "-<0.5 <0.5 <0.5 <015-' :- <5'0 ......... NA ......... I~,~, ........... NA ........ N~, NA 1/11/99 <50.0 5.30 <0.5 2.80 <50 . NA NA <0.5 NA NA ....... NA ...... 5/12299 <0.3: ' 'i~i'05 0.62 4.67 <500 UA NA <2.0 "NA 8/20/~)9 <0.3 <0.3 <0.3 <0.6 <500 NA NA <1.0 UA NA NA 12/7/99 NA NA NA NA NA NA NA NA NA NA NA 3/30/00 <0.3 <0.3 <0.3 <0,6 <500 NA NA <0.5 NA NA NA 7/3/00 <0.5 <0.5 <0.5 <0.5' - <50 NA ' NA ~0.5 --' NA NA "NA'~ 1/3/01 nd<0.50 nd<0.50 nd<0.50 nd<0.50 nd<50 NA' nd<5 nd<0.50 nd<0.50 nd<0.50 nd<0.50 MW-6 3/2/01 nd<0.50 nd<0.50 nd<0.50 '-nd<0~5~ nd<SO NA · nd<5 - nd<0.'5-0-' nd<0.50 nd<0.~0' nd<~).'50 6/4/01 .nd<0.5 nd<0.5 nd<0.5 nd<0.5 nd<50 NA nd<2.5 nd<0.5' nd<0.5 nd<0.5 nd<0.5 8/6/01 nd<0.5 nd<0.5 nd<0.5 nd~0.5 -i1850 'NA nd<2.5 nd<0.5 nd<0,5 nd<0.5 nd<0.5 12/6/01 6.41 270 77 25-5 2,150 'NA ..... n-d<2.5 ' -~<0.5 nd<~).~ 'nd<o.5 ~d~<0.5 2/18/02 nd<0.5 5.8 nd<0.5 25 150 NA nd<2.5 nd<0.5 nd<0.5 nd<0.5 nd<0.5 5/22/02 ' 0.~--. ~<0.5 nd<0.5 ~5- - i-80. NA ...... nd<2.5 n'd<0.~' - nd<0.5 "nd<0.5 ~d<0.5 8/21/02 1.9 7.6 0.7 5.4 60 NA nd-<2.5 nd<0.5 nd<0.5 nd<0.5 nd<0.5 12/5/02 nd~0.5 nd<0.5 1.3 1.5 nd<50 ''UA- '-'~d<2.5 nde0.5'' nd<0.5 nd<0.5 ' nd<O~5 2/24/03 nd<°.5 nd<0.5 nd<0.5 nd<0.5 912 -~A nd<2.5 nd<0.5 nd<0.5 nd<0.5"' nd<0.5 E2C Remediation, LLC T3-6 Project Number 180 leK03 ,2' · July 31, .2003 TABLE 3 SUMMARY OF HISTORICAL GROUNDWATER ANALYTICAL DATA MR. FAST SERVICE STATION 600 Brundage Lane Bakersfield, California a I T I E I x I' TPHg I TPHdl TeA/ MtBE I DIPE I ETBE I TAME WELL ID DATE (pg/L) 3/27/97 2,400 24,000 2,300 1_4,000 .1.40,000.'!. NA ..... NA ................. NA . NA NA 10/20/98 110 25,000 3,500 27,000 150,000 NA NA 150 NA NA NA 1/11/99 220 31,000 4,200 31,000 120,000 NA NA 380 NA N~.. · NA 5/12/99' NSFP NSFp' ' NSFP 8/20/99 NSFP NsFP NSFP NSFP NsFP NA NSF~fi 12/7/9g NSFP NsFP'- NsFP N~-~:p '-N~-~P NA ................ ~ ........ ~S'F-I5 ................... 3/30/00 NSFP NSFP ' - -N'~FP ' I~FI W3/O0' NSFP 1/3)0i NSFP NSFP NsFP NSFP NSFP UA ' N~i:p .... NSFp NSiEP- N'SFP NSFP 3/2/01 <20 91400 .... 4,100 '28,000 24,940 ' ' NA ' <:~00 <'20 <20 "<20 <20 MW'7 6/4/01 <50.0 5,730 3,590 'i 3,~)30 '87,960 - . . NA <250.0 ..... <50.0 <50'.0 <50.0 <5(~i0 8/6/0'1 <50.0 11780 -' 2,33'0 ~'0,600- 35,500 NA <25016 ....... ~:50~0 <50.0 <50.0 <50.0' 12/7/01 nd<0.5 2,315 1,120 ~.,~90 ....... _42,835 _ NA .' nd<215 ' 'n-d<0:5 nd<0.5 nde0.5 nd<0.5 2/i9/02-" NSFP N§FP NSFP NSFP NSFP NSFP NSFP NSFP NsFP- NsFP NSFP 5/22/02 1-.8 - 300. 'nd<0.5 31120 31,500 '-NA · nd~.5- ....... r~l-<O.~ nd<Of5 ' -n'd~6'~5"' nd~Oi5 dup nd<0.5 440 nd<0.5 3,370 35,000 NA nd<2.5 .nd<0.5 nd<0.5 nd<0.5 nd<0.5 8/21/02 nd<0.5 810 810 5,650 94,000 NA nd<2.5 nd<0.5 nd<0.5 nd<0.5 nd<0.5 12/5/02 nd<O.5 1,1180 4,260 4,630 :1'3,'900 NA nd<2.5 nd<Of~5 nd<O.5 ' nd<O.5 nd<O'.5 2/24/03 nd<0.5 . 170 7,300 7,200. _1.,_170 ...... NA.' . 'nd<2-5 i .i n_d_<0:5., nd<0.5 . ri.d<0.5 . nde°.5_ E2C Remediation, LLC T3-7 Project Number 1801BK03. ' "~"~ July 31, 2003 TABLE 3 SUMMARY OF HISTORICAL GROUNDWATER ANALYTICAL DATA MR. FAST SERVICE STATION 600 Brundage Lane Bakersfield, California I B I I J ..x. ....... T..g l....?.".,%l ........ ....... ] .Mt.B.E. ..... DIP.E ...... E...T..B...E......L.....T...A....M..E.... WE,, O^TE [ ....................................................................... ..... .... i .......................... ~g/L) ! 7/3/00 820 64,000 6,300 73,000 260,000 NA NA 550 NA NA NA · 1/3/01 34 45,000 5,000 30,800 40,910 'NA <0.50 3/2/01 34 53,000 4,000 26,'000 34,280 'NA <2,000 <200 ' <200 <200 <200 dup <200 48,000 4,100 26,000 33,610 NA <2,000 <200 <200 <200 <200 6/4/01 nd<50.O 43,560 3,770 .. 1_._4,760 64,320 NA nd<250.O nd<~o.o nd<50.O nd<50.O nd<50.O 8/6/01 nd<50.0 ' ' 40',070 :~280 16,800 70,350 NA 'nd<2501.0 "~'d~50~0 ' -'nde50.0 nd<50.0 -nd<50.0 MW-8 12/6/01 nd<50.O 31,075 51'~ 60 i'8,650 i 07,33'5' 'NA '~d<250.0 ' nd<50.O nd~O.O nd<50.O nd<50.O 2/1'8/02 0.6 1,100 1,410'' '3,270 27,500 .... N~ .... nd~:~i5 ' nd<5.-5 ....... nd<0.5 nd<~).5 '~d~).5 5/16/02 nd<0.5 6;010 1,800 4,690 74,000 NA nd<2.5 nd<0.5 nd<0.5 nd<0.5 nd<0.5 8/21/02 nd<40 32,760 3,940 16,870 113,000 NA nd<200 nd<45" nd<40 nd<40 nd<40 12/6/02 nd<0.5 19,900 1,270 14,380 54,000 NA .... nd<.2.~ . _nd<0'5 ..... .n_cl~-5 nd<5.5 ri.d<0:5 . 2/24/03 7/3/00 <0.5 <0.5 <0.5 <0.5 <50 · NA NA <0.5 ' NA NA NA 1/3~01 nd<0.50 nd<0.50 nd<0.50 nd<0.50 nd<50 NA nd<5 r~-<0.50 nd<0.50 nd<0.50 nd<0.50 3~2/01 'nd<0.50 nd<0.50 nd<0.50 - 'nd<0.50 nd<50 NA ncl<5 nd~0.50 nd<0.50 nd<0.50 nd<0~50 '6)4/0i 'nd ~<0.5 · nd <0.5 nd ~0.~' ncl'<o-.~ ncl<s0 -.- UA- nd<-2.5 nd <0.5 nd <0.5 nd <0.5 nd<0.5 81~1-0':1 nd"<5~5 '-n~ <0.5 nd <o.5 nd"<o.5 ' ~-d~50 ...... NA ..... -~;d<-2.5" nd- ~0.'~ .... 'nd <5:5" ' nd ~015'" nd~.5 12/6/01 32.9 555 1~'5 ..... 425 '-2,650 NA · _ nd<2.5- - nd-<o~5 nd ~o.5 '~d <5.~ nd<015 MW.9 ...................... 2/18~02 7.3 10 nd <0~ ............ 7-9' ..... 380 ......... ~I-A' ' ' nd~2.~3- - 5~16)02 - 2.i- - 8-~- 6.6 ...... 6~ .... 9~)0 ..... N~- nd<~)~~ .... nd ~0'.-5 --ncl <0.-5 nd <0.5' - nd-<0.5-- 8/21/02 ' 1.8 7;9 2.8 9.5 50 -NA" . nd<2.5 ' nd<'0:5 nd<0.5 nd<0.5 nd<0.5 ! 2/5/02 nd<0.5 nd<0.5 2.2 5.3 nd<50 NA nd<2.5 ncl-<0.5 nd<0.5 nd<0.5 nd<0.5 2/25/03 nd<0.5 nd<0.5 nd<0.5 nd<0.5 'nd<5© NA nci<2.5 nd<0.5 nd<0.5 nd<0.5 nd<0.5 E2C Remediation, LLC T3-8 Project Number 1801BK03 ~ July 31, 2003 TAI~'LE 3 SUMMARY OF HISTORICAL GROUNDWATER ANALYTICAL DATA MR. FAST SERVICE STATION 600 Brundage Lane Bakersfield, California : .......... ........... 1 ........... ........... 1 ............ .......... ] ........... ..x. ................... ...... ........ .?.*.. ....... ....... .............. WELL ID ·DATE ~g/L) / 7/3/00 <0.5 <0.5 <0.5 <0.5 <50 NA NA <0.5 NA NA NA i/3/0'i" nd<0.50 ' -nd-~0150- nd<0.50 · nd<0.50 ' - -nd<50 ......NA '- -nd;~)-.50- nd-~5'0 · nd<0.50' nd<0.50-'nd<0.50 312101 nd<0.~0 nd<0.50 nd<0.50 nd<0.50 nd<50 NA nd<0.50 nd<0.50 nd<0.50 nd<0.50 nd<0.50 6/~/01 .... nde0.5 .... :nd~0~5 nd<0:5 .... nd<0:5 ..... n~t'<50 ' ~iA ....... ~-(J~i5 nde0.5 ...... r~d<-0~5' ' ~d<0'.5 ..... nd<0:5-- - 8)6)0i nd<0.5 12/6/01' 4.69 210 65 230 'i,735 NA ' ~d<~.5" n'd'<~3'.5 nde<0.5 "nd<0.5 nde0.5' MW-10 2/1~)0~' ' nd<o.5 '14 · 5/16/02 1.6 99 ~.8 67 470 NA nd<2.5 . nd<0.5 nd<0.5 nd<0.5 nd<0.5 8/21/02 1.1 4.9 ' 1~7 ' ' 4..~ 50 NA nd<2.5 nd<0.5 nd<0.5 nd<0.5 nd<0.5 'i2/5/02' nd<0~5 n~<0~5- ' i'.3 '- ' ~1~ ....... i60 -N,~ ......... ~i-;-2~,~ ~d-~.~-'- --r:J-~<015 - nd'~-0.5~ ~-~-5-' 2/25103 nd<0.5 nd<0.5 nd<0.5 nd<o.5 1,570 NA nd<2.5 nd<0.5 nd<0.5 nd<0.5 nd<0.5 7/3/00 <0.5 <0.5 <0.5 <0.5 <50.0 NA NA <0.5 NA NA NA MW-11 i/3/01 nd<20 - ' 3,600 2,600 t16,300 ' 12,050 NA ..... nd<200' "n~i<20 'nd<20 " n~l~-20 ' nd'<~o- 3/2/01 NSWS NSWS NSWS NSWS NSWS NSWS NSWS NSwS NSWS NSWS NsWs 3/2/01 Well taken out of'service, silted up to 12 feet from bottom, replaced by Mw-i 1Ri converted into VE well 6/4/01 540' 11,980 1,390 7,230 54,410 <50 nd<250.O nd<50.O nd<50.O nd<50.O nd<50.O 8/~/01 866 29,850 21425" '1-3,6~6 57,4~5 '-NA .... nd~250'~0 'nd~50.0 'nd<50.0 nd<50.0 nd~5~.o' i227/0i ' n~<'o~5 -440 N D 4,415 6,775 ' NA nd<2.5 ~ci<O.5'' nd<0.5 nd<0.5 ' nd<of5 2/i8/02 ..... i'40 1',560' .... 1-i090 .......... '2~4,~0 .... 2~,000 ...... ~IA ........~i(J<2:-~ - ~d~0'.5 .... nd<0.5 nd<0.5 .... n~l~0.5-'- MW-11R duplicate 140 1,320 1,063 2,490 281000 NA nd<2.5 nd<0.5 nd<0.5 nd<0.5 nd<0.5 5/22/02 45 15,080 36 '3,050 19,000 ~qA nd<2.5 nd'~<o.-5 ...... nd<0.5 nd<0.5 ' nd<'0.5~ 8/21/02 nd<40 33,280 130 16,030 108,000 NA nd<200 nd<40" nd<40 nd<40 nd<40 12/6/02 nd<0.5 29,150 nd<0.5 8,930 64,700 NA nd<2.5 nde<°.5 nd<0.5 nd<0.5 nd<0.5 2/24/03 nd<0.5 25,000 4,000 19,500 48,500· NA-" nd-<2.5 ' nd~0.5' nd<0.5 nd<0.5 nd<0.5 E2C Remediation, LLC T3-9 Project Number 1801RKO3 ~-~ July 31, 2003 TAI~LE 3 SUMMARY OF HISTORICAL GROUNDWATER ANALYTICAL DATA MR. FAST SERVICE STATION 600 Brundage Lane Bakersfield, California I B I' T I E / X TPHg I TPHdl mBA / MtBE' I D PE I ETBE I' TAME WELL ID DATE r ............. · .............................................. ; .............. ' ...................................... (pg/L) : ............................................... ............................. 6/4/01 NSFP NSFP NSFP NSFP NSFP NSFP NSFP NSFP NSFP NSFP NSFP 8/6)01 NSFP NSFP NS'F~P NsF'p ' 'NsFP - N~FP NSFP'- N,~FP" NSFp NSFp NS'F~P' 12/7/01 NSI~P NsFP NsFP' NSFP - ' N-~FP NSFI~ .... NSF~P .... N-s~P ' 'NS~P NSI~P .... NSFP 2/19/02 NSFP 'N~FP NS~P -N-SFP -' 'NSFP N~3"I~P MW-12 5/23)0-2 nd<0.5 910 970 10,910 78,000 UA nd<2.5 nd<0.5 nd<0.5 8)2-2)02 nd<0.5 685 1,010 4,280 78,000 NA nd<2.5 nd<0.5 nd<0.5 nd<0.5 nd<0.5 .... i~5)02 ' nd<0.5 430 1,500 5,200 7,910 NA nd<2.5 nd<0.5 nd<0.5 nd<0.5 nd<0.5 2/24/03 nd<0.5 408 5,500 5,800 11,700 NA nd<2.5 nd<0.5 nd<0.5 nd<0.5 nd<0.5 6/4/01 nd<50.0 nd<50.0 nd<50.0 nd<50.0 5,580 NA nd<250.0 nd<50.0 nd<50.0 nd<50.0 nd<50.0 8/6/01 NSFP NSFp NsFp N~3FP NSFP NSFP .. 'NS'FP. i .... NSFp NSFP NSFP NSFP 12)7/0'~ 115 '61550" 41690' ' --'i4'~8-i5 ' 17-8,900 UA nd<2.5 nd<0.5 nd<0.5 nd<0~5 nd<0.5 ' 2/i9/02' ' NS'F~-' -' ~S-FP NSFP' ' 'NsFP ..... I~S-F-P 'I~'~FP ....... NSFF~ ........ N~3~:'I~ .......... NsFp NSFP "N§~:-i5- -' MW-13 '- 5/23/02 NSFp .... N-S'F~P ' ' NSFP ..... NSFp NSF'I~ N'~FI 8/22/02 nd<40 1,490' 890 "2,900 - 137,00-0 i~,~, ...... r~-cl<20-0 -- . ~-d-<~40 .... nd<40, nd<40 nd<40, 12/6/02 14 7,020 1,980 8,420 "'40,900 .... UA ....... nd-~215" nd<~0.5 nd<0.5 nd<0.5 nd<0.5 ' duplicate 20 7,660 5,520 9,110 38,000 NA nd<2.5 nd<0.5 nd<0~5 nd<0.5 nd<0.5 2/24/03 1,200 4,200 6,800 13,500 1,140 NA nd<2.5 nd<0.5 nd<0.5 nd<0.5 nd<0.5 E2C Remediation, LLC T3-10 Project Number 1801BK03 ' "~ July 31, 2003 TABLE 3 SUMMARY OF HISTORICAL GROUNDWATER ANALYTICAL DATA MR. FAST SERVICE STATION 600 Brundage Lane Bakersfield, California B T E / X TPHg '1 TPHd I TBA / MtBE DIPE I ETBE I TAME , . (pg/L) 6/4/01 871 1 ,'494 371 1,057 9 240 <50 <25 0 <5.0 <5.0 <5.0 <5.0 8/6)~':1 160 - 'i-87- '' 1~0'- 138 104 NA <25.0 <5.0 <5.0 <5.0 <5.0 Duplicate 152 114 137 113 82 NA <25.0 <5.0 <5.0 <5.0 <5.0 12)7-/'0:1 - 65 nd<0~5 '- 7-5- '-2~.35 "-2,400 .... NA'- - nd<-2.~ ........ ~d'~0.5 ' 'n(:J~0.5 .... r~d~0.5 nd-<0.5 2/18/02 2 8.2 37 31 590 NA 1 oo nd<0.5 nd<0.5 nd<0.5 nd<0.5 8/22/02 19 13 21 83 2,040 NA nd<2.5 nd<0.5 nd<0.5 nd<0.5 nd<0.5 MW-14 . _duplicate . 18 10 19 . _87 ........ _2_~.!.20- ......... NA ....... _.n_d_<_2:.5_ ........... nd<0:5...nd<_0.5 . n.d<_O:_5., n_cl(0:5 12/5/02 3.i '- 1-1~ ....... ~6 101 1,860 NA nd<2.5 nd<0.5 nd<0.5 nd<0.5 nd<0.5 8)22/02' 19 13 .... 2i 83 .... 2~,0~,0 UA ...... r~d~2.5 ..... ~-d'~5 ' ' 'nde0.-5'- nj<o'.5- ' nd~0]'5'- duplicate 18 10 19 87 2,120 NA nd<2.5 nd<0.5 nd<0.5 nd<0.5 nd<0.5 - i2),~-)02 -'' 3.1 '-18 16- 101 1,860 ' 'NA ....... nd-~2.5 nd~o'.~ nd<0.5 -~d<0.5 ' nd<0.5 duplicate 24.8 27.5 11.8 38.1 1,6.20 NA nd<2.5 nd<0.5 nd<0.5 nd<0.5 nd<0.5 12/7/01 NSWD NSWD NSWD NSWD NSWD NSWD NSWD NSWD NSWD NSWD NSWD 2/18~02 NSWD NSWD NsWD NSWD NSWD NSWD NSWD ' N~WD NsWD NSWD NsWD 5/22/02 NSWD NSWD NswD NSWD NSWD NSWD ' NswD ~lSwD NSWD 'NSwD' NsWD MW-15D 8/22/02 NSWD ' 'NSWD NSWD NSWD NSWD N~wD I~'SWD NSWD' NSwD NswD NSWD 2/24/03' - NSwD NsWD NSWD NSwD ' 'NswD NSWD NSWD NSWD NSWD NSWD NSwU 12/7/01 nd<0.5 nd<0.5 nd<0.5 nd<0.5 '85 NA nd<2.5 ND ND ND nd<0.5 2/18/02 NSWD NswD ' NswD NSwD NswD NSW'I~-' ' -NSWD NSWD NSWD NSWD NSWD 5/22/02 25 4,670 nd<0.5 3,700 10,000 NA nd<2.5 nd<0.5 nd<0.5 nd<0.5 nd<0.5 MW-15S 8/22/02 nd<0.5 nd<0.5 nd<0.5 nd<0.5 -nd<50 NA nd<2.5 nd<0.5 nd<0.5 nd<0.5 nd<0.5 12/~702 . nd<0.5 nd<0.5 22 ' ._ 21.1 .... nd<50 '- NA -- nd<2.5' nd<0.5 nd<0.~ nd<0.5 'nde0.5 2/24/03 nd<0.5 nd<0.5 nd<0.5 nd<0.5 nd<50 NA nd<2.5 nd<0.5 nd<0.5 nd<0.5 nd<0.5 E2C Remediation, LLC T3-11 Project Number 1801BK03 ? July 31, 2003 TABLE 3 SUMMARY OF HISTORICAL GROUNDWATER ANALYTICAL DATA · MR. FAST SERVICE STATION 600 Brundage Lane Bakersfield, California I / B T I E ! X TPHg TPHd TBA MtBE DIPE ETBE TAME WELL ID DATE [ .................................................................................. ~i ............................................................... 12/7/01 NSWD NSWD NSWD NSWD NSWD NSWD NSWD NSWD NSWD NSWD NSWD 2/18/02 NSWD NSWD NsWD NSWD NSWD ' ' NsWb' -NsWD ' ~isWD NSWD NSWD ' 'NS~vD 5/22/02 NSWD NSWD NSWD NsWD NSWD NSwD ' NsWD NsWD NsWD NswD 'NsWD MW-16 8/22/02 NSWD NSWD NswD NSWD NSWD 'NsWD ' NsWD- ' NswD NswD NSWD N'swD 12~5/02 NSWD ' NSWD ..... NsWD ' NswD "' ~SwD ..... N~/~ Nsw~ ...... N--S-v~D .... N'~WD ' NSwD N~wI~'~ 2/24/03 NSwD. ' NSwD -NSWD NSWD NswD ' ' -NSW'D"' "NSW-D 'i~WD' NSWD NSWD- -NSWD 12/7/01 · NSWD NSWD NSWD NSWD NSWD NSWD NSWD NSWD NSWD NSWD NSWD 2/18/02 NSWD NswD NSwD NSWD NSWD NSWD NsWD NSwD · NSWD NSWD NSWD-' 5/22/02 NSWD NSWD NSwD 'NswD N-SVVD~ NSWD " NswD ' 'NSWD "NSWD. 'NswD N~;WD MW-17D 8/22/02 NSWD NSWD NSWD NSWD NSWD NSWD' NSWD " N~WD NSWD NSWD uSwD ' i'2/5~02 NS~/D NswD NSEC) .... NSWD 'N~WD' NSWD ...... r~V'D ' i~S'WD NswD~' Ns'wD NswD ' 2/24~03 NSWD NSWD NSWD Nsw'D NswD NsWD' 'NswD 'Ns-wu NSWD NSWD NswD' 12/7/01 nd<0.5 nd<0.5 nd<0.5 _.n_d_<0:_5 ....... 1_35 . ._ NA ..... nd.<2.:5___ nd. C0.5 nd<0.5 nd<0.5 nd<0.5 2/i8/02 nde:6.5 nd<'0-.'5 -- ~d~0.5 -" nd<0.5 nd<50 NA nd<2.5 nd<0.5 ' nd<0.5 nd<0.5 nd<~);~ 5/22/02 nd<0.5 nd<0.5 nd<0.5 nd<0.5 nd<50 NA nd<2.5 nd<0.5 nd<0.5 nd<0.5 nd<0~5 MW-17S 8/22/02 nd<0.5 nd<0.5 nd<0.5 · nd<0.5 nd<50 ~A "nd<215 .... n'd-<-0.5 nd<0.5 nd<0.~5' nd<0.5 12/5-/02 nd<0.5 nd<0.5 nd<0.5 nd<0-.5 r~d<50 NA ~ nd~2.5 '~d<0.'5 nd<0.5 nd<0.5 nd<015 2/24/03 nd<0.5 nd<0.5 nd<0.5 nd<0.5 nd<50 NA nd<2.5 nd<0.5 nd<0.5 nd<0.5 nd<0.5 E2C Remediation, LLC . T3-12 '? July 31, 2003 Project Numbe~ 1801BK03 TABLE 3 SUMMARY OF HISTORICAL GROUNDWATER ANALYTICAL DATA MR. FAST SERVICE STATION 600 Brundage Lane Bakersfield, California B T · E I x = TPHg I TPHd I TBA I MtBE DIRE I ETI:IE I TAME WEU_iD D,,¥rE [ ......................... I ......................... J ......................... ., ................................................... , ...................... , ......................... · ......................... , ...................... ' ...................... ' ..................... / (pg/L) 8/22/02 36 nd<0.5 4.0 4.5 nd<50 NA nd<2.5 nd<0.5 nd<0.5 nd<0.5 nd<0.5 12/5/02 .... '~'.1- "' nd<0.5 ' - 2.-0 ' ' 0.8 nd<SO NA nd<2.5 nd<0.5 nd<0.5 nd<0.5 nd<0.5 MW-18 ~2~,/03 n~l'<'01'5' nd<~).5- .... nd~(~.5- .... n~..<-0.5' nd<_5_o ...... NA ....... _nd?_2_'5_ ..... _nd<0_.5 _. nd<O:5_ nd<0_.5 ~ nd_.<~:5.._ Notes: Sampling performed by E2C starting 01/03/01 MTBE analysis by EPA Method 5030/8020 from10/20/98 to 1/3/01 NSWD = Not Sampled this Quarter; well dry MTBE analysis by EPA Method 8260b from 1/3/01 NSFP = Not sampled this quarter due to presence of free-product Results in micrograms per liter (pg/L) = parts per billion (ppb) NSWS = Not sampled, well dry, casing silted up 12 feet from bottom B = Benzene T = Toluene DIRE = Diisopropyl Ether TAME -- Tertiary Amyl Methyl Ether E = Ethylbe'nzene TBA = Tertiary Butyl Alcohol (a.k.a. tert-bUtanol) ETBE = Ethyl Tertiary Butyl Ether TPHd = Total Petroleum Hydrocarbons as Diesel MtBE = Methyl tertiary-Butyl Ether TPHg -- Total Petroleum Hydrocarbons as Gasoline NA = Not analyzed for this compound X = Total xylenes ND = Below Practical Quantitation Limits: BTEX-0.5 pg/L, TPHg-50 pg/L, and MtBE/DIPE/ETBE/TAME~0.5/./g/L; TBA-2.5 pg/L.. E2C Remediation, LLC T3-13 Project Number 1801BK03 ~' >~ July 3 I, 2003 -- TAI~LE 4 ' SUMMARY OF ONSITE VE/GASS MONITORING DATA Mr. Fast Service station 600 Brundage Lane Bakersfield, California Cumulative Cumulativeinlet ~ Weti Well Well Well DilutionField Field Cumulative CumulativeCumulative Date Calendar Operating Operating Flow Chamber Stack VE-2 YE-3 MW-1NE-4 MW-8/VE-5 Air TPH inTPH outLbsJHr. Lbs. Lbs. Gallons MonitoredDays Hours Hours (scfm)% LEL Temp. (°F) Temp. (°F) valve valvevalve valve valve (ppmv)(ppmv) Extracted ExtractedDestroyed Extracted 4/4/02 0 3485.0 3 261 4 .650 ....~_5_7 0 0 _ . .O_ . 0.. C ...... 950_ ..... 5~2_ _ _3.? _ 10:1 .... 10 `1:5_ 4/15/02 11 3747 1 265 1 ' 276 3 668 679 C C O O C 400 2 1.5 586.1 580 90.7 4/17/02 .... _1.3_ . _3789.1 .... 307.1 .. 235 4.. 67_6 .... 751 C C . 0 ..... 0 .... _C . ~_180' ...... 1 ...... 0:6 617.~4 611 95_.~ . 4~29/02 25 4076.1 594{1 2563 656 625 C C 0 ~ 0 C 390 3 1.4 1302.6 1290 201,5 5/6/02 .... _3~ .... 4232.0 . .~5~).0 .... 253.. 3 ..... 633. .61_1 _P_O P_O 0 0 ........... C._ __2-.00_ ....... 0 0-7 1_3~7_.9 .... 1._3~4 .... 21.§2_ _'6/14/02 40 ....... 4426.9 _ 947.9 . 252 ._ 3. ~631_ . _ 618 .PO P~O_ 0 0 ...... _C_ . _ ?5 ...... 0_,6` .... 0~,.3 .... 1461.4 _ 144_7 ..... 226:1 5/2.1/02 .47 4428.6. 946.6 283 3 658 615 ~ .0 0 .... 0 ~ ..... 300_ _0..4 1._2 ..... 1,463.3 i .. 1449.... 226.4 6/7/02. 64 .... 46~7_,9' 1175.9 . 2~8 ~ ~68 6"~2 _ O. . C 0 ...... (~ .... ~ 4? 0.2 ...... 0.1 ...... 1.617.9 .... `1602 , .250.3 6/11/02 68 _ .47~2:8 1270.8 234 2 653 619 0., C 0 . 0 ..... C .56 1.2 0:2 1634.8 1610 . _252.9 _6~..!7-!_02 .... 74 _ ?.'(5~3._6 ..... 1271.5 228 _ 3_ _ 659 ..... 5_99 _0 C ...... 0. _ 0 ........ C _. 6_20 ...... _0.~_ .... 1.9 16,~6.2 1620 , 253.1 6/24/92 ..... 81 _ :49~0,0 1.438.0 187 3 661 .619 _0 _ ~; .... O. 0 ....... C . ._~6_ ..... 0:2" ........ 0.~1 1655.7_. .1639 2560 7/1/02 88 4920.8 1438.08 194 5 625 667 0 C 0 0 C 1000 1 2.6 1657.8 1641 256,4 7/10!02 97- .... 5106.1. .16_24..1 .... 26_'~ _ 4 614.. 656 0 _ C . 0... 0 .... C . _ .30 ..... O. . 0.1 1677.9 1661 259.6_ 9/17/02 166 5176.4 1694.4 320 2 640 598 0 C 0 0 C . . 49 .... 1. . 0.2,. 1~91.6 1675 261,~7 9/24/02 .... 1_73 . 5348.7. 1866.? .212.. 3. 630 601 0 C 0 0 C .... 20 ..... 0 . 0!1 . 1701.5 1685 263.2 .1__I/1~02 220 535_0:8 !668.8 338 2 653 594 0 C 0 PO C 68 0 0.3 1702.2 1685 263.3 11/12/02 222 5377.1 1895.1 241 3 ._ 652 ~11 0 C _ .. L._O 0 .... C ._ I 52_ ...0 .... 0_.2" '~7.06_.7 _'~690 ..... 264.0 11/22/q2_ .232 ..... 5615.5 2133.5. 235 . ,---_ ..6~8_ 609 _.O.. C. ,O_ . O .... C _ _ __38 . 0:6 ..... 0.`1.. 1735.6 _1718 268.5 12/2/02 242 5617.5 2135.5 310 4 657 625 C C O O C 120 0 0.5 1736.6 1719 268.6 1~/9/0~ ..... 2_.4~ ..... 565'~.4 2175.4 300 5 655 _ _ _597- ...... C. ..... C_. . O _ _ O ...... (~ ..... 90 ..... 0 p.4 ...... '~7-5.1.3 1734 .... _2.70.9 ._ 1/3/03 274 .5722.0 .... 2240.0 274 1.8 653 609 C C 0 0 C 200 0 0.7 1775,3 ..... 1758 274.6 1/9/03 280 5869.8 2387.8 211 0.9 640 617 C C 0 0 C 120 1.4 0.3 1826.1 1808 282.5 1/15!0~ . ~86 60~3._9 2531.9_ 248 1,? _ 63-6 .. .6!2 C _ _C_ .... (3_ .... 0 C _102 .... 0 ..... 0.3 .. 187-5.~ 1857 290.1 1/29/03 300 601~6_. 2532.6 334 1.6 642 602 C C O O C 250 0.2 1.1 1876.5 1858 290.3 2/10/03 312 6152.8 2670.8 273 1.3 624 592 C C O O C 80 0 0.3 191~7.5 1898 296.6 2/21/03 323 6153.7 2671.7 222 1.6 , 654 613 C C O O C 180 0 0.5 1918.0 1899 296.7 2/28/03 330 6320.9 2838.9 248 0.8 630 609 C C O O C 64 0 0.2 1954.1 1935 302.3 3/3/03 333 6393.0 2911.0 200 1.5 661 624 C ~ C O O C 20 0 0.1 1958.0 1938 '302.9 3/6/03 336 6468.5 2986.5, 164 1.3 633 600 C C O O C 78 0 0.2 1971.2 1951 304.9 3/17/03 347 6469.1 2987,1 226 2.2 644 589 C C . 0 0 C 120 0.4 0.4 1971.4 1952 304,9 3/25/03 355 6660.1 3178.1 208 0.8 629 608 ... _C ...... C__ _0 .0 C. 88 0 0.2 2018.9 1999 312.3 E2C Remediation, LLC Table 4-1 July 31.2~03 Project Number 180 I BK03 TABLE 4 SUMMARY OF ONSITE VF_./GASS MONITORING DATA Mr. Fast Service Station 600 Brundage Lane Bakersfield, California Cumulative Cumulative Inlet Well Well Well Well Dilution Field Field I Cumulative Cumulative Cumulative · Date Calendar Operating Operating Flow Chamber Stack VE-2 VE~3 MW-1/VE-4 MW.8/VE-5 Air TPH in TPH out! Lbs./Hr. Lbs. Lbs. Gallons Monitored Days Hours Hours (scfm) % LEL Temp. (°F) Temp. (°F) valve valve valve valve valve (ppmv) (ppmv) Extracted Extracted Destroyed Extracted 4/3/03 364 6872.3 3390.3 264 2.1 706 653 C C O O C 30 I I 0 1 2041.8 2021 315.8 Notes: scfm = standard cubic feet per minute LEL = Lower Explosive Limit ppmv = parts per million volume LbsJHr. = pounds per hour O = Valve Open C = Valve Closed PO = Valve Partially Open Table 4-2 E2C Remediation, LLC Project Number 1801BK03. July 31, 2003 ! · TABLE 5 SUMMARY OF ONSITE HYDROCARBON MASS REMOVED USING VF-JGASS (based on influent concentrations) Mr. FastService Station I 600 Brundage Lane · Bakersfield, California I ..... [ HCRemoved' CumulativeHCRemovedl' InfluentConcentrati°ns I F'°w"ate I RunTime Month/Year I (lbs/month/ I (lbs} (ppmv) (scfm) (daysl · Apr-02 0 0 0 0 0 ' ~M~,y-02 ..... 'i ~17 3 '- ' ' '1 ~5~-7.3 ............... (~78 ........... ~;5~, ........ 2.7 I Jun-6~ 339.4 ....... ii§~1~18 ........ 2b~" ...... 2'3_7. 21 265 .... ~,-~g-~ ' 1'~9 § ..... ~_',-28~'.~ .......... .......................... 2_3._1_ .......... 9 ~-~,--~ ......... ~-.~t- ................... -2~-'~'6-~4 ........... ~ ..... 44 275 0.1 Where: Hydrocarbons Removed (lbs/month) = Influent Concentration (ppmv) X 10- X Influent Flow Rate (scfm) I X 1 lb-mole/379.5 ft3 X 86 (lb/lb-mole) X 1440 (min/day) X Run Time (days/month) ' I Cumulative Hydrocarbons Removed (lbs.) ' BaSed on Influent Concentrations (Since April 2002) 3000 1000 .... ........ ' '" "': ..... ~ ....... ........................... I/ . ! o Apr-02 May-02 Mayo02 Jun-02 Jul-02 Aug-02 Sepo0 Oct-02 Novo02 Dec-02 Jan-03 Feb-03 Month-Year ! ! ! I E2C RemediatiOn, LLC Table 5-1 Project Number 1801BK03 July 31, 2003 TABLE 5 SUMMARY OF ONSlTE HYDROCARBON MASS REMOVED USING VE/GASS Average Daily Hydrocarbon Removal Rate (lbs/day) Based on Influent Concentrations (Since April 2002) 60 O :1:20 10 'o Apr-02 May-02 May-02 dun-02 Jul-02 ^ug-02 Sep-02 Oct-02 No¥-02 Dec-02 Jan-03 Feb-03 .................... '°-Pth '¥ear I E2C Remediation, LLC Table 5-2 I Project Number 1801BK03 July 31, 2003 I. 'TABLE 6 HYDROCARBON SUMMARY OF ONSITE MASS REMOVED USING VF_./GASS (based on %LEL) · " Mr. Fast serVice Station I · 600 Brundage Lane · ' Bakersfield, California . . . I HC Removed HC Removed. LEL Flow RateI Run Time .......... ,~_,'~_~)' ....... i Cumulative Mon~n/¥ear I (lbs/month) I (lbs) I (%) (scfm) , (days/month) I (lbs) Apr-02 0 0 - 0 0 0 i 0 i 'l~ay-02 · .1',~3-50.0 ..... 1 0_5[(~[_0_ '. i. ' ! _3_:~?_o 'i _i i_'-._.i~~4. i. i_i .. 2_Y_ ' 27 Junq~2 6~.4 .... 1,722.4 3.0% 237 21 21 'Jul-02 326;8 ..... ~,0~;~3 .... 214~./;o_ ..... 2-i(~ 14 14 Aug_O2 ' ~74.5 ' ' ' 2 4~3.7 4.0' ~ .... ~:~' ' 9 ' 9 " -" Sep-02 ~ .... 540 ' 2'147~.'~ '210'°/o ....... 3(~) 2 I 2 ~'.[ ' i ' ' 2'480'9 " 25°/, ....... ~75 oi ..... 011 Nov-O . ~ , · ..: ...................... -. D~(~L'0-2 33'~16 ..... 2;~t ~51 2.5% !~._ 27'1 ........... '1_1 ................... ].1 ...... "' Jan-o3 - '" '~61~ ........... 3,'~43 ~, .... i.,~;~,~ .... '~-~3 12.2 18.6 I '-~-b':03 ..... 2z~-.-i .............. 3;~9i-~5- ......... :[['~% .............. ' ~5-,~ ...... i ~'518 ................. :1 ~-7- ' M~r.03 33'1:3 "~[6'~2.8 ..... :1'~50/o~-i~[~_ ~...~._.~]__8._ ............ _23,0 ........ i ......... ~4:4_ Where. * Influent Concentration assume 100% LEL =13,800 ppmv calculated as hexane I LEL estimated from difference between oxidizer and stack temperature. 1% LEL = approximately 25° F difference Hydrocarbons (lbs/month) = Influent concentration (ppmv) x 10'" X influent flow rate (scfm) x 1 lb-mole/379.5 cf x 86 lb/lb-mole x 1440 min/day X run time (days/month) I Cumulative Hydrocarbons Removed (lbs.) Based on %LEL I (Since April 2002) 4000 ..... , I 3000 ............ ~' - ~: 2000 ....................... I 1000 ......... I 0 ^pr-02 May-02 May-02 Jun-02 Jul-02 ^u~-02 Sep-02 Oct-02 Nov-02 Dec-02 Jan-03 Feb-03 I Month-Year I E2C Remediation, LLC Table 6-1 ' ~ I Project Number 1801BK03 July 31, 2003 TABLE 6 SUMMARY OF ONSITE HYDROCARBON MASS REMOVED USING VE/GASS (based on %LEL) ~" Monthly Hydrocarbons.Removed (lbs./month) Based on %LEL ~ 1200 (since-April-2002) ^pr-02 May-02 May-02 Jun-02 Jul-02 ^u~-02 Sop-02 Oct-02 ~ov-02 ~oc-02 dan-03 : ' Month-Year ' o ' Monthly %LEL ' 4.5 yo (SinceApri~002)~ 3.5% .... ~ ....... / ' -~ .................... ' ' 2.5% ' ' 5% ' ' ' 0.0% ~ Apr-02 May-02 May-02 Jun-02 Jul-02 Aug-02 Sep-02 Oct-02 Nov-02 Dec-02 Jan-03 Feb-03 Month-Year ............. E2C Remediation, LLC Table 6-2 project Number 1801BK03 ~" July 31, 2003 TABLE 7 SUMMARY OF OFFSITE VF-JGASS MONITORING DATA Mr. Fast Service Station 600 Brundage Lane Bakersfield, California Cumulative Cumulative Inlet Well Well Well Well Wetl Well Dilution Field Field Cumulative Cumulative Cumulative Date ' Calendar Operating Operating Flow Chamber Stack VE-6 VE-7 VE-8 VE-9 MW-11 MW-12 Air TPH in TPH out Lbs./Hr. Lbs. Lbs. Gallons Monitored Days Hours Hours (scfm) % LEL Temp. (°F) Temp. (°F) valve valve valve valve valve vane valve (ppmv) (ppmv) Extracted Extracted Destroyed Exti'acted i_ 2/28/03 0 2352.50 2.68 212 1.1 1556 1450 3/40; C O O O O O 210 0.2 · 0.6 1.6 1.6 0.3 3/;1/03 ' I 2370147~ 20.9~ 2:19 4.4 '1524 i'414 C 'C 0 ' ~ 3~40 ~/4~ ' 0 ~0 0 .... 0.~ ..... ~.~ -~4~3 0.7 3/3/03 3 2418.60 69.10 218' 4.5 1555 i~4~,2 C (~ O ' ~ .... ~;~,~)- ~.C) '-- -~ .... Zoo 3J6/03-' 6 2420.59 ~.09 ' 2~14 4.2 1~50 1445 0 0 ' o' 0 ' ~ (3 .... ~)- 200 ' 0 - '3/6~03- -6 2~27.74 ~8.2~' - ~)14 -4.8- ~605 ' ~4~6' ' 0 ~' "0 ' 0'' -(~" 0 '(~ ..... ~' ~) - '-0~ ......... ~-6~'-' ~04.~ ~.~ Notes: scfm = standard cubic feet per minute LEL = Lower Explosive Limit ppmv = parts per million volume Lbs./Hr. = pounds per hour O = Valve Open C = Valve Closed 3/40 = Valve Open 314 E2C Remediation, LLC Table 7-I Project Number 1801BK03 July 31. 2003 APPENDICES Appendix A First Quarter 2003 Groundwater Purge Data Sheets Appendix B First Quarter 2003 Analytical Laboratory RepOrt E2C Remediation, LLC Appendices Prqiect Nvmber 1~70 I ~KO~ July $1.2003 APPENDIX A First Quarter 2003 Groundwater Purge Data Sheets I EjC Remediation, LLC Appendix A E2C REMEDIATION, LLC . ' V./ATEF QUALITY SA,,',,!PLING RECORD Gr,:.ur, d','.'ater Scientists: En'./irc, nme,".ta~ Coc3c!talts /~,~ID WELL DEVELOP,','IENT DATA 53co v,':,c,dmere Dr., Suhe 105 B,~k,r ..... d. CA 933~3 S.-'kMPLE ID OR WELL HO.: ~ ~ ~ I DEPTH TO WATER: I:..'1~ _ ! O ft., PROJECT NO.: ~."~.)OI ~.'.'.)IL.O '} TOTAL DEPTH OF WELL: ~-~ / ~ \'t ,/~ ~V/ METHOD OF PURGING: .~,,L SAM,°LED BY: PURGE CHARACTERISTICS TEMP pH SEC SAMPLE REMARKS TI.'.JE INTAKE RATE CUM. VOL WELL VOL (F:) (Ut',!ITS) (.'.~mhosl CONT,~OL DEPTH (GPM) (GAL) PUMPED cra) NO. (COLOR, TURBIDITY, ETC.).~_ I iz.s-~'l ~'?' I,o ~t 'To,'z '-/.~."z.. ,tz it ~ALIBRATION / STANDARDIZED --~' I 4' - 0.6525 ga!loWlinear foot It,;STRU;.1E,"IT RE '.Ot,"IG I I I 6' - 1 SPECIFIC ELECTRILCAL CONDUCTA,NCE - CALI~,~ATION / STANDARDIZATION I 74 718 1413 68,'38 I hNSTRU;.1ENT READING I I I . SAMPLED AT: kbS, FT. FIt:AL DEPTH TO WATER: ~ 5-'L'?-'" FT. * CASING VOLU,'.',ES_= "2'~'' GALS. IiOTES: · i E]C REMEDIATION, LLC WATER QUALITY SAMPLING RECORD Or.:ur, dw~ter Scier, tis:s: En'/fr2amentar Cons..;!ta.-,:s Al'iD V/ELL DEVEL'OP;,'tENT DATA 5300 Wcodmere. Dr., Suite 105 Bakers¢ield, CA'93313 SAMPLE ID OR WELL bIO.: ~v~ 2 DEPTH TO WATER: q PROJECT'NO.: ~. '-~ 0 I 0IL O '-'~ TOTAL DEPTH OF WELL: ~ ~, O & ft PROJECT NA,",IE: ~ ¢ F,/~ ~' 'F WELL DIAMETER: 2 , SAMPLED BY: '~4~- \'t / ~V/ METHOD OF PURGING' PURG~ CHARACTERISTICS TEMP pH SEC SAM:LE RSMARKS TIM5 INTAKE RATE CUM, VOL WELL VOL (F:) (UNITS) (:amhosl CONTFOL . DE~TH (GPM) (GAL) PUMPED cra) NO. (COLOR, TURSID[~, ETC.) ~ALIBRATION / STANDARDIZED BUFFER SOLUTION pH4.01 I [' 17.0 I pill0.0 Wa!lCapaclty: 2'- 0.1632gallor~,n-~-rloot I t 4' - 0.6528 galloh/linear loot INSTRUMENT RE '.OING J I 6', - 1.4~s8 ga:lo~linear SPECIFIC ELECTRILCAL CONDUCTANCE-CALISRATIOH/STANDAROIZATION ;TRUMENT READING SAMPLED AT: ~,O INOTES: · ! f EDIATIQN, LLC V/ATFR QUALITY S.&.',.IPLING RECORD Gr.:,ur, d,,v~,ter Sci?,tis:s: Envir2nment~i Cor. s:..:rta.-,ts A~".~ V','ELL DEVELO?,L'IE. NT DATA 53C0 Woodmere Dr.. Suhe 105 Bakars~!e:d, CA 93313 ,, S.A,,:PLE ID OR WELL NO.: ~ ~ ~ DEPTH rD WATER: l.~q.~_ PROJECT'NO.: "~ '9 0 I ~ I(.. O '~ TOTAL DEPTH OF WELL: .~'1'~.,~0 PROJECT NAME: ~ ~),... F/"":I ~' T' V'/ELL DIA?,IETER: '"~-'" SAMPLEDBY: ~\'I / ~V/ METHOD OF PURGING: I'~(_ PURo, C'HARACTERISTICS TE,'.iP pH SEC SAbJPLE R--MARKS. TI.ME INTAKE RATE CUM. VOL WELL VOL (F:) (UNITS) (:,tmhos/ CONTROL DEPTH (GPM) (GAL) PUMPED cm) NO. (COLOR, TURBIDITY, ETC.)~ I?--l~' 5~o" J.O ..O -10,'tg.~5', I¢/ (_lo,.,,A¥.-~,.~o ~,-~ 5~ I.O 2-. bfl:7*g,t¢, I~ ~' " ,z.z, 5~' I.° I (o I {,,'.k, 7.?g ,IE " ~H 72~LIBRATION / STANDARDIZED h'NSTRUME,"iT RE '..DING .t } I 6' - 1.4~35 garlorCinear Dot ':fFlC ELECTRILCAL cdNbucTA,*I~-~:~£TIO~7 STAN DAADIZATION t 74 I 718 14~3I 6868 ~ 586-:0 INSTRUMENT READING I I I I SAMPLEDAT: h~ ~. FINAL O?TH TOWATER: 4C fi FT. 3 CASING VOLU%',ES: ~'fg GALS. I NOTES: I E2C REM EDIATION, LLC WATER QUALITY,.¢.~;v;,e"' ,p,_ ,,,'-, ,o RECO. RD ---' Graund',,,'a',e: Scientists: Environme,~ta; Ccmsu!ta~',s AI~ID ~''/"""'' v', ,-LL DEVELOPL'1ENT DATA 53C0 Wcodmere Dr., Suhe 105 B~..<.ro,,. d, CA 933~3 PROJECT'NO.: & "~ O I G lC O '~ TOTAL DEPTH OF ',"/ELL: ~ 3- d:~ ~' f:. SAMPLEDBY: ~\'I / ~,V' METROD OF PURGING' .A'& LiFt .... PURGE C~ARACTERISTICS TEMP pH SEC SAMPLE REMARKS TI:..IE h',~TAKE RATE CUM. VOL WELL VOL (?) (UNITS) (:amhos/ CONTROL DEPTH (GPM) (GAL) PUMPED cra) NO. ('COLO,R, TURSIDI :T'Y, ETC.)L_ oq:q~ q q' 1 0 ~2&7. fl3 .i~ ~,c~ o~o~ CALIBRATION / SI'ANDARDIZEO =ER SOLUTION I pH 4.01 t I.' 7.0 pH 10.0 WaN Capa:;!7: 2'- O.1632 gaIloW',inear J I 4" - 0.6528 ga!lor~'I~near l'oot INSTRU:,I~,"iT RE '..OING I 6' - 1.4~$$ ga',lorCinear ;IFIC -iILCAL coNDucTANCE - CALI~.RATtON / STANDARDIZATION h"ISTRU,M ENT READING I I I I I SAMPLED ;,T: Lt,~ FT. FI,':AL DEPTH TO WATER: ~"~S-C~ FT. 3CASINGVOLU:,',ES: l~.~.q t GALS. INOTES: I I I E~C REMEDIATION, LLC WATER QUALITY Gr~Lmd',','ate." S.:ier,!i$~s: Envir~nmer, ta~ Ccr. sc2a.qts A~'I~ V/ELL D:-Vt-Lu, ,,,~EI',iT DATA ,~o,. ...... Dr., Sui:e 105 Baker$[ie;d. CA 53313 SAMPLED BY: ~ ~-t,/ ~V METHOD OF PURGING: PURGE CHARACTERISTICS TEMP pH SEC SAMPLE RE,MARKS TIM/ INTAKE I RATE CUM. VOL WELL VOL (F~) (UNITS) (~mhos/ CONTROL CALIBRATION/STANDARDIZED "FERSOLUTION I pH4.01 l' t7.0 I pH~0.0 j V,'erlOapa:ib,: 2'-O.~e32ga!lorVlinearroot 4" - 0.6523 ga!lor~'linear fool INSTRU,'JENT RE '.DING I 6" - 1.4.~33 gaUoW1inear [oc~ ~ PECIFIC ELECTRILCAL CONDUCTANCE - CALI~RATION / STANDARDIZATION NSTRUMENT READING I I I I S^,V,=LEOAT:k."l Fr. F~,UAt. D=,~'r~'rOWATr-R: ~ b.'-(O ~T. ~C^S~,,~OVOUU:.'.=S= S 5 I';OTES: ! EDIATION, LI.._'C - WATER QUALITY SAMPLING RECORD Gr,:,undv,'~',e: Scien',is',s: Envir.3nmen~al Cor'.ss'ta.":',3 AND WELL DEVELOP:,','IENT DATA 5360 Wcodmere Dr., Suite 105 Bakers~!e~d, CA 933t3 S&MPLE ID OR WELL' I"IO.:, ~'"~',.,'/"-' 6 DEPTR TO WATER: PROJECT i".lO.: i T.~ O I 0 lC O '~ TOTAL DEPTH OF WELL: oA-rE: O 2..,/' 2 Ci/O '3 CAS,N~ VOLU,',~: /, TI.ME INTAKE RATE CUM. VOL WELL VOL (F*) (UNITS) (;tmhos/ CONTROL DEPTH (GPM) (GAL) PUMPED cra) NO. (cO[oR, TURBIDITY, ETC.)~ I II ,~-z ~' I.o 'z.. S~.'774'-1 I, Iff t 1/¢5--~, ~-0 ' i.o G S'~..~ '?-5¢-,'', ~/t' ~H ~:A.L'IBRATION / STANDARDIZED -":ER SOLUTION pH 4.01 I I.' I 7.0 I pH 10.0 Well Capa:;tT: 2' - 0.1632 gafloWlinear !oot I I 4" - 0.6528 ga~lorv'linear foot INSTRUMENT RE ',Oh"~G I I 6" - 1.4~$ gatlor'Cinear PEClFIC ELECTRILCAL C~N.~UCTA,"ICE':~~ STANDARDIZATION 'NSTRUMENT READhNG I I I SAMPLEO/,T: L~ FT. FINAL DEPTH TO WATER: L.~ ~"',~'O FT. 3CASINOVOLUM=S: "t:77 oA,s. I 'iOTES: E'~-'-C REf'ClEDIATION, LLC WATER QUALITY SAMPLI,",IG RECORD Gr'.i, und',';a'.e: Sciar, tis:s: Environmer, tai Consuttan:s AND WELL DEVELOPMENT D,CTA 53C0 Wood,,-.~re Dr., Suite 105 Bakersf!e;d, CA 93313 S.-*,,:P~E ID OS WELL NO.: ~ ~ h DEPTH TO V'/ATER: H PROJECT'NO.: 1 '~' C) i ¢ lC. 0.'3 TOTAL DEPTH OF ',,.',/ELL: SAM?LED BY: ~'~ \'t / F~k/' METHOD OF PURGING: ¢ ...... PL}A~E ~Ah~¢TERISTI,~$ ' TE,'.'? pH SEC SAMOLE REMARKS TIME hNTA;'<E RATE CUM. VOL WELL VOL (F=) (UNITS) (:,tmhos/ CON'TROL DEPTH (GPM) (GAL) PUMPED cm) NO. (COLOR, TURBIDITY, ETC.) 5¢r~,,,, 6- obr).'"L -/0.0 ' )H CALIBRATION / STANDARDIZED INSTRU,',IE,"iT RE .'.DING t I I 6:' - 1.4d~,$ gallor'Clinear foot I I ;TRUMENT READING I I I I --------- SAMPLED/,T: L'I.~ FT. FINAL DE?TH TO WATER: ~ 6. '~,"~ FT. 3 CASING VOLUMES: ~.. ~ ~ GALS. I iOTES: I E~;C REMEDIATION, LLC WATER OU/,,LITY SAM?LING RECORD '""'- Grsur, d',,/a'.e: Sclar,~is:$: En'.fironment-~: Cc¢,s...;':tan:s A~D WELL DEVELO?,'/IENT DATA 53c0 V,'.:odmere Dr., Sulte 105 Bakersfield, CA 93313 PROJECT NO.: i '~ fO I 6lC 0 '3 TOTAL DEPTH OF WELL: 5 0.' ¢5 f: PROJECT ""' ~ PURGE CHARACTERISTICS TE,'J P pH SEC SAMPLE RE,MARKS -- TI.'.,I E INTAKEDEPTH (GpM)RATE CUM.(GAL)VOL WELL PUMPED VOL (F:) (UNITS) (.,.:mhos/ cra) CONTROL NO. (COLOR, TURBIDIT'Y,' ETC.) / ~H CALIBRATION / STANDARDIZED BLIFFERSOLUTIO,"J pH4.0~ ,~' 17.0 I pH10,O I V,'gflCap. a:;tT: 2"- 0.1632 ga![o~linear foot I I 4' - 0.6528 ga',loMlinear fcc[ INSTRLh',IE,"iT RE '..DING I 6" - 1.4.~$3 gaNor'clinear foc~ :iFIC ELECTRILCAL CONDUCTANCE- CALI$BATION / STANDARDIZATIO,'I I R_Ae~N,.', t I I h"q STR U,".I E N T ~ SAMPLED/,T: 't,,.[ (,O FT. FINAL DEPTH TO WATER: ~ %. ~ ~ FT. 3 CASING VOLU:,',=S= 2.~ GALS.. INOTES: I E2C REf.,,1EDIATION, LL'C I WATER QUALITY SAMPLING RECORD --'-' Grauad',,m',er Scie:',ds',s: Enviror, men~ar Co,%,..;ka.~',s AND WELL DEVELOP,','IENT DATA 5300 W.:odmere Dr., Su!te 105 B..~k.r ..... d, CA 93313 SAMPLE ID OR WELL I"lO.: ~v~ ~ ~ q. DEPTH TO WATER: ~ 5.',..~' q 'fi. P~OJECr ~,lo.: 1 ~ 0 ~ 0 Ic ,9 '3 ror^u D~=.P'l-H o¢ V/EU_: 6 PROJECT NAME: ~ p,... Fa 5 T WELL DIAMETER: SAMPLEDBY: ~\-t, Rk,/ METHOD OF PURGING: /'~1(~ LiiET PURGE CHARACTERISTICS TEMP I pH SEC SAMPLE TI:.IE h',ITAKE RATE CUM. VOL - WELL VOL (F:) (UNITS) (:.,mhos/ CONTROL DEPTH (GPM) (GAL) PUMPED cra) NO. (COLOR, TURSOi ,'FY, ETC.) H ~' :L O /oo. ' 7.72... ~' ,,.,,.,o · [ · I. )H CALIBRATION /STANDAROIZEO ;TRUMENT R5 '.,DING J J I 6' - 1.4~38 gaJIo~inear loot PECIFIC ELECTRILCAL CONOUCTAHCE - ~A~B~TIO~ STANDARDIZATION ~ 74 ~ 718 14t3 6868 ~ 5g~40 I . NSTRUMENT READING t I I I SAMPLED AT: % O ~. FINAL DEPTH TO WATER: ~q,O FT. 3 CASING VOLU:,',ES= ~' ~ I . GALS. E~'C REMEDIATION, LLC I WATER QUALITY SAMPLING RECORD Gr.z, undwate; Scientists: Ea'/ironmea'.a! Consu!tar,'.s I AND WELL DEVELOPt,'IENT DATA 5300 V/oodmere Dr., Sui:e 105 Bakersfie;d. CA 933~3 SAMPLE ID OR WELLNO.: ~/~-- tO DEPTH TO WATER: q ~' 30 ft PROJECT INAME: Iv~ 0'-.-' F/Gl ~ 'T' V/ELL DIAMETER: 2 DATE: 'O 72-:/2!6/O 3' CAS,NO VOLUME: ', 9' SAMPLED BY: ~/~ \'t ,/ (~b/ METHOD OF PURGING: Al(7_ /~1 ~'~' PURGE CHARACTERISTICS TE,'JP pH SEC I SAMPLE ' REMARKS TIME INTAKE RATE CUM. VOL WELL VOL (FC) (UNITS) (:.~mhos/ CONTROL DEPTH (GPM) (GAL) PUMPED cra) NO. (COLOR. TURBIDITY. ETC.)___ ~H ~2ALIBRATION / S'FANDARDIZED FFER SOLUTION pH 4.01 Ii ,'17.0 I pH 10.0 'i WaN Capac;,7: 2'. 0.1632 gaNoWiinenr I'oo'4. - 0.6528 ga,lon/IMear fool INSTRUMENT R5 '.DING J I 6" - 1.4~35 gaNorCinear i'oot.._._L._~ :IFIC ELECTRILCAL CONDUCTANCE - CALIBRATION / STANDARDIZATION INSTRU,MENT READING I I SAMPLED/,T: ~--O ~. ~ FT. FINAL DEPTH TO WATER: ~'0,0.~' FT. 3 CAShNG VOLU:.'.=S= t' 7 3GALS' I iOTES: Grour, d',',':,te: Scier, tists: Envi:.onmenta', Cc,%,?a:~ts AhlD V/ELL D:'-Vr___.LO, ,,I,'-F, I DATA 5380 ~,,',,'c. odmere D:., Suite 10:5 Bakers,'!e;d, CA 933.13` .................. PURGE C~ARACTERISTICS TEMP pH I SEC S.-t,.L! P L E REMARKS TIME INTAKE RATE CUM. VOL WELL VOL (F°) (UNITS)I (.'.~mhos/ CO,',iTROL DEPTH (GPM) (GAL) PUMPED cra) NO. (COLOR, TURBIDITY, ETC.)~ ::>H CALIBRATION / ,TANDARDIZED . .IFFERSOLUTION pH4.0~ t ,v 7.0 I! pill0.0 --I-' I 4' 0.6523 ga!lon.,'iin INSTRUMENT RE '.DING I I 6' - 1 ;PECIFIC ELECTRILCAL CONDUCTANCE - CALIB. RATION/ STANDARDIZATION INSTRUMENT READING f SAMPLED ;,T: ~"[ FT. FI:~AL DEPTH TO ~,IATER: (O~. t~ ~. FT. 80ASING VOLUM=S= GALS. INOTES: l_ ~........-- E2C REMEDJATION, LL'C WATER QUALITY SA,,~, LI,qe RECORD Gr.:,,jr, d',,later Sciar, tists: Environme,~ta~ Ccr, su!tar,'.s . AND WELL DEVELOP;/1ENT DATA 5300 V,'sodmere Dr., Suite 105 Bakers¢ie;d, CA, 93313 ................ PROJEcT'No.: ~ '1~ 0 I 6 lC O '3 TOTAL DEPT'H OF WELL: /~ DATE: C) 2,/2 ('1/O 3 CASING VOLUME: ',~.O TIM.= INTAKE RATE CUM. VOL WELL VOL (F:) (UNITS) (.,.~mhos/ CONTROL ' (COLOR, TURSIDITY, ETC.) DEPTH (GPM) (GAL) PUMPED cra) i NO. I ~ALIBRA~~IZ~I~' ' 'FFER SOLUTION J pH 4.01 IJ l' 7,0 JJ pH 10.0 . We[I Capa:it)': 4"2' .r 0.65280'1632 gallo~line~rga!l°~'linear footf°°t INSTRUMENT RE ',DhNG j j 6" - 1.4~S3 ga~lo~inear INSTRUMENT READING I J SAMPLEDAT: q~ ~. FINAL DEPTH TO WATER: k~-O~ FT. 3CASINGV~LUMES~ .fi-0 GALS. I NOTES: I 1 E2C REMEDIATION, LI'-C WATEF QUALITY S;,'!..!PLING RECORD Grz, und',va'.er Scian'Js',s: En'./ironmev,',a~ Cocsu[t~.'t,',s AND WELL DEVELO?;,'IENT DATA 53C0 Vlsod,"r, ere Dr., Suite 105 B.2kers~!e;d, CA 93313 AMPLE ID OR WELLNO.: ~~ t'~ DEPTH TO WATER: PROJECT'NO.: & ~OI ~ICO'~ 'TOTAL DEPTH OF WELL: PROJECT NAME: '~ ¢~ ¢~ 5 'T WELL DIAMETER: DATE: 0 2 2LI/O 3 CAShNG VOLUME: I,~ ga~:ons PURGE CHARACTERISTICS TEMP pH SEC I SAMPLE REMARKS TIME INTAKE RATE CUM. VOL' WELL VOL (?) (UNITS) (:.tmhosl CONTROL DEPTH (GPM) (GAL) PUMPED cra) NO. (COLO~, TURBIDLY, ETC.) )H ~ALIgRATIC~'N / STAI'IDAF1DIZED B~JFFER SOLUTION pH 4.01 t ~' I 7.0 I pH 10.0 V/all Capa:;t)': 2" - 0.1632 ga[lo~'linear IDOl I I 4" - 0.6523 ga~lo~linear foot INSTRUMENT RE '.DING [ I 6" - 1.4~3~ ga~lor¢inear loc: ~PECIFIC ELECTRILCAL CONDUCTANCE - CALIBRATION/STANDARDIZATION INSTRUMENT READING I I I I SAMPLED AT: ~ ~. FI:~AL DEPTH TO WATER: ~q, ] ~ FT. 3 CASING VOLU,'.tES= ~'~ GALS.' ! E~'C REM EDIATION, LLC WATER ?~ALITY S,".M?~.I,NG RECOP, D Gr:,usdv~ate: S,:isntists: En,/irsnmea'.a~ Cccsurtan:~ AND W~LL DEVELOP,,'IENT DATA 53C0 Wcodmere Dr., Su~e 105 Bakersf~e;d, CA 93313 ;AMPLE ID OF WELL NO,: ~~ ~ DEPT~ TO WATER: ~q' 7'Z PROJECT'NO.: !DO I 6~(O'~ TOTAL. DEPTH OF WELL: ~g-q ~. SAMPLEDBY: ~.~ ./ ~¢ METHOD OF PURGING' ~[& ~l¢~ PURGE C~ARACTERISTICS TEMP pH SEC SAMPLE RE,MARKS TIME INTAKE RATE CUM. VOL WELL VOL (F~) (UNITS) (;tmhos/ CONTROL DEPTH (GPM) (GAL) PUMPED cm) NO. (COLOR, TURSIDI~, ETC.~ L~E~ Y 6~ Y B.EJFFER SOLUTIO,"Ih, I pH 4.01 I.' 7.0 I pH 10.0 Wetl Capa:it)': 4'2"'- 0.65230'1632 ga!loWlinear footgaflor~,finear foot INSTRUMEt'IT RE ',O NG i · I 6' - 1.4655 ga~lorCinear loo__~ _ ;PECIFIC ELEC'I:RI'E'C'AL C(~N~UCTA,',IC~~TIO~TSTANDARDIZATION I 74 I 718 1413 68,38I 586':3 I i INSTRUMENT READING I I I I SAMPLED AT: "] ~ FT. FINAL DEPTH TO WATER: '"~ O ."~/0 FT.' 3 CASING VOLUMES= ~"~ ' ~ GALS. .! E2C REMEDIATION, LLC WATER QUALITY SAMPLING RECORD Groundwater Scientists: Environmental Consultants AND WELL DEVELOPMENT DAT~A 5300 Woodmere Dr., Suite 105 BakerslieId, CA 93313 SAMPLE ID OR WELL NO.: ~ ~ ~ ~ ~-'b DEPTH TO WATER: b ¢-~ ft PROJECT'NO.: I hO I 6~03 TOTAL DEPTH OF WELL: '~ ~. ~ ft PROJECT NAME: ~ ¢~,) ~ WELL DIAMETER: DATE: O ¢/ L ~/0-3 CASING VOLUME: gallons TIME INTAKE RATE CUM. VOL WELL VOL ~ (F:) (UNITS) (pmhosl CONTROL DEPTH I (GPM) (GAL) PUMPED I cm) NO. (COLOR, TURBIDLY, ETC.) >H CALIBRATION / STANDARDIZED BUFFER SOLUTION pH 4.01 ~ F:I 7,0 pH 10.0 Well Capacity: 2" - 0.1632 galloWlinear foot "~ 4" - 0.6528 galloWlinear foot RE.:'.,DING ] 6" - 1,4688 galloWlinear foot ~KCL SOLUTION pMHOS / CM ~ 25 C· ~ 74 718 1413 6868 58640 I SAMPLED AT: · ~. FINAL DEPTH TO WATER: FT. 3 CASING VOLUMES= GALS. I NOTES: E=C R EI'..,1EDI.ATION, LLC WATER QUALITY S,",,M?Lh",iG RECORD Gr,:,und',,,:~ter Sc~-n',is,'s: Envirsnme,~t.-,J Ccnsu!t-',n'.s AND WELL DEVELOPMENT DATA 5300 V;codmere Dr., Su~:e 105 B~k.r~,,. d, CA 93313 SA~,~PLE ID OR WELL HO.: ~~ I(~ DEPTH TO WATER: 3t-~~ PROJECT'NO.: ~ ~ O I ~1~ O '} TOTAL DEPTH OF WELL: ~ ~.30 PROJECT NAME: ~ ~, ~ ~ T WELL DIAMETER: ~" . PURGE CHARACTERISTICS TE~JP ' pH SEC SAMPLE .REMARKS TI%lE INTAKE RATE CUM. VOL WELL VOL (?) (UNITS) (:.~mhos/ CONTROL DEPTH (GPM) (GAL) PUMPED cm) NO. (COLOR, TURBIDLY, ETC.~ IH~ALIBRATION / STANDARDIZED BLUFFER SOLUTION t pH 4.01 I ,~ I 7.0 pH 10.0 Well Capac;t)': 2" - 0.1632 cjaNor¢linear r' t ~ 4" - 0.6528 ga:Ion/l/near hNSTRU,~,IE,",iT RE .'..Oh".iG I I 6., - 1.4555 garlor¢inear :,?,c ~LEC T~,LCAL C O,~ OU C T,~,~, C ~ - C,~'_, =.~,~'"'O~/S T ~,', O,-*R O,ZA T, O,', INSTRUMENT READING I I I I SA,',.1PLEDAT: '"~'~ FT.~Fi,'IALD?THTOWATER: '"7~...-~rO FT. 3CAShNGVOLU~,',=S= ~"~ ~GALS. NOTES: E2C REMEDIATION, LLC WATER QUALITY SAMPLING RECORD :' ~ Ground'°va!er Scientists: Envir::)amerltal Consukan~s AND V/ELL DEVF--:LOPMENT DAT'A'''~ 5300 Woodmere Dr., Suite 10::, B~x~rs,~,d, CA 93313 PROJECT'NO.: ! z~_ C)i (~'~ ~¢.~0 3 TOTAL DEPTH OF WELL: 7 ~_,,0 Z R PROJECT NAME: ~'/~/~ ~'~ ,J '/' WELL DIAMETER: '~., DATE: O ~//'2~Lf f 0 ? CASING VOLUME: 9a!!ons SAMPLEDBY: ~ /~/ METHOD OF PURGING: TIME INTAKE RATE CUM. VOL WELL VOL (F~) (UNITS) (:.tmhos/ CONTROL DEPTH (GPM) (GAL) , PUMPED cra) NO. (COLOR, TURBIDLY, ETC.). ~H CALIBRATION / STANDARDIZED BUFFER SOLUTION I pH 4.01 I ,v:t 7.0 pH 10.0 Well Capacity: 2" - 0.1632 gaflor'v'linear foo~ I 4" - 0.6528 gallon/linear foot I ;TRUME,"IT RE :'..DING t 6" - 1.4688 gallon/linear fool SPECIFIC ELECTRtLCAL C(~NDUCTANCE - (~AL'IB. RATIoN / STANDARDIZATION INSTRUMENT READING I SAMPLED AT: ~. FINAL DEPTH TO WATER: FT. 3 CASING VOLUMES= GALS. I NOTES: E~C REMEDIATION, LLC WATER QUALITY/,.... SAMPLING RECORD" ..:. Groundwater Scier, tists: Environmental Consultants AND V', ~-LL DEVELOPt./1ENT DAT-A"""" 5300 Woodnote Dr.', Suite 105 B~.kers~ield, CA 93313 PROJECT'NO.: ~'~..0 t 6 JL'..0'~ TOTAL DEPTH OF WELL: ~.,~..~ -.~,~ f( PROJECT NAME: ~'"~P,.,- ~,j "~ WELL DIAMETER: DATE: O ~,'/?.,.LJ ./f 0 "~ CASING VOLU,',4E: PURGE C'HARACTERISTICS TEMP pH SEC SAMPLE REMARKS TIME INTAKE RATE CUM. VOL WELL VOL (F:) (UNITS) (.umhosl CONTROL DEPTH (GPM) (GAL) PUMPED cra) NO. (COLOR, TURBIDITY, ETC.) · '~" t I 4' - 0.6528 gallon/linear foo~ INSTRU,",,1ENT RE :'.,DING i t I 6" - 1 4~$$ gaf on/ near foot __ SPECIFIC ELECTRILCAL CONDUCTANCE - CALIB. RATION/ STANDARDIZATION T'E,',,~ P-P I INSTRUMENT READING t I I SAMPLED/,.T: FT. Fli'.~AL DEPTH 'FO WATER: FT. 3 CASING VOLUMES= GALS. INOTES: Gr:,und',vater S ...... ,o,o: En'.,'ir:nmental C.r', .......... AND V','ELL 'DEVELOP;,'IENT DATA 5300 W$odmere Dr., Sui',e 105 8akers;ie:d, CA, 93313 SAMPLE ID OR WELL NO.: ~"~.v/~ ITS DEPTH TO V'/ATER: 60,~-0 ft., PROJECT I".10.: ~ ~ O ! ~ ~{. O 3 TOTAL DEPTH OF WELL: -'~.~O -fr PROJECT NAME: ~v~ 0',- F/Ot 5 'F WELL DIAMETER: DATE: O2/2("t/O3 CAShNG VOLU;,,!E: "~, t I ga!:ons SAMPLED BY: ~ \-iff/ ~t,/ METHOD OF'PURGhNG: ~,.,'L PURGE CHARACTERISTICS TEMP pH SEC SA,MPLE REMARKS TIME INTAKE RATE CUM. VOL WELL VOL (F*) (UNITS) (:.tmhos/ CONTROL DEPTH (GPM) (GAL) PUMPED cra) NO. (COLOR, TURSIDI ~'PF, FTC.)..__.._ / J,=FER SOLUTION pH 4.01 I f.' I 7.0 I pH 10.0 V,'e!l Capa:;b': 2' - 0.1632 cjallorv'line-"r --h' ] t 4" - 0.6528 ga!ion/linear foot TRUME,"iT RE '.Oh"~G ] I 6" - 1.45-35 ga~lOrCinear focq _ ;PECIFIC ELECTRILCAL CONDUCTANCE - CALIBRATION / STAi'qDARDIZATION h'ISTRU,'.IENT READING t I I I SA,MPLEOAT: ~'~ FT. FI2:ALDEPI'HTOWATER: b ~.'~' 0 FT. 3CASINGVOLU:,'.ES= ~'3<~ GALS. I iOTES: Orou.nd',vnte: Scier,:is~s: Enviroamen'.al Co¢.s~:'.a.-,ts ANO WELL DEVELOPMENT DATA 5300 V/codmere Dr., Suite 105 B~kers~e;d, CA 93313 SgMPLE ID OR WELL NO,: ~~ i~ DEPTH TO WATER: II%,oq PROJECT NO.: ~ ~ O I ¢~C O '3 TOTAL DEPTH OF WELL: I I~-~F PROJECT NAME: ~ ¢~ CS ~ T WELL DIAMETER: DATE: O2 2cl/O3 vo ue, : ,si SAMPLED BY: ~ ~-I / ~V METHOD OF PURGING: PURGE CHARACTERISTICS TEMP ~ pH SEC . SAMPLE REMARKS TIME ' INTAKE RATE CUM. VOL WELL VOL (F~) (UNITS) (:.tmhos/ CONTROL DEPTH (GPM) (GAL) PUMPED cra) NO. (COLOR, TURBIDLY, ETC.~ )H CALIBRATIOH / STAHDARDIZEO IFFER SOLUTION pH 4.01 F I 7.0 j pH 10.0 V,'e!I Capa:;b': 2" r 0.1832 gallorv'linear fool --h' j 4' - 0.6523 ga~loWlinear fao[' ~MENT RE ',DING J 6" - 1.4~S3 ga~lo~inear foc~ SPECIFIC ELECTRILCAL CONDUCTAHCE - CALIBRATION / STANDARDIZATIOH I j 718 1413 j 6868 j 58843 I INSTRUMENT READING j J J JJ SAMPLEDAT: ~ ~.~ ~. FP~AL DEpTH TO WATER: ~ ~1 FT. 3CASINGVOLUMES=[-~I GALS. I NOTES: Project Number 1801BK03 July 31. 2003 APPENDIX B First Quarter 2003 Groundwater Analytical Laboratory Report E~C Remediation LLC Appendix B Custody Form Client Name E2C Remediation, LLC 661.831.6906 fax 661.831.6234 Analysis Requested Sample Matrix Project Name: Ntt,_ -.~.,;.~ ~' ~, ~ ~ ~ Aqueous Client Address: 5300 Woodmere Drive, Suite 105, Bakersfield, CA 93313 ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ g ~ Soil Project Manager: '~i~t ~.~s,- ~ ~ ~ < ~ .~g ~' ~ SamPler Name: ~~ ~~ ,~ ~ ~ : : ~ ~ ~ ~ ~ ~ [~ Acidified Sample Date Sample Time Sample.Descripton and Container Type ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ Comments 13oo m~-i 15 ~ o m~. l ~T Turnaround Time Requested: 24 Hour 48 Hour 5-Day Standard Relinquished By: ~_ [~ Date:__z~/O3 Relinquished By: · .,-i.-/ai/Pn~b(imi/torl~i~ ~ ~ ~ ~ ~ ~ ~ ~ ~in~C~d~o~' ~ Client Name E2C Remediation, LLC 661.831.6906 -fax 66i.831 ~6234 Analysis Requested Sample Matrix Project Name: ~ 7 'r ' ~ ~ ~ ~ ~ ~ ~ ~ UOOUS Client Address: 5300 Woodmere Drive, Suite 105, Bakersfield, CA 93313 ~ ~ ~ ~ ~ ~ e Soil Sampler Name: ~ ., ~ ~ ~, ~ ~ ~ ~ ~ ~ ~ Acidified ~ ~- > ~ ~ ~ ~ ~ Gomments Sample Date Sample Time Sample Description and Container Type Relinquished By:p~~, ,~ Date:O~/O.t Relinquished By: Date: [ Received By: ': Date: ~/~ } Received By:' Date: I Halcyon Laboratories, :[nc. Laboratory Report I Certification # 1920 CLIENT EzC Remediation, LLC Project Name: Mr Fast I 5300 Woodmere Drive. Suite 105 Bakersfield. CA 93313 Matrix: Aqueous Sampled by: G. Halcon & R. Velez I TESTS: TPH Gas by EPA 8015M Analysis Date: 2/26 & 3/01/03 Date of Report: 3/20/03 I Units: ug/L Sample #: 4630 4631 4632 4633 4634 4635 4636 Date Sampled: 2/24/2003 2/24/2003 2/24/2003 2/24/2003 2/24/2003 2/24/2003 2/24/2003 DL u~JL Sample Description: Travel Blank MW-3 MW-I MW-8 MW-7 M\\'-12 MW1 I-R TPH Gasoline ND ND 15,600 14,900 1,170 11,700 48,500 50 Surrogate Recovery % 93.9 91.8 97.1 92.1 82.7 110 108 I Sample#'. 4637 4638 4639 4640 4641 4642 4643[ Date Sampled: 2/24/2003 2/24/2003 2/24/2003 .2/24/2003 2/24/2003 2/24/2003 2/24/2003I DL ug/L Sample Description: MW-13 MW-15S MW-18 MW-17S MW-6 M\V-10 MW-9 TPH Gasoline 1,140 ND ND ND 912 1,570 ND 50 Surrogate Recovery % 93.6 107.0 93.9 99.8 86.9 86.3 85.3 Sample #: 4644 4645 4646 4647 4648 Date Sampled: 2/24/2003 2/24/2003 2/24/2003 2/24/2003 2/24/2003 DL ug/L Sample Description: MW-5 MW..4 · MW-2 MW-14 MW-19 TPH Gasoline ND ND ND 1.060 1.620 Surrogate Recovery % 92.5 103 98.0 80.8 87.9 IDL = Detection Limit ND - Non-Detect at given DL NA - Result not a\'ailable I Halcyon Laboratories, Znc. EPA 8260B Laboratory Report Water Sample Results in ug/L Certification # 1920 I CLIENT: EzC Remediation, LLC 5300 Woodmere Drive, Suite 105 I Bakersfield, CA 93313 Project ID · Mr. Fast I Report Date ' 3/26/2003 I sample ID .: 4630frravel Blank · I Analyte Result RL Method Units I 5 Oxygenates t-Butanol (TBA) Tert-Butyl Alcohol ND 2.5 ug/L i Methyl Tert-Butyl Ether (MTBE). ND 0.5 ug/L Diisopropyl Ether (DIPE) ND 0.5 ug/L Ethyl Tert-Butyl Ether (ETBE) ND 0.5 ug/L Tert-Amyl Methyl Ether (TAME) ND 0.5 ug/L I BTEX Components I Benzene ND 0.5 ug/L Toluene ND 0.5 ugfL .. Ethylbenzene ND 0.5 ug/L I m & p Xylenes ND 0~5 ug/L o Xylenes ND ,~0.5 ug/L I ~ Internal Standards Results % Recovery I Benzene, fluoro 50.0 100% Benzene-d'5, Chloro- 50.0 100% i 1,4-Dichlorobenzene-d4 50.0 100% Surrogate Standards I Methane, dibromofluoro- 50.4 101% 1,2-Dichloroethane-d4 59.7 119% Toluene-d8 45.2 90% i p-Bromofluorobenzene (BFB) 54.6 109% Halcyon Laboratories, :Inc. EPA 8260B Laboratory Report' Water Sample Results in uglL Certification # 1920 ~ CLIENT: EzC Remediation, LLC 5300 Woodmere Drive,. Suite .105 · Bakersfield, CA 93313 Project ID · Mr. Fast Report Date · 3/26/2003 Sample ID ' 4631/MW3 I Analyte Result Method RL Units I 5 Oxygenates t-Butanol (TBA) Tert-Butyl Alcohol ND 2.5 ug/L I Methyl Tert-Butyl Ether (MTBE) ND 0.5 ug/L DiisoprOpyl Ether (DIPE) ND 0.5 ug/L Ethyl Tert-Butyl Ether (ETBE)' ND 0.5 ug/L i Tert-Amyl Methyl Ether (TAME) ND 0.5 ug/L BTEX Components I ND 0.5 ug/L Benzene Toluene ND 0.5 ug/L Ethylbenzene ND 0.5 ug/L I m & p Xylenes ND 0.5 ug/L o Xylenes ND ..~ 0.5 ug/L I '" :~ Internal Standards Results % Recovery I Benzene, fluoro 50.0 100% Benzene-dS, chl0ro- 50.0 100% I 1,4-Dichlorobenzene-d4 50.0 100% Surrogate Standards I Methane, dibromofluoro- 50.7 101% 1,2-Dichloroethane-d4 59.3 119% Toluene-d8 45.4 91% 1· p-Bromofluorobenzene (BFB) 54.4 109% Halcyon Laboratories :Inc. EPA 8260B Laboratory Report Water Sample Results in ug/L Certification # 1920 CLIENT: EzC Remediation, LLC 5300 Woodmere Drive, Suite 105 Bakersfield, CA 93313 Project ID · Hr, Fast' Report Date: 3/26/2003 Sample ID: 4632/MWl I Analyte Result Method RL Units I 5 Oxygenates t-Butanol (TBA) Tert-Butyl Alcohol ND 2.5 ug/L I Methyl Ted-Butyl Ether (MTBE) ND 0.5 ug/L Diisopropyl Ether (DIPE) ND 0.5 ug/L Ethyl Tert-Butyl Ether (ETBE) ND 0.5 ug/L i Tert-Amyl Methyl Ether (TAME) ND 0.5 ug/L BTEX Components I Benzene ND 0.5 ug/L Toluene ND 0.5 ug/L Ethylbenzene ND 0.5 Ug/L I m & p Xylenes ND 0.5 ug/L o Xylenes ND - 0.5 ug/L I '~ Internal Standards Results % Recovery I Benzene, fluoro 50.0 100% Benzene-dS, chloro- 50.0 100% I 1,4~Dichlorobenzene,d4 50.0 100% Surrogate Standards I Methane, dibromofluoro- 50.1 100% 1,2-Dichloroethane-d4 60.1 120% Toluene-d8 45.0 90% ,1· p-Bromofluorobenzene (BFB) 55.7 111% Halcyon Laboratories, Inc. EPA 8260B Laboratory Report Water Sample Results in ug/L Certification # 1920 CLIENT:' E2C Remediation, LLC 5300 Woodmere Drive, Suite 105 Bakersfield, CA 93313 Project ID · Mr. Fast Report Date · 3/26/2003 Sample ID · 4633/MW8 I Analyte Result I~lethod RL Units 5 Oxygenates t-Butanol (TBA) Tert-Butyl Alcohol ND 2.5 ug/L Methyl Tert-Butyl Ether.(MTBE) ND 0.5 ug/L DiisoProPyl Ether (DIPE) ND 0.5 ug/L Ethyl Tert-Butyl Ether (ETBE) ND 0.5 ug/L Tert-Amyl Methyl Ether (TAME) ND 0.5 ug/L BIEX Components Benzene ND 0.5 ug/L Toluene ND 0.5 ug/L Ethylbenzene ND 0.5 ug/L m & p Xylenes ND 0.5 ug/L o Xylenes ND ... 0.5 ug/L Internal Standards Results % Recovery Benzene, fluoro 50.0 100% Benzene-d5, chloro- 50.0 100% 1,4-Dichlorobenzene-d4 50.0 100% Surrogate Standards Methane, dibromofluoro- 51.6 103% 1,2-Dichloroethane-d4 60.3 121% Toluene-d8 45.8 92% p-Bromofluorobenzene (BFB) 54.4 109% m Halcyon Laboratories Inc. EPA 8260B Laboratory Report Water Sample Results in ug/L m Certification # 1920 I CLIENT: EzC Remediation, LLC 5300 Woodmere Drive, SUite 105 I Bakersfield, CA 93313 Project ID blt, Fast IReport Date · 3/25/2003 ISample ID · 4634-MW7 Analyte Result Method RL Units I 5 Oxygenates t-Butanol (TBA) Tert-Butyl Alcohol ND 200 u~/L I Methyl Tert-Butyl Ether (MTBE) ND 40 ug/L DiisoPropyl Ether (DIPE) ND 40 ug/L Ethyl Tert-Butyl Ether (ETBE) ND 40 ug/L i Tert-Amyl Methyl Ether (TAME) ND 40 ug/L BTEX Components I Benzene ND 40 ug/L Toluene 170 40 ug/L Ethylbenzene 7300 .40 ug/L I m & p Xylenes 4900 40 ug/L o Xylenes 2300 40 ug/L Internal Standards Results % Recovery Benzene, fluoro 50.0 100% Benzene-d5, chloro- 50.0 100% 1,4-Dichlorobenzene-d4 50.0 100% surrogate Standards Methane, dibromofluoro- 51.3 103% 1,2-Dichloroethane-d4 61.6 123% Toluene-d8 45.0 90% p-Bromofluorobenz~me (BFB) 55.0 110% , I Halcyon Laboratories, :Inc. EPA 8260B Laboratory Report Water Sample Results in ug/L I Certification #.1920 I CLIENT: E2C Remediation, LLC 5300 Woodmere Drive, Suite 105 I Bakersfield, CA 93313 Project ID · I~lr. Fast I RePort Date: 3/25/2003 I Sample ID · 4635/MW12 Result' Method RL Units Analyte 5 Oxygenates t-Butanol (TBA) TeK-Butyl Alcohol ND 200 u~/L Methyl Tert-Butyl Ether (MTBE) ND 40 ug/L Diisopropyl Ether (DIPE) 40 ug/L Ethyl Tert-Butyl Ether (ETBE) ND 40 ug/L Tert-Amyl Methyl Ether (TAME) ND 40 ug/L BTEX Components Benzene' ND 40 u~A. Toluene 408 40 ug/L Ethylbenzene 5500 40 ug/L m & p Xylenes 3700 40 . ug/L o Xy enes 21 oo , 40 ug/L intefflal standards Results % Recovery Benzene, fluoro 50.0 100% Benzene-d5, chloro- 50.0 100% 1,4-Dichlorobenzene-d4 50.0 100% Surrogate Standards Methane, dibromofluoro- 54.9 110% 1,2-Dichloroethane-d4 62.5 125% Toluene-d8 46.9 94% p-Bromofluorobenzene (BFB) 54.9 ! 10% I Halcyon Laboratories, :[nc. EPA 8260B Laboratory RepOrt Water Sample Results in ug/L Certification Ct 1920 CLIENT: EzC Remediation, LLC 5300 Woodmere Drive, Suite 105 Bakersfield, CA 93313 Project ID · I~lr, Fast Report Date · 3/25/2003 'Sample ID · 4636fMWllR I Analyte Result Method RL Units 5 Oxygenates t-Butanol (TBA) Tert-Butyl Alcohol ND 200 ug/L Methyl Tert-Butyl Ether (MTBE) ND 40 ug/L Diisopropyl Ether (DIPE) ND 40 ug/L Ethyl Tert-Butyl Ether (ETBE) ND 40 ug/L Tert-Amyl Methyl Ether (TAME) ND 40 ug/L BTEX Components ND 40 ug/L, Benzene Toluene 25000 40 ug/L Ethylbenzene 4000 .40 ug/L m & p Xylenes 10000 40 ug/L o Xylenes 9500 ... 40 ug/L Internal Standards Results % Recovery Benzene, fluoro 50.0 100% Benzene-dS, chloro- 50.0 100% 1,4-Dichlorobenzene-d4 50.0 100% Surrogate Standards dibromofluoro- 53.8 ' . 108% Methane, 1,2-Dichloroethane-d4 62.2 124% Toluene-d8 '46.2 92% p-Bromofluorobenzene (BFB) 55.7 1!1% I .Halcyon Laboratories~ ]:nc. EPA 8260B Laboratory Report Water Sample Results in ug/L Certification # 1920 CLIENT: E2C Remediation, LLC 5300 Woodmere Drive, Suite 105 Bakersfield, CA 93313 Project ID · Mr. Fast Report Date · 3/25/2003 Sample ID · 4637/MW13 I Analyte Result Method RL Units I 5 Oxygenates t-Butanol (TBA) TeK-Butyl Alcohol ND 200 ug/L I Methyl Tert-Butyl Ether (MTBE) ND 40 u~L Diisopropyl Ether (DIPE) ND 40 ug/L Ethyl Tert-Butyl Ether (ETBE) ND 40 ug/L I Tert-Amyl Methyl Ether (TAME) ND 40 ug/L BTEX Components I Benzene 1200 40 u~L Toluene 4200 40 ug/L " i Ethylbenzene . 6800 40 uo~L m & p Xylenes ?000 40 ug/L o Xylenes 6500 ' 40 u~L I ' I ' Internal Standards Results % Recovery Benzene, fluoro 5010 100% Benzene-dS, chloro- 50.0 100% I 1,4-Dichlorobenzene-d4 50.0 100% Surrogate Standards' I Methane, dibromofluoro- 55.3 111% 1,2-Dichloroethane-d4 61.0 122% Toluene-d8 48.3 97% I p~,Bromofluorobenzene (BFB) 59.9 120% I Halcyon Laboratories :[nc. EPA 8260B Laboratory Report Water Sample Results in ug/L Certification # 1920 CLIENT: E2C Remediation, LLC 5300 Woodmere Drive, Suite 105 Bakersfield, CA 93313 Project ID: Mr. Fast Report Date · 3/26/2003 Sample ID · 4638/MW15-S Result Method RL Units Analyte 5 Oxygenates t-Butanol (TBA) Tert-Butyl Alcohol ND 2.5 ug/L Methyl Tert-Butyl Ether (MTBE) ND 0.5 ug/L Diisopropyl Ether (DIPE) ND 0.5 us/L Ethyl Tert-Butyl Ether (ETBE) ND 0.5 ug/L Tert-Amyl Methyl Ether (TAME) ND 0.5 ug/L BTEX Components Benzene ND 0.5 ug/L Toluene ND 0.5 ug/L Ethylbenzene ND 0.5 ug/L m & p Xylenes ND 0.5 us/L o Xylenes ND 0.5 ug/L I ~.'~ Internal Standards · Results % Recovery I Benzene, fluoro 50.0 100% Benzene-d5, chloro- 50.0 100% I 1,4-Dichlorobenzene-d4 50.0 ~.00% Surrogate Standards I Methane, dibromofluoro-. 53.6 107% 1,2-Dichloroethane-d4 61.5 123% Toluene.d8- 44.7 89% I p-Bromofluorobenzene (BFB) 54.7 109% HalcyOn LabOratories Tnc. EPA 8260B Laboratory Report Water Sample Results in ug/L Certification # 1920 CLIENT: E2C Remediation, LLC 5300 Woodmere Drive, Suite 105 Bakersfield, CA 93313 Project ID: I~lr. Fast Report Date · 3/13/2003 Sample ID: 4639/MW-18 Analyte Result Method RL Units 5 Oxygenates t-Butanol (TBA) Tert-Butyl Alcohol ND 2.5 ug/L Methyl Tert-Butyl Ether (MTBE) ND 0.5 ug/L Diisopropyl Ether (DIPE) ND ' 0.5. ug/L Ethyl Tert-Butyl Ether (ETBE) ND 0.5 ug/L Tert-Amyl Methyl Ether (TAME) ND 0.5 ug/L BTEX Components 0.5. ug/L Benzene ND Toluene ND 0.5 ug/L Ethylbenzene ND 0.5 ' ug/L m& p Xylenes ND 0.5 ug/L o Xy!eneS ND . 0.5 ug/L Internal Standards Results % Recovery Benzene, fluoro · 50.0 100% Benzene-dS, chloro- 50.0 100% 1,4-Dichlorobenzene-d4 50.0 100% Surrogate Standards Methane, dibromofluoro- 41.8 84% 1,2-Dichloroethane-d4 54.3 109% Toluene-d8 46.2 92% p-Bromofluorobenzene (BFB) 49.6 99% Halcyon Laboratories, Inc. EPA 8260B Laboratory Report Water Sample Results in ug/L Certification # 1920 CLIENT: E2C Remediation, LLC 5300 Woodmere Drive, Suite 105 Bakersfield, CA 93313 Project ID: Mr. Fast Report Date · 3/26/2003 Sample ID: 4640/MW17-S AnalYte Result Method RL Units 5 Oxygenates t-Butanol (TBA) Tert-Butyl Alcohol ND 2.5 ug/L Methyl Ted-Butyl Ether (MTBE) ND 0.5 ug/L Diisopropyl Ether (DIPE) ND 0.5 ug/L Ethyl Tert-Butyl Ether (ETBE) ND 0.5 ug/L Tert-Amyl Methyl Ether (TAME) ND 0.5 ug/L BTEX Components Benzene ND 0.5 ug/L Toluene ND 0.5 ug/L Ethylbenzene ND 0.5 ug/L m & p Xylenes ND 0.5 ug/L o Xylenes ND .. 0.5 ug/L Internal Standards Results % Recovery Benzene, fluoro 50.0 100% Benzene-d5, chloro- 50.0 100% 1,4-Dichlorobenzene-d4 50.0 100% Surrogate Standards Methane, dibromofluoro- 50.0 100% 1,2-Dichloroethane~d4 60.4 121% Toluene-d8 44.9 90% p~Bromofluorobenzene (BFB) 52.4 105% Halcyon Laboratories :Inc.' EPA 8260B Laboratory Report Water Sample Results in ug/L Certification # 1920 I EzC Remediation, LLc . CLIENT: 5300 Woodmere Drive, Suite 105 I Bakersfield, CA 93313 Project ID · Mr. Fast I Report Date · 3/26/2003 I Sample ID · 4641/MW6 Result Method RL Units Analyte 5 Oxygenates t-Butanol (TBA) Tert-Butyl Alcohol ND 2.5 ug/L Methyl Tert-Butyl Ether (MTBE) ND 0.5 ug/L Diisopropyl Ether (DIPE) ND 0.5 ugFb Ethyl Tert-Butyl Ether (ETBE) ND 0.5 ug/L Ted-Amy! MethYl Ether (TAME) ND 0.5 ug/L BTEX Components Benzene ND ' 0.5 ug/L Toluene ND 0.5 ug/L Ethylbenzene ND 0.5 ug/L m & p Xylenes 'ND 0.5 ug/L o Xylenes ND . 0.5 ug/L Internal Standards Results % Recovery Benzene, fluoro 50.0 100% Benzene-dS, chloro- 50.0 100% 1,4-Dichlo¢obenzene-d4 50.0 100% Surrogate Standards Methane, dibromofluoro- 51.4 103% 1,2-Dichloroethane-d4 59.5 119% Toluene-d8 44.0 88% p-Bromofluorobenzene (BFB) 5'1.5 103% I ~ 'Halcyon Laboratories, :Inc. EPA 8260B Laboratory Report Water Sample Results in ug/L I Certification # 1920 I CLIENT: EzC Remediation, LLC 5300 Woodraere Drive, Suite 105 i Bakersfield, CA 93313 Project ID' I~lr. Fast I Report Date · 3/26/2003 Sample ID · 4642/MW10 I I Analyte Result Method RL Units " 5 Oxygenates I t-Butanol (TBA) Tert-Butyl Alcohol ND 2.5 ug/L Methyl Tert-Butyl Ether (MTBE) ND 0.5 ug/L I Diisopropyl Ether (DIPE) ND 0.5 ug/L Ethyl Tert-Butyl Ether (ETBE)' ND 0.5 ug/L Tert-Amyl Methyl Ether (TAME) ND 0.5 ug/L I BTEX Components i Benzene ND 0.5 ug/L Toluene ND 0.5 ug/L Ethylbenzene ND 0.5 ug/L m & p Xylenes ND 0.5 ug/L I o Xylenes ND . 0.5 ug/L I Internal Standards Results % Recovery I Benzene, fluoro 50,0 ' 100% Benzene-dS,.chloro- 50~0 100% 1,4-Dichlorobenzene-d4 50.0 100% · I Surrogate Standards Methane, dibromofluoro~ 53.4 107% I 1,2-Dichloroethane-d4 59.2 118% Toluene-d8 45.5 91% p-Bromofluorobenzene (BFB) 54.4 109% I I I EPA 8260B Laboratory Report Water Sample Results in ug/L I Certification # 1920 i CLIENT: EzC Remediation, LLC 5300 Woodmere Drive, Suite 105 'Bakersfield, CA 93313 I Project ID ' Mr. Fast I Report Date · 3/13/2003 Sample ID: 4643/MW-9 1 i Analyte Result Method RL Units 5 Oxygenates I t-Butanol CTBA) Ted-Butyl Alcohol ND 2.5 ug/L Methyl Ted-Butyl Ether (MTBE) ND 0.5 ug/L i Diisopropyl Ether (DIPE) ND 0.5 ug/L Ethyl Ted-Butyl Ether (ETBE) ND 0.5 ug/L Ted-Amyl Methyl Ether (TAME) ND 0.5 ug/L I BTEX CompOnents Benzene ND 0.5 ug/L I ToJuene ND 0.5 ug/L Ethylbenzene ND 0.5 ug/L m & p Xylenes ND 0.5 ug/L i o Xylenes ND 0.5 ug/L Internal Standards Results % Recovery Benzene, fluoro 50.0 100% Benzene-d5, chloro- 50.0 100% 1,4-Dichlorobenzene-d4 50.0 100% Surrogate Standards Methane, dibromofluoro- 42.6 85% 1,2-Dichloroethane-d4 53.8 108% Toluene-d8 46.2 92% p-Bromofluorobenzene (BFB) 50.2 100% Halcyon Laboratories, Inc. EPA 8260B Laboratory Report Water Sample Results in ug/L certification # 1920 I CLIENT: EzC Remediation, LLC 5300 Woodmere Drive, Suite 105 I Bakersfield, CA 93313 Project ID' Mr. Fast I Report Date ' 3/13/2003 ISamPle ID · 4644/MW-5 Result Method RL Units Analyte 5 Oxygenates t-Butanol (TBA) Tert-Butyl Alcohol ND 2.5 ug/L Methyl Tert-Butyl Ether (MTB'E) ND 0.5 ug/L Diisopropyl Ether (DIPE) 0.5 ug/L Ethyl Tert-Butyl Ether (ETBE) ND 0.5 ug/L Tert-Amyl Methyl Ether (TAME) ND 0.5 ug/L BTEX Components Benzene ND 0.5 ug/L Toluene ND 0.5 ug/L Ethylbenzene ND 0.5 ug/L m & p Xylenes ND 0.5 ug/L o Xylenes ND .. ' 0.5 ug/L Internal Standards I~esul~ % Recovery Benzene, fluoro 50.0 100% Benzene-d5, chloro- 50,0 100% :l,4-Dichlorobenzene-d4 50,0 100% Surrogate Standards Methane, dibromofluoro- 40.0 80% 1,2-Dichloroethane-d4 49.5 99% Toluene-d8 51.6 103% p-Bromofluorobenzene (BFB) 40.7 81% Halcyon Laboratories, Inc. EPA 8260B Laboratory Report Water Sample Results in ug/L Certification # 1920 CLIENT: E2C Remediation, LLC 5300 Woodmere Drive,. Suite 105 Bakersfield, CA }3313 Project ID · Mr. Fast Report Date · 3/13/2003 Sample ID · 4645/MW-4 I Analyte Result Method RL Units 5 Oxygenates t-Butanol (TBA) Tert-Butyl Alcohol ND 2.5 u~L Methyl Tert-Butyl Ether (MTBE) ND 0.5 ug/L Diisopropyl Ether (DIPE) ND 0.5 ug/L Ethyl Tert-Butyl Ether (ETBE) ND 0.5 ug/L Tert-Amyl Methyl Ether (TAME) ND 0.5 ug/L · BTEX Components ND 0.5 ug/L Benzene Toluene ND 0.5 ug/L Ethylbenzene ND 0.5 ug/L m & p Xylenes ND 0.5 ug/L 0 Xylenes ND 0.5 ug/L Internal Standards Results % Recovery Benzene, fluoro 50.0 100% Benzene-dS, chloro- 50/0 100% 1,4-Dichlorobenzene-d4 50.0 i00% Surrogate Standards dibromofluoro- 42.1 84% Methane, 1,2-Dichloroethane-d4 56.1 112% Toluene-d8 46.0 92% p-Bromofluoiobenzene (BFB) 50.3 101% I Halcyon Laboratoriest :Inc. EPA 8260B Laboratory .Report Water Sample Results in ug/L Certification # 1920 CLIENT: EzC Remediation, LLC 5300 Woodmere Drive, Suite 105 Bakersfield, CA 93313 Project ID · Mr. Fast Report Date · 3/13/2003 Sample ID · 4646fMW2 I Analyte Result Method RL Units I 5 Oxygenates t-Butanol (TBA) Tert-Butyl Alcohol ND 2.5 ug/L I Methyl Tert-Butyl Ether (MTBE) ND 0.5 ug/L Diisopropyl Ether (DIPE) ND 0.5 ug/L Ethyl Tert-Butyl Ether (ETBE) ND 0.5 ug/L i Tert-Amyl Methyl Ether (TAME) ND 0.5 ug/L BTEX Components I ND 0.5 ug/L Benzene Toluene ND 0.5 ug/L Ethylbenzene ND 0.5 ug/L I m & p Xylenes ND 0.5 ug/L o Xylenes ND 0.5 ug/L I ?~ Internal ~andards Results O/o Recovery I Benzene, fluoro 50.0 100% Benzene-dS, chloro- 50.0 100% I 1,4-Dichlorobenzene-d4 50.0 100% Surrogate Standards I Methane, dibromofluoro- 38.2 76% 1,2-'Dichloroethane-d4 49.0 98% Toluene-d8 51.4 103% I . p-Bromofluorobenzene (BFB) 40.7 81% Halcyon Laboratories, ]:nc. EPA 8260B Laboratory Report Water Sample Results in ug/L Certification Ct 1920 CLIENT: E:C Remediation, LLC 5300 Woodmere Drive, Suite 105 Bakersfield, CA 93313 Project ID: blr. Fast Report Date · 3/13/2003 Sample ID: 4647/MW-14 I Analyte Result Method RL Units I 5 OXygenates t-Butanol (TBA) Tert-Butyl Alcohol ND 2.5 ug/L i Methyl Tert-Butyl Ether (MTBE) ND 0.5 ug/L Diisopropyl Ether (DIPE) ND 0.5 ug/L Ethyl Tert-Butyl Ether (ETBE) ND 0.5 uB/L Tert-Amyl Methyl Ether (TAME) ND 0.5 ug/L I · BTEX Components I Benzene 7.0 0.5 .ug/L Toluene 6.2 0.5 ug/L Ethylbenzene ND .0.5 ug/L I m & p Xylenes 5.6 0.5 ug/L o Xylenes 5.1 0.5 ug/L Internal Standards Results % Recovery Benzene, fluoro 50.0 100% Benzene-d5, chloro- 50.0 100% 1,4-Dichlorobenzene-d4 50.0 100% .Surrogate Standards Methane, dibromofluoro- 41.6 83% T,2-Dichloroethane-d4 54.4 109% Toluene-d8 46.7 93% p-Bromofluorobenzene (BFB) 52.5 105% I Halcyon Laboratories :Inc. EPA 8260BLaboratory Report Water Sample Results in ug/L I. Certification # 1920 I CLIENT: EzC Remediation, LLC 5300 Woodmere Drive, Suite 105 I Bakersfield, CA 93313 Project ID: Mr. Fast IReport Date · 3/13/2003 ISample ID: 4648/MW-19 I Analyte Result Method RL UnitS I 5 Oxygenates t-Butanol (TBA) Ted-Butyl Alcohol ND 2.5 ug/L I Methyl Tert-Butyl Ether (MTBE) ND 0.5 ug/L Diisopropyl Ethe~ (DIPE) ND 0.5 ug/L Ethyl Ted-Butyl Ether (ETBE) ND 0.5 ug/L i Tert-Amyl Methyl Ether (TAME) ND 0.5 ug/L BTEX Components I Benzene 24.8 0.5 ug/L Toluene · 27.5 0.5 ug/L Ethylbenzene 11.8 0.5 ug/L I m & p Xylenes 20.8 0.5 ug/L o Xylenes 17.3 0.5 ug/L ~! Standards Results % Recovery Benzene, fluoro 50.0 100% Benzene-d5, chloro- 50.0 100% 1,4-Dichlorobenzene-d4 50.0 100% Surrogate Standards Methane, dibromofluoro- 40.4 .81% 1,2-Dichloroethane-d4 58,1 116% Toluene-d8 45.9 92% p-Bromofluorobenzene (BFB) 55.0 110% September 5, 2001 John Whiting Associate Engineering Geologist California Regional Water Quality Control Board Central Valley Region 3614 Ashlan Avenue Fresno; CA'93726 RE: Request for Extension for Submittal Of Report of Findings and Second Quarter 2001 GWM Report Underground Storage Tank Release, Mr. Fast Service Station, 600 Brundage Lane, Bakersfield, Kern County Dear Mr. Whiting: Pursuant to-our.conversation today, September 5, 2001, E2C Remediation, LLC (E2C) (formerly ..*~" ~.. :,i :i,. E~¥,,.In:~::-~,' ;~ame ;.~:h'ang'e' ~'.ffecti~: ';~u.g'ust .::1.;,. ;2001 ) respectfully requests an extension for "',':"-.": ..... i:sdbmittal of the Additional Groundwater Characterization..and..SVE/AS Pilot Test' Report of ':?' '" '" ';' ~in¢i~'gs'and ~Second Quarter 2001 Groundwater Monitofii~l':R'~i~'$:~? ~'7: . ... . ..... .(;:;:~:,- ' . _.~.:-; ,:':" "~° -;: :. . .... '~ . .!'-'?:' ' ,' .:".'..,.., :.:.?:-::~ _;:,¢.,~.:~. .... ,-.... " .... ks :disb~s'seG,.'b~e'~l"~)r~ an" evaluation of the dat~.' '~:bllected during ,t'he ~ecen{. in~,estigatiofis; installation of 'one on-site remedial system does not appear viable and that two systems are required, one on-site'and one off-site. The Workplan for the installation of the two systems will be included in the Report. The report revisions (change from one remedial system to two systems) are in final preparation with subsequent report review. The report and should be completed by Monday, Septernbei' 10 for a submittal date ..of. Sep. tember[ 11. . If you have any questions regarding this request, do not hesitate to call Bill Lawson or Phil Goalwin at (661) 831-6906. 779 ~,~¢¢~ ,.::.i.::': .... ' "" '"" 1 7'. .... '~" ':, :~..~2~:~ '¢ Senior Hydro eologist ~~..-'Mr.&MrS~KfChuuYi, Mr'?F~stSerVice:Stati0n[.?....3.:.) ¥:..?.j:;:r.'....,; . '. :i¢',..:~h~ .....~ *..:'..~:;;:3'~.:73!.; :.,% ~*': .... :Ho'~a~:d wine:..4,:':Cit~"bf'B~kersfi~ld Fire Department ............................. - · z EzC REPIEDIATION, LLC I ENVIRONMENTAL/ ENGINEERING CONSULTANTS S i n c e l 9 7 0 '- 5300 Woodmere Drive,, Suite 105, Bakersfield, CA 93313 Tel: 661.831.6906 Fax: 661.831.6234 Toll Free: 800.339.4952 · Corporate Office: 382 Martin Avenue, Santa Clara, CA 95050 Tel: 408.327.5700 Fax: 4_08.327.5707 Email: E2C.Remediation. LkC@sbcglobal.net I I I I I I I I I I '~, 7" ': ",,/ I E~C REMEDIATION, LLC ENVIRONMENTAL/ ENGINEERING CONSULTANTS REPORT OF FINDINGS FOR ADDITIONAL SITE CHARACTERIZATION & SVE/AS PILOT TESTING SECOND QUARTER 2001 GWM REPORT REVISED REMEDIAL ACTION PLAN (INCLUDES WORKPLAN FOR ADDITIONAL GROUNDWATER CHARACTERIZATION) MR. FAST sERVICE STATION 600 Brundage Lane Bakersfield, California August 15, 2001 Prepared For: Mr. & Mrs. Ki Chu Yi 600 Brundage Lane Bakersfield, California Prepared By: E2C Remediation, LLC 5300 Woodmere Drive, Suite 105 Bakersfield, California 93313 Project Number 1801BK04 'Mr. &~j~rs. Ki..¢hu Yi, · _Mr..F,.ast Se~ice Station · ~00(~rundg§e Lane Ba~ersfi~.ld, CA 93304 I Subjeqti' 1) Report of Findings for Additional Groundwater Characterization '" / & SVE/AS Pilot Test ,// ,.i 2) ~'Second Quarter 2001 Groundwater Monitoring Report I /' 3) Revised RAP (includes Workplan for Additional Groundwater '. Characterization) I / Mr. Fast Service Station _ ,,/ 600 Brundage Lane / ,' Bakersfield, California I / Dear Mr. & Mrs. Yi: E2C Remediation, LLC (formerly E2C, Inc., name change effective August 1, 2001) (E~C) has completed additional groundwater characterization as proposed in the January 24, 2001 Fourth I/ Quarter 2000 Groundwater Monitoring Report & Remedial Action Plan at the property identified as the Mr. Fast Service Station at 600 Brundage Lane (Site), Bakersfield, California· This report · documents the work performed and the results/ In addition, the Second Quarter 2001 quarterly I monitoring has been performed and those results are dOcumented in this report. / · After approval by the State of California'Regional Water Quality Control Board - Central Valley Region (RWQCB), the piping and Manifolding for performing an SVE/AS Pilot Test was installed I and the Pilot Test was performed. The results of that testing are also included and have been used tO prepare a Revised Remedial Action Plan (RAP), which is also included. Finally, based on the results of. the additional groundwater characterization, the limits of the groundwater plume remain undefined, specifically in the groundwater downgradient direction. As such, a Workplan for additional groundwater characterization is also included. ! E2C REt,tEDIATION, LLC ENVIRONPIENTAL / ENGINEERING CONSULTANTS S i n c e I 9 7 0 5300 Woodmere Drive,, Suite 105, Bakersfield, CA 93313 Tel: 661.831.6906 Fax: 661.831.6234 Toll Free: 800.339.4952 · . Corporate Office: 382 Martin Avenue, Santa Clara, CA 95050 Tel: 408.327.5700 Fax: 408.327.5707 Email: E2C.Remediation. LLC@sbcglobal.net It is a pleasure tO be of service to you, should you have any questions regarding this submittal, ~hesitate t0 call the undersigned at 661'831'6906' ' ' :.~Ilys0bmitted, No. 7~i CC: John Whiting Associate Engineering Geologist California Regional Water Quality Control Board Central ValleY Region 3614 Ashlan Avenue Fresno,'CA 93726 Mr. Howard Wines Hazardous Materials Division .City of Bakersfield Fire Depadment 1715 Chester Avenue I I I prc_iect Number 1801BK04 August 151 2001 TABLE OF CONTENTS I TABLE OF CONTENTS ............................................' .................................................... LIST OF FIGURES ........................................................................ ' .........· ............. v LIST OF TABLES ........................................................................................................................ v I LIST OF APPENDICES ............................................................................................ : .................. v EXECUTIVE SUMMARY ............................................................................................................. 1 I Recommendations .................................................................................................................. 1 1.0 INTRODUCTION ........................................................................... 1.1 Site Description ........................................................................................................ '1 1.2 Regional and Site Geology and Hydrogeology ............................................................... 2 1.2.1 Regional Geology ................................................................................................... 2 I 1.2.2 Regional Hydrogeology .......................................................................................... 3 2.0 SITE HISTORY ............................................................................................................... 3 2.1 Initial Site Assessment ............................. ~ .................................................................... 3 I 2.2 Preliminary Site Assessment - Limited Soil Sampling - February 1992 ..~ ....................... 3 2.3 Tank Tightness Testing - June 1993 .............................................................................. 4 I 2.4 Site Assessment - July 1993 ......................................................................................... 4 '2.5 UST Permitting - December 1993 to July 1994 .......................................................... i...5 2.6 Additional Soil and Groundwater Characterization - July 1995 ....................................... 5 I 2.6.1 Drilling Operations .................................................................................................. 5 2.6.2 Well MW-1 Construction Details .................................. ........................... 5 I 2.6.3 Soil Analytical Results ............................................................................................ 5 2.6.4 Groundwater Analytical Results .............................................................................. 6 2,7 Rem°val of Old USTs and Installation of New UST ........................................................ 6 I 2.8 Groundwater Assessment Workplan - February 1996 ................................................... 6 2.9 Site Assessment Work - April 1996 ............. : ............................................................... I 2.9.1 Well Installations ............................................................. ........................................ 7 2.9.2 Soil Sample Analytical Results ......................... ' .................... 7 2.9.3 Groundwater Analytical Results ............................................................................... 7 I 2.9.4 RWQCB Review of AEC 1996b Report .......................................................... 8 2,9.5 Groundwater Assessment Workplan - October 1996 .............................................. 8 I 2.9.6 RWQCB Review of the AEC October 1996 (11/6/967)Workplan ....................... . ...... 8 2.10 Additional Groundwater Plume Assessment- March 1997 .......... ~ ............................ 8 2.10.1 Well Installations ............................................. . .............................................. :' I 2.10.2 Groundwater Elevations .................................................................................... 9 2.10.3 Soil Sample Analytical Results ........................................................................... ..9 9 I 2.1014 Groundwater Analytical Results .......................................................................... 2.10.5 Site Assessment Report-April 1997 .................................................................. 9 2.10.6 RWQCB Review of AEC April 1997 Report ....................................................... 10 '1 i - E2C Remediation, LLC . I ' Project Number 1801BK04 AF_~ust 15. 2001 2.11 AEC Workplans - May 1998 .............................................. ...................................... 10 2.12 Quarterly Groundwater Monitoring and Sampling ............................... ~ ..................... 10 2.12.1 RWQCB Review of Second Quarter 1999 Groundwater Monitoring Report ........ 11 2.13 Free-Product Removal ............................................................................................. 11 2.14 Soil Remedial System Installation and Operation - April to August 1999 ................. 12 2.15 RWQCB Review of 10/99 QMR & Additional GW Assessment Workplan .................. 12 2.16 Revised Additional Groundwater Assessment Workplan - February 2000 ................ 13 2.17 RWQCB Review of Revised Additional GW Assessment Workplan .......................... 13 2.18 Additional Site Assessment Work - April 2000 ......................................................... 13 2.19 Groundwater Monitoring Well Installations - June 2000 ............................................ 13. 2.19.1 Boring MW-8 Analytical Results for Soil Samples .............................................. 13 2.19.2 Boring MW-11 Analytical Results for Soil Samples ............................................ 14 2.19.3 Third Quarter 2000 Groundwater Monitoring and Sampling ............................... 14 2.20 July 2000 Groundwater Elevations ........................................................................... 14 2.21 RWQCB Response - 11/17/00 ................................................................................ 14 2.22 RWQCB Response - 11/29/00 ............................................................ ' 15 2.23 Additional Assessment Work - January 2001 ........................................................... 15 2.23.1 Surrounding Area Water Well Survey ................................................................ 16 2.23.2 Well ID# 35-02 (CWS) .......................................... ~ ................................. 16 2.23.3 Well ID# 36-02 (CWS) ...................................................................................... 16 2.23.4 Well ID# 159-01 (CWS) .................................................................................... 16 2.23.5 Well 30/28-6 (SDWR) ...................................... ................................... ' 16 2.23.6 Existing Well Inspection .................................................................................... 16 2.23.7 Survey Wells .................................................................................................... 17 2.24 Fourth Quarter Groundwater Monitoring and Remedial Action Plan .......................... 17 2.24.1 RWQCB Remedial Action Plan Response - February 26, 2001 ......................... 17 2.25 First Quarter 2001 Groundwater Monitoring ............................................................. 17 2.25.1 Groundwater Elevations .................................................................................... 18 2.25.2 Groundwater Analytical Results ........................................................................ 18 2.25.3 Conclusions ...................................................................................................... 18 2.25.4 Recommendations ~ .............................. 19 2.26 Regulatory Compliance .................................... ~ ....................................................... 19 2.27 Request to Start Off-Site Remediation ...................................................................... 20 3.0 REPORT OF FINDINGS - ADDITIONAL SITE CHARACTERIZATION ............................ 20 .20 3.1 Soil Borings and Soil Sampling ..................... : ............................................................. 3.1.1 Analytical .......................................................................................... Soil Results 21 3.2 Well Installations ......................................................................................................... 21 3.2.1 Shallow Groundwater Monitoring Wells .................... · ............................ 21 3.2.2 Deep Groundwater Monitoring Well MW-14 .......................................................... 22 3.2.3 Installation of AS Wells ......................................................................................... 22 E~C Remediation, LLC .. Number 1801BK04 August 15. 2001 ' Project 3;2.3 Installation of Well VE-3 22 3.3 Subsurface Stratigraphy and Hydrogeology ................................................................. 23 4.0 REPORT OF FINDINGS OF SVE/AS PILOT TEST ......................................................... 23 4.1 ~ Air. Sparge Observations ............................................................................................. 23 411.1 Dissolved Oxygen Observations .................... ~ ...................................................... 24 4.1',.2 Air Sparge Test Conclusions ' . ........................................... 24 4.2 ~ SVE Observations ..................................... · .................................................................. 25 412'.1 Radius of Influence .............................................................................................. 25 4.2.2 Removal Rates .................................................................................................... 26 5.0 SECOND QUARTER 2001 GROUNDWATER MONITORING ......................................... 26 5.1 Groundwater' Elevations .............................................................................................. 26 5.2 Monitoring Well Purging and Sampling 27' 5.3 Groundwater LaboratorY AnalYses ................ . ............................................................... 27 5.4 Groundwater Analytical Results...' ............... ................. 27 5.5 Conclusions ................................................................................................................ 27 5.6 Recommendations ...................................................................................................... 28 6.0 REVISED REMEDIAL ACTION PLAN .............. ; .............................................................. 29 6.1 Task I- Permitting ................ .............................................. : ....................................... 29 6.2 Task II - Install Off-Site Wells ...................................................................................... 29 6.2.1 Soil Borings and Soil Sampling ............................................................................. 30 6.2.2 Groundwater Monitoring Well Installations ............................................................ 30 6.2.3 Installation of Off-Site Soil Vapor Extraction Wells ................................................ 31 6.2.4 Installation of Groundwater Air Sparging Wells ..................................................... 32 6.2.5 Resurvey of Monitoring Wells ............................................................................... 32 6.3 ~ Task 111 - Install Off-Site Soil and Groundwater Remedial System ................................ 32 6.3.1 Comparison of One Remedial System versus Two Remedial Systems .... ' 33 6.3.2 Cost Comparison of One versus Two Remedial Systems ...................................... 33 6.3.3 Trenching and Piping ........................................................................................... 33 6.3.4 Electrical Supply ................. , ................................................................................. 34 613,5 Remediation Equipment ....................................................................................... 34 6.3.6 ISO.GENTM , .... 35 6.4 Task IV - Operation and Maintenance of Soil and Groundwater Remedial Systems ...... 35 6.5 Task V - Quarterly Monitoring and Sampling ............................................................... 36 6.6 Reporting .................................................................................................................... 36 6.6.1 Report of Findings and Finalized Remedial Action Plan ........................................ 36 6,6.2· Groundwater Monitoring and Remediation Status Reports ..................... 36 Quarterly 7.0 QUALITY ASSURANCE PLAN ................................................................................. ' ...... 37 7.1 Sample Collection and Handling Protocol .................................................................... 37 7.2 Protocol for Sample Identification and Chain-of-Custody Documentation ' ..37 7.3 Analytical Quality Assurance ........................................................................................ 37 E2C Remediation, LLC iii Project Number 1801BK04 August 15. 2001 I 8.0 OFFSITE PROPERTY OWNER PERMISSION ............................................................... 37 9.0 SITE SAFETY PLAN ..38 10.0 LIMITATIONS AND REPORT CERTIFICATION .................................... ~ ..................... 38 11.0 REFERENCES ........................................................................................................... 39 I I. I ! I I I I ,'~ I I I I I I · EeC Remediation, LLC iv I '1 Pr( _iect Number 1801BK04 A~lgust 15. 2001 LIST OF FIGURES Figure I Site Location Map Figure 2 Site Plan Figure 3 Second Quarter 2001 Groundwater Gradient Plot Figure 4 Second Quarter 2001 Benzene Isoconcentration Plot Figure 5 Second Quarter 2001 TPHg Isoconcentration Plot Figure 6 Site Plan with Cross-Section Transects Figure 7 Cross-Section A-A' Figure 8A Proposed SVE and AS Wells with Horizontal Boring Figure 8B Proposed SVE and AS Wells with Two Remedial Systems Figure 9 Proposed Groundwater Monitoring Wells LIST OF TABLES Table I Second Quarter 2001 Groundwater Monitoring Data Table 2 Historical Groundwater Elevation Data Table 3 Historical Groundwater Analytical Results Table 4 Summary of Soil Analytical Results - April 2001 Table 5 Well Distance Matrix Table 6 Remedial System Cost Comparison LIST OF APPENDICES Appendix A July 1993 Site Assessment Plot and Analytical Laboratory Data Sheets Appendix B AEC, 1995 Analytical Data Summary Table Appendix C RWQCB Letter Dated 3 August 1999 Appendix D Boring Logs for Wells MW-8 through MW-11 Appendix E AEC, 2000b Soil Sample Analytical Results - June 2000 Appendix F January 2001 Surveyor's Plot Appendix G Boring Logs for Wells MW-.11R, MW-12 through MW-14 and SVE & AS wells Appendix H Soil Analytical Laboratory Reports - April 2001 Appendix I Second Quarter 2001 Well Purging Data Sheets Appendix J Second Quarter 2001 Analytical Laboratory Data Sheets Appendix K Site Safety Plan Appendix L Air Sparging Dissolved Oxygen and Groundwater Elevation Data Appendix M sVE/AS Observation Field Data Sheets Appendix N SVE Radius of Influence Calculations Appendix O SVE/AS Pilot Test Influent/Effluent Analytical Laboratory Report Appendix P Graph of Friction Losses E~C Remediation, LLC v I Prelect Number 1801BK04 A~lo_ust 15. 2001 EXECUTIVE ~ SUMMARY This report contains the results of the additional groundwater characterization and soil vapor extraction/air sparge (SVE/AS) Pilot Test for the Mr. Fast Service Station at 600 Brundage Lane (Site),TBakersfield, California. In addition, the results of the Second Quarter 2001 groundwater monitoring and sampling event that was performed on June 4, 2001 are presented. This report is presented to comply with the directive of the California Regional Water Quality Control Board - Central Valley Region (RWQCB) dated November 17, 2000 and amended November 29, 2000. This report presents the results of the work activities and includes analytical data, groundwater elevation data, and interpretations of current water quality and groundwater flow direction beneath the Site. The report also includes a review of the project history and a section on geology and hydrogeology. Based on the findings of the additional groundwater characterization and monitoring, the limits- of the dissolved-phase groundwater plume remain undefined in the. downgradient direction. As such, a Workplan to perform additional groundwater assessment is also included. The Pilot Test is discussed in detail and the results are presented. The pilot testing results indicated radii of influence for air sparging at greater than 20 feet and for SVE at greater than 70 'feet.. In addition, a Revised RAP is presented as free-product was measured in one of the new downgradient wells (MW-12) and significant fuel hydrocarbon concentrations were reported in groundwater samples collected from the newly installed off-site monitoring wells. As part of the revised RAP, E2C now proposes installing a separate off-site remedial system. FinallY, a new technology, ISO-GENTM, is proposed to assist in mitigating spread of the dissolved phase groundwater plume inthe downgradient groundwater direction off-site. Recommendations Based on the steepness of the groundwater gradient beneath the Site, the reported significant concentrations of fuel hydrocarbons in the furthermost downgradient off-site monitoring wells, and the relatively thick accumulation of free-product at well MW-12, E2C makes the following recommendations: · Install off-site monitoring wells as discussed in Section 6.0 of this report; · Install on= and off-site remedial systems as discussed in Section 6.0 of this report; Install ISO-GENTM System as discussed in Section 6.0 of this report; · · Operate and maintain remedial systems; · Continue quarterly groundwater monitoring; and · Due to the high concentrations of fuel hydrocarbons reported in new wells MW-13 and MW-14 and the free-product (greater than 5 feet) at well MW-12, perform the above recommendations on a fast-track basis to limit further spread of the dissolved phase and free-product plumes. E2C Remediation, LLC t I I~r~iect Number 1801BK04 August 15. 2001 I 1.0 INTRODUCTION 1.1 i Site' Description I 600 Lane in Bakersfield, California (see Figure 1 for Site The Site is located at Brundage location map). The Site is located in the SW 1/4 of SE 1/4, Sec. 31, T29S, R28E, Diablo Base and Meridian. The present property consists of a rectangular-shaped lot containing one building I the Northeast corner (see Figure 2 for Site Plan). The building is currently'occupied in by a small retail business, Mr. Fast Gas & Liquors. Attached to the west side of the building is a fenced in storage area. Old disPenser islands and new diSpenser islands are located along the I south of the building. edge The property is bordered along its northern .side by 1st Street, along its eastern side by T Street I (on the South side of Brundage T Street becomes Berneta Avenue), along its southern side by Brundage Lane, and along its western side by the Kern Island Canal - Central Branch. IResidential areas, interspersed with light commercial/industrial areas, are located adjacent to the Site. Vista High School is located just North of the Site. Highway 58, an East-West trending four-lane divided freeway is located approximately 450 feet south of the Site. I 1.2 Regional and Site Geology and Hydrogeology 1.2.1 Regional Geology I The property is located in the south central area of the San Joaquin Valley where the Sierra Nevada, Great Valley, and Coastal Range .physiographic provinces meet. The southern end of I the Sierra Nevada Province is composed of a massive block of igneous and metamorphic rock of Mesozoic age and older. This Sierran block, 40 to 100. miles wide and 400 miles long, slopes five to seven degrees beneath the San Joaquin Valley. The Coastal Range province on the I west Consists of tectonically deformed and fractured marine and non-marine sedimentary rocks of Jurassic, Cretaceous, and Tertiary age, which dip eastward beneath the Sand Joaquin Valley'. The Great Valley province is a broad asymmetrical synclinal trough, which is known as I the Sacramento ValleY in the north and the San Joaquin Valley in the south. Beneath the southern San Joaquin Valley floor, the Sierran plutonic and metamorphic rock i block is overlain by consolidated marine rocks of Jurassic and Cretaceous age. These rocks are overlain by continental marine and non-marine sedimentary rocks of Tertiary age, which are comprised of continental deposits of con§olidated to semi-consolidated, fossiliferous sandstone, siltstone, and shale which thicken toward the south and west. The Tertiary rocks, in turn, are I overlain by unconsolidated continental deposits consisting of Pliocene to Holocene river and lake sediments of gravel, sand, silt, and clay. I Surface features of the floor of the San Joaquin Valley consist of dissected uplands, alluvial fans, overflow areas, and lake bottoms. Dissected uplands lie between the mountains and the nearly flat Valley floor and are manifest in Iow-lying hills through which perennial and I features consist of reworked older alluvium. The alluvial fans intermittent streams flow. These are the sites of active stream deposition of san and silts derived from the Sierra Nevada and the dissected uplands. The overflow lands and lake bottoms lie in the central part of the Valley I accumulate in lake and marsh environments. where silt and clay quiet E~C Remediation, LLC z proiect Number 1801BK04 August 15. 2001 1.2.2 Regional Hydrogeology The Central Valley of California is underlain by a broad, thick hydrogeologic unit consisting of soil and rock with varying porOsity and permeability. Physical dimensions are approximately 50 miles wide at the widest point in the Valley, 400 miles long, and as much as 2,000 feet deep. Rechaige to regional aquifers consists of infiltration of seasonal precipitation and percolation of surface waters. The Valley aquifer of greatest storage, highest.quality, and greatest storage, highest quality, and greatest accessibility for domestic and agricultural use consists of the alluvial and lacustrine continental deposits extending to the depths of 1,5000 to 2,000 feet beneath the San Joaquin Valley floor. Lithol(~gic and hydraulic properties of these sediments are largely the prodUct of the sediment source and the depositional environment. These sediments range in size from clays to boulders and include all mixtures between the extremes. Those of the west side of the Valley are derived largely from the Coastal Ranges, which tend to consist of shales and fine sandstones with limited permeability. The east sediments are derived mainly from granitic materials of the Sierra Nevada which are generally coarser and much more permeable. Sediments encountered during the boring procedures at the Mr. Fast and adjoining parcels consisted of alluvial deposits compriSed of fine-to-coarse grained sands containing quartzite and micas. Permeability in these sediments is high. Regionally, the depth to groundwater ranges between 150 and 200 feet below grade, according to the 1995 Water Supply Report published by the Kern County Water Agency in January 1 998. Unconfined groundwater beneath the subject property is significantly shallower than the regional depth, presumably because of the position adjacent to the unlined Kern Island Canal - Central Branch. the in the area is towards the northwest. Measurements In general hydraulic gradient made within shallow onsite and offsite wells over the course of this project have shown that the gradient in the unconfined aquifer beneath the Site has been consistently towards the from the unlined canal. In January 2001, groundwater flow was also southeast, away southeasterly at a gradient of 0.0172 ft/ft (see Section 4.5 below). 