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HomeMy WebLinkAboutUST-REPORT 6/4/1997TIME CHARGED BUSINESS/T)EAPRTMENW NAMZ: ADDRESS: PRO.I'ECT DESCRIPTION: PROiI'ECT NUMBER: ~ E'~l DATE: NAME: TIME CHGD: COMMENWS: DATE: HAZAI~OUS MATERIAI S TIME CHARGED BUSINESSfDEAPRTMENT NAME: ADDRESS: PROJECT DESCRIPTION: PROJECT NUMBER: ax73 mst DATE: NAME: ~zg~d 77. 60 CHGD: COMMENTS: /P'-q' q5 PROJECT COMPLETION: DATE: BAKERSFIELD FIRE DEPARTMENT RI~ CHIEF MICHAEL R. KELLY ADMINISTRATIVE SERVICES 2101 'H" Street Bakersfield, CA 93301 (805) 326-3941 FAX (805) 395-1349 SUPPRESSION SERVICES 2101 'H' Street Bakersfield, CA 93301 (805) 326-3941 FAX (805) 395-1349 PREVENTION SERVICES 1715 Chester Ave. Bakersfield, CA 93301 (805) 326-3951 FAX (80,5] 326-0,576 ENVIRONMENTAL SERVICB 1715 Chester Ave. Bakersfield, CA 93301 (80.5) 326-3979 FAX (805) 3260576 TRAINING DIVISION 5642 Victor Street Bakersfield, CA 93308 (805) 399-4697 FAX (805) 399-5763 February 28, 1997 Mr. John McCauley 14512 Arrowhead Canyon Road Bakersfield, CA 93306-9643 RE: California Sheet Metal,~/]~. ~---~l~-Strcct--# Dear Mr. McCauley: This is to inform you that this department has reviewed the result of the closure report dated December 24, 1996 associated with the underground tank removal. Based upon the information provided, this department has determined that appropriate response actions have been completed, that acceptable remediation practices were implemented, and that, at this time, no further investigation, remedial or removal action or monitoring is required at the above stated address. Nothing in this determination shall constitute or be construed as a satisfaction or release from liability for any conditions or claims arising as a result of past, cra'rent, or furore operations at this location. Nothing in this determination is intended or shall be construed to limit the rights of any parties with respect to claims arising out of or relating to deposit or disposal at any other location of substances removed from the site. Nothing in this determination is intended or shall be construed to limit or preclude the Regional Water Quality Control Board or any other agency from taking any further enforcement actions. This letter does not relieve the tank owner of any responsibilities mandated under the California Health and Safety Code and California Water Code if existing, additional, or previously unidentified contamination at the site causes or threatens to cause pollution or nuisance or is found to pose a threat to public health or water quality. Changes in land use many require further assessment and mitigation. If you have any questions regarding this matter, please contact me at (805) 326-3979. Sincerely, Howard H. Wines, m H~Tardous Materials Technician cc: Ralph Huey Kathy Gill, RWQCB Cal/EPA State Water Resources Control Board Division of Clean Water Programs Mailing Address: P.O. Box 944212 Sacramento, CA 94244-2120 2014 T Street, Suite 130 Sacramento, CA 95814 (916) 22%2784 FAX (916) 227-4530 World Wide http://www, swrcb, ca. gov/--cwphome/ fundhom¢.htm March 5, 1997 Pete Wilson Governor Mr. Howard Wines City of Bakersfield Fire Depaxtment 1715 Chester Avenue, 3rd Floor Bakersfield, CA 93301 Dear Mr. Wines: UNDERGROUND STORAGE TANK CLEANUP FUND PROGRAM; LIST OF POSSIBLE CLOSED SITES Please indicate below, at the right of the site address, whether the sites have received closure from your office. Claim No. Site address Closure _eranted? 11591 10391 10536 9910 8443 802 101 19th Street, Bakersfield 1414 E. California Ave, Bakersfield 1501 E. 19th Street, Bakersfield 300 Baker Street, Bakersfield 601 Brundage Lane, Bakersfield 601 Eureka Street, Bakersfield If you would like to fax your request, our fax number is (916) 227-4530. Sincerely, ~ i Underground Storage Tank Cleanup Fund cc: Nancy Camacho, Closure Unit-USTCF Recycled Paper Our mission is to preserve and enhance the quality of California's water resources, and ensure their proper allocation and efficient use for the benefit of present and future generations. Attachment 1 Underground Storage Tank Cleanup CASE REVIEW FORM Claim #802 [Date:l/28/97 j Lus s FileNo.: 5T15000513 ~lNi famo~rAn4~"S h e e t Metal I ReS~o~bnle ~. ~ C au 1 e Y 601 Eureka Street J Deanna J.MCcauley !. CASE INFORMATION (N/A - Not Applicable) IOversighrAgen~: City of Bakersfield J Tclephofle No.: IBkSfid. ~A ' 93306~-~3 Tank No. Size in Gallons Contents Closed In-Pl~ Da~ -- I 550 Gasoline Removed 12-17~9~ 2 N/A 3 N/A II. SIT~ CItARACTERIZATION INFORMATION (GW - groundwater) OWBaaln:Tulare Lake (5D) J fici.,u=: MUN Distance m Nearest Municipal Supply Well: 2/10 Mile to NE of Site GW Highest Depth: J GW Lowest Depth: Soil Type: Silty-sands, Sandy-silts J Depth to Drinking Water Aquif~: 175 ft Distan~BetweenKnownSImJlowGWC~tamin~on& Aqui~c N/A - No shallow GW impacted, soil impacted to 65 ft. Well Sc~en Interval: jFlm~ Dir~-mfion: Maximum Depth Sampled: 90 ft. " ltl MAXIMUM DOCUMENTED CONTAMINANT CONCgNTRAT[ONS - Initial and Latest . = Not Reported, ND ,-Non-Detect Contaminant Soil (mc/kg) W--ret (up/L) Contaminant Soil (ms/kg) Water (up/L) 92 .... TPH (Oas) 30,000 5,900 N/A J N/A Ethylbcnz~n¢ 800 340 N/A N/A TPH (Diesel) N/A N/A N/A j Xylcncs 4,300 320 N/A N/A Benzene 1,000 14 N/A i N/A MTBE ........ I N/A .Omer Lead 39 - - N/A N/A Toluene 3,400 200 N/A IV. SOIL RKMEDLATION [Mcth°d~hermal Oxidizer In-Situ Vapor Extraction JDurationofRemediation: 15 months J V. GROUNDWATER REMEDIATION VI. FREE PRODUCT IWas Free Product Encountered? YES [] NO ~ When Was Free Product Recovem/Project Completed? N/A IHas Free Product Becn Totally Recovered? YES [] N/A NOJ--J VII. RECOMMENDED ACTION Soil Closure Only? YES r~ NO [~] J Case Closure? YES ['X'] NO[~] J Solvent Case? Additional Action Required (i.¢.. additional site assessment, rcmediation, monitoring): Removal of remediation equipment and closure of vapor extraction wells. YES [] NO [] VIU..JUSTIFICATION FOR RECOMMENDED ACTION rRBCA Tier 2 risk evaluation (pursuant to ASTM standard E-1739) quantifies' that the remnant concentrations of benzene do not exceed the levels appropriate for the current commercial use of the property and do not present an excessive risk of exposure to the adjacent residential properties. HOLGUIN, FAHAN & INC. ~ ENVIRONMENTAL MANAGEMENT CONSULTANTS 143 South Figueroa Street · Venlura, California 93001 (805) 652-0219 · FAX (805) 652-0793 853 West 17th Street * Costa Mesa, California 92627 (714) 642-2660 · FAX (714) 642-2544 3157 Pegasus Drive · Bakersfield, California 93308 (805) 391-0517 · FAX (805) 391-0826 April 9, 1997 Mr. Clifton L. Calderwood San Joaquin Valley Unified Air Pollution Control Dlstdct Southern Region 2700 "M" Street, Suite 275 Bakersfield, California 93301 Subject: REMOVAL OF SOIL VAPOR EXTRACTION EQUIPMENT AT THE CALIFORNIA SHEET METAL PROPERTY LOCATED AT 601 EUREKA STREET BAKERSFIELD, CALIFORNIA (PTO PERMIT #S-2660-1-0) Dear Mr. Calderwood: Holguin, Fahan & Associates, Inc., (HFA) has prepared this letter to inform the San Joaquin Valley Unified Air Pollution Control District - Southern Region of the completion of the in-situ remediati°n of hydrocarbon-containing soils at the above referenced site and the subsequent removal of the vapor extraction system (VES) utilizing a King, Buck/Hasstech, Inc., 150-scfm, direct-fired thermal oxidation unit. Due to a significant decrease in the concentration of hydrocarbons extracted from the subsurface, HFA conducted a soils Investigation In September 1996, to assess the residual concentration of gasoline hydrocarbons in the subsurface. The results of the investigation indicate residual concentrations of gasoline hydrocarbons less than the State Water Resources Control Boards recommended guidelines. Given the results of the investigation, the VES unit was removed from the site, and the City of Bakersfield Fire Department Hazardous Materials Division (BFDHMD) issued site closure. Given the removal of the unit from the site, the PTO will no longer be required. If you have any questions regarding this repod or the Information contained herein, please contact me at (805) 3914517 or at e-mall address Mark_Magargee@hfa.com. Respectfully submitted, Mark R. Magargee, CHG, RG Senior Hydrogeologist Holguin, Fahan & Associates, Inc. MRM:rri cc: Mr. John M. and Mrs. Deanna J. McCauley Mr. Howard H. Wines, Ill, BFDHMD Mr. Patrick C. Carrlck, Griffin · Carrick ENVIRONMENTAL PLANNERS · SCIENTISTS · GEOLOGISTS AND ENGINEERS (:onlan~inated Site Assessalenls * Real Eslale Audits * $i1(' Remedialion · tlazardous waste Managemenl HOLGtTIN, FAHAN &ASSOCIA I' , INC. ~, ENVIRONMENTAL MANAGEMENT CONSULTANTS 143 South Figueroa Street · Ventura, California 93001 (805) 652-0219 · FAX (805) 652-0793 853 West 17th Street · Costa Mesa, California 92627 (714) 642-2660 · FAX (714) 642-2544 3157 Pegasus Drive · Bakersfield, California 93308 (805) 391-0517 · FAX (805) 391-0826 May 16, 1997 Mr. John M. and Mrs. Deanna J. McCauley California Sheet Metal In Care of Mr. Patrick C. Carrick Griffin · Carrlck Attorneys at Law Post Office Box, 2348 Bakersfield, California 93303-2348 Subject: SITE CLOSURE REPORT FOR CALIFORNIA SHEET METAL 601 EUREKA STREET, BAKERSFIELD, CALIFORNIA Dear Mr. and Mrs. McCauley: Holguln, Fahan & Associates, Inc., (HFA) is pleased to present the following Site Closure Report on completion of remedial actions at the California Sheet Metal property .located at 601 Eureka Street In the city of Bakersfield, Kern County, California (see Figure 1 - Site Location Map). Remedial activities at the site have Included the operation of a VES under San Joaquln Valley Unified Air Pollution Control District - Southern.Region PTO #S-2660-1-0. The remedial activities were required by the City of Bakersfield Fire Department Hazardous Materials Division UST Local Oversight Program (BFDHMD UST LOP) as a result of the discovery of gasoline-containing soils surrounding the former gasoline UST at the site. SITEBACKGROUND The site previously contained a single 550-gallon gasoline UST. California ~Sheet Metal contracted CALPI, Inc., to remove the UST on December 17, 1991. Gasoline hydrocarbon concentrations were detected In the soil samples (S-1 and S-2) collected from beneath the UST0 On March 19, 1992, six soil borings (B-1 through B-6) were drilled at the site by Wilson & Associates, Inc., and on March 8, 1993, three additional soil borings (B-7 through B-9) were drilled at the site by Piwarea Engineering, Inc. The soils investigations indicated TPH as gasoline concentrations to depths less than 75 fbg and less than 45 feet laterally from the former UST location (see Attachment 1 for a summary of previous work). On January 17 and 18, 1994, HFA drilled and installed six vapor extraction wells (VW-1 through VW-6). HFA connected the wells with 3-inch-diameter piping to a central manlfotd (see Figure 2- Plot Plan Showing VES). On November 28, 1994, HFA acquired ENVIRONMENTAL PLANNERS · SCIENTISTS · GEOLOGISTS AND ENGINEERS Contaminated Site Assessments * Real Estate Audits * Site Remediation * Hazardous Waste Management HOLGUIN, FAHAN & A.SS(2g2IATES, INC. ENVIRONMENTAL MANAGEMENT CONSULTANTS Mr. John M. Mrs. Deanna J. McCauley California Sheet Metal May 16, 1997 - Page 2 ATC Permit #S-2660-1-0 for a VES utilizing a King, Buck/Hasstech, Inc., 150-scfm, direct-fired thermal oxidizer for the in-situ vapor extraction of volatile hydrocarbons in the soils at the site. Subsequently, the system was delivered and installed at the site (see Figure 2 and Figure 3 - VES Schematic Diagram). On July 17, 1995, HFA conducted a source test of the treatment unit In compliance with the requirements of the ATC permit. Based on the vapor sampling and laboratory analytical results, the efficiency of the direct-fired, thermal oxidation system was determined to be greater than 99.8 percent; the maximum VOC emission was 1.4 ppmv; and the benzene emission was less than 0.03 ppmv. Therefore, the source test demonstrated compliance with the conditions of the ATC permit (see Attachment 1). HFA subsequently requested that the ATC permit be upgraded to a PTO. During the first 4 weeks of operation, high VOC concentrations and oxygen deficiency in the soil caused the unit to frequently shut down. During this time, vapor wells VW-1 and VW-2 were used as extraction wells while vapor wells VW-3 through VW-6 were used as air inlet wells, and the dilution air valve was completely open. As soil conditions improved, dilution air was slowly decreased until no dilution air was required, and well VW-3 was brought on line as an extraction · well. HFA has operated the unit 24 hours per day since August 14, 1995, with only short periods of Inactivity for maintenance, draining of the knockout pot, and a few occurrences when the system has shut down. On March 6, 1996, June 27, 1996, and September 24, 1996, HFA collected influent and effluent vapor samples, which were analyzed for TPH as gasoline and BTEX. The inlet vapor concentration was 1,900 ppmv during the March 6, 1996, sampling event; 2,900 ppmv during the June 27, 1996, sampling event; and 850 ppmv during the September 24, 1996, sampling event (see Attachment 1). As of the end of the third quarter of 1996, HFA estimated., the mass of gasoline hydrocarbons extracted from the subsurface since start-up to be .approximately 13,370 pounds, which is equivalent to approximately 2,089 gallons of gasoline. However, with the diminished volume of hydrocarbons in the subsurface resulting in frequent system shutdowns, only 733 pounds of hydrocarbons was removed during the third quarter of 1996 (see Table 1 -Summary of VES Monitoring Data). Therefore, on September 4, 1996, HFA drilled three soil borings (B-10 through B-12) in and around the location of the former USTs to assess the progress of achieving the BFDHMD UST LOP cleanup levels at the site (see Figure 2 for verification soil boring locations). Soil boring B-10 was drilled to a depth of 91 fbg through the location of the former UST, and soil borings B-11 and B-12 were drilled to a depth of 51 fbg at locations laterally from the former UST. Laboratory analysis of HOLGUIN, FAHAN & ASSOCIATES, INC. ENVIRONMENTAL MANAGEMENT CONSULTANTS Mr. John M. Mrs. Deanna J. McCauley California Sheet Metal May 16, 1997 - Page 3 soil samples collected from soil boring B-10 indicated detectable TPH as gasoline and BTEX concentrations in the Interval ranging in depth from 15 to 65 fbg, with benzene concentrations detected at a maximum concentration of 34 mg/kg In the soil sample collected from a depth of 65 fbg. Laboratory analysis of soil samples indicated detectable TPH as gasoline concentrations in the soil sample collected from a depth of 30 fbg In soil boring B-11 and In the soil sample collected from a depth of 25 fbg In soll boring B-12 (see Attachment 1). One result of the progress soils assessment is that a significant reduction In the concentration of gasoline hydrocarbons from the original maximum TPH as gasoline and benzene concentrations of 30,000 mg/kg and 1,000 mg/kg, respectively, has been achieved. Another result is that the lateral areas of the original vadose zone plume indicate only residual gasoline hydrocarbon concentrations In the soil compared to the original, maximum lateral TPH as gasoline and benzene concentrations of 7,000 mg/kg and 42 mg/kg, respectively. However, significant concentrations of gasoline hydrocarbons remain in the central area of the vadose zone plume, with a maximum TPH as gasoline concentration of 5,900 mg/kg and a maximum benzene concentration of 34 mg/kg. Given the results of the remediation progress soils assessment, the BFDHMD UST LOP, In Its letter dated October 23, i996, requested that a risk evaluation of potential exposure of the remaining gasoline hydrocarbons In the subsurface to potential receptors be performed prior to consideration of the site for closure. HFA prepared a risk evaluation, dated December 24, 1996, which utilized the previously obtained site assessment and remediatton data along with ASTM Designation: E-1739 RBCA Tier 2 default and site-specific input parameters to perform the analysis. The results of the risk evaluation are that active remediation has been effective In removing gasoline hydrocarbons from the subsurface at the site and would continue to be effective In removing the remnant concentrations in the soil. However, if the BFDHMD UST LOP approved of the discontinuation of active remediation activities, then the con~,lusion of the RBCA Tier 2 risk evaluation would be that the remnant concentrations of gasoline hydrocarbons within the soils at the site do not exceed the levels appropriate for the current commercial use of the property and do not present an excessive risk of exposure to the adjacent residence. The BFDHMD UST LOP, in its letter dated March 4, 1997, concurred with the conclusions of the risk evaluation and issued a no further action determination for the site. YES REPORT FOR THE FIRST QUARTER OF 1997 During the first quarter of 1997, inlet vapor concentrations were reduced from a maximum concentration of 790 ppmv to a minimum concentration of 510 ppmv (see Figure 4 - Influent and HOLGUIN, FAHAN & ASSOC~T~, INC. ENVIRONMENTAL MANAGEMENT CONSULTANTS Mr. John M. Mrs. Deanna J. McCauley California Sheet Metal May 16, 1997 - Page4 Effluent TPH Concentrations and Table 1). The system shutdowns, which occurred frequently during the first quarter of 1997, appear to be related to the diminished volume of gasoline hydrocarbons remaining in the subsurface, and the permeability of the soils that contain the greatest concentrations of gasoline hydrocarbons. After a shutdown occurs, the VOCs recharge Into the more permeable sediments. Initially, after the system Is restarted, the concentrations of VOCs extracted are relatively high. However, the concentrations of VOCs extracted drops off rapidly until shutdown again occurs. This cycle was repeated frequently during the tlrst quarter of 1997. The Inlet soil vapor flow rate has been maintained near the maximum stated in the ATC permit and ranges from 60 to 80 scfm. HFA estimates the mass of gasoline hydrocarbons extracted from the subsurface since start-up to be approximately 14,310 pounds, which is equivalent to approximately 2,236 gallons of gasoline (see Figure § - Cumulative Extraction Curve and Table 1). However, with the diminished volume of gasoline hydrocarbons in the subsurface, only 439 pounds of gasoline hydrocarbons was removed during the first quarter of 1997. SYSTEM SHUT DOWN AND REMOVAL On March 4, 1997, HFA shut down the thermal oxidation unit, disconnected the electrical and natural gas hook-ups, and removed the unit from the site. On April 2, 1997, HFA abandoned the VES wells by drilling out the well casing, filter pack, and cement grout using a hollow-stem auger drill rig equipped with 8-inch-diameter augers. The wells were backfilled with cement grout to surface grade, and the underground vapor extraction piping was abandoned in place by pressure grouting with cement grout. On May 5, 1997, approximately 12 tons of drill-cutting soils accumulated during the previous site Investigations was transported by Kern Environmental Services under non-hazardous waste manifest, to the McKittrick Waste Treat.,rnent Site in McKittrick, California, for recycling into road base materials (see Attachment 2 for the non-hazardous waste manifest). Subsequently, the 55-gallon, DOT-approved drums used to store the drill cuftings were transported to Golden State Metals in Bakersfield, California, for recycling. HOLGUIN, FAHAN & ASSOCIATES, INC. ENVIRONMENTAL MANAGEMENT CONSULTANTS Mr. John M. al'~l Mrs. Deanna J. McCauley California Sheet Metal May 16, 1997 - Page 5 Holguin, Fahan & Associates, Inc., trusts that you will find this Site Closure Report to your satisfaction. If you have any questions or require additional Information, please contact Mr. Mark Magargee at (805] 391-0517 or at e-mail address Mark_Magargee@hfa.com. Respectfully submitted, Kenneth J. Mitchell, REA Associate Geologist Holguin, Fahan & Associates, Inc. MRM:rri Enclosures: Figure 1 Figure 2 Figure 3 Figure 4 - Figure 5 - Table 1 - Attachment 1 Attachment 2 Site Location Map Plot Plan Showing VES VES Schematic Diagram Influent and Effluent TPH Concentrations Cumulative Extraction Curve Summary of VES Monitoring Data - Summary of Previous Work - Non-Hazardous Waste Manifest Mark R. Maga g ,CHG, Senior Hydrogeologist Holguin, Fahan & Associates, Inc. cc: Mr. Howard H. Wines, III, BFDHMD UST LOP Mr. Patrick C. Carrick, Griffin · Carrick HOLGUIN, FAHAN & ASSOCIATES, INC. ENVIRONMENTAL MANAGEMENT CONSULTANTS Mr, John Mrs. Deanna J, McCauley California Sheet Metal May 16. 1997 - Page 6 '~ ~,'z' ~il;~,~' '* ~ ; ' ' ~';~ ' ~.'~t,- ~,~'~ ~'~t~ ~. ~:'~ ] ~ .? ,~.;~,~,~ 4 ;- ~ t'X~ COUNTY LEGEND MR. JOHN M. AND MRs. D~NNA J. M~AULEY OALIFORNIA SHEET METAL [ ~ , i f ~ ~ ] [ i ]~ 601 EURE~ S~EET o ~,~ ~,~ %~ 4,~ ~,~ ~ET ~ BAKERSFIELD, OALIFORNIA H H H I I I o o.~ ~ ~o~n FIGURE 1 - ~1~ L~A~ON MAP HOLGUIN, FAHAN ASSOCIATES, INC. ENVIRONMENTAL MANAGEMENT CONSULTANTS Mr. John M,d~d Mrs, Deanna J, McCauley California Sheet Metal May 16, 1997 - Page 7 EUREKA STREET SIDEWALK --- G4r~..~ CHAIN-LINK FENCE o3 CALIFORNIA Z SHEET METAL CC BUILDING v CONCRETE SLAB ' LIMIT OF CANOPY ~ GASOLINE-CONTAINING ~ SOILS ! \ VW-2 {~)v~/v:3 I_ ' % "~ '~,i 'T' :' ~...L/M.I_T..O.F. ..... ,-- ........... I____~ ............ ~.~_L' _~r~l~_~..., TANK EXCAVATION VES: __~ MANIFOLD LE IN FEET ~ CHAIN-LINK FENCE 0 10 20 ALLEY LEGEND MR. JOHN M. AND MRS. DEANNA J. McCAULEY CALIFORNIA SHEET METAL ~ VAPOR EXTRACTION WELL 601 EUREKA STREET "~- VES PIPING BAKERSFIELD, CALIFORNIA ~' FIGURE 2 - PLOT PLAN SHOWING VES ~, VERIFICATION SOIL BORING HOLGUIN, FAHAN & ASSOCIATES, INC. REVISION DATE: MAY 14, 1997: RRI HOLGUIN, FAHAN & ASSOC TB, INC. ENVIRONMENTAL MANAGEMENT CONSULTANTS Mr. John M, Mrs. Deanna J. McCauley California Sheet Metal May 16, 1997 - Page 8 < 150 ,' VW-1 VW-2 VW-3 VW-4 VW-5 VW-6 -X ATMOSPHERE KNOCK-OUT DRUM INFLUENT MONITORING POINT _l WITH <150 scfm BLOWER SILENCER SUPPLEMENTAL FUEL EFFLUENT MONITORING POINT THERMAL/ CATALYTIC OXIDIZER NOT TO SCALE X LEGEND PRESSURE OR VACUUM GAUGE VALVE FLOW GAUGE SAMPLE TAP REVISION DATE: MAY 14, 1997: RRI MR. JOHN M. AND MRS. DEANNA J. McCAULEY CALIFORNIA SHEET METAL 601 EUREKA STREET BAKERSFIELD, CALIFORNIA FIGURE 3 - VES SCHEMATIC DIAGRAM HOLGUIN, FAHAN & ASSOCIATES, INC. HOLGUIN, FAHAN & ASSOCIATES, INC. ENVIRONMENTAL MANAGEMENT CONSULTANTS Mr. John M. Mrs. Deanna J. McCauley California Sheet Metal May 16, 1997 - Page 9 FIGURE 4 - INFLUENT AND EFFLUENT TPH CONCENTRATIONS t- O 10,000 1,000 100 10 0.1 TPH In 0 5 10 15 20 25 30 35 Cumulative Operating Weeks 4O HOLGUIN, FAHAN & ASSOC¼T~, INC. ENVIRONMENTAL MANAGEMENT CONSULTANTS Mr. John M, a'1~d Mrs. Deanna J, McCauley California Sheet Metal May 16, 1997 - Page 10 FIGURE 5 - CUMULATIVE EXTRACTION CURVE 15,000 10,000 5,000 0 0 5 10 15 20 25 30 35 Cumulative Operating Weeks 40 TABLE 1. SUMMARY OF VES MONITORING DATA CALIFORNIA SHEET METAL, BAKERSFIELD, CALIFORNIA Outlet Cumulative Cumulative Cumulative Temper* Inlet Well Well Well Well Well Well Dilution TPH Reduction Cumulative Cumulative Date Calendar Operatin! Operating Operating ature Flow VW-1 VW-2 VW-3 WN-4 V~N-5 VW-6 air TPH In Out Efficiency lbs/Ho,Jr Totel Lbs Lbs. Gallons Monitored Days Hours Hours Days (°F) (scfm) (valve) (valve) (valve) (valve) (valve) (valve) (valve) (ppmv) (ppmv) (>9(:P/e) Extracted Extracted Extracted Extracted 7-12-95 1 0.00 0.00 0 1,500 100 O · · · · · O 2,000 I 100% 3.17 0.00 0 0 7-13-95 1 5.50 5.5 0 1,500 100 O · ' · · · · O 2,000 I 100% 3.17 17.41 17 3 7-14-95 2 3.80 9.3 0 1,480 95 O · · · · · O 2,000 I 100% 3.01 12.03 29 5 7.17-95 5 3.80 13.1 1 1,510 100 O PO · · · · O 1,635 1 100% 2.59 11.43 41 6 7-21-95 9 5.40 18.5 1 1,480 110 O O · · · · O 1,885 1 100% 3.28 13.98 55 9 7-24-95 12 1.90 20.4 1 1,580 120 O O · · · · O 1,790 I 100% 3.40 6.24 61 10 7-25-95 13 3.80 24.2 I 1,580 120 O O · · · · O 1,810 1 100% 3.44 12.92 74 12 7-26-95 14 2.70 26.9 1 1,600 120 O O · · · · O 1,830 1 100% 3.48 9.28 83 13 7-27-95 15 1.10 28.0 1 1,500 104 O O · · · · O 1,640 I 10(P/o 2.70 3.82 87 14 7-27-95 15 3.50 31.5 1 1,500 102 O PO · · · · O 1,965 I 100% 3.17 9.45 97 15 8-4-95 23 1.30 32.8 1 1,600 70 PO · · · · · O 811 1 100% 0.90 4.12 101 16 8-7-95 26 74.80 107.6 4 1,500 66 PO · · · · · O 985 1 100% 1.03 67.23 168 26 8-14-95 33 166.90 274.5 11 1,600 70 PO · · · · · O 1,100 I 100% 1.22 171.77 340 53 8-22-95 41 163.30 437.8 18 1,500 100 O O · · · · O 1,950 1 100% 3.09 199.06 539 84 8-24-95 43 48.30 486.1 20 1,500 120 O O · · · · 0 1.850 1 100% 3.51 149.11 688 107 8-28-95 47 102.70 588.8 25 1,550 120 O O · · · · O 1,625 I 100% 3.09 360,94 1,049 164 9-7-95 57 237.60 826.4 34 1,500 115 O O · · · · PO 1,600 I 100% 2.91 733.49 1,782 278 9-14-95 64 166.10 992.5 41 1,450 105 O O O · · · PO 1,725 I 100% 2.87 483.84 2,266 354 9-15-95 65 25.30 1,017.8 42 1,500 105 O O O · · · PO 1.800 I 100% 2.99 72.55 2.339 365 9-18-95 68 71.60 1,089.4 45 1,450 105 O O O · · · PO 1.825 I 100% 3.03 214.23 2,553 399 9-25-95 75 171.10 1,260.5 53 1,600 97 O O O · · · · 1,850 1 100% 2.84 519.06 3,072 480 9-29-95 79 94.00 1,354.5 56 1,550 102 O O O · · · · 1,900 I 100% 3.07 267.04 3,339 522 10-2-95 82 70.60 1,425.1 59 1,560 104 O O O · · · · 2,158 3 100% 3.55 216.61 3,556 556 10-6-95 86 96.00 1,521.1 63 1,535 109 O O O · · O · 2,200 3 100% 3.80 341.09 3,897 609 10-9-95 89 71.70 1,592.8 66 1,625 105 O O O · · O · 2.186 3 100% 3.63 272.20 4,169 651 10-17-95 97 10.40 1,603.2 67 1,700 90 · O O O · O · 3,800 3 100% 5.41 37.79 4,207 657 10-19-95 99 49.80 1,653.0 69 1,700 95 · O O O · O · 3,800 3 100% 5.72 269.63 4,476 699 10-24-95 104 119.40 1,772.4 74 1,550 95 · O O O · O · 3,400 3 100% 5.11 682.38 5,159 806 10-30-95 110 142.60 1,915.0 80 1,500 95 · O O O · O · 2,500 3 100% 3.76 729.18 5,888 920 11-2-95 113 73.70 1,988.7 83 1,500 90 · O O O · O · 2,200 3 100% 3.13 277.10 6,165 963 11-6-95 117 90.10 2,078.8 87 1,500 93 · O O O · O · 3,300 3 100% 4.86 282.42 6,447 1,007 11-9-95 120 72.80 2,151.6 90 1,550 90 · O O O · O · 2,950 3 100% 4.20 353.70 6.801 1,063 11-15-95 127 166.80 2,318.4 97 1,450 88 · O O O · · · 2,800 3 100% 3.90 701.09 7.502 1,172 11-22-95 133 95.60 2,414.0 101 1,500 90 · O O O · · · 1,885 3 100% 2.69 372.92 7,875 1,230 11-29-95 140 167.30 2,581.3 108 1,476 85 · O O O · · · 2,030 I 100% 2.73 449.33 8,324 1,301 12-4-95 145 118.00 2,699.3 112 1,500 85 O O O · · · · 1,800 3 100% 2.42 322.34 8,647 1,351 12-20-95 161 125.00 2,824.3 118 1,450 90 O O O · · · · 3,000 3 100% 4.27 302.77 8.950 1,398 1-2-96 174 62.60 2,886.9 120 1,450 90 · O O · · · · 1,200 1 100% 1.71 267.58 9,217 1,440 1-11-96 183 98.90 2,985.8 124 1,500 90 · O · O · O · 1,600 1 100% 2.28 169.10 9,386 1,467 1-15-96 187 29.00 3,014.8 126 1,500 90 · O · O · O · 1.230 1 100% 1.75 66.11 9,452 1,477 1-15-96 188 22.60 3,037.4 127 1,500 85 · O · O · O · 1,100 1 100% 1.48 39.61 9,492 1,483 1-17-96 189 24.40 3,061.8 128 1,500~ 85 · O · O · O · 1,040 I 100% 1.40 36.12 9.528 1,489 1-19-96 191 45.90 3,107.7 129 1,500 88 · O · O · O · 1,240 I 100% 1.73 64.24 9,592 1,499 1-22-96 194 49.60 3,157.3 132 1,500 85 · O · O · O · 1,210 1 100% 1.63 85.68 9,678 1,512 1-29-96 201 136.10 3,293.4 137 1,450 88 O O · O · O · 1,800 3 100% 2.51 221.60 9,900 1,547 1-31-96 203 44.70 3,338.1 139 1,500 90 O O · O · O · 1,750 3 100% 2.49 112.09 10,012 1,564 2-2-96 205 50.90 3.389.0 141 1,500 85 O O · O · O · 1,800 3 100% 2.42 126.91 10.139 1,584 2-9-96 212 164.30 3,553.3 148 1,470 85 O O · O · O · 1,650 3 100% 2.22 397.96 10,537 1,646 2-19-96 222 239.50 3,792.8 158 1,480 88 O O · O · O · 1,250 1 100% 1.74 531.77 11,068 1,729 2-23-96 226 17.40 3,810.2 159 1,475 85 O O · O · O · 800 I 100% 1.08 30.30 11,099 1,734 3-1-96 233 35.70 3.845.9 160 1,450 80 O O · O · O · 950 3 100% 1.20 38.43 11,137 1,740 3-6-96 238 29.40 3,875.3 161 1,580 80 O O · O · O · 1~500 3 100% 2.41 35.37 11,172 1,746 3-11-96 243 195.70 4,071.0 170 1,500 80 O O · O · O ·- .1,200 3 100% 1.52 470.92 11,643 1,819 TABLE 1. SUMMARY OF VES MONITORING DATA CALIFORNIA SHEET METAL, BAKERSFIELD, CALIFORNIA Outlet Cumulative~, Cumulative Cumulative Temper- Inlet Well Well Well Well Well Well Dilution TPH Reduction Cumulative Cumulative Date Calendar Operatingi Operating Operating ature Flow V~N-I WN-2 WN-3 VW-4 VW-5 VW-6 air TPH In Efficiency Lbs/Hour Total Lbs. Monitored DaTs Hours I Hours Days (°F) (scfm) (valve} (valve) (valve) (valve) (valve) (valve) (valve) (ppmv) (ppmv) (>90%) Extracted Extracted Extracted Extracted 3-22-96 254 119.90 ~ 4,190.9 175 1,500 80 O O · O · O · 1,800 3 100% 2.28 182.22 11,826 1,848 3.30-96 262 106.90 4,297.8 179 1,550 80 0 0 · 0 · 0 · 1,920 3 100% 2.43 243.70 12,069 1,886 4-3-96 266 63.00 4,360.8 182 1,500 70 O · O · O O · 1,410 10 99% 1.56 153.19 12,222 1,910 4-5-96 268 7.00 4,367.8 182 1,450 75 O · O · O O · 1,030 5 100% 1.22 10.94 12,233 1,911 4-8-96 271 1.20 4,369.0 182 1,500 65 O · O · O O · 1,570 3 100% 1.62 1.47 12,235 1,912 4-12-96 275 1.30 4,370.3 182 1,450 70 O · O O · O · 1,330 3 100% 1.47 2.10 12,237 1,912 4-17-96 280 1.70 4,372.0 182 1,600 60 O · O O · O · 990 I 100'/o 0.94 2.51 12,239 1,912 4-19-96 282 11.10 4,383.1 183 1,550 80 O O · O · O · 1,420 10 99% 1.80 10.44 12,250 1,914 4-25-96 288 5.70 4,388.8 183 1,560 65 O O · O O · · 1,150 5 100% 1.18 10.25 12,260 1,916 5-1-96 294 12.50 4,401.3 183 1,535 70 O O · O O · · 1,060 3 100% 1.17 14.79 12,275 1,918 5-3-96 296 11.90 4,413.2 184 1,500 60 O O · O O · · 1,360 10 99% 1.29 13.98 12,289 1,920 5-6-96 299 18.80 4,432.0 185 1,550 75 O O · · O O · 1,180 3 100% 1.40 24.29 12,313 1,924 5-8-96 301 22.30 4,454.3 186 1,500 80 · O · · O O · 970 I 100% 1.23 31.24 12,344 1,929 5-10-96 303 28.90 4,483.2 187 1,450 70 · O · · O O · 1,400 10 99=/, 1.55 35.50 12,380 1,934 5-13-96 306 21.70 4,504.9 188 1,500 75 · O · O · O · 1,250 5 100% 1.48 33.67 12,414 1,940 5-20-96 313 46.50 4,551.4 190 1,450 65 · O · O · O · 860 5 99% 0.88 69.01 12,483 1,950 5-23-96 316 22.50 4,573.9 191 1,600 70 · O · O · O · 730 3 100% 0.81 19.91 12,503 1,954 5-29-96 322 20.50 4,594,4 191 1,550 60 O · O O O · · 1,800 20 99% 1.71 16.58 12,519 1,956 5-31-96 324 2.80 4,597.2 192 1,560 80 O · O O O · · 1,140 15 99% 1.44 4.79 12,524 1,957 6-7-96 331 9.90 4,607.1 192 1,535 65 0 · 0 0 0 · · 500 I 100% 0.51 1429 12,538 1,959 6-14-96 338 10.70 4,617.8 192 1,500 70 O · O · PO O · 1,220 15 99% 1.35 5.51 12,544 1,960 6-17-96 341 13.50 4,631.3 193 1,550 60 O · O · PO O · 940 3 100% 0.89 18.25 12,562 1,963 6-24-96 348 14.50 4,645.8 194 1,500 75 O O · · PO O · 780 3 100% 0.93 12.95 12,575 1,965 6-27-96 351 14.10 4,659.9 194 1,450 80 O O · O · PO · 2,900 30 99% 3.67 13.06 12,588 1,967 6-28-96 352 13.40 4,673.3 195 1,500 70 0 0 · 0 · PO · 2,050 20 99% 2~'7 49.22 12.637 1,975 7-1-96 355 20.60 4,693.9 196 1,450 75 O O · O · PO · 1,300 15 99% 1.54 46.80 12,684 1,982 7-3-96 357 3.50 4,697.4 196 1,500 70 O O O O O · · 1,745 20 99% 1.93 5.40 12,689 1,983 7-8-96 362 2.50 4,699.9 196 1,600 60 · O O O O · · 1,265 15 99% 1.20 4.83 12,694 1,983 7-10-96 364 3.20 4,703.1 196 1,550 80 · 0 0 0 0 · · 1,680 20 99% 2.13 3.85 12,698 1,984 7-17-96 371 2.70 4,705.8 196 1,560 65 · O O · PO O · 1,225 15 99% 1.26 5.74 12,704 1,985 7-19-96 373 13.50 4,719.3 197 1,535 70 · O O · PO O · 1,450 15 99% 1.61 17.02 12,721 1,988 7-30-96 384 2.40 4,721.7 197 1,500 60 · O · · PO O · 1,170 15 99% 1.11 3.86 12,725 1,988 9-2-96 387 4.50 4,726.2 197 1,550 75 O · · O · PO · 1,535 20 99% 1.82 5.00 12,730 1,989 8-7-96 392 12.30 4,738.5 197 1,500 80 O · · O · PO · 1,300 15 99% 1.65 22.42 12,752 1,993 8-9-96 394 4.40 4,742.9 198 1,450 70 O · · O · PO · 1,465 15 99% 1.62 7.24 12,759 1,994 8-14-96 399 14.10 4,757.0 198 1,500 75 O · O O O · · 1,105 15 99% 1.31 22.89 12,782 1,997 6-16-96 401 8.20 4,765.2 199 1,450 65 O · O O O · · 1,330 15 99% 1.37 10.76 12,793 1,999 6-21-96 406 12.70 4,777.9 199 1,600 70 O O O O O · · 1,085 15 99% 1.20 17.38 12,810 2,002 6-23-96 408 8.50 4,786.4 199 1,550 60 O O O · PO O · 1,245 15 99% 1.18 10.22 12,821 2.003 6-2896 413 21.70 4,808.1 200 1,560 80 0 0 0 · PO 0 · 1,020 15 99% 129 25.66 12,846 2,007 6-30-96 415 10.70 4,818.8 201 1,535 65 0 O · · PO 0 · 1,185 15 99% 1.22 13.82 12,860 2,009 9-3-96 419 2.50 4,821.3 201 1,500 70 0 0 · 0 · PO · 960 10 99% 1.06 3.05 12.863 2,010 9-6-96 422 36.70 4,858.0 202 1,550 60 · O · O · PO · 1,110 15 9oj% 1.05 39.04 12,902 2,016 9-10-96 426 45.70 4,903.7 204 1,500 75 · O · O · PO · 925 10 99% 1.10 48.18 12,950 2,(Y23 9-13-96 429 62.50 4.966.2 207 1,450 80 · O O O O · · 1,055 15 99% 1.34 68.64 13,019 2,034 9-18-96 434 116.30 5,082.5 212 1,500 70 · O O O O · · 865 10 99% 0.96 155.39 13,174 2,058 9-20-96 436 36.40 5,118.9 213 1,450 75 · O O O O · · 970 10 99% 1.15 34.89 13,209 2,064 9-24-96 440 76.50 5,195.4 216 1,500 70 O · O · PO O · 850 10 99% 0.94 88.11 13,297 2,078 9-25-96 441 25.40 5,220.8 218 1,600 60 O · O · PO O · 1~115 15 99% 1.06 23.93 13,321 2,081 9-27-96 443 46.30 5,267.1 219 1,550 80 O · · · PO O · 835 10 99% 1.06 49.04 13,370 2,0~9 10-2-96 448 28.00 5,295.1 221 1,560 65 0 · · 0 · PO · 1,030 10 99% 1.06 29.61 13,400 2,094 10-4-96 450 8.60 5,303.7 221 1,535 70 O · · O · PO · 850 10 99% 0.94 9.12 13,409 2,095 10-9-96 455 32.50 5,336.2 222 1,500 60 O O · O · PO · 975 10 99% 0.93 30.61 13,440 2.100 m ' TABLE 1, SUMMARY OF VES MONITORING DATA CALIFORNIA SHEET METAL, BAKERSFIELD, CALIFORNIA Outlet Cumulative Cumulative ; Cumulative Temper- Inlet Well Well Well Well Well Well Dilution TPH Reduction Cumulative Cumulative Date Calendar Operating Operating Operating ature Flow VW-1 VW-2 VW-3 VW-4 VW-5 WN-6 air TPH In Out Efficiency Lbs/Hour Total Lbs Lbs. Gallons Monitored Days Hours Hours Days (°F) (scfm) (valve) (valve) (valve) (valve) (valve) (valve) (valve) (ppmv) (ppmv) (>90%) Extracted Extracted Extracted Extracted 10-11-96 457 7.20 5,343.4 223 1,550 75 O O O O O · · 780 10 99% 0.93 6.67 13,446 2,101 10-16-96 46~ 39,00 5,382.4 224 1,500 80 O O O O O · · 940 10 99% 1.19 36.12 13,482 2,107 10-18-96 464 8.20 5,390.6 225 1,450 70 O O O O O · · 965 10 99% 1.07 9.76 13,492 2,108 10-22-96 468 22.40 5,413.0 226 1,500 75 O O O · PO O · 895 10 99"/0 1.06 23.95 13,516 2,112 10-25-96 471 26.40 5,439.4 227 1,450 65 · O O · PO O · 940 10 '99% 0.97 28.05 13,544 2,116 10-30-96 476 31.50 5,470.9 228 1,500 70 · O · · PO O · 855 10 99% 0.95 30.47 13,575 2,121 11-1-96 478 14.80 5,485.7 229 1,600 60 · O · O · PO · 915 10 99% 0.87 14.02 13,589 2,123 11-6-96 483 16.50 5,502.2 229 1,550 80 · O · O · PO · 840 10 99% 1.06 14.34 13,603 2,125 11-8-96 485 12.40 5,514.6 230 1,560 65 · O · O · PO · 905 10 99% 0.93 13.19 13,616 2,128 11-13-96 ,490 20.50 5,535.1 231 1,535 70 O · O O O · · 815 10 99% 0.90 19.09 13,635 2,131 11-15-96 492 15.00 5,550.1 231 1,500 60 0 · 0 0 0 · · 880 10 99% 0.84 13.55 13,649 2,133 11-19-96 496 22.40 5,572.5 232 1,550 75 O · O O O · · 780 10 99% 0.93 18.72 13,668 2,136 11-22-96 499 11.70 5,584.2 233 1,500 80 O · O · PO O · 865 10 99% 1.10 10.84 13,678 2,137 , 11-26-96 503 24.80 5,609.0 234 1,450 70 O · O · PO O · 745 10 99% 0.83 27.17 13,706 2,142 12-3-96 510 33.60 5,642.6 235 1,500 75 O O · · PO O · 850 10 99% 1.01 27.74 13,733 2,146 12-6-96 513 16.20 5,658.8 236 1,450 70 O O · O · PO · 720 10 99% 0.80 16.35 13,750 2,148 12-I0-96 517 26.40 5,685.2 237 1,500 60 O O · O · PO · 835 10 99% 0.79 21.06 13,771 2,152 12-13-96 520 15.30 5,700.5 238 1,600 80 O O · O · PO · 735 10 99% 0.93 12.14 13,783 2,154 12-17-96 524 28.80 5,729.3 239 1,550 65 0 0 0 0 0 · · 840 10 99% 0.86 26.81 13,810 2,158 12-20-96 527 13.80 5,743.1 239 1,560 70 · O O O O · · 720 10 99% 0.80 11.93 13,822 2,160 12-24-96 531 22.40 5,765.5 240 1,535 60 · O O O O · · 835 10 99% 0.79 17.87 13,840 2,162 12.27-96 534 11.10 5,776,6 241 1,500 75 · O O · PO O · 760 10 99% 0.90 8.80 13,848 2,164 12-31-96 538 25.60 5,802.2 242 1,550 80 · O O · PO O · 805 10 99</0 1.02 23.10 13,871 2,167 1-3-97 541 27.90 5,830.1 243 1,500 70 · O · · PO O · 745 10 99% 0.83 28.44 13,900 2,172 1-7-97 545 31.20 5,861.3 244 1,450 75 O · · O · PO · 790 10 99% 0.94 25.76 13,926 2,176 1-10-97 548 31.20 5,892.5 246 1,500 65 0 · · 0 · PO · 730 10 99% 0.75 29.