2.0 SITE HISTORY 2.1 Initial Site Assessment In 1974, three (3) underground storage (USTs), tanks each 12,000, gallons in capacity, were installed at the Site. Figure 1 depicts locations of the USTs, dispenser lines, and pump islands. 2.2 Preliminary Site Assessment - Limited Soil Sampling - February 1992 In February 1992, as part of a property transfer, a Transfer Environmental Site Assessment (TESA) and limited soil sampling was performed (Grisanti, 1992). Samples were collected from 15 to '17 feet below ground surface (bgs) beneath the tanks and from 3 to 5 feet bgs beneath the dispensers. In all, fifteen (15) locations were sampled. Soil samples were field screened using a portable field instrument. The field screening results indicated that the areas beneath locations B-2, B-8, B-9, and B-10 contained soil gas at detectable concentrations as follows: o B-2 was located at the south edge of T3; the'samples from 5, 10 and 17 feet bgs contained 100, 5,600 and 7,000 parts per million (ppm), respectively, of volatile soil gas; E~C Remediation, LLC 'J Project Number 1801BK04 Auo_ ust 15. 2001 I · B-8 was located at the north edge of the eastern dispenser of the northwest set of dispensers; the samples from 6, 8 10, and 14.5 feet bgs contained 1,200, 1,000, 700, and 300 ppm, respectively, of volatile soil gas; I · B-9 was located at the north edge of the northwest dispenser of the northeast dispenser set'; the samples from 3 and 5 feet bgs contained 2,000 and 800 ppm, respectively, of i volatile Soil gas; and · B-10 was located at the north edge of the northeastern dispenser of the northeastern dispenser set; the samples frOm 2, 4, and 8 feet bgs contained 2,000, 3,000, and 1,000 I ppm, respectively, of volatile soil gas. Soil samples were also analyzed for Total Petroleum Hydrocarbons as gasoline (TPHg) and the I volatile aromatic gasoline constituents of benzene, toluene, ethylbenzene, and total xylenes (BTEX). A few of the samples were reported as containing concentrations of fuel hydrocarbon constituents as follows: I · B-2-17 (Boring B-2 at 17 feet) contained 3,000 mg/Kg TPHg, 36 mg/Kg benzene, 310 mg/Kg of toluene, 83 mg/Kg of ethylbenzene, and 501 mg/Kg of total xylenes; · B-8-6.5 contained 8,000 mg/Kg TPHg and Iow concentrations of BTEX components; and I · B-10-8 contained 67 mg/Kg TPHg and Iow concentrations of BTEX components. 2.3 Tank Tightness Testing - June 1993 I On June 14, 1993, Redwine'Testing Services, Inc. of Bakersfield, California performed tightness testing of the three USTs (T1, T2, and T3) and associated dispenser lines. USTs T1 and T2 tested, tight. The dispenser line for T3 did not test tight. Based on this failed test, site I assessment work was performed. 2.4 Site Assessment - july 1993 I Western Environmental Engineers Company (WEECO) performed site assessment work in July 1993 after one of the underground tank systems failed routine integrity testing (see Section 3.2 I above). This work and the results were reported in a Site Assessment Report (WEECO, 1993). The assessment consisted of advancing nine (9) soil borings (B-1 through B-9) and collecting ' · soil samples for soil gas screening in the field and for chemical analyses at an analytical ' ~ laboratory. The Figure in Appendix A'depicts boring locations. The middle UST on the drawing ~ is T3. 'Soil samples were analyzed by CHEMTEK, Inc. of Santa Fe Springs, California for TPHg and BTEX. Appendix A also contains copies of the Soil Gas data and analytical laboratory data sheets,. i Soil samples contained up to 2,465 parts per'million (ppm) of Total Petroleum Hydrocarbons as gasoline (TPHg) (sample B-2-40), 3.158 ppm of benzene (sample B-2-40), 2.223 ppm of toluene (sample B-2-40), 1.526 ppm of ethylbenzene (sample B-2-40), and 9.476 ppm of ~ · xylenes (total) (BTEX)' (sample B-2-40). Analyses were not preformed for Total Petroleum Hydro(~arbons as diesel (TPHd, methyl tertiary butyl ether (MTBE), fuel oxygenates, and volatile organic compounds (VOCs). Based on this data, the CBFD required further assessment to i adequately define the extent of soil and groundwater contaminant plumes at the Site. On June 9, 1994, WEECO submitted a Workplan for Further Site.Assessment (WEECO, 1994). In that Workplan, they proposed three borings be advanced around the boring B-2 area at T3. ! E~C Remediation, LLC 4 project Number 1801BK04 A~¢ust 15. 2001 No record of the work proposed by WEECO in 1994 was found. It is possible that the work perfOrmed by Advanced Environmental Concepts (AEC)' in July 1995 (see Section 3.5 below) was the work prOposed by WEECO in June 1994 (see Section 3.4 below). 2.5 UST permitting - December 1993 to July 1994 In December 1993, a permit was applied for to remove the three USTs and replace them with two new USTs. The permit was reissued later in 1996 (see Section 3.6 beloW). The JulY 1, 1994 Permit to Operate issued by the CBFD designated UST T3 as unusable and it 'was taken out of service. 2.6 Additional Soil and Groundwater Characterization - July 1995 On July 10, 1995, AEC advanced three (3) soil borings (AB-l, AB-2, and AB-3) at the Site and collected soil samples for chemical analyses. One of the borings (AB-2) was converted into groundwater monitoring well MW-1. The Site Plan in Appendix B depicts boring locations and the well MW-1 location. This site plan was excerpted from AEC, 1995. 2.6.1 Drilling Operations Soil boring AB-1 was drilled at a 20© angle to 45 feet bgs (42.2 feet) to sample beneath.T1. Soil Boring AB-2 was advanced to 53 feet bgs and was converted into groundwater monitoring well MW-1. Groundwater was encountered in AB-2 at approximately 43 feet bgs. Soil boring AB-3 was advanced to 45 feet bgs. Soil samples were collected during drilling operations and the samples were submitted to an analytical laboratory for chemical analyses. Well MW-1 was developed and a groundwater sample was collected and submitted to the analytical laboratory for chemical analyses. 2.6.2 Well MW-1 Construction DetailS This well was constructed to 53 feet bgs in the AB-2 boring.-The screen interval is from 41 to 53 feet bgs and is comprised of 0.010" slot. Filter pack consisting of #600 Monterey sand was emplaced from the bottom to two feet above (39 feet bgs) top of screen. Hydrated bentonite chips were used to form a seal to the surface. The wellhead was encased in a steel traffic box for protection. 2.6.3 Soil Analytical Results Soil samples were generally collected at five-foot intervals. Selected samples were submitted to Associated Laboratories, Inc. (Associated) of Orange, California. The samples were analyzed for TPHg and BTEX using EPA Methods 8015 and 8020, respectively. TPHg and BTEX compounds were reported in soil samples collected at all three borings at maximum concentrations as follows: · Boring AB-1 - TPHg was reported at a maximum concentration of 6,000 mg/Kg in the 25- foot sample; ° Boring AB-2 - Benzene was reported at a maximum concentration of 1.6 mg/Kg in the 40-foot sample; and E2C Remediation, LLC u I Proi_ect Number 1801BK04 AC/gust 15. 2001 I · Boring AB-3 -TPHg was reported a at maximum concentration of 8.0 mg/Kg (2S-foot sample) and benzene was reported at a maximum concentration of 0.15 mg/Kg (25-foot sample)'. I 2.6.4 Groundwater Analytical Results The groundwater sample was submitted to Associated. The sample was analyzed for TPHg I and BTEX using EPA Methods8015 and 8020, respectively. These analytical results are summarized in Table 3 along with historical groundwater analytical data and are summarized following: I detected at concentration of 329 (329,000 parts per billion (ppb)); O TPHg was a ppm · Benzene was detected at a concentration of 4.2 ppm (4,200 ppb); I ° Toluene was detected at a concentration of 113 ppm (113,000 ppb); · Ethylbenzene was not detected at or above the method detection limit of 0.5 ppm; and · Xylenes were detected at a concentration of 40 ppm (40,000 ppb). I for TPHd, MTBE, fuel oxygenates, and VOCs. Note: Analyses were not preformed These results indicated that groundwater beneath the Site had been impacted by fuel I As the CBFD referred the case to the RWQCB. The RWQCB reviewed hydrocarbons. such, the data and issued a letter that required additional assessment work to better evaluate the vertical and lateral extent of the unauthorized fuel release. I The July 1995 work was reported in an Environmental Site Assessment report (AEC, 1995). I 2. 7 Removal of Old USTs and Installation of New UST In May 1996, the permit to remove the old USTs and install a new UST was reissued. During i the last week of May 1996, the old USTs, the associated piping and the old dispensers were removed. The old permit Was approved to install two (2) new USTs. The permit reissue approved installment on one (1) UST. I During the first week in June 1996, a new UST, piping, associated and new dispensers were installed. The new UST installed was a 12,000-gallon Dual Compartment (compartment 1 - 7,000-gallon regular unleaded; compartment 2 - 5,000-gallon premium unleaded), double wall- I contained UST that had passed a 35,000 volt Holiday test. jacketed GS1 746 Secondary On June 6, 1996, the new dispenser lines were tested for tightness and no leaks were found. I 1 the alarms and sensors were tested and no problems were found. On June On June 1 3, 996, 14, 1996, Wegener Construction of Bakersfield, California tested the UST for tightness and no leaks were detected. ! Note: The routine maintenance testing performed on August 24, 2000 showed that all systems were in working order and functioning properly. I 2.8 Groundwater Assessment Workplan - February 1996 In February 1996, AEC submitted a Workplan for groundwater assessment at the Site (AEC, I 1996a). The Workplan presented proposed work to further eValuate the extent of hydrocarbon impacted soils and groundwater at the Site. In order to accomplish this evaluation, three borings were proposed with the collection of soil samples. The three borings would be ! .I1 E~C Remediation, LLC 6 I Pro_iect Number 1801BK04 ' August 15. 2001 converted into groundwater monitoring wells MW-2, MW-3, and MW-4 groundwater and samples would be collected. All samples would be analyzed for TPHg and BTEX compounds. The RWQCB approved the Workplan by 12, (RWQCB, letter dated March 1 996 1 996a) and AEC performed the work in April 1996 (see Section 3.8 below). 2.9 Site Assessment Work- April 1996 On April 8, 1996, AEC advanced three borings at the Site and converted them into groundwater monitoring wells MW-2, MW-3, and MW-4. Figure 2 depicts the well locations. Each of these three borings was advanced to 53 feet bgs with collection of soil samples. Samples from the 40- and 45-foot depths in each boring were chemically analyzed. 2.9.1 Well Installations Wells MW-2, MW-3, and MW-4 were installed in a like manner. The screen interval was from 41 to 53 feet bgs. The slot interval was 0.010". Filter pack sand consisting of #600 Monterey sand was emplaced from the bottom to top tWo feet above the of the screened interval.. Hydrated bentonite chips, were used to seal the well to the surface. Each wellhead was enclosed in a steel traffic box for protection. 2.9.2 Soil Sample Analytical Results All soil samples analyzed were reported as non-detect for TPHg and BTEX compounds at or above their respective method detection limits. 2.9.3 Groundwater Analytical Results Water samples were analyzed for TPHg and BTEX using EPA Methods 8015 and 8020, respectively. The results are summarized following (see Table 3 for summary of historical analytical data): · TPHg and BTEX were non-detect in the water sample from well MW-2; · TPHg was detected at concentrations of 8,600 ppb and 1,800 ppb in the water samples from wells MW-3 and MW-4, respectively; · Benzene was detected at a concentration of 41 ppb in the water sample from well MW-3 while it was non-detect in the water Sample from.well MW-4; · Toluene was detected at a concentration of 42 ppb in ,the water sample from well MW-3 while it was non-detect in the water sample from well MW-4; · Ethylbenzene was detected at doncentrations of 35 ppb and 0.75 ppb in the water samples from wells MW-3 and MW-4, respectively; · Xylenes (total) were detected at concentrations of 3,000 ppb and 260 ppb in the water 'samples from wells MW-3 and MW-4, respectively; and was observed in well MW-1 .' Free-product · Based on the previously collected and this new data, AEC prepared a report detailing the above activities and recommended the following remedial at (AEC, actions the Site 1 996b): · A free-product recovery system be installed to remove free-product at well MW-l; · ' Perform tightness tests on existing USTs and associated piping; ·. Prepare a Remedial Action Plan for impacted soils and groundwater; E~C Remediation, LLC : I Project Number 1801BK04 August 15. 2001 I · Install a soil vapor sparging system impacted extra(~tion/air for remediation of soils and groundwater; and i · Install additional groundwater monitoring wells; 2.9.4 RWQCB Review of AEC 1996b Report The RWQCB reviewed the AEC 1996b report and had the following cOmments in a letter dated I September 27, 1996 (RWQCB', 1996b): · That the canal west of the Site be included on the scaled Site Plan; I · That a Workplan be submitted to Perform additional groundwater characterization to define the plume limits; · That groundwater at the Site be monitored and sampled on a quarterly basis; I · That groundwater samples be analyzed for total lead for two quarters; · That groundwater samples be analyzed for VOCs using EPA Method 601 for two quarters; I · That MTBE be added to the analyte list on a continuing basis at all wells; and · The RWQCB requested that the Workplan should contain maps and/or cross-sections I that depict the lateral and vertical extent of soil and groundwater degradation for aiding in locating and evaluating locations for proposed soil borings and monitoring wells. 2.9.5 Groundwater Assessment Workplan - October 1996 I AEC submitted a Workplan to further define groundwater plume limits in October 1996 (AEC, 1996c). This Workplan proposed the following work: I · Advance three (3) borings to approximately 53 feet bgs and convert them into groundwater monitoring wells MW-5, MW-6, and MW-7; and · Sample groundwater at the wells and have the samples chemically analyzed for TPHg I and BTEX. 2.9.6 RWQcB Review of the AEC October 1996 (11/6/96?) Workplan I A discrepancy appears in the records at this point. The AEC Workplan on file at the CBFD is dated October 1996 (AEC, 1996c), however the RWQCB review was of a Workplan dated November 6, 1996 (RWQCB, 1996c). In any case, the RWQCB approved the recommendation I to install the three (3) additional groundwater monitoring wells and also reemphasized the need for total lead and VOC analyses on groundwater samples for two quarters. i 2.10 Additional Groundwater Plume Assessment - March 1997 On March 19, 1997, AEC advanced three (3) borings with collection of soil samples at the Site. The three borings were converted into groundwater monitoring wells MW-5, MW-6, and MW-7 I (see Figure 2 for locations). The wells were developed and groundwater samples were collected. This work. and the results were reported in the AEC, 1997 document. 2.10.1 Well Installations I The boring for well MW-5 was advanced to 60 feet bgs. Groundwater was encountered at 50 feet bgs. The well was screened from 45 to 60 feet bgs with 0.010" slots. The' filter pack Iconsisted of #600 Monterey sand placed from the bottom to two feet above the screened interval. Hydrated bentonite chips were placed to form a seal to the surface. The wellhead was encased in a steel traffic box for protection. I EeC Remediation, LLC 8 ! prQ. iect Number 1801BK04 " August 15. 2001 The. boring for well MW-6 was advanced to 55 feet bgs. Groundwater was encountered at 45 feet bgs. The Well was screened from 40 to 55 feet bgs with 0.010" slots. The filter pack sand from the bottom to two feet above the screened consisted of #600 Monterey placed interval. Hydrated bentonite chips were placed to form a seal to the surface. The wellhead was encased in a steel traffic box for protection. The boring for well MW~7 was advanced, to 58 feet bgs. Groundwater was encountered at 48 feet bgs. The well was screened from 43 to 58 feet bgs with 0.010" slots. The filter pack consisted of #600 Monterey sand placed from the bottom to two feet above the screened interval. Hydrated bentonite chips were placed to form a seal to the surface. The wellhead was encased in a steel traffic bOx for protection. 2.10.2 Groundwater Elevations Groundwater elevations were determined and a groundwater gradient of 0.034 to the Southeast was calculated (AEC, 1997). 2.10.3 Soil Sample Analytical Results Selected soil samples were submitted to Associated for chemical analyses. Soil samples were non-detect at or above the method detection limits for TPHg and BTEX, except for the 45-foot sample from the boring for well MW-7 which was reported to contain concentrations of TPHg at 3 ppm, toluene at 0.2 ppm, ethylbenzene at 0.1 ppm, and xylenes at 0.7 ppm. 2,10.4 GroundWater Analytical Results Water samples were collected from all seven (7) wells and were analyzed for TPHg and BTEX. Analysis for MTBE was performed on the sample from well MW-1. The results are summarized in Table 3. Findings of significance are summarized following: · TPHg was reported at a maximum concentration of 210,000 ppb (well MW-l); · Benzene was reported at a maximum concentration of 2,400 ppb (well MW-7); · Tol·Uene was reported at a maximum concentration of 27,000 ppb (well MW-l); · · Ethylbenzene was reported at a ppb maximum concentration of 5,000 (well MW-1 ); · Xylenes were reported at a maximum concentration of 30,000 ppb (well MW-l); · MTBE was reported at a concentration of 22,000 ppb at well MW-l; · Well MW-7 is an offsite well located downgradient across Brundage Lane; · Well MW-2, the upgradient well contained Iow concentrations of TPHg (44 ppb) and benzene (1 ppb); and · Wells MW-5 and MW-6, the side-gradient wells, contained Iow concentrations of TPHg (320 and 60 ppb, respectively) and benzene (8.8 and 0.98 ppb, respectively): 2.10.5 Site AsseSsment Report - April 1997 AEC submitted a Site Assessment Report in April 1997 (AEC, 1997) that reported the work and results discussed above in Sections 3.9.1 through 3.9.3. Another date discrepancy was observed in the records. The copy of this report on file with the CBFD is dated April 1997, however the RWQCB letter dated March 3, 1998 (RWQCB, 1998) indicated that this report was dated May 23, 1997. Regardless of the date 'discrepancy, this report' recommended the following: · o That quarterly groundwater monitoring continue; E~C Remediation, LLC 9 I ProjeCt Number 1801BK04 August 15. 2001 I removal start at Well MW-1 and · That free-product ; · That a Corrective Action' Plan (CAP) be prepared and submitted. I 2.10.6 RWQCB Review of AEC April 1997 Report The RWQCB reviewed the AEC April 1997 report and issued the following ·comments'in a letter dated March 3, .1998 (RWQCB, 1998): I · The RWQCB concurred with the recommendation to commence with free-product removal at well MW-1 and that be considered an Interim Remedial Measure (IRM); I · The RWQCB directed that a Workplan describing the free-product removal operations be submitted for review; · That the groundwater plume required further definition and that a Workplan for adding'an · ~ additional groundwater monitoring well south of well MW-7 be submitted for review; and · That a CAP be developed. I 2.11 AEC Workplans - May 1998 AEC submitted a WorkPlan that proposed to install one groundwater monitoring well (MW-8) i south of well MW-7 (AEC, 1998a). AEC also submitted a Workplan to remediate free-product at well MW-1 (AEC, 1998b) and convert well MW-1 into a vapor extraction well, and to convert well MW-3 into an air sparge well. I 2.12 Quarterly Groundwater Monitoring and Sampling IQuarterly groundwater monitoring and sampling commenced in October 1998. Each quarter, groundwater levels were measured and elevations were calculated, free-product was measured in wells, if present, and groundwater samples were collected and chemically analyzed. I Quarterly monitoring data is summarized in Tables 2 (summary of groundwater elevation data) and 3 (summary of historical groundwater analytical data) for each quarter since quarterly i sampling started. . Quarterly groundwater monitoring reports (QMRs) were submitted as follows: I · Fourth Quarter 1998 - Sampled 10/20/98, Reported 1/12/99 (AEC, 1999a); · First Quarter i999- Sampled 1/11/99, Reported 2/3/09 (AEC, 1999b); · Second Quarter 1999 - Sampled 5/12/99, Reported 7/9/99(?) (AEC, 1999c); I 1999 Sampled 8/20/99, Reported October 1999 (AEC, 1999d); · Third Quarter · Fourth Quarter 1999 - Sampled 12/07/99, Reported in AEC, 2000b; I · First Quarter 2000 - Sampled 3/30/00, Reported unknown date; · Second Quarter 2000 - Sampled 7/3/00, Reported in AEC, 2000c; · Third Quarter 2000- Not sampled; I 2000 sampled 01/03/01 by E2C, Reported in E2C, 2001a; and · Fourth Quarter · First Quarter 2001 - Sampled March 2, 2001 by E2C, Reported in E2C, 2001b. I Note: Another date discrepancy was found with the Second Quarter report. 1999 The AEC . report is dated July 9, 1999, however, the August 3, 1999 RWQCB letter (RWQCB, 1999) states i that this Second Quarter report was dated May 24, 1999. E=C Remediation, LLC 10' ,I I Pro_iect Number 1801BK04 August 15. 2001 2.12.1 RWQCB Review of Second Quarter 1999 Groundwater Monitoring Report The RWQCB reviewed the AEC Second Quarter 1999 QMR and had the following comments (RWQCB, 1999): · The thickness of free-product at wells was not noted in the report. The RWQCB directed that current and historical thickness data in tabular form be provided in future reports in addition to depths to water and free-product; · Provide current and historical tabular data regarding method of extraction and volumes of extracted free-product; · Provide an explanation as to the groundwater depth correction factor given in the report; · Clarify wellhead elevation data and describe the location and assumed elevatiOn of assumed datum Point, if used; provide information regarding wellhead survey as elevations do not correlate with topographic map area; the 7.5-minute of the · As EPA Method 601 constituents were not detected for two rounds, that analysis could be discontinued; · Provide copies of QMRs for October 1999 and January 2000 monitoring events; · ~ Provide minimum of two quarters of groundwater quality data for toial lead and ethylene dibromide (EDB) at all monitoring wells; · The proposed location of new well MW-8 south of well MW-7 (May 1998 Additional Assessment Workplan) may not adequately define the southern extent of the plume; provide a map showing a revised location; · The RWQCB requested that information regarding the operation and effectiveness of the vapor extraction/air sparging remediation system be provided since its startup in May 1999 is included Appendix C); (letter as · Describe procedures for measuring groundwater depths in the future, especially times between uncapping a well and measuring its water level; · Include analyses for EDB, total lead, MTBE, tertiary amyl methyl ether (TAME), di- isopropyl ether (DIPE), ethyl tertiary butyl ether (ETBE), and tertiary butyl alcohol (TBA); if MTBE, TAME, DIPE, ETBE, or TBA are detected, confirm the presence using EPA Method 8260b; · Sample and analyze groundwater for general minerals, nitrate, and total Kjeldahl nitrogen (TKN) during two non-consecutive sampling events, at a minimum of three wells, including the upgradient well; and · By October 1, 1999, notify all cu~:rent record holders of fee title of proposed actions at the Site (adjacent property Owner notification). 2.13 Free-Product Removal Free-product was measured to 0.29 feet at well MW-1 (May 1999) and 2.67 feet at well MW- up 7 (May 1999). Free-product removal commenced on May 12, 1999 (AEC, 2000b). Free- product removal was performed using a bailer by hand at wells MW-1 and MW-7. Between 5/12/99 and 8/20/99 a total of 0.85 gallons of free-product was removed from well MW- 1 and a total of 7.35 gallons was removed from well MW-7. The records available do not indicate if free-product was removed from any wells after the August 1999 date. E2C Remediation, LLC 11 I Project Number 1801BK04 A{7o_ust 15. 2001 2.14 Soil Remedial System Installation and Operation - April to August 1999 As wells MW-1 and MW-3 were located close to the soil source area, these two wells were converted into vapor extraction (VE) wells in April 1999. The wells were manifolded to a Paragon ET-250 Thermal Oxidizer vacuum system in April 1999 (AEC, 2000b). The vapor extraction system became operational on May 7, 1999. Groundwater elevation.data recorded on May 12, 1999 and results of the laboratory analyses of samples collected on that same day indicated that application of vacuum within the extraction wells had changed the position of the existing plume and the groundwater dynamics. Based on these measurements and laboratory results, the vacuum magnitude was diminished and the .air injection suspended in order to prevent further southward migration of free phase gasoline. The Paragon Thermal Oxidizer portion of the system was leased from Vapor Extraction Technologies, Inc. (VET): The Paragon unit functioned intermittently from the initial startup time through June 2, 1999 when it failed and could not be restarted. The system remained out-of -service through June 22 due to undiagnosed electrical problems. It was restarted June 23 and ran continuously through June 30 when additional electrical problems Caused another failure. The machine remained out-of- service through August 2 at which time it was successfully repaired and restarted. Another failure on August 6 prompted VET to remove the machine from the site and transport it to their Orange County facility for overhaul. According to AEC (AEC, 2000b), no measurable vacuum was detected within any of the other monitoring wells during the initial startup of the system, even when both MW-1 and MW-3 were used for vacuum simultaneously. This information, coupled within the relatively Iow volume of gasoline removed during the 35-day operation of the system (approximately 464 gallons, calculated from periodic flow rate and LEL measurements), indicated that the overall efficiency of the system was inadequate with only two wells installed 2.15 RWQCB Review of 10/99 QMR & Additional GW Assessment Workplan The RWQCB reviewed the October 8, 1999 QMR and a November 1999 Additional Groundwater Assessment Workplan both prepared by AEC. Based on their revieW, the RWQCB had comments and requested additional data and/or work, which are summarized following: · Clarification of the AEC conclusions regarding the inadequacy of the previously operated VE system; · That additional wells be constructed in such a manner as to accommodate large seasonal fluctuations of the groundwater table at the Site; · The RWQCB agreed with the placement of proposed well MW-8 and requested an additional well west of well MW-7; the RWQCB proposed placing this well west of MW-7 in the City of Bakersfield right-of-way to expedite installation; That an additional well be placed adjacent to Brundage Lane between wells MW.-3 and MW-5; · Submit an amended Workplan to address the RWQCB comments; · To include in the amended Workplan a description of the method to be used to determine the location of monitoring wells and the elevations of the measuring points and to survey all existing and new wells using a licensed Land Surveyor; and ° Provide information regarding the location of all drinking water supply wells within a 1/2- mile radius of the Site. 1;' E~C Remediation, LLC prc_iect Number 1801BK04 A~l~_ ust 15. 2001 ' Revised ' 16 Additional Groundwater Assessment Workplan - February 2000 2. AEC submitted a revised Workplan that proposed installing four (4) groundwater monitoring wells l~W-8 through MW-11, 'one onsite (MW-8) and three offsite. In this Workplan, one round of grou~ndWater mineral analyses were also summarized. 2.17 RWQCB Review of Revised Additional GW AssesSment Workplan The RiWQCB reviewed the revised WorkPlan and h'ad comments (RWQCB, 2000a) which are summarized following: · Soil samples from well boreholes must be collected from 5 feet bgs to total depth; soil samples must be analyzed for BTEX/MTBE/TPHg using EPA Methods 8020/8015; · The monitoring well survey must include sufficient off-site and onsite landmarks; · That investigation and cleanup be expedited; · Provide an Interim Corrective Action Work Plan (ICAWP) for remediation of the Site; · Submit a report documenting well construction and sampling by 15 June 2000; · Submit the ICAWP by 30 May 2000; and · Submit the landowner notification information as requested in the 3 August 1999 letter. 2.18 Additional Site Assessment Work - April 2000 Two _.Z) soil borings were advanced with the collection of soil samples. The borings were desig ated VE-1 and VE-2 and were converted into VE wells. Soil samples were analyzed for BTEX and MTBE. The samples from VE-1 contained TPHg at a maximum concentration of 210 milligrams per kilogram (mg/Kg, which is' equivalent to ppm) inthe sample from 35 feet below groun8 surface (bgs). The only BTEX compound reported was xylenes at a concentration of 9.9 mg/K~ (20-foot sample from boring VE-1). MTBE was not reported in any of these soil Samples. Apparently, the newly installed VE wells were put online, and no significant increase in influent concentration was observed, therefore, the Paragon VE system was shut down 2000b). (AEc, 2.19 Groundwater Monitoring Well Installations - June 2000 On June 29 and 30, 2000, fOur (4) additional soil borings were advanced with collection of soil sampl,~s. The borings were converted into groundwater monitoring wells MW-8, MW;9, MW-10, and MW-11 (see Figure 2 for locations). Well MW-8 was placed onsite, the other three were place8 offsite. The installation of these wells was reported in the AEC, 2000b document. Appendix D contains copies of boring Iog~ and well construction details for wells MW:8 through MW-11. These four (4) wells were developed on July 3, 2000 and then sampled after development in conjunction with the existing wells at the Site. Soil samples were analyzed for TPHg! BTEX, and MTBE. All samples were reported as non-detect except for the 40- and 45- foot semples from boring MW-8 and the 50- to 60-foot samples from boring MW-11 (Table 9 in Appendix E presents a summary of soil analytical data excerpted from AEC, 2000b). 2. ~9.1 Boring MW-8 Analytical Results for Soil Samples The 4D-foot sample was reported to contain Iow concentrations toluene (6.97 mg/Kg) of and xylen~s (19.1 mg/Kg). The 45-foot sample was reported to contain concentrations of TPHg (11.4 rog/Kg), benzene (5.36 mg/Kg), toluene (365.5 mg/Kg), ethylbenzene (201 mg/Kg), and xylen(~s (745 mg/Kg). Due to these high concentrations, was the detection limit for MTBE 13 mg/K.(I, so it is not known if MTBE was present in this sample at concentrations below 13 E~C Rer, ~ediation, LLC · 1'3 I=roject N~umber 1801BK04 August 15. 2001 2.19.2 Boring MW-11 Analytical Results for Soil Samples The 50-foot sample was reported to contain Iow concentrations of BTEX (benzene at 0.0615 mg/Kg, toluene at 0.129 mg/Kg, ethylbenzene at 0.043 mg/Kg, and xylenes at 0.220 mg/Kg). The 55-foot sample also contained Iow concentrations of BTEX (benzene at 0.0607 mg/Kg, toluen~ at 0.207 mg/Kg, ethylbenzene at 0.124 mg/Kg, and xylenes at 0.357 mg/Kg). The 60- foot sample was reported to contain concentrations of toluene (0.0169 mg/Kg, ethylbenzene mg/Kg, and xylenes (0.0433 mg/Kg). MTBE was reported as non-detect in these (0.00.9;42 samples. 2.19.3 Third Quarter 2000 Groundwater Monitoring and Sampling -Grounldwater at new wells MW-8 through MW-11 was sampled on July 3, 2000 in conjunction with tl~e third quarter sampling round. Table 3 includes a summary of the analytical results for ' this sampling round. The analytical results are summarized following: · Water at well MW-7 was not sampled as that well contained free-product; · TPHg was non-detect in the water samples from wells MW-2, MW-3, MW-4, MW-5, MW- 6, MW-9, and MW-lO; · TPHg was detected at concentrations of 130 micrograms per liter (pg/L) and 260 ~g/L in the samples from wells MW-1 and MW-8, respectively; · Benzene was detected at concentrations of 8.2 p.g/L and 820 pg/L in the samples from wells MW-1 and MW-8, respectively; · Toluene was detected at concentrations of 8.8 p.g/L and 64,000 izg/L in the samples from wells MW-1 and MW-8, respectively; · Ethylbenzene was detected at concentrations of 1,600 ~g/L and 6,300 p.g/L in the samples from wells MW-1 and MW-8, respectively; · Xylenes were detected at concentrations of 24,000 pg/L and 73,000 pg/L in the samples from wells MW-1 and MW-8, respectively; and · MTBE was only detected in the sample from well MW-8 at a concentration of 550 pg/L. 2.20 July 2000 Groundwater Elevations Gr°u~dwater elevatiOns prior to July 2000 Were measured from a relative datum point, the top of one cf the existing wells. AEC had the wells surveyed by a licensed surveyor on July 21, 2000. Their July 2000 measurements were based on that survey. Table 2 contains a summary of historical groundwater elevation data. Based on the July 2000 measurements, AEC calculated. the groundwater flow to be S43°E with a gradient of 2.1 feet of vertical drop per 100 feet of ' horizontal distance (ft/ft), which equals 0.021 fi/ft. 2.21 RWQCB Response - 11/17/00 Base~d on a review of the work discussed above, the RWQCB issued a directive dated November 17, 2000 (RWQCB, 2000c)requesting the following: · Prepare a summary report of previous site assessment and remedial efforts to date; · Provide the locations, uses and construction details of water wells located within 2,500 feet of the Site; · Inspect the condition and construction of all monitoring and vapor extraction wells on-site and off-site. Evaluate the utility of the existing vapor extraction wells for future remediation. Prepare a report on the results of this inspection and evalUation. E2C R~mediation, LL C 14 ' I Proiect Number 1801BK04 A{~gust 15. 2001 Have .the lOcations and elevations of all wellheads surveyed by a licensed land surveyor and submit the results to the RWQCB; · ' That quarterly groundwater monitoring continue and that a report detailing the monitoring and results be submitted; · Prepare a Workplan for further assessment and remediation of soil and groundwater impacted by petroleum hYdrocarbons on-site and off-site; and · In addition, the RWQCB also requested that compliance with "landowner notification" requirements found in Health and Safety Code, Section 25297.15(a). Upon receipt of this directive, the Site owner procured three bids from Consultants to comply with t~e requirements of the directive. After review of the bids, the Site owner contracted with E2C, Ir~c. of Bakersfield, California to complete the additional scope of work. E2C r(,quested a time extension for the submittal of the report addressing the above items and that e :tension was granted by the RWQCB (RWQCB, 200Od). 2.22 RWQCB Response - 11/29/00 Based on a review of the work discussed above, the RWQCB issued a directive (RWQCB, 2000a requesting the following: · Prepare a summary report of previous site assessment and remedial efforts to date; and construction details of water wells located within 2,500 Provide the locations, uses feet of the Site; · Inspect the condition and construction of all monitoring and vapor extraction wells on-site and off-site. Evaluate the utility of the existing vapor extraction wells for future remediation. Prepare a report on the results of this inspection and evaluation. · Have the locations and elevations of all wellheads surveyed by a licensed land surveyor and submit the results to the RWQCB; · That quarterly groundwater monitoring continue and that a report detailing the monitoring and results be submitted; · Prepare a Workplan for further assessment and remediation of soil and groundwater impacted by petroleum hydrocarbons on-site and off-site; and · In addition, the RWQCB requested compliance with "landowner notification" requirements found in Health and Safety Code, Section 25297.15(a). Upon receipt of this directive, the Site owner procured three bids from Consultants to comply with tl~e requirements of the directive. After review of the bids, the Site owner contracted with E2C, I ~c. of Bakersfield, California to complete the additional scope of work. 2.23 Additional Assessment Work- January 2001 This Section discusses the Tasks requested by the RWQCB directive of November 29, 2000. Note: The Summary Report of Previous Assessment & Remedial Work is included the Site History of this report. ! . E2C Remediation, LLC I Prelect Number 1801BK04 Audust 15. 2001 2.23.1 Surrounding Area Water Well Survey A review of Kern County Water Agency, California Water Service (cWs), and State of California Water Resources (SDWR) records was performed to identify water supply wells within 2,500 feet of the Site. The following Subsections contain discussions of the results. 2.23.2 Well ID# 35-02 (CWS) The well is located at 730 Brundage Lane approximately 600 feet west of the Site. The well is drilled to 600 'feet bgs and the bowl is set 200 to 300 feet bgs. The pUmping depth, is approximately 160 to 180 feet bgs and the well is sealed at 100 feet bgs. In December 2000, the water level was at 190 feet bgs and there is no problem with Water. quality (oral communication with CWS January 2001). 2.23.3 Well ID# 36-02 (CWS) The well is located at the intersection of 3rd Street and'V Street approximately one-half mile northeast of the Site. The well is drilled to 600 feet bgs and the bowl is set 200 to 300 feet bgs. The pumping depth is approximately 160 to 180 feet bgs and the well is sealed at 100 feet bgs. There is no problem with Water quality (oral communication with CWS January 2001). 2.23.4 Well ID# 159-01 (CWS) The well is located at the intersection of Texas Street and Bliss Street approximately one-half mile northeast of the Site. The well is drilled to 600 feet bgs and the bowl is set 200 to 300 feet bgs. The pumping depth is approximately 160 to 180 feet bgs and the well is sealed at 1 00 feet bgs. There is no problem with water quality (oral communication with CWS January 2001). 2.23.5 Well 30/28-6 (SDWR) This well is located at 251 S. Union Avenue, the corner of S. Union Avenue and Terrace Way approximately 2,600 feet southeast, of the Site. The well's owner is listed as Casa Royale Motor Inn. Between 8/24/70 and 8/27/70 a 24-inch boring was drilled to 520 feet bgs using a rotary rig. Steel casing (1/4" gauge) was set from the surface to total depth. The screen consists of 14 perforations per row with three (3) rows per foot and is set from 250 to 500 feet bgs, Perforations are 2 1/2" by 1/8". 'Birds Eye' gravel was used for the fi ter pack. The well is sealed from the surface to 50 feet bgs; 2.23.6 Ex/sting Well InsPection On January 3, 2001, the existing wells at the Site were inspected. Following is a summary of the inspection findings: · All wells were free and clear from the surface to the total depth; · Wells MW-9 and MW-10 casings were bowed slightly at approximately 20 feet bgs such that a pump cannot be lowered to the bottom. However, a bailer can be lowered to the bottom; these two wells will be purged using a in the future bailer; · All monitoring wells contained significant black silty-like materials at the bottom; at this time the wells require re-development; · All wellheads were in good condition; · Wells VE-1 and VE-2 were dry, in good condition and were free and clear to their bottoms; and ! E2C Reined/at/on, LLC 16 ! '. I pr¢/ect Number 1801BK04 August 15. 2001 Two riser observed; theSe pipes to be connected to the two VE wells'; pipes were appear one of the pipes was emitting heavy fuel hydrocarbon odor; E2C personnel capped both open pipes. 2.23.7 Survey Wells During January 2001, E2C had Alta Engineering/Hughes Surveying (Hughes) (State of California Licensed Land Surveyor No. 3779) resurvey the wells· for horizontal and vertical control based on a Bench Mark (Elevation 396.41 feet above mean sea level, or +msl) in the abutment of the bridge that spans the Kern Island Canal - Central Branch proximate to the Site. The surveyor's plot is included in Appendix F. Hughes opened each well and surveyed the top of the PVC casing at the north edge of the casing for vertical control. Hughes marked the surveyed spot with a black marker pen. Horizontal control was established to the center of the steel traffic box that protects each well. 2.24 Fourth Quarter Groundwater Monitoring and Remedial Action Plan On January 3, 2001, E2C personnel conducted Fourth Quarter 2000 groundwater monitoring activities, which included measuring depths to groundwater, checking wells for free-product, purging wells, and collecting groundwater samples. On January 24, 2001, E2C submitted a detailing the activities and results of the Fourth Quarter 2000 groundwater monitoring. report Included within this 'report E2C submitted a Remedial Action Plan (RAP). The RAP was submitted to comply with the RWQCB directive of November 17 and amended directive of November 29, 2000, which mandated the preparation of a Workplan for further assessment and remediation of soil and groundwater impacted by petroleum hydrocarbons on-site and off,site. The RAP presented the scope of services required to perform additional site assessment work and to install a soil and groundwater remedial system. 2.24.1 RWQCB Remedial Action Plan Response - February 26, 2001 In a letter dated February 26, 2001 the RWQCB conditionally approved portions of the RAP submitted by E~C on January 24, 2001 (RWQCB, 2001). Following is a summary of the approved portions of the RAP and portions added by the RWQCB: · Regulatory Liaison, Encroachment Access/Well Permitting, & Project Management; · Well Installation - three (3)off-site groundwater monitoring wells, one (1) deep offsite groundwater monitoring well, one (1) 37-foot shallow soil vapor extraction well, and two (2) air sparging (AS) wells (Note: one existing vapor extraction well also to be used in pilot test.); · Perform SVE/AS Pilot Test; · Prepare and submit Report of Findings for Pilot TeSt; · Perform quarterly groundwater monitoring and sampling (three quarters); and · Prepare and submit quarterly groundwater monitoring reports 2.25 First Quarter 2001 Groundwater Monitoring On March 2, 2001, E~C personnel conducted First Quarter 2001 groundwater monitoring activities, which included .measuring depths to groundwater, checking wellS for free-product, purging wells, and collecting groundwater samples. EeC Remediation, LLC 17 I I=r¢]ect Number 1801BK04 A~¢ust 15. 2001 2.25.1 Groundwater Elevations Groundwater elevations for this sampling round are summarized in Table 2 with historical elevation data. Based on the March 2, 2001 measurements, groundwater flow at the Site was Southeast at a steep gradient of 0.0180 ft/ft. · · 2.25.2 Groundwater Analytical Results Laboratory analytical results for the Second Quarter 2001 are summarized along with historical data in Table 3. The results of these chemical analyses are summarized following: · Well MW-1 was not sampled due to the presence of 0.37-foot of free-product (see Figure 4 for estimated areal extent of free-product plume); · Significant concentrations of toluene, ethylbenzene and total xylenes were reported in from well MW-7 (9,400 p.g/L, 4,100 pg/L, and 28,000 p.g/L the water sample respectively); · Significant BTEX concentrations were reported in the water sample from well MW-8 (toluene at 53,000 Izg/L, ethylbenzene at 4,000 ~g/L, and xylenes total at 26,000 lzg/L) Note: Due to a dilution factor, benzene was reported at a concentration of <200 Izg/L; Very high c°ncentrations of TPHg were reported in the water samples from wells MW-7, 24,940 pg/L, and MW-8, 34,280 Izg/L and a significant concentration of 2,704 pg/L was reported in the water sample from MW-3 (see Figure 6 for a TPHg isoconcentration plot); · All gasoline range constituent hydrocarbons that were tested for in groundwater Samples from monitoring wells MW-2, MW-4, MW-5, MW-6, MW-9 and MW-10 were reported as non-detect at or above the minimum detection limit; · Analysis of a free-product sample from MW-1 revealed a composition of predominately volatile aromatic constituents xylenes, toluene, and ethylbenzene, with the benzene fraction reported as 1.07 percent by weight. In addition, no oxygenate compounds or alcohols were reported in the sample; and · MTBE was reported as non-detect in any of the water samples submitted for analysis. 2;25.3 Conclusions Based on the daia presented above, E2C made the following conclusions: · The groundwater gradient at the Site was steep, and was calculated at 0.0180 ft/ft in a southeasterly direction; · All existing monitoring wells need redevelopment to clear fines from the casings and redevelop the filter packs; · Significant concentrations of TPHg and BTEX compounds, excluding benzene, were detected in the water samples at two of the wells, MW-7, and MW-8, and free product was found in MW-1; · The downgradient monitoring well, MW-11 was dry this monitoring event, however as noted in the Fourth quarter 2000 report this well has been impacted by significant concentrations of TPHg and BTEX which indicates that the downgradient extent of the plume remains undefined; · The groundwater contaminant plume at the Site is long and narrow, which indicates that it is directly controlled by the steep groundwater gradient; ! E~C Remediation, LLC 18 I pr¢iect Number 1801BK04 Ai~o_us! 15. 2001 lateral extent of the groundwater Plume is defined in the cross-gradient directions as · The indiCated by the non-detect concentrations in wells MW-2 (upgradient), MW-4, MW-5 (east side-gradient), and MW-6, and MW-9 (west side-gradient); and well MW-1 cannot be excluded due to the presence of free · The presence of benzene at product. Aisc, benzene detection lamir'for well MW-7 was 20 p,g/L and 200 pg/L for MW- 8. The water samples from these monitoring wells required dilution due to the elevated concentrations of TPHg and other compounds, BTEX therefore, benzene could be present at concentrations between 0.5 and 20 p,g/L at MW-7 and concentrations . between 0.5 and 200 p.g/L in MW-8. 2.25.4 Recommendations Based on the data presented above and the conclusions, E2C made.~ the following recommendations: · Implement RWQCB approved portions of the RAP submitted on January 24, 2001 and those details added by the RWQCB in a letter dated February 26, 2001. The Workplan calls for installation of three (3) additional groundwater monitoring wells to define the areal extent of the groundwater plume, one (1) deep offsite groundwater monitoring well to help assess vertical concentration gradients, three (3) air sparging wells and one (1) shallow soil vapor extraction well. The new AS and SVE wells would be utilized along with an existing VE well for a SVE/AS pilot test; Prepare and submit Report of Findings for the SVE/AS Pilot Test; · Develop new wells and redevelop all existing wells; · Perform quarterly groundwater monitoring and sampling and. reporting for an additional three qUarters; and · Amend the analytical program to test for TPHg using EPA Method 8015M, BTEX using EpA Method 8020 and prior to site closure, analyze groundwater samples for the fuel · oxygenates using EPA Method 8260b to verify non-detection of these compounds. 2.26 Regulatory Compliance On March 29, 2001 E2C submitted an addendum to (see the RAP Section 2.24 above), which was submitted on January 24, 2001. The Addendum was developed pursuant to the RWQCB letter dated February 26, 2001 in which the RWQCB approved E2C, Inc.'SWorkplan to perform remedial action at the Mr. Fast property at 600 Brundage Lane additional site assessment and in Bakersfield, California with comments. (see Section 2.24.1 above). In their comments, the RWQCB requested addendums to the Workplan regarding well construction diagrams for of soil extraction/air, sparging pilot testing. In addition, proposed wells and a description vapor the RWQCB requested sampling of the free-product and chemical analysis thereof. the well construction diagrams and a description of the SVE/AS pilot The addendum presented testing procedures and methods. In addition, the free-product was sampled and analyzed. In general, the 'product sample was comprised predominately of the volatile aromatic constituents xylenes, toluene, and ethylbenzene, with the benzene fraction reported as 1.07 percent by weight. In addition, no oxygenate compounds or alcohols were reported in the sample. As a result of the non-detection of oxygenates in water samples for two quarters and also based on the results of the fingerprint analysis of the free-product sample E2C iS recommended a change in the analytical program for groundwater samples as follows: · TPHg using EPA Method 8015M: E~C Remediation, LLC 1 ~ I pro_iect Number 1801BK04 A(~gust 15. 2001 · BTEX using EPA Method 8020; and · Prior to site closure, analyze groundwater samples for the fuel oxygenates using EPA Method 8260b to verify non-detection of these compounds. AIsc included in the Addendum was a section on the condition of well MW-11. On March 2, 2001, this well was observed to be dry. It appeared that the bottom 12 feet of the well has been filled with fines. E2C recommended that this replaced. be On 20 APril 2001, the RWQCB approved the Addendum to Remedial Action Plan (see Section 2 24.2. above) with minor comments (RWQCB, 2001 d). 2.27 Request to Start Off-Site Remediation Based on a data review of additional site characterization work and the Second Quarter 2001 groundwater monitoring data, E2C submitted a request to the RWQCB initiate off-site remediation and install monitoring wells (shallow and deep) along Fig Street (E2C, 2001c). This request was predominately based on the amount of free-product (approximately 5 feet) observed in well MW-12 and the significant concentrations of fuel hydrocarbons reported at wells MW-13 and MW-14 (see Table 1). In addition, a new technology (ISO-GENTM) was proposed.. ISO-GENTM is a downhole groundwater electrolysis system to aid in providing high concentrations of dissolved oxygen to enhance microbial degradation in the Iow-middle concentration portions of the dissolved phase plume. A copy of the ISO-GENTM protocol was provided in the request (E2C, 2001c). 3.0 REPORT OF FINDINGS - ADDITIONAL SITE CHARACTERIZATION E2C obtained'obtaining drilling permits from the Kern County Environmental Health Department (KCEHD), access encroachment permits from the City of Bakersfield Building Department (for wells in street), and off-site owner permission for installation of well MW-12. Monitoring wells MW-12 through MW-14 were then installed in off-site locations. Well MW-11R was also installed to replace well MW-11. SVE and AS wells were also installed onsite to conduct the SVE/AS Pilot Test (see Section 4.0 following). 3.1 Soil Borings and Soil Sampling A soil boring was advanced to the desired depth at each well (monitoring, SVE or sparge) locations. Each soil boring was advanced using a truck-mounted location. Figure 2 depicts hollow-stem auger drill rig, conventional equipment for environmental site assessments. Soil samples were collected at 5-foot intervals from the surface to total depth. Samples were containing three brass or stainless steel sleeves. collected using split-spoon sampler Drilling operations', soil sampling and field monitoring for the presence of hydrocarbons was environmental geologist under the supervision of a State of performed by an experienced California Registered Geologist. A hydrogen flame ionization detector (FID) was used during the drilling process to detect the presence of hydrocarbons (note: these are only qUalitative tests not to be construed to represent a certified laboratory analysis). Sample lithology and pertinent drilling information was described and recorded on field boring-logs, which are contained in Appendix G. E~C Remediation, LLC 20 pr¢_iect Number 1801BK04 AuguSt 15. 2001 All soil samples were labeled, capped and placed in a cooler with ice at a temperature of 4© C for possible analysis. Four (4) selected soil samples (total of 18) from each monitoring well boring and three (3) selected soil samples (total of 12) borings were from VE/AS well submitted for chemical analyses. Samples for analyses were selected based on the field screening measurements. These samples will be transferred to a California State Certified laboratory under chain of custody procedures. Control Soil samples were chemically analyzed for the following fuel hydrocarbon compoundS: 1) TPHg using EPA Method 8015; 2) BTEX using EPA Method 8260b; 3) Five fuel oxygenates, including MTBE, using EPA Method 8260b; and 4) The detection limits were 0.5 milligrams per kilogram (mg/Kg) (equivalent to parts per million) for TPHg, 0.5 mg/Kg for BTEX compounds, and 0.005 mg/kg for fuel oxygenates. Note: Where significant detections of analytes occurred in a sample, the detection limits increased as this sample required dilution. 3.1.1 Soil Analytical Results Low concentrations of fuel hydrocarbons were reported in soil samples from each boring, except for the borings for well MW-11R and VE-3. All soil samples analyzed from these two borings were reported as non-detect for all analytes of concern. Of significance, the soil samples analyzed from the boring for well MW-12 contained moderate concentrations of TPHg and BTEX, specifically the sample from the 50- and 55-foot depths, which is within the capillary fringe in that area. In addition, free-product was noted on the sampling device when samples were collected at those depths. This suggested the potential for free-product on groundwater at this location. Soil analytical results'are summarized in Table 4. Analytical laboratory reports are included as Appendix H. 3.2 Well Installations 3.2.1 Shallow Groundwater Monitoring Wells Existing monitoring data from the Site indicated first groundwater occurred approximately 45 to 50 feet bgs with wide elevatiOn fluctuations. As such, monitoring wells MW-11R, MW-12 and MW-13 were each advanced to 65 feet bgs and with similar construction (see Appendix G, boring logs, for well construction details). These three (3) monitoring wells were constructed using 2-inch ID Schedule 40 PVC casing screened from approximately 40 feet to 65 feet bgs with 0.010 slotted casing at the bottom followed by blank casing at the top. Graded sand (#2/12) was emplaced to a point two feet (38 feet bgs) above the slotted interval, followed by a three-foot bentonite seal, followed by neat-cement grout to the near surface, approximately 1 foot bgs. A steel traffic box was set in concrete slightly above grade over the wellhead for protection. Following construction, the wells were developed using surge blocking and bailing and overpumping. ,Upon completion of the new wells, the new wells'were temporarily surveyed pending resurvey of all wells to meet State of California Assembly Bill 2886 (AB 2886) requirements. Elevations of E2CRemediation, LLC 21 Project Number 1801BK04 August 15. 2001 existing wells were used to tie in the new wells to 0.01 foot. 3.2.2 Deep Groundwater MonitOring Well MW-14 Well MW-14 was installed to monitor the deeper portion of the first water-bearing zone. MW-14 was placed proximate to MW-13 (see Figure 2 for locations). The boring for MW-14 was straight drilled to 65 feet bgs at which point soil sampling commenced until a depth of 78 feet. The well was then constructed using Schedule 40 PVC casing screened from approximately 68 to 78 feet bgs with 0.010 slotted casing at the bottom followed by blank casing at the top. Graded sand (#2/12) was emplaced to a point-two feet.(66 feet bgs) above the slotted interval. As this well is located very close to well MW-13, bentonite was placed from 66 to 30 feet bgs (for that portion that was above the water table, the bentonite was hydrated with clean potable water). A neat-cement grout was then placed to the near surface (approximately one foot bgs) to complete the seal. A steel traffic box was set in concrete slightly above grade over the wellhead for protection'. Following construction, the well was developed using surge blocking and bailing and overpumping. Upon completion of the well the new well was temporarily surveyed' pending resurvey of all wells to meet AB 2886 requirements. The elevations of existing wells were used to tie in the new well to 0.01 foot. A State of California licensed surveyor surveyed and tied the new wells into the existing survey. The top of casing elevation was surveyed to 0.01 foot. 3.2.3 Installation of AS Wells Three (3) AS wells were installed during the period of April 24 through April 25, 2001 (see Figure 2 for locations). As with the monitoring wells, soil borings were advanced to the desired depth with the collection of soil samples at five-foot intervals. AS wells AS-1 and AS-2 were constructed in a similar manner (see boring logs in Appendix G) while AS-3 was constructed slightly different. AS-1 and AS-2 At air sparge AS-2, a long microporous sparge point was wells AS-1 and 2.5-foot set at the bottom (64 to 66.5 feet bgs followed by blank Schedule 40 PVC to the surface. Graded filter pack sand (#2/12) was placed to a point approximately two feet above the top of the sparge followed bentonite to 30 feet followed neat-cement to the point by approximately bgs, by a grout near surface. A traffic-rated steel box set in concrete at the surface completed the installation. AS-3 At air sparge well AS-3 a clayey silt layer was encountered at 61.5 feet bgs, so thiS well was completed above that layer. A 2.5-foot long microporous sparge point was set at the bottom (59 to 61.5 feet bgs followed by blank Schedule 40 PVC to the surface. Graded filter, pack.sand (#2/12) was placed to a point approximately two feet above the top of the sparge point followed by bentonite to approximately 30 feet bgs, followed by a neat-cement grout to the near surface. A traffic-rated steel box set in concrete at the surface completed the installation. 3.2.3 Installation of Well VE-3 This well was constructed in such a manner that the slotted interval should remain above the water table throughout the year. The soil boring was advanced to 37 feet bgs at which point the well was constructed (see boring Icg in Appendix G). Twenty feet (10 to 30 feet bgs) of slotted E2C Remediation, LLC 22 I Project Number 1801BK04 ' August 15. 2001 (0.020") Schedule 40 PVC was placed at bottom followed by blank PVC to the surface. the Graded sand (#3) was placed to a point approximately one foot above the top of the slotted section followed by three feet of hydrated bentonite folloWed by neat-cement .grout to the near A traffic-rated steel box in concrete at the surface the installation. surface. set completed 3.3 Subsurface Stratigraphy and Hydrogeology · In general, the subsurface at the Site is characterized by approximately 5 feet of silty sand at the surface followed by sand to approximately 50 to 55 feet bgs. Silty clays, clayey silts, sandy silts, and finer-grained silty sands occur from that depth to approximately 80 feet bgs. Boring logs are included as Appendix G. Figure 7 presents an interpretation of the subsurface stratigraphy in cross-section along the groundwater flow direction. In previous borings for wells (e.g., MW-10), first groundwater was encountered at approximately 47 feet bgs. At the boring for well MW-11R, first groundwater was encountered between 46.5 and 50 feet bgs. At well MW-12, first groundwater was not encountered until 56.5 to 60 feet bgs. Note: Between 50 and 55 feet bgs, fuel product was observed on the sampler device at the well MW-12 boring, which indicated that floating product most likely occurred on groundwater in that area. The most recent depth to groundwater measurements (see Table 1) showed water at 45.34 feet below top of casing (BTOC) at MW-7 and 54.76 feet BTOC at well MW-11R. MW-11R is 90 feet south, of MW-10 in the downgradient direction. This located approximately general indicates a very steep groundwater gradient in this area of 0.15 ft/ft. The overall gradient at the Site for the Second Quarter 2001 is approximately 0.05 ft/ft, a very steep gradient. Figure 3 the at the Site. The recent depths to groundwater are also depicts groundwater gradient depicted on Figure 7 (cross-section). 4.0 REPORT OF FINDINGS OF SVE/AS PILOT TEST During the period of May 22 through May 29, 2001, E2C was onsite conducting a vapor extraction and air sparge pilot study to assess the site condition for use of vapor extraction and air sparging techniques in the remediation of petroleum hydrocarbon impacted soil and groundwater. The existing vapor extraction well VE-1 and the newly installed wells, vapor extraction Well VE-3 and air sparge wells AS-1 through AS-3, were used in the study in addition to wells MW-1 and MW-8. The study was conducted to determine whether acceptable aquifer conditions existed for the utilization o'f air sparging, that vadose zone conditions were acceptable for the use of vapor extraction (in conjunction with groundwater air sparging and as a stand alone remediation technique) and an estimate of the effective radius of influence for both the air sparge and vapor extraction for design of the remedial system. The test was originally scheduled to be performed starting May 17, however, the air sparge compressor was found to be undersized and was replaced with an Ingersol-Rand 10-hp rotary screw compressor and the test restarted on May 22 and continued'through May 26. The test was shut down over a holiday weekend (May 26, 27 and 28) and restarted for May 29. ~ 4.1 Air Sparge Observations The air sparge study included the use of compressed air, to activate the sparge wells, compressed helium, as a sparging source tracer, flow and pressure gauges, helium detectors, .E~C Remediation, LLC 23 I Pro_iect Number 1801BK04 August 15. 2001 I. an.d a oxygen meter. Compressed were sparge dissolved air and helium introduced into the point while measurements of pressure,' dissolved oxygen, and helium were collected at various wells. The pilot study observations are included in Appendix M. The helium observations were I however, the dissolved observations revealed significant data. inconclusive, oxygen In general, the air sparging was conducted on a relatively continuous basis at a pressure of 10- I 15 pounds inch (psi) at each point with flow ranging from 4'to 8 cubic feet per per square sparge minute (cfm). These are similar to those found.in full-scale remediation. I 4.1.1 Dissolved Oxygen ObserVations Generally, dissolved oxygen (DO) concentrations increased in wells after startup of the air sparge unit. Significant increases were observed at several of the wells. I MW-6 - Significant increase in DO was observed in MW-6 (1.40 mg/L at start of test and 12.50 mg/L at end of test), which is located 84 feet from AS-1 (see Table 5), 83 feet from AS-2 and I 128 feet from AS-3. MW-8 - At well, MW-8, located between AS-2 and AS-3 (see Table 5 for well distance matrix), initial DO was.measured at 1.60 and 2.20 on May 21, the day before starting the test. During I of .DO between 0.60 and 1.00. After the first day, DO the first day (May 22) testing ranged increased significantly ranging from a Iow of 1.80 (May 29, test restart) to a high of 6.60 (May 24). I MW-3 - Likewise, DO increased at MW-3, located 47 feet from AS-2 and 53 feet from AS-1. The DO increase response was fairly rapid, as noted at well MW-3 on May 29. The test was I restarted and by the end of the test that day, DO had increased to 4.00. MW-1 - MW-l, located 15 feet from AS-l, showed similar DO response as seen at MW-3. MW-4 - MW-4, located 35 feet from AS-1 and 40 feet from AS-3, showed dramatic DO I 23. As at MW-3, DO increased significantly on the last increases up to a high of 8.40 on May day of testing from a measurement of 2.40 at restart to 5.60 by end of day. I 4.1.2 Air Sparge Test Conclusions The results indicated the acceptability of the aquifer for air sparging and a conservative estimate of the air sparging radius of influence is in excess of 30 feet. This effective radius of influence is I shown by large increases in DO at well MW-6, located 83 feet from AS-2. The overall effectiveness of the combined system (air' sparge and SVE) is also seen in the water Ielevation rise in well MW-7 of approximately 0.6 foot from start to end of test (see graph in Appendix L). MW-7 is located across Brundage Lane approximately 77 feet from AS-2, 92 feet from AS-3, and 118 feet from AS-1. I Of significant note is the rate at which influent concentrations changed with time on air sparge. Initial influent concentrations were Iow (200 ppm). As sparge duration increased, influent I concentrations increased such that by the end of the testing (approximately 5 days) influent concentrations had risen to a high of approximately 3,200 ppmv. This relatively slow rise in influent concentration appears to be influenced by two factors: I · Time to reach DO saturation of the groundwater such that air is no longer going into solution, but is instead stripping the hydrocarbons from the water in-situ; and i E~C Rernediation, LLC 24 prelect Number 1801BK04 August 15. 2001 · The type of contaminants present. The Summa Canister test on Influent #10 indicated that 99%+ of influent was at C6+ and that the volatile aromatics comprised less than 2% of. the total influent. Finally, of the volatile fraction xylenes represented, 65% of the total, whereas benzene represented 3% of the total. only The time to reach DO saturation of the water at this site is not surprising due to the close to unlined canal and the steep groundwater gradient at this site. When sparge air proximity an is introduced, the steep gradient moves the oxygen away from the point of release rapidly, thus requiring high volumes and pressures of air to achieve "in-situ" stripping; however, the steep gradient assists in distributing DO downgradient. As long as the steep gradient required pressures and volumes of air and sufficient downgradient plume controls are considered in the design of the overall remediation system, the steep gradient is beneficial to the remedial process. The relatively "heavier" nature of the contaminants indicates that the plume is either old and/or weathered, or earlier remedial efforts removed the lighter end fractions of the plume.' This is significant, insofar as "in-situ" stripping will require high sparge pressures and that aerobic degradation will be a prevalent remedial mechanism. Groundwater air sparging provides dissolved oxygen at a concentration approximately 10-12 mg/L. Calculations of the mass of contaminants present indicates that DO at levels in excess of 15 mg/L will be necessary to accomplish complete mass removal. Because groundwater air sparging alone cannot provide DO at 15+ mg/L, it will be necessary to install ISO-GENTM oxygen generators in selected areas of the plume (directly downgradient of the two identified source areas). This is not to say that in the higher concentration source areas groundwater air sparging will be ineffective, it is the preferred remedial method in the source areas however, in combination with the ISO-GENTM system, a "total plume" approach will be achieved. 4.2 SVE Observations The vapor extraction study included the use of a Solleco Industries 500 SCFM Thermal Oxidizer equipped with a lO-hp PD blower. The system was used to extract vapor from the wells and was equipped to run on liquid propane. Testing and measurement devices included flow and pressure gauges, a water level indicator, portable flame ionization detector (FID) for onsite concentration monitoring, pump and Summa Canisters for collecting influent samples to analytically determine hydrocarbon concentrations. The Thermal Oxidizer was connected to different configurations of vapor extraction wells. A test was run for different lengths of time using different combinations of the wells as extraction (suction) and observation wells. Two (2) monitoring wells (MW-1 and MW-8) were also used as they were nearby and their screened intervals in the wells included a length of screen above the water table in the unsaturated zone. Based on field FID measurements, Summa Canisters were collected and submitted for chemical analyses. The field data sheets, are included as Appendix M. . 4.2.1 Radius of Influence Based on the Pilot Test results, a radius of influence can be calculated for the vapor extraction. Appendix N contains radius of influence calculations. Based on the data from Test 2, the radius of influence for vapor extraction can be extrapolated from the graph and is approximately 80 feet (see Test 2 graph in Appendix N). This result is based on extraction at VE-3 and observation at MW-l, MW-8, and VE-1. Note: A negative pressure of 1-inch H20 was used as the cut-off for well influence calculations. E~C Remediation, LLC . 2~ I Prqiect Number 1801BK04 August 15. 2001 With VE-3 and MW-8 as the extraction wells and-observation at VE-1 and MW-l, a radius of influence of approximately 100 feet can be extrapolated (see Test 9 calculations in Appendix N). With VE-1, MW-l, and MW-8 as the extraction wells and observation at VE-3, the extrapolated radius of influence is approximately 70 feet (see graph for Test 12 in Appendix N). 4.2.2 Removal Rates On May 29, 2001 influent concentrations were at their highest, greater than 1,000 ppm on the FID. The flow rate was 260 scfm. Using this flow rate and the Summa Canister results for that day (total of hydrocarbons plus aromatics from effluent test 12, the maximum result, = 3,220 ppmv and effluent test 14, the minimum result = 715 ppmv) (Appendix O contains influent and effluent analytical results). Using the equation, Removal (lbs/day) = 3,220 x 10.6 x 260 cfm x 1 lb-mole x 86 lbs x 1,440 min 379.5 cf lb-mole day a removal rate between approximately 275 (maximum) and 70 (minimum) lbs/day was calculated. As remediation progresses, the removal rates would be expected to decrease in response to lower source concentrations remaining and potential channeling of vapor flow. Eventually, asymptotic Iow influent concentrations would be attained at which time the effectiveness the vapor extraction/air sparge system would need to be re-evaluated. In conclusion, the radius of influence for a full-scale remediation will be greater than 70 feet and may approach 100 feet. The site stratigraphy and lack of resistance to flow (5" Hg) suggests this site is an ideal 'candidate for vapor extraction. The high removal rates suggest this site has a significant soil and groundwater on-site source, i.e...area requiring remediation. 5.0 SECOND QUARTER 2001 GROUNDWATER MONITORING On June 4, 2001, E2C personnel conducted Second Quarter 2001 groundwater monitoring activities, which included measuring depths to groundwater, checking wells for free-product, purging wells, and collecting groundwater samples. 5.1 Groundwater Elevations Prior to purging and sampling, the depth to groundwater was measured at all wells using a Solinst water level meter. Each monitoring well was measured below the top of casing (BTOC) at the North side of the casing to the nearest 0.01-foot (see Table I for summary of depths; Table 2 contains a summary of historical measurements).. Based on the previous data 'regarding the Site, measurements were taken at the wells in order of least impacted location to most impacted location. In addition, each well was checked for free-product using a Yellowjacket oil-water interface probe. The interface probe and Solinst water level indicator were washed in an Alconox solution and rinsed with Clean water prior to each use and between each well. Groundwater elevations were then calculated by subtracting the measured depths from the elevations for this round summarized in Table 1 surVeyed elevation. Groundwater sampling are and with previously collected elevation data for the Site in Table 2. Based on the May 10, 2001 measurements, groundwater flow at the Site is southeast at a steep gradient of 0.0180 ft/ft. EzC Remediation, LLC 26 I Pro_iec! Number 1801BK04 August 15. 2001 I 5.2' Monitoring' Well Purging and Sarnpling I All monitoring wells'were purged in order to obtain representative groundwater samples. A minimum of. three well casing volumes of groundwater were removed from each well prior tO sampling utilizing a battery-powered submersible pump. The casing volumes were calculated I by multiplying the height of the freestanding water column in the well by the cross-sectional area of the well casing. During purging, groundwater parameters of temperature, pH and conductivity were measured as Water was. pumped from the wells to verify sufficient purging and I stable physical parameter measurements on field instruments (see Appendix I for purge data sheets). The pump was decontaminated in a solution of Alconox and water and rinsed with clean water before each use. In the case of wells MW-9 and MW-10, the casings were bowed · iapproximately 20 feet bgs, So the pump could not be lowered beneath this depth. However, a plastic disposable bailer could be inserted to groundwater, which allowed each well to be purged by hand. IAfter purging, the wells were sampled using new disposable bailers. A groundwater sample from each well was decanted into four 40-mi volatile organic analysis (VOA) vials. Care was i taken to prevent headspace or bubbles in the vials, which were sealed with Teflon-lined lids. Samples were labeled and placed in an iced cooler maintained at 4" degrees Centigrade, accompanied with a Chain-of-Custody document for transport to the analytical laboratory. I 5.3 GrOundwater LaboratorY Analyses Halcyon Laboratories, Inc. (Certification #1920) of Bakersfield, California analyzed the Igroundwater samples for TPHg using EPA Method 8015M and BTEX'and fuel oxygenates using EPA Method 8260b. Appendix. J presents the laboratory analytical data sheets'and associated Chain-of-Custody.. I 5.4 Groundwater Analytical Results Laboratory analytical results for the Second Quarter 2001 are summarized in Table 1 and along I with historical data in Table 3. The results of these chemical analyses are summarized following: · Well MW-12 was not sampled due to the presence of approximately 30 inches of free- I product; · Significant concentrations of TPHg and BTEX were reported in the water samples from wells MW-l, MW-7, MW-8, MW-11R, 13, and MW-14; I · Benzene was reported at concentrations of 540 ~g/L (MW-11R) and 871 Izg/L (MW-14) (MW-14 is monitoring a lower portion of the aquifer); I · · The Method Detection Limits for benzene were increased due to necessary dilution of ~ these samples caused by high concentrations of total fuel hydrocarbon components; and · Fuel oxygenates including MTBE were reported as non-detect in all water samples I submitted for analysis. 5.5 Conclusions I Based on the data presented above, E2C makes the following conclusions: · The groundwater gradient at the Site is steep, and was calculated at 0.0180 ft/ft in a i southeasterly direction; i E2C Remediation, LLC 27 Prqiect Number 1801BK04 August 15. 2001 wells need redevelopment to clear fines from the casings 'and All existing monitoring redevelop the filter packs; · Significant concentrations of TPHg and BTEX compounds were reported in wells MW'l, MW-7, MW-8, MW-11R, MW, 13, and MW-14; · Free-product (approximately 30") was measured in Well MW-12; The downgradient monitoring wells, MW-13 and MW-14 have been mpacted by significant concentrations of TPHg and BTEX which indicates that the downgradient extent of the plume remains undefined; · The groundwater contaminant plume at the Site is long and narrow, which indicates that it is directly controlled by the steep groundwater gradient; · The lateral extent of the groundwater Plume is defined in the cross-gradient directions as indicated by the non-detect concentrations in wells MW-2. (upgradient), MW-4, MW-5 (east side-gradient), and MW-6, and MW-9 (west side-gradient); and · The presence of benzene at wells MW-l, MW-7, MW-8 and MW-13 cannot be excluded . of concentrations of TPHg. Aisc, the benzene detection due to the presence significant limit for these wells was 50 p.g/L. The water samples from these monitoring wells required dilution due to the elevated concentrations of TPHg and other BTEX benzene could be at concentrations from 0.5 p.g/L to 50 compounds, therefore, present pg/L. 5.6 Recommendations Based on the data presented above and the conclusions, E=C makes the following recommendations: · Obtain VE/AS remedial equipment'; obtain APCD permits and operate, remedial system, both on- and'off-site; · Install VES and AS wells off-site to mitigate and control free-product in the groundwater; · Install additional monitoring wells (shallow and deep) in the downgradient direction; · Perform quarterly groundwater monitoring and sampling and reporting for the duration of remedial operations plus a minimum of four quarters beyond system shut-down; and · Amend the analytical program to test for TPHg using EPA Method 8015M, BTEX using EPA Method 8260b and prior to site closure, analyze groundwater samples for the fuel oxygenates using EPA Method 8260b to verify non-detection of these compounds. ! ' EzC Remediation, LLC 28 I I pro_iect Number 1801BK04 A~fo_ust 15. 2001 I 6.0 REVISED REMEDIAL ACTION PLAN The Scope of Services to perform the recommended work as mandated by the RWQCB I consists of the following tasks: Task l Permitting I Task II Install Off-Site Groundwater Monitoring Wells, SVE Wells and Air Sparge Wells (includes collection of soil samples) Task III Install Off-Site Groundwater Remedial System Equipment I Task IV Install On-Site Groundwater Remedial System Equipment Task V Operate and Maintain On and Off-Site Soil and Groundwater Remedial System Task VI Quarterly Groundwater Monitoring and Sampling I Task VII Reporting i 6.1 Task I - Permitting After approval of the RAP by the RQWCB, necessary permits as required for the well installation and the installation and operation of SVE/AS equipment will be secured by E2C. These permits I include, but may not be limited to the following: · Drilling and Encroachment Permits from City of BakerSfield Fire Department, the City of Bakersfield Building Department, and/or Kern County Environmental Health; I Construction and Electrical permits from the City of Bakersfield where applicable; · · Authority-to-Construct and Permit-to-Operate permits from' the 'San Joaquin Valley Unified Air Pollution Control District (APCD). I Note: E2C observed that electrical power lines have already been installed in the area proposed for the remedial equipment, however, the power pole is only single phase' and I three phase will be required for the remedial' system. As such, a three-phase electrical hookup will require installation and permitting for such will be needed. 6.2 Task II - Install Off-Site Wells I Upon approval of this Workplan, E2C will install the following wells in the off-site areas: · Five (5) SVE Wells I · Five (5) Sparge Air Wells · Three (3) Shallow Groundwater Monitoring Wells I· Two (2) Deep Groundwater Monitoring Wells along Fig Street The SVE wells will be designated VE-4 through VE-8. The air sparge wells will be designated I AS-4 through AS-8. The shallow groundwater monitoring wells will be designated MW-15S, MW-16S, and MW-17S. The deep groundwater monitoring wells along Fig Street will be designated MW-15D and MW-17D. Figure 12 depicts locations and estimated areas of I influence for the SVE wells. Figure 13 depicts locations and estimated areas of influence for the · AS wells. Figure 14 depicts locations of the proposed groundwater monitoring wells. E2C anticipates installing the wells in the Third Quarter of 2001. I Well locations have been selected based on geology and hydrogeology of the Site. In addition, the chemical concentrations in groundwater samples at existing wells were considered in the i location selection' process. i E2C Remediation, LLC 2~ Project Number 1801BK04 August 15. 2001 Prior t© installing the wells at offsite locations, E2C will obtain written permission from the appropriate property owner(s) to install the wells. In anticipation of Workplan approval, E2C has requested owner off-site permissions. 6,2.1 Soft Borings and Soil Sampling A soil boring will be advanced to the desired depth at each well (monitoring, SVE or sparge) location. Each soil boring will be advanced using a truck mounted hollow-stem auger drilling rig, conventional equipment for environmental site assessments. Soil samples will be collected at 5-foot intervals from the surface to total depth. Samples will be collected using a split-spoon sampler containing three brass or stainless steel sleeves. Drilling operations, soil sampling and field monitoring for the presence of hydrocarbons will be performed by an experienced environmental geologist under the supervision of a California Registered Geologist. A hydrogen flame ionization detector (FID) will be used during the drilling process to detect the presence of hydrocarbons (note: these are only qualitative tests not to be construed to represent a certified laboratory analysis). Sample lithology and pertinent drilling information will be described and recorded on field boring logs. All soil samples will be labeled, capped and placed in a cooler with ice at a temperature of 4° C for possible analysis. A maximum of five (5) cores from the boring will be submitted for chemical analysis. Samples for analyses will be selected based on the field screening measurements. These samples will be transferred to a California State Certified laboratory under chain of custody control procedures. Soil samples will be chemically analyzed for the following fuel hydrocarbon compounds: · BTEX using EPA Method 8260b; · TPHg using EPA Method 8015M; · MTBE using EPA Method 8260b; and · The detection limits will be 0.005 milligrams per kilogram (mg/Kg) (equivalent to parts per million) for BTEX compounds, 50 mg/Kg for TPHg, and 0.05 mg/kg for MTBE. 6.2.2 Groundwater Monitoring Well Installations be discussed in Section 3.2 above. Upon reaching a A boring for each well will advanced as total depth of approximately 60 feet bgs,,the borings for MW-15S, MW-16, and MW-17S will be converted into groundwater mOnitoring wells. Each 'well will be constructed with 2-inch with 30 feet of at the bottom followed by blank casing to the Schedule 40 PVC casing screen surface. Filter pack sand will be emplaced by gravity feed in the annular space from the bottom to a point at least two feet above the screened interval to be followed by hydrated bentonite surface seal the filter pack. Neat cement-bentonite slurry will fill the annular space chips to the to the surface. Each wellhead will be equipped With a locking cap and a traffic-rated box set in cement slightly above grade to complete the installation (where appropriate, an above ground stovepipe may be used). Wells MW-15D and MW-17D will be constructed un a similar manner, except the boring will be advanced to approximately 13 feet below the bottom of the screen interval for the' adjoining shallow well (MW-15S or MW-17S), then the well will be constructed with 10 feet of screen at the bottom followed by blank to the surface. Filter pack sand will then be emplaced to two (2), E2C Remediation, LLC 3u Project Number i801BK04 August 15. 2001 interval followed bentonite to the of the filter interval feet above the screen by hydrated top pack in the adjacent shallow well. Neat-cement grout will then be used to complete the seal to the surface. The wells will be immediately developed to remove fines and settle the filter pack. This will be accomplished using a surge block followed by pumping using a submersible pump. At least 24 hours after development a submersible will be used to a minimum of three well pump purge volumes. Periodically during purging the parameters pH, temperature, and conductivity will be measured as another means to ensure that a representative sample of the aquifer is obtained for chemical analysis. The aquifer will be considered stabilized if three consecutive measurements are within 10% of previous measurements. Groundwater at the new wells will be sampled for the first time during the Fourth Quarter 2001 in conjunction with sampling of the current existing wells. The wells will be purged and grOundwater will be sampled as discussed above in Section 5.2. The groundwater samples will be analyzed at Halcyon Analytical Laboratories in accordance with State of California guidelines and EPA protocols. The samples will be analyzed for the volatile aromatic constituents (BTEX) and MTBE using EPA Method 8260b and TPHg using Method 8015M, respectively. The detection limits for BTEX compounds, MTBE, and TPHg in groundwater will be 0.5lzg/L, 5 tzg/L, and 50 Izg/L, respectively. 6.2.3 Installation of Off-Site Soil Vapor Extraction Wells Vapor extraction in soils (SVE) is a recognized technology for the removal of volatile hydrocarbons such as gasoline from the vadose soil zone. This method has also been shown to be effective in the removal of free-product when completed just above the free- product/capillary fringe interface. Wells screened through the contaminated interval into the capillary fringe are installed and connected at the surface to a blower. A vacuum is created and soil gases are drawn to the wells carrying hydrocarbon volatiles, which are stripped from the soil. At the surface, the hydrocarbons are thermally destroyed or adsorbed in canisters of granulated activated carbon to prevent emissions to the atmosphere. E2C proposes to 'install five (5) SVE wells off-site as shown on Figure 12 (wells on-site have already been installed). The five new SVE wells in conjunction with one of the existing wells will be utilized for the soil remedial operations. During installation of the remedial system, well MW- 11 will also be used as a VE point. Figure 12 depicts locations of the SVE wells and their anticipated areas of influence with a conservatively estimated radius of influence of 50 feet for each SVE well. Each SVE well will be constructed in the same general manner as a groundwater monitoring well. Each well will be constructed with 2-inch Schedule 40 PVC casing. Each well will be screened from approximately 10 feet bgs to 2 feet above (approximately 37 bgs) feet the highest occurrence level of groundwater at approximately 39 feet bgs. Filter pack sand will be emplaced by gravity feed in the annular space from the bottom to a point at least two feet above the screened interval to be followed by hydrated chip's approximately bentonite to 2 feet bgs to seal the filter pack. Each wellhead will be equipped such that they can be manifolded into the SVE remediation system (see Figure 14 for typical SVE well). E2C Remediation, LLC 31 I 'F)rc_iect Number 1801BK04 A~C/ust 15. 2001 of Groundwater Air Wells 6.2.4 Installation Sparging Air sParging (AS) is a developed remedial technique designed for cleanup of groundwater impacted with volatile hYdrocarbons. It can be used in conjunction with vapor extraction and therefore, if conditions at' the site are favorable, a properly engineered system can effectively cleanup both impacted soils and groundwater. To be effective, sparging should only be used where the water level occurs below 5 feet, the aquifer is unconfined, the contaminant is volatile and not too soluble (such as gasoline) and the soils are relatively porous and permeable. With air sparging, air is introduced into the saturated zone via wells, which are usually screened. with a. short one- to three-foot.interval. Air bubbles travel upwards vertically, but also spread horizontally partly in response to the naturally greater horizontal permeability of sedimentary deposits. It is advisable to set the injection point some distance, typically 5 to 20 feet below the water table to increase the radius of influence of the sparging point. Radii of influence from 5 to 40 feet in coarse sediments have been observed. The radius of influence is evaluated bY monitoring VES wells for increased VOC concentrations, monitoring dissolved oxygen content at groundwater monitoring wells, checking for localized water table mounding above sparge points, and modifications of the potentiometric surface across the site. Note: Air sparge wells located within areas containing free-product will nit be utilized until free-product is reduced to a sheen The typical air sparge system consists of an oil-free air compressor rated for continuous operation, manifolded to one or more sparging supplied wells. Air is to the wells through metal pipe or rubber hose. A pressure gauge, flow control valve and regulator are provided at each sparging well to.measure and control the flow of air. Each sparge point consists of one to two- A is set approximately 20 feet into the water column, or inch PVC casing. microporous screen near the bottom of the water-bearing materials to enhance radius of influence. The screened interval in each sparge well is encased by a sand filter pack. A seal of bentonite or grout is in the annular to the surface (see Figure 15 for typical AS well). emplaced space 6.2.5 Resurvey of Monitoring Wells After installation of the new monitoring wells, all existing and new wells at the Site will be surveyed to meet AB 2886 requirements. Top of casings will be surveyed for longitude and ~atitude to sub-meter accuracy. In addition, the tops of casings will be surveyed to an accuracy of 0.01 foot for elevation control based on the Benchmark at the canal abutment west of the Site. 6.3 Task III - Install Off-Site Soil and Groundwater Remedial System Previously, E2C proposed installing a horizontal boring under Brundage Lane and linking off-site VE/AS wells to a main equipment compound in the fenced area of the Mr. Fast Site Proper. the extent of the plume and the number of VE and AS wells with Based on groundwater associated trenching and piping that will be required, this plan is now deemed not feasible. The reasons for this are discussed following. The length of the contaminant plume as defined to date is approximately greater than 400 feet (see Figures 4 and 5) with the larger portion underlying off-site properties to the south of the Site At this time, five (5) vapor extraction wells and five (5) air sparging wells are proper. proposed to be placed in the off-site properties (see Figure 8). E~C Remediation, LLC 32 Project Number 1801BK04 AF_~ust 15. 