~7 13,955 2,180 1-14-97 552 32.80 5,925.3 247 1,450 70 O · · O · PO · 770 10 99% 0.85 24.64 13,980 2,184 1-16-97 554 21.20 5,946.5 248 1,500 60 O · O O O · · 715 10 99% 0.68 18.09 13,998 2,187 1-17-97 555 7.60 5,954.1 248 1,600 80 O · O O O · · 755 10 99% 0.96 5.16 14,003 2,188 1-21-97 559 38.80 5,992.9 250 1,550 65 O O O O O · · 700 10 99% 0.72 37.10 14,040 2,194 1-23-97 561 17.00 6,009.9 250 1,560 70 O O O · PO O · 730 10 99% 0.81 12.25 14,052 2,196 1-27-97 565 30.40 6,040.3 252 1,535 60 O O O · PO O · 695 10 99% 0.66 24.59 14,077 2,199 1-30-97 568 33.90 6,074.2 253 1,500 75 O O · · PO O · 715 10 99% 0.85 22.38 14,099 2,203 2-3-97 572 36.40 6,110.6 255 1,550 80 O O · O · PO · 680 10 ~ 0.86 30.90 14,130 2.208 2-5-97 574 19.80 6;130.4 255 1,500 70 · O · O · PO · 700 10 99% 0.78 17.05 14,147 2,210 2-12-97 581 58.10 6,188.5 258 1,450 75 · 0 · 0 · PO · 645 10 98% 0.77 45.07 14,192 2,218 2-14-97 583 20.80 6,209,3 259 1,500 70 · O O O O · · 660 10 98% 0.73 15.93 14,208 2,220 2-19-97 588 39.00 6,248.3 260 1,450 60 · O O O O · · 605 10 98% 0.57 28.52 14,237 2,224 2-21-97 590 19.20 6,267.5 261 1,500 80 · O O O O · · 630 10 98% 0.80 11.03 14.248 2,226 2-24-97 593 26.10 6,293.6 262 1,600 65 O · O · PO O · 595 10 98% 0.61 20.82 14,2.68 2,229 2-26-97 595 19.00 6,312.6 263 1,550 70 O · O · PO O · 510 10 98% 0.57 11.63 14,280 2,231 3-4-97 601 53.40 6,366.0 265 1,560 ~ 60 O · · · PO O · 585 10 98% 0.56 30.18 14,310 2,236 Opel3 = O Closed = · Parlially open = PO ~ Q HOLGUIN, FAHAN & ASSOC~T~, INC. ENVIRONMENTAL MANAGEMENT CONSULTANTS ATTACHMENT 1. SUMMARY OF PREVIOUS WORK EUREKA STREET SIDEWALK T ----G4~.E.~. CHAIN-LINK FENCE ~ O3 CALIFORNIA Z SHEET METAL n" BUILDING 'v' CONCRETE SLAB b, , ~ CANOPY , ¢, , B-9 B-8 B-6 U.I [07 B-5 · _z B-1 ~ ~ ,' B-2 ' ~ LIMIT OF \ ' TANK EXCAVATION ~ Bo3 B-4 SCALE IN FEET ~ CHAIN-LINK FENCE 0 10 20 B-7 ALLEY ~ LEGEND MR. JOHN M. AND MRS. DEANNA J. McCAULEY '~' SOIL BORING CALIFORNIA SHEET METAL 601 EUREKA STREET BAKERSFIELD, CALIFORNIA FIGURE 1 - PLOT PLAN HOLGUIN, FAHAN & ASSOCIATES, INC. REVISION DATE: MAY 14, 1997: RRI TABLE 1. SUMMARY OF SOIL SAMPLE ANALYTICAL RESULTS FOR TANK REMOVAL CALIFORNIA SHEET METAL, BAKERSFIELD, CALIFORNIA SAMPLE DATE SAMPLE TPH AS ETHYL- TOTAL SOURCE SAMPLED DEPTH I.D. GASOLINE BENZENE TOLUENE BENZENE XYLENES REF (fbg) (mg/kg) (mg/kg) (mg/kg) (rog/kg) (rog/kg) EPA ANALYTICAL METHOD 8015 (M) 8020 N/A MINIMUM REPORTING LEVEL 1.0 0.005 0.005 0.005 0.005 N/A S-1 12-17-91 8 I S-1-8 810 44 170 19 153 A S-2 12-17-91 12I S-2-12 10,000 98 275 23 290 A REF = Report reference. N/A = Not applicable. A = CALPI, Inc.'s, report dated September 1992. TABLE 2. SUMMARY OF SOIL SAMPLE ANALYTICAL RESULTS CALIFORNIA SHEET METAL, BAKERSFIELD, CALIFORNIA SAMPLE DATE SAMPLE TPH AS ETHYL- TOTAL TOTAL ORGANIC SOURCE SAMPLED DEPTH I.D. GASOLINE BENZENE TOLUENE BENZENE XYLENES LEAD LEAD REF (fbg) (mg/kg) (mg/kg) (rog/kg) (mg/kg) (mg/kg) (mg/kg) (mg/kg) EPA ANALYTICAL METHOD 8015 (M) 8020 7420 N/A METHOD REPORTING LIMIT VARIES-SEE LABORATORY REPORTS N/A B-1 3-19-92 5 B-1-5 6,000 ND (>20) 210 50 1,960 39 2.7 A 3-19-92 15 B-1-15 6,000 ND (>100) 390 170 1,290 .... A 3-19-92 30 B-1-30 3,100 ND (>2.0) 86 71 438 4.5 -- A 3-19-92 45 B-1-45 3,000 5.0 160! 75 390 .... A 3-19-92 60 B-1-60 13,000 110 1,300 300 2,560 .... A 3-19-92 75 B-1-75 ND ND ND ND ND ND -- A 3-19-92 80 B-1-80 ND ND ND ND ND .... A 3-19-92 85 B-1-85 ND ND 0.047 ND 0.014 4.5 -- A 3-19-92 90 B-1-90 ND 0.084 0.16 0.049 0.088 .... A B-2 3-19-92 15 B-2-15 12,000 1,000 1,500 340 2,480 .... A 3-19-92 30 B-2-30 400 0.2 1.2 4.7 49 3.9 -- A B-3 3-19-92 30 B-3-30 30,000 400 3,400 800 4,300 .... A B-4 3-19-92 30 B-4-30 ND ND ND ND ND .... A 3-19-92 40 B-4-40 ND ND ND ND ND .... A B-5 .3-19-92 15 B-5-15 ND 0.011~ 0.017 ND ND .... A 3-19-92 40 B-5-40 7,000 42 540 160 810 .... A B-6 3-19-92 20 B-6-20 ND ND ND ND ND 3.6 -- A 3-19-92 30 B-6-30 ND ND ND ND ND .... A 3-19-92 40 B-6-40 ND ND 0.008 ND 0.01 8.5 -- A B-7 3-8-93 20 B-7-20 ND ND ND ND ND .... B 3-8-93 30 B-7-30 ND ND ND ND ND .... B 3-8-93 50 B-7-50 ND 0.064 0.029 ND 0.015 .... B B-8 3-8-93 20 B-8-20 ND ND ND ND ND .... B 3-8-93 35 B-8-35 ND 0.079 0.11 ND 0.091 .... B B-9 3-8-93 30 B-9-30 ND ND ND ND NDI .... B 3-8-93 40 B-9-40 ND ND ND ND ND .... B 3-8-93 50 B-9-50 ND 0.11 0.027 ND 0.045 .... B REF = Re )crt reference. N/A = Not applicable. ND = Not detected. -- = Not analyzed. A = Wilson & Associates, Inc.'s, report dated September 1992. B = Piwarea Engineering, Inc.'s, report dated April 1993. TABLE 3. SUMMARY OF SOIL SAMPLE ANALYTICAL RESULTS FOR REMEDIATION PROGRESS ASSESSMENT CALIFORNIA SHEET METAL, BAKERSFIELD, CALIFORNIA SAMPLE DATE SAMPLE TPH AS ETHYL- TOTAL SOURCE SAMPLED DEPTH I.D. GASOLINE BENZENE TOLUENE BENZENE XYLENES REF (fbg) (mg/kg) (mg/kg) (mg/kg) (rog/kg) (rog/kg) EPA ANALYTICAL METHOD 8015 (M) 8020 N/A METHOD REPORTING LIMIT 10 0.005 0.005 0.015 0.015 N/A B-10 9-4-96 15 B-10-15 2,400 ND 200 25 300' A 9-4-96 25 B-10-25 4,200 ND 29 48 160 A 9-4-96 35 B-10-35 2,800 14 39 49 74 A 9-4-96 45 B-10-45 190 ND 0,24 0,53 8,3 A 9-4-96 55 B-10-55 5.900 8.1 50 97 160 A 9-4-96 65 B-10-65 2,600 34 140 340 320 A 9-4-96 75 B-10-75 ND ND 0.024 ND 0.037 A 9-4-96 85 B-10-85 ND 0.72 0.77 0.061 0.34 A 9-4-96 90 B-10-90 ND 0.36 0.52 0.039 0.2 A B-11 9-4-96 15 B-11-15 ND ND ND ND ND A 9-4-96 30 B-11-30 260 ND 0.015 0.029 1.4 A 9-4-96 45 B-11-45 ND ND ND ND ND A 9-4-96 50 B-11-50 ND ND ND ND ND A B-12 9-4-96 10 B-12-10 ND ND ND ND ND A 9-4-96 25 B-12-25 1,400 0.0054 0.16 3.4 35 A 9-4-96 40 B-12-40 ND 0.0083 0.065 0.047 0.47 A 9-4-96 50 B-12-50 ND ND ND ND ND A REF = Re ~ort reference. N/A = Not applicable. ND = Not detected. A = Holguin, Fahan & Associates, Inc.'s, current report. TABLE 4. SUMMARY OF SOURCE COMPLIANCE MONITORING ANALYTICAL RESULTS CALIFORNIA SHEET METAL, BAKERSFIELD, CALIFORNIA DATE TPH AS ETHYL- TOTAL SAMPLE SOURCE SAMPLED ~SAMPLE I.D. GASOLINE BENZENE TOLUENE BENZENE XYLENES REF (ppmv) (ppmv) (ppmv) (ppmv) (ppmv) EPA ANALYTICAL METHOD 8015/MI 8020 N/A METHOD DETECTION LIMIT VARIES-SEE LABORATORY REPORTS N/A INFLUENT 7-17-95 95-8623-2 702 33.94 83.19 5.50 42.92 A EFFLUENT 7-17-95 95-8623-1 1.4 ND 0.08 ND 0.14 A I NFLUENT 3-6-96 96-0695 1,900 92 210 32 190 B EFFLUENT 3-6-96 96-0696 ND 0.56 0.29 0.07 0.15 B INFLUENT 6-27-96 96-0695 2,900 74 240 28 340 C EFFLUENT 6-27-96 96-0696 10 0.19 0.1 0.05 0.12 C INFLUENT 9-24-96 96-3134 850 36 72 12 89 D EFFLUENT 9-24-96 96-3135 ND 0.228 0.142 0.01 0.049 D REF = Report reference. N/A = Not applicable. ND = Not detected. A = Holguin, Fahan & Associates, Inc.'s (HFA's) report dated August 4, 1995. B = HFA's report dated April 18, 1996. C = HFA's report dated July 25, 1996. D = HFA's report dated October 14, 1996. HOLGUIN, FAHAN & ASSOCIATES, INC. ENVIRONMENTAL MANAGEMENT CONSULTANTS ATTACHMENT 2. NON-HAZARDOUS WASTE MANIFEST NON-HAZARDOUS WASTE MANIFEST KERN ENVIRONMENTAL SERVICE --- [ 1. Generotor's US ~PA ID No. Manifest . 3. Generator's Name and Mailing Address JOHN M. a DEANNA 3'. NC CAULEY P.O. Box 2348, Bakersfield, CCA 4. Generator's Phone ( 805.) 635--3001 Transporter 1 Company Name KERN ENVIRONHENTAL: SERVICE 7. Transporter 2 Company Name Designated Facility Name and Site Address NC KITTRICK WASTE TREAT)fl~NT SITE 56533 Hwy. 58 West MoKittrick, CA 93.Z51 !1. Waste Shipping Name and Description 'Hydrocarbon Impacted Soil 9330 t-2348 6.' US EPA ID Number I!. ........ D. Additional Descriptions for Matekials Listed Above lla: Profile #497L397-BB 8. US EPA ID Number 10. US EPA ID Number 2. Page 1 of 1 Hah;feet 4898000] A. Transportet's Phone (805) 589-5220 B. Transporter's Phone. C. Facility's Phone ( 805 ) 762."'7366 : 12. Containers 13. ~ Total 15. Special Handling Instru~ions and Additional Information KES Project' No. 97~4898T In case of emergenoy'Please call (805D589-5220 E. Handling 'Pick Up Location: Cai Sheet Metal, Bakersfield; CA 601 Eureka St~ 16. GENERATOR'S CERTIFICATION: I certify the materials described on this manifest are not subject to federal regulations for reporting ~roper disposal of Hazardous Pri~yped Naj~e ,~ ~ ~ i Monl 17. Transporter 1 Acknowledgement of ReceiFl~of Materi~/  ,~kd/Tyzd Name . Sig~ ~~ Month Transporter 2 Acknowledgement of Receipt of Materials Printed/Typed Name 19. Discrepancy Indication Space Signature Monfh 20. Facility Owner or Operator: Certification of receipt of waste materi01s covered by this manifest except as noted in Item 19. Printed/Typed Name Signature GENERATOR'.S COPY Month BAKERSFIELD FIRE DEPARTMENT October 23, 1996 FIRE CHIEF MICHAEL R. KELLY ADMINISTRA11VE SERVICES 2101 'H' Street Bakersfield, CA 93301 (805) 326-3941 FAX (805) 395-1349 SUPPRESSION SERVICES 2101 'H' Street Bakersfield, CA 93301 (805) 326-3941 FAX (805) 395-1349 PREVEN11ON SERVICES 1715 Chester Ave. Bakersfield, CA 93301 (805) 326-3951 FAX (805) 326-0576 ENVIRONMENTAL SERVICES 1715 Chester Ave. Bakersfield, CA 93301 (805] 326-3979 FAX (805) 326-0576 TRAINING DIVISION 5642 Victor Street Bakersfield, CA 93308 (805) 399-4697 FAX (805) 39%5763 Mr. John M. and Mrs. Deanna $. McCauley California Sheet Metal c/o Griffin, Carrick Attorneys at Law P.O. Box 2348 Bakersfield, CA 93303-2348 RE: California Sheet Metal at 601 Eureka Street Dear Mr. & Mrs. McCauley: This letter is in response to the Third Quarter 1996 Remedial Action Progress Report, dated October 14, 1996, prepared by Holguin, Fahan and Associates. The report requests written guidance pertaining to the additional remediation activities required at the site. The confirmation sample analysis fi.om the soil borings obtained on September 4, 1996 indicate that a substantial reduction in concentrations of contaminates has occurred through the remediation activity on-site. While the Lawrence Livermore Recommendations are widely acknowledged, the current statewide reference document remains the Leaking Underground Fuel Tank (LUFT) manual, published by the State Water Resources Control Board. Therefore, applying the currem site specific data to a risk appraisal technique pursuant to the LUFT manual guidance would be appropriate at this time. This office recognizes the ASTM Standard for Risk Based Corrective Action as an acceptable alternate Risk Appraisal pursuant to the LUFT manual guidance. Consideration of risks to receptors other than groundwater will be also required in any such risk appraisal. In addition, the vapor extraction system shall continue to operate until a risk appraisal indicating that no further action is warranted is accepted by this office. Sincerely, Howard H. Wines, III Hazardous Materials Technician HIqW/~ cc: Mark Magargee, HFA HOL UIN, FAHAN & INC. ENVIRONMENTAL MANAGEMENT CONSULTANTS 143 South Figueroa Street · Ventura, California 93001 (805) 652-0219 · FAX (805) 652-0793 853 ~vVest 17th Street · Costa Mesa, California 92627 (714) 642-2660 · FAX (714) 642-2544 3157 Pegasus Drive · Bakersfield, California 93308 (805) 391-0517 · FAX (805) 391-0826 March 6, 1997 Mr. John M. and Mrs. Deanna J. McCauley California Sheet Metal In Care of Mr. Patrick C. Carfick Griffin · Carrick Attorneys at Law Post Office Box 2348 Bakersfield, California 93303-2348 Subject: FOURTH QUARTER 1996 REMEDIAL ACTION PROGRESS REPORT FOR CALIFORNIA SHEET METAL, 601 EUREKA STREET, BAKERSFIELD, CALIFORNIA Dear Mr. and Mrs. McCauley: Holguin, Fahan & Associates, Inc., (HFA) is pleased to present the following fourth quarter 1996 progress report of the ongoing remedial action being conducted at the California Sheet Metal property located at 601 Eureka Street in the city of Bakersfield, Kern County, California (see Figure 1 - Site Location Map). Remedial activities at the site have Included the operation of a VES under San Joaquin Valley Unified Air Pollution Control District - Southern Region (SJVUAPCD-SR) PTO #S-2660-1-0. The remedial activities are being required by the City of Bakersfield Fire Department, Hazardous Materials Division UST Local Oversight Program (BFDHMD UST LOP) as a result of the discovery of gasoline-containing soils surrounding the former gasoline UST at the site. SITE BACKGROUND The site previously contained a single 550-gallon gasoline UST. California Sheet Metal contracted Calpi, Inc., to remove the UST on December 17, 1991. Gasoline hydrocarbon concentrations were detected in the soil samples (S-1 and S-2) collected from beneath the UST. On March 19, 1992, six soil borings (B-1 through B-6) were drilled at the site by Wilson & Associates, Inc., and on March 8, 1993, three additional soil borings (B-7 through B-9) were drilled at the site by Piwarea Engineering, Inc. The soils investigations indicated TPH as gasoline concentrations to depths less than 75 fbg and less than 45 feet laterally from the former UST location (see Attachment 1 for a summary of previous work). On January 17 and 18, 1994, HFA drilled and installed slx vapor extraction wells (VW-1 through VW-6). HFA connected the wells with 3-inch-diameter piping to a central manifold (see Figure 2- Plot Plan Showing VES). On November 28, 1994, HFA acquired ENVIRONMENTAL PLANNERS · SCIENTISTS * GEOLOGISTS AND ENGINEERS Contaminated Site Assessments * Real Estate Audits * Site Remediation * Hazardous Waste Management HOLGUIe FAHAN & IATES, INC. ENVIRONMENTAL MANAGEMENT CONSULTANTS Mr. Jol Ind Mrs. Deanna J. McCauley California Sheet Metal March 6, 1997 - Page 2 ATC Permit #S-2660-1-0 for a VES utilizing a King, Buck/Hasstech, Inc., 150-scfm, direct-fired thermal oxidizer for the in-situ vapor extraction of volatile hydrocarbons in the soils at the site. Subsequently, the system was delivered and installed at the site (see Figure 2 and Figure 3 - VES Schematic Diagram). On July 17, 1995, HFA conducted a source test of the treatment unit in compliance with the requirements of the ATC permit. Based on the vapor sampling and analytical results, the efficiency of the direct-fired, thermal oxidation system was greater than 99.8 percent, the maximum VOC emission was 1.4 ppmv, and the benzene emission was less than 0.03 ppmv. Therefore, the source test demonstrated compliance with the conditions of the ATC permit (see Attachment 1). HFA subsequently requested that the ATC permit be upgraded to a PTO. During the first 4 weeks of operation, high VOC concentrations and oxygen deficiency in the soil caused the unit to frequently shut down. During this time, vapor wells VW-1 and VW-2 were used as extraction wells while vapor wells VW-3 through VW-6 were used as aiE inlet wells, and the dilution air valve was completely open. As soil conditions improved, dilution air was slowly decreased until no dilution air was required, and well VW-3 was brought on line as an extraction well. HFA has operated the unit 24 hours per day since August 14, 1995, with only short periods of inactivity for maintenance, draining of the knockout pot, and a few occurrences when the system has shut down. On March 6, 1996, June 27, 1996, and September 24, 1996, HFA collected influent and effluent vapor samples, which were analyzed for TPH as gasoline and BTEX. The inlet vapor concentration was 1,900 ppmv during the March 6, 1996, sampling event; 2,900 ppmv during the June 27, 1996, sampling event; and 850 ppmv during the September 24, 1996, sampling event (see Attachment 1). As of the end of the third quarter of 1996, HFA estimated the mass of gasoline hydrocarbons extracted from the subsurface since start-up to be approximately 13,370 pounds, which is equivalent to approximately 2,089 gallons of gasoline. However, with the diminished volume of hydrocarbons in the subsurface resulting in frequent system shutdowns, only 733 pounds of hydrocarbons was removed during the third quarter of 1996 (see Table 1 - Summary of VES Monitoring Data). Therefore, on September 4, 1996, HFA drilled three soil borings (B-10 through B-12) in and around the location of the former USTs to assess the progress of achieving the BFDHMD UST LOP cleanup levels at the site (see Figure 2 for verification soil boring locations). Soil boring B-10 was drilled to a depth of 91 fbg through the location of the former UST, and soil borings B-11 and B-12 were drilled to a depth of 51 fbg at locations laterally from the former UST. Analysis of soil samples collected from soil boring B-10 indicated detectable TPH as gasoline and BTEX concentrations in the interval ranging in depth from 15 to 65 fbg, with benzene concentrations HOL©UIe Mr. Job FAHAN & ASSOCIATES, INC. ENVIRONMENTAL MANAGEMENT CONSULTANTS Ind Mrs. Deanna J. McCauley California Sheet Metal March 6, 1997 - Page 3 detected at a maximum concentration of 34 mg/kg in the soil sample collected from a depth of 65 fbg. Analysis of soil samples indicated detectable TPH as gasoline concentrations in the soil sample collected from a depth of 30 fbg in soil boring B-11 and in the soil sample collected from a depth of 25 fbg in soil boring B-12 [see Attachment 1). One result of the progress soils assessment is that a significant reduction in the concentration of gasoline hydrocarbons from the original maximum TPH as gasoline and benzene concentrations of 30,000 mg/kg and 1,000 mg/kg, respectively, has been achieved. Another result is that the lateral areas of the original vadose zone plume indicate only residual hydrocarbon concentrations in' the soil compared to the original maximum lateral TPH as gasoline and benzene concentrations of 7,000 mg/kg and 42 mg/kg, respectively. However, significant concentrations of gasoline hydrocarbons remain in the central area of the vadose zone plume, with a maximum TPH as gasoline concentration of 5,900 mg/kg and a maximum benzene concentration of 34 mg/kg. Given the results of the remediation progress soils assessment, the BFDHMD UST LOP, in its letter dated October 23, 1996, requested that a risk evaluation of potential exposure of the remaining hydrocarbons in the subsurface to potential receptors be performed prior to consideration of the site for closure. HFA prepared a risk evaluation, dated December 24, 1996, which utilized the previously obtained site assessment and remediation data along with ASTM Designation: E-1739 RBCA Tier 2 default and site-specific input parameters to perform the analysis. The results of the risk evaluation are that active remediation has been effective in removing gasoline hydrocarbons from the subsurface at the site and would continue to be effective in removing the remnant concentrations in the soil. However, if the BFDHMD UST LOP approves of the discontinuation of active remediation activities, then the conclusions of the RBCA Tier 2 risk evaluation are that the remnant concentrations of gasoline hydrocarbons within the soils at the site do not exceed the levels appropriate for the current commercial use of the property and do not present an excessive risk of exposure to the adjacent residence. HFA continued active remediation pending the site status determination of the BFDHMD UST LOP. YES REPORT FOR THE FOURTH QUARTER OF 1996 During the fourth quarter of 1996, inlet vapor concentrations were reduced from a maximum of 1,030 ppmv to a minimum of 720 ppmv (see Figure 4 - Influent and Effluent TPH Concentrations and Table 1). The system shutdowns, which occurred frequently during the fourth quarter of 1996, appear to be related to the diminished volume of hydrocarbons remaining in the subsurface, and the permeability of the soils containing the greatest concentrations of hydrocarbons. After a shutdown occurs, the VOCs recharge into the more permeable HOLGUIe FAHAN & ASSOCIATES, INC. ENVIRONMENTAL MANAGEMENT CONSULTANTS Mr. Jot Mrs. Deanna J. McCauley California Sheet Metal March 6, 1997 - Page 4 sediments. Initially, after the system is restarted, the concentrations of VOCs extracted are relatively high. However, the concentrations of VC)Cs extracted drop rapidly until shutdown again occurs. This cycle was repeated frequently during the fourth quarter of 1996. The inlet soil vapor flow rate has been maintained near the maximum stated in the ATC permit and ranges from 60 to 80 scfm. HFA estimates the mass of gasoline hydrocarbons extracted from the subsurface since start-up to be approximately 13,871 pounds, which is equivalent to approximately 2,167 gallons of gasoline (see Figure 5 - Cumulative Extraction Curve and Table 1). However, with the diminished volume of hydrocarbons In the subsurface, only 501 pounds of hydrocarbons was removed during the fourth quarter of 1996. ACTIVITIES PLANNED FOR THE FIRST QUARTER OF 1997 During the first quarter of 1997, HFA will continue full-time operation of the VES unit, pending site status review by the BFDHMD UST LOP. Holguin, Fahan & Associates, Inc., trusts that you will find this Fourth Quarter 1996 Remedial Action Progress Report to your satisfaction. If you have any questions or require additional information, please contact Mr. Mark Magargee at (805) 391-0517 or at e-mail address Mark_Magargee@hfa.com. Respectfully submitted, Kenneth J. Mitchell, REA ~:~,~'--7' Associate Geologist Holguin, Fahan & Associates, Inc. MRM:rri Enclosures: Figure 1 Figure 2 Figure 3 Figure 4 Figure 5 - Table 1 AHachment-1 Site Location Map Plot Plan Showing VES VES Schematic Diagram Influent and Effluent TPH Concentrations Cumulative Extraction Curve Summary of VES Monitoring Data - Summary of Previous Work Mark R. Magargee, CHG, RG Senior Hydrogeologist Holguin, Fahan & Associates, Inc. cc: Mr. Howard H. Wines, III, BFDHMD UST LOP Mr. Patrick C. Carrick, Griffin * Carrick HOLGUI$ FAHAN & ASSOCIATES, INC. ENVIRONMENTAL MANAGEMENT CONSULTANTS Mr. John ~'~---------------~E. and Mrs. Deanna J. McCauley California Sheet Metal March 6, 1997 - Page 5 }ITE LOCATION '7 i ~)dve-in COUN'fY LEGEND 0 0.5 1 MILE I I I I I I 4 I I I 0 1,000 2,000 3,000 4.000 5.000 FEE T H H H I I I I 0 0.5 1 KILOMETER USGS GOSFORD/LAMONT/OIL CENTER/OILDALE 7.5 MINUTE SERIES QUADRANGLES II IlliE .... !-I--I!1~ JOHN M. AND MRS. DEANNA J. McCAULEY CALIFORNIA SHEET METAL 601 EUREKA STREET BAKERSFIELD, CALIFORNIA FIGURE 1 - SITE LOCATION MAP HOLGUIN, FAHAN & ASSOCIATES, INC. HOLGUIe & ASSOCIATES, INC. ENVIRONMENTAL MANAGEMENT CONSULTANTS Mr. Johr Mrs. Deanna J. McCauley California Sheet Metal March 6, 1997 - Page 6 EUREKA STREET SIDEWALK T -~ G4~.~.~. CHAIN-LINK FENCE ~ - ~ CALIFORNIA Z SHEET METAL dr BUILDING '~ CONCRETE SLAB , LIMIT OF  ' GASOLINE-CONTAINING CANOPY SOILS LLI VES __~_ MANIFOLD -~VW-6 SCALE IN FEET ~ CHAIN-LINK FENCE 0 10 20 ALLEY LEGEND MR. JOHN M, AND MRS. DEANNA J. McCAULEY CALIFORNIA SHEET METAL ~ VAPOR EXTRACTION WELL 601 EUREKA STREET "~- VES PIPING BAKERSFIELD, CALIFORNIA '"' FIGURE 2 - PLOT PLAN SHOWING VES ~. VERIFICATION SOIL BORING HOLGUIN, FAHAN & ASSOCIATI~S, INC. REVISION DATE: OCTOBER 11. 1996: RRI HOLGUIe FAHAN & ASSOCIATES, INC. ENVIRONMENTAL MANAGEMENT CONSULTANTS Mr. John ind Mrs. Deanna J. McCauley California Sheet Metal March 6, 1997 - Page 7 <150 VW-1 VW-2 VW-3 VW-4 VW-5 VW-6 -X ( ) KNOCK-OUT DSUM INFLUENT MONITORING POINT WITH <150 scfm BLOWER SILENCER -I- SUPPLEMENTAL FUEL ATMO.~ EFFLUENT MONITORING POINT THERMAL/ CATALYTIC OXIDIZER ;PHERE NOT TO SCALE LEGEND PRESSURE OR VACUUM GAUGE VALVE FLOW GAUGE SAMPLE TAP REVISION DATE: FEBRUARY 8, 1996: RRI MR. JOHN M. AND MRS. DEANNA J. McCAULEY CALIFORNIA SHEET METAL 601 EUREKA STREET BAKERSFIELD, CALIFORNIA FIGURE 2 - VES SCHEMATIC DIAGRAM HOLGUIN, FAHAN & ASSOCIATES, INC. HOLGUIe FAHAN & ASSOCIATES, INC. ENVIRONMENTAL MANAGEMENT CONSULTANTS Mr. John~. and Mrs. Deanna J. McCauley California Sheet Metal March 6, 1997 - Page 8 FIGURE 4 - INFLUENT AND EFFLUENT TPH CONCENTRATIONS 10,000 1,000 100 10 ------I--TPH In I TPH Out I 0 5 10 15 20 25 30 Cumulative Operating Weeks 35 HOLGUIe FAHAN & ASSC~IATES, INC. ENVIRONMENTAL MANAGEMENT CONSULTANTS Mr. John Mrs. Deanna J. McCauley California Sheet Metal March 6, 1997 - Page 9 FIGURE 5 - CUMULATIVE EXTRACTION CURVE 15,000 10,000 5,000 0 0 5 10 15 20 25 30 Cumulative Operating Weeks 35 HOLGUIe FAHAN & ASSOC~T~, INC. ENVIRONMENTAL MANAGEMENT CONSULTANTS Mr. John Mrs. Deanna J. McCauley California Sheet Metal March 6, 1997 - Page 10 HOLGUIe FAHAN & ASS(~IATES, INC. ENVIRONMENTAL MANAGEMENT CONSULTANTS Mr. John Mrs. Deanna J. McCauley California Sheet Metal March 6, 1997 - Page 11 HOLGUIe FAHAN & ~IATES, INC. ENVIRONMENTAL MANAGEMENT CONSULTANTS Mr. Jc ~nd Mrs. Deanna J. McCauley California Sheet Metal March 6, 1997 - Page 12 0 HOLGUIe FAHAN & ASSOCIATe, INC. ENVIRONMENTAL MANAGEMENT CONSULTANTS ATTACHMENT 1. SUMMARY OF PREVIOUS WORK EUREKA STREET SIDEWALK T '"" GAT'~..~ CHAIN-LINK FENCE CO CALl FORNIA Z SHEET METAL rr BUILDING '~' CONCRETE SLAB ~ CANOPY , ~ B-5 ._l g _z B-1 c3_ z ..... u~ ~: B-2 ' ~ LIMIT OF \. / TANK EXCAYATION B-4 SCALE IN FEET ~ CHAIN-LINK FENCE 0 10 20 B-7 ALLEY LEGEND MR. JOHN M. AND MRS. DEANNA J. McCAULEY '~' SOIL BORING CALIFORNIA SHEET METAL 601 EUREKA STREET BAKERSFIELD, CALIFORNIA FIGURE 1 - PLOT PLAN HOLGUIN, FAHAN & ASSOCIATES, INC. REVISION DATE: OCTOBER 11, 1996: RRI TABLE 1. SUMMARY OF SOIL SAMPLE ANALYTICAL RESULTS FOR TANK REMOVAL CALIFORNIA SHEET METAL, BAKERSFIELD, CALIFORNIA SAMPLE DATE SAMPLE TPH AS ETHYL- TOTAL SOURCE SAMPLED DEPTH I.D. GASOLINE BENZENE TOLUENE BENZENE XYLENES REF (fbg) (mg/kg) (mg/kg) (mg/kg) (mg/kg) (mg/kg) EPA ANALYTICAL METHOD 8015 (M) 8020 N/A MINIMUM REPORTING LEVEL 1.0 0.0051 0.005 0.005 0.005 N/A S-1 12-17-91 8 [ S-1-8 810 44 170 19 153 A S-2 12-17-91 12I S-2-12 10,000 98 275 23 290 A REF = Report reference. N/A = Not applicable. A = Calpi, Inc.'s, report dated September 1992. TABLE 2. SUMMARY OF SOIl- SAMPLE ANALYTICAL RESULTS CALIFORNIA SHEET METAL, BAKERSFIELD, CALIFORNIA SAMPLE DATE i SAMPLE TPH AS ETHYL- TOTAL TOTAL ORGANIC SOURCE SAMPLED DEPTH , I.D. GASOLINE BENZENE TOLUENE BENZENE XYLENES LEAD LEAD REF (fbg) I (mg/kg) (mg/kg) (mg/kg) (mg/kg) (mg/kg) (mg/kg) (mg/kg), EPA ANALYTICAL METHOD 8015 (M) 8020 7420 i N/A METHOD REPORTING LIMIT VARIES-SEE LABORATORY REPORTS I N/A B-1 3-19-92 5 ! B-1-5 6,000 ND (>20) 210 50 1,960 39 2.7 A 3-19-92 15 ! B-1-15 6,0001ND (>100)' 390 170 1,290 .... A 3-19-92 30 _ B-1-30 __ 3,100 ND(>2.0) 86 71 438 4.5 -- A 3-19-92 45 B-1-45 __ 3,000 5.0 16_0_ 75 390 -~ _ -- A 3-19-92 60 B-1-60 13,000 110 1,300 300 2,560 .... A 3-19-92 75 B-1-75 ND ND ND ND ND ND -- IA 3-19-92 80 B-1-80 ND ND ND ND NDi .... A 3-19-92 85 ! B-1-85 ND ND 0.047 ND 0.014 4.5 -- A 3-19-92 90 t B-1-90 ND 0.084 0.16 0.049 0.088 .... A B-2 3-19-92 15 t B-2-15 12,000 1,000 1,500 340 2,480_~ -- __ -- A 3-19-92 30 I B-2-30 400' 0.2 1.2 4.7 49! 3.9 -- A B-3 3-19-92 30 I B-3-30 30,000 400 3,400 800 4,300 .... IA B-4 3-19-92 30 t B-4-30 ND ND ND ND NDi .... A 3-19-92 40I B-4-40 ND ND ND ND ND .... A B-5 3-19-92 15 B-5-15 ND 0.011 0.017 ND ND .... IA 3-19-92 40 ~ B-5-40 7,000 42 540 1601 810 .... A B-6 3-19-92 20 t B-6-20 ND ND ND ND ND 3.6 -- __A 3-19-92 30 { B-6-30 ND ND NDND ND .... A 3-19-92 40 ! B-6-40 ND ND 0.008 ND 0.01 8.5 -- A S-7 3-8-93 20 1 B-7-20 ND ND ND_ ND ND .... J B 3-8-93 30 B-7-30 ND ND ND ND ND .... B 3-8-93 50 B-7-50 ND 0.064 0.029 ND 0.015 .... B B-8 3-8-93 20 I B-8-20 ND ND ND ND' ND .... B 3-8-93 35 I B-8-35 ND 0.079 0.11 ND 0.09 .... B B-9 3-8-93 30 I B-9-30 ND ND ND ND ND .... B 3-8-93 40 j B-9-40 ND ND ND ND ND .... a 3-8-93 50 ! B-9-50 ND 0.11 0.027 ND 0.045 .... B REF = Re )ort reference. N/A = Not applicable. ND = Not detected. -- = Not anah,zed. A = Wilson & Associates, Inc.'s, report dated September 1992. B = Piwarea Engineering, Inc.'s, report dated April 1993. TABLE 3. SUMMARY OF SOURCE COMPLIANCE MONITORING ANALYTICAL RESULTS CALIFORNIA SHEET METAL, BAKERSFIELD, CALIFORNIA DATE TPH AS ETHYL- TOTAL SAMPLE SOURCE SAMPLED SAMPLE I.D. GASOLINE BENZENE TOLUENE BENZENE XYLENES REF (ppmv) (ppmv) (ppmv) (ppmv) (ppmv) EPA ANALYTICAL METHOD 8015 (M) i 8020 N/A METHOD DETECTION LIMIT VARIES-SEE LABORATORY REPORTS N/A INFLUENT i 7-17-95 95-8623-2 702 33.94 83.19 5.501 42.92 A EFFLUENT 7-17-95 95-8623-1 1.4 ND 0.08 N3D2 0.14 A INFLUENT 3-6-96 96-0695 1,900. 92 210 190 B EFFLUENT 3-6-96 96-0696 NDI 0.56 0.29 0.07t 0.15 B INFLUENT I 6-27-96 t 96-0695 2,900 74 240 28t 340 C EFFLUENT 16-27-96 96-0696 10 0.19 0.1 0.051 0.12 C INFLUENT I 9-24-96 96-3134 850j 36 72 121 89 D EFFLUENT J 9-24-96 96-3135 NDt 0.228 0.142 0.01J 0.049 D REF = Report reference. N/A = Not applicable. ND = Not detected. A = Holguin, Fahan & Associates, Inc.'s (HFA's) report dated August 4, 1995. B = HFA°s report dated Apd118, 1996. C = HFA's report dated July 25, 1996. D = HFA's report dated October 14, 1996. TABLE 4. SUMMARY OF SOIL SAMPLE ANALYTICAL RESULTS FOR REMEDIATION PROGRESS ASSESSMENT CALIFORNIA SHEET METAL, BAKERSFIELD, CALIFORNIA SAMPLE DATE SAMPLE tPH AS ETHYL- TOTAL SOURCE SAMPLED DEPTH I.D. GASOLINE BENZENE TOLUENE BENZENE XYLENES REF (fbg) (rog/kg) (mg/kg) (mg/kg) (mg/kg) (rog/kg) EPA ANALYTICAL METHOD 8015 (U) 8020 N/A METHOD REPORTING LIMIT 10 0.005 0.005 0.015 0.015 N/A B-10 9-4-96 15 B-10-15 2,400 ND 200 25 300 A 9-4-96 25 B-10-25 4,200i ND 29 48 160 A 9-4-96 35 B-10-35 2,8001 14 39 49 74 A 9-4-96 45 B-10-45 190 ND 0.24 0.53 8.3 A 9-4-96 55 B-10-55 5,9~~' 8.1 50 97 160 A 9-4-96 65 B-10-65 2,600 34 140 340 320 A 9-4-96 75 B-10-75 ND ND 0.024 ND 0.037 A 9-4-96 85 B-10-85 ND 0.72 0.77 0.061 0.34 A 9-4-96 90 B-10-90 ND 0.36 0.52 0.039 0.2 A B-I~I 9-4-96 15 i B-11-15 ND ND ND ND ND A 9-4-96 30 B-11-30 260 ND 0.015 0.029 1.4 A 9-4-96 45 B-11-45 ND ND ND ND ND A 9-4-96 50 B-11-50 ND ND ND ND ND A B-12 9-4-96 10 B-12-10 ND ND ND ND ND A 9-4-96 25 B-12-25 1,400 0.0054 0.16 3.4 35 A 9-4-96 40 B-12-40 ND 0.0083 0.065 0.047 0.47 A 9-4-96 50 B-12-50 ND ND ND ND ND A REF = Re )ort reference. N/A = Not applicable. ND = Not detected. A = Holguin, Fahan & Associates, Inc.'s, current report. ENVIRONMENTAL MANAGEMENT CONSULTANTS 143 South Figueroa Street · Ventura, California 93001 (805) 652-0219 · FAX (805) 652-0793 853 West 17th Street · Costa Mesa, California 92627 (714) 642-2660 · FAX (714) 642-2544 3157 Pegasus Drive · Bakersfield, California 93308 (805) 391-0517 · FAX (805) 391-0826 July 25, 1996 Mr. John M. and Mrs. Deanna J. McCauley California Sheet Metal In Care of Mr. Patrick C. Carrick Griffin · Carrick Attorneys at Law Post Office Box 2348 Bakersfield, California 93303-2348 Subject: SECOND QUARTER 1996 REMEDIAL ACTION PROGRESS REPORT FOR CALIFORNIA SHEET METAL, 601 EUREKA STREET, BAKERSFIELD, CALIFORNIA Dear Mr. and Mrs. McCauley: Holguin, Fahan & Associates, Inc., (HFA) is pleased to present the following second quarter 1996 progress report of the ongoing remedial action being conducted at the California Sheet Metal property located at 601 Eureka Street In the city of Bakersfield, Kern County, California (see Figure 1 - Site Location Map). Remedial activities at the site have Included the operation of a VES under San Joaquln Valley Unified Air Pollution Control District - Southern Region (SJVUAPCD-SR) PTO #S-2660-1-0. The remedial activities are being required by the City of Bakersfield Fire Department Hazardous Materials Division UST Local Oversight Program (BFDHMD UST LOP) as a result of the discovery of gasoline-containing soils surrounding the former gasoline UST at the site. A work plan for verification soil sampling at the site is also included in this progress report. SITE BACKGROUND The site previously contained a single 550-gallon gasoline UST. California Sheet Metal contracted Calpl, Inc., to remove the UST on December 17, 1991. Gasoline hydrocarbon concentrations were detected in the soil samples (S-1 and S-2) collected from beneath the UST. On March 19, 1992, six soil borings (B-1 through B-6) were drilled at the site by Wilson & Associates, Inc., and on March 8, 1993, three additional soil borings (B-7 through B-9) were drilled at the site by Piwarea Engineering, Inc. The soils investigations indicated TPH as gasoline concentrations to depths less than 75 fbg and less than 45 feet laterally from the former UST location (see Attachment 1 for a summary of previous work). ENVIRONMENTAL PLANNERS · SCIENTISTS · GEOLOGISTS AND ENGINEERS Contaminated Site Assessments * Real Estate Audits * Site Remediation * Hazardous waste Management HOLGUIN FAHAN & ASS(X21ATES, INC. ENVIRONMENTAL MANAGEMENT CONSULTANTS Mr. John Mrs. Deanna J. McCauley California Sheet Metal July 25, 1996 - Page 2 On January 17 and 18, 1994, HFA drilled and installed six vapor extraction wells (VW-l'through VW-6). HFA connected the wells with 3-inch-diameter piping to a central manifold (see Figure2- Plot Plan Showing VES). On November 28, 1994, HFA acquired ATC Permit #S-2660-1-0 for a VES utilizing a King, Buck/Hasstech, Inc., 150-scfm direct-fired thermal oxidizer far the in-situ vapor extraction of volatile hydrocarbons in the soils at the site. Subsequently, the system was delivered and installed at the site (see Figure 2 and Figure 3 - VES Schematic Diagram). On July 17, 1995, HFA conducted a source test of the treatment unit in compliance with the requirements of the ATC permit. Based on the vapor sampling and analytical results, the efficiency of the direct-fired, thermal oxidation system was greater than 99.8 percent, the maximum VOC emission was 1.4 ppmv, and the benzene emission was less than 0.03 ppmv. Therefore, the source test demonstrated compliance with the conditions of the ATC permit (see Table 1 Summary of Source Compliance Monitoring Analytical Results). HFA subsequently requested that the ATC permit be upgraded to a PTO. During the first 4 weeks of operation, high VOC concentrations and oxygen deficiency in the soil caused the unit to frequently shut down. During this time, vapor wells VW-1 and VW-2 were used as extraction wells while vapor wells VW-3 through VW-6 were used as air inlet wells, and the dilution air valve was completely open. As soil conditions improved, dilution air was slowly decreased until no dilution air was required, and well VW-3 was brought on line as an extraction well. HFA has operated the unit 24 hours per day since August 14, 1995, with only short periods of inactivity for maintenance, draining of the knockout pot, and a few occurrences when the system has shut down. On March 6, 1996, HFA collected influent and effluent vapor samples, which were analyzed for TPH as gasoline and BTEX. The inlet vapor concentration was 1,900 ppmv for the March 6, 1996, sampling event (see Table 1). VES REPORT FOR THE SECOND QUARTER OF 1996 On June 27, 1996, HFA collected influent and effluent vapor samples and submitted them to HFA Environmental Laboratories, Inc., for analysis. The samples were analyzed for TPH as gasoline and BTEX using EPA Methods 8015 (M) and 8020, respectively. The inlet vapor concentration was 2,900 ppmv for the June 27, 1996, sampling event (see Table 1 and Attachment 2 for the laboratory report). During the second quarter of 1996, inlet vapor concentrations have been reduced from a maximum concentration of 3,800 ppmv to a minimum concentration of 500 ppmv (see Figure 4 - Influent and Effluent TPH Concentrations and Table 2 - Summary of VES Monitoring Data). The.system shutdowns, which ocpurred frequently during the second quarter HOLGUIN FAHAN & ASSOCIATES, INC. ENVIRONMENTAL MANAGEMENT CONSULTANTS Mr. John Mrs. Deanna J. McCauley California Sheet Metal July 25, 1996 - Page 3 of 1996, appear to be related to the diminished volume of hydrocarbons remaining in the subsurface. After a Shutdown occurs, the VOCs recharge into the more permeable sediments. Initially after the system is restarted, the concentrations of VOCs extracted are relatively high. However, the concentrations of VOCs extracted drops off rapidly until shutdown again occurs. This cycle was repeated frequently during the second quarter of 1996. The inlet soil vapor flow rate.has been maintained near the maximum stated in the ATC permit and ranges from 60 to 120 scfm. HFA estimates the mass of gasoline hydrocarbons extracted from the subsurface since start-up to be approximately 12,684 pounds, which is equivalent to approximately 1,982 gallons of gasoline (see Figure 5 - Cumulative Extraction Curve and Table 2). However, with the diminished volume of hydrocarbons in the subsurface and the frequent system shutdowns, only 615 pounds of hydrocarbons was removed during the second quarter of 1996. CONCLUSIONS AND RECOMMENDATIONS In accordance with the Lawrence Livermore National Laboratory's Recommendations to Improve the Cleanup Process for California's Leaking Underground Fuel Tanks report dated October 16, 1995, and the State Water Resources Control Board's Underground Storage Tank Cleanup. Fund Technical Review Guidance Document No. 4 dated December 27, 1995, Mr. John M. and Mrs. Deanna J. McCauley request that the BFDHMD UST LOP provide written guidance pertaining to the additional remediation activities required at the site. Approximately 1,982 gallons of gasoline has been extracted at the site slnce start-up. With the diminished volume of hydrocarbons in the subsurface, frequent system shutdowns are occurring, and only 615 pounds of hydrocarbons were removed during the second quarter of 1996. Therefore, on behalf of the property owners, Mr. and Mrs. McCauley, HFA recommends that three soil borings be advanced in and around the location of the former USTs to confirm that BFDHMD UST LOP cleanup levels have been achieved at the site. WORK PLAN FOR VERIFICATION SOIL SAMPLING DESCRIPTION OF WORK TO BE PERFORMED Prior to any intrusive methods being conducted at the site, Underground Service Alert of Northern California will be utilized to map out the underground structures, Based on the clearances obtained, HFA will site the soil borings in safe locations. HOLGUIN FAHAN & AS.SOC T , INC. ENVIRONMENTAL MANAGEMENT CONSULTANTS Mr. John Mrs. Deanna J. McCauley California Sheet Metal July 25, 1996 - Page 4 HFA proposes to drill three soil borings (B-10 through B-12) to a maximum depth of 70 fbg at the site. Soil boring B-10 will be drilled to a depth of 70 fbg through the center of the area formerly containing the greatest concentrations of gasoline-containing soils, and soil borings B-11 and B-12 will be drilled to a depth of 50 fbg at locations approximately 20 feet to the northwest and southeast, respectively, of the former UST (see Figure 2 for proposed soil boring locations). The soil borings will be drilled with an 8-inch-OD hollow-stem auger, and soil samples will be collected at 5-foot intervals using a California modified split-spoon sampler. During the drilling process, soil cuttings, as well as each soil sample, will be continuously monitored for volatile hydrocarbon concentrations with the use of visual identification and a PID. Soils will be classified according to the Unified Soil Classification System by an experienced environmental geologist under the direct supervision of a state of California registered geologist, and all data will be recorded on logs of exploratory borings. Soil samples will be wrapped in TeflonTM, followed by close-fitting plastic caps, and held at a temperature of 4°C while in the field and in transit to the laboratory (see Attachment 3 for the soil boring and sampling procedures), Soil samples will be collected at 5-foot intervals, and selected soil samples (approximately 16) will be analyzed by a California state-certified laboratory for TPH as gasoline and BTEX using EPA Methods 8015 (M) and 8020, respectively. Sampling equipment will be decontaminated using a non-phosphate, soap and water wash; a tap water rinse; and two distilled, deionized water rinses. The hollow-stem auger will be decontaminated in a similar manner. All contaminated soils will be stored on site in 55-gallon Department of Transportation-approved drums, pending laboratory analytical results. If contaminated, the waste will be hauled off site for disposal at an appropriate facility. A health and safety plan has been developed by HFA's industrial hygienist for site investigations. Procedures for conducting all work are outlined in this plan, and site-specific information is provided on its cover page (see Attachment 4 for the health and safety plan). Work will begin in July 1996, subsequent to the acceptance of this work plan by the BFDHMD UST LOP. The BFDHMD UST LOP will be notified at least 48 hours before any on-site work commences. A site remediation verification soil assessment report will be submitted to the BFDHMD UST LOP approximately 4 weeks after commencement of the work. HOLGUIN FAHAN -& ASSCK21ATES, INCi ENVIRONMENTAL MANAGEMENT CONSULTANTS Mr. John Mrs. Deanna J. McCauley California Sheet Metal July 25, 1996 - Page 5 ACTIVITIES PLANNED FOR THE THIRD QUARTER OF 1996 The following activities will be Completed during the third quarter of 1996: · continue tull-time operation of the VES unit; and conduct Verification drilling during July 1996, pending authorization from the BFDHMD UST LOP. Holguin, Fahan & Associates, Inc., trusts that you will find this second quarter 1996 remedial action progress report to your satisfaction. If you have any questions or require additional information, please contact Mr. Mark Magargee at (805) 391-0517 or at e-mail address Mark_Magargee@hfa.com. Respectfully submitted, 'Eric E. Casterline ~-~ Environmental Technician Holguin, Fahan & Associates, Inc. MRM:rri:jac Enclosures: Figure 1 Figure 2 Figure 3 Figure 4 Figure 5 Table 1 Table 2 Attachment 1 Attachment 2 Attachment 3 Attachment 4 Site Location Map Plot Plan Showing VES VES Schematic Diagram Influent and Effluent TPH Concentrations Cumulative Extraction Curve Summary of Source Compliance Monitoring Analytical Resul Summary of VES Monitoring Data Summary of Previous Work Laboratory Report Soil Boring and Sampling Procedures Health and Safety Plan Mark R. Magargee, CHG, R~ ~- - Senior Hydrogeologist Holguin, Fahan & Associates, Inc. cc: Mr. Howard H. Wines, III, BFDHMD UST LOP Mr. Patrick C. Carrick, Griffin · Carrick HOLGUIN FAHAN & IATF_ , INC. ENVIRONMENTAL MANAGEMENT CONSULTANTS Mr. John Mrs. Deanna J. McCauley California Sheet Metal July 25, 1996 - Page 6 SITE LOCATION : t 5 4 LEGEND 0 0.5 1 Mit. f- l. '! .:.1' l- . .t I :..I '.. l.'...I' I ' .I 0 ,.OEO 2.000 3.0(10 4.O~0 5.0(X) I:d. I'I~]Ct -' "I'_-- . :'-t "' . .:'l.:~ -: . 0 0.5 1 KII.OMI l: _.1:::t_. I~..:.1 .L'. I' I -I t .;:J USGS C~.)SrOItEltl AMONItOII CI Nil tltOll DAI MR. JOHN M. AND MRS. DEANNA J. McCAULEY CALIFORNIA SHEET METAl. 601 EUREKA STREET BAKERSFIELD, CALIFORNIA FIGURE 1 - SITE LOCAIION MAt:' HOLCUIN. FAIt/tN & ASSOCIATES, INC. HOLGUIN FAI-~N &/kSSOCIATES, INC. ENVIRONMENTAL MANAGEMENT CONSULTANTS Mr. John Mrs. Deanna J. McCauley California Sheet Metal July 25, 1996 - Page 7 EUREKA STREET SIDEWALK ~- J-- CHAIN-LINK FENCE LI.I 03 CALIFORNIA Z SHEET METAL rr BUILDING ~ CONCRETE SLAB ' LIMIT OF ~7'.~ ~ GASOLINE-CONTAINING CANOPY ' SOILS UJ [ZO / B-11 i _ Ii wv: i B-10 VES ~__~ MANIFOLD ~ ~ N CHAIN-LINK FENCE SCALE IN FEET ALLEY 0 10 20 LEGEND MR. JOHN M. AND MRS. DEANNA J. McCAULEY CALIFORNIA SHEET METAL ~ VAPOR EXTRACTION WELL 601 EUREKA STREET "". VES PIPING BAKERSFIELD, CALIFORNIA ~" FIGURE 2 - PLOT PLAN SHOWING VES ~ PROPOSED SOIl_ BORING LOCATION ~O~O~, ~ · ~SOC~TES, ~C. REVISION DATE: JULY 5, 1996: RRI HOLGUIN FAHAN & ASSOC~T~, INC. ENVIRONMENTAL MANAGEMENT CONSULTANTS Mr. John ~nd Mrs. Deanna J. McCauley California Sheet Metal July 25, 1996 - Page 8 <150 VW-1 VW-2 VW-3 VW-4 VW-5 VW-6 'X ATMOSPHERE · ( ) KNOCK-OUT DRUM INFLUENT MONITORING POINT I BLOWERWITH <150 scfm SILENCER SUPPLEMENTAL FUEL EFFLUENT MONITORING POINT THERMAL/ CATALYTIC OXIDIZER NOT TO SCALE LEGEND PRESSURE OR VACUUM GAUGE VALVE FLOW GAUGE SAMPLE TAP REVISION DATE: FEBRUARY 8, 1996: RRI MR. JOHN M. AND MRS. DEANNA J. McCAULEY CALIFORNIA SHEET METAL 601 EUREKA STREET BAKERSFIELD, CALIFORNIA FIGURE 3 - VES SCHEMATIC DIAGRAM HOLGUIN, FAHAN & A~8,OCIATES, INC. HOLGUIN FAHAN & ASSOCIATES, INC. ENVIRONMENTAL MANAGEMENT CONSULTANTS Mr. John d Mrs. Deanna J. McCauley California Sheet Metal July 25, 1996 - Page 9 FIGURE 4 - INFLUENT AND EFFLUENT TPH CONCENTRATIONS 10,000 ...... --+--- TPH In .!--- - TPH Out I __ ~ 4~- , -_._ 1,000 100 10 1 0.1 0 5 10 15 20 25 30 Cumulative Operating Weeks HOLGUIN FAHAN & ASSOCIATe, INC. ENVIRONMENTAL MANAGEMENT CONSULTANTS Mr. John Ind Mrs. Deanna J. McCauley California Sheet Metal July 25, 1996 - Page 10 FIGURE 5 - CUMULATIVE EXTRACTION CURVE 15,000 10,000 5,000 0 0 5 10 15 20 25 Cumulative OPerating Weeks 30 HOLGUIN FAHAN & ASSOCIATES, INC. ENVIRONMENTAL MANAGEMENT CONSULTANTS Mr. John Mrs. Deanna J. McCauley California Sheet Metal July 25, 1996 - Page 11 TABLE 1. SUMMARY OF SOURCE COMPLIANCE MONITORING ANALYTICAL RESULTS CALIFORNIA SHEET METAL, BAKERSFIELD, CALIFORNIA i DATE TPH AS I ETHYL- TOTAL SAMPLE SOURCE SAMPLED SAMPLE I.D. GASOLINE BENZENE TOLUENE BENZENE XYLENES REF ! (ppmv) (ppmv) (ppmv) (ppmv) , (ppmv) EPA ANALYTICAL METHOD ! 8015 (a) I 8020 N/A METHOD DETECTION LIMIT i VARIES-SEE LABORATORY REPORTS N/A INFLUENT i 7-17-95 I 95-8623-2 i 7021 33.94 83.19! 5.50 42.92 A EFFLUENT 7-17-95 95-8623-1 i 1.4 ND 0.08 ND 0.14 A INFLUENT 3-6-96 96-0695 I 1,900 92 210 32 190 B EFFLUENT ! 3-6-96 96-0696 i ND 0.56 0.29 0.07~ 0.15 B INFLUENT i 6-27-96 96-0695 I 2,9001 74 240 281 340 C EFFLUENT i 6-27-96 I 96-0696I 101 0.19 0.11 0.05I 0.12 C REF = Report reference. N/A = Not applicable. ND = Not detected. A = Holguin, Fahan & Associates, Inc.'s (HFA's) report dated August 4, 1995. B = HFA's report dated Apd118, 1996. C = HFA's current report. HOLGUIN FAHAN & A~SOCIATES, INC. ENVIRONMENTAL MANAGEMENT CONSULTANTS Mr. John Mrs. Deanna J. McCauley California Sheet Metal July 25, 1996 - Page 12 ~~ ..... ~ ~~ . ,~~ . ~ ........... ~11 ItI II IIt It IIIII tlI IIIO~ ~O~O0 ~o ~ ~e e ~ e e ~ ° m:° e ~ ° o e e ~ e e ° e ~ e e ~ e D O D D O D O D D O ~ ° e O ~ D O~D O O D OO ~eelee lee il ieee° leDOODOD DODODDODODDODODee ~eeleeeee ~ie e ° ~ o D O D D ~ e ° e O O D O D D O D O D D O:D O O D D O O D O D O DO O D O D D O:D ~ O o' ~lo~ o~o~:o~oo~oo:o:~oo:o*******'**i~°*l'*'***°~° O0 O HoLGuIN,~ FAHAN & ~IATF_~, INC. ENVIRONMENTAL MANAGEMENT CONSULTANTS Mr. John Mrs. Deanna J. McCauley California Sheet Metal July 25, 1996 - Page 13 >~ O~ HOLGUIN,I FAHAN & ASSC~IATES, INC. ENVIRONMENTAL MANAGEMENT CONSULTANTS ATTACHMENT 1. SUMMARY OF PREVIOUS WORK EUREKA STREET SIDEWALK CALIFORNIA SHEET METAL BUILDING CONCRETE SLAB ~ qANOPY B-9 B-8 B-6 -J LIMIT OF \... ,' TANK EXCAVATION B-4 SCALE IN FEET CHAIN-LINK FENCE 0 10 20 B-7 ALLEY LEGEND MR. JOHN M. AND MRS. DEANNA J. McCAULEY SOIL BORING CALIFORNIA SHEET METAL 601 EUREKA STREET BAKERSFIELD, CALIFORNIA FIGURE 1 - PLOT PLAN REVISION DATE: FEBRUARY 8, 1996: RRI TABLE 1. SUMMARY OF SOIL SAMPLE ANALYTICAL RESULTS FOR TANK REMOVAL CALIFORNIA SHEET METAL, BAKERSFIELD, CALIFORNIA SAMPLE DATE SAMPLE tPh AS ETHYL- TOTAL SOURCE SAMPLED DEPTH I.D. GASOLINE BENZENE TOLUENE BENZENE XYLENES REF (fbg) i (mg/kg) (mg/kg) (mg/kg) (mg/kg) (mg/kg) r EPA ANALYTICAL METHOD 8015 (M) 8020 N/A MINIMUM REPORTING LEVEL 1.0 0.005 0.0051 0.0051 0.005N/A S-1 12-17-91 t 8 S-1-8 810 44 170_ 19 153 A [ REF = Report reference. N/A = Not applicable. A = Calpi, Inc.'s, report dated September 1992. TABLE 2. SUMMARY OF SOIL SAMPLE ANALYTICAL RESULTS CALIFORNIA SHEET METAL, BAKERSFIELD, CALIFORNIA SAMPLE DATE SAMPLE TPH ASIi ETHYL- TOTAL TOTAL ORGANICI SOURCE SAMPLED DEPTH I.D. GASOLINE'BENZENE TOLUENE BENZENE XYLENES LEAD LEAD REF (fbg) , (rog/kg) (rog/kg) (mg/kg) (rog/kg) (mg/kg) (mg/kg) (mg/kg) i 7420 N/A EPA ANALYTICAL METHOD 8015 (M) 8020 METHOD REPORTING LIMIT VARIES-SEE LABORATORY REPORTS N/A B-1 3-19-92 5 B-1-5 6,000 ND(>20)I 210 50 1,9601 39 2.7 A 3-19-92 15 B-1-15 6,000 ND (>100) 390 170 1,290 .... A 3-19-92 30 B-1-30 3,100 ND (>2.0~)_ 86 71 438 4.5 -- A 3-19-92 45 B-1-45 3,000 5.0 160 75 390i .... A 3-19-92 60 B-1-60 13,000 110 1,300 300 2,560 .... 3-19-92 75 9-1-75 ND NDI ND ND ND ND -- A 3-19-92 80 9-1-80. ND NDI ND ND ND .... 3-19-92 90 B-1-90 ND 0.16 0.049 0.088 .... A B-2 3-19-92 15 9-2-15 12,000 1,000_j_ 1,500 340 2,480 .... A 3-19-92 30 B-2-30 400 0.21 1.2 4.7 49 3.9 -- A B-3 3-19-92 30 B-3-30 30,000 4001 3,400 800 4,300 .... A B-4 3-19-92 30 B-4-30 ND ND ND ND ND .... A 3-19-92 40 9-4-40 ND ND ND ND ND .... A B-5 3-19-92 15 B-5-15 ND 0.011 0.017 ND ND .... A 3-19-92 40 I B-5-40 7,000 42 540 160 8101 .... A B-6 3-19-92 20 I B-6-20 ND ND ND ND ND 3.6 -- A 3-19-92 30i B-6-30 ND ND ND ND ND .... A 3-19-92 40 B-6-40 ND ND 0.008 ND 0.01 8.5 -- A 3-8-93 30 ] B-7-30 ND ND ND ND .... B 3-8-93 50 i 9-7-50 ND 0.029 ND 0.0151 .... B B-8 3-8-93 20,i B-8-20 ND ND ____ ND ND ND1 .... B 3-8-93 35 -~ B-8-35 ND 0.0791' 0.11 ND 0.09 -- -- -- B B-9 3-8-93 30 / B-9-30 ND ND ND ND ND .... B 3-8-93 40I B-9-40 ND ND ND ND ND --__i -- B 3-8-93 50 ] B-9-50 ND 0.111 0.027 ND 0.0451 .....l [ B REF = Re ~ort reference. N/A = Not applicable. ND = Not detected. -- = Not anal,fzed. A = Wilson & Associates, Inc.'s, report dated September 1992. B = Piwarea Engineering, Inc.'s, report dated Apd11993. HOLGUIN, FAHAN & ASSOCIATES, INC. ENVIRONMENTAL MANAGEMENT CONSULTANTS ATTACHMENT 2. LABORATORY REPORT HoLG N, FAHAN & ENVIRONMENTAL LABORATORIES , INC. July 10, 1996 t 43 Souih Figueioa Sheel · Veniula, Calilolnia 93001 · (805) 652-0219 · FAX: (805) 652-0793 REPORT OF ANALYTICAL RESULTS CLIENT: John & Deanna McCauley John & Deanna McCauley Post Office Box 2348 Bakersfield CA 93303-2348 PROJECT: California Sheet Metal Page 1 Analyzed By: V. de Vera Sampled By: E. Casterline Units: p~ v/v Analyses Method: BTEX: EPA 8020 TPH: 8015-M CONCENTRATION OF TOTAL PETROLEUM HYDROCARBONS (TPH) WITH BTEX DISTINCTION CONSTITUENT TPB- TPB- Ethyl Total Percent Lab Sample Dates Sampled, Gas Diesel Benzene Toluene Benzene Xylenes MTBE Surrogate No. No. Received and Tested MRL MRL MRL M~L MRL MRL MRL Recover~ 961830 lnfluent 6/27/96 6/27/96 6/28/96 2900 74 240 28 340 132% 10 .03 .01 .01 .04 961831 E~fluent 6/27/96 6/27/96 6/28/96 10 .19 .1 .05 .12 114% 10 .01 .01 .01 .04 MRL = Method Reporting Limit ND = Not Detected at or above MRI, Lab Certification: CAELAp 1/31/96 HOLGUIN, FAHAN & ASSOCIATES, INC. ENVIRONMENTAL LABORATORIES 2550 Eastman Ave., Unit I Ventura, CA 9300.~¥(80_ ) 650-7750¥FAX (805) 6>0-6810 Report Date: QC Batch ID: Instrument ID: 5-Ju1-96 MBA 6/28/96 HP5890 GC-2 METHOD BLANK REPORT REPORT OF ANALYTICAL RESULTS Date Analyzed: Analyzed By: Analysis Method: 2S-Jun-96 K. Po, or EPA 8020 CONCENTRATION OF TOTAL PETROLEUM HYDROCARBONS (TPH) WITH BTEX DISTINCTION in ppm v/v (air) Lab No. TPH- Ethyl Total Client Gasoline Benzene Toluene Benzene Xylenes Sample ID. Matrix MR/_ MRL MRL MRL MRL MBA 6~28~96 Method Blank Air ND ND ND ND ND 10 0.01 0.01 0.01 0.04 Volatile fuel hydrocarbonsare quantitated against a gasoline standard. Hydrocarbons detected by t,his method range from 06 to C15. Analytes reported as ND were not present above l,he stated limit of detection. MRL = Method reporting Limit ND = Not detected at or above MRL LAB CERTIFICATION: CAEI~AP 111878; ]/3]/96 0 HOLGUIN FAHAN & ASSOCIATES, INC. ENVIRONMENTAL MANAGEMENT CONSULTANTS ATTACHMENT 3. SOIL BORING AND SAMPLING PROCEDURES SOIL BORING AND SAMPLING PROCEDURES HAND-AUGERING PROCEDURES Each soil boring is manually drilled utilizing an 2-inch-OD hand auger manufactured by Xitech Industries. Soil samples are collected with a drive sampler, which is outfitted with 1.5-inch by 3-inch stainless steel or brass sleeves. When the sample is withdrawn, the ends of the sleeve are covered with aluminum foil or TeflonTM tape followed by plastic caps. During the drilling process, soil cuttings are field screened for VOCs using a PID calibrated to 100 ppmv isobutylene. Any soil staining or discoloration is visually identified. All data is recorded on logs of exploratory borings under the supervision of a state of California registered geologist. Soils are classified according to the Unified Soil Classification System (USCS). Specific geologic and hydrogeologic information collected includes depth to groundwater, plasticity, density, stiffness, mineral composition, moisture content, soil type, structure, grain size, and other features that could affect contaminant transport. The samples are labeled, sealed, recorded on a chain-of-custody record, and chilled in accordance with the procedures outlined in the State Water Resources Control Board's (SWRCB's) LUFT field manual. Sample preservation, handling, and transportation procedures are consistent with Holguin, Fahan & Associates, Inc.'s (HFA's) QA/©C procedures. The samples are transported in a chilled container to a California state-certified hazardous waste testing laboratory. TRUCK-MOUNTED DRILLING AND SOIL SAMPLING PROCEDURES Underground Service Alert of Northern California is notified at least 48 hours before drilling activities commence. Each soil boring is manually drilled for the first 4 feet to establish that the area is clear of subsurface structures. The soil borings are drilled with either a hollow-stem auger or an air rotary bit, and soil samples are collected with a California modified split-spoon sampler. The sampler is outfitted with 2.5-inch by 6-inch stainless steel or brass sleeves. When the sample is withdrawn, the ends of the sleeve are covered with aluminum foil or TeflonTM tape followed by plastic caps. During the drilling process, soil cuttings are field screened for V©Cs using a PID calibrated to 100 ppmv isobutylene. Any soil staining or discoloration is visually identified. All data is recorded on logs of exploratory borings under the supervision of a state of California registered geologist. Soils are classified according to the USCS. Specific geologic and hydrogeologic information collected includes depth to groundwater, plasticity, density, stiffness, mineral composition, moisture content, soil type, structure, grain size, and other features that could affect contaminant transport. The samples are labeled, sealed, recorded on a chain-of-custody record, and chilled in accordance with the procedures outlined in the SWRCB's LUFT field manual. Sample preservation, handling, and transportation procedures are consistent with HFA's QA/QC procedures. The samples are transported in a chilled container to a California state-certified, hazardous waste testing laboratory. Soil g and Sampling Procedures Page 2 DECONTAMINATION PROCEDURES Before each sampling episode, the sampling equipment is decontaminated using a non-phosphate soap and water wash, a tap water rinse, and two deionized water rinses. The drill string is decontaminated with a steam cleaner between each soil boring. WASTE MANAGEMENT AND DISPOSAL The cuttings from the soil borings are stored at the site of generation in a covered stockpile until sample analytical results are obtained, at which time the soil is disposed of appropriately. SOIL BORING ABANDONMENT PROCEDURES Each soil boring will be backfilled with bentonite grout, neat cement, concrete, or bentonite chips with a permeability less than that of the surrounding soils. The grout is placed by the tremie method. DATA REDUCTION The data compiled from the soil borings is summarized and analyzed. A narrative summary of the soil characteristics is also presented. The logs of exploratory borings are checked for the following information: · correlation of stratigraphic units among borings; · identification of zones of potentially high hydraulic conductivity; · identification of the confining formation/layer; · indication of unusual/unpredicted geologic features (fault zones, fracture traces, facies changes, solution channels, buried stream deposits, cross-cutting structures, pinchout zones, etc.); and · continuity of petrographic features such as sorting, grain-size distribution, cementation, etc. Soil boring locations are plotted on a properly scaled map. If appropriate, soil stratigraphy of the site is presented in a scaled cross section. Specific features that may impact contaminant migration (e.g., fault zones or impermeable layers) are discussed in narrative form and supplemented with graphical presentations as deemed appropriate. HOLGUIN FAHAN & ASSOC~T~, INC. ENVIRONMENTAL MANAGEMENT CONSULTANTS AI"rACHMENT 4. HEALTH AND SAFETY PLAN HEALTH AND SAFETY PLAN FOR UNDERGROUND STORAGE TANK SITE REMEDIATIONS SITE-SPECIFIC INFORMATION Site Address: 601 Eureka Street, Bakersfield, California Name of Business Occupying Site: California Sheet Metal Owner Name: Mr. John M. and Mrs. Deanna J. McCauley Owner Contact: Mr. Patrick C, Carrick Tel, #: (805) 635-3000 BFDHMD Project Manager: Mr. Howard H. Wines, III Tel. #: (805)326-3979 FIELD ACTIVITIES AND GOALS OF THIS INVESTIGATION: Drill three soil borings to assess cleanup of gasoline-containing soils KNOWN HAZARDS AT THE SITE INCLUDE: Gasoline hydrocarbons KEY PERSONNEL AND RESPONSIBILITIES: NAME RESPONSIBILITIES Kenneth J. Mitchell, REA (805) 391-0517 SITE SAFETY OFFICER - Primarily responsible for site safety, response operations, and protection of the public. Responsible for work site inspections to identify particular hazards and define site security. Mark R. Magargee, CHG, RG (805) 391-0517 Kenneth J. Mitchell, REA (8[]5)~1~17 PROJECT MANAGER - Primarily responsible for site characterization. The project manager delineates authority, coordinates activities and functions, and directs activities related to mitigative efforts of clean-up contractors. SITE INVESTIGATIVE PERSONNEL - Responsible for actual field work including sampling, monitoring, equipment use, and other related tasks as defined by the project manager. ANTICIPATED WEATHER CONDITIONS FOR THIS AREA DURING THE PROJECT"S DURATION WILL BE: Temp. range: 80-100~F Humidity: 20-40% Ambient temp.: 90~F Potential for heat stress: High: X Medium: Low: ANTICIPATED PROTECTION LEVEL DURING THIS PROJECT* "D" *Will be upgraded or downgraded to fit situations as they arise. EMERGENCY INFORMATION: All emergency calls: 911 Closest hospital with emergency room: 1830 Flower Street, Bakersfield, (805) 326-2000 Kern Medical Center Map Showing Route from Site to Hospital Attached? Yes: X No: HEALTH AND SAFETY PLAN FOR UNDERGROUND STORAGE TANK SITE INVESTIGATIONS This document outlines Holguin, Fahan & Associates, Inc.'s (HFA's) health and safety plan for City of Bakersfield UST site investigations. Site-specific information is provided on the cover page of this document. This health and safety plan was developed by HFA's industrial hygienist through consultation of the following documents: · OSHA 29 CFR 1910 ~ "Hazardous Waste Operations and Emergency Response, Final Ruling," March 1989; · NIOSH/OSHA/USCG/EPA "Occupational Safety and Health Guidance Manual for Hazardous Waste Site Activities," October 1985; and · HFA's Corporate Standard Safety Program. This health and safety plan is divided into the following categories: 1. Job Hazard Assessment 2. Exposure Monitoring Plan 3. Personal Protective Equipment 4. Work Zones and Security Measures 5. Decontamination and Disposal 6. Worker Training 7. Emergency Procedures 1. JOB HAZARD ASSESSMENT Immediate tasks at any leaking UST site include an evaluation of any present or potential threat to public safety. Questions need to be answered regarding the dangers of significant vapor exposures and potential explosion hazards. POTENTIAL CHEMICAL HAZARDS The chemical components of gasoline that are the most dangerous to site workers are the volatile aromatics benzene, toluene, ethylbenzene, xylene, and potentially, organic lead. Additionally, solvents such as 1,2-dichlorobenzene and 1,2-dichloroethane may also be used as cleaning solutions at service stations. The primary health risks associated with each of these chemicals are described below. Gasoline - Suspected human carcinogen. A TLV of 300 ppm or 900 mg/m3 has been assigned to gasoline. This value of 300 ppm was assigned based on an average of 3 percent benzene concentration (10 ppm TLV) in gasoline. Low-level inhalation exposure to gasoline can cause irritation to the eyes, nose, and respiratory system; headache; and nausea, Health and Safety Plan Page 2 Benzene - Suspected human carcinogen. A TLV of 10 ppm or 30 mg/m3 has been assigned to benzene. Benzene has a Iow odor threshold limit of 1.4 ppm. Low-level inhalation exposure to benzene can cause irritation to the eyes, nose, and respiratory system; headache; and nausea. Toluene - A TLV OF 100 ppm or 375 mg/m3 has been assigned to toluene. Toluene has a Iow odor threshold limit of 2.1 ppm. Low-level inhalation exposure to toluene can cause fatigue, weakness, confusion, and euphoria. Eth¥1benzene - A TLV of 100 ppm or 435 mg/m3 has been assigned to ethylbenzene. Ethylbenzene has a Iow odor threshold limit of 2 ppm. Low-level inhalation exposure to ethylbenzene can cause irritation to the eyes and mucous membranes. Xylene - A TLV of 100 ppm or 435 mg/m3 has been assigned to xylene. No Iow odor threshold limit has been established for xylene. Low-level inhalation exposure to xylene can cause dizziness, excitement, and drowsiness. 1.2-Dichlorobenzene A TLV of 50 ppm or 306 mg/m3 has been assigned to 1,2-dichlorobenzene. 1,2-dichlorobenzene has a Iow odor threshold limit of 4.0 ppm. Acute vapor exposure can cause coughing, dizziness, drowsiness, and skin irritation, 1,2-Dichloroethane - A TLV of 200 ppm has been assigned to 1,2-dichloroethane. No data is available concerning odor threshold. Acute vapor exposure can cause coughing, dizziness, drowsiness, and skin irritation. Tetraethyl Lead - A TLV of 0.1 mg/m3 has been assigned to tetraethyl lead. Tetraethyl lead is a colorless or red-dyed liquid at atmospheric conditions, No data is available concerning odor threshold. Acute vapor exposure can cause insomnia, delirium, coma, and skin irritation. POTENTIAL PHYSICAL HAZARDS Trenching - Dangerously high fuel vapor levels will be monitored using an LEL meter. The presence of underground utilities is also a concern, and Underground Service Alert will be notified in advance of any trenching work for identification of all underground utilities in the immediate area. Drilling - Dangerously high fuel vapor levels will be monitored using an LEL meter. The presence of underground utilities is also a concern, and Underground Service Alert will be notified in advance of any drilling work for identification of all underground utilities in the immediate area. Health and Safety Plan Page 3 Sampling - Use of personal protective equipment will minimize possible harmful exposure to personnel conducting site investigation activities. Heat stress will be monitored by each individual and controlled through regular work breaks as outlined in the American Conference of Governmental Industrial Hygienists' TLV's for heat stress conditions. 2. EXPOSURE MONITORING PLAN Potential exposure hazards found at UST sites primarily include toxic airborne vapors from leaking USTs. The most dangerous airborne vapor likely to be encountered during a UST investigation is benzene. Gasoline vapor concentration levels will be monitored in the breathing zone with a PID calibrated to benzene. When the action level of 150 ppm (half the TLV of gasoline) is detected in the breathing zone, respiratory protection in the form of full-face or half-face respirators with organic vapor cartridges will be required. Monitoring for combustible gases will also be performed using an LEL meter when vapor concentrations above 2,000 ppm are detected with the PID. The action level is 35 percent of the LEL for gasoline vapors or 4,500 ppm. If this level is attained or exceeded, the work party will IMMEDIATELY be withdrawn. 3. PERSONAL PROTECTIVE EQUIPMENT The level of protection during the site investigation will usually be level "D." Level "D" protective equipment includes coveralls, safety boots, safety glasses, gloves, and hard hats if drilling or trenching operations are in progress. Upgrading the protection level would be based on airborne benzene concentration levels equal to or exceeding the action level. An upgrade to level "C" protection would be required if the action level is equaled or exceeded. Additional equipment required for lever "C" would be a full-face or half-face, air purifying canister-equipped respirator and Tyvek suits with taped arm and leg seals. If the action level was met or exceeded (35 percent) for the LEL, work would cease until the vapor level is measured to be below 20 percent of the LEL. A fire extinguisher will be maintained on site. Decisions for workers' safety are based on a continual evaluation of existing or changing conditions. Health and Safety Plan Page 4 4. WORK ZONES AND SECURITY MEASURES To facilitate a minimum exposure to dangerous toxic vapors and/or physical hazards, only authorized persons will be allowed on the job site. Work zones will be defined by HFA staff who will also be responsible for maintaining security within these zones. Only the minimum number of personnel necessary for the UST investigation will be present in the work zone. 5. DECONTAMINATION AND DISPOSAL HFA's standard operating procedures establish practices that minimize contact with potentially contaminated materials. Decontamination procedures are utilized if there is suspected or known contamination of equipment, supplies, instruments, or any personnel surfaces. Soap and water will used to remove contaminants from personnel surfaces as well as equipment and instruments. Contaminated washwater will be disposed of in accordance with procedures outlined in the Bakersfield Fire Department Hazardous Materials Division UST Local Oversight Program guidance document. 6. WORKER TRAINING All HFA employees working on the site will have completed, at a minimum, the required 40-hour OSHA Training for Hazardous Waste Site Activities (29 CFR 1910, 120), including training in the use of personal protective equipment. Individualized respirator fit testing is required for all HFA employees working at the site. 7. EMERGENCY PROCEDURES HFA employees are trained in emergency first aid, and emergency first aid provisions will be brought to the site. In the event of overt personnel exposure (i.e., skin contact, inhalation, or ingestion), the victim will be transported to and treated at the closest hospital (see Hospital Map). SAN FRANCISCO KERN MEDICAL CENTER 1830 FLOWER STREET BAKERSFIELD, CALIFORNIA (805) 326-2000 /8 '" CALIFORNIA SHEET METAL ~ z ~.~.~ ...... /~ o~.z,_>,,, LOS ANGELES MR. JOHN M. AND MRS. DEANNA J. McCAULEY CALIFORNIA SHEET METAL 601 EUREKA STREET BAKERSFIELD, CALIFORNIA HOSPITAL MAP HOLGUIN, FAHAN & ASSOCIATES, INC. NO. 467 MATERIAL SAFEIY DATA SHEET GENIUId PUBLISHING CORPORATION GASOLINE, LEAD-FREE 1145 CATALYN STREET SCHENECTADY. NY 12~),~1836 U~A ~te October 198l SECTION I. ~TERIAL IDENTIFICATION D~CRI~ION: A vo~c/le ble~ of hydrocarbons for ~ut~ottve fuel O~ER DESI~TI~S: Pe~rol0 ~ !~ ~6 619, ~ ~39 ~FA~: Avai~ble fr~ a~eral ~pliers. SECTION l l, INGREDIENTS AND ~ZARDS z ~4~ZA~O OA?~ CasalS. 1~ 8-hr ~A 3~0 p~ or A hTdtocarb~ blend iht ~ Incl., natal and bt~ch~ 900 q/e~* chin al~es, cycloniC, s, ~eso arctics ~d other add/t/vas.e* '(~ad m 0.013 g/L, phospho~ m O.0013 8~, sulfur m 0.10 viZ. ~y con:iin Eye: ~00 p~/1H be~e, <SZ; see ~ D3606). ~erate *ACClH 1981 ~V (Intended ~Mes Liar). See also ~. lad. HyS. ~ 39 ll~ll7 (1978) **~e c~pos~t~on of fuel ts varied ~th altitude and T~o 900 seasonal requtr~ts for a l~ltty. ~e blend ~st T~:~S Met ~ti~ock requtr~u~. ~ttknock Index ~ 85, AS~ 0&39.) SECTION ili. PHYSICAL DATA D~c~l~at~n ac I am, Initial, deg C ~39 Specific gravity, ~/60 F - 0.72-0.76 50~ d~sttlled - 77-121 ~lt~ point, deg. C ~d point ~ ~ ~ ~2&O Evapora~ion race N/A Vapor d~stty (Air-l) 3..~a.O Solubility ~n viter Insoluble Appearance ~d Odor: A clear, mbile liquid vtth a characteristic odor ~tch can recognized at about 10 p~ in ~it. (G~oltne ~y be colored vith dye.) SECTION IV. FIRE AND EXPLOSION DATA ~o~ee '~lash Point and ~eth~. I Au[oi~ttton Tee~. ! Fla~btltty Lieits In Air -~5 FI 53~853 F' I Z by vol~e 1.