2001 6.3.1 Comparison of One Remedial System versus Two Remedial Systems Each VE well and AS well will require a separate piping run. As such, 10 pipes will be required at this time, 5 VE and 5 AS. The closest VE (VE-4) an AS (AS-4) wells to the on-site equipment compound would require approximately 270 feet of piping run each. The furthermost VE (VE-7) and AS (AS-8) wells would require approximately 520 feet of piping run each. The other VE and AS wells will require piping runs pf distances between those numbers. VE Piping Friction Losses VE piping will consist of-2-inch internal diameter (ID) Schedule 40 PVC. Five (5) VE wells will be operable, which yields 50 CFM per well. Friction losses approximately will be O.O4 inches of water per foot of tubing (see graph in Appendix P),.which is equitable to 0.04 CFM. Thus, for the shortest piping run of 270 feet, friction losses of 10.8 CFM can be expected, with 22.8 CFM friction loss on the longest run of 570 feet, not including fitting losses. So, for longer piPing runs, up to 1/2 of the flow may be lost. AS Piping Friction Losses AS piping will consist of 1/2-inch ID galvanized steel. The air sparge unit will be run at 4 to 8 CFM, say an average of 6 CFM. For the minimum run of 270 feet from AS-4 to the on-site compound, losses of approximately 0.6 CFM per foot can be expected (see graph in Appendix P), which would yield a total loss of 162 CFM, not including fitting losses, which is two orders of magnitude greater than the anticipated flow of the system. Even doubling the air sparge flow could not ,compensate for the friction losses. Thus, these losses preclude long piping runs for the air sparge operation. The placement of a second off-site centralized system would negate a large portion of the friction losses, thus allowing for a more efficient cleanup operation. of One Two Remedial Systems 6.3.2 Cost Comparison versus As per a verbal request from the RWQCB (oral communication September 7, 2001), a, cost comparison of one (1) on-site system versus two (2) systems, one on-site and one (1) off-site, is also included. Based on the cost comparison a'nalysis, the two-system scenario will cost approximately $2,382 more than the one-system scenario. This includes the costs for installation and operation for one year. Comparison Conclusions Based on the data presented above in Section 6.3.1, the one-system scenario is not feasible due to piping friction losses. Based on the data presented in Section 6.3,2 above, the cost to scenario for one is comparable to the one-system install and operate the two-system year scenario. Comparison Recommendations Based on the conclusions above, E2C recommends use of the two-system scenario for the Mr. Fast Site. ! E2C Remediation LLC ! Project Number 1801BK04 August 15. 2001 6.3.3 Trenching and Piping On-Site On-Site trenching and piping is completed. Off-Site Underground piping for SVE and AS wells will rUn concurrently in a single trench to the location of the off-site remediation system. Trenches will be constructed in the following manner: · A backhoe will be used to excavate a 3-foot wide by 2~foot deep trench from each AS and VE well to a main line (see Figures 11 and 12 for approximate routes). For those wells offsite across Brundage Lane, piping will be routed through a directional boring that will be directionally bored beneath Brundage Lane; · The trench will contain 6 inches of sand as base that is compacted to approximately 90% relative density; · Piping will be laid on the base and additional sand will be added to encase the Piping; · Class II base will then be placed to 90% relative density to ground surface; and · · An asphalt cap will then be placed and rolled using a water-filled drum roller to the top of the existing concrete and/or asphalt surface. SVE piping will consist of color-coded 2-inch ID Schedule 40 PVC. AS piping will consist of pressure rated '1/2-inch diameter tubing, SVE piping will be separate from AS piping. Each AS. and SVE well will be piped to the equipment area individually. Each Piping run will be manifolded above ground at the equipment area. A control valve will be installed on the manifold for each well so each well can be adjusted for flow rates on an individual basis. All manifolding, electrical and plumbing on- and off-site will be performed in accordance with any and all local building ordinances and codes. Two small sheet metal sheds will be constructed, one on-site 'and one off-site, to protect the gauges, valves, compressor and electrical equipment from the elements at each location. Each manifold will be connected to the respective remedial treatment equipment using appropriate hoses and connectors. 6.3.4 Electrical Supply The electrical service requirements for the SVE system and groundwater sparge system will be supplied by the installation of two utility power poles, one on-site and one off-site. A service mounted each and wired with separate circuit breakers for individual panel will be on pole circuits as needed. The supply service at each pole will require three-phase of 240 volts at 200 amps. The individual remediation systems will be hard wired to the respective service panels breaker circuits manufacturers requirements. through appropriate per 6.3.5 Remediation Equipment Each remedial area (on-site and off-site) will house a thermal/catalytic oxidizer unit consisting of a Solleco Industries Model 300 TCAT internal Thermal Oxidizer to extract vapor from the wells at 300 cfm, up to 15 inches Hg vacuum and to run on liquid propane. The unit's minimum operating temperature is 600 deg. F in catalytic mode and 1,400 deg. F in thermal mode. This. temperature is set to ensure vapor oxidation at reasonable electrical cost. Furthermore, the unit has a catalytic module to complete the oxidation process. The unit is equipped with a ' E2C Remediation, LLC 34 Project Number 1801BK04 A~gust 15. 2001 regenerative type vapor extraction blower. For improved reliability and safety, the valve controls, actuators, and components are controlled by relay logic. The Solleco 300 is equipped with a water knock-out pot, automatic air dilution capability, and a noise reducing muffler. This proposed piece of ·equipment is designed to shut a system down and lock OUt in the event of malfunction. The various safety features 'include high and Iow oxidizer bed temperatures, high and Iow blower pressure, high intake LEL, high and Iow air pressure, high and Iow exhaust temperature, and water knockout sensor. malfunction Groundwater air sparge equipment will consist of an "oil-free" rotary-screw 10-horsepower Rand regulator, needle-valve flow controllers and microporous Ingersol Compressor, pressure sparge points. All electrical, and plumbing will be performed in accordance with any and all City of manifolding, Bakersfield and/or County of Kern building ordinances and codes, The application for the permit to construct/operate, including construction details will be prepared and submitted after this plan has been approved. 6.3.6 ISO'GENTM In general an electrolysis unit is positioned downhole and water is disassociated into hydrogen and oxygen, thus increasing the dissolved oxygen (DO) content in the groundwater, thuS enhancing bio-degradation. Note: The unit is equipped with a carbon scrubber for the small quantity of hydrogen gas liberated in the process. Increased DO enhances degradation of hydrocarbons indirectly by providing petroleum-degrading microbes with the electron acceptor (DO) that they need to thrive. Using this method in conjunction with the existing system should enhance cleanup at the Site. The brochure describing the ISO-GENTM system was submitted to the RWQCB on July 20, 2001 (E2C, 2001). E2C proposes installing the ISO-GENTM System in two areas as follows: · One set along south edge of Mr. Fast property in wells MW-3 and MW-8; and · The second set in well MW-14 in Berneta Avenue and in well MW-12 after free-product is reduced to a sheen at that well. Note: A set may be placed in the new wells along Fig Street if deemed necessary at a later date. 6.4 Task IV - Operation and Maintenance of Soil and Groundwater Remedial Systems E2C professional staff, experienced in SVE/GASS technology, will conduct operation and maintenance (O & M) of the VES Units to ensure efficient remediation Equipment of the Site. operating parameters will be monitored by E2C on-site inspections. It is E2C's experience, from previous SVE/GASS, that maintenance schedules will be daily inspectiOns for the first 10 days; 2 to.3 days per week for the next 20 days; and weekly inspection thereafter. Maintenance and schedules will ultimately comply with the permit conditions set by the SJVUAPCD. of the is to include all materials and supplies The operations and maintenance systems necessary to conduct normal operational activities such as field screening, systems checks and adjustments, and regular lubrication and maintenance. The VE/AS system proposed will be with Flow, Stack Chamber Temperature, and Pre-Heat equipped LEL, Temperature, Temperature measurement devices and are recorded every one (1) minute on a chart recorder. E~C Remediation, LLC 35 I project Number 1801BK04 August 15. 2001 6.5 Task V- Quarterly MOnitoring and Sampling Groundwater sampling will be performed on a quarterly basis. After one year, the sampling schedule will be evaluated and revised as necessary. Groundwater monitoring, purging and sampling will be collected as specified in above in Sections 5.1 and 5.2. All water samples will be collected, stored, and sealed in appropriate containers and recorded on chain-of-custody document pending transport to a state-certified laboratory. A State of California-certified analytical laboratory will analyze the samples fOr the following compounds by the appropriate EPA Method: · TPHg using EPA Method 8015; · TPHd using EPA Method 8015M; and · BTEX and MTBE using EPA'Method 8021b. All samples will be collected, stored, and sealed in approPriate containers and recorded on chain-of-custody documents pending transport to a state-certified laboratory. Sampling, sealing and transporting procedures will be documented in the CAP. 6. 6 Reporting Reports will consist of the following: 1) Report of Findings in Combination with finalized Remedial Action Plan; and 2) Quarterly Groundwater Monitoring and Remediation Status Reports. 6.6.1 Report of Findings and Finalized Remedial Action Plan A report will be prepared that describes the activities performed for the additional groundwater characterization, including results, conclusions, and recommendations. This report will also include a finalized remedial action plan for additions to the remedial systems, both on- and off- site, if needed. 6.6.2 Quarterly Groundwater Monitoring and Remediation Status Reports On a quarterly basis, a report will be prepared by the last day of the next month following each quarter and will contain, at a minimum, the following: · Tabulated results of all previous and to date investigations; · Groundwater elevation and contamination contour maps; · Site map clearly indicating the areal extent of contamination plumes; · A map showing all sensitive receptors and a brief description of the receptor, including its distance and direction from the Site; · Compliance with other agency's requirements; · A summary of analytical data to date, equipment records, daily/weekly inspection records, and a discussion of remedial progress; and · In addition, the report will contain a conclusions 'and recommendations section clearly indicating what further actions, if any, are required. The report will be prepared under the supervision of, reviewed by, and certified by a State of California Registered Geologist. E~C Remediation, LLC 3t~ I Project Number 1801BK04 August 15. 2001 2',0 QUALITY ASSURANCE PLAN This section describes field and analytical quality-assurance procedures to be followed during the investigation and remediation. 7.1 Sample Collection and Handling ProtOcol Proper sample collection and handling are essential to assure quality of data obtained from a sample. Each sample, therefore, will be collected in a plastic tube, preserved correctly for the intended analysis and stored for no longer than permissible holding time prior to analysis. Protocol to be applied in this project was described earlier. 7.2 Protocol for Sample Identification and Chain-of-Custody Documentation Sample identification and Chain-of-Custody procedures are designed to assure sample quality and to document sample possession from the time it is collected to the time of its ultimate disposal. The container for each sample submitted for analySis will have a label affixed with the identifying number or the number will be inscribed directly on the container. The analytical laboratory will assign a separate sample number unique to that sample for internal sample coordination and identification. A description of the sample including the sample number and other pertinent information regarding its collection and/or geologic significance will be written in field notes and/or a geologic boring log being prepared by the site geologist. These field documents will be kept in a permanent project file. All samples will be analyzed by a state certified laboratory for the analyses requested. A properly completed Chain-of-Custody Form will be submitted to the analytical laboratory along with sample. The laboratory's assigned number will be properly entered on the form. A quality control officer at the lab will verify integrity of sample submitted, proper sample volume, correctness of containers used, and properly executed Chain-of-Custody Form. Pertinent information will be entered intoa log book kept by the laboratory. 7.3 Analytical Quality Assurance In addition to routine calibration of analytical instruments with standards and blanks, the analyst is required to run duplicates and spikes on 10 percent of analyses to assure an added measure of reliability and precision. Accuracy is verified through the following: 1. U.S. EPA and State certification of results; 2. Participation in inter-laboratory round robin program; 3. The quality control officer on a weekly basis submits "Blind" samples for analysis. These are prepared from National BUreau of Standards specifications of EPA reference standards; and 4. Verification of results with an alternative method. 8,0 OFFSITE PROPERTY OWNER PERMISSION Adjacent offsite property owners have been identified. Table D-1 in Appendix D summarizes ' the data.. The figure in Appendix D depicts property boundaries with Assessor Parcel Numbers, which are keyed to the table.' E2C is in the process of obtaining permission from the off-site owners to install the remedial system. As of August 10, 2001, permission had been received E~C Remediation, LLG I Pro_ieet Number 1801BK04 August 15. 2001 from the owner of Parcel 011-048-06, the lot at the corner of Brundage Lane and Berneta -- Avenue. Note: The Parcel 011-048-06 owner is also being requested to provide access for i placement of the off-site remedial system on his property. 9.0 SITE SAFETY PLAN Appendix E contains a Site Safety Plan that complies with Worker Right to Know Regulations · and California Code of Regulations Title 2. I 10.0 LIMITATIONS AND REPORT CERTIFICATION E2C has prepared this Plan in accordance with generally accepted standards of care existing in · California at this time. It should be recognized that definition and evaluation of geologic ~ conditions is a difficult and inexact science. Judgments leading to conclusions and recommendations are generally made w th mited.knowledge of surface conditions present. No i Warranty expressed or implied is made. This report has been prepared by E2C, Inc. under the professional supervision of the registered · professional whose seal and signature appear herein. The conclusions of this report are based solely on the Scope of Services outlined and the sources of information referenced in this report. Any additional information that becomes available concerning the 'Site shoUld be · submitted to E2C so that our conclusions may be reviewed and modified, if necessary. This report was prepared for the sole use of Mr. & Mrs. Ki Ch'u Yi and/or agent(s). I~red By: ,/?. '-'~ Revif~:~ed By: ~lwin, R.G. #4779· ~g. Expires 11/30/02 ncipal Hydrogeologist I ! ! E~C Remediation, LL C 3u I Project Number 1801BK04 August 15. 2001 11.0 REFERENCES (AEC, 2000a) Advanced EnvirOnmental Concepts, Inc., February 2000, Continuing Soil and Groundwater Assessment Report at Mr. Fast Gas & Liquors, 600 Brundage Lane, County of Kern, Bakersfield, California (AEC, 2000b) Advanced EnvirOnmental Concepts, Inc., July 2000, Continuing Soil and Groundwater Assessment Report at Mr. Fast Gas & Liquors, 600 Brundage-Lane, County of Kern, Bakersfield, California (E2C, 2OOla) E2C, Inc., January 24, 2001, Fourth Quarter 2000 Groundwater Monitoring Report & Remedial Action Plan, Mr. Fast Service Station, 600 Brundage Lane, Bakersfield, California (E2C, 2001b) E2C, Inc., January 24, 2001, First Quarter2001 Groundwater Monitoring Report, Mr. Fast Service Station, 600 Brundage Lane, Bakersfield, California (E~C, 2001c) E2C, Inc., July 26, 2001, Request for Approval of Off-Site Remediation & Request for Approval to Install Additional Groundwater Monitoring Wells, Underground Storage Tank Release, Mr. Fast Service Station, 600 Brundage Lane, Bakersfield, Kern county (Grisanti, 1992) Grisanti & Associates, Inc., February 1992, Transaction Environmental Site Assessment, Mr. Fast #6 Liquor and Deli Facility, 600 Brundage Lane, County of Kern, Bakersfield, Cafifomia (RWQCB, 2000a) California Regional Water Quality Control Board - Central Valley Region, 17 November 2000, Underground Storage Tank Release, Mr. Fast Service Station, 600 Brundage Lane, Bakersfield, California (RWQCB Case No. 5T15000619) (RWQCB, 2000b) California Regional Water Quality Control Board - Central Valley Region, 29 November 2000, Underground'Storage Tank Release, Mr. Fast Service Station, 600 Brundage Lane, Bakersfield, California (RWQCB Case No. 5T15000619) (RWQCB, 2001) California Regional Water Quality Control Board - Central Valley Region, 16 January 2001, Underground Storage Tank Release, Mr. Fast Service Station, 600 Brundage Lane, Bakersfield, California. (RWQCB Case No. 5T15000619) (RWQCB, 2001C) California Regional Water Quality Control Board - Central Valley Region, 26 February 2001, Underground Storage Tank Release, Mr. Fast Service Station, 600 Brundage Lane, Bakersfield, California (RWQCB Case No. 5T15000619) ,! i E2C Remediation, LLC 39 I Project Number 1801BK04 , August 15. 200i I (RWQCB, 2001di California Regional Water Quality Control Board - Central Valley Region, 20 April 2001, Underground Storage Tank Release, Mr. Fast Service Station, 600 Brundage Lane, Bakersfield, California (RWQCB Case No. 5T15000619) (WEECO, 1993) Western Environmental Engineers Company, July 1993, Site Assessment I Report, Mr. Fast Service Station, 600 Brundage Lane, BakerSfield, Cafifomia · iE2C Remediat!on., LLC 40 Pro_iect Number 1801BK04 · August 15. 2001 FIGURES Figure 1 Site Location Map Figure 2 Site Plan Figure 3 Second Quarter 2001 Groundwater Gradient Plot Figure 4 Second Quarter 2001 Benzene Isoconcentration Plot Figure 6 Second Quarter 2001 TPHg Isoconcentration Plot Figure 7 Cross-Section A-A' Figure 8AProposed SVE and AS Wells with Horizontal Boring Figure 8BProposed SVE and AS Wells with Two Remedial Systems Figure 9 Proposed Groundwater Monitoring Wells E2C Remediation, LLC Figures BRUNDAGE err~ce I I I I WHITE LANE I E2C Remediation, LLC MR. FAST SERVICE STATION FIGURE 600 BRUNDAGE LANE 5300 Woodmere Dr., Suite 1.05 BAKERSFIELD, CALIFORNIA 1 I Bakersfield, California 93313 Telephone: (661) 831-6906 SITE LOCATION MAP Facsimile: (661) 831-6234 ! , ~,~o~, II ' Current Gas Pumps ~., ~~ ' II ~ , I D Old Pumps /~~ ~ Il ~ I- ~U~L~ ~ = ~u II ~w-~ w-~ ~w~ I +~0~.41 BM From MW-~ ~2 ~. Wost and 22 ~. South i BRUNDAGE ~NE MW-9 MW-10 MW-7 I MW-12 I "~ MW-11R '~ ~ MW-11 /- LEGEND "~ E I MW-1 I~ · Groundwater Monitoring Well Location I MW-14 MW-13 MW-14 Deep Groundwater Monitoring Well Location ~ VE-1 V Vapor Extraction Well Location A$-1 [] Air Sparge Well I Location I E2C Remediation~[--~J MR.600 FAST BRUNDAGE SERVICE STATION LANE FIGURE 5300 Woodmere Dr., Suite 105 II BAKERSFIELD, CA. I Bakersfield, California 93313 I! 2 Telephone: (661) 831-6906 II Facsimile: (66i) 831-6234 II SITE PLAN ! MW-2 + I Mr. Fast Gasl ! & Liquor I Current Gas I VE-2 V MW-1 [] Old Pumps '".~ o~'--~.~o I-- I SCALE 1"= 50' I MW-4 I I I MW-S VE-3 ' AS-2 AS-3 I +a96.41 BM From MW-6 92 ff. West and 22 It. South I~ ~ ' AGE LANE MW-12 ~Groundwater Monitoring Well Location I MW- 14 ~ Deep Groundwater Monitoring Well Location I ~' Vapor Extraction 'MW'13 MW-14 X AS'Iwell L°cati°n ~'~~ I [] Air Sparge Well Location ~' Groundwater Elevation i ~ Contour, querued where unknown MR. FAST SERVICE STATION FIGURE E2C Remediation, LLC 600 BRUNDAGE LANE 5300 Woodmere Dr., Suite 105 BAKERSFIELD, CA. Bakersfield, California 93313 3 Telephone: (661) 831-6906 SECOND QUARTER 2001 Facsimile: (661) 831-6234 GROUNDWATER GRADIENT PLOT MW-2 ~ I Mr. Fast Gasl AS- . +~96,41 BM From MW-6 I %,. ~, ~ ~,. ~u~% ~ ......... ~ ..... BRUNDAGE LANE ~ Froo- ~roduct . ~ LEGEND ~ ~ G~ti~ M onitorin g ~ Deep Groundwater T Monitoring Well Location VE-1 ~ Vapor Extraction ~ MW-13 MW-14 -- Well Location AS-1 ~ Air Sparge Well ~ocation onzono Isoconcontration . Contour, queriedwhereunknown ~ ~2c ~emedi~tio~, LLC MR. FAST SERVICE. STATION FIGURE 600 BRUNDAGE LANE 5300 Woodmere Dr., Suite 105 BAKERSFIELD, CA. Bakersfield, California 93313 4 Telephone: (661) 831-6906 SECOND QUARTER 2001 Facsimile: (661) 831-6234 BENZENE ISOCONCENTRATION PLOT MW-2 ' .~ rMr. Fast Gas1 . ~'~--~ T , & Licluor Current Gas // I / CALE 1"= 5~' ~w_6 + Mw-3 ~\1-;~1 .-~.II ~ + .~. MW-8 VE'~ I<~Ul~ II I : : I +~96.41BM From ~6 ft. West and 22 fC ~ .~ .......... ~ __ __1 ..... ~ BRUNDAGE LANE + + ' ~ ~ ,W-lO LEGEND ~ ~ Groundwate~ Monitoring Well Location 14 ~ Deep Groundwater Monitoring Well Location ~1VapOr ExtractiOn AS-1 Well Location ~MW~ ~ AirSpargeWeli. Location g soconcen ra ion Contour, queried where unknown I E?C MR. FAST SERVICE STATION FIGURE Remediation, LLC 600 BRUNDAGE LANE 5300 W0odmere Dr., Suite 105 BAKERSFIELD, CA. i Bakersfield, California 93313 5 · Telephone: (661) 831-6906 SECOND QUARTER 2001 ' Facsimile: (661) 831-6234 TPHg ISOCONCENTRATION PLOT I MW-2 ~ I Mr. Fast Gasl I I I · Current Gas MW-3 AS-2 D +396.41 BM From MW-6 92 ft. West and 22 ft. South ....... ~ ...... ~---, BRU E MW-12 Q~ /" LEGEND '% me MW-1 . Groundwater Monitoring · Well Location MW- 14 Deep Groundwater W-14 Monitoring Well Location VE-1 ~' Vapor Extraction A,f Well Location AS-1 [] Air Sparge Well ~.. Location ~./ , I E2C Remediation, LLC II MR. FAST SERVICE STATION FIGURE 600 BRUNDAGE LANE 5300. Woodmere Dr., Suite 105 II BAKERSFIELD, CA. I Bakersfield, California 93313 · 6 Telephone: (661)831-6906 CROSS-SECTION TRANSECTS · Facsimile: (661) 831-6234 ' ! FENCED REMEDI,~ . co~S/o.~o uw-2 ~ MR. FAST GAS & J k I ' LIQUOR I N ·' I VE-2 Current Gas Pumps I I ¥ I-I ? o" ' SCALE: 1" = 40 feet, I ' Old Pumps , I--- , I I ~, ~,~, _ MW-4 Old Pumps j ~ ,,._ " '~ MW-5 Mw-6 ]~MW-3 V- MW-8 VAULT From MW-6 92 ft. West. 22 ft. South .c:_ c- .}- > I:~ · BRUNDAGE LANE o,10 MW-10 ~ VE-4 VALJ_T LEGEND GroundwaterMonitoring I I I ~1[ We,Location O11-048-14~ O11-048-06 Location a } LU ~ A Proposed Vapor """' '-"'"" ~ ! .... Extracti°nWelJ L°cati°n J V~ I~ MW-12 D Proposed Air Sparge ~ Well Location i MW-I 1 I k,,,. j MW-12 and MW-11 to Serve as VE Wells I APN 011-048-15 AS-8 D I ......... 'MW-14 ]~. E2C Remedia¢ion, LLC MR. FAST SERVICE STATION FIGURE 600 BRUNDAGE LANE 5300 Woodmere Dr., Suite 105 BAKERSFIELD, CA. Bakersfield, California 93313 Telephone: (661)831-6906 8A Facsimile: (661) 831-6234 SITE PLAN SHOWING PROPOSED WELLS WITH HORIZONTAL BORING(S) ~ COMPOUND ~ ~ MR. FAST GAS & I II II i ' VE-2~,VE-1AS°I '///~'~ C;'~u r re n~' G"-as P u m p s Jr~ ~ '' ' I SCALE: ~"= 40 feet Old Pumps '~ ~ AS-2 ~.~ ~S-3I I 02 ~. Wost, 22 ~. South · · BRUNDAGE LANE MW-10 ' ~ AS'4 ~MW'7 ~ VE-5 ~ AS-5 ~ ~ [ WellLocation I~ Vapor ExtractionWell I' IA ~sl~ I ~ :~ lA Lo~o~ ~ I I U I AS-~ I ~ ~ }~ ProposedVapor-- -- --I-- -- --'~--~ ~' /ExtractiOnwell LOcatiOn I ME'6~ l ~ MW-12 ~ / ~ ~ Well Location ~ I MW-12 and MW-11to Se~e as VE Wells ; /¢ A~ ~ /~ ~ ~ ~ ~ ~ MW-~4 ~ E2C ~e~e~t~o~, ~C MR. FAST SERVICE STATION FIGURE ~oo..uN.A~ ~AN~ ~.,ep,o.~: <~ ~1-,~0~ 8 B Facsimile: (661) 831-6234 SITE PLAN SHOWING PROPOSED WELLS WITH OFF-SITE EQUIPMENT APN# 010-031-05" T' Str. eet IMr'Fastservice i II ~2 I Station I I I ~ K~w'" ~JJ Brundage ~ Lane BRUNDAGE LANE SCALE 1- = ~ MW,t2 MW-1 IR 40 80 ~ ' O11-048-15 ' o~-o4~- ~ O[-WAY ' ~roposod Shallow Monitorin~ ~roposod Shallow Monitorin~ Woll I E2C Remediation, LLC MR. FAST· SERVICE STATION FIGURE · 600 BRUNDAGE LANE 5300 Woodmere Dr., Suite 105 BAKERSFIELD, CA. · 1 Bakersfield, California 93313 9 Telephone: (661) 831-6906 PROPOSED MONITORING WELLS Facsimile: (661) 831-6234 ! August 15. 2001, project Number 1801BK04 TABLES Table 1 Second Quarter 2001 Groundwater Monitoring Data Table 2 Historical Groundwater Elevation Data Table 3 Historical Groundwater Analytical Results Table 4 Summary of Soil Analytical Results - April. 2001 Table 5 Well Distance Matrix Table 6 Remedial System Cost Comparison Table:~ E~C Remediation, LLC Project Number 1801BK04 August 15, 2001 TABLE 1 SECOND QUARTER 2001 GROUNDWATER MONITORING RESULTS Mr. Fast Service Station 600 Brundage Lane Bakersfield, California 6/4/01 DEPTH TO TOC GW WELL ID WATER ELEV. ELEV. (feet BTOC) (feet MSL1 (feet MSL) MW-1 42.15 394.03 351.88 MW-2 41.82 395.01 353.19 MW,3 42.82' 394.64 351.82 mw3 dup MW-4 43.08 394.14 351.06 tvlW-5 43.98 393.43 349.45 MW-6. 41.30 393.76 352.46 MW-7 44.52 393.63 349.11 MW-8 43.36 393.95. 350.59 MW-9 43.52 394.05 350.53 MW-10 45.34 392.91 347.57 MW-11R 54.76 391.22 336.46 MW-12 NM 392.01 NM MW-13 58.10 391.65 333.55 MW-14 69.88 391.87 321.99 Notes: Duplicate of MW-3 labeled as MW-15 on Chain-of-Custody F-P = Free-Product Thickness < = Not detected at or above Method Detecti'on Limit as indicated by number B = Benzene BTOC = Below Top of Casing DIPE = Diisopropyl Ether E = Ethylbenzene ETBE = Ethyl Tertiary Butyl Ether GW = Groundwater MTBE = Methy Tertiary Butyl Ether NSFP = Not Sampled, free-product present = Toluene TBA = Tertiary Butyl Alcohol TOC = Top of Casing TPHd = Total Petroleum Hydrocarbons as diesel TPHg = Total Petroleum Hydrocarbons as gasoline × = Total Xylenes E2C Remediation, LLC T1-1 I Project Number 1801BK04 August 15, 2001 . TABLE 2 I SUMMARY OF HISTORICAL GROUNDWATER ELEVATION DATA Mr. FaSt ServiCe Station 600 Brundage Lane I Bakersfield, California TOC ELEVATION TOTAL DEPTH DEPTH TO GROUNDWATER I WELL ID DATE GROUNDWATER ELEVATION (feet MSL) (feet BTOC) (feet BTOC) (feet MSL) i 7-20-95 N/A N/A N/A N/A 4-5-96 N/A N/A N/A N/A 3-27-97 N/A N/A N/A N/A I 10-20-98 N/A N/A N/A N/A 1 - 11-99 N/A N/A N/A N/A 5-12-99 .N/A N/A 45.13 N/A I MW-1 8-20-99 N/A N/A 40.96 N/A 12-7-99 N/A N/A 40.96 N/A 3-30-00 N/A N/A 46.35 N/A I 7-3-00 N/A N/A N/A N/A 1-3-01 51.73 43.28 350.75 6-4-01 394.03 51.80 42.15 351.88 I 4-5-96 N/A 3-27-97 N/A 10-20-98 44.36 1-11-99 44.28 5-12-99 42.76 I 8-20-99 38.61 MW-2 10-6-99 N/A 12-7-99 41.47 I 3-30-00 45.19 7-3-.00 42.01 1-3-01 54.29 43.38 340.72 I 6-4-01 395.01 54.29 41.82 9 353.1 i 4-5-96 N/A 3-27-97 N/A 10-20-98 45.46 5-12-99 44.21 8-20-99 39.92 I MW-3 10-6-99 N/A 12-7-99 42.45 3-30-00. 46.44 I 7-3-00· 43.05 1-3-01 54.80 44.21 350.43 6-4-01 394.64 54.84 42.82 351.82 ~E2C Remediation, LLC T2-1 I Pre ect Number 1801BK04 August 15, 2001 7-3-00 43.42 I 1-3-01 52~80 43,90 350,05 .... MW-8 6-4-01 393,95 50,90 43,36 350,59. ' - - I 7-3-00 44.02 1-3-01 51,60 45.14 ' 348.91 I 'MW-9 6-4-01 394.05 50.80 43.52 350.53 7-3-00 45.51 1-3-01 52.50 45.28 347.63 I MW-10 45.34 347.57 6-4,01 392.91 52.34 I . 7-3-00 45.75 MW-11 1-3-01 391.35 48.30 44.92 346.43 WELL SILTED UP, TAKEN OUT OF SERVICE, REPLACED BY MW-11R I MW.-11R 391.22 6-4-01 63.52 54.76 336.46 6-4-01 NMFP NMFP NMFP MW-12 392.01 I 6-4-01 77,00' 69.88 322.77 MW-13 392.65 I MW-14 391.87 6-4-01 65.4O 58.10 333.77 Notes: I NMFp = Not measured, greater than 30" of free-product Top of Casing Elevations are measured at the north side of casing and referenced to mean sea level i Groundwater Elevations- are not corrected for product thickness before 01/03/01 Groundwater elevations after 01/03/01 are based on Benchmark on canal abutment ! E2C Remediation, LLC T2-3 ,I Project Number 1801BK04 August 15, 2001 TABLE 3 SUMMARY OF HISTORICAL GROUNDWATER ANALYTICAL DATA MR. FAST SERVICE STATION 600 EAST BRUNDAGE LANE BAKERSFIELD, CALIFORNIA WELL ID DATE ..................................... j ..................................... ~.......~..m..~. .... [ ................. I ................................ ! .................................. I .................................. I .................................. ! .............................. I ............................... I .............................. (~g/L) 7/20/95 4,200 113,000 ND 40,000 329,000 NS NA NA - NA NA NA 4/5/96 NA NA NA NA HA NS NA N~ HA NA NA 3/27/97 170 27,000 '5,000 30,000 210,000 NS NA 22,-000 NA NA NA' 10/20/98 NSFP NSFP NSFP NSFP NSFP NS NA NA NA NA NA 1/11/99 NSFP NSFP NsFP NSI~P NSFP NS NA N~ N~, NA NA 5/12/99 NSFP NSFP NS~P NSFP NSFP NS NA NA 'I~A NA NA 8/20/99 NSFP NSFP NSFP NSFP NSFP NS NA NA' NA NA NA MW-1 12~7/99 <5600 35,400 62,400 454,000 N/A NS NA <38,000 ~A NA NA 3/30/00 NSFP NSFP NSFP N'~I~P NSFP ~qS' NA NA NA NA NA 7/3/00 8.2 8.8 1,600 24,000 130,000 NS NA NA ' NA NA NA 1/3/01 <20 · 460 680 19,700 18,890 NS <200 <20 <20 <20 <20 1-3-01 (Dup) <20 710 1400 18 17,930 NS <200 <20 <20 <20 <20 3-2-01 NSFP NSFP NsFP - NSFP NSFP NSFP NSFP NSI~ NSFP NSFP NSFP 6/4/01 <50.0 340 ' 1,610 e,o50 65,740 NA <250.0 <50.0 . <5010 <50.0 <50.0 4-5-96 <0.3 <.3 <0.3 <.03 <50.0 NA NA NA NA NA NA 3-27-97 1.0 6.2 0.83 '4.5 44 NA NA NA i~IA NA NA 10-20-98 <0.5 <0.5 <0.5 <0.5 <50 NA NA <0.5 NA NA NA 1-11-99 <0.5 <0.5 <0.5 <0,5 <50 NA NA <0.5 NA NA NA 5-12-99 <0.3 5.5 <0.3 1.52 · <500 NA NA <2.0 ~A NA NA 8-20-99 <0.3 <0.3 <0.3 <0.6 <500 -NA NA <2.0 NA NA NA MW-2 12-7-99 <0.3 <0.3 <0.3 <0.6' <500 N~ NA <2.0 NA NA NA 3-30-00 <0.3 <0.3 <0.3 <0.6 <500 NA NA <0.5 NA NA NA 7-3-00 <0.5 <0.5 <0.5 <0.5 <50 NA · NA <0.5 NA NA NA 1-3-01 <0.50 <0.50 <0.50 <0.50 <50 'NA <5 <0~50 <0.50 <0.50 <0.50 3-2-01 <0.50 <0.50 <0.50 <0.50 <50 NA <5 <0.50 <0.50 <0.50 <0.50 6/4/01 <0.5 <0.5 <0.5 <0.5 <50 NA <2.5 <0.5 <0.5 <0.5 <0.5 E2C Remediation, LLC T2J- 1 Proj~'t Number 1801BK04 August 15, 2001 TABLE 3. SUMMARY OF HISTORICAL GROUNDWATER ANALYTICAL DATA MR. FAST SERVICE STATION 600, EAST BRUNDAGE LANE BAKERSFIELD, CALIFORNIA WELL ID DATE .................................... ~ ..................................... ~ .................................................................................................................................................................... : ~L) 4-5-96 41 42 35 3,000.00 8,600 NA NA NA NA NA NA 3-27-97 37 8.4 170 1,100 12,000 NA NA NA . NA NA NA 10-20-98 4.6 <0.5 1.90 53.0 1,300 NA . NA 3.8 NA NA NA 1-11-99 40 16.00 0.60 180 8,200 NA NA 65.0 NA NA NA 5-12-99 8.36 <0.3 <0.3 421 14,300 NA NA 69.4 NA NA NA 8-20-99 <0.3 <0.3 <0.3 <0.6 <500 NA NA ~2.0 ~A NA ' ~A ' 10-6-99 <0.3 <0.3 <0.3 <0.6 <500 NA NA 1.1 NA NA MW-3 12-7-99 <0.3 <0.3 <0.3 1.38 <500 NA NA <1'.0 NA NA 3-30-~ ~.04 2.0s <0.3 89.s0 1,020 N~ NA <0.5 NA NA NA 7-3-00 <50.0 <0.5 <0.5 ~ <0.5 <50 NA NA <0.5 NA NA NA ' 1-3-01 <0.50 <0.50 <0.50 <0.50 <0.50 NA <5 <0.'50 <0.50 <0.50 <~.'~0 3-2-01 <50 <0.50 0.85 10 . 2,704 NA <5 <0.50 <0.50 <0.50 .<0.50 ~4/01 <5.0 <5.0 <5.0 - <5.0 383 NA <25.0 ' <5.0 <5.0 <5.0 <5.0 , dup <5.0 <5.0 <5.0 <5.0 388 NA <25.0 <5.0 <5.0 <5.0 <5.0 4-5-96 <0.3 <0.3 0.75 260 1,800 NA NA NA NA NA NA 3-27-97 2.00 20.0 1.10 9.8 340 NA NA NA NA NA NA 10-20-98 15 2.50 87 930 3,000 NA NA 300 NA NA NA 1-11-99 <0.5 <0.5 <0.5 <0.5 . <50 NA NA ' 7.2 NA NA NA 5-12-99 58.7 9.87 388 1'.040 13.600 NA NA 524.0 NA NA NA 8-20-99 <0.3 <0.3 <0.3 <0.6 <500 NA NA 3.47 ~A NA NA 10-6-99 <0.3 <0.3 <0.3 <0.6 <500 NA NA <2.0 NA NA ~A MW~ 12-7-99 <0.3 <0.3 < O. 3 1. ~ 1 <500 NA NA 5.15 NA N~ NA 3-30-~ <0.3 <0.3 ~0.3 <0.6 <500 NA . NA <0.5 NA NA NA 7-3-~ <0.5 <0.5 <0.5 <0.5 <50 NA NA <0.5 NA NA NA 1-3-01 <50.0 <0.5 <0.5 <0.5 <50 NA <5 <0.50 <0.50 <0.50 <0.50 3-2-01 <0.50 <0.50 <0.50 <0.50 <50 NA <5 <0.50 <0.50 <0.50 <0.50 ' 6/4/01 <0.5 <0.5 <0.5 <0.5 <50 NA <2.5 <0.5 <0.5 <0.5 <0.5 E2C Remediation, LLC T3-2 m m m m m m m m m m m m m m m m m m Project Number 1801BK04 August 15, 2001 ~ABLE 3 SUblMARY OF HISTORICAL GROUNDWATER ANALYTICAL DATA MR. FAST SERVICE STATION 600 EAST BRUNDAGE LANE BAKERSFIELD, CALIFORNIA ~g/L) 3-27-97 8.8 32 3.6 29 320 NA NA NA NA NA NA 10-20-98 <0.5 <0.5 <0.5 <0.5 <50 NA NA <0.5 NA NA NA 1-11-99 <0.5 3.9 <0.5 1.~0 <50 I~A NA <0.5 NA NA N~ .... 5-12-99 <0.3 <0.3 <0.3 1.27' <500 I~A ' NA 21.40 NA NA NA 8-20-99 <0.3 <0.3 <0.3 <0.6 <500 NA NA · 1.65 NA NA NA 12-7-99 <0.3 <0.3 <0.3 <0.6 <500 I~A . NA <1.0 NA NA NA MW-5 3-30-00 <0.3 <0.3 <0.3 <0.3 <500 NA NA <0,5 NA- NA NA' 7-3-00 <0.5 <0.5 <0.5 <0.5 <50 NA NA <0,5' NA NA N~, ' 1-3-01 <0.50 <0.50 <0.50 2.46 <50 NA <5 <0.50 <0.50 <0.50 . <0.50 3-2-01 <0.50 <0.50 <0.50 <0.50' <50 NA <5 <0.50 <0.50 <0.50 <0.5(~ 6/4/01 <0.5 <0.5 <0.5 <0,5 <50 N,~ <2.5 <0.5 <0.5 <0.5 <0.5 3-27-97 0.98 5.90 0.92 5.80 60.00 NA NA NA NA NA NA 10-20-98 <0.5 <0.5 <0.5 <0.5 <50 NA : NA N~ N~ NA NA 1-11-99 <50.0 5.30 <0.5 2.80 <50 NA' ! .. NA <0.5 NA NA NA 5-12-99 <0.3 1.05 ' (~:62 4.67 <500 NA .'. NA <2~(~ N~ N^ NA 8-20-99 <0.3 <0.3 <0.3 <0.6 <500 'NA... :' NA <1.0 NA NA NA" 12-7-99 NA NA NA NA NA NA: NA NA NA NA NA MW-6 3-30-00 <0.3 <0.3 <0.3 <0.6 <500 ~Ai':::"': ~i NA <0.5 NA NA NA 7-3-00 <0.5 <0.5 <0.5 <0.5 <50 N.~:: ~:.:~' '' i NA <0.5 NA NA NA 1-3-01 <0.50 <0.50 <0.50 <0.50 <50 NA. :: :.~:~:· (5 <0m50 (0m~0 (0.50 <0.50 3-2-01 <0.50 <0.50 <0.50 <0.50 <50 NA '?~i: ' <5 <0.50 <0.50 <0.50 <0.50 6/4/01 <Om5 ' (O 5 <Om5 <0'5 <50 ' NA :~' ~2'5 <0'5 <0'5 <0'5 <0'5 3--27'97 2,400 24,000 2,300 14,000 140,000 NA NA -- NA NA NA 10--20--98 110 25,000 3,500 27,000 150,000 NA NA 150 NA NA NA 1 '11 '99 220 31,000 4,200 31 ,000 120,000 NA NA 380 NA NA NA 5'12--99 NSFP NSFP NSFP NSFP NSFP NA NA NSFP NA NA NA 8--20--99 NSFP NSFP NSFP NSFP NSFP NA NSFP 12--7--99 NSFP NSFP NSFP NSFP NSFP NA NSFP MW'7 3--30--00 NSFP NSFP NSFP NSFP NSFP NA NSFP 7--3--00 NSFP NSFP NSFP NSFP NSFP NA NSFP 1--3--01 NSFP NSFP NSFP NSFP NSFP NA NSFP NSFP NSFP NSFP NSFP 3/2/01 <20 9,400 4, 100 28,000 24 ,940 NA <200 <20 <20 <20 <20 6/4/01 <50'0 5,730 3,590 13,230 87,960 NA <2500 <50'0 <50'0 <50'0 <50'0 E2C Remed~t~n, LLC T3-3 Project Number 1801BK04 August 15, 2001 ~ TABLE 3 SUMMARY OF HISTORICAL GROUNDWATER ANALYTICAL DATA MR. FAST SERVICE STATION 600 EAST BRUNDAGE LANE BAKERSFIELD, CALIFORNIA ~ug/L) 7-3-00 820 64,000 6,300 73,000 260,000 NA. NA 550 NA NA NA 1-3-01 34 45,000 5,000 30,800 40,9'10 NA <0.50 3/2/01 34 53,000 4,000 26,000 34,280 NA <2,000 <200 <200 <200 <200 MW-8 dup <200 48,000 4,100 26,000 33,610 NA <2,000 <200 <200 <200 . <200 6/4/01 <50.0 43,560 3,770 14,760 64,320 NA <250.0 <50.0 <50.0 <50.0 <50.0 7-3-00 <0.5 <0.5 <0.5 <0.5 . <50 NA NA <0.5 NA NA NA 1-3-01 <0.50 <0.50 <0.50 <0.50 <50 NA <5 <0.50 <~).50 <0.50 <~).50 MW-9 3/2/01 <0.50 <0.50 <0.50 <0:50 <~50 NA <0.50 6/4/01 <0.5 <0.5 <0.5 ~0.5 <50 NA <2.5 <015 <0.5 <0.5 <0.5 7-3-00 <0.5 <0.5 <0.5 <0.5 <50 NA NA <0.5 NA NA NA 1-3-01 <0.50 <0.50 <0.50 <0.50 <50 NA <5 <0.50 <0150 <0.50 <0.50 MW-10 3/2/01 <0.50 <0.50 ' <0.50 <0.50 <50 NA <5 <0.50 <~3.5~ <0.50 · <'0.50 6/4/01 <0.5 <0.5 <0.5 <0.5 <50 NA <2.5 <0.5 <0.5 <0.5 <0.5 7-3-00 <0.5 <0.5 <0.5 <0.5 <50.0 NA NA <0.5 NA NA NA 1-3~01 <20 3,600 2,600 16,300 12,050 NA <200 <5 <20 <20 <20 3/2/01 NSWS NSWS NSWS NSWS NSWS NSWS NSWS NSWS NSWS NsWs NSWS 3/2/01 Well taken out of service, silted up to 12 feet from bottom, replaced by MW- 11R 6/4/01 540 11,980 1,390 7,230 54,410 <50 <250.0 <50.0 <50.0 <50;0 <50.0 MW-11R 6/4/01 NSFP NSFP NSFP NSFP NSFP NSFP NSFP NSFP NSFP NSFP NSFP MW-12 6/4/01 <50.0 <50.0 <50.0 <50.0 5,580 <50 <250.0 <50.0 <50.0 <50.0 <50.0 MW-13 E2C Remediation, LLC T3-4 m mm m m 'm m m m m m m m m m m m m m Project Number 1801BK04 August 15, 2001 TABLE 3 SUMMARY OF HISTORICAL GROUNDWATER ANALYTICAL DATA MR. FAST SERVICE STATION 600 EAST BRUNDAGE LANE BAKERSFIELD, CALIFORNIA ~.z~.~ ~o.u~.~ ~".~.; ~ x;,O;.*~s_.__.._ ___.._ ~,.~ ~ ~,,~ ~ ~ ~ ~,~ ~ ~ m WELL ID DATE ] ~ ~ [ I .......... 1 ............ : ................. I ............................... I ............................. MW-14 I 6/4/01 871 1,494 371 1,057 9,240 <50 <25.0 <5.0 <5.0 5.0 <5.0 Notes: Sampling performed by E2C starting 01/03/01 1/3/01 duplicate for MW-1 is listed as sample MW-12 on Chain-of-Custody MTBE analysis by EPA Method 5030/8020 from10-20-98 to 1-3-01 MTBE analysis by EPA Method 8260b from 1-3-01 NA = Not analyzed for this compound ND = Below Practical Quantitation Limits NS = Not Sampled this Quarter NSFP = Not sampled this quarter due to presence of free-product NS.WS = Not sampled, well dry, casing silted up 12 feet from bottom; replaced by MW-11R TPHD = Total Petroleum Hydr~rbons as Diesel TPHG = Total Petroleum Hydrocarbons as Gasoline r E2C Remediation, L L C T3-5 . Project Number 1801BK04 August 15, 2001 TABLE 4 SUMMARY OF APRIL 2001 SOIL ANALYTICAL DATA Mr. Fast Service Station 600 Brundage Lane, Bakersfield, California BORING SAMPLE DEPTH ......... ~. ........ J ......... ..T.. ........ J. ......... ,,E. ......... ~ ......... ..X. ......... [......T...P...H.~I....J ...... ..T..B..A......,J.......M...T....B...E.....l ...... .... ID · DATE ID (feet bgs) (rog/Kg) AS1-45 45 <0.005 5.782 90.05 118.8 5.3 <0.250 <0.05 <0.05 <0.05 <0.05 AS-1 4/25/01 AS1-55 55 <0.005 0.02 0.529' 2.016 592 <0.250 <'0.05' <0.05 <0.05 '<0.05 AS1-65 65 <0.005 <0.005 <0.005 0. i84 117 <0.250 <0.05 <0.05 <0'.05' '<0.05 AS2-45 45 <0.005 <0.005 <0.005 0.073 395 <0.250 <0.05 . <0.05 <0.05 <0.05 AS-2 4/26/01 AS2-55 55 <0.005 <0.005 <0.005 <0.005 50 <0.250 <0.05 <0.05 <0.05 <0.05 AS2-65 65 <0.005 <0.005 <0.005 0.163 46 <0.250 <0.05 <0.05 <0.05 <0.05 AS3-40 40 <0.005 <0.005 <0.005 <0.005 9.9 <0.025 <0.005 <0.005 <0.005 <0.005 AS-3 4/24/01 AS3-50 50 <0.005 <0.005 <0.005 <0.005 <0.5 <0.025 <0.005 <0.005 <0.005 <0.005 AS3-60 60 <0.005 <0~005 <0.005 <0.005 <0.5 <0.025 <0.005 <0.005 <0.005 <0,005 MW-11 R-45 45 <0.005 <0.005 <0.005 <0.005 <0.5 <0.025 <0.005 <0.005 <0.005 <0.005 MW-11 R-55 55 <0.005 <0.005 <0.005 <0.005 <0.5 <0.025 <0.005 <0.005 <0.005 <0.005 MW-11 R 4/26/01 MW-11R-60 60 <0.005 <0.005 <0.005 <0.005 <0.5 <0.025 <0.005 <0.005 <0.005 <0.005 MW-11 R-65 65 <0.005 <0.005 <0.005 <0.005 <0.5 <0.025 <0.005 <0.005 <0.005 <0.005 MW-12-50 50 ' 6.678 525.9 14.25 115,676 677 <0.250 <0.05 <0.05 <0.05 <0.05 MW-12-55 55 0.19 23.562 9.944 36.689 874 <0.250 <0.05 <0.05 <0.05 <0.05 MW-12 4/26/01 MW-12-60 60 0.795 14.937 5.808 23.648 597 <0.250 <0.05 <0.05 <0,05 <0.05 MW-12-65 65 <0.005 <0.005 <0.005 <0.005 <0.5 <0.025 <0.05 <0.05 <0.05' <0.05 MW-13-50 50 <0.005 <0.005 <0.005 <0.005 <0.5 <0.025 <0.005 <0.005 <0.005 <0.005 MW-13-55 55 <0.005 <0.005 <0.005 <0.005 0.96 <0.025 <0.005 <0.005 <0.005 <0,005 MW-13 4/27/01 MW-13-60 50 <0.005 <0.005 <0,005 <0.005 <0.5 <0.025 <0.005 <0.005 <0.005 <0.005 MW-13-65 65 <0.005 <0.005 <0.005 <0.005 <0.5 <0.025 <0.005 <0.005 <0.005 <0.005 MW-14-65 65 0.0281 0.0798 <0.5 0.0166 0.58 <0.025 <0.005 <0.005 <0.005 <0.005 MW-14-70 70 <0.005 <0.005 <0,005 <0.005 <0.5 <0.025 <0.005 <0.005 <0.005 <0.005 MW-14 4/26/01 MW-14-75 75 <0.005 <0.005 <0.005 <0.005 <0.5 <0.025 <0.005 <0.005 <0.005 <0.005 MW-14-78 78 <0.005 <0.005 <0.005 <0.005 <0.5 <0.025 <0.005 <0.005 <0.005 <0,005 VE-3-15 15 <0:005 <0.005 <0.005 <0.005 <0.5 <0.025 <0.005 <0,005 <0.005 <0.005 VE-3 4/25/01 VE-3-25 25 <0.005 <0.005 <0.005 <0.005 <0.5 <0.025 <0.005 <0.005 <0.005 <0.005 VE-3-37 37 <0.005 <0.005 <0.005 <0.005 <0.5 <0.025 <0.005 <0.005 <0.005. <0.005 Notes: Only those samples submitted for analyses are listed NA = Not Analyzed < = Not reported at or above the PQL, which is indicated by the number ND = Below Practical Quantitation Limits B = Benzene PQL= Practical Quantitation Limits DIPE = Diisopropyl Ether NS = Not Sampled E = Ethylbenzene T = Toluene ETBE = Ethyl Tertiary Butyl Ether TAME = Tertiary Amyl Methyl Ether rog/Kg = milligrams per kilogram (equivalenty to parts per million) TBA = Tertiary Butyl Alcohol MTBE = Methyl Tertiary Butyl Ether TPH,cj = Total Petroleum Hydrocarbons as Gasoline E2C Remediation, LLC T4- I Project Number 1801BK04 August 15, 2001 TABLE 5 Mr. Fast Service Station 600 Brundage Lane Bakersfield, California WELL VE-1 VE-2 VE-3 MW-1 MW-3 MW-4 MW-5 MW-6 MW-7 MW-8 MW-9 MW-10 AS-1 AS-2 AS-3 VE-1 X VE-2 1 7 X VE-3 75 93 X MW-1 23 44 54 X MW-3 44 67 59 43 X MW-4 65 78 48 50 84 X MW-5 130 142 86 115 141 66 X MW-6 73 80 90 70 36 117 177 X MW-7 143 158 77 122 101 122 135 123 X MW-8 67 83 9 45 51 45 92 87 82 X ' MW-9 148 162 111 133 94 157 192 91 68 111 X vlW-lO 195 200 112 163 167 129 91 200 97 121 166 X ~,S-1 23 48 38 15 53 35 100 84 118 37 137 151 X As-2 67 85 41 47 47 53 98 83 77 7 104 123 42 X AS-3 95 110 63 75 93 40 52 128 92 42 145 90 63 47 X E2C Remediation, LLC T5-1 August 15, 2001 1801BK04 Project Number TABLE 6 REMEDIAL SYSTEM COST COMPARISON Mr. Fast Service Station 600 Brundage Lane Bakersfield, California One System with H-Boring Two Systems with no H-Boring 24" 110-foot Horizontal Boring 24" 110-foot Horizontal Boring E2C Services (inckudes Pernitting) 4,000.00 E2C Services (inckudes Pernitting) 0.00 24" 11 O-foot H-boring 11,550.0C E2C Markup @ 15% 0.15 11,550.00 1.732.5C 13,282.5C 0.00 Traffic Controll (includes 15% markup) 4,400.0(: Traffic Controll 0.00 H;Boring Subtital 21,682.50 H-Boring Subtital 0.00 Trenching & Piping Installation (3-foot wide X 2 feet deep) Trenching & Piping Installation (3-foot wide X 2 feet deep) E2C Services (inckudes Pernitting) 10,185.00 E2C Services (inckudes Pernitting) 6,700.00 E2C Materials & Equipment 6,800.00 E2C Materials & Equipment 5,300.00 Piping & Fittings 5,000.00 Piping & Fittings 2,500.00 Subtotal 21,985.00 Subtotal 14,500.00 Electrician 3,000.00 Electrician 3,000.00 Install Power Pole 1.000.00 Install Power Poles (two) 2.000.00 4,000.00 5,000.00 E2C Markup @ 15% 0.15 4,000.00 600.00 E2C Markup @ 15% 0.15 5,000.00 750.00 5,600.00 7,750.0C T&P Install Subtotal 27,585.0(3 T&P Install Subtotal 22,250.0C Operations and Maintenance & Leasing Operations and Maintenance & Leasing One System O&M per Month 1,600.0(; Two Systems O&M per Month 1,600.00 ~.500.0(: Lease - 2 Machines per month 4.800.00 Lease One Large Machine per Month 500CFM or greater w/huge aparge blower Subtotal 5,100.00 Subtotal 6,400,00 Utilities per month .3,000.00 Utilities per month 4,0oo.00 Subtotal ' 3,000.00 Subtotal 4,000.00 E2C Markup @ 15% 0.15 3,000.00 450.00 E2C Markup @ 15% 0.15 4,000.00 600.00 3,450.00 Subcontractor Subtotal 4,600.00 O&M & Leasing Subtotal 8,550.00 O&M & Leasing Subtotal 11,000.00 12 months Operatior 12 8,550.00 102,600.00 12 months Operatior 12 11,000.00 132,000.00 ONE SYSTEM TOTAL 151,867.50 T~VO SYSTEM TOTAL 154,250.00 I E2C Remediation, LL C T6-1 I , I Prelect Number 1801BK04 August 15. 2001 '1 APPENDICES Appendix A July 1993 Site Assessment Pict and Analytical Laboratory Data Sheets Appendix B AEC, 1995 Analytical Data Summary Table Appendix C RWQCB Letter Dated 3 August 1999 Appendix D Boring Logs for Wells MW-8 through MW-11 Appendix E AEC, 2000b Soil Sample Analytical Results - June 2000 Appendix F January 2001 Surveyor's Pict Appendix G Boring Logs for Wells MW-11R, MW-12 through MW-14 and SVE & AS Wells Appendix H Soil Analytical Laboratory Reports- April 2001 Appendix I Second Quarter 2001 Well Purging Data Sheets Appendix J Second Quarter 2001 Groundwater Analytical Laboratory Report Appendix K Site Safety Plan Appendix L Air Sparging, .Dissolved Oxygen, and Groundwater Elevation Data~ Appendix M SVE/AS Observation Field Data Sheets Appendix N SVE Radius of Influence Calculations Appendix O SVE/AS Pilot Test Influent/Effiuent Analytical LaboratOry Report E2C Remediati°n, LLC Appendices I Project Number 1801BK04 August 15. 2001 I I '1 I I I I ~ APPENDIX A From WEECO, 1993 July 1993 Site Assessment Plot and Analytical Laboratory Data sheets ! ! I ! ! ! E2C Remediation, LLC Appendix ! 14140 E. Alondra Boulevard CHEMTEK Suite A Santa Fe Springs i !1 C . California 9 0 6 7 0 ~VIRONMENTAL ','..', 19 ~,,m. 3!0-926-984~i '.', '.- 3'I} 926-8324 .B 0 R A T O R ! E S , c,~, a., - client: Western Environmental Engineers Co. Project: 93-252 Cha Job No: 307025 Date:07-23-93 ~×.:~:~:::::~::::::~::: ~!~ ~:!:~:i~ ~ ~ ~ ~!~ ~:::~ ~ :::: :::: ~ ~ ..... '" .... Analysis: EPA 8015m (Gasoline), Sample ID See below Lab Sample ID: See below Sample Date: See below Analysis Date: 07/17-22/93 Detection Sample ID Lab ID Sample Date Results Limit (mg/kg) (mt/kg) B-1-20 0lA 7/15/93 ND 2.5 B-l-40 02A 7/15/93 ND 2.5 B-2-10 03A 7/15/93 ND 2.5 B-2-20 04A 7/15/93 18 2.5 B-2-30 0SA 7/15/93 900 10 B-2-40 06A 7/15/93 2465 50 B-2-45 07A 7/15/93 43 2.5 B-3-10 08A 7/15/93 ND 2.5 B-3-30 09A 7/15/93 ND 2.5 B-3-40 10A 7/15/93 ND 2.5 B-4-20 llA 7/15/93 ND 2.5 B-4-30 12A 7/15/93 ND 2.5 B-4-40 13A 7/15/93 8.0 2..5 B-6-10 14A 7/16/93 ND 2.5 B-6-20 15A 7/%6/93 ND 2.5 B-7-10 16A 7/16/93 3.5 2.5 B-7-20 17A 7/16/93 ND 2.5 B'8-10 18A 7/16/93 ND 2.5 B-8-20 19A 7/16/93 ND 2.5 B-9-10 20A 7/16/93 45 2.5 B-9-20 2lA 7/16/93 ND 2.5 B~45 22A 7/15/93 64 (m/L) 50 (mg/L) COMMENTS:'ND' INDICATES THAT THE COMPOUND IS NOT DETECTED AT THE SPECIFIED LIMIT. 14140 E. Alondra Boulevard CHEMTEK Suite A Santa Fe Springs i g C. California 9 0 6 7 0 ENVIRONMEN~_A..~ ' Telephone 310-926-9848 [ A'----~"'~-~ X T O ~ i E $ '' Telel:ax '310-926-8324 client: Western Environmental Engineers Co. Project: 93-252 Cha Job No: 307025 Date:07-23-93 ~!:!:~!:i~i~i:~:~:i:~:i~:i:~:~:i~!~i~i!i!~:~:~:~:~i:i:~:~:~::~:::::::~::¥::~:~:~:~:~.~.:. ×':' ~;'x':':';~':':':':':': ................................. · ............................. Analysis: EPA 8020 (BTEX) Sample ID: See below Lab Sample ID: See' below Sample Date: 07./15-16/93 Analysis Date: 07/17-22/93 Sample ID Lab ID Benzene Toluene Ethyl- xylene Detect benzen Limit (~g/kg) .(~g/kg) (~g/kg) (~g/kg) (~g/kg) B-l-20 0lA ND 28 19 173 5 B-l-40 02A ND ND ND ND 5 B-2-10 03A ND ND ND ND 5 B-2-20 04A ND 125 127 970 5 B-2-30 05A 436 1250 1529 1214 20 B-2-40 06A 3158 2223 1526 9476 100 B-2-45 07A 9 37 60 321 5 B-3-10 08A ND 24 6 55 5 B-3-30 09A ND ND ND ND 5 B-3-40 10A ND 6 ND 21 5 B~4-20 llA ND ND ND ND 5 B-4-30 12A ND ND. '. ND ND 5 B-4-40 13A 17 190 51 319 5 B-6-10 14A ND ND ND ND 5 B-6-20 15A ND ND ND ND 5 B-7-10 16A ND ND ND 62 5 B-7-20 17A ND ND ND 40 5 B-8-10 18A ND ND ND ND 5 B-8-20 19A ND ND ND 48 5 B-9-10 20A ND 43 43 382 5 B~9-20 2lA ND ND ND . ND 5 .COM2~ENTS:'ND' INDICATES THAT THE COMPOUND IS NOT DETECTED AT' THE' " SPECIFIED LIMIT. I I prqiect Number 1801BK04 Auo_ust 15. 2001 APPENDIX B From AEC, 1995 AnalYtical Data Summary Table E2C Remediation, LLC Appendix ~ MW-3 .<3~.~' STORE ~ 9-4 · ,<~,+°~ B-4 LEOENO .:.:...:.:.:. B-3 · WEECO ao~ng Locatton-7/~ 3-3e ':':':':':': : :':':':':' AB-le AEC Soil Bot~g ~ .. MW-4 ~. Pmpos~ we, ~ m · ~MW-4 g B-3 t~D'MW.2 "' DRIVE waY " DRIVE WAY ..... BRUNDAGE LANE ~~ - SiteMr.FastMap- FIGURE · ~NC. 600 Brundage Lane 2 ~'. ADVANCED ENVIRONMENTAL CONCEPTS Countv of Kern · Bakersfield, California ! I Site Assessment Rep°rt Advanced Environmental Concepts, Inc. well. An additional 7 gallons [totaling four casing volumes] were then purged from the well prior to sampling. The water-bearing zone was allowed to stabilize to within t0% of its original static level and subsequently sampled. Depth to water was measured in the well prior to sampling. Because only one well was installed hydraulic gradient and flow I direction calculations can not be performed. The groundwater sample.was collected from the monitoring well using a disposal teflon I bailer. The bailed water was transferred to clean, labeled, VOA vials, sealed with teflon , lined septa. Care was exercised to ensure that no air bubbles were present inside the vials. The sample container caps were then taped on to ensure firm seal. The vials were IPlaced in protective padding and stored on frozen blue ice for shipment to Associated Laboratory, Inc., a California Certified Laboratory. '! 5.0 ANALYTICAL RESULTS Selected soil and water samples were submitted to Associated Laboratories, Inc., of Orange, I California and analyzed for total petroleum hydrocarbons as gasoline (TPH-g) and volatile aromatics (BTEX] using CA DHS and EPA 8020 methods, respectively. The analytical results for soil samples are presented in Table 2 and water sample results are in Table 3. Laboratory reports and I Chain-of Custody are provided In Appendix C. TABLE 2 Analytical Results- Soil Borings I 07110/95 (ppm) I Sample I.D. TPH-g Benzene Toluene Ethylbenzene Xylenes ABt-20 5750 ND 2.5 ND 700 AB'I-25 6000 ND 74 7 t 595 I AB ~-30 4940 0.2 t 167 t04 389 AB 'I -35 ND 0.007 0.13 0.024 0.18 AB1-40 ND ND ND ND · ND i ABI-45 ND ND ND ND ND ' AB2-20 ND ND ND ND ND AB2-30 ND ND ND ND · ND I AB2-40 820 t .6 4'1 ND 89 AB3-20 ND ND ND ND ND I AB3-25 8.0 0.15 0.60 ND 0.8 AB3-30 6.0 0.'10 0.70 ND 0.60 AB3-35 ND ND ND ND ND I AB3-40 ND ND ND ND ND D.L.(mgm/kg) t ,0 0.005 0.005 0.005 0.005 ND: Non-detected at indicated limit of detection D.L. Detection Limit I ~O~CL* AEC 05C-{548 * ENVIRONMENTAL CONCEPTS WITH DESIGN IN MIND ' ~ I 4400ASHEROAQ#206 * BAKEFtSFIELO. CAg3313 805/835-1641~ * FAX 8051831-1771 I Project Number 1801BK04 Au_oust 15. 2001 ! ! ! ! ! ! ~ APPENDIX C I RWQCB Letter Dated 3 August 1999 ! I ! ! ! ! ! E~C Remediation, LLC Appendix Cahfornla Regional Water Quality Control Board '~ ~ Central Valley Region Steven T. Butler, Chair Gray Davis Ilo winston Hickox ,.~ecr~ta. ry for Fresno Branch Office Governor Enviror, mental Internee Address: http://www.swrcb.ca.gov/-rwqcb5 Pro~eclion 3614 E.x~t Ashlan Avenue. Fresno, California 93726 Phone (559) 445-5116 · FAX {559) 445-5910 3 August 1999 / -.a~. Mr. Ki Chu Yi .. -_ Mr. Fast Service Station ~nO0 Erundage Bakersfield, CA 93304 UNDER GR 0 UND S TORA GE TANK LEA K A T Mr. FA S T SER VICE S TA TION, 600 BRUNDAGE LN., BAKERSFIELD, KERN COUNTY You submitted groundwater monitoring results for the referenced site contained in a 24 May 1999 report Quarterly Groundwater Monitoring Report, Mr. Fast (Report) prepared by Advanced Environmental Concepts, Inc. (AEC) of Bakersfield, California. Continued quarterly monitoring of the monitoring well network was requested in our 3 March 1998 letter. Our review of the RePort and comments follow. Report Summary The Report indicates that six of seven existing monitoring wells were sampled on 12 May 1999. Monitoring well MW- 1 was not sampled due to the presence of free product. Concentrations of petroleum hydrocarbons were detected in samples from wells MW-2 through MW-7. The lowest concentrations were present in upgradient well MW-2 and crossgradient wells MW-5 and MW-6. TPH- g concentrations exceeding 10,000 lag/1 were detected in wells MW-4 and MW-5. Concentrations of TPH-g in downgradient well MW-7 exceeded 100,000 ~tg/1, evidently due to the presence of free product in this well. No EPA Method 601 constituents were detected in the well samples. The groundwater flow direction varies from south-southeast to southeaSt across the site and is apparently influenced by recharge from the adjacent canal. The groundwater gradient is steep (0.05 feet/feet), exhibiting over 10 feet of elevation difference between upgradient and downgradient wells (210 feet apart). The Report states that wells MW- 1 and MW-3 were converted to vapor extraction/air sparge wells and that a vapor extraction system began operation at the site on 7 May 1999. The Report indicates operation of a vacuum extraction and sparging remediation system haS affected the groundwater dynamics, necessitating adjustment of the system to prevent migration of free product. Groundwater elevation depth data for the current quarter (only) is provided but shows an unexplained "correction factor" varying from 0.0 to 1.7 feet. I California Environmental Protection Agency I ~ Recycled Paper Mr. Fast Se~ice Station - 2 - 3 August 1999 The Report recommended continued quarterly monitoring, operation of the. vapor extraction/air sparging sys!em, and bailing of free phase hydrocarbons.. Report Comments Our comments regarding the referenced Report follow. · The thickness of free product present in wells MW- 1 and MW-7 was not noted in the Report. Please provide current and historical thickness data in a tabular format in future reports. The depth to water and depth to product must be recorded and reported during each groundwater monitoring event. · · Please provide current and historicai tabular data regarding the date of extraction, volume, extraction method, and disposition of bailed or pumped free phase hydrocarbons. · No explanation of the groundwater depth "correction factor" was given in the report. What is the purpose of the factor? The presence of an active groundwater sparging and vapor extraction system at the site suggests the groundwater table will respond to this by "mounding" around the wells used for extraction/sparging (MW-1 and MW-3). Is the purpose of the "correction factor" to filter out this effect or to correct for a groundwater surface depressed by free product? Please provide a separate table of current and historical groundwater depth/elevation data without a "correction factor" in future reports. You may add a column of "corrected" data if you wish. In addition, the groundwater elevation contour map provided in future reports must represent "uncorrected" data. Again, you may include a map of "corrected" data if you wish. These maps must be clearly labeled as to what data and date they represent. · . The Report references wellhead elevation data as "wellhead survey" with values ranging from 4.892 to 6.65 feet. The basis for these values is not given. If these values represent an assumed datum, please describe the location and assumed elevation of the benchmark used. You must also note in any tabulated elevation data that these values represent an assumed datum. You list groundwater elevations in the range of 355 to 365 feet in your reports. When the reported groundwater elevation data and depth to water m~asurcmznts are summed;, the resultant wellhead elevation (-surface) values range from approximately 407 to 411 feet above mean sea level (amsl). Review of the Gosford 7.5 minute topographic quadrangle map shows the expected surface elevations in the site vicinity to be between 390 and 395 feet amsl. Please provide documentation regarding the existing wellhead elevation survey so we may understand this discrepancy. This data should describe the reference point at each well and list the reference elevation relative to elevation in feet amsl. Future groundwater depth and elevation data should be rounded to the nearest 0.01 foot. Additional Comments · Based on the lack of detection of EPA Method 601 constituents during two rounds of groundwater sampling, you may discontinue this analysis during future monitoring events. ! I Bl~t:bem U:\UG'IXBEM_file~kKem CohMr. fast ~erv¢ QMR comment.doc Mr. Fast Service Station - 3 - 3 August 1999 · A review of our files shows that our office does not have. a copy of the reports documenting the 20 October 1998 and 11 January 1999 groundwater monitoring events. Please provide a copy of' each report. · 'It is unknown if leaded gas was historically dispensed at the site. Please provide a minimum of two quarters of groundwater quality data for total lead and ethylene dibromide (EDB) at all monitoring wells. If it can be demonstrated that EDB and lead are not present at the site, you may submit a proposal for reducing the. frequency of analysis for these constituents. · AEC submitted a May 1998 Additional Groundwater Assessment Workplan which described the proposed installation of a monitoring well (MW-8) to define the southern limit of the dissolved hydrocarbon groundwater plume emanating from the site. Based on the recent appearance of free phase hydrocarbons at the current southernmost well MW-7, the location of proposed well MW- 8 may be too close to well MW-7 to adequately define the southern extent of the groundwater plume. Please provide a map showing a revised location for the proposed well. · We understand that a vapor extraction/air sparging remediation system has been operating at the site since 7 May 1999. You must provide information documenting the operation and effectiveness of this system. This data may be incorporated in the quarterly monitoring reports currently produced. At a minimum the data should include: 1. Tabulated data regarding air injection and vapor extraction rates and concentrations at each well, and calculated cumulative mass of removed hydrocarbons in sufficient detail so that confirmation calculations may be generated. 2. Dates of remediation system operation including periods of non-operation and an explanation for system down-time. · 3. Data regarding the vacuum measured at each wellhead during the pilot test and initial remediation system startup and any subsequent measurements so that the area of influence of the extraction system may be monitored and adjustments made if necessary. 4. A narrative description of activities associated with remediation system operation during the period covered by the report. Any anticipated changes to the system should also be noted. · Operation of the vapor.extraction system may have an effect on the groundwater elevation in monitoring wells within the zone of influence of the extraction wells as the wells respond to subsurface air pressure that is less than ambient. Please describe your procedures for measuring groundwater depths in future monitoring reports. Descriptions of the time allowed between uncapping a well and when groundwater depth is measured are particularly important. Prior to 1 October 1999, please submit a report addressing the above-requested information. Again, a combined quarterly groundwater and remediation system monitoring report containing this information would be a useful mode of communication. Groundwater analyses associated with the next sampling event should include analysis for ethylene dibromide (EDB), total lead, MTBE, tertiary amyl methyl BEM:bera U:~UGT~EM_files~Kea'n CoXMr. fa.qt serve QMR comment.doc ·. Mr. Fast Service Station 4 3 August 1999 ether (TAME), di-isoPropyl ether (DIPE), ethyl tertiary butyl ether (ETBE), and tertiary butyl alcohol (TBA). If it can be demonstrated that EDB or lead are not present at the site, testing for the applicable constituents can be stopped. If it can be demonstrated that TAME, DIPE, ETBE, and TBA are not present at the site, you may submit a proposal for reducing the frequency of analysis for these constituents. If MTBE, TAME, DIPE, ETBE, or TBA are detected by EPA Methods 8020 or 8021, their presence must be confirmed by GC/MS (EPA Method 8260). Once the presence of MTBE, TAME; DIpE, ETBE, or TBA are confirmed,~ EPA Methods 8020 or 8021 may be used again. As part of overall site characterization, we will require that you sample groundwater for general minerals, nitrate, and total Kjeldahl nitrogen (TKN) during two non-consecutive quarterly sampling events (minimum of six months between sampling events). It is not necessary to sample all monitoring wells for these constituents during these sampling events; a minimum of three wells should be sufficient, and must include the upgradient well. Our records indicate that you are the "primary or active" responsible party for the subject site. Under the new "landowner notification" of Health and Safety Code, Section 25297.15(a) (copy enclosed), you are responsible for notifying all current record owners of fee title to the site of your proposed actions relating to investigation, cleanup, and closure of this site. Prior to 1 October 1999, please notify all current record owners of fee title of your proposed actions at the subject site, and provide us with a complete mailing list of all record fee title owners. You shall copy all future correspondence to us regarding this site to the record fee'title owners and they shall be encouraged to comment on your proposed actions to cleanup and close this site. Also, if ownership of fee title to the site changes prior to closure, you shall within 30 days of recording a change in ownership notify the new owners of your proposed actions relating to investigation, cleanup, and closure of this site and provide to this office, in writing, a complete mailing list of all new record fee title owners. Prior to closure of this site you are required to submit written certification to this office that you have. met the notification requirements of the Health and Safety Code. Should you have any questions regarding this matter, please contact Mr. Bruce Myers of this office at (559) 445-5504. BRUCE E. MYERS Associate Engineering Geologist CEG No. 2102 EnclOsure cc: Ms. Sandy Gill, UST Cleanup Fund, Sacramento w/o enclosure 1,,,,,,~Mr. Ralph Huey, City of Bakersfield Fire Department, Bakersfield w/o enclosure Ms. Debbie Irwin, Advanced Environmental Concepts, Bakersfield w/enclosure ! I BEM:bem U:~.UG'I~F31_Ii!e~K~n CoB'Ir. fast serve QMR comment.doc I Prqiect Number 1801BK04 Aucust 15. 2001 ! ! ! ! ! ! ! ~ APPENDIX D I Boring Logs for Wells MW-8 through MW-11 ! ! ! ! ! ! ! ! E~C Remediation, LLC Appendix u ! PID SAMPLE ID U.S.C.S. LITHOLOQIC Dr-SCRIPTION WELL DEPTH ~NTERVAL LOG -DETAIL (ppm) BLOWCOUNT No samples collected or logged above 20 foot depth · 20 0 6 SP SAND; fine-to-reed; loose; poorly sorted; submund; 6 micas & quartz; not plastic; moist; no odor, no stain; ~ 9 light yellowish brown 10YR 6/4 25 0 12 sP SAND; flne-to-med; loose; poorly sorted; subround; 11 micas & qua~z; not plastic; moist; no odor;, no stain; -- 10 light yellowish brown 10YR 6/4 30 0 13 SP SAND; med-to-coame; loose; poorly sorted; 12 subround; micas & qumlz; not plastic; moist;, no ~ 16 odor, no stain; bmwnlsh yellow 10YR 6/6 -- WELL/BORING ---- AEC ADVA LOG lof2 P.O. BOX 40672 BAKERSFIELD, CA 93384 PROJECT Mr. Fast Gas & Liquors LOCATION 600 Brundsge Lane; Bakersfield, C.,alifomis 93304 -------- WELL/BORING NO. UW-8 SURFACE ELEVATION 393' WELLHEAD ELEVATION 392.01' DATE DRILLED ~0JUN2000 LOGGED BY D. PaJmer REVIEWED BY- A. Le MaV DRILLING COMPANY Melton Drilling DRILLER Delbert Lawson METHOD HOllOW STEM AUGER _ BORE HOLE DIAMETER 8 INCH TOTAL DEPTH 5,5' DEPTH TO WATER: INFI'IAL 47' _ STATIC-43'42' _ CASING TYPE PVC DIAMETER 2-Inch SCHEDULE 40 INTERVAL. 35' TO surface SCREEN TYPE PVC DIAMETER 24nch SLOT SIZE 0.010 Inches INTERVAL_ 55' _TO 35' F1LTER PACK TYPE #600 Idln-dded graded Monterey Sand INTERVAL 55' __TO _ 33' SURFACE SEAL TYPE Bentonite to 5 feet below rede; concrete to ~~ff~'.-C box INTERVAL_ 33' __TO_ 5' ~ NOTES · WELL DEPTH PID SAMPLE ID U.S.C.S. INTERVAL LOG I ITHOLOGIC DESCRIPTION DETAIL (ppm) BLOWOOUNT ~. SAND: fine-to-medium; poorly sorted; compact;, moist; subround; 35 20 '182412 1 SP not plastic; no odor, no stain , - 40 70 13 ! ' SP SAN D: fine-to-medium; poorly sorted; compact; moist; submund; 12 not plsstlc; slight potrol odor/~-'taln a. SAND: fine-to-medium; poorly sorted; compact;, wet; subround; ~:~' 45 &qO 23181 SP nOtwATERPlS~tic; ~'ong g~oline odor, olNe staining u) -- 24 '~' ENCOUNTERED 47 FEET BGL ,r __ 55 TOTAL DEPTH 55 FEET AEC ADVANCED ENVIRONMENTAL CONCEI~IS WELL/BORING LOG 2of2 P.O. BOX40672 BAK~RSF/~t n, CA PROJE~T Mr. F~qt Ges & Llquor~ I_~ATION Brundago WELL/BORING NO. MW-8 SURFACE ELEVATION 393' .. wELLHEAD ELEVATION. DATE DRILLED 30JUN2000 LOGGED BY D. Palmer REVIEWED BY ^, Le May DRILUNG COMPANY MeRon Drlllln~ DRILLER Dolbort Law~on M~R-IOD HO[LOW STEM AUGER BORE HOLE DIAMETER 8 INCH TOTAL DEPTH ~5' ... DEPTH TO WATER: INmAL 47' STA'QC 4~.42' CASING TYPE PVC DI~,M ETER 24nch SCHEDULE 40 INTERVAL 35' TO surface SCREEN TYPE PVC DIAMETER 2-Inch SLOT SIZE 0.010 Inches INTERVAL.INTERVAL 55'55' TOTO 33'35' FILTER PACK TYPE ~f~00 kiln-dried graded Monterey Salld 33' SURFACE SEAL TYPE Berttonlte to 5 feet beJow grade; concrete to grade wJloctdng [~,~c box INTERVAL TO. NOTES WELL DEPTH' PID - 'J -SAMPLE IDIINTERVAL U.S.C.S.LoG LITHOLOGIC DEscRIPTION DETAIL ' (ppm) _~LOVVOOUNT " 5 , 10 2O 25 No samples C°llected or logged above 30 toot depth 30 0 16 1 SP ·SAND; meal.to-coarse; compsct; poorly sorted; 13 subround; micas & quaJ~, not plas'dc; moist;, no 11 odor;, no stain; brownish yellow 10YR 6/6 AEC VA~CEOE VJRON ENTALCONCE WELL/BORING LOG 1 of 2 P.O. BOX40672 BAKERSFIELD, CA 93384 PROJECT Mr. Fast Gas & Uquors LOCATION 800 Brundage lane; Bakersfield, Callfomla 93304 WELL/BORING NO. UW-9 SURFACE ELEVATION 393' WELLHEAD ELEVATION 392.09' DATE DRILLED 30JUN2000 . LOGGED BY D. PaJmer REVIEWED BY_ ~', Le May DRILLING COMPANY Melton Drilling DRILLER Delbert Lawson ... METHOD HOLLOW STEM AUGER BORE HOLE DIAMETER 8 INCH .. TOTAL DEPTH 55' DEPTH TO WATER: INITIAL 45' STATIC ~44.02' _ CASING'TYPE PVC DIAMETER 24nch SCHEDULE 40 'INTERVAL ' 35' ' TO sudace SCREEN TYPE PVC DIAMETER 24nch SLOT SIZE 0.010 Inches INTERVAL 55' TO 35' FILTER PACK TYPE ~600 Idln-drled graded Monterey Sand INTERVAL 55' TO 33" _ SURFACE SEAL TYPE Bentonite to 5 feet below grade; concrete to grade w/Ioddng [~c box INTERVAL 33'.. ....TO 5' ~ I NOTES ~ WELL PID SAMPLE ID U.S.C.S, INTERVAL LOG LITHOLOGIC DESCRIPTION DETAIL DEPTH (ppm) _m_OWOOUNT ~ SAND: fine-to-medium; poorly sorted; compact; moist;, submund; 35 0 ~2~I SP not plasttc; no edor; no stain o I SP SAND: fine-to-medium; poorly sorted; compact;, moist; submund; not plastic; slight petrol odor/stain o WATER ENCOUNTERED 45 FEET BGL r~ 4~ 0 I ' SAND: fino-to-medium; poody sorted; compact;, wot; suhround; ~. not pl~ti¢; mrong g~olino odor;, olNo ~t~ining ~;'~ TOTAL DEPTH 55 FEET 60 AEC WELL/BORING LOG P.O. BOX 40~7£ BAK~FI$~tF-t D~ GA ~RO. IE~I' Mr. F~t G~ & Llquor~ LOC^TION 600 0rund~g. Lano; I~k~m'fi~ld, Callfomi~ ~04 DA'IT_ DRILLED 30JUN2000 LOGGED BY D. Palmer REVIEWED BY A, Le May DRILLING COMPANY Melton Drilling DRILLER Delbert Lawson METHOD HOLLOW STEM AUGER BORE HOLE DIAMETER 8 INCH TOTAL DEPTH 55' .- DEPTH TO WATER: INmAL ?5' STATIC 44.02' CASING TYPE PVC DIAMETER -24rich SCHEDULE 40 INTERVAL 35' TO sudace SCREEN TYPE FVC DIAMETER 24nch SLOT SIZE 0.010 Inches INTERVAL 55' TO 35' FILTER PACK TYPE ZOO Idln-dried graded Monterey Sand ' ' INTERVAL 55' ~ _TO: 33' SURFACE SEAL TYPE Bentonite to 5 feet below grade: concrete to grade w/loddng traffic box INTERVAL 33' TO NOTES WELL DEPTH· PID SAMPLE ID I U,S.C.S. ~NTERVAL LOG UTHOLOGIC DESCRIPTION D~I'AIL (ppm) a~owcoum' 3 SP SAND:. med-to-coarse; poorly sorted; mlcaceous; dry; subround; 2 loose; no ~n; no odor, light brown; 7.5YR 6[3 1 0 0 9 I SP * SAND: med-to-coame; poorly sorted; mlcacoous; moiSt; 9 submund; loose; no ~a~in; no odor, light brown; 7.5YR 6[$ -- 7 ~ SP 8AND: med-to-coamo; poody sorted; mies~ous; moi~ O 5 subr0und; loose; no stain; no odor;, light brown; 7.SYR 6/3 ~- 8 ~.0 0 6 I SP SAND; fine-to-med; loose; poorly sorted; Subround; § micas & quartz; not piss'dc; moist;, no odor, no stain; -- 9 light yellowish brown 10YR 6/4 25 0 12! ' SP SAND; fine-to'reed; loose; poetry sorted; subround; " 11 micas & quartz; not plastic; moist; no odor, no stain; 10 light yellowish brown 10YR 6[4 30 0 131 SP SAND; med.to-coame; loose; poody sorted; 12 subround; mIe~ & qusr~; not pl~flc; moist;, no 16 odor' no stain; brownish yellow 10YR 6/6 AEC , OV, NCEOE VW O V NrALCO C , , ' WELL/BORING LOGof 2 P.O. BOX 40672 BAKERSFI~'LD, CA 93384 PROJECT Mr. Fast Gas & Uquors LOCATION 600 Brundage Lane; Bakemfteld, California 933O4 WELL/BORING NO. MW-10 SURFACE ELEVATION :~:~' WELLHEAD ELEVATION 390.96' DATE DRlU.ED 29JUN2000 LOGGED BY D. Paimer REVIEWED BY A, Le MaY DRILLJNG COMPANY Melton Drlllin~ DRILLER Delbert Lawson METHOD HOLLOW STEM AUGER ... BORE HOLE DIAMETER 8INCH TOTALDEPTH 55' DEPTH TO WATER: INmAL 47' STATIC 45.51' CASING TYPE PVC DIAMETER 24n(;~ SCHEDULE 40 INTERVAL 35' TO surface SCREEN TYPE PVC .DIAMETER 2-Inch SLOT SIZE 0.010 Inches INTERVAL 55, .TO 35' FILTER PACK TYPE ~600 Idln-drled graded Monterey Sand INTERVAL 55' TO 33' SURFACE SEAL TYPE Bentonite to 5 fee~ below grade; concrete to grade w/loddng traffic box INTERVAL 33' TO NOTES WELL DEPTH' PID sAMPLE ~D I U.S.¢.S, DETAIL (ppm) ~NTERVAL LOG LITHOLOGIC DESCRIPTION BLOWCOUNT SAND: fine-to-medium; poorly sorted; compact; moist;, submund; 35 0 18~ sP not plastic; no odor;, no stain 24 12 40 0 .131 SP SAND: fine-to-medium; poorly sorted; compa~ moist;, submund; 121 not plastic; slight petrol.odor/stain o c3 45 0 18~ SP SAND: fine-to-medium; pooHy sorted; compact;, wet; subround; zB not plastic; strong gasoline odor;, olive staining o3 -- 24 ~' WATER ENCOUNTERED 47 FEET BGL . 50 0 ~2~.~, SP SAND: fine-to-very fine; poor,/graded; compact; 10% s~lt; wet; light olive bmw~; 2.5Y 5/3 SILTY CLAY: Needy drT;, moderately piss'dc;, no odor, no stain; 55 0 26 [] light olive brown 2.5Y 5/3 28 -- 30 TOTAL DEPTH 55 FEET AEC ADVANCED ENV/RONMENTAL CONCEFTSp. o. BOX40672 BAKERSFIELD, CA 9'3384WELL/BORING LOG 2of2 PROJECT Mr. Fast Gas & Uquors LOCATION 600 Brundage Lane; Bakersfield, California 93304 _ W LL OR NG NO. MW-10 SURFACE EL"VA'nON 393' WELLHEAD ELEVA ON DATE DRILLED ~gJUN2000 LOGGED BY. D. Palmer REVIEWED BY A. Le May DRILUNG COMPANY Melton Drilllnf3 DRILLER Delbert Lawson METHOD HOLLOW STEM AUGER _ BORE HOLE DIAMETER 8INCH TOTALDEFTH 55' DEPTH TO WATER: INITIAL 47' .. STATIC 45.51' CASING TYPE PVC DIAMETER 2-Inch SCHEDULE 40 INTERVAL 35' TO surface SCREEN TYPE PVC DIAMETER 1 2-1nd3 SLOT SIZE 0.010 Inches INTERVAL 55' TO 35' FILTER PACK TYPE #600 Idln-dded graded Monterey Sand INTERVAL. 55' TO 33' SURFACE SEAL TYPE Bentonite to 5 feet below' grade; concrete to grade w/Ioctdng 13'afflc box INTERVAL. 33' ,TO 5' NOTES WELL PID SAMPLE ID J ' U.S.C.S. ' DEPTH (ppm) INTERVALI LOG LITHOLOGIC DESCRIPTION DETAIL BLOWCOUNT not plastic; no odo'r; no stain O ~! ~ -- 4~ 0 ~41 SAND: fino-to-modium; poody ~ortod; compact; wot; ~u~round; <221 not plastic; no odor;, no stain co , 211 O ~0 100 ~_q I S~ SAND: 10% ~llt; fino-to-mod; don,o; wot; no~ pla~i¢; -- 241 V I:~mloum odor, no ~n WATER ENCOUNTERED 51 FEET BGL 55 100 26 ! 28 -- 30 60 222419 i TOTAL DEPTH 60 FEET iAEC WELL/BORING LOG P.O. BOX 40~72 BAK~FISFIELD, ~A ~ PROdECT ~r. Fast O~ & t.lquom I.OC^TION §00 Bmnd~g~ I.~; I~or~lald, ~llfoml~ I WELL/BORING NO, MW-11 SURFACE ELEVATION 303' WELLHEAD ELEVATION 389,40' DATE DRILLED 29JUN2000 LOGGED BY, D, Palmer REVIEWED BY A, Le M~Y DRILUNG COMPANY Melton Drilling DRILLER Delber~ Law~on ME-rHOD HOLLOW STEM AUGER i BORE HOLE DIAMETER 8 INCH TOTAL DEPTH 60' DEPTH TO WATER: INmAL 51° STATIC 45,77' CASING .TYPE PVC DIAMETER 24n{:~ SCHEDULE 40 INTERVAL 40' TO surface SCREEN TYPE ~ DIAMETER 2,1rich SLOT SIZE 0,010 Inches INTERVAL 60' TO 40' FILTER PACK TYPE ZOO kiln-dried graded Mont~ey Sand INTERVAL 60' .TO I SURFACE SEAL TYPE Bentonite to $ feet below grade; concrete to grade w/locking ffafflc b<~x INTERVAL 38' TO 5' NOTES I ,Project Number 1501BK04 August 15. 2001 ! ~ . ! ! ! ! ~ APPENDIX E From AEC, 2000b Soil Sample Analytical Results - June 2000 i E2C Remediation, LLC APPendix '1 I Continuing Groundwater Assessment Advanced Environmental Concepts, Inc. I 4.5 Groundwater Flow Direction Depth to water was measured in each monitoring well using a Slope Indicator Co. Model 51453 water I level indicator. The top of each casing was marked on the north side with indelible ink to ensure consistent measurements between sampling events. Elevations to the top of each well casing were surveyed to a known benchmark by Delmarter & Diefel Civil Engineers and Surveyors on July 21, 2000. Based on the July 3, 2000 measured depths, the groundwater flow direction was calculated I to be South 43 degrees East with a hydraulic gradient of 2.1'/100'. The July 2000 hydraulic gradient is consistent with previous gradient calculations historically at the Mr. Fast Gas facility over the past several years. i 5.0 ANALYTICAL RESULTS '1 5.1 Soil Analysis Results Soil sample analyses were performed by Zalco Laboratories, Inc. to determine the presence and _ I concentration levels of Total Petroleum as gasoline (TPH-g) and volatile aromatics Hydrocarbons (BTXE and MTBE) using EPA Methods 8015m and 8020A methods, respectively. The analytical results are summarized in Table 9. Units reported for total gasoline-range hydrocarbons are I presented in milligrams per kilogram (mg/kg) which are equivalent to parts per million (ppm). Benzene, toluene, ethylbenzene, xylenes, and MTBE are reported in micrograms per kilogram (pg/kg), or parts per billion (ppb). Table 9 I Soil Sample Analyses Samples Collected June 29 & 30, 2000 I Sa~mpleID: I TPH-~Ias I Benzene I Toluene I Eth¥1benzene I TotalXylenes I MTBE MW-8-20' <10 <0.005 <0.005 <0.005 <0.015 <0.005 I MW-8-25' <10 <0.005 <0.005 <0.005 <0.015 <0.005 MW-8-30' ' <10 <0.005 <0.005 <0.005 <0.015 <0.005 '1m MW-8-35' <10 <0.005 <0.005 <0.005 <0.015 <0.005 MW-g-30' <10 <0.005 <0.005 <0.005 <0.015 <0.005 I MW-9-35' <10 <0.005 <0.005 <0.005 <0.015 <0.005 MW-9-40' <10 <0.005 <0.005 <0.005 <0.015 <0.005 I MW-9-45' <10 <0.005 <0.005 <0.005 <0.015 <0.005 MW-10-30' <10 <0.005 <0.005 <0.005 <0.015 <0.005 I' MW-10-35' <10 <0.005 <0.005 <0.005 <0.015 <0.005 I Project: AEC 93C-1355 1 1 · ENVIRONMENTAL CONCEPTS WITH DESIGN IN MIND* I 4400ASHE ROAD #206 CA 933~3 BAKERSFIELD. 661/831-1646 FAX 661/831-1771 Continuing Groundwater Assessment Advanced Environmental Inc'. Concepts, Table 9 (continued) Soil Sample Analyses Samples Collected June 29 & 30, 2000 Sample ID: I mPH-~las I Benzene I Toluene I Eth¥1benzene I Total Xylenes I MTBE MW-10-40' <10 <0.005 <0.005 <0.005 <0.015 <0.005 ~ MW-10-45' <10 <0.005 <0.005 <0.005 <0.015 <0.005 <10 <0.005 <0.005 <0.005 <0.015 <0.005 MW-10-50" MW-10-55' <10 <0.005 <0.005 <0.005 <0.015 <0.005 MW-11-30' <10 · <0.005 <0.005 <0.005 <0.015 <0.005 MW-11-35' <10 <0.005 <0.005' <0.005 <0.015 <0.005 MW-11-40' <10 <0.005 <0.005 <0.005 <0.01 5 <0.005 MW-11-45' <10 <0.005 <0.005 <0.005 <0.015 .<0.005 No detectable concentrations of gasoline constituents were present within soils collected from any boring at depths si§nificantly above the capillary fringe during this phase of the assessment. SamPles collected at the capillary fringe within well MW-8 indicated the presence of a significant 'smear' zone · .... of gasoline compounds within soil encountered at 40 and 45 feet below §fade. Free-staadin§ groundwater was measured at 43.42 feet below grade level following the installation of the well casing in this location. This boring is situated approximately mid-way between MW-1 and MW-7, both of which have historically contained free product and the presence of gasoline compounds within the samples near the water table in this area was anticipated prior to drilling. Trace concentrations of volatile organic compounds were also 'present within soil samples collected within the deeper portion of well MW-11, beginning at 50 feet below grade. MW-11 is located approximately 100 feet. south of Brundage lane and down §radient from MW-7. No detectable concentrations of gasoline-range petroleum or volatile organic compounds were present within any sample collected from wells MW-9 or MW-10, indicating the existing contaminant plume has not migrated as far west as the location of MW-9 or as far east as MW-10. 5.2 Water Analysis Results Water sample analyses were performed by Baseline On-Site Analysis to determine the presence and concentration levels of Total Petroleum Hydrocarbons as 9asoline, (¥PH-g) and volatile aromatics ' Prelect: ^lC 93C-1355 ] 2 · 'ENVIRONMENTAL CONCEPTS WITH DESIGN IN MIND' 4400 ASHE ROAD ¢206 ' BAKERSFIELD. CA 93313 661/831-1646 · FAX 661/831-1771 I project Number 1801BK04 A(~gust 15. 2001 APPENDIX F January 2001 Surveyor's Plot .! E~C Remediation, I. LC Appendix F 39362 TC · )93.03 FL CO N - 5122.63 ' E - 4851,15 O 395.01 ~w-2 N -- 50~7.08 FL DWY E - ~868.57 G 394.78 ~ 4879.~ ~ 594.0~ ~w-1 ~ - ~.00 - 493~70 G 394,14 MW-4 ~'; . ~ 393.76 ~ 594.64 MW-6 N = 5016.79 ~ ~w-3 ~DRi~WAY E - 4903.22 TBU ~ - t~ ' , ) FL C0 ~ ~ ~ ~ FL D~ FL i ~94.12 ~ ¢ ~ '~'~ 392.92 ~ = MONITORING WELL ~o~ ~ '~ 0 = VAPOR EXTRACTION ~LL ~ BRUNDAGE LANE 593 95 DWY 393. 72 , 392.82 0~ ~qb' FL AC DIKE n%. ~ FL DIKE FL CO 592.31 ~ 5g2. H B~M~K ONTHE NORTH SIDE OF BRUNDAGE LANE AT KERN ISLAND CANAL UNDER CROSSING. ELEVATION = 396.41' N = 48~.52 [ - ~9.87 ~ 39L35 Project Number 1801BK04 A~lCust 15. 2001 APPENDIX G Boring Logs - Wells MW-11 R, MW-12 through MW-14 and SVE & AS Wells E2C Remediation, LLC Appendix G NUMBER: ~' ENV~RONME]'~'~/./ENGINEERJNGCON-,~ULTANT~ BORING LOG · ~NA~UE ,' · ~ ~~ F~ ~.~07 SHE~ / O~ ~ ~ ~" ~ ~ ~LL CONS~UC~ON ' ~NG M~ ~ ~ ~ 8~ ~D I~ FIL~ ~ ~D Ih~ d,y - - ~ ~-~, vc,y I~o~, h.'31~ D~,.I~ - &ANn (~55,/~ ~ pepy~ ~c/'~ ~,~.'.~ - ' ~ BORING / WELL ~ ENVlRONMENTALIENGINEERINGCONSUI.TANTS BORING LOG ~-,/~ 382 MAR33N AVENUE · TEI~ 4~8.3~7.5700 FA~ 408~7~707 SHEET 7-OF 7_ ~ ) ~3.CX c.&y, cc- ~1 BORING I WELL ~ ~ NUMBER: 382 MARTIN AVENUE , SANTA CLARA, CA g5050-3112 TEL:408.327.5700 FAX:408.327.5707 SHEET I OF~. PRelECT . PROdiGY NUMBER S'T'ART I~k, TE COMF~"r'ION DATE 8.4MPt_ING METHO0 '~ BACI(FIU. MATERIAL. 8LOT 81ZE AND Ih H=~'VAL FILTER MA~ AND t~AL · BORING / WELL ~/~~.~ '~~ ~"°""~-' ~"~'"~"~~ ,~, ^~.~ ~~ B OR IN GLO G ~: ~.~7~ F~ ~.~7.~7 SHE~ - ~7 - ~o ~b ~ Ooc ~e~/,'~ ~"~ I~o~c~ ~ ~, - ~: ~ ~ ~-~ 17o I ' · j~ NUMBER: ~ ENVlRONMEN'FAL/ENGINEERINGCONSULTANTS BORING LOG 382 MARTIN AVENUE ~ j~ SANTA CLARA, CA 95050-3112 TEL:408.327.5700 FAX:408.327.5707 SHEET ! OF~ PROJECt' . PI~J~.-~¥ NUM~.R 8'FART QATE COMPt. ETION BORING I~..~ H STATIC GROUND~VATER DEFTH ~_~,,,~, ( ~r.'.~,~'Z~ A~L~ro WELL CONSTRUCTION DRILI.~NG EQUIPMENT BORING DIAMI= I~.H Type AND DIAMP.. i c.~ OF W~-L CA~ING SANITARY ~_J~ MA I I~[I,N. AND IN I r-~/AL SAMPLING ME-T'HOO ,,,.I BACI(FII.L MATERIAL ~ 81ZE. AND I1',11 r.~'V,N,. FILTER MAI ~ AND IN _ ( BORIN~ / WELL- NUMBER: I ~,o..~.,~,.~.~co.~u,,~r~ BORING LOG ,~t,.9- ~ · 382 MARTIN AVENUE' ~ SANTA CLARA. CA 95050-3112 TEL: 408.327.5700 FAX: 408.327.5707 SHEET '40F~ ·, (.~ "~d"~'~., !,~,,~ ~ .~l.'skli; /M") -- - 35" , I '~t~~ BORING I WELL , NUMBER: ) ~.o..~,~,~,.~.~co~~ BORING LOG ~ ~-, ~ ~ ~N A~UE ~ ~ ~A~~~112 - _ I -- I 15-- _ --'-'---- ~'~RING I NUMBER: ~.o.,,~r~,~.~,.~.~.~co~u~,,~ BORING LOG ~ ~.~ ~ ~ MARTIN AVENUE SANTA CI.N:IA. CA 95050-3112 SHEET TEL: 408.32"/.5'/00 FAX: 408.327.5'/07 REMARK DESCRIPTION D~,' I I~ ! BORING / WEll ' NUMBER: ~ ~N A~UE A ~~112 ~ ~ ~.~ F~ ~.~ SHE~ ~ OF ~ ~ ~~ ~ ~LL CONS~UO~ON ' BORING / WELL NUMBER: 382 MARTIN A~NUE ~A~ ~~112 ~ ~.~ F~ ~.~7.~ SHE~ ~ OF~ . - I BORING I WELL ~' NUMBER: ~ EI~RONM~AL/ENGINF_E~N6CONSULTmrS BORING LOG A.s- ~ 382 MARTIN AVENUE , SANTA CLARA, CA g5050-3112 , TEL: 40~.327'.5700 FAX: 408.327.5707 SHEET ) OF~. PROJE% . PROJECT NUMBER 8'TART E~ATE COMPt. E~ON DA'rE PROJECT LOC, ATIO¢~I BORING DEPTH STATIC GROUNDWATER DEPTH 8AMI~.ING METHO0 ~ BACI(FILL MATERI.N. 8LOT 81ZE AND IN'rER~AL '~ FILTER MA'I"ERtAL AND I~AL i BORING / WELL · NUMBER: I , BORING / WELL NUMBER: ~. ~,o..~.,,.~..~.o co.m~,.m BORING LOG ,45- 382 MARTIN AVENUE 't~ ~l,sANTA cLARA' C~ g5050'3112 · TEL:408.~Lrt'.5700 FAX:~.~07 SHEET' I OF'?.. PROJECT NUMBER ~TART ~,TE COMF~Lt=~Oi~I "~/~,,-. F"~-r I~o! ~l~ ~//~¢/o~ u//~/o~ PROJECT LOCATION BORING ~ STATIC GROUNDWATER DP-P'iH o...u.a COmR,~r~ '~ ~.j. WELL CONSTRUCTION ~ DI~U. JNG EGUIPMENT BORING D~ T~I:~ AND DIAMETER OF W~J. C,A~ING &AJ~IrrARY ,.~_AL I,~A.'TERIAL AND IN H- ~w'AL 8,A~PI. ING ME'THO0 'J BACI(iqL.L MATERLAL 8LOT 81ZE AN~ INTERVAL IqLTER MA'I'EI~AL AND IN LOGGED BY SUPERVISED BY PERFORATED ~ ,~ WELL I~( ~'- ~1~; ~.o. ~,,~'~- .5-~.5 - Co 1,5' _ $ - 1 · BORING / WELL NUMBER: ~.o..~,~.~,.E~.Gco.su~,'.,= BORING LOG A.s- -~,' ~ ~N A~NUE ~A~ ~~112 ~ ~.~ F~ ~7.~ SHE~ ~ OF ~ DESCRI~ON ~ ~ , ~ - ~z~:cu/~, ~-~-~c ~ ~,~ cLAYFy ULT: I:~ ~, u~,~ ~.,,~ _ ' - ~r~,'~ , ~ ~a % ~I.~L'~ ~:..h _ ~ ~"~' ~"~ ~+, w,y _ ~.>.~t =~/~" I ' BORING / WELL NUMBER: ~ ~N A~UE ' DESCRImlON ~ ~ ~t ~ ~ ~ - I~ B~RING / WELL NUMBER: ~V~RONMENT.,~.JENGINEF_RJNGCONSULTAN"F~ BORING LOG '1 /~ .~ ~ ,~ ~ ~N A~NUE ~A~ ~~112 · , ~ ~.~7.~ F~ ~.~7.~7 SHE~ 7 OF ~ I profect Number 1801BK04 August 15. 2001 I I I I I I I APPENDIX H , I Soil Analytical Laboratory Reports- April 2001 I I I I I I I E~C Remediation, LLC Appendix / I I HalcYon Laboratories Chain d r Client Name: E2C, Inc 661.831.690t~' fax 661.831.6234 Analysis-Requested ~" ~'~'-~? Sample Matrix--' Project Name: /'. ,5~" ~'~ ~ ~ Aqueous Client Address: 5640 District Blvd., Suite 102. Bakemfield, CA 93313 ~ ~ ~ ~ ~ ~ . ~ so, Proje~ Manager: = ~ ~ ~ ~ Acidified Sampler Name: ~ ~]~. Sample Date Sample Time Sample Description and Container Type ~ ~ ~ ~ > ~ ~ ~ ~ Comments ~ ~'7'~ As-I-lO Turnaround Time Requested: 24 Hour ~ 48 Hour 5-D~y Standard~ ' Relinquished By: '~_, Date: ~. ~.C-o I ~ Relinquished By: Date: Halcyon Laboratories Chain of Custody Form Client Name: E2C, Inc 661.831.6906 fax 661.831.6234 Analysis Requested Sample Matrix Project Name: /40/'. )"-~,(,~- (~'~ ~, s '" Aqueous Client Address: 5640 District Blvd., Suite 102. Bakersfield, CA 93313 ~. ~. ~ ~' ~ < < co Q.. O., v Project Manager: ~ ~_. ~ ., ,. ,. ,. ,,, ~ ~ ~ Acidified Sampler Name: · '=>., :>, U.I X · U.J ~_. -r 'r ~. x x · ~- a. o. o o o ¢- ~ "' Sample Date Sample Time Sample Description and Container Type co :~ ~- ~ > ~ ~- ~ ~' ~ Comments Turnaround Time Requested: 24 Hour 48 Hour __ 5-Day __ Standard,z,2~__._ Relinquished By: '~,_¢~ Date:L{.-).~-ol I Relinquished By: Date: i Received ~.~~ Date: ~,.-~,,,~ Received By: 'Date: .HalcYon Laboratories Chain of Custody Form Client Name: E2C, Inc 661.831.6906 fax 661.831.6234 Analysis Requested Sample Matrix Project Name: ~' ~' Aqueous ClientprojectAddresS:Manager:5640~'\~,District~ BIvd.,~Suitet,o(_¢ (~k.,'~102' Bakersfield, CA 93313 ~'o_< ~ ~~< ~ ~~ ~<~ ~<~ ~ ~<~ ~ ~ ~ ~.¢~ ~ Soil ~ ~ ~ Acidified Sampler Name:. Sample Date Sample Time Sample Description and Container Type ~ = ~ ~ > ~ ~ = ~ Comments · I Turnaround Time Requested: 24 Hour 48 Hour 5-Day ~ Standard /- Relinquished By: '.'~~ __-- Date:L~. ~)..~-¢/ IRelinquished By: Date: Received~...~~/l.q~~.. Dato:~~ Received By: Date: Halcyon Laboratories, Znc, Laboratory Report Certification # 1920 CLIENT FaC, Inc. Project Name: Mr. Fast #1801BK01 5640 District Blvd, Suite 102 Bakersfield, CA 93313 Matrix: Soil Sampled by: Bill Cooper TESTS: TPH Gas by EPA 8015M BTEX Analysis: 5/2/01 Date of Report: 5/7/01 Units: mg/Kg Sample #: 2I~1-792 ' 2K1-794 2K1-796 2K1-799 2K1-801 2K1-804 Date Sampled: 4/25/01 4/25/01 4/25/01 4/25/01 4/25/01 4/25/01 DL rog/Kg Sample Description: AS145 AS1-55 AS1-65 VE3-15 VE3-25 VE3-37 Benzene NA NA NA NA NA NA 0.005 Toluene NA NA NA NA 'NA NA 0.0!0 Ethyl Benzene NA NA NA NA NA NA 0.010 m,p,o Xylenes NA NA NA NA NA NA 0.010 TPH Gasoline 5.3 592 117 ND ND ND 0.5 TPH Diesel NA NA NA NA NA NA 0.5 MTBE NA NA NA NA NA NA 0.05 Surrogate Recovery % 90 103 112 86 90 84 Sample #: Date Sampled: DL rog/Kg Sample Description: Benzene 0.005 Toluene 0.010 Ethyl Benzene 0.010 Xylenes 0.010 m,p,o TPH Gasoline .0.5 TPH Diesel 0.5 MTBE 0.05 Surrogate Recovery % Sample #: Date Sampled: DL rog/Kg Sample Description: Benzene 0.005 Toluene 0.010 Ethyl Benzene I 0.010 m,p,o Xylenes 0.010 TPH Gasoline 0.5 TPH Diesel 0.5 MTBE 0.05 Surrogate Recovery % DL = Detection Limit ~ ~% ~ ND - Non-Detect at given DL NA - Result not available rd I Halcyon Laboratories, nc. I Laboratory Report Certification # 1920 I CLIENT E2C, Inc. Project Name: Mr. Fast #1801BK01 5640 District Blvd, Suite 102 · Bakersfield, CA 93313 Matrix: Soil · Sampled by: Bill Cooper I TESTS: TPH Gas by EPA 8015M BTEX Analysis: 5/7/01 Date of Report: 5/9/01 I Units: mg/Kg Sample #: 2K1-860 2K1-861 2K1-862 2K1-863 2K1-855 2K1-857 2K1-858 i Date Sampled: 4/26/01 4/26/01 4/26/01 4/26/01 4/26/01 4/26/01 4/26/01 DL rog/Kg Sample Description: MW14-65 MW14-70 MW14-75 MW14-78 MWllR45MWllR-55MWllR-60 Benzene NA NA NA NA NA NA NA 0.005 Toluene NA NA NA NA NA NA NA 0.010 I Ethyl Benzene NA NA NA NA NA NA NA 0.0 10 m,p,o Xylenes NA NA NA NA NA NA NA 0.010 TPIt Gasoline 0.58 ND ND ND ND 3.0 0.69 0.5 I I TPIt Diesel NA NA NA NA NA NA NA 0.5 MTBE NA NA . NA NA NA NA NA 0.05 Surrogate Recovery % 103 94 103 89 99 92 101 I Sample #: 2K1-859 2K1-866 2K1-867 2K1-865 2K1-868 2K1-877 2K1-878 Date Sampled: 4/26/01 4/26/01 4/26/01 4/26/01 4/26/01 4/27/01 4/27/01 DL mg/Kg' Sample Description: MWllR-65 MW12-50 MW12-55 MW12-60 MW12-65 MW13-50 MW13-55 I Benzene NA NA NA NA NA NA NA 0.005 Toluene NA NA NA NA NA NA NA 0.010 Ethyl Benzene NA NA NA NA NA NA NA 0.010 I Xylenes NA NA NA NA NA NA NA 0.010 m,p,o TPll Gasoline ND 677 874 597 ND ND 0.96 0.5 TPH Diesel NA NA NA NA NA NA NA 0.5 I MTBE NA NA NA NA NA NA NA 0.05 Surrogate Recovery % 87 . 110 83 96 89 87 88 Sample #: 2K1-879 2K1-880 I Date Sampled: 4/27/01 4/27/01 DL mg/Kg Sample Description: MW1340 MW13-65 Benzene 'NA NA 0.005 I Toluene NA NA 0.010 Ethyl Benzene NA NA 0.010 m,p,o Xylenes NA NA 0.010 I TPH Gasoline <0.5 ND 0.5 TPIt Diesel NA NA 0.5 MTBE NA NA 0.05 I. Surrogate Recovery % 85 85 DL -- Detection Limit ~~. ~ ) I ND - Non-Detect at given DL NA - Result not availal~l, q Laboratory Manager: Drew J. Picar~---' Halcyon Laboratories, ]:nc. Laboratory Report ' Certification # 1920 CLIENT FaC Inc. Project Name: Mr Fast 5640 District Blvd Suite 102 Bakersfield, CA 93313 Matrix: Aqueous Sampled by: Gabriel Halcon NA TESTS: TPH Gas by EPA 8015M BTEX Analysis: 4/26/01 Date of Report: 5/7/01 Units: ug/L Sample #: 2K1-987 2K1-881 2K1-882 2K1-883 Date Sampled: 4/25/01 4/27/01 4/27/01 4/27/01 DL ug/L MW-12 MW-13 MW-11R MW-14 Sample Description: Benzene NA NA NA NA 0.5 Toluene NA NA NA NA 1.0 Ethyl Benzene NA NA NA NA 1.0 m,p,o Xylenes NA NA NA NA 1.0 TPH Gasoline 17,443 5,286 6,214 1,789 50 TPIt Diesel NA NA NA NA 50. MTBE NA NA NA NA 5 Surrogate Recovery % 103 104 96 105 Sample #: Date Sampled: DL ug/L Sample Description: . Benzene 0.5 Toluene 1.0 Ethyl Benzene 1.0 m,p,o Xylenes 1.0 TPH Gasoline 50 TPH Diesel 50 MTBE 5 Surrogate Recovery % Sample #: Date Sampled: DL ug/L Sample Description: Benzene 0.5 Toluene 1.0 Ethyl Benzene 1.0 m,p,o Xylenes 1.0 TPH Gasoline 50 TPH Diesel 50 MTBE 5 Surrogate Recovery % ~ DL = Detection Limit ~~~_3~~ ND - Non-Detect at given DL NA - Result not available ~ Laboratory Manager: Drew J. PicardY__. Halcyon Laboratories Chain of Custody Form Client Name: E2C, Inc 661.831.6906 fax 661.831.6234 Analysis Requested SamPle Matrix § ~ ~ ~-~ Aqueous Client Address: 5640 District Blvd., Suite 102. Bakersfield, CA 93313 v ~o ~ ~ ~ ~ Soil Pr0je~ Manager: ~ ~// ~ ~::'*~ ~ ~ ~ ~ ~ ~: ~ ~ ~ ~ ~ Acidified Sampler Name~ ~ ,'re ;F ~l( Sample Date Sample Time Sample Description and Container Type ~ ~ ~ ~ > ~ ~ ~ 3 ~ Comments ~ i ~ Relinquished ~~.~. Date:~-~7_o/ Relinquished By: Date: '~, Received By: '~~~~ Date:~_~/_ Received By: Date: Halcyon Laboratories 'Chain of Custody Form . Client Name: E2C, Inc 661.831.6906 fax 661.831.6234 Analysis Requested Sample Matrix Project Name: /1~ / /~ ' ~ ~ ~ · P4,,~Jx ~.i-~,,_~~ ~ ~ ~8 ~ Aqueous Client Address: 5640 Distri~ Blvd., Suite 102. Bakemfield, CA 93313 ~ ~ ~ ~ ~ ~ .... ~ ~ ~ ~ ~ ~ ~ ~ . , ~so, Proje~Manager: q~5~.q < = ~ ~ = F¢ ~ ~1~ : : ~ ~ Acidified Sampler Name: /~%S x ~ o ~ =~ ~ ~ ~ ¢ xV Sample Date Sample Time Sample Description and Container Type m = ~ P > m ~ = 3 ~ Comments J Turnaround Time Requested: 24 Hour __ 48 Hour ~ 5-Day __ Standard?~__ " I Relinquished BZ:_.~O~ Date:l¢-)'-7-o, I Relinquished By: Date: Received By: Date: ~_)...~:::>j Received By: Date: Halcyon Laboratories Chain of Custody Form Client Name: E2C, Inc 661.831.6906 fax 661.831.6234 Analysis Requested Sample Matrix Project Name: .A0/.. ~"~.,~Jr. (~-~, ,, ~' ~' ~' ~ 8 ~ Aqueous Client Address: 5640 District Blvd., Suite 102. Bakersfield, CA 93313 ~ ~ ~ Proje~Manager: , I.I L~F~,~' < : ~ - - ~ 8 ~ ~ ~. , ~ ~ ~ . ~: = ~ ~ ~ ~ Acidified Sampler Name: ~0¢/¢, ¢( ~ o ~ ~ ~ ~ ~ ¢ - ~ ~ % ~ x x ~ ~ ~ o o ¢ ~ ~ Sample Date Sample TimeSample Description and Container Type => p > ~ ~ = 3 ~ Comments ,~ ~,~ .-~ ~ ~o-- ,~ -~ ~' X ITurnaround Time Requested: 24 Hour 48 Hour 5-Day Standard ~ Relinquished By: ~¢._ - Date:~c'~7'~i I Relinquished By: Date: Received ' ' ~'~ Date: ~_~C)t Received By: Date: i k. ':'"';" ':'" ) CHAIN OF CUSTODY / LABORATORY ANALYSIS REQUEST FORM 382 MARTIN AVENUE · TEL: 408.327.5700 FAX: 408.327.5707 BATE: ......... PAGE .... OF .... I, RouIL~ R~e~ SHIPPED VIA I j-'-j FED X J--J UPS r'-J OTHER AIR BILL # ~~~' CHAIN OF CUSTODY / LABORATORY ANALYSIS REQUEST FORM "~ ~ V ENVIRONMENTAL I ENGINEERING CONSULTANTS & 382 MARTIN AVENUE · ' ~ ~ V V TEl_: 488.327.5700 FAX: 488.327.5707 [:~TE: ......... P.~GE .... O¢ .... P~O.~"'r~UE____/~/', ~,L~__(3_~ ..... ANALYSIS REQUESTED ............. REQUIRF_.MENT8 R,EQUIRI~N"I~ .................. § day DUP. MS, M, SD. o~ar (spa~y). b. ~ -- Prodda pHONE __ P~.lmi~uy Raau~a ~111. DataVaid~ · :':~ ~!~-;~.. ID :[;~i~i[~::[~i~:: u!~.:~61[~'~ ~: :: :: !.:: ~Ji~L-!:/::~i~+::...L ::~%-:+~.:!~i!!~? · ::. ~. ::.. ! ::.:......~:.~:;. :~.:~..: ~.:.!:¢' SHIPPED VIA [] FED X [~ UPS E~] OTHER AIR BILL # Halcyon Laboratories Chain of Custody Form Client Name: E2C, Inc 661.831.6906 fax 661.831.6234 Analysis Requested Sample Maidx Project Name: /,~//. /L'-A6/--- ~ ~ 8 r--] Aqueous client Address: 5640 District Blvd., Suite 102. Bakersfield, CA 93313 ~ ~ 03 "' '" [~ Soil Project Manager: ~,'1/ L , ~o.~ ~ ~/~ ~ ~ ~ . . ~ ~ ~ ~ ~ ~ Acidified Sampler Name: ~6~' Sample Date Sample Time Sample Description and Container Type Comments ,, ~/~ ~-~-~ " ,~z7 AS-'~- bo " ._ Turnaround Time Requested:' 24 Hour 48 Hour 5-Day ~ Standard __ J Received By: Date: Received By: Date: Halcyon Laboratories Chain of Custody Form Client Name: E2C, Inc 661.831.6906 fax 661.831.6234 Analysis Requested Sample Matrix ~ ~ 8 r~ Aqueous Client Address: 5640 District Blvd., Suite 102. Bakersfield, CA 93313 Proje~Manager: ,cji ~o~ ~ ~ ~ ~ ~ ~ ~ ~ 8 Sampler Name: ¢ (( x Sample Da~e Sample Time Sample Description and Con~ainerType ~ ~ ~ ~ > ~ ~ ~ ~ ~ Commen~s ti Turnaround Time Requested: 24 Hour 48 Hour ~ 5-Day ~ Standard Relinquished By:~~~~~~ Date: ~2 ~p( Relinquished By: Date: Received By:' ~~~ , I Halcyon .Laboratories, nc. ! · · Laboratory Report Certification # 1920 I CLIENT FaC, Inc. Project Name: Mr. Fast #1801BK01 5640 District Blvd, Suite 102 I Bakersfield, CA 93313 Matrix: Soil Sampled by: Bill Cooper I TESTS: TPH Gas by EPA 8015M BTEX Analysis: 4/25/01 Date of Report: 4/30/01 I Units: mg/Kg Sample #: 2K1-744 2K1-746 2K1-748 2K1-757 2K1-759 2K1-761 I Date Sampled: 4/24/01 4/24/01 4/24/01 4/24/01 4/24/01 4/24/01 DL mg/Kg Sample Description: AS340 AS3-50 AS3-60 AS245 AS2-55 AS2-65 Benzene NA NA NA NA NA NA 0.005 Toluene NA NA NA NA NA NA 0.010 I Ethyl Benzene NA NA NA NA NA NA 0.010 m,p,o Xylenes NA NA NA NA NA NA 0.010 TPH Gasoline 9.9 <0.5 <0.5 395 50 46 0.5 I TPH Diesel NA NA NA NA NA NA 0.5 MTBE NA NA NA NA NA NA 0.05 Surrogate Recovery % 90 86 90 117 113 84 I Sample #: Date Sampled: DL mg/Kg Sample Description: I Benzene 0.005 Tolnene 0.010 Ethyl Benzene ' 0.010 I Xylenes 0.010 m,p,o TPlt Gasoline 0.5 TPH Diesel 0.5 I MTBE 0.05 Surrogate Recovery % Sample #: I Date Sampled: DL mg/Kg Sample Description: Benzene 0.005 I Toluene 0.010 Ethyl Benzene 0.010 m,p,o Xylenes 0.010 I TPH Gasoline 0.5 TPH Diesel 0.5 MTBE 0.05 I Surrogate Recovery % DL = Detection Limit~r/~~'"" ~d I ND - Non-Detect at given DL. NA - Result not available ~ Lab° I Halcyon Laboratories, :[nc. EPA 8260B Laboratory Report so. Sample Results in ug/L Certification Ct 1920 CLIENT: E2C Inc. 5640 District Blvd Suite 102 Bakersfield, CA 93313. Project ID · Mr. Fast #1801BKO1 4[24]0i-4[27[01 Report Date: 5/22/01 'Sample ID: AS1-45 Analyte Result Method RL Units ,50x¥~jenates t-Butanol (TBA) Tert-Butyl Alcohol ND 250.0 u°.~g Methyl Tert-Butyl Ether (MTBE) ND 50.0 u~g Diisopropyl Ether (DIPE) ND 50.0 ug/Kg Ethyl Tert-Butyl Ether (ETBE) ND 50.0 ug/Kg Tert-Amyl Methyl Ether (TAME) ND 50.0. BTEX Components Benzene ND 50.0 uod~Kg Toluene 5.782 50.0 ti-g/Kg Ethylbenzene 90.050 50.0 u~g m & p Xylenes 28.900 50.0 uo.~g o Xylenes 89,900 50.0 ug/Kg I Internal Standards Results % Recovery I Benzene, fluoro 55,1 110% Benzene-d5, chloro- 54.2 108% 1,4-Dichlorobenzene-d4 50.6 101% I Surrogate Standards Methane, dibromofluoro- 48.0 9.6% I 1,2-Dichlo roethane-d4 51.6 103% Toluene-d8 53.2 106% p-Bromofluorobenzene (BFB) 52.8 106% ! I Halcyon Laboratories, Inc.. EPA 8260B Laboratory Report Soil Sample Results in ug/L I Certification Ct 1920 i CLIENT: E2C Inc. · 5640 District Blvd Suite 102 Bakersfield, CA 93313 I Project ID ' Mr. Fast #1801BK01 4/24/01-4/27/01 I Report Date · 5/22/01 Sample ID · AS 1-55 i Analyte Result Method RL Units 5 Oxygenates I t-Butanol (TBA) Tert-Butyl Alcohol ND 250.0 ug/Kg Methyl Tert-Butyl Ether (MTBE) ND 50.0 ug/Kg Diisopropyl Ether (DIPE) ND 50.0 u°d%g I Ethyl Tert-Butyl Ether (ETBE) 50.0 tlo~g Tert-Amyl Methyl Ether (TAME) ND 50.0 uou'Kg I BTEX Components Benzene ND 50.0 ugdKg I Toluene 20 50.0 ug/Kg Ethylbenzene 529 50.0 uod'Kg m & p Xylenes 1.278 50.0 ug/Kg I o Xylenes 738 50.0 ug/Kg Internal Standards Results % Recovery Benzene, fluoro 44.8 90% Benzene-d5, chloro- 47.1 94% 1,4-Dichlorobenzene-d4 45.5 91% Surrogate Standards Methane, dibromofluoro- 52.6 105% 1,2-Dichloroetha ne-d4 54.9 110% Toluene-d8 49.3 99% p-Bromofluorobenzene (BFB) 48.5 97% Halcyon Laboratories, ]:nc. " EPA 8260B Laboratory Report Soil Sample Results in ug/L Certification # 1920 CLIENT: E2C Inc. 5640 District Blvd Suite 102 Bakersfield, CA 93313 Project ID ' Mr" Fast #:1.801BK01 4/24/01-4/27/01 Report Date ' 5/22/01 Sample ID · AS1-65 Analyte Result Method RL Units 5 Oxygenates t-Butanol (TBA) Tert-Butyl Alcohol ND 250.0 ug/Kg Methyl Tert-Butyl Ether (MTBE) ND 50.0 u..~Kg Diisopropyl Ether (DIPE) ND 50.0 u°,~rKg Ethyl Tert-Butyl Ether (ETBE) ND 50.0 u~g Tert-Amyl Methyl Ether (TAME) ND 50.0 ug/Kg BTEX Components Benzene ND 50.0 ug/Kg Toluene ND 50.0 ug/Kg Ethylbenzene <50 50.0 m & p Xylenes 114 50.0 ug/Kg o Xylenes 70 50.0 ug/Kg I Internal Standards Results % Recovery I Benzene, fluoro 47.2 94% Benzene-d5, chloro- 44.4 89% 1,4-Dichlorobenzene-d4 42.9 86% I Surrogate Standards Methane, dibromofluoro- 45.9 92% I 1,2-Dichloroethane-d4 47.0 94% Toluene-d8 50.4 101% p-Bromofluorobenzene (BFB) 47.8 96% ! Halcyon Laboratories, :[nc., ~' EPA 8260B Laboratory Report son Sample Results in ug/L Certification # 1920 CLIENT: E2C Inc. 5640 District Blvd Suite 102 Bakersfield, CA 93313 Project ID · Mr, Fast #1801BK01 4]24]01-4[27]01 Report Date · 5/22/01 Sample ID: AS2-45 Analyte Result IVlethod RL Units 5 Oxygenates t-Butanol (TBA) Tert-Butyl Alcohol ND 250.0 u,,,L4/Kg Methyl Tert-Butyl Ether (MTBE) ND 50.0 ug/Kg Diisopropyl Ether (DIPE) ND 50.0 ug/Kg Ethyl Tert-Butyl (ETBE) u ~,~ g Ether 50.0 Tert-Amyl Methyl Ether (TAME) ND 50.0 ugP~g BTEX Components Benzene ND 50.0 u~g Toluene ND 50.0 ug/Kg Ethylbenzene <50 50.0 u o~,C.g m & p Xylenes 73 50.0 ug/Kg o Xylenes <50 50.0 ug/Kg I Internal Standards Results % Recovery I Benzene, fluoro 45.1 90% Benzene-d5, chloro- 49.9 100% 1,4-Dichlorobe nzene-d4 51.3 103% I Surrogate Standards Methane, dibromofluoro- 42.0 84% I 1,2-Dichloroethane-d4 44.2 88% Toluene-d8 51.9 104% p-Bromofluorobenzene (BFB) 53.9 108% ,! Halcyon Laboratories, Inc. EPA 8260B Laboratory Report so~ Sample Results in ug/L Certification Ct 1920 CLIENT: EzC Inc. 5640 District Blvd Suite 102 Bakersfield, CA 93313 Project 1D · Mr. Fast #1801BK01 4/24/01-4/27/01 Report Date ' 5/22/01 Sample 1D ' AS2-55 ' Analyte Result Method RL Units 5 Oxygenates t-Butanol (TBA) TeN-Butyl Alcohol ND 250.0 ug~tKg Methyl Tert-Butyl Ether (MTBE) ND 50.0 ug/Kg Diisopropyl Ether (DIPE) ND 50.0 ug/Kg Ethyl Tert-Butyl (ETBE) ug/Kg Ether 50.0 Tert-Amyl Methyl Ether (TAME) ND 50.0 ug/Kg BTEX 'Components Benzene ND 50.0 ug/Kg Toluene ND 50.0 ug/Kg Ethylbenzene ND 50.0 ug/Kg m & p Xylenes ND 50.0 ug/Kg o Xylenes ND 50.0 ug/Kg I lnternal Standards' Results % Recovery I Benzene, fluoro 50.7 101% Benzene-d5, chloro- 53.8 10~1% 1,4-Dichlorobenzene-d4 49.8 100% I Surrogate Standards. Methane, dibromofluoro- 46.7 93% I 1,2-Dichloroethane-d4 49.3 99% Toluene-d8 55.5 111% p-Bromofluorobenzene (BFB) 54.7 109% ! Halcyon Laboratories,. Inc.. EPA 8260B Laboratory Report Soil Sample Results in ug/L Certification Ct 1920 CLIENT:. E2C Inc. 5640 District Bird Suite 102 Bakersfield, CA 93313 Project ID: Mr, Fast #1801BK01 4[24]01-4[27]0J. Report Date: 5/22/01 Sample ID: AS2-65 Analgte Result Hethod RL Units 5 Oxygenates t-Butanol (TBA) Ted-Butyl Alcohol ND 250.0 ug/Kg Methyl Ted-Butyl Ether (MTBE) ND 50.0 ug/Kg Diisopropyl Ether (DIPE) ND 50.0 u°~Kg Ethyl Ted-Butyl Ether (ETBE) ND 50.0 u°dKg Tert-Amyl Methyl Ether (TAME) ND 50.0 ug/Kg BTEX Components Benzene ND 50.0 ug/Kg Toluene ND 50.0 u~fKg Ethylbenzene <50 50.0 u~dKg m & p Xylenes 101 50.0 ug/Kg o Xylenes 62 50.0 uod%g I Internal Standards Results % Recovery I Benzene; fluoro 52.4 105% Benzene-dS, chloro- 53.8 108% 1,4-Dichlorobe nzene-d4 51.1 102% I Surrogate Standards Methane, dibromofluoro- 52.8 106% I 1,2-Dichloroethane-d4 53.8 108%. Toluene-d8 54.7 109% p-Bromofluorobenzene (BFB) 56.0 112% ! Halcyon Laboratories, Inc., EPA 8260B Laboratory Report sou Sample Results in ug/Kg Certification # 1920 CLIENT: EzC Inc. 5640 District Blvd Suite 102 Bakersfield, CA 93313 Project ID ' Mr. Fast #1801BKO1 4/24/01-4/27/01 Report Date · 5/22/01 Sample ID: AS3-40 Analyte Result Method RL Units 5 Oxygenates t-Butanol (TBA) Tert-Butyl Alcohol ND 25.0 Methyl Tert-Butyl Ether (MTBE) ND 5.0 u~'Kg Diisopropyl Ether (DIPE) ND 5.0 ug/Kg Ethyl Tert-Butyl Ether (ETBE) ND 5.0 ug/Kg Tert-Amyl Methyl Ether (TAME) ND 5.0 ugfKg BTEX Components · Benzene ND 5.0 uo.~rKg Toluene ND 5.0 ug/Kg Ethylbenzene ND 5.0 ug/Kg m & p Xylenes ND 5.0 ug/Kg o Xylenes ND 5.0 u ~'~g I Internal Standards Results % Recovery I Benzene, fluoro 47.8 96% Benzene-dS, chloro- 51.2 102% 1,4-Dichlorobenzene-d4 52.8 106% I Surrogate' Standards Methane, dibromofluoro- 51.8 104% I 1,2-Dichloroethan e-d4. 41.7 83% Toluene-d8 43.5 87% p-Bromofluorobenzene (BFB) 52.3 105% I Halcyon Laboratories, Inc., EPA 8260B Laboratory Report Soil Sample Results in ug/Kg Certification # 1920 CLIENT: E2C Inc. 5640 District Blvd Suite 102 Bakersfield, CA 93313 Project ID: Mr. Fast #:l. 80:tBKO! 4124/01-4/27/01 Report Date: 5/22/01 Sample ID: AS3-50 Analyte Result Method RL Units 5 Oxygenates t-Butanol (TBA) Ted-Butyl Alcohol ND 25.0 ug/Kg Methyl Ted-Butyl Ether (MTBE) ND 5.0 ug/Kg Diisopropyl Ether (DIPE) ND 5.0 ug/Kg Ether ND 5.0 ug/Kg Ethyl Ted-Butyl (ETBE) Ted-Amyl Methyl Ether (TAME) ND 5.0 ug/Kg BTEX Components Benzene ND 5.0 u°~g Toluene ND 5.0 u°~g Ethylbenzene ND 5.0 ug/Kg m & p Xylenes ND 5.0 ug/Kg o Xylenes ND 5.0 ug/Kg I [nternal Standards Results % Recovery I Benzene, fluoro 46.1 92% Benzene-d5, chloro- 52.8 106% 1,4-Dichlorobenzene-d4 53.7 107% I Surrogate Standards Methane, dibromofluoro- 49.4. 99% I 1,2-Dichloroethane-d4 50.3 101% Toluene-d8 44.0 88% p-Bromofluorobenzene (BFB) 51.5 103% ! Halcyon Laboratories, Inc., ~ EPA 8260B Laboratory Report Soil Sample Results in ug/Kg Certification Ct 1920 CLIENT: E2C Inc. 5640 District Blvd Suite 102 Bakersfield, CA 93313 .Project ID · Mr. Fast #1801BKO1 4/24/01-4/27/01 Report Date · 5/22/01 Sample ID · AS3-60 Analyte Result Method RL Units 5 Oxygenates t-Butanol (TBA) Ted-Butyl Alcohol ND 25.0 ug/Kg Methyl Tert-Butyl Ether (MTBE) ND 5.0 u~g · Diisopropyl Ether (DIPE) ND 5.0 u~g Ethyl Ted-Butyl Ether (ETBE) ND 5.0 ug/Kg Tert-Amyl Methyl Ether (TAME) ND 5.0 ug/Kg BTEX Components Benzene ND 5.0 ug/Kg Toluene ND 5.0 u~g Ethylbenzene ND 5.0 ug/Kg m & p Xylenes ND 5.0 tl°~/Kg o Xylenes ND 5.0 u°~g I Internal Standards Results % Recovery I Benzene, fluoro ~9,i 98% Benzene-d5, chloro- 54.7 109% 1,4-Dichlorobenzene~d4 54.5 109% I Surrogate Standards Methane, dibromofluoro- 50.6 101% I 1,2-Dichloroethane-d4 50.6 101% Toluene-d8 48.0 96% p-Bromofluorobenzene (BFB) 53.0 106% Halcyon Laboratories, Inc.~ EPA 8260B Laboratory Report s.o~ Sample Results in ug/Kg Certification # 1920 CLIENT: EzC Inc. 5640 District Blvd Suite 102 Bakersfield, CA 93313 Project ID · Mr. Fast #180IBKO1 4]24]01-4[27[01 Report Date ' 5/22/01 Sample ID ' MWllRZ45 Analyte Result Method RL Units 5 Oxygenates t-Butanol (TBA) Ted-Butyl Alcohol ND 25.0 ug/Kg Methyl Ted-Butyl Ether (MTBE) ND 5.0 ug/Kg Diisopropyl Ether (DIPE) ND 5.0 ugF'K.g Ethyl Ted-Butyl Ether (ETBE) ND 5.0 Tert-Amyl Methyl Ether (TAME) ND 5.0 ug/Kg BTEX Components · Benzene ND 5.0 u,~%g Toluene ND 5.0 Ethylbenzene ND 5.0 uo~g m & p Xylenes N~D 5.0 u~g o Xylenes ND 5.0 ug/Kg Internal Standards Results % Recovery Benzene, fluoro 48.4 97% Benzene-dS, chloro- 52.8 106% 1,4-Dichlorobenzene-d4 52,3 105% Surrogate Standards Methane, dibromofluoro- 55.7 111% 1,2-Dichloroethane-d4 58.8 118% Toluene-d8 44.1 88% p-Bromofluorobenzene (BFB) 51.7 103% Halcyon Laboratories, Inc., EPA 8260B Laboratory Report so. Sample Results in ag/Kg Certification # 1920 CLIENT: EzC Inc. 5640 District Blvd Suite 102 Bakersfield, CA 93313 Project ID · Mr. Fast #1801BK01 4/24/01-4/27/01 Report Date ' 5/22/01 Sample ID: MWllR-55 Analyte Result Method RL Units 5 Oxygenates t-Butanol (TBA) Ted-Butyl Alcohol ND 25.0 uo~Kg Methyl Ted-Butyl Ether (MTBE) ND 5.0 ug/Kg Diisopropyl Ether (DIPE) ND 5.0 ug/Kg Ethyl Ted-Butyl Ether (ETBE) ND 5.0 ug/Kg Ted-Amyl Methyl Ether (TAME) ND 5.0 u°..°w%g BTEX Components Benzene ND 5.0 ug/Kg Toluene ND 5.0 ug/Kg Ethylbenzene ND 5.0 m & p Xylenes ND 5.0 u&'Kg o Xylenes ND 5.0 ug/Kg I Internal Standards Results % Recovery I Benzene, fluoro 47.5 95% Benzene-d5, chloror 54.9 110% 1,4-Dichlorobenzene-d4 52.6 105% I Surrogate Standards Methane, dibromofluoro- 59.1 118% I 1,2-Dichloroethane-d4 56.0 112% Toluene-d8 46.4 93% p-Bromofluorobenzene (BFB) 53.3 107% 1 I Halcyon Laboratories, Inc., EPA 8260B Laboratory Report so, Sample Results in ug/Kg Certification # 1920 CLIENT: EzC Inc. 5640 District Blvd Suite 102 Bakersfield, CA 93313 Project ID · Mr. Fast #180:1. BK01 4[24[01-4[27/0:1. Report Date: 5/22/01 Sample ID: MWIIR-60 Analyte Result Method RE Units 5 Oxygenates t-Butanol (TBA) Ted-Butyl Alcohol ND 25.0 ug/Kg Methyl Ted-Butyl Ether (MTBE) ND 5.0 ug/Kg Diisopropyl Ether (DIPE) ND 5.0 ug/Kg Ethyl Ted-Butyl Ether (ETBE) ND 5.0 ug/Kg Ted-Amyl Methyl Ether (TAME) ND 5.0 ug/Kg BTEX Components Benzene ND 5.0 ug/Kg Toluene ND 5.0 u°~g Ethylbenzene ND 5.0 ug/Kg : m & p Xylenes ND 5.0 ug/Kg o Xylenes ND 5.0 ug/Kg I lnternal Standards Results % Rec~overy I Benzene, fluoro 49.0 98% Benzene-d5, chloro- 52.4 105% 1,4-Dichlorobenzene-d4 52.2 104% I Surrogate Standards Methane, dibromofluoro- 55.9 112% I 1,2-Dichloroethane-d4 50.6 101% Toluene-d8 45.0 90% p-Bromofluorobenzene (BFB) 52.6 105% i Ii I Halcyon Laboratories, [nc. I EPA 8260B Laboratory RePort Soil Sample Results in ug/Kg I Certification # 1920 CLIENT: EzC Inc. I 5640 District Blvd Suite 102 Bakersfield, CA 93313 I Project ID · Mr. Fast #XS01BK01 .4/24/01-4/27]01 I Report Date · '5/22/01 Sample ID: MWllR-65 ! i Analyte Result Hethod RI. Units $ Oxygenates I t-Butanol (TBA) Tert-Butyl Alcohol ND 25.0 ug/Kg Methyl Tert~Butyl Ether (MTBE) ND 5.0 ug/Kg Diisopropyl Ether (DIPE) ND 5.0 ug/Kg I Ethyl Tert-Butyl Ether (ETBE) ND 5.0 u°wrKg Tert-Amyl Methyl Ether (TAME) ND 5.0 ttg/Kg I BTEX Components Benzene ND 5.0 ug/Kg I TOluene ND 5.0 ug/Kg Ethylbenzene ND 5.0 u°w'Kg m & p Xylenes ND 5.0 ug/Kg i o Xylenes ND 5.0 ug/Kg I [nternal Standards Results % Recovery I Benzene, fluoro 48.3 97% Benzene-dS, chloro- 53.3 107% 1,4-Dichlorobenzene-d4 51.6 103% I Surrogate Standards Methane, dibromofluoro- 58.9 118% I 1,2-Dichloroethane-d4 52,0 104% Toluene-d8 45.1 90% p-Bromofluorobenzene (BFB) 53.4 107% ! Halcyon Laboratories, Inc. EPA 8260B Labo'ratory Report Soil Sample Results in ug/L · Certification # 1920. CLIENT: E2C Inc. 5640 District Blvd Suite 102 Bakersfield, CA 93313 Project ID ' Mr. Fast #1801BKO1 4/24/01-4/27/01 Report Date: 5/22/01 Sample ID: MW-12-50 Analyte Result Method RL Units 5 Oxygenates t-Butanol (TBA) Ted-Butyl Alcohol ND 250.0 ug/Kg Methyl Ted-Butyl Ether (MTBE) ND 50.0 ug/Kg Diisopropyl Ether (DIPE) ND 50.0 ug/Kg Ethyl Ted-Butyl Ether (ETBE) ND 50.0 ugCKg Ted-Amyl Methyl Ether (TAME). ND 50.0 ug/Kg BTEX Components Benzene 6,678~ 50.0 ug/Kg Toluene 526,900 50.0 uodKg Ethylbenzene 14,250 50.0 u~/Kg m & p Xylenes 55,576 50.0 ug/Kg o Xylenes . 60,100 50.O ug/Kg I Internal Standards Results % Recovery I Benzene, fluoro 59.6 119% Benzene-d5, chloro- 55.4 111% 1,4-Dichlorobenzene-d4 44.6 89% I Surrogate Standards Methane, dibromofluoro- 52,8 106% I 1,2-Dichloroethane-d4 53.8 108% Toluene-d8 54.4 109% p-Bromofluorobenzene (BFB) 56.0 112% I Halcyon Laboratories, :Inc. EPA 8260B Laboratory Report soi~ sample Results in ug/L Certification # 1920 CLIENT: E~C Inc. 5640 District Bivd Suite 102 Bakersfield, CA 93313 Project ID · Mr. Fast #1801BK01 4/24/01-4/27/01 Report Date: 5/22/01 Sample ID: MW-12-55 Analyte Result Method RL Units 5 Oxygenates t-Butanol (TBA) Tert-Butyl Alcohol ND 250.0 u,,~/Kg Methyl Tert-Butyl Ether (MTBE) ND 50.0 tt°~g Diisopropyl Ether (DIPE) ND 50.0 ug/Kg Ethyl Tert-Butyl Ether (ETBE) ND 50.0 ugfld, g Tert-Amyl Methyl Ether (TAME) ND 50.0 ugh'Kg BTEX Components Benzene 190 50.0 ug/Kg Toluene 23.562 50.0 ug/Kg Ethylbenzene 9.944 50.0 ugJKg m & p Xylenes 19.414 50.0 u'~rKg o Xylenes 17.275 50.0 ug/Kg I Internal Standards Results % Recovery I Benzene,' fluoro 52.3 105% Benzene-dS, chloro- 46.9 ' 94% 1,4-Dichlorobenzene-d4 55.9 112% I Surrogate Standards Methane, dibromofluoro- 58.0 116% I 1,2-Dichloroethane-d4 '49.7 99% Toluene-d8 56.1 112% p-Bromofluorobenzene (BFB) 57.3 115% ! I HalcyOn Laboratories, Inc.: EPA 8260B Laboratory RePort so. sample Results in ug/L Certification Ct 1920 CLIENT: E2C Inc. 56240 District Blvd Suite 102 Bakersfield, CA 93313 Project ID · Mr. Fast #1801BKO! 4/24]01-4]27]01 Report Date · 5/22/01 Sample ID · MW-12-60 Analyte Result Method RL Units 5 Oxygenates t-Butanol (TBA) Tert-ButYl Alcohol ND 250.0 ug/Kg Methyl Tert-Butyl Ether (MTBE) ND 50.0 uCKg Diisopropyl Ether (DIPE) ND 50.0 u°d%g Ethyl Tert-Butyl Ether (ETBE) ND 50.0 u°d!4g Tert-Amyl Methyl Ether (TAME) ND 50.0 ug/Kg BTEX Components Benzene 795 50.0 ugJKg Toluene 14,937 50.0 u°~Kg Ethylbenzene 5.808 50.0 ug/Kg m & p Xylenes 12,372 50.0 u°d'Kg o Xylenes 11,276 50.0 u°~<.g I Internal Standards Results % RecOvery I Benzene, fluoro 45.4 91% Benzene-d5, chloro- 55.6 111% 1,4-Dichlorobenzene-d4 54.1 108% I Surrogate Standards Methane, dibromofluoro- 43.5 87% I 1,2-Dichloroethane-d4 47.8 96% Toluene-d8 47.6 95% p-Bromofluorobenzene (BFB) 52.9 106% Halcyon Laboratories, :[nc. EPA 8260B Laboratory RepOrt so. Sample Results in ug/Kg Certification Ct 1920 CLIENT: E2C Inc. 5640 District Blvd Suite 102 Bakersfield, CA 93313 Project ID: Mr. Fast #180::I. BK01 4/24/0J.-4/27/0l I Report Date: 5/22/01 Sample ID: MW-12-65 I i Analyte Result Method RL Units 5 Oxygenates I t-Butanol (TBA) Ted-Butyl Alcohol ND 25.0 Methyl Ted-Butyl Ether (MTBE) ND 5.0 u°=/Kg Diisopropyl Ether (DIPE) ND 5.0 ug/Kg I Ethyl Ted-Butyl Ether (ETBE) ND 5.0 ug/Kg · Tert-Amyl Methyl Ether (TAME) ND 5.0 ug/Kg I BTEX Components Benzene ND 5.0 ug/Kg I 5.0 Toluene ND ug/Kg Ethylbenzene ND 5.0 ug/Kg m & p Xylenes ND 5.0 ug/Kg I o Xylenes ND 5.0 uo~fKg I Internal Standards Results % Recovery I Benzene, fluoro 43.0 '86% Benzene-d5, chloro- 41.1 82% 1,4-Dichlorobenzene-d4 51.6 103% I Surrogate Standards Methane, dibromofluoro- 46.4 93% I 1,2-Dichloroethane-d4 48.1 96% Toluene-d8 48.0 96% p-Bromofluorobenzene (BFB) 46.8 94% I · Halcyon Laboratories, Inc. EPA 8260B Laboratory Report son Sample Results in ug/Kg Certification it 1920 CLIENT: E2C Inc, 5640 District Blvd Suite 102 Bakersfield, CA 93313 Project ID · Mr. Fast #J. 801BK01 4/24]01-4/27/0:1. Report Da~e · 5/22/01 Sample ID: MW13-50 Analyte Result Hethod RL Units 5 Oxygenates t-Butanol (TBA) Ted-Butyl Alcohol ND ug/Kg 25.0 Methyl Tert-Butyl Ether (MTBE) ND 5.0 ug/Kg Diisopropyl Ether (DIPE) ND 5.0 ugfiKg Ethyl Tert-Butyl Ether (ETBE) ND 5.0 ug/Kg Tert-Amyl Methyl Ether (TAME) ND 5.0 ' ug/Kg BTEX Components Benzene NT:) 5.0 u°~g Toluene ND 5.0 ug/Kg Ethylbenzene ND 5.0 u~g m & p Xylenes ND 5.0 u°d~Kg o Xylenes ND 5.0 tl~=/Kg Internal Standards Results % Recovery Benzene, fluoro 48,7 97% Benzene-d5, chloro- 52.8 106% 1,4-Dichlorobenzene-d4 49.4 99% Surrogate Standards Methane, dibromofluoro- 56.4 113% 1,2-Dichloroethane-d4 46.9 94% Toluene-d8 44.8 90% p-Bromofluorobenzene (BFB) 51.1 102% Halcyon Laboratories, Inc., ' EPA 8260B Laboratory Report soi~ Sample Results in ug/Kg Certification Ct 1920 CLIENT: E2C Inc. 5640 District Blvd Suite 102 Bakersfield, CA 93313 Project ID ' Mr. Fast #1801BKO1 4[24[01-4[27[01 Report Date: 5/22/01 Sample ID: MW13-55 Analyte Result Method RL Units 5 Oxygenates t-Butanol (TBA) Tert-Butyl Alcohol ND 25.0 uo~rmg Methyl Tert-Butyl Ether (MTBE) ND 5.0 u°d%g Diisopropyl Ether (DIPE) ND 5.0 ug/Kg Ethyl Tert-Butyl Ether (ETBE) 5.0 ugfKg Tert-Amyl Methyl Ether (TAME) ND 5.0 u~g BTEX Components Benzene ND 5.0 ug/Kg Toluene ND 5.0 u~g Ethylbenzene ND 5.0 ug/Kg m & p Xylenes ND 5.0 ug/Kg o Xylenes ND 5.0 tt°~y/Kg I Internal Standards Results % Recovery I Benzene, fluoro 49.9 100% Benzene-d5, chloro- 54.6 109% 1,4-Dichlorobenzene-d4 5l .7 103% I SurrOgate standards Methane, dibromofluoro-. 56.3 113% I 1,2-Dichloroethane-d4 47.9 96% Toluene-d8 48.0 96% p-Bromofluorobenzene (BFB) 52.6 105% I I · I Halcyon Laboratories, Inc.~ I EPA 8260B Laboratory Report so. Sample Results in ag/Kg I Certification Ct 1920 cLIENT: EzC Inc. I 5640 District Blvd Suite 102 Bakersfield, CA 93313 I Project ID · Mr. Fast #1801BK01 4/24/01-4/27]01 I Report Date ' 5/22/01 Sample ID · MW13-60 ! i Analgte Result IVlethod RI_ Units $ OXygenates I t-Butanol (TBA) Tert-Butyl Alcohol ND 25.0 u,,~Kg Methyl Ted-Butyl Ether (MTBE) ND 5.0 Diisopropyl Ether (DIPE) ND 5.0 ug/Kg I Ether (ETBE) ND 5.0 u°g/Kg Ethyl Ted-Butyl Tert-Amyl Methyl Ether (TAME) ND 5.0 ugF~g I BTEX Components Benzene ND 5.0 ug/Kg I Toluene ND 5.0 u~Kg Ethylbenzene ND 5.0 ug/Kg m & p Xylenes ND 5.0 ug/Kg I o Xylenes ND 5.0 ug/Kg I Internal Standards Results % Recovery I Benzene, fluoro 48.4 970/0 Benzene-d5, chloro- 54.6 109% 1,4-Dichlorobenzene-d4 51.5 103% I Surrogate Standards Methane, dibromofluoro- 57.3 115% I 1,2-Dichtoroethane-d4 49.5 99% Toluene-d8 48.7 97% p-Bromofluorobenzene (BFB) 53.2 106% I Halcyon Laboratories, Inc. EPA'8260B Laboratory Report Soil Sample Results in ug/Kg Certification Ct. 1920 CLIENT: EzC Inc. 5640 District Blvd Suite 102 Bakersfield, CA 93313 Project ID · Mr. Fast #1801BK01 4]24/01-4/27/01 Report Date: 5/22/01 Sample ID: MW13-65 Analyte Result Method RI. Units 5 Oxygenates t-Butanol (TBA) Ted-Butyl Alcohol ND 25.0 u°~g Methyl Ted-Butyl Ether (MTBE) ND 5.0 u°.~g Diisopropyl Ether (DIPE) ND 5.0 u°~/Kg Ethyl Ted-Butyl Ether (ETBE) ND 5.0 ug/Kg Ted-Amyl Methyl Ether (TAME) ND 5.o ug~g BTEX Components Benzene ND 5.0 uo~Cg Toluene ND 5.0 u°~/Kg Ethylbenzene ND 5.0 m & p Xylenes ND 5.0 tt~q,~g o Xylenes ND 5.0 u°~rKg I Internal Standards Results % Recovery I Benzene, fluoro 49.3 99% Benzene-d5, chloro- 54.1 1.08% 1,4-Dichlorobenzene-d4 52.1 104% I Surrogate Standards Methane, dibromofluoro- 55.2 110% I 1,2-Dichloroethane-d4 53.3 107%: Toluene-d8 45.9 92% p-Bromofluor0benzene (BFB) 52.4 105% Halcyon Laboratories, Inc.. EPA 8260B Laboratory Report Soil Sample Results in ug/Kg Certification # 1920 CLIENT: E2C Inc. 5640 District Blvd Suite 102 Bakersfield, CA 93313 Project ID- Mr, Fast #1801BK01 4/24/01-4/27/01 Report Date: 5/22/01 Sample ID: MW14-65 Analyte Result Method RL Units 5 Oxygenates t-Butanol (TBA) Ted-Butyl Alcohol ND 25.0 u~/Kg Methyl Ted-Butyl Ether (MTBE) ND 5.0 ug/Kg Diisopropyl Ether (DIPE) ND 5.0 u~Kg Ethyl Ted-Butyl Ether (ETBE) ND 5.0 u~/Kg Ted-Amyl Methyl Ether (TAME) ND 5.0 u~Kg BTEX Components Benzene 28.1 5.0 ug/Kg Toluene 79.8 5.0 ug/Kg Ethylbenzene <5.0 5.0 ug/Kg m & p Xylenes 5.2 5.0 ug/Kg o Xylenes 11.4 5.0 ug/Kg I [nternal Standards Results % Recovery . I Benzene, fluoro 57.5 115% Benzene-d5, chloro- 58.3 117% 1,4-Dichlorobenzene-d4 53.3 107% I Surrogate Standards Methane, dibromofluoro- 41.7 83% I 1,2-Dichloroethane-d4 44.6 89% Toluene-d8 52.2 104% p-Bromofluorobenzene (BFB) 53.3 107% Halcyon Laboratories, Inc. EPA 8260B Laboratory Report sou Sample Results in ug/Kg Certification Ct 1920 CLIENT: E2C Inc. 5640 District Blvd Suite 102 ~ Bakersfield, CA 93313 Project ID' Mr. Fast,#1801Bg01 4/24/01-4/27/01 Report Date: 5/22/01 Sample ID: MW14-70 Analyte Result Method RL Units 5 Oxygenates t-Butanol (TBA) Tert-Butyl Alcohol ND 25.0 ug/Kg Methyl Tert-Butyl Ether (MTBE) ND 5.0 ug/Kg Diisopropyl Ether (DIPE) ND. 5.0 ug/Kg (ETBE) ND 5.0 u°d%g Ethyl Ted-Butyl Ether Tert-Amyl Methyl Ether (TAME) ND 5.0 u~=/Kg BTEX Components Benzene ND 5.0 ug/Kg Toluene ND 5.0 ug/Kg Ethylbenzene ND 5.0 ug/Kg m & p Xylenes ND 5.0 ug/Kg o Xylenes ND 5.0 ug/Kg Internal Standards Results % Recovery Benzene, fluoro 52.0 104% Benzene-dS, chloro- 53.8 108% 1,4-Dichlorobenzene-d4 53.2 106% Surrogate Standards Methane, dibromofluoro- 43.8 88% 1,2-Dichloroethane-d4 44.9 90% Toluene-d8 48'.7 97% p-Bromofluorobenzene (BFB) 53.8 108% I Halcyon LabOratories, :Inc.. ~' ~ EPA 8260B Laboratory Report~ so, Sample Results in ag/Kg I' ' Certification # 1920 CLIENT: E2C Inc. I 5640'District Blvd Saite 102 Bakersfield, CA 93313 · I Project ID' ',Mr. FaSt #1801BK01 4/24/01-4/27/01 I Report Date: 5/22/01 Sample ID: MW14-75 I i Analyte Result Method RL Units 5 OxYgenates I t-Butanol (TBA) TeA-Butyl Alcohol ND 25.0 ug/Kg Methyl Tert-Butyl Ether (MTBE) ND 5.0 ag/Kg Diisopropyl Ether (DIPE) ND 5.0 ag/Kg i I Ethyl Tert-Butyl Ether (ETBE) ND 5.0 u~rKg Tert-Amyl Methyl Ether (TAME) ND 5.0 ag/Kg I BTEx Components Benzene ND 5.0 uod~g I Toluene ND 5.0 ag/Kg Ethylbenzene ND 5.0 tic/Kg m & p Xylenes ND 5.0 ug/Kg I o Xylenes ND 5.0 ag/Kg I Internal Standards Results % Recovery I Benzene, fluoro 47.4 95% Benzene-d5, chloro- 50.7 101% 1,4-Dichlorobenzene-d4 55.2 110% I Surrogate Standards Methane, dibromofluoro- 56.1 112% I 1,2-Dichloroethane-d4 48.7 97% Toluene-d8 42.6 85% p-Brom0fluorobenzene (BFB) '52.2 104% ! Halcyon Laboratories, Inc,. EPA 8260B Laboratory Report so. Sample Results'in ug/Kg Certification # 1920 ' CLIENT: E~C Inc. 5640 District Blvd Suite 102 Bakersfield, CA 93313 Project [D. Mr. Fast #1801BK01 4/24/01-4]27/01 Report Date · 5/22/01 Sample ID: MW14-78 Analyte Result Method RL Units 5 Oxygenates t-Butanol (TBA) Tert-Butyl Alcohol ND 25.0 ug/Kg Methyl Tert-Butyl Ether (MTBE) ND 5:0 ug/Kg Diisopropyl Ether (DIPE) ND 5.0 ug/Kg Ether ND 5.0 ug/Kg Ethyl Tert-Butyl (ETBE) Tert-Amyl Methyl Ether (TAME) ND 5.0 ug/Kg BTEX Components Benzene ND 5.0 ug/Kg Toluene ND' 5.0 ug/Kg Ethylbenzene ND 5.0 ug/Kg m & p Xylenes ND 5.0 ug/Kg o Xylenes ND 5.0 ug/Kg I Internal Standards Results % Recovery I Benzene, fluoro 57.5 115% Benzene-d5, chloro- 55.2 110% 1,4-Dichlorobenzene-d4 58.4 117% I Surrogate standards Methane, dibromofluoro- 45.4 91% I 1,2-Dichloroethane-d4 .46.7 93% Toluene-d8 47.9 96% p-Bromofluorobenzene (BFB) 50.2 100% ! i Halcyon Laboratories, :Inc. ~' EPA 8260B Laboratory RePort Soil Sample Results in ug/Kg Certification # 1920 CLIENT: E~C Inc. 5640 District Blvd Suite 102 Bakersfield, CA 93313 Project ID' Mr, Fast #1801BK01 4/24/01-4/27/01 Report Date: 5/22/01 Sample ID: VE3-15 Analyte Result Method RL Units 5 Oxygenates t-Butanol (TBA) Tert-Butyl Alcohol ND 25.0 ug/~g Methyl Tert-Butyl Ether (MTBE) ND 5.0 ug/Kg Diisopropyl Ether (DIPE) ND 5.0 ug/Kg Ethyl Tert-Butyl Ether (ETBE) ND 5.0 ug/Kg Tert-Amyl Methyl Ether (TAME) ND 5.0 ug/Kg BTEx Components Benzene ND 5.0 u~Kg Toluene ND 5.0 u~/Kg Ethylbenzene ND 5.0 ug/Kg m & .p Xylenes ND 5.0 u~Kg o Xylenes ND 5.0 ugrKg I Internal Standards Results % Recovery I Benzene, fluoro 47.3 95% Benzene-d5, chloro- 51.1 102% 1,4-Dichlorobenzene-d4 52.5 105% I Surrogate Standards Methane, dibromofluoro- 47.6 95% I 1,2-Dichloroet .bane-d4 40,9 82% Toluene-d8 43.9 88% p-Bromofluorobenzene (BFB) 50,8 102% I 1 I Halcyon Laboratories, ;[nc. ~ EPA 8260B Laboratory Report soi~ Sample Results in ug/Kg ICertification # 1920 CLIENT: EzC Inc. I 5640 District Blvd Suite 102 Bakersfield, CA 93313 I Project ID · Mr. Fast #1801BK01 4/24/01-4/27]01 I Report Date: 5/22/01 Sample ID: VE3-25 i Analyte Result Method RL Units 5 Oxygenates I. t-Butanol (TBA) Ted-Butyl Alcohol ND 23.0 ug/Kg Methyl Ted-Butyl Ether (MTBE) ND 5.0 Diisopropyl Ether (DIPE) ND 5.0 ug/~g I Ethyl Ted-Butyl Ether (ETBE) ND 5.0 u~Kg Tert-Amyl Methyl Ether (TAME) ND 5.0 ug;Kg I BTEX Components Benzene ND 5.0 u&q4.g I Toluene ND 5.0 ug/Kg Ethylbenzene ND 5.0 ug/Kg m & p Xylenes ND 5.0 ug/Kg I o Xylenes ND 5.0 ug/Kg I Internal Standards Results % Recovery I Benzene, fluoro 46.6 93% Benzene-d5, chloro- 52.1 104% 1,4-Dichlorobenzene-d4 49.0 98% I Surrogate Standards Methane, dibromofluoro- 50.1 100% I 1,2-Dichloroethane-d4 44.1 88% Toluene-d8 44.2 88% p-Bromofluorobenzene (BFB) 50.3 101% I 1 Halcyon Laboratories, :Inc. ' EPA 8260B Laboratory Report soi~ Sample Results in ug/Kg Certification Ct 1920 CLIENT: EzC Inc. 5640 District Blvd. Suite 102 Bakersfield, CA 93313 Project ID · Mr. Fast #1801BK01 4/24/01-4/27/01 Report Date · 5/22/01 Sample ID: ¥E3-37 Analyte Result Method RL Units 5 Oxygenates Alcohol ND 25.0 ug/Kg t-Butanol (TBA) Ted-Butyl Methyl Ted-Butyl Ether (MTBE) ND 5.0 uod%g Diisopropyl Ether (DIPE) ND · 5.0 ug/Kg Ethyl Ted-Butyl Ether (ETBE) ND 5.0 ug/Kg Ted-Amyl Methyl Ether (TAME) ND 5.0 ug/Kg BTEX Components Benzene ND 5.0 uo~Kg Toluene ND 5.0 ug/Kg Ethylbenzene ND 5.0 ug/Kg m & p Xylenes ND 5.0 u~d'Kg o Xylenes ND 5.0 ug/Kg I Internal Standards Results % Recovery Benzene, fluoro 48.2 96% I Benzene-d5, chloro- 51.8 104% 1,4-Dichlorobenzene-d4 48.7 97% I Surrogate Standards Methane, dibromofluoro- 52.6 105% I 1,2-Dichloroethane-d4 46.4 93% Toluene-d8 46.0 92% p-Bromofluorobenzene (BFB) .51.9 104% i I pr(2_iect Number 1801BK04 ' A uo_ust' 15. 2001 I i I I I I ~ APPENDIX I I Second Quarter 2001 Well Purging Data Sheets I. I I I I I I I E2C Remediation, LLC Appendix I I E2C~ Inc WATER QUALITY SAMPLING RECORD Groundwater Scientists:Environmental Consultants AND WELL DEVELOPMENT DATA 5640 Distdct Bird Suite 102 Bakersfield, CA 93313 SAMPLE ID OR WELL NO.: /~ UJ ' t DEPTH TO WATER: q 2,. / '~ ft PROJECT NO.: TOTAL DEPTH OF WELL: ,,.~/'. ~,'o ft PROJECT NAME: ~/~r F..% WELL DIAMETER: Z" ' ,DATE: ~ lq/ O~ .' CASING VOLUME: -/"~'~ gallons · , ..~ PURGE CHARACTERISTICS TEMP pH SEC SAMPLE REMARKS TIME INTAKE RATE CUM. VOL WELL VOL (F°) (UNITS) (,~mhos/ CONTROL DEPTH (GPM) (GAL) PUMPED cra) NO. (COLOR, TURBIDITY, ETC.) 'pH CALIBRATION / STANDARDIZED i BUFFER SOLUTION pH 4.01 pH 7.0 pH 10.0 Well Capacity: 2" - 0.1632 gallon/linear foot 'TEMP F° 4' - 0.6528 gallon/linear loot INSTRUMENT READING 6" - 1.4688 gallon/linear foot SPECIFIC ELECTRILCAL CONDUCTANCE - CALIBRATION / STANDARDIZATION KCL SOLUTION pMHOS / OM @ 25 C" 74 718 1413 6868 58640 TEMP F° INSTRUMENT READING .,.. .I ~,'~ -- I SAMPLEDAT: t~.,~, I~' FT. FINAL DEPTH TO WATER: ~ ~. ,,,r~' FT. 3 CASING VOLUMES= GALS. NOTES: ! E2C, Inc WATER QUALITY SAMPLING RECORD Groundwater Scientists: Er~vironmental Consultants AND WELL DEVELOPMENT DATA 5640 District Blvd Suite 102 Bakersfield, CA 93313 .,. ................... . ......... SAMPLEIDORWELLNO.: ~,~L)--~--. DEPTHTOWATER: ql, ~r~- ~t PROJECT NO.: TOTAL DEPTH OF WELL: ~ · ~ ~ ft PROJECT NAME: ~ C ~~ WELL DIAMETER: ;DATE: 6 ~ i' ' SAMPLED BY: C0°9¢ METHOD OF PURGING: PURGE CHARACTERISTICS TEMP pH SEC SAMPLE REMARKS TIME INTAKE RATE CUM. VOL WELL VOL (Fo) (UNITS) (pmhos/ CONTROL DEPTH (GPM) (GAL) PUMPED cra) NO. (COLOR, TURBIDLY, ETC.) II IZ ~1~.o o 70.~ ~ ?~ o,~ ' ' I~'~ I ~.~[.~ o.~ " " il :~ Z ~S,° ~.~0"~ " '" ll'l~ ~ ¢~.~ ¢'~°'~7 " " I~'i~ ~' 6 b~'~ ;.¢= °"~ " " !1;'1~ q~'~ 7 ~.~~.~O. '~ " " pH CALIBRATION / STANDARDIZED BUFFER SOLUTION pH 4.01 pH 7.0 pH 10.0 Well Capacity: 2" - 0.1632 gallo~inear foot 4" - 0.6528 galto~inear foot TEMP F' -- ..... 6" - 1.4688 galb~inear foot INSTRUMENT READING KCL SOLUTION pMHOS / CM G 25 C* 74 718 1413 6868 58640 TEMP F. ______ INSTRUMENT READING ~ ' CASING VOLUMES= SAMPLED AT: ~, ~. FINAL DEPTH TO WATER: · ~. 3 , GALS. NOTES~ E2C, Inc I ' WATER QUALITY SAMPLING RECORD Groundwater Scientists: Environmental Consultants I AND WELL DEVELOPMENT DATA 5640 D str ct Blvd Suite 102 Bakersfield, CA 93313 ._L :LE ID OR WELL NO.: '/¢~v~./- ~ DEPTH TO WATER: /"CZ' ~'"~- ft 'PROJECT NO.: TOTAL DEPTH OF WELL: ~'¢- ~'~' ft [OAT~: ~1~[0, CAS,NCVO~UMS: /.e~ gallons '" ,/~ '%URGE cHaRAcTERISTICS TEMP 'pH SEC ~AMPLE REMARKS ~ CONTROL TIME INTAKE RATE CUM. VOL WELL VOL (F°) (UNITS) (pmhos/ ~ NO. (COLOR. TURBIDLY. ETC.) DEPTH (GPM) (GAL) PUMPED cra) /~' W,.o I.oo ?~.7 ~.~z o.~ ~,~a~, ~.~ .-, /~ :~, z ~-~ ~.~'/°-''* / I~:~o ~ 71'~ E"~ °'~ " /(:~l ~ 1.1.~ ~'~x o'~;[ " 'c~-d ~-~ a~o~ · 4" - 0.6528 gallon/linear foot 1.4688 gallon~inear foot MPF' 6'-. ~ INSTRUMENT READING ~ECIFIC ELEOTRILOAL CONDUCTANCE - CALIBRATION / STANDARDIZATION ;LSOLUTIONpMHOS/CM~250° 74 718 1413 ~ 58640· 'EMP P INSTRUMENT READING SAMPLEDAT:'~. ~ ~. FINAL DEPTH TO WATER: ~'~ ~. 3CASINGVOLUMES~' ~_GALS. E2C, Inc WATER QUALITY SAMPLING RECORD Groundwater Scientists: Environmental Consultants AND WELL 'DEVELOPMENT DATA 5640 District Blvd Suite 102 Bakersfield, CA 93313 SAMPLE ID OR WELL NO.: //~ ~/[,/~ q DEPTH TO WATER: q ~. 0 ~' ft PROJECT NO.: TOTAL DEPTH,OF WELL: Sq. I "L., ft ~ROJECT NAME:- /¢~'. F~ WELL DIAMETER: ~" DATE: ~/V/O ~ CASING VOLUME: !-V O gallons SAMPLEDBY: C¢ ¢ METHOD OF PURGING: , ~¢ P~-- PURGE CHARACTERISTICS TEMP pH SEC SAMPLE REMARKS TIME INTAKE RATE CMM. VOL WELL VOL (F~) (UNITS) (pmhos/ CONTROL DEPTH (GPM) (GAL) PUMPED cra) NO. (COLOR, TuRBIDlY, ETC.) 13:5 oi.oo ?1.* s. O. aH CALIBRATION / STANDARDIZED BUFFER SOLUTION pH 4.01 pH 7.0 pH 10.0 Well Capacity: 2" - 0.1632 galloWlinear foot 4" - 0.6528 galloWlinear foot TEMP F' 6" - 1.4688 gallo~inear foot INSTRUMENT READING . ..,.~-,:.~.,,~.,..~*., ...... SPECIFIC ELECTRILCAL CONDUCTANCE - CALIBRATION / STANDARDIZATION KCL SOLUTION pMHOS / CM ~ 25 C' 74 718 1413 6888 58640 TEMP P ~ INSTRUMENT READING -- ~ SAM~EO AT: ~ ~.a ~..~NA~ D~PTH TO WAT~: ' ~. ~ CAS~N~ VOlUMeS: ~ · I I GALS.~ - ~OlfiS: 'lib E2C, Inc WATER QUALITY SAMPLING RECORD Groundwater Scientists: Environmental Consultants AND WELL DEVELOPMENT DATA 5640 District Blvd Suite 102 Bakersfield, CA 93313 SAMPLE ID OR WELL NO.: J~,J./'-,~" DEPTH TO WATER: "/3. aa PROJECT NO.: TOTAL DEPTH OF WELL: ~ 7. ~ O ft PROJECT NAME: · ~t' 'F~,.~-'~ WELL DIAMETER: ~" DATE: ¢/~J~! CASING VOLUME: ,2..,~ gallons SAMPLED BY: PURGE CHARACTERISTICS EMP pH SEC SAMPLE REMARKS TiME INTAKE RATE CUM. VOL WELL VOL (Fo) (UNITS) (pmhos/ CONTROL DEPTH (GPM) (GAL) PUMPED cm) NO. (COLOR, TURBiDlY, ETC.) pH CALIBRATION / STANDARDIZED BUFFER SOLUTION pH 4,01 pH 7,0 pH 10,0 Well Capacity: 2" - 0,1632 galloMinear foot TEMP F" 4" - 0,6528 gallo~inear foot INSTRUMENT READING . 6' - 1,4688 gallo~inear TEMP F" INSTRUMENT READING SAMPLEDAT: ~ ~, ~ ~ ~, FINAL DEPTH TO WATER: ~3' ~ ~ , ~' 3OASINGVOLUMES= ~ ~ ~ GALS. NOTES: E2C~ Inc WATER QUALITY SAMPLING RECORD Groundwater Scientists: Environmental Consultants AND WELL DEVELOPMENT DATA 5640 District Bird Suite 102 Bakersfield, CA 93313 . SAMPLE ID OR WELL NO.: A~L) -(_c.~ DEPTH TO WATER: /..//, .~ O ft PROJECT NO.: TOTAL DEPTH OF WELL: ~ 3, ! f; ft PROJECT NAME: A~. ~ WELL DIAMETER: Z'' 'DATE: '/~/OI CASING VOLUME: ~. ~ff 9allons SAMPLEDBY: Coo~ METHOD OF PURGING: Ale ~:~m ~m~'~ ..... PURGE CHARACTERISTICS TEMP pH SEC SAMPLE REMARKS TIME INTAKE RATE CUM. VOL WELL VOL (Fo) (UNITS) (~mhos/ CONTROL DEPTH (GPM) (GAL) PUMPED cm) NO. (COLOR, TURBIDLY, ETC.) ' , · · ct~b ~o o~ ~pH CALIBRATION / STANDARDIZED BUFFER SOLUTION pH 4.01 pH 7.0 pH 10.0 Well Capacity: 2" - 0.1632 gallo~linear foot TEblP F' 4' - 0.6528 gallo~linear foot ,INSTRUMENT READING 6' - 1.4888 gallo~inear foot SPE'OIFJC ELE~TRIL~AL CoNDUCtANCE - CALIBRATION/STANDARDIZATION KCL SOLUTION pMHOS/CM ~ 25C~ 74 718 1413 6868 58640 _ TEMP P INSTRUMENT READING S~M~ A~: ~//, 3~ ~. ~,~A~ ~H ~O W~: W I- ~ ~ ~.~ C~S,N~ VO~S: ~- ~' ~A~S. NOTES: E2C, Inc WATER QUALITY SAMPLING RECORD Groundwater Scientists:Environmental Consultants AND WELL DEVELOPMENT DATA · 5640 District Blvd Suite 102 Bakersfield, CA 93313 ..,~ .................................................... ~ -' SAMPLE ID OR WELL NO.: )~v~/- 7 DEPTH TO WATER: (.//~.~'--Z._ ft TOTAL DEPTH OF WELL: ~, PROJECT NO.: WELL DIAMETER: ~1 ~ ~ROJECTNAME: ~ ~>~ / ~ CASiNG VOLUME: '/.~~ gallons DATE: C ~ ol , , SAMPLED BY: _'C :--o~/ ~O r~ METHOD OF PURGING: ~ ..... ~URGE cHARAcTERISTIcS ' ...... "'" TEM~' pH SEC .... ;" '~;~IPLE .... ' ...... REM'~'~ ........ TIME INTAKE RATE CUM. VOLWELL VOL' (Fo) (UNITS)(pmhos/ CONTROL (COLOR, TURBIDLY, ETC.) DEPTH (GPM) (GAL) PUMPED cm) NO. I'?'.vt ~ 7F~ ~'~' o.~ ~'~' / ?:~ ~ 77.~ 5' ~ o,'~ ~H CALIBRATION / STANDARDIZED BUFFER SOLUTION pH 4.01 pH 7.0 pH 10.0 Well Capacity: 2" - 0.1632 gaZloWlinear foot 4" - 0.6528 galloglinear foot TEMP F' 6" - 1.4688 gailo~inear foot INSTRUMENT READING TEMP P . ~ ~ ~ ~ INSTRUMENT READING · ~ ~ ~ ~ SAM~OAT: M% ~ ~. ,I~A~O~THTOW~T~: y%->'~ ~. ~CAS[NGVO~UM~S= GA~S. NOTES: I E2C, inc WATER QUALITY SAMPLING RECOR ,D Groundwater Scientists: Environmental Consultants AND WELL DEVELOPMENT DATA 5640 District Blvd Suite 102 Bakersfield, CA 93313 SAMPLE ............................................... ID OR WELL NO.: ~'~ 5 DEPTH TO WATER: ("/~"~' ~ ft PROJECT NO.: · TOTAL DEPTH OF WELL: PROJECT NAME: ~t/~-. '~,~ WELL DIAMETER: ~ ~1 DATE: ~/~J~ CASING VOLUME: {~. gallons SAMPLED BY: ' METHOD OF PURGING:, I ''~URGE CHARACTERISTICS TEMP pH SAMPLE REMARKS TIME ~ INTAKE RATE CUM. VOL WELL VOL (F°) (UNITS) CONTROL DEPTH (GPM) (GAL) PUMPED NO. (COLOR, TURBIDI~,'ETC.) I~:/~~ o,~o 7~ ~ 1:1~ .~ ~2.~ ~.~ ~ " ,, ~?:~o 'Z.~ 7]. ~ S .~ ~ ,, ., I I pH CALIBRATION / STANDARDIZED TEMPiNsTRUMENTBUFFERp SOLUTIONREADiNG pH 4.01 pH 7.0 pH 10.0 Well Capacity: 4"2"6. -" 10'65280'1632.4688 gallorvlineargall°n/lineargall°n/linear footf°°tf°°t S ~"E~6i~i'C:~LEoT~ii~L 'C'O'N ~ ~'~'.~C'E- CALIBRATION/STANDARDIZATION KOL SOLUTION pMHOS / CM @ 25 C° 74 718 1413 '6868 58640 TEMP F· INSTRUMENT READING I SAMPLED AT: U/"~. '~' FT. FINAL DEPTH TO WATER: ~'~ "~' ~ (' , ~. 3 CAS,NG VOLUMES: ~. I GALS. NOTES: I E2C, Inc WATER QUALITY SAMPLING RECORD Groundwater Scientists: Environmental Consultants AND WELL DEVELOPMENT DATA 5840 District Bird Suite 102 Bakersfield, CA 93313 SAMPLE ID OR WELL NO.: //~'~ '-q DEPTH TO WATER: /1/''~- ~'''' ~' ft PROJECT NO.: TOTAL DEPTH OF WELL: ..5""O, ¢¢ o ft PROJECT NAME: J/~'-. WELL DIAMETER: DATE: ~/~/O ~ CASING VOLUME:I.I q gallons I '1 SAMPLED BY: Coo,r~C-&"~ METHOD OF PURGING: ~.,~_~ PURGE CHARACTERISTICS TEMP pH SEC SAMPLE REMARKS TIME INTAKE RATE CUM. VOL WELL VOL (F°) (UNITS) (.umhos/ CONTROL DEPTH (GPM) (GAL) PUMPED cm) NO. (COLOR. TURBIDITY. ETC.) 3 7o. pH CALIBRATION / STANDARDIZED BUFFER SOLUTION pH 4.01 pH 7.0 pH 10.0 Well Capacity: 2" - 0.1632 galloWlinear foot TEMP F' 4" - 0.6528 gailoWiinear foot INSTRUMENT READING 6" ' 1.4688 gailo~inear foot SPECIFIC ELE~TRIL~XL cONDdC~A~OE' cALI~A~i~ / S~i~B~R~IZA;10N KCL SOLUTION pN1HOS / OM G 25 O' 74 718 1413 6868 58640 TEMP F' INSTRUMENT READING - I SAMPLEOAT: ~,~ ~ ~. FiNAL DEPTH TO WATER: y~,~~ ~. 3CASiNGVOLUMES=~,~ GALS. NOTES: E~C, inc WATER QUALITY SAMPLING RECORD Groundwaler Scientists: Env ronmental ,Consultants AND WELL DEVELOPMENT DATA 5640 District Bird Suite 102 Bakersfield, CA 93313 SAMPLE ID OR WELL NO,: /~U/-' IO DEPTH TO WATER: b/,..~'- ~' ~ ft ~PROJECT NO.: TOTAL DEPTH OF WELL:' ,.~" 2 ·· ~ ~! ft ~o~C~NA,,~: /~ ~. ~,,'-t- w~,, ~,AM~: Z" " 'PURGE CHARACTERISTICS TEMP pH SEC SAMPLE REMARKS TIME INTAKE RATE CUM. VOL WELL VOL (Fo) (UNITS) (pmhos/ CONTROL DEPTH (GPM) (GAL) PUMPED cra) NO. (COLOR, TURBIDLY, ETC.) t~:~o q5.~ ~L 0 ~2 ~ f2:57 g~.*~ L 70.3 ~-~O. tv f2;$~ ~ 70.'z ' c/ 70. t ~'~0'~7 pH CALIBRATION / STANDARDIZED BUFFER SOLUTION pH 4.01 pH 7.0 pH 10.0 Well Capacity: 2" - 0.1632 gallo~linear foot TEMP F' 4" - 0.6528 gallo~inear foot INSTRUMENT READING 6" - 1.4688 gallo~inear foot KCL SOLUTION ~MHOS / CM ~ 25 C" 74 718 1413 6868 58840 TEMP F' INSTRUMENT READING NOTES: I I E2C, Inc WATER QUALITY SAMPLING RECORD Groundwater Scientists: Environmental Consultants AND WELL DEVELOPMENT DATA 5640 Distdct Bird Suite 102 Bakersfield, CA 93313 SAMPLE ID OR WELL NO.: ,/~ - ~ t DEPTH TO WATER: ~ 7, ''~ ~ ft PROJECT NO.: TOTAL DEPTH OF WELL: t//B. { ~ ft PROJECT NAME: ~,'~lt. ~5~ WELL DIAMETER: CAS, vo M : SAMPLED BY: METHOD OF PURGING: PURGE CHARACTERISTICS TEMP pH SEC SAMPLE REMARKS TIME INTAKE RATE CUM. VOL WELL VOL (F°) (UNITS) (~mhos/ CONTROL . . DEPTH (GPM) (GAL) PUMPED cm) NO. (COLOR, TURBIDLY, ETC.) '1 pH CALIBRATION / STANDARDIZED BUFFER SOLUTION pH 4.01 pH 7.0 pH 10.0 Well Capacity: 2" - 0.1632 gallo~inear foot TEMP F" 4" - 0.6528 galloMinear foot INSTRUMENT READING 6" - 1.4688 galloWlinear foot SPECIFIC EL IL A C ND CTANCE - CALIBRATION/STANDARDIZATION KCL SOLUTION pMHOS / CM ~ 25 C' 74 718 1413 6868 58640 TEMP F" INSTRUMENT READING SAMPLED AT: ~. FINAL DEPTH TO WATER: ~. 3 CASING VOLUMES= GALS. NOTES: E2C, ]nc WATER QUALITY SAMPLING RECORD Groundwater Sdientists: Environmental Consultants AND WELL DEVELOPMENT DATA .......... .5.,6....4.0, .;D.i~!rict BIvd Suite 102 Bakersfield, CA 93313 SAMPLE ID OR WELL NO.: ,/~ ~ - [ ~ ~'~ DEPTH TO WATER: ~"Y"/' 7 6 ft PROJECT NO.: TOTAL DEPTH OF WELL: ~3. '~' % ft PROJECT NAME: ~ ~,' i~"O~S,''4j- WELL DIAMETER: 2., '~' DATE: ~/y/o/ CASING VOLUME: I°v?-' gallons SAMPLED BY: ~_oO~-~'-./PO~T~ r~ ~.- METHOD OF PURGING: /~ . . . . . .,.:.. ,rr~:".-'. · .:.- : .... - '.- ' ~ ' ~ t'"" ': '" ":"'~" ''~" ' 'PURGE CHARACTERI STICS TEMP pH SEC SAMPLE REMARKS TIME INTAKE RATE CUM. VOL WELL VOL (Fo) (UNITS) (pmhos/ CONTROL DEPTH (GPM) (GAL) PUMPED cra) NO. (COLOR, TURBIDITY, ETC.) ly:~g , 3 7q.~ 5'.~o v.'~* ', lpH CALIBRATION / STANDARDIZED SUFFER SOLUTION pH 4.01 pH 7.0 pH 10.0 Well Capacity: 2" - 0.1632 galloMinear foot 4" - 0.6528 galloMinear foot TEMP F· 'INSTRUMENT READING 6"- 1.4688 gallo~inear foot S;'"E:~I;j~"~LE~T~I~L ~N;~;2;O~- CALIBRATION/STANDARDIZATION KCL SOLUTION pMHOS / CM G 25 C~ 74 718 1413 6868 58640 TEMP P INSTRUMENT READING . SAM,~,o~: Cy. ~ ~. ,,NA~,H~OW~,,: ~ ~ 7 ~ ~. ~C~S,N~VO~UM~S:d, ~. NOTES: E2C, Jnc WATER QUALITY SAMPLING RECORD Groundwater Scientists: Environmental Consultants AND WELL DEVELOPMENT DATA 5640 District Blvd Suite 102 Bakersfield, CA 93313 SAMPLE ID OR WELL NO.: ~W - [ ~' DEPTH TO WATER: ft PROJECT NO.: TOTAL DEPTH OF WELL: ft · DATE: 0 [ CASING VOLUME: SAMPLED BY: METHOD OF PURGING: PURGE CHARACTERISTICS TEMP pH SEC SAblPLE REMARKS TIME INTAKE RATE CUM. VOL WELL VOL (F°) (UNITS) (pmhos/ CONTROL DEPTH (GPM) (GAL) PUMPED cm) NO. (COLOR, TURBIDITY, ETC.) pH CALIBRATION / STANDARDIZED BUFFER SOLUTION pH 4.01 pH 7.0 pH 10.0 Well Capacity: 2" - 0.1632 gallon/linear foot TEMP F' 4" - 0,6528 gallon/linear foot INSTRUMENT READING 6" - 1.4688 gaTIorvlinear foot s~"E'di~i'O'~LE'o~iL'~L 'C'O'NI~'U ~'~,I~C'E- CALIBRATION/STANDARDIZATION KCL SOLUTION pMHOS / CM @ 25 Co 74 718 1413 6888 58840 TEMP F· INSTRUMENT READING SAMPLED AT: FT. FINAL DEPTH TO WATER: FT. 3 CASING VOLUMES= GALS. I I I '1 I I I I I I I I I I I I I I I E2C~ Inc .WATER QUALITY SAMPLING RECORD Groundwater Scientists: Environmental Consultants AND WELL DEVELOPMENT DATA 5640 District BIvd Suite 102 Bakersfield, CA 93313 SAMPLE ID OR WELL NO.: /~.~- [ ''~ DEPTH TO WATER: ~. ~'~ ft PROJECT NO.: TOTAL DEPTH OF WELL: "7 7. ~ ft PURGE CHARACTERISTICSTEMP pH SEC SAMPLE REMARKS TIME INTAKE RATE CUM. VOL WELL VOL (F°) (UNITS) (~mhos/ CONTROL DEPTH (GPM) (GAL) PUMPED cra) NO. (COLOR, TURBIDLY, ETC.) pH CALIBRATION / STANDARDIZED BUFFER SOLUTION pH 4.01 pH 7.0 . pH 10.0 Well Capacity: 2" - 0.1632 gallo~linear foot TEMP F" 4" - 0.6528 gallo~inear foot INSTRUMENT READING 6" - 1.4888 gallo~inear foot KCL SOLUTION pMHOS / CM G 25 C~ 74 718 1413 6~68 5,9640 TEMP F' INSTRUMENT READING NOTES: I I E2C, lnc WATER QUALITY SAMPLING RECORD Groundwater Scientists:Environmental Consultants AND WELL DEVELOPMENT DATA 5640 District Blvd Suite 102 Bakersfield, CA 93313 SAMPLE ID OR WELL NO.: ~/ '-- I q DEPTH TO WATER: PROJECT NO.: TOTAL DEPTH OF WELL: ~, ~ O ft SAMPLED BY: ~ METHOD OF PURGING: PURGE CHARACTERISTICSTEMP pH SEC SAMPLE REMARKS TIME INTAKE RATE CUM. VOL WELL VOL (Fo) (UNITS) (pmhos/ CONTROL DEPTH (GPM) (GAL) PUMPED cra) NO. (COLOR, TURBIDLY, ETC.) pH CALIBRATION / STANDARDIZED BUFFER SOLUTION pH 4.01 pH 7.0 pH 10.0 Well Capacity: 2" - 0.1632 gaIIo~linear foot TEMP F' 4" - 0.6528 gallo¢inear foot INSTRUMENT READING 6' - 1.4688 gallo~inear foot , SPE'ClFIC ELE~TRIL~XL C0NDdO~ANOE- cAb'&hA~,;~'/sTiND;RblZ'Afl0N XCL SOLUTION ~MHOS/CM ¢ 2~C' ~4 ~8 ~4~3 e8~8 58~40 TEMP P INSTRUMENT READING ~. ~CAS,~vo~uM~s=5' ~' ~A~S. m .. FINAL DEPTH TO WATER: ~,'O NOTES: I I pr~_iect Number 1801BK04 A~/g~Ist 15. 2001 I I :1 I I I I ~ APPENDIX J I Second Quarter 2001 Analytical Laboratory Report I I I I I I I I E2C Remediation, LLC Appendix J I Halcyon Laboratories I ~/'O"~,.~, ~2.(~ u .../Chain of Custody Form Client Name: E2C, Inc 661.831.6906 fax 661.831.6234 Analysis Requested Sample Matdx ~ ~ ~e~ ~ 8 .Aqueous Client Address: 564'0 District Blvd., Suite 102. Bakersfield, CA 93313 Projed Manager: L~¢ So~ ~ < ~ ~ ~ o 0 ~' ~~ ~ Sample Date Sample Time Sample Description and Container Type ~ Comments Relinquished By: ~~~k--~ Date:q~/O / Relinquished By: Date: Da~e: Halcyon Laboratories Chain of Custody Form Client Name: E2C, Inc 661.831.6906 [ax 661.831.6234 Analysis Requested. -- ..~ Sample Matdx ~ ~ ~ ~ ~ Aqueous Client Address: 5640 District Blvd., Suite 102. Bakersfield, CA 93313 ~. ~. ~ ~< ~< ~. ~ o ~ ~ ~ ~ ~ ~ Soil Project Manager: ¢ ~ ~ ~ ~ < ~ ~ Sample Dale Sample Time Sample Descriplion and Container Type ~ ~ ~- ~ > ~ ~ ~ ~ ~ Commenls Relinquished By: ,~ ~~_ Date:~~[. Relinquished By: Date: _/ [ Received By: ~~¢ ' Date:~/OQ_[ Received By: Date: Halcyon Laboratories, Inc. EPA 8260B Laboratory Report Water Sample Results in ug/L Certification # 1920 cLIENT: E2C Inc. 5640 District Bivd Suite 102 Bakersfield, CA 93313 Project ID: Mr Fast Report Date: 6/27/01' Sample ID: Travel Blank Analyte Result Method RL Units 5 Oxygenates t-Butanol (TBA) Ted-Butyl Alcohol ND 2.5 ug/L Methyl Ted-Butyl Ether (MTBE) ND 0.5 ug/L Diisopr0pyl Ether (DIPE) ND 0.5 ug/L Ethyl Ted-Butyl Ether (ETBE) ND 0.5 ugfL Ted-Amyl Methyl Ether (TAME) ND '0.5 ug/L BTEX Components Benzene ND ' 0.5 ug/L Toluene ND 0.5 ug/L Ethylbenzene ND 0.5 ug/L m & p Xylenes . ND .0.5 ug/L o Xylenes ND 0.5 ug/L Internal Standards Results % Recovery Benzene, fluoro 50.0 100% Benzene-d5, chloro- 50.0 100% 1,4-Dichlorobenzene-d4 50.0 100% Surrogate Standards Methane, dibromofluoro- 56.1 112% 1,2-Dichloroethane-d4 56.0 112% Toluene-dO 41.6 83% p-Bromofluorobenzene (BFB) 54.1 108% Halcyon Laboratories, :Inc. EPA 8260B Laboratory Report Water Sample Results in ug/L Certification # 1920 CLIENT: EzC Inc. 5640 District Bivd Suite 102 Bakersfield, CA 93313 Project ID' Mr Fast Report Date · 6/27/01 Sample ID,: MW-2 Analyte Result Method· RL Units 5 Oxygenates t-Butanol (TBA) Ted-Butyl Alcohol ND 2.5 u~L Methyl Tert-Butyl Ether (MTBE) ND. 0.5 ug/L Diisopropyl Ether (DIPE) ND 0.5 ug/L Ted-Butyl Ether (ETBE) ND 0.5 ug/L Ethyl Ted-Amyl Methyl Ether (TAME) ND 0.5 u°d'L BTEX Components Benzene ND 0.5 ug/L Toluene ND 0.5 u°w~L Ethylbenzene ND 0.5 ug/L m & p Xylenes ND 0.5 ug/L o Xylenes ND 0.5 ug/L I Internal Standards Results % Recovery I Benzene, fluoro 50.0 100% Benzene-dS, chloro- 50.0 100% 1,4-Dichlorobenzene-d4 50.0 100°/0 I Surrogate Standards Methane, dibromofluoro- 54.7 109% I 1,2-Dichloroethane-d4 57.5 115% Toluene-d8 41.6 83% p-Bromofluorobenzene (BFB) 58.8 118% I · Halcyon LaboratorieS~ Tnc. EPA 8260B Laboratory Report Water Sample Results in ug/L I Certification # 1920 CLIENT: EzC Inc. I 5640 District Blvd Suite 102 Bakersfield, CA 93313 I Project ID ' Mr Fast I Report Date' 6/27/01 Sample ID: MW-5 I i Analyte Result Method RI. Units ,5 Oxygenates I t-Butanol (TBA) Ted-Butyl Alcohol ND 2.5 Methyl Ted-Butyl Ether (MTBE) ND 0.5 ug/L Diisopropyl Ether (DIPE) ND 0.5 ug/L I Ethyl Ted-Butyl Ether (ETBE) ND 0.5 Ted-AmyJ Methyl Ether (TAME) ND 0.5 ug/L I BTEX Components Benzene ND 0.5 ug/L I Toluene ND 0.5 Ethylbenzene ND 0.5 ug/L m.& p Xylenes ND 0.5 ug/L i o Xylenes ND 0.5 u°d~L Internal Standards Results % Recovery Benzene, fluoro 50.0 100% Benzene-dS, chloro- 50.0 100% 1,4-Dichlorobenzene-d4 50.0 100% Surrogate Standards Methane, dibromofluoro- 51.6 103% 1,2-Dichloroethane-d4 55.3 111% Toluene-d8 45.5 91% p-Bromofluorobenzene (BFB) 58.3 117% Halcyon Laboratories, :[nc. EPA 8260B Laboratory Report Water Sample Results in ug/L Certification Ct 1920 CLIENT: E2C Inc. 5640 District Bird Suite 102 Bakersfield, CA 93313 Project ID: Mr Fast Report Date: 6/27/01 Sample ID: M.W-6 Analyte Result Method RL Units $ Oxygenates t-Butanol (TBA) Ted-Butyl Alcohol ND 2.5 ug/L Methyl Ted-Butyl Ether (MTBE) ND 0.5 ug/L Diisopropyl Ether (DIPE) ND 0.5 u°~% Ethyl Ted-Butyl Ether (ETBE) ND 0.5 ug/L Tert-Amyl Methyl Ether (TAME) ND 0.5 ug/L BTEX Components Benzene ND 0.5 ug/L Toluene ND 0.5 u°~L Ethylbenzene ND 0.5 ug/L m & p Xylenes ND 0.5 tl°~ o Xylenes ND 0.5 ug/L I Internal Standards Results % Recovery I Benzene, fluoro 50.0 100% Benzene-dS, chloro- 50.0 100% 1,4-Dichlorobenzene-d4 50.0 100% I Surrogate Standards Methane, dibromofluoro- 52.5 1050/o I 1,2-Dichloroethane-d4 53.7 107% Toluene-d8 43.7 87% p-Bromofluorobenzene (BFB) 58.9 118% I I I I I I I I I I I I I I I I I I I I Halcyon Laboratories, Inc. EPA 8260B Laboratory Report Water Sample Resultsin ug/L Certification # 1920 CLIENT: E2C Inc. 5640 District Blvd Suite 102 Bakersfield, CA 93313 Project ID · Mr Fast Report Date: 6/27/01 Sample ID: MW-10 Analyte Result Method RL Units 5 Oxygenates t-Butanol (TBA) Ted-Butyl Alcohol ND 2.5 ug/L Methyl Ted-Butyl Ether (MTBE) ND 0.5 ug/L Diisopropyl Ether (DIPE) ND 0.5 ug/L Ethyl Ted-Butyl Ether (ETBE) ND 0.5 Ted-Amyl Methyl Ether (TAME) ND 0.5 ug/L BTEX Components Benzene ND 0.5 ug/L Toluene ND 0.5 Ethylbenzene ND 0.5 ug/L m .& p Xylenes ND 0.5 ug/L o Xylenes ND 0.5 uo~L I Internal Standards Results % Recovery I Benzene, fluoro 50.0 100% Benzene-dS, chloro- 50.0 100% 1,4-Dichlorobenzene-d4 50.0 100% I Surrogate Standards Methane, dibromofluoro- 53.6 107% I 1,2-Dichloroethane-d4 60.2 120% Toluene-d8 43.5 87% p-Bromofluorobenzene (BFB) 52.2 104% I I Halcyon Laboratories, [nc. ~ EPA 8260B Laboratory Report Water Sample Results in ug/L I Certification # 1920 I CLIENT: EzC Inc. 5640 DistrictBlvd Suite 102 Bakersfield, CA 93313 I Project ID · Mr Fast I Report Date: 6/27/01 Sample ID: MW-9 I i ' Analyte Result Method RL Units 5 Oxygenates I t-Butanol (TBA) Ted-Butyl Alcohol ND 2.5 u°=/L Methyl Ted-Butyl Ether (MTBE) ND 0.5 ug/L Diisopropyl Ether (DIPE) ND 0.5 u~tL I Ethyl Ted-Butyl Ether (ETBE) ND O.5 ug/'L Ted-Amyl Methyl Ether (TAME) ND 0.5 uowfL I BTEX Components Benzene ND 0.5 ug/L I Toluene ND 0.5 ug/L Ethylbenzene ND 0.5 ug/L m & p Xylenes ND 0.5 ug[L I o Xylenes ND 0.5 ug/L I Internal Standards Results % Recovery. I Benzene, fluoro 50.0 100% Benzene-d5, chloro- 50.0 100% 1,4-Dichlorobenzene-d4 50.0 100% I Surrogate Standards Methane, dibromofluoro- 50.0 100% I 1,2-Dichloroethane-d4 57.6 115% Toluene-d8 45.0 90% p-Bromofluorobenzene (BFB) 57.1 114% ! I Halcyon Laboratories, Inc. · EPA 8260B Laboratory Report Water Sample Results in ug/L I Certification Ct 1920 I CLIENT: EzC Inc. 5640 District Bird Suite 102 Bakersfield, CA 93313 Project ID · Mr Fast 'l ~ Report Date ·6/27/01 Sample ID · l~iw-4 i Analyte Result Method RL Units § Oxygenates I t-Butanol (TBA) Tert-Butyl Alcohol ND 2.5 Methyl Tert-Butyl. Ether (MTBE) ND 0.5 ug/L i Diisopropyl Ether (DIPE) ND 0.5 u~u'L Ethyl Tert-Butyl Ether (ETBE) ND 0.5 uo~/L Tert-Amyl Methyl Ether (TAME) ND 0.5 ug/L I BTEX Components Benzene ND 0.5 u°~/L I Toluene ND 0.5 ug/L Ethylbenzene ND 0.5 ug/L m & p Xylenes ND 0.5 ug/L . I o Xylenes ND 0.5 uo~/L I Internal Standards Results % Recovery I Benzene, fluoro 50.0 100% Benzene-dS, chloro- 50.0 100% 1,4-Dichlorobenzene-d4 50.0 100% I Surrogate Standards Methane, dibromofluoro- 52.9 106% I 1,2-Dichloroethane-d4 55.3 ! 11% Toluene-d8 46.5 93% p-Bromofluorobenzene (BFB) 56.5 113% 1 1 Halcyon Laboratories, [nc. EPA 8260B 'Laboratory Report water Sample Results in ug/L Certification # 1920 CLIENT: E2C Inc. 5640 District Bird Stfite 102 Bakersfield, CA 93313 Project ID' Mr Fast Report Date' 6/27/01 Sample ID · MW-3 Analyte Result Hethod RL Units 5 Oxygenates t-Butanol (TBA) Ted-Butyl Alcohol ND 25.0 ug/L Methyl Ted-Butyl Ether (MTBE) ND 5.0 ug/L Diisopropyl Ether (DIPE) ND 5.0 ug/L Ether ND 5.0 Ethyl Ted-Butyl (ETBE) Tert-Amyl Methyl Ether (TAME) ND $.0 ug/L BTEX Components Benzene ND 5.0 ug/L Toluene ND 5.0 ug/L Ethylbenzene ND 5.0 ug/L m & p Xylenes ND 5.0 o Xylenes ND 5.0 ug/L I Internal Standards Results % Recovery I Benzene, fluoro 50.0 100% Benzene-d5, chloro- 50.0 100% 1,4-Dichlorobenzene-d4 50.0 100% I Surrogate Standards Methane, dibromofluoro- 55.8 112% I 1,2-Dichloroetha ne-d4 57.9 116% Toluene-d8 46.8 94% p-Bromofluorobenzene (BFB) 58.6 117% ! I I Halcyon Laboratories, Inc. ~ EPA 8260B Laboratory Report Water Sample Results in ug/L ICertification Ct 1920 i CLIENT: E2C'Inc. 5640 District Bird Suite 102 · Bakersfield, CA 93313 I Project ID · Mr Fast I Report Date · 6/27/01 Sample ID: MW-15 I i Analyte Result Method RL Units 5 Oxygenates I t-Butanol (TBA) Ted-Butyl Alcohol ND 25.0 ug/L Methyl Tert-Butyl Ether (MTBE) ND 5.0 ug/L i Diisopropyl Ether (DIPE) ND 5.0 ug/L Ethyl Ted-Butyl Ether (ETBE) ND 5.0 uo=/L Ted-Amyl Methyl Ether (TAME) ND 5.0 ug/L I BTEX Components Benzene ND 5.0 u~dT, I Toluene ND 5.0 uo=/L Ethylbenzene ND 5.0 uo~dT, m & p XCenes ND 5.0 uo~L I o Xylenes ND 5.0 ug/L Znternal Standards Results % Recovery Benzene, fluoro 50.0 100% Benzene-d5, chloro- 50.0 100% 1,4-Dichlorobenzene-d4 50.0 :100% Surrogate Standards Methane, dibromofluoro- 51.6 103% 1,2-Dichloroethane-d4 55.4 111% Toluene-d8 44.9 90% p-Bromofluorobenzene (BFB) 55.2 110% Halcyon Laboratories, Inc. EPA 8260B Laboratory Report Water Sample Results in ug/L Certification # 1920 - CLIENT: E2C Inc. 5640 District Blvd Suite 102 Bakersfield, CA 93313 Project ID: Mr Fast Report Date · 6/27/01 Sample ID: MW-14 Anal¥te -' Result Method RI. Units 5 Oxygenates t-Butanol (TBA) Tert-Butyl Alcohol ND 25.0 ug/L Methyl Tert-Butyl Ether (MTBE) ND 5.0 ug/L Diisopropyl Ether (DIPE) ND 5.0 ug/L Ethyl Tert-Butyl Ether (ETBE) ND 5.0 u~L Tert-Amyl Methyl Ether (TAME) ND 5.0 ugJL BTEX Components Benzene 871 5.0 ug~L Toluene 1494 5.0 ug/L Ethylbenzene 371 5.0 ug/L m & p Xylenes 537 5.0 ug,'L o Xylenes 520 5.0 ug/L I Internal Standards Results % Recovery I Benzene, fluoro 50.0 100% Benzene-dS, chloro- 50.0 100% 1,4-Dichlorobenzene-d4 50.0 1.00% I Surrogate Standards Methane, dibromofluoro- 4-7.9 96% I 1,2-Dichloroethane-d4 54.1 108% Toluene-d8 48.0 96% p-Bromofluorobenzene (BFB) 59.0 118% ! I Halcyon Laboratories, [nc. I EPA 8260B Laboratory Report water Sample Results in ug/L ICertification Ct 1920 i CLIENT: E2C Inc. 5640 District Blvd Suite 102 Bakersfield, CA 93313 I Project ID · Mr Fast I Report Date · 6/27/01 Sample ID ' MW-13 I i Analyte Result Hethod RL Units 5 Oxygenates I t-Butanol (TBA) Ted-Butyl Alcohol ND 250.0 ug/L Methyl Ted-Butyl Ether (MTBE) ND 50.0 ug/L i Diisopropyl Ether (DIPE) ND 50.0 ug/L Ethyl Ted-Butyl Ether (ETBE) ND 50.0 uo~L Ted-Amyl Methyl Ether (TAME) ND 50.0 ug/L I BTEX Components Benzene ND 50.0 ug/L I Toluene ND 50.0 tw~_. Ethylbenzene ND 50.0 u~UT, m & p Xylenes ND 50.0 ug/L I o Xylenes' ND 50.0 ug/L Internal Standards Results % Recovery Benzene, fluoro 50.0 100% Benzene-dS, chloro- 50.0 100% 1,4-Dichlorobenzene-d4 50.0 100% Surrogate Standards Methane, dibromofluoro- 54.4 109% 1,2-Dichloroethane-d4 59.2 118% Toluene-d8 45.5 91% p-Bromofluorobenzene (BFB) 60.6 121% , Halcyon Laboratories, :[nc. EPA 8260B'. Laboratory Report Water Sample Results in ug/L Certification Ct 1920 CLIENT: E2C Inc. 5640 District Bird Suite 102 Bakersfield, CA 93313 Project ID · Mr Fast Report Date · 6/27/01 Sample ID: MW-11R Analyte Result Method RL Units 5 Oxygenates t-Butanol (TBA) Ted-Butyl Alcohol ND 250.0 ug/L Methyl Ted-Butyl Ether (MTBE) ND 50.0 ug/L Diisopropyl Ether (DIPE) ND 50.0 ug/L Ethyl Ted-Butyl Ether (ETBE) ND 50.0 ug/L Tert-Amyl Methyl Ether (TAME) ND 50.0 uo=/L BTEX Components Benzene 540 50.0 ug/L Toluene 11,980 50.0 u~dT, Ethylbenzene 1,390 50.0 ug/L m & p Xylenes 3,870 50.0 ug/L o Xylenes 3,360 50.0 u o~gfL I Internal Standards Results % Recovery I Benzene, fluoro 50.0 100% Benzene-dS, chloro- 50.0 100% 1,4-Dichlorobenzene-d4 50.0 100% I Surrogate Standards Methane, dibromofluoro- 49.4 99% I 1,2-Dichloroethane-d4 53.9 108% Toluene-d8 45.0 90% p-Bromofluorobenzene (BFB) 57.2 114% I I Halcyon Laboratories, Inc. I EPA 8260B Laboratory Report Water Sample Results in ug/L Certification # 1920 I CLIENT: · EzC Inc. 5640 DistriCt Bird Suite 102 Bakersfield, CA 93313 I Project ID: Mr Fast I Report Date · 6/27/01 Sample ID: MW-1 I i Analyte Result Method RL Units § Oxygenates I t-Butanol (TBA) Ted-Butyl Alcohol ND 250.0 ugfL Methyl Ted-Butyl Ether (MTBE) ND 50.0 twd~L I Diisopropyl Ether (DIPE) ND 50.0 ug/L Ethyl Ted-Butyl Ether (ETBE) ND 50.0 ug/L Tert-Amyl Methyl Ether (TAME) ND 50.0 ugfL I BTEX Components Benzene ND 50.0 trolL' I Toluene 340 50.0 ' ug/L Ethylbenzene 1,610 50.0 ug/L m & p Xylenes 4,580 50.0 ug/L I o Xylenes 3,470 50.0 ug/L Internal Standards Results % Recovery Benzene, fluoro 50.0 100% Benzene-dS, chloro- 50.0 100% 1,4-Dichlorobenzene-d4 50.0 100% Surrogate Standards Methane, dibromofluoro- 54.9 110% 1,2-Dichloroethane-d4 58.3 ! 17% Toluene-d8 47,2 94% p-Bromofluorobenzene (BFB) 56.1 112% Halcyon Laboratories, :[nc. EPA 82603 Laboratory Report Water Sample Results in ug/L Certification # 1920 CLIENT: E2C Inc. 5640 District Bird Suite 102 Bakersfield, CA 93313 Project ID: Mr Fast Report Date · 6/27/01 Sample ID: MW-7 Analyte Result Method RL Units 5 Oxygenates t-Butanol (TBA) Ted-Butyl Alcohol ND 250.0 u~L Methyl Ted-Butyl Ether (MTBE) ND 50.0 ug/L Diisopropyl Ether (DIPE) ND 50.0 ug/L Ethyl Ted-Butyl Ether (ETBE) ND ug/L 50.0 Ted-Amyl Methyl Ether (TAME) ND 50.0 uod'L BTEX Components Benzene ND 50.0 ug/L Toluene 5,730 50.0 u~L Ethylbenzene 3,590 50.0 ug/L m & p Xylenes 7,680 50.0 u~L o Xylenes 5,550 50.0 ug/L I Internal Standards Results % Recovery I Benzene, fluoro 50.0 100% Benzene-dS, chloro- 50.0 100% 1,4-Dichlorobenzene-d4 50.0 100% I Surrogate Standards Methane, dibromofluoro- 57.3 115% I 1,2-Dichloroethane-d4 54.4 109% Toluene-d8 46.5 93% p-Bromofluorobenzene (BFB) 52.7 105% I. Halcyon Laboratories, ]:nc. EPA 8260B Laboratory Report Water Sample Results in ug/L Certification # 1920 CLIENT: E2C Inc. 5640 District Blvd Suite 102 Bakersfield, CA 93313 Project ID ' Mr Fast Report Date: 6/27/01 Sample ID: MW-8 Analyte Result Method RL Units 5 Oxygenates t-Butanol (TBA) Ted-Butyl Alcohol ND 250.0 ug/L Methyl Ted-Butyl Ether (MTBE) ND 50.0 ug/L Diisopropyl Ether (DIPE) ND 50.0 ug/L Ethyl Ted-Butyl Ether (ETBE) 50.0 i. lg/L Ted-Amyl Methyl Ether (TAME) ND 50.0 ug/L BTEX Components Benzene ND 50.0 ug/L Toluene 43,560 50.0 u°d'L Ethylbenzene 3,770 50.0 u g, rL, ~ m & p Xylenes 7,850 50.0 uo~q~ o Xylenes 6,910 50.0 uo. CL I Internal Standar'ds Results % Recovery I Benzene, fluoro 50.0 100% Benzene-dS, chloro- 50.0 100% 1,4-Dichlorobenzene-d4 50.0 100% I Surrogate Standards Methane, dibromofluoro- 55.3 111% I 1,2-Dichloroetha n e-d4 53.4 107% Toluene-d8 4.8.9 98% p-Bromofluorobenzene (BFB) 52.4 105% I I I I I I I I I I I I I I I I I I I I Halcyon LaboratorieS, Inc. EPA 8260B Laboratory Report Water Sample Results in ug/L Certification Ct 1920 CLIENT: E2C Inc. 5640 District Blvd Suite 102 Bakersfield, CA 93313 Project ID: Mr. Fast #1801BK01 4[24]01-4]27[01 Date ' 5/22/01 Report Sample ID: MW-1 1R Analyte Result t4ethod RI. Units ,5 Oxygenates t-Butanol (TBA) Ted-Butyl Alcohol ND 25.0 Methyl Ted-Butyl Ether (MTBE) ND 5.0 upffL Diisopropyl Ether (DIPE) ND 5.0 ug/L Ethyl Ted-Butyl Ether (ETBE) ND 5.0 ug/L Tert-Amyl Methyl Ether (TAME) ND 5.0 ug/L BTEX Components · Benzene 803 5.0 Toluene 18,750 5.0 ug/L Ethylbenzene 428 5.0 ug/L m & p Xylenes 4,438 5.0 u~, o Xylenes 4,212 5.0 uo~/L I Internal Standards Results % Recovery I Benzene, fluoro 42.9 86% Benzene-d5, chloro- 44.0 88% 1,4-Dichlorobenzene-d4 51.0 102% I SurrOgate Standards Methane, dibromofluoro- 40.1 80% I 1,2-Dichlo roethan e-d4 41.9 84% Toluene-d8 53.7 107% p-Bromofluorobenzene (BFB) 45.5 91% ! Halcyon Laboratories, :[nc. EPA 8260B LaboratOry Report waterSampleResults inug/L Certification Ct 1920 CLIENT: E2C Inc. 5640 District Blvd Suite 102 Bakersfield, CA 93313 Project ID: Mr. Fast #J. 80:I. BKO1 4/24/0J.'4/27/0J- Report Date: 5/22/01 .Sample ID: MW-12 Analyte Result Method RL Units 5 Oxygenates t-Butanol (TBA) Tert-Butyl Alcohol ND 25.0 uod'L 'Methyl Tert-Butyl .Ether (MTBE) ND 5.0 u°d'L Diis°propyl Ether (DIPE) ND 5.0 ug/L . Ethyl Tert-Butyl Ether (ETBE) ND 5.0 ug/L Tert-Amyl Methyl Ether (TAME) ND 5.0 ug/L BTEX Components Benzene 85 5.0 ug/L Toluene ' 284 5.0 uodI, Ethylbenzene 73 5.0 u ~d~l-~ m & p Xylenes 113 5.0 ug/L o Xylenes 82 5.0 ug/L Internal Standards Results % RecoverY Benzene, fluoro 40.8 82% Benzene-d5, chloro- 39.7. 79% 1,4-Dichlorobenzene-d4 45.9 92% ' Surrogate Standards Methane, dibromofluoro- 40.6 81% 1,2-Dichloroethane-d4 41.5 83% Toluene,d8 44.0 88% p-Bromofluorobenzene (BFB) 43.9 88% ,I I Halcyon Laboratories, Inc.." · ! EPA'8260B Laboratory Report Water Sample Results in Ug/L I Certification # 1920 i CLIENT: E2C Inc. 5640 District Blvd Suite 102 Bakersfield, CA 93313 I Project ID: Mr. Fast #1801BK01 4/24/01-4/27/01 I Report Date: 5/22/01 Sample ID: MW-13 I i Analyte Result MethOd RL Units 5 Oxygenates I t-Butanol (TBA) Ted-Butyl Alcohol ND 25.0 ug/L Methyl Ted-Butyl Ether (MTBE) ND 5.0 ug/L i Diisopropyl Ether (DIPE) ND 5.0 ug/L Ethyl Ted-Butyl Ether (ETBE) ND 5.0 ug/L Ted-Amyl Methyl Ether (TAME) ND 5.0 ug/L I BTEX Components Benzene 348 5.0 ug/L I Toluene 2,177 5.0 ug/L Ethylbenzene 1,289 5.0 ug/L m & p Xylenes 2,350 5.0 uod% I o Xylenes 2.251 5.0 ug/L I Internal Standards Results % Recovery I Benzene. fluoro 43.6 87% Benzene-d5, chloro- 43.4 87% 1.4-Dichlorobenzene-d4 ' 50.4 101% I Surrogate Standards Methane, dibromofluoro- 37.7 75% I 1,2-Dichloroethane-d4 40.7 81% Toluene-d8 47.7 95% p-Bromofluorobenzene (BFB) 46.6 93% I I Halcyon Laboratories, :[nc... EPA' 8260B Laboratory RePort Water Sample Results in ug/L Certification Ct 1920 CLIENT: EzC Inc. 5'640 District Bird Suite 102 Bakersfield, CA 93313 Project I.D" Mr. Fast #1801BK01 4/24/0I-4/27/01 Report Date · 5/22/01 Sample ID · MW-14 Analyte Result Method RL Units 5 Oxygenates t-Butanol (TBA) Ted-Butyl Alcohol ND 25.0 u~t~ Methyl Ted-Butyl Ether (MTBE) ND 5.0 ug/L' Diisopropyl Ether (DIPE) ND 5.0 ug/L Ethyl Ted-Butyl Ether (ETBE) ND 5.0 Ted-Amyl Methyl Ether (TAME) ND 5.0 ug/L BTEX Components Benzene 86 5.0 ug/L Toluene 286 5.0 ug/L Ethylbenzene 57 5.0 ug/L m & p Xylenes 107 5.0 ug/L o Xylenes 75 5.0 ug/L I Internal Standards Results % Recovery I Benzene, fluoro 42.2 84% Benzene-d5, chloro- 40.5 81%' 1,4-Dichlorobenzene-d4 46.3 93% I Surrogate Standards Methane, dibromofluoro- 40.3 81% I .1,2-Dichloroethane-d4 43.5 87% Toluene-d8 42.9 86% p-Bromofluorobenzene (BFB) 44.8 90% I I Halcyon Laboratories Chain of Custody Form Client Name: E2C, Inc 661.831.6906 fax 661.831.6234 Analysis Requested ,_ Sample Matrix ~ ~ ~ ~ ,9 I'~ Aqueous Client Address: 5640 District Blvd., Suite 102. Bakersfield, CA 93313 Sampler Name Sample Dale Sample Time Sample Description and Container Type Comments Y X I Turnaround Time Requested: 24 Flour 48 Hour 5-Day Standard Relinquished By: Date: ReliCquished By: Date: Received By: Date: Received By: .Dale: mm m mm mm mm m mm m m m mm m m m m m ~alc¥on Laboratories Chain of Custody Form Client Name: E2C, Inc 661.831.6906 fax 661.831.6234 Analysis Requested .. Sample Matrix Aqueous Client Address: 5640 District Blvd., Suite 102. Bakersfield, CA 93313 ~. ~- .< < ~. ~o Project Manager: Sample Dale Sample Time Sample Description and Container Type m ~ ~ ~ > ~ ~ ~ ~ ~ Comments Turnaround Time Requested: 24 Hour ~ 48 HoUr __ 5-Day Standard Relinquished By: ~.,~~,~. ~ ~Date:¢/~'/~,~' Relinquished By: Date: ~ -- I ', Received By: Date: Received By: Date: Halcyon Laboratories, Inc. Laboratory Report Certification # 1920 CLIENT E2C Inc. Project Name: Mr Fast 5640 District Blvd Suite 102 Bakersfield, CA 93313 Matrix: Aqueous Sampledby: Bill Cooper TESTS: TPH Gas by EPA 8015M TPHg Analysis: 6/12/01 Date of Report: 6/27/01 Units: ug/L Sample#: 2K1-1160 2K1~1161 2K1-1162 2K1-1163 2K1-1164 2K1-1165 2K1-1166 Date Sampled: 6/4/01 6/4/01 6/4/01 6/4/01 6/4/01 6/4/01 6/4/01 I)L ug/L Sample Description: T-Blank MW-2 MW-5 MW-6 MW-10 MW-9 MW4 TPH Gasoline ND ND ND 397 ND ND ND 50 Surrogate Recovery % 84 86 80 113 116 103 119 Sample#: 2K1-1167 2K1-1168 2K1-1169 2K1-1170 2K1-1171 2K1-1265 2K1-1266 Date Sampled: 6/4/01 6/4/01 6/4/01 6/4/01 6/4/01 6/4/01 6/4/01 I)L ugyL !Sample Description: ! MW-1 IR MW-13 MW-14 MW-1 MW-3 MW-15 MW-8 TPIt Gasoline 54,410 5,580 9,240 65,740 383 388 64,320 50 Surrogate Recovery % 108 82 98 99 116 116 85 Sample #: 2K1-1267 Date Sampled: 6/4/01 IlL ug/L Sample Description: MW-7 TPIt Gasoline 87,960 50 Surrogate Recovery % 101 DL = Detection Limit ~rat°~L~M~ ND - Non-Detect at given DL NA - Result not available age : Drew J. Picard~'~"~---~ I Halcyon Laboratories, :Inc. Laboratory Report Certification # 1 g20 CLIENT E2C'Inc. Project Name: Mr Fast 5640 District Blvd Suite 102 Bakersfield, CA 93313 Matrix: Aqueous Sampled by: Bill Cooper TESTS: TPH Diesel by EPA 8015M TPHd Analysis: 6/12/01 Date of Report: 6/27/01 Units: ug/L Sample #: 2K1-1167 2K1-1168 2K1-1169 2K1-1160 Date Sampled: 6/4/01 , 6/4/01 6/4/01 6/4/01 DL ug/L Sample Description: MW-11R MW-13 MW-14 T-Blank TPH Diesel ND ND ND ND 50 Surrogate Recovery % 109 109 109 109 Sample #: 'Date Sampled: DL ug/L Sample Description: TPH Gasoline 50 Surrogate Recovery % ~Sample #: Date Sampled: DL ug/L Sample Description: TPIt Gasoline 50 Surrogate. Recovery % . DL = Detection Limit ~ ~ ND - Non-Detect at given DL NA - Result not available f Laboratory Man~ger: Drew ~ · Project Number 1801BK04 A~/_oust 15. 2001 I I I I I I ~ APPENDIX K I Site Safety Plan ! ! ! ! ! ! ! ! E~C Remediation, LLC Appendix K ! project Number 1801BK04 August 15. 2001 APPENDIX K Introduction: A Site Safety Plan (SSP) has been designed to address safety provisions needed during the site characterization. Its purpose is to provide established procedures to protect all on-site personnel from direct skin contact, inhalation, or ingestion of potentially hazardous materials that may be encountered at the site. The SSP establishes personnel responsibilities, personal protective equipment standards deContamination procedures, and emergency action plans. E2C, Inc. seeks to enter property described above for the purpose of conducting a site characterization consisting of up to four (4) soil borings to evaluate the extent of soil impaction. Soils samples will be collected at five-foot intervals during exploratory drilling using a California modified split-spoon sampler through a hollow-stem auger. All possible efforts will be made to collect undisturbed samples. Each sample to be chemically analyzed will be collected in a brass sleeve, Capped with lined plastic lids, sealed with tape, and placed on ice in a cooler immediately. All Chain-of-Custody protocol will be followed. Drilling equipment will be brought to the site and operated by a subcontractor: Layne Christensen Company 11001 Etiwanda Avenue Fontana, California 92337 C-57 License Number 51001 The SSP describes means for protecting all on-site personnel from deleterious contamination or personal injury while conducting on-site activities. As described below we will meet all requirements promulgated by the California Department of Health Services. Site Background: Western Environmental Engineers Company (WEECO) performed initial site assessment work in July 1993 after one of the underground tank systems failed routine integrity testing. The assessment consisted of advancing soil borings and collecting soil samples for chemical analyses (boring locations are not known', however they will be ascertained and reported in the forthcoming Summary of Previous Site Assessment and Remedial Work addendum report (SPSARW) that will be issued by January 31,2001). Soil samples contained up to 2,465 parts per million (ppm) of Total Petroleum Hydrocarbons as gasoline (TPHg), 3.158 ppm of benzene, 2.223 ppm of toluene, 1.526 ppm of ethylbenzene, and 9.476 ppm of xylenes (total) (BTEX). Analyses were not preformed for Total Petroleum Hydrocarbons as diesel (TPHd, methyl tertiary butyl ether (MTBE) or other fuel oxygenates, and other volatile organic compounds (VOCs). Based on this data, the City of Bakersfield Fire Department (CBFD) required further assessment to adequately define the extent of soil and groundwater contaminant plumes at the Site. ' E2C Remediation, LLC Appendix K- I I' Project Number 1801BK04 A ~?ust 15. 2001 Responsibilit!es of Key Personnel: All personnel on site will have assigned responsibilities. Mr. Bill Lawson, Senior Geologist of E2C will serve as Project Manager and On-Site Geologist. He will also serve as Site Safety Officer (SSO). As SSO, Mr. Lawson will assure that on-site personnel have received a copy of SSP. Personnel will be required to document their full understanding of the SSP before admission to the site. Compliance with the will be SSP monitored at all times by the SSO. Appropriate personnel will conduct a training session to assure that all are aware of safe work practices. In the training session, personnel will be made aware of hazards at the site and will utilize Material Safety Data Sheets for on compounds information to be encountered.. Mr. Lawson will also be responsible for keeping field notes, collecting and securing samples, and assuring sample integrity by adherence to Chain-of-Custody protocol. On-site employees will take reasonable precautions to avoid unforeseen hazards. After documenting understanding of the SSP, each on-site employee will be responsible for strict adherence to all points contained herein. Any deviation observed will be repoded to the SSO and corrected. On-site employees are held responsible to perform only those tasks for which believe they are qualified. they Provisions of this SSP are mandatory and personnel associated with on-site activities will adhere strictly hereto. Job Hazard Analysis: Hazards likely to be encountered on site include those commonly encountered when operating any mechanical equipment, such as the danger of falling objects or moving machinery. Simple precautions will reduce or eliminate risks associated with operating such equipment. Qualified personnel only will have any contact with this equipment. All on-site personnel, including the drilling contractor and his employees, are required to wear hard hats and steel- toed shoes when in close prOximity to drilling equipment. Latex gloves will be worn by persons collecting or handling samples to prevent exposure to contaminants. Gloves will be changed between samples, and used ones discarded, to avoid cross-contamination. Proper respiratory equipment will be worn if vapor contamination levels on site exceed action levels as determined using a FID. Action levels requiring respiratory apparatus will be 5 ppm, in the breathing space. Furthermore, no on-site smoking, open flame, or sparks will be permitted in order to prevent accidental ignition. EeC Remediation, LLC ,Appendix K-2 Pro_iect Number 1801BK04 August 15. 2001 Risk Assessment Summary: chemicals anticipated on site that may provide exposure include the following: gasoline, and benzene, toluene, and xylenes (BTEX). These chemicals represent a hazard because they are moderately to extremely toxic and most are highly flammable. Threshold Limit Values (TLV's), Short Term Exposure Limits (STEL's), and Toxicity levels (LD50, oral-b'at), all in mg/kg (ppm), are listed below: Compound TLV STEL Toxicity GasOline 200 300 .... Benzene 10 25 4,894 Toluene 100 150 5,000 Ethylbenzene 100 50 3,500 Xylenes 100 200 4,300 Benzene is considered a cancer hazard. Exposure Monitoring Plan: A Hydrogen flame-Ionization Detector (FID)' will be used to monitor vapor concentrations around the site, Should concentrations exceed TLV's, protective measures will be taken. Personal Protective Equipment: Personnel on site will have access to respirators with organic vapor cartridges. Replacement cartridges will be available on site as needed. When handling samples, the on-site geologist will wear latex gloves. All personnel on site when in proximity of drilling and heavy equipment will wear hard hats and steel-toed shoes. Work Zones and Security Measures: Access to the site will be restricted to authorized personnel. A set of cones, placards, or wide 'yellow tape, surrounding the site will define the perimeter. The Project Manager will be responsible for site security. Decontamination Measures: Avoidance of contamination whenever possible is the best method for protection. Common sense dictates that on-site personnel avoid sitting, leaning, or placing equipment on possibly contaminated soil. All personnel will be advised to wash their hands, neck, and face with soap and water before taking a break or leaving the site. Respirators will be washed with soap and water following each day's use. Drilling and sampling equipment used will be decontaminated by steam-cleaning. Sampling equipment will be decontaminated before each sample is taken and drilling equipment will be decontaminated before each boring is commenced. E2C Remediation, LLC Appendix K-3 Prelect Number 1801BK04 A (~o_ ust 15. 2001 General Safe Work Practices: Drillers, heavy equipment operators and other on-site personnel will be each day in bri'efed "tailgate" meetings as to the day's goals' and equipment to be used. Anticipated contaminants and emergency procedures will be reviewed. Appropriate personal protective equipment will be put on and verified correct by SSO, including respirator fit. Drilling and sampling equipment will be steam-cleaned before being brought on site. Split- spoon sampling equipment will be steam-cleaned before use. Augers each will be steam- cleaned between borings.' . The On-Site Geologist will oversee operations and log borings in consultation with drillers. '[he Sample Coordinator will assure that proper protocol is used at all times in collecting and handling samples. Training Requirements: will conduct training session which will include all points of MSDS forms, The SSO a pre-site contaminant properties, warning signs, .health hazard data, risk from exposure, and emergency first aid. The SSO will assure that everyone fully understands site hazards. Medical Surveillance Program: According to CFR 29, 1910.120, Paragraph (f), employees who wear respirators 30 days or more during one year or who have been exposed to hazardous substances or health hazards above established permissible exposure limits are required to be monitored medically. All site personnel will be required to have had a complete chemical physical within the past year. Record Keeping: Documentation will be kept on personnel exposed to contaminant hazards on the job site according to OSHA regulations. These will include documentation that employees received .training on the SSP, respiratory protection, MSDS forms, and all emergency procedures. These will be reviewed during the pre-site training meeting. Exposure records on each job will be kept for 30 years to meet requirements. I'ncluded will be names and social security number of employees, medical evaluation, on-the-job logs from entry to exit, first aid administered, visits on site by outside persons, and personal air monitoring records. ! I E2C Remediation, LLC Appendix K-4 I Project Number 1801BK04 A~l~_ust 15. 2001 I Contingency Plans: I In the event of accident, injury, or other emergency, the Project Director, Senior Project Manager, or other person will notify appropriate government agencies or individuals as follows: City of Bakersfield Fire Department I 1715 Chester Avenue Bakersfield, California 93301 (661) 326-3979 I Contact: Mr. Howard Wines Police, Fire, or Ambulance emergency 911 I . Nearest Emergency Hospital (see Figure E-1 for route): Mercy Hospital I 2215 Truxton Bakersfield, California 93301 (661) 632-5000 I Emergency Numbers for E2C, Inc. personnel: Mr. Bill Lawson, of E2C will serve as Project' Manager and On-Site Geologist. He may be I contacted at the work site by calling following the numbers: Cell Phone: (661) 599-1473 I In case of an emergency, you may .contact Mr. Phil Goalwin, R.G. of E2C at the following numbers: I Office: .(661) 831-6906 Car Phone: (661) 599-1470 : i Home: (661) 587-0585 i E2C Remediation, LLC Appendix K-b I *:'*~ ~ ,' · ~.~ ....... ~~ ~-----~o~. ~. ~ / ~V I '~ -- -- 0 8 S feet , , 9th ~ i ~.~..~/.,~ _ .~ ~--~~~~~ _~__~_~~ ___~ ~ mh, ~',~ I ~~'_ ~ ~ ~ ~ ~ =-~....:~ ~ ~,{;~ E~I / ~ ...... ; ~ ....... I ~ , , ~m 'r" ;~: ...... ~,~4.: ~ CASA I I E2C Remediation, LLC MR. FAST SERVICE STATION FIGURE 600 BRUNDAGE LANE 5300 Woodmere Dr., Suite105 'BAKERSFIELD, CALIFORNIA Bakersfield, California 93313 K-1 I Telephone: (661) 831-6906 HOSPITAL LOCATION MAP Facsimile: (661) 831-6234 I Auaust 15. 2001 ?ro]ect Number 1801BK04 - I I I I I I I ~ APPENDIX L I Air Sparging i Dissolved Oxygen and Groundwater Elevation Data I I I I I ! Appendix i. E¢C Remediation, LLG WELL MW-7 - GW Elevations TOC Elev. Depth GW Elev. 393.63 45.35 348.28 I 5:00 45.50 348.13 5/22/01 11:04 45.30 348.33 5/22/01 3:10 PM 45.26 348.37 I 5/22/01 17:32 45.26 348.37 5/23/01 8:40 45:23 348.40 5'-~23/01 12:18 45.16 348.47 I 5/23/01 45.10 348.53 5/23/01 17:50 45.10 348.53 5/25/01 9:30 45.13 348.50 I 5--/24/01 13:04 45.07 348.56 5/24/01 16:00 45.02 348.61 5/24/01 17:57 45.02 348.61 I 5/25/01 10:33 45.07 348.56 5/25/01 13:08 45.05 . 348.58 i/25/01 15:13 45.02 348.61 I 5/25/01 17:31 45.11 348.52 5/29/01 10:13 44.83 348.80 5/29/01 12:26 44.80 348.83 I 5/29/01 15:37 44.76 348.87 5/29/01 18:09 44.72 348.91 MW-7 - GW Elevations 349.00 348.90 348.80 348,70 348.60 *, GW Elevation 348.50 348.40 348.30 348.20 348.10 348.00 · 0 5 10 15 20 25 Project Number 1801BK04 August 15, 2001 MR. FAST SERVICE STATION 600 Brundage Lane Bakersfield, Ca 93304 Dissolved Depth To Time Oxygen Groundwater cOmments MW-1 Pre- Test 5/21/01 2:00 1.30 42.77 5:00 3.20 42.78 5/22/01 10:40 1.30 42.75 Init Test-1 2:45 0.00 42.70 Init Test'2 5:08 0.00 42.68 Strong petroleum Odor 5/23/01 8:00 1.60 42.68 InitTest-3 Slight Odor 2:44 3.00 42.61 Init Test-5 Slight Odor 5:27 3.20 42.58 Slight Odor 5/24/01 8:55 1.60 42.62 Init Test-6 Slight petroleum Odor 12:56 1.60 ' 42.55 Init Test-7 Slight petroleum Odor 3:58 2.10 42.55 Init Test-8 Slight petroleum Odor 5:49 1.90 42.53 Slight petroleum Odor 5/25/01 10:23 1.80 42.59 · Init Test-9 )etroleum Odor 1:04 1.80 42.55 Init Test-10 Moderate Odor 3:05 4.70 42.50 Init Test-11 3etroleum Odor 5:28 2.80 42.53 Slight petroleum Odor 5/29/01 10:04 2.30 42.37 Init Test-12 Strong petroleum Odor 12:22 1.60 42.35 Init Test-13 Strong petroleum Odor 6:00 2.00 42.30 Strong petroleum Odor ! ! Appendix L-1 i E2C Remediation, LLC Project Number 1801BK04 August 15, 2001 ' MR. FAST SERVICE STATION 600 Brundage Lane Bakersfield, Ca 93304 Dissolved Depth To Time OxYgen Groundwater Comments MW-2 Well not on' map Pre-Te§t found on 5/23/01 5/23/01 8:50 8.20 42.32 Init Test-3 11:51 6.40 42.30 Init Test-4 2:39 6.20 42.30 Init Test-5 5:25 6.30 42.28 5/24/01 8:50 6.40 - 42.25 Init Test-6 12:35 8.60 42.23' Init Test-7 3:20 4.80 42.22 Init Test-8 5:32 5.40 42.22 5/25/01 10:03 3.40 42.22 Init Test-9 7.00 42.20 Init Test-10 2:39 2:46 3.60 42.20 Init Test-11 5:00 7.00 42.18 5/29/01 9:30 6.90 42.05 Init Test-12 12:04 0.00 42.00 Init Test-13 DO meter Malfunction 3:12 10.20 42.00 Init Test-14 ! E2C Remediation, LLC Appendix L-2 · Project Number 1801BK04 August 15, 2001, MR. FAST sERVICE STATION 600 Brundage Lane Bakersfield, Ca 93304 Dissolved Depth To Time Oxygen Groundwater Comments MW-3 Pre-Test 5/21/01 7:00 7.80 43.50 Anomalous measurement 5:00' 1.80 43.50 5/22/01 10:48 0.60 43.47 ·Initial Test 1 2:53 1.20 43.43 Initial Test 2 5:16 1.60 43.42 5/23/01i 8:08 2.20 43.39 Initial Test 3 43.35 Initial Test 4 12:01 3.80 2:53 3.40 43.34 Initial Test 5 5:33 4.80 43.34 3,90 43.30 Initial Test 6 5/24/01 9:00 12:43 2.50 43.28 Initial Test 7 3:30 7.60 43.26 Initial Test 8 5:39 5.50 43.26 5/25/01 10:11 3.70 43.26 Initial Test 9 12:48 4.80 43.24 Initial Test 10 2:53 3.80 43.25 Initial Test 11 5:13 5.20 43.23 5/29/01 9:40 2.70 43.04 Initial Test 12 12:10 0.00' 43.02 Initial Test 13 3:18 2.60 42.98 Initial Test 14 5:50 4.00 42.97 · Appendix L-3 i i E2C Remediationl LLC I Project Number 1801BK04 August 15, 2001 I MR, FAST SERVICE STATION 600 Brundage Lane Bakersfield, Ca 9'3304 I DissolVed Depth To . Time Oxygen Groundwater Comments i MW-4 i, I ~re-Test 5/21/01 1.50 43.71 5:00 2.80 43.67 5/22/01 10:56 0.20 43.68 init test 1 Slight odor I 2:58 0.00 43.63 initial Test 2 Very Slight Odor 5:20 7.40 43.60 No odor 5/23/01 8:13 6.40 43.63 initial Test 3 qo odor I 12:10 6.20 43.57 Initial Test 4 qo odor 2:57 6.70 43.54 Initial Test 5 ,No odor 5:35 8.40 43.49 No odor I 5/24/01 9:10 4.40 43.57 Initial Test 6 12:52 7.20 43.48 Initial Test 7 3:40 5.80 .43.47 Initial Test 8 I 5:46 5.40 43.43 5/25/01 10:20 4.20 43.55 Initial Test 9 12:55 4.00 43.47 Initial Test 10 i 3:00 7.00 43.45 Initial Test 11 .~ 5:19 7.80 43.47 5/29/01 9:55 2,40 43.32 Initial Test 12 12:16 0.30 43.30 Initial Test 13 I 3:29 5.50 43.29 Initial Test 14 5:58 5.60 43.26 , I I I I I E2C Remediation, LLC Appendix L-4 ' Project Number 1801BK04 .. August 15, 2001 MR. FAST SERVICE.STATION 600 Brundage Lane Bakersfield, Ca 93304 Dissolved Depth To Time Oxygen Groundwater Comments MW-5 Pre-Test 5/21/01 2:00 7.00 44.72 5:00 6.40 44.68 5/22/01 11:00 4.10 44.67 Initial Test 1 3:02 3.10 44.60 Initial Test 2 5:23 5.70 44.53 5/23/01 8:25 6.40 44.59 Initial Test 3 12:06 6.30 44.51 Initial Test 4 3:02 5~90 44.43 Initial Test 5 5:40 6.70 44.39 5/24/01 9:15 5.40 44.51 Initial Test 6 12:48 6.00 44.40 Initial Test 7 3:47 6.20 44.31 Initial Test 8 5.42 6.30 44.29 5/25/01 10:15 4.50 44.48 Initial Test 9 12:51 6.20 44.43 Initial Test 10 2:56 6.10 44.36 Initial Test 11 5:16 9.10 44.33 5/29/01 9:50 3.80 44.28 Initial Test 12 12:13 0.50 44.23 Initial Test 13DO meter Malfunction 3.23 6.40 44.15 Initial Test 14 5:54 7.80 44.15 ! E2~ Remediation, LLC Appendix L-5 I . I Project Number 1801BK04 August 15, 2001 I MR. FAST SERVICE STATION 600 Brundage Lane Bakersfield, Ca 93304 I Dissolved Depth To Time Oxygen Groundwater Comments I MW-6 =re-Test I 5/21/01 2:08 1.40 41.95 5:00 7.20 41.95 5/22/01 10:45 7.00 41.90 Initial Test 1 I 2:49 6.00 41.84 Initial Test 2 5:12 5.80 41.86 5/23/01 8:04 8.20 41.85 Initial Test 3 I 11:57 7.20 41.81 Initial Test 4 2:49 7.'50 41.78 Initial Test 5 5:30 8.20 41.78 · 5/24/01 9:04 5.60 41.75 Initial Test 6 12:40 7.00 41.22 Initial Test 7 3:26 3.20 41.70 Initial Test 8 I 5:35 5.60 41.70 5/25/01 10:06 3.00 41.71 Initial Test 9 12:45 6.20 41.68 Initial Test 10 2:49 2.80 41.68 Initial Test 11 I 5:10 5.60 41.68 5/29/01 9:35 3.50 41.47 Initial Test 12 12:08 0.00 41.45 Initial Test 13DO Meter Malfunction I 3:14 10.40 41.42 Initial Test 14 5:45 12.50 41.43 I ! E2C Remediation, LLC Appendix L-6 I Project Number 1801BK04 August 15, 2001 MR. FAST SERVICE STATION 600 Brundage Lane · ~ Bakersfield, Ca 93304 Dissolved Depth To Time Oxygen Groundwater Comments MW-7 . Pre-Test 5/21/01 1.60 45.35 Sheen 5:00 1.60 45.50 5/22/01 11:04 0.00 45.30 Initial Test 1Sheen with odor 3:10 0.00 45.26 Initial Test 2 5:32 0.08 45.26 Very slight odor 5/23/01 8:40 1.70 45.23 Initial Test 3Sheen 12:18 2.30 .45.16 Initial Test 4Sheen 3:11 2.40 45.10 Initial Test 5Sheen 5:50 2.40 45.10 Sheen 5/24/01 9:30 1.20 45.13 Initial Test 6Sheen, gas odor 1:04 1.40 45.07 Initial Test 7Sheen, gas odor 4:00 2.20 45.02 Initial Test 8Sheen 5:57 1.50 45.02 Strong gas oder 5/25/01 10:33 1.40 45.07 Initial Test 9Sheen, strong odor 1:08 1.80 45.05 Initial Test 10 Sheen 3:13 2.00 45.02 nitial Test 11Sheen 5:31 2.20 45.11 Sheen, strong odor 5/29/01 10:13 1.40 44.83 Initial Test 12 Sheen, strong odor 12:26 0.80 44.80 Initial Test 13 Sheen, strong odor 3:37 1.30 44.76 Initial Test 14 Sheen, strong odor 6:09 1.20 44.72 Sheen, strong odor ! Appendix L-7 E2C Remediation, LLC I Project Number 1801BK04 ~ August 15, 2001 I MR. FAST SERVICE STATION 600 Brundage Lane Bakersfield, Ca 93304 Dissolved Depth To Time Oxygen Groundwater Comments I MW~8 Pre-Test I 5/21/01 2: 20 44. 05 ~ 5:00 1.60 43.94 5/22/01 10:53 0.60 44.02 Initial Test 1 I 3:05. 1.00 43.95 Initial Test 2 5:27 0.80 43.90 5/23/01~ 8:32 2.80 43.95 Initial Test 3Slight odor I 12:14 5.60 43.89 Initial Test 4 3:06 3.50 43.85 Initial Test 5No oder 5:44 5.00 43.82 I 5/24/01 9:25 2.70 43.87 Initial Test 6 1:00 3.90 43,78 Initial Test 7No oder 3:50 6.60 43,77 Initial Test 8Slight odor I 5:54 6.50 43.75 Slight odor 5/25/01 10:29 2.20 43.83 Initial Test 9Slight odor 1:00 4.20 44.76 Initial Test 10 Slight odor I 3:09 6.40 43.75 Initial Test 11 No odor 5:22 4.50 43.75 Slight odor 5/29/01 9:59 1.80 43.62 Initial Test 12 Slight oder 12:19 0.50 43.57 Initial Test 13 DO Meter Malfunction I 3:26 4.80 43.56 Initial Test 14 ~Slight odor 6:01 3.70 43.53 Slight odor 1 ! ! .~ E2C Remediation, LLC Appendix L-8 I Prqiect Number 1801B~0,7 Aucust 15, 2001' ! ! ! ! ! ! ! ~ APPENDIX M I SVE/AS Observation Field Data Sheets ! ! ! ! ! ! ! ! _ E2C Remediation, LLC Appendix M ! I ~7~'P~' / Table 4 SVE Pilot Test Data Sampling Sheet """ Busy Bee I Bate: ~-~--o / " I Ex.action Well: Obse~ation Well.: ~5-~~ ~5- ~ I I w~. [ ~ I ~~~. I~" ~' ~ I ~=' I ~ ' D~ch~¢ I V~ [ Unit E n 0 ~. i p i ; (2) ~ (ppm) 3 1~3 m / ~¢?~ ~ m /, ~ 70' m /3q3 '~ m /y~¢ 2o m 2.000 Notes: - I 1. Vacuum p~ssu~ Readin~ at obs~ation walls protest ~d ~ possible during minutes 10 to 20. Readings ~m minutes would be ~ ~ible to co~s~nd to ~adin~ ~'~n at ~e ~xmction well. Acm~ fim~ would be noted for each obs,~ion 2. Ak Flow roms ~d FID me~u~menm ~ ~s,ible in conjunction wi~ ~xmcdon wall monitoring 1 I : ' Table 4 (Cont.) SVE Pilot Test Data Sampling Sheet I Busy Bee Date: ~- 22- ~ ) I I Observation Well: /Otv~.! j~ 5~ /o.~ ~ FID ~' I [ Well. Tn:ama'~nt I M°mt°ring Press. Unit (ppm! I Interval ~ell I Time I I tminutes) pretest Readin! 30 I lqo3 4o I /3~3 60 90 I 120 150 I 240 i 300 400 500 I 1,000 1.500 I 2.000 I Notes: 1. Vacuum pressure Readings al observation wells pretest and as possible during minutes 10 to'20. Readings fram minutes 20 to 2.000 would be as possible to correspond to readings token at thc extraction well Actual time would be noted for each observation well. i 2. Air Flow rates and FID measurements as possible in conjuncdon with extraction well monitoring interval. Table 4 SVE' Pilot Test Data Sampling Sheet Busy Bee Obsemation Well: - ~ ~acoon Air Flow FID Well Vac. Vac. Vac. Vac. Vac. Vac.' V~. Monitoring P~ss. p~. p~. ~. P~ss. P~s. ~. lnte~ Ex~tion Obs. W~ll ~ell Obs. Well Obs. Well Obs. Well Obs. Well Blower To~ Tma~ent ' ' (2) ~pm) (ppm) (minu~s) P ~t) p t P t P t P t P t P · Pre.st R:ading 3 Notes: I. Vacuum Pms~u~ Readin~ at obsewation w~lls pRJ~Sl ~d ~ possible during minutes 10 to ]0. Readings ~om minutes 20 ~ 2.000 would ~ ~ ~ible to eo~s~nd to ~adin~ ~n at ~e ex.etlon ~eJJ. Acm~ time would be .oJ~d for ~ach obsew~ion well. 2. Ak Flow n~s ~d FID m¢~u~men~ ~ ~ssibl¢ in conjunction wi~ ex.cOon well mo~ilofin~ Table 4 (Cont.)· ' ., SVE Pilot Test Data Sampling Sheet Busy Bee ~'q.' 05) /~- Z ~ $ - 3 ft Obse~ation Welk ~'.3 Ex~ction Well Vac. Vac. Vac. V~. Vac. Vac. Vac. Air Flow FID p~. P~ss. P~s. p~. ~ Me~. FID ~' Obs. Monitoring Press. P~ss. ~:~ll Well Obs. W,II Obs. Well Ohs-Well Blower To~l T~a~ent lnte~ Ex~cdon Obs. Well · Time Well ~4~' ~_ Disch~ge V~s Unit imbues) p ~' p t p t p t p t p t p (2) (ppm) (ppm~ Prem~t [~ading 300 400 500 1.000 1.500 2.000 ' Notes: 1. Vacuum Procure Reading~ ~ ob~emafion well~ pmte*t ~d ~ po**ible during minum* 10 to 20. Re,din~ ~m minutes 20 to 2.000 would be ~ ~$ible m com~nd m madin~ ~en at ~e exmclion well Actor time would ~ noted for each obse~afion well. 2. Air Flow rotes ~d FID me~ummenu ~ ~,ible in conjunction wi~ exmction well monitoring luminal. / g / q I SVE Pilot Test Data Sampling Sheet I Obse~ation Well: Ex.action Air Flow FID I Well Vac. Vac. Vac. Vac. Vac. Vac. V~. Ime~ Ex~fion Obs. Wall Obs. W{II ~ Obs. Well Obs. W~tl Obs. W~II Blower To~ T~ament I I Notes: - I. Vacuum ?r~ssur~ Readin~ at observation wells protest and as possible during minutts 10 lo 20. Readings from minutes 20 to 2.000 would be as possible to contSpond to rtadin~ lak'¢n at the exu-action well. Actual time would be noted ['or each observation well. 2. Ah' Flow mrs and FID measurtmenu as possible in conjunction with exu'aetion well monitoring interval. I i I '1 ~s"F- ~ Table 4 · SVE Pilot Test Data Sampling Sheet i Busy Bee A 5 - 2- ,q ¢ -3 /~ $- t Date: I Ex.action Well: I Obse~ation Well: Ex,action V~. Air Flow FID Well Vac. Vac. Vac. Vac. Vac. Vac. ~¢ ~- ~ Monitoring Pm~*. P~. P~. ~. pm~. ?m~. ~ ¢ lntc~ Ex,action Ob~. Well Ob~. Well Ob~. ~11 Ob~. Wcll 0~. Well Ob,. Well Blower To~ Tin,merit (minuusl p ~u p t p t p ~ ~ p t p (2) ~pm) (ppm) ~ Prcmst Reading / / q , /~o~ I Not:~: _ · 1. Vacuum P~ Rcadin~ at ob~c~adon w:ll~ pmtc~t ~d ~ possible dudng m}nutc$ ~0 to 20. Readln~ ~om minutc~ 20 m 2.000 would be ~ ~ib[c ~o co~nd ~ ~din~ ~':n ~ ~ ex~ction well Acm~ time would be noted for c:ch ob~c~ion well. i 2. Ak Flow mt~ ~d FID mc~u~m:nB ~ ~$$ib1: in conjunction wi~ cx~cdoo well monitonng ~tc~. I Table 4 SVE Pilot Test Data Sampling Sheet Busy Bee . Date: q /o Ex.action Well: ~ W'- / Obse~ation Well: Ex.action Well Vac. Vac. Vac. Vac. Vac. Vac. V~. Air Flow FID Monitoring P~s. Pm~. P~. ~. P~ss. P~s. Inte~ Exw~tion Obs. Well Obs. Well Obs. Well Obs. Well O~s. Well Obs. Well Blower To~ Tma~ent (minums) p ¢~ p. t p t p t .p t p t p {2) ~pm) (ppm) Premst Reading 2.o iF 2d I .Notes: 1. V.',cuum Pressure Reading at observation wells pr::cst and as possible during minutes 10 to 20. Readings from mi'nutes 20 to 2.000 would be a~ possible to correspond to rc.-,din~ ~Jcen at Lhe e.x~zaction well..Actual time would be noted for each observation well. I 2. Air Flow rates and FID measurements as possible in conjunction with exa-action well monitoring interval. SVE Pilot Test Data Sampling I Busy Bee 'l Ex.action Well: Y~-- / ~ 'Obse~ation Well: Well Vac. Vac. Vac. Vac. Vac. Vac. V~. Air Flow FID Moni~fing P~s. p~. p~. ~. P~ss. P~s. ~.' ln,C~T~c Ex~tiOnWell 0~. Obs. Well~ Obs WeII~.,~ Obs. Well O~s. Well__ Obs. W,ll D~ch~,Bl°wcr v~sT°~ T~a~Cntuni, (minu~s) p ~ p t p t p t p ~ p ~ p (2) ~pm) (ppm) Prc~st Reading ~o >~ ~ z,o~ ~.o !In z'~ ~ ~ ~1~:,;~,-, o.o /~.. ~ '~ ,: ~ ~o i.~l ~ ~~ r/,~, 18 I :o I I Notes: 1. Vacuum pressure Reading at observation wells prttcst and as possible during minutes 10 to 20. Readings from minutes 20 to 2.000 would be as pos.siblc to correspond to rtading~ taY,,'n at the extraction well. Actual time would be noted for each observation well. I 2. Air Flow ra~:s and FID mcasummcnt~ as possible in conjunction with ex:faction well monitoring interval. SVE Pilot Test Data Sampling Sheet Busy Bee A~'2 ~-~ ^~.., Date: '~4-- ~ Z"' ~ Ex.action Wall: ~/ V/~ ~ ~ i Z Obsemation Well: Ex.action Well Vac. Vac. Vac. Vac. Vac. Vac. Vg. Air Flow FID Monitoring Pros. pmk. pmk. ~. Pmk. P~s. lntcmfl Ex7~tion Obs. Well Obs. Well Obs..~ll O~ Well O~s. Well Obs. Well Blower To~ T~a~ent T~ w~. ~-/ ~W-) Vf-~ . (minu~s) p ~o p t p t p t p t p t p (2) ~pm} (ppm) Prmst Reading i~ ~ z~o~ '~,~ !,~ 1.5- /~ ~ ~ ~,l /.~ i.~ ~ I~/,~,~ ~o 1.~ ,o 18 I I. Vacuum Prtssure Readin~ at observation wells pretest and as possible during minutes 10 to 20. Readings bom minutes 20 to Notes: 2.000 would be a5 possible to correspond [o readin~ t~en at thc ex.action well. Actual time would be noted for each obscrvmion well. 2. Air Flow rates and FID mcasuremcn~ as possible in conjunction with cxmaction well monitoring interval. I SVE Pilot Test Data Sampling Sheet - Busy Bee Ex.action FID Wcl[ Vac. Vac. Vac. V~c. Vac. Vac. V~. Air Flow In[=~ Ex~fion Obs. Wg[l Obs. Wall Obs. Wall Obs. Wall O~s. Wc[I Obs. Wall Blower To~ (minu~s). p p t p t p t p ~ [ p (2) ~pm) (ppm) ~' Pre.st Reading Not~s: "7~J' "-' r~ Table SVE Pilot Test Data Sampling Sheet Busy Bee Extraction Well:' ObserVation Well: Extraction Well Vac. Vac. Vac. Vac. Vac. VaC. Va~. Air Flow FID Monitoring Pr~s. Int~ Ex~tion Obs. Well O~ We~ Obs. Well Obs. Well Obs. Well Obs. Well Blower To~ Txa~cnt ~ ~ ~ ~ ' D~ch~: V~s Unit (minu~s) P Pre~it Reading Notes: I. Vacuum P~ssu= Readin~ at obse~ation wells p=rest ~d ~ possible during minutes I0 to 20. Readings ~m minutes 20 t would be ~ ~ible to co~nd to gadin~ ~':n at ~e ex~ction well. Acm~ time would be noted for each obse~=ior 2. A~ Flow ~ ~d FID me=u~mcn~ ~ ~ssible in conjunction wi~ ex~ction welt momto~ng Nte~. 'l' SVE Pilot Test Data Sampling Sheet i .Busy Bee Date: -~--:2'5~'"C ! Obse~ation Well: Excretion ~cll V~c. Vac. V~c. Vac. Vac, Vat, V~. Ai~ Flow FiD T~e Wdl ~ ~ ' ~ D~ch~e V~s Unit (minu~sl P ~m} p t p t p t p t ~ t ~ (2) ~pm) (ppm) I Prc~s~ Reading '" .1~o I~ . _ .... ,, t i i t I ~ _:o I , I I I I I I I I I' I I. Vacuum Pressure Readin~ at observalion walls pr:test and a~ possible during minutes 10 lo 20. R~adings ~m minutes 20 ~ 2.000 would bc ~ ~ible to co~nd ~o ~adin~ ~':n at ~e exmction ~ell. Acm~ time would be noted for each obsession 2. Ak Flow m~ ~d FID me~ummenu ~ ~ssible in conjunction wi~ ~x~cfion well momtodng ~. I I i '~3'/~ '// Table 4 ' SVE Pilot Test Data Sampling Sheet . Busy Bee Date: ~'-- ;g ~-- ° ~ Extraction Well: /~\ CU.- .... Obs~afion Well: ~/~-/ ~ , Ex.action Air Flow FID Well Vac. Vac. Vac. Vac. Vac. : Vac. V~. '. ~ ~.~ ~ ' D~ch~ V~s Unit (minumsl P P Preust Reading . 3 _ No~:s: t. Vacuum P~ilum R~adin~ 3t obsc~afion w~lls p~:~st ~d ~ possible during mlnmcs 10 to 20. R~din~s ~m minm=S 20 m 2.000 would be ~ ~ibl¢ to toss.nd to xadin~ ~':n at ~c exmction well. Actual time would be noted for ¢3ch obs¢~aion well. 2. Ak Flow mai ~d FID m¢~uxmena ~ ~ssibl¢ in conjunction wi~ exmcfion well monttoNn~ ~t¢~.. SVE Pilot Test Data Sampling Sheet Busy Bee I Obse~ation Well: ~[-~ rO~ Pre.st Reading IGq5 ~ O, IHo~ ~ Z~o + 18 - · ~m minmcS 20 m 2.000 I Notes: ' 1. Vacuum P~ssu~ Rcadin~ ~ obse~afion wctls prat:st ~d ~ possible dutng minutes 10 would bc ~ ~iblc [o core.nd to m:din~ ~':n at ~c cxmCtiOn ~cll. Actual time woutd bc notcd for each obsession well. 2. A~ Flow m~s ~d FID mc~u~mcn~ ~ ~ssibl: in conjunction wi~ cx~cfion well mtmmdng Table 4 '~<~f"- '~/~ SVE Pilot Test Data Sampling Sheet Busy Bee As-z As Ex.action Well: M~-t I ~;~- ~ ~- ~'~ ~ ~ ~ Ex.action Vac. Vac. Air Flow FID Well Vac. Vac. Vac: Vac. ~. I ~g btonitofin~ P~s. P~. P~' ~' Pgss. P~s. lnt:~M Ex;~tion Obs. Wdl Obs. Well Obs. Well Obs. Well Obs. Well Obs. W;II I Blower pre.st Reading O 2 3 ~66 '~ R=adln~s ~m minutes 10 m 2.000 Not:s: t. Va:uum p~ssum Readin~ at obse~adon ~ells pm:est =d ~ possibl= during minutes 10 to 20 . would be ~ ~ible ~o co~S~nd to =adin~ ~':n at ~e ex~cfion ~ell. Actual time would be noted for each obse~=ion ~ell. 2. A~ Flow nt:s ~d FID me~ummen~ ~ ~ssible in conjun:don wi~ ex.:don well momtOfing i SVE Pilot Test Data Sampling Sheet I Busy Bee I Obse~ation ~Vell:~- I Vac. Vac. Vac. Vac. FID I I MonitoNng { p~[. Pm~. Pm~. ~- Press. · Obs. Well Obs. Well Obs. Well Obs. Well Obs. Well Unit I Im:~ I~.