~ 7.6 ~t~Rutshtu8 Hedia: DW chattel, cathy' divide, alcohol faa. Uae of ~atet ~y be ineffective to exttn~tsh fire~ but use ~ater spray for c~ltn8 ftte-e~osed ~d tanks to prevent pte~aute ~pture. It ts a danger.s fire and e~lost~ hazard ~en exposed to heat a~ alma. Vapors can fl~ along surfaces, reach dJnt~t ~ni- tt~ sources ~d fXash back. ~ tenet vtoXentXy ~th oxtdtz~n8 as,nra. F~re~tghtera s~d war ae~f~tatned breathing apparatus and fuXX protective clothtn SECTION V, REACTIVI~DATA :This ts a stable ~terta~ tn cXosed c~ta~ners At r~ t~petatuFe u~er no~ storage and hand~Jng c~d~tt~t. It d~s not ~derRo hazardous pol~rtzott~. ~s ts an OS~ C~ass ~ fX~-ble ltqut~. A mixture of [assets, va~rs and air can be expXoslve. Xt tn tnc~attb~e vtth oxtdtztnR The~Z-oxldat~ve deRradatton can yield carb~ m~oxtde ~d paftta~Xy ~tdtt~ hydrocarbons. GENIUM PUBLISHING No. &67 SECTION Vi, HEALTH HAZARD [NFORHATION TLV 300 ppm (See Sect. II) Inhalation causes Intense burning of the mucous membranes, throat and respiratory tract; overexposure to vapors can lead to bronchopneumonia. Inhalation of high cone., can. csus~ fatal pulmonary adema. Repeated or prolonged skin exposure causes oerm~tltx$, tan cause blistering of skin due to its defatting properties. Exposure to eyes can cause hyperemia of the conJunctiva. Ingestion or excessive vapors can cause inebriation, drmesiness, blurred vision, vertigo confusion, vomiting and cyanosls (2000 ppm produces mild anesthesia la 30 mis, higher cone. are ~ntoxicat~n~-in less time.) Aspiration after _invocation causes bronchit=ia, pneumonia, or edema which can be fatal. FIRST AID: Eye Contact: Flush thoroughly with p_m~in_e water for 1~ m~n. Including under eyelids. Skin Contact: ~emove contaminated clothing. Muh affected area mith ~oap and water. Inhalation: R~ve to fresh air. Restore breathin~ ~nd adn~n~cer oxygen if needed. Ingestion: Do not induce vo~ti~. ~piratlon hazard. Contact physician. Seek prompt m~dical usistance for further treat~n~nt, observation and support. SECTION VII. SPILL, LEAK, AND DISPOSAL PROCEDURES Hocify safety personnel of leaks or spills. Remove sources of 'heat or £gnition. Pro- vide adequate ventilation. Clean-up personnel require protection ssatnst liquid con- tact and vapor inhalation. If a leak or spill has not ignited, use water apray to disperse vapors and to protect men attempting to stop the leakage. C~ntttn spill. Do nsc allow to enter sewer or surface warar. Add abaorbent solid to small spills or residues and pick up [or disposal. DISPOSAL: Burn scrap material in an approved Incinerator. Burn contanctnated l~qutd by spraying into an incinerator. Follo~ Federal, State, and Local regulations. SECTION Vlll, SPECIAL PROTECTION INFORMATION Use general and local exhaust ventilation (explosion-proof) to keep vapors belov the TLV requirements in the vorkplace, l~sptrators should be available for nonroutine Or emergency use above the TLV. Avoid eye contac~ by use of chemical safety $oggles ·nd/or full faceshield vhere aplomb= tng is possible, i~ear protective clothin$ appropriate for the york situation co minimize skin contact such as rubber ~loves and boors. Clothing to be changed daily and laundered. Eyewash fountains, shovers and washing facilities should be readily accessible Provide suitable training to those handlln$ and vorkin$ vi. th this ~aterial. SECTION IX. SPECIAL PRECAUTIONS AND COMMENTS _ Store In closed containers Ina cool, dry, well-ventilated area ~sy from sources of heat, ignition and strong oxidizing agents.. Protect containers from physical dmso. Avoid direct sunlight. Storage must meet requirements of OSHA Class lA liquid. Outdoor or detached storase preferred. No smokinc in are-- of use. Prevent static electric spark~ and use explosion-proof electrical services. (Hust meet code.) Avoid skin muJ eye contact. Avoid t~mlation of vapors. ~ear clean york clothing dall~ Indoor use of this material requires exhaust ventilation to remove vapors. ICC Flammable Liquid, Red Label. I~REI.: Fla~n~ble Llouid DOT l.D. No. UN 1203. DOT Classification: FLAHHABLE LIOUID ~ DATA SOURCE(S) CODE:. 2.~-9.31-37 ~IS ' APPROVALS: CRO /O,l'~' ~V~''''''''''~'''~ industrial Hygiene ). /and Safety ~.g~d :,' ~'l.t~ Hi~ICAL REVIEW: '~ 'November 1981 GENIUM PUI~LISHING GASOLINE cas: 8006-6 Bulk Handling TLV-TWA, 300 ppm (= 900 mg/m') TLV-STE~ 50O ppm (= 1500 C. asoline is a clear, tlammable, volable liquid with · characteristic odor. It is · complex mixture of paraftinic, olefinic, and aromatic hydrocarbons rangin8 fn~'n Cj Io C,. compounds. These number as many as 250 separate hydrocadaons in ~ark~us commercial gaso. lines.'" Physkx:hemical pmpen~ include: SpeciF~ Brevity:. 0.72 to 0.76 ar 60°F Boiling poin£'~' $9°C; 60oc (I0% distilled); I IO°C ($0%); 170°C (90%); 204°C Flash point: - $OOF ( IOOCj Explcr.~e lim~: 1.3% and 6.0% by volume in air /n~/ub]e in water, it is freely soluble in ~, chloroform, benzene, and absolute alco/~. Gasoline is a fuel for spark-ignited, mciprocatin& internal com- bustion engines. A typical modem gasoline composition would be 80% paraffins, 14% aromatics, and 6% olefins. The mean benzene ¢ca~ent was found to be approximately 1%. Because it is the most significam .mentioning in establishin8 a TLV?' Other compounds to be 8ive~ particular altemion, it' presenL am n-hexane, n-heptane, other aro- matics, and cerlain olefins.'s.'~ A chromatogral~ic vapor identifica- tion method has been developed for 142 individual components gasoline in one air sample o~ vapors.'" Acute toxicity is simila~''-s-*' for all gasolines. They act 8ene~lly as an anesthetic and are mucaus membrane irritants. The hazard is vetop. Inhalation is the most important route o(oc~l entry. Acute sympe)ms'n of intoxication, headaches, btuned vision, dizzi- ness, and nausea am most con~m~ symlxoms of excessive vapors. Reported responses to gasoline vapocs am: 160-270 ppm causes eye and throat irritation in several hour; 500-g00 ~ causes eye, nose mild anesthesia in 30 minutes.''n Higher concentraUo~ am intoxo (caring in 4-10 minums.''~ The threshold fo~ immediale mild toxic e~t'ect is 900-1000 i:q:m~m There are re~x:xls cd toxic neuritis a~er exposu~s to 8asolille. The role of n-hexane in these cases when pcxentiated by hydrocarbon components is mx dear. Howev~, the Iow amoum n-hexane in typical gasoline~ rules agains~ this being · ixxential problem where the TLV of 300 ppm is ob,,en~l. McDermo, and Killiany~ reposed fha( the vapor of 8asotine durin8 tan~ truck Ioadin8 consJsted of o~,~ 40% butane, on · volume bas~s, and 30% pefl~ane. ~ ~ abou~ 7~., bu~ n-hexane o~ly 1.5%. while isome~ of heptane and ocT3ne amounted d'~an 2%. Four olefins (isobutylene and Ifiree isome~ of pefltefle) ca~- (ribuled be~v~efl 5% ~,nd G% of Ifie (mai, while benzene (0.7%), toluene and xylefle loged~er co~s~iluled 3%. About 8% 04' Ihe vapor consisted o( o~her high boiling ingredienss (C, ~o C,, compoundsL It is noleworthy ~hal Ihe conce~iralion of areal(cs in ~e va~r was m~ I~s ~n in ~e liquid, ~ich, on ~ average, con.ins 14% a~ h~s. Runic, ~, ~ 24% Io 27% ~al a~ in van~s 8r~ of ~ bra~ ol ~line." ~e ~n ~t~l ~ ~ vast, ~ ~ ~ ~. was a~u~ ~ ~ as ~I ~ a ~1 ~ine,'4' ~ ~ dighlly hi~r.':' ~ ~ ~ ~ s~y,'' a TLr &~ ~ was ~o~ ~ ~ ~i~ vast. ~is ~s ma~, ~ con~ fi~. f~ ~ o~i~s i~. ~ ~ ~l~g of ~li~. In ~ ~ d ~ills ~to a no~ ~, ~ ~ u~ oi ~line ~ a ~ or ~in~ (~ ~~, ~ ~ ~ ~e liquid is v~z~, a ~! I~ limil mi~l ~ in ~er. ~ m~ ~~ ~ ~e ~ ~n ~i~ is I% ~ ~s ~ 2% ~ ~ ~.'" O~ la~ ~ner ~s a ~ lim~ ~ 4%. ~ ~i~ ~ly ~y c~in ~ lo 5% ~.'~ ~l~is ~ 86 ~ ~ ~i~ f~ ~- on filling ~/i~s ~1~ ~! 5% ~i~ ~ ~an 2.5% ~ z~, ~& ~e hi8~ ~z~ ~ ~ng 4.8%."' ~ d l~ ~diti~ Io ~ ~li~, ~ch as ~yl~ di~l~ and ~lly ~ di~, am quite toxic, ~t am ~t in ~ ~11 a~ ~t ~ make a n~ligible c~ ~ Io ~ toxiciw u~ ~ ~i~.~' T~r~hyl a~ ~yl ~ am ~ I~ in ~afiliw ~t ~ al~ o~inafily ~ li~e ~al~ ~ in ~ ~ling d ~ ~ine. In ~fi~ wi~ ~nic ~B, ~li~ ~ a ~ w~e in8 ~. ~ ~ ~ ~V is limi~ lo ~lk ~lin8 p~, i~i~ fillin8 ~ti~ ~d~, ~ ~ d~ ~ ~ I~ mxi~ ~ I~ hi8~ ~iling ing~i~u ~i~ mighl ~' in ~ ~afi~s in.lying ~li~. ~ ~ ~ w~ va~ali~ ~ ~l~lar ~ ~ its ~ ~, ~ c~ d ~ m ~m~ is ~imam. ~ i~ ~11~ ~ a ~n mol~r ~t ~ ~. As~min8 ~ uni~lifi~ 8% m c~si~ of ~ hydra.s, the average ~1~ ~i~l ~ ~ 72.5. ~fom, al 25°C a~ 76 ton, 3~ ~ ~ld ~ m ~ ~ m~mL A li~l~ a~ TLV ~ 3~ ppm is ~d~, for ~lk ~lin8 ~ ~li~ ~ ~ Runi~'s'~ olculalions on ~~ ~!~ ~ ~i~ va~. A STEL of ~ ~ is al~ 1. I'~ C~. aed IL~ leeem Am. Ind. HYg. Assoc. I. ~19:118 U978). ~. The Meek/nde~ I0~ ecL. p. 624. Me~k & Co., Inc.. R~d~waY. New Je~'Y (1983). ~. ~ ILL el al: Am. Ind. HI~ AJ~)c. I. 24~79 (19631. 4. M~[~ ILl- and ~E. IGII~, k-: Ib~f. 39:!10 (1978L $. Ge~a~le~ ~LW: Industr~l Hygk. ne and To~co~o~,. 2nd ed.. F. Path'. Ed. In~.~'~ence. New Yo~ (1%3L ~ ~ ami Hal~la~l: No~~:~us C, ases. Re~. ed. Reinhold Pubhshm8 Co~. (1943). 7. ~ H J-: Ib~d. J6:338 1197SL ~. ir,.ammi, V..Pe~l:d~e~al.,,~eumisaf~e~,~ddic~O~ope~.8.~ ksed I 1:216 (19~6L 9. T.,li~,~Chi, Y. 4~ ii: Pc~,'tl~'ufoO,~thY Cau'~e.d by Pe~,roh,'~Jm Br~z~'~ ~. ~ ~. 34 185 (1975L HOLC,- 2IN, FAI-IAN & ES, INC. ENVIRONMENTAL MANAGEMENT CONSULTANTS 143 South Figueroa Street · Ventura, California 93001 (805) 652-0219 · FAX (805) 652-0793 853 West 17th Street · Costa Mesa, California 92627 (714) 642-2660 · FAX (714J 642-2544 3157 Pegasus Drive · Bakersfield, California 93308 (805) 391-0517 · FAX (805) 391-0826 April 18, 1996 Mr. John M. and Mrs. Deanna J. McCauley California Sheet Metal In Care of Mr. Patrick C. Carrick Griffin · Carrick Attorneys at Law Post Office Box 2348 Bakersfield, California 93303-2348 Subject: RECEIVED FIRST QUARTER 1996 PROGRESS REPORT FOR cALIFoRNIA SHEET METAL 601 EUREKA STREET, BAKERSFIELD, CALIFORNIA Dear Mr. and Mrs. McCauley: Holguin, Fahan & Associates, Inc., (HFA) is pleased to present the following first quarter 1996 progress report of the ongoing remedial action at the California Sheet Metal property located at 601 Eureka Street in the city of Bakersfield, Kern County, California (see Figure 1 - Site Location Map). Remedial activities at the site have included the operation of a VES under San Joaquin Valley Unified Air Pollution Control District - Southern Region (SJVUAPCD-SR) PTO #S-2660-1-0. The remedial activities are being required by the City of Bakersfield Fire Department Hazardous Materials Division (BFDHMD) UST Local Oversight Program (LOP) as a result of the discovery of gasoline-containing soils surrounding the former gasoline UST at the site. SITE BACKGROUND The site previously contained a single 550-gallon gasoline UST. California Sheet Metal contracted Calpi, Inc., to remove the UST on December 17, 1991. Gasoline hydrocarbon concentrations were detected in the soil samples (S-1 and S-2) collected from beneath the UST. On March 19, 1992, six soil borings (B-1 through B-6) were drilled at the site by Wilson & Associates, Inc., and on March 8, 1993, three additional soil borings (B-7 through B-9) were drilled at the site by Piwarea Engineering, Inc. The soil investigations indicated TPH as gasoline concentrations to depths less than 75 fbg and less than 45 feet laterally from the former UST location (see Attachment 1 for a summary of previous work). On January 17 and 18, 1994, HFA drilled and installed six vapor extraction wells (VW-1 through VW-6). HFA connected the wells through 3-inch-diameter piping to a central manifold (see Figure 2 - Plot Plan Showing VES). HFA has subsequently obtained an ATC permit from the ENVIRONMENTAL PLANNERS · SCIENTISTS · GEOLOGISTS AND ENGINEERS Contaminated Site Assessments * Real Estate Audits * Site Remediation * Hazardous Waste Management HOLGUIN FAHAN & ASSOCIATES, INC. ENVIRONMENTAL MANAGEMENT CONSULTANTS Mr. John1~and Mrs. Deanna J. McCauley California Sheet Metal April 18, 1996 - Page 2 SJVUAPCD-SR for the construction and installation of a King, Buck/Hasstech, Inc., direct-fired thermal oxidation unit for the in-situ vapor extraction of volatile hydrocarbons in the soils at the site. Subsequently, the system was delivered and installed at the site (see Figure 2). YES REPORT FOR THE FIRST QUARTER OF 1996 On November 28, 1994, HFA acquired ATC Permit #S-2660-1-0 for a VES utilizing a King, Buck/Hasstech, Inc., 150 scfm, direct-fired thermal oxidizer (see Figure 2 and Figure 3 ~ VES Schematic Diagram). On July 17, 1995, HFA conducted a source test of the treatment unit in compliance with the requirements of the ATC permit. Based on the vapor sampling and analytical results, the efficiency of the direct-fired, thermal oxidation system is greater than 99.8 percent, the maximum VOC emi,ssion is 1.4 ppmv, and the benzene emission is less than 0.03 ppmv. Therefore, the source test demonstrated compliance with the conditions of the ATC permit (see Table 1 - Summary of Source Compliance Monitoring Analytical Results). HFA subsequently requested that the ATC permit be upgraded to a PTO. During the first 4 weeks of operation, high VOC concentrations and oxygen deficiency in the soil caused the unit to frequently shut down. During this time, vapor wells VW-1 and VW-2 were used as extraction wells while vapor wells VW-3 through VW-6 were used as air inlet wells, and the dilution air valve was completely open. As soil conditions improved, dilution air was slowly decreased until no dilution air was required, and well VW-3 was brought on line as an extraction well. HFA has operated the unit 24 hours per day since August 14, 1995, with only short periods of inactivity for maintenance, draining of the knockout pot, and a few occurrences when the system has shut down. On March 6, 1996, HFA collected inlet and outlet vapor samples, and submitted them to HFA Environmental Laboratories, Inc., for analysis. The samples were analyzed for TPH as gasoline and BTEX using EPA Methods 8015 (M) and 8020, respectively. The inlet vapor concentration was 1,900 ppmv for the March 6, 1996, sampling event (see Table 1 and Attachment 2 for the laboratory report). Since start-up, inlet vapor concentrations have ranged from 800 ppmv to 3,800 ppmv.as of March 30, 1996 (see Figure 4- Influent and Effluent TPH Concentrations and Table 2 - Summary of VES Monitoring Data). The inlet soil vapor flow rate has been maintained near the maximum stated in the ATC permit and ranges from 66 to 120 scfm. HFA estimates the mass of gasoline hydrocarbons extracted from the subsurface since start-up to be approximately 12,069 pounds, which is equivalent to approximately 1,886 gallons of gasoline (see Figure 5 - Cumulative Extraction Curve and Table 2). HOLGUIN FAHAN & ASSOCIATES, INC. ENVIRONMENTAL MANAGEMENT CONSULTANTS Mr. John ~nd Mrs. Deanna J. McCauley California Sheet Metal April 18, 1996 - Page 3 In accordance with the Lawrence Livermore National Laboratory's Recommendations to improve the Cleanup Process for California's Leaking Underground Fuel Tanks report dated October 16, 1995, and the State Water Resources Control Board's (SWRCB's) Underground Storage Tank Cleanup Fund Technical Review Guidance Document No. 4 dated December 27, 1995, Mr. John M. and Mrs. Deanna J. McCauley request that the BFDHMD UST LOP provide written guidance pertaining to the additional remediation activities required at the site. ACTIVITIES PLANNED FOR THE SECOND QUARTER OF 1996 The following activity will be completed during the second quarter of 1996: continue full-time operation of the VES unit, pending BFDHMD UST LOP review of SWRCB cleanup guidelines. Hoiguin, Fahan & Associates, Inc., trusts that you will find this first quarter 1996 progress report to your satisfaction. If you have any questions or require additional Information, please contact Mr. Mark Magargee at (805) 391-0517 or at e-mail address Mark_Magargee@hfa.com. Respectfully submitted, Eric R. Casterline ,~' Environmental Technician Holguin, Fahan & Associates, Inc. er¢:rri Enclosures: Figure 1 - Figure 2 - Figure 3 - Figure 4 - Figure 5 - Table 1 - Table 2 - Attachment 1 Attachment 2 Site Location Map Plot Plan Showing VES VES Schematic Diagram Influent and Effluent TPH Concentrations Cumulative Extraction Curve ~, Summary of Source Compliance Monitoring Analytical Results Summary of VES Monitoring Data - Summary of Previous Work Laboratory Report M~rk R. Magargee, CHG, RG-~ Senior Hydrogeologist Holguin, Fahan & Associates, CC: Mr. Howard H. Wines, Ill, BFDHMD UST LOP Mr. Patrick C. Carrick, Griffin * Carrick HOLGUIN~ FAHAN & ASgDCIATES, INC. ENVIRONMENTAL MANAGEMENT CONSULTANTS Mr. John l~nd Mrs. Deanna J. McCauley California Sheet Metal April 18, 1996 - Page 4 ,i SITE LOCATIONi 388 q' '\ 11 1 [!1 i'-;'~ ~, I /q~/i LEGEND 4 MR. JOHN M. AND MRS. DEANNA J. McCAULEY CALIFORNIA SHEET METAL 601 EUREKA STREET BAKERSFIELD, CALIFORNIA FIGURE 1 - SITE LOCATION MAP HOLC~UIN, FAHAN & ASSOCIATES, INC. HOLGUIN FAHAN & ASSOCIATF , INC. ENVIRONMENTAL MANAGEMENT CONSULTANTS Mr. John ~and Mrs. Deanna J. McCauley California Sheet Metal April 18, 1996 - Page 5 EUREKA STREET SIDEWALK T ~' G~IrE~ CHAIN-LINK FENCE ~ -- ~ CALIFORNIA Z SHEET METAL C~ BUILDING .. ~ CONCRETE SLAB ' LIMIT OF ,. ' GASOLINE-CONTAINING CANOPY SOILS ............... _~ ........... ~.~__ I~._~ ,' TANK EXCAVATION VES ~- MANIFOLD VW-6 / ~ CHAIN-LINK FENCE SCALE IN FEET ALLEY 0 10 20 LEGEND MR. JOHN M. AND MRS. DEANNA J. McCAULEY CALIFORNIA SHEET METAL ~ VAPOR EXTRACTION WELL 601 EUREKA STREET "~- VES PIPING BAKERSFIELD, CALIFORNIA ~- FIGURE 2 - PLOT PLAN SHOWING VES HOLGUIN, FAHAN & ASSOCIATES, [NC. REVISION DATE: FEBRUARY 8, 1996: RRI HOLGUIN~ FAHAN & ASSOCIATES, INC. ENVIRONMENTAL MANAGEMENT CONSULTANTS Mr. John Mrs. Deanna J. McCauley California Sheet Metal April 18, 1996 - Page 6 <150 VW-1 VW-2 VW-3 VW-4 VW-5 VW-6 -X ATMOSPHERE · ( ] KNOCK-OUT DRUM INFLUENT MONITORING POINT BLOWER WITH <150 scfm SILENCER SUPPLEMENTAL FUEL EFFLUENT MONITORING POINT THERMAL/ CATALYTIC OXIDIZER NOT TO SCALE LEGEND PRESSURE OR VACUUM GAUGE VALVE FLOW GAUGE SAMPLE TAP REVISION DATE: FEBRUARY 8, 1996: RRI MR. JOHN M. AND MRS. DEANNA J. McCAULEY CALIFORNIA SHEET METAL 601 EUREKA STREET BAKERSFIELD, CALIFORNIA FIGURE 3 - VES SCHEMATIC DIAGRAM HOLGUIN, FAHAN & ASSOCIATES, INC. HOLGUIN,~ FAHAN & ASSOC~T~, INC. ENVIRONMENTAL MANAGEMENT CONSULTANTS Mr. John Mrs. Deanna J. McCauley California Sheet Metal April 18, 1996 - Page 7 FIGURE 4 - INFLUENT AND EFFLUENT TPH CONCENTRATIONS E 10,000 1,000 100 10 0.1 IPH In ..... -......... IPH Out ,0 2 4 6 8 10 12 14 16 18 20 22 24 26 Cumulative Operating Weeks HOLGUINi FAHAN & ASSOC~T~, INC. ENVIRONMENTAL MANAGEMENT CONSULTANTS Mr. John Mrs.. Deanna J. McCauley California Sheet Metal April 18, 1996 - Page 8 FIGURE 5 - CUMULATIVE EXTRACTION CURVE 0 ?_ 13,000 12,000 11,000 10,000 9,000 8,000 7,000 6,000 5,000 4,000 3,000 2,000 1,000 0 2 4 6 8 10 12 14 16 18 20 22 24 26 Cumulative Operating Weeks HOLGUINI FAHAN & ASSOCIATF~, INC. ENVIRONMENTAL MANAGEMENT CONSULTANTS Mr. John Mrs. Deanna J. McCauley California Sheet Metal April 18, 1996 - Page 9 TABLE 1. SUMMARY OF SOURCE COMPLIANCE MONITORING ANALYTICAL RESULTS CALIFORNIA SHEET METAL, BAKERSFIELD, CALIFORNIA DATE TPH AS ETHYL- TOTAL SAMPLE SOURCE SAMPLED SAMPLEI.D. GASOLINE BENZENE TOLUENE: BENZENE XYLENES REF (ppmv) (ppmv) (ppmv) (ppmv) (ppmv) EPA ANALYTICAL METHOD 8015 {MI 8020 N/A METHOD DETECTION LIMIT VARIES-SEE LABORATORY REPORTS N/A INFLUENT 7-17-95 95-8623-2 702 33.94 83.19 5.501 42.92 A EFFLUENT 7-17-95 95-8623-1 1.4 ND 0.08 ND 0.14 A INFLUENT 3-6-96 96-0695 1,900 92 210 32 190 : B EFFLUENT 3-6-96 96-0696 ND 0.56 0.29 0.07 0.15 B TNMHC = Total non-methane h~,drocarbons. REF = Report reference. N/A = Not applicable. ND = Not detected. A = Holguin, Fahan & Associates Inc.'s (HFA's) report dated August 4, 1995. B = HFA's current report. HOLGUIN' FAHAN &.ASSOCIATES, INC. ENVIRONMENTAL MANAGEMENT CONSULTANTS Mr. John Mrs. Deanna J. McCauley California Sheet Metal April 18, 1996- Page 10 HOLGUIN~I FAHAN & ASS(X21ATES, INC. ENVIRONMENTAL MANAGEMENT CONSULTANTS ATTACHMENT 1. SUMMARY OF PREVIOUS WORK EUREKA STREET SIDEWALK · ----G,47.E.... CHAIN-LINK FENCE CALIFORNIA SHEET METAL BUILDING CONCRETE SLAB ~ CANOPY . ~, , B-9 B-8 B-6 m B-5 ~: z B-1 IJ.I --I ' ~ LIMIT OF \.. ,' TANK EXCAVATION B-4 SCALE IN FEET ~ CHAIN-LINK FENCE 0 10 20 B-7 ALLEY LEGEND MR. JOHN M. AND MRS. DEANNA J. McCAULEY SOIL BORING CALIFORNIA SHEET METAL 601 EUREKA STREET BAKERSFIELD, CALIFORNIA FIGURE 1 - PLOT PLAN HOLGUIN, I~AHAN & ASSOCIATE, S, INC. REVISION DATE: FEBRUARY 8, 1996: RRI TABLE 1. SUMMARY OF SOIL SAMPLE ANALYTICAL RESULTS FOR TANK REMOVAL CALIFORNIA SHEET METAL, BAKERSFIELD, CALIFORNIA SAMPLE DATE SAMPLE TPH AS ETHYL- TOTAL SOURCE SAMPLED DEPTH I.D. GASOLINE BENZENE TOLUENE BENZENE XYLENES REF (fbg) (mg/kg) (mg/kg) (mg/kg) (mg/kg) (mg/kg) EPA ANALYTICAL METHOD 8015 (a) 8020 N/A MINIMUM REPORTING LEVEL 1.0 0.005 0.005 0.0051 0.005 N/A S-1 12-17-91 I 8 S-1-8 810 44 170 19i 153 A S-2 12-17-91I 12 S-2-12 10,000 98 275 23 290 A REF = Report reference. N/A = Not applicable. A = Calpi, Inc.'s, soil sampling event dated December 17, 1991. TABLE 2. SUMMARY OF SOIL SAMPLE ANALYTICAL RESULTS CALIFORNIA SHEET METAL, BAKERSFIELD, CALIFORNIA SAMPLE DATE SAMPLE TPH AS ETHYL- TOTAL TOTAL ORGANIC SOURCE SAMPLED DEPTH I.D. GASOLINE BENZENE TOLUENE BENZENE XYLENES LEAD LEAD REF (fbg) (mg/kg) (mg/kg) (mg/kg) (mg/kg) (mg/kg) (mg/kg) (mg/kg) EPA ANALYTICAL METHOD 8015 (M) 8020 7420 N/A METHOD REPORTING LIMIT VARIES-SEE LABORATORY REPORTS N/A B-1 3-19-92 5 B-1-5 6,000 ND (>20) 210 50 1,960 39 2.7 A 3-19-92 15 B-1-15 6,000 ND (>100) 390 170 1,290 .... A 3-19-92 30 B-1-30 3,100 ND (>2.0) 86 71 438 4.5 -- A 3-19-92 45 B-1-45 3,000 5.0 160 75 390 .... A 3-19-92 60 B-1-60 13,000 110 1,300 300 2,560 .... A 3-19-92 75 B-1-75 ND ND ND ND ND ND -- A 3-19-92 80 B-1-80 ND ND ND ND ND .... A 3-19-92 85 B-1-85 ND ND 0.047 ND 0.014 4.5 -- A 3-19-92 90 B-1-90 ND 0.084 0.16 0.049 0.088 - -- A B-2 3-19-92 15 B-2-15 12,000 1,000 1,500 340 2,480 ..... A 3-19-92 30 B-2-30 400 0.2 1.2 4.7 49 3.9 -- A B-3 3-19-92 30 B-3-30 30,000 400 3,400 800 4,300 .... A B-4 3-19-92 30 B-4-30 ND ND ND ND ND .... A 3-19-92 - 40 B-4-40 ND ND ND ND ND .... A B-5 3-19-92 15 B-5-15 ND 0.011 0.017 ND ND -- -- A 3-19-92 40 B-5-40 7,000 42 540 160 810 .... A B-6 3-19-92 20 B-6-20 ND ND ND ND ND 3.6 -- A 3-19-92 30 B-6-30 ND ND ND ND ND .... A 3-19-92 40 B-6-40 ND ND 0.008 ND 0.01 8.5 -- A B-7 3-8-93 20 B-7-20 ND ND ND ND ND .... B 3-8-93 30 B-7-30 ND ND ND ND ND .... B 3-8-93 50 B-7-50 ND 0.064 0.029 ND 0.015 -- - B B-8 3-8-93 20 B-8-20 ND ND ND ND ND .... B 3-8-93 35 B-8-35 ND 0.079 0.11 ND 0.09 .... B B-9 3-8-93 30 B-9-30 ND ND ND ND ND .... B 3-8-93 40 B-9-40 ND ND ND ND ND .... B 3-8-93 50 B-9-50 ND 0.11 0.027 ND 0.045 .... B REF = Re )ort reference. N/A = Not applicable. ND = Not detected. -- = Not anal 'zed. A = Wilson & Associates, Inc.'s, soil sampling event dated March 19, 1992. B = Piwarea Engineering, Inc.'s, soil sampling event dated March 8, 1993: HOLGUIN FAHAN & ASSOCIATES, INC. ENVIRONMENTAL MANAGEMENT CONSULTANTS ATTACHMENT 2. LABORATORY REPORT ENVIRONMENTAL LABORATORIES March 11, 1996 143 South Rgueroa Street -Ventura, California 93001 · (805) 652-0219 · FAX: (805) 652-0793 REPORT OF ANALYTICAL RESULTS CL ! ENT ~ McCauley, John & Deanna John & Deanna McCauley Post Office Box 2348 Bakersfield CA 93303-2348 PROJECT: california Sheet Metal Paqe 1 Analyzed By: V. de Vera Sampled By: E. Casterline Units: MettLe: Air Analyses Method: BTeX: EPA 8020 TPH: 8015-M CONC~%TZON OF TOTAL I~E~ROLE~q HYDROCARBONS (TP~) W~TH BTEX DISTiNCTiON CONSTITUENT TPH- TPB- Ethyl Total Lab Sample Dates Sampled, Gas Diesel Benzene Toluene Benzene Xylenes MTBE Percent Surrogate No. No. Received and Tested MRL ~RL MRL ~ MRL MRL HRL Recovery 960695 Influent 3/6/96 3/7/96 3/8/96 1900 92 210 32 190 93% 10 .01 .01 ,01 .04 960696 Effluent 3/6/96 3/7/96 3/7/96 ND <MP, L .56 .29 .07 .15 10 .01 .01 .01 .04 91% MILL = Method Reporting Limit ND = Not Detected at or above MRL Lab Certification: CAE[AP ~1878; 1/31/96 Laboratory Manager: FAHAN & ASSOCIATES, INC. ENVIRONMENTAL LABORATORIES 2550 Eastman Ave., Unit 1, Ventura, CA 93003¥(805) 650-7750¥FAX (805)650-6810 METHOD BLANK REPORT REPORT OF ANALYTICAL RESULTS Repod Dale ' 8-Mar-96 Date Analyzed : QC Balch ID · MBA3/7/96 Analyzed By · Instrument ID: HP 5890 GC-1 Analysis Method: 7-Mar-96 V. de Vera 8015/8020 Lab No. CONCENTRATION OF TOTAL PETROLEUM HYDROCARBONS (tph) WITH BTEX DISTINCTION in mg/Kg isoil), mg/I (water), ppm v/v (air) TPH- Client " Gasoline Benzene Sample No. Matrix M/~L A4£L Ethyl Total · Toluene Benzene Xylenes /v/A:'L A4A~/ MBA3/7/96 · Method Blank Air ND ND ND ND ND 10 0.01 0.01 0.01 0.04 Volatile fuel hydrocarbons are quanfitated against a gasoline standard. Hydrocarbons detected by this method range flora C6 to C15. Analytes reported as ND were not presenl above the slated limit of dejection. MRL = Ivlethod Reporting Limit ND = Not Detected at or above MRL LAB CER'tlFICAI'ION: CAELAP /11878; 1/31/96 2550 Eastman Ave., Unit 1, Ventura, CA 93003¥(805) 650-7750¥FAX (805) 650-6810 METHOD BLANK REPORT REPORT OF ANALYTICAL RESULTS Report Date: 11-Mar-96 Dale Analyzed : QC Batch ID: MBA3/8/96 Analyzed By : Instrument ID: HP 5890 GC-1 Analysis Method: 8--Mar-96 V. de Vera 8015/8020 Lab No. CONCENTRATION OF TOTAL PETROLEUM HYDROCARBONS Ilph) WITH BTEX DISTINCTION in mg/Kg (soil), mg/I Iwater), ppm v/v lair) TPH- Client Gasoline Sample No. Matrix MRL Ethyl Total Benzene Toluene Benzene Xylenes MRL M£L M£L MRL MBA3/8/96 Method Blank Air ND ND ND ND ND I0 0.01 0.01 0.01 0.04 Volatile fuel hydrocarbons are quantitated against a gasoline standard. Hydrocarbons detected by this method range from C6 to C15. Analytes reported as ND were not present above the stated limit of detection. MRL = Ivtefhod Reporting Limit ND: Not Delecled at or above IvlRL LAB CERi'IFICA'flON: CAELAP ://1878; 1/31/96 8 HOLGEsIN, FAHAN & ~: ENVIRONMENTAL 143 South Figueroa Street · Ventura, California 93001 853 West 17th Street · Costa Mesa, California 92627 3157 Pegasus Drive · Bakersfield, California 93308 lES, INC. MANAGEMENT CONSULTANTS (805) 652-0219 · FAX (805) 652-0793 (714) 642-2660 · FAX (714) 642-2544 (805) 391-0517 · FAX (805) 391-0826 February 9, 1996 Mr. John M. and Mrs. Deanna J. McCauley California Sheet Metal In Care of Mr. Patrick C. Carrick Griffin · Carrick Attorneys at Law Post Office Box 2348 Bakersfield, California 93303-2348 RECEIVED 1 3 t9% HAZ. MAT. DIV. Subject: FOURTH QUARTER 1995 PROGRESS REPORT FOR CALIFORNIA SHEET METAL 601 EUREKA STREET, BAKERSFIELD, CALIFORNIA Dear Mr, and Mrs, McCauley: Holguin, Fahan & Associates, Inc., (HFA) is pleased to present the following fourth quarter 1995 progress report of the ongoing remedial action at the California Sheet Metal property located at 601 Eureka Street, in the city of Bakersfield, Kern County, California (see Figure 1 - Site Location Map). Remedial activities at the site have included the operation of a VES under San Joaquin Valley Unified Air Pollution Control District - Southern Region (SJVUAPCD-SR) PTa #S-2660-1-0. The remedial activities are being required by the City of Bakersfield Fire Department Hazardous Materials Division (BFDHMD) UST Local Oversight Program (LOP) as a result of the discovery of gasoline-containing soils surrounding the former gasoline UST at the site. SITE BACKGROUND The site previously contained a single 550-gallon gasoline UST. California Sheet Metal contracted Calpi, Inc., to remove the UST on December 17, 1991. Gasoline hydrocarbon concentrations were detected in the soil samples collected from beneath the UST. On March 19, 1992, six soil borings (B-1 through B-6) were drilled at the site by Wilson & Associates, Inc., and on March 8, 1993, three additional soil borings (B-7 through B-9) were drilled at the site by Piwarea Engineering, Inc. The soil investigations indicated TPH as gasoline concentrations to depths less than 75 fbg and less than 45 feet laterally from the former UST location (see Attachment 1 for a summary of previous work). On January 17 and 18, 1994, HFA drilled and installed six vapor extraction wells. HFA connected the wells through 3-inch-diameter piping to a central manifold (see Figure 2 - Plot Plan Showing VES). HFA has subsequently obtained an ATC permit, from the SJVUAPCD-SR for the ENVIRONMENTAL PLANNERS · SCIENTISTS * GEOLOGISTS AND ENGINEERS Contaminated Site Assessments * Real Estate Audits * Site Remediation * Hazardous Waste Management HOLGUIN, · FAHAN & ASSOCIATES, INC. ENVIRONMENTAL MANAGEMENT CONSULTANTS Mr. John Mrs. Deanna J. McCauley California Sheet Metal February 9, 1996 - Page 2 construction and installation of a King, Buck/Hasstech, Inc., direct-fired thermal oxidation unit for the in-situ vapor extraction of volatile hydrocarbons in the soils at the site. Subsequently, the system was delivered and installed at the site (see Figure 2). YES REPORT FOR THE FOURTH QUARTER OF 1995 On November 28, 1994, HFA acquired ATC Permit #S-2660-1-0 for a VES utilizing a King, Buck/Hasstech, Inc., 150 scfm, direct-fired thermal oxidizer (see Figure 2 .and Figure 3- VES Schematic Diagram). On July 17, 1995, HFA conducted a source test of the treatment unit in compliance with the requirements of the ATC permit. Based on the vapor sampling and analytical results, the efficiency of the direct-fired, thermal oxidation system is greater than 99.8 percent, the maximum VOC emission is 1.4 ppmv, and the benzene emission is less than 0.03 ppmv. Therefore, the source test demonstrated compliance with the conditions of the ATC permit (see Table 1 - Summary of Source Compliance Monitoring Analytical Results). HFA subsequently requested that the ATC permit be upgraded to a PTO. During the first 4 weeks of operation, high VOC concentrations and oxygen deficiency In the soil caused the unit to frequently shut down. During this time, vapor wells VWol and VW-2 were used as extraction wells while vapor wells VW-3 through VW-6 were used as air inlet wells, and the dilution air valve was completely open. As soil conditions improved, dilution air was slowly decreased until no dilution air was required, and well VW-3 was brought on line as an extraction well. HFA has operated the unit 24 hours per day since August 14, 1995, with only short periods of inactivity for maintenance, draining of the knockout pot, and a few occurrences when the system has shut down. Since start-up, inlet vapor concentrations have ranged from 811 ppmv to 3,800 ppmv as of December 20, 1995 (see Figure 4 - Influent and Effluent TPH Concentrations and Table 2 - Summary of VES Monitoring Data). The inlet soil vapor flow rate has been maintained near the maximum stated in the ATC permit and ranges from 66 to 120 scfm. HFA estimates the mass of gasoline hydrocarbons extracted from the subsurface since start-up to be approximately 8,950 pounds, which is equivalent to approximately 1,398 gallons of gasoline (see Figure 5 - Cumulative Extraction Curve and Table 2). HOLGUIN, FAHAN & IATES, INC. ENVIRONMENTAL MANAGEMENT CONSULTANTS Mr. John Mrs. Deanna J. McCauley California Sheet Metal February 9, 1996 - Page 3 ACTIVITIES PLANNED FOR THE FIRST QUARTER OF 1996 The following activity will be completed during the first quarter of 1996: · continue full-time operation of the VES unit. Holguin, Fahan & Associates, Inc., trusts that you will find this fourth quarter 1995 progress report to your satisfaction. If you have any questions or require additional information, please contact Mr. Mark Magargee at (805) 391-0517 or at e-mail address Mark_Magargee@hfa.com. Respectfully submitted, Eric R. Casterline Environmental Technician Holguin, Fahan & Associates, Inc. erc:rri Enclosures: Figure 1 Figure 2 Figure 3 Figure 4 - Figure 5 - Table 1 - Table 2 - Attachment 1 Site Location Map Plot Plan Showing VES Mark R. Magargee, CHG~'G ~" Senior Hydrogeologist VES Schematic Diagram Influent and Effluent TPH Concentrations Cumulative Extraction Curve Holguin, Fahan & Associates, Summary of Source Compliance Monitoring Analytical Results Summary of VES Monitoring Data - Summary of Previous Work CC: Mr. Ralph Huey, BFDHMD UST LOP Mr. Patrick C. Carrick, Griffin · Carrick HOLGUIN, FAHAN & ASSOC T , INC. ENVIRONMENTAL MANAGEMENT CONSULTANTS Mr. John M.~d Mrs. Deanna J. McCauley California Sheet Metal February 9, 1996 - Page 4 TE LOCATION, 5 388 4 LEGEND 0 0.5 1 MILE .~ 2.~ 3.~ 4.~ 5.~ FEET 0 1 0 05 1 KILOMEI ER USGS C~SFORD&AMONF/O CFNTER~ LDAFE 7.5 M NUTE SER ES OUADRANGLFS MR. JOHN M. AND MRS. DEANNA J. McCAULEY CALIFORNIA SHEET METAL 601 EUREKA STREET BAKERSFIELD. CALIFORNIA FIGURE 1 - SITE LOCATION MAP HOLGUIN, FAHAN & ASSOCIATES, INC. HOLGUIN, FAHAN & ASSOCIATES, INC. ENVIRONMENTAL MANAGEMENT CONSULTANTS Mr. John M d Mrs. Deanna J. McCauley California Sheet Metal Februan/9, 1996 - Page 5 EUREKA STREET SIDEWALK '---G~7.E... CHAIN-LINK FENCE ~] -- o3 CALIFORNIA Z SHEET METAL rr BUILDING v CONCRETE SLAB ' LIMIT OF ~',,A CANOPY : GASOLiNE-CONTAINING SOILS I~ , ~__ ,.~__ ,[~3~i,~._.~ LMiTOF ,k~,i~TAN , ..... ' AOv T'ON I VES ~ MANIFOLD ~ CHAIN-LINK FENCE SCALE IN FEET ALLEY 0 10 20 LEGEND MR. JOHN M. AND MRS, DEANNA J. MCCAULEY CALIFORNIA SHEET METAL ~K VAPOR EXTRACTION WELL 601 EUREKA STREET ""- VES PIPING BAKERSFIELD, CALIFORNIA '"' FIGURE 2 - PLOT PLAN SHOWING VES HOLGUIN, FAHAN & ASSOCIATES, INC. REVISION DATE: FEBRUARY 8, 1996: RRI HOLGUIN, FAHAN & ~IATES, INC. ENVIRONMENTAL MANAGEMENT CONSULTANTS Mr. John Mrs. Deanna J. McCauley California Sheet Metal February 9, 1996 - Page 6 <15¢ VW-1 VW-2 VW-3 VW~4 VW-5 VW-6 -X ATMOSPHERE ( ) KNOCK-OUT DRUM INFLUENT MONITORING POINT J THERMAL/ BLOWER WITH <150 scfm ~ OXIDIZER SILENCER '1' SUPPLEMENTAL FUEL EFFLUENT MONITORING POINT NOT TO SCALE LEGEND PRESSURE OR VACUUM GAUGE VALVE FLOW GAUGE SAMPLE TAP REVISION DATE: FEBRUARY 8, 1996: RRI MR. JOHN M. AND MRS. DEANNA J. McCAULEY CALIFORNIA SHEET METAL 601 EUREKA STREET BAKERSFIELD, CALIFORNIA FIGURE 3 - VES SCHEMATIC DIAGRAM HOLGUIN, FAHAN & ASSOCIATES, INC. HOLGUIN, FAHAN & ASSOCIATES, INC. ENVIRONMENTAL MANAGEMENT CONSULTANTS Mr. John Mrs. Deanna J. McCauley California Sheet Metal February 9, 1996 - Page 7 FIGURE 4 - INFLUENT AND EFFLUENT TPH CONCENTRATIONS 0 10,000 1,000 100 10 0,1 TPH In TPH Out 0 2 4 6 8 10 12 14 16 18 Cumulative Operating Weeks HOLGUIN, FAHAN & ASSOCIATES, INC. ENVIRONMENTAL MANAGEMENT CONSULTANTS Mr. John Mrs. Deanna J. McCauley California Sheet Metal Februa~/9, 1996 - Page 8 FIGURE 5 - CUMULATIVE EXTRACTION CURVE 10,000 9,000 8,000 7,000 6,000 5,000 4,000 3,000 2,000 1,000 0 2 4 6 8 10 12 14 16 18 Cumulative Operating Weeks HOLGUIN, FAHAN & ASSOC~T~, INC. ENVIRONMENTAL MANAGEMENT cONsuLTANTS Mr. John Mrs. Deanna J. McCauley California Sheet Metal February 9, 1996 - Page 9 TABLE 1. SUMMARY OF SOURCE COMPLIANCE MONITORING ANALYTICAL RESULTS CALIFORNIA SHEET METAL, BAKERSFIELD, CALIFORNIA DATE ETHYL- TOTAL SAMPLE SOURCE SAMPLED SAMPLE I.D. TNMHC BENZENE TOLUENE BENZENE XYLENES REF (ppmv) (ppmv) (ppmv) (ppmv) (ppmv) EPA ANALYTICAL METHOD TO-12 TO-18 (GC/FID) N/A METHOD DETECTION LIMIT VARIES-SEE LABORATORY REPORT N/A INFLUENT 7-17-95 I 95-8623-2 702 33.94 83.19 5.50 42.92 A EFFLUENT 7-17-95I 95-8623-1 1.4 ND 0.08 ND 0.14 A TNMHC = Total non-methane hydrocarbons. REF = Report reference. N/A = Not applicable. ND = Not detected. A = Holguin, Fahan & Associates, Inc.'s, report dated August 4, 1995. HOLGUIN, FAHAN & ASSOC~T~, INC. ENVIRONMENTAL MANAGEMENT CONSULTANTS Mr. John Mrs. Deanna J. McCauley California Sheet Metal February 9, 1996 - Page 10 HOLGUIN, FAHAN & ASSOCIATES, INC. ENVIRONMENTAL MANAGEMENT CONSULTANTS ATTACHMENT 1. SUMMARY OF PREVIOUS WORK EUREKA ~TREET SIDEWALK T ~' G~IrE~ CHAIN-LINK FENCE ~ o3 CALIFORNIA Z SHEET METAL Cc BUILDING '~ CONCRETE SLAB ' LIMIT OF ~-~ CANOPY ', GASOLINE-CONTAINING SOILS ~ iJ.l 8-8 SCALE IN FEET ~ CHAIN-LINK FENCE 0 10 20 B-7 ALLEY ~ LEGEND MR, JOHN M, AND MRS, DEANNA J, McCAULEY '~ SOIL BORING CALIFORNIA SHEET METAL 601 EUREKA STREET BAKERSFIELD, CALIFORNIA FIGURE I - PLOT PLAN HOLGUIN, I~AHAN & ASSOCIAT]~S, INC. REVISION DATE: FEBRUARY 8. 