~~ti°~ ~m.~t- ~ (ppm) Pre.st Reading 3 6 260 ~ 0 .q 0 ' 9 ~/Iz~ · ..---~ ~: ~* t0o~ I ~m minm:s 20 m 2.000 I Not:s: ' 1. Vacuum pmssu~ R~adin~ ~t obsem~fon ~lli ~::st ~ ~ ~osiibl~ ~ufin~ minutes would bc ~ ~ible to co~s~nd lo madin~ mi'ca at ~c cxmction well. Acm~ time would bc noted for each obsc~aion wall. i 2. Ak Flow a~ ~d FID mcmuxm~nB ~ ~ssible in conjunction wi~ exmcfion well momtofing I I prqiect Number 1801BK04 Aucust 15. 2001 ! ! ! ! ! ! ~ APPENDIX N I SVE Radius of Influence CalCulations I I I I I I I I I EzC Remediation, LLC ,Appendix N Radius of Influence Calculation - 1 Well On; 3 Wells Off Test 2 Extraction Well: VE-3 VE-3 MW-8 MW-1 VE-1 27 2.7 1.6 1.2 27 2.7 1.6 1.2 10 2.2 1.6 1.2 27 2.6 1.5 1 Average VP 22.8 2.6 '1.6 1.2 Distance to E-Well (feet) 0 9 54 75 Test 2 - Radius of Influence 26.0 21.0 ~ . ~ 16.0 P ~ Vacuum Pressure E 6.0 0 20 40 60 80 100 120 Distance from Extraction Well (feet) Radius of Influence Calculation - 2 Wells On, 2 Wells Off Test 9 Extraction Wells: VE-3 & MW-8 VE-3 &MW-8 MW-1 VE-1 2.4 1.9 Average VP 38.5 2.4 1.9 'Distance to E-Well (feet) 0 49.5 71 Test 9 - Radius of Influence 41.0 36.0 · . .' '. ' . 31.0 26.0 .e · Vacuum Pressure n 21.0 E ~ 16.0 11.0 i .. 6.0 1.0 0 20 40 60 80 100 120 Distance from Exiraction Well (feet) ' Radius of Influence Calculation - 3 Wells On, I Well Off I Test 12 i Extraction Wells: MW-l, MW-8 & VE-1 MW-1/VE-1/MW-8 VE-3 22 26 2.7 Average VP 26.0 2.7 I Distance to E-Well (feet) 0 54 0 75 I 0 67 0.0 67.0 I Test 9 - Radius of Influence I 31.0 ..... : 26.0 21.0 · Vacuum Pressure 16.0 11.0 6.0 , 1.0 , , ' ' ' 0.0 20.0 40.0 60.0 80.0 100.0 120.0 Distance from Extraction Well (feet) I Prqiect Number 1801BK04 ' A ~/oust 15:2001 APPENDIX 0 SVE/AS Pilot Test Influence/Effluent Analytical Laboratory Reports i E~C Remediation, LLC Appendix .Atmospheric Analysis & Consulting Chain of Custody ForTh - Analysis Requested.' Sample Matrix· Cllenl Name: E2C, In¢ 661.831.6906' fax 661.831.6234 ProieclName: /'~ ~~ ~ AqueOus Client Address: 5640 Distri~ Blvd., Suite 102. Ba~emfie~d, CA 93313 ~ Soil ' Name: Comments Sample Date S~mple ~ime Sample Description and Container Type ~.~7 --------------' Standard _ ~ 5-Day -------' Turnaround Time Requested: 24 Hour _,..___.. 48 Hour ~ ~----- ., "~linquished By: . Date: C ~ Date: Received ~Y: - e eWed By: -.--------- ~ AtmOspheric Analysis & _Consulting, inc. ~~alysis Rep°r~ Client: ': E2C SamplingDate :05/22/01 Project No. : 300-02-2t;92 Receiving.Date :'05/24/01 Matr~ : MR ~alysbDate '.: Units : ppmv ,~po~Date : 06/04101 EPA Method 18 :::::~:~:~::~:~::: ........ ...., Infiuen~ T~I 1 21441-2 0.4 3.9 ~ 0~ 0.7 38 ~ 607 -E~uent Test 1 21411-3 0.4 0.8 Influent Test 2 21'441~ 0.4 2 ND ND I I 534 Eastman Avenue · SuiteA · Ventura, California 93003 (~ (805) 650-1642 ', FAX (805) 650-1644 .... ~";"; .;'::'?~;":""~'C~"~ f"~'~'"':""": ';: ..... ""' ' "" """ ': I ~ AtmoSpheric Analysis & Consulting, inc. I I ~ualiU Contro~Q~li~ Assurance I DATE ~ALYZED : 05/31/01 ~NT ~ : DAT~ ~POR~D i 06/05/01 AAC ~ : 21501;3 ~TS : ppmv ~~ :. GAS EPA 18 Duplicate jnalyzis Sample Sample Duph~ ~Y~ 2 2 17- C~ ~ ~ 11 ~ 11 ~ ~ 0. 2~ ~ 59 60 1.7 ~ ~ ~ - 20.1 I ~ 2,. ~ 637 779 ~e~ident I 1534 Eastman Avenue · Suite A · Ventura, California 93003 {805) 650-1642 FAX (~505} 650-1644 Atmospheric Analysis & ConsUlting Chain of Custocly t--otto lested sample Matdx Nan~e: E2C, Inc 661.831.6906 ' fax 661.831.6234 E~ . Aqueous ent Ad(tress: 5640 District ~tvd., Suite ·102. Bakcml~eld, CA 93313 Gas Proied Manager: comments samCer Name: Sample Date Sample ~me sample Description and Container TyPe -'---'---- 48 Hour .____. e Requested: 24 Hour - -- . - Atmospheric Analysis & Consulting, Inc. LABORATORY ANALYSIS REPORT CLIENT: · E2C, ln~-. SAMPLING DATE : 5/2312001 tn RECEIVING DATE : 5/2512001 · pRO.IECT NO.: 300-02-2693 ANALYSIS DATE : 5/2512001 MATRIX : AIR REPORT DATE : 512912001 -u UNITS : PPMV r- ~145!-1' 1.5 ND bid .lqD 3.7 --Influe~;~'~'4-' "21451-2 2.4 .... ND .... ~D .... ~.3 Sa ~0 n~S 1.9 ...... ~ID ND" ND ND 0.38 16 Emuent Tes~ 4 ~i'~'f-Y- -' ND ''ND 17 82 455 . lnfluent Test 5 21451-4 2.6 ND R=Replicate · r. Sueha Parmk( -~,/ · · ~P'resident ~" 1534 Eastman Avenue · Suite A · ventura, California 93003 (~ (805) 650-]642 · FAX (805] 650-1644 JUM O? 2001 IO:S1RM HP LFtSERJET 3~00 ~'~ I ~ Atmospheric Analysis & Consulting, Inc. -' I CLIENT: : E2C,.Inc. PROJECT ~ER: : I S~L~G DA~: : 5/23~1 ~E~G DA~: : 5125~001 I DATE: :* 5t25~091 ~PORT DAT~: : ~ucnt Te~ 3 21451-1 I~uent Test 5 21451-4 I' ~uent ~e~ 5 21451-4D I R=RepHcate " I President 1 I I 1534 [a~tman Ave. ue · SuiteA'o Ventu~a, CalifomiaO3003 ~ {80~D 650-1642 · ~ (SO5) 650-1644 Atmospheric Analysis & Consulting Chain of Custody Form , Client Name: E2C, lac 661.831.6908 fax 66'1.B'31.6234 Analysis Requested Sample Matrix Client Address: 5640 District Blvd., Suite 102. Bakersfield. CA 93313 ~ ~ m ~ o O Project Manager: .~ ~ ~ ~ Sampler Name: ~ ~ SamCe Dale Sample Time Sample Description and Conlain~r Type ~ Comments . ~urn;round Time Requested: 24 Hour_ , 48 Hour __ 5-Day _ _. Standard. ,/'~-~ ..-- ¥~el¢~uis~ed b Date: i-~ Relinquished By: Date: [ aeceiVed¢~:/ '~ :- Date: Received By: Dale: SUM O? 2001 lO:52RM HP LRSERJET 3EO0 ~~ Atmospheric Analysis & Consulting, Inc. I ' Laboratory Analysis Report I CLIENT: : E2C, Inc. I pRO/ECT NO. : 300-02-2698 MATRIX : OAS UNITS : % Influent Test 6 21491-1 I In fluent Test------~ 21491-2 ND m Effluent Test ? 21491-3 · Influent Te~ § 21491-4 ND .. I Inlet Ran 3 I ./,[~. Sucha Parma, Pres~,~fi I I 1534Ea~wnan^~enue * Suite^ . VentUra, Califomia93003 {~ (805} 6S0-1642 · FAX (1305) I .]UM 05' 2001 IO:S2AM' HP LFiSEROET 3200 I i~ Atmospheric Analysis & Consulting, Inc. .,. I Laboratory Analysis ~e~oorl I Client: : E2C Sampiiag Da~ : 05/24/01 Projec~ No. : 300-02-2~95 Ree~e~ng Dale : 05/29/01 MaI~4x · : AIR Amalysis Da~¢ : 05/30/0! I Un~/s - : ppmv Repor~Dafe : 0~/06/01 EPA Method i ~,ffiu~t T~t 7 21491-3 0.4 1 ND ~fluen~ T~t 8 21491~ 0.4 ~ ~ ~ ~ 11 18 35 I ~residcnt I I 15341:astman Avenue ' SuiteA · Ventur~Calitornia93003 ~ (805) 6S0-1642 · FAX (805) 650-1644 I I JUN 07 200! ln:SSFIM HP LFISER..IET .3200 Atmospheric Analysis & Consulting, Inc. I Quality Control/Quality Assurance-Report I · : Te~t 11 Influ¢~t DATE-a~NALYZ'ED : 05/31/01 LAB ID : 21501-3 DA~E REI'ORTED : I)6/~510! : Air lYl~r S : I - Duplie. ate Au~! s~y~._~_.~=~= ~,. ~ · Sampl~ $_~mple Duplicate [ __ · '. Anal..v.qis Anal ' ~ 00 ~ ,, oo ~ I o.o i L~- ~ ~ ;;~ 124 10, 113 I 4.5 m,LCS ~ ~ ~ C1 ppmv .~ 100 103 103 ~ 100 115 115 ! C2 ppmv ~ ._____-- · ~ 100 104 104 C3 ppmv ~ ~ ---------- ~ 10o 102 102 i C4 ppmv ~======~ ._.__---- ~ 10o 101 10I C5 Pi~mv ~ ---------- ~ ~ 102 C$ ~ lOO ! I' 1534 EastrnanAvenue ' SuiteA o.Ventura, Californiag3003 (8(15) 650-1642 FAX (805) 650-1'644 I JUM O? ~001 10:51F~M HP LSSERJET 3200 P-~ ~ ~ AtmosPheric Analysis & Consulting, inc. I I Quality Co~troFO_uality/lssura~c~ Report CLIENT ID : DATlg ANALYZED : 05/31/01 AAC ID : 21~-~q)1.3 DAT~ REPORTED : 0(:ff0~/01 MATRIX : GAS UNITS : ppmv I EPA 18 D:iplicate A ~alysis I Saml~ie '" Sample Duplicate AN.4.LYTE Analysis Analysis %P~D I C~ ........ 2 2 17 C4 · '11 11 0.0 Cs I Cs 59 60 1.7 C6+ 779 637 20.1 ! I I I 1534 Eastman Avenue · 5uiteA * Ventura, Califomia93003 {~ (8053 650-1642 · FAX (805) 650-1644 I · -,,,,,,.,o~,,,~,,,- ~,J,~,y~s ~, ~.onsult~ng Chain of Custody Form Client Name: E2C, Inc 661.831.6986 fax 661.831.0234 Analysls Requested ..... Sample Maim Cllenl Address: 5640 District Blvd., Suile 102. Bakersfield, CA 933'13 ~' '~0 u) "O [~ Aqtieou-~ Project Managen ~'~,c ~ 5~ ~ ~ ~ ~ So~I Sample Date' Sample Time Sample Description and Container Type ~ ~ ~ ~ ~ Comments 3UH O? ~001 lO:55FlM HP LFtSER3ET 3200 Atmospheric Analysis & Consulting, Inc. Laboratory Analysis Report Clien~ : E2C Sampling Date : 5125101 Proj~t No. : 300-02-2699 Rec~ivflag Date : 5130101 Matrix : AIR Analysis Date : 5/30101 Units :. % Report Date : 616/01 I Modified EPA Method 3 , NIA MB ND T~st 9 lnfluent 21501-1 ND Test 10 lnfluent 21501-2 ND Test 11 lnfluent -21~01-3 ND DUI, 21501-2]) ND President m 1534 Eastman Avenue - 5ukeA '* Ventura, Califomia93003 I~ (805) 650-1642 ' FAX (805) 650-1644 I 3UM O? ~001 IO:SSFtM HP LFtSERJET 3200 p.18. I i~ Atmospheric Analysis & Consulting, Inc. I Laboratory Analysis Report I Clie~'.t: : E2C Sampling Date : 05/25101 Project No. : 300-02-2699 Reee~vhag Date : 05/30/0! I MatrLx : AIR Anal.vsis Date : 05/31/{il Units : ppmv R~port Date : ~/05/0! 1 I EPA Metlaocl 15 NIA lVlt) I - T~.9 l._flueat 21501-1 0.4 1.7 ND ND 1.0 57 138 41t5 I Test 10 Intluent 21501-2 0.4 1.5 ND ND ND 8 58 897 Test 11 Influent 21501-3 0.4 ~ 1.9 · I~ ND 'ND 11 779 · ~' 1.6 ND ND ND 11 637 Test 11 Imtluent !21501-3R 0.4 iR-Replicate' IPresident I 1534 Easlman Avenue * ~uitcA · Venmra, Cali/omia93003 ~ (805) 650-1642 * FAX (805) 650-1644 'l .]UH 0'7 2001 iO:53Fh"t HP LFtSER.)ET :3200 I .. IMBO~TORY ANALYSIS i~EPORT SA1VIMLING DATE : 512512001. CLI~EtNT : E2C · I i~ROJEC~f NO. : ~00.02-2fi99 RECEIVLNG DATE 5/30/2001 · A1N'AL¥SIS DATE : 5/30/2001 i lo'NITS /~-. : ppbv REPORT i>AT~ : 6/4/2001 I. 'MA~LX. ' :' Air ! .! ! ~-' Dr. Sucha Paz~ President m :.. 1534 Eastman Avenue ' Suit'eA' Yelltura, Califomia93003 {{~ (80.5) 650-1642 ' FAX (.805).6S(~1644 . · Atmospheric Analysis & Consulting c~a~n ot ;(.;ustoay t-orm '.' -- Analysis Requested Client Name: E2C, Inc 661.831.6906 fax 661.831.6234 . Sample Matrix Project Name: le~.~ ~<;T ~0(¢~:o~ (.) ~>'~_.~ [~ Aqueous Client Address: 5640 District Blvd., Suite 102. Bakersfield, CA 93313 ~' '0 O o ~ Soil ProiectManager: ~~ ~~' .~ ~ m ~ / Sampler Name: ~~ ~ [~r~ ~'~ ~ ~ ~ ~ Sample Dat~ ~ample Time Sample Description and ContainerTyp~ · ~ ~ ~ Commenls Turnaround ~me Requested: 24 Hour 48 Hour _ 5-Day .. Standard. , Relinquished B ~U ~ , ~Received By: Date: Received By: ~ Atmospheric Analysis & Consulting, inc. Client: Project No. : 3~02-2701 Recei~ng Da~e ::05131101 ~trix : ~ An~ysb Dale : 06/01/01 Units : ppmv Rep0~ Dale ~ 06/04/01 E-PA Method 18 ~nflueut Test ~2 21511-1 0.4 1.9 D ~ 0.9 ~0 '2~ 2~4 I~uent Test 13 21511-2 0.4. 2.4 ~ ~ 1.0 ~4 1~7 744,, I~uent Test 14 21511-3 0.4 2 ~ -~ 0.8 .24 70 616 President I i 1534 Eastman Avenue · SuiteA o. Venlura, California 93003 {805) 650-1642 · FAX (805) 650-1644 j ' I pr(fect Number 1801BK04 August 15. 2001 APPENDIX P Piping Friction Loss Graph Appendix ! E2C Remediation, LLC Application/Engineering FriCtion Loss Per Foot of Tubing 5000. 4000 3000 2000 1500 1000 800 600 ' 500 400 300 ' ~3 200 : Z ~ 150 B 80 _o 80 m 50 ~ 40 30 15 10 -/ 6 2.014 .028 .054 .082 .11 .14 .28 .54 .82 1.1 1.4 2,8 5.4 8.2 11 14 z8 FRICTION LOSS INCHES OF WATER PER FOOT OF TUBING Friction Loss in Fittings To calculate friction loss in fittings use chart below. This chart will yield equivalent lengths (in feet) of tubing. Use this length with graph above to find friction loss in inches of water column. NOMINAL PIPE $1ZI:: (INCHF:S) I::QUIVALI=NT TUBING LI::NGTH (Fill:T) 90© EL 45° EL 1~ 3 1.5 1~ 4 2 2 5 2.5 2~ 6 3 3 7 4 4 10 5 5 12 6 6 15 7.5 8 20 10 EG&G ROTRON, SAUGERTIES, N.Y. 12477 · 914/246-3401 · FAX 914/246-3802 I E2C REMEDIATION, LLC ENVIRONMENTAL/ ENGINEERING CONSULTANTS S i n c e 1 9 7 0 I FOURTH QUARTER 2002 " GROUNDWATER MONITORING REPORT ONSITE REMEDIAL STATUS REPORT AND IMPLEMENTATION OF OFFSlTE RAP MR. FAST SERVICE STATION 600 Brundage Lane Bakersfield, California January 21, 2003 Prepared For: Mr. & Mrs. Ki Chu Yi 600 Brundage Lane Bakersfield, California I Prepared By: I E2C Remediation, LLC 5300 Woodmere Drive, Suite 105 Bakersfield, California 93313 I Number 1801BK03 Project Number 1801BK03 Janua~_ 21. 2003 TABLE OF CONTENTS· TABLE OF CONTENTS ............................................................................................................... i :LIST OF FIGURES ....... :.:. ........................................................................................................... ii LIST OF TABLES ...... · .................................................................................................................. ii LIST OF APPENDICES ..... ' ............................. ' .......................... ii EXECUTIVE SUMMARY ................... · ..................... ............................................. 1 Conclusions ......................................................................................................................... 1 Recommendations .................................... : .......................................................................... 2 1.0 INTRODUCTION .................................................................. · . ........................ 3 1.1 Site Description ...........................; ................................................................................. 3 1.2 Regional and Site Geology and Hydrogeology..' ................ ; ...................... ...................... 3 1.2.1 Regional Geology ........... · .......................... 3 1.2.2 Regional Hydrogeology ........................ .................................................................. 4 Subsurface Stratigraphy and Hydrogeology ........................................ 4 1 .2.3 Site Specific 2.0 FOURTH QUARTER 2002 GROUNDWATER MONITORING ................. ,.., ...................... 5 2.1 Groundwater Elevations · . .................................................................... 5 2.4.2 Monitoring Well Purging and Sampling ................................................................... 6 2.4.3 Groundwater Analytical Results .................................... .. 6 B.O IMPI_EMENTATION OF OFFSITE IRAP ..................................................................... ' .... 3.1 Permitting ................ ................................ : ..................................................................... 7 3.2 Trenching and Piping .................................................................. ................. 7 Utility 3.3 Equipment Pad Construction ......................................................................................... 7 4.0 ONSITE REMEDIATION SlATUS REPORT ............... .............................................. 4.1 Remediation System Stanup .............................. ' ........................................... 8 4.1.1 Bomediation System Equipment ..................................... 4.1.2 Be~ulato~ Compliance ......................................................~ ........................... 4.2 On~oin~ System Operations .......................................................................................... 8 5.0 ~ISCUSSIO~ OF BfiMEDIAk EFFIGI[~GY ............................................................ · .... ~.0 GO~GkUSIONS A~D RECOMMENDATIONS ................................................................ ~.1 Conclusions .............................................................................................. ' ................... 10 0.2 8ocommondations ............. ' ............................................................................ 7.0 . klMITATIO~s A~D B[~OBI GfiBTIFICATIO~ .................. ' ..... ............................... 8.0 8[F[~E~GfiS ............................................................... E2C Remediation, LLC ~ Project Number 1801BK03 Janua~_ 21.2003 LIST OF FIGURES Figure 1 Site Location Map Figure 2 ' Site Plan Figure 3 Fourth Quarter 2002 Groundwater Gradient Plot Figure 4 Fourth Quarter 2002 Benzene Isoconcentration Plot Figure 5 Fourth Quarter 2002 TPHg Isoconcentration Plot Figure 6 Trenching Diagram - Offsite Remediation System LIST OF TABLEs Table 1 Summary of Fourth Quarter 2002 Groundwater Monitoring Data . Table 2 Historical Groundwater Elevation Data Table 3 Historical Groundwater Analytical Results Table 4' Summary of VES Monitoring Data Table 5 Mass of Hydrocarbons Removed by VES (based on influent concentrations) Table 6 Mass of Hydrocarbons Removed by VES (based on %LEL) LIST OF APPENDICES Appendix A Fourth Quarter 2002 Groundwater Purge Data Sheets Appendix B Fourth Quarter 2002 Groundwater Analytical Laboratory Report I E¢C Remediation, LLC ii Janua~_ 21. 2003 Proiect Number 1801BK03 EXECUTIVE SUMMARY This report contains the results of the Fourth Quarter 2002 groundwater monitoring event, the progress of onsite soil and groundwater remediation, and'offsite RAP implementation for Mr. Fast Service Station located at 600 Brundage Lane, Bakersfield, California (Site). This report is presented to comply with the directive of the California Regional Water Quality Control Board - Central Valley Region (RWQCB) dated September 21, 2001. This report presents the results of the work activities and.includes analytical data, groundwater elevation data, and interpretations of current groundwater quality and flow direction beneath the Site and the immediate vicinity. All trenching and plumbing installations for the offsite remediation system were completed in October 2002. Manifolds fOr the soil vapor extraction and air sparge systems and construction of a concrete, equipment pad and enclosure were completed in January 2003. Conclusions Based on the data presented in this repOrt, E2C makes the following conclusions: · Groundwater-elevations onsite decreased an average of 2.71 feet relative to the Third Quarter 2002 and decreased an average of.2.44 feet offsite. At well MW- 15S along Fig Street the groundwater elevation increased by more than 3 feet (the well was dry the previous quarter); · The average groundwater gradient from the Site to Fig Street was calculated at 0.065 ft/ft with flow in a south-southeasterly direction for the Fourth Quarter 2002; in the Third Quarter..2002 the. average groundwater gradient was 0.068 ft/ft with flow to the southeast · Wells MW-15D, MW--16, and MW-17D were found to be dry, suggesting that groundwater'flow along Fig Street is laterally discontinuous· Welt MW-15S was dry in the First Quarter 2002 and contained more than 3 feet of water in'the Second, Third and Fourth Quarters of 2002 suggesting that groundwater flow directions fluctuate over time; · F~ee-product was not present in any wells in the Fourth Quarter 2002; · ' Significant concen'trations of TPHg and/or BTEX were reported in the water samples from wells MW-l, MW-7, MW-8, MW-11R, and MW-12 through MW-14; however, benzene was only reported in samples from offsite wells MW~13, MW- 14, and MW,18; · TPHg concentrations decreased at all wells where it was reported the Previous quarter, Probably due to water levels falling below the depth of hydrocarbon- impacted soil in the source area; · Benzene was non-detect in samples from all onsite wells (MW-1 through MW-6 and MW-8), an indication that the combined vapor extraction/air sparging is effectively reducing benZene levels- Benzene was reported at Iow concentrations in samples from on-site wells MW-2 through MW-6 in the Third Quarter 2002; · Total petroleum hydrocarbons as gasoline were 'reportedly non-detect in the grOundwater sample' from downgradient monitoring well MW-17S for the third consecutive quarter; E2C Remediation, LLC .. ~ Project Number 1801BK03 Janua~_ 21. 2003 · TPHg and benzene were reported as non-detect at ViW-15S for the.second consecutive quarter, significant decreases from concentrations of 10,000 pg/L I and 25 pg/L, respectively, in the Second Quarter 2002; · The concentration of benzene in the sample from well MW-18 (7.1 #g/L) significantly decreased since the Third Quarter 2002 (36 pg/L). TPHg remained · . non-detect at this well similar to the previous quarter.. Well .MW-18 is screened in _ a deeper water-bearing zone than nearby wells MW15S and MW-15D; · Remediation (SVE and groundwater air sparge) at the Site began in April 2002. I The remediation affects'Only the on-site portions of the groundwater contaminant plume. Significant decreases in concentrations for groundwater samples collected from monitoring ;~e'ils located on-site were observed (MW-1 and MW-4) I from the First to the Second Quarter 2002 and increasing concentrations were observed at onsite wells in the Third Quarter 2002, possibly the result of rising groundwater levels coming into contact with hydrocarbomimpacted soils. I Decreasing groundwater contaminant concentrations from the Third Quarter to the Fourth Quarter 2002 are likely a result of falling water levels coming into contact with less hydrocarbon-impacted soil; I , · Influent concentrations to the remediation system declined rapidly after start up' indicating a "groundwater-only" contaminant plurfle. Cycling of the system on a three week off and one week on basis resulted in a significant increase in system I influent concentration and hydrocarbon removal rate in December 2002 compaCed to the Third Quarter 2002; and · The remediation system has removed approximately 2,300 to 2,800 pounds of I from the and soil plumes from start up in April 2002 hydrocarbons groundwater through December 2002. I Recommendations Based on the data presented above and the conclusions from this data, E2C makes the following recommendations: I Procurement electrical source remains necessary before the offsite of an power remediation system can be operated as all trenching and plumbing installations, equipment pad enclosure and manifolds have been completed. Due to the long I time and coSt to obtain electrical service through PG&E, E2C lead high recommends use of a generator to provide electricity and propane as supplemental fuel to run the thermal oxidizer; I · OI3tain VE/AS remedial equipment and operate system; off-site remedial · Continue operations and maintenance of the on-site remedial system; and I · Perform quarterly groundwater monitoring and sampling and reporting for the duration of remedial operations plus a minimum of four quarters beyond system shut-doWn of both the on-site and off-site remedial oPerations. E2C Remediation, LLC Janua~_ 21.2003 Prqiect Number. 1801BK03 1.0 · INTRODUCTION This repOrt containsthe.results of the Fourth Quarter 2002 groundwater monitoring event, onsite remediation status and offsitefor the Mr. Fast Service Station at 600 Brundage Lane (Site), Bakersfield, California. This report is presented to comply with the directive of the California · Regional Water Quality Control Board - central Valley Region (RWQCB) dated September 21, 2001. This report presents the results of the work'activities described above and includes groundwater analytical and elevation data, and .interpretations of current groundwater quality and flow direction beneath the Site and immediate vicinity. The report also includes a section on geology and hydrogeology in the. vicinity. ' 1.1 Site DescriPtion The Site is located at 600 Brundage Lane in Bakersfield, California (see'~Figure 1 for Site location map). The Site is located in the SW 1/4 of SE 1/4, Sec. 31, T29S, R28E, Diablo Base an~l Meridian. The present property consists of a rectangular-shaped lot containing one building located in the Northeast corner (see Figure 2 for Site Plan). The building is currently occupied bY a small retail business, Mr. Fast Gas & LiqUors. Attached to the west side of the' building is a fenced in storage area. Old dispenser islands and new dispenser islands are located along the south edge of thebuilding. The property is bOrdered along its northern side by 1st Street, along its eastern side by T Street (on the South side of Brundage T Street becomes Berneta Avenue), along its southern side by Brundage Lane, and along its western side by the Kern Island Canal - Central Branch. Residential areas, interspersed with light commercial/industrial areas, are located adjacent to the Site. Vista High School is located just North of the Site. Highway 58, an East-West trending four-lane divided freeway is located approximatelY 450 feet south of the Site. 1.2 Regional and Site Geology and HydrogeologY .. 1.2.1 Regional GeOIogy The property is located in the south central area of the San Joaquin Valley where the Sierra Nevada, Great Valley, and Coastal Range physiographic provinces meet. The southern end of the Sierra Nevada Province is composed of a massive block of igneoUs and metamorphic rock of Mesozoic age and older. This Sierran block, 40 to 100 miles wide and 400 miles long, slopes five to seven degrees beneath the San Joaquin Valley. The Coastal Range Province on the west consists'of tectonically deformed and fractured marine and non-marine sedimentary rocks of Jurassic, Cretaceous, and Tertiary age, which dip eastward beneath the Sand Joaquin Valley. The Great Valley province is a broad asymmetrical synclinal trough, which is known as the Sacramento Valley in the north and the San Joaquin Valley in the south. Beneath the southern San Joaquin Valley floor, the Sierran plut°nic and metamorphic rock block is overlain by consolidated marine rocks of Jurassic and Cretaceous age. These rocks are overlain by continental marine and non-marine sedimentary rocks of Tertiary age, which are comprised of continental deposits of consolidated to semi-consolidated, fossiliferous sandstone, siltstone, and shale which thicken toward the south and west. The Tertiary rocks, in turn, are overlain by unconsolidated continental deposits, which consist of Pliocene to Holocene river and lake sediments comprised of gravels, sands, silts, and clays. . E2C Remediation, LLC Project Number 1801BK03 · ,l~nua~_ 21. 2003 Surface features of the floor of the San.Joaquin Valley consist of dissected uplands, alluvial fans, overflow areas, and lake bottoms. DisSected uplands lie between the mountains and the nearly flat Valley floor and are manifest in Iow-lying hills through which perennial and intermittent streams flow. These features consist of reworked older alluvium. The alluvial fans. are .the sites of active stream .deposition of sand and silts derived from the sierra Nevada and the dissected uplands. The overflow lands and lake bottoms lie in the central part of the Valley where silt and clay accumulatein quiet lake and marsh environments. 1.2.2 Regional Hydrogeology The Central Valley of California is underlain by a broad, thick hydrogeologic unit, which consists of soil and rock of varying porosity and permeability. Physical 'dimensions are approximately 50 miles wide' at the widest point in the Valley, 400 miles long, and as much as 2,000 feet deep. Recharge to regional aquifers consiSts of infiltration of seasonal precipitati°n and percolation of surface waters. The Valley aquifer of greatest storage, highest quality, and greatest storage, highest quality, and greatest accessibility for domestic and agricultural use consists of the to the of 1,5000 to 2,000 feet alluvial and lacustrine continental deposits extending depths beneath the San Joaquin Va ey floor. , Lithologic and hydraulic properties of these sediments are largely the product of the sediment source and the depositional environment. These sediments range in size from clays to boulders and include all mixtures between the extremes. Those of the west side of the Valley are derived Coastal which tend to consist of shales and fine sandstones with largely from the Ranges, limited permeability. The east sediments are derived mainly from granitic materials of the Sierra Nevada which are generally coarser and much more permeable. Sediments encountered during at the Mr. Fast and adjoining parcels consisted of alluvial deposits boring procedures comprised of fine-to-coarse grained sands containing' quartzite and micas. Permeability in these sediments is high. Regionally, the depth to groundwater ranges between 150 and 200 feet below grade, according to the 1995 Water Sbpply Report published by the Kern County Water Agency in January 1998. Unconfined groundwater beneath the subject property is significantly shallower than the regional depth, presumably because of the position adjacent to the unlined Kern Island Canal - Central ' Branch. In general the hydraulic gradient in the area is towards the northwest. Measurements made within shallow onsite and offsite Wells over the course of this project have shown that the gradient in the unconfined aquifer beneath the Site has been consistently towards the southeast, away from the unlined canal. 1.2.3 Site Specific Subsurface Stratigraphy and Hydrogeology In general, the subsurfaCe at the Site is characterized by approximately 5 feet of silty sand at the surface followed by sand. to approximately 50 to 55 feet bgs. Silty clays, clayey silts, sandy silts, and finer-grained silty sands occur from that depth to. approximately 80 feet bgs. In previous borings fOr wells (e.g., MW-10), first groundwater was encountered at approximately 47 feet bgs. At the boring for well MW-11 R, first groundwater was encountered between. 46.5 and 50 feet bgs. At .well MW-12, first groundwater was not encountered until 56.5 to 60 feet bgs - ! EzC Remedia(ion, LLC pr¢_iect Number 1801BK03 ~l~ll~a~_ 21. 2003 On-site, specifically at wells MW-1 through MW-8, groundwater elevations increased an average (3fapproximately 2 feet from June to August 2001. In the off-site area of wells MW-7, MW-9, and MW-lO groundwater elevations also increased, an average of approximately 1.7 feet. At wells Mw-i1R and 'MW-13, groundwater elevations increased significantly, approximately 7 feet each at wells MW;11R and MW-13. MW-11 R is located approximately 90 feet south of MW-10 and MW-13 is located approximately 100 feet southeast of MW-11R in the general downgradient-direction. This data very indicates that a' steep groundwater gradient exists between MW-10 and MW-11R with the gradient flattening out somewhat in the area of 'MW-11R to MW-!3. A review of the boring logs for the Site revealed that differences in lithology are the cause for .this change in gradient. In the 'area from wells MW-1 and MW-2 to the area of well MW-10, the top of the groundwater the which is generally encountered at approximately 50 feet bgs. table ocCurs above silty layer, This suggests that Principal groundwater movement occurs on top of the silty layer within the coarser-grained materials as flow from the recharge point along the canal until it reaches the area of well MW-lO. Upon reaching the area of well MW-lO, groundwater then matriCulates down into the Silty layer, which has a lower hydraulic conductivity than the coarser materials lying above (i.e., takes longer for the groundwater to move through the finer grained flow medium). This transfer from · flow in coarser materials to flow in finer-grained materials creates a steeper gradient. As expected, groundwater elevations downgradient of the change in flow medium materials are much deeper than: those Upgradient of this change and that area downgradient can experience a wide fluctuation in levels due to even minor recharge or discharge effects. 2.0 FOURTH QUARTER 2002 GROUNDWATER MONITORING E2C .personnel conducted Fourth Quarter 2002 groundwater monitoring activities from December 5-6, 2002, which included measuring depths to groundwater, checking wells for free- product, purging wells, and collecting groundwater samples. 2.1 Groundwater Elevations Prior'tO purging and sampling, the depth~ to groundwater was measured at all wells using a water level meter. Depth to groundwater at each monitoring well was measured below Solinst the top of casing (B.TOC) at the north side of the casing to the nearest 0.01-foot (see .Table 1 for summary of depths; Table 2 contains a summary of historical measurements). Based on the data the Site, measurements were taken at the wells in order of least previous regarding impacted 'location to most impacted location. In addition, each well was checked for free- product using a YelloWjacket oil-water interface probe. The interface probe and Solinst water level indiCator were washed in an Alconox solution and rinsed with clean water prior to each use and between each well. Groundwater elevations were then Calculated by subtracting the measured depths from the surveyed elevation.' Groundwater elevations for this sampling round are summarized in Table 1. and with previously collected elevation data for the Site in Table 2. Based on the depth to groundwater measurements, groundwater flow is to the south-southeast at a steep average gradient'of 0.065 ft/ft from the Site to Fig Street (onsite gradient of 0.018 ft/ft and offsite gradient of 0.073 ft/ft) (Figure 3). E~C Remediation, LLC Project Number '1801BK03 Jcnua~_ 21. 2003 Onsite groundwater elevations decreased an average of 2.71 feet since the Third Quarter 2002 and' offsite groundwater elevations decreased an average of 2.44 feet indicating groundwater is discharging from the perched water zone. Water level fluctuations in this area appear to be strongly, influenced by recharge from the unlined canal west of the Site. Falling water'levels suggest that 'recharge is currently not occurring or is insignificant relative to discharge from the perched water zone 2.4.2 Monitoring Well Purging and sampling All monitoring wells were purged 'in order to obtain representative groundwater samples. A minimum of three well casing volumes of groundwater were removed from each well. prior to sampling utilizing a battery-poWered submersible pump. A casing volume is calculated by multiplying the height of the freestanding water column in the well by the cross-sectional area of the well casing. During purging, groundwater parameters of temperature, pH and conductivity were measured as water was pumped from the wells to 'verify sufficient purging and stable physical parameter measurements on field instruments (see Appendix A for groundwater purge data sheets). The pump was decontaminated in a solution of Alconox and water and rinsed with dean water before each. use. After purging, the wells were sampled using new disposable bailers. 'A groundwater sample from each well was decanted into .four 40-mi volatile organic analysis (VOA) vials. Care was taken to prevent headspace or bubbles in the vials, which were sealed with Teflon-lined lids. Samples were labeled and placed in an iced .cooler maintained at 4 degrees Centigrade, accompanied with a Chain-of-Custody document for transport to the analytical laboratory. 2.4.3 Groundwater Analytical Results Halcyon Laboratories, Inc. (Certification #1920) of Bakersfield, California analyzed the groundwater samples for TPHg using EPA Method 8015M, BTEX U'sing EPA Method 8260b, and fuel oxygenate compounds of Diisopropyl Ether (DIPE), Ethyl Tertiary Butyl Ether (ETBE), Methyl tertiary Butyl Ethe¢ (MtBE), Tertiary Amyl Methyl Ether (TAME), and Tertiary Butyl Alcohol (TBA) using EPA Method 8260b. Appendix B presents the analytical laboratory report. Laboratory analytical results for the Fourth Quarter 2002 are summarized in Table 1 and along with historical data in Table 3. Free-product was not found in any of the monitoring wells this quarter therefore, all wells that were not dry were sampled. The results of the groundwater chemical analyses are summarized following: · Significant concentrations.of TPHg and/or BTEX were reported in the water samples from wells MW-l, MW-7, MW-8, MW-11R, and MW-12 through MW-14; however, benzene was only reported in water.samples from MW-13, MW-14, and MW-18 concentrations ranging from 3.1 pg/L (MW-14) to 14 pg/L (20 #g/L in duplicate sample) (MW-13) (see Figure 4 for benzene isoconcentration plot); · Toluene, ethylbenzene, and total xylenes were reported at concentrations from 18 pg/L (MW-14) to 29,150 #g/L (MW-11R), 1.3 pg/L (MW-10) to ranging 4,260 #g/L (MW-7), and 0.6 pg/L (MW-4) to 14,380 pg/L (MW-8), respectively; .. · TPHg was reported in all water samples, except MW-6, MW-9, MW-15S, MW- 17S, and MW-18, at concentrations ranging from 70 #g/L (MW-3).to 64,700 pg/L (MW-11 R) (.see Figure 5 for TPHg isoconcentration plot for distribution); and E2C Remediation, LLC u J~nuarv 21.2003 f=r(~iect Number 1801BK03 · 'Fuel oxygenate compounds of MtBE, DIPE, ETBE, TAME, and TBA were not detected in any of the groundwater Samples. 3.0 IMPLEMENTATION OF OFFSITE IRAP The RWQCB granted approval of the January 26, 2001 offsite Interim Remedial Action Plan (IRAP) and as amended on July 20, 2001 by letter dated January 28, .2002. Fieldwork for implementation of the offsite IRAP began in' July 2002 with the drilling and installation of soil vapor extraction (SVE) and air sparge (AS) wells south of Brundage Lane. A total of four (4)" SVE wells (VE-6 through VE'9) and five (5)~ AS wellS (AS~4 through AS-8) were installed offsite. These items were previously reported along with the Third Quarter 2002 quarterly monitoring report. Trenching and piping fOr the offsite remedial system were completed in October 2002. Construction of the AS and VE manifolds and a concrete equipment pad and equipment enclosure were'completed in January 2003. Remaining items for offsite IRAP implementation include obtaining electrical service, installation of the thermal oxidizer, air compressor and associated deviceS, and remediation system startup testing. 3,1 Permitting The San Joaquin Valley Unified Air Pollution Control District (SJVUAPCD) granted an Authority ~to Construct permit (No. S-3931-2-0) on December 10, 2002 for installation of the °ffsite remediation system. 3.2 Utility Trenching and Piping Trenching and piping installations for the offsite remediation system were completed in October 2002. A backhoe was used to excavate trenches measuring approximately 2 feet wide by 2 feet deep from each SVE and AS well to the equipment enclosure area. Approximately 6 inches of sand Was placed in the bo'ttom of the trench and compacted to 90% relative density before the piping was installed. The piping was then placed in the trenches at the locations shown on Figure 6. After installation of the piping, the trenches were backfilled with six inches of sand followed by native soil to ground surface and compacted to 90% relative density. SVE piping consiSts of 2-inch ID Schedule 40 PVC and air sparge piping consists of l-inch ID Schedule 40 PVC in th·e subsurface and 1-inch diameter galvanized steel above ground. Each AS and SVE well was piped to the equipment enclosure area individually. Each piping run was manifolded above ground at the equipment area in January 2003. A control valve was installed on the manifold for each well so that the flow rate from each well can be adjusted on an individual basis. All manifolding and plumbing was performed-in accordance with local building ordinances and codes. 3.3 Equipment Pad Construction In January 2003, a concrete equipment pad was constructed at the location shown in Figure 6 for installation of the offsite remediation equipment. Prior to construction, the ground was leveled and compacted in preparation for pad construction. A concrete pad was constructed that measures approximately 15 feet by 20 feet by 4 inches thick. A chain-link fence was installed around the perimeter of the pad for security purposes. 'E~C Remediation, LLC January 21.2003 Project Number 1801BK03 ' 4.0 oNSlTE REMEDIA TION STATUS REPORT 4; 1 Remediation System Startup . . The on-site remedial system consists of s0il vapor, extraction and groundwater air sparging · equiPment. Operation of the on-site system commenced on April.4, 2002. Startup testing was performed on April 10, 2002 under the inspection of Mr. Bruce Muir-SJVUAPCD. The initial remediation Progress report for the project was submitted' in conjunction with the Second Quarter 2002 Groundwater Monitoring Report. Future reports will .be provided on a quarterly basis, The folloWing sections provide information on the status Of the project through the. current quarter. 4.1.1 Remediation System Equipment The vapor extraction remediation system (~onsists of a regenerative type vapor extraction blower to extract vapors from a network of six wells. An electricallY heated Solleco Model 250 ECAT thermal/catalytic oxidizer is connected to the system to reduce vapor emissions entering the atmosphere. The unit's minimum operating temperature is 600 degrees Fahrenheit (°F) in catalytic mode. This temperatUre is set to ensure vapor Oxidation at reasonable electrical cost. Furthermore, the 'unit has a catalytic module to complete the oxidation process. For improved reliability and safety, the valve controls, actuators, and components are controlled by relay logic. . The Solleco 250 is equipped with automatic air diiution capability and a noise reduction muffler. The system has been modified with a 200-gallon capacity water 'knockout' pot to temporarily store water entrained in the vapor stream. This remediation equipment is designed to shut down. and lock out in the event of a system malfunction. The various safety features include high and Iow oxidizer bed temperatures, high and Iow blower pressure, high intake loWer explosive limit (LEL), high and Iow air pressure, high and iow exhaust temperature, and water knockout malfunction sensor. The system is equipped with a Zip-drive paperless recorder and instr'umentation to continUously record the heat exchanger temperature, the combustion temperature, the catalytic outlet temperature,' the system flow rate in standard cubic feet per minute, and the %LEL. 4.1.2 Regulatory Compliance E2C on behalf and under the supervision of the APCD Inspector collected samples of the influent and effluent vapor emissions on APril 10, 2002. The samples were collected in Tedlar bags and transported to a certified laboratory under chain of custody protocol.' The samples were Submitted to Performance Analytical, Inc. of Simi Valley, California, a state certified laboratory (DHS Certification No. 2380), and analyzed for Total Organic Gases using EPA Method TO-3. Based on the analytical results, the destruction efficiency is 96.1%. The daily VOC emissions rate is 7.12 pounds per day (lbs/day) based on the observed system flow rate and a conversion of effluent sample laboratory data to volumetric concentration and 6.74 lbs/day based on the flow rate FID measurement of the effluent vapor stream. Based on these data, the destruction efficiency was calculated to be 96.1%, a value that is in compliance with the minimum 95% destruction efficiency stated in the APCD permit conditions. 4.2 Ongoing System Operations E2C personnel periodically measure influent oxidizer concentrations using an FID. A summary of operational data for the on-site system collected during E2C's periodic visits is provided in E~C Remediation, LLC Janua~_ 21. 2003 ~'rO_iect Number 1801BK03 Table 4.. The initial conCentration as measured with the FID on April 4, 2002 was 950 parts per million volume (ppmv). After approximately one month of operation, the influent.concentration' decreased to 200 ppmv as measured with the FID. During this period, the influent concentration.. was monitored at 'different well field configurations to optimize Vapor extraction. In May 2002, the influent concentration continued to drop falling to 30 ppmv. The vapor extraction system was shut down on May 14, 2002 to allow conditions to stabilize prior to groundwater monitoring and to begin cycling the system off an~ on to allow for the accumulation of hydrocarbon vapors. Cycling of the sYstem on a weekly basis appears to have nearly doubled the influent concentration during the intermittent weeks of operation (Table 4). '- · During the Fourth Quarter 2002, operation of the system was cycled with approximately.three weeks of shut down for each operational 'week. The system was operated during the weeks of November 11, December 2 (partial week), and December 9, 2002 (partial week) and was shUt down the intervening weeks during t. he Fourth Quarter 2002. · Groundwater air sparging also began on April 4, 2002 utilizing wells AS-l, AS-2, and AS-3 to deliver air to the groundwater. Initial airflow at these wells varied from 0.25 to 4 scfm at oPerating pressures of 1.5 to 5.5 pounds per square inch (psi). Due to these Iow flow rates, the air compressor was uPgraded on April 15, 2002 with an Ingersoll Rand Model SSR EP10 Rotary Screw Air Compressor to increase the flow rate. The valve at well AS-1 was closed on December 16, 2002 to focus efforts at wells AS-2 and AS-3. Flow rates have increased varying from 4 to 14 scfm at operating Pressures of 16 t° 18 psi due to the larger capacity air compressor. 5.0 DISCUSSION OF REMEDIAL EFFICIENCY Moderately high influent concentrations and high flow rates were observed at the onset of the remediation project. Rapid declin'es in the influent concentrations were observed after approximately 30 d.ays of continuous operation. Significant and rapid declines in influent concentration are indicative of "groundwater-only" contaminant plumes 'or can be caused by channeling in. the vadose zone. Generally, when channeling is occurring an increase in flow rate and decrease in well field vacuum are observed. E2C field personnel carefully observed machine operational parameters and did-not record significant flow increases or well field vacuum decreases; therefore, the significant decline in influent concentrations is likely a result of a "groundwater-only" contaminant plume. In an effort to increase the hydrocarbon removal rate, E2C began cycling (one week on and one week off) the system to determine whether cycling would increase influent concentrations. The results clearly demonstrate that cycling increased influent concentrations. Prior to cycling on May i4, 2002, influent concentrations had dropped to 95 ppmv. After a one-week off cycle, influent concentrations were measured at 300 ppmv at restart. As cycling continued, the results became even more dramatic. On June 17, 2002 influent concentrations were measured at 620 ppmv, an over lO-fold increase. Hydrocarbon removal rates are a function of influent concentration, flow rate, 'and run time. Flow rate remained nearly constant, run time was halved (due to cycling) and influent concentration increased by eleven (11) times; .therefore, the net result is a 5.5 times increased removal rate over the .same elapSed calendar time. As these results clearly demonstrate, cycling of the remediati°n system at this site produces significar~tly .higher hydrocarbon removal rates. Therefore, it is'E2C's recommendation to E~C Remediation, LLC ,/anua~_ 21.2005 ' Pro'_/ect Number 1801BK03 continue cycling the system until Cycling no longer ProdUces desirable results. Cycling of the system on a one-week operational and three-week non-operational basis has recently resulted in increased influent concentrations and'hydrocarbon removal rates in December 2002. 6. 0 CONCLUSION$ A ND RECOMMENDATION$ 6.1 Conclusions Based on the data presented in this report, E2c makes the following conclusions: · Groundwater elevations °nsite'decreased an average of 2.71 feet relative to the Third Quarter 2002 and decreased an average of 2.44 feet offsite. At well MW- 15S along Fig Street the groundwater elevation increased by more than 3 feet (the well was drY the previous quarter); · The.average groundwater gradient from the Site to Fig Street was calculated at 0.065 ft/ft with flow in a south-southeasterly direction for the Fourth Quarter 2002; in the Third Quarter 2002 the average groundwater gradient was 0.068 ft/ft with flow to the southeast; · Wells MWo15D, MW-16, and MW-17D were found to be dry, suggesting that groundwater flow along Fig Street is laterally discontinuous. Well MW-15S was dry in the'First Quarter 2002 and contained more than 3 feet of water in the Second, Third and Fourth Quarters of 2002 suggesting that groundwater flow directions fluctuate over time; · Free-product was not present in any wells in the Fourth Quarter 2002; o Significant concentrations of TPHg and/or BTEX were reported in the water samples from wells MW-l, MW-7, MW-8, MW-11R, and MW-12.through MW-14; however, benzene was only reported in samples from offsite wells MW-13, MW- 14, .and MW-18; · · TPHg concentrations decreased at all wells where it was reported the previous quarter, probably due to water levels falling below the depth of hydrocarbon- impacted soil in the source area; r · · Benzene was non-detect in samples from all onsite wells (MW-1 through MW-6 and MW-8), an indication that the combined vapor extraction/air sparging is effectively reducing benzene levels. Benzene was reported at Iow concentrations in samples from on-site Wells MW-2 through MW-6 in the Third Quarter 2002; .' · Total petroleum hydrocarbons as gasoline were reportedly non-detect in the groundwater sample from downgradient monitoring well MW~17S for the third consecutive quarter; · TPHg and benzene were reported as non-detect at MW-15S for the second consecutive quarter, significant decreases from concentrations of 10,000 pg/L and 25 pg/L, respectively, in the Second Quarter 2002; · The concentration of benzene in the sample from well MW-18 (7.1 pg/L) significantly .decreased since the Third Quarter 2002 (36 pg/L). TPHg remained non-detect at this well similar to the previous quarter. Well MW-18 is screened in a deeper water-bearing zone than nearby wells MW15S and MW-15D; · Remediation (SVE and groundWater air sparge) at the Site began in April 2002~ The remediation affects only the on-site portions of the groundwater contaminant 10 E2C Remediation, LLC, ' ~ - Janua~_ 21. 2003 P~ r¢ject Number 1801BK03 I plume. Significant decreases in concentrations for groundwater samples ' collected' from monitoring wells located On-site were Observed (MW-1 and MW-4) " from the First to the second Quarter 2002 and increasing concentrations were observed at onsite wells in the Third Quarter 2002, possibly the result of rising groundwater levels coming into contact with hydrocarbon-impacted soils. Decreasing groundwater contaminant concentrations from the Third Quarter to the Fourth Quarter 2002 are likely a result of falling water levels coming into contact with less hydrocarbon-impacted soil; I · Influent concentrations to the remediation system declined rapidly after start up indicating a "groundwater-only" contaminant plume. Cycling of the system on a three week off and one Week on basis resulted in a significant increase in system in.fluent concentration and hydrocarbon removal rate in December 2002 compared to the Third Quarter 2002; and ~ · The remediati°n system has removed approximately 2,300 to 2,800 pounds of I ' hydrocarbons from the groundwater and soil plumes from start up in April 2002 through December 2002. I .6;2' Recommendations BaSed on the data presented above and the conclusions from this data, E2C makes the ~1 following recommendations: · Procurement of an electrical power source remains necessary before the offsite remediation system can be operated as all trenching and plumbing installations, :equipment pad enclosure and manifolds have been completed. Due to the long lead time and high cost to obtain electrical service through PG&E, E2C recommends use of a generator to provide electricity and propane as I supplemental fuel to run the thermal oxidizer; · Obtain VE/AS remedial equipment and oPerate off-site remedial system; · Continue operations and maintenance of the on-site remedial system; and I and sampling and reporting for the gr°undWater Perform quarterly monitoring duration of remedial operations'plus a minimum of four quarters beyond system I shut-down of both the on-site and off-site remedial operations. '1 " 11 E2C Remediation, LLC . Pro?ect' Number 1801BK03 January 21.2003 7.0 LIMITATIONS AND REPORT CERTIFICATION E2C has' prepared this Report-in accordance with generally accepted standards of care existing in California at this time. It should be recognized that.definition and evaluation of geologic conditions is a difficult and inexact science. Judgments leading to conclusions and recommendations are generally made with limited knowledge of surface conditions present. No warranty expressed or implied is made. This report has been prepared under the professional supervision of the registered professional whose seal and signature appear herein. The conclusions of this report are based solely on the Scope of'Services outlined and the sources of information referenced in this report. Any additional information, that becomes available concerning the Site should be submitted to E2C so that our conclusions may be reviewed and modified, if necessary. This report was prepared for the sole use of Mr. & Mrs. Ki Chu Yi and/or agent(s). Senior Geologist ~ ' ,~, ~ Principal Hydrogeologist ! ~! EzC Remediation, LLC pr(~]ect Number 1801BK03 January21. 2003 8. 0 REFERENCES (AEC, 2000a) Advanced Environmental Concepts, Inc., February 2000, Continuing Soil and GroundWater Assessment Report at Mr. Fast Gas & Liquors, 600 Brur~dage Lane, County of Kern, Bakersfield, California (AEC, 2000b) Advanced Environmental Concepts, Inc., July 2000, Continuing Soil and Groundwater AsSessment Report at Mr. Fast Gas & Liquors, 600 Brundage Lane, County of Kern, Bakersfield, California (E2C, 2001) E~C, Inc., July 26, 2001 ,' Request for Approval of Off-Site Remediation & Request for Approval to Install Additional Groundwater Monitoring Wells, Underground Storage Tank Release, Mr. Fast Service Station, 600 Brundage Lane, Bakersfield, California '(E2C, 2001a) E~C Remediation, LLC, August 15, 2001, Report of Findings for Additional Site Characterization & SVE/AS Pilot Testing, Second Quarter Groundwater Monitoring Report, Revised Remedial ActiOn Plan (includes Workplan for Additional Groundwater Characterization), Mr. Fast Service Station, 600 Brundage Lane, Bakersfield, California Remediation, LLc, October 15, 2001, Third Quarter 2001 (E2C, 2001b) E~C Groundwater Monitoring Report, Mr. Fast Service Station, 600 Brundage Lane, Bakersfield, Califomia (E2C, 2002) E2C Remediation, LLC, January 11, 2002, Fourth Quarter 2001 Groundwater Monitoring Report and Additional Groundwater Characterization Report of Findings, Mr. Fast Service Station, 600 Brundage Lane, Bakersfield, California Grisanti & Associates, Inc., February 1992, Transaction Environmental 1992) Site Assessment, Mr. Fast #6 Liquor and Deli Facility, 600 Brundage' Lane, County of Kern, Bakersfield, California (RWQCB, 2000a) California Regional Water Quality Control Board - Central Valley Region, 17 November 2000, .Underground Storage Tank Release, Mr. Fast Service Station, .600 Brundage Lane, Bakersfield, California (RWQCB Case No. 5T15000619) (RWQCB, 2000b) California Regional Water Quality Control Board - Central Valley Region, 29 November 2000, Underground. Storage Tank Release, Mr. FaSt. Service Station, 600 Brundage Lane, Bakersfield, California (RWQCB Case No. 5T15000619) (RWQCB, 2001) California Regional Water Quality Control Board- Central Valley Region, 16 January 2001, Underground Storage Tank Release, Mr. Fast Service Station, 600 Brundage Lane, Bakersfield, California (RWQCB Case No. 5T15000619) E2C Remediation,. LLC ' 1 3 ~lanua~_ 21. '2003 Number 1801BK03 (RWQCB, 2001c) California Regional. Water Quality Control Board - Central Valley RegiOn, 26 February 2001, Underground Storage Tank Release, Mr. Fast Service Station, 600 Brundage Lane, Bakersfield, California (RWQCB Case No. 5T15000619) (RWQCB, 2001d) California Regional Water Quality Control Board -'Central Valley Region, 20 April 2001, Underground Storage Tank Release, Mr. Fast Service Station, 600 Brundage Lane, Bakersfield, California (RWQCB Case No. 5T15000619) : (RWQCB, 2001e) California Regional Water Quality Control Board - Central Valley Region, 21 September 2001, Underground StOrage Tank Release, Mr. Fast Service Station, 600 Brundage Lane, Bakersfield, California (RWQCB Case No. 5T15000619), Review of "Request for Approval of Off-Site Remediation and Request for Approval to Install Additional Groundwater Monitoring Wells" (RWQCB, 2002) California Regional Water Quality Control Board - Central Valley Region, 24 january 2002, Underground Storage Tank Release, Mr. Fast Service Station, 600 Brundage Lane, Bakersfield, California (RWQCB Case No. 5T15000619) (WEECO, 1993) Western Environmental Engineers Company; July 1993, Site Assessment Report, Mr. Fast Service Station, 600 Brundage Lane, Bakersfield, Califomia E2C. Remediation, LL C · project Number 1801BK03 Jcnuar~ 21.2003 ! ! FIGURES Figure 1 Site Location Map' Figure.2 Site Plan Figure 3 Fourth Quarter 2002 Groundwater Gradient Plot Figure 4 Fourth Quarter 2002 Benzene Isoconcentration Plot Figure 5 Fourth Quarter 2002 TPHg Isoconcentration Plot Figure 6 Trenching Diagram - Offsite Remediation System ! ! i Figure:; E~C Remediation, LLC E2CRemediation, LLC MR. FAST SERVICE STATION FIGURE 600 BRUNDAGE LANE 5300 Woodmere Dr., Suite105 BAKERSFIELD, .CALIFORNIA Bakersfield, California 93313 1 Telephone: (661) 83.1-6906 SITE' LOCATION MAP Facsimile: (661) 831-6234 LEGEND I~- Monitoring Well Location Shallow Monitoring Well Location -~ Deep Monitoring Well Location ~t Abandoned Well Location APN: 011-031-05 V vapor Extraction Well Location "T" Street . [] Air Sparge Well Location BM Benchmark MW-2 ' ~ I ,,,,. ~,., s.,',,- m", I Il VE-2 ~' Cu~.:Gas' I I -- Pumps yE-iV []'"'~.. o VE-4 ~'-~ M~,~ ,,,,~ I I APN: 011-032-16 M W..~ MW-3~ MW-1MW_8 vE-3 o .,,-~'~_-~ MW~5fl~ ~J Brundage.Lane ~ BM Elevation +396.41 MW-6 92fl West; 221t South BRUNDAGE LANE MW-9 AS-4 MW-10 Vi-6 [.? [ ~ J AS-61-' MW-12 u~ I ..~ MW-11R..~ MW-11 MW-14 I011-048-15 VE-8 ~W_I~3 011-041-01 011-041-02 AS-8 [ I I VE-9' 1011-048-101 011-048-09 ! 011-048-08 011-041-12 MW-15d _~W116 MW_, 7~_ _~FMW-17d 'N FIG STREET MW-15S ~ ~+ l 0 I 80 MW-18 I 40 I FREEWAY RIGHT-OF-WAY SCALE: 1 inch = 80 feet E2C Remediati°n, LLC MR. FAST SERVICE STATION FIGURE 600'BRUNDAGE LANE 5300 Woodmere Dr., Suite i05 BAKERSFIELD, CA. 2 Bakersfield, California 93313 Telephone: (661) 831-6906 Facsimile: (661)831~6234 - SITE PLAN 0 I 80 APN: 011-031-05 SCALE: I inch = 80 feet "T" Street 600 Brundage Lane ~- APN: 011-032-16 VE;2 ~ a = Brundage Lane V Curre t G s P" 351.00 YE-4 MW-6 MW-8 92fi West; 22It South BR MW-9 MW-7 MW-10 011-048-14 MW-12 .LEGEND Monitoring Well Location ' -'~ Shallow Monitoring Well Location Ol Deep Monitoring Well Location MW-15d MW-17s MW-17d Abandoned Well Location FIG STREET "~+ r'~ '"~-+ Vapor Extraction Well Location MW-15s Oo BM Benchmark ~d3'~Groundwater Elevation'Contour FREEWAY RIGHT-OF-WAY ~' (FT MSL) ' ~ Groundwater Elevation (ET MSL) E2C .Ren~ecli~ztiotz, I_.,[,C MR. FAST SERVICE STATION FIGURE 600 Brundage Lane 5300 Woodmere Dr.; Suite 105 Bakersfield, California Bakersfield, California 93313 3 Telephone: (661) 831-6906 FOURTH QUARTER 2002 Facsimile: (661) 831-6234 GROUNDWATER GRADIENT' PLOT .0 I 80 · APN: 011-031-05 SCALE: .. ! inch = 80 feet "T" Street I Mr, Fast Service Station m~-~ 600,.unda,e L... F APN: 011-032:16 i VE-2 ,~ c ...... Gas Brundage Lane Pumps MW-6 MW-3 . '1,-~'~---1 MW-5 II BM Elevation 92ft West: 22ft South ! BRUNOAGE LANE . _ ~ AS-4 MW-10 ' MWr12 MW-11R MW-11 LEGEND ' AS-8 I~ Monitoring Well Location I IVE'9 ~ / I Shallow Monitoring Well Location , o~-o48.;o I o1~.o48-o9 I o~t-o~ · ~ I,, oH-o4t.~2 MW-17s MW-17d I + Deep Monitoring Well Location MW-15d ~ MW-1.6 · Abandoned Well Location FIG STREET ~ W-18 ~ ,~ Vapor Extraction Well Location I '-- r~DRY V ~ ~ BM Benchmark FREEWAY RIGHT-OF-WAY I [--~ Benzene Concentration in ug/L E2C Remediation, LL¢ MR. FAST SERVICE STATION FIGURE . 600 Brundage Lane i 53o0 Woodmere Dr., Suite 105 Bakersfield, California Bakersfield, California 933!3 ' 4 Telephone: (661) 831-6906 FOURTH QUARTER 2002 Facsimile: (661) 831-6234 BENZENE ISOCONCENTRATION PLOT I 0 J 80. APN! 011-031-05 SCALE: i inch = 80 feet "T" Street MW-2 APN: 011-032-16 VE-2 Brundage Lane V Pumps V4 MW,6 MW Jsoconcentration ~ '~ C in ug/L MW-9 MW- 10 VE-8 LEGEND + Monitoring Well Location -(~ Shallow Monitoring Well Location Ol ..~ Deep Monitoring Well Location MW-lSd MW-16 MW-17s MW-lTd 0 Abandoned Well Location FIG STREET MW.-15, ~, Vapor Extraction Well L~ation BM Benchmark FREEWAY RIGHT-OF-WAY ~ TPHg Concentration in uCL E2¢ ]~emediatioth I~I_,C MR. FAST SERVICE STATION FIGU RE · 600 Brundage Lane I 5300 W0odmere .Dr., Suite 105 ' Bakersfield, California . Bakersfield, California 93313 ~ Telephone: (661)'831-6906 ' FOURTH QUARTER 2002 '~' i .' .Facsimile: (661) 831-6234 TPHg ISOCONCENTRATION PLOT LEGEND 'Monitoring Well Location Well Location Shallow Monitoring · -~ Deep Monitoring Well Location · ' Abandoned Well Location APN: 011-031-05 ' '~' Vapor Extraction Well Location '~" Street [] Air Sparge Well Location I-- BM Benchmark . 'LLI MW-2 [ Mr. Fast Service Station 600 ~rundage Lane VE-2 X/' Current Gas Pu,,mp, VE-4 V~W MW-6 MW-3 -1 MW-5 APN: 011-032-16 ---- -~ ~V~'i--i~fEI~iMW'8 . ~ j used Brundage Lane . ~ Furniture BM Elevation E'5 J store +396.41 MW-6 BRUNDAGE LANE Equipment · /Pad MW-9 011-048-14 011-048-06 MW-10/ Locations ~'~)- MW-11R-~ A[W'11 , MW-14 I 011-041-11 AS-8 [~ 011-048-10 011-048-09 011-048-08~ 011-041-12 MW-15d :.~W-16 MW-17~::~ +Mw-17d 0 I 80 MW-18 I 40 I FREEWAY RIGHT:OF-WAY SCALE: 1 inch = 80 feet .. E2C Renzediation, LLC MR. FAST SERVICE STATION 600 BRUNDAGE LANE FIGURE 5300 Woodmere Dr., Suite lO5 BAKERSFIELD, CA... Bakersfield, California 93313 6' Telephone: (661) 831-6906 TRENCHING DIAG RAM Facsimile: (661)831-6234 OFFSITE REMEDIATION SYSTEM Janua~_ 21. 2003 project Number 1801BK03 i- TABLES Table 1 Summary of Fourth Quarter 2002 Groundwater Monitoring Data Table 2 Summary of Historical Groundwater'Elevation Data' Table.3 Summary of Historical Groundwater Analytical Results Table 4 Summary of VES Monitoring Data Table 5 Mass of Hydrocarbons Removed by VES (based on influent 'concentrations) Table 6 Mass of Hydrocarbons Removed by VES (based on %LEL) Table;; I E~C Remediation, LLC .. 'Project Number 18018K04 January 21, 2003 TABLE 1 SUMMARY OF FOURTH QUARTER 2002 GROUNDWATER MONITORING RESULTS Mr. Fast Service Station 600 Brundage Lane, Bakersfield, California December 5-6, 2002 WELL ID DATE WATER ELEV. ELEV. , .j , ~ ..................................................................................................... (feet BTOC) (feet) (feet MSL) (feet MSL) pg/L MW-1 12/5/02 43.18' 394.03 '350.85 nd<0.5 19 1,180 1,140, 10,630 nd<2.5 nd<0.5 . _n_ _d < _0. _. .5__ ?__d<_0_._5~.__n_dF_0._5._ ' ...................................... ~:~1 .... :~-~'1-:9~- ~d~..'~ .... ~:5 .... iT:3- ..... ..... -~-.~- ......... 2-2J:) ...... ~2.5. --~:~-~:~-" nd<0.5 nd<0.5 nd<0.5 M.W-2 ...... !2/5/_~2. ~3_.,0,_9. MW-3 12/5/02 43.46 -'394.64 351.18 nd<0.5 nd<0.5 2.1 2.7 70 nd<2.5 nd<0.5 nd<0.5 nd<0.5 nd<0.5 'MW-4 12/5/02 43.70 394.14 350.44 nd<0.5 nd<0.5 nd<0.5 0.6 110 nd<2.5 nd<0.5 nd<0.5 nd<0.5 nd<0.5 tvlW:.6 _ ..!_~5/?_2 42.~5 ........ 39_3-76 ..... 35_1._7_1~ _ ~n_d_<_°_.5_ ....n._d_<0..5 ...... _1_:3 ....... _1..:_5_ ..... n_d_<_5q .... _n.d<~:_5___ __nd_<0_~..5_._ _n_d__<0_-5 ..... __n~50.5_ ..... n_ .d_<_o - 5.. .. MW-7 12/5/02 44.48 393.63 349.15 nd<0.5 -1;~_8~ __4.260 ...... 4:6_3_.0_ ...... 1_~,_9__0_0 .... _n_d~ 2.~5__ __.~_d_<0._5. nd~):.5 _ _n_d_<_0:5- .... n~.d_<_0._.~__ MW-8 i2/~/~' 43.95.... 3~3:95-"350.~0-°'' '"d-;-0:5- 19,900 1,270 14,380 54,000 nd<2.5 nd<0.5 ,d<0.5 nd<0.5 .nd<0.5 MW-9 '~2/~/-02 '~4:4'.'50 ~ ~94._05 .... 349.~5 .... ~nd_<_0:.5_ ad5O_.5 ..... .2_;2 ....... _5~.._3 MW-10 ' :12/5/0-2 -44.88-' ' 392.91 348.03 nd<0.5 nd<0.5 1.3 2.8 160 nd<2.5 nd<0.5 nd<0.5 nd<0.5 nd<0.5 MW-11. Well taken Out of Service- Repl_ac.ed_by Mw.::I..I~R_ ........ - -i~i'ii.i'.: i..~ "i "i.ii'.'_~_ail {a'~ir?~t MW-i-IR 12/6/02' 46.__82 ...... 39:1..33 344.51 nd<0.5 29 150 nd<0.5 -~-930 ..... :- '64:7~'0'-! nd<2.5 nd<0.5 nd<0.5 nd<0.5 nd<0.5 ~W::~2~'.12/15~i~2'i 4_5:0_2 ....... _3_92.06 . "_.i'34~: r,-d-;-0:~- .... 4'3~ ~-~00 MW:I~3 ..... :!~6!02_ ,. 48.70 . 392.00 343.30 14 ' 7,020 1,980 8 420 40,900 ' nd<2.5 nd<0.5 nd<0.5 nd<0.5 ~ __n.~<__0..~_ MW-15D 12/5/02 dry . 390.72 NSWD MW-16 12/5/02 dry 390.97~._ ~ NSWD '~W:l~D .... ~2~5~02 ..... :;~ry ...... 390.91 NSWD .-' .... 57:6 .......... Notes: · Duplicate of MW-13 labeled as MW-19 on Chain-of-Custody MtBE = Methyl tertiary-Butyl Ether , Results in microg?ams per liter (//g/L) = parts per billion (ppb) NA = Not analyzed 'B = Benzene nd = Below Practical Quantitation Limits: BTEX-O.5 #g/L, TPHg-50//g/L and MtBE/DIPE/ETBE/TAME-0.5//g/L; TBA-2.5 #g/L BTOC = Below Top of CaSing NSWD ~ Not Sampled; well dry DIPE = Diisopropyl Ether. NSFP = Not Sampled, free-product p~esent E = Ethylbenzene T = Toluene ETBE = Ethyl Tertiary Butyl Ether TAME = Tertiary Amyl Methyl Ether F-P = Free-Product Thickness TBA = Tertiary Butyl Alcohol GW = Groundwater GW Elevation'corrected for Free Product using formula: GW Elev = Reference Elev -[Depth to Water - (Product Thickness)(O.8)] E2C Remediation, LLC T1-1 Project Number 18018K04 January 21, 2003 TABLE 2 SUMMARY OF HISTORICAL GROUNDWATER ELEVATION DATA. Mr. Fast Service Station 600 Brunda~e Lane, Bakersfield, California TOTAL DEPTH TO ELEVATION WELL ID DATE TOC ELEV. DEPTH GROUNDWATER GW ELEV. CHANGE (feet MSL) (feet BTOC); (feet BTOC) .~ · (feet MSL) (feet) 7/20/95 NM? 4/5/96 NM? ..... _3(27_/9_7_ ............... N__M~ __19_/20~/9_ .8_ ._ NM? 1/11/99 NM? ..... _8/~20/~99__ ......... 40,96 12_./7/99 40,96 3/30/00 .......... 4_6_._3_5___ MW-1 7/3/00 NM? ..... .1_/~/~ 1~ .... 51.73 43.28 350.75 6/4/01 51.80 42.15 351.88 1.13 __ 8_/6_/0_1____ 51.80 40.32 353.71 1.83 12/6/01 51.80 42.32 351.71 -2.00 2/18/02 394,03 52.12 45.80 348.23 -3.48 .... _5/_1_6_/0~2 ......... __52.10 .............41-.5~0 ...... 352.53 4.30 8/21/02 52.11 40.18 353.85 1.32 12/5/02 49.98 43.18 350.85 -3.00 4/5/96 NM? .... 3/--2-~)-~ - NM? .... _10/2_0./_98~ 44,36 1/11/99 44,28 5/12/99 42,76 .......... ENK ........................ . 8/20/99_ ............. 38.61_ 1_0_/_6_/. 9,__9_ ..................... __N/_A 12/7/99 41.47 3~30~00 45.19 MW-2 7/3/00 42.01 1/3/01 ..... .5_4..2~9 ......... 4_3_.3_8 ......... 3__5_1 ._6._3 .......................... 6/4/01 ..... _54,2~9 .............. 4_1 ,._8..2_ .............. 353,19 1,56 8/6/01 54,29 40,12 354,89 1,70 ..... ~1-2/6/~-1- ....... ~5~,~-9- ................... 42.42 ' .......... ~_~5~- -- -2.30 2/18/02 395.01 _.. 5~._2__4_ .......... ........................... 45.49 ................ ~)~-52 ....... :'- -3.07 ___5/__1 _6_/0_2 5_4~..1__2 ~_'1_.0_2_ 3~3~,9_9 .4_..4_7 _._8J_2!./~2_ ........ 54.10 40.86 354.15 0.16 1 2/5/02 51.10 43.09 351.92 -2.23 £2~ ~emecl~atiOn, LLC 18018K04 January21, 2003 TABLE 2 SUMMARY OF HISTORICAL GROUNDWATER ELEVATION DATA Mr. Fast Service Station 600 Brundage Lane, Bakersfield, California ELEVATION TOTAL DEPTH TO GW ELEV. WELL ID DATE TOC ELEV. DEPTH GROUNDWATER CHANGE (feet MSL)' (feet BTOC) (feet BTOC) (feet MSL) (feet) 4/5/96 NM? 10/20/98 45,46 .... i'~-1-/9 (~-- 45.43 ~ - ................. 44.21 .... 5./-1-2~-9-9--- ENK ........... ,~-9~)~ 8/20/99 ........................ : .... 12/7199 .- ......... .42._4~5 3/30/00 46,44 MW-3 . 7~3/00 ' 43.05- 44.21 350.43. 1/3/01 54.80 6/4/01 54.84 42.82 351.82 1.39 -- 5~-4.8~ ................ ~ 1~ 1-~- .......... 353.48 1.66 8/6/01 12/6/01 ..... _54,_8~9 ..... ....... 43,30: 351,34 -2,14 2/18/02 394,64 54,82 46,32 348,32 -3,02 5/16/02 54.80 41.54 353.10 4.78 8/21/02 ..... -~4.8~4 ............... -~16~-~ ........ 353.98 0.88 1 2/5/02 54.82 43.46 351.18 -2.80 4/5~96 N/A ---~)~7-/~---' N/A ........... 10120198 46.17 ................ 45.13 5/1 2/99 ENK 8/20/99 40.74 12/7/99 42,65 ....... 3/30/00 ........... 4~5_;8~2___ __ MW-4 .... -~/3/~'0- '- 43.10 1/3/01 __ 5~4_ '_2~9 ...... 43.80 ~ ........ 350.34 8/6/01 54.12 41.22 352.92 1.86 12/6/01 54.14 42.80 351.34 -1.58 "--~/-18--/~)~"~ 394,14 - 7-5~,:14- ........... ~45':9-§ ....... 348,16 ..... _-.3,~1_8 5/16/02 '54,15 42,54 351,60 3,44 -" ~) 1~0~- ...... ~-~)4:-1-~ ............~0,~ ........ 353,32 1,72 I E2C Remediation, LLC .. T2-2 Project Number 1801BK04 , January21, 2003 TABLE 2 SUMMARY OF HISTORICAL GROUNDWATER ELEVATION DATA Mr. Fast Service Station 600 Brundage Lane, Bakersfield, California TOTAL DEPTH TO ELEVATION WELL ID DATE TOC ELEV. DEPTH GROUNDWATER · GW ELEV. CHANGE (feet MSL) (feet BTOC) (feet BTOC) (feet MSL) (feet) .3/27/97 N/A .... _1_ _0_/20/9.8_'_~ 51.45 1/11/99 51.31 ..... _5_/.12_/9_~ _ _ ENK ' 8/20/99 ' · 42,77 . . ....... 1_.2(7/99_ ............. _4_3_.99 ............. '3/30/00 .. 51.20 7/3/00 - 43.89 MW-5 _ __1/__3/_0 ! ............... 5_.~._0 ~0_ ............. ~44.12 ....... 349.31 6/4/01 ....... ?,40 .................... 4_3,98 ........... 349,45 ......... __0,1~4 ....... '--8/6/~-~- ..... 5_7,_4~0 _- .......... 42,10 351,33 1,88 ~- 12/6/01 57,40 43,16 350,27 -1,06 2/10/02. 393.43 .___57.~40~ ............ _4_~:_4~ ........ 346.95 -0.32 ~2-2/-0~ ' - 57.44 42.02 350.51 3.58 8/21/02 57.38 41.59 351.84 . 1.33 3/27/97 N/A _1_012_.01~98_ 45~.7_0_ 1/11/99 45.63 5/12/99 44.10 ........ ENK __ _8_/20~/_9_9- ........ ~39.~94__ 12/7/99 N/A ..... ..3_/~30/00 ..... 46.61 7/3/00 41.58 6/4/01 ' 53.06 41.30 352.46 1.77 8/6/01 53.16 39.75 354.01 1.55 _ .__1_~.6/_0 !_. _. 53.18 42.14 351.62 -2.39 2/18/02 393.76 -- ~§1:1~~ ............ ~11~ ......... 348.58 -3.04 ..... 5/22/02 53.10 41.23 352.53 3.95 · 8/21/02 53,10 39,30 354,46 1,93 .... i'~5/~": ..... :" -~'~i'~ ........... ~4~0~ .............. 351~ .... -2.75 ' I E2C Remediation, LLC ' T2-3 January 21, 2003 project Number ~ uu i TABLE 2 SUMMAR¥ OF . S OR CAL ROUN WAT R ELeVATiON Mr. Fast Se~ice Station 600 Brunda~e Lane, Bakersfield, California ELEVATION TOTAL DEPTH TO GW ELEV. WELL ID DATE TOC ELEV. DEPTH GROUNDWATER CHANGE (feet MSL) (feet BTOC) (feet BTOC) (feet MSL) (feet) 3/27/97 ............ ~9'~0- "- 1~/-2-0~98- . ......... 4~.~/ .................... 42.51 -~(~?~ ENK ......... ~.~ 8/20/99 --~/~-~- 45.13 3/30/00 ......... _51 .~. --~/-~-'- ., N/A MW-7 1/3/01 · 52.80 45.08 348.55' 6/4/01 53:72 44.52 349.11 0.56 8/6/01 '53.72 42.78 350.85 1.74 -~19~2- .... 393.63 53.70 47.23 346.40 -2.91 5/2~02 ' __..~3.6~ ............. ~3.~J ..... 350.32 3.92 8/21/02 53.71 42.20 351.43 1.11 ___~5/~ ......... 5.3:~0 ................. 4~:48 ......... 349.15 -2.28 7/3/00 ENK 43.42 .... !(~(g!. .... 52-80 43.90 350.05 .... ~/4jg~. .... ' ...... 56~ ................ 4~;~ ............... ~0.%~ ....... 8/6/01 "-~;~ ................. ~'~ '~ ...... 352.37 1.78 ' MW-8 --~-~6/0'~ ..... 50.90 43.18 350.77 -1.60 - ~2- - 393.95 ..... ~0.~ .................. 4-~ ................. 34~,7~ ....... -3.04 .... !_2(~/02- ...... _5~8]. .... 43.95 350.00 -2.89 7/3/00 ENK 44,02 1.(~/Q~ 51.60 45.14 348.91 816101 50.82 42.21 351.84 1.31 ~w-9 - -'~-~/5~ - 5o.72 44.24 349.81 -2.03 ~i~/~5'- 3.4.05 ~"-'5~-.~ .............. ~.~A- ............. ~47~1T .... -2.70 ~}i~0~ .... 50.6~ 4~.92 352.13 5.02 E2C Remediation, LLC pro]uti ~u. ,u~, , ~t) 1BK04 January 21, 2003 TABLE 2 I SUMMARY OF HISTORICAL GROUNDWATER ELEVATION DATA · Mr. Fast Service Station I 600 Brunda~le Lane, Bakersfield, California ELEVATION TOTAL DEPTH TO GW ELEV. WELI~ ID DATE TOC ELEV. DEPTH GROUNDWATER ' CHANGE (feet MSL) (feet BTOC) (feet BTOC) (feet MSL) (feet) I 7/3/00 ENK 45.51 1/3/01 52.50 45.28 347.63 6/4/01 52.34 45.34 347.57 -0.06 -8/6/01 52.34 43.36 349.55 1.98 ........ ...... -0.78 MW-10 2/18~02 392.91 52.32 47.12 345.79 -2.98 5/16/02 52.20 44.94 347.97 2.18 -- -8/-2 ~-/-0~-- ...... 52~. 0~0- .................. -4'~ .~-3- ............. .~ ~-0~- ...... 2.41 12/5/02 52.00 44.88 348.03 -2.35' 713100 ENK 45.75 MW-11 1/3/01 391.35 48.30 44.92 346.43 WELL SILTED UP, CONVERTED INTO VAPOR EXTRACTION WELL 6/4/01" __ _6-_3_'5_2 ................. 5_4.~7_6 8/6/01 391.22 63.52 47.65 343.57 7.11 12/7/01 63.52 45.08 346.14 2.57 MW-11R 2/18/02 63.40 54.63 336.59 -9.55 .... ~/-2.2~- ...... -63~ ~,~ .............. ................. ~ ............... ~,8~6~ ............... 34--'~.~~,- ..... 5.95 I 8/21/02 391.33 63.39 43.02 348.20 5.66 -"-i-2/~/-~'~ ........ -6-~.-~,~ ................... ,~.8~ ............... -~44~,~ ...... -3.80 i 6_/.4_/_0_1 NMFP NMFP NMFP 8/6/01 392.01 NMFP NMFP NMFP 12/7/01' 44.78 347.23 51.65 340.41 -6.87 I MW-12 2/19~02 ...................... 5/23/02 43.71 348.35 7.94 .... ~-/~-/0--2--'- 392.06 -- ~-4~8-9 ............... 42.7--~- ......... 349.32 0.97 ...................................... ~.0~- ............ 347.04 -2.28 1 2/5/02 64.88 ......................... 6~4~01 65.40 58.10 334.55 8/6/01 392.65 65.40 . 50.97 341.68 7.13 I '-- ~1-~:'7~ i ......... 6--5.~- .............. ~).5--~ ....................... ~ 4~'i~-~- .......... 1.45 2/19~02 ...... 6_5_.3_8 ............ __5_7_: 4_3_ MW-13 5/23102 66.10 · 58.70 333.30 -1.27 I ---8~ i'~'02"- 392.00 65.38 47.65 344.35 11.05 12/5/02 .... _6~:36 .... 48.70 343.30 ! I E2C Remediation, LLC '. ~ Pre ect Number 1801BK04 January 21, 2003 I TABLE 2 SUMMARY OF HISTORICAL GROUNDWATER ELEVATION DATA · Mr. Fast Service station I 600 Brunda~le Lane, Bakersfield, California TOTAL DEPTH TO ELEVATION WELL ID 'DATE TOC ELEV. DEPTH GROUNDWATER GW ELEV. CHANGE I (feet MSL) (feet BTOC) (feet BTOC) (feet MS'L) (feet) 6/4/01 .... 7_7:_0_0_ ............... 6_9_:_88 ........... 3_2.~1_:~_9 8/6/01 391,87 76,90 ' 68,41 323,46 .1~.47_ i 2/7/01 71~.92 68.50 323.37 -0.09 2/18/02 76:98 69.30 1322.35 -0.80 MW-14 5/23/02 ..... 7~i-48 ..... -6'9~50 . 322.15- -0.2~ .... I 8/21/02 391,65 78,96 .... 68,70," :~22,95, '" 0,6~' 12/5/02 .... 78,96 68,33 323,32 ' 0,37 m 1~_/01_ ......... .8_.7_:_24 ................ d_~ ........... - .... ~-~ ..... . _. 2~/_1_8__/_02 .... __8.~:24 ............... d~_ - ....... 5/22/02 87,18 dry ........ MW-15D ................ 390,72 i ._. 8/_2_ 1J0~2 ...... _8___7_._1__8 ............ dw_. ...................... -T:"7_'.'_ ._ 1.~/5~02 ..... _.8_7.:_1_8 ............... _cl_w .................... 12/7/01 73.24 70.72 820.03 I 2/18/02 73.30 . dry ........ MW-lSS 5/22/02 -- 390,75 ...... ?~:_2__2 .........._7.Q,_0_0 .............. ~_2_0.:.75_: 8/21/02 73,25 69,26 321.49 0,74 1 2/5!.0...2_ ....... 73.1_5 .......... ~_9.7.1_. __ 32! .04 -0.45 12/7/01 79.10 dry ........ . _ I ____2/___18_ !0.__2 79_.._~_2 .................. _C!. ~. ........ ' ....... . ...... MW-16 5/22/02 390.97' 78.55 dry 8/2.~02 ........ ?~:~0 :~ii!--.'-~'"i' 'di~i--. I 1 2/5/02 79.00 ...... d__.ry 12/7/01 91,26 dry ........ I 2/18/02 _., ~ 1~._2_0_ ............. d _r)/.. - ....... . MW.17D 5/22/02 390.91 -, .9_1..00 .......... dry ........ 8/21/02 91.05 dry ........ i 1.2(_5!02' ........ 9! '22 ....... drT.~ - ....... E2C Remediation, L'LC T2-6 Project Number 1801BK04 January21, 2003 TABLE. 2 · SUMMARY OF HISTORICAL GROUNDWATER ELEVATION DATA Mr. Fast Service Station 600 Brundage Lane, Bakersfield, California ELEVATION TOTAL DEPTH TO GW ELEV. WELL ID DATE TOC ELEV. DEPTH GROUNDWATER CHANGE (feet MSL) (feet BTOC) (feet BTOC) (feet MSL) (feet) 12/7/01 ...... 8_!.:_02- .................. __5_7.1 _4_ ................. :._;` _3_3_3:_6_0_ ....................... 2/18/02 79.78 61.50 329.24 -4.36 MW-17S 5/22/02 390.74 79.65 73.98 316.76 -12.48 .... ~/-2~ '/-0~-I ....... 7~9~'~- ............... ~9~- ................. 3~-2~'8-i ........ 16.05 .~1_2/5/.0_2 .... _7__9:_6_5_ ......... 57.82 332.92 0.11 118.80 114.56 _8/_2!.~/0~___ MW-18 12/5/02 ,. 118.75 114.40 ........................................... I Notes: avg. elev. change -2.21 · Elev, = Elevation ENK = Elevation not known prior to January 2001 I GW = Groundwater NMFP = Not measured, 'greater than 30" of free-product N/S = Not surveyed (?) I Top of Casing Elevations are measured at the north side of casing and referenced to mean sea level Groundwater Elevations- are not corrected for product thickness before 01/03/01 Groundwater elevations after 01/03/01 are based on Benchmark on canal abutment ! I E2C Remediation, LLC T2-7 Project Number 1801BK04 Januar./ 21, 2003 TA[BLE 3 SUMMARY OF HISTORICAL GROUNDWATER ANALYTICAL DATA MR. FAST SERVICE STATION · 600 Brundage Lane, Bakersfield, California B I T I E / X I TPHg ITPHdl TBA I MtBE I DIPE, ETBE TAME WELL ID DATE ....... ............................................................................................................................................................................................................... ~- . .~ ; ........ I ...................... I ...................... (pg/L) ?/20/9s 4,200 ~ ~ 3,000 ND 40,000 329,000 NA NA NA NA NA NA ~ _~.9/~0~S~ NS~. _.MS?~ ........ ~S~P__~ ~. NS~. .... ~S?~ ..... N~ N~ N~ NA N~ N~ ................................................................................. 1/11/99 ' "~S'F~~ NSFP NSFP NSFP NSFP NA NA NA NA NA' NA 8/20/99 ~S~A- 3/30/00 NSFP NSFP NSFP NSFP NSFP NA NA NA ...... ~X .......... N~ ...... ~ ...... ~ ~ ...... 1/3/01 (Oup) nd<20 710 1,400 18 17,930 NA nd<200 nd<20 nd<20 nd<20 nd<20 ~ 8/02 NSFP NSFP NSFP NSFP NSFP "5/i 6/~2- .... ~d ~-~:5 8/21/02 nd<0.5 700 55 385 42 000 NA nd<2.5 nd<0.5 nd<0.5 nd<0.5 nd<0.5 E2C Remediation, LLC T3-1 Project Number 1801BK04 January 21, 2003 · TA~BLE'3 SUMMARy OF HISTORICAL GROUNDWATER ANALYTICAL DATA · MR. FAST SERVICE STATION 600 Brundage Lane Bakersfield, California I B I T I E / X TPHg I TPHd I TBA I MtBE I DIPE I ETBE I TAME WELL ID DATE , ~ , ' - (#g/L) .. .... _4/~5__/~ _6 _,' ..... _<?_.3 .......... <:.3 ..........<_0::3_ .... <.03 <50.0 NA NA NA NA' NA NA 3/27/97 1.0 6.2 0.83 4.5 44 · NA NA NA NA NA NA '--~6~2-0~8- " ~6:,~ ........... ~6:-,~ ........ ~-5- .......... ~-0~5 ...... ~5-(~ .......... N'A- .... NA --~-'~-0~-~ .... NA NA NA :'- i-~ ........ <0:'~' .... : ...... ~6:~ ......... ~75- ........ ~07; ............... <55, .... ' - -~J2-0]e~ ........ : ~6:-~- ........ ~:~- ....... -<-0:3 ......... ~-.~- ...... ~5~6 ...... :--~A- - -- NA : 3/30/00 <0.3 <0.3 <0.3 <0.6 <500 NA NA' <0.5 NA NA NA '~:~i00- ....... ~'6.5 ...... ~)-:-~ ........ <0:~'"i ....... i ..... ~-0:~ .... '" -~6-~ -~' N,~, ......... ~-/~ ....... ~.-5 NA NA NA~ MW-2 i-~)~)'~ ....... n~l~6:~0 '-i~d<0:-,~-I~ .... :r~l-~:5-(~ ..... ~,~-~:.~).~ ........ nd~6- .......... ~- ...... nd~-- --~d-~:-5-0 ...... n-d<--0-.-56'' -r~d:~0:-5-~'- n~d~):,~o- "_ ~/~0~1' ...._ . "~:',~0- ' ._.i.n.'_d'~'.0_-:~~ . ._nd:<-o~i~? .. -'nd~0:~-0- ...... ~l~-50 ..... · . 6_/_4./.0! _ _ nd<0.5 nd<0.5 nd<0.5 '--r~-<0:5 ....... n(~?)6 ......... ~IA ..... 816101 nd<0.5 nd<0.5 nd<0.5 nd<0.5 nd<50 NA nd<2.5 nd<0.5 nd<0.5 nd<0.5 nd<0.5 i2/6/Oi' r~d<0:~ '--~:'5~ ....... na-~6:5 - "-nd~6-:~ ......... -96 .......... N~,- ...... -n~-.~ ...... n-~-~-0:5- ..... -~-~6z ..... ~ ~1~6:,~- ...... ~-<0:-5 5/16/02 1.6 58 1.0 3~;:~ ...... ~,7-0 ............... ~-,~, ...... n~:,5 ........ ~d<0.~' ...... ~-d-~.5 .... 'r~ ~6:-5 .... -~0~-5'- 8121102 1.2 5.2 1.7 . 5.0 390 NA nd<2.5 nd<0.5 nd<0.5 nd<0.5 nd<0 5 : ~, · - ,.: - . ............ . ........................................................... : ............................................................. : ..... E2C Remediation, LLC T3-2 Project Number 1801BK04 dal lU~lly ~: I, ZUU,..1 TABLE 3 SUMMARY OF HISTORICAL GROUNDWATER ANALYTICAL DATA MR. FAST SERVICE STATION 600 Brundage Lane Bakersfield, California B m E X TPHg TPHd TeA MtBE DIPE ETBE ....... T...A. ......... w~,~,D D^~.......................... I ......................... J ......................... J ......................... I ......................... l ...................... l ....................... ] ........................ I .................... I ................ I M~ · ~g/L) 4/5/96 41 42 35 3,000 00 8,600 NA NA NA NA NA NA 1/11/99 40 16.00 0.60 180 8,200 "~IA ......... hA .......... 65'i~ N'A ...... N-Al ........ NA-' ' 5)~"~/-g'~'- 8'i~ ...... ~(~[3- .... ~.~:~ ......... T ~-.j ....... ~,3(~) .......... ~A ...... ~-A= ....... -69.-4 ..... ~, 10/6/99 <0.3 <0.3 <0.3 <0.6 --- ~-0~) ...... -NA .............. ~- ....... ~-~- ........ N~- ....... ~I-A' .............. h-~ ..... '1'2j7~-,~'9 ' ~0.3 <013 ~0 3- ' '-1.~3~8 ...... -<~5"l~b ~'A- ....... -NA ........... ~:1-.~)- .......... 3/~0/00' ' ' 1:04 .... ~)-.06 .... <0:3 ........ 8~16~ ......... ~-;6~0 ...... -NA- ......... I~, ........... -;'6:~-' -:~i3/6~- .... --~50:0 ' ~-61'~ = ..... ;~):~ ......... 7<~-:~ ............. ;~-6 ....... ~hA ...... =-~A ......... ;~':§- ........ ~-A- -- ~-~i ......... ~, - ' ..... 6/470-~ ......... :<~:0- ..... ~Sio- .......... :~5-.'6 ....... <5.(~ .......... -3-~3 ........ NA ............ nd-<2-.$ ...... n--d-<-0.5' ........ ~'d<o.-~ ..... ~a~):~ ..... ~-~0.~--' dup <5.0 <5.0 <5.0 ~5.0 388 NA nd<2.5 nd<0.5 nd<0.5 nd<0.5 nd<0.5 " 8)6)01 nde<of5 "nd<~'.5 - nci<O:~' "n~<o.5 ....... n5<-5o i4A ...... ~d~-27, ........ ~d~'6.5-': ..... n-~i:~-o:$ "~dJbt~':-'n~'O.-$-' ' 12/6/01 nd<0.5 1.06 nd<0.5 nd<0.5 515 NA nd<2.5 nd<0.5 nd<0.5 nd<0.5 nd<0.5 dup nd<0.5 0.92 nd<0.5 nd<0.5 380 NA nd<2 5 nd<0.5 nd<0.5 nd<Of5 nd<O 5 2/18/°2 19 .... 55 t~-I~' 25 ....... i:1-~0 ...... '-NA ...... "-"~-2~5 ..... ~<0~-5 5)16102 ..... nd<O:5 ..... nc~<O.~" .... nd'~-°i5 .... n~';'~i~ ......... ~i~0 ....... N-~ ......... n~l-~2~5 ......... ~d~-.-5'-' ~-~-~-5 E2C Remediation, LLC ~ T3-3 Project Number 1801BK04 Januar/ 21, 2003 TABLE 3 SUMMARY OF HISTORICAL GROUNDWATER ANALYTICAL DATA MR. FAST SERVICE STATION .. 600 Brundage Lane *~ Bakersfield, California B I T I E ! X 'l TPHg I TPHd I TBA I MtBE DIPE I ETBE I TAME WELL ID DATE ........................................................................................................... (pg/L) 4/5/96 <0.3 <0.3 0.75 .260 1,800 NA NA NA NA ' NA NA 3/27/97 2.00 20.0 1.10 9.8 340 NA ,NA NA · NA NA NA * 'i0/~0/98 :1-5 ' i-/~"i/9~ ' .... <6.5 MW:4 7/3/00 <0.5 <0.5 <0.5 ' <0.~ ....... -~0 ....... ~ ............ ~A ....... ~b~' ........ ~'~ .......... ~ ........ -N~ ....... 3/N01 nd<0.50 nd<0.50 nd<0.50 nd<0.50 ~d~ ..... N~ ~18/02 54 230 4.7 225 200' NA nd<2.5 nd<0 5 nd<0.5 nd<0 5 nd~0~-5- ' ....... N5/02 j nd<O'5 nd<0.5 nd<0.5 0.6 110 NA nd<2.5 nd<O 5 nd<0.5 nd<O 5 '~0~5" E2C Remediation, LLC T3-4 Project Number 1801BK04 Janu,=u, ~ ,, 2003 TABLE 3 SUMMARY OF HISTORICAL GROUNDWATER ANALYTICAL DATA MR. FAST SERVICE STATION 600 Brundage Lane Bakersfield, California I B I T I E / x I TPHg ITPHdl TBA I MtBE IDIPE ETBE TAME WELL ID DATE .................................................................................................................................................................................................................. ;....I ..................... .I ..................... · ~g/L) 3/27/97 8.8 32 3.6 29 320 NA NA .... NA NA NA ~_NA 1/11/99 <0.5 3.9 <0.5 1.50 <50 NA NA .... -~0-.~- ..... -I~ ............ ~iA .......... I~ 12/7/99 <0.3 ._ <0.3 <0.3 <0.6 . <500 NA NA '-'<1.0 NA NA I: ...... _NA ..... 7~3~00 <0.5 <0.5 <0.5 <0.5 <50 NA ........ :"i~,- ............... -<0.-~' ........... N-~, .......... N,~ ............. NX ...... 5/22/02 nd<0.5 nd<0.5 nd<0.5 20 220 NA nd<2.5 ' nd<0.5 -n~-O~5 ..... -~:~-(~:5"-: ':-r:i~l~-O:~-'- E2C Remediation, LLC T3-5 .Project Number 1801BK04 , January21, 2003 . ~' TABLE 3 .. , SUMMARY OF HISTORICAL GROUNDWATER ANALYTICAL DATA MR. FAST SERVICE STATION 600 Brundage Lane Bakersfield, California - I B I T I E ! X I TPHg I TpHd · TBA I. MtBE I DIPE ETBE I TAME WELL ID DATE r .......................... : .............................................................................................................. '1" ........................................................................ ...................................................... · . I ' · . ~g/) ' .. . 3/27/97 0.98 5.90 0.92 5.80 60.00 NA NA NA NA NA NA · -' ~'0/~(~)98 ~0.5~ ..... <0~5- '~ ~-,~ ...... ~J~ ........... -~) ......... ~N~ ~i-i/~9 '<5~:0 - 5.~0' ......................................................................................................................... <0.5 2.80 <50 NA NA <0.5 NA NA NA 8/20/99 ' ' ~'0~ ..... :'~'0~ ....... ~ -~[6- ........... ~0- ........ . .3(~0~_ ..... nd~Q.5~._ ~d~g:50. _. gd~.0.-~ ....... ~d~0~_~ . = nd<50 NA nd<5 nd<0.50 nd<0.50 nd<0.50 nd<0.50 6/4/01 ........ nd<0.5 nd<0.5 nd<0.5 nd<0.5, nd<S6 ....... -N~ ........ n~';5;~ ..... Bd;0-;~ ....... ~;b.% ...... n'a;b;'~ ...... B~;o~ 1~6/01 6.41 270 77 255 2 150 NA nd<2.5 nd<0.5 nd<0.5 nd<0.5 nd<0.5 ~18/02 nd<0.5 5.8 nd<0.5 25 150 ' NA nd<2.5 nd<0.5 ' 8/~)02' 1.9 7.~ ' ' 0.7 5.4 -66 ....... N~' ~, nd<2~5 .... ~'<0~5 ..... ~-~0~5' ~n'd<-0~'~ .... n~-0.~-" E2C Remediation, .LLC ' T3-6 Project Number 1801BK04 . January 21, 2003 I' .' TA:BLE3 · SUMMARY OF HISTORICAL GROUNDWATER ANALYTICAL DATA MR. FAST SERVICE STATION 600 Brundage Lane · Bakersfield, California l B I T I E / X i TPHg TPHd I TBA I MtBE I DIPE I ETBE TAME WELL...ID DATE I' ' ' ' '": ................................................................. (pg/L) : ...................................... . . 3/~2_7_/_97_ _2,4~0_ .... 24_g_0_0 .......... 2 300 14,000 140,000 NA NA .... NA NA NA 10/20/98 110 25 000 3,500 27,000 150,000 NA NA 150 NA NA -~---~, .... 1/11/99 220 31,000 . 4,200 31,000 120 000 NA NA 380 NA NA " ' ' NA 5/12/99 NSFP NSFP . NSFP NSFP NSFP . NA NA NSFP NA NA NA 8!20/9.9 ..... ~SE? ._NSF'? NSFP NSFP NSFP NA NSFP 12/7/99 NSFP NSFP .... ~-F~P ........ Ns~='F; ..... ~N Si~-P- ........ ~1~ ....... ~ .......... ~,~Si~-i~ ............................ .......... 3/30/00 NSFP NSFP NSFP NSFP NSFP NA NSFP 7/3/00 ...................... NSFP - NSFP N_S_EP ....... NS_F? :_ ....... N_S_F"_? ........N_A .................................... NSFP . _:1/3/_0/~ ..... NSF_P' Ns. Fp .... NS.FP .. _ N._S.FP '_ .... ~_S__F? ........ NA ........ _N_S_FP_ ........... NSF?_ ...... ._N_S_Fp ..... _NS_F? ........ __N_;_SFp .... MW-7 3/2/0! . <~20 9,400 . 4:1.09.. 28:090 ..... _24,.9..40 ..... _N_A .......... ~.2_9o ........ <.2_0_ 6/-4/0! <50'0 . _5;7-~O_ ....... 3,5_9_0 ..... !3,230 87,960 NA <250.0 ' <50.O <50.0 <50.0 <50.0 8/6/01 ' <50.0 1,780 2 330 10~(~'- ·--~5,5(~)- .......... ~, .... :- <2-~:~3- .... ~50:-O ........ ~)01~ .... <-50:-0 ...... -~):~-- ._ 1__2~_../pl .: nd_.<_0.5 2 3:1_~ 1_,12_o_ .......... _8_,29_o. ..... _4_2_835 ........ N__.A ......... _nd~:_5_ ........ n_d_<o._5- ....... n__d_<p.S. .... :..nd_<_0_.~... __n_d<~O_.5_' ....~!_9/_02 .... NS~p_ ..... NSF'P_... NSF_P_ ........ .N_S EP_ ..... _N_SFP ....... ~N _S_ _F__P NS_F_P_: ..... .N__S~p ...... _N___S_F'_.P- ...... N~_F_p ....... N_~F_F,__ 5/22/02 1.8 . 300 nd<0.5 3,120 31,500 NA nd<2.5 nd<0.5 nd<0.5 nd<0.5 nd<0.5 '.. _d~P .... . _n~ _<0.5- ....... '4_4_0 ...... n_d__<_.0_:~ ....... 3_37_0_ ...... 35_,00_0_ ...... N__A ............ n__d__<_2._5- ....... n_d__<___0._5 ........ n d~<_0: _5. ....... _nd_<_o_.._5~ .... n_ d_<_0.5_ .... ....W.2_1/02 ...... . nd__<_0.5 . 8_10_ ........ 8~10._ .... ".___.5,650 94,000 NA nd<2.5 nd<0.5 nd<0.5 nd<0.5 nd<0.5 12/5/02 nd<0.5 1,180 4,260 4,6;~-0- ...... ~,9(~ .............. -NA -'- - ':-n~l-~-2T5 ......... r~d'~0:~ ....... n-~i~:~ .... ~d~:~5 ...... r~):-5-' E2C Remediationl LLC T3-7 Project Number 1801BK04 January 21, 2003 TABLE 3 SUMMARY OF HISTORICAL GROUNDWATER ANALYTICAL DATA MR. FAST SERVICE STATION 600 Brundage Lane Bakersfield, California l a I m' I E / X I TPHg I TPHdl TS^ IMtBEI D,PE I ETBE I TAME '. (pg/L) 7/3/00 820 64,000 6,300 . 73,000 260,000 N^ NA 550 N^ NA NA ~' ~/6~ ........ ~ ...... '~S~6~- ........ ~0do: ..... ~6.~ ........ ~0~i-o ...... ~ ....... ~---~--~ -'~6~6 ....... ~ ...... ~ ..................... 3/H01 34 53,000 4,000 26,000 34,280 NA <2,000 <200 <200 <200 <200 dup <200 · 48,000 4,100 26,000 33,610 NA <2,000 <200 <200 <200 <200 ~.. 6/4/01 nd<50.0 43,560 3,770 . 14,760 64,320 NA nd<250.0 nd<50.0 nd<50.0 nd<50.0 nd<50.0 '"~)~-~ ....... ~d~5~ .... 4~-~ ..... ~-~2~ .......... ~ ...... ~,~ ........ N~ .... ~<~o.o ~-~ ..... ~'-- ~-~'0~-'"-~- , MW-8 1~6/01 nd<50.0 31,075 5,160 18,650 107,335 NA nd<250.0 nd<50.0 nd<50.0 nd<50.0 nd<50.0 ' -' ~i'8i0~ ...... 0~'~ ~-'~06 ..... ~,~i-0 ........ ~;~0 ........ ~,~66 ...... ~A-~ ---'-~<-~.~- ....... ~d~-6.~ -'-~-0'.5'.-' nd~0.~ ...... .' ' 5~i-6~ nd<0~ 6~"~'-' 1-~8~0 ......... -4~-6~TM~-00 -'-~- -~<--~.~ -~n=~- nd<-0.~-- nd<0.5 nd<0.5 1H6/02 nd<0.5 19,900 1,270 14,380 54,000 NA nd<2.5 · nd<0.5 nd<0.5 nd<0.5 - nd<0.5 . 7/3/00 <0.5 <0.5 <0.5 <0.5 <50 NA NA <0.5 NA NA NA · ~ ~/~0~ dd<0~6 n~6'.56 nd-~o~50 ..... "~o~50 ........ n~6:- ":h~ ........ ~a-<~--' ,~J6~b .... n'~;~'~6' .... n~;0~6-'-""n~;'~5~- ," ' 3)~°i -'~d<0'.50 ~d~-~.50- '~'d~.5o ...... nd;~;~-~ .... h~<-5-0 ......... h-~ ........ ~-~- ...... -~-~7~ .... n~o~-~-- n-~-~-~b- ~d~-- · :' MW-9 1~6/01 32.9 555 ~05 425. 2 65o NA nd<2.5 ' ".-~-;~5' - -~-~.5- .... ~'~--~0~5- ...... ~d<0.5-- H18/02 7.3 10 nd <0.5 79 380 NA nd<2.5 nd.<0.5 nd <0.5 nd <0.5 nd<0.5 ;':.. ..... ~'/-i-~/02 ..... .... '5;'~ ...... 8~ ........... -6;~ .......... ~ ............... ~ ......... ~ ~;~ .... ~-;b~:'--~'~-;~;~'~ ~-d-;0~ ..... -"d<0.~-- . ~/2!.(~2 ....... !,8 ....~.9 ............ ~.~. ........... ~S_ .............. 59 ......... NA ........ nd~._ ~.9~_~. ..... OP~ _ _ o.d~_0.5 ....... ~d~p~_. 1H5/02 .... nd<0.5 nd<0.5 2.2 5.3 · nd<50 NA nd<2.5 nd<0.5 nd<0.5 nd<0.5 nd<0.5 E2C Remediation, LLC T3-8 . . January 21, 2003 TABLE 3 SUMMARy OF HISTORICAL GROUNDWATER ANALYTICAL DATA .. MR. FAST SERVICE STATION 600 Brundage Lane Bakersfield, California B T E X TPH TPHd TBA wE,, ~D [~^'rE .......................... 1 ......................... J .................... J ......... g ~g/L) 7/3/00 <0.5 <0.5 <0.5 <0.5· <50 NA NA <0.5 ' NA NA NA -' '-~')3)0-1 ........ nd<~-~CJ .... nd-~O~(~ .... nd~l~.5~ ...... n~o~o ...... ~d~§-O ..... -N~'--:'- nd-~..~-- nd-<~5~- %'d'~3.~ .... -~5'0- ~d~-.5~-- MW'10 1N6/01 4.69 210 65 ' 230 1,735 NA 7/3/00 <0.5 <0.5 <0.5 <0.5 <50.0 NA NA <0 5 NA NA NA 6/4/01 540 11 980. 1,390 7,230 54,410 <50 nd<250.0 nd<50.0 nd<50.0 nd<50.0 nd<50.O 8/6/01 866 29,850 2,425 13 68-6 ..... ~7~'~ ........ ~A MW-11R . duplicate 140 1,320 · 1,063 2 490 28,000 NA nd<2.5 nd<0 5 nd<0.5 nd<0 5 nde0.5 E2C Reme diation, LLC T3-9 Project Number 1801BK04 January21, 2003 TABLE 3 SUMMARY OF HISTORICAL GROUNDWATER ANALYTICAL DATA. MR. FAST SERVICE STATION 600 Brundage.Lane Bakersfield, California l a I T I E / X mPHg I TPHdl TaA MtaE D PE ETBE TAME WELL ID DATE I . ~g/L) ..................................... . ................................................................. . 6/4/01 NSFP NSFP NSFP NSFP NSFP NSFP NSFP NSFP NSFP NSFP NSFP .... 8/6~:1 "' N~i~P .... -~-~P ......... -I~-IS ....... -N~ ....... -~-I~- ...... -N~S-F~- .... -NTIS_ --~SFP .... -I~-SF~- ........ NSI~-~- NSFP 12/7/01 NSFP NSFP NSFP NSFP NSFP NSFP NSFP NSFP ..... ~[:~-'- NSFP ~' NSFP MW-12 2/19/02 NSFP NSFP - -NsI~ ......... ~1~-~-~ ......... I~'~'1~- .... ~ N-~F-I~--- -~ -~-S-~'- .......... N~s-~ ......... ~ '~s ~'-~ ...... ~s~l~ ..... ~iFI5 - 5/23/o2 nd<(~:~' 910 970 10,910 78,000 NA nd<2.5 nd<0.5 nd<0.5 nd<0.5 nd<0.5 8/22/02 .d<O.5 685 nd_<_0.5_' 12/5/02 nd<0.5 430 1,500 5 200 7,910 NA nd<2.5 . nd<0.5 nd<0.5 nd<0.5 nd<0.5 6/4/01 nd<50.0 nd<50.0 nd<50.0 . nd<50.0 5,580 NA nd<250.0 nd<50.0 nd<50.0 nd<50.0 nd<50..0 · 8)6-~O:l -' 'N-SFP ...... N§F-IS' ...... N"S'IEiS .... ~;~-IS ...... ~'F-IS ..... -NS-FP. .... ~I~-FP .......... ~SFP- ........ ~ISF~S .... ~§-~ ..... ~-,~-I~,-- 1~/7'/01 ..... 115 6,550 ' .............................. 4,690 14,815 178,900 '"'NA nd<2.5 nd<0.5 nd<0.5 nd<0.5 nd<0.5 ~J19/0'2 N'~-is'P- -- N'SF-P ...... ~sFp-' - - -h'~:~' ' - ~l~-IS ...... 'I~-IsP- ---~i~s-~:-~ ..... ~-SFI~ .... i~lSl~lS .... N~,~-iS- -~'~-ISiS-'- MW-13 5/23/02 NSFP NSFP NSFP NSFP NSFP NSFP NSFP NSFP 'NSFP NSFP NSFP 8/22/02__ nd<40 ' 1,~490 8~-0' '2,900 ---1'371000 ~'-N,~ r~d'~20'0 '- ' ~d<~O- ~d~40 -'nd~40- .... nd<4~-" 12/6/02 14 7~020 .1,980 8,420 ' - 4(~,'900 - NA . n~i<-~.5 '-'nd<o.5 'nd~0.5 nd<0~5' "nc~0.5- duplicate 20 7,660 5,520 9,110 38,000 NA nd<2.5 nd<0.5 nd<0.5 nd<0.5 nd<015 6/4/01 871 ' 1,494 371 1,057 9,240 <50 <25.0 <5.0 8/6/01 160 187 150 138 -- 10-4 NA .... <~5'.~)"' <510 "<5.0 <5.0 '" <5~O Duplicate 152 114' 137 113 82 ' ' NA <25.0 <5.0 <5.0 <5 0 <5.0 ' i~..~.~/_~1i -'65 ' nd<6.5- ~;5 ' ' ~1:~'~- .... 2;~00 ......... 'l;q'~ '"~l~ .... ~a;~5 ...... nd'<'6':'5 ..... n'a<0.5 .... ~l-;'i~-5'" MW-14 2/18/o2 2 ' 8~2- ' -- 37 ' ~1-1 ........ 5~0 .......... N-~ .......... i'~)0- ........ 'r{~<-(~.~ ' -n-d;0.5 - ."nd;~-5- ' "~d'4~);~'-- 5/23/02 330 13,400 1,240 12,320 34,000 NA nd<2.5 nd<0.5 nd<0.5 nd<0.5 nd<0.5 8/22/02 19 13 21 83 2,040 NA nd<2.5'' nd<0.5 nd<0.5 nd<0.5 nd<0.5 duPl!c_a__te. !8_ ~1.0 .. 19 87 2,120 NA nd<2.5 nd<0.5 nd<0.5 nd<0.5 nd<0.5 12J5/02 .. 3.1 18 'iG ....... :l'O:l .......... 1;'1~6~)- ....... '~,~, ........... r~-cl-<2.5- ..... ¥ r~i'<-o~-5 .... n~d-~:'0~5- .... -n~<-o~-~ - nd<0.5 E2C Remediation, LLC T3-10. · Project Number 1801BK04 Jan,,=,~ ,~,, 2003 TABLE 3 SUMMARY OF HISTORICAL GROUNDWATER ANALYTICAL DATA .~ MR. FAST SERVICE STATION 600 Brundage Lane *, Bakersfield, California · WELLID DATE l B I T I ' E / X TPHg TPHd TBA MtBE DIPE ETBE TAME (pg/L) · 12/7/01 · NSWD NSWD NSWD NSWD NSWD , NSWD NSWD NSWD NSWD 'NSWD NSWD ' -' '2)i~-~ .... N-~'~D- .... '~W~' N-SW~D ........ N-S~- ........ N.~[::)----I~$~I~----N~v~D- ...... ~S-~/[~ .... ~E~v~/-D ...... ~'~-~/-[~: .... ~S~-- ' 5/~2~02 ..... : -~WD- .... :-I~'~-WD ........ ~-S~/-I~ ........ ~§W~ .... ~V~D- .... ~-~6 ...... ~-S~v~ ....... ~S~/-D~=' -'-~/~D ....... N~---~W~'- MW-lSD - 8-)~-2/-62 .... NS'~D N-§~D- i~'~'~D ........ ~S-~D ........... -I~SWb ....... ~-sWD ....... ~'~v~ ........ ~W~ .... ~I-§WD ---I~/D- ...... N-S~D- ' 12/7/01 nd<0.5 nd<0.5 nd<0.5 nd<0.5 85 NA nd<2.5 ND ND ND nd<0.5 Mw-15s -512~j0-2 .... ~-5 :- 4,670'- i "~d~:~ ...... -3~,-7-~-0 ......... ~-~ ..... ~- ....... ~d~-.5- ....... ~d~-(~.~ ....... ~d~-~ ~ '-r~0:5 ........ n-d~--- 8/22/02 nd<0.5' nd<0.5 nd<0.5 nd<0.5 nd<50 . NA nd<2.5 nd<0.5 nd<0.5 nd<0.5 nd<0.'5 i'2/5/0~-' ' .'-~-d~0~5 "'i' 'r~l'~-0:5' ~ ......... ~1~i ......... nd;-~'(~ ....... -~ ...... r~):~ ....... ~1-~:5 ...... nd~-~:~ .... ~'d-<0:'~-- i'"-~:~0.5--:' 12/7/01 NSWD NSWD NSWD NSWD NSWD NSWD NSWD NSWD NSWD ' NSWD NSWD 2)'1-8/0~- 'i~S~D '--N~ND' ~l~D- ...... N~N~ .... ~-~s~V-~ ..... 'N~V-~ --"-~s~- ...... N-S-~D ..... ~iS-V~'D ---N-s~'i~- .... '-I~-S~-D-'- 5i~02 -' :' MW-16 8)~02 ...... ~-D- N§~'D ..... ~I~wD ....... ~-s-w[~-: ..... ~-~6-' :"NSW~ ..... i~/-D '-'- -~S-¥~D ......... N~-~) .... N~D ....... ~'~/V~ '- ~ 2~5702 ' 12/7/ol NSWD NSWD NSWD NSWD NSWD NSWD NSWD NSWD NSWD NSWD NSWD ' ~'~-8/0~ ...... N~/V-D ..... N~-WD ........ -N~-5 ..... N~/~b ........ ~I-~/-D '-' N~NE~-'---- ~-~'V~E~-'T '~-[~ .... -~W~ ...... h~U .... -NS-~b-'- MW.17D 5)~2/~)'2 N-S~/'D'"" ! N-sw'i~- .... N~)- .... ................................................................................................. ~_S D · .' 8/22/02 NSWD NSWD NSWD NSWD NSWD '~'~5i02' ' ' N~vD. - ' -~-SW6 ~I~D- ..... ~VD ....... N~/D"-: ..... ~-S~)- ........ i~-[~ ....... -~D --!' ~§~N-[~ .... ~S-V~'D ........ ~i~-~ E2C Remediation, LLC T3-11 : ~ January21, 2003 TABLE 3 ~ SUMMARY OF HISTORICAL GROUNDWATER ANALYTICAL DATA ' MR. FAST SERVICE STATION 600 Brundage Lane .. Bakersfield, California WELL ID DATE l B T I E' X ' TPHg TPHd TBA MtBE DIPE ET · J ................................ ~ I BE TAME / ~. (//g/L) 12/7/01 . nd<0.5 nd<0.5, nd<0.5 nd<0.5 135 NA nd<2 5 nd<0 5 nd<0 5 nd<0 5 n < . . -2/1 ................... I ......................................................................... · · · . d 0 5 ..... ~!0~..~ .nd_<~'_5_ __ nd~_0:5_.. __n.d_<_o.._5__..: _ __n_d._<_.o_._5'- ...... n~<50 'NA ' nd<~.-5 "- ~0:~ ...... :~d-~)-.-,~ ..... ~-d'~):-5-- MW-17S 5/22/02 nd<0.5 nd<0.5 nd<0.5 nd<0 5 ' -r~<-,~) ......... ~-:: ..... ~-d~)~- ....... -n~-6:-~ ....... ~':~- :-"~d~-0.~ ..... 'i~JS-~0~ nd<°:5 ..... n-d~-0:~ ~-d~0:5 .... 7'-n~):5--: ..... 'nd~ ..... :-i~ ...... -n~-<~:-5-- -~n-~:<~.~ .... n-d~.-5 .... ~5- .... ~-~0-.-5- 8/22/02 36 "nd<0.5 4.0 4.5 nd<50 NA "nd<2:5 nd<0 5 nd<0 5 'nd<0.5 nd<0.5 !Notes: Sampling performed by E2C Starting 01/03/01 MTBE analysis by EPA Method 5030/8020 from10/20/98 to 1/3/01 NSWD = Not Sampled this Quarter; well dry MTBE analysis bY EPA Method 8260b from 1/3/01 NSFP = Not sampled this quarter due to presence of free-product Results in micrograms per. liter (/Jg/L) = parts per billion (ppb). NSWS = Not sampled, well dry, casing silted up 12 feet from bottom B= Benzene T = Toluene DIPE = Diisopropyl Ether TAME = Tertiary Amyl Methyl Ether E = Ethylbenzene TBA = Tertiary Butyl Alcohol (a.k.a. tert-butanol) ETBE = Ethyl Tertiary Butyl Ether TPHd --- Total Petroleum Hydrocarbons as Diesel MtBE = Methyl.tertiary-Butyl Ether TPHg = Total Petroleum Hydrocarbons as Gasoline NA = Not analyzed for this compound X =.Total xylenes .. ND = Below Practical Quantitation Limits: BTEX-0.5//g/L, TPHg-50//g/L, and MtBE/DIPE/ETBE/TAME-0.5//g/L; TBA-~.5//g/L E2C Remediation, LLC T3-12 Project Number 1801BKO 1 Januaq, 2'1, 2003 TABLE 4 SUMMARY OF VES MONITORING DATA Mr. Fast Service Station 600 Brundage Lane Bakersfield, California Cumulative Cumulative Inlet Well Well Well Well Dilution '1 Field Field Cumulative Cumulative Cumulative . Date Calendar Operating Operating Flow Chamber Stack VE-2 YE-3 MW-1/VE-4 MW-8/VE-5 Air TPH in TPH out Lbs./Hr. Lbs. Lbs. Gallons · Monitored Days Hours Houm (scfm) % LEL Temp. (°F) Temp· (°F) valve valve valve valve valve (ppmv) (ppmv) Extracted Extracted Destroyed Extracted 4/4/02 0 3485.0 3 261 4 .... _6.5~_- ~ 75'~_ . ~O O_ . O_ . ' ~ *_ _C ..... _9-50 .... _5.:2_ .... 3._4_ ~0_.1_ ..... 1_0 ..... .- ~ 1~5. 4/6/02 I 3507.0 25 264 4 . _6,',','~ 686. 0 . 0 4/6/02 4 3579·0 97 240 4 628 692 C . C O . . .Q.' ,C . 940 .... ~ ...... 3.~ 2"86.5 256 .40.0 4/10/02 6 3624.5 14~.5 313 3 716 722 .., C , C O 0 .... _C_. ~00. _10. 4/15/02 11 3747.1 265.1' 276 3 668 6'~9. . .C . C 0 0 .... C .... -_400 _ __2_ . ~1_~5 . _586.1. . ~5"80 . 90~7 4/~16/02 ~2. 3767.3. 285.3 . 180 ,3 . .6_82 6'~1~ C .C . ~3. .0 . C ......... _3~.0_.. . 1 _0._.~ . .60~,_._9 ..... 599 ..... _9_,3:6_ 4/17/02 13 3789.1 307.1 235 4 676 751 C. C O O ~; 180 ,'..1 .0.6 617.4 611 . 95.5 4/24/02 20 3956.1 474.1 *' 257 3 685 679 C C 0 0 ~', _ 895 . ..6 3.1 1139.7 . .1.1.28 176.3 .. 4/29/02 25 4076.1 594.1 256 3 656 625 C C 0 0 . .C 390_ . 3 .... 1..4 1302.6. . ~:~90~_ ·. 201.5 5/2/02 28 4148.1 666.1 160 3 655 632 PO PO 0 0 ._mC 240 1 · 0.5 1340.2. . 1.327 . · 207~3 . 5/6/02 32 4232.0 750.0 253 3 633 611 PO po . . , 0 O C 200 ·. 0 0.7 1,39-~.9 1384 216·2 5/14/02 40 4426:9 944.9 252 3 .* 631 618 PO PO 0 0 c - 95 0.6 0.3 ~ 1461.4 1447 226·1 5/21/02 , 4'~. 4428.6 946·6 283 3 · 658 615 0 0 0 0 c 300 .. .. _0.4.. 1.2 1463·3 1449 226.,~ 6/4/02 61 4587·9 1105.9 223 :.' 2 624 598 0 O 0 0 c . 300 0.2 0.9 1608,2 1592 248.8 6/7/02 64 4657,9 1175.9 - 208 2 668 612 0 c ' 0 0 c 49 0.2 0.1 1617.9 1602 250.3 6/11/02 68 4752.8 1270.8 234 2 653 619 0 c 0 0 c 56 1.2 0.2 1634.8 1618 252·9 6/17/02 74 4753.5 1271.5 228 3 659 599 0 c 0 0 c 620 0.2 1.9 1636.2 1620 253.1 6/24/02 81~ 4920·0 1438·0 187 3 661 619 0 c 0 o. c 46 0.2 0.1 1655.7 1639 256.1 7/1/02 88 4920.8 1438.08 194 5. 625 667 0 C 0 0 -. ..C 1000 I 2.6 1657.8.. 1641 . 256~4.. 7/10/02 97 5106.1 1624.1 267 4 614 656 0 C O. 0 . C 30 0 0.1 1677.9 1661 259.6 ' 6/12/02 130 5128.1 .16~6.1 281 2 648 605· O C . O O 9/17/02 166 5176·4 "~694.4 '320 2 640 598 O C O O C 49 1 0.2 1691.6 1675 261.7 9/24/02 173 5348.7 1866.7 212 3 630 601 O C O O i C 20 0 0.1 1701,5 1685 263.2 11/10/02,. .220 ..5350..6 1868,8 ~._3~8, 2_ _ 65_3 ~)4 . O C ,O .'. _ PO ...... C . 6_8 0.. _ 0.3 1_7_02.2 ._!685 263.3 11/12/02 222 5377.1 1895·1 241 3 652 611 O C O . O C 52__ 0~ 0,2 1706~7.. . ~1690 264,0 11/22/02 232 5615·5 2133·5 235 ..... 648 609 .O· .. C . . ~ . O ~C 38 0.6 0.1 1735.6 1718 268.5 12/2/02 242 5617.5 2135.5 .310 4 657 625 C C, O O C 120 0 0.5 1736.6 1719 268.6, 12/9/02 249 5657.4 2175.4 300 5 ' 655 597 C C O O ,C _90 .. 0 0.4 1751,3 1734 270.9 Notes: scfm = standard cubic feet )er minute LEL = Lower Exl~losive Limit ppmv = parts per miltion Volbme Lbs./Hr. = pounds p~r hour . O = Valve Open C = Valve Closed · PO = Va ve P~rtialiy. Open , . E2C Remediation: LL C ' Table 4-1 Project Number 1801BK01 January 21, 2003. ~ i TABLE 5 - MASS OF HYDROCARBONS REMOVED BY VES (based on influent concentrations) Mr. Fast Sen/ice Station I· · 600 Brundage Lane Bakersfield, California EndingDateI HCRemoved I CumulativeHCRemovedl InfiuentConcentrations FlowRate MonthlyRUnTime · (lbs/month) (lbs) (ppmv) · (scfm) (days) 05/01/02 1'517 1517 · 678 254 27 . .... 0_6/--0.1_/02 ............ _3_3_9 .......................... 1_8_5_7'_ ................. 209 237 21 . ~ 09/01/02 13 2216 45 300' 3' 1'1/01/02 0.4 2216.4 44 275 0.1 Where: Hydrocarbons Removed (lbs/month) = Influent Concentration (ppmv) X 10-~ X Influent Flow Rate (scfm) X 1 lb-mole/379.5 ft3 X 86 (lb/lb-mole) X 1440 (min/day) X Run Time (days/month) I Cumulative Hydrocarbons Removed (lbs.) '--! Based on Infiuent Concentrations (Since April 2002) 5000 ...~ooo ' - ·--~,3500 o>3OOO .......................................... ~ E i ~:2500 ._= 2000 - - ~ ~1500 i !0o0 . · 500 0 I 04/01/02 05/01/02 05/31/02 06/30/02 07/30/02 08/29/02 09/28/02 10/28/02 11/27/02 12/27/02 TIME I E2C Remediation, LLC Table 5-1 Project Number 1801BKO 1 January 21, 2003 · Average Daily Hydrocarbon Removal Rate (lbs/day) Based· on Influent Concentrations (Since April 2002) 100 90 I 80 ...... ~- ........................ ~ ......................................................... ~ ......................... --~ 70 .......... L ............................. ~ ................. . .................. ~ I ~ 30 ' 20 I 10 I · 0 "1 04/01/02 05/01/02 05/31/02 06/30/02 07/30/02 . 08/29/02 Time (months) I '1 E2C Remediation, LLC Table 5-2 Project Number 180 I BKO 1 January 21, 2003 TABLE 6. MASS OF HYDROCARBONS REMOVED BY VES (based on %LEL) · Mr. Fast Service Station 600 Brundage Lane Bakersfield, California EndingDateI HCRemoved I Cumulative HC Removed LEL . J FlowRatel Monthly Run Time (lbs/month) (lbs) (%) . · (scfm) (days/month) 04/01/02 O. . ............................ ~ .............. 0 . 0 0 Where: ' Influent Concentration assume 100% LEL =13,800 ppmv calculated as hexan~ LEL estimated from difference between oxidizer and stack temperature, i % LEL = approximately 25° F difference Hydrocarbons (lbs/month) = Influent concentration (ppmv) x 10'" X influent flow rate (scfm)· x 1 lb-mole/379.5 cf x 86 lb/lb- mole x 1440 min/day X run time (days/month) Cumulative Hydrocarbons Removed (lbs.) Based on %LEL (Since April 2002) 5000 4000 g3ooo .............................................................................................. 0 I 04/01/02 05/01/02 05/31/02 08/30/02 07/30/02 08/20/02 00~8/02 10~8/02 11/27/02 1~27/02 I E2C Remediation, LLC ~ Table 6-1 Project Number 1801BK01 January 21, 2003 Monthly Hydrocarbons Removed (Ibs./m0nth) Based °n'°/oL-E~ 1200 'l~, · (Since April 2002) . ' . 1000 ....... '-"- 1-'\----: ..... ............................................. :-:--: ...... ...... : ...... : .......... ' .: ....... . /\ ~ ~'7 x ...~ . ,- · ! 400 .......... : ............................. : ............... j,... . .. , . . MonthlY%LEL · * "(Since April 2002) " · '. ! 4.5% '' ~ ' ', 4.0 Yo .....................................:-~ .......... : ............................................. i 3.5Yo t ....... : ................................ ; 2.5% ....................... :- -: .................. [ 0.0% '. -- . ~. ~, 04/01/02 05/01/02 05/31/02 06/30/02 07/30/02 08/29/02 09/28/02 10/28/02 11/27/02 12/27/02 Time E2C Remediation, LLC Table 6-2 Project Number 180 I BK03 Januarv 21. 2003 -- APPENDICES Appendix A Fourth Quarter 2002 Groundwater Purge Data Sheets Appendix B Fourth Quarter 2002 Analytical Laboratory Report ! '1 . EzC Remediation, LLC .. , Appendices Prqiect Number 1801 ~t((2~ Janua~_ 21. 2003 ! APPENDIX A FOurth Quarter 2002 Groundwater Purge Data Sheets I I I E2C Remediation, LLC Appendix A E2C REM EDIATli::)N; LLC WATER QUALITY SAMPLING RECORD Groundwater Scientists :.Environmental Consultants AND VVELL DEYELOPMENT DATA 5300 Woodmere Dr., Suite 105 Bakerslield, CA 93313 SAMPLE ID OR WELL NO:: ' ~/'~/' ~ I DEPTH TO WATER: fl'~, ~ ~1~ ft PROJECT NO.: ~ 90~ ~O---~ ,,. . TOTAL DEPTH OF WELL: ~',~ ft PROJECT NAME: D5 ~ ¢-/'~ .¢ ~' ' WELL DIAMETER: DATE: \ ~.. - ..~ -- (..)?. CASING VOLUME:_ .,i, lO gallons SAMPLEDBY: ~" \IA!.COi,j ~ 't./gb~L METHOD OF PURGING: PURGE CHARACTERISTICS TEMP pH SEC SAMPLE . TI,ME INTAKE RATE CUM. VOL WELL VOL" (F°) (UNITS) (Hmhos/ CONTROL DEPTH (GPM) (GAL) PUMPED cra) No. (COLOR, TURBIDITY, ETC.) pH CALIBRATION / STANDARDIZED . BUFFER SOLUTION pH4.01 I F!lT.0 I pill0.0 WelICapacily: 2"- 0.1632 gallon/lineai' foot ' 4" - 0.6528 gallon/linear fool T~"'~'TP-F~ I I 6" - 1'.4689 gallon/linear foot NSTRUMENT RE,',,OING . . , sp~-c?~c ELEC'~~~ ~-T~O'-~ STANS~,R ~ZA'fFO~ INSTRUMENTR ,, ,,.. ,, ..-.- . I .... ~ ~ "~,~ '~ q . SAMPLED/,T: L~ ~ -O FT. Fli'.IAL DEPTH TO WATER: ~'~, ~, [ ~ FT. 3 CASING VOLUMES I NOTES: --. E2c REMEDIATli:)N, LLC WATER QUALITY SAMPLING RECORD '- Groundwater Scientists: Environmental Consultants AND WELL DEVELOPMENT DATA 5300 Woodmere Dr., Suite 105 Bakersfield, CA 93313 ........... . ......... ..: SAMPLE ID OR WELL NO.: ~v/ ~ '~-- DEPTH TO WATER: k~, o ~ fl PROJECT'No:~ I ~-0[ ~L03 TOTAL DEPTH OF WELL: Si.lO ' ft WELL DIAMETER: ~ "' PROJECT NAME: ~ ~ '~ ~' T ... DATE: .... ~ ~ - ~ ._~ ~ CASING VOLUME: "~ '30 gallons ' SAMPLED BY: ~ ~lA~,~OrJ ~ ~~. METHOD OF PURGING: O ~ ¢~ ...... ~:E~A~TERISTIC~ TEMP pH SEC SAMPLE REM~ TIME INTAKE RATE . CUM. VOL WELL VOL (F°) (UNITS) (pmhos/ CONTROL DEPTH (GPM) (GAL) PUMPED cm) . NO. ' (COLOR, TURBIDLY, ETC.) :H ~RATION / STANDABDIZED BUFF~RSOLUTION , pH4.01 I F:I7.0 [ pill0.0 WellC~pacity:' 2"-0.1632galio~linearfoo' 4" - 0.6528 galloWlinear foot 'INSTRUMENT RE :'.,DING · ~ I 6" - 1.4688 gallo'Minear..., foo[~ ~~CM ~ 25 C" ! 74 718 1413 6868 ' 58640 I INSTRUMENT R SAMPLEO AT: ~ ~ ~. FINAL DEPTH TO WATER: ~] .O % FT. '3 CASING VOLUMES= "~'~¢ ~ ~,, e - NOTES: F:2C REMFDIATION, LLC .- WATER QUALITY SAMPLING RECORD Groundwater Scientists :Environmental Consultants AND WELL DEVELQPMEN-[ DATA 5300 Woodmere Dr., Suite 105 Bakerslield,'CA 93313 . SAMPLE ID OR WELL NO.: ~/ ~ _"~ .. DEPTH TO WATER: i,~.NG ft PROJECT'NO,: ~ ~) 0 ~ ~ 0.~ TOTAl. DEPTH OF WELL: 5H'Y'~'' ft PROJECT NAME: ~ 6' ¢-~ ¢' -i" WELL DIAMETER: ~.-'-' SAMPLEDBY: ~' \-tA!.('OrJ ~ \z/~b,(,.~ METHOD OF PURGING: O(- PURGE CHARACTERiSTiCS"~" ' TEMP pH SEC I SAMPLE TIME INTAKE RATE CUM. VOL WELL VOL (F°) (UNITS) (I.~mhos/ CONTROL DEPTH (GPM) (GAL) PUMPED cra) NO. (COLOR, TURBIDITY, ETC.) pH CALIBRATION / STANDARDIZED 'T~,-'CZ"P'-F~BUFFER SOLUTION pH 4.0~ tl 'F I 7.0 I pH 10.0 Well Capacity: 4"2" -. 0.1'6320.6528 gallon/line;~rgall°n/linear footf°°t INSTRUMENT RE.?..DING I I 6" - 1.4688 gallon/linear foot. S~.E;:i~lc E,:EC'~"~C:*~- CSN~uCTA~CE-CAU.*,~AT~ON / STAN~A.O~ZATION KCL SOLUTION pMHOS / GM @ 25 C~ t 74 718 1413 6868 58640 I INSTRUMENT READING I I I - SAMPLED AT: ~t,..t,.~'-O FT. FINAL DEPTH TO WATER: ~ ~. ~ FT. 3 CASING VOLUMES= ~ -"~"'-~ GALS.' I NOTES: E2C REMEDIATION, LLC WATER QUALITY SAMPLING RECORD '-'-"- Groundwater Scientists: Environ~'nental Consultants . ' AND WELL DEVELOPMENT DATA 5300 Woodmere Dr., Suite 105 Bakersfield, CA 93313 SAMPLE ID OR WELL NO.: [¢~ -- H DEPTH TO WATER: 4 pROjEcT'NO.: ' I ~ O i 6L o3 TOTAL DEPTH OF WELL: 5~-0 ~ ft pROJECT NAME:~ ~ ~. ~ .¢ I WELL DIAMETER: ~" · DATE: ~ ~ - ~ -- O ~ CASING VOLUME: ~'~ 9al~ons sAMpLEDBY: ~ ~IA~.(O;,¢ ~ ~.~ METHOD OF PURGING: ~O ThME INTAKE RATE CUM. VOL WELL VOL (F°) (UNITS) (Fmhos/ CONTROL DEPTH ~ (GPM) (GAL) ' PUMPED cm) NO. (COLOR, TURBIDLY, ETC.) pH CALIBRATION / STANDARDIZED BUFFER SOLUTION pH4.01 F:t7.0 J pill0.0 WallCapacity: 2"- 0.1632 gallowlinear foot T~PI 4* - 0.6528 galloWlinear foot INSTRUMENT RE:'~DING ~ I 6" - 1.48S8 gallo~inear., foot SPECIFIC ELEC¢~I~AL CONDUCTANCE - CALIBRATION / STANDARDIZATION KCE'SOLUTION pMHOS7 cM ~ 25 C~ I 74 ~ 718 1413 6868 58640 INSTRUMENT READING I I I ,,. ~AMPLEOAT: ~- % ~. FI~AL DEPTH TO WATER: ~,O FT. 3CAS NGVO~U~,!5S~ '~ ,~ GALS. I NoTEs: 'E2C REMEDIATION, LLC WATER QUALITY SAMPLING RECORD -'---" Groundwater Scientists: Environmental Consultants AND WELL~ DEVELOPMENT DATA · 5300 Woodmere Dr., Suite 105 Bakersfield, CA 93313 SAMPEE ID OR WELL NO.: ['¢~',/~ --~ .. D~PTH TO WATER: ~'0~ iPROJECT'NO.: ~ ~O~ ~ O~ TOTA~ DEPTH OF WELL: '~;'] Q ft ~PROJECT NAME: ~ ~ F~ .¢ T" WELL DIAMETER: ~" ' DATE: ~ ~' - 5 '-- O ~ C~SING VOLUME: ~-I ~ gal~0ns ISAblPLEDBY: ~ .~lA~Or~ ~ ' U~U~ METHO~ OF PURGING: ' 'PURGE c~ARACTERISTICS ' 'TEMP ~H sec SAMPLE REMARKS TIME ~ INTAKE RATE. CUM. V~L. WELL VOL (F°) (UNITS) (pmhos/ CONTROL · ' DEPTH (GPM) (GAL) PUMPED cra) NO. (COLOR, TURBIDLY, ETC.) ~ ~, ., . . . · . pH CALIBRATION / STANDARDIZED BUFFER SOLUTION pH 4.01 F I 7.0 pH 10.0 Well Capacity: 2" - 0.1632 galloWlinear foot T~F° 4" - 0.6528 galloWlinear foot INSTRUMENT RE.?.,OING [ ~ 6" - 1.4688 gallo~inear foot KCL SOLUTION pMHOS / CM ~ 25 C* I 74 718 1413 6868 58640 INSTRUMENT READING ' i I SAMPLED AT: ~ ~ -O ' ~. FINAL DEPTH TO WATER~ ~ ~' ~ ~ FT. 3 CASING VOLUMES= ~ .%-'~ GALS. I NOTES:' 1 E2C REMEDIATION, LLC WATER QUALITY SAMPLING RECORD Groundwater Scientists: Environmer~tal Consultants AND VVELL DEVELOPMENT DATA 5300 Woodmere Dr. Suite 105 Bakersfield, CA 93313 . SAMPLE ID OR WELL NO.: ~'~/'-r'. ~ . '- DEPTH TO WATER: ~2,O~ ~ . PROJECT'NO.: I ~OI' 6k O3, TOTAL DEPTH'OF WELL: ~-O. ft, · PROJECT NAME:: ~ ~ , FA'~ I WELL DIAMETER: '~" DATE: "~ ~ - 5 -- O ~- CASING VOLUME: ~,7~ 9al~ons SAblPLEOBY: ~ ~lA~,~OrJ ~ ~/~b~ METHOD OF PURGING: ~O PURGE CHARACTERISTICS TEMP pH SEC SAMPLE REMARKS . TIME INTAKE I RATE 'CUM. VOL WELL VOL (F©) (UNITS) (pmhos/ C'ONTROL DEPTH (GPM) (GAL) PUMPEO cm) NO. (COLOR TURBIDLY, ETC.) ,H ~AL~R~T~ON / STANDARDIZED BUFFER SOLUTION pH 4.01 . F:I 7.0 pH 10.0 Well Capacity: 2" - 0.1632 9alloWlinear foot %~F' 4" - 0 6528 ga o~linear foot INSTRUMENT RE?,DING ~ [ . 6" - 1.4688 9a[IoWlinear.... ~f0°t ' SPECIFIC ELECTRILCAL CONDUCTANCE - CALIBRATION / STANDARDIZATION KCL SOLUTION pMHOS / CM ~ 25 C" ~ 74 . 718 1413 6868 58640 TEMP F~ ~ INSTRUMENT READING I I ~ SAMPLED AT: ~ ~ '~ ~. FINAL DEPTH TO WATER: ~ ~, O '~ FT. 3 CASING VOLUMES= GALS. NOTES: , · I E2C REMEDIATION, LLC WATER QUALITY SAMPLING RECORD Groundwater Scieatists: Environmental C°nsultanls - AND WELL DEVELOPMENT DATA 5300 Woodmere Dr., Suite 105 Bakersfield, CA 93313 SAMPLE ID OR WELL NO.: ~'v%~/,,/ ~-'~ DEPTH TO WATER: H~, ~ ~ PROJECT'NO.:'. ~ ~O~ ~ O~ TOTAL DEPTH OF WELL: ~.~O ft ~ROJEC~ NAME: ~ ~ ¢~ ~ ~ WELL DIAMETER: ' ~ DATE: ~ ~ ' 5 '-- O ~ CASING VOLUME: '~,rO gallons SAMPLEDBY: ~ ~IA~O~'~ ~ t)~b~.~ METHOD OF PURGING: I)C PURGE CHARACTERISTICS TEMP ' pH SEC SAMPLE TIME INTAKE RATE CUM. VOL WELL VOL (F°) (UNITS) (Fmhos/ CONTROL DEPTH (GPM) . (GAL) PUMPED cra) NO~ (COLOR, TURBIDLY, ETC.) I~oo ,, " ~ 6~.~ ~.~? ~13. "· 16off I. I~o ~~ ....... BUFFER SOLUTION pH 4.01 F [7.0 L pH 10.0 Well Oa~acily: 2" - 0.1632 gal[oMine~r toot ~F~' 4" - 0.6528 gallo~linear INSTRUMENT REt'.DING T I 6" - 1.46S8 gallo~inear foot KCE"S~CM ~ 25 C~ ' t 74 t ' 718 1413 6868 I 58640 I ~MP F' t t I - INSTRUMENT READING t I I ~.~ SAMPLED AT: ~ ~ -0 ~. FI¢,~AL DEPTH_TO WATER: ~ ~ ' ~ ~ FT. 3 CASING VOLUMES= NO~ES: E2C REMEDIATION, LEC WATER QUALITY SAMPLING'RECORD Groundwater Scientists. :Environmental Consultants AND WELL DEVELOPMENT DATA 5300 Woodmere Dr., Suite 105 Bakersfield, CA 93313 iSAMPLE ID OR WELL NO.: ~/ -- ~' DEPTHTO WATER: ~ ~ROJECT'NO.: ~ ~O I ' 6L O3 .. TOTAL DEPTH OCWELL: 50. CASING VOLUME: [~{ % ' gallons DATE: ~ ~- 5 -- O ~ ,- SAMPLEDBY: ~ .[IA~,rOr~' ~ U~L~.~ METHOD OF PURGiNG: ~C ~.~. ~ ..................... . .......... .__~ . ~ .... .sM;=-..~ PURGE CHARACTERISTI~ TEMP pH SEC SAMPLE - TIME INTAKE RATE CUM. VOL WELL VOL (F°) ' (UNITS) (Fmhos/ CONTROL DEPTH (GPM) (GAL) PUMPEO cra) NO. (COLOR, TURBIOI~,.ETC.) ioo~ ,, ,, H'. 66.6 W.]~ :13 ,, pH CALIBRATION / STANDARDIZED ~e~F*BUFFER SOLUTION pH 4.01 F~I 7.0 ~ PH 10.0 ~1 V.loll Gapaclty: 4" 2'"- 0.65280'1632 gallo~liaear ~OOtgallo~linear foot INSTRUMENT RE :',,DING T ~ [ 6" - 1..45s8 gallo~inear foot SPE~¢FIC EEEC;RI~'CXL ~UCf~ ~lO~ STANDARDIZATION ~OLUTION pMHOS / CM ~ 25 C° I 74 718 1413 I 6868 58640 . --,~ ~ I:NTREA . , _ -~ ~e SAMPLEDAT: ~,O ~. FiNAL DEPTH TO WATER: ~-~ FT. 3CASINGVOLUMES=J ( I NOTES: E,C REMEDIATION, LLC WATER QUALITY SAMPLING RECORD Groundwater Scientists:Environmental Consultants AND WELL DEVELOPMENT DATA 5300 Woodmere Dr., Suite 105 Bakerslield, CA 93313 SAMPLE ID OR WELL NO.: ~'V~/ ~ ~ · DEPTH TO wATER: Hcl; ('O ft" PROJECT NO.: ~ ~)O ~ GL o..~ TOTAL' DEPTH OF WELL: ~"'O.(,-~ ft PROJECT NAME: ~ ¢x ' ~/'~..~' '~ WELL DIAMETER: DATE: - \ ~' - ~i~ 6"') '~ CASING VOLUME: i.0 gallons SAMPLEDBY: ~" \"tA!,(¢r,,' ~._ L,/.~,L,~,.~ METHOD OF PURGING: 006'--4`0 PURGE CHARACTERISTICS TEMP~,H SE~' SAMPLE REMARKS Th\.IE INTAKE RATE CUM. VOL WELL VOL (Fe) (UNITS) (~.tmhos/ CONTROL DEPTH (GPM) (GAL) PUMPED cra) NO. (COLOR, TURBIDITY, ETC.) BUFFER SOLUTION pH4.01 I !..:17..~ pill0.0 .I Well Capac,ty: 2':. 0.1632 ~a,lon/linear foot T~,~° ~ __j 4"- 0.6528 gallon/linear foot iNSTRUMENT RE.;',DING [~ i i .. 6". 1.4588 gall0n/linea,; foot SPE~'FIC E~ECTRILCAL CONOUCTANCE - CALIBRATION ~ STANDARDIZATION KCLSOLUTIONpMHOS/CM @ 25C° I 74 718 1413 6868 58640 ' TEMP F' I SAMPLEDAT: [[~' ~ FT. FI~',IAL DEPTH TO WATER: 1~'7' I ~ .FT. 3CASINGVOLU:':~ES: "~ I NOTES: E2C REMEDIATION, LLC WATER QUALITY SAMPLING RECORD Groundwater Scientists: Environmental Consultants AND WELL DEVELOPMENT DATA 5300 Woodmere Dr., Suite 105 Bakei'slield, CA 93313 I SAMPLE ID OR WELL NO.i ~ ~ I 0 DEPTH TO W,~TER: /./1,~. ~(¢' ft 'RoJEcT'NO.: ~ '~ O ~ GL o3 TOTAL DEPTH OF WELL:' ~'~..Oo~ ft pROJECT NAME: ~ ~ ~/~ .</' -i" . . WELL DIAMETER:' °2. DATE: \ ~' - 5 '-- O ?, CASING VOLUME: I'l G '9al',ons SAMPLEDBY: ~' \-tA~,¢O~V ~ ~(.L~,~ METHOD OF PURGING: OC ¢~ ......... ' 'S C TIME INTAKE RATE CUM. VOL WELL VOL (F°) : (UNITS) (pmhos/ CONTROL DEPTH (GPM) (GAL) 'PUMPED cra) NO. (COLOR, TURBIDLY, ETC.) 2H CALIBRATION / STANDARDIZEO 4" - 0.6528 gallo~linear foot INSTRUMENT RERDING I I 6".- 1.4688 gallo~linear foot S p¢~FIC ELEC¢~ ~ ~ 7~ ¢ ST A'N D AR DIZATION · . SAMPLEO AT:' ~ -O ~. FINAL OEPTH TO WATER: ~ ~ -~ ~ FT. 3 CASING VOLUMES= NOTES: E2C REMEDIATION,.LLC WATER QUALITY SAMPLING RECORD ' Groundwater Scienlists: Environmental Consultants AN D WELL D EVELOPM ENT DATA 5300 Woodmere Dr., Suite 105 Bakersfield, CA 93313 . SAMPLE ID OR WELL'NO.: ' [¢~¢v/ ~' tl DEPTH TO WATER: HC,~ PROJECT'NO.: ~ ~O~ ~ O~ TOTAL DEPTH OF WELL: ~.Sff ft PROJECT NAME: ~ ~ ' ~ ~ ~ WELL DIAMETER: DATE: ~ ~ - ~ ~ 'O' ~ . CASING VOLUME: ~- ~ gallons SAMPLED BY: ~ ~ '~IA~, ~Or~ -- ,~i ~/~-b~-~ METHOD OF PURGING: 0 ~- ' PuR'G~ CRARAOTERISTICS TEMP pH SEC SAMPLE REMAR~ TIME INTAKE RATE CUM. VOL WELL VOU (F°) (UNITS) (pmhos/ CONTROL DEPTH (GPM) (GAL) PUMPED 'cm) NO. (COLOR. TURBIDI~ ETC.) pH CALIBRATION/.STANDARDIZED · %~F~BUFFER SOLUTION pH 4.01 , ~ FI 7.0 ~ pH 10.0 Well Capacity: 2"-4, 0.65280'1632 galloWlineargall°Wii'near footf°°t INSTRUMENT RE.,',.DING I I 6" - 1.46S8 galloWlinear foot KCL SOLUTIbN pMHOSTCM e 25 C~ J 74 718 1413 6888 58840 TEMP F' I iNSTRUMENT READING ! I I . -- SAMPLEDAT: ~-S~O ~. FINAL DEPTH TO WATER: ~,~ FT. 3 CASiNG VOLUMES= ~:]~ GALS. NOTES: E2C REMEDIATION, LLC WATER QUALITY SAMPLING RECORD Groundwater Scientists: Environmental Consultants- AND WELL DEVELOPMENT DATA · 5300 Woodmere Dr., Suite 105 Bakersfield, CA 93313 ........................ SAMPLE ID OR WELL NO.: ~ ' I '~" . DEPTH TO WATER: ~',O ~ PROJECT'NO.: '~ ~O~ ~L O'~ TOTAk DEPTH OF WELL: ~:~ ft pROJECT'NAME:: ~ ~ . ¢~ ~ ~ WELL DIAMETER: ~" ' DATE: ~ Z - ~'-- O'~ CASING VOLUME: ~-~ gallons :SAMPLED BY: ~ ~lA~,~Or~ ~ ~]~b~ METHOD OF PURGING: 'O~.~' PURGE CHARACTERISTICS ' '~" pH SE~' SAMPLE REMARKS · TIME INTAKE RA~E CUM. VOL WELL VOL (F°) (UNITS) (~mhos/ CONTROL DEPTH (GPM)' (GAL) PUMPED cra) 'NO. (COLOR, TURBIDLY, ETC.) BUFFER SOLUT ON RH4.01 '1 F:I7'0 [ pH,0.0 I i ,VeliCapaclty: 2"-0.1632gallo~linearfoot T~~ ~.j 4" - 0.6528 gallo~linear foot INSTRUMENT RE.:'.,~NG [ I -~ 6" - 1.4688 gallo~inear foot SPE~TFIC E~EOCRI~AL ~ANOE .'CA~B~Ti0~'~ STANDARDIZATION KCL"SOLUTIONFMHOS/CM ~25C~ I 74 718 I ' 1413 i 6868 58640 I · SANr~PLED AT:., ~ &'O ~. FI~,IAL DEPTH TO WATER: ~,0 ~ FT. 3 CASING VOLUMES= ~ NOTES: ,. E,;C REMEDIATION, LLC WATER QUALITY SAMPLING RECORD Groundwater Scientists:Environmental Consultants AND VVELL DEVELOPMENT DA-CA 5300 Woc;dmere Dr., Suite 105 Bakersfield, CA.93313 .................... .-__ ;SAMPLEIDORWELLNO.: ~~ ~ DEPTH TO WATER: PROJECT'NO.: ~ ~O ~ ~L O~ TOTAL DEPTH OF WELL: pRo3ECT NAME: ~ ~ ¢~ ,¢ ~ WELL DIAMETER: DATE: ~ ~ - 5 ~ O ~ CASING VOLUME: 'Z-~ gallons SAblPLEDBY:' ~ .~!A~(Or~ ~ ~b~ METHOD OF PURGING: OC PURGE CHARACTERISTICS TEMP pH SEC SAMPLE REMARKS TIME INTAKE RATE CUM. VOL WELL VOL (F°) (UNITS) (Fmhos/ CONTROL DEPTH (GPM) (GAL) PUMPED cra) NO. (COLOR, TURBIDLY, ETC.) P~I~?~~IZED Well Capacity: 2'' 0.1632 gallo~linear fool - BUFFER SOLUTION pH 4.01 F 1 7.0 pH 10.0 4" - 0.6528 gallodfinear foot . INSTRUMENT RE:.,DING ~ I 6" - 1.4688 gallo~inear foot SpE~IC ELEOTRI~AL ~N~UOTANOE - CALIBRATION / STANDARDIZATION ~OLUTIONpMHOS/CM ~ 25C~ t 74 ~ 718 1413 6868 58640 I .. h~STRUMENT REA . ~ ....... ' ....... SAMPLED AT: ~O · O~ ~. FI~AL DEPTH TO WATER:' ~, ~ FT. 3 CASING VOLUMES= ,I E2C REMEDIATION, .LLC - WATER QUALITY SAMPLING RECORD Groundwater Scientists:Environmental Consultants" AND VVEr'L DEVELOPMENT DATA 5300 Woodmere Dr., Suite 105 Bakersfield, CA 93313 SAMPLE ID OR WELL NO.: ~'¢~v/ ~ I~ ' DEPTH TOWATER: ~.~ PROJECT'NO.: ~ ~O i ~L O~' TOTAL DEPTH OF WELL: '~ ~ .' q ~. ft PROJECT NAME: ~ ~ ~ ~' ~ WELL DIAMETER: ~ ~ DATE: ~ ~ - 5 ~ O ~ CASING VOLUME: ~:~ 9al',ons SAMPLEDBY: ~ ~A~,~orJ ~ U~U~.~ METHOD OF PURGING: ~t~ ~' ..... PURGE CHARACTERISTICS TEMP pH SEC SAMPLE REMARKS TIME INTAKE - RATE CUM. VOL WELL VOL (F°) (UNITS) - (pmhos/ CONTROL DEPTH (GPM) (GAL) PUMPEO . cra) NO, (COLOR, TURBIDLY, ETC.) Iq;; . ' . ....... ~ ~ ~ .................... . ........... . ...... . ......... ~H CALIBRATION / STANDARDIZED ~a~F~BUFFER SOLUTION pH 4,01 F~I 7.0 ~ pH 10,0 Well Capacity:' 4"2' .' 0.65280'1632 galioWlinea~gall°Wlinear footf°°t INSTRUMENT RE ;,,DING [ ] 6". 1 SPECIFIC ELECTRILCAL CONDUCTANCE - CALISRATION / STANDARDIZATION KCL SOLUTION FMHOS / CM ~ 25 C~ ~ 74 718 1413 6868 58640 TEMP F, t INSTRUMENT READING I I SAMPLED AT: ~O ,O ~. FI~:AL DEPTH TOWATER: ~O FT. 3 CASING VOLUMES= '~-~ GALS. I NOTES: EI'C REMEDIATION, LL'C WATER QUALITY SAMPLING RECORD Groundwater Scientists:Environmental Consultants. ' AND VVELL. DEVELOPMENT DATA 5300 Woodmere Dr., Suite 105 Bakersfield, CA 93313 SAMPLE' ID OR WELL NO.: '~/'~/ ~ ]5',c[ .. DEPTH TO WATER: O¢--~' ft PROJECT'NO.: ~ ~ O | ~ O~ TOTAL DEPTHOF WELL: ~'.~,l~ ft PROJECT.NAME::__ irt ¢'~ ¢"/'~ '~ T WELL DIAMETER: .,. ~..,v. .. DATE: ~ ~. - .~ -- ~ ."~ CASING VOLUME: gallons.. SAMPLEDBY: ~' \'~A~('Orv'. ~. L/~:~L~.~ .METHODOF. PURGING:~I~ ..... ~~A~ R-rs ~-~ ~ ~'~-- TE TI SEC SAMPLE REMARKS Th\.lE INTAKE RATE CUM. VOL WELL VOL (F°) iUNITS) (l.~mhosl CONTROL' DEPTH (GPM) (GAL) PUMPED cra) NO.' (COLOR, TURBIDITY, ETC.) I'pH CALIBRATION/STANDARDIZED T~,'TZP-F"BIJFFEF1 SOLUTION pH 4.01 I F:I 7.0 [ pH 10.0 __ . V.lell Capacity: 4"2"'- 0.65280'1632 gal[on/li~ear fOOtgalion/linear foot 'INSTRUMENT RE:'.,DING I I 6" - 1.4688 gallon/linear foot. SPECIFIC ELECTRILCAL CONDUCTANCE- CALIBRATION / STANDARDIZATION KCL SOLUTION pMHOS / CM @ 25 C" I 74 718 1413 6868 58640 TEMP F' I INSTRUMENT READING I I SAMPLED AT: FT. FI~.~AL DEPTH TO WATER: " FT. 3 CASING VOLUMES= GALS. I NOTES: 'l I . i · I E2C REMEDIATION, LLC WATER QUALITY SAMPLING RECORD Groundwater Scientists: Environmental Consultants . .AN D WELL D EVELOPM ENT DATA 53'00 Woodmere Dr., Suite 105 [Bakersfield, CA 93313 SAMPLE ID OR WELL NO.:' ~'"~'~/ ~ 16 ~ DEPTH TO WATER: &q~31 PROJECT NO.: ~ ~Oi ~ OD TOTAL DEPTH OF WELL: "~'~'.1¢ ft PROJECT NAME: ~ ~ ¢~ ¢ ~ WELL DIAMETER: ~ ' DATE: ~ ~ - .~ ~ O Z~' CASING VOLUME: ' ,~O 9a~ons SAblPLED BY: ~ ~IA~ (~r¢ ~ ~] ~ b~ MEFHOD OF PURGING:'~O ' PuRG~ ~ARAoTERiSTicS TEMP pH SEC SAMPLE REMARKS TIME INTAKE RATE CUM. VOL WELL VOL (F°) (UNITS) (pmhos/ CONTROL D~PTH (GPM) (GAL) PUMPEO cra) NO. (COLOR, TURBIBI~,'ETC.) I, ~ , 2H CALIBRATION / SlANDARBIZED · BUFFER SOLUTION pH4.01 ~ F'i7.0 I pH 10.0 WellCapacity: 2"- O.1632galioWlinearfoot %~Fo 4" - 0.6528 galloWlinear foot INSTRUMENT RE:',,DING I ~ 6" - 1.4688 gallo~inear foot SPECIFIC EUECTRILCAL CONDUCTANCE - CALIBRATION / STANDARDIZATION KCL'SOLUTION pMHOS / GM ~ 25 C° I 74 ~ 718 1413 6868 58640 TEMP F' I I INSTRUMENT READING I ~ SAMPLED AT: ~. FINAL DEPTH TO WATER: FT. 3 CASING VOLUMES= ~' ~ GALS. E "C REMEDIATION, LLC WATER QUALITY SAMPLING RECORD Groundwater Scientists: Environmental Consultants . AN D WELL D EVELOPM ENT DATA 5300 Woodmere Dr.. Suite 105 Bakersfield. CA 93313 SAMPLE ID OR WELL. NO.: ' ~7'~/ ~' -'i'~ DEPTH TO WATER: :'7~'', ?&, ft PROJECT'NO.: .~ '~Oi GL O,.~ ... TOTAL DEPTH OFWELL: '~,O ft :'PROJECT NAME: ['~ ¢, ~/'~',¢ I 'DATE: ..._ . \ ~, - 5 -- ~) '~ CASING VOLUME:. ,0-~ gallons PURGE CHARACTERISTICS TEMP . pH SEC' SAMPLE . TiME INTAKE RATE CUM.' VOL WELL VOL (F°) (UNITS) (~.~mhos/ CONTROL DEPTH (GPM) (GAL) PUMPED cra) NO. (COLOR, TURBIDITY, ETC.) aH '~'"~"~1 ~D I Z~ ~' pH 4.01 1 F:.I 7.0 ~ pFI 10.0 Well Capacity: 2" - 0.1632 gallon/linear foot BUFFER SOLUTION 4' - 0.6528 gallon/linear foot I"~'-'~'P-F~ LL~ 6" - 1.4688 gallo~inear foot INSTRUMENT RE :',,DING T i .... ___.___ SPE~SiFIC EL~ECTRILCAL CONDUCTANCE - CALIBRATION / STANDARDIZATION . KC L S ~2~Tq:rO~S~TC M @ 25 C'' t 74 [ 718 1413 6868t 58640 1 INSTRUMENT REA ..... : .......... ,., // .,-:,_ ^l q SAMPLED AT: FT. FI;','AL OEPTH TO WATER: FT. 3 CASING VOLU?.ES= - E2C REMEDIATION, LLC WATER QUALITY SAMPLING RECORD Groundwater Scientists:Environmental Consultants AND WELL DEVELOPMENT DATA 5300 Woodmere Dr., Suite 105 Bakersfield, CA 93313 SAMPLE ID OR WELL NO.:' ~V~v/ -- i-~- ~;~ DEPTH TO WATER: bt ~ '- ft PROJECT'NO.: ~ ~.,,~O i 6~ O..~ TOTAL DEPTH OF WELL:' q"i-2'2- ft PROJECT NAME: .... ~ (~ I~/"& .~' T WELL DIAMETER: DATE: \ 2, - ~ '-- O '~.., CASING VOLUME: gallons SAMPLEDBY: ~' \IA!,~:C"~:,/ ~_ ~',~b~ METHOD OF PURGING: f~O · 'p~RG~ ~D'HARACTERISTICS~' TEMP pH SEC SAMPLE REMARKS TIME INTAKE RATE CUM. VOL WELL VOL (F°) (UNITS) (l. tmhos/ CONTROL DEPTH (GPM) (GAL) PUMPED cra) NO. (COLOR, TURBIDITY, ETC.) T'~,-'~T~-F°BUFFER SOLUTION pH 4.01 ['!17.0 [ pH 10.0 Well Capacity: 4'2" .' 0.65280'1632 gallon/lineargallon/linear footf°°t INSTRUMENT RE ,',,DING I I 6" - 1 4885 gal on/linear foot SPECIFIC ELECI:~ ~A F---'~'~[ ? ~ ¢ STANd~,R KCL SOLUTION pMHOS / CM @ 25C° I 74 I 718 1413 6868 58640 T'EMP'F' j INSTRUMENT READING ! I SAMPLED AT: FT. FINAL DEPTH TO WATER: FT. 3 CASING VOLUMES= GALS. I NOTES: ! · E2C REMEDIATION, LLC WATER QUALITY SAMPLING RECORD Groundwater scientists: Environmental Consulta}lts AND VVELL DEVELOPMENT DATA 5300 Woodmere Dr., Suite 105 Bakersfield, CA 93313 ---'""- SAMPLE ID OR WELL NO.: ~¢'~v/ ~ iq s .. DEPTH TO WATER: 5], ~ fl · IPROJE'CT~NO.: ~ ~O ~ ~L O~ TOTAL DEPTH OF WELL: ~-~ ft' P:ROJECT NAME: ~ ~ CA ~ ~ WELL DIAMETER: DATE: ~ ~ - 5'~ O ~ CASING VOLUME: 3.~ gaI~ons SAMPLEDBY: ~ ~A~Or~ ~ U~U~.~ METHOD OF PURGING:~O PURGE CHARACTERISTICS TEMP SEC SAMPLE REMARKS TIME INTAKE RATE CUM; VOL WELL VOL (F©) (UNITS) (pmhos/ CONTRO~ DEPTH (GPM) (GAL) PUMPED cra) NO. (COLOR, TURBIDLY, ETC.) i0~ ,, ~, 6 ~¢.o ~.~3 0,'3i c1~- ~,¢ ~, ,," ~ 6~-9 ~,oo 0.30 ,~ " I 10 rg ~~ . ........ . ..... · ......... ' .................... %~F~BUFFER SOLUTION pH 4.0~ ~ F: I 7.0 ~ pH ~0.0 Well CapacitT 4"2"'- 0.65280'16329ali°Mlinear f°°~galio~linear foot NSTRUMEMT RE ;.,DING ~ ~ 6" - 1.4~88 gallo~linear foot SPECIFIC ELE~¢R~C~L CONDUCTANCE - CALIBRATION / STANDARDIZATION KCL SOLUTION ~tMHOS / CM~ 25 C° [ 74 ~ 7~8 1413 6868 58643 ~MP F' I I ~SrRU~Nr R'6AVtNO I I I SAMPLEDAT: ~O ~ ~. FINAL DEPTH TO WATER: ~'~ FT. 3CASINGVOLUL',ES= i0'~ GALS. I - NOT[S: E2C REMEDIATION, LLC WATER QUALITY SAMPLING RECORD Groundwater Scientists: Environmental Consultant~ AND WELL DEVELOPMENT DATA 5300 WOddmere Dr., Suite 105 Bakersfield, CA 93313 SAMPLE ID OR WELL NO.: PROJECT NO.: ~ ~O ~ ~L O~ TOTAL DEPTH OF WELL: ~, '~ ft PROJECT NAME: .... ~ ~ ¢~ .¢ ~ WELL DIAMETER: '~" DATE: ~ '~ - ~ ~ O ~ CASING VOLUME: ,~0 gal~ons SAN1PLEDBY: ~ ~lA~[:2r~- "' PURGE CHARACTERISTICS ' TEMp pH SEC SAMPLE REMARks TIME ~ INTAKE RATE CUM. VOL WELL VOL (F°) (UNITS) (Fmhos/ CONTROL DEPTH (GPM) (GAL) PUMPED cra) NO. (COLOR, TURBIDLY, ETC.) pH CALIBRATION / STANDARDIZED %~F°BUFFER SOLUTION pH 4.01 ~ F~I 7.0 pH 10.0 Well Capacity: 4"2"'- 00'16326528 gallon/Igall°Wlinearnear footf°°t INSTRUMENT READING ~ I 6" -1.4688 galloWli~ar foot SPECIFIC ELECTRILCAL CONDUCTANCE- CALIBRATION / STANDARDIZATION KCE'SOLUTION FbIHOS'/'CM e 25 C~ I 74 718 1413 6868 58640 I INSTRUMENT READING · SAMPLED AT: ~¢~,0 ~. FINAL DEPTH TOWATER: ~¢6, ~ % FT. 3CASING VOLUMES=%,I~ GALS. i NOTES: Project Number 180 IBK03 Janua~_ 21. 2003 APPENDIX B Fourth Quarter 2002 Groundwater Analytical Laboratory Report I E2C Remediation, LLC Appendix B 3nes Chain of Custody FOrm Client Name: E.,C Remediation, LLC 661.831.6906 fax 661.831.6234 Analysis Requested Sample Matdx ~ ~ ~ 8 ~ Aqueous · \ , Client Address: 5300 Woodmere Dr., Suite 105. Bakersfield, CA 93313 % ~ ~ ~ ~ ~ ~ ~ ~ ~ .. ~ soi~ Project Man er: .. ~ ~ ~,~ ~ ~ ~ ~ ~ .~ ¢ ¢ ~ ~ ~' ~ ~ Acidified Set'pier Name: ~'~-~ ~ "~ ~'.~ ~ x .............. ~ ~ ~ ~ % ~ ~ x ~ X Sample Date Sample Time Sample 'Description and Container Type Comments i'z°s ~ ~ - ~ ..... / l~ 5-~ ~ ~.- i~( , , Turnaround Time Requested: 24 Hour ~ 48 Hour 5-Day . Standard Relinquished By: ~ ' ~ ~~' Date:/Z#/~ Relinquished By': Date: L~ ~s Chain of Custody Form Client Name: E2C Remediation, LLC 661.831.6906 fax 661.831.6234 Analysis Requested Sample Matdx Project Name: '~,'ft.. :~-- ~' ~ ~ ~ ~ Aqueous Client Address: 5300 Woodmere Dr., Suite 105. Bakersfield, CA93313 ~ ~ ~. ~ ~ < < ~ ~ .. . ~ ~ ~ ~ ~ ~ ~ ~ soi~ Project Manager: ~ ~ '~ ¢~~ ~ ~ ~ ~ ~ ~ ~ ~ ~ idifi ~ ~ ~ ~ ~ . Ac ed Sampler Name: ~ u~ t ~ ~ ~ o ~ ~ ~ ~ ~ x Sample Date Sample Time Sample Description and Container Type ~ = ~ ~ > ~ ~ = 3 ~ Comments Turnaround Time Requested: 24 Hour 48 Hour 5-Day Standard . Relinquished By: . Date: I't ~ Relinquished By: Date~ " Re ce iv ed By:-_,/¢~ D ate:/"~ . " ~, ~Z Received By: Date: I' Halcyon Laboratories,* Inc. - Laboratory Report I Certification # 1920 ' -' CLIENT EzC Remediation, LLC Project Name: Mr Fast I 5300 Woodmere Drive, Suite 105 Bakersfield, CA 93313 Matrix: Aqueous Sampled by: Gabriel Halcon & Ramon Velez TESTS: TPH Gas by EPA 8015M · TpHg Analysis: 12/12/2002 : ~ . Date of Report: 12/17/2002 · ' ' Units: ug/L I Sample'#: 2K2-4109 2K2-4110 2K2-4111 2K2-4112 2K2-4113 2K2-4114 2K2-4115 Date Sampled: 12/5/2002 12/5/2002 12/5/2002 12/5/2002 12/5/2002 12/5/2002 12/5/2002 DL ug/L Sample Description: Tblank MW-I8 MW-15S NIVq- 17S MW-10 NIW-9 MW-6 TPH Gasoline ND ND ND ND 160 ND ND 50 Surrogate Recovery % 89.8 9421 80.4 82.9. 84.1 82.5 88.7 I Sample#: 2K2-4116 2K2,4117 2K2-4118 2K2-4119 2K2-4120 2K2,4121 Date Sampled: 12/5/2002 12/5/2002 12/5/2002 12/5/2002 12/5/2002 12/5/2002 DL ug/L I Sample Description: MW-3 MW-5 N1W-4 MW-2 MW-14 MW-12 'l TPH Gasoline ~0 100 110 220 1,860 7,910 50 i Surrogate Recovery % 94.8 100. I 91 80.2 93 88.9 Sample#: 2K2-4122 2K2-4123 2K2-4124 2K2-4125 2K2-4126 2K2-4127 i Date Sampled: 12/5/2002 12/5/2002 12/6/2002 12/6/2002 12/6/2002 12/6/2002 DL ug/L Sample Description: MW-I ' MW-7 MW-8 MW-1 IR MW-13 MW-19 I TPH Gasoline · 10,630 13,900 54,000 64,700 40,900. 38,000 2,500 I Surrogate Recovery % 104.5 82.2 99.7 95.9 86.4 · 90.1 I DL = Detecti°n Limit ' ~r'~ ND - Non-Detect at given DL . NA - Result not available al Analys.t: Phil Acosta Halcyon Laboratories; 'Inc. EPA 8260B Laboratory Report Water Sample Results in ug/L I ' Certification# 1920 I CLIENT: E2C Remediation, LLC 5300 Woodmere Drive, Suite 105 I : Bakersfield, CA 93313 Project ID · Mr Fast I Report Date .: 12/12/2002 I Sample ID · 4109/Tblank I Analyte Result Method RL Units I 5 Oxygenates t~BUtanol (TBA) Tert-Butyl Alcohol ND 2.5 ug/L I Methyl Tert-Butyl Ether (MTBE) ND 0.5 ug/L Diisopropyl Ether (DIPE) ND 0.5 ug/I;. 'Ethyl Tert-Butyl Ether (ETBE) ND 0.5 ug/L Tert-Amyl Methyl Ether (TAME) ND 0.5 · ug/L I BTEX COmponents I Benzene ND 0.5 ug/L Toluene ND 0.5 ug/L Ethylbenzene ND 0.5 ug/L I rn & p Xylenes ND 0.5 ug/L o Xylenes ND · 0.5 ug/L Internal Standards Results % Recovery I Benzene, fluoro ~ 50.0 :1.00% Benzene-d5, chloro- 50.0 100% I 1,4-Dichlorobenzene-d4 50.0 :1.00% Surrogate Standards ~ I Methane, dibromofluoro- 53.6 107% · 1,2-Dichloroethane-d4 56.3 1:1.3% Toluene-d8 50.2 100% I p:Bromoflu°robenzene (BFB) 50.5 .101% ~ Halcyon'LabOratories, Inc. i · EPA 8260B .Laboratory Report water Sample Results in ug/L I Certification # .1920 I CLIENT: . E2C Remediation, LLC 5300 Woodmere Drive, Suite 105 I Bakersfield, CA 93313 Project ID · Mr Fast I Report Date · 12/12/2002 .. I samPle ID · 4110/MW-18 Analyte ' Result Method RL Units 5 Oxygenates t-Butanol (TBA) Tert-Butyl Alcohol ND 2.5 ug/L Methyl Tert-Butyl Ether (MTBE) ND 0.5 u~L Diisopropyl Ether (DIPE) ND 0.5 ug/L Ethyl Tert-Butyl Ether (ETBE) ND 0.5 ug/L Tert-Amyl Methyl Ether (TAME) ND 0.5 ug/L BTEX Components Benzene 7.1 0.5 Ug/L Toluene ND 0.5 ug(L Ethylbenzene 2 0.5 ug/L m & p Xylenes 0.8 0.5 ug/L o Xylenes ND 0.5 ug/L. Internal Standards Results % Recovery Benzene, fluoro 50.0 100.% Benzene-d5, chloro- 50.0 100% 1,4-Dichlorobenzene-d4 50.0 100% Surrogate Standards Methane, dibromofluoro- 52.9 106% 1,2-Dichloroethane-d4 58.0 116%. Toluene-d8 49.5 99% p-Bromofluorobenzene (BFB) 50.9 1.02% HalCYon Laboratories, :[nc. EPA 8260B Laboratory, Report Water Sample Results in ug/L Certification # 1920 I EzC Remediation, CLIENT:' LLC 5300 Woodmere Drive, Suite 105 I Bakersfield, CA 93313 Project ID · ' Mr Fast '~ Report Date · '12/12/2002 · Sample ID. 4111/MW-15S I Result Method RL Units Analyte i 5 Oxygenates t-Butanol (TBA) Tert-Butyl Alcohol ND '2.5 ug/L Methyl Tert-Butyl Ether (MTBE) ND 0.5 Ug/L I Diis0Propyl (DIPE) ND 0.5 ug/L Ether Ethyl Tert-Butyl Ether (ETBE) ND 0.5 ug/L Tert-Amyl Methyl Ether (TAME) 'ND 0.5 ug/L. I BTEX Components I Benzene ND 0.5 u~L Toluene ND 0.5 ug/L EthYlbenzene 22 0.5 u~L I m & p Xylenes 14 0.5 ug/L o Xylenes 7.1 0.5 ug/L 'l Internal Standards Results % Recovery · I Benzene, fluoro- 50.0 100% Benzene-d5, chloro- 50.0 100% I 1,4-Dichlorobenzene-d4 50.0 100% Surrogate Standards I Methane dibromofluoro- 54.8 110% 112-Dichloroethane-d4 58.4 117% Toluene-d8 50.2 100% I p-Bromofluorobenzene (BFB) 52.5 105% HalCYon Laboratories, ]:nc. EPA 8260B Laboratory Report Wa~r sample Results in ug/L Certification # 1920 CLIENT: E2C Remediation, LLC 5300 Woodmere Drive, Suite 105 Bakersfield, CA 93313 Project ID · Mr Fast Report Date · 12/12/2002 Sample ID · 4112/MW-17S Analyte Result .Method RL Units 5 Oxygenates t-Butanol (TBA) Tert-Butyl Alcohol' ' ND 2.5 u~L Methyl Tert-Butyl Ether (MTBE) ND 0.5 u~/L Diisopropyl Ether (DIPE) ND 0.5 ug/L EthyI-Tert-Butyl Ether (ETBE) ND 0.5 Tert-Amyl Methyl Ether (TAME) ND 0.5 u~ BTEX Components Benzene ND 0.5 ug/L Toluene ND 0.5 us/L 'Ethyl benzene ND 0.5 u~/L m & p Xylenes ND 0.5 o Xylenes ND 0.5 Internal Standards Results % Recovery Benzene,. fluoro 50.0 100% Benzene-d5, chloro- 50.0 100% 1,4-Dichlorobenzene-d4 50.0 100% Surrogate Standards Methane, dibromofluoro- 59.5 119% 1,2-Dichloroethane-d4 59.3 119% ToJuene-d8 51.0 102% p-Bromofluorobenzene (BFB) 53.6 107% Halcyon Laboratories, :Inc. EPA 8260B Laboratory Report Water Sample Results in ug/L Certification # 1920 CLIENT: E2C Remediation, LLC 5300 Woodmere Drive, Suite 105 Bakersfield, CA 93313 Project ID · Mr Fast Report Date: 12/12/2002 Sample ID · 4113/MW-.10 Analyte Result Method RL Units 5 Oxygenates t-Butanol (TBA) Tert-Butyl Alcohol 'ND 2.5 ug/L Methyl Tert-Butyl' Ether (MTBE) ND 0.5 ug/L Diisopropyl Ether (DIPE) ND 0.5 ug/L Ethyl Tert-Butyl Ether (ETBE) ND 0.5 ug/L Tert-Amyl Methyl Ether (TAME)· ND 0.5 ug/L BTEX ComponentS Benzene ND 0.5 ug/L Toluene , ND 0.5 ug/L Ethyl benzene 1.3 0.5 ug/L m & p Xylenes 0.7 0.5 ug/L o Xylenes 2. l 0.5 ug/L Internal Standards Results % Recovery Benzene, fluoro 50.0 100% Benzene-d5, chloro- 50.0 100% 1,4-Dichlorobenzene-d4 50.0 100% Surrogate Standards Methane, dibromofluoro- 58.7 -117% 1,2-Dichloroethane-d4 56.8 114% Toluene-d8 49.8 100% p-Bromofluorobenzene (BFB) 48.7. 97% t I Halcyon Laboratories :Inc. EPA 8260B Laboratory Report Water Sample Results in ug/L I Certification # i920 I CLIENT: E2C Remediation, LLC .~ 5300 Woodmere Drive, Suite 105 I Bakersfield, CA 93313 Project ID · Mr Fast I Report Date ·: 12/12/2002 ISample ID" 4114/MW-9 i -Ana!yte Result Method RL Units I 5 Oxygenates t-Butanol (TBA) Tert-Butyl Alcohol ND 2.5 ug/L i Methyl .Tert-ButYl Ether (MTBE) ND 0.5 ug/L Diisopropyl Ether (DIPE) .ND 0.5 ug/L .Ethyl Tert-Butyl Ether (ETBE) ND 0.5 ug/L Tert-Amyl Methyl Ether (TAME) ND 0.5 ug/L I BTEX components I Benzene' ND 0.5 ug/L Toluene ND 0.5 u*d~L · Ethylbenzene 2.2 · 0.5 ug/L I 'm &,p Xylenes 0.9 0.5 ug/L o Xylenes 4.4 0.5 ug/L Internal Standards Results % Recovery Benzene, fluoro 50.0 100% Benzene-d5, chloro- 50.0. 100% 1,4-Dichlorobenzene-d4 50.0 100% Surrogate Standards Methane, dibromofluoro- 49.1 98% 1,2-Dichloroethane-d4 60.0 120% Toluene-d8 48.1 96% p-Bromoflu0robenzene (BFB) 48.9 98% Halcyon Laboratories, Znc. EPA8260B" Laboratory Report Water Sample Results in ug/L Certifi'cation Ct 1920 CLIENT: E2C Remediation, LLC ' 5300 Woodmere Drive, SUite 105 ~ Bakersfield, CA 93313 Project ID: Mr Fast '. Report Dat'e: 12/12/2002 · Sample ID: 4115/MW-6 Analyte ' Result ~ Hethod RL Units 5 Oxygenates ' ' ' t-Butanol (TBA) Tert-Butyl Alcohol ND 2.5 ug/L Methyl Tert-Butyl Ether (MTBE) ND 0.5 ug/L Diisopropyl Ether (DIPE) ND 0.5 ug/L Ethyl Tert~Butyl Ether (ETBE) ND 0.5 ugZL Tert-Amyl Methyl Ether (TAME) ND 0.5 ug/L BTEX Components Benzene ND 0.5 u~rL Toluene ND 0.5 ug/L Ethylbenzene. 1.3 0.5 ug/L m & p Xylenes ND . 0.5 ug/L o Xylenes 1.5 0.5 ug/L ! Internal Standards Results % Recovery I Benzene, fluoro 50.0 '~100% Benzene-d5, chloro 50.0 100% i 1,4-DichlorObenzene-d4 50.0 100% Surrogate standards I Methane, dibromofluoro- 56.2 112% 1,2-Dichloroethane-d4 $8.9 118% ' Toluene-d8 48.6 97% i p-BromOfluorobenzene (BFB) 50.3 101% ~ Halcy°n LabOratOries, Inc. - EPA.8260B Laboratory Report waterSampleResults inug/L I. CertificatiOn # 1920 I E2C Remediation, LLC 5300 Woodmere Drive, Suite 105 I Bakersfield, CA 93313 Project ID · Hr Fast I Report Date: 12/12/2002 I Sample ID · 4116/MW-3 'l , Analyte Result Hethod RL Units I 5 Oxygenates t-Butanol (TBA) Tert-Butyl Alcohol ND 2.5 ug/L i Methyl Tert-Butyl Ether (MTBE) ND 0.5 ug/L Diisopropyl Ether (DIPE) ND 0.5 ug/L Ethyl Tert-Butyl Ether (ETBE) ND 0.5 ug/L Tert-Amyl Methyl Ether(TAME) ND 0.5 ug/L I BTEX Components I Benzene ND 0.5 ug/L Toluene ND 0.5 ug/L Ethylbenzene 2.1 0.5 ug/L I m & p Xylenes 0.9 0.5 ug/L o Xylenes 1.8 0.5 ugh_ Internal'Standards Results % Recovery Benzene, fluoro 50.0 100% Benzene-d5, chloro- 50.0 100% i 1,4-Dichlorobenzene-d4 50.0 100% Surrogate Standards I Methane, dibromofluoro- 54.5 109% i ,2-Dichloroethane-d4 55.5 111% Toluene-d8 51.1 102% ip-Bromofluorobenzene (BFB) 51.8 104% Halcyon Laboratories, Inc. EPA 8260B Laboratory Report Water Sample ResUlts in ug/L Certification # 1920 CLIENT: E2C Remediation, LLC 5300 Woodmere Drive, Suite 105 Bakersfield, CA 93313 Project ID · Mr Fast Report Date · 12/12/2002 Sample ID · 4117/MW-5 Result Method RL Units Analyte 5 Oxygenates t-Butanol (TBA) Tert-Butyl Alcohol ND 2.5 ug/L Methyl Tert-Butyl Ether (MTBE) ND 0.5 ug/L Diisopropyl Ether (DIPE) ND 0.5 ug/L Ethyl Tert-Butyl Ether (ETBE) ND 0.5 ug/L Tert-Amyl Methyl Ether (TAME ND 0.5 ug/L BTEX Components Benzene ND 0:5 ug/L Toluene ND= 0.5 ug/L Ethylbenzene 1.5 0.5 ug/L m & p Xylenes ND 0.5 ug/L o Xylenes ND 0.5 ug/L Internal Standards' Results % Recovery Benzene, fluoro 50.0 100% Benzene-d5, chloro- 50.0 100% 1,4-Dichlorobenzene-d4 50,0 100% Surrogate Standards. Methane, dibromofluoro- 47.9 96% 1,2-Dichloroethane-d4 56.6 113% Toluene-d8 . 49.7 99% p-Bromofluorobenzene (BFB) 52.0 104% Halcyon Laboratories, ]:nc. *' EPA 8260B Laboratory Report Water Sample Results in ug/L Certification # 1920 I CLIENT: E2C Remediation, LLC 5300 Woodmere Drive, Suite 105 I Bakersfield, CA 93313 Project ID · Mr Fast I Re~ort Date' 12/16/2002 I Sample ID · 4118/MW-4 Result Method RL Units Analyte S Oxygenates t-Butanol (TBA) Tort-Butyl Alcohol ND 2.5 u~L Methyl Tert-Butyl Ether (MTBE) ND 0.5 us/L Diisopropyl Ether (DIPE) . ND 0.5 Ethyl Tert-Butyl Ether (ETBE) ND 0.5 u~/g Tert-Amyl Methyl Ether (TAME) ND 0.5 u~L BTEX Components Benzene ND 0.5 u~L Toluene ND 0.5 uCL Ethylbenzene ND 0.5 u~/L m & p Xylenes ND 0.5 u~/L. o Xylenes 0.6 0.5 uCL .I Tnternal Standards Results % Recovery I Benzene, fluoro 50.0 1.00% Benzene-d5, chloro- 50.0 J. 00% i 1,4-Dichlorobenzene-d4 50.0 :[00% Surrogate Standards I Methane, dibromofluoro- 53.6 107% 1,2-Dichloroethane-d4 56.3 ! 13% Toluene-d8 48.8 98% · p-Bromofluorobenzene (BF.B) 50.2 1~00% · ! HalCYon Laboratories Inc. EPA 8260B Laboratory' Report Water Sample Results in ug/L Certification # 1920 ' ' I CLIENT: E2C Remediation, LLC 5300 Wo°dmere Drive, Suite 105 I BakerSfield, CA 93313 Project ID · Mr Fast I Report Date · 12/16/2002 ISample ID" 4119/MW-2 I Result I~lethod RL Units Analyte i 5 Oxygenates t-Butanol (TBA) Tert-Butyl Alcohol ND 2.5 Ug/L i Methyl Tert-Butyl Ether (MTBE) ND 0.5 ug/L Diisopropyl Ether (DIPE) ND .0.5 ug/L Ethyl Tert-Butyl Ether (ETBE) ND 0.5 ug/L Tert~Amyl Methyl Ether (TAME) ND ' 0.5 ug/.L I BTEX Components I Benzene ND 0.5 ug/L Toluene ND 0.5 u~L Ethylbenzene 1.3 0.5 u~L I m & p Xylenes ND 0.5 ug/L o Xylenes 1.2 0.5 ug/L Internal Standards Results % Recovery Benzene, fluoro 50.0 100% Benzene-d5, chloro- 50.0 100% 1,4-Diohlorobenzene-d4 50.0 100% Surrogate Standards Methane, dibromofluoro- 52.8 106% 1,2-Dichloroethane-d4 50.3 101% Toluene-d8 49.4 99% >Bromofluorobenzene (BFB)' 54.8 110% Halcyon Laboratories, :[nc. EPA 8260B Laboratory Report Water Sample Results in ug/L I Certification Ct 1920 ' ICLIENT: E2C Remediation, LLC 5300 Woodmere Drive, Suite 105 I Bakersfield, CA '93313'. ' Project ID · Mr Fast · l 'Report Date' 12/17/2002 I Sample ID · 4120/MW-14 I Analyte Result Method RL Units i 5 Oxygenates t-Butanol (TBA) Ter:t-Butyl Alcohol ND' 2.5 ug/L i Methyl Tert-Butyl Ether (MTBE) ND 0.5 ug/L Diisopropyl Ether (DIPE) ND 0.5 ug/L Ethyl Tert-Butyl Ether (ETBE) ND 0.5 _u~L Tert-Amyl Methyl Ether (TAME) ND 0.5 u~L - I BTEX Components I Benzene 3.1 0.5 ug/L · Toluene 18 0.5 ug/L Ethylbenzene 16 0.5 ug/L I m & p Xylenes 42 0.5 ug/L o Xylenes 59 0.5 ug/L Internal Standards Results % Recovery I Benzene, fluoro 50.0 100% · Benzene-d5, chloro- 50.0 100% i 1,4-Dichlorobenzene-d4 50.0 100% Surrogate Standards Methane, dibromofiuoro- 42.6 85% 1,2-Dichloroethane-d4 44.9 90% Toluene-d8 48.0 96% I prBromofluorobenzene (BFB) 49.0 98% Halcyon Laboratories ]:nc.' EPA 8260B Laboratory Report Water SamPle Results in ug/L Certification # '1920 ' ~ I CLIENT: Remediation, LLC E2C - 5300 Woodmere Drive, Suite 105 I Bakersfield, CA 93313 Project ID · Mr Fast I Report Date · 12/17/2002 I SamPle ID · 4121/MW-12 I Analyte Result MethOd RL Units i 5 Oxygenates t-Butanol (TBA) Tert-Butyl Alcohol ND 2.5 ug/L Methyl Tert-Butyl Ether (MTBE) ND 0.5 ug/L I Ether ND 0.5 ug/L DiiSOpropyl (DIPE) Ethy~ Tert-Butyl Ether (ETBE) ND 0.5 ug/L. Tert-Amyl Methyl Ether (TAME) ND 0.5 u~L I BTEX Components I Benzene ND 0.5 ug/L Toluene 430 0.5 ug/L Ethylbenzene 1,500 0.5 ug/L I m & p Xylenes 2,950 0.5 ug/L o Xylenes 2,250 0.5 ug/L I Internal Standards Results % Recovery I Benzene,.fluoro 50.0 · · 100% Benzene-d5, chloro- 50.0 100% i 1,4-Dichlorobenzene-d4 50.0 100% Surrogate Standards I Methane, dibromofluoro- 51.2 102% 1,2-Dichloroethane-d4 54.1 108% Toluene-d8 48.4. 97% I p-Bromofluorobenzene (BFB) ' 54.8- 110% Halcyon Laboratories, ]:nc. EPA 8260B Laboratory Report Water Sample Results in ug/L Certification # 1920 CLIENT: 'E2C RemediatiOn, LLC 5300 WOodmere Drive, Suite 105 Bakersfield, CA 93313 Project ID · Mr Fast Report Date · 12/17/2002 SamPle ID · 4122/MW-1 I Analyte Result Method RL Units .1' 5 Oxygenates t-Butanol (TBA) Tert-Butyl Alcohol ND 2.5 ug/L i Methyl Tert-Butyl Ether (MTBE) ND 0.5 ug/L Diisopropyl Ether (DIPE) ND 0.5 ug/L Ethyl Tert-Butyl Ether (ETBE) ND 0.5 u~r~ Tert-Amyl Methyl Ether (TAME) ND 0.5 ug/L I BTEX Components I Benzene ND 0.5 ug/L Toluene. 19 0.5 ug/L Ethyl benzene , l, 180 0.5 ug/L I m & p Xylenes 830 0.5 ug/L o Xylenes 310 0.5 ug/L I Internal Standards Results % Recovery I Benzene, fluoro 50.0 100% Benzene-dS, chloro- 50~0 100% i 1,4:Dichlorobenzene-d4 50.0 100% surrogate Standards IMethane, dibromofluoro- 49.9 100% 1,2:Dichloroethane-d4 50.2 100% Toluene-d8 47.4 95% I p-Bromofluorobenzene (BFB) 48.3 97% I ~Halcyon Laboratories, ];nc. EPA 8260B Laboratory Report Water Sample Results in ug/L Certification # 1920 .~ I CLIENT: EzC Remediation, LLC 5300 Woodmere Drive, Suite 105 I Bakersfield, CA -93313 P~'oject ID · Mr Fast I Report Date · 12/17/2002 I Sample ID · 4123/MW-7 I Analyte Result f4ethod RL Units 5 OXygenates I t-Butanol (TBA) Tert-Butyl Alcohol ND 2.5 ug/L Methyl Tert-Butyl Ether (MTBE) ND 0.5 ug/L I Diisopropyl Ether (DIPE) ND 0.5 ug/L Ethyl Tert-Butyl Ether (ETBE) ND 0.5 ug/L Tert-Amyl Methyl Ether (TAME) ND 0.5 uodT, I BTEX Components I Benzene ND 0.5 ug/L Toluene 1,180 0.5 ug/L Ethylbenzene 4,260 .0.5 ug/L i m & p Xylenes 2,610 0.5 ug/L o Xylenes , 2,020 0.5 ug/L I Internal Standards ' Results % Recovery I Benzene, fluoro 50.0 100% Benzene-dS, chloro- 50.0 100% i 1,4-Dichlorobenzene-d4 50.0 100% Surrogate Standards I Methane, dibromofluoro- 49.2 98% 1,2-Dichloroethane-d4 47.9 96% Toluene-d8 .44.8 90% Ip-Bromofluorobenzene (BFB) 49.3 99% . . Halcyon Laboratories, Inc. EPA 8260B Laboratory Report Water Sample Results in ug/L Certification # 1920 · I EzC Remediation, CLIENT: LLC 5300 Woodmere Drive, Suite 105 I 'Bakersfield, CA 93313 Project ID · MrFast I Report Date · 12/17/2002 I Sample ID · 4124/MW-8 I Analyte Result Method RL Units 5 Oxygenates I t-Butanol (TBA) Tert-Butyl Alcohol . ND 2.5 ug/L Methyl Tert-Butyl Ether (MTBE) ND 0.5 ug/L I Diisopropyl (DIPE) ND 0.5 - ug/L Ether Ethyt Tert-Butyl Ether (ETBE) ND · 0.5 ug/L Tert-Amyl Methyl Ether (TAME) ND 0.5 ug/L- I BTEX Components I, Benzene ND 0.5 ug/L Tel uene 19,900 0.5 ug/L Ethylbenzene 1,270 0.5 ug/L I m & p Xylenes ?,880 0.5 ug/L o Xylenes 6,500 0.5 ug/L Internal standards Results % Recovery I Benzene, fluoro 50.0 100% Benzene-dS, chloro- 50.0 100% i 1,4-Dichlorobenzene-d4 50.0 100% Surrogate Standards I Methane, dibromofluoro- '44.8 90% 1,2-Dichloroethane-d4 49.5 99% Toluene-d8 43.3 87% i p-Bromofluorobenzene (BFB) 50.8 102% I , Halcyon Laboratories, :[nc. EPA 8260B Laboratory Report Water Sample Results in ug/L certification # 1920 I CLIENT: LLC EzC.Remediation, 5300 Woodmere Drive, Suite 105 I Bakersfield, CA 93313 Project ID · Mr Fast I Report Date · 12/17/2002 I Sample ID · 4125/MW-11R I Result Method RL Units ' Analyte i 5 Oxygenates t-Butanol (TBA) Tert-Butyl Alcohol ND 2.5 ug/L Methyl Tert-Butyl Ether (MTBE) ND 0.5 ug/L I Diisopropyl Ether (DIPE) O.5 Ethyl Tert-Butyl Ether (ETBE) ND 0.5 ug/L Tert-Amyl Methyl Ether (TAME) ND 0.5 ug/L I BTEX CompOnents · I Benzene ND 0.5 ug/L Toluene 29,150 0.5. ug/L Ethylbenzene ND 0.5 ug/L I m & p Xylenes 2,440 0.5 ug/L o Xylenes 6~490 0.5 ug/L Internal Standards Results % RecOvery I Benzene, fluoro 50.0 100% Benzene-d5, chloro- 50.0 100% i 1,4-Dichlorobenzene-d4 50.0 100% Surrogate Standards I Methane, dibromofluoro- 57.0' 114% 1,2-Dichloroethane-d4 51.7 103% Toluene-d8 42.7 85% I p-Bromofluorobenzene (BFB) · 50.2 100% I Hal .Cyon LabOratories, Znc; EPA 8260B ' Laboratory Report water Sample Results in ug/L I Certification # 1920 . I E2C Remediation, LLC CLIENT: 5300 Woodmere Drive, Suite 105 I ' Bakersfield, CA 93313 Project ID · Mr Fast I Report Date: 12/17/2002 I Sample ID · 4126/MW-13 I · Analyte Result Method RL Units i {5 Oxygenates t-Butanol (TBA) Tert-Butyl Alcohol ' ND 2.5 ug/L Methyl Tert-Butyl Ether (MTBE) ND 0~5 ug/L I Ether (DIPE) ND 0.5 ug/L Diisopropyl Ethyl Tert-Butyl Ether (ETBE) ND 0.5 u~L Tert-Amyl Methyl Ether (TAME) ND 0.5 u~L I' BTEX Components I Benzene 14 0.5 -ug/L · Toluene 7,020 0.5 ug/L Ethyl benzene 1,980 0.5 ug/L I m & p Xylenes 3,900 0.5 ug/L o Xylenes ' 4,520 0.5 u~L Internal Standards Results % Recovery Benzene, fluoro 50.0' 100% Benzene-d5, chloro- 50.0 100% 1,4-Dichlorobenzene-d4 50.0 100% Surrogate Standards Methane, dibromofluoro- 52.1 104% 1,2-Dichloroethane-d4 53.9 108% Toluene-d8 42.3 85% p-Bromofluorobenzene (BFB) '50.0 100% Halcyon Laboratoriesf ]:nc. EPA 8260B Laboratory Report Water Sample Results in ug/L · certification # 1920 CLIENT: Remediation, LLC EzC 5300 Woodmere Drive, Suite i05 Bakersfield, CA 93313 Project ID · Mr Fast , Report Date~: 12/17/2002 Sample ID · 4127/MW-19 Result I~lethod RL Units Analyte 5 Oxygenates t-Butanol (TBA) Tert-Butyl Alcohol ND 2.5 ug/L Methyl Tert-Butyl Ether (MTBE) ND 0.5 ug/L Ether ND 0.5 ug/L Diisopropyl (DIPE) Ethyl Tert-Butyl Ether (ETBE) ND 0.5 u~L Tert-Amyl Methyl Ether (TAME) ND 0.5 ug/L . BTEX Components Benzene 20 0.5 ug/L Toluene 7,660 0.5 u~L Ethyl benzene 5,520 0.5 ug/L m & p Xylenes 4,150 0.5 uCL o Xylenes 4,960 0.5 ug/L I Internal Standards Results % RecoverY I Benzene, fluoro 50.0 100% Benzene-d5, chloro- 50.0 100% I 1,4-Dichlorobenzene-d4 50.0 100% . · SUrrogate Standards IMethane, dibromofluoro- 51.5 103% 1,2-Dichloroethane-d4 52.7 105% Toluene-d8 42.5 85% 'l p-Bromofluorobenzene (BFB) 52.7 105% January 21,2003 ' Mr. & Mrs. Ki Chu Yi '% Mr. Fast Service Station "-.- 600 Brundage Lane Bake[afield, CA 93304 Subject: Fourth Quarter 2002 Groundwater Monitoring RePort, Onsite Remedial Status RePort, and Implementation of Offsite RAP Mr. Fast Service Station 600 Brundage Lane Bakersfield, California Dear Mr. & Mrs. Yi: E2C Remediation, LLC (E2C) has completed Fourth Quarter 2002 Groundwater Monit. oring at the property identified as the Mr. Fast Service Station at600 Brundage Lane (Site), Bakersfield, California. Trenching and piping installations and construction of the equipment pad and enclosure for the 0ffsite soil and groundwater remediation system were also completed. The enclosed report documents the work performed and the results. The status of on-site soil and groundwa[er remediation using soil vapor .extraction and air sparging and installation of elements of the offsite RAP are also included in'this report. It is a pleasure to be of service to you, should you have any questions regarding this submittal, do not hesitate to call either of d at 661-831-6906. t~ Respectfully Submitted, ' ............ '' "~"';".-:' ~ ~----'~',-,~" Mark W. Clardy, R.G. ff705 ~~' ~A ;~X , - X.W~?ip Go,~,n, ,.G. ~4779 Senior Geologist ~~o~'/ X '~ ,. ~**. ~77~, ./.~ / Principal Hydrogeologist CC: Mr. John Whiting, R.G. Mr. Howard Wines, R.G Associate Engineering Geologist Hazardous Materials Division California Regional Water Quality Control Board City of Bakersfield Fire Department Central Valley Region : 1715 Chester Avenue 1685 "E" Street Bakersfield, CA 93304 Fresno, CA 93706~ E2C REI"IEDIATION, LLC ENVIRONPIENTAL/ ENGINEERING CONSULTANTS S i n-c e I 9 7' 0 ' 5300 X,Voodmcre Drive,, Suite 105, Bakersfield, CA 93313 Tel: 661.83t.69(J6 Fa"x: 661.831.6~-3'i Toll Free: 800.339.4952 Corporate Offlcc: 3'82 Martin Avenue, Santa Clara, CA 95050 Tel: 408.327.5700' Fa.x: 408.327.5707 Emaih E2C. Rcmediation. LLC@sl~cglobal.n¢t · O California Regi0nalcentralWatervalleyQUalitYRegion Control Board Winston H. Hickox Robert Schneider, Chair Gray Davis Secretary for Fresno Branch Office Governor Environmental Intemet Address: http://www.swrcb.ca.gov/~rwqcb5 Protection 1685 E Street, Fresno, California 93706-2020 Phone (559) 445-5116 · FAX' (559) 445-5910 16 January 2003' RWQCB Case No. 5T15000619 Mr. Ki Chu Yi Mr. Fast Service_Station ....... ~--- 600 Brundage Lane Bakersfield, CA 93304 UNDERGROUND STORAGE TANK RELEASE, MR. FAST SERVICE STATION, 600 BRUNDA GE LANE, BAKERSFIELD, KERN COUNTY By a letter dated 15 January 2003, your consultant, E2C Inc. (E2C), requested an extension for submission of the Fourth Quarter 2002 groundwater monitoring and remediation Status report (monitoring report). Our letter dated .18 October 2002 requested that you submit remediation system · performance data for October 2002 by 21 November 2002. Quarterly groundwater monitoring reports are typ!cally due the first day of the second month following the end of the calendar quarter. We grant the requested extension. Please submit the monitoring report by 3 February 2003. If you have,any questions regarding this matter, please contact Mr. John Whiting of this office at (559) 445-5504. The Fresno office relocated to 1685 E Street, .Fresno, California 93706-2020 on 4 November 2002. Our '. .... m_ain te[e_phone _nu_rn~b_er_o f_( 559) 445-5116 and ~fax number_of (55.9_)_~4_45,5910 _will remain-the-s ame,- as --- - will telephone numbers of staff. Please direct correspondence to our new address. JOHN D. WHITING Engineering Geologist R.G. No. 5951 cci Ms. Barbara Rempel, State Water Resources Control Board, UST CI'eal3up Fund, Sacramento Mr. Howard Wines 111, City of Bakersfield Fire Department, Bakersfield Mr. William Lawson, E2C Inc., Bakersfield California Environmental Protection Agency Recycled Paper January 24, 2003 Mr. Bob TroTTer State Water ResOurces control Board underground Storage'Tank Cleanup Fund . 1001 I Street, 17th Floor P.O. Box 944212 Sacramento, California 94244-2120 'RE: Claim ~#8443 ' Mr: Fast Service Station, 600 Brundage Lane, Bakersfield, CA 93304 · Dear Mr. Tr0mmer: - Pursuant to Our conversation this date, January 14, 2003, please find enclosed the following information you requested regarding the Pay for performance for the off-site remediation at the Mr. Fast site: · Site Plan (Figure 2 from Fourth Quarter 2002 GrOundwater Monitoring Report, dated January 21,2003) showing off-site PFP boundaries with list of Key Wells and Perimeter Wells (Note: Key and Perimeter Wells are listed and shown on the Figure); ·Summary.of Current groundwater analytical data (Table .1 from Fourth Quarter 2002 GrOundwater Monitoring Report); :.. :" ':'..~.. '- · Summary of historical groundwater analytical data(Table 2 from Fourth Quarter 2002 Groundwater Monitoring Report); and .· Detailed cost estimate for the off-site remediation. 'Upon receipt of a PFP Contract acceptable to E2C Remediation,'LLC (E2C), the State Fund, and 'the RWQCB, E2C will schedule an off-site baseline PFP groundwater sampling event. The the 'split' groundwater samples from the Key Wells RWQCB will be present to collect required · and that data will be forwarded to you immediately'upon receipt. Please find following a propOsed payment schedule: PARG STATUS · PAYMENT SCHEDULE · Startup 25% · ' 25% ReduCtion 10% · 50% Reduction 10% · .60% RedUction 10% · '75% Reduction .10% · 90%RedUction . 10% 100% Reduction 10% · After one year 15% E2C REIflEDIATION, LEe . ENV.IRONt4ENTAL / ENGINEERING CONSULTANTS .. S i 'n c e 1. 9 7 O 5300 \Voodmere Drive,, 'Suite.105, Bakersfield, C~ 93313 . Tel: 661.831.6906 . Fmc: 661.831.623'i Toll Free: 800.339.4952 Corporate Office:'382 Martio Avenue, Santa Clara, CA 95050 . Tel: 408.327.5700 Fa.~i ~08.327.5707 Email: E2C. Remediati0n. LLC@sl~cglob~d.nct Pr° iect Number 1577BK04 ~. January 24:2003 Note: The RWQCB is quite 'ar~xious to begir) off-site remediation at this site. As 'suCh, E2C will begin the procurement of equipment necessary to accomplish the off-site remediation, as we are confident that a mUtually acceptable contract wilt be negotiated in the near future. Thank you for your assistance'i Please contact either of the undersigned at (661) 831-6906 if' further information is needed. Respectfully Submitted,. ,,/'~' ' .. --(k.~~~~ .,~,~,~ ~.,/~~,. ~.~ E2C ~emediation, LLC J × ' William-A. Laws'~R.G~ #71~' . . F~hilip Go~lwin,'R.G. #4779 Director of Technical Operations. .. President cc: Mr. & Mrs. Ki Chu Yi 600 Brundage Lane Bakersfield;.CA 93304: ,' Mr. 'Howard Wines Bakersfield Fire Department 1715 C ~hester Avenue Bakersfield, CA 93304 Enclosures: site Plan with PFP boundaries, Key Wells and Perimeter Wells Table 1 - Summary of Current Groundwater Analytical Data Table 3 - Sum'mary of historical groundwater Analytical Data Detailed Cost Estimate for Off-Site Remediation I E~C Remediation, I,LC 2 LEGEND 2,, Monitoring Well Location --~ Monitoring Location Shallow Well I I Deep Monitoring Well Location . · Abandoned Well Location APi',]: 011'-034 -05 V Vapor Extraction Well Location "T" S!ree~ ' I [] Air Sparge Well Location ~ ~ BM Benchmark MW-2 AS.1 VE-1 VE-4~~-~h- MW-4 ....... i ] APN: 01' ~-032-16 MW-6 MW-3 -1 - ' MW-5 Srur, dage k~ne - +396,41 MW-6 IOFF-SITE PFP BOUNDARYI ~- ----~ / MW-110 - ': AS 6 - : 'AS-7 KEY WELLS: -~ Mw-?, MW-11R, MW-I~, a.a MW-I~ \ M'W-14 i ' PERIMETER WELLS: , -- ::: ~,,~,~,~-'-~- .... MW-13 ' ~---------~ AS-6 [] ~~'-'-~" \ \MW-17D 0 I 80 'l~vC'f8 -- SCALE: 1 inch = 80 feet E2C Remediation, LLC MR. FAST SER¥1CE STATION 600 BRUNDAGE LANE FIGURE 5300 Woodmere Dr., Suite 105 BAKERSFIELD, CA. . Bakersfield, California 93313 ~-~ Tel(~phone: (661) 831-6906 .. 'Facsimile:' (661)831-6234 SITE PLAN ! prOject Number 1801BK04 January 21, 2003 TABLE 1 SUMMARY OF FOURTH QUARTER 2002 GROUNDWATER MONITORING RESULTS Mr. Fast Service Station 600 Brundage Lane, Bakersfield,. CalifOrnia December 5-6, 2002 WELL ID DATE WATER ELEV. ELEV. . ...................................................................................... , .................................. ~ .................................. : ............... : .................................... " (feet BTOC) (feet) (feet MSL) (feet MSL) pg/L MW-!.. · .~12/5702 , ~ _4_3:_1~ 394~03 3.50.8.5 nd_<~:_5_ ....... 1_9. ....... ! ~180 ..... 1_..._1_f¢.0 ....... .1-0,630 . ~d?_2~.5 MW-2 _. 12/5/02 43.09 395.01 35_1.9~ ..... n_d~0._5__ 0d%0:5 ..... 1.3 .... i_'..!_:..2 ........ _2.20 .... nd<2:.5 .... n_d~0_;5 MW-3 . 1.2/5_/_02 ._43.~6 ..394.64. 351.18 .... n~_<_0:5_.._ nd_<_9:5 ....... 2_..! ............. _2:~_ ......... _70 .... nd_<2:.5 ...... n._dy_0..._5 _ ._ nd_~0:_5 ...... _nd_<_.°:_5 ..... n_.d~_O._5.._ MW-~. _~12/5/0~2 43.70 . . 394.!_4 . 350.4.4_ ._ _ nd_<.0._5_ _9 d_<_0_.. .5__ ..... .od<_0.5 ........ 0_:_6............... ~ ~ 0 ._. _ n.d<_2. MW-5 12/5/02 44.02 393.43 .349.41 nd<0.5 nd<0.5 1.5 nd<0.5 100 nd<2.5 nd<0.5 nd<0.5 . nd<0.5 nd<0.5 MW-6 12/5/02 42.05 393.76 351~71 nd<0.5 nd<0.5 1.3 1.5 nd<50 nd<2.5 nd<0.5 nd<0.5 nd<0.5 nd<0.5 MW-7 12/5/02 44.48 393.63 349.15 .n~1_<.-0.5.. 1_ 18_0.. _4 260 . 4 630 ........ ~.3 909. . nd~._2:~_ _ nd~.O.5 ..... n_d.~p._5__~ _ n_d<0.:_5 ..... ~d.~<0.5 M~/78 . !.2/6/02 .. 43.95 .... 393._95 . 350~00_ _ n_~<_0.5_ __1__9.,_990 ..... .1.,._2..._7_.0_. ...... 14,_3~80 ._ 54,-00_0 _ ~ nd<~:_5_ ..... _nd_<_9._5- _ n_d<_0.5 ___n_d~<0_.~5_ ..... _n_~0:.5' MW-9 12/5/02 44.50 394.05 349.55 nd<0.5 nd<0.5 2.2 5.3 nd<50 nd<2.5 nd<0.5 nd<0.5 nd<0.5 nd<0.5 MW-10 12/5/02 44.88 392.91 348.03 nd<0.5 nd<0.5 1.3 2.8 160 nd<2.5 nd<0.5 nd<0.5 nd<0.5 nd<0.5 MW-11 Well taken Out of Servi~e' -Replaced.bY MW-11R ' Well taken out 9f s_e. ~ice ~- Rep_laced_~by MWt?~l..R_.,_th_e__n_.c_o_n_?.rt_.e_d_i~nto~'_V_E well uW~-i2 .... 12)5~62 ..... 4~.0-2' .......... 392~06' 347.04 nd<0.5 430 1,500 5,200 7,910 ' nd<2.5 nd<0.5 nd<0.5 nd<0.5 nd<0.5 M_w_-~I_3 ........ i1~6(.02_ ......... 4_8:7_0 ............. _3~_2.0.0~ 343.3_0` ........ ~!__4_ ....... _7_;0_2_o- .... 1,98_0 .... ~;_42_0___ 4__0_,_9_0_0. __n.d~.~ ..... _n_ d_<_o ._5_- ____n_d_<.9~ _nde9_..5__ _~_d_<0~.5~_ dgp!!c_~.t.e 2_0._ ...... 7.:6_~9 ........ _5 ;52__0- ........ _9,_.1_ _1_ _0_ ....... ._3..8_,_0_0_0. ..... ..nd<2.._5_. _. ~_d <0.._5 __[~d<_0:.~._i __od~_O_.~5 ..... __nd_<_o_._5__ MW-14_ 12/5102_ 68.33 39._1:~5 323.32 ........ 3_1. .... 18 .... )6 ......... _1_0! _!,860_._l_nd<2-~ ..... _n_ds°_.~ ..... _n..d_<_°-5_ ! ~d_<0.-_5____n.d_<_°:5 MW-15D 12/5/0._2_ dry 390.72 ......... NSWD MW-.17D , 12/5/02 dry 390.91 . NSWD MW-18 12/5/02 114.40 '7.1 I nd<0.5 I 2.0I 0.8 I nd<50 I nd<2.5 I nd<0.5 I nd<0.5 I nd<0.5 I nd<0.5 Notes: ' Duplica{e of MW-13 labeled as MW-19 on Chain-of-Custody MtBE = Methyl tertiary-Butyl Ether Results in micrograms per liter (,ug/L) = parts per billion (ppb) NA = Not analyzed B = Benzene. nd = Below Practical Quantitation Limits: BTEX-0.5 pg/L, TPHg-50 #g/L, and MtBE/DIPE/ETBE/TAME-0.5,ug/L; TBA-2.5 ~g/L BTOC = Below Top of Casing NSWD = Not Sampled; well dry I DIPE = Diisopropyl Ether · NSFP = Not Sampled, free-product present E = Ethylbenzene T = Toluene ETBE = Ethyl Tertiary Butyl Ether TAME = Tertiary Amyl Methyl Ether F-P --- Free-Product Thickness TBA = Tertiary Butyl Alcohol GW = Groundwater GW Elevation corrected for Free Product using formula: GW Elev = Reference Elev -[Depth to Water - (Product Thickness)(0.8)] . E2C RemediatiOn, LLC Ti-1. Project Number 1801BK04 January 21, 2003 TA]BLE 3 SUMMARY OF HISTORICAL GROUNDWATER ANALYTICAL DATA MR. FAST SERVICE STATION 600 Brundage Lane Bakersfield, California WELL Io. DATE [ ...... (pg/L) ........ ...... ....... ...................................... ' .......................... ............... 4/5/96 UA ..... ..N_A ........ Nh_. UA NA NA NA NA UA NA NA -~/'2-'~/~97 i'7--0 27,000 5,000 30,000" 210,000 NA NA 22,000 NA NA NA 8/20/99 NSFP NSFP NSFP NSFP NSFP UA NA NA uA . UA UA Mw-i 1-~)(~i .... nd<20 " 4'1~ ~80 19,700 i~',-89-0- - U~,- .......~c~'2-0-0 ......... -~6 . nd<20 nd<20 nd<20 1/3/01 (Dup) nd<20 710 1,400 18 17,930 NA nd<200 ' nd<20 nd<20 nd<20 nd<20 3/2/01 NSFP NSFP NSFP NSFP NSFP NSFP NSFP NSFP NSFP NSFP NSFP · . ~/-4/0-1- .......... ~01-0 ..... ~3~,-0 -' ...... ~ ,-6-i0 8;050 ' -' -6~i~:~,-0 .......... ~N-A- nd<250.0 nd<S0.0' nd<50.0 nd<50.0 nd<50.0 8~6~0 ~- nd<50.0 585 830 7,760 33,500 NA nd<250.0 nd<50.0 nd<50.0 nd'<5~:0- nd<S0.0 '.- 12/6/01 nd<0.5 nd<0.5 230 5,280 73,890 NA nd<2.5 nd<0.5 nd<0.5 nd<0.5 nd<0.5 2/18/02 NSFP NSFP NSFP NSFP NSFP NSFP NSFP NSFP NsFP NSFP NSFP 5/16/02 nd<0.5 3.5 0.6 183 ._ .~]__2_8__;6_0_0- ........... N~A 5_00- ....... n_d<J~:5_._., nd<0.5 nd<0.5 nd<0.5 ..... 8/_21__/0~ . ~d-<o.,~ 700 55 385 42 000 UA nd<2.5 nd<0.5 "nd<0.5 nd<0.5 nd<0.5 E2C Remediation, LLC T3-1 Project Number 180i. BK04 ,January 21, 2003. TAE~LE 3 · SUMMARy OF HISTORICAL GROUNDWATER ANALYTICAL DATA MR. FAST SERVICE STATION ~ " 600 Brundage Lane Bakersfield~ California · B ' T E X TPHg I TPHd I TBA I MtBE I DIPE '1 ETBE I TAME WELL ID DATE I : , (Pg ') ' ' ' ' " ' 4/5/96 <0.3 <.3 <0.3 <.03 <50.0 NA NA NA NA NA NA 3)27-/~97: - ' 1.0 .6.~ 10/~0/9E~' <0.5 <0.5 <0.5 <0.5 <50 NA NA · <0,5 UA NA NA _~ ....... 1i1~1~)~9 ..... <0.5 . - .... _<0.5 <0.5 <50 NA NA <0.5 NA NA_ .... NA<0.5 NA 5/12/99 <0.3 8/20/99 <0.3 ' <0.3 <0.3 <0.6 <500 NA NA <2.0 NA NA NA ' ' -'1' ~7-/9~) ...... <b.3 <0.3 <0.3 <0.6 <500 NA UA <2.0 NA NA ~NA 7)3/05 '<0.5 <0.~ .... <0-15- .......... ~'5-i`5 ..... <55 ' NA NA <0.5 ' NA NA NA MW-2 i/3~5'i-' ~ ..... nd<0.50 3i~/~'i : "r~d-<0:50 nd<5~,50 ' ' r~d<-5~'50 6/4/01 nd<0;5 nd<0.5 nd<0.5 nd<0.5 nd<50 NA nd<2.5 nd<0.5 nd<0.5 8/~)~3~:" - 'nd<0.5 nd',~0.5 ' nd~b~5 ......... n(~0~5 ..... : fl~l-~5 ...... -N-~,' . ~<:~:~- '--~d~5~ ....... ~-'- n'c~:-5:5' nd<0.5 · 12/6/01 nd<0.5 '2156 nd<0.5 nd<0.5 90 NA nd<2.5 nd<0.5 nd<0.5 ' nd<0.5 nd<0.5 .. 2)-18i-0-2- 8/21/02 1.2 5.2 .... 1.:.7__ ............ _5_.0_ ..... 390. ......... _N_A .._n_d_<_2.5 ....... n_d_<?_._5_.. _'__n_d~0:5: ..... _nd_<_0:~ _ _._n__d_<~0:._5__ 12/5/02 nd<0.5 nd<0.5 1.3 1.2 220 NA nd<2.5 nd<0.5 nd<0.5 nd<0.5 nd<0.5 E2C Remediation, LLC~ . . T3-2 Project Number 1801BK04 . Jan u arY 21, 2003 TABLE 3 SUMMARY OF HISTORICAL'GROUNDWATER ANALYTICAL DATA MR. FAST SERVICE STATION 600 Brundage Lane Bakersfield, California I 'B T I E I X TPHg I TPHd* I .TeA ! MtBE DIPE ETBE I TAME WELLID DATE I~ ......................... . ' ............. ; ........... ' ........................ ~ .......................... ' '(pg/!:~ ...... '""' ......................... . '~ ....... .................. ' ' ...................... ' ...................... ' 4/5/96 41 42 35 3,000.00 . _87.6._0_ _0- ........ N_~ ......... _NA ........... _N_A.. I~!A NA NA 3i2~':~)~ .... :~-7 ..... 8:4~ .... --.i7-0 i,~ 0'5 !_~00_0_ _N_A ......... _N.A_ .......... N_A .. NA' NA UA . 10/20-/98 4.6 ' <0.5 ' ' ~;90 53.0 1:3~_0 ......... NA -NA 3.8 NA ' i~1~ .......... :1)'1:1-/~)' 4-0 .... ~'6.-00- (:j:6~' 180 . .. _8__,_2_0_..0_ ....... __N.A- ............ _N_A_ ............ _65;0 NA NA UA 5/12/99 '8.36` <0 3 <0.9 42'1 14,300 NA NA 69.4 NA ' NA UA ' 8)2~(~i99 * '<-~.3-' ' <0.3 <0.3 <0.6 <500 NA NA <2.0 ., 1~)'9'9' <0.3 <0.3 <0.3 i.38 <500 .NA NA <1.0 U~' ..N_A .......... N_A ..... 3/30/00 1.04 2.06 <0.3 89.60 1,020 NA NA <0.5 NA NA NA · -7/3/00 -- <5-b.0 .... <(-~.'5- ' <O.~ <6.5- <5-(~ ........... ~1-~,- ..... -~,- ...... <~0.-~-' ~'A MW.3 1/~)01 nd<0.50' 'n~i;:6'.5-° nd;°.50 , nd<0.50 nd-~5~)- ........ N-A ....... ~- ~ci~)';50 nd<O.,~0 n c~<-(~-5-0~'- ' 3/2Jb-1'" nd<0.5-O n~l<0.50 r~d-<°~50- !0. '.5;7~6~ii';..,-UA ..................................... -:--'"~a'~ ..... ~-~b-.56-' nd<0.50 'nd~b'i~0 ........................ ..... nd-~-~.~)-- 6i4/6~ "' <510 -<~.0 -<5.0" <5.0 383 NA ' nd<2.5 nd<0.5 nd<0.5 nd<0.5 nd<0.5 ,.. d_up_. _. <~5_.0 . .-~5.0. <5.0 <5.0 388 . 'NA nd<2.5 nd<0.5 nd<0.5 .... _nn.d_,~o.~5.- ..... n~d~0:5.. 8/6/01 nd<0.5 nd<0.5 nd<0.5 nd',~).5~ - nd<50 NA ' nd<2.5 nd<0.5 nd<0.5 nd<0.5 nd<0.5 12/6/01 n8-~0.~5 ' ' '1.0~6 ' nd<0.5 nd<0.5 515 NA nd<2.5 nd<0.5 nd<0.5 nd<0.5 nd<0.5 dup nd<0.5 0.92 nd<0.5 nd<0.5 380 NA nd<2.5 nd<0.5 nd<0.5' nd<0.5 nd<0.5 2/18/02 19 55 N D 25 ..... i-;'i-~3 ...... ~A ...... -nd<2.~ -' -n~;8.~ nd<0.5 nd<0.5 . nd<0.5 '5):1-~/0~ ~(J<6~' " nd<oi~ nd<0.5 nd<0.5 nd<SO NA nd<2.5 nd<O.5 nd<0.5 nd<O.5 nd<O.5 E2C Remediation, LLC T3-3 prOject Number 1801BK04 January 21, 2003 TABLE 3 SUMMARY OF HISTORICAL GROUNDWATER ANALYTICAL DATA MR. FAST SERVICE STATION .600 Brundage Lane Bakersfield, California B T E I X · TPHg I TPHd I TBA / 'MtBE DIPE I~ ETBE I 'TAME ,, (pg/L) , 4/5/96 <0.3 <0.3 0.75 260 1,800 NA NA NA NA NA NA 3/27/97 2.00 20.0 1.10 9.8 340 NA NA NA NA NA ' NA '1lJ~2l~)98 15 ~-5~ ' ' 87 930 3,000 NA NA 300 NA' NA NA 1)--i :i-/99' ' ' <0.5 <0'.5 <0-.5 ....... ~(~i~-: - ~-b- ....... N~ - N~ ........... ~]~ ....... "5~-~9~ 58.7 g. 8~ 388 1,040 13,600 NA N~": -- 524.0 NA -"~' ' 8/20/99. <0.3 <0.3 <0.3' <0.6 <500 .NA 'N~ ...... 3.47 NA NA NA 1~/99 <o.3 <o.3 <o.3 1.~ 1 <5oo NA NA .......... ~;~ ......... 3/30/00 <0.3 <0.3 < 0.3 <0.6 <500 ~A NA <0.5 NA NA NA ' 7/-3)60 ..... <o.5 <0.5 -- '<~.5- ....... ~b.~ ......... <~0 ~. N~ ............ :--<-6~ MW-4 1/3/01 nd<0:50 nd<0.50 nd<0.50 nd<0.50 nd<50 NA n~5 ........ ~0.50 3/N01 nd<0.50 nd<0.50 nd<0.50 nd<0.50 nd<50 . NA nd<5 nd<0.50 nd<0.50 nd<0.50 nd<0.50 8/6/01 nd<0.5 nd<0.5 nd<0.5 nd<0.5 nd<50 N~ nd<2.5 nd<0.5 nd<0.5 nd<0.5 nd<0.5 ' 1~)5~- 6.44 ~9-5' .... ~5 ..... -~9--~- ...... 2,21~- ......... ~A nd<2.5 nd<0.5 nd<0.5 nd<0.5 nd<0.5 ~i8/~ 54 230' '4.~ .... ~' ' ~-~0 ..... ~A' nd<2:~ "'~'-~-~-~- ...... ~<~ - -'~d-~'.'~- ~<~'~5 ' ~/i'6/0~ " 1.2 ' 4~ ........ 2.2 ......... 50 ........ -~ ........ NA nd~2~ ....... ~.~- .... nd-<~.~'--" ~d~-- nd<0.5 ':'~/~)0~'' I 4'.3 .... i.~ ....... 4~- .............. ~5b ' ' - NA nd<2.~ ....... n~-o~'- 7'-'n~'"- n-d<o:~ ...... ~d~.~ 1'~5/02 nd<0.5 nd<0.5 n~0.5 .... oL~ ....~-~5 ....... ~-A nd<2.5 ...... ~d~-' ~<-0~' E2© Remediation, LLC T3-4 Project Number 1801BK04 January 21, 2003 · ' TABLE 3 SUMMARY OF HISTORICAL GROUNDWATER ANALYTICAL· DATA MR. FAST SERVICE STATION . . 600 Brundage Lane : Bakersfield, California ·B T E / X T..g t' T""dl TBA /MtBE DIPEI ETBE I TAME .WELL ID DATE .......................... 1 ............................................................................................................................... :; ............ ~ug/L) ' 3/27/97 8.8 32 3.6 29 320 NA NA' NA · NA NA NA 10/20/98 <0.5 <0.5 <0.5 <0.5 <50 NA NA <0.5 NA NA NA 1/1'1/9~ ..... <0'.5 ..... ~ ..... <(~'i'~ .... 1-.-50' <50 NA NA , <0.5 NA NA NA 5/12/99 <0.~ ' -<~.-~ ' - <0;3 i.2-':7 <500 -"N-A- ..... ~'A- ..... -2:i'.~0 ....... 7-N~- ..... NA N,,~' ..... 8/20/99 <-0.3 <0.3 <0.3 <0.6 <500 NA' NA 1.65 NA NA 12/7/99 <0.3 <0.3 <0.3 <0.6 <500 NA NA <1.0 NA ' NA NA ... 3/30/00 <0.3 .<0.3 . <0.3 <0.3 <500 NA NA .... :'~i-~- .......... ~,,- ...... NA NA 7/3/00 ' ' <0.~ ...... ~'~ ........ '-- <-0':5 ........ ~0-.~' ~ <50' NA NA <0.5 NA NA NA MW-5 1/3/01 nd<0.50 nd<0.50 .nd<0.50 2.46 . nd<50 ......... ~N~. ....... _nd<_5 ........... n_~._<_0_:5_0 .. n~<._0_._50_-nd<0.50 , nd<0.50 3/2/01 'nd<0.50 nd~o;50, nd<01~,0- .....n~d<(~.50 ' ' nd<50 NA nd<5 nd<0.50 nd<0.50 nd<0.50 nd<0'.~-- '6/4/0i nde015 'n~0-~5 .... -nde0.5 - " nd<0.5 nd<50 ~ ....... ~'~-~ ~ "- r{~-~(~:~- ......... n~'o~-,~ nd<0.5 8/6/01 nd<0.5 nd<0.5 nd<0.5 nd<0.5 nd<50 NA nd<2.5 nd<0.5 nd<0.5 nd<0.5 nd<0.5 12/6/01 ' i2.4i' 4~1~'~) ~05 3~5' 2,510 NA nd<2.5 nd<0.5 nd<0.5 . nd<0.5 nd<0.5 2/18/02 '360' 1.1-060~_ ._ _ ~d<_0'5 ...... 7127 190 NA nd<2.5 nd<0.5 nd<0.5 nd<0.5 nd<0.5 5/22/.0_~ ._ nd<0.5 . ,d__<0.-5 ........ nde0_.5_ ..... ~20. 220 ....NA .... ...... .......5_ .... nd<0.5 nd<O.5_ 8/21/02 1.7 6.9 2.4 6.5 90 NA nd<2.5 nd<0.5 nd<0.5 nd<0.5 nd<0.5 12/5/0~---' nd'~).~--' n;d<0-~ ....... -1-.-~ ........ n'~' ~(~15 ' lO0 ..... ~,- ......... -n-alT<-2:-5- .... -n-d-< 0.5- E2C Remediation, LLC' T3-5 Project Number 1801BK04 January 21, 2003 TABLE 3 ' SUMMARY OF HISTORICAL GROUNDWATER ANALYTICAL DATA MR. FAST SERVICE STATION '" ' .600 Brundage Lane Bakersfield, California I I ~, I T ..1.....~. ....... I ........... ..X. .................. ?.~. ...... 1......?..".,,%1 ........ .?..*.. ...... 1 ....... ~.,!."...~.~ ......... ~!.?..~...'....I......~.Z..".%.I.....T..*..?.... WELLID . DATE [ ....... ¢ .................................................. · (pg/L) 3/27/97 0.98 5.90 0.92 . 5.80 60.00 NA ,NA NA 'NA NA NA 10/-20~98 <0.5 <0.5 <0.5 <0.5 <50 NA 1/11/99 <50.0 5.30 <0.5 2.80 <50 NA NA <0.5 NA NA NA 5/12/99 <0.3 1.05 0.62 4.67 <500 NA NA <2.0 NA NA NA 8/~0-/9~ ' <0.3 <0.3 <0.3 <0.6 <500 NA NA <1.0 NA NA NA 3/30/00 <0.3 <0.3 <0.3 <0.6 <500- 7/3/00 ~0.5 .... ~015 - <0'.5-" <0.5 <50' UA NA <0.5 NA NA UA 1/3/01 nd<0.50 nd<0.50 nd<0.50 nd<0.50 nd<50 NA nd<5 nd<0.50 nd<0.50 nd<0.50 nd<0.50 MW-6 .3/2)0':1' ....n'd~0~o .... nd~).~ ..... n'~0`~)'0 .... ~i-d-~'0.5~0 nd~50 6/4/01 nd<0.5 nd<0.5 nd<0.5 nd<0.5 nd<50 NA nd<2.5 nd<0.5 nd<0.5 nd<0.5 nd<0.5 8/6/01 nd<0.5 · nd<0.5 nd<0.5 nd<0.5 · 1,850 NA nd<2.5 nd<0.5 nd<0.5 nd<0.5 nd<0.5 · i2/6)(~i "6141 270 77. 255 2,150 NA nd<2.5 nd<0.5 nd<0.5 nd<0.5' nd<0.5 2/18/02 nd<0.5 5.8 nd<0.5 25 150 'NA nd<2.5 . nd<0.5 nd<0.5 nd<0.5 nd<0.5 5/22/02 0.7 nd<0.5 nd<0.5 25 180 NA nd<2.5 nd<0.5 nd<0.5 nd<0,5 nd<0.5 8/21/02 ...... i.~) ~6' ....... ~.-~- ...... 5~4- '60- 12/5/02 ' nd<0.5 nd<0.5 1.3 1.5 nd<50 NA nd<2.5 nd<0.5 nd<0.5 nd<0.5 · nd<0.5 E2C'Remediation, LLC T3-6 Project Number 1801BK04 TABLE 3 SUMMARY OF HISTORICAL GROUNDWATER ANALYTICAL DATA MR. FAST SERVICE STATION · · 600 Brundage Lane Bakersfield, California ., . (pg/L) . · 3/27/97 . .. 2,400 24,000 2,300 14,000 140,000 NA NA ' ' NA NA NA ~(1_2~99 NSFP NSFP NSFP NSFP NSFP . NA NA NSFP NA' NA NA - 8/20~99 -- N-SFP NSFP .,NSF? ....... _NSF~P_ NSFP HA NSFP · 3/30(_00' NSFP N~.FP "NSFP NSFP NSFP UA USER 7/3/00 .... . NSFP NSFP NSFP' NSFP NSFP' NA ' .................................................. NSFP 1/3/01 NSFP NSFP NSFP NSFP NSFP NA NSFP NSFP MW-7 .3/~01_ <20 9,400 4,!00 ._ 28,000 24,940 - NA <200 ~ <20 <20 <20 <20 _ 6_/_4/0_1 <50:0 5;.730 .3,590 ......... 13_230 ...... 87_,~67 ...... NA <2._5~.0_.. <50.0' <50.0 <50.0 <50.0 .._ .12J7_._/_01 ..... ndsO.5 ._ 2,31_5` 1,120 8,290 42,835 NA' nd<2.5 nd<0.5 nd<0.5 nd<0.5 nd<0.5 · .2/! .9./_02 NSFP NSFp_ · NS.FR. ._ ~SF.p_ ....... N_S..F.p_ ....... NSF_P NSF.P. .......... ~NSF_P_ 5/22/02 1.8 300 nd<0.5 3,120 31,500 NA nd<2.5 nd<0.5 nd<0.5 nd<0.5 nd<0.5 _8121102 nd<0.5 810 810 5,650 94,000 . NA nd<2:~5 .... _n_~50.5 _..~d.<0.5 nd<0.5 .nd<0.5 E2C Remediation, LLC, T$-7 Project Number 1801BK04 January.21, 2003 TABLE 3 .. SUMMARY OF HISTORICAL GROUNDWATER ANALYTICAL DATA' MR. FAST SERVICE.STATION 600 Brundage Lane': Bakersfield, California B T ' I E ! . X TPHg TPHd ' TBA MtBE DIPE ETBE TAME WELL ID DATE ......................................... : ...................................................................................... : ...................................................................................................................................... (pg/L) ' '7/_3/00 .... 820 ..... 6_4',0__0__0. 6,300 . 73,000 260,000 NA NA 550 NA NA NA . 1/3/01 34 45,000 5,000 30,800 40,910 NA <0.50 3/2/01 34 53,000 4,000 26,000 34,280 NA <2,000 <200 <200 . <~(~0- ...... i '<~0~- .... dup <200 48,000 4,100 26,000 33,610 NA <2,000 <200 <200 <200 <200 6/4/01 ...... ..nd<50-0 43,560 3,770 14,760 64,320 NA nd<250.0 nd<50.0 nd<50.0 MW-8 - 8_/6J_0_1- ...... _n. d<_50._o.. .... _4(~:..0_~_o ....... _7_, 2_80 ........ 16,800 70,350 .NA nd<250.0 nd<50.0 nd<50.0 nd<50.0 .... n~)~0, 12/6/01 nd<50.0 31,075 . 5,160 18,650 !~_7 _3_3.5_ ....... N_A_ ....... ri_d<__25?_:_0...... ~.~__ ....._nd_<50..0 nd<50~'(~ .... nd<50.0 2/18/02 ......... 0.6 1, !00 1,410 3,270 27,500 NA nd<2.5 nd<0.5 nd<0.5 nd<(~i5 nd<0.5 5i'~16!(~_ ...... nd<0._5 .. ~ _6.0_!.0. 1,._8_0_0_ ..... 4,690 74,000 NA nd<2.5 . nd<0.5 nd<0.5 nd<0.5 nd<0.5 .. 8/21/0_~ ......... nd _<_40 .... 32,760`.' . 3;9__4_0 ...... 16,870 1'~'3~6~0 ........ ~A ............... ~-d. <-2~0- ....... -~ d. <-.~-0- ....... nd<'4O' nd~45 12/6/02 ....... nd~_O.:5 ..... !9,900 .... `1,_2...7_ 0 1_4,380. 54_,_0_-0_0___ NA . ____n_d~2.5- ....__n_d<O._5- .... nd<0.5 nd<0.~ 7/3/00 <0.5 <0.5 <0.5 <0.5 <50 NA NA <0.5 NA NA NA !(3/o_1 ........ _nd<_.0_._5_0 n_d~_0_.50 nd_<_0..:.5_0., nd<0.50 nd<50 'UA nd<5 nd<0.50 nd<0.50 nd<0.50 -nd<0.50 3/2/0_1 .... nd<O:50 nd<_0.:50` _..nd<0._5._0- nd<0.50 -nd.~-~ .... -I~ ..... --~-Ci~ ........ ~-d-~o.~6- .... -nd-~'0.'50 nd<0.50 ~1-~.~50- 6/4/-01.~ .... nd <0.:5 .....nd <_0_-.5 ...... o.d .<_0:5~ ..... _nd <0.5 nd.<~5 ...... ~ ...... ~5.~ ....... ~-d-~-0'i-~ ..... ~' <015 nd'<0.5 'nd~(~-~- 8/_6_/0__1 ....... n_d___<_0.5 ...... _nd_ <0'5 ......nd.._<?.~ .... nd <0.5 .n.~_<50._ ....... _N_A_ ........ _nd_<.2_._5_ ..... ,n_d._<0._5__.._ ~_d_ _<._0.5 nd MW-9 12__/6/01 32.9 555 105 425 2,650 NA nd<2.5 nd <0.5 nd <0.5 nd <0.5 ....r~l-<-0~5-'- .~-~3-2 ........... -~:3 ........ 10, ........ -r~i-~-o.~---'" 7'~ -380- ...... ~ ........ ~i-;Ei5 ....... -n ~l- <-0 .- .~ .... ~-d.--<5.~nd <0.5 ~d-~5.-5-- ~')'i-~27~.-~ _--~-'-_2:i. 1'7-i"i "--' 8~ ............ ~:~-.........63 990- ..... NA nd<2.5-''7 n-d <0.5 - -~-d-'~)-.-~ nd <0.'5 , _ 8/2.__1_/_0_2 1.8 , . -(:9 .... 2:8 I 9.5 50 .... ~A ....... nd<2t5 _ . n.d.~0.,_5 ..... n.d.<O.5 nd<0.5 nd<0.5 12(5/02. ........ _nd_<0.5 .... nd<.O.5 ~.2 ...... 5.3 nd<_50 ........ ~_.A._ ....... '_n__.d.E2.5_. ....... n_d....<_.0:5 ........ ~_d<0.5 nd<0.5 _nd_.<..0...~- E2C Remediation, LLC T3-8 Project Number 1801RKO4 January 21, 2003 T.~BLE 3 sUMMARY OF HISTORICAL GROUNDWATER ANALYTICAL DATA ' MR. FAST SERVICE STATION 600 Brundage Lane Bakersfield,, California ' l ........... .... ........ :..I....... T ..... 'i.1.......... .......... 1 ........... ..x ........... ........ I..,,,,E I O,,E. I.ETBE1'TAME WELL ID DATE [ . (pg/L) ' ............... : ......................................... ' ........................... " 7/3/00 <0.5 <0.5 <0.5 <0.5 <50 NA NA <0.5 NA NA NA '-1/3)0i .... nd<61501 nd<0.50 nd<0.50 ........................................................... nd<0.50 nd<50 NA nd<0.50~ ...................................................... nd<0.50 nd<0.50 nd<0.50 nd<0.50 3/2/01- -nd~o.~0 nd<0.50 nd;6'.~6 ...... nd-<0.50 ....... ~a-~(J .... ~i~- ......... nd~b~'50 -' ~i~0.5-6 - n~-~6-.'5-(~ ...... n-d~0~5-0 ..... ~.-~0-- .6/4_/01 nd<0.5 nd<0.5 nd<0.5 nd<0.5 nd<50 UA nd<2.5 n-d-~l~]~' .... i---~a-Ci~o:~ .... ~C~)-.-~-- nd<0.5 ,' 8/6/0i ' r~d<0.5' nd<0.5 nd~0.5 ..... ~d-~°.5 --':~1'~ ........... ~i~, ....... ~'d7<~.5 ' ' ~1~0~5'-~--:~'~i~- ..... ~.5~ "'-l~5 MW~10 {2/6)01 4 69' 210 65 ........... ~30 ........ 1-i'~- - -N,~,' ..... ~'d-<2.5 nd~<0.~5- ..... ,-~'~1<-0~,~-- nd<0.5 nd<0.5 2/18/02 nd<0.5 14 -0.7 ..........................25.7 215 ' ........................................................ NA nd<2.5 nd<0.5 nd<0.5 nd<0.5 nd<0.5 5/16i02 1.6 99 8.8 67 470 NA nd<2.5 nd<0.5 nd<0.5 nd<0.5 nd<0.5 8/21/02 1.1 4.9 1.7 ._:.._ 4-5 50. NA nd<2.5 nd<0~5 nd<0.5 nd<0.5, nd<0.5 . 12/5/02 nd<0.5 ~ nd<0.5 1.3 2,8 160 NA nd<2.5 nd<0.5 nd<0.5 nd<0.5 nd<0.5 7/3/00 <0.5 <0.5 <0.5 <0.5 <50.0 NA NA <0.5 NA NA NA 3/2/01 NSWS NSws NSW_S .......... N_S_W~S_ ......... .N_.S~W~S_ _ [ii~NsW_-_~_~ ..... Ns_w_s. , . NSWS --N~w,~ ...... 3/2/01 Well taken out of service, silted up to 12 feet frbm bottom, replaced by MW-11 R; converted into ME well _._6_/4_/01 ..... 540 ...... 11,980 1,3_9_0_ ......... 7_,2~3__0_ ......... 57_.,_4.!_._Q .......... _<_5__0 ....n__d..~2-50.0 nd_<_50.0~ ...... _n_d.<-5~o.o:_o__ __n__d_<_~0:_0' nd<_50._.9_- 8/6/01 866 29,850 2,425 13,686 57,475 NA nd<250.0 nd<50.0 nd<50.0 nd<50.0 nd<50.0 'i2~01 '-' nd~0~5' 440 ND ......... 414'i~i- ..... ~,-77~' ..... fi~, .... '~i-~1-<'2'15 nd~l~.5' ..... -n-d<--0:5 .... ~i~1'~'i-~ .... --n-cl-~0.-~-- 2/i8i0~- .... i~0 ..... i,5-60 1,~-9~-. ...... -~i~1~,0- '-~-~,-0-~0 ........N~,- ..... n~l~215 nd<5'.'~ ...... ~d~-lJ.~--- nd--~'.~- ...... -nc~<0.5 MW-llR duplicate 140 1,320 1,063 2,490 28,000 NA nd<2.5 nd<0.5 nd<0.5 nd<0.5 nd<0.5 8/21/02 nd<40 33,280 13~ 16,530 '1'08,000 NA nd<200 ' nd<~0 .......... ~'d~40 ....... r~40 '. '"nd-~(~ .... E2C Remediation, LLC T3-9 Project Number 1801BK04 ' ' Januao/21, 2003 TABLE 3 SUMMARY OF HISTORICAL GROUNDWATER ANALYTICAL DATA. ., MR. FAST SERVICE STATION 600 Brundage Lane · Bakersfield; California ' WELL' ID,I DATE '/[ ........... ..B.....: ...... I ........... . ..T. ........... .- l. .E.. .......... ] ........... X. .......... : ..... T.P..H.g.. J....(pg/L)T.P.Hd.. [.'...T..BA..... L ..M.t.B.E ..... .DI..P...E... ........... 6/4/01 NSFP NSFP NSFP NSFP 'NSFP NSFP NSFP. NSFP NSFP NSFPr NSFP 8/6/01 '~ NS-~I~ ..... N-~'I~P ..... ~-~P "NSFP -N-~'i5'' NSFP NSFP NSFP NSFP NSFP NSFP 12/7/01 NSFp NsFP NSFP N~FP .... -N-~I5 .... N-,~'~'P ......... N-S I~- ........ MW-12 2/'19/02 NsFP N'sIEp' -N~Fp NsI~F; ..... N-S-FP- ...... i~-~'l~ ..... I~'S-F'I 5/~-3)°2 ' 'nd<~).5 ..... 910 -' 970 10,910 '' 7~i00-0' ' - NA ....... ~(:J:<-~.-5' ...... ~'~i'~ .... nd<Oi5 ~-~<-~15-' '~-d-~-O-~'-' 8/22/02 · nd<0.5 685 1,010 4 280 78,000 NA , nd<2.5 nd<0 5 nd~0.5" :1-2/5/02 nd<0.5 430 1,500 . 5,200 7,910 NA nd<2.5 nd<0.5 nd<0.5 nd<0.5 nd<0.5 6/4/01 nde50.0 . .nd~<5~0'O _ _ nd<_50.0 nd<50.0 5,580 NA nd<250.O nd<50.0 nd<50:0 nd<50.O nd<50.0 ' ~/01 NSFP NSFP NSFP ' NSF-P N-~-Fi5 .... NsF~ 12~7J01 1' 1-~ 6,550 4,690 14,815 178,900 NA nd<2.5 nd<0.5, nd<O:5 nd<0.5 nd<0.5 · '-'~/i~9/0P."" NSF"P" -NS'I~'i5- .......... ~sFP ' 'N-~i~P ..... ~i,~'P ...... MW.13 -5)23)~2- .... NSFp - -N-SF-P ....... Ns~P ' ~q~-p ........ ~-~:-p ..- -N~-~:-15--~ ..... ~S-F-P- - -~l-~-~-p--- N~Fp.' 'i-N-~-~ ...... ~-S-F~- - '.. '' 8/22/02 nd<40 .... : ............... nd<40 nd<40 nd<40 1,490 890 2,900 137,000 ' NA nd<200 nd<40 12/6/02 14 7,020 1,980 8,420 40,900 NA nd<2.5 nd<0.5 nd<0.5 nd<0.5 nd<0.5 dUplica_!..e_.' 20 ...... 7~6_60 _.~ 5,520 9,~1_1_0_ ......... .3_8,p00 ....... N_A .... n~d_<~2._5_ ....... n~d~.O._5., nd<O.5 _n._d<__O_._5_ ...... .n_d_<_O:~._. 6/4/01 871 ' 1,494 371 1.,057 9,240 <50 <25.0 <5.0 <5.0 <5.0 ' <5.0 8/6/01 160 187' 150 138 104 NA <25.0 <5.0 <5.0 <5.0 <5.0 Duplicate 15.2 ..... !.1_4 .... . 137 113 .. 82 NA <25.0 <5.0 <5.0 <5.0 <5.0- -'i2]~/0i 65 nd<0.5 75 2i.35 ...... ~,~00 N~ ' -n~<~)'.~ ..... ~1d-~'0~'5 ' nd<0.5 ..... ~d~-~.5- ~d-~-0:~ - MW-14 , ~!.8/0_2 2 8.2 37. 31 590 NA 100 nd<0.5 nd<0.5 nd<0.5 . nd<0.5 5~23~02 330 ~-3'~,0'0 1',240 ':121'320 34:,0~)'0" 'N~, ...... ~'<~i~- ........ ~'~'~0~5 - - nd<0.5 'r~d~0'.'5 ~'nd<~0.5' 8/22/02 19 13 21. 83 ....... '210:40 N/~ ........ n'~<2~5 - -r~'d-<0:5 nd<O.5' 'nd<0~5" :n~'<0.5- duplicate 18 10 19 87 2,120 NA nd<2.5 nd<0.5 nd<0.5 nd<0.5 nd<0.5' 12/5/02 3.1 18 16 .10_1... !,860 NA .~d<2.5 nd<0.5 nd<0.5 ..nd<O:5 'nd<.0'5 E2C Remediation, LLC T3-10 I project Number 1801BK04 January 2 I, 20~3 TABLE 3 SUMMARY OF HISTORICAL GROUNDWATER ANALYTICAL DATA MR. FAST SERVICE STATION ,. 600 Brundage Lane Bakersfield', California l B T' I E / X TPHg I TPHd. I TBA / MtBE DIPE ETBE I TAME WELL ID · DATE ............................................................................................................................................................................................................................................................... : ................ , [ ' .. . ' . (pg/L) 12/7/01 NSWD NSWD NSWD NSWD NSWD 'NSWD NSWD NSWD · NSWD NSWD NSWD 2/i-8)0~ "' N§WD NswD ....... -N ~-Wi~ ......... ~S-vv~3 ........ ~i~;~-D-.-.---~W'[~ NSWD ...... .-- N-S~vv-D ...... ~1-S~5 ......-N-~-W~:~ ....... N--S.~D--.- MW-15D ... 5/22/02 NSWD NSWD NSWD NSWD NSWD .NSWD NSWD NSWD NSWD NSWD NSWD 8/22/02 NSWD NSWD.' ~ _N_.S_W._D ....... _N._..s_W__D ...... _N_S_VV.D .... ~_N_s_.W_D NSWD NSWD NSWD NSWD NSWD 12/5/02 NSWD. NSWD NSWD NSWD NSWD NSWD NSWD 'NSWD NSWD NSWD NSWD !2/7/01 nd<0.5 nd<0.5 _n.d<_O._5 ........ _n__d_<_0._5 ~._ I ........ 8-5- .......... _NA_ _. nd<2.5 ND ND ND nd<0.5 " '~ ~'~'~ NSWD' NSW5 NSWD NSWD NSWD NSWD NswD ...... 5/22/02 25 4,670 nd<0.5 3,700 10,000 NA nd<2'.~5 -- nd<0.5 nd<0.5 nd<0.5 nd<0.5 MW-15S 8/22/02 nd<°.5 nd<0.'5 ' n-d<0:5--- :'--'~5:~ ....... -nd'~-5-~'~: ....... N/~ nd<2.5 ........ r~l-~5.~ ....... nde0:5 '' ~d'~ ...... -n~'~)~- 12/5102 nd<0.5 nd<0.5 22 21.1 nd<50 NA nd<2.5 nd<0.5 n'd <-0.'~ nd<0.5 nd<0.5 12/7/01 NSWD NSWD NSWD · NSWD NSWD NSWD NSWD NSWD NSWD NSWD NSWD . 2/18~02 NSWD NSWD NSWD NSWD NSWD NSWD NSWD ...... ~-~V~ ..... 5/~2/-0'2' ...... N~WD NSWD ' --N~D ....... NS-V~D-'~: ..... ~§~/~E) ....... -~;-V~/D NS~/D ..... N~s--W-I~ ....... NS~VD --NS-WD ....... -N-~v~'I~'- MW-16 ........................ 8/22/02 NSWD N'~V-i3' ' -fl-~V-5~ ....... 1~5 .......... -I~S~E~ ........ fi~Wg .' NSWD ....... 12/5/02 NSWD NSWD NSWD NSWD NSWD NSWD NSWD NSWD NSWD NSWD NSWD 12/7/01 NSWD NSWD NSWD NSWD NSWD NSWD NSWD ............ N__s_w.D .... -2)~8/-0~; ........ NSWD NS-W5 ....... N-S~5 .... N-s~vv~D .......... ~/~5'- - -I~SWD NSwD NSWD NSWD NSWD NSWD MW-17D 5)~/~ NSWD N'~WD NS~ND· Nsv~/g '--'NSWI~ ...... NSwD NSWD '-'I~'S-W5' -N~WD- Nsw-D'- ~is~VD 8/22/02 NSWD NSWD .... NSW-[~ ...... Nsw~) ...... NSV~5 .... N-S~/D NSWD NSWD NSWD NSWD NSWD ' '~'2J5/(~2 N'SWD Ns-WD .... -~-SwI~- .... '~§w5 ..... ~I~W~) ....... NS~/D NSWD E2C Remediation, LLC T3-11 Project Number 1801BK04 January 21, 2003 TABLE 3 SUMMARY OF HISTORICAL GROUNDWATER ANALYTICAL DATA MR. FAST.SERVICE STATION 600 Brundage Lane Bakersfield, California I l B T ~1 E / X I-TPHg I mPHd' I TBA I MtaE I' D~PE. I ET~E I TAME 12/7/01 nd<0.5 nd<0.5 nd<0.5 nd<0.5 135 NA nd<2.5 nd<0.5 nd<0.5 nd<0.5 nd<0.5 2/18/02 nd<0.5 nd<0.5 nd<0.5 nd<0.5 nd<50 NA nd<2.5 nd<0.5 nd<0.5 nd<0.5 nd<0.5 MW-17S 8!2_~2 n.d<_0:5 . nd<0.5 nd~...5_._ nd<0.5 nd<SO NA nd<'2.5 nd<0.5 nd<0.5 nd<0.5 ,i nd<0.5 8/22/02 36 nd<0.5 4.0 4.5 nd<50 NA nd<2.5 nd<0.5 nd<0.5 nd<0.5 nd<0:5 Notes: r. Sampling performed by E2C starting 01/03/01 MTBE analysis by EPA Method 5030)8020 from10/20/98 to 1/3/01 NSWD = Not Sampled this Quarter; well dry MTBE analysis by EPA Method 8260b from 1/3/01 . NSFP = Not sampled this quarter due to presence of free-product Results in micrograms per liter (pg/L) = parts per billion (ppb) NSWS = Not sampled, well dry, casing silted up 12 feet from bottom B = Benzene T = Toluene DIPE = Diisopropyl Ether TAME = Tertiary Amyl Methyl Ether E = Ethylbenzene TBA = Tertiary Butyl Alcohol (a.k.a. tert-butanol) ETBE = Ethyl Tertiary Butyl Ether TPHd = Total Petroleum Hydrocarbons as Diesel MtBE = Methyl tertiary-Butyl Ether TPHg = Total Petroleum Hydrocarbons as Gasoline NA = Not' analyzed for this compound X = Total xylenes ND = Below Practical Quantitation Limits: BTEX-O.5 pg/L, TPHg-50/]g/L, and MtBE/DIPE/ETBE/TAME-0.5/]g/L; TBA-2.5/]g/L. E2C Remediation, LLC Project Number 1801BK04 January 24, 2003 DETAILED COST ESTIMATE - OFF-SITE VF_./GASS O&M & GROUNDWATER MONITORING AND STATUS REPORTING Mr. Fast Service Station ' 600 Brundage Lane -- Bakersfield, California TASK/SUBTASK POSITION/PERSONNEL DESCRIPTION QTY UNITS RATE AMOUNT DATE TASK 1 - Regulatory Liaison & Encroachment/Access, Permitting & Project Management (4 years) TASK I - E2C Remediation, LLC represents the client at·meetings and telephone conversations with various regulatory agencies to establish a mutual understanding of methods and criteria necessary for completion of project objectives, including preparation and submittal of any permit applications. Senior Geologist coordinates and oversees all activities relating to the Scope of Work, and the Principal Hydrogeologist oversees drilling location selection and coordinates field activities with regulatory agencies.. Subtask la - Regulatory Liaison/Project Management DATE ,-. "" .' - "?POSITION/PERSONNEL ........... ~.. .............. Professional Services Principal Registered Geologist-P. Goalwin Contact with agencies~ coordinating permit documentation, and oversight of corrective action implementation with regulatory agencies.' oversee all ~48.0 hr 105.00. 5,040.00 office and field activities avg. one hr/month for 4 years Senior Registered Geologist-B. Lawson Oversight of logistics associated with corrective action implementation with the regulatory agency and off-site owners; Oversee operations, and 96;0 hr 90.00 8.640.00 sample selection and collection. Review field data for average 2 . hr/month for 4 years ' Subtaskla Subtotal 13,680.00 Subtask lb - Annual SJVAPCD Permit Renewal (2 renewals) · ~:" .::,"~ ' ' ,' .' ' .' DESCRIPTION:~'f-?-~;?',~':; ' ~:. :.;;~i:',":;:'~ i:~QTY 2-UNITS',i ,'.:~RATE:~ ~i~AMOUNT,~'!! Professional Services Principal Registered Geologist-P. Goalwin Review and certify permit renewal application 2.0 hr 105.00 210.00 Staff Engineer-J. Scott Prepare permit renewal application ' 8.0 hr 70.00 560.00 Administrative-D. Carrasco Report production, copying, etc. 2.0 hr ' 35.00 70.00 Professional Subtotal 840.00 SJVAPCD' Fees Renewal Fees 1.0 fee 100.00 100.00 Subtotal 100.00 E~C Markup @ 15% 0.15 100.00 15.00 SJVAPCD Subtotal 1 i5.00 One permit renewal/year for 2 years 2.00 app 955.00 1,910:00 ' Subtask lb Subtotal 1,910.00 TASK I T0_tal 15,590.00 E2C Remediafion, LLC Cost Estimate-1 Project Number 1801BK04 January 24, 2003 DETAILED COST ESTIMATE - OFF-SITE VF_JGASS O&M & GROUNDWATER MONITORING AND STATUS REPORTING Mr. Fast Service Station · 600 Brundage Lane. Bakersfield, California TASK/SUBTASK POSITION/PERSONNEL DESCRIPTION QTY UNITS RATE AMOUNT DATE TASK 2 - Off-Site VE/GASS Installation, SJVAPCD Startup Inspection Test & SJVAPCD Startup Test Report ITASK'2 - E2C professional staff install off-site VE/GASS system and power. Conduct SJVAPCD Startup Inspection Test. Data compiled and evaluated and presented in Startup Report I Ito SJVAPCD. . ' , · I Subtask 2a - Install VE/GASS Equipment (Solleco TCAT-300 Cat-Ox & air compressor and Power Supply) .Professional Services Staff Engineer-J. Scott Mob in and install equipment "8.0 hr 70.00 560.00 Senior Technician-G. Halcon ' AssiSt in equipment mobilization and installation 8.0 hr 55.00 440.00 · ' Vehicle . 1.0 day 60.00 60.00 Travel Time Approx~ I hr/round trip, 1 trip 1.0 hr 50.00 ' 50.00 Professional Subto{al 1,110.00 Subtask 2a Subtotal 1,110.00 Subtask 2b'- VE/GASS Startup and Annual Inspection Tests. Professional Services ' . Principal Geologist-P. Goalwin Direct field supervision of test 4.0 105.00. 420.00 Field EquipNehicle . 1.0 60.00 60.00 Travel Time 1/2 hr/round trip, 5 trips 0.5 50.00 25.00 E2C Equipment FID · 1.0 50.00. 50.00 Professional Subtotal 555.00 Subcontractor AnalYtical Services Columbia Analytical Laboratories Tedlar Bag samples - 1 Set (set = effluent + influent) TPH + BTEX using EPA Method TO3 and CARB 14 2 125.00 250.00 Tedlar Bags 2 12.00 .24.00 · Subtotal 274.00 E~C Markup @ 15% 0.;15 274.00 .41.10 Analytical Subtotal 315.10 One startup and 2 annual tests 3.00 test '870.10 2,610.30 Subtask 2b Subtotal 2,610.30 · E2C Remediation, LLC ' Cost Estimate-2 Project Number 1801BK04 · · ' January 24, 2003 DETAILED COST ESTIMATE - OFF-SITE VF_./GASS O&M & GROUNDWATER MONITORING AND STATUS' REPORTING ' Mr. Fast Service Station 600 Brundage Lane Bakersfield, California· TASK/SUBTASK ' POSITION/PERSONNEL DESCRIPTION QTY UNITS RATE AMOUNT DATE Subtask 2c ~ SJVAPCD Startup Inspection Test Report · ..... ; DATE', .....