1996: RRI TABLE 1. SUMMARY OF SOIL SAMPLE ANALYTICAL RESULTS FOR TANK REMOVAL CALIFORNIA SHEET METAL, BAKERSFIELD, CALIFORNIA SAMPLE DATE SAMPLE TPH AS ETHYL- TOTAL SOURCE SAMPLED DEPTH I.D. GASOLINE BENZENE TOLUENE BENZENE:XYLENES REF (fbg) (mg/kg) (mg/kg) (mg/kg) (rog/kg) (mg/kg) EPA ANALYTICAL METHOD 8015 (M) 8020 N/A MINIMUM REPORTING LEVEL 1.0 0.005 0.005 0.005 0.005 N/A S-1 12-17-91 8 S-1-8 810 44 170 19 153 A S-2 12-17-91 12 S-2-12 10,000 98 275 23 290 A REF = Report reference. N/A = Not applicable. A = Calpi, Inc., soil sampling event dated December 17, 1991. TABLE 2. SUMMARY OF SOIL SAMPLE ANALYTICAL RESULTS CALIFORNIA SHEET METAL, BAKERSFIELD, CALIFORNIA SAMPLE DATE SAMPLE TPH AS ETHYL- TOTAL TOTAL ORGANIC SOURCE SAMPLED DEPTH I.D. GASOLINE BENZENE TOLUENE BENZENE XYLENES LEAD LEAD REF (fbg) (mg/kg) (mg/kg) (rog/kg) (mg/kg) (mg/kg) (rog/kg) (mg/kg) EPA ANALYTICAL METHOD 8015 (M) 8020 7420 N/A METHOD REPORTING LIMIT VARIES-SEE LABORATORY REPORTS N/A B-1 3-19-92 5 B-1-5 6,000 ND (>20) 210 50 1,960 39 .2.7 A 3-19-92 15 B-1-15 6,000 ND (>100) 390 170 1,290 .... A 3-19-92 30 B-1-30 3,100 ND (>2.0) 86 71 438 4.5 -- A 3-19-92 45 B-1-45 3,000 5.0 160 75 390 .... A 3-19-92 60 B-1-60 13,000 110 1,300 300 2,560 .... A 3-19-92 75 B-1-75 ND ND ND ND ND ND -- A 3-19-92 80 B-1-80 ND ND ND ND ND .... A 3-19-92 85 B-1-85 ND ND 0.047 ND 0.014 4.5 -- A 3-19-92 90 B-1-90 ND 0.084 0.16 0.049 0.088 .... A B-2 3-19-92 15 B-2-15 12,000 1,000 1,500 340 2,480 .... A 3-19-92 30 B-2-30 400 0.2 1.2 4.7 49 3.9 -- A B-3 3-19-92 30 B-3-30 30,000 400 3,4001 800 4,300 .... A B-4 3-19-92 30 B-4-30 ND ND ND ND ND .... A 3-19-92 40 B-4-40 ND ND ND ND ND .... A 'B-5 3-19-92 15 B-5-15 ND 0.011 0.017 ND ND .... A 3-19-92 40 B-5-40 7,000 42 540 160 810 .... A B-6 3-19-92 20 B-6-20 ND ND ND ND ND 3.6 -- A 3-19-92 30 B-6-30 ND ND ND ND ND .... A 3-19-92 40 B-6-40 ND ND 0.008 ND 0.01 8.5 -- A B-7 3-8-93 20 B-7-20 ND ND ND ND ND .... B 3-8-93 30 B-7-30 ND ND ND ND ND .... B 3-8-93 50 B-7-50 ND 0.064 0.029 ND 0.015 .... B B-8 3-8-93 20 B-8-20 ND ND ND ND ND .... B 3-8-93 35 B-8-35 ND 0.079 0.11 ND 0.09 .... B B-9 3-8-93 30 B-9-30 ND ND ND ND ND .... B 3-8-93 40 B-9-40 ND ND ND ND ND .... B 3-8-93 50 B-9-50 ND 0.11 0.027 ND 0.045 .... B REF = Re~ort reference. N/A = Not applicable. ND = Not detected. -- = Not anal'~zed. A = Wilson & Associates, Inc., soil sampling event dated March 19, 1992. B = Piwarea Engineering, Inc., soil sampling event dated March 8, 1993. HOLGUIN, FAHAN & IAI.'ES, INC. ENVIRONMENTAL 143 South Figueroa Street · Ventura, California 93001 853 West 17th Street · Costa Mesa, California 92627 3157 Pegasus Drive · Bakersfield, California 93308 MANAGEMENT CONSULTANTS (805) 652-0219 · FAX (805) 652-0793 (714) 642-2660 · FAX (714) 642-2544 (805) 391-0517 · FAX (805) 391-0826 Odober 13, 1995 Mr. John M. and Mrs. Deanna J. McCauley California Sheet Metal In Care of Mr. Patrick C. Carflck Byrum, Holland & Griffin Post Office Box 2348 Bakersfield, California 93303-2348 Subject: THIRD QUARTER 1995 PROGRESS REPORT FOR CALIFORNIA SHEET METAL 601 EUREKA STREET, BAKERSFIELD, CAUFORNIA Dear Mr. and Mrs. McCauley: Holguin, Fahan & Associates, Inc., (HFA) is pleased to present the following third quarter 1995 · progress report of the ongoing remedial action at the California Sheet Metal property located at 601 Eureka Street, in the city of Bakersfield, Kern County, California (see Figure 1 - Site Location Map). The activities have included the operation of a YES under San Joaquin Valley Unified Air Pollution Control District - Southern Region (SJVUAPCD-SR) ATC Permit #S-2660-1-0. The remedial activities are being required by the City of Bakersfield Fire Department Hazardous Materials Division (BFDHMD) UST Local Oversight Program (LOP) as a result of the discovery of gasoline-containing soils surrounding the former gasoline UST at the site. SITE BACKGROUND The site previously contained a single 550-gallon gasoline UST. California Sheet Metal contracted with Calpi, Inc., to remove the UST on December 17, 1991. Gasoline hydrocarbon concentrations were detected in the soil samples collected from beneath the UST (see Attachment 1 for a summary of previous work). On March 19, 1992, six soil borings (B-1 through B-6) were drilled by Wilson & Associates, Inc., at the site, and on March 8, 1993, three additional soil borings (B-7 through B-9) were drilled by Piwarea Engineering, Inc. The soil investigations indicated TPH as gasoline concentrations to depths less than 75 fbg and less than 45 feet laterally from the former UST location (see Figure 2 - Plot Plan and Table 1 - Summary of Soil Sample Analytical Results). On January 17 and 18, 1994, HFA drilled and installed six vapor extraction wells. HFA connected the wells through 3-Inch-diameter piping to a central manifold (see Figure 3 - VES Piping ENVIRONMENTAL PLANNERS · SCIENTISTS · GEOLOGISTS AND ENGINEERS Contaminated Site Assessments * Real Estate Audits * Site Remediation * Hazardous Waste Management HOLGUIN, FAHAN & ASSOCIATES, INC. ENVIRONMENTAL MANAGEMENT CONSULTANTS Mr. John Mrs. Deanna J. McCauley California Sheet Metal October 13, 1995 - Page 2 Diagram). HFA has subsequently obtained an ATC permit from the SJVUAPCD-SR for the construction and installation of a King, Buck/Hasstech, Inc., direct-fired, thermal oxidation unit for the in-situ vapor extraction of volatile hydrocarbons in the soils at the site. Subsequently, the system was delivered and Installed at the site (see Figure 3). VES REPORT FOR THE THIRD QUARTER OF 1995 On November 28, 1994, HFA acquired ATC permit ~S-2660-1-0 for a VES utilizing an King, Buck/Hasstech, Inc., 150 scfm, direct-fired, thermal oxidizer (see Figure 3 and Figure 4- VES Schematic Diagram). On July 17, 1995, HFA conducted a source test of the treatment unit in compliance with the requirements of the ATC permit. Based on the vapor sampling and analytical results, the efficiency of the direct-fired, thermal oxidation system is greater than 99.8 percent, the maximum VOC emission Is 1.40 ppmv, and the benzene emission is less than 0.03 ppmv. Therefore, the source test demonstrated compliance with the conditions of the ATC permit (see Table 2 - Summary of Source Compliance Monitoring Analytical Results). HFA subsequently requested that the ATC permit be upgraded to a PTa. During the first 4 weeks of operation, high VOC concentrations and oxygen deficiency In the soil caused the unit to frequently shut down. During this time, vapor wells VW-1 and VW-2 were used as extraction wells while vapor wells VW-3 through VW-6 were used as air inlet wells, and the dilution air valve was completely open. As soil conditions improved, dilution air was slowly decreased until no dilution air was required, and well VW-3 was brought on line as an extraction well. HFA has operated the unit 24 hours per day since August 14, 1995, with only short periods of Inactivity for maintenance, draining of the knockout pot, and a few occurrences when the system has shut down. Since start-up, Inlet vapor concentrations have ranged from 811 ppmv to 2,000 ppmv as of September 29, 1995 (see Figure 5 - Influent and Effluent TPH Concentrations and Table 3 - Summary of YES Monitoring Data). The inlet soil vapor flow rate has been maintained near the maximum stated In the ATC permit and ranges from 66 to 120 scfm. HFA estimates the mass of gasoline hydrocarbons extracted from the subsurface since start-up to be approximately 3,339 pounds, which Is equivalent to approximately 522 gallons of gasoline (see Figure 6 - Cumulative Destruction Curve and Table 3). HOLGUIN, FAHAN & ASSOCIATES, INC. ENVIRONMENTAL MANAGEMENT CONSULTANTS Mr. John M. ~fl Mrs. Deanna J. McCauley California Sheet Metal October 13, 1995 - Page 3 ACTIVITIES PLANNED FOR THE FOURTH QUARTER OF 1995 The following activity will be completed during the fourth quarter of 1995: · continue full-time operation of the VES unit. Holguin, Fahan & Associates, Inc., trusts that you will find this third quarter 1995 progress report to your satisfaction. If you have any questions or require additional information, please contact Mr. Mark Magargee at (805) 391-0517 or at e-mail address Mark_Magargee@hfa.com. Respectfully submitted, Eric R. Casterline Environmental Technician Holguin, Fahan & Associates, Inc. erc:rri:kad Enclosures: Figure I - Figure 2 - Figure 3 - Figure 4 - Figure 5 - Figure 6 - Table 1 - Table 2 - Table 3 - Attachment 1 - Mark R. Magargee, Senior Hydrogeologlst Holguin, Fahan & Associates, Inc. Site Location Map Plot Plan VES Piping Diagram VES Schematic Diagram Influent and Effluent TPH Concentrations Cumulative Destruction Cun/e Summary of Soil Sample Analytical Results Summary of Source Compliance Monitoring Analytical Results Summary of YES Monitoring Data Summary of Previous Work cc: Mr. Ralph Huey, BFDHMD UST LOP Mr. Patrick C. Carrick, BynJm, Holland & Griffin HOLGUIN, FAHAN & ASSC~IATES, INC. ENVIRONMENTAL MANAGEMENT CONSULTANTS Mr. John M.~ Mrs. Deanna J. McCauley California Sheet Metal October 13, 1995- Page 4 ;ITE LOCATION I' LEGEND 0 0.5 1 MILE 0 1.000 2.000 3,000 4,000 5,000 FEET O 0.5 1 KILOME1ER USGS GOSFORD/LAMONI/OIL CEN1EI~JOILDALE 7..5 MINUIE SERIES QUADRANGLES $88 ~11111 4 MR. JOHN M. AND MRS. DEANNA J. McCAULEY CALIFORNIA SHEET METAL 601 EUREKA STREET BAKERSFIELD, CALIFORNIA FIGURE 1 - SITE LOCATION MAP HOLGUIN. FAHAN & ASSOCIATES, INC. HOLGUIN, FAHAN & ASSOCIATES, INC. ENVIRONMENTAL MANAGEMENT CONSULTANTS Mr. John Mrs. Deanna J. M¢Cauley California Sheet Metal October 13, 1995- Page 5 EUREKA STREET SIDEWALK ~ G~IrE~' CHAIN-UNK FENCE N------ CAEFORNIA SHEET METAL BUILDING CONCRETE SLAB CANOPY ~ ' U TOF ~ ,~ TANK EXCAVATION SCALE IN FEET ~ CHAIN-UNK FENCE 0 10 20 ~7 ALLEY ~ LEGEND MR. JOHN M. AND MRS. DEANNA J. McCAULEY SOIL BORING CALIFORNIA SHEET METAL 601 EUREKA STREET BAKERSFIELD, CALIFORNIA FIGURE 2 - PLOT PLAN HOLGUIN, FAHAN & ASSOCIATES, INC. REVISION DATE: OCTOBER 12, 1995: RRI HOLGUIN, FAHAN & ASSOCIATF~, INC. ENVIRONMENTAL MANAGEMENT CONSULTANTS Mr. John M.~I Mrs. Deanna J. McCauley California Sheet Metal October 13, 1995- Page 6 EUREKA STREET SIDEWALK T ~ GR~.E...' . CHAIN-UNK FENCE ~]---- ~ CAUFORNIA z SHEET METAL n" BUILDING '"' CONCRETE SLAB ' UMIT OF CANOPY , GASOLINE-CONTAINING ' SOILS -J YES ~ MANIFOLD VW-6 ~ CHAIN-I INK FENCE SCALE IN FEET -- AllEY 0 10 2O LEGEND MR. JOHN M. AND MRS. DEANNA J. McCAULEY CALIFORNIA SHEET METAL ~ VAPOR EXTRACTION WELL 601 EUREKA STREET "~. VES PIPING BAKERSFIELD, CALIFORNIA "' FIGURE 3 - VES PIPING DIAGRAM HOI~UIN, FAHAN & ASSOCIATES, INC. REVISION DATE: OCTOBER 12, 1995: RRI HOLGUIN, FAHAN & ASSOCIATES, INC. ENVIRONMENTAL MANAGEMENT CONSULTANTS Mr. John M. { Mrs. Deanna J. McCauley California Sheet Metal October 13, 1995 - Page 7 VW-1 VW-2 VW-3 VW-4 VW-5 VW-6 <150 scfm ~ ATMOSPHERE ( ) KNOCK4:)UT DRUM INFLUENT MONITORING POINT BLOWER WITH <150 scfm SILENCER SUPPLEMENTAL FUEL EFFLUENT MONITORING POINT THERMAL/ CATALYTIC OXIDIZER NOT TO SCALE LEGEND PRESSURE OR VACUUM GAUGE VALVE FLOW GAUGE SAMPLE TAP REVISION DATE: OCTOBER 12, 1995: RRI MR. JOHN M. AND MRS. DEANNA J. McCAULEY CALIFORNIA SHEET METAL 601 EUREKA STREET BAKERSFIELD, CALIFORNIA FIGURE 4 - VES SCHEMATIC DIAGRAM HOLGUIN, FAHAN & ASSOCIATF~, INC. HOLGUIN, FAHAN & ASSOC~T~, INC. ENVIRONMENTAL MANAGEMENT CONSULTANTS Mr. John M. Mrs. Deanna J. M¢Cauley California Sheet Metal October 13, 199,5 - Page 8 FIGURE 5 - INFLUENT AND EFFLUENT TPH CONCENTRATIONS E 10,000 1,000 lO0 10 TPH In ......................... TPH Out 0.1 2 4 6 8 Cumulative Operating Weeks 10 HOLGUIN, FAHAN & ASSOC~T~, INC. ENVIRONMENTAL MANAGEMENT CONSULTANTS ' Mr. John M. ~ Mrs. Deanna J. McCauley California Sheet Metal October 13, 1995 - Page 9 FIGURE 6 - CUMULATIVE DESTRUCTION CURVE 4,000 3,000 2,000 1,000 2 4 6 8 Cumulative Operating Weeks 10 HOLGUIN, FAHAN & ASSOCIATES, INC. ENVIRONMENTAL MANAGEMENT CONSULTANTS Mr. John M. 1~llltl Mrs. Deanna J. MoCaule¥ California Sheet Metal Ootober 13, 1995 - Page 10 TABLE 1. SUMMARY OF SOIL SAMPLE ANALYTICAL RESULTS CALIFORNIA SHEET METAL, BAKERSFIELD, CAUFORNIA SAMPLE DATE SAMPLE TPH AS ETHYL- TOTAL TOTAL ORGANIC SOURCE SAMPLED DEPTH I.D. GASOLINE BENZENE TOLUENE BENZENE XYLENES LEAD LEAD REF (fbg) (rog/kg) (rog/kg) (rng/kg) (rng/kg) (rng/kg) (rog/kg) (rng/kg) EPA ANALYTICAL METHOD 8015 (a) 8020 7420 N/A METHOD REPORTING LIMIT VARIES-SEE LABORATORY REPORTS N/A B-1 3-19-92 5 B-1-5 6,000 ND(>20) 210 50 1,960 39 2.7 A 3-19-92 15 B-1-15 6,000 ND (>100) 390 170 1,290 .... A 3-19-92 30 B-1-30 3,100 ND (>2.0) 86 71 438 4.5 -- A 3-19-92 45 B-1-45 3,000 5.0 160 75 390 -- ' -- A 3-19-92 60 B-1-60 13,000 110 1,300 300 2,560 .... A 3-19-92 75 B-1-75 ND ND ND ND ND ND -- A 3-19-92 80 B-1-80 ND ND ND ND ND .... A 3-19-92 85 B-1-85 ND ND 0.047 ND 0.014 4.5 -- A 3-19-92 90 B-1-90 ND 0.084 0.16 0.049 0.088 .... A B-2 3-19-92 15 B-2-15 12,000 1,000! 1,500 340 2,480 .... A 3-19-92 30 B-2-30 400 0.2 1.2 4.7 49 3.9 -- A B-3 3-19-92 30 B-3-30 30,000 400 3,400 800 4,300 .... A B-4 3-19-92 30 B-4-30 ND ND ND ND ND .... A 3-19-92 40 B-4-40 ND ND ND ND ND .... A B-5 3-19-92 15 13-5-15 ND 0.011 0.017 ND ND .... A 3-19-92 40 B-5-40 7,000 42 540 160 810 .... A B-6 3-19-92 20 B-6-20 ND ND ND ND ND 3.6 -- A 3-19-92 30 B-6-30 ND ND ND ND ND .... A 3-19-92 40 B-6-40 ND ND 0.008 ND 0.011 8.5 -- A B-7 3-8-93 20 13-7-20 ND ND ND ND ND .... B 3-8-93 30 B-7-30 ND ND ND ND ND .... B 3-8-93 50 B-7-50 ND 0.064 0.029 ND 0.015 .... B B-8 3-8-93 20 B-8-20 ND ND ND ND ND .... B 3-8-93 35 B-8-35 ND 0.079 0.11 ND, 0.09 .... B B-9 3-8-93 30 B-9-30 ND ND ND ND ND .... B 3-8-93 40 B-9-40 ND ND ND ND ND .... B 3-8-93 50 B-9-50 ND 0.11 0.027 ND 0.045 .... B REF = Re )o~t reference. N/A = Not applicable. -- = Not sampled or not analyzed. ND = Not detected. A = Wilson & Associates, Inc., soil sampling event dated Mamh 19, 1992. B = Piwarea Engineering, Inc., soil sampling event dated March 8, 1993. HOLGUIN, FAHAN & ASS(X21ATES, INC. ENVIRONMENTAL MANAGEMENT CONSULTANTS Mr. John Mrs. Deanna J. McCauley California Sheet Metal October 13, 1995 - Page 11 TABLE 2. SUMMARY OF SOURCE COMPUANCE MONITORING ANALYTICAL RESULTS CAUFORNIA SHEET METAL, BAKERSFIELD, CAUFORNIA DATE ETHYL- TOTAL SAMPLE SOURCE SAMPLED SAMPLE I.D. TNMHC BENZENE TOLUENE BENZENE XYLENES REF (ppmv) (ppmv) (ppmv) (ppmv) (ppmv) EPA ANALYTICAL METHOD TO-12 TO-18 (GC/FID) N/A METHOD DETECTION LIMIT VARIES-SEE LABORATORY REPORT N/A 5.N5~ A INFLUENT 7-17-95 95-8623-2 702 33.94 83.19 42.92 EFFLUENT 7-17-95 95-8623-1 1.40 ND 0.08 0.14 A TNMHC = Total non-methane hydrocarbons. REF = Report reference. N/A = Not applicable. ND = Not detected. A = Holguin, Fahan & Associates, Inc.'s, report dated August 4, 1995. HOLGUIN, FAHAN & ~IATES, INC. ENVIRONMENTAL MANAGEMENT CONSULTANTS O:c Mr. John Mrs. Deanna J. M¢Cauley California Sheet Metal October 13, 1995 - Page 12 HOLGUIN, FAHAN & ASSOCIATES, INC. ENVIRONMENTAL MANAGEMENT CONSULTANTS A'n'ACH MENT 1. SUMMARY OF PREVIOUS WORK SUMMARY OF SOIL SAMPLE ANALYTICAL RESULTS FOR TANK REMOVAL CALIFORNIA SHEET METAL, BAKERSFIELD, CAUFORNIA SAMPLE DATE SAMPLE TPH AS ETHYL- TOTAL SOURCE SAMPLED DEPTH I.D. GASOLINE BENZENE TOLUENE BENZENE XYLENES REF (fbg) (mg/kg) (mg/kg) (mg/kg) (mg/kg) (mg/kg) EPA ANALYTICAL METHOD 8015 (U) 8020 N/A MINIMUM REPORTING LEVEL 1.0 0.005 0.005 0.005 0.005 N/A $-1 12-17-91I 8 S-1-8 810 44 170 19 153 A S-2 12-17-91I 12 S-2-12 10,000 98 275 23 290 A REF = Report reference. N/A = Not applicable. A = Calpl, Inc., soil sampling event dated December 17, 1991. 08/22/95 16:41 143 $Oulh FJgueroa Street · Venlura, Cali[ornia 93001 853 Wc$i 17Ih $lrecl · CosIa Mesa, California 92627 3157 Poga~us Ddvo · Bakersfield, California 93308 ~ 001 HOLGUIN, FAHAN & A. IATFS, INC. ENVIRONMENTAL MANAGEMENT CONSULTANTS (805) 652-0219 - FAX (805)652-0793 (714) 642-2(360 * FAX (714)642-2544 (805) 391-0517 · FAX (805) 391-0526 TO: ATTN: FAX COVER SHEET (company name) (permn 1o whom fax is lo be delivered) FAX #: 32/o - 0 ~G TEL. #' FROM; NUMI~EI:I FAX OPERATOR: OF PAGES; (to verily receipt) (including this cover page) COMMENTS I SPECIAL INSTRUCTIONS: Subject & dale o! documenl: r----j Original WiLL NOT 13e mailed to recip,enl F-'-] Original documenl WILL be mailed Io rectpienl by. ..~ Hegular US Marl US Express Marl (ar.V. by 3'30 p m ne:~! day) FFederaJ Express (ar.~e by 1030 a m ne~l day) Other (pleaSe specdyl ENVIRONMENTAL PLANNERS ' SCIENTISTS · GEOLOGISTS ANO ENGINEERS Conlami~ta~e'd Silt: A.~.~e.~.~mcnl~ '" K~.-al i-~.~lale, ,~u¢lil.'~ - .',iii(- Re~'nedladon o Ilaz.atdous %~/aSle Managt-r~te~ll 08/22/95 16:42 ~ ~002 EUREKA~ SIDEWALK -- GATE CHAIN-UNK FENCE CAUFORNL~ SHEET METAL BUILDING CONCRETE SL~ ' . ro,D cH . FENCE ALLEY LEGEND JOHN M. AND DEANNA J. McCAULEY CALIFORNIA SHEET METAL 601 EUREKA STREET BAKERSFIELD, CALIFORNIA FIGURE 2 - PLOT PLAN HOLGtT]~, lrAT:M~ & ASSOC[&T?.S, ~TC. REVISON DAT~ OCTOBER 2a, 1~g9: K.tM RECORD OF TELEPHONE CONVERSATION Location: Business Name: ID# Contact Name: Business Phone: Inspector's Name: Time of Call: Type of Call: Incoming [ ] Content of Call: ~e~ ¢_..~.~ Outgoing ,[~._. # Min: ~ Returned [ ] Actions Required: Time Required to Complete Activity # Min: ~ ENVIRONMENTAL MANAGEMENT CONSULTANTS 143 South Figueroa $lreel · Venlura, California 93001 (805) 652-0219 ® FAX (805) 652-0793 853 West 17th Slreet · Costa Mesa, California 92627 (714) 642-2660 · FAX (714) 642-2544 3157 Pegasus Drive · Bakersfield. California 93308 (805) 391-0517 * FAX (805) 391-0826 August 4, 1995 Mr. Cliff Calderwood San Joaquin Valley Unified Air Pollution Control District Southern Region 2700 "M" Street, Suite 275 Bakersfield, California 93301 Subject: SOURCE COMPLIANCE MONITORING FOR THE VAPOR EXTRACTION SYSTEM AT CALIFORNIA SHEET METAL, 601 EUREKA STREET, BAKERSFIELD, CALIFORNIA gkTC PERMIT #S-2660-1-0) Dear Mr. Calderwood: This report presents the results of Holguin, Fahan & Associates, Inc.'s (HFA's) source compliance monitoring as required under the Authority to Construct (ATC) permit for the direct-fired, thermal oxidation, vapor extraction unit, which is being used for the mitigation of gasoline-containing soils associated with a release from the vehicle fueling facility at the California Sheet Metal property. HFA has conducted sampling of the influent and effluent concentrations of gasoline hydrocarbons and benzene, toluene, ethylbenzene, and total xylenes (BTEX) in accordance with Conditions #6 and #7 of the ATC permit. This study indicates that the destruction efficiency of the system complies with Condition #4, and the maximum concentration of volatile organic compound (VOC) emissions complies with Condition #17. In addition, HFA has conducted weekly field monitoring of the influent and effluent VOC emissions using a photoionization detector in accordance with Condition #12. This field monitoring is in compliance with Conditions #4 and #17 for system destruction efficiency and maximum VOC emissions. HFA respectfully requests that the ATC permit status be upgraded to a Permit to Operate (PTO) (see AHachment 1 for a copy of the ATC permit). BACKGROUND California Sheet Metal is located at 601 Eureka Street in the city of Bakersfield, Kern County, California (see Figure 1 - Site Location Map). The site previously housed a single 550-gallon, gasoline underground storage tank (UST). California Sheet Metal contracted with Calpi, Inc., to remove the UST on December 17, 1991. Concentrations of total petroleum hydrocarbons (TPH) ENVIRONMENTAL PLANNERS · SCIENTISTS ® GEOLOGISTS AND ENGINEERS (:()nl.afl'mir~al(-(l .Sil(t ^.,,4.,.;('ssni(-nls · Ri-ill I:..%lal(' ,,%t.i¢lils · Sil(' Ren~('(:li4ilion · Iliiziir(Jous '~4'aslc l~lilnilge{~T(;nl HOL©UIN, FAHAN & ~F~TES. INC. ENVIRONMENTAL MANAGEMENT CONSULT~,NTS Mr. Cliff Calderwood SJVUAPCD-SR August 4, 1995 - Page 2 as gasoline and BTEX were detected in the soil samples collected from beneath the UST. On March 19, 1992, six soil borings (B-1 through B-6) were drilled by Wilson & Associates, Inc., at the site, and on March 8, 1993, three additional soil borings (B-7 through B-9) were drilled by Piwarea Engineering, Inc., (see Figure 2 - Pict Plan). The soils investigations indicated the presence of TPH as gasoline concentrations to depths less than 75 feet below grade and less than 45 feet laterally from the former UST location. On January 17 and 18, 1994, HFA drilled and installed six vapor extraction wells. HFA connected the wells through 4-inch-diameter piping to a central manifold (see Figure 3 - VES Piping Diagram). HFA subsequently obtained an ATC permit from the San Joaquin Valley Unified Air Pollution Control District - Southern Region (SJVUAPCD-SR) for the construction and installation of a King, Buck/Hasstech, 150 cubic feet per minute (cfm), direct-fired, thermal oxidation unit for the in-situ vapor extraction of the volatile hydrocarbons in the soils at the site. Subsequently, the system was delivered and installed at the site. The SJVUAPCD-SR conducted an inspection of the system on July 17, 1995, and observed that the equipment was identical to that stated In the ATC permit and that the operating parameters were in compliance with the conditions of the ATC permit. HFA has operated the unit 24 hours per day since that time with only short interruptions for periodic maintenance, draining of the knockout pot, and a few occurrences when the system has shut down. The influent TPH concentration was maintained between 1,000 and 1,500 parts per million by volume (ppmv) (approximately 10 to 15 percent of the lower explosive limit). With the gradual decrease in the concentration of the vapor extracted from the subsurface, the unit has automatically Introduced a flow of supplemental natural gas to maintain the thermal oxidizer at a temperature above the required set point of 1,400°F in compliance with Condition ~16 of the ATC permit (see AHachment 1). Natural gas usage is averaging less than 0.1 MM Btu/hr, with the pilot flame consuming almost all of the natural gas flow. The influent soil vapor flow rate has ranged from 75 to 125 cfm. SOURCE STUDY SAMPLING METHODOLOGY On July 17, 1995, HFA and BC Laboratories, Inc., personnel collected influent and effluent vapor samples in compliance with the requirements of Condition #6 of the ATC permit. The source study consisted of obtaining vapor samples at the system influent and emission stack and submitting the samples for laboratory analyses. Vapor samples were collected using tqOI~GUIN, FA.H~N & A.~_qOCI~TE~, INC. ENVIRONMENTAL MANAGEMENT CONSULTANTS Mr. Cliff Calderwood SJVUAPCD-SR August 4, 1995 - Page 3 pre-cleaned, 3-liter TedlarTM bags. The bags were equipped with 0.25-Inch TeflonTM tubing extensions for attachment to sampling ports on the vapor extraction system piping. LABORATORY ANALYSIS Each vapor sample was analyzed using EPA Method TO-12 for methane and non-methane petroleum hydrocarbons with a minimum detection limit (MDL) of 0.01 ppmv using a gas chromatograph/flame ionization detector (GC/FID) by direct injection and backflush to the detector. Each vapor sample was also analyzed for BTEX using EPA Method TO-18 (GC/FID). ANALYTICAL RESULTS Total non-methane hydrocarbons were detected in the influent sample at a concentration of 702 ppmv and in the effluent sample at a concentration of 1.40 ppmv. Benzene was detected at a concentration of 33.94 ppmv in the influent sample. However, benzene was not detected in the effluent sample, where the MDL was 0.03 ppmv (see Table 1 - Summary of Source Compliance Monitoring Analytical Results and Attachment 2 for the laboratory report). CONCLUS4ONS Based on the vapor sampling and analytical results, the maximum VOC emission is 1.40 ppmv, the maximum benzene emission is less than 0.03 ppmv, and the destruction efficiency of the direct-fired, thermal oxidation system is 99.8 percent. Therefore, the source test demonstrated compliance with Conditions #4 and #17 of the ATC permit. HFA respectfully requests that the ATC permit status be upgraded to a PTO. HOLGUIN, FAHAN & ASSOCIATES, INC. ENVIRONMENTAL MANAGEMENT CONSULTANTS Mr. Cliff Calderwood SJVUAPCD-SR August 4, 1995 - Page 4 The services performed by Holguin, Fahan & Associates, Inc., were conducted In a manner consistent with the level of care and skill ordinarily exercised by members of its profession currently practicing under similar conditions in the state of California. No other warranty Is expressed or implied. Thank you for this opportunity to have been of service. If you have any questions regarding this report or the information contained herein, please contact me at (805) 391-0517 or at e-mail address Mark_Magargee@hfa.com. Respectfully submitted, Senior Hydrogeologist Holguln, Fahan & Associates, Inc. MRM:rri:kad Enclosures: Figure 1 Site Location Map Figure 2 - Plot Plan Figure 3 - VES Piping Diagram Table 1 - Summary of Source Compliance Monitoring Analytical Results Aflachment 1 - Copy of the ATC Permit AHachment 2 - Laboratory Report CC: Mr. Ralph Huey, Bakersfield Fire Department Hazardous Materials Division Mr. John M. McCauley, California Sheet Metal Mr. Patrick C. Carrick, Byrum, Holland & Griffin HOL(_]UIN, FAHAN & ASSOCIATES, INC. ENVIRONMENTAL MANAGEMENT CONSULTANTS Mr. ClEf Calderwood SJVUAPCD-SR August 4, 1995 - Page 5 ;ITE LOCATION ..~, . 'I:~i Itl/ 0.5 2.(X,'() 3.{g)~ 4 .-~ :" ~.{ .'__Z;Z.L_i · CALIFORNIA SHEET METAL 601 EUREKA STREET BAKERSFIELD, CALIFORNIA FIGURE 1 - SITE LOCATION MAP HOLGUIN, FAIIAN & ASSOCIATES, INC. .... ~ ~ l~ ~ ~_ =.1 ;_,=-_ :~=~/~:/;', :! _~ , ,I . . , ,, , ~ .............................................. ' ~ " .......... :";~i--i ': ¢~,%""- ..... t ....... . ...... .. :. j-- ,__: ....... ,,,..,,.,.,,~ .... ~,----~ ;?y ..... :: ............ 71ir.-.~:.. - . '- :~.~ .... ~,,;¢.:;~, ~ ~--.-~- ~ ..................... LEGEND MR. JOHN M. AND MRS. DEANNA J. McCAULEY HOLGUIN, I FAHAN & ASSOCIATES, INC. ENVIRONMENTAL MANAGEMENT CONSULTANTS Mr. Cliff Calderwood SJVUAPCD-SR August 4, ] gQ5 - Poge 6 EUREKA STREET SIDEWALK T '" ~ G,47.E..'. / CHAIN-LINKFENCE N---- I ~ CALIFORNIA Z SHEET METAL n-' BUILDING .. '~ CONCRETE SLAB ~-'~.~ CANOPY ' ~ ~ ,,- - -~£ - UMIT OF t TANK EXCAVATION SCALE IN FEET CHAIN-LINK FENCE ~ ~-7 o 10 2o ALLEY ~ I , LEGEND MR, JOHN M. AND MRS, DEANNA J, McCAULEY ~( SOIL BORING CALIFORNIA SHEET METAL 601 EUREKA STREET BAKERSFIELD, CALIFORNIA FIGURE 2 - PLOT PLAN I-IOLGUIN, I~AIIAN &ASSOC]ATE$, INC. REVISION DATE: AUGUST 1, 1995: RRI HOLGUIN, FAHAN & ~IATES, INC. ENVIRONMENTAL MANAGEMENT CONSULTANTS Mr. Cliff Calderwood SJVUAPCD-SR August 4, 1995 - Page 7 ' I I EUREKA STREET SIDEWALK ~ G,4 >~... CHAIN-LINK FENCE ~ , ~ CALIFORNIA Z SHEET METAL I ,, n" BUILDING ~ CONCRETE SLAB ~, : CANOPY :VES , ~, , ',~/ UMITOF ~ % ~VW-2 vw-~,'~, TANK EXCAVATION \ ' GASOLINE-CONTAINING ~ - - -I - - - ' \. \ SCALE IN FEET CHAIN-LINK FENCE 0 lO 20 ALLEY I I LEGEND MR. JOHN M. AND MRS. DEANNA J. McCAULEY CALIFORNIA SHEET METAL ~' VAPOR EXTRACTION WELL 601 EUREKA STREET VES VAPOR EXTRACTION SYSTEM BAKERSFIELD. CALIFORNIA ""-... VES PIPING FIGURE 3 - VES PIPING DIAGRAM HOLGUIN, FAHAN & ASSOCIATES, INC. REVISION DAIE: AUGUSl 1. 1995: RRI HOLGU1N, FAHAN & ~IATES, INC. ENVIRONMENTAL MANAGEMENT CONSULTANTS Mr. Cliff Calderwood SJVUAPCD-SR August 4, 1995 - Page 8 TABLE 1. SUMMARY OF SOURCE COMPLIANCE MONITORING ANALYTICAL RESULTS CALIFORNIA SHEET METAL, BAKERSFIELD, CALIFORNIA DATE ETHYL- TOTAL SAMPLE SOURCE SAMPLED SAMPLE I.D. TNMHC BENZENE TOLUENE BENZENE XYLENES REF (ppmv) (ppmv) (ppmv) (ppmv) (ppmv) EPA ANALYTICAL METHOD TO-12 TO-18 {GC/FID) N/A METHOD DETECTION LIMIT VARIES-SEE LABORATORY REPORT N/A INFLUENT 7-17-95 95-8623-2 7021 33.94 83.19 5.50 42.g2 A EFFLUENT 7-17-g5 g5-8623-1 1.401 ND 0.08 ND 0.14 A TNMHC = Total non-methane hydrocarbons. REF = Report reference, ppmv = Parts per million by volume. GC = Gas chromatograph. FID = Flame ionization detector. N/A = Not applicable. ND = Not detected. A = Holguin, Fahan & Associates, Inc.'s, current report. HOLGUIN, FAHAN & A.SSC~IATES, INC. ENVIRONMENTAL MANAGEMENT CONSULTANTS AI'rACHMENT 1. COPY OF THE ATC PERMIT San Joaquin Valley Unified Air Pollution Control I)istrict AUTHORITY TO CONSTRUCT PERMIT NO: s-2660-1-0 ISSUANCE DATE: I1/28/94 LEGAL OWNER OR OPERATOR: HOLGUIN FAHAN & ASSOC. INC MAILING ADDRESS: 3157 PEGASUS DRIVE BAKERSFIELD, CA 93308 LOCATION: 60~ EUREKA ST, BAKERSFIELD SECTION SW29 TOWNSHIP 29 S RANGE 28 E EQUIPMENT DESCRIPTION: GASOLINE CONTAMINATED SOIL REMEDIATION OPERATION WITH: 6 - VAPOR EXTRACTION WELLS, 7.5 HORSEPOWER VACUUM PUMP, 1.5 MMBTU THERMAL OXIDIZER, AN ENTRTAINMENT SEPARATOR, AND RELATED PIPING. CONDITIONS 1. No air contaminant shall be discharged into the atmosphere for a period or periods aggregating more than three minutes in any one hour which is dark or darker than Ringehnann 1 or equivalent to 20% opacity. 2. No air contaminant shall be released into the atmosphere which causes a public nuisance. 3. The soil rernediation system shall be nmintained in proper condition at all times. 4. The VOC control efficiency shall not be less than 99%, or the total VOC emissi°n rate shall not exceed 2.0 lb/day. 5. Sampling ports adequate for the extraction of grab samples, the rneasurement of gas flow rate, and the use of District-approved VOC detection devices shall .be provided for both the influent and effluent gas streams. Laboratory samples shall be taken at the initial inspection, under the supervision of the District inspector. Samples shall be taken from the influent and the effluent gas stream sampling ports. Laboratory samples shall be analyzed for TPH(G) in accordance with EPA Method 8015 and benzene, toluene, ethylbenzene, and xylene (BTEX') in accordance with EPA Reference Method 8020. CONDITIONS CONTINUE ON NEXT PAGE This is NOT a PERMIT TO OPERATE. Approval or denial of a PERMIT TO OPERATE will be made after an inspection to verify that the equipment has been constn,cted in accordance with the approved plans, specifications and conditions of this Authority to Construct, and to determine il' the equipment can be operated in compliance with all Rules and Regulations of the San Joaquin Valley Unified Air Polh, lion Control District. YOU MUST NOTIFY THE DISTRICT COMPLIANCE DIVISION AT (805) 861-3682 WHEN CONSTRUCTION OF THE EQUIPMENT IS COMPLETED. Unless construction has commenced pursnant to Rule 2050, this Anlhority to Construct shall expire and application shall be cancelled two years from the date of issnance. The applicant is responsible for complying with all laws, ordinances and regnlations of all other governmental agencies which may pertain to the above eqt,ipment. DAVID L., CRO.,W, EXECUTIVE DIRECTOR/Al'CO .... ! ..... ,' ~,,' 21 "'/ (/'."./".. ,/ . ., j ' ,1// SEY'I~D S A'I)I"*, 1'{I)1 fi, DIREC'i'OI*, OF PI]RM I'1 .... SI:RX"I('"SI':. Sm[tht:rn I{c,'__',,,n:d ()lficc *2700 M Street, Suite 275 *llak~_:rsl'ield, Calilbmia 93301 *(805) 861-3682' FAX (805) 861-2060 Iq9,1-I 1-28 CONDITIONS FOR S-2660-1-0 Page: 2 8. Measurements to determine the influent and effluent gas flow rates shall be taken at the initial inspection. Flow rate calculations shall be submitted to the District along with the laboratory sample analysis results. 9. Initial compliance with VOC emission rate and control efficiency requirements shall be demonstrated by the results of the laboratory sample analysis. The results shall be sut~lnitted to the District within 60 clays of the test. 10. Operation shall be equipped wilh FID (flame ionization detector), PID (photo ionization detector), or other District-approvedVOC detection device for self compliance checks. l 1. On going compliance with VOC emission rate and control efficiency requirements shall be demonstrated by salnpling the influent and effluent gas streams with FID, PID, or otherDistrict-approved VOC detection device. 12. Sampling to demonstrate ongoing compliance shall be performed at least once per month when utilizing thermal oxidizer unit. 13. Records of the cumulative running time and the measured influent and effluent VOC concentrations shall be maintained. 14. 15. 16. All records shall be retained for a minimum of 2 years, and shall be made available for District inspection upon request. The thermal oxidizer combustion chamber shall be equipped with an operating, continuously recording combustion chamber temperature indicator. The soil remediation system shall not be operated unless the combustion chamber is 1,400 degrees F or above. 17. Total VOC emissions from thermal oxidizer shall not exceed 6.5 lb/day. 18. Only liquified petroleum gas (LPG) with a sulfur content not to exceed 15 gr/100 scfof LPG or PUC quality natural gas shall be used as an auxiliary fuel for the thermal oxidizer. 19. The total NOx emission rate from the soil remediation system served by the thermal oxidizer shall not exceed 0.1 lb/MMBtu. 20. The total CO emission rate from the soil remediation system served by the thermal oxidizer shall not exceed 0.02 lb/MMBtu. 21. The District shall be notified in writing at least 30 days prior to a change from one type of control equipment to another. Only the control equiplnent specifically identified in this permit shall be used. HOLGUIN, FAHAN & ASSOCIATES, INC. ENVIRONMENTAL MANAGEMENT CONSULTANTS ATI'ACHMENT 2. LABORATORY REPORT ENVIRONMENTAL Anaytical Service, Inc. ANALYSIS REPORT SHEET BTXE by EPA-18 GC/FID Client: BC Labs Date Sampled: 7/17/95 Description: 95-8623-2 Date Analyzed: 7/18/95 Lab ID.: 50252-2 Analyst: HL Can No.: T-BAG Compound M DL Concentration Concentration ppmv ppmv mg/m3 Benzene 2.60 33.94 111.95 Toluene 2.00 83.19 323,70 Ethylbenzene 2.00 5.50 24.64 m-xylene (p-xylene) 3.60 31.93 142.94 o-Xylene 3.80 10.99 49.20 TNMHC 702 ppmV as hexane 2549 mg/m3 Notes: ND = not detected above the method detection limit (MDL). ENVIRONMENTAL Analytical Service, Inc. ANALYSi,~ REPORT SHEET BTXE by EPA-18 GCIFID Client: BC Labs Date Sampled: 7/17/95 Description: 95-8623-1 Date Analyzed: 7/18/95 Lab ID.: 50252-1 Analyst: HL Can No.: T-BAG Compound M DL Concentration Concentration ppmv ppmv mg/m3 Benzene 0.03 ND ND Toluene 0.02 0.08 0.32 Ethyl benzene 0.02 N D N D m-xylene (p-xylene) 0.04 0.10 0.43 o-Xylene 0.04 0.04 0.17 TNMHC 1.40 ppmV as hexane 5.10 mg/m3 Notes: ND = not detected above the method detection limit (MDL). ANALYTICAL REPORT Methane by GC/FID Client: BC Labs Date Analyzed: 7/18/95 Project: Analyzed by: HL EAS Client MDL CH4 Concentration ID Number ID ppmV ppmV Daily Batch QC Samples Lab Blank 0.20 ND 50252-2 QA Sample 0.20 2.19 .. 50252-2 QA Duplicate 0,20 2.05 50252-1 95-8623-1 0.20 47.32 50252-2 95-8623-2 0.20 2.19 ENVIRONMENTAL Analytical Service, Inc. I. SAMPLE REPORT Reference Number: 50252 Analysis performed for: BC Labs A. SAMPLE DESCRIPTION AND ANALYSIS REQUESTED Sample No. EAS Lab No. Analysis Requested 95-8623-1 50252- I 95-8623-2 50252-2 B. LABORATORY NARRATIVE EPA 18 GC/FID Hydrocarbons, BTXE, TPH Methane by GC/FID EPA 18 GC/FID Hydrocarbons, BTXE, TPH Methane by GC/FID All laboratory quality control criteria were met for the samples in this report. certify that t}is data package is in compliance with the terms and ~,nditions of the contract, bc~th chess, for other than the condition,s noi~M above. ~lt~ralor), Dir~'lor V [ II. QUALITY CONTROL REPORT Reference Number: 50252 Analysis performed for: BC Labs LABORATORY QC REPORT METHOD BLANK A method blank is a laboratory-generated sample which assesses the degree to which laboratory operations and procedt:res cause false-positive analytical results for your samples. A copy of the batch blank is included with the report. DUPLICATE CONTROL SAMPLES A duplicate or duplicate control sample (DCS) was analyzed as part of each daily analytical batch. A DCS is a well-characterized matrix (blank water, ambient air, or actual sample) which may or may not be spiked and run in duplicate with your sample batch. The results are on the attached Duplicate Sample/Spike results. Precision is measured in a duplicate test by Relative Percent Difference (RPD) as in: RPD= [ %RecovervTestl-%RecoveryTe,~t2 ] (Recovery'Test I + Recovery Test 2) / 2 x ENVIRONMENTAL Analytical Service, In(:;, BLANK REPORT SHEET BTXE by EPA-18 GC/FID Client: BC Labs Date Sampled: NA Description: BLANK Date Analyzed: 7/18~95 Lab ID.: NA Analyst: HL Can No.: NA Compound MDL Concentration Concentratio ppmv ppmv mg/m3 Benzene 0.0013 ND ND Toluene 0.0010 ND ND Ethylbenzene 0.0010 ND ND m-xylene (p-xylene) 0.0018 ND ND o-Xylene 0.0019 ND ND TNMHC ND ppmV as hexane ND mg/m3 Notes: ND = not detected above the method detection limit (MDL). ENVIRONMENTAL Analytical Set,vice, Inc. DUPLICATE SAMPLE RESULTS Sample: Duplcte: Batch: 50252-2 50252-2Dup 7/18~95 Method: EPA 18 by GC/FID ' Compound MDL Sample Duplicate % ppmV ppmV ppmV RPD QC Limit Benzene Toluene Eth¥1benzene m-xytene (p-xy[ene) o-xvlene 2.60 33.94 34.59 1.89 30 2.00 83.19 81.90 1.56 30 2.00 5.50 5.54 0.57 30 3.60 31.93 32.66 2.25 30 3.80 10.99 11.46 4.18 30 TNMHC as hexane 701.91 711.36 1.34 30 acgi pu~ eLUi ~qwnN o'~N sllnSe~l (u//~) PlO~ ::)~J gl6I-L~C, ((;Oil} ×VJ · t t6t~-ZZt':. (gOB) I '.LDNI ' ~=i IL-I OIV, FJ 0 ~'~-1 HOLGU]N, FAHAN & ASS ES, INC. ENVIRONMENTAL 143 South Figueroa Street · .Ventura, California 93001 853 West 17th Street · Costa Mesa, California 92627 3157 Pegasus Drive · Bakersfield, California 93308 MANAGEMENT CONSULTANTS (805) 652-0219 · FAX (805) 652-0793 (714) 642-2660 · FAX (714) 642-2544 (805) 391-0517 · FAX (805) 391-0826 August 3, 1995 Mr. John M. and Mrs. Deanna J. McCauley California Sheet Metal In Care of Mr. Patrick C. Carfick Byrum, Holland & Griffin Post Office Box 2348 Bakersfield, California 93303-2348 RECEIVED H Z. T. Subject: SECOND QUARTER 1995 PROGRESS REPORT FOR CALIFORNIA SHEET METAL 601 EUREKA STREET, BAKERSFIELD, CALIFORNIA Dear Mr. and Mrs. McCauley: Holguin, Fahan & Associates, Inc., (HFA) is pleased to present the following progress report of the ongoing remedial action at the California Sheet Metal property located at 601 Eureka Street, in the city of Bakersfield, Kern County, California (see Figure 1 - Site Location Map). The activities have included the installation of a soil vapor extraction system (VES) under San Joaquin Valley Unified Air Pollution Control District - Southern Region (SJVUAPCD-SR) Authority to Construct (ATC) Permit #S-2660-1-C]. The remedial activities are being required by the City of Bakersfield Fire Department Hazardous Materials Division (BFDHMD) Underground Storage Tank (UST) Local Oversight Program (LOP) as a result of the discovery of gasoline-containing soils surrounding the former gasoline UST at the site. SITE BACKGROUND The site previously housed a single 550-gallon, gasoline UST. California Sheet Metal contracted with Calpi, Inc., to remove the UST on December 17, 1991. Concentrations of gasoline hydrocarbons were detected in the soil samples collected from beneath the UST (see Attachment 1 for a summary of previous work). On March 19, 1992, six soil borings (B-1 through B-6) were drilled by Wilson & Associates, Inc., at the site, and on March 8, 1993, three additional soil borings (B-7 through B-9) were drilled by Piwarea Engineering, Inc. The soils investigations indicated the presence of TPH as gasoline concentrations to depths less than 75 feet below grade and less than 45 feet laterally from the former UST location (see Figure 2 - TPH as Gasoline/Benzene Concentrations in Soil and Table 1 - Summary of Soil Sample Analytical Results). ENVIRONMENTAL PLANNERS · SCIENTISTS · GEOLOGISTS AND ENGINEERS Contaminated Site Assessments * Real Estate Audits * Site Remediation * Hazardous Waste Management HOLGUIN, FAHAN & ASSOCIATe, INC. ENVIRONMENTAL MANAGEMENT CONSULTANTS Mr. John M. Mrs. Deanna J. McCauley California Sheet Metal August 3, 1995 - Page 2 On January 17 and 18, 1994, HFA drilled and installed six vapor extraction wells. HFA connected the wells through 4-inch-diameter piping to a central manifold (see Figure 3 - VES Piping Diagram). HFA has subsequently obtained an ATC permit from the SJVUAPCD-SR for the construction and Installation of a King, Buck/Hasstech, direct-fired, thermal oxidation unit for the in-situ vapor extraction of volatile hydrocarbons in the soils at the site. Subsequently, the system was delivered and installed at the site (see Figure 3). VE$ REPORT FOR THE SECOND QUARTER OF 1995 During the second quarter of 1995, the electrical and natural gas utilities were connected to the VES unit and activated. The VES unit was then turned on and observed to operate properly. An inspection of the system has been scheduled with the SJVUAPCD-SR for the beginning of the third quarter of 1995, which will include source compliance testing. Upon verifying that the VES unit's emissions are in compliance with the conditions contained in the ATC permit, HFA will request that the permit be upgraded to a Permit to Operate (PTO) and the unit be placed into full-time operation. ACTIVITIES PLANNED FOR THE THIRD QUARTER OF 1995 The following activities will be completed during the third quarter of 1995: · start-up the VES unit and conduct source compliance testing; · obtain a PTO from the SJVUAPCD-SR for the VES unit; and · initiate full-time operation of the VES unit. HOLGUIN, FAHAN & A,SS3~IATES, INC. ENVIRONMENTAL MANAGEMENT CONSULTANTS Mr. John M.~ Mrs. Deanna J. McCauley California Sheet Metal August 3, 1995 - Page 3 Holguln, Fahan & Associates, Inc., trusts that you will find this second quarter 1995 progress report to your satisfaction. If you have any questions or require additional Information regarding this report, please contact me at (805) 391-0517 or at e-mail address Mark_Magargee@hfa.com. Respectfully submitted, Mark R. Magargee, I~.G. Senior Hydrogeologist HM°lRgMu:ir;::i~an & Ass°ciates' Inc' Enclosures: Figure 1 - Site Location Map Figure 2 - TPH as Gasoline/Benzene Concentrations in Soil Figure 3 - VES Piping Diagram Table 1 - Summary of Soil Sample Analytical Results Attachment 1 - Summary of Previous Work cc: Mr. Ralph Huey, BFDHMD UST LOP Mr. Patrick C. Carrick, Byrum, Holland & Griffin HOLGUIN, FAHAN & ASSOCIATES, INC. ENVIRONMENTAL MANAGEMENT CONSULTANTS Mr. John M. Mrs. Deanna J. McCauley California Sheet Metal August 3, 1995 - Page 4 ~ ~ * ..... ' ' ~ 2~ t~[~-?:.::.':'~i~,~j~;~~-**~ 4N~-_..~:.~,.~..:_~ :..' ~ ~ ; !; . ~ '. ' ~',~ ~ =~ ~;~- f~ ~ [~-~::.."'"I:,'- F, " ~"~: · =~'- / II I! II II II ~'~T- ~ ': - ~_~.=~ ..... -~_ ~__, - ~ ~.. ~:~:~~~~ ........ .... ...... I'~..'~ ~q~.:, '*, ~ ~. ~'~-*, LEGEND MR. JOHN M. AND MRS. D~NNA J. McCAULEY 0 0.5 I MILE CALIFORNIA SHEET METAL ~ I ~ ~--~ I L *~<._~ I/ 601 EURE~ STREET 0 1.~ 2.~ 3.~ 4.~ 5.~ FEET ~ BAKERSFIELD, CALIFORNIA 0 0.5 1 K~OMETER / FIGURE 1 - SITE LOCATION MAP I USGS ~SFORD~AMONT~IL CENTE~OILD~E 7.5 MINUTE SERIES QUADRANGLES ~O~U~, ~ ~ ~SOC~T~S, I~C, HOLGUIN, FAHAN & ASSOCIATF , INC. ENVIRONMENTAL MANAGEMENT CONSULTANTS Mr. John Mrs. Deanna J. McCauley California Sheet Metal August 3.1995 - Page 5 I=UREKA STREET H SIDEWALK CAUFORNIA SHEET METAL BUILDING CONCRETE S~B CHAIN-LINK FENCE D_ef3th TPH Eter~ene' I 20 I ND ND I 30 I ND I ND CANOPY ~4o I .ND I ND CHAIN-LINK FENCE SCALE IN FEET 10 2O I I LEGEND SOIL BORING TPH TOTAL PETROLEUM HYDROCARBONS AS GASOLINE fbg FEET BELOWGRADE ND NOT DETECTED 6 0001 ND 15 6,000 ND 4~ 31001 ND 3,000 5.0 60 13.000 110 .o ND  ND ND ND 0.084 ALLEY _D~h TPH Benzene 20 [ ND ND ! 3O I ND ND ~ I 50 I ND I 0.064 I ~' MR. JOHN M. AND MRS. DEANNA J. McCAULEY CAUFORNIA SHEET METAL 601 EUREKA STREET BAKERSFIELD, CALIFORNIA FIGURE 2 - TPH AS GASOLINE/BENZENE CONCENTRATIONS IN SOIL HOLGUIN, FAHAN & ASSOCIATES, INC. REVISION DATE: AUGUST 3, 1995: RRI HOLGUIN, FAHAN & ASSOCIATES, INC. ENVIRONMENTAL MANAGEMENT CONSULTANTS Mr. John M. Mrs. Deanna J. McCauley California Sheet Metal August 3, 1995 - Page 6 [VREKASTREET CALIFORNIA SHEET METAL BUILDING CANOPY SIDEWALK CONCRETE SLAB CHAIN-LINK FENCE i --- ~VW-4 I I '~.,, '-x EMIT OF ~-2 ~-3, x TANK EXCAVATION SOI~ ~-1 'X,X,X SCALE IN FEET CHAIN-LINK FENCE 0 10 20 I I LEGEND ~' VAPOR EXTRACTION WELL VES VAPOR EXTRACTION SYSTEM x.... VES PIPING REVISION DATE: AUGUST 1, 1995: RRI ALLEY MR. JOHN M. AND MRS. DEANNA J. McCAULEY CALIFORNIA SHEET METAL 601 EUREKA STREET BAKERSFIELD. CALIFORNIA FIGURE 3 - VES PIPING DIAGRAM HOLGUIN, FAHAN & ASSOCIATES, INC. HOLGUIN, FAHAN & ASSOC~T~, INC. ENVIRONMENTAL MANAGEMENT CONSULTANTS Mr. John M. Mrs. Deanna J. McCauley California Sheet Metal August 3, 1995 - Page 7 TABLE I. SUMMARY OF SOIL SAMPLE ANALYTICAL RESULTS CALIFORNIA SHEET METAL, BAKERSFIELD, CALIFORNIA SAMPLE DATE SAMPLE TPH AS ETHYL- TOTAL TOTAL ORGANIC SOURCE SAMPLED DEPTH I.D. GASOLINE BENZENE TOLUENE BENZENE XYLENES LEAD LEAD REF (fhg) (rng/kg) (rog/kg) (rng/kg) (rng/kg) (rng/kg) (rng/kg) (rng/kg) EPA ANALYTICAL METHOD 8015 (M) 8020 7420 N/A METHOD REPORTING LIMIT VARIES-SEE LABORATORY REPORTS N/A B-1 3-19-92 5 B-1-5 6,000 ND (>20) 210 50 1,960 39 2.7 A 3-19-92 15 B-1-15 6,000 ND (>100) 390 170 1,290 .... A 3-19-92 30 B-1-30 3,100 ND (>2.0) 861 71 438 4.5 -- A 3-19-92 45 B-1-45 3,000 5.0 160 75 390 .... A 3-19-92 60 B-1-60 13,000 110 1,300 300 2,560 .... A 3-19-92 75 B-1-75 ND ND ND ND ND ND -- A 3-19-92 80 B-1-80 ND ND ND ND ND .... A 3-19-92 85 B-1-85 ND ND 0.047 ND 0.014 4.5 -- A 3-19-92 90 B-1-90 ND 0.084 0.16 0.049 0.088 .... A B-2 3-19-92 15 B-2-15 12,000 1,000, 1,500 340 2,480 .... A 3-19-92 30 B-2-30 400 0.2 1.2 4.7 49 3.9 -- A B-3 3-19-92 30 B-3-30 30,000 400 3,400 800 4,300 .... A B-4 3-19-92 30 B-4-30 ND! ND ND ND ND .... A 3-19-92 40 B-4-40 ND ND ND ND ND .... A B-5 3-19-92 15 B-5-15 ND 0.011 0.017 ND ND .... A 3-19-92 40 B-5-40 7,000 42 540 160 810 .... A B-6 3-19-92 20 B-6-20 ND ND ND ND ND 3.6 -- A 3-19-92 30 B-6-30 ND ND ND ND ND ..... A 3-19-92 40 B-6-40 ND ND 0.008 ND 0.01 8,5 -- A B-7 3-8-93 20 B-7:20 ND ND ND ND ND .... B 3-8-93 30 B-7-30 ND ND ND ND ND .... B 3-8-93 50 B-7-50 ND 0.064 0.029 ND 0.015 .... B B-8 3-8-93 20 B-8-20 ND ND ND ND! ND .... B 3-8-93 35 B-8-35 ND 0.079 0.11 ND 0.09 .... B B-9 3-8-93 30 B-9-30 ND ND ND ND ND .... B 3-8-93 40 B-9-40 ND ND ND ND ND .... B 3-8-93 50 B-9-50 ND 0.11 0.027 ND 0.045 .... B fbg = feet below grade. TPH = Total petroleum hydrocarbons. REF = Report reference. N/A = Not applicable. -- = Not sampled or not analyzed. ND = Not detected. A = Wilson & Associates, Inc., soil sampling event dated Mamh 19, 1992. B = Piwarea Engineering, Inc., soil sampling event dated Mamh 8, 1993. HOLGUIN, FAHAN & ASSOC~T~, INC. ENVIRONMENTAL MANAGEMENT CONSULTANTS ATTACHMENT 1. SUMMARY OF PREVIOUS WORK TABLE i. SUMMARY OF SOIL SAMPLE ANALYTICAL RESULTS FOR TANK REMOVAL CALIFORNIA SHEET METAL, BAKERSFIELD, CALIFORNIA SAMPLE DATE SAMPLE TPH AS ETHYL- TOTAL SOURCE SAMPLED DEPTH I.D. GASOLINE BENZENE TOLUENE BENZENE XYLENES REF (fbg) (rng/kg) (rng/kg) (rng/kg) (rng/kg) (rng/kg) EPA ANALYTICAL METHOD 8015 (M) 8020 N/A METHOD REPORTING LIMIT VARIES-SEE LABORATORY REPORTS N/A 8-2 12-17-91 12 S-2-12 10,000 275 23 290 A fbg = feet below grade. TPH = Total petroleum hydrocarbons. REF = Report reference. N/A = Not applicable. A = Calpl, Inc., soil sampling event dated December 17, 1991. G J L Environmental Gary J. Leafy, R.EJL Environmental Consultant 4009 FAmWOOD ST. BAKERSFIELD, CA 93306-1310 (805) 872-1543 April 15, 1995 BAKERSFIELD CITY FIRE DEPARTMENT Hazardous Material Division 2130 "G" Street Bakersfield, California 93301 Re: 601 Eureka Street, Bakersfield, California Property Owners: John M. and Deanna J. McCauley Subject: First Quarter Status Report for 1995 Prepared by: GJL ENVIRONMENTAL Gary J. Leafy, R.E.A. Status of Investigation and Cleanup Activities Including the Results of All Investigations Implemented to Date The San Joaquin Valley Unified Air Pollution Control District - Southern Region (SJVUAPCD-SR) has responded that due to the property being within 1,000 feet of the adult Vista East Higi~School, public notification of the parents of al! high school attendees as well as ali residences within 1,000 feet was required under Section 42501.6 of the. California Health a~d Safely Code~-'Ti~e.pub~ic notification ~illbc coordhiated-by: 'ffic. S°'¥UA~PCD,SR-and is in progress at this time. SJVUAPCD-SR should have completed the notification by this time, but it is not complete. The following activities were completed during the First Quarter: Complete public notification process; Obtain ATC.for VES unit; * Install and start-up VES unit. Vapor extraction system design and air pollution permit work. On January 17 and 18, 1994, six vapor extraction wells were drilled and installed. A vapor extraction test was conducted on January 26, 1994, to determine site-specific. Parameters for use in the evaluation and designing the vapor extraction system. The consulting firm ofHolguin, Fahan & Associates has written the Corrective Action Plan. The Bakersfield City Fire Department the lead agency has approved the Corrective Action Plan. "Exhibit 1" On March 8, 1993 an Expanded Site Characterization was undertaken. On March 19 - 20, 1992, a site characterization was performed to define the vertical and horizontal extent of the contamination plume. No cleanup activities have been implemented. The following activities were completed during the fourth quarter of 1994. Public Notification has been completed. Plumbing for Vapor Extraction Unit has been completed. Vapor Extraction Unit has been installed. 2 Next Phase of Investigation Remediation will begin. The authority to construct should be issued this quarter from San Joaquin Valley Unified Air Pollution Control District. Then the vapor extraction unit will be installed and remediation will begin. Drilling of Vapor Extraction Wells is scheduled to commence on January 17, 1994. The environmental consulting firm has been selected, it is Holguin, Fahan & Associates. The Corrective Action Plan will be written and work should begin before the end of 1993. On August 13, 1993, an Invitation for Bids was issued to four (4) environmental consulting firms, to supplement and implement a Corrective Action Plan. If the Bakersfield City Fke Department the lead agency in this project agrees with P1WAREA ENGINEERING, INC. Findings from the Expanded Site Characterization: An Invitation for Bids Will be issued this quarter,' to install the Vapor Extract Wells and treatment unit. On November 16, 1992, the Bakersfield City Fire Department, the lead agency, issued a letter which agreed with site assessment recommendation from John R. Wilson and Associates. An Invitation for Bids was issued on December 23, 1992, to four (4) environmental consulting Method of Cleanup Proposed or Implemented to Date The cleanup method proposed is a vapor extraction unit. This was acceptable to the Bakersfield City Fire Department. Time Schedules for the Completion of the Investigation of the Site and Remediation A time schedule will be included as part of the Corrective ActiOn Plan. Method and Location of Disposal of the Released Hazardous Substance and any Contaminated Soil, Ground Water or Surface Water None has been chosen at this time. Manifest Required for Transport of Hazardous Substances No material was manifest off site this quarter. Monitoring Well Data Including Ground Water Elevation, pH, Conductivity, Temperature and Gradient No monitoring wells have been installed at this time. Tabulated Analytical Results of Ground Water or Soil Sam/}lin~ None in this Quarter. A Site Map Showinl~ the "Zero Line" of Contamination if Known, and Changes in Analyses and Gradient Measurements Over the Last Quarter None in the Fourth Quarter. Tabulated Data for all Monitoring Wells Including Ground Water Elevations Collected to Date No monitoring wells have been installed at this time. A Site Map Delineatim, Ground Water Elevation Contours Based on Recent Data~ if the Site is in Remediation~ Define the Zone of Capture for any Extraction Well(s) on the Contour Map Does not apply at this time. Tabulated Analytical Results from all Previous Sampling Events Including Laboratory Reports for the Most Recent Sampling Event and Chain of Custody Documentation This can be found in the Fourth Quarter Report. Site Map Delineating Contamination Contours for Soil and GrOund Water Based on Recent Data' The site map delineating contamination contours for soil. This map was in the Second Quarter Report of 1993. The Quantity of Ground Water, Vapors, and Hydrocarbons Removed (in Gals., cu. ft., and lbs., RespectivelyL During the Reporting Period and Cumulative to Date Does not apply at this time. Times and Dates Equipment Was Not Operating, Cause of Shutdown~ and a Corrective Action Plan to Insure Similar Shutdowns do not Reoccur {Proposed .Corrective Actions are to be Completed Within 30 Days of the System Shutdown) Does not apply at this time. Estimates of the Quantity of Contamination Remaining in Soil and Ground Water, and Time for Completing Remediation Does not apply at this time. Sincerely, GJL ENVIRONMENTAL Gary J. Leary, R.E.A. J L Environmenta Gary J. Leary, R.E.A~ Environmental Consultant 4009 FAmWOOD ST. BAKERSFIELD, CA 93306-1310 (805) 872-1543 February 23, 1995 BAKERSFIELD CITY FIRE DEPARTMENT Hazardous Material Division 2130 "G" Street Bakersfield, California 93301 Re: 601 Eureka Street, Bakersfield, California Property Owners: John M. and Deanna J. McCauley Subject: Fourth Quarter Status Report for 1994 ~Prepared by: GIL--'~7~------A-- -Qt'TALENVIKONMEN ~ ~ - Gary J. Leafy, R.EA. Status of Investigation and Cleanup Activities Including the ResUlts of All Investigations Implemented to Date The San Joaquin Valley Unified Air Pollution Control District - Southern Region (SJVUAPCD-SR) has responded that due to the property being within 1,000 feet of the adult Vista East High School, public notification 'of the parents of all high school attendees as well as all residences ~vithin 1,000 feet was required-under Section-42301.6 of the California Health and Safety Code. The public 'notification will be coordinated by the SJVUAPCD-SR and is in progress at this time. SJVUAPCD-SR should have completed the notification by this time, but it is not complete. The following activities should be in progress during the Fourth Quarter: Complete public notification process; * Obtain ATC for VES unit; * Install and start-up VES unit. Vapor extraction system design and air pollution permit work. On January 17 and 18, 1994, six vapor eXtraction wells were drilled and installed. A vapor extraction test was conducted on January 26, 1994, to determine siteTspecific. Parameters for use in the evaluation and designing the vapor extraction system. The consulting firm ofHolguin, Fahan & Associates has written the Corrective Action Plan. The Bakersfield City Fire Department the lead agency has approved the Corrective Action Plan. "Exhibit 1". On March 8, 1993 an Expanded Site Characterization was undertaken. On March 19 - 20, 1992, a site characterization was performed to define the vertical and horizontal extent of the contamination plume. No cleanup activities have been implemented. The following activities were completed during the foUrth quarter of 1994. Public Notification has been completed. Plumbing for Vapor Extraction Unit has been completed. Vapor Extraction Unit has been installed. Next Phase of Investigation Remediation will begin. The authority to construct' should be issued this quarter from San Joaquin Valley Unified Air Pollution ControlDistfiC~ Then the vapor extraction-unit will be installed and remediation will begin. Drilling of Vapor Extraction Wells is scheduled to commence on January 17, 1994. The environmental consulting firm has been selected, it is Holguin, Fahan & Associates. The Corrective Action Plan will be written and work should begin before the end of 1993. On August 13, 1993, an Invitation for Bids was issued to four (4) environmental consUlting firms, to supplement and implement a Corrective Action Plan. If'the Bakersfield City Fire Department the lead agency in this project agrees with PIWAREA ENGINEERING, INC. Findings from the Expanded Site Characterization. An Invitation for Bids will be issued this quarter, to install the Vapor Extract Wells and treatment unit. On November 16, 1992, the Bakersfield City Fire Department, the lead agency, issued a letter which agreed with site assessment recommendation from John R. Wilson and Associates.. An Invitation for Bids was issued on December 23, 1992, to four (4) environmental consulting Method of Cleanup Proposed or Implemented to Date The cleanup method proposed is a vapor extraction unit. This was acceptable to the Bakersfield City Fire Department. Time Schedules for the COmpletion of the Investigation of the Site and Remediation A time schedule will be included as part of the Corrective Action Plan. Method and Location of Disposal of the Released Hazardous Substance and any Contaminated Soil, Ground Water or Surface Water None has been chosen at this time. Manifest Required for Transport of Hazardous Substances No material was manifest off' site this quarter. Monitorin~ Well Data Including Ground Water Elevation, pH, Conductivity, Temperature and Gradient No monitoring wells have been installed at this time. Tabulated Analytical Results of Ground Water or Soil Sampling None in this Quarter. A Site Map Showing the "Zero Line" of Contamination if Known, and Changes in Analyses and Gradient Measurements Over the Last Quarter None in the Fourth Quarter. Tabulated Data for all Monitoring Wells Including Ground Water Elevations Collected to Date No monitoring wells have been installed at this time. A Site Map Delineating Ground Water Elevation Contours Based on Recent Data; if the Site is in Remediation, Define the Zone of Capture for any Extraction Well(s) on the Contour Map Does not apply at this time. 4 Tabulated Analytical Results from all Previous Sampling Events Including Laboratory Reports for the Most Recent Sampling Event and Chain of Custody Documentation This can be found in the Fourth Quarter Report. -Site Map Delineating~Contamination Contours for Soil and Ground Water Based on Recent Data The site map delineating contamination contours for soil. This map was in the Second Quarter Report of 1993. The Quantity of Ground Water~ Vapors~ and Hydrocarbons Removed (in Gals., cu. ft.~ and lbs, Respectively), During the Reporting Period and CUmulative to Date Does not apply at this time. Times and Dates Eqnipment Was Not Operating~ Cause of Shutdown, and a Corrective Action Plan to Insure Similar Shutdowns do not Reoccur (Proposed Corrective Actions are to be Completed Within 30 Days of the System Shutdown} Does not apply at this time. Estimates of the Quantity of Contamination Remaining in Soil and Ground Water~ and Time for Completing Remediation Does not apply at this time. Sincerely, GJL ENVIRONMENTAL Gary J. Leafy, R.E.A. G J L Environmental Gary J. Leafy, R. E2~. Environmental Consultant 4009 FAIl/WOOD ST. BAIr~-RSFIELD, CA 93306-1310 (805) 872-1543 NOV 3 1994 October 20, 1994 BAKERSFIELD CITY FIRE DEPARTMENT Hazardous Material Division 2130 "G" Street Bakersfield, California 93301 Re: 601 Eureka Street, Bakersfield, California Property Owners: John M. and Deanna J. McCauley Subject: Third Quarter Status Report for 1994 Prepared by: GJL ENVIRONMENTAL Gary J. Leary, R.E.A. The San Joaquin Valley Unified Air Pollution Control District - Southern Region (SJVUAPCD-SR) has responded that due to the property being within 1,000 feet of the adult Vista East High School, public notification of the parents of all high school attendees as well as all residences within 1,000 feet was required under Section 42301.6 of the California Health and Safety Code. The public notification will be coordinated by the SJVUAPCD-SR and is in progress at this time. SJVUAPCD-SR should have completed the notification by this time, but it is not complete. The folloWing activities should be in progress during the Fourth Quarter: Complete public notification process; Obtain ATC for VES unit; Install and start-up VES unit. Status of Investigation and Cleanup Activities Including the Results of All Investigations Implemented to Date 1. Vapor extraction system design and air pollution permit work. On January 17 and 18, 1994, six vapor extraction wells were drilled and installed. A vapor extraction test was conducted on January 26, 1994, to determine site-specific. Parameters for use in the evaluation and designing the vapor extraction system. The consulting firm of~olguin, Fahan & Associates has written the Corrective Action Plan. The Bakersfield City Fire Department the lead agency has approved the Corrective Action Plan. "Exhibit 1". On March 8, 1993 an Expanded Site Characterization was undertaken. On March 19 - 20, 1992, a site characterization was performed to define the vertical and horizontal extent of the contamination plume, No cleanup activities have been implemented. 2 Next Phase of Investigation 2. Remediation will begin. The authority to construct should be issued this quarter from San Joaquin Valley Unified Air Pollution Control District. Then the vapor extraction unit will be installed and remediation will begin. Drilling of Vapor Extraction Wells is scheduled to commence on January 17, 1994. The environmental consulting firm has been selected, it is Holguin, Fahan & Associates. The Corrective Action Plan will be written and work should begin before the end of 1993. On August 13, 1993, an Invitation for Bids was issued to four (4) environmental consulting firms, to supplement and implement a Corrective Action Plan. If the Bakersfield City Fire Department the lead agency in this project agrees with PIWAREA ENGINEERING, INC. Findings from the Expanded Site Characterization. An Invitation for Bids will be issued this quarter, to install the Vapor Extract Wells and treatment unit. On November 16, 1992, the Bakersfield City Fire Department, the lead agency, issued a letter which agreed with site assessment recommendation from John R. Wilson and Associates. An Invitation for Bids was issued on December 23, 1992, to four (4) environmental consulting firms. Method of Cleanup Proposed or Implemented to Date The cleanup method proposed is a vapor extraction unit. This was acceptable to the Bakersfield City Fire Department. Time Schedules for the Completion of the Investigation of the Site and Remediation A time schedule will be included as part of the Corrective Action Plan. Method and Location of Disposal of the Released Hazardous Substance and any Contaminated Soil, Ground Water or Surface Water None has been chosen at this time. Manifest Required for Transport of Hazardous Substances No material was manifest off site this quarter. Monitoring Well Data Including Ground Water Elevation, pH, Conductivity, Temperature and Gradient No monitoring wells have been installed at this time. Tabulated Analytical Results of Ground Water or Soil Samlffing None in this Quarter. A Site Map Showing the "Zero Line" of Contamination if Known~ and Changes in Analyses and Gradient Measurements Over the Last Quarter None in the Fourth Quarter. Tabulated Data for all Monitoring Wells Including Ground Water Elevations Collected to Date No monitoring wells have been installed at this time. A Site Map Delineating Ground Water Elevation Contours Based on Recent Data~ if the Site is in Remediation~ Define the Zone of Capture for any Extraction Well(s) on the Contour Map Does not apply at this time. 4 · Tabulated Analytical Results from all Previous Samolin~ Events Including Laboratory Reports for the Most Recent Sampling Event and Chain of Custody Documentation This can be found in the Fourth Quarter Report. Site Map Delineating Contamination Contours for Soil and Ground Water Based on Recent Data The site map delineating contamination contours for soil. This map was in the Second Quarter Report of 1993. The Quantity of Ground Water, Vapors, and Hydrocarbons Removed (in Gals., cu. ft., and lbs., Respectively),. During the Reporting Period and Cumulative to Date Does not apply at this time. Times and Dates Equipment Was Not Operating~ Cause of Shutdown, and a Corrective Action Plan to Insure Similar Shutdowns do not Reoccur (Proposed Corrective Actions are to be Completed Within 30 Days of the System Shutdown) Does not apply at this time. Estimates of the Quantity of Contamination Remaining in Soil and Ground Water, and Time for Completing Remediation Does not apply at this time. Sincerely, GJL ENVIRONMENTAL UNDERGROUND STORAGE TANK UNAUTHORIZED RELEASE (LEAK) / CONTAMINATION SITE REPORT EMERGENCY HAS STATE OFFICE OF EMERGENCY SERVICES HEART SEE. ~,~O NAME OF I~DIVIDU~ FILING REPORT PHONE SIGNA~R ~ REPRESENTING ~ OWNE~PE~TOR ~ REGION~ BOARD I COMPANY OR ~ENCY NAME ~ OTHER ~ ADDRESS ~RE~ C~ ~A~ ZIP ~ NAME [ ~NT~TPERSON ~ PHONE ADDRESS STRE~ C~ STA~ FAClLI~ N~E (IF APPLICABL~ OPE~TOR ~ PHONE ~ ADDRESS ~ ~RE~ C~ ~U~ ZIP ~ CROSS STREET O L~AL AGENCY AGENCY N~E ~NTACT PERSON PHONE ~z ~ ~ REGION~BOARD PHONE m (1) NAME QUANTI~ LOST (~LLONS) ~ ~ ~,~ ~ u.~.ow. ~ DATE DIS~VERED HOW DIS~VERED ~ INVENTORY ~NTR~~ ~ SU~URFACE MONITORING~ ~ NUIS~CE CONDITIONS ~ DA~ DI~HARGE BE~N M~HOD USED TO STOP DISCHARGE (CHECK ~L ~AT APPLY) ~ ul MI Ol DI YI VI ~ UNKNOWN ~EMOVE CON~NTS ~ CLOSE TANK & REMOVE ~ REPAIR PIPING  HAS DISCHARGE BEEN STOPPED ? ~ REPAIR TANK ~ CLOSE TANK & FILL IN P~CE ~ CHANGE PR~EDURE ~ SOURCE OF DI~HARGE CAUSE(S) = ~ ~ TANK~AK ~ UNKNOWN ~ OVERFILL ~ RUPmR~AILURE ~ SPILL ~ ~ ~ PIPING L~K "' ~ OTHER ~ ~RROSION ~ UNKNOWN ~ OTHER~ ~ m CHECK ONE ONLY ~ UNDE~RMINED ~ SOIL ONLY ~ GROUNDWATER ~ DRINKING WATER - (CHECK ONLY IF WATER WELLS HA~ AC~ALLY aEEN AFFEC~D) CHECK ONE ONLY ~ NO AC~ON TArN ~ PRELIMINARY SI~ A~E~MENT ~RKP~N SUBM~ED ~ POLLUTION CHARAC~RI~TION ~ < ~ LE~ BEING ~NFIRMED ~ PRELIMINARY SI~ A~ESSMENT UNDERWAY ~ POST CLE~UP MONITORING IN PROGRE~ ~ REMED~AT~ON P~N ~ CASE CLOSED (CLE~UP ~MPLE~D OR UNNECE~AR~ ~ CLE~UPUNDERWAY CHECK APPROPRIATE ACTION(S) ~ EXCAVA~ & DISUSE (ED) ~ REMOVE FREE PRODUCT (FP) ~ ENH~CED BIO DEGRADATION (l~ ~ ~ CAPSI~(CD) ~ EXCAVATE&TREAT(E~ ~ PUMP&TREATGROUNDWA~R(G~ REP~CE SUPPLY (RS) ~o ~ CONTAINMENT BARRIER (CB) ~ NO ACTION REQUIRED (NA) ~ TREA~ENTATH~P(HU) ~ VENT~IL~S) ~< ~ VACUUM EXTRACT ~ ~ OTHER (0~ HSC O5 't UNDERGROUND STORAGE TANK UNAUTHORIZED RELEASE (LEAK) / CONTAMINATION SITE REPORT REPRESENTING ~ OWNEmPE~TO" ~ REGION~BOARD ~ ~PA~ OR AGENCY NAME ADDRESS NAME..~. ~ ~NT~T[ PERSON [ PHONE ADDRESS CROSS STREET L~AL AGENCY AGENCY N~E ~NTACT PERSON PHONE REGION~ BOARD PHON~ (1) NAME QUANTI~ LOST (~LLONS) UNKNOWN (2) ~ UNKNOWN DATE DI~VERED ~ HOW DIS~VERED ~ INVENTORY ~NTROL ~ SU~URFACE MONITORING ~ NUlS~CE CONDITIONS ~ ~1 ~ ~1 ~: I ~ YI ~Y ~ TANK ~ST ~ TANK REMOVAL ~ 'OTHER d "1 ol PI *l ' *l ...:~ UNKNOWN ~ REMOVE ~N~N~ ~ CLOSE TANK & REMOVE ~ REPAIR PIPING ,~S OISO,A,e~ ,E~N STOPPED * : REPAIR TANK : CLOSE TANK, FILL IN P~CE ~ CHANGE PR~EDURE ~ YES ~ NO IF YIn, DA~ ~I t ~ ~ Y ~ REP~CE TANK ~ OTHER SOURCE OF DI~HARGE CAUSE(S) ~ ~ TANK~AK ~ UNKNOWN ~ OVERFILL ~ RUPmR~AILURE ~ SPILL ~ ~ 'PIPING [DK ~' OT,E, ~ mRROSION ¢~ UNKNOWN ~ CT,ER ~ CHECK ONE ONLY ~ UNDERMINED ~ SO!L ONLY ~ GROUNDWATER ~ DRINKING WATER - (CHECK ONLY IF WATER WELLS HA~ ACtuALLY BEEN AFFEC~D) CHECK ONE ONLY ~ ~ NO ACTION TA~N ~ PR~IMINARY Sl~ ASSESSMENT ~RKP~N SUBMI~ED ~ POLLUTION CHARACTERI~TION ~ ~ LE~BEING~NFIRMED ~ PRELIMINARYSI~A~E~MENTUNDERWAY ~ POST CLE~UP MONITORING IN PROGRE~ ~ REMEDIATION P~N ~ CASE CLOSED (CLE~UP ~MPLE~D OR UNNECE~AR~ ~. CLE~UP uNDERwAY CHECKAPPROPRIATEACTION(S) ~ EXCAVA~&DIS~SE(ED) ~ REMOVE FREE PRODUCT (FP) ~ ENH~CEDBIODEGRADATION(I~ ~ ~ CAPSI~(CD) ~ EXCAVATE&TREAT(E~ ~ PUMP&TREATGROUNDWA~R(G~ REP~CE SUPPLY (RS) ~ ~ CONTAINMENT BARRIER (CB) ~ NO ACT~N REQUIRED (NA) ~ TREA~ENT AT H~P (MU) ~ VENT ~IL < ~' VACUUM EXTRACT~' ~ OTHER (O~ G J L Environmental Gary J. ~ear~, ~t.g.~. Environmental Consultant 4009 FAIRWOOD ST. BAKERSFIELD, CA 93306-1310 (805) 872-1543 July 20, 1994 RECEIVED /~AZ. ~4r. DIV. BAKERSFIELD CITY FIRE DEPARTMENT Hazardous Material Division 2130 'G" Street Bakersfield, California 93301 Re~ 601 Eureka Street, Bakersfield, California Property Owners: John M. and Deanna J. McCauley Subject: Second Quarter Status Report for 1994 GJL ENVIRONMENTAL~ Gary J. Leary, R.E.A. Status of Investigation and Cleanup Activities lncludinu the Results of All Investigations Implemented to Date 1. Vapor extraction system design and air pollution permit work. On January 17 and 18, 1994, six vapor extraction wells were drilled and installed. A vapor extraction test was conducted on January 26, 1994, to determine site- specific. Parameters for use in the evaluation and designing the vapor extraction system. The consulting firm ofHolguin, Fahan & Associates has written the Corrective Action Plan. The Bakersfield City Fire Department the lead agency has approved the Corrective Action Plan. "Exhibit 1" On March 8, 1993 an Expanded Site Characterization was undertaken. On March 19 - 20, 1992, a site characterization was performed to define the vertical and horizontal extent of the contamination plume. No cleanup activities have been implemented.  