~ :;' .'.~': i:;POSITION/PERSONNEI~'~';~!?:~:!:~~ ' ............. ~ ...... ' ...... ~"~' ....... ~' ....... : ......... ' ~:~'RATE~ ~.A_.MOUNT..~,~ P~ofessional Services (annual reports under Task 5) PrinCipal Registered Geologist-P. Goalwin Review and certify report 2.0 hr 105.00 210.00 Senior Registered Geologist-B. Lawson Supervise report preparation and review ~eport 8.0 hr 90.00. 720.00 Staff Engineer-J. Scott Drafting, Data Compilation, etc. 2.0 hr 70.00 140.00 Administrative-D. Carrasco Report production, copying, etc. . ~. 2.0 hr 35.00 70.00 ~, Subtask 2c Subtotal 1,140.00 ' TASK 2 Total 4..860.30 TASK 3 - Operation and Maintenance of VE/GASS and Utilities (3 years with subsequent 1 year of monitoring) Task 3: Task includes the operation and maintenance of remedial system; includes all materials and supplies to accomplish all field screening, systems checks, periodic lubrication,I inspections and adjustments. . Subtask 3a - Professional Services (36 months) ~ :'~', ?DATE:.~?;~..'~ ?*~,:~'.:i.~-;~iPOSITION/PERSONNEL ~,: ,~:i!~ .... '"~" ~"-" ~ ~ '~" ~ 'DESCRIPTION'~"*;~:~'~'~"~"" ~ ........ ~"~"-' ~ ~!i~i~;! U'NITS ~'~. ~.~:~RATE~:~ ~! MOUNT~':~ Professional Services Staff Engineer-J. Scott Check running condition; check valves and motor belt; drain air tank; check recorders; take readings;'download data onto disk; replace disk;'. 6 hr 70.00 420.00 collect DO levels; clean site, and general maintenance. Equipment FID 0.5 day 100.00 50.00 Travel Approx. 1/2 hr/round trip, 1 trip 0.5 hr 50.00' 25.00 Vehicle 1 day 75.00 75.00 '· Professional Subtotal 570.00 4 events per month for 3 years 144.0 events ' 570;00' 82,080.00 Subtask 3a Subtotal . 82,080.00 Subtask 3b - Equipment Purchase · DATE .... ' , POSITION/PERSONNEL ~ ~.~::...,:,,,~?.-. ,,· ......, ,:.. ...: DES.CRiPTiON~;;.~;.~W~:, Equ pment Purchase Solleco TCAT 300 CFM Vapor Extraction Unit 1 unit 52,000.00 52,000.00 Ingersoll Rand 10-hp compressor 1 unit 7,800.00 7;800.00 Generator 1 unit 28,800.00 28,800.00 ', .' Subtask 3b Subtotal 88,600.00 E2C Remediation LLC Cost Estimate~3 Project Number 180lB'K04 ., 'January 24, 2003 ' DETAILED COST ESTIMATE - OFF-SITE VE/GASS O&M & GROUNDWATER MONITORING AND STATUS REPORTING ., . Mr. Fast Service Station 600 Brundage Lane : Bakersfield, California TASK/SUBTASK POSITION/PERSONNEL ' DESCRIPTION QTY UNITS RATE AMOUNT. DATE : Subtask 3c - Utilities (3 years) . . ' ~. ~:.., ,., ~. ~, ;,-.-~.~. ..... ' .... ,,~ .:~..~ ~,.~,.,~,~ ........ :~ .~;~,,,~ ..... ' .... Q'T~,~...~;UNITS!/! /~i?RATE~,?~ ~iAMOUNT~! - ., DATE?*; ~:;"~ '!: ~;:~;"-"-'. POSITION/PERSONNE~'.::~! .'!"': ~': : /" -. : :,, ..... ,,,' . ~.-,:' .-.DESCRIPTION,:~..,,.:,:-~ .-. Subcontractor Utilities - 36 Months Power Supply Fuel (Diesel) 36 mo 1,200.00 43,200.00 : Supplemental Fuel - Propane 36' mo 900.00 32.400.00 Subtask 3c Subtotal 75,600.00 Subtask 3d - Chemical Analyses of Influent and ~Effluent Samples , .DATE''-~'' 'POSITION/PERSONNEL, ".~ ..... ' :'~"~:." "::~!?.."?':i~';i. .,:-DESCRIPTION,,,:,;,.:!, ~r'~:~,'*: ' ~ ...... : ~'~:~'~':"''*: ::'QTY' ~UNITS'~ f*~'~;'RATE(£~{~ ~AMOUNT;'~' Subcontractor Analytical Services . ,j Columbia Analytical Laboratories Tedlar B~g · 12 - bag ' 1~.00 144.00 Air. Samples (TPHg/BTEX) (one influent sample per quarter for 3 years) ~ 2 test .. '125.00 · 1;500.00 . . .~ Subtotal 1,644.00 · E~C MarkuP @ 15% 0.15 1,644.00 246.60 Subtask 3d Subtotal 1,890.60 TASK 3 Total 248.170.60 TASK 4 - Quarterly Gr,oundwater Monitoring & Sampling (12 wells, 16 events). Task 4 - Conduct Quarterly Monitoring for 4 years, lincludes professional services, analytical services and field sampling equipment. Includes monitoring and sampling up to 12 wells up to 92 feet in depth and 1 well up to 135 feet in depth. In addition; one (1) duplicate and one (1) travel blank will be analyzed for a total of fourteen (14) samples. This samPling regimen is lin accordance With the RWQCB directives. The samples labeled and chain of custody ~documentationis maintained. Purge Water will.be disposed of after each monitoring event. I I Subtask 4a - Quarterly Groundwater Monitoring (12 wells, 1 duplicate and 1 travel blank) ' -DESCRIPTION -,~??,~,. ~ ..,.,~.,,.... ~.~ ~QTY ~?.UNITS': -..~RATE?~ !~AMOUNT;;; . DATE ' 'POSITION/PERSONNEl:: :~.}~,~!.'!i.."~.:"! · ~;',:~',~'*'."."~:??. *' ~*~',~"~:=~'*.'~ ..... ~:~.:'-'~':~'*~' ...... Professional Services Senior Technician-G. Halcon . Monitor groundwater - check for free-product, gauge water levels, purge wells, collect water samples, maintain documentation (1 long Day) 12.0 · hr 55.00 : 660.00 Technician-R. Velez Assist in groundwater monitoring 12.0 hr 50.00 600.00 Travel Approx. 1 hr/round trip, 1 trip 1.0 hr 50.00 50.00 · Vehicle 1.0 ' day 75.00 75.00 E2C Equipment Oil/Water Interface Probe 1.0 day 35.00 35.00 Misc. equipment (pumps, generator, compressor, bailers, etc.) 1.0 day · 100.00 100.00 Professional Subtotal 1,520.00 4 events per year for 4 years 16.0 events 1,520.00 24,320.00 Subtask 4a Subtota! 24,320.00 E2C Remediation, LLC Cost Estimate-4 " Projecf Number 1801BK04 · January24, 2003 DETAILED COST ESTIMATE - OFF-SITE VE/GASS O&M & GROUNDWATER MONITORING AND STATUS REPORTING Mr. Fast Service Station 600 Brundage Lane Bakersfield, California TASK/SUBTASK POSITION/PERSONNEL DESCRIPTION QTY UNITS RATE AMOUNT DATE Subtask 4b - Monitoring Wells - Analytical Services (12 wells, 1 duplicate and 1 travel blank). Subcontractor Analytical Services Halcyon Analytical Laboratories TPHg using EPA Method 8015M 14 test 55.00 770.00 BTEX/Oxygenates using EPA Method 8260b 14 test 120.00 1,680.00 ' 'Subtota! 2,450.00 Prepare data in EDF format and submit via intemet 0.10 2;450.00 245.00 Subtotal 2,695.00 .. E2C Mark-Up of 15% 0.15 2,695.00 404.25 Analytical Subtotal 3,099.25 4 events per year for 4'years 16.0 events· 3,099.25 49;588.00 Subtask 4b Subtotal 49,588.00 SubtaSk 4c - Purge Water Disposal (once per quarter for 4 years) Vacuum Truck Services E2C Remediation, LLC Transport Services (mobilization, collect purge water, transport to 8.0 hr 70.00 560.00 disposal facility) · Vacuum Truck Subtotal ' 560.00 Subcontractor DiSposal Facility Services (includes surcharges) Demenno Kerdoon Approx. 200 gallons @ 0.58/gal 200 gal 0.58 116.00 Subtotal 116.00 E~C Markup @ 15% 0.15 116.00 17.40 Disposal Facility Subtotal 133.40 Once pe~ quarter for 4 years 16.0 events 693.40 11,094.40 Subtask '4e Subtotal 11,094.40 TASK 4 Total 85,Q02.~4D E2C Remediation, LLC · Cost Estimate-5 Project Number 1801BK04 January 24, 2003 DETAILED COST ESTIMATE - OFF-SITE VF_.JGASS o&M & GROUNDWATER MoNIToRING AND STATUS REPORTING ' ' Mr. Fast Service Station 600 Brundage Lane Bakersfield, California TASKJSUBTASK POSITION/PERSONNEL DESCRIPTION QTY UNITS · RATE 'AMOUNT DATE · . TASK 5 - Status Reporting for 4 years TASK .~ - In accordar~ce with RWQCB and SJVAPCD directives, prepare Status Reports and Groundwater Monitoring Reports for the RWQCB', SJVAPCD and the Client. Status Reports Present details regarding all activities at the S te for each month Each groundwater mon tor ng report includes reporting of fie d procedures, report ng of aha yt ca resu ts and linterpretation, operations, drafting of site maps, historical tables and conclusions. Report documents sampling and anal'ysis of twenty (20) monitoring wells.. . · Subtask 5a - SJVAPCD Reporting Quarterly Remediation Status Reports - Included with Quarterly GWM Reports (see Subtask 5c below) Subtask 5b - SJVAPCD'Annual Inspection and Test Report (2 reports) )rofessional Services Principal Registered Geologist-P. Goalwin Review and certify report 2.0 hr 105.00 ' 210.00 .. Senior Registered Geologist-B. Lawson Supervise report preparation and review report 8.0 hr '- 90.00 720.00 . Staff Engineer-J. Scott Drafting, Data Compilation, etc. 2.0 -hr 70.00 140.00 Administrative-D. Carrasco Report production, copying, etc. 2.0 hr 35.00 70.00 Subtotal 1,140.00 One report per year for 2 years 2.0 rpt 1,140.00 2,280.00 · Subtask 5b Subtotal 2,280.00 Subtask 5c - Quarterly Groundwater Monitoring RePorts and Remedial Status Reports (12 wells, 16 Reports) Professional ~rvices Principal Registered Geologist-P. Goalwin Review and certify report 2.0 hr 105.00. 210.00 Senior Registered Geologist-B. Lawson Supervise report preparation and review report 16.0 hr 80.00 1,280.00 Staff Engineer-J. Scott' Report prep., Drafting, Data Compilation, etc. 2.0 hr 70.00 140.00 Administrative-D. Carrasco Report production, copying, etc. 2.0 hr 35.00 70.00 Subtotal 1,700.00' 4 reports per year for 4 years 16.0 rpt 1,700.00 27,200.00 Subtask 5c Subtotal 27,200.00 · TASK 5 Total 29,_480,00 TOTAL 383,103~30 E2C Remediation, LLC Cost Estimate-6 ! I I I I I I I I I I I I I E2C REMEDIATION, LLC ENVIRONMENTAL/ ENGINEERING CONSULTANTS I m m FIRST QUARTER 2002 t m GROUNDWATER MONITORING REPORT MR. FAST SERVICE STATION 600 Brundage Lane Bakersfield, California m April 9, 2002 m Prepared For: Mr. & Mrs. Ki Chu Yi 600 Brundage Lane Bakersfield, California I I -- Prepared By: E2C Remediation, LLC m 5300 Woodiere Drive, Suite 105 Bakersfield, California 93313 Project Number 1801BK03 I ~' m m 1::~':' '~"~:'~' '""~: ~':~:~?"~' :(¥ ~ .E , April ~, 2002 Mr. & Mrs. Ki Ghu Yi Mr. Fast Semice Station 600 Brundage Lane Bakersfield, CA 93304 Subject: First Quader 2002 Groundwater Monitoring Repo~ ~ Mr. Fast Service Station 600 Brundage Lane Bakersfield, California Dear Mr' & Mrs' Yi: E~C Re~ediation, LLC (E~O) has completed First Quader 2002 Groundwater Monitoring at the properly identified as the Mr. Fast Se~ice Station at 600 Brundage Lane (Site), Bakersfield, California. Four of the wells installed along Fig Street in November 2001 were found to be d~ and could not be sampled. This repo~ documents the work pedormed and the results. It is a pleasure to be of se~ice to you, should you have any questions regarding this submittal, do not hesitate to call either of the undersigned at 661-831-6906. Mark W. Clardy, ~JG~ffT~ 7t55 J'] ~hili~~ Reg. Expires 05/3~ ~/ ~ ~rincipal Hydr~oolo~ist CC: ~ohn Whiting, ~.G. Mr. Howard Winos, ~.G Associate Engineering Geologist Hazardous Materials Division · California Regional Water Quality Control Board City of Bakersfield Fire Depa~ment Central Valley Region 1715 Chester Avenue 3614 Ashlan Avenue Bakersfield, CA 93304 Fresno, CA 93726 ~IRO~T~L I ~Gl~fi~Rl~G ~O~$~[T~T$ , S i n c e 1 ~ 7 0 . 5300 Woodmere Drive, Suite 105, B~ersfield, ~ 93313 Tei:'661.831.6906.. F~x:'661.831.6234' Toll F~e: 800.339.4952 .... '"":"' Corporate O~ce:382.~artin Avenue, Santa Clara, ~ 95050 Tel.: 408.3~7.5700 'F~x: 408.327.5707 Email: E2C.Remediati~mLLC~sbcglob~.n~ I Pro_iect Number 1801BK03 "::. A~)ril 9. 200?" TABLE OF CONTENTS TABLE OF CONTENTS ................... ' i LIST OF FIGURES ........................................................................................... ~ ........ .... ............... iv LIST OF TABLES .......................................................................... iv LIST OF APPENDICES .............................................................................................................. iv EXECUTIVE SUMMARY .... ' ...... ,..i ............................................................................................... 1 First Quarter 2002 Groundwater Monitoring ........ ..................................................................... 1 ConclUsions ......................................................................................................................... 1 Recommendations ................................... , ......................... .................................................. 2 1.0 INTRODUCTION ...................................................................................... i ............... ........ 3 1.1 Site Description: ................................................................... , ........................................ 3 1.2 Regional and Site Geology and Hydrogeology .................. · .................................... : ........ 3 1.2.1 Regional Geology ........... : .............. ~ ................................ , ................................... 3 1.2.2 Regional Hydrogeology ' 4 1.2.3 Site Specific Subsurface Stratigraphy and Hydrogeology.. ........... · ........................ 4 2.0 SITE HISTORY ................................................................................................................. 5 2.1 Initial Site Assessment .................................................................................................. 5 2.2 Preliminary Site Assessment - Limited Soil Sampling - February 1992 .......................... 5 Tightness Testing - June 1993 ............................................................................. 6 2.3 Tank 2.4 Site Assessment - July 1993 ......................................................................................... 6 2.5 UST Permitting - December 1993 to July 1994 ..' ................................................ ............ 7 2.6 Additional Soil and Groundwater Characterization -July 1995 ....................................... 7 2.6.1 Drilling Operations .................................................................................... ; ......... 7 Well MW-1 Construction Details .......................................................................... 7 2.6.2 2.6.3 Soil Analytical Results ........................................................................................ 7 2.6.4 Groundwater Analytical Results .......................................................................... '8 2.7 · Removal of Old USTs and InStallation of New UST ........................................................ 8 2.8 Groundwater Assessment Workplan - February 1996 .............. : ............. : ...................... 8 2.9 Site Assessment Work - April 1996 ..~ ............................................................................ 9 2.9.1 Well Installations ....................................................................................... . .......... 9 2.9.2 Soil Sample Analytical Results ............................................................................ 9 2.9.3 Groundwater Analytical Results .......................................................................... 9 2.9.4 RWQCB Review of AEC 1996b Report .... , ........................................................ 10 2.9.5 Groundwater Assessment Workplan - October 1996 ........................................ 10 2.9.6 RWQCB Review of the AEC October 1996 (11/6/967) Workplan ....................... 10 2.10 Additional Groundwater Plume Assessment - March 1997 ....................................... 10. 2.10.1 Well Installations ............................................................................................... 10 2.10.2 Groundwater Elevations .................................................................................... 11 E~C Remediation, LLC i " Project Number 1801BK03 ADril 9. 2002 2.10.3 Soil Sample Analytical Results ............................................................ .............. 11 2.10.4 Groundwater Analytical Results ........................................................................ 11 2.10.5 Report - April ............................................................... Site Assessment 997 1 ' 2.i0.6 ,. RWQCB Review of AEC April 1997 Report .......... ' ................................... ........ ..'12 2.11 AEC Workplans - May 1998 12 2.12 Quarterly GroundWater Monitoring and Sampling ..................................................... 12 2.12.1 RWQCB Review of Second Quarter 1999 Groundwater Monitoring Report ........ 13 2.13 Free-Product Removal .......... ............................................... .......................... ......... 13 2.14 Soil Remedial System Installation and Operation - April to August 1999 ................. 14 2.t 5 RWQCB Review of 10/99 QMR & Additional GW Assessment Workplan ............... ... 14 2.16 Revised Additional Groundwater Assessment Workplan - February 2000 ................ 15 2.17 RWQCB Review of Revised Additional GW Assessment Workplan ..........................15 2.18. Additional Site Assessment Work - April 2000 ................................. ~ .................. .... 15 2.19 Groundwater Monitoring Well Installations -jUne 2000 ............................................ 15 2.19.1 Boring MW-8 Analytical Results for Soil Samples .............................................. 15 2.19.2 · Boring MW-11 Analytical Results for Soil Samples ............................................ 16 2.19.3 Third Quarter 2000 Groundwater Monitoring and Sampling ............................... 16 2.20 July 2000 Groundwater Elevations ................................................ ........................... 16 2.21 RWQCB Response- 11/17/00 ................................................................................ 16 2.22 RWQCB Response - 11/29/00 .......................................... ~ ..................................... 17 2.23 Additional Assessment Work - January 2001 ........................................................... 17 2,23.1 Surrounding Area Water Well Survey ................................................................ 17 .2.23.2 Well (CWS) .................................................................. .................... 17 ID~35-'02 2.23.3 Well ID# 36-02 (CWS) ...................................................................................... 17 2.23.4 Well ID# 159-01 (CWS) .................................................................................... 18 2.23.5 Well 30/28-6 (SDWR) ....................................................................................... 18 2.23.6 Existing Well I:nspection .................................................................................... 18 2.23.7 Survey Wells 18, 2.24 Fourth Quarter Groundwater Monitoring and Remedial Action Plan .......................... 18 2.24.1 RWQCB Remedial Action Plan Response - February 26, 2001 ........................ 19 2.25 FirSt Quarter 2001 Groundwater Monitoring ............................................................. 19 2.25.1 Groundwater Elevations ................................................................... ~ ................ 19 2.25.2 Groundwater Analytical Results ......... ~ .............................................................. 19 2.25.3 Conclusions ...................................................................................................... 20 2.25.4 Recommendations ..... : .................................................................................. ;... 20 2.26 Regulatory Compliance ............................................................................................ 21 2.27 Request to Start Off-Site Remediation ...................................................................... 21 2.27.1 RWQCB Approval of Additional Well Installations .............................................. 22 E~C Remediation, LLC ii Proiect Number 1801BK03 April 9. 2002 2.28 Report of Findings for Well Installations ' ' 22 2.28.1 Soil Analytical Results · 22 2.28.2 Shallow Groundwater Monitoring Well Installations ........................................... 22 2.2813 Deep Groundwater Monitoring Well MW-14 ............................ ; ..................... .... 22 ' ' 2.28.4 Installation .of AS Wells ........................................... ' ................................. i ........ 23 2.28.5 Installation of Well VE-3 .................................................................................... 23 2.29 Report of Findings for SVE/AS Pilot Test'. ................................................................ 23 2.29.1 Air Sparge ................................................................................ ObservationS.,,. 23 2.29.2 Air Sparge Test Conclusions ............................................................................. 24 2.29.3 SVE Observations .................................... ........................................................ 24 2.30 Second Quarter 2001 Groundwater Monitoring ........... ' ............................................. 25 2.30.1 Groundwater Analytical Results ...: .................................................................... 25 2.30.2 Conclusions., ............................... i ..................................................................... 26 2.30.3 Recommendations.. ............................ ............................................................... 26 2.31 Revised Remedial Action Plan ................................................................................. 27 2.32 Third Quarter 2001 Groundwater Monitoring ......... i .................................................. 27 2.32.1 GrOundwater Analytical Results ........................................................................ 27 2.32.2 Conclusions ...................................................................................................... 28 2.32.3 Recommendations ........................................................................................... : 28 2.33 Report of Findings - Additional Groundwater Characterization ................................. 29 2.33.1 Soil Analytical Results ....................................................................... ............... 29 2.33.2 Well Installations.. ' ......... 29 2.33.3 Subsurface Stratigraphy and Hydrogeology ....... · .............. : ............................... ~ 30 · 2'.33.4 Conclusions ................ . ...................................................................................... 31 2.33.5 Recommendations.. ' ' . .................................. 31 2.34 Fourth Quarter 2001 Groundwater Monitoring .......................................................... 31 2.34.1 Groundwater ~,nalytical Results · 32 2.34.2 Conclusions ......................... 32 2.34.3 Recommendations .................................. .......................................................... 33 2.35 RWQCB Response- 1/24/02 ............................................................. ~ .................... 33 3.0 FIRST QUARTER 2002 GROUNDWATER MONITORING .............................................. 33 3.1 Groundwater Elevations ............................................................................................ '.. 34 3.2 Monitoring Well Purging and Sampling ........................................................................ 34 3.3 Groundwater Analytical Results ................................................................................... 34 3.4 Conclusions ' 35 3.5 Recommendations ...................................................................................................... 36 4.0 LIMITATIONS AND REPORT CERTIFICATION ............................................... i .............. 37 5.0 REFERENCES ............................................................................................................... 38 E~C Remediation, LLC iii · ~ "~ Proiect Number 1801BK03 ' LiSm OF FIGURES Figure 1 Site Location Map i Figure 2. Site Plan Figure 3 First Quarter 2002 GroUndwater Gradient Plot i Figure 4 First Quarter 2002 Benzene Isoconcentration Plot Figure 5 First Quarter 2002 TPHg Isoconcentration Plot I LIST OF TABLES Table 1 First Quarter 2002 Groundwater Monitoring Data I Table 2 Historical Groundwater Elevation Data Table 3 Historical Groundwater Analytical Results i LIST OF APPENDICES Appendix A First Quarter 2002 Groundwater Purge Data Sheets ApPendix B First Quarter 2002 Groundwater Analytical Laboratory Report I Appendix C Survey Plot of Well Locations ! ! I E2C Remediation, LLC iv proiect Number 1801BK03 Aoril 9. 2002 This report contains the results of the First Quarter 2002 groundwater monitOring event for the Mr. Fast Service Station at 600 Brundage Lane (Site), Bakersfield, California. This 'report is presented to comply with the directive of the California Regional Water Quality Control Board- Central Valley Region (RWQCB) dated September 21, 2001. This report presents the results of the work activities and includes analytical data, groundwater elevation data, and interpretations of current groundwater quality and flow direction beneath the Site and the immediate vicinity. On january 24, 2002, the RWQCB issued a letter in review of the additional gi:oundwater characterization performed in November and December 2001 The letter requested installation of an additional downgradient monitoring well with downhole geophysical logging to identify. deeper water-bearing zOnes below perched groundwater. E2C prepared a cost pre-approval for the State UST Fund that includes preparation of a Workplan to install the additional monitoring Well. The Workplan will be prepared upon pre-approval of costs by the UST Fund. First Quarter 2002 Groundwater Monitoring Conclusions BaSed on the data presented in this report, E2C makes the following conclusions: · Groundwater elevations onsite and along Brundage Lane decreased approximately 3 feet relative to the Fourth Quarter 2001 and decreased 4 to 10 feet at offsite wells south of wells MW-11R and MW-12, except at deep well MW- 14 where the decrease was 0.8 foot; · The groundwater gradient from the Site to Fig Street was calculated at 0.041 ft/ft with flow in a southeasterly direction; in .the Fourth Quarter 2001, the groundwater gradient was 0.036 ft/ft, with flow also to the southeast; Wells MW-15S, MW-15D, MW-16, and MW-17D were found to be dry, · suggesting that groundwater flow along Fig Street is laterally discontinuous; · The free product thickness at well MW-12 increased from 0.13 foot in the Fourth Quarter 2001 to 0.82 foot in the First 2002, an of Quarter increase 0.69 foot. Free product was also found in wells MW-.1, MW-7,.and MW-13 in the First Quarter 2002, though was not found in these wells in the Fourth Quarter 2001; · Significant concentrations of TPHg and BTEX compounds were reported i'n groundwater samples from wells MW-l, MW-4 through MW-10, MW-11R, MW- 13, and MW-14; · The total of hydrocarbon concentrations in groundwater at wells MW-8 and MW- 11R suggeststhat free-product may be present in those areas; · Total hydrocarbons as gasoline were reportedly non-detect in the groundwater sample' from downgradient monitoring well MW-17S, though was reported at a concentration of 135.1zg/L in the Fourth Quarter 2001; and · The groundwater contaminant plume at the Site i.s long and'narrow, which indicates that it is primarily controlled by the steep groundwater gradient, however, slightly increasing BTEX and TPHg concentrations in the sample from upgradient well MW-2, and increasing Benzene and TPHg at MW-4, MW-5, and MW-9, indicate some lateral dispersion may also be Occurring. E2C Remediation, LLC 1 ' · Prelect Number 1801BK03 ' - .............. , April 9. 200~": Recommendations · · · ., Based on the data presented above and the conclusions, E2C makes the following recommendations: · Install VES 'and AS wells off'site to mitigate and control free-product in the groundwater; ·Obtain VE/AS remedial equipment, obtain APCD permits and operate remedial system, both on- and off-site; and · Perform quarterly groundwater monitoring and sampling and reporting for the duration of remedial operations plus a minimum of four quarters beyond system shut-down. Note: The RWQCB approved installation and operation of both the onsite and offsite remediation Systems by letter dated January 28, 2002. The letter also approved suspending analysis of groundwater samples for MTBE until verification monitoring is performed prior to site closure. ! I I E~C Remediation, LLC 2 prelect Number 1801BK03 Aoril 9. 2002 ~ : 1.0 INTRODUCTION ' This report contains the results of the First Quarter 2002 groundwater monitoring event for the Mr. Fast Service Station at 600 Brundage Lane (Site), Bakersfield, California. This report'is presented'to comply with the directive of the California Regional Water. Quality Control Board - Central Valley Region (RWQCB) dated September 21, 2001. This report presents the results of the work activities for quarterly groundwater monitOring and includes analytical data, groundwater elevation data, and interpretations of current groundwater qUality and flow direction beneath the Site and immediate vicinity. The report also includes an extensive review of the project history and a section on geology and hydrogeology. 1.1 Site Description The Site is located at 600 Brundage Lane in Bakersfield, California (see Figure 1 for Site location map). The Site is located in the SW 1/4 of SE 1/4, Sec. 31, T29S, R28E, Diablo Base and Meridian. The present property consists of a rectangular-shaped lot containing one building located in the Northeast corner (see Figure 2 for Site Plan). The building is currently occupied by a small retail business, Mr. Fast Gas & Liquors. Attached to the west side of the building is a fenced in storage area. Old dispenser islands and new dispenser islands are located along the south edge of the building. The property is bordered along its northern side by 1st Street, along its eastern side by T Street (on the South side of Brundage T Street becomes Berneta Avenue), along its southern side by Brundag. e Lane, and along its western side by the Kern Island Canal - Central Branch. Residential areas, interspersed with light commercial/industrial areas, are located adjacent to the Site. Vista High School is located just North of the Site. Highway 58, an East-West trending four-lane divided freeway is located approximately 450 feet south of the Site. 1.2 Regional and Site Geology and Hydrogeology 1.2.1 Regional Geology The property is located in the south central area of the San Joaquin Valley the Sierra where Nevada, Great Valley, and Coastal Range physiographic provinces meet. The southern end of the-Sierra Nevada Province is composed of a massive block of igneous and metamorphic rock Of Mesozoic age and older. This Sierran block, 40 to long, slopes 1 00 miles wide and 400 miles five to seven degrees beneath the San Joaquin Valley. The Coastal Range province on the west consists of tectonically deformed and fractured marine and non-marine sedimentary rocks of Jurassic, Cretaceous, and Tertiary age, dip beneath Joaquin which eastward the Sand Valley. The Great Valley province is a broad asymmetrical synclinal trough, which is known as the Sacramento Valley in the north and the San Joaquin Valley in the south. Beneath the southern San doaquin Valley floor, the Sierran plutonic and metamorphic rock block is overlain by consolidated marine rocks of Jurassic. and Cretaceous age. These rocks are overlain by continental marine and non-marine sedimentary rocks of Tertiary age, which are comprised of continental deposits of consolidated to semi-consolidated, fossiliferous sandstone, siltstone, and shale which thicken toward the south and west. The Tertiary rocks, in turn, are overlain by unconsolidated continental deposits, which consist of Pliocene to Holocene river and lake sediments comprised of gravels, sands, silts, and clays. I E2C Remediation, LLC 3 Proiect Number 1801BK03 Aodl 9. 2002 ~ - , - ,..?~?~- · Surface features of the floor of the San Joaquin Valley consist of dissected uplands, alluvial fans, overflow areas, and lake bottoms. Dissected uplands lie between the mountains and the nearly flat Valley floor 'and are manifest in Iow-lying hills through which perennial and features of reworked older alluvium. The alluvial fans intermittent streams flow. These consist · are the sites of' active stream deposition of Sand and silts derived from the Sierra Nevada and the dissected uplands. The overflow lands and lake bottoms lie in the central part of the Valley where silt and clay accumulate quiet in lake and marsh environments. 1.2.2 Regional Hydrogeology The Central Valley of California is underlain by a broadl thick hydrogeologic unit, which consists of soil and rock of varying porosity and permeability. Physical dimensions are approximately 50 miles wide at the widest point in the Valley, 400 miles long, and as much as 2,000 feet deep. Recharge to' regional aquifers consists of infiltration of seasonal precipitation and percolation of surface waters.. The Valley aquifer of greatest storage, highest quality, and greatest storage, highest quality, and greatest accessibility for domestic and agricultural use consists of the alluvial and lacustrine continental deposits extending to the depths of 1,5000 to 2,000 feet beneath the san Joaquin Valley floor. Lithologic and hydraulic properties of these sediments are largely the product of the sediment source and the depositional environment. These sediments range in size from clays to boulders and include all mixtures between the extremes. Those of the west side of the .Valley are derived largely from the Coastal Ranges, which tend to consist of shales and fine sandstones with limited permeability. The east sediments are derived mainly from granitic materials of the Sierra Nevada which are generally coarser and much more permeable. Sediments encountered during the boring procedures at the Mr. Fast and adjoining parcels consisted of alluvial deposits comprised of fine-to-coarse grained' sands containing quartzite and micas. Permeability in these sediments is high. Regionally, the depth to groundwater ranges between 150 and 200 feet below grade, according to the 1995 Water Supply Report published by the Kern County Water Agency in January 1998. Unconfined groundwater beneath the subject prOperty is significantly shallower than the regional depth, presumably because of the position adjacent to the unlined Kern Island Canal- Central Branch. In general the hydraulic gradient in the area is towards the northwest. Measurements made within shallow onsite and offsite wells over the course of this project have shown that the gradient in the unconfined aquifer beneath the Site has been consistently towards the southeast, away from the unlined canal. In January 2001, groundwater flow was also southeasterly at a gradient of 0.0172 fVft (see Section 4.5 below). 1.2.3 Site Specific Subsurface Stratigraphy and Hydrogeology In general, the subsurface at the Site is characterized by approximately 5 feet of silty sand at the surface followed by sand to approximately 50 to 55 feet bgs. Silty clays, clayey silts, sandy silts, and finer-grained silty sands occur from that depth to approximately 80 feet bgs. In previous borings for wells (e.g., MW-10), first groundwater was encountered at approximately 47 feet bgs. At the boring for well MW-11R, first groundwater was encountered between 46.5 and 50 feet bgs. At well MW-!2, first groundwater was not encountered until 56.5 to 60 feet bgs E2C Remediation, LLC ' 4 ._.. Project Number 1801BK03 Aoril 9. 2002 ....' . On-Site, specifically (wells MW-1 ·through MW-8), groundwater elevations increased an average. . of approximately 2 feet from June to August 2001. In the off-site area of wells MW-7, MW-9, and MW-10 groundwater elevations also increased, an average of approximately 1.7 feet. At wells MW-11R and MW-13, groundwater significantly, elevations increased approximately 7 feet each at wells MW-11R and MW-13. MW-11R is located approximately 90 feet south of MW-10 and MW-13 is located approximately 100 feet southeast of MW-11R in the general downgradient direction. This a very steep data indicates that groundwater gradient exists between MW-10 and MW-11R With the gradient flattening out somewhat in the area of MW-11R to MW-13. This is evident as depicted on Figure 3, the groundwater gradient plot for August A review of the for the Site revealed the cause for this change.in gradient. 2001. boring logs In the area from.wells MW-1 and MW-2 to the area of well MW-10, the top of the groundwater_ table occurs above the silty layer, which is generally encountered at approximately 50 feet bgs. This suggests that principal groundwater movement occurs on top of the silty laYer within the coarser-grained materials as flow from the recharge point along the canal until it reaches the area of well MW-10. Upon reaching the area of well MW-10, groundwater then matriculates down into the silty layer, which has a lower hydraulic conductivity than the coarser materials lying above (i.e., takes longer for the groundwater to move through the finer grained flow medium). This transfer from flow in coarser materials to flow in finer-grained materials creates a steeper gradient. As expected, groundwater elevations downgradient of the change in flow medium materials are much deeper than those upgradient of this change and that area downgradient can experience a wide fluctuation in levels due to even minor recharge or discharge effects. 2.0 SITE HISTORY 2.1 Initial Site Assessment In 1974, three (3) underground storage (USTs), tanks each 12,000 gallons in capacity, were installed at the Site. Figure 2 depicts locations of the USTs, dispenser lines, and pump islands. 2.2 Preliminary Site Assessment - Limited Soil Sampling - February 1992 In February 1992,. as part of a property transfer, a Transfer Environmental Site Assessment (TESA) and limited soil sampling was performed (Grisanti, 1992). Samples were collected from 15 to 17 feet below ground surface (bgs) beneath the tanks and from 3 to 5 feet bgs beneath the dispensers. In all, fifteen (15) locations were sampled. Soil samples were field screened using a portable field instrument. The field screening results indicated that the areas beneath locations B-2, B-8, B-9, and B-10 contained soil gas at detectable concentrations as follows: · B-2 was located at the south edge of T3; the. samples from 5, 10 and 17 feet bgs contained 100, 5,600 and 7,000 parts per million (ppm), respectively, of volatile soil gas; · B-8 was located at the north edge of the eastern dispenser of the n~)rthwest set of dispensers; the samples from 6, 8 10, and 14.5 feet bgs contained 1,200, 1,000, 700, and 300 ppm, respectively, of volatile soil gas; · B-9 was located at the north edge of the northwest dispenser of the northeast dispenser set; the samples from 3 and 5 feet bgs contained 2,000 and 800 ppm, respectively, of volatile soil gas; and .. E~C Remediation, LLC 5~. .~ i Project Number 1801BK03 ADd/9. 2002. I · B-tO was located at the north edge of the dispenser of the northeastern northeastern dispenser set; the samples from 2/4, and'8 feet bgs contained i 2,000, 3,000, and 1,000 ppm, respectively, of volatile soil gas. Soil samples were-also analyzed for Total Petroleum Hydrocarbons as gasoline (TpHg) and the volatile arOmatic gasoline constituents of benzene, toluene, ethylbenzene, and total xylenes I (BTEX). A few of ,the samples reported as containing hydrocarbon were' concentrations of fuel constituents as follows: i · B-2-17 (Boring B-2 at 17 feet) contained 3,000 mg/Kg TPHg, 36 mg/Kg benzene, 310 mg/Kg of toluene, 83 mg/Kg of ethylbenzene, and 501 mg/Kg of total xylenes; I · B-8-6.5 contained 8,000 mg/Kg TPHg and Iow concentratiOns of BTEX components; and · · B-10-8 contained 67 mg/Kg TPHg and Iow concentrations of BTEX components. I 2.3 Tank Tightness Testing. June 1993 On June 14, 1993, RedwineTesting Services, Inc. of Bakersfield,. California performed tightness Itesting of the three USTs (T1, T2, and T3) and associated dispenser lines. USTs T1 and T2 tested tight. The dispenser line for T3 did not test tight. Based on this failed test, site assessment work was performed. I 2.4 Site Assessment - July 1993 Western Environmental Engineers Company (WEECO) performed site assessment work in July I 1993 after one of the underground tank systems failed routine integrity testing (see Section 3.2 above). This work and the results were reported in aSite Assessment Report (WEECO, 1993). I The assessment consisted of advancing nine (9) borings (B-1 through B-9) collecting soil and soil samples for soil gas screening in the field and for chemical analyses at an analytical laboratory. Soil samples were analyzed by CHEMTEK, Inc. of Santa Fe Springs, California for I BTEX. A also contains of the Soil Gas data and analytical TPHg and Appendix copies laboratory .data sheets. I Soil samples contained to 2,465 parts million (ppm) of Total Petroleum Hydrocarbons as up per gasoline (TPHg) (sample B-2-40), 3.158 ppm of benzene (sample B-2-40), 2.223 ppm of toluene (sample B-2-40), 1.526 ppm of ethylbenzene (sample B-2-40), and 9,476 ppm of I xylenes (total) (BTEX) (sample B-2-40). Analyses were not preformed for Total Petroleum Hydrocarbons as diesel (TPHd, methyl tertiary butyl ether (MTBE), fuel oxygenates, and volatile organic cdmpounds (VOCs). Based on this data, the CBFD required further assessment to I adequately define the extent of soil and groundwater contaminant plumes at the Site. On June 9, 1994, WEECO submitted a Workplan for Further Site Assessment (WEECO, 1994). I In that Workplan, they proposed three borings be advanced around the boring B-2 area at T3. No record of the work proposed by WEECO in 1994 was found. It is possible that the work I p erformed by Advanced Environmental Concepts (AEC) in July 1995 (see Section 3.5 below) was the work proposed by WEECO in June 1994 (see Section 3.4 below). I I E~C Remediation, LLC · 6 /~r~_iect Number 1801BK03 ADril 9. 2002 2.5 UST Permitting - December 1993 to July 1994 In December 1993,~ a permit was applied for to remove the three USTs and replace them with two new USTs. The permit was reissued later in 1996 (see Section 3.6 below). The July 1, 1994 Permit to'Operate issued by the CBFD designated UST T3 as unUsable and it was taken out of service. 2.6 · Additional Soil and Groundwater Characterization - July 1995 On.July 10, 1995, AEC advanced three (3) soil borings (AB-l, AB,2, and AB-3) at the Site and colle, cted soil samples for chemical analyses. One of the borings (AB-2) was converted into grou'ndwater monitoring well MW-I. 2.6.1 Drilling Operations Soil boring AB-1 was drilled at a 20° angle to 45 feet bgs (42.2 feet) to sample beneath TI. Soil Boring AB-2 was advanced to 53 feet bgs and was converted into groundwater monitoring well MW-1. Groundwater was encountered in AB-2 at approximately 43 feet bgs. Soil boring AB-3 was advanced to 45 feet bgs. Soil samples were collected during drilling operations and the samples were submitted to an analytical laboratory for chemical analyses. Well MW-1 was developed and a groundwater sample was collected and submitted to the analytical .laboratory for chemical analyses. .2.6.2 Well MW-1 Construction Details This well was constructed to 53 feet bgs in the AB-2 boring. The screen interval is from 41 to 53 feet bgs and is comprised of 0.010" slot. Filter pack 'consisting of #600 Monterey sand was emplaced from the bottom to two feet above (39 feet bgs) top of screen. Hydrated bentonite chips were used to form a seal to the surface. The wellhead was encased in a steel traffic box for protection. 2.6.3 Soil Analytical Results Soil samples.were generally collected at five-foot intervals. Selected samples were to submitted Associated Laboratories, Inc., (Associated) of Orange, California. The samples were analyzed for TPHg and BTEX using EPA Methods 8015 and 8020, respectively. TPHg and BTEX compounds were reported in soil samples collected at all three borings at maximum concentrations as follows: · Boring AB-1 - TPHg was reported at a maximum concentration of 6,000 mg/Kg in the 25-foot sample; ·Boring AB-2 - Benzene was reported at a maximum concentration of 1.6 mg/Kg in the 40-foot sample; and · Boring AB-3 - TPHg was reported at a maximum concentration of 8.0 mg/Kg (25- foot sample) and benzene was reported at a maximum concentration of 0.15 mg/Kg (25-foot sample). I E2C Remediation, LLC 7 .: ~ :~ .. ,, ~c'~ '? , :. Prelect Number 1801BK03 Aoril 9. 2002 : ,..i~:~ I 2.6.4 Groundwater Analytical Results The groundwater sample was submitted to Associated. The sample was analyzed for TPHg I and BTEX EPA Methods 8015 and 8020, respectively. These results are using analytical summarized in Table 3 along with .historical groundwater analytical data and are summarized following: I' · 'TPHg was detected at a of 329 ppm (329,000 parts per billion concentration (ppb)); I · Benzene was detected at a concentration of 4.2 ppm (4,200 ppb); · Toluene was detected at a concentration of 113 ppm (113,000 ppb); · Ethylbenzene was not detected at or above the method detection limit of 0.5 I ppm; and · Xylenes were detected at a concentration of 40 Ppm (40,000 ppb). i Note: Analyses were not preformed for TPHd, MTBE, fuel oxygenates, and VOCs. These results indicated that groundwater beneath the Site had been impacted by fuel hydrocarbons. As such, the CBFD referred the case to the RWQCB. The RWQCB reviewed I the data and issued a letter that required additional assessment to work better evaluate the vertical and lateral extent of the unauthorized fuel release. I The 1995 work Was in Environmental Site Assessment 1995). July reported an report (AEC, 2. 7 RemOval of Old USTs and Installation of New UST I in May 1996, the permit to remove the old USTs and install a new UST was reissued. During the last week of May 1996, the old USTs, the associated piping and the old dispensers were removed. The old permit was approved to install two (2) new USTs. The permit reissue approved installment of one (1) UST. I During the first week in June 1996, a new UST, associated piping, and new dispensers were installed. The new UST installed was a 12,000-gallon Dual Compartment (compartment 1 - 7,000-gallon regular unleaded; compartment 2 - 5,000-gallon premium unleaded), double wall- i jacketed GS1746 Secondary contained UST that had passed a 35,000 volt Holiday test. On June 6, 1996, the new dispenser lines were tested for tightness and no leaks were found. On June 13, 1996, the alarms and sensors were tested and no problems were found. On June I14, 1996, Wegener Construction of Bakersfield, California tested the UST for tightness and no leaks were detected. I Note: The routine maintenance 2000 Showed that all testing performed on August 24, systems were in working order and functioning properly. I 2.8. Groundwater Assessment Workplan- February 1996 · In February 1996, AEC submitted a Workplan for groundwater assessment at the Site (AEC, I1996a). The Workplan presented proposed work to further evaluate the extent of hydrocarbon impacted soils and groundwater at the Site. In order to accomplish this evaluation, three borings were proposed with the collection of soil samples. The three borings would be i converted into groundwater monitoring wells MW-2, MW-3, and MW-4 and groundwater I E2C Remediation, LLC · 8 pro_iect Number 1801BK03 ' ADril 9. 2002,' · .;,.,-?~ ..'~_ .:~. , ..' ¢~.-:-~ samples would be collected. All samples would be analyzed for TPHg and BTEX compounds. · The RWQCB approved the workplan by letter dated March 12, 1996 (RWQCB, 1996a) and I the work in 1996' Section 2.9 below). AEC performed April (see 2.9 Site Assessment Work - April 1996 I On April 8, 1996, AEC advanced three borings at the Site and converted them into groundwater monitoring wells MW-2, MW-3, and MW-4. Figure 2 depicts the well locations. Each of these i three borings was advanced to 53 feet bgs with collection of soil samples. Samples from the 40- and 45-foot depths in each boring were chemically analyzed. 2.9.1 Well Installations I Wells MW-2, MW-3, and MW-4 were installed a manner, screen in like The interval was from ~41 to 53 feet bgs. The slot interval was 0.010". Filter pack sand consisting of #600 Monterey sand was emplaced from the bottom to two feet above the top of the screened interval. I used to seal the well to the surface. Each wellhead was Hydrated bentonite chips were enclosed in a steel traffic box for protection. ~ 2.9.2 Soil Sample Analytical Results All soil samples analyzed were reported as non-detect for TPHg and BTEX compounds at or above their respective method detection limits. I 2.9.3 Groundwater Analytical Results Water samples were analyzed for TPHg and BTEX using EPA Methods 8015 and 8020, I respectively. The results are summarized following (see Table 3 for summary of historical analytical data): · TPHg and BTEX were non-detect in the water sample from well MW-2; I · TPHg was detected at concentrations of 8,600 ppb and ,800 ppb 1 in the water samples from wells MW-3 and MW-4, respectively; i · Benzene' was detected at a concentration of 41 ppb in the water sample from well MW-3 while it was non-detect in the water sample from well MW-4; · Toluene was detected at a concentration of 42 ppb in the water sample from well I MW-3 while it was non-detect in the water samPle from well MW-4; · Ethylbenzene was detected at concentrations of 35 ppb and 0.75 ppb in the water samples from wells MW-3 and MW;4, respectively; I · Xylenes (total) were detected at concentrations of 3,000 ppb and 260 ppb in the water samples from wells MW-3 and MW-4, respectively; and · Free-product was observed in well MW-1. Based on the previously collected and this new data, AEC prepared a report detailing the above activities and recommended the following remedial actions at the Site (AEC, 1996b): I · A free-product recovery system be installed to remove free-product at well MW-l; · Perform tightness tests on existing USTs and associated piping; · Prepare a Remedial Action Plan for impacted soils and groundwater; I · Install a soil vapor sparging system extraction/air for remediation of impacted soils and groundwater; and · Install additional groundwater monitoring wells; I E~C Remediation, LLC 9 cer,~: . :~. _ 1801BK03 Aoril 9, 2002 2.9.4 RWQCB Review Repod of AEC 1996b The RWQCB reviewed the AEC 1996b repo~ and had the following comments in a leEer dated September 27, 1996 (RWQCB, 1996b): · That the canal west of the Site be included on the scaled Site Plan; ·That a Workplan be submitted to pedorm additional groundwater characterization to define the plume limits; · That groundwater at the Site be monitored and sampled on a qua~erly basis; · That groundwater samples be analyzed for total lead for two quaders; ·That groundwater samples be analyzed for VOCs using EPA Method 601 for two quaders; · That MTBE be added to the analyte list on a continuing basis at all wells; and · The RWQCB requested that the Workplan should contain maps and/or cross- sections that depict the lateral and vertical extent of soil and groundwater degradation for aiding in locating and evaluating locations for proposed soil borings and monitoring wells. 2.9.5 Groundwater Assessment Workplan - October 1996 AEC submitted a Workplan to fu~her define groundwater plume limits in October 1996 (AEC, 1996c). This Workplan p~oposed the following work: · Advance three (3) borings to approximately 53 feet bgs and conve~ them into groundwater monitoring wells MW-5, MW-6, and MW-7; and · Sample groundwater at the wells and have the samples chemically analyzed for TPHg and BTEX. 2.9.6 RWQCB Review of the AEC October 1996 (11/6/967) Workplan A discrepancy appears in the records at this point. The AEC Workplan on file at the CBFD is dated October 1996 (AEC, 1996c), however the RWQCB review was of a W0rkplan dated November 6, 1996 (RWQCB, 1996c). In any case, the RWQCB approved the recommendation to install the three (3) additional groundwater monitoring wells and also reemphasized the need for total lead and VOC analyses on groundwater samples for two qua~ers. 2.10 Additional Groundwater Plume Assessment - March 1997 On March 19, 1997, AEC advanced three (3) borings with.collection of soil samples at'the Site. The three borings were conveded into groundwater monitoring wells MW-5, MW-6, and MW-7 (see Figure 2 locations), were develoPed groundwater for The wells and samples were collected. This work and the results were repoded in the AEC, 1997 document. 2.10.1 Well Installations The boring for well MW-5 was advanced to 60 feet bgs. Groundwater was encountered at 50 feet bgs. The well was screened from 45 to 60 feet bgs with 0.010" slots. The filter pack Consisted of ~600 Monterey sand placed from the bottom to two feet above the screened inte~al. HYdrated bentonite chips were Placed to fOrm a seal to the sudace. The wellhead was encased in a steel traffic box for protection. The boring for well MW-6 was advanced to 55 feet bgs. Groundwater was"encountered at 45 feet bgs. The well was screened from 40 to 55 feet bgs with 0.010" slots. The filter pack consisted of ~600 Monterey sand placed from the bottom to two feet above the screened I E~C Rernediation, LLC 10 "' ' ' Proiect Number 1801BK03 April 9. 2002 I interval. Hydrated bentonite chips were placed to form a seal to the surface. The wellhead was encased in a steel traffic box for protection. IThe boring for well MW~7 was advanced to 58 feet bgs. Groundwater was encountered at 48 feet bgs. The well was screened from 43 to 58' feet bgs with 0.010" slots. The filter pack consisted of #600 Monterey sand placed from the bottom to two feet above the screened interval. Hydrated bentonite chips were placed to form a seal to the surface. The wellhead was encased in a steel traffic box for protection. I 2.10.2 Groundwater Elevations Groundwater elevations were determined and a groundwater gradient of 0.034 to the Southeast was calculated (AEC, 1997). I 2.10.3 Soil Sample Analytical Results Selected soil samples were submitted to Associated for chemical analyses. Soil samples were I non-detect at or above the method detection limits for TPHg and BTEX, except for the 45-foot sample from the boring for well MW-7 which was reported to contain concentrations of TPHg at 3 ppm, toluene at 0.2 ppm, ethylbenzene at 0.1 ppm, and xylenes at 0.7 ppm. I 2.10.4 Groundwater Analytical Results Water samples were collected from all seven (7) wells and were analyzed for TPHg and BTEX. I Analysis for MTBE was performed on the sample from well MW-1. The results are summarized in Table 3. Findings of significance are summarized following: · TPHg was reported at a maximum concentration of 210,000 ppb (well MW-l); '1 · 'Benzene was reported at a maximum concentration, of 2,400 ppb (well MW-7); · Toluene was reported at a maximum concentration of 27,000 ppb (well MW-l); i · Ethylbenzene was reported at a maximum concentration of 5,000 ppb (well MW- 1); · Xylenes were reported at a maximum concentration of 30,000 ppb (well MW-l); I · MTBE was reported at a concentration of 22,000 pPb at well MW-l; · Well MW-7 is an offsite well Iocated'downgradient across Brundage Lane; · Well MW-2, the upgradient well contained Iow' concentrations of TPHg (44 ppb) I and benzene (1 ppb); and · .Wells MW-5 and MW-6, the side-gradient wells, contained Iow concentrations of TPHg (320 and 60 ppb, respectively) and benzene (8.8 and 0.98 ppb, I respectively). 2.10.5 Site Assessment Report - April 1997 I AEC submitted a Site Assessment Report in April 1997 (AEC, 1997) that reported the work and results discussed above in Sections 2.9.1 through 2.9.3. Another date discrepancy was observed in the records. The copy of this report .on file with the CBFD is dated April 1997, I. RWQCB letter dated March 3, 1998 (RWQCB, 1998) indicated that this report was' however the dated May 23, 1997. Regardless of the date discrepancy, this report recommended the following: I · That quarterly groundwater monitoring continue; · That free-product removal start at well MW-i; and I · That a Corrective Action Plan (CAP) be prepared and submitted. I E~C Remediation, LLC 11 her 1801 3 A~rfl 9. 2002 I 2.10.6 RWQCB Review of AEC April 1997 Report The RWQCB reviewed the AEC April 1997 report and issued the fOllowing comments in a letter I dated March 3, 1998 (RWQCB, 1998): .. The RWQCB concurred with the recommendation to commence with .free- product removal at well MW-1 and that be considered, an Interim Remedial I Measure (IRM); · The RWQCB directed that a Workpian describing the free-product removal operations be submitted for review; .' I further definition and that a Workplan for · That the groundwater plume required adding an additional groundwater monitoring well south Of well MW-7 'be submitted for review; and i · That a CAP be developed. 2.11 AEC Workplans - May 1998 AEC submitted a Workplan that prOposed to install one groundwater monitoring well (MW-8) south of well MW-7 (AEC, 1998a). IAEC also· submitted a Workplan to remediate free-product at. well MW-1 (AEC, '1998b) and convert well MW-1 into a vapor extraction well, and to convert well MW-3 into an air sparge well. I 2.12 Quarterly Groundwater Monitoring and Sampling Quarterly groundwater monitoring and sampling commenced in October 1998. Each quarter, groundwater levels were measured and elevations were calculated, free-product was measured in wells, if present, and groundwater samples were collected and chemiCally analyzed. I. Quarterly monitoring data is summarized in Tables 2 (summary of groundwater elevation data) and 3 (summary of historical groundwater analytical data) for each quarter since quarterly sampling started. I Quarterly groundwater monitoring reports (QMRs) were submitted as follows: · Fourth Quarter'1998- Sampled 10/20/98, Reported 1/12/99 (AEC, 1999a); I First Quarter 1999 'Sampled 1/i 1/99, Reported 2/3/09 (AEC, 1999b); · · Second Quarter 1999 - Sampled 5/12/99, Reported 7/9/99(?) (AEC, 1999c); i · Third Quarter 1999 - Sampled 8/20/99, Reported October 1999 (AEC, 1999d); ' · Fourth Quarter 1999 - Sampled 12/07/99, Reported in AEC, 2000b; · First Quarter 2000- Sampled 3/30/00, Reported unknown date; ~ · Second Quarter 2000 - Sampled 7/3/00, Reported in AEC, 2000c; · · Third Quarter 2000-.Not sampled; and I · Fourth Quarter 2000 -'Sampled 01/03/01 by E2C, Reported in E2C, 2001. Note: Another date discrepancy was found with the Second Quarter 1999 report. The AEC I report is dated July 9, 1999, however, the August 3, 1999 RWQCB letter (RWQCB, 1999) states that this Second Quarter report was dated May 24, 1999. I E2C Remediation, LLC 12 Proiect Number 1801BK03 Aorfl 9. 2002 2.1Z 1 RWQCB Review of Second Quarter 1999 Groundwater Monitoring Report The RWQCB reviewed the AEC 'Second Quarter 1999 QMR and had the following comments (RWQCB, 999): 1 · The thickness of free-product at wells was not noted in the report. The RWQCB directed that current and historical thickness data in tabular form be provided in future reports in addition to depths to water and free-product; · Provide current and historical tabular data regarding method of extraction and volumes of extracted' free-product; · Provide an explanation as to the groundwater depth correction factor given in the report; Clarify wellhead elevation data and. describe the location and assumed elevation of assumed datum point, if used; provide information regarding wellhead survey as elevations do not correlate with the 7.5-minute topographic map of the area; · As EPA Method 601 constituents were not detected for two rounds, that analysis could be discontinued; · Provide copies of QMRS for October 1999 and January 2000 monitoring events; · Provide minimum of two quarters of groundwater quality data for total lead and ethylene dibromide (EDB) at all monitoring wells; · The proposed location of new well MW-8 south of well MW-7 (May 1998 Additional Assessment Workplan) may not adequately define the southern extent of the plume; provide a map showing a revised location; · The RWQCB requested that information regarding the operation and effectiveness of the vapor extraction/air sparging remediation system be provided since its startup in May 1999 (letter is included as Appendix C); · Describe procedures for measuring groundwater depths in the future, especially times between uncapping a well and measuring its water level; · Include analyses for EDB, total lead, MTBE, tertiary amyl methyl ether (TAME), di-isopropyl (DIPE), ethyl tertiary butyl (ETBE), ether ether and butyl alcohol (TBA);, if MTBE, TAME, DIPE, ETBE, or TBA are detected, confirm the presence using EPA Method 8260b; · Sample and analyze groundwater for general minerals, nitrate, and total Kjeldahl nitrogen (TKN) during two non-consecutive sampling events,' at a minimum of three wells, including the upgradient well; and · By October 1, 1999, notify all current record holders of fee title of proposed actions at the Site (adjacent property owner notification). 2.13 Free-Product Removal Free,product was measured up to 0.29 feet at well MW-1 (May 1999) and 2.67 feet at well MW- 7 (May 1999). Free-product removal commenced on May 12, 1999 (AEC, 2000b). Free- product removal was performed using a bailer by hand at wells MW-1 and MW-7. Between 5/12/99 and 8/20/99 a total of 0.85 gallons of free-product was removed from well MW- 1 and a total of 7.35 gallons was removed from well MW-7. The records available do not indicate if free-product was removed from any wells after the August 1999 date. E~C Remediation, LLC 13 Proiect Number 1801BK03 Aoril 9. 2002 .' 2.14 Soil Remedial System Installation and Operation - April to August 1999 As wells MW-1 and MW-3 were located close to the soil source area, these two wells were converted into vapor extraction (VE) wells in April 1999. The wells were:manifolded to a .Pa[agon ET-250 Thermal Oxidizer vacuum system in April '1999 (AEC, 2000b). The vapor extraction system' became operational on May 7, 1999. Groundwater elevation data recorded on May 12, 1999 and results of the laboratory analyses of samples collected on that same day indicated that application' of vacuum within the extraction wells had changed the position of the existing plume and the groundwater dynamics. Based on these measurements and laboratory results, the vacuum magnitude was diminished and the air' injection suspended in order to prevent further southward migration of free phase gasoline. The Paragon Thermal Oxidizer portion of the. system was leased from Vapor Extraction Technologies', Inc. (VET). The Paragon unit functioned intermittently frOm the initial startup time through June 2, 1999 when it failed and could not be restarted. The system remained out of service through. June 22 due to undiagnosed electrical problems. It was restarted June 23 and ran continuously through June 30 when additional electrical problems caused another failure. The machine remained out-of- service, thrOugh August 2 at which time it was successfully repaired and restarted. Another. failure on August 6 prompted VET to remove the machine from the site and transport it to their Orange County facility for overhaul. According to AEC (AEC, 2000b),' no measurable vacuum was detected within any of the other monitoring wells during the initial startup of the system, even when both MW-1 and MW-3 were used for vacuum simultaneously. This information, coupled within the relatively Iow volume of gasoline removed during the 35-day operation of the system (approximately 464 gallons, calculated from periodic flow rate and LEL measurements), indicated that the overall efficiency of the system was inadequate with only two wells installed 2.15 RWQCB Review of 10/99 QMR & Additional GW Assessment Workplan 'The RWQCB reviewed the October 8, 1999 QMR and a November 1999 Additional Groundwater Assessment Workplan both prepared by AEC. Based on their review; the RWQCB had comments and requested additional data and/or work, which are summarized following: ·Clarification of:the AEC conclusions regarding the inadequacy of the previously operated VE system; ·That additional wells be constructed in such a manner as to accommodate large seasonal fluctuations of the groundwater table at the Site; · The RWQCB agreed with the placement of proposed well MW-8 and requested an additional well west of well MW-7; the RWQCB proposed placing this well west of MW-7 in the City of Bakersfield right-of-way to expedite installation; ·That an additional well be placed adjacent to Brundage Lane between wells MW- 3 and MW-5; · Submit'an amended Workplan to addreSs the RWQCB comments; · To include in the amended Workplan a description of the method to be used to determine the location of monitoring wells and the elevations, of the measuring points and to surVey all existing and new wells using a licensed Land Surveyor; and ·Provide information regarding the location of all drinking water supply wells within a 1/2-mile radius of the Site. E2C Remediation, LLC 14 '~'=':~ /ect' ' Number 1801BK03 ADfil. 9. 2002 2.16 Revised Additional Groundwater Assessment Workplan - February 2000 AEC submitted a revised Workplan that proposed installing, four (4) groundwater monitoring I wells MW-8 through MW-11, one onsite (MW-8) and three offsite. In this Workplan, one round of groundwater mineral analyses were also summarized. i 2.17 RWQCB Review ofRevisedAdditional GWAssessment Workplan The RWQCB reviewed the revised Workplan and had comments (RWQCB, 2000a) which are summarized following: ~ · Soil samples from well boreholes must be collected from 5 feet bgs to total depth; ,"" soil samples must be analyzed for BTEX/MTBE/TPHg Using EPA Methods 8020/8015; I · The monitoring well survey must include sufficient off-site and onsite landmarks; · That investigation and cleanup be expedited; i · Provide an Interim Corrective Action WOrk Plan (ICAWP) for remediation of the Site; · Submit a report documenting well construction and sampling by 15 June 2000; I · Submit the ICAWP by 30 May 2000; and · Submit the landOwner notification information as requested in the 3 August 1999 letter. I 2.18 Additional Site Assessment Work - April 2000 I Two (2) soil borings were advanced with the collection of s°il samples. The borings were designated VE-1 and VE-2 and were converted into VE wells. Soil samples were analyzed for BTEX and MTBE. The samples from VE-1 contained TPHg at a maximum concentration of 210 i milligrams' per kilogram (mg/Kg, which is equivalent to ppm) in the sample from 35 feet below ground surface (bgs). The only BTEX compound reported was xylenes at a concentration of 9.9 mg/Kg (20-foot sample from boring VE-1). MTBE was not reported in any of these soil samples. i Apparently, the newly installed VE wells were put online and no significant increase in influent concentration was observed, therefore, the Paragon VE system was shut down (AEC, 2000b). i 2.19 Groundwater Monitoring Well Installations - June 2000 On June 29 and 30, 2000, four (4) additional soil borings were advanced with collection of soil samples. The borings were converted into groundwater monitoring wells MW-8, MW-9, MW-10, I and MW-11 (see Figure 2 for locations). Well MW,8 was placed onsite, the other three were placed offsite. The installation of these wells was reported in the AEC, 2000b document. These four (4) wells were developed on July 3, 2000 and then sampled after development in I conjunction with the existing wells at the Site. Soil samples were analyzed for TPHg, BTEX, and MTBE. All samples were reported as non-detect except for the 40- and 45-foot samples from boring MW-8 and the 50- to 60-foot samples from boring MW-11 (Table 9. in I Appendix E presents a summary of soil analytical data excerpted from AEC, 2000b). 2.19.1 Boring MW-8 Analytical Results for Soil Samples IThe 40-foot sample was repOrted to contain Iow concentrations of toluene (6.97 mg/Kg) and xylenes (19.1 mg/Kg). The 45-foot sample was reported to contain concentrations of TPHg (11.4 mg/Kg), benzene (5.36 mg/Kg), toluene (365.5 mg/Kg), ethylbenzene (201 mg/Kg), and '1 xylenes (745 mg/Kg). Due to these high concentrations, the detection limit for MTBE was 13 I E~C Remediation, LLC 15 Proiect Number 1801BK03 Aoril 9. 200? mg/Kg, so it is not known if MTBE was present .'in this sample at Concentrations below 13 ' mg/Kg. 2.19.2 Boring MW- 11 Analytical Results for Soil Samples The 50-foot sample was reported to contain.low concentrations of BTEX (benzene at 0.0615 mg/Kg, toluene at 0.129 mg/Kg, ethylbenzene at 0.043 mg/Kg, and xylenes at 0.220 mg/Kg). The 55-foot sample also contained Iow concentrations of BTEX (benzene at 0.0607 mg/Kg, toluene at 0.207 mg/Kg, ethylbenzene at 0.124 mg/Kg, and xylenes at 0.357 mg/Kg). The 60- foot sample was reported to contain concentrations of toluene (0.0169 mg/Kg, ethylbenzene (0.00942 mg/Kg, and xylenes (0.0433 mg/Kg). MTBE was reported as non-detect in each of · these samples. 2.19.3 Third Quarter 2000 Groundwater Monitoring and Sampling Groundwater at new wells MW-8 through MW-11 was sampled on July 3, 2000 in conjunction with the third quarter sampling round. The analytical results are summarized following (see Table 3 for tabular summary): · Water at well MW-7 was not sampled as that well contained free-product; · TPHg was non-detect in the water samples from wells MW-2, MW-3, MW-4, MW- 5, MW-6, MW-9, and MW-10; · TPHg was detected at concentrations of 130 micrograms per liter (l~g/L) and 260 ~g/L in the samPles from wells MW-1 and MW-8, respectively; · Benzene was detected at concentrations of 8.2 tzg/L and 820 I~g/L in the samples frOm wells MW-1 and MW-8, respectively; · Toluene was detected at concentrations of 8.8 p,g/L and 64,000 ~zg/L in the samples from wells MW-1 and MW-8, respectively; · Ethylbenzene was detected at concentrations of 1,600 pg/L and 6,300 Izg/L in the samples from wells MW-1 and MW-8, respectively; · Xylenes were detected at concentrations of 24,000 lzg/L and 73,000 Izg/L in the samples from wells MW-1 and MW-8, respectively; and · MTBE was only detected in the sample from well MW-8 at a concentration of 550 ~zg/L. , 2.20 2000 Groundwater Elevations July Groundwater elevations prior to July 2000 were measured from a relative datum point, the top of one of the existing wells. AEC had the wells surveyed by a licensed surveyor on July 21, 2000. Their July 2000 measurements were based on that survey. Table 2 contains a summary of historical groundwater elevation data. Based on the July 2000 measurements, AEC calculated the groundwater fl0w to be S43°E with a gradient of 2.1 feet of vertical drop per 100 feet of horizontal distance (ft/ft), which equals 0.021 fi/ft. 2.21 RWQCB Response - 11/17/00 Based on a review of the work discussed above, the RWQCB issued a directive dated November 17, 2000 (RWQCB, 2000c) requesting the following~. · Prepare a summary report of previous site assessment and remedial efforts to date; E~C Remediation, LLC 16 8 ? ~' :"" Proiect Number 1801BK03 ADd/9. 2002 I'ii';" -· Provide the locations, uses and construction details of water wells located within 2,500 feet of the Site; i · 'Inspect the condition and construction of all monitoring and vapor extraction wells on-site and off-site. Evaluate the utilitY of the existing vapor extraction wells for future remediation. Prepare a report on the results of this inspection and i evaluation. · Have the locations and elevations of all wellheads surveyed by a licensed land surveyor and submit the results to the RWQCB; I · That quarterly groundwater monitoring continue and that a report detailing the monitoring and results be submitted; · Prepare a Workplan for further assessment and remediation of soil and I groundwater impacted by petroleum hydrocarbons on-site and off-site; and · In addition, the RWQCB also requested that compliance with "landowner notification" requirements found in Health and Safety Code, Section 25297.i5(a). IUpon receipt of this directive, the Site owner procured three bids from Consultants to comply with the requirements of the directive. After review of the bids, the Site owner contracted with I Inc. of Bakersfield, California. to complete the additional of work. E2C requested a E2C, scope time extension for the submittal of the report addressing the above items and that extension was granted by the RWQCB (RWQCB, 200Od). I 2.22 RWQCB Response - 11/29/00 The RWQCB issued an amendment to the November 17, 2000 directive (RWQCB, 2000a), Iwhich requested that the work plan must also evaluate the need for, and propose further assessment of impacted soil and groundwater, if necessary, and a time schedule for the proposed work and submission of reports: The RWQCB allowed a time extension to complete I the required work. 2.23 Additional Assessment Work- January 2001 I This Section discusses the Tasks requested by the RWQCB directive of November 29, 2000. Note: The Summary Report of Previous Assessment & Remedial Work is included within the Site History of this report. I 2.23.1 Surrounding Area Water Well Survey · A review of Kern County Water Agency,. California Water Service (CWS), and State of California I Water Resources (SDWR) records was performed to identify water supply wells within 2,500 feet of the Site. The following Subsections contain discussions of th'e results. 2.23.2 Well ID# 35-02 (CWS) I The well is located at 730 Brundage Lane approximately 600 feet west of the Site. The well is drilled to 600 feet bgs and the bowl is Set 200 to 300 feet bgs. The pumping depth is I approximately 160 to 180 feet bgs and the Well is sealed at 100 feet bgs. In December 2000, the water level was at 190 feet bgs and there is no problem with water quality (oral communication with CWS January 2001). I 2.23.3 Well ID# 36-02 (CWS) The well is located at the intersection of 3r'~ Street and V Street approximately one-half mile i northeast of the Site. The well is drilled to 600 feet bgs and the bowl is set 200 to 300 feet bgs. i E¢C Remediation, LLC 17 The pumping depth is approximately 160 to 180 feet bgs and the well is sealed at 100 feet bgs. There is no problem with Water quality (oral communication with CWS January 2001).. 2.23.4 · Well ID# 159-01 (CWS) The.well is located at the intersection of Texas Street and Bliss street approximately one-half mile northeast of the Site. The well is drilled to 600 feet bgs and the bowl is set 200 to 300 feet The pumping.depth is approximately 160 to 180 feet bgs and the well is sealed at 100 feet bgs. bgs. There is no problem with water quality (oral communication with CWS January 2001). 2.23.5 Well 30/28-6 (SDWR) This well is located at 251 S. Union Avenue, the corner of S. Union Avenue and Terrace Way approximately 2,600 feet southeast of the Site. The well's owner is listed as Casa Royale Motor Inn. Between 8/24/70 and 8/27/70 a 24-inch boring was drilled to 520 feet bgs using a rotary rig. Steel casing (1/4" gauge) was set from the surface to total depth. The screen consists of 14 perforations per row with three (3) rows per foot and is set from 250 to 500 feet bgs. Pedorations are 2 1/2" by 1/8". 'Birds Eye' gravel was used for the filter pack. The well is sealed from the surface to 50 feet bgs. 2.23.6' Existing Well Inspection On January 3, 2001, the existing wells at the Site were inspected. Following is a summary of the inspection findings: · All wells were free and clear from the surface to the total depth; · Wells MW-9 and MW-10 casings were bowed slightly at approximately 20 feet 'bgs such that a pump cannot be lowered to the bottom. However, a bailer can be lowered to the bottom; these two wells will be purged in the future using a bailer; · All monitoring wells contained significant black silty-like materials at the bottom; at this time the wells require re-development; · All wellheads were in good condition; · Wells VE-1 and VE-2 were dry, in good condition and were free and clear to their bottoms; and .· Two riser pipes were observed; these pipes appear to be connected to the two VE wells; one of the pipes was emitting heavy fuel hydrocarbon odor; E2C personnel capped both open pipes. 2.23. 7. Survey Wells During January 2001, E2C had Alta Engineering/Hughes Surveying (Hughes) (State of California Licensed Land Surveyor No. 3779) resurvey the wells for horizontal and vertical control based on a Bench Mark (Elevation 396.41 feet above mean sea level, or +msl) in the abutment of the bridge that spans the Kern Island Canal - Central Branch proximate to the Site. Hughes opened each well' and surveyed the top of the PVC casing at the north edge of the casing for vertical control. Hughes marked the surveyed spot with a black marker pen. Horizontal control was established to the center of the steel traffic box that protects each well. 2.24 Fourth Quarter Groundwater Monitoring and Remedial Action Plan On January 3, 2001, EeC persOnnel conducted Fourth Quarter 2000 groundwater monitoring activities, which included measuring depths to groundwater, checking wells for free-product, purging wells, and collecting groundwater samples. On January 24, 2001, E~C submitted a E¢C Rernediation, LLC 18 . . ,..~' ~ ,, .;~.. Project Number 1801BK03 A.Dril 9, 20n2 ' repo~ detailing the activities and results of the Fou~h Qua~er 2000 groundwater monitoring. Included within this'report E2C submitted a Remedial Action Plan (RAP). The RAP was submitted to comply with the RWQOB directive of November 17 and amended directive of November 29, 2000, which mandated the preparation of a Workplan for fu~her assessment and remediation of soil and groundwater impacted by petroleum hydrocarbons °n-site and off-site. The RAP presented the scope of sewices required to peflorm additional site assessment work and to install a soil and groundwater remedial system. 2.24.1 RWQCB Remedial Action Plan Response - Februa~ 28, 2881 In a letter dated Februa~ 26, 2001 the RWQCB conditionally approved potions of the RAP submitted by E20 on January 24, 2001 (RWQCB, 2001). Following is a summa~ of the approved potions of the RAP and potions added by the RWQOB: · RegulatOry Liaison, Encroachment Access/Well Permitting & Project Management; · Well Installation - three (3) off-site groundwater monitoring wells, one (1) deep offsite groundwater monitoring well, one (1) 37-foot shallow soil vapor extraction well, and two (2) air sparging (AS) wells (Note: one existing vapor extraction well also to be used in pilot test.); Peflorm SV~AS PilotTest; Prepare and submit Repo~ of Findings for Pilot Test; Peflorm quarterly groundwater monitoring and sampling (three qua~ers); and Prepare and submit qua~erly groundwater monitoring repo~s 2.25 First Qua~er 2881 Groundwater Monitoring On March 2, 2001, E~O personnel conducted First Quarter 2001 groundwater monitoring activities, which included measuring depths to groundwater, checking wells for free-product, purging wells, and collecting groundwater samples. 2.25.1 Groundwater Elevations GroundWater elevations for this sampling round are summarized in Table 2 with historical elevation data. Based on the: March 2, 2001 measurements, groundwater flow at the Site was Southeast at a steep gradient of 0.0180 ~ft. ~.~.~ ~roun~water Analytical Results Laborato~ analytical results for the Second Qua~er 2001 are summarized along with historical data in Table 3. The results of these chemical analyses are summarized following: · Well MW-1 was not sampled due to.the presence of 0.37-foot of free-product (see Figure 4 for estimated areal extent of free-product plume);. Significant concentrations of toluene, ethylbenzene and total xylenes were detected in the water sample from well MW-7 (9,400 ~g/L, 4,100 ~g/L, and 28,000 ~g/L respectively) Figure 5.depicts the isoconcentration plot for toluene; Significant BTEX concentrations were reposed in the water sample from well MW-8 (toluene at 53,000 ~g/L, ethylbenzene at 4,000 Hg/L, and total xylenes at 26,000 ~g/L) Note: Due to a dilution factor, benzene is reported at a concentration of.<200 ~g/L; E,C Remediation, LLC 19 · ' : ..... , Pro_ie~t Number 1801BK03 April 9. 2002 ·Very high concentrations of TPHg were detected in the water samples from wells ' MW-7, 24,940 ~g/L, and MW-8, 34,280 p.g/L and a significant concentration of 2,704 ~.g/L was detected in the water sample from MW-3 (see Figure 6 for a TPHg isoconcentration plot); · ' . All gasoline range constituent hydrocarbons that were tested for in groundwater I samples from monitoring wells MW-2, MW-4, MW-5, MW-6, MW-9 and MW-10 were not-detected at or above the minimum detection limit; · Analysis of a free-product sample from MW-1 revealed a composition of I predominately volatile aromatic constituents xylenes, toluene, and ethylbenZene, with the benzene fraction reported as 1.07 percent by weight. In addition, no oxygenate compounds or alcohols were reported in the sample; and I · MTBE was non-detect in any of the water samples submitted for'analysis. 2.25.3 Conclusions I Based on the data presented above, E2C made the following conclusions: · The groundwater gradient at the Site was steep, and was calculated at 0.0180 _ flYft in a southeasterly direction; I · All. existing monitoring wells need redevelopment to clear fines from the casings and redevelop the filter packs; · Significant concentrations of TPHg and BTEX compounds, excluding benzene, were detected in the water samples at two of the wells, MW-7, and MW-8, and free product was found in MW-1; i · The downgradient moni'toring well, MW-11 was dry this monitoring event, however as noted in the Fourth Quarter 2000 report this well has been impacted by significant concentrations of TPHg and BTEX which indicates that the ~ downgradient extent of the plume remains undefined; · The groundwater contaminant plume at the Site is long and narrow, which indicates that it is directly controlled by the steep groundwater gradient; t · The lateral extent of the groundwater, plume is defined in the cross-gradient · directions as indicated by the non-detect concentrations in wells MW-2 (upgradient), MW-4, MW-5 (east side-gradient), and MW-6, and MW-9 (west I side-gradient);' and · The presence of benzene at well MW-1 cannot be excluded due to the presence · of free product. Also, benzene detection limit for well MW-7 was 20 lzg/L and 200 p.g/L for MW-8. The water'samples from these monitoring wells required dilution due to the elevated Concentrations of TPHg and other BTEX compounds, therefore, benzene ~:ould be present at concentrations between 0.5 and 20 ~g/L I at MW-7'and concentrations between 0.5 and 200 Pg/L in MW-8. 2.25.4 Recommendations I Based on the data presented above and the conclusions, E2C made the following recommendations: · Implement RWQCB approved portions.of the RAP submitted on January 24, I 2001 and those details added the RWQCB in letter dated by a February 26, 2001. The Workplan calls for installation of three (3) additional groundwater i monitoring wells to define the areal extent of the groundwater plume, one (1) i E~C Remediation, LLC 20 _ 1801BKO~ Aoril 9. 200~ deep offsite groundwater monitoring well to help assess vertical concentration gradients, three (3) air sparging wells and one (1) shallow soil vapor extraction well. The new AS and SVE wells would be utilized along with an existing VE well I a pilot test; .. for SVE/AS · Prepare and Submit Report of Findings for the svE/As Pilot Test; ' t · Develop new wells and redevelop all existing wells; 't · Perform quarterly groundwater monitoring and sampling and reporting for an additional three quarters; and I ° Amend the analytical program to test for TPHg using EPA Method 8015M, BTEX '. using EPA Method 8020 and prior to site closure, analyze groundwater samples for the fuel oxygenates using EPA Method 8260b to verify, non-detection of these I compounds. 2.26 Regulatory Compliance I On March 29, 2001 E2C submitted an addendum to the RAP (see Section 2.24 above), which was submitted on Januaw 24, '2001. The Addendum was developed pursuant to the RWQCB letter dated February 26, 2001 in which the RWQCB approved E2C, Inc.'s Workplan to perform I assessment remedial action at the Mr. Fast property at 600 Brundage Lane additional Site and in Bakersfield, California with comments (see Section 2.24.1 above). In their comments, the RWQCB requested addendums to the Workplan regarding well construction diagrams for I proposed a description vapor sparging pilot testing. In addition, wells and of soil extraction/air the RWQCB requested sampling of the free-product and chemical analysis thereof. I The addendum presented the well construction and of the SVE/AS diagrams a description pilot testing proCedures and methods. In addition, the free-product was sampled and analyzed. In general, the product sample was comprised predominately of the volatile aromatic constituents I xylenes, toluene, and ethylbenzene, with the benzene fraction reported as 1.07 percent by weight. In addition, no oxygenate compounds or alcohols were reported in the sample. As a result of the non-detection of oxygenates in water samples for two quarters and also based on I the results of the fingerprint analysis of the free-product sample, E2C recommended a change in the analytical program for grou~ndwater samples as follows: °. TPHg using EPA Method 8015M: )1~ · BTEX using EPA Method 8020; and · Prior to site closure, analyze groundwater samples for the fuel oxygenates using I EPA Method 8260b to verify non-detection of these compounds. Also included in the Addendum was a section on the condition of well MW-11. On March 2, I 2001, this well was observed to be dry. It appeared that the bottom 12 feet of the well had been filled with fines. E2C recommended that this well be replaced. I On 20 April 2001, the RWQCB approved th'e Addendum to Remedial Action Plan (see Section 2.24.1 above) with minor comments (RWQCB, 2001d). 2.27 Request to Start Off-Site Remediation I · Based on a data review of additional site characterization work and the Second Quarter 2001 groundwater monitoring data, E=C submitted a request to the RWQCB initiate off-site i ' remediation and install monitoring wells (shallow and deep) along Fig Street. This request was' I: E~C Remediation, LLC 21 Pro/ect Number 1801BK03 , ADril 9. 2002 ~''., predominately based on the amount of free-product (approximately 5 feet) observed in well MW- .. 12.and the significant concentrations of fuel hydrocarbons reported at wells MW-13 and MW-14 (see Table 3). In addition, a new remediation technolOgy (ISO-GENTM) was proposed. ISO-GENTM isa downhole'grOundwater electrolysis system to aid in providing high concentrations of dissolved oxygen to enhance microbial degradation in the Iow-middle concentration portions of the dissolved phase plume. A copy of the ISO-GENTM protocol.was provided in the request (E2C, 2001). 2.27.1 RWQCB Approval of Additional Well Installations · , On September 21, 2001, the RWQCB by letter approved the well installation portion of the Request to Install Off-Site Wells and an Off-site Remediation System (RWQCB, 2001e). 2.28 Report of Findings for Well Installations E2C obtained obtaining drilling permits from the Kern County Environmental Health Department (KCEHD), access encroachment permits from the City of Bakersfield Building Department (for wells in street), and off-site owner permission for installation of well MW-12. Monitoring wells MW-12 through MW-14 were then installed in off-site locations. Well MW-11R was also installed to replace well MW,11. SVE and AS wells were also installed onsite to conduct the SVE/AS Pilot Test. 2.28.1 Soil Analytical Results A'soil boring was advanced to the desired depth at each well (monitoring, SVE or sparge) location. Figure 2 depicts locations. Soil samples were collected at 5-foot intervals from the surface to total depth. Low concentrations of fuel hydrocarbons were reported in soil samples from each boring, except for the borings for well MW-11R and VE-3. All soil samples analyzed from these two borings were reported as non-detect for all analytes of concern. Of significance, the soil samples analyzed from the boring for well MW-12 contained moderate concentrations of TPHg and BTEX, specifically the sample from the 50- and 55-foot depths, which is within the capillary fringe in that area. In addition, free-product was noted on the sampling device when samples were collected at those depthS. This suggested the potential for free-product On groundwater at this location. 2.28.2 Shallow Groundwater Monitoring Well Installations As such, monitoring wells MW-11 R, MW-12 and MW-13 were each advanced to 65 feet bgs and constructed similarly using 25 feet of 0.010" slotted casing at the bottom. Upon completion of the new monitoring wells (shallow and deep), the new wells were temporarily surveyed pending resurvey of all wells to meet State of California Assembly Bill 2886 (AB 2886) requirements. Elevations of existing wells were used to tie in the new wells to 0.01 foot. 2.28.3 Deep Groundwater Monitoring Well MW-14 Well MW-14 was installed to monitor the deeper portion of the first water-bearing zone. MW-14 was placed proximate to MW-13 (see Figure 2 for locations). This well is screened from approximately 68 to 78 feet bgs with 0.010" slotted casing. E~C Remediation, LLC 22 Project Number 1801BK03 , April 9. 2002 ' 2.28.4 Installation of AS Wells Three (3) AS wells were installed (see Figure 2 for locations). As with the monitoring wells, soil borings were advanced to the desired depth with the collection of soil samples at five-foot intervals. AS wells AS-1 and AS-2 were.constructed in a similar manner. AS-1 and AS-2 At air sparge wells AS-1 and AS-2, a 2.5-foot long microporous sparge point was set at the bottom (64 to 66.5 feet bgs. AS-3 At air sparge well AS-3 a clayey silt layer was encountered at 61.5 feet bgs, so this well was completed above that layer. A 2.5-foot long microporous sparge point was set at the bottom (59 to 61.5 feet bgs. 2.28.5 Installation of Well VE-3 This well was constructed in such a manner that the slotted interval should remain above the water table throughout the year. The soil boring was advanced to 37 feet bgs at which point the well was constructed with twenty feet (10 to 30 feet bgs) of slot (0.020") at the bottom. 2.29 Report of Findings for SVE/AS Pilot Test During the period of May 22 through May 29, 2001, E2C conducted.a vapor extraction and air - sparge assess use vapor extraction and air sparging pilot study to the site condition for of techniques ir~ the remediation of petroleum hydrocarbon impacted soil and groundwater. 2.29.1 Air Sparge Observations The air sparge study included the use of compressed air, to activate the sparge wells, compressed helium, as a'sparging source tracer, flow and pressure gauges, helium detectors, and a dissolved oxygen meter.' Helium observations were inconclusive, however, the dissolved oxygen observations revealed significant data. Dissolved Oxygen Observations Generally, dissolved oxygen (DO) concentrations increased in wells after startup of the air sparge unit. Significant increases were observed at several of the wells. MW-6 - Significant increase in DO was observed in MW-6 (1.40 mg/L at start of test and 12.50 mg/L at end of test), which is located 84 feet from AS-l, 83 feet from AS-2 and 128 feet from AS -3. MW-8 - At well, MW-8, located between AS-2 and AS-3, initial DO'was measured at 1.60 and 2.20 on May 21, the day before starting the test. During the first day (May 22) cf..teSting DO ranged between 0.60 and 1.00. After the first day, DO increased significantly ranging from a Iow of 1.80 (May 29, test restart) to a high of 6.60 (May 24). MW-3 - Likewise, DO increased at MW-3, located 47 feet from AS-2 and 53 feet from AS-1. The DO increase response was fairly rapid, as noted at well MW-3 on May 29. The test was restarted and by the end of the test that day, DO had increased to 4.00. MW-1 - MW-l, located 15 feet from AS-l, showed similar DO response as seen at MW-3. E¢C Remediation, LLC 23 Project Number 1801BK03 , A~)ril 9. 20nP I MW-4 - MW-4, located 35 feet from AS-1 and 40 feet from AS-3, ·showed dramatic DO increases up to .a high of 8.40 on May 23. As at MW-3, DO increased significantly on the last' I day of testing from a measurement of 2.40 at restart to 5.60 by end of day. 2.29.2 Air Sparge. Test Conclusions .. The results indicated the acceptability of the aquifer for air sparging and a conservative estimate I of air sparging radius of influence was calculated to be in excess of 30 feet. This effective th'e radius of influence was shown by large increases in DO at well MW-6, located 83 feet from AS- 2. The overall effectiveness of the combined system (air sparge and SVE) is also seen in the I water elevation rise in well MW-7 of 0.6 foot from approximately start to end of test. MW-7 is located across Brundage Lane approximately 77 feet from AS-2, 92 feet from AS-3, and 118 feet from AS-1. I Of significant.note was the rate at which influent concentrations changed with time on air sparge. Initial influent concentrations were Iow (200 ppm). As sparge duration increased, I influent concentrations increased such that by the end of the testing (approximately 5 days) influent concentrations had risen to a high of approximately 31200 ppmv. This relatively slow rise in influent concentration appeared to be influenced by two factors: I · to saturation of the groundwater such that air is no longer going into Time reach DO solution, but is instead stripping the hydrocarbons from the water in-situ; and i · The type of contaminants present. The Summa Canister test on Influent #10 indicated that 99%+ of influent was at C6+ and that the volatile aromatics comprised less than 2% of the total influent. Finally, of the volatile fraction xylenes represented, 65% of the total, i whereas benzene only represented 3% of the total. The time to reach DO saturation of the water at this site was not surprising due to the close i proximity to an unlined canal and the steep gradient at this site. When sparge air is introduced, the steep gradient moves the oxygen away from the point of release rapidly, thus requiring high volumes and pressures of air to achieve "in-situ" stripping; however, the steep gradient assists in distributing DO downgradient. As long as the steep gradient required pressures and volumes I of air and sufficient downgradient plume controls are considered in the design of the overall remediation system, the steep,gradient is beneficial to the remedial process. I relatively that the plume is either old and/or The nature of the contaminants indicated weathered, or earlier remedial efforts removed the lighter end fractions of the plume. This is significant insofar as "in-situ" stripping will require high sparge pressures and that aerobic I degradation will be a remedial mechanism. Groundwater air prevalent sparging provides dissolved oxygen at a concentration approximately 10-12 mg/L. Calculations of the mass of contaminants present indicates that DO at levels in excess of 15 mg/I will be neceSsary to I accomplish complete mass removal. Because groundwater air alone cannot sparging provide . DO at .15+ mg/L, it would be necessary to install ISO-GEN'tM oxygen generators in selected areas of the plume (directly downgradient of the two identified sourCe areas). This is not to say I that in the higher concentration source areas groundwater air sparging will be ineffective, it is the preferred remedial method in the source areas however, in combination with the ISO-GENTM system, a "total plume" approach will be achieved. I 2.29.3 SVE Observations The vapor extraction study included the use of a Thermal Oxidizer Unit equipped with a 10-hp I PD blower. The system was used to extract vapor from the wells and to run on liquid propane. I E~C Remediation, LLC 24 · Project Number 1801BK03 . Aodl 9. 2002 The Thermal Oxidizer was connected to different configurations of vapor extraction wells. A test"~: was run for different lengths of time using different combinations of the wells as extraction (suction) and observation wells. Two (2) monitoring wells (MW-1 and MW-8) were also used as they were nearby and their screened intervals in the wells included a length of screen above the water table in the Unsaturated zone.' Based on field FID measurements, Summa Canisters were collected and submitted for chemical analyses. SVE Radius of Influence Based on the Pilot Test results, a radius of influence of greater than 70 feet and approaching 100 feet was calculated for the vapor extraction. The site stratigraphy and lack of resistance to flow, as seen during the Pilot Test, suggests this site is an ideal candidate for vapor extraction. Removal Rates On May 29, 2001 influent concentrations Were at their highest, greater than 1,000 ppm on the FID. The flow rate was 260 scfm. Using this flow rate and the Summa Canister results for that day (total of hydrocarbons plus aromatics from effluent test 12, the maximum result, = 3,220 ppmv and effluent test 14, the minimum result - 715 ppmv). Using the equation, Removal (lbs/day) = 3,220 x 10.6 x 260 cf/rain x 1 lb-mole x 86 lbs x 1,440 rnin 379.5 cf lb-mole day an on-site removal rate between approximately 275 (maximum) and 70 (minimum) lbs/day was calculated. As remediation progresses, the removal rates would be expected to decrease in responSe to lower source concentrations remaining and potential channeling of vapor flow. 2.30 Second Quarter 2001 Groundwater Monitoring On June 10, 2001, E2C personnel conducted Second Quarter 2001 groundwater monitoring · activities, which included measuring depths to groundwater, checking wells for free-product, purging wells, and collecting groundwater samples. 2.30.1. Groundwater Analytical Results Laboratory analytical results for the Second Quarter 2001 are summarized in Table 3 along with historical data. The results of these chemical analyses are summarized following: · Well MW-12 was not sampled due to the presence of approximately 30 inches of free-product; · Significant concentrations of TPHg and BTEX were reported in the water samples from wells MW-l, MW-7, MW-8, MW-11R, 13, and MW-14; · Benzene was reported at concentrations of 540 p.g/L (MW-11R) and 871 p.g/L (MW-14) (MW-14 is monitoring a lower'portion of the aquifer); · The Method Detection Limits for ben'zene were increased due to necessary dilution of these samples caused by high concentrations 'of total fuel hydrocarbon components; and · Fuel oxygenates including MTBE were reported as non-detect in all water samples submitted for analysis. I E~C Remediation, LLC 25 ~ ProieC~~N~=ber 1801BK05 ' , April 9. 200? :~ : .. 2.30.2 Conclusions Based on the data presented above, E=C made the following conclusions: ·The groundwater gradient at the Site is steep, and was calculated at 0.018'.ft/ft in. a southeasterly direction; ' ' ·All existing monitoring wells need redevelOpment to clear fines from the casings and redevelop the filter packs; ·Significant concentrations of TPHg and BTEX compounds were reported in wells MW-l, MW-7, MW-8, MW-11R, MW-13, and MW-14; · Free-product (approximately 30") was measured in well MW-12; · The downgradient monitoring wells, MW-13 and MW-14 have been impacted by significant TPHg and which indicates that the concentrations of BTEX downgradient extent of the plume remains undefined; ·The groundwater contaminant plume at the Site is long and narrow, which indicates that it is directly controlled by the steep groundwater gradient; · The lateral extent of the groundwater plume is defined in the cross-gradient directions as indicated by the non-detect concentrations in wells MW-2 (upgradient), MW-4, MW-5 (east side-gradient), and MW-6, and MW-9 (west side-gradient); and · The presence of benzene at wells MW-l, MW-7, MW-8 and MW-13 cannot be excluded'due to the presence of significant concentrations of TPHg. Also, the benzene detection limit for the water samples from these wells was 50 pg/L and these water samples dilution due to the elevated concentrations of TPHg and other BTEX compounds, therefore, benzene could be present at concentrations from 0.5 Izg/L to 50 pg/L. 2.30.3 Recommendations Based on the data presented above and the conclusions, E=C made the following recommendations: · Obtain VE/AS remedial equipment, obtain APCD permits and operate remedial system, both on- and off-site (Figure 6 depicts locations); · Install VES and AS wells off-site to mitigate and control free-product in the groundwater; ·Install additional monitoring wells (shallow and deep) in the downgradient direction; · Perform quarterly groundwater monitOring and sampling and reporting fOr the duration of remedial operations plus a minimum of four quarters beyond system shut-down; and · Amend the analytical program to test for TPHg using EPA Method 8015M, BTEX using EPA Method 8260b and prior to site closure, analyze groundwater samples for the fuel oxygenates using EPA Method 8260b to verify non-detection of these compounds. I E~C. Rernediation, LLC 26 Proiect Number 1801BK03 Aoril 9. 2002 · 2.31 Revised Remedial Action Plan I Based on the conclusions and recommendations (see Sections 2.30.2 and 2.30.3 above), E2C presented a Revised Remedial ACtion Plan (RAP) (E2C, 2001a). The Scope of Services in the revised RAP included the following: ~ Task I permitting Task II Install Off-Site Groundwater Monitoring Wells, SVE Wells and Air Sparge Wells (includes collection of soil samples) I Task Install Off-Site Soil and Groundwater Remedial System Equipment III Task IV Install On-Site Remedial System Equipment I Task V Operate and Maintain On and Off-Site Soil and Groundwater Remedial System Task VI Quarterly Groundwater Monitoring and Sampling , Task VII Reporting 'l The Revised RAP detailed specific methods and procedures for each of.the above Tasks. I 2.32 Third Quarter 2001 Groundwater Monitoring On August 6, 2001, E2C personnel conducted Third Quarter 2001 groundwater monitoring i activities, which included measuring depths to groundwater, checking wells for free-product, purging wells, and collecting groundwater samples. Based on the August 6, 2001 measurements, groundwater flow at the Site was southeast at a I steep average gradient of O.O4 ft/ft. I 2.32.1 Groundwater Analytical Results Laboratory analytical results for the Third Quarter 2001 are summarized in Table 3. The results of these chemical analyses are summarized following: I was not sampled due to the presence of approximately 5.44 feet of · Well MW-12 free-product; ~ i · Well MW-13 was not sampled due to the presence of approximately 0.20 foOt of free-product; · Significant concentrations of TPHg and BTEX were reported in the water i ~ samples from wells M ~W-1, MW~7,. MW-8, MW-11 R, and MW-14; · Benzene was reported at concentrations of 866 lzg/L (MW-11R) and 160 p,g/L (MW-14; duplicate at 152 pg/L) (MW-14 monitors a lower portion of the aquifer); I, · Toluene. (maximum of 40,070 ~g/L at well ethylbenZene of MW-8); (maximum 7,280 pg/L at well MW-8), and xyleneS (total) (maximum of 16,800 lzg/L at well MW-8) were reported in the water samples from wells MW-l, MW-7, MW-8, and I , MW-11 R; · TPHg was reported at concentrations up to 70,350 pg/L (well MW-8); and I · Fuel oxygenates including MTBE were reported as non-detect in all water ' samples submitted for analysis. i Note: Due to high Concentrations of fuel compounds in water samples from wells MW-l, MW-7, I E~C Remediation, LLC 27 Project Number 1801BK0~ A~ril 9. 2002 and 'MW-8, these samples required dilution. As such, the presence of benzene in groundwater. at concentrations between 0.5 and 50 ~g/L could not be precluded. 2..32.2 Conclusions Based on the data presented in this report, E2C made the following conclusions: " The groundwater gradient at the Site is steep, and was calculated at 0.05 ft/ft in a southeasterly direction; in the Second Quarter 2001, the groundwater gradient Was 0.018, also to the southeast; ·All existing monitoring wells need redevelopment to clear fines from the casings and redevelop the filter packs; ·Significant concentrations of TPHg and BTEX compounds were reported in wells MW-l, MW-7, MW-8, MW-11R, MW-13, and MW-14; · Free-PrOduct was measured at approximately 5.5 feet and 0.2 foot in wells MW- 12 and MW-13, respectively; this suggests further migration of the free-product plume downgradient; ·The total of hydrocarbon concentrations in groundwater at wells MW-7 and MW-8 suggest that free-product may be present in those areas; · The downgradient monitoring wells, MW-13 and MW-14 have been impacted by significant concentrations of TPHg and BTEX which indicates that the downgradient extent of the plume remains undefined; ·The groundwater contaminant plume at the Site is long and narrow, which indicates that it is directly controlled by the steep groundwater gradient; · The' lateral extent of the groundwater plume is defined in the cross-gradient directions as indicated by the non-detect concentrations in wells MW-2 (upgradient), MW-4, MW-5 (east side-gradient), and MW-6, and MW-9 (west side-gradient); and · The presence of benzene at wells MW-l, MW-7, MW-8 and. MW-13 cannot be excluded due to the presence of significant concentrations of TPHg, for the benzene detection limit for these wells was 50 ~g/L due to sample dilution. 2.32.3 Recommendations Based on the data presented above and the conclusions, E2C made the following recommendations: · Install vEs and AS wells off-site to mitigate and control free-product in the groundwater; · Obtain VE/AS remedial equipment, obtain APCD permits and operate remedial system, both on- and off-site; ·Install additional mOnitoring wells (shallow and deep) in the downgradient direction. ·Perform quarterly groundwater monitoring and sampling and reporting for the duration of remedial operations plUs a minimum of four quarters beyond system shut-down; and · Amend the analytical program to test for TPHg using EPA Method 8015M and BTEX using EPA Method 8260b with deletion of the MTBE testing requirement; prior to site closure, analyze groundwater samples for the fuel oxygenates using EPA Method 8260b to verify non-detection of these compounds. I E2C Remediation, LLC .' 28 -'~ '. Prqiect Number 180 I [~KO3 At)ril 9. 2002 2.33 Report of Findings - Additional Groundwater Characterization E2C obtained drilling permits from the Kern County Environmental Health Department (KCEHD) and an encroachment permit from the City of Bakersfield for the installation of five wells at off- site locations. Monitoring wells MW-15S, MW-15D, MW-16, MW-17S, and MW-17D were then. installed along the south side of Fig Street. Vapor extraction wells VE:4 and VE-5 were installed onsite. Soil samples were chemically analyzed for TPHg using EPA Method 8015, BTEX using EPA Method 8260b, and five fuel oxygenates, including MTBE, using EPA Method 8260b. The detection limits were 0.05 milligrams per kilogram (mg/Kg)(equivalent to parts per million) for TPHg, and 0.005 mg/Kg for BTEX compounds and fuel oxygenates. 2.33.1 Soil Analytical Results Low concentrations of fuel hydrocarbons were reported in' soil samples from each boring. TPHg was reportedly detected in twenty-two (22) of twenty-nine (29) samples analyzed. Reported TPHg concentrations in samples from the onsite VE well borings ranged from <0.05 mg/kg (non-detect) to 2.15 mg/kg. At the offsite well locations, soil .sample TPHg concentrations reportedly ranged from <0.05 mg/kg (non-detect) to 2.47 mg/kg. Toluene concentrations reportedly ranged from <0.005. mg/kg (ND) to 0.175 mg/kg onsite and <0.005 mg/kg (ND) to 0.24 mg/kg offsite. Benzene was reportedly not detected in any of the soil samples that were analyzed. MTBE was reportedly detected in two samples, one collected onsite and one offsite, · at a maximum concentration of 0.0118 mg/kg. Chemical concentrations were generally elevated in samples collected near the capillary fringe, however, elevated TPHg concentrations were reported at depths of. 50 feet and 75 feet bgs in Boring MW-17S with intervening lower concentration samples suggesting some interfingering of the groundwater plume among interbedded fine and coarse grained sediments. 2.33.2 Well Installations Shallow Groundwater Monitoring Wells MW-15S, MW-16, and MW-17S Existing monitoring data from the Site indicated first groundwater occured approximately 45 to 50 feet bgs with wide elevation fluctuations due largely to site specific lithology. As such, monitoring wells MW-15S, MW-16, and MW-17S were each advanced to depths of 75 to 80 feet bgs and the wells were Constructed in attempt to screen this water-bearing zone at each location. The boring for well MW-15S was drilled to 75 feet bgs and the well was constructed with 30 feet of well screen. The bOring for well MW-16 Was advanced to 80 feet bgs and was constructed with a 20-foot screened interval to screen the first encountered groundwater zone a clay layer approximately 5 feet thick. The first indications of saturated below hydrocarbon contamination were observed below the clay layer therefore well MW-16 was constructed to target this zone. The sand pack for well MW-16 extends from the bottom of the a depth bgs (within naturally occurring sand) and if groundwater were present well to of 53 feet above the clay layer it would be intercepted by the sand pack providing a conduit to the well. The boring for well MW-17S was advanced to 80 feet bgs and constructed with 30 feet of well screen. These three (3) monitoring wells were constructed 2-inch ID Schedule 40 PVC using casing with 0.010 slotted casing at the bottom followed by blank caSing at the top. Graded sand (#2/12) was emplaced to a point approximately two to Six feet above the slotted interval, followed by. a four- to five-foot bentonite seal and neat bentonite-cement to grout approximately 1 foot bgs. A steel traffic box was set in concrete slightly above grade over the wellhead for protection. Following construction, the wells were developed using surge blocking and bailing . and overpumping. Well MW-16, initially containing a 4-foot column of did not water, recover E2C Remediation, LLC 29 ~, Prelect Number 1801BK03 April 9. 2002 ' , " ' ' ' after development. I . Wellhead elevations and locations for the new wells were surveyed by Alta Engineering/Hughes Surveying (Hughes) (State .of California Licensed Land Surveyor No. 3779) for horizontal and vertical control-based on 'a Bench Mark (Elevation 396.41 feet above mean sea' level, 'or +msl) in the abutment of the bridge that spans the Kern Island Canal - Central Branch proximate to the Site. Hughes opened each well and surveyed the top of the PVC casing at the north edge of the casing for vertical control. Hughes marked the surveyed spot with a black marker pen. Horizontal control was established to the center of the steel traffic box that protects each .well.. wells were surveyed to meet State of California Assembly Bill 2886 (AB 2886) The requirements. The surveyor's plot is provided in Appendix C. Deep Groundwater Monitoring Wells MW-15D and MW-17D Wells MW-15D and MW-lTD were installed to.. monitor the deeper portion of the first water- bearing zone. The wells were installed along the south side of. Fig Street approximately 400 feet southeast of the Site (see Figure 2 for locations). The boring for MW-15D was straight drilled tO 82 feet bgs at which point soil sampling commenced until a depth, of 87 feet. The well was then constructed using 2-inch-diameter Schedule 40 PVC casing screened from approximately 77 to 87 feet bgs with 0.010-inch wide slotted casing at the bottom followed by blank casing at the top. Graded sand (#2/12) was emplaced to a point two feet (75 feet bgs) above the slotted interval. As this well is located very close to well MW-15S, bentonite was placed from 75 to 52 feet bgs (for that portion below the water table, coated bentonite pellets were used due to the delay in their hydration). The boring for MW-lTD was straight drilled to 85 feet bgs at which point soil sampling commenced until a depth of 92 feet. The well was constructed using materials similar to well MW-15D with well casing from 82 to 92 feet bgs, sand pack from 74 to 92 feet bgs, bentonite from 54 to 74 feet bgs. Neat bentonite-cement grout was placed to the near surface (approximately one foot bgs) to complete the seal for both wells. A steel traffic box was set in concrete slightly above grade over the wellhead for protecti°n. Following constrUction, development of the wells was attempted, however, both wells were found to be dry. Installation of Wells VE-4 and VE-5 These wells were constructed in such a manner that the slotted interval will remain above the water table throughout the year. The soil borings were advanced to 37 feet bgs at which point the wells were constructed. Twenty-five feet (12 to'37 feet bgs) of slotted (0.020") Schedule 40 PVC was placed at the bottom followed by blank PVC to the surface. Graded sand (#3) was placed, to a point two to' three feet above the top of the slotted section folloWed by approximately eight by neat-cement grout to the near surface. A traffic- feet of hydrated bentonite followed rated steel box set in concrete at the surface completed the installations. 2.33.3 Subsurface Stratigraphy and Hydrogeology In general, the subsurface at the Site is characterized by fine to medium grained poorly graded sand to the maximum dePth explored onsite of 38 feet during this investigation. At a depth of approximately 55 feet to 60 feet, interbedded sands, silty clays,-sandy silts, and fine-grained silty sands occur to 92 feet bgs, the maximum depth explored offsite. Along Fig Street at dePths below the top of the capillary fringe (approximately 55 to 60 feet bgs), the stratigraphy is characterized by interbedded fine and coarse grained sediments. At well MW-16 a layer of clay exists from approximately 61 feet to 67 feet bgs. At well MW-15S located west of MW-16, the depth to water was measured at 70.52 feet BTOC while at Well MW-17S E~C Remediation, LLC 30 ..... · ~'.-~ :.~ .... . ~ ' .' ' ~ '. i i~:..!- Pro_iect Number 1801BK03 A~ril 9. 2002 located east of MW-16 the depth to water was 57.14 feet, a difference of approximately 13 feet though the wells'were screened at similar elevations. The lateral extent of the clay layer is .unknown however, as groundwater approaChes MW-16.from the north the clay layer may serve as a flow barrier causing flow to diverge around it. Where there is a sufficient fine grained perching layer (aquiclude), as is apparently the case east of well MW-16 where groundwater is' prevalent at well MW-17S, flow is maintained at a gradient similar to upgradient well MW-13. However, between wells MW-16 and MW-15S where 'the aquiclude is less continuous a sufficient perching layer exists at a deeper.level and can only maintain a water level approximately 13 feet lower than at well MW-17S. The presence of groUndwater along Fig Street and in the deeper portions of the water-bearing zone (MW-14)appears to be lithilogically controlled by alternating fine and coarse grained layers groundwater interfingering among these layers as it seeks more permeable strata. with The existence of a lithologic control on groundwater flow is also supported by the observed higher groundwater elevation at well MW-13, screened across the water table, compared to across a zone approximately .11 feet lower than well adjacent well MW-14 which is screened MW-13. 2.33.4 Conclusions Based on the findings of the additional groundwater characterization, E2C made the following conclusions: · The lateral distributi°n of hydrocarbons in soil extends from the Site south to Fig Street though attenuates significantly at Fig Street relative to onsite concentrations and appeared to be a result of groundwater transport; · The distribution of groundwater offsite in the Fig Street area is lithologically controlled by interbedded fine grained sediments that' serve as natural horizontal and vertical flow barriers and coarse grained sediments that provide flow conduits, and due to the discontinuous lenticular nature of these sediments groundwater was not present within the screened intervals of all new wells installed; and · Groundwater appeared to be perched at various levels within interbedded fine and coarse grained sediments in the vicinity of Fig Street which probably serve to attenuate groundwater contaminant concentrations through natural processes such as retardation and dispersion. 2.33.5 Recommendations Based on the data presented above and the conClusions, E2C made the following recommendations: ·No further investigation of offsite soil and groundwater-conditions as the limits of the contaminant plume had been defined; and ° Install and operate remediation equipment described in the August 15, 2001 RAP to cleanup and control the migration of hydrocarbons in soil and groundwater both onsite and offsite. 2.34 Fourth Quarter 2001 Groundwater Monitoring On December 6 and 7, 2001, E2C personnel conducted Fourth Quarter 2001 groundwater monitoring' activities. Groundwater flow was determined to be southeast at a steep average E~C Remediation, LLC 3i Proiect Number .1801B/~0~ Aoril 9. 200P gradient of 0.036 ft/ft from the Site to Fig Street (onsite gradient of 0.017 ft/ft and offsite gradient of 0.052 ft/ft). Split groundwater samples were collected by Mr. John Whiting - RWQCB from onsite wells .MW.l, MW~3, and MW-8 at the time of'the'quarterly sampling event for.the purpose of establishing baseline concentrations in key on-site monitoring wells. Agriculture & Priority Pollutants Laboratories, Inc. of Fresno, California analyzed the split groundwater samples. 2.34.1 Groundwater Analytical Results Laboratory analytical results for the Fourth Quarter 2001 are summarized in Table 3. The results of these chemical analyses are summarized following:. · Well MW-12 was not sampled due to the Presence of approximately 0.13 feet of free-product; · Significant concentrations of TPHg and BTEX were reported in the water samples from wells MW-l, MW;4 through MW-10, MW-11 R, MW-13 and MW-14; ·Benzene was reported'at concentrations of 115 tzg/L (MW-13), 32.9 Izg/L (MW- 9), and 65 tzg/L (MW-14) (MW-14 monitors a lower portion of the aquifer); · Toluene (maximum of 31,075 ~g/L at well MW-8), ethylbenzene (maximum of 5,160 tzg/L at well MW-8), and total xylenes (maximum of 18,650 F.g/L at well MW-8) wer~e reported in the water samples from wells MW-4 through MW-10, and MW-13; ·TPHg was reported at concentrations up to 178,900 j~g/L (well MW-13) (see Figure 5 for TPHg isoconcentration plot for distribution); and ·Fuel oxygenates including MTBE were reported as non-detect in all water samples submitted for analysis. Note: Due to high concentrations of fuel compounds in water samples from wells MW-l, MW-7, MW-8, MW-11R, MW-13 these samples requ!red a 20X dilution. As such, the presence of benzene in groundwater at concentrations between' 0.5 and 10 ~zg/L could not be precluded. 2.34.2 Conclusions ' Based on the data presented in this report, E2C made the following conclusions: · The groundwater gradient from the Site to Fig Street was calculated at 0.036 ft/ft with flow in a southeasterly direction; in the Third Quarter 2001, the groundwater gradient was 0.05 ft/ft, with flow also to the southeast; · Significant concentrations of TPHg and BTEX.compounds were reported in groundwater samples from wells MW-l, MW-4 through MW-'10, MW-11R, MW- 13, and MW-14; · Free-product with a layer thickness of 0.13 foot was measured'in well MW-12; this is a significant decrease from the thickness of 5,44 feet measured in the Third Quarter 2001 in well MW-12; ·The total of hydrocarbon concentrations in groundwater at wells MW-8 and MW- 13 suggest that free-product ..may be present in those areas; ·Trace concentrations of total hydrocarbbns as gasoline were reportedly detected in groundwater samples from the downgradient monitoring wells, MW-15S and E~C Remediation, LLC 32 Proiect Number 1801BK03 Aoril 9. 20np MW-17S, indicating that the downgradient limits of the ·plume had been delineated; · The groundwater contaminant plume at the Site was long and narrow, which indicates that it was primarily controlled by the steep groundwater gradient, however, increasing concentrations in samples from cross-gradient wells MW-2, MW-4, MW-5, and MW-9 indicated some lateral dispersion may have also been occurring; and · The presence of benzene at wells MW-l, MW-7, MW-8, MW-11R, and MW-13 could not be excluded due to the presence of significant concentrations of TPHg, because the benzene detection limit for these wells was 10 pg/L due to sample dilution. 2.34.3 ReCommendations Based on the data presented above and the conc!usions,. E2C made the .following recommendations: · Install VES and AS wells off-site to mitigate and control free-product in the groundwater; · Obtain VE/AS remedial equipment, obtain APCD permits and operate remedial system, both on- and off-site; · Perform quarterly groundWater monitoring and sampling and reporting for the' duration of remedial operations plus a minimum of four quarters beyond system shut-down; and · Amend the analytical program to test for TPHg using EPA Method 8015M and using Method 8260b with deletion of the MTBE testing requirement; BTEX EPA prior to site closure, analyze groundwater samples for the fuel oxygenates using EPA Method 8260b to verify non-detection of these compounds. 2.35 RWQCB Response - 1/24/02 On January 24, 2002, .the RWQCB issued a letter in review of the additional groundwater characterization performed in November and December 2001. The letter requested installation of an additional downgradient monitoring well with downhole geophysical logging to identify deeper water-bearing zones below perched groundwater. The letter approved installation of the on-site and off-site remediation systems as proposed to remediate and control the migration of fuel hydrocarbon-impacted groundwater in the area and also approved suspension of MTBE testing from the analytical program until verification monitOring for site closure. E2C prepared a cost pre-approval for the State UST Fund 'that includes preparation of a 'Workplan to install the additional monitoring well. The Workplan will be prepared upon pre- of costs the UST approval by Fund. 3.0 FIRST QUARTER 2002 GROUNDWATER MONITORING On February 18 and 19, 2002, E2C personnel conducted First Quarter 2002 groundwater monitoring activities, which included measuring depths to groundwater, checking Wells for free- product, purging wells, and collecting groundwater samples. Project Number 1801BK0~ April 9. 2002 3.1 Groundwater Elevations Prior to purging and sampling, the depth to groundwater was measured at all wells using a Solinst water level meter. Each monitoring well was measured below the top of casing (BTOC) at the North side of .the casing to the nearest 0.01-foot (see Table 1 for summary of depths; 'Table 2 contains a summary of historical 'measurements). Based on the previous data regarding the Site, measurements were taken at the wells in order of least impacted location to most impacted location.' In addition, each well was checked for free-product using a Yellowjacket oil-water interface probe. The interface prObe and Solinst water level indicator wereeach well. washed in an Alconox solution and rinsed with clean water prior to each use and between Groundwater elevations were then calculated by subtracting the measured depths from the surveyed elevation. Groundwater elevations for this sampling round are summarized in Table 1 and with previously collected elevation data for the Site in Table 2. Based on the February 18, 2002 measurements, groundwater flow at the Site is southeast at'a steep average gradient of 0.041 ft/ft from the Site to Fig Street (onsite gradient of 0.015 ft/ft and offsite gradient of 0.052 ft/ft). 3.2 Monitoring Well Purging and Sampling All monitoring wells were purged in order to obtain representative groundwater samples. A minimum of three well casing volumes of groundwater were removed from each well prior to sampling utilizing a battery-powered submersible pump. A casing volume is calculated by multiplying the height of the freestanding water column in the well by the cross-sectional area of the well casing. During Purging, groundwater parameters of temperature, pH and conductivity were measured as water was pumped from the wells to verify sufficient purging and stable physical parameter measurements on field instruments (see Appendix A for purge data sheets). The pump was decontaminated in a solution of Alconox and water and rinsed with clean'water before each use. After purging, the wells were sampled using new disposable bailers. A groundwater sample from each well was decanted into four 40-mi volatile organic analysis (VOA) vials. Care was taken to prevent headspace or bubbles in the vials, which were sealed with Teflon-lined lids. Samples were labeled and placed in an iced cooler maintained at 4 degrees Centigrade, accompanied with a Chain-of-Custody document for transport to the analytical laboratory. 3.3 Groundwater Analytical Results Halcyon Laboratories, Inc. (Certification #1920) of Bakersfield, California analyzed the' groundwater samples for TPHg using EPA Method 8015M and BTEX using EPA Method 8260b. Appendix B presents the analytical laboratory report. Laboratory analytical results for the First Quarter 2002 are summarized in Table 1 and along with historical data in Table 3. The results of these chemi6al analyses are summarized following: · Wells MW-l, MW-7, MW-12, and MW-13 were not samPled due to the presence of approximately 0.25 foot, 0.12 foot, 0.82 foot, and 0.84 foot of free-product, respectively; E2C Remediation, LLC 34 ' ProiebtN~mber 1801BK03 , A~rilg. 200? - · Significant concentrations of TPHg and BTEX Were reported in the Water ~ . samples from wells MW-2 through MW-6, MW-8 through MW-10, MW-11R, and .r~ MW'14, with the exception of benzene at MW-6 and MW'lO which was reported I! as non-detect; · Benzene was reported at' concentrations ranging from 0.6 pg/L (Mw-8) to 360 ~g/L (MW-5), and was reported at 2 lzg/L at MW-14 (MW-14 monitors a lower portion of the aquifer) (see Figure 4 for benzene isoconcentration plot for distribution); and I · At least two of the three compounds of Toluene, Ethylbenzene, and Xylenes were reported in all water samples, except from MW-17S, with Toluene at a maximum of. 1,560 ~g/L at well MW-11R, ethylbenzene at a maximum .of 1,410 I I~g/L at well MW-8, and total xylenes at a maximum of 3,270 pg/L at well MW-8; and · TPHg was reported in all samples, except from MW-17S, at concentrations ranging from 170 ~g/L (MW-2) to 27,500 ~g/L (MW-8) (see Figure 5 for 'TPHg isoconcentration plot for distribution); 3.4 Conclusions Based on the data Presented in this report, E2C makes the following conclusions: I and along Brundage Lane decreased · Groundwater elevations onsite .approximately 3 feet relative to the Fourth Quarter 2001 and decreased 4 to 10 feet at offsite wells south of wells MW-11R and MW-12, except at deep well MW- 14 where the decrease was 0.8 foot; · The groundwater gradient from the Site to Fig Street was calculated at 0.041 ft/ft i . with flow in a southeasterly direction; in the Fourth Quarte~' 2001, the groundwater gradient was 0.036 ft/ft, with flow also to the southeast; · Wells MW-15S, MW-15D, MW-16, and MW-17D were found to be dry, i suggesting that groundwater flow along Fig Street is laterally discontinuous; · The free product thickness at well MW-12 increased from 0.13 foot in the Fourth Quarter 2001 to 0.82 foot in the First Quarter 2002, an increase of 0.69 foot. -i Free product was also found in wells MW-l, MW-7, and MW-13 in the First Ii Quarter 2002, though was not found in these wells in the Fourth Quarter 2001; · Significant concentrations of TPHg and BTEX compounds were reported in groundwater samples from wells MW-l, MW-4 through MW-10, MW-11R, MW- 13, and MW-14; · The total of hydrocarbon concentrations in groundwater at wells MW-8 and MW- I 11R suggests that free-product maybe present in those areas; · Total hydrocarbons as gasoline were reportedly non-detect in the groundwater sample from downgradient monitoring well MW-17S, thOugh was reported at a I concentration of 135 ~tg/L in the Fourth Quarter 2001; and · The groundwater contaminant plume at the Site is long and narrow, which Ii indicates that it is primarily controlled by the steep groundwater gradient, II however, slightly increasing BTEX and TPHg concentrations in the sample from upgradient well MW-2, and increasing Benzene and TPHg at MW-4, MW-5, and i -. MW-9, indicate some lateral dispersion may also be occurring. i E2C Remediation, LLC 35 Pro. iect Number 1801BK 05 , - 3.5 Recommendations Based on the data presented above and the conclusions, E2C makes the following recommendations: · Install VES and AS wells off-site to mitigate and control free-product in the groundwater; · Obtain VE/AS remedial equipment, obtain APCD permits and operate remedial system, both on- and off-sitei and · quarterly groundwater'monitoring and sampling and reporting for the Perform duration of remedial operatiOns plus a minimum of four quarters beyond system shut-down. Note: The RWQCB approved installation and operation of both the onsite and offsite 'remediation systems by letter dated January 28, 2002. The letter also approved suspending analysis of groundwater samples for MTBE until verification monitoring is performed prior to site closure. I ! I I I i E~C Remediation, LLC 36 4,0 LIMITATIONS AND REPORT CERTIFICA T/ON E2C has prepared this Report in accordance with generally accepted standards of care eXisting in California at this time. It should be recognized that definition and evaluation .of geologic. .conditions is a difficult' and inexact-science. JUdgments'leading to. conclUsions and recommendations are generally made with limited knowledge of surface conditions present. No warranty expressed or implied is made. This report has been prepared under the professional sUpervision of the registered professional whose seal and signature appear herein. The conclusions of this report are based solely on the Scope of Services outlined and the sources .of information referenced in this report. Any additional information that becomes available Concerning the Site should be submitted to E2C so may reviewed and modified, necessary. This report was prepared for that our conclusions be the sole use of Mr. & Mrs. Ki Chu Yi and/or agent(s). Reviewed By: /~ Prepared By: Mark W. Clardy~ Reg. Expires O5 X,,,, Principal Hydrogeologist Senior Geologist I E~C Remediation, LLC c' 37 Prelect Number '1801BKO~ Aoril 9. 2002 (AEC, 2000a) Advanced Environmental Concepts, Inc., February 2000, Continuing Soil and Groundwater Assessment Report at 'Mr. Fast Gas & Liquors, 600 - 'Bmndage Lane, County of'Kern, Bakersfield, California ' {AEC, 2000b) Advanced Environmental Concepts, Inc., July 2000, Continuing Soil and Groundwater A~sessment Report at Mr. Fast Gas & Liquors, 600 ' Brundage Lane, County of Kern, Bakersfield, California (E2C, 2001) E2C, Inc., July 26, 2001, Request for Approval of Off-Site Remediation & Request for Approval to Install Additional Groundwater Monitoring WeIls, Underground Storage Tank Release, Mr. Fast Service Station, 6OO Brundage Lane, Bakersfield, Cafifomia (E~C, 2001a) E~C Remediation, LLC, August 15, 2001, Report of Findings for'Additional Site Characterization & SVE/AS Pilot Testing, Second Quarter Groundwater Monitoring Report, Revised Remedial Action Plan (includes Workplan for Additional Groundwater Characterization), Mr. Fast Service Station, 600 Brundage Lane, Bakersfield, Cafifomia (E2c, 2OOlb) E2C Remediation, LLC, October 15, 2001, Third Quarter 2001 Groundwater Monitoring Report, Mr. Fast Service Station, 600 Brundage Lane, Bakersfield, California · (E2C, 2002) E2C Remediation, LLC, January 11, 2002, Fourth Quarter 2001 Groundwater Monitoring Report and Additional Groundwater Characterization Report of Findings, Mr. Fast Service Station, 600 . Brundage Lane, Bakersfield, California (Grisanti, 1992) Grisanti & Associates, Inc., February 1992, Transaction Environmental Site Assessment, Mr. Fast I/6 Liquor and Deli Facility, 600 Brundage Lane, County of Kern, Bakersfield, California (RWQCB, 2000a) California Regional Water Quality Control Board - Centra~ Valley Begion, 17 November 2000, Underground Storage Tank Release, Mr. Fast Service Station, 600 Brundage Lane, Bakersfield, California (RWQCB Case No. 5T15000619) (RWQCB, 2000b) California Regional Water Quality Control Board - Central Valley Region, 29 November 2000, Underground Storage Tank Release, Mr. Fast Servicd Station, 600 Brundage Lane, Bakersfield, California (RWQCB Case No. 5T15000619) (RWQCB, 2001) California Regional Water Quality Control Board - Central Valley Region, 16 January 2001, Underground Storage Tank Release, Mr. Fast Service Station, 600 Brundage Lane, Bakersfield, California (RWQCB Case No. 5T15000619) E~C Remediation, LLC 38..: Number 1801BK03 APril 9. 2002 (RWQCB, 2001c) California Regional Water Quality Control'BOard - Central Valley Region, 26 February 2001, Underground Storage Tank Re/ease, Mr. Fast Service Station, 600 Brundage Lane, Bakersfield, California (RWQCB Case '5T15000619) (RWQCB, 2001d) California Regional Water Quality Control Board - Central Valley Region, 20 April 2001, Underground Storage Tank Release, Mr. Fast Service Station, 600 Brundage Lane, Bakersfield, California (RWQCB Case No. 5T15000619) (RWQCB, 2001e) California Regional Water Quality Control Board - Central Valley Region, 21 September 2001, Underground Storage Tank Release, Mr. Fast Service Station, 600 Brundage Lane, Bakersfield, California (RWQCB Case No. 5T15000619), Review of "Request for Approval of Off-Site Remediation and Request for Approval to Install Additional Groundwater Monitoring Wells" (RWQCB, 2002) California Regional Water Quality Control Board - Central Valley Region, 24 January 2002, Underground Storage Tank Re/ease, Mr. Fast Service station, 600 Brundage Lane, Bakersfield,'Ca/ifornia (RWQCB Case No. 5T15000619) (WEECO, 1993) Western Environmental Engineers Company, July 1993, Site Assessment Report, Mr. Fast Service Station, 600 Brundage Lane, Bakersfield, California I I I E~C Remediation, LLC 39 FIGURES Figure 1 Site Location Map Figure 2 Site Plan Figure 3 First Quarter.2002 Groundwater Gradient Plot Figure 4 First Quarter 2002 Benzene Isoconcentration Plot Figure 5 'First Quarter 2002 TPHg Isoconcentration Plot , ! I E~C Remediation, LLC . Figures .. CALIFORNIA 5IT£ -- BRUNDAGE BRUNDAGE CASA LOM.t VALLEY PLAZA ~ ~,[ALL ,YALI. E GRAND ~ -~ ;~ P~Uc~. ~ ~ COLF COU~g~ Watts BAKERSFIELD EAST WHITE LAN a.'.i._~ \~ E2CRemediation, LLC MR. FAST SERVICE STATION. FIGURE 600 BRUNDAGE LANE 5300 Woodmere Dr, j Suite 105 Bakersfield, California 93313 · BAKERSFIELD, CALIFORNIA 1 Telephone: (661) 831-6906 , SITE LOCATION MAP Facsimile: (66,1) 831-6234 -" :' / LEGEND ~,. ,~ Monitoring Well Location Monitoring Location Shallow Well Deep Monitoring Well Location I Abandoned Well Location APN: 011-031-05 ! '~' Vapor Extraction Well Location "T" Street [] Air Sparge Well Location I-. i BM Benchmark '" MW-2 VE-2 ~/' cu...t Pumps VE-1 ~' AS-1 i./'~ , I ^~N: O11-032-16 MW'6 MW-3 '1 Brundage Lane MW-5~ ~ ~ ~ MW'SvE 3 -~- J +396.41 MW-6 BRU.DAGE t ..~_M -9- W-7 MW-10 .i ~ ~ . I , 011.048., . 011-048-08 MW-12 MW-11 ~ MW-13 011 z048-15 011-041-01 011-041-02 i 011-041-11 , 011-048-10 011-048-09 011-048-08 011-041-12 0 I 80 SCALE: 1 inch = 80 feet E2C Remediation, LLC MR. FAST SERVICE STATION 600 BRUNDAGE LANE FIGURE 5300 Woodmere Dr., Suite 105 BAKERSFIELD, CA. Bakersfield, California 93313 ;,, Telephone: (661) 831-6906 Facsimile: (661)831-6234 SITE PLAN 0 J 80 APN: 011-031-05 ~ SCALE: 1 inch = 80 feet ' 'm' Street BRUNDAGE LANE ~ LEGEND / - + Monitoring Well Location + Shallow Monitoring Well Location o~.~2 ~ Deep Monitoring Well Location MW-15s MW-15d MW-16 ~~~s MW-17d ~ Abandoned Well Location FIG STREET ~~+~ +~/ ~ Vapor Extraction Well Location ~ Benchma~ FREEWAY RIGHT-OF-WAY ~ ~ Groundwater Elevation Contour ~ Groundwa[er Elevation (~ MSL) ~C ~4i~io~, [[C UR. FAST SERVICE STATION FIGURE 600 Brundage Lane 5300 Woodmere Dr., Suite 105 Bakersfield,'California Bakersfield, California 93313 . Telephone: (661) 831-6906 FIRST QUARTER 2002 Facsimile: (661) 831-6234 GROUNDWATER GRADIENT PLOT 0 [ 80 APN: 011-031-05 SCALE: 1 inch = 80 feet '~' Street VE-2 I 600.rundageLene I APN:011-032-16 Current Gas ~' ,~E-1 ~ ~T~4, { Brundage Lane . +39~B .M41Elre~ti~N.6 U~ 6 -- 92ff West; 22.ff South A~roximate Limits of E LANE \Free.PrOduct MW-1 0 0~-04~-02 3 LEGEND Shallow Monitoring Well Location MW-16 MW-17s MW-17d ~1+ Deep M°nit°ring well L°cati°n I~ FiG STREET rb'~w-~.-s ;w~ + r-~ -~-~1~.- I-b~ II / ' Abandoned Well Location II/~' Vapor Extraction Well Location ~ FREEWAY II/'~Benchmark I{ RIGHT'OF-WAy E2CRemediation, LLC MR. FAST SERVICE STATION600 Brundage Lane 5300 Woodmere Dr., Suite 105 Bakersfield, California Bakersfield, California 93313 Telephone: (661) 831-6906 FIRST' QUARTER 2002 4 · Facsimile: (661)831-6234 BENZENE ISOCONCENTRATION PLOT 0 J 80 011-031-05 SCALE: 1 inch = 80 feet APN,~, Street .~E-2 '1~° ""'""'°" '"' I APN: 011-032.16 ~ ¢-1 ~ Brundage Lane VE-4 +39~.~ ~J~eov~mti~v-s MW-6 92ft West; 22ft South E LANE Approximate Limits of ~ Free-Product MW-10 011-041-01 011-041-02 LEGEND Monitoring Well Location Shallow Monitoring Well Location MW-15s . ND MW-17s MW-17d Deep Monitoring Well Location FIG STREET r'~ ~ -~ ~ + ~ + + ~ Abandoned Well Location Vapor EXtraction Well Location ~ Benchmark FREEWAY RIGHT-OF-WAY TPHg Concentration in Pg/L E2C Remedi~ztion, LLC MR. FAST SERVICE STATION FIGURE 5300 Woodmere Dr., Suite 105 600 Brundage Lane Bakersfield, California 93313 Bakersfield, California Telephone: (661) 831-6906 FIRST QUARTER 2002 5 Facsimile: (661) 831-6234 TPHg ISOCONCENTRATION PLOT L- TABLES Table I First Quarter 2002 Groundwater Monitoring Data Table 2 Summary of Historical Groundwater Elevation Data Table 3 Summary of Historical Groundwater Analytical Results E2C Remediation, LLC . Tables Project Number 1801BK04 Apdl 9, 2002 TABLE 1 FIRST QUARTER 2002 GROUNDWATER MONITORING RESULTS Mr. Fast Service Station 600 Brundage Lane .:~ Bakersfield, California February 18 - 19, 2001 ,oc I / / I / / WELLID DATE WATER F-P ELEV. ' ELEV. B T E X TPHg TPHd TBA MTBE DIPE ETBE TAME (feet BTOC) (feet) (feet MSL) (feet MSL) Fg/L MW-1 2/18/02 45.80 0.25 394.03 348.43 ........................... NSFP MW-3 2/18/02 46.32 ~9'4~6~ '~48.3~- ..... ~-9- ..... ~ " -N~ .......... ~ ........... -1-, 1~ ~ ......... ~ ....... ~ ........ ~ ....... ~-~ ........ ~'- M__w~.8 .... 2/18/02 46.22 .... ~39,~.'{)-5' '~3,~7-.73- ........ ~:~ ..... ~-/i0b ' :11'4:1~ ....... ~i~-~ ..... ~,,~)~- .... -N-~ ......... ~- ....... ~-b ....... ~1~'" '1~6 ~--'- MW-9 2/18/02 46.94 .... 3~)~-(~ ~' '~:~'~ ......... -7.~ i0 .... -' fid ........... ~- .......... 3~6 ...... ~-A ....... ~ .... -~- ..... ~-b ~6 ....... ~-- MW-lO 2/18/02 47.12 392.91 345.79 ND 14 ] : 017- ....... ~ ....... 2-'i,~- ...... ~ ......... ~-5 ........ ~ ...... ~D' ' ~1~) ....... ~-D~- ~w.~i-1- ......... -We~i-i~k-~-~-~i ~- §re:vice .-i~eplac-e~j-~y M~i~ ~-R ................... Well taken out of service- Replaced by MW-11R rvlW-12 2/19/02 51.65' 0.82 392.06 341.07 NSFP f ":*~" MW-13 2/19/02 57.43 0.84 392.00 335.24 NSFP ' ..... : ..... ~W-14 2/18/02 ...69.30 391.85 322.35 2 ] -a.~ 1 ~7 .... ~-- ~0 ..... ~ ..... ~b- ---~-- ~- ....... i;~.N-6--L___.o_. VlW-15S ~18/6~ 'DRY ~9~:;-~ ............................ I ................................. 1 ....... I ........ I :.-.~,.. ......................... ' ....... NS :.: .;, .. MW-15D 2/18102 DRY 39017-~ '-:--iL..- .................. ~-~ .................................. ............ VIW-17S 2/18/02 61.50 390.74 329.24 ND I ND I .N_-D'iiii]. a~ '1 'ND-'-~ .... N~ .... ~-b .......... ~-d:---' NO 'M_W_~17D 2/18/0~ DRY 390.~1 - '.'L[;/'--: ............... NS ..... Notes: Duplicate of MW-11R labeled as MW-18 on Chain-of-Custody ND = Below Practical Quantitation Limits: Results in micrograms per liter (,ug/!_) = parts per billion (ppb) Benzene/Toluene-0.5 #glL, Ethyl Benzene/Xylenes-0.5 pg/L, TPHg-50/~g/L, and MTBE-0.5 pgA. " B = Benzene NS = Not Sampled; well dry .:. BTOC = Below Top of Casing NSFP = Not Sampled, free-product present '* E = Ethylbenzene TAME = Tertiary Amyl Methyl Ether · ' · El'BE = Ethyl Tertiary Butyl Ether TBA = Tertiary Butyl Alcohol F-P = Free-Product Thickness TBD = To Be Determined GW = Groundwater TOC = Top of Casing . '?. MTBE = Methyl Tertiary Butyl Ether TPHd = Total Petroleum Hydrocarbons as diesel NA = Not analyzed TPHg = Total Petroleum Hydrocarbons as gasoline X = Total Xylenes GW Elevation corrected for Free Product usin~ formula: GW Elev = Reference Elev -[Depth to Water - (Product Thickness)(0.81] . E2C Remediationo LLC T1-1 Project Number 180 I BKO~. Apdl 9, 2002 m · TABLE 2 !, SUMMARY OF HISTORICAL GROUNDWATER ELEVATION DATA . '" Mr, Fast Service Station · 600 Brundage Lane m Bakersfieldr California TOC ELEVATION TOTAL DEPTH DEPTHTO GROUNDWATER WELL ID DATE GROUNDWATER ELEVATION m (feet MSL) (feet BTOC) (feet BTOC) (feet MSL) 7/20/95 N/A N/A N/A N/A 4/5/96 N/A N/A N/A N/A 3/27/97 N/A N/A N/A N/A m 10/20/98 N/A N/A ' N/A N/A 1/11/99 N/A N/A N/A N/A 5/1 ............................ 2/99 N/A '~A- ............. ~,6.'~ ~ ....................... ~i)A .......... 8/20/99 N/A N/A 40.96 N/A . MW-1 3i~/~' N)~, ~/,~ ~ ' 46.~3-~ ..... N-/~, ....... 7'/3/00 N/A N/~, ' N/,~ .... N-/~, ...... 1/3/01 394.03 51.73 43.28 350.75. m .6/4/.0_1- ....... _3_9 _4..0_3_ ........ 5._1_,_80__ ............. 42_:_1~ .................... 35.1_.8_~ 8/6/01 394.03 51.80 40.32 353.71 ' ~1~1~ ........ -3~4:-0§- .................................... 51.80 ' ...................................... 42.32 351.71 2/18/02 394.03 52.12 45.80 348.25 I 4/_5/_9_6_ .................................. NL6 .......................... 3/27/97 N/A 10/20/98 ~ 73-6' ........................... m 1/1 'i79~ ............ ~-'-i~ .... 5/12/99 42.76 8/2(~2{~ .......... 38.61 .................... 10/6/99 N/A I m MW-2 12/7/99 41.47 . . 3_/3_0/_0_0 ..................................... ~ 5_._1_9_ ......................... 7/3/00 42,01 1/3/01 395.01 54,29 43,38 351,63 m ~6T,~o~ ..... , ..... §~§;8-1- ....... 84.29 ..... i .... 4-1~§2- - .. ~ ....... ~-5-3~,i-~ ..... 8~6/0~ ...... !" '§~:5~' ............. ~-472~9 .... ~-o-.i-2- ............... §'$74-.~ ........ 12/6/01 395.01 54,29 42,42 352.59 2/18~02 395.01 54,24 45.49 349.52 I. .~4/_5/9~6_ ...................................... NJ_A.. .................................... 3/27/97 N/A 10/20/98 45,46 11! ! 197 .......................... 4_5_,4_3_ ......................................... 5/12/99 44.21 8~20~99 39.92 10/6/99 N/A m MW-3 12/7199 42.45 3/~0/~0 ...................... 46:;~, .... .................... 7/3/00 43,05 113101 394,64 54,80 44.21 350,43 m 6/4/01 394,64 54,8__4 ....... 42_:~2_ ............... 8/6/01 394.64 54.84 41.16 353,48 12/6101 394.64~ 54.89 4~.-3-0 ........... -3-~.3~ ...... 2/i'~'/~ §9-4~16~ ' ' ~,.~-" --i ...... 4-6; 3~ .................... '~§~3~ ....... ! E2C Remediation, LLC . T2-1 ~ Project Number 1801BK04 ' . April 9, 2002 I . · TABLE 2 · SUMMARY OF HISTORICAL GROUNDWATER ELEVATION DATA 'Mr. Fast Service Station 600 Brundage Lane I Bakersfieldr California WELL'ID DATE TOC ELEVATION TOTAL DEPTH GROUNDWATERDEPTH TO . GROUNDWATERELEVATiON .aBa (feet MSL) (feet BTOC) (feet BTOC) (feet MSL) 4/5/96 N/A 3/2'7/9~ .............. N-)~,' 10/20/98 46.17 I 1il 1/99 ' . ......... .4_5_:~_9 _ 5_(? ~_9_9_ ................................................... _4_5_: 1_3~ 8/20/99 40.74 .................................................... 10/6/99 : ..... I~ ................................. I 1-~/-~b- ................................ ~;~:~$ .................................... · 'MW-4 ,3Z3_.0/_0_0' .............................................. _ _4_5_. _8_2_ 7/3/00 43.10 1/3/~'1 .... 394.14 54.2~ ......... J43.~0 ..... 350.34 .... I 6/4/01 ...... 3-~.i 4 ' '5~4.1E ..... 43.0~ -' ~,~'J.~6 ' -- 12/6/01 394.14 54.14 42.80 351.34 2/18/02 394.14 54.14 45.98 348.16 I 3_/_2_7/~97_ ............................................. __N/A__ ......................... 10/20/98 51.45 -':"~7~-~-/-9~ ........................................ 51.31 I ~/_1_2/9_~_ ........................................................... 4_.9_:_7_5. 8!.2~_/9_.9_ ....................... 4_2'_7_7 12/7/99 43.99 3/30700 ....... 51~ I MW-5 7/3)00 43:8~ ..... 1/3/01 393.43 57.00 ' 44.;I ~' 3~49.3'~ 6/4/01 393~43 57.40 43.{)~8 ' 349.45 8/6/01 393.43 57140 42.10 351.33 I 12/6/01 393.43 57.40 4~3.'~ ~ ' '- 350:2~' 3/27/97 ............ ................ J ..... N/_A_ I 10/20/98 45.70 5/12/99 44.10 8/207i~g ............... §-~:9~- ....................................... 12/7/99 ' ' N/A 3/30/00 ............. 4~ MW'6 , 7)3~) ........ 4.~-.~8 ........... 1/3/01 393.76 53.20 43.07 340.56 I 6~4~0~1 " 393.'7~ ' ' ' ,~.~ - 4i:3-~ ............ 35-~4~- 8(6!_01 393.76 53.16 39.75 354.01 1 2/6/01 393.76 53.18 42.14 351.62 2/18/02 393,76 53.10 45.18 348.58 I I E2C Remediation, L£C T2-2 I .... TABLE2 - .. ~. ' SUMMARY OF HISTORICAL GROUNDWATER ELEVATION DATA Mr. Fast Service Station 600 Brundage Lane I Bakersfield~ California ~oc ELEVATION TOTAL DEPTH DEPTH TO GROUNDWATER WELL ID DATE GROUNDWATER ELEVATION I (feet MSL) (feet BTOC) (feet BTOC) (feet MSL) 3(_2.7~/9~7 ........................................ 4_9:__5_© 10/20/98 49,34 1/11/99 53,16 i .5./L.2(_9__9_ ............................... 4_2_.~ 8/20/99 45.13 1~.~)~§ ........ ' '" ~,-5E"i'~ ................... i MW-7 7/~0-0 - - I~i/~ ' lJ3~8'i' 393.63 52.80 ...... ,~;0-1~ ......... ~4~:,~5 ...... 6/4~(~1 3~3,63 8§,~2 ........ ~4,5--~ .............. 8/6/01 393,63 53,72 42,78 350,85 I ?J7/__0_1 _3..93._6_3~_ ........... _5_3.7_2. ........ 4_4_.3__2_ ........... _3._4. _9: 3! 2/?_/0_2__ ...... 393.~.3' ....... 5_3.?_0. ........ _4_7.2__3_ .............. _3_4.6_:_5.0_. ....... 7/3/00 43.42 I 1/3/01 393,95 __ 52,80 43,90 350,05 6/4/bl .~93.-9~' ...... 5~',~0 .............. 4-3~3~- ............... ~-,~.~5~ '- -- MW-8 8/6/01 393.95 5~:~8 ...... ~:~8 ............ -§5~ ...... 12/8/0~ 3~-3.95 ' ' ~:90 ...... ~3~1~ ................ §5--01~- ..... I 2/1 ~/02 393,~ '5~i~ 46'.~ ................ 3-4-7,7~ ......... W3_!0.~ ................. ............... ~4_4'0._2 ......................... 1/3/01 394.05 51.60 45.14 348.91 I 6/4/01 394.05 50.80 43.52 350.53 MW-9 8/_6_/0_1_ ....... 39_4:0_5 .............. 5_0_.~ 2 ..... ~_2_.__2_'~ ............... ,3_5_1:-64 12/6/01 394.05 50.72 44.24 349.81 2/18/02 394.05 50.68 46.94 347.11 I 7/3/oo I 45.51 6/4/01 392.91 52.34 45.34 347.57 I MW-10 8/6/01 392,91 52,34 43,36 349,55 12./6/01 392.91 52.34 44,14 348,77 2/18/02 392.91 52,32 47,12 345.79 I 7/3/00 45.75 WELL SILTED UP, TAKEN OUT OF SERVICE, REPLACED BY MW-11R ' 6/4/01 391.22 63.52 54.76 336.46 8/6/01 391,22 63,52 47,65 343.57 MW-11R 12_./'~/-01- ~391.2~- ~-;3:~-~ ..... 45.-0~ ............... 3~,6~:14 .... 2/18/02 391.22 63.40 54.63 336.59 ,~ 6/4/01 392.01 NMFP NMFP NMFP 8/6/0i' 392.01 h-~lS-I~ ...... ~i-1~:~ ~ ' MW-12 12/~/01 392.01 ...... 4~-,~- .............. 3~,2'3 ....... 6/4/01 392.65 65,40 58.10 334.55 8/6/01 392,65 65,40 50,97 .. _3__4.~1 ,_6__8_ MW-13 12/7/01 391,65 65,38 49,52 342,13 2J1.9(~ . 391..6_5 . 65.3_~ ....... 57:4~ .......... ~_34,.8_9 I ' I ~.E2C R~mediation,, LLG T2-$ I w ~ Project Number 1801BK04 . Apdl 9, 2002 I ~. ;- . TABLE 2 SUMMARY OF HISTORICAL GROUNDWATER ELEVATION DATA ' Mr. Fast Service Station 600 Brundage Lane I Bakersfield~ California TOC ELEVATION TOTAL'DEPTH DEPTH TO GROUNDWATER WELL ID DATE GROUNDWATER ELEVATION i (feet MSL) (feet BTOC) (feet BTOC) (feet MSL) ~!4_/.C~! .... 37~.~? ....... _7~.?_ .............. ?_.~ ................. _3_27_?_ ........ 8/6/01 ~ 391.87 76.90 68.41 323.46 MW-14 12/~/01 391.87 ~ ............. ~.5~ ...................... §~i:~:~ ......... .I 2/1'8/02 39!:-8-7' ............. 7-6-L9-8 ...... ' ' '69-::30 ................ 322:5-7' ........ 12/7/01 390.75 73.24 70.72 320.03 MW4SS ~/1'~)~ ..... §~b:~§ ' ' ¢~:~8 .... ~ -b'~/ .................. :-::': I 12/7/01 390.72 87.24 DRY ........ MW-15D 2/18/02 390.72 87.24 DRY ........ I 12J7/01 390.97 79.10 . DRY MW-16 2/1'8~' ' 3'90,9;/ ........... ~::1'~ .................... D~7 .............................. 12/7/01 390.74 81.02 57.14 333.60 MW-17S 2/18/02 390.74 79.78 61.50 329.24 12/'7/01 390.91 91.26 DRY ........ MW-17D 2/18/02 390.91 91.20 DRY ........ I Notes: ................................................... NMFP = Not measured, greater than 30' of free-product Top of Casing Elevations are measured at the north side of casing and referenced to mean sea level I Groundwater Elevations- are not corrected for product thickness before 01/03/01 IGroundwater elevations after 01/03/01 are based on Benchmark on canal abutment I i E2C Rernediation, LLC T2-4 Project Number 1801BK0~ Ap~19, 2002 7 :~*..:. TABLE 3 SUMMARY OF HISTORICAL GROUNDWATER ANALYTICAL DATA MR. FAST SERVICE STATION 600 EAST BRUNDAGE LANE BAKERSFIELD, CALIFORNIA I 1 WELL ID DATE 7/20/95 4,200 113,000 ND 40,000 329,000 NA NA NA NA NA NA 4/5/96 NA NA NA ..... NA NA NA ..... N~A NA NA ~.-. '-' ~/1-2.~- ..... ~'~'~ .......... ~S~ ........ ~N~S~-P-- ...... -N~-FP . . ........... NA NA NA NA NA NA NSFP NSFP NSFP NA NA NA NA NA NA 7r~00 8.2 8.5 ~,000 24,0o0 m0,000 ........................................... NA ....N~A_ .............. NA NA 1-3-01 (Dup) <.20 710 1400 18 17,930 NA <200 <20 <20 <20 <.20 ' . 3-2-01 NSFP NSFP NSFP NSFP NS~P- - :'-~:~--- NSFP NSFP NSFP NSFP NSFP ~ ~,'. ' 8/6/01 <50.0 585 "--8~ ......... 7,760 33,500 .......... N-A- .... -<~.00:0 ~..5~.0 ~50.-0 ..... <50:0 - <50.0 i-~o~ ..... -ND ............................ ND ND '; ND 230 5.280 73.890 NA I' ND -ND ......................... N~ ,/~ 2/16/02 NSFP NSFP NSFP NSFP NS~ NSFP NSFP NSFP NSFP NSFP NSFP ;:.~,~ .. 4-5-96 <0.3 <.3 <0.3 <.03 <50.0 NA NA NA . NA NA NA , ie2" 3:~:~-~ ......... ~T(~ 6.2 0.83 4.5 44 NA ' NA NA NA NA NA : 10-20-98 <0.5 <0.5 <0.5 <0.5 <50 NA ..... ~NA <0.5 NA NA NA - 8-20-99 <0.3 <0.3 <0,3 <0.6 <500 NA <2.0 NA NA · .- · . ......... _N_A ,. NA 12-7-99 <0.3 <0.3 <0.3 <0.6 <500 NA _N_A <2.0 NA NA NA · MW-2 . . ............................ ._<0.m3_ ..... __<0_.6 <500 ...... <0:g ..... --~1~ ....... --NA NA ~.~.. 7.3-0o <0.5 . <0.5 <0.5 <0.5 <50 ~- ._N.~ ~0.-5 .... -~iX ........NA NA · .:~: .... , ................................................... 55 <0.50 <0.50 · .::':~ , 6/4/01 <0.5 <o:g <0.5 <0.5 <~0 NA <2.5 <0.g ' ' -<0% ....... ~.-5- <0.5 !m m imm 'm mm m ,m mm m m m .mm mm mm m !m-, il Project Number 1801BK04 April 9, 2002 TABLE 3 SUMMARY OF HISTORICAL GROUNDWATER ANALYTICAL DATA MR. FAST SERVICE STATION 600 EAST BRUNDAGE LANE BAKERSFIELD, CALIFORNIA WELL ID DATE 4-5-96 41 42 35 3,000.00 8,600 NA NA NA NA NA NA - _ 1 100 12 {300 NA NA NA NA NA NA ......................... I NA 3.8 NA NA NA _: _1 -_1_1_*_9_9 40 ~ -~1-6:~ ............ ~6(~ ............ ~-8~ ..... ~8~--' NA NA 65.0 NA NA NA 5-12-99 8.36 <0.3 ...... ~:~- .... 421 14 300 NA NA 69.4 NA NA NA ........ 8-20-~- ........ <-~.~ ......... ~3-- ...... ~-.~- ....... ~0~6 ...... ~ ...................................................... NA NA ' <2.0 NA NA NA .......................................................... NA 1.1 NA NA NA 12-7-99 <0.3 <0.3 <0.3 1.38 MW-3 1-3-01 <0.50 <0.50 <0.50 <0.50 <0.50 ......................................... , ....... NA <5 <0.50 <0.50 <0.50 <0.50 dup <5.0 <5.0 <5.0 <5.0 388 NA . <25.0 <5.0 <5.0 <5.0 6/6/01 ....................................................................................................... <5.0 <5.0 12/6/01 ND 1.06 ND ND 515 ...... NA ND ND ND ND ND 4-5-96 <0.3 <0.3 0.75 260 .......................... N_A_ ..... NA NA NA '- -3T.2~:~ .... ~.06 ..... ~0:0 ....... -~':~5 1,600 NA N^ 9.5 34O N^ ---i~; ........... -N-~ -N-X ......... N~- 110-20-98 15 2.50 87 930 .... ~,,60~ ........ ~i-A- .................... 300 NA ........ , ......................... NA NA NA ___~'1~'~.?_. <0.5 <o.s <0.5 <0.5 -:-<s-o ~ - 'h-A- ...... ~A ........... :/.-2 ....... ~i^ .A .... "A-- .... 5-12-99 58:~- 9.87 388 1,040 13,600 NA - NA 524.0 NA NA NA <0.3 <0.6 .......... <5(X~ NA NA ~3.-4-~ ......... NA I~ .... ~-~ ' <0.3 <0.3 1; -1 .......... ......... ...... ............ ......................................... ~ ................................................ NA MW-4 3-3O-OO <0:3 <0.3 <O.3 <0.6 <5OO NA NA <O.5 NA ~NA .... 7-3-00 <0.5 <0.5 <0.5 <0.5 <50 NA NA .... <0.5 NA NA NA --~oT <0:5 ...... <-~.~ ...... :<01§ <0.5 ..... <--50 ......... -NA- ............. ;~.-5- ........ ~.5 <0.5 .................................... ..... <2.5 <0.5 6/6/01 <0:5 <0.5 <0.5 <0.5 <50 NA <2.5 <0.5 <0.5 <0.5 <0.5 1 2/6/01 6.4~, 295 "~' 295 2,210 '~A ND ND- ND ~D - 2/1~" 5~ -23~3- ....... 4:7' 2~.5 ......-2~X~ .......... ~-,~ ND .......... ~-~- ..... ND I~D '1~ 3-27-97 8.8 32 3.6 29 320 NA NA . NA .................................. NA_ _. . NA NA -~0:-'20:~)~ <0.5 <0.5 <0:5 <0:5 <50 I~A- NA : <0.5 ........... NA NA - i':1-1-99- ' .' <0.5 .... 3.-~-- ...... <0:5 1:~0 ......... ~ ........ -~A- NA ~0:$ ......N-A NA "'N~- .... 5-12-99 <0.3 . <0.3 1.27 <500 NA NA 21.40 NA NA NA 8-20-g9 <'0.3 <0.3 <0.3 <0.6 <500 NA NA~ 1.65 NA NA ..... ~1~ .... -;1'~:;/--~9-- <0.3 -'-~-.;3 '~ ...... <0.3 <0.6 ........... <~5-00 ...... ~1,~ NA ';'- ;1':0 - -N~. NA ..... ~ -- ' ~-'3~-00 <0.3 ..... <0.-3- .....<0.3 <0:3......... -<~ 0~- ...... ~ NA ,~0.-5- ...... NA NA MW.5 ' '-~.'~0 <0.5 ~t~5- ..... <0:5 <0.5 ....... -~5~- ....... -N,~ ..... <0:5 ...... NA NA ........... ............................................. NA NA 4.3-01 <0:~ <0.50 <o.5o 2:;~6 <5o NA ~, ..... ~.-50 ..... <0.5o <0.50 ..... ~0:50- .... 3-2:~ <O.50 -':;~.-.~ ....... <0.~0 <0:5O ..... -<-50 ...... ~i^' <5 ~:50 ..... <0.50 <0.50 " . .6/_4/.0~ <0:5 <_0._~5. ...... <0:5 <0.5 <50 NA <2..5 <0.5 <0.5 <0.5 <0.5 6/6/01 <0.5 <0.5 <0.5 <0.5 <50 NA <2.5 <0.5 <0.5 <0.5 <0.5 12/6/01 12.41 480 10~5' 375 ........... ~5-~-~ ........ N.~ ND'-' ND 'ND ND ' 'l'~D '~'i8/02' ...... 360 '" 1,0'~ .... ND' 720 ........ ~1'~0 ' ' I:,IA- ND ND ' - ND ND N~)' - E2C Remediation, LLC Pr~jecf Number 1801BK04 ~pr~;,2oo2 ~ TABLE 3 SUMMARY OF HISTORICAL GROUNDWATER ANALYTICAL DATA MR. FAST SERVICE STATION 600 EAST BRUNDAGE LANE BAKERSFIELD, CAMFORNIA ~27-97 0.98 5.90 . 0,92 5,80 ~.~ NA NA NA NA NA NA .............................................. ' NA NA NA ~12-99 ~.3 1.05 MW~ 7-~ ~.5 <0.5 __ ~.5 ~ 5 <~ NA <0.5 .... NA NA NA NA ....................................................... ~.5 ~.5 ~.5 ~.5 ~01 <0.5 ~.5 ................ . ~12-99 NSFP NSFP NSFP NSFP N~'~ ...... ~'A- ~A ' '- ~ ..... ~ ....... N-A' NA .~*~.~ NS~P NsFP NSFP NSFP NSFP NA ~SFP NSFP NSFP NSFP NSFP ~01 ~0 ' ~,4~ ...... ~,1~ ....... 28~~ 24:9~0 '-- ' ~"' . _~ ~0 ~0 ~0 <20 ,-.~, , 7-~ ~0 '~,~ 6,3~ ~.. 73,~ 2~,~ NA NA 5~ NA NA NA ' '~'; :~ dup ~ 48,~ 4,1~ 26,~ ~,610 NA ~,~ ~ ~ ~ ~" :.' ~ ................ ~.0 ~0.0 ~0.0 ~.0 <50.0 Pmje¢~ Number 1801BK04 ~o~19, 2002 TABLe: 3 SUMMARY OF HISTORICAL GROUNDWATER ANALYTICAL DATA MR. FAST SERVICE STATION 600 EAST BRUNDAGE LANE BAKERSFIELD, CALIFORNIA · :.. WELL ID DATE BENZENE XYLENES TPHg TPHd TBA MTBE DIPE ETBE TAME 7-3'-00 <0.5 <0.5 <0.5 <0.5 <50 NA NA <0.5 NA NA NA 1-3-01 <0.50 <0.50 <0.50 <0.50 <50 NA <5 <0.50 <0.50 <0.50 <0.50 ', 3/2/01 ~0.:~) ...... ~0~-50- .... .... ~0'.5~' .... <6:5~-' ' ........ ,~5~ ....... NA !. <0.50 · '~ ' ~ MW-9 ............ <2 5 .................... _<p_.5_. 7-3-.00 <0.5 <0.5 <0.5 <0.5 <50 NA <0.5 NA .............................. NA NA NA ;;: · 1-3-01 <0.50 <0.50 <0.50 <0.50 <50 NA <0.50 <0.50 <'0.50 .................................................................. _<5 ................ <0.50 3/2/01 <0.50 <0.50 <0.50 <0.50 <50 NA <5 <0.50 <6:50 <6.-~(~ MW-10 ................................ 6/4/01 <0.5 <0.5 <0.5 "-<0.5- ........ ~r;~ ....... N~ ..................... <2.5 . ,~0:5 <6.5- ' ,,~'0: 5' ....... T<~ ..... 6/~01 <0.5 <0.5 <0.6 <or; ..... ~S¥ .... ~× ..... ;~.-5 ....... <6.r; .... <0.5- 12/6/01 4.69 210 65 230 1,735 NA ND.. ND ND ND ND 2/1 ............ 6/02 ND 14 0.7 25.7 215 NA I~ID' ND ND ND ND . 7-3-00 <0.5 <0.5 <0.5 <0.5 <50.0 NA NA <0.5 NA NA NA "!:!': * MW-11 '"'~:3:,O~ ~'~'~- . ......... -;~,~3 ........ ~:6~X) ..... 1*~:300 .......~2,o~--'I......~ ...... ~ ...................... ~r;-.... <20 <20 <20 ~...~ . 3/2/~)-~ ~S~vs ..... ~-s-v;,§ ~Sws "-~SW~ ....... ~§~,§ ..... N~W§" ~W~ .... h~vs ,SWS N§WS -i, iSws ' '" '~'. ' . .... ~'~)1 ................. Well t~-k~n-(~Jt-~'S~-s-i]'~u-p-~ 12feet ~-r:0~ botto~n: r~l-~l'~ MW:¥1-Fi ..... _ ~0_1, 5~_.O .....!_!'_9_50~.. _1~350 7,230 54,410 <50 <250.0 <50.0 <50.0 <50.0 <50.0 ~'~:. 8/6/01 866 29.850 2.425 '-:1';~,-~3~6 ........... ~-7,4~5- NA ' ~2.5~-.~ .... ~50.-0 -'<50.0 ",' "i~/~01 ND .... 4~ I ND ' " 4:~.15 ....... 6:7~5-" NA- ' 'N~ .... ND" ND · I~1~) .... I~l~-- :;!?, MW-IIR '2/16/02 '140 '-':1~'56~_~'.' ~ 1.0902:4~ ......... '22:0~3 NA ND N'D ND ~D -' N~' .-.' ... D~)li~ate 140 1,320 1.063 2-,~,9-0 .... ~:0~0-- - NA 'I~D 'N-D~ ND ND . .~' 6/4/01 NSFP i NSFP NSFP NSFP NSFP NSFP NSFP NSFP NSFP NSFP NSFP - :~ 8:/~/01 ~IsFP- .... ~SF~P' ' -;~SFP . N~F~P ........ -N'~'~ .... NA I~SFP NsFi:) NSFP N~='P ' -N~-~)- ' ,"!?:.,., MW-12 1-2,~7/01 NSFP NSFP '-NSFP NSF-p'; ........ N-~Fp- NA I,~',~ Fp N~P NSFP N~'~-~ :,~,~ ~. .' 2/1-9/02 NsFP "~S~=~ 'NSFP N~FP ...... -N~'F-P' NSFP I~FP NSi;:P ' NSFP NS-~P' ' N~¥='~-' 6/4/01 <50.0 <50.0 <50.0 ~50._0_ ..... _5_~_s?. <50 <250.0 <50.0 <50.0 <50.0 <50.0 "i! ' MW-13 l~';/J01 11'5 6:~5~- 4.690 14.-8-1' 5 ...... 1~:900' N,~ -ND ND ND l~l[~ ND : ?~ '., ~:1'9/02. NsFP 'N~'F'~ NSFP NS-FP .... -N§'I~F; '' NSF~ N-SFP" 'NSF;P NSFP NS~P ' I~l~S-~-'" ' .' ~ E2C Rernediation. LLC T3-4 . ' TABLE 3 SUMMARY OF HISTORICAL GROUNDWATER ANAL~CAL DATA MR. FAST SERVICE STA~ON 600 EAST BRUNDAGE ~NE BAKERSFIELD, CALIFORNIA ............................................................................................ ~4~1 871 1,4~ 371 1,057 9~ <~ ~5 0<5.0 <5.0 ~.0 <5 0 W~- ' 1'~ ND ND ................................................................................................... 1~1 NS NS NS NS NS NS NS NS NS NS NS 1~101 NS NS NS NS NS NS NS NS NS NS NS 1~101 ND ND ND ND 1~ NA ND ND ND ND ND ~-17S _ .~1~ ND ND ND ND ~ .... NA ND'- ND ND ~D ND ................................. ~/0~ .S .S .S .S NS NS ~S NS NS , NS NS MW-I~ - ~m' NS ~ ........ -~-- N~ ' '~ ................... NS NS NS NS ' _~_ NS Notes: ND = Below Pra~ Quanti~on Umits: $ampli~ ~do~ by E2C s~ng 01~01 Benzen~oluene-O.5 p~L, Ethyl Benzen~ylenes-0.5 p~, ~E ana~is ~ EPA Me~ ~ fmm10-2~98 to 1-3~1 TPHg-50 M~E ~a~is ~ EPA Me~ ~60b ~esul~ in micr~rams ~r ater ~) = pa~s per bi]li~ (ppb) NSFP = Not ~mpl~ ~is qua~er due to pre~e of fr~p~u~ 31PE = Diis~r~ Ether NSWS = Not sample, well d~. ~sing silt~ up 12 f~t from ~om ~BE = Eth¢ Te~a~ Bu~ E~r T~E = Te~ia~ ~1Me~yl Ether MTBE = Me~ Te~a~ Bu~ Ether TBA = Te~ia~ Bu~ ~A = Not ~a~ for ~is ~m~und TPHd = To~l Petroleum H~r~ns as Diesel TPHg = TO~I Pet<leum ~r~ns as Ga~line E~ Re.latin, LLC Proiect Number 1801BK03 March 29. 2002 ! APPENDICES . I APpendix A First Quarter 2002 Well Purging Data Sheets Appendix B First Quarter 2002 Analytical Laboratory Report I I Appendix C Survey Plot of Well Locations E~C Remediation, LLC Appendices Project Number 1801BK03 ' ' ' March 29. 2002 . ! ! ! APPENDIX A -I First Quarter 2002 Groundwater Purge Data Sheets i ! ! ! i E~C Remediation, LLC Appendix A '~ E2C Remediation, LLC WATER QUALITY SAMPUNG RECORD , Groundwater Scientists: Environmental Consultants AND ' 5300 Woodmere Dr., Suite 105, Bakersfield, CA 93313 · WELL DEVELOPMENT DATA (661) 831-6906 / fax: (661) 831-6234 PURGE C~RI~ R~ ~ME NTAKE I ~TE I CUM. VOLI WELLVOL TEMP pH SEC ....... ~_~ ~) I (GAL) . ~' (F), (UNITS) (mmho.s/cm (CO~R,~RBID~,~C.) Well Capacity: 2" - 0,1632 gallon~inea~ foot 4" - 0,6528 gallon~inear foot 6' - 1,4688 gallon~inear foot S~PLED AT: ",.-. E2C Remediation, LLC ' WAT~RQUALITYSAMPUNGRECORD .' Groundwater Scientists: Environmental Consultants AND 5300 Woodmere Dr,, Suite 105, Bakersfield CA 93313 WELL DEVELOPMENT DATA (661) 831-6906 / fax: (661) 831-6234 ~URGE ~RI~ R~ ~ME. INTAKE ~TE CUM. VOL WELLVOL TEMP pH SEC D~ (GMP) (GAL) . ~ (F) (UNITS) (mmhos/cm) (COLOR,~RBID~,~C.) ~o-~.~ ~'~ ~.~ 7~.z7 W~II O~p~c~y: 2" - 0. I~3~ g~llon~ine~r foo~ 4" - 0.~528 g~llon~ine~r foo~ E2C Remediation, LLC WA'i'~R QUALITY SAMPLING RECORD · ' ' Groundwater Scientists: Environmental Consultants · AND 5300 Woodmere Dr., Suite 105, Bakersfield, CA 93313 WELL DEVELOPMENT DATA (661) 831-6906 / fax: (661) 831-6234 PURGE C~C I ERI~ R~ ~ INTAKE I RATE J CUM. VOLI WELLVOL. TEMP pH SEC ~ { (GMP) J (GAL) . ~ (F) (UNITS) (mmhos/cm (COLOR,~RBID~,~C.) o:,3'7 z ~?.o ~.?o .2 ~ ' ~o:3~ 3 b7.7 ~-~ 7 ., z5 'Well Capacity: 2" - 0.1632 gallonflinear foot 4' - 0.6528 gallon~inbar foot 6' - 1.4688 gallonAinear foot E2C Remediation, LLC WATER QUALITY SAMPLING RECORD Groundwater Scientists: Environmental Consultants AND 5300 Woodmere Dr., Suite 10.5, Bakersfield, CA 93313 WELl.: DEVELOPMENT DATA (661) 831-6906 / fax: (661) 831-6234 SAMPLE ID OR WELL NO: ~ ~ "'" [~ DEPTH TO WATER: q 5. q ~ ft ' _ SAMPLEDBY: ~ ~J~L.~_..~. /~--. bO~l~ '~ METHOD OF PURGING: PURGE CHARACTERISTICS REMARKS TIME INTAKE I RATE I CUM. VOLI WELLVOL. TEMP pH SEC _~DEP2~I___ I (GMP)]__(GAL)l: ~ (F) (UNITS) (mmhos/cm) ,,,-~,._ ...... (cOLOR, TURBIDITY, ETC.) Well Oapa¢ily: 2' - 4" No~s: ~07~L UOL~n 6 ~ ~A L I E2C Remediation, LLC WARIER QUALITY SAMPLING RECORD Groundwater Scientists: Environmental Consultants AND 5300 Woodmere Dr., Suite 105, Bakersfield, CA 93313 WELL DEVELOPMENT DATA (661) 831-6906 / fax: (661) 831-6234 "R°'E~~' 'OtAL'OEP,"OFWE,L 5 7. 9,o DATE: i0'~// ~ "~/~ 2 CASING VOLUME: I' ~ ~ gallons . SAMPLEDBY: R. VEL~/~/._, bO~l~l~ ( METHODOFPURGING: ~ C i~ mp PURGE CHARACTERISTICS REMARKS TIME INTAKE ~ RATE J CUM. VOLI WELL VOL. TEMP pH SEC ~ell Capacity: 2" -I0.1632 gallon/linear foot 4' - 0.6528 gallonAinear foot 6" - 1.4688 gallonAinear foot I EaC Remediation, LLC WATI~R QUALITY SAMPUNG RECORD Groundwater Scientists: Environmental Consultants AND 5300 Woodmere Dr., Suite 105, Bakersfield, CA 93313 WELL DEVELOPMENT DATA (661) 831-6906 / fax: (661) 831-6234 PURGE ~RI~ ~ME INTAKE [ ~TE ~ CUM. VOL] WELLVOL TEMP pH SEC .... ~ J. (GMP) I (GAL) . ~ (F) (UNITS) (mmhos/cm) (COLOR,~RBID~,~C.) 19 Well Capacity: 2' - 0.1632 gallonAinear foot 4" - 0.6528 gallon/linear foot 6' - 1.4688 gallonAinear foot E2C Remediation, LLC WATER QUALITY'SAMPlING RECORD. Groundwater Scientists: Environmental Consultants AND 5300 Woedmere Dr., Suite 105, ·Bakersfield, CA 9331:3 WELL DEVELOPMENT DATA (661) 831-6906 / fax: (661) 831-6:~34 PURGE CHARACTERISTICS [. ~ME INTAKE ~TE ~ CUM. VOL~ WELLVOL. TEMP pH SEC . ~ ~ (GMP) J (GAL) ]. ~ (F) (UNITS) (mmhosfcm) (COLOR,~RBID~,~C.) Well Capacity: 2' - 0.1632 gallonAinear foot 4' - 0.6528 gallon/linear foot 6' - 1.4688 gallonAinear foot S~MPLED AT: I NOTES: I ., E2C Remediation, LLC . WA-r~R QUALITY SAMPUNG RECORD ~'~. I Groundwater Scientists ~ Environmental Consultants AND ~'~" · 5300 Woodmere Dr.i Suite 105, Bakersfield, CA 93313 WELL DEVELOPMENT DATA -" (661) 831-69o6./ fax: (661) 831-6234 ~-:: ,O,^, OEPT" OF wE,, 5 & ,, ! i PROJEcT NAME: ~V~ ~ ~,//~5'-F WELL DIAMETER: ~ 5 PURGE C~RI~ ~ · =ME INTAKE [ RATE I CUM. VOL] WELLVOL. TEMP pH SEC D~ (GMP) ~ (GAL) I' ~ (F) (UNITS) (mmhos/cm) , (COLOR,~RBID~,~C.) , Well Capacit{: 2" - 0,1632 gallonainear foot 4' - 0.6528 gallonAinear foot 6' - 1.4688 gaHonAinear foot E2C Remediation, LLC. WATI~R QUALITY SAMPLING RECORD Groundwater Scientists: Environmental Consultants AND . 5300 Woodmere Dr,, Suite 105, Bakersfield, CA 93313 WELL DEVELOPMENT DATA (661) 831-69o6 / fax: (661) 831-6234 S~P~E,OO. WE~LNO= IV~'~ -~ DEPTH TO WATER; 4~'R~ ft PROJECTNO: TOTAL DEPT~ OF WELL ~.l~O~ ~ ft DATE: O~'~l ~)/C) Z CASING VOLUME: O ~)~ gallons SAMPLED BY: R' V~[~' ['~ ~' PURGE C~C~Ri~ ~ME INTAKE I RATE I CUU'VOLI WELLVOL. TEMP pH SEC __ D~ (GMP) I (GAL) ~. ~' (F) (UNITS) (mmhos/cm) (COLOR.~RBID~,~C.) Well Capacity; 2' - 0.1632 gallon/linear foot 4" - 0.6528 gatlonAinear foot 6" - 1.4688 gallon/linear foot I I · _. E2C Remediation, LLC WA'I'~R QUALITY SAMPLING RECORD I Groundwater Scientists: Environmental Consultants AND ' 5300 Woodmere.Dr., Suite 105, Bakersfield, CA 93313 WELL DEVELOPMENT DATA (661) 831-6906 / fax: (661) 831-6234 P~O, EC~ ' PURGE ~C'I'~H~ ~ME INTAKE I RATE CUM. VOL~ WELLVOL TEMP pH SEC · D~ (GMP) .... I I (GAL) ~. ~ (F) (UNITS) (mmhos/cm) I ! ,I I Well Capacity: 2" - 0.1632 gallon~inear foot ' 4' -0.6528 gallonAinear toot .6" - 1.4688 gallonAinear foot SAMPLED AT: I I I E2C Remediation, LLC WATER QUALITY SAMPLING RECORD I Groundwater Scientists: Environmental Consultants AND 5300 Woodmere Dr., Suite 105, Bakersfield, CA 93313 WELL DEVELOPMENT DATA , (661) 831-6906 / fax: (661) 831-6234 I PURGE C~RI~ ~ME INTAKE I RATE CUM. VOLI WELL VOL T~MP pH SEC ' I 4' - 0.~528 ~ailon/lin~ar toot I EaC Remediation, LLC WATI~RQUALFFY'SAMPLING RECORD Groundwater Scientists: Environmental Consultants AND 5300 Woodmere Dr,, Suite 105, Bakersfield, CA 93313 WELL DEVELOPMENT DATA (661) 831-6906 / fax: (661) 831-6234 PROJECT NO: TOTAL DEPTI~I OF WELL f t' PROJECT NAME: ~"~ ['~ ~("~-~ "~' WELL DIAMETER: ~.'~ PURGE CHARAC'i ~-HISTICS ' REMARKS TIME ' INTAKE RATE I CUM VOL WELLVOL. TEMP pH SEC _ ~DEI~H_ .. I ~GMP) I (GAL) . ~ (F) (UNITS) (mmhos/cm) /r'~,r~ 'n Well Capacity: 2" 0.1632 gallon/linear foot 4" - 0.6528 gallon/linear foot 6" - 1.4688 gallon/linear loot SAMPLED AT: I NOTES: ! Eac Remediation, LLC WATER QUALITY SAMPLING RECORD ' Groundwater Scientists: Environmental Consultants AND 5300 Woodmere Dr., Suite 105, Bakersfield, CA 93313 WELL DEVELOPMENT DATA (661) 831-6906 / fax: (661) 831-6234 ~PLE,OO, WEL'.O: . IA ~'-- '1 3 OE~ToW"TER: ~ 7° ~ 3 ft PURGE C~C~RI~ ~ME INTAKE ~ ~TE CUM. VOL~ WELLVOL TEMP pH SEC ~ (GMP) (GAL) ~. ~ (F) (UNITS) (mmhos/cm) (COLOR,~RBID~,~C.) Well Capacily: 2" - 0.1632 gallonAinear fool 4' - 0.6528 gallo~linear foot 6" - 1.4688 gallonAinear foot S~IPLED AT: NOTES: E2C Remediation, LLC WA'I'~R QUALITY SAMPLING RECORD I Groundwater Scientists: Environmental Consultants AND 5300 Woodmere Dr., Suite 105, Bakersfield, CA 93313 WELL DEVELOPMENT DATA · (661) 831-6906 / fax: (661) 831-6234 ~,~: o~ Vo~ c~s,~vo~u~: ~.zs ~a,,o= I PURGE C~RI~ ~S =ME INTAKE ~TE I CUM. VOLI WELLVOL. T~P U~S SEC D~ ~" (GMP) ~ (GAL) ~. ~ , ( ) ( ) (mmhos/cm (COLOR ~RBIO~ ~C.) I I Well Capacity; 2" - 0.1632 gallon/linear fool 4" - 0.6528 gallonAinear fool 6' 1.4688 gallonAinear foot S~PLED AT: I I E2C Remediation, LLC WATI~R QUALITY SAMPLING RECORD Groundwater Scientists: Environmental Consultants AND 5300.Woodmere Dr., Suite 105, Bakersfield, CA 93313 WELL DEVELOPMENT DATA. (661) 831-6906 / fax: (661) 831-6234 PROJECT NO: 'TOTAL DEPTH OF WELL ' PURG[ CH~J~CTER[S'nC8 ~ [NT^~<E I ~^T~ I CUU. VOL, W~LLVOL. TEU~ pH S~C ~ ........ D~ [ (GMP)I (G~L)I' ~ (F) (UNITS) (mmhos/cm) (COLOR,~RBID~.~C.) ' Well Capacity: 2" - 0.1632 gallonRinear fool 4" - 0.6528 gallon~inear 1ool 6' - 1.4688 gallon~inear fool S~PLED AT: I NOTES: E2C Remediation, LLC WATI~R QUALITY SAMPLING RECORD Groundwater Scientists: Environmental Consultants AND 5300 Woodmere Dr., Suite 105, Bakersfield, CA 93313 WELL DEVELOPMENT DATA (661) 831-6906 / fax: (661) 831-6234 PR~E~E: ~P~ ~65 T. WELLDI~R: DATE: OZ/I ~?0 t CASING VOLUME: . 0 ~O gallons ~ME INTAKE ~TE CUM. VOLI WELL VOL T R~S . ~ I (GMP) J (GAL) Well Capacity: 2" - 0.1632 gallonAinear foot 4" - 0.6528 gallonAinear foot 6" - 1.4688 gallonAinear foot S~PLED AT: NO~S: ~oTAL. VoLV I ! E2C Remediation, LLC WATI~R QUALITY SAMPLING RECORD I Groundwater Scientists: Environmental Consultants AND 5300 Woodmere Dr., Suite 105. Bakersfield, CA 93313 WELL DEVELOPMENT DATA (661) 831-6906 / fax: (661) 831-6234 PROJECTN~ TOTAL DEPT~ OF WELL "~q' ~ Z DATE: O~//"] ~/10 ~__.. CASING VOLUME: ~ gallons i !SAMPLED BY: r~ ~JE. L6Z ~0¢/.~ m E_ METHOD OF PURGING: I ' PURGE CHARACTERISTICS REMARKS TIME INTAKE I RATE I CUM'VOLI WELLVOL. TEMP pH SEC ~WH ~ (,,,,~,GA~i. ~ (~) (UNITS) (mmhos/cm) (COLOR, TURBIDITY, ETC.) I I I I I Well Capacity: 2' - 0.1632 gallon/linear foot · 4" - 0.6528 gallon/linear foot 6" - 1.4688 gallon/linear foot I SAMPLED AT; I NOTES: E2C Remediation, LLC WA'i'~R QUALITY SAMPLING RECORD Groundwater Scientists: Environmental Consultants AND 5300 Woodmere Dr., Suite 105, Bakersfield, CA 93313 WEELDEVELOPMENT DATA (661) 831-6906 / fax: (661) 831-6234 SAMPLE ID OR wELL NO: ~"~/-- ' '~/' 5 ~ DEPTH TO WATER: ,. ~.~0 't PURGE C~RI~ · ME NTAKE RATE CUM. VOL WELLVOL TE~P pR SEC D~ ~ (GMP) ~ (GAL) , ~ ( ) (UNITS) (mmhos/cm / Well Capacity: 2' - 0.1632 gallon~inear foot, 4" - 0.6528 gallonAinear foot 6" - 1.4688' gallon/linear foot S~PLED AT: E2C Remediation, LLC WATI~R QUALITY SAMPLING RECORD Groundwater Scientists: Environmental Consultants AND 5300 Woodmere Dr., Suite 105, Bakersfield, CA 93313 WELL DEVELOPMENT DATA · (661) 831-6906 / fax: (661) 831-6234 PROJECTN~ TOTAL DEPTH OFWELL ~1. Z ~) ft IDATE: ' I O~ S/0 ~ CAS'NG VOLUM E: '--"--' gallons s~P~EO.¥: P,, v~b~z/c4, boCC%,t ,~OOOFPUR~.NG: --'- PURGE C~RI~ · ME INTAKE I ,~TE CU~.VOL WELLVOL TEUP pH SEC D~ [ '(GMP) ~ (GAL) : ~ (F} (UNITS) (mmhos/cm) (COLOR.~RBID~,~C.) Well Capacity: 2' - 0.1632 gallon~inear foot 4' - 0.6528 gallonAinear toot 6' - 1.4688 gallo~inear foot S~PLED AT: I NOTES: I I I APPENDIX B First Quarter 2002 Groundwater Analytical Laboratory Report ! I E2C Remediation, LLC Appendix B Client Name E2C Remediation, LLC 661.831.6906 fax 661.831.6234 Analysis Requested Sample Matrix Project Name: T . ,~ ~' ueous Client Address: 5300 Woodmere Drive, Suite 105, Bakersfield, CA 93313 ~' ~. ~. < < ~. '" ~ ~' ~ ~ ~ ~ Soil Project Manager: ~ O~ 8 ~ ~ ~ ~ ~ ~ ~ ~ < ~ ~ ~ ~ ~ - ~ ~ ~ > ~ ~ ~ Acidified Sampler Name: ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ 0 Sample Date Sample Time Sample Description and conlainerType ~ ~ ~ ~ ,> ~ ~ ~ ~ ~ Comments .,"12' 15 '~ Turnaround Time Requested: 24'Hour 48 Hour ,5-Day ~ Standard Client Name E2C'Remediation, LLC 661.831.6906 fax 661.831.6234 Analysis Requested Sample Matrix Project Name: J'~ ~,. 'T ~' Aqueous Client Address: 5300 Woodmere Drive, Suite 105, Bakersfield, CA 93313 ~ ~. ~ <~ <~ ~ Sample Date Sample Time Sample Description and Container Type ~ ~ m ~ ~ > > m ~ = ~ m Comments Turnaround Time Requested: 24 Hour ~ 48 Hour ~ ,5-Day Standard' · Received By: ~//~/~L .//~__~ Date: ~/fg~. J Received By: Date: I "Halcyon Laboratories, nc. Laboratory Report I Certification # 1920 CLIENT E2C Remediation, LLC Project Name: Mr Fast i 5300 Woodmere Drive, Suite 105 Bakersfield, CA 93313 Matrix: Aqueous I Sampled by: Ramon Velez&Ruben Dorame TESTS: TPH Gas by EPA 8015M TPHg Analysis: 2/21&2/25/02 I Date of Report: 2/26/2002 Units: ug/L I Sample #: 2K2-2258 2K2-2259 2K2-2260 2K2-2261 2K2-2262 2K2-2263 2K2-2264 Date Sampled: 2/18/2002 2/18/2002 2/18/2002 2/18/2002 2/18/2002 2/18/2002 2/18/2002 DLug/L Sample Description: Tblank MW-2 MW-3 MW-4 MW-5 MW-10 MW-9. I TPH Gasoline ND 170 1,140 200 190 215 380 50 Surrogate Recovery % 99.8 90.8 90.5 102 95.3 97 ' 95.6' I Sample #: 2K2-2265 2K2-2266 2K2-2267 Date Sampled: 2/18/2002 2/18/2002 2/18/2002 DL ug/L I Sample Description: MW-14 MW-6 MW-I 7S I TPH Gasoline 590 150 ND 50 I Surrogate Recovery % 81.6 96.8 85.2 Sample #: 2K2-2268 2K2-2269 2K2-2270 I Date Sampled: 2/18/2002 2/18/2002 2/18/2002 DL ug/L Sample Description: MW-I IR MW-18 MW-8 I TPH Gasoline 22,000 28,000 27,500 2500 Surrogate Recovery % 98.8 96.8 98.1 IDL = Detecti°n Limit ~~-~ ND - Non-Detect at given DL NA - Result not available Principal Analyst: Phil Acosta ' EPA 8260B b rat W .... Wa.rSampleResul~ in:ug/L Cedification ¢ 1920 . .. ' 5300 Woodmere Ddw, Suite 105 Bakemfield, CA 93313 Project ID' Repo~ Date: 2/28/2002 Staple ID · 2258~b~nk Analyte Result Method RL Units 5 Oxygenates t-Butanol (TBA) Tert-Butyl Alcohol ND 2.5 uS/L, Methyl Tert-Butyl Ether (MTBE) ND 0.5 Diisopropyl Ether (DIPE) ND 0.5 · . ug/L Ethyl Tert-Butyl Ether (ETBE) ND 0.5 Tert-Amyl Methyl Ether (TAME) ND 0.5 ugFJ_, BTEX Components Benzene ND 0.5 Toluene ND 0.5 ug/t, Ethylbenzene ' ND 0.5 ug/L m & p Xylenes ND , 0.5 ug/L o Xylenes ND 0.5 Internal Standards Results % Recovery Benzene, fluoro 50:0 100% Benzene-d5, chloro- 50.0 100% 1,4-Dichlombenzene-d4. 50.0 100% Surrogate Standards Methane, dibromofluoro- 94.6 189% 1,2-Dichloroethane~d4 94.0 188% Toluene-cl8 78.3 157% p-Bromofluorobenzene (BFB) 40.1 80% Halcyon '~'~"'~nc. '" ~" LaboratOries;:~ .... ...... : :. .. ? ... EPA 8260B LaboratorY Report.' Water Sample Results in ug/L Certification # 1920' CLIENT: FaC Remediati°n, LLC 5300 Woodmere Drive, Suite 105 Bakersfield, CA 93313 ProjectID: Mr Fast Report Date: .2/28/2002 Sample ID: 2259/MW-2 I Analyte Result Method RL Units I 5 Oxygenates t-Butanol (TBA) Tert-Butyl Alcohol ND 2.5 ug/L I Methyl Tert-Butyl 'Ether (MTBE) ND 0.5 ug/L Diisopmpyl Ether (DIPE) ND 0.5 ug/L Ethyl Tert-Butyl Ether (ETBE) ND 0.5 ug/L Tert-Amyl Methyl Ether (TAME) ND ' 0.5 u~_, I BTEX Components I Benzene 4.7 0.5 ug/L Toluene 3.9 0.5 us/L Ethylbenzene ' ND 0.5 ug/L I m & p Xylenes 31.3 0.5 ug/L o Xylenes ND 0.5 ug/L Internal Standards Results % Recovery I Benzene, fluoro 50.0 100% .Benzene-d5, chioro- 50.0 100% i 1,4-Dichlorobenzene-d4 50.0 100% Surrogate Standards Methane, dibmmofluoro- 98.4 197% 1,2-Dichloroethane-d4 93.8 188% Toluene-d8 83.0 166% I p-Bromofluombenzene (BFB) 39.7 79% .Laboratories' Inc. *: ." ?i!.~,:-.'." EPA 8260B Laborato.ry Report water Sample Results i. ug/I. Gortification # 1020 . . CLIENT: E2C Remediation, LLC . 5300 Woodmere Drive, Suite 105 Bakersfield, CA 93313 Project ID: Mr Fast ' · Report Date: 2/28/2002 Sample ID: 2260/MW-3 ' Analyte Result Method RL Units 5 Oxygenates t-Butanol (TBA) Ted-Butyl Alcohol ND 2.5 ug/L Methyl Ted-Butyl Ether (MTBE) ND 0.5 ug/L Diisopropyl Ether (DIPE) ND 0.5 ug/L Ethyl Ted-Butyl Ether (ETBE) ND 0.5 ug/L Tert-Amyl Methyl Ether (TAME) ND 0.5 ug/L BTEX Components . Benzene 19 0.5 ug/L Toluene 55 ~0.5 ug/L Ethylbenzene ' ND 0.5 ug/L m & pXylenes 7.1 0.5 ug/L o Xylenes 47 0.5 ug/L Internal Standards Results % Recovery Benzene, flUoro 50.0 100% Benzene-dS, chloro- 50.0 100% 1,4-Dichlorobenzene-d4 . 50.0 100% Surrogate Standards Methane, dibromoflu°ro- 96.5 193% 1,2-Dichloroethane-d4 92.9 186% Toluene-d8 78.1 156% p-Bromofluorobenzene (BFB) 68.5 137% Ha on Laboratorie 'Inc. ":"' '~' '~':' EPA 8260B LabOratory Report Water Sample Results in ug/L Certification # ;I 920 CLIENT: E2C Remediation, LLC 5300 Woodmere Drive, Suite 105 Bakersfield, CA 93313 Project ID- Mr Fast .- Report Date · 2/28/2002 Sample ID · 2261/MW-4 Analyte Result. Method RL Units' 5 Oxygenates t-Butanol (T'BA) Tert-Butyl Alcohol ND 2.5 ug/L Methyl Tert-Butyl Ether (MTBE) ND 0.5 ug/L Diisopropyl Ether (DIPE) ND 0.5 ug/L Ethyl Tert-Butyl Ether (ETBE) ND 0.5 ug/L Tert-Amyl Methyl Ether (TAME) ND 0.5 ug/L BTEX Components ~, Benzene 54 0.5 ug/L Toluene 230 0.5 us/[, Ethylbenzene 4.7 0.5 u~/L m & p Xylenes 85 0.5 ug/L o Xylenes 140 0.5 ug/L Internal Standards Results % Recovery' Benzene, fiuoro 50.0 100% Benzene-dS, chloro- 50.0 100% 1,4-Dichlorobenzene-d4 50.0 100% Surrogate Standards Methane, dibromofluoro- 98.3 197% 1,2-Dichloroethane-d4 88.6 177% · ' Toluene-d8 69.2 138% p-Bromofluorobenzene (BFB) 54.6 109% .........:::.:?:.. EPA 8260B LaboratOry Report water Sample Results in ug/c Certification # 1920 CLIENT: E2C Remediation, LLC 5300 Woodmere Drive, Suite 105 Bakersfield, CA 93313 Project ID: Mr Fast Repo~ Date" 2/28/2002 Sample ID · 2262~W-5 Analyte Result Method RL Units I 5 Oxygenates t-Butanol (TBA) Tert-Butyl Alcohol ND 2.5 u~L i 'Methyl Tert-Butyl Ether (MTBE) ND 0,5 ug/L Diisopropyl Ether (DIPE) ND 0.5 ug/L Ethyl Tert-Butyl Ether (ETBE) ND 0.5 ug/L Tert-Amyl Methyl Ether (TAME) ND 0.5 ug/L I BTEX Components I Benzene 360 0.5 ug/L Toluene 1060 0.5 ug/L Ethylbenzene ' ND 0.5 ug/L I m & p Xylenes 100 0.5 ug/L o Xylenes 620 0.5 ug/L Internal Standards Results % Recovery I Benzene, fluoro 50.0 100% Benzene-d5, chloro- 50.0 100% I 1,4-Dichlorobenzene-d4 50,0 100% Surrogate Standards m Methane, dibromofluoro- 59.4 119% 1,2-Dichloroethane-d4 59.1 118% Toluene-d8 51.4 103% mp-Bromofluorobenzene (BFB) 44.5 89% m EPA 8260B LaboratorY RePort wate SampleResults inug/L I . Certification # 1920 ' I CLIENT:' E2C Remediation, LLC 5300 Woodmere Drive, Suite 105 I Bakersfield, CA 93313 iProject ID: Mr Fast Report Date' 2/28/2002 . I Sample ID: 2263/MW-10 Analyte Result Method RL Units 5 Oxygenates t-Butanol (TBA) Tert-Butyl Alcohol ND 2.5 ug/L Methyl Tert-Butyl Ether (MTBE) ND 0.5 ug/L 'Diisopropyl Ether (DIPE) ND 0.5 ug/L Ethyl Tert-Butyl Ether (ETBE) ND 0.5 ug/L Tert-Amyl Methyl Ether (TAME) ND 0.5 ug/L BTEX Components Benzene ND 0.5 ug/L Toluene 14 0.5 ug/L Ethylbenzene 0.7 0.5 ug/L & Xylenes 2.7 0.5 ug/L m P o Xylenes 23 0.5 ug/L Internal Standards · ReSults · % Recovery Benzene, fluoro 50.0 100% Benzene-d5, chloro: 50.0 100% 1,4-Dichlorobenzene-d4 50.0 100% Surrogate Standards Methane, dibromofluoro- 64.! 128% 1,2-Dichloroethane-d4 ' 57.1 114% Toluene-d8 52,4 105% p-Bromofluorobenzene (BFB) 46.8 94% · EPA 8260B Laboratory Report water Sample Results in ug/L Certification # 1920 I CLIENT: FaC Remediation, LLC~ 5300 Woodmere Drive, Suite 105 I CA 93313 Bakersfield, I . Project ID · Mr Fast Report Date: 2/28/2002 I ID · 2264/MW-9 Sample ·~ Analyte Result Method RL Units I 5 Oxygenates t-Butanol (TBA) Tert-Butyl Alcohol ND 2.5 ug/L I Methyl Tert-Butyl Ether (MTBE) ND , 0.5 ug~ Diisopropyl Ether (DIPE) ND 0.5 u~L Ethyl Tert-Butyl Ether (ETBE) iXlD 0.5 ug/L I Tert-Amyl Methyl Ether (TAME) ND 0.5 ug/L BTEX Components I Benzene 7.3 0.5 ug/L Toluene 10 0.5 ug/L Ethylbenzene ND 0.5 ug/L I m & ND 0.5 ug/L P Xylenes o Xylenes -79 0.5 ug/L I Internal Standards Results % Recovery Benzene, fluoro 50.0 100% Benzene-d5, chloro- 50.0 100% I 1,4-Dichlorobenzene-d4 50.0 100% Surrogate Standards m Methane, dibromofluoro- 62.8 126% 1,2-Dichloroethane-d4 56.9 114% Toluene-d8 . 50.4 10:1.% m p-Bromofluorobenzene (BFB) 46.7 93% EPA 8260B Laboratory Report Water Sample Results in ug/L Certification # 1920 CLIENT: F_~C Remediati°n, LLC 5300 Woodmere Drive, Suite 105 Bakersfield, CA 93313 Project ID' Mr Fast Report Date · 2/28/2002 Sample ID · 2265/MW-14 I Analyte Result Method RL Units I 5 Oxygenates t-Butanol (TBA) Tert-Butyl Alcohol - 100 2.5 ug/L I Methyl Tert-BUtyl Ether (MTBE) ND 0,5 ug/L Diisopropyl Ether (DIPE) ND 0.5 Ethyl Tert-Butyl Ether (ETBE) ND 0.5 ug/L I Tert-Amyl Methyl Ether (TAME) ND 0.5 ug/L BTEX Components I Benzene 2 0.5. ug/L Toluene 8.2 0.5 ug/L Ethylbenzene 3? 0.5 ug/L I m p Xylenes , & 13 0,5 ug/L o Xylenes ]8 0.5 ug/L I I Znternai Standards Results % Recovery Benzene, fluoro 50.0 :1.00% Benzene-d5, chloro- 50.0 100% m 1,4-Dichlorobenzene-d4 50.0 100% Surrogate Standards m Methane, dibromofluoro- 6:2.5 125% 1,2-Dichloroethane-d4 58.1 116% Toluene-d8 48,9 98% I p-Bromofluorobenzene (BFB) · 47.1 94% EPA 8260BLaboratOry RepOrt Water Sample Results in ug/L I Certification # 1D20 · ... I CLIENT: E2C Remediation, LLC 5300 Woodmere Drive, Suite 105 I Bakersfield, CA 93313 i Project ID' Mr Fast Report Date: 2/28/2002 Sample ID · 2266/MW-6 I Analyte Result Method RL Units I 5 Oxygenates t-Butanol (TBA) Tert-Butyl Alcohol ND 2.5 ug/L I Methyl Tert-Butyl Ether (MTBE) ND 0.5 ug/L DiisoproPyl Ether (DIPE) ND 0.5 ug/L Ethyl Tert-Butyl Ether (ETBE) ND 0.5 uo~L I Tert-Amyl Methyl Ether (TAME) ND 0.5 u*d'L BTEX Components I Benzene ND 0.5 ug/L Toluene 5.8 0.5 ug/L Ethylbenzene . ND 0.5 ug/L I & Xylenes ND 0.5 ug/L m P o Xylenes 25 0.5 ug/L 1 I Internal Standards Results % RecoVery Benzene, fluoro 50.0 100% Benzene-d5, chloro- 50.0 100% I 1,4-Dichlorobenzene-d4 50.0 100% Surrogate Standards I Methane, dibromofluoro- 58.4 117% 1,2-Dichloroethane-d4 56.2 112% '- -- Toluene-d8 46.2 92% I p-Bromofluorobenzene (BFB) 48.1 96% · . ._ . . ..?.~.~?'..,~?,~ ~ . . ., ~.~ ~>~.~.,~...~,.~.~:',~., .. EPA 8260B LaboratOw RepO ' Wa r sample R~ui~ in ug/L I Ge~ification ~ ~ ~20 .... I CLIENT: ~C Remediafion, LLC _ 5300 Woodmere Ddve, Suite 105 Bakemfield,~ cA 93313 Project ID · Mr Fast · Repo~ Dae - 2/28/2002 I Staple ID · 2267~W-17S Analyte Result Method RL Units I 5 Oxygenates t-Butanol (TBA) Tert-Butyl Alcohol HD 2.5 ug/L I Methyl T.ert-Butyl Ether (MTBE) HD 0.5 ug/L Diisopropyl Ether (DIPE) ND .0.5 ug/L Ethyl Tert-Butyl Ether (ETBE) ND ' 0.5 ug/L I Tert-Amyl Methyl Ether (TAME) ND 0.5 ug/L BTEX Components I Benzene ND 0.5 ug/L Toluene , ND 0.5 ug/L i Ethylbenzene ND 0.5 ug/L m & p Xylenes ND 0.5 ug/L o Xylenes ~ 0.5 ug/L I Internal standards Resull:s Olo Recovery Benzene, fluoro 50.0 100% Benzene-dS, chloro- 50.0 100% I 1,4-Dichlorobenzene-d4 50.0 100% Surrogate Standards I Methane, dibromofluoro- 62.5 :[25% 1,2-Dichloroethane-d4 58.0 1:[6% Toluene-d8 47.8 96% I p-Bromofluorobenzene (BFB) 50,5 :[0:[% . - ...:.-: ., · .~. ;. · ~.. . . _ .':-.. EPA 8260B Laborat° Repod'" Water sample R~ui~ in ug/L Cedification ~ 1920- .. CLIENT: E2C Remediati°n, LLC 5300 Woodmere Ddve, Suite 105 Bakemfield, CA 93313 Project ID' ~r Fa~t, Repo~ Date: 2/28/2002 Staple ID' 2268~W-llR Analyte Result Method RL Units 5 Oxygenates t-Butanol (TBA) Tert-Butyl Alcohol ND 2.5 ug/L Methyl Tert-Butyl Ether (MTBE) ND 0.5 ug/L Diisopropyl Ether (DIPE) ND 0.5 ug/L Ethyl Tert-Butyl Ether (ETBE) ND 0.5 ug/L Tert-Amyl Methyl Ether (TAME) ND 0.5 ug/L BTEX Components Benzene 140 0.5 ug/L Toluene 1560 0.5 ug/L Ethyl benzene 1090 0.5 ugn.~ & 660 0.5 ug/L P Xylen.es o Xylenes 1780 0.5 ug/L Internal Standards Results % Recovery Benzene, fluoro 50.0 100% Benzene-dS, chloro- 50.0 100% 1,4-Dichlorobenzene-d4 50.0 100% Surrogate Standards Methane, dibromofluoro- 59.1 118% 1,2-Dichloroethane-d4 72.3 145% Toluene-d8 54,2 108% (BFB) 49,0 98% p-Bromofluorobenzene ' FPA 8260B Laboratory Report' ' water sample Resultsin . CLIENT. E2C Remediation, LLC ' 5300 Woodmere Drive, Suite 105 Bakersfield, CA 93313 Project ID: Mr Fast Report Date: 2/28/2002 Sample : . .. ID 2269/MW-18 Analyte Result Method RL Units 5 Oxygenates t-Butanol (TBA) Tert-Butyl Alcohol ND 2.5 ug/L Methyl Tert-Butyl Ether (MTBE) ND 0.5 ug/L Diisopropyl Ether (D/PE) ND 0.5 ug/L Ethyl Tert-Butyl Ether (ETBE) ND 0.5 ug/L Tert-Amyl Methyl Ether (TAME) ND, 0.5 ug/L BTEX Components Benzene . 140 0.5 ug/L Toluene 1320 0.5 ug/L Ethyl benzene 1063 0.5 ug/L & 670 0.5 ug/L m P Xylenes o Xylenes lg20 0.5 , ug/L Internal Standards ' Results % Recovery Benzene, fluoro 50.0 100% Benzene-d5, chloro- 50.0 100% 1,4-Dichlorobenzene-d4 50.0 100% Surrogate Standards Methane, dibromofluoro- 56.0 112% ' 1,2-Dichloroethane-d4 71.4 '143% Toluene-d8 55.3 111% p-BromofluorobenZene (BFB) 49.0 98% Haicy t ri~s, on Labora o]:nc... EPA 8260B Laboratory Report water sample Results in ug/L Certification # 192.0 . · - · CLIENT: EzC Remediation, LLC 5300 Wo°dmere Drive, Suite 105 Bakersfield, CA 93313 Project ID' Mr Fast Report Date · 2/28/2002 Sample ID: 2270/MW-8 I Analyte ResUlt Method RL Units I 5 Oxygenates t-Butanol (TBA) Tert-Butyl Alcohol ND 2.5 ug/L I ' Methyl Tert-Butyl Ether (MTBE) ND 0.5 ug/L Diisopropyl Ether (D/PE) ND 0.5 ug/L Ethyl Tert-Butyl Ether (ETBE) ND 0.5 ug/L I Tert-Amyl Methyl Ether (TAME) ND 0.5 ug/L . BTEX Components I Benzene 0.6 0.5 ug/L Toluene , 1100 0.5 ug/L i Ethylbenzene ]410 0.5 ug/~ m'& p Xylenes 1370 0.5 ug/L o Xylenes 1900 0.5 ug/L I I Internal Standards Result~ % R~:ove~ Benzene, fluoro 50.0 100% Benzene-dS, chloro- 50.0 100% I 1,4-Dichlorobenzene-d4 50.0 100% Surrogate Standards I Methane, dibromofluoro- 62.9 126% 1,2-Dichloroethane-d4 76.6 153% Toluene-cl8 57.4 115% I p-Bromofluorobenzene (BFB) 51.1 102% i ~. · .. -'."- '~.. " ....:. ':.,::~i::ii~.. Project Number 1801BK03 March 29. 2002 APPENDIX C Survey Plot of Well Locations E¢C Remediation, LLC Appendix C ,' ':':' '' 0 ~ UONITORINO ~LL o ~ w~o~ ~x~c~o~ m ONCE NOR~ SIDE OF BRUNDAGE LANE AT KERN I~D CANAL UNDER E~A~ON = 396.~1' ~W-~R 2316512.15 ~260892.96 55~1'~ MW-12 2316509,~S260813.1~ 35~1'1 MW-13 Z316~7.26'6260913.41 35~1'1 MW-14 Z316~5.64626~08.2235~1'1 MW-lSD23162~.616260872.07 35~1't -- MW-1552316251.20 6260867.23 35~l'1 MW-16 ~2316249,99 6260.965,83 ~5~1'1 MW-17DZ3162~,586261069.01 35~1'1 H;-. ~ .' *,'¥..~,* . ~'., *~...: :-... MW-17S~2316248.556261062.99 ~5~1'1 · . · ..... ..:..: .......... IIll I I'" ' ~ "' ' · .--'.:, '.:, . . -.. I . . ' ' ~'..'..;,'". ' ..... : " :'~' ~.';::"r, '~-.. '~. : _:' ' '"'_' ' '~""' ...... ""' ": " " . ..~".'.'~