exV~hase of Investigation Remediation will begin. The authority to construct should be issued this quarter from San Joaquin Valley Unified Air Pollution Control District. Then the vapor extraction unit will be installed and remediation will begin. Drilling of Vapor Extraction Wells is scheduled to commence ~'~Jan/uary 17, 19~4. ~ The environmental consulting firm has been selected, it is Holguin, Fahan & Associates. The Corrective Action Plan will be written and work should begin before the end of 1993. On August 13, 1993, an Invitation for Bids was issued to four (4) environmental consulting firms, to supplement and implement a Corrective Action Plan. If the Bakersfield City Fire Department the lead agency in this project agrees with PIWAREA ENGINEERING, INC. Findings from the Expanded Site Characterization. An Invitation for Bids will be issued this quarter, to install the Vapor Extract Wells and treatment unit. On November 16, 1992, the Bakersfield City Fire Department, the lead agency, issued a letter which agreed with site assessment recommendation from John R. Wilson and Associates. An Invitation for Bids was issued on December 23, 1992, to four (4) environmental consulting firms. Method of Cleanup Proposed or Implemented to Date The cleanup method proposed is a vapor extraction unit. This was acceptable to the Bakersfield City Fire Department. Time Schedules for the Completion of the Investigation of the Site and Remediation A time schedule will be included as part of the Corrective Action Plan. Method and Location of Disposal of the Released Hazardous Substance and any Contaminated Soil, Ground Water or Surface Water None has been chosen at this time. Manifest Required for Transport of Hazardous Substances No material was manifest off site this quarter. Monitoring Well Data Including Ground Water Elevation, pH, Conductivity_, Temperature and Gradient No monitoring wells have been installed at this time. Tabulated Analytical Results of Ground Water or Soil Sampling None in this Quarter. A Site Map Showing the "Zero Line" of Contamination if Known, and Changes in Analyses and Gradient Measurements Over the Last Quarter None in the Fourth Quarter. Tabulated Data for all Monitorine Wells Including Ground Water Elevations Collected to Date No monitoring wells have been installed at this time. A Site Map Delineating Ground Water Elevation Contours Based on Recent Data; if the Site is in Remediation~ Define the Zone of Capture for any Extraction Well(s) on the Contour Map Does not apply at this time. Tabulated Analytical Results from all Previous Sampling Events Including Laboratory Reports for the Most Recent Sampling Event and Chain of Custody Documentation This can be found in the Third Quarter Report. Site Map Delineating Contamination Contours for Soil and Ground Water Based on Recent Data The site map delineating contamination contours for soil. This map was in the Second Quarter Report of' 1993. The Quantity of Ground Water~ Vapors~ and Hydrocarbons Removed (in Gals., cu. ft., and lbs., Respectively), During the Reporting Period and Cumulative to Date Does not apply at this time. Times and Dates Equipment Was Not Operating. Cause of Shutdown~ and a Corrective Action Plan to Insure Similar Shutdowns do not Reoccur (Proposed Corrective Actions are to be Completed Within 30 Days of the System Shutdown) DOes not apply at this time. Estimates of the Quantity of Contamination RemaininR in Soil and Ground Water~ and Time for Completing Remediation Does not apply at this time. Sincerely, GJL ENVIRONMENTAL Gary J. Leafy, R.E.A. HOLGUIN, FAHAN & ASSKET , INC. ENVIRONMENTAL 143 South Figueroa Street · Ventura, California 93001 853 West 17th Street · Costa Mesa, California 92627 3157 Pegasus Drive · Bakersfield, California 93308 June 6, 1994 MANAGEMENT CONSULTANTS (805) 652-0219 · FAX (805) 652-0793 (714) 642-2660 · FAX (714) 642-2544 (805) 391-0517 · FAX (805) 391-0826 ~,,~nce Ericksen San Jo-'be~ Valley Unified Air Pollution Control District Southern 2700 "M" Street, Su-~ite,~5 Bakersfield, California 9338,1,, Subject: APPLICATION FOR AUTHORITY TO CONSTRUCT PERMIT FOR THE FORMER CALIFORNIA SHEET METAL FACILITY, 601 EUREKA STREET BAKERSFIELD, CALIFORNIA (APN 016-290-01-00-3) Dear Mr. Edcksen, Holguin, Fahan & Associates, Inc., (HFA) is submifting this Authority to Construct (ATC) application for a vapor extraction system (VES) using an Emission Control Systems, Inc., 250 standard cubic feet per minute, direct-fired thermal oxidation unit for the destruction of vapors extracted from gasoline-containing soils resulting from a leaking underground storage tank (UST). The system will be operated at the former California Sheet Metal facility located at 601 Eureka Street, Bakersfield, California (see Figure 1 - Site Location Map). The projected duration for remedlation of the site is 12 months. The maximum anticipated emissions of total hydrocarbons per day from this equipment is 6.2 pounds if the equipment obtains only a 99-percent destruction efficiency when the influent concentration Is limited to 50 percent of the LEL (6,500 pads per million by volume). HFA anticipates that an efficiency of greater than 99.5 percent will be obtained by the proposed system and the likely emission of total hydrocarbons will be 3.1 pounds per day. A vapor extraction test conducted at the site indicated that benzene constitutes approximately 1 percent of the total volatile organic compounds process stream. Therefore, anticipated benzene emissions will be limited to 0.048 pound per day in the worst case (99-percent scenario), or 0.024 pound per day in the likely case (99.5-percent scenario). ENVIRONMENTAL PLANNERS * SCIENTISTS · GEOLOGISTS ANO ENGINEERS Conlanlinated Sil¢- Assessn~enls * Real Estate Audits * Sit(' Retnediation * llazardousWasteManagemenl [HOLGUIN, FAHAN & ASSOCIATe, INC. ENVIRONMENTAL~ MANAGEMENT CONSULTANTS Mr. Lance Erlcksen SJVUAPCD-SZ June 6, 1994 - Page 2 HFA requests that this ATC application be processed through the "Fast Track" system. This request Is being made because the presence of gasoline hydrocarbons ih the soil may present a threat of leaching to groundwater. The following Items are enclosed for the subject application: · Best Available Control Technology discussion; · California Air Pollution Control Officer's Association screening analysis; · VES Equipment Drawing; · VES Process Diagram; · completed ATC permit application; · copy of the vapor extraction test report submitted to the City of. Bakersfield Fire Department Hazardous Materials DMslon UST Local Oversight Program (BFDHMD UST LOP); and · check in the amount of $60. Holguln, Fahan & Associates, Inc., appreciates your consideration In this matter. If you have any questions please contact the undersigned at (805) 891-11517 at your convenience. Respectfully submitted, Mark Magargeeo'E.G." Senior Hydrogeologist Holguino Fahan & Associates, Inc. MRM:kad Enclosures cc: John M. McCauleyo California Sheet Metal v/Ralph Huey, BFDHMD UST LOP HOLGUIN, FAHAN & ASSCK IATES, INC. ~ ENVIRONMENTAL MANAGEMENT CONSULTANTS 143 South Figueroa Street · Ventura, California 93001 (805) 652-0219 · FAX (805) 652-0793 853 West 17th Street · Costa Mesa, California 92627 (714) 642-2660 · FAX (714) 642-2544 3157 Pegasus Drive · Bakersfield, California 93308 (805) 391-0517 · FAX (805) 391-0826 1.0 LIST A - GENERAL APPLICATIONS The following Information Is provided to meet the provisions of the general application. Business Information: See Application A. Estimated construction date/estimated completion date: August 1, 1994/July 31, 1995. II. Type of Application: A. AuthOrity to Construct: 1. New Equipment B. Permit to Operate: N/A C Banking Cedificate: N/A III. Description of Facility A. Location 1. Street address of facility and location as described by quarter section, township, and range (see Figure 1). 2. Scaled and dimensioned plot plan of site showing and identifying the locations of: a. Public and private streets (see Figure 1). b. Properly lines (see Figure 1). c. Existing and proposed buildings (see Figure 1). d. Adjacent property owners and uses. North: Commercial; South: Commercial; East: Commercial; and West: Commercial. e. Storage areas for fuel, materials, and products. Underground fuel storage tanks at the site have been previously abandoned. Extracted gasoline vapor, supplemental natural gas, and electricity will be the power source for the vapor extraction unit. f. Basic, control, and air monitoring equipment (see attached YES Equipment Drawing and YES Process Diagram). g. Piping and ducts for carrying fuels, products, and materials that are possible sources of air pollutants (see aflached VES Equipment Drawing and VES Process Diagram). h. All emission points, Single Source Emlssion from stack of mobile vapor extraction system (VES) (see VES Process Diagram). B. General purpose of facility: See Vapor Extraction Test Repod, Section 1, Introduction ENVIRONMENTAL PLANNERS · SCIENTISTS · GEOLOGISTS AND ENGINEERS Contaminated SiI¢~ Assesslnents * Real E$1ale Audits * Sil(' Rell~ed|atiofl * Ilazardous Waste Maflagefllefll HOLC~UIN, FAHAN & ASSOCIATES, INC. EN¥~ONb~ENTI~ M~NAGEMENT CONSULTANTS California Sheet Metal Bakersfield, California June 6, 1994 - Page 2 IV. Description of Process: See attached VES Process Diagram and Section :~.0~ V. Expected Emissions: See attached VES Process Diagram and Section 5.0 VI. Fuel Burning Equipment and Fuel: See attached VES Process Diagram and Section 2.0 2.0 DESCRIPTION OF PROCES~ 2.1 GENERAL DESCRIPTION 2.1.1 System Overview: Refer to Drawings #ECS-FMEC and ~D1-01 for system configuration and Figure 1 and enclosed VES Equipment .Drawing and VES Process Diagram for site location map, piping layout, and wellhead manifold configuration. The Emission Control Systems, Inc., 250 standard cubic feet per minute (scfm), direct-fired thermal oxidizer Is a trailer-mounted, thermal YES complete with an entrainment separator, auto-drain system, vacuum pump, direct-fired thermal oxidizer, and an IRI fuel train. The process stream shall enter the VES through a 0-Inch flange mounted directly to the entrainment separator. The entrainment separator .will remove a minimum of 90 percent of the entrained liquid contained within the process stream. Upon exiting the entrainment separator via a 6-Inch flange, the process stream Is compressed Into a positive pressure of 20 Inches of water. Upon exiting the vacuum pump, volumetric flow rate and volatile organic compounds (VOCs) concentrations are constantly monitored In the process stream. These parameters are continuously displayed on the strlpchart recorder visible through a window In the door of the electflcol panel. A pressure switch monitors the process stream and will shut the VES down If preset high and Iow levels are exceeded. The YES unit is designed to treat up to 70 percent'of the lower explosion limit (LED of gasoline vapor in air. If at any time during normal operation the Incoming VOC concentrations exceed the preset level, as detected by Instrumentation, dilution air will be added to the Incoming process stream. A state of prolonged and/or excessive high VOC concentrations will cause the VES to enter the shutdown mode. HOLGUIN, FAHAN ASSOCIATES, INC. ENVIRONMENTAL MANAGEMENT CONSULTANTS California Sheet Metal Bakersfield, California June 6, 1994 - Page 3 2.2 After passing the aforementioned Instrumentation, the process s. tr.eam enters the oxidizer. The oxidizer Is a dual chamber, open flame thermal oxidizer. The VOCs are heated to 1XI50oF and are oxidized to carbon dioxide and water. Residence time is 1 second. The oxidizer is designed to destroy a minimum of 99 percent or better of the Incoming VOCs contained within the process stream over the operating range of the VES. The oxidizer is lined with 5 inches of a ceramic fiber refactory material. The refractory material provides enough insulation to maintain the surface temperature of the oxidizer at safe levels. The process stream exits the oxidizer via a 10-foot-high, 6-Inch-diameter exhaust stack. The inlet vapor concentrations to the thermal oxidation unit are continuously monitored using a LEL monitor, and the outlet emission concentrations from the unit are periodically monitored using a photoionizatlon detector, UNIT DESCRIPTION 2.2.1 ~ The VES unit Is skid mounted. The dimensions of the unit is 10 feet long by 5 feet wide. 2.2.2 ~: The vacuum pump will extract the air/VOC process stream from properly designed extraction wells. At 250 scfm, the vacuum pump will generate a vacuum of approximately 6 Inches of mercury (6-Inch Hg). The vacuum pump will generate a discharge pressure sufficient to force the air/VOC process stream through the oxidizer and out the exhaust stack. Vacuum Pump, Technical Specifications Process Connection 4 Inches Materials of Construction, Lobes Cast Iron Materials of Construction, Casing Motor Horsepower (hp) Motor Voltage Motor Phase Maximum Amperage Cast Iron lOhp 240 VAC 3 phase 56.6 amps 2.2.3 Entrainment Seogrator: The entrainment separator will be placed upstream of the vacuum pump and will remove up to 90 percent of the entrained liquid contained in the process stream. The entrainment separator consists of a "tube within a tube" and has an integral auto-drain subsystem. HOLGUIN, FAHAN & ~IATES, INC. ENVIRONMENTAL MANAGEMENT CONSULTANTS California Sheet Metal Bakersfield, California June 6, 1994- Page 4 Entrainment Separator, Technical Specifications Process Connection Size 6-Inch flanged Materials of Construction $/16-1nch carbon steel 2.2.4 ~ After the vacuum pump, the process stream is forced into and through the oxidizer. The cylindrical oxidizer consists of two sections. The first section is the mixing chamber and the second section Is the combustion chamber. The mixing chamber consists of the combustion burner and the ceramic throat. As the process stream passes through the throat, the VOCs and air are thoroughly mixed and ignited. The combustion zone provides the retention time necessary to combust the VOCs. The oxidizer Is lined with 5 Inches of ceramic fiber refractory material. The refractory material provides enough Insulation to malntaln the surface temperature of the oxidizer at safe levels. An exhaust stack is provided with the VES. The standard height is 10 feet. Oxidizer, Technical S Materials of Construction, Shell Materials of Construction, Insulation Process Connection Nominal Temperature Range Maximum Temperature Rating Minimum VOC Conversion Supplemental Fuel )eclfications Carbon steel Ceramic fiber 6-Inch flange 1AS0°F 99 percent Propane or Natural Gas HOLGUIN, FAHAN & ASSOCIATES, INC. ENVIRONMENTAL MANAGEMENT CONSULTANTS California Sheet Metal Bakersfield, California June 6, 1994- Page 5 Oxidizer Fuel Consumption, Technical Specifications VOC Concentration (ppmv) Fuel Consumption in Btu/hr 759L]00 1,C00 682JlK] 1,500 615,CK]0 2,1I]0 550.00[] 2,500 450.C~0 3.[I]0 378.000 3,500 325Ll]0 ppmv = Parts per million by volume. 2.2.5 Flame Arrestor: One flame arrestor is placed between the vacuum pump and the oxidizer. Flame Arrestor, Technical Specifications Prix:ess Connection 4-inch flan~ed Materials of Construction Aluminum Wetted Parts Aluminum 2.3 VALVING The VES has one three-way valve. The three-way valve controls the flow of ambient air into the VES as a function of VOC content In the process stream. A two-position, electrically actuated butterfly valve Isolates the VES from the extraction wells. This valve is in the closed position when the oxidizer is below or above the normal operating temperature of the oxidizer. A 10-position butterfly valve will be placed on the vacuum side of the vacuum pump and will Provide manual adjustment of the incoming process stream. Additional process valving Includes a manual drain valve for the entrainment separator, and two stainless steel ball valves used in the sample ports. Additional fuel train valving includes a gas cock, an automatic main gas shutoff valve, and a modulating butterfly valve, which controls the flow of supplemental fuel to the oxidizer as a function of stack temperature. HOLGUIN, FAFtAN & ~IATES, INC. ENVIRONMENTAL MANAGEMENT CONSULTANTS California Sheet Metal Bakersfield, California June 6, 1994 - Page 6 2.3.1 Automatic Dilution Valve: The automatic dilution valve reg.ul.ates the flow of ambient air into the YES as a function of VOC content in the process stream. Automatic Dilution Valve, Technical Specifications Materials of Construction, Seat j Butyl N Materials of Construction, Body J Forged steel Size 4 Inches 2.3.2 Suoolemental Fuel Control Valve: The supplemental fuel control valve is a l-Inch, reduced pod, butterfly valve that regulates the flow of supplemental fuel into the VES as a function of stack temperature. Supplemental Fuel Control Valve, Technical Specifications Materials of Construction, Seat Beveled disc Materials of Construction, Body Carbon steel Size linch 2.3.3 Manual Dilution Valve: The Manual dilution valve is a 10-position, 4-inch butterfly valve used to regulate the flow parameters. This valve is placed on the vacuum side of the YES. Manual Dilution Valve, Technical Specifications Materials of Construction, Seat ~ Butyl N Materials of Construction, Body I Forged steel Size 4 inches Number of positions 10 2.3.4 ~ Each of the two sample pods will contain one stainless steel ball valve. Sample Pods, Technical Specifications Materials of Conslruction, Seat Stainless steel Materials of Construction, Body Stainless steel Size 1/4 Inch HOLGUIN, FAHAN & ~IATES, INC. ENVIRONMENTAL MANAGEMENT CONSULTANTS California Sheet Metal Bakersfield, California June 6, 1994 - Page 7 2.3.5 Manual Entrainment SeDarcrtor Drain Valve: A l-inch ball valve.w, lll be supplied in the auto-drain subsystem This valve will provide a manual drain capability. Manual Entrainment Separator Drain Valve, Technical Specifications Materials of Construction, Seat Bronze Materials of Construction, Body Size Bronze linch 2.3.6 Gas Cock: A gas cock allows manual shutdown of the supplemental fuel supply. Gas Cock, Technical Specifications Materials of Construction, Seat Iron Materials of Construction, Body Iron Size 1 Inch 2.3.7 Automatic Main Gas Shut-Off V~llye: The automatic main gas shut-off valve Is a motorized valve that will shut off the supplemental fuel supply as a resuff of selected alarm conditions. Automatic Main Gas Shut-Off Valve, Technical Specifications Materials of Construction, Seat [Iron Materials of Construction, Body Iron Size 1 Inch Reaction Time 3/10 second 2.3.8 J~ The isolation valve is a two-position valve that will close as a result of an alarm condition. Closure of this valve will Isolate the VES from the extraction wells, preventing VOC-laden air from entering the oxidizer. Isolation Valve, Technical Specifications Materials of Construction, Seat Butyl N Materials of Construction, Body Size Forged steel 6 Inches HOLGUIN, FAHAN & ASSOCIATES, INC. ENVIRONMENTAL MANAGEMENT CONSULTANTS California Sheet Metal Bakersfield, California June 6, 1994 - Page 8 2.3.9 Flame Safety Device: The flame safety device controls the ignitiq)n of the burner. Should the pilot light not Ignite, the flame safety device will cause the VES to enter the shutdown mode. Flame Safety Device, Technical Specifications Voltage Requirements J 110 VAC Phase J Single Amp Rating <1 2.4.0 StriDchart Recorder: The stripchart recorder Is placed Inside of the electrical enclosure. Personnel access to the recorder is via a window Installed In the door of the electrical enclosure. The recorder has an Integral LED display. The stripchart recorder can accept up to six Inputs. The VES will have the following stripchart recorder configuration. Strlpchart Recorder Inputs Channel 1 Oxidizer temperature Channel 2 Flow Rate Channel 3 Process LEL Channel4 Process O2 Channel 5 OPEN · Channel 6 OPEN Strlpchart Recorder, Technical Specifications ' ,~,vallable Inputs 6 Scan Cycle 5s/6 points Dot Matrix Printer Type Voltage Requirements Phase Amp Rating 110 VAC Single <1 2.4.1 J. EJ.~J~1J.~2~ The LEL monitor detects the VOC concentration In the process stream. Should the VOC concentration exceed the preset level, dilution air will purge the VES, lowering the VOC concentration. HOLGUIN, FAHAN &/L~93~TE~, INC. ENVIRONMENTAL MANAGEMENT CONSULTANTS California Sheet Metal Bakersfield, California June 6, 1994 - Page 9 LEL Monitor, Technical Specifications Range Wetted Pods Output 4-20 mADC 24VDC Voltage Requirements Phase Amp Rating 0-100 percent LEL Carbon steel Single <1 2.4.2 Flow Measurement Device: Flow is measured utilizing two devices. The primary device is placed in the flow and generates a differential pressure as a function of volumetric flow rate. The differential pressure is read and electronically transmitted to the stripchad recorder. Flow Measurement Devices, Technical Specifications Range 0-2,,5[X] scfm Wetted Pads Carbon steel Output 4-20 mADC Voltage Requirements Phase Amp Ratln~ Single <1 2.4.3 Static Pressure Switch. Process: The static pressure device will monitor the process for static pressures that exceed preset high and Iow set points. Static Pressure Switch, Process, Technical Specifications Range N/A Wetted Pads Carbon steel Output 2 contact closures 110 VAC Voltage Requirements Phase Amp Rating Single <1 HOLGUIN, FAHAN & ASSOCIATES. INC. ENVIRONMENTAL MANAGEMENT CONSULTANTS California Sheet Metal Bakersfield, California June 6, 1994 - Page 10 2.4.4 Static Pressure Switch. Supplemental Fuel: A pressure switch will shut the VES down should the static pressure of the supplemental fuel exceed preset high and Iow set points. Static Pressure Switch, Supplemental Fuel, Technical Specifications Range N/A Welled Parts Carbon steel Output 2 contact closures Voltage Requirements 110 VAC Phase Single Amp Rating <1 2.4.5 Level Switches: Two float-type level switches will control the auto-drain pump and will shut the VES down should the entrained liquid level exceed a preset high level. Level Switch, Technical Specifications 'Range N/A Wetted Parts Carbon steel. )utput 1 contact closure 110 VAC Voltage Requirements Phase Amp Rating Single <1 2.4.6 Oxygen Sensor: The oxygen sensor will transmit an electrical signal to the ambient air controller. Oxygen content shall be maintained above 18 percent to Insure complete combustion. Oxygen Sensor, Technical Specifications Range Wetted Pads 0-25 percent 02 Carbon steel Output 4-20 mADC Voltage Requirements 24VDC Phase Amp Rating Single <1 HOLGUIN, FAHAN & A,__qS(X21ATES, INC. ENVIRONMENTAL MANAGEMENT CONSULTANTS California Sheet Metal Bakersfield, California June 6, 1994 - Page 11 2.5 PROCESS ALARMS The following alarms are provided with the VES: 1. Low oxidizer temperature 2. High oxidizer temperature 3. High VOC concentration 4. Low oxygen concentration. 5. Low and high supplemental fuel pressure 6. Low and high process flow 7. Flame out condition 2.6 ELECTRICAL SPECIFICATIONS 2.6.1 Utility Reaulrements: The 250 scfm VES requires one "Y" 208 VAC, 3-phase, 100-amp power connection from a local panel or utility pole. 3.0 DESCRIPTION OF EQUIPMENT 3.1 OXIDIZER Manufacturer: Model: Size: Type: Fuel Consumption: Emission Control Systems, Inc. 2291 250 scfm Direct-fired thermal 3.25 MBTU 3.2 VACUUM PUMP Manufacturer: Sutorbilt, Inc. Model: 5M Size: 250 scfm Type: Positive displacement Total KW: 7.45 Horsepower: 10 3.2 ENTRAINMENT SEPARATOR Manufacturer: Emission Control Systems, Inc. Model: ES-250 Size: 28 gallon Type: Tube-in-Tube HOLGUIN, FAHAN & ~IATES, INC. ENVIRONMENTAL MANAGEMENT CONSULTANTS California Sheet Metal Bakersfield, California June 6, 1994 - Page 12 3.2 SILENCER Manufacturer: Universal Silencer Model: UVS-5 Size: 4 inches Type: Discharge TOTAL KW INVENTORY = 10 TOTAL HORSEPOWER INVENTORY = 7.45 MAXIMUM NATURAL GAS CONSUMPTION = 1,518,000 Btu/hour or 36,432,000 Btu/day 4.0 OPERATION SCHEDULE: The system Is designed for continuous operation, 24 hours a day, 7 'days per week, until the site contamination is remediated. The anticipated project duration Is 12 months from the beginning of the remediation. 5.0 EXPECTED EMISSIONS: Based on the site assessment and soil vapor extraction test data and the professional experience of HFA, the estimated Initial hydrocarbon concentration in the process stream could be in excess of 10,[X]0 parts per million by volume (ppmv) measured as gasoline since this Is the highest concentration detected In the soil vapor samples collected during the vapor extraction test. HFA anticipates that concentrations approaching thIs Initial concentration will only be observed during the Initial few days of the vapor extraction process, and that an exponential decay curve will ensue. Natural gas will then supplement the soil vapors to maintain the optimum 1,450°F operating temperature. However, HFA will limit the Inlet concentration to the manufacturer recommended 50 percent of the I. EL (6,500 ppmv), and has based the following discussion of VOC and benzene emissions, as well as the health risk assessment contained in Section 7.0, on the emissions for an Inlet concentration limited to 50 percent of the I.EL. -. The Inlet oir/VOC process stream will be controlled through operation of the automatic dilution valve so that a maximum allowable concentration of approximately 6,,500 ppmv, or 50 percent of the LEL, Is permitted to enter the oxidizer. If at any time during normal operation the Incoming VOC concentration exceeds the preset level, as detected by the Instrumentation, dilution air will be added to the Incoming process stream. The oxidizer Is designed to destroy a minimum of 99 percent or more of the VOCs in the process stream entering the system. The current experience of the manufacturer Is that the latest generation units have been source tested at greater than 99.5 percent destruction efficiency, which has been further verified by dally HOLGUIN, FAHAN & ASSOCIATES, INC. ENVIRONMENTAL MANAGEMENT CONSULTANTS California Sheet Metal Bakersfield, California June 6, 1994 - Page 13 monitoring of the stack emission. Emission estimates contained In this permff ~vlll be provided for both 99 percent as a worst-case scenario, and 99.5 percent as the likely destruction efficiency. The preset level will be set so that the system's hydrocarbon emissions shall be limited to 0.26 lb/hr and 6.2 lbs/day in the worst case (99-percent scenario), or 0.13 lb/hr and 3.1 lbs/day In the likely 99.5-percent scenario. The vapor extraction test Indicates that benzene emission is approximately 1 percent of the total VOC emission. Therefore, anticipated benzene emissions will be limited to 0.0019 lb/hr and 0.048 lb/day In the worse case (99-percent scenario), or 0.0010 lb/hr and 0.024 lb/day In the likely 99.5-percent scenario. A "Screening Level Risk Assessment" using the California Air Pollution Control Officers Association (CAPCOA) "Air Toxics Assessment Manual" PTPLU modeling technique is presented In Section 7.0 and is based upon a worst-case scenario of the benzene concentrations representing 1 percent of a 6,500 ppmv VOC Inlet stream throughout the 12-month duration of the project. This is an overly conservative approach, but this approach does demonstrate the minimal health risk associated with the operation of the unit. To confirm that the emissions do not exceed the proposed limits, HFA will conduct a Source Test that will consist of collecting vapor samples from the Inlet and outlet of the unit and analyzing the samples for TPH as gasoline and benzene, toluene, ethylbenzene, and total xylenes (BTE)0. Given a throughput of 250 scfm and 99 percent destruction of the 6,500 ppmv influent stream, the predicted concentration for total hydrocarbon emissions is 65 ppmv. Given a throughput of 250 scfm and 99.5-percent destruction of the 6,50[] ppmv influent stream, the predicted concentration for total hydrocarbon emission is 32.5 ppmv. Upon analytical verification of this emission concentration and receipt of the Permit to Operate' from the San Joaquin Valley Unified Air Pollution Control District - Southern Zone, HFA proposes to monitor the operating effluent stack emission using a photolonization detector on a dally basis for the first 2 weeks, and on a weekly basis thereafter for the duration of the project. HFA will also collect Inlet and outlet vapor samples on a monthly basis for analysis of TPH as gasoline and BTEX. '. 6.0 BEST AVAILABLE CONTROL TECHNOLOGY (BACTI Direct-fired thermal oxidation is the BACT to Implement on the vapor extraction project located at the California Sheet Metal site. By comparing four different remedial technologies, it is demonstrated that the direct-fired thermal oxidation process Is the safest and most efficient technology available for thls application: HOLGUIN, FAHAN & ASSOCIATES, INC. ENVIRONMENTAL MANAGEMENT CONSULTANTS California Sheet Metal Bakersfield, California June 6, 1994 - Page 14 6.1 6.2 6.3 6.4 Catalytic Conveder Efficiency = 90 to 99 percent Combustion Temperature = 700 to 900°F Incomplete combustion, and highly sensitive to the destroying the catalyst. contaminants in the air stream Internal Combustion Efficiency = 95 to 99 percent Combustion Temperature = 2,000 to 2,5[]00F Efficient combustion, but requires extensive supplemental propane fuel, careful control of operating parameters, and maintenance of combustion temperature In an optimum range to obtain efficiency. Carbon Adsorption Efficiency = 99 to 99.5 percent Carbon canisters operate on a standard decay curve. When saturation concentrations are reached, breakthrough occurs. However, with two carbon packs In series, the risk of an emission greater than 1 percent is Iow. Difficulties have been observed when the temperature and concentration within the carbon canisters approaches the LEL and results in the spontaneous combustion of the canister.,. :..Because of the volume of gasoline In the subsurface at the California Sheet Metal site, numerous canisters will reach saturation, and the risk of spontaneous combustion will be repeated on a weekly and even daily basis at the Initiation of treatment. Thermal Oxidation Efficiency = 99 to 99.7 percent Combustion Temperature = 1,4,50°F Precisely controlled system that automatically maintains the appropriate Inlet concentrations and oxidation temperatures to assure compliance with preset hourly and dally hydrocarbon emission requirements. Because of the volume of gasoline hydrocarbons present in the subsurface at the California Sheet Metal site, direct-fired thermal oxidation presents the most stable, predictive, and cost-effective method for destroying the extracted VOCs. HOLGUIN, FAI IAN & ASSOC~T~, INC. ENVIRONMENTAL MANAGEMENT CONSULTANTS California Sheet Metal Bakersfield, California June 6, 1994 - Page 15 7.0 HEALTH RISK ASSESSMENT .~ The following Is a "Screening Level Risk Assessment" using the CAPCOA "Air Toxlcs Assessment Manual' PTPLU modeling technique. The calculations for excess lifetime cancer risk have been performed for benzene emissions for both the 99-percent and 99.5-percent oxidation efficiency scenarios. The data analysis is based upon the unit operating at 6,5(30 ppmv (50 percent of LEL) for the entire 12-month duration of the vapor extraction process, with benzene representing 1 percent of the process stream, toluene 5 percent, ethylbenzene 0.5 percent, and total xylenes 25 percent. Actual emission of the volatile aromatics will decay exponentially during the project and represent a significantly lower risk than presented b~ this analysis. Despite this, the results of the worst-case analysls Indicate that the vapor extraction project does not present a public health risk, and are as follows: Type Calculation: PTPLU Benzene Concentration-99 percent Benzene Concentration-99.5 percent Rr Re Rr Re 3.7'10-7 ,5.0'10-8 1.7'10-7 2.5'10-8 HEALTH RISK ASSESSMENT WORKSHEET Initial Soil Vaoor Inlet Stream Concentrations TPH as Gasoline = 6,500 ppmv Benzene = 65 ppmv Toluene = 325 ppmv Ethylbenzene = 32.5 ppmv Total Xylenes = 1,625ppmv Air Flow Blower Rate Blower Rate = 250 scfm = (5250 cu fi/rain)*(60 rain/h0*(24 hr/day) = 360,000 cu fi/day Total Hydrocarbons Emlssiorl (360,000 cu ft/day)/(379.4 cu fi/lbs-mole) = 949 lbs-mole/day (949 lbs-mole/day)*(6,500 ppmv) = 6.16 lbs-mole/day Molecular Weight of Gasoline = 100 lbs/lbs-mole (6.16 lbs-mole/day)"(100 lbs/lbs-mole) = 616 lbs/day Thermal Oxidation Efficiency = 99 percent (616 lbs/day)*(.01) = 6.16 lbs/day Thermal Oxidation Efficiency = 99.5 percent (616 tbs/day)" (.005) = 3.08 lbs/day HOLGUIN, FAHAN & ASSOCIATES, INC. ENVIRONMENT,AL MANAGEMENT CONSULTANTS Californla Sheet Metal Bakersfield, California June 6. 1994 - Page 16 Benzene Emissioq (Based on maximum Initial concentration) (949 lbs-mole/day)*(65 ppmv) = 0.13616 lbs-mole/day Molecular Weight of Benzene = 78.1 lbs/lbs-mole (0.0616 lbs-mole/day)*(78.1 lbs/lbs-mole)= 4.81 lbs/day Thermal Oxidation Efficiency = 99 percent (4.81 lbs/day)"(.01) = 0.048 lbs/day Thermal Oxidation Efficiency = 99.5 percent (4.81 Ibs/day)*(.O05) = 0.024 lb/day Benzene Concentration Thermal Oxidation Efficiency = 99 percent (0.048 lbs/day)*(1 day/360~:X]O cu ft)*(454 grams/lbs)*(35.315 cu ft/cu meter) = 0.0021 g/m3 Thermal Oxidation Efficiency = 99.5 percent (0.024 lbs/day)*(1 day/360~]O0 cu fl)*(454 grams/lbs)*(35.315 cu fl/cu meter) = 0.0010 g/m3 Benzene Emission Rate Thermal Oxidation Efficiency = 99 percent (0.0021 grams/cu meter)/(35.315 cu fl/cu meter) = 0.000059 grams/cu ft (0.000059 grams/cu fi)*(4.2 cu fi/sec) = 0.[X]024 grams/sec Thermal Oxidation Efficiency = 99.5 percent (0.0010 grams/cu meter)/(35.315 cu fi/cu meter) = 0.000029 grams/cu ft (0.000029 grams/cu ft)*(4.2 cu fi/sec) = 0.00012 gram/sec PTPLU Parameter~ Benzene Emission Rate Thermal Oxidation Efficiency = 99 percent 0.048 lb/day 99.5 percent 0.024 lb/day HOLGUIN, FAHAN & ASSOCIATES, INC. ENVIRONMENTAL MANAGEMENT CONSULTANTS California Sheet Metal Bakersfield, California June 6, 1994 - Page 17 PTPLU (Version 2.0) Analysis of concentration as a function of stability and wind speed (California Air Resources Board Modeling Section version) California Sheet Metal dispersion model with a 99-percent destruction efficiency Source Conditions Emission rate = 0.048 lb/day = 0.00024 g/sec Physical stack height = 10.00 fl = 3.05 m Stack gas temperature = 1,200.00°F = 922.04°K Stack gas velocity = 66.72 fi/sec = 20.33 m/sec Stack diameter = 6.00 in = 0.15 m Volume flow rate = 0.359 m^3/sec Buoyancy flux = 0.757 mA4/sec^3 Meteorological Conditions Ambient temperature = 300.00°K Anemometer height = 10.00 m Mixing height = 100.00 m' Wind profile exponents: A: 0.15, B: 0.15, C: 0.20, D: 0.25, E: 0.30, F: 0.30 Receptor data Receptor elevation above ground level = 1.00 m Options used Gradual plume rise Buoyancy Induced dispersion Urban dispersion coefficients (McEIroy-PooleO Results - using exlrapolated winds HOLGUIN, FAHAN & ASSOCIATe, INC. ENVIRONMENTAL MANAGEMENT CONSULTANTS California Sheet Metal Bakersfield, California June 6, 1994 - Page 18 Stability Wind Maximum Speed Concentration (m/sec) (ug/m^3) Distance of Max. (km) Effective Height (m) A A A A A A A 0.42 5.61569E-02 0.67 8.09283E-02 0.84 9.52141E-02 1.26 1.77135E-01 1.67 2.71347E-[]1 2.09 3.43610E-01 2.51 3.93634E-01 a116 ao77 o.o63 ao2o ao16 ao14 o. o13 44.6 29.0 23.8 11.9 8.8 7.3 6.4 B B B B B B B B B a42 5.61569E-02 0z~7 8.09283E-02 0.84 9.52141E-02 126 1.77135E-01 1Z>7 2.71347E-[]1 2.09 3.4361DE-01 2.51 3.93634E-01 3.35 4.45118E-01 4.18 4.58122E-01 a116 0.077 ao63 0.02o o.o16 ao14 ao13 0.011 aOlO 44.6 29.0 23.8 11.9 8.8 7.3 6.4 5.3 4.8 <-- MAX C C C C C C C C C 1.,58 2.15785E-01 a022 1.97 2.95462E-01 a019 2.37 3.58687E-01 a017 3.15 4.38514E-01 a015 3.94 9.9;x;;~]E+ 15 999999.63) 5.52 9.99gOOE+ 15 999999.000(3) 7.89 9.99<X]0E+ 15 ~77~9.~3) 9.46 9.99900E+ 15 999999.[Z~3) 11.83 9.99900E+ 15 9999~.~3) la5 8.5 7.3 6.0 3.4 3.3 3.2 3.2 3.2 D D D D D D a37 5.48211E-02 a59 8.12697 E-02 O.74 9.68215E-02 1.11 1.29610E-01 1.49 1.55344E-01 1.86 1.75616E-01 0.24O 0.154 a126 0.089 0.070 0.059 49.8 32.3 26.4 18.6 14.7 12.4 HOLGUIN, FAHAN & ASSOCIATES, INC. ENVIRONMENTAL MANAGEMENT CONSULTANTS California Sheet Metal Bakersfield, California June 6, 1994 - Page 19 D 2.23 1.77512E-01 0.040 10.8 D 2.97 2.68796E-01 0.025 7.4 D 3.72 3.18758E-01 0.022 6.2 D 5.20 3.62268E-01 0.019 5.1 D 7.43 3.62254E-01 0.016 4.3 D 8.92 3.47317E-01 0.016 4.1 D 11.15 3.20028E-01 0.015 3.9 D 14.86 2.76508E-01 0.014 3.6 E 1~10 3.60415E-02 0.250 27.4 E 1.75 3.30780E-02 0.233 25.7 E 2.10 3.08034E-02 0,220 24.4 E 2.80 8.19751E-02 0.056 10.8 E 3.50 1.15509E-01 0.049 8.7 F lA0 5.07131E-02 a209 23.3 F 1.75 4.63606E~ 0.195 21.8 F 2.10 4.30309E-02 0.185 20.7 F 2.80 8.19751E-02 0.056 10.8 F 3.50 1.15509E-01 0.049 8.7 Excess Lifetime Cancer Risk Thermal Oxidation Efficiency = 99 percent Rr = (Xl)&*(URi)*(L/70), where; UR = Unit Risk Factor = 5.3* 10-`5 (CAPCOA Manual Table 3.15) L/70 = Fraction of Lifetime Exposed = (12/12)/70 = (365 days) Xi = Annual Average Concentration = 0.458122 I~g/cu meter I~ = (0.458122)*(5.3' 10-$)*(0.014) = 3.7* 10-7 Re = (Rr)*(8 hrs/24 hrs)*(240 day/365 days)*(46 yrs/70 yrs) Re =5.0'10-8 HOLGUIN, FAHAN & ASSOC¼T~, INC. ENVIRONMENTAL MANAGEMENT CONSULTANTS California Sheet Metal Bakersfield, California June 6, 1994 - Page g3 California Sheet Metal dispersion model at 99.5-percent destruction Source Conditions emission rate = 0.024 lb/day = 0.00012 g/sec Stability Wind Maximum Distance Speed Concentration of Max. (m/sec) (ug/m^3) (km) Effective Height A 0.42 2.80784E-02 0.116 A 0.67 4.04641E-02 0.077 A 0.84 4.76071E-02 0.063 A 126 8.85674E-02 0.0L;K] A 1.67 1.35674E-01 0.016 A 2.09 1.718[]5E-01 0.014 A 2.51 1.96817E-01 0.013 44.6 29.0 23.8 11.9 8.8 7.3 6.4 B 0.42 2.80784E-02 D. 116 B 0.67 4.04641 E-02 0.077 B 0.84 4.76071E-02 0.063 B 1.26 8.85674E..02 0.020 B 1.67 1.35674E-01 0.016 B 2.09 1.71805E-01 0.014 B 2.51 1.96817E-01 0.013 B 3.35 2.22559E-01 0.011 B 4.18 2.29061E-01 0.010 C 1.58 1.07892E-01 0.022 C 1.97 1.47731E-(]I 0.019 C 2.37 1.79343E-01 0.017 C 3.15 2.19257E-01 0.015 C 3.94 9.999gC]E+ 15 999999.CK](X3) C 5.52 9.999C][~+ 15 999999.[Z]CK3) C 7.89 9.99900E+ 15 999:X~.OOCK3) C 9.46 9.99900E+ 15 999999.~3) C 11.83 9.99900E+ 15 999999.0[X~3) 44.6 29.0 23.8 11.9 8.8 7,3 6.4 5.3 4.8 10.5 8.5 7.3 6.0 3.4 3.3 3.2 3.2 3.2 <-- MAX HOLGUIN, FAFIAN & ASSOCIATES, INC. ENVIRONMENTAL MANAGEMENT CONSULTANTS California Sheet Metal Bakersfield, California June 6, 1994 - Page 21 D 0.37 2.74106E-02 0.240 49.8 D 0.59 4.06348E~ 0.154 32.3 D 0.74 4.84107E-02 0.126 26.4 D 1.11 6.48048E-02 0.089 18.6 D 1.49 7.76719E-02 0.070 14.7 D 1.86 8.78080E-02 0.059 12.4 D 2.23 8.87559E-02 0.040 10.8 D 2.97 1.34398E-01 0.025 7.4 D 3.72 1.59379E-01 0.022 6.2 D 5.20 1.81134E-01 0.019 5.1 D 7.43 1.81127E-01 0.016 4.3 D 8.92 1.736,.~E-01 0.016 4.1 D 11.15 1.60014E.-01 0.015 3.9 D 14.86 1.38254E-01 0.014 3.6 E 1.40 1.80207E-02 0.250 27.4 E 1.75 1.653eX]E-02 0.233 25.7 E 2.10 1.54017E-02 0.220 24.4 E 2.80 4.09875E-02 0.056 10.8 E 3.50 5.77547E-02 0.049 8.7 F 1.40 2.53566E-02 0.209 23.3 F 1.75 2.3180E-02 0.195 21.8 F 2.10 2.15154E-02 0.185 20.7 F 2.80 4.09875E-02 0.056 10.8 F 3.50 5.77547E-01 0.049 8.7 Thermal Oxidation Efficiency = 99.5 percent Rr = (Xi)&*(URi)*(L/70), where; URi = Unit Risk Factor = 5.3'10-5 (CAPCOA Manual Table 3.15) L/70 = Fraction of Lifetime Exposed = (12/12)/70 = (240 days) Xi = Annual Average Concentration = 0.229061 pg/cu meter Rr = (0.229061)*(5.3'10-5)*(0.014) = 1.7 x 10-7 Re = (Rg*(8 hrs/24 hrs)*(240 day/365 days)*(46 yrs/70 yrs) Re = 2.5.10-8 LEGEND ltI. VI?,ON {)AII~ O(:lO|ll'lt 15. 19,',y.! KJM JOHN II. AND DEANNA J. McCAULEY CALIFORNIA SHEET METAL 601 EUREKA STREET BAKERSFIELD. CALIFORNIA FIGURE 1- SITE LOCATION MAP HOLGUIN, FAHAN & ASSC~IATE8, INC. i: Sai JoaquM Valley Unified Air Pollution Control District APPLICATION FOR: [×] AUTHORITy TO CONSTRUCT (ATC) [ ] ATC MODIFICATION [ ] PERMIT TO OPERATE (PTO) 1. PERMIT TO BE ISSUED TO: HOl~uin, Fahan a Associates, Inc. .... 2. MAILING ADDRESS: m~m.o.~x: 3157 Pegasus Drive car,. ~ag~rgfield ' ~ CA ~pc~ 933'08 3. LOCATION WHERE THE EQUIPMENT WILL BE OPERATED: wrrHIN 1000 Fr. OF A SCItOOL? arm: 601 Eureka St. (Former Cal. Sheet Metal) [ ]YES [~NO cur:. Bakersfieldt California REQUESTCOMACONITYBANKOFFSETS? . [ ] YES [~ NO 4. GENERAL NATURE OF BUSINESS: Hardware Store 5. EQUIPMENT FOR WlllCH APPLICATION IS MADE (laclude Pen~t N~s. ~ known): Installation of a vapor extraction system using a 250 scfm, positive displacement blower and a direct-fired, thermal oxidizer. The system is designed for the in-situ extraction of gasoline vapors from soil impacted by a leaking gasoline underground storage tank. The direct- fired, thermal oxidizer has a destruction efficiency greater than 99 percent and is likely to be 99.5 percent, which will be verified through a source test. The duration of the project will be 12 months. 6. HAVE YOU EVER APPLIED FOR AN ATC OR FrO IN THE PAST~. [ ] YES [K] NO ATC/FrO No.: 7. IS THE PROPERTY ZONED PROPERLY FOR TI~ PROPOSED USE? ~ Y~S £~ ] NO 8. IS THIS APPLICATION SUBMITTED AS A RESULT OF AN NOV/NTC? [ ] YES IX] NO NOV/NTC No,:. 9, SIGNATURE OF APPLICANT: TYPE OR PRINT TITLE OF APPLICANT: 5~~~-~e-~ Senior Hydrogeologist-Office Manager 10. TYPE OR PRINT NAME OF APPLICANT: DATE: TELEPHONE NO: Mark R. Magargee 6-1-94 (805)391-0517 FOR APCD USE ONLY: DATE STAMP FILING FEE RECEIVED: DA'I'E PAID: I'ROJECI' NO.: Southern Re! ional Off,~:~'_ ' 27(K} M .t;~., .5uhr 275 * Bakersfield. California 93301 * (~:;05) 861-36,'37 * FAX (805) RESOURCE MANAOEM T AGENCY RANDALL L. ABBOTT DIRECTOR DAVID PI~ICI: A SSIS l ,~ld~l' DO~c lOR AIR POLLUTION CONTROL DISTRICT DETEP~INATiON OF C4I. IFO~14 EAq/IROAg~AT4/. QU4/.~TY4¢T (CEQ4) p~QUi~AT$ Certain projects requiring Air Pollution Control District (APCDJ approval are subject to the requirements of C£QA because discretionary decisions are Involved in the approval process. State la~ prohibits the Issuance of an Authority to Construct permit until CEQA requirements have been satisfied. modified stationary source sub "'" The following information must be submitted ~lth any application for a new or or $.B {LAER and ai,f ..... Ject to the requirements of Section $.A. (BACT) -,~otion} of Kern County APCO Rule 210.1. and/or a TOXic Air Contaminant Risk Assessment. Specific CEQA requirements ~lll be based on the applicant's responses to the following questions (Please provide copies of supporting docueents}: 1. Is the project subject to Section $.A (BACT)e or 5.B Y~ES N.~O (LAER and mitigation), or ~ill it result in an emission or inCrease in emissions of Toxic Air Contaminants? · BACT determinations for projects using BACT listed in the current CARB/EPA Clearinghouse Documents are "lqinfsterfal-. not 'Discretionary' decisions. 2. In your view Is the project subject to CEQA? if No, Check reason: [ ]C] I(infsterfal (Sec. 15268) [ ] raergency ProJect (Sec. 15269) [ ] Categorfcaily Exempt (Sec. 15300 - 15329) 'Notice of Exemption- to be flied ulth County Clerk 3. Is there a 'Lead Agency". or does any other agency have discretionary approval authority for this project? I~ Yes. name agency: 4. Has an "Initial Study" been prepared~ 5. Has a "Nega~iv~ Oeclation" been prepar,d~ 6. Has an l:"vi[o~mr,lal Impact R('porl b,-,.~) i,~,pared~ 'N(I" f'(lml*lt't~' .t~,j ';~Jl,mlt Ih,' *'j~llT'jl,fIle''Ill 11 lilff)lm.tlj(Ifl a~i"~'t ~'~1 T~'~l ~ I," ~ q ' ' ' [z! [ ) (.XI (xj IXl IXl IXl EA'VlROR~I~ffAi, INtrOPJ~ATION gOt~ ~ INitIAL S~V EVALUATION N/Ud['. (11' I'H(I.IEC1 PR(II'(INI'.NT CONTA(' T Mark R. TITLE Senior PROJECT DESCRIPTION. __.Hol~uin, Fahan & Associates Inc, Ma..g.a rgee ~ Hydrogeo logi st-O f f ice p~.: (805)391-0517 _~.SOIL REMEDIATION USING VA~OR EXTKACTION SYSTEM [NVIRO.~ENTAL IHFOR/~ATION Will the proposed project with regard to the proposed location: YE~5 ~ ~ Conflict ~lth the adopted environmental plans and goals of the ".'.... cat,unity? [ ]i~ [ ] b. ~ave a substantial, demonstrable negative aesthetic effect? [ j [~ [ ] c. Substantially affector a rare or endangered species of animal a o plant or the habitat of the species? [ ] [~ .[ ] d. later[ere substantially with the movement of any resident " or migratory fish or wildlife species? e. Substantially diminish habitat for fish. wildlife or plants9 [ ] '[ f. 8reach Published national, state, or local standards relat- Ing to solid or litter control~ · ' I ] [~ i[' ~j "' E. Substantially degrade water quality or contaminate a public water Sappl~ · ! ! h. Substantially degrade or deplete ground water resources or Interfere substantially ulth craned water 'recharEe? I. Disrupt or adversely affect 8 prehistoric or historic erch- eoloclcel site or · pro~rty or historic or cultural af~icence ~o · c~euRity or ethnic or s~lll fro~; or e '. paleoatol~icel ~lte e~cept as ~rt GE scientific study? [ j [.~ [ j J- Induce substantial growth or concentration of population? [ j [ ~ [ l k. Cause eft increase Iff traffic which Js substantial Iff r~latiufl ~o the tAistiflc traY[lc load and capacity o~ the n p q. Itl( re,t~,F -~ub~t,-tfit l~J ly thc ~nbien~ noJ~e level for ~iause stJt>slantlal flooding, erosion or siltation? E×pose people or structures to major ffeolofflc hazards? EXtend a sewer trunk line Uith capacity to serve ne~ development? YES ~0 ~A¥[i~ s DiSrupt or divide the physical arrangement of an established co~unity? · t Create a potential Public health hazard or Involve the use. production, or disposal of materials ~hlch pose a hazard to people or aniaa! or plant populations In the area affected? · u Conflict With established recreational, educational. religious or SCientific Uses? v. COnvert Pri~e agricultural land to non-agricultural use or Impair the agricultural productivity of prime agricul- tural land? w. Interface .Ith emergency response or evacuation plans? x. Violate any ambient air quality standard, contribute substantially to an existing or projected air quality violation, or expose sensltve receptors to substantial pollutant COncentration? [ iIX! [ 1 Please attach any pertinent explantory Information. I hereby certify that the statement furnished above and In the attached exhibits Present the data and Information required for this lntlal evaluation to the best of ay ability, and that the facts, statements, and Information Presented are true and Correct to the best of ay knowledge and belief. APPENDIX H ENVIRONMENTAL INFORMATION FORM (To Be Completed By Applicant) Date Filed June 1, 1994 General Information 1. Name and address of developer or project sponsor: Former California Sheet Metal Facility, 601 Eureka Street, Bakersfield, California 2. Address of project: Same as above Assessor's Block and Lot Number: 016-290-01-00-3 3. Name, address, and telephone number of per~n to be conmcted concerning this project: Holguin~ Fahan ~ A~o~a~n~ Tn~-: M~r~ Ma~a~ (805)391-0517, 3157 Pegasus Drive., Bakersfield, CA 93305 Indicate number of the permit application for the project to which this form pertains: one List and describe any other related permits and other public approvals required for this project, including those required by city, regional, state and federal agencies: 6. Existing; zoning district: commercial 7. Proposed use of site (Project for which this form is filed): : Te. mporary soil vapor extraction sy~f. em Project Description (see Attachments) 8. Site size. 9. Square 10. Number of floors of construction. Il. Amount of off-street parking provided. 12. Attach plans. 13. Proposed scheduling. 1~. Associated project. 13. Anticipated incremental development. It;. If.residential, include the number of units, schedule o! unit sizes, ran§e o! sah prices or rents, and type of household size expected. 17. If commercial, indicate the type, whether nei§hborhood, city or regionally oriented. square footage of sales area, and loadin§ facilities. 18. Lf industrial, indicate type, estimated employment per shift~ and loading facilities. lC). If institutional, indicate the major function, estimated employment per shift~ esti. mated occupancy, loadin§ facilities, and community benefits to be derived from the project. ' 20. If lfie project involves a variance, conditional use or rezonin§ application~ state this and indicate clearly why the applicati~ is required. Are the following items applicable to the project or its effects? Discuss below all items checked yes (attach additional sheets as necessary). 21. Change in existing features o! any bays, tidelands, beaches, lakes or hills, or substantial alteration of ground contours. 22. Change in scenic views or vistas from existing residential areas or public lands or roads. 23. Change in pattern, scale or character o! general ar~:a o! project. 2~. Significant amounts of solid waste or litter. 2~. Change in dust, ash, smoke, fumes or odors in vicinity. 2~;. Change in ocean, bay, lake, stream or ground water quality or quantity~ or alteration of existing drainage patterns. ' 27. ~ubstantial change in existing noise or vibration levels in the vicinity. 28. Site en filled land or on slope of lO percent or more. 29. Use of disposal of potentially hazardous materials~ such as toxic substances, flammables er explosives. 30. Substantial change in demand for municipal services (police, fire, water, sewage, etc.). 31. Substantially increase fossil fuel consumption (electricity, oil, natural gas, etc.). X X X x 32. IRelatiot~ship to a larger project or series ol' projecls, x Environmental Setting 33. Describe, the project site as it exists before the project, including information on topography, soil stability, plants and animals, and any cultural, historical or scenic aspects. Describe any existing structures on the site, and the use of the structures. Attach photographs o[ the site. Snapshots or polaroid photos will be accepted. 34. Describe the surrounding properties, including information on plants.and animals and any cultural, historical or scenic aspects, indicate the type of land use (residential, commercial, etc.), intensity Of land use (one-family, apartment houses, shops, department stores, etc.), and scale of development (height, frontage, set-back, rear yard, etc.). Attach photographs of the vicinity. Snapshots or polaroid photos will be accepted. Certification I hereby certify that the statements furnished above and in the attached exhibits present the data and information required for this initial evaluation to the best .of my ability, and that the facts, statements~ and information presented are true and correct to the best of my knowledge and belief. (Note: This is only a suggested form. format for initial studies.) Signature For Holquin, Fahan & Associates, Inc. Public agencies are free to devise their own 30S G J L Environmental ~ar~ ~. ~eary, ~.~.A. Environmental Consultant 4009 FAIRWOOD ST. BAKERSFIELD, CA 93306-1310 (805) 872-1543 April 12, 1994 RECEIVED HAZ MAT. DIV: BAKERSFIELD CITY FIRE DEPARTMENT Hazardous Material Division 2130 "G" Street Bakersfield, California 93301 Re~ 601 Eureka Street, Bakersfield, California Property_ Owners: John M. and Deanna J. McCauley Subject: First Quarter Status Report for 1994 Prepared by: GJL ENVIRONMENTAL Gary J. Leary, R.E.A. Status of Investigation and Cleanup Activities Including the Resulis of Ail Investigations Implemented to Date On January 17 and 18, 1994, six vapor extraction wells were drilled and installed. A vapor extraction test was conducted on January 26, 1994, to determine site-specific. Parameters for use in th~ evaluation ~and designing -the vaPOr extraction system. The consulting firm of Holguin, Fahan & Associates has written the Corrective Action Plan. The Bakersfield City Fire Department the lead agency has approved the Corrective Action Plan. "Exhibit 1". On March 8, 1993 an Expanded Site Characterization was undertaken. On March 19 - 20, 1992, a site characterization was performed to define the vertical and horizontal extent of the contamination plume. No cleanup activities have been implemented. Next Phase of Investigation The authority to construct should be issued this quarter from San Joaquin Valley Unified Air Pollution Control District. Then the vapor extraction unit will be installed and re~nediation Will ~egin~- Drilling of Vapor Extraction Wells is scheduled to commence on January 17, 1994. The environmental consulting firm has been selected, it is Holguin, Fahan & 'Associates. The Corrective Action Plan will be written and work should begin before the end of 1993. On August 13, 1993, an Invitation for Bids was issued to four (4) environmental consulting firms, to supplement and implement a Corrective Action Plan. If the Bakersfield City Fire Department the lead agency in this project agrees with PIWAREA ENGINEERING, INC. Findings from the Expanded Site Characterization. An Invitation for Bids will be issued this quarter, to install the Vapor Extract Wells and treatment unit. On November 16, 1992, the Bakersfield City Fire Department, the lead agency, issued a letter which agreed with site assessment recommendation from John R. Wilson and Associates. An Invitation for Bids was issued on December 23, 1992, to four (4) environmental consulting firms. Method of Cleanup Proposed or Implemented to Date The cleanup method proposed is a vapor extraction unit. This was acceptable to the Bakersfield City Fire Department. Time Schedules for the Completion of the Investigation of the Site and Remediation A time schedule will be included as part of the Corrective Action Plan. Method and Location of Disposal of the Released Hazardous Substance and any Contaminated Soil, l~round Water or Surface Water None has been chosen at this time. Manifest Required for Transport of Hazardous Substances No material was manifest off site this quarter. Monitoring Well Data Including Ground Water Elevation, pH, ConductiviB,~ Temperature and Gradient No monitoring wells have been installed at this time. Tabulated Analytical Results of Ground Water or Soil Samolin~ None in this Quarter. A Site Map Showing the "Zero Line" of Contamination if Known, and Changes in Analyses and Gradient Measurements Over the Last Quarter None in the Fourth Quarter. Tabulated Data for all Monitorin~ Wells Including Ground Water Elevations Collected to Date No monitoring wells have been installed at this time. A Site Map Delineating Ground Water Elevation Contours Based on Recent Data~ if the Site is in Remediation~ Define the Zone of Capture for any Extraction Well(s) on the Contour Map Does not apply at this time. Tabulated Analytical Results from all Previous SamPling Events Including Laboratory Reports for the Most Recent Sampling Event and Chain of Custody Documentation This can be found in the Third Quarter Report. Site Map Delineating Contamination Contours for Soil and Ground Water Based on Recent Data o The site map delineating contamination contours for soil. This map was in the Second Quarter Report of 1993. The Quantity of Ground Water~ Vapors, and Hydrocarbons Removed (in Gals., cu. ft., and lbs., Respectively), During the Reporting Period and Cumulative to Date Does not apply at this time. 4 Times and Dates Equipment Was Not Operating, Cmt~e of Shutdown, and a Corrective Action Plan to Insure Similar Shutdowns do not Reoccur (Proposed Corrective Actions are to be Completed Within 30 Days of the System Shutdown) Does not apply at this time. Estimates of the Quantity of Contamination - Remainint in Soil and Ground Water~ and Time for Completin~ Remediation Does not apply at this time. Sincerely, GJL ENVIRONMENTAL Gary J. Leary, R.E.A. G J L Environmental oary o. I~ary. R.g.~. Environmental Consultant 4009 FAIRWOOD ST. BAKERSFIELD, CA 93306-1310 (805) 872-1543 January 12, 1994 RECEIVED HAZ. M~T. DIV. BAKERSFIELD CITY FIRE DEPARTMENT Hazardous Material Division 2130 "G" Street Bakersfield, California 93301 Re: 601 Eureka Street, Bakersfield, California Property Owners: John M. and Deanna J. McCaule¥ Subject: Fourth Quarter Status Report for 1993 Prepared by: GJL ENVIRONMENTAL Gary J. Leary, R.E.A. Status of Investigation and Cleanup Activities Including the Results of All Investigations Implemented to Date The consulting firm of Holguin, Fahan & Associates has written the Corrective Action Plan. The Bakersfield City Fire Department the lead agency has approved the Corrective Action Plan. 'T_~xhibit 1': On March 8, 1993 an Expanded Site Characterization was undertaken. On March 19 - 20, 1992, a site characterization was performed to define the vertical and horizontal extent of the contamination plume. No cleanup activities have been implemented. Next Phase of Investieation Drilling of Vapor Extraction Wells is scheduled to commence on January 17, 1994. The environmental consulting firm has been selected, it is Holguin, Fahan & Associates. The Corrective Action Plan will be written and work should begin before the end of 1993. On August 13, 1993, an Invitation for Bids was issued to four (4) environmental consulting firms, to supplement and implement a Corrective Action Plan. If the Bakersfield City Fire Department the lead agency in this project agrees with PIWAREA ENGINEERING, INC. Findings from the Expanded Site Characterization. An Invitation for Bids will be issued this quarter, to install the Vapor Extract Wells and treatment unit. On November 16, 1992, the Bakersfield City Fire Department, the lead agency, issued a letter which agreed with site assessment recommendation from John R. Wilson and Associates. An Invitation for Bids was issued on December 23, 1992, to four (4) environmental consulting firms. 2 Method of Cleanup Proposed or Implemented to Date The cleanup method proposed is a vapor extraction unit. This was acceptable to the Bakersfield City Fire Department. Time Schedules for the Completion of the Investigation of the Site and Remediation A time schedule will be included as part of the Corrective Action Plan. Method and Location of Disposal of the Released Hazardous Substance and any Contaminated Soil~ Ground Water or Surface Water None has been chosen at this time. Manifest Required for Transport of Hazardous Substances No material was manifest off site this quarter. Monitoring Well Data Including Ground Water Elevafion~ pH~ Conductivi .W~ Temperature and Gradient No monitoring wells have been installed at this time. Tabulated Analytical Results of Ground Water or Soil Sampling None in the Fourth Quarter. A Site Map Showing the 'Zero Line" of Contamination if Known~ and Changes in Analyses and Gradient Measurements Over the Last Quarter None in the Fourth Quarter. 3 Tabulated Data for all Monitoring Wells Including Ground Water Elevations Collected to Date No monitoring wells have been installed at this time. A Site Map Delineating Ground Water Elevation ContoUrs Based on Recent Data~ if the Site is in Remediation~ Define the Zone of Capture for any Extraction Well(s) on the Contour Map Does not apply at this time. Tabulated Analytical Results from all Previous Sampling Events Including Laborato ,fy Reports for the Most Recent Sampling Event and Chain of Custody Documentation This can be found in Third Quarter Report. Site Map Delineating Contamination Contours for Soil and Ground Water Based on Recent Data The site map delineating contamination contours for soil. This map was in the Second Quarter Report of 1993. The Quanfi .ty of Ground Water~ Vapors~ and Hydrocm~oons Removed (in Gals. cu. ft.~ and lbs. Respectively)~ During the Repo~ing Period and Cumulative to Date Does not apply at this time. Times and Dates Equipment Was Not Operating. Cause of Shutdown~ and a Corrective Action Plan to Insure Similar Shutdowns do not Reoccur {Proposed Corrective Actions are to be Completed Within 30 Days of the System Shutdown) Does not apply at this time. Estimates of the Quanti .ty of Contamination Remaining in Soil and Ground Water~ and Time for 'Completing Remediafion 4 Does not apply at this time. Sincerely, GJL ENVIRONMENTAL Gary J. Leary, R.E.A. FIRE DEPARTMENT S. D. JOHNSON FIRE CHIEF CITY of BAKERSFIELD "WE CARE" December 6, 1993 2101H STREET BAKERSFIELD, 93301 326-3911 John McCauley c/o Byrum, Holland & Griffin 1675 Chester Ave.., Fourth Floor Bakersfield, CA 93301 RE: Work Plan for the Vapor Extraction Remediation Project at 601 Eureka Street, Bakersfield, California Dear Mr. McCauley: This is to notify you that.the workplan for the above stated address is satisfactory. Please give this office 5 working days notice prior to the commencement of Work. Please be advised that any work done that is not performed under direct oversight by this office will not be accepted, unless previously approved. If You have any questions~ please call me at (805) 326-3979. Sin erel , Ralph E. Huey-- ~ Hazardous Materials Coordinator Underground Tank'.Program CC: Patrick C. CarriCk, Byrum, Holland & Griffin Mark R. Magargee, Holguin, Fahan & Associates SSi'ATE OF CALIFORNIA - CALIFORNIA ENVIRON~L PROTECTION AGENCY . PETE WILSON, Governor STATE WATER RESOURCES CONTROL BOARD DIVISION OF CLEAN WATER PROGRAMS 2014 T STREET, SUITE 130 P.O. BOX 944212 ' SACRAMENTO, CALIFORNIA 94244-2120 (916) 227-4307 (916) 227-4530 (FAX) John and Deanna McCauley 4293 Country Club Drive Bakersfield, CA 93306 UNDERGROUND STORAGE TANK CLEAlqTJP FUND PROGRAM, REQUEST, CLAIM NUMBER: 000802 REIMBURSEMENT We have reviewed and processed your Reimbursement Request No. 1 dated November tl, 1993 for the subject claim and you will be receiving your funds shortly. Based on this review, we have determined $3,190.00 to be reimbursable as shown on the attached .............. ReimbUrsement -R~s~= 'F~. T6~al- ~p~d~ fdr~paYme~t to ~e .is ....... $3,190.00. 0 To understand how the disallowed and ineligible costs were determined, we are attaching a. copy of our Technical Review Unit's findings (Technical Review Summary). If you have any questions regarding.these findings, please cont'act George Lockwood at (9.16) 227-4424. All disallowed costs requiring additional information must be re-submitted with a future Reimbursement Request. The ineligible costs must be deleted from the cumulative total on your. next Reimbursement Request. For-.those costs determined ineligible you must request a Final Staff Decision within thirty (30) calendar days from the date of this letter. With your next Reimbursement Request, please enclose copies of all cancelled checks for the invoices lis~ed on-~the attached Claims Review Summary. Submit all Reimbursement Requests and Appeals to ~Team Leader) at the above address. Please Note: Future. "Reimbursement Requests" must show the cumulative total (total~to~date) of all costs incurred (bring balance forward) as discussed-on pages .5 and 6 of the Instruction Booklet. If you have any questions regarding reimbursement funds or need additional forms (Reimbursement Requests or Spreadsheets),'please call Susan Phillips at (916) 227-4366. Sincerely, Nancy Callsen, SSA UST Cleanup Fund Program Attachments cc: Bakersfield-City Fire Dept. Hazardous Materials Division 2130 G Street Bakersfield, CA 93301 Atten: Ralph E. Huey REIMBURSEMENT REQUEST - UNDERGROUND STO[.f~GE TANK CLEANUP FUND DATE: 11/1'1/9 3 RF. IMBURSEME~XlTNO. 1 CLAI3~ NO. 000802 CLAI&YANT:JOHN ye DEANNA MCCAULEY CO--FA YEE'!~ONE CLAIMANT ADDRESS: 4293 COLTN'I-RY CLUB DRIVE · BAKERSFIELD, CA 93306 CONTAMI2VATED SITE: FORMER CALIFORNIA SHEET METAL FACILITY ADDRESS: 601 EUREKA STREET BAKIERSFIELD, CA 93305 ............................................................ COST CA TEGOR Y iiiii:~R::::O~i:::iiii::ii COSTS ' :~:ig!:~:~:::::!:':::::i:i:i:i: :i:.:!':: ::': ::!: :!:Di:': :::[: ::: :::: i'COM'~I~~ INCURRED. i'i'i'"'"': ..:s'.' C£R TZFICA TION : I have read and agree adth the "Conditions of Payment" (~xfiibit O, listed on the reverse side o£ this document. T~e costs claimed in column (B) have been incurred and have been paid or ad11 be paid udth;n thirty (30) days of receipt o£ the funds requested hereby. I£$uch costs have not been paid udthin 30 days, funds received under this request udll be returned to the SLate Water ResoUrces Control Board. Form USTCF-REO Kenneth M. Byrum Kenneth A. Holland Patrick C. Carrick David R. Griffin Robert H. Brumfield, 111 Christopher M. Dietrich Linda Etienne Scott D. Perlman James M. Duncan John R Fitzmorris Alan B. Harris BYRUM, HOLLAND & GRIFFIN Attorneys at Law NOV 1 9 1993 ~ Post Office Box 2348 Bakersfield, CA 93303-2348 1675 Chester Avenue, Fourth Floor Bakersfield, CA 93301 Telephone (805) 635-3000 Facsimile (805) 322-0113 November 17, 1993 Mr. Ralph E. Huey, Hazardous Materials Coordinator, Underground Tank Program Bakersfield Fire Department CITY OF BAKERSFIELD 2101 "H" Street Bakersfield, California 93301. Re: Our Clients Mr. and Mrs. John M. McCauley; Soil and Water Investigation; 601 Eureka Street, Bakersfield, California Dear Mr. Huey: Enclosed please find the Corrective Action Plan supplement and Phases III and IV workplan for your review and approval. Very truly yours, Enclosure cci PATRICK C. CARRICK Mr. and Mrs. McCauley Holguin, Fahan & Associates, Inc. ENVIRONMENTAL 143 South Figueroa Street * Ventura, California 93001 853 West 17th Street * Costa Mesa, California 92627 3157 Pegasus Drive * Bakersfield, California 93308 MANAGEMENT CONSULTANTS (805) 652-0219 . FAX (805) 652-0793 (714) 642-2660 · FAX (714) 642-2544 (805) 391-0517 · FAX (805) 391-0826 November 15, 1993 Mr. John M. McCauley In Care of Patrick C, Carrick Byrum, Holland & Griffin Post Office Box 2348 Bakersfield, California 93303-2348 Subject: WORK PLAN SUPPLEMENT TO THE CORRECTIVE ACTION PLAN FOR THE INSTALLATION OF A VAPOR EXTRACTION SYSTEM AT CALIFORNIA SHEET METAL 601 EUREKA STREET, BAKERSFIELD, CALIFORNIA Dear Mr. McCauley: The following work plan outlines Holguin, Fahan & Associates, Inc.'s (HFA) proposed methodology for the remediation of gasoline-containing soils at the above referenced site. This work is required by the Bakersfield Fire Department Hazardous Materials Division (BFDHMD) Underground Storage Tank (UST) Local Oversight Program (LOP). HFA proposes to install and operate a vapor extraction system (VES) using a thermal oxidation/catalytic conversion unit, which will destroy gasoline vapors extracted from the contaminated soil.using a positive displacement vacuum blower. HFA also proposes to conduct soil sampling to confirm that no hazardous concentrations of gasoline remain in the subsurface, Prepare a closure report, and provide your consultant with the results of sample collection, laboratory analysis, and other data for inclusion In his quarterly progress report. SITE DESCRIPTION: California Sheet Metal is located at 601 Eureka Street in a commercial and light Industrial district of the city of Bakersfield, California (see Figure 1 - Site Location Map). The site previously housed a single 550-gallon, gasoline UST (see Figure 2 - PIct Plan). The property owners are John M. and Deanna J. McCauley0 4297 Country Club Drive, Bakersfield, California, 93306. The consultant contact is Mark, R. Magargee, Holguin, Fahan & Associates, Inc., 3157 Pegasus Drive, Bakersfield, California, 93308, (805) 391-0517. 2. SITE MAPS: Site maps are included as Figure 1 and Figure 2. ENVIRONMENTAL PLANNERS · SCIENTISTS · GEOLOGISTS AND ENGINEERS Contaminated Site Assessments * Real Estate Audits * Site Remediation * Hazardous waste Management HOLGUIN, FAHAN & IATES, INC. ENVIRONMENTAL MANAGEMENT CONSULTANTS Mr. John M, McCauley California Sheet Metal November 15, 1993 - Page 2 TOPOGRAPHY, GEOLOGY, AND HYDROGEOLOGY: The site is located in the southern part of the Great Valley geomorphic province. The Great Valley is a north-south trending valley approximately 400 miles long by 50 miles wide, the southern portion of which is referred to as the San Joaquin Valley. The surface of the San Joaquin Valley is underlain by unconsolidated, Quaternary-aged, alluvial sediments. The alluvial sediments are underlain by older, predominantly lake bed deposits. These deposits lie unconformably on Miocene-Pliocene-aged marine sediments, which extend to crystalline basement at approximately 20,000 feet below ground level (BGL). Geologic deposits in the study area include Pleistocene-aged alluvial sediments of the Kern River Formation, which form a homocline dipping gently to the south. The deposits are alluvium consisting of poorly indurated and dissected fan deposits (California Division of Mines and Geology, 1964). The near surface alluvium consists of silty sands and fine-grained to coarse-grained sands, with Intervals of finer-grained, sandy silts and minor clay. Subsurface material encountered during previous drilling at the site was alluvium to the total depth of each soil boring. The previous assessments at the site indicate a moderate to good permeability, silty-sand to well-graded sand section to a depth of approximately 90 feet BGL. The subject site is located on the eastern edge of the San Joaquin Valley and western flank of the southern Sierra Nevada. The Kern River drains a large area of the southern Sierra Nevada, including the highest part of the range at Mount Whitney. The modern river has cut a canyon north of the site and provides recharge for groundwater along its course. Sedimentary geologic formations observed at the surface and underlying the site were sourced by the Sierra Nevada and transported via the ancestral Kern River. Surface and groundwater in the San Joaquin Valley is derived predominantly from the Sierra Nevada mountain range to the east and is transported by five major rivers, the closest to the site being the Kern River. The depth to the regional unconfined aquifer is approximately 200 feet BGL beneath the site, and the groundwater gradient is to the south (Kern County Water Agency, 1992 Report on Water Conditions, Improvement District No. 4, February 1993). The nearest known occurrence of perched groundwater is 2 miles to the southwest at a depth of 20 feet BGL in the abandoned Kern River channel to the ancient Kern Lake bed (Kern County Water Agency, 1992 Water Supply Report, May 1993). HOL©UIN, FAHAN & ASSOCIATES, INC. ENVIRONMENTAL MANAGEMENT CONSULTANTS Mr, John M, McCauley California Sheet Metal November 15, 1993 - Page 3 tn the region of the site, the Tertiary sedimentary sequence, from top to bottom, is nonmarine Kern River Formation, nonmarine Chanac Formation, marine Santa Margarita Formation (possibly interfingering with Chanac Formation due to tentative correlation of type Santa Margarita Formation section west of the San Andreas fault), marine Round Mountain Silt, marine Olcese Sand, marine Freeman Silt, marine Jewett Sand and Pyramid Hill member, marine Vedder Sand, and nonmarine Walker Formation. Of these, only the Kern River, Chanac, and Santa Margarita Formations are important to the hydrogeology of the site. The Tertiary, nonmarine Kern River Formation is unconformably overlain by bouldery terrace deposits of Quaternary Older Alluvium. Two naturally occurring geologic units are present in the near surface within the site. The two natural units are the Tertiary (Miocene to Pliocene-aged) nonmarine Kern River Formation and the Quaternary (Pleistocene-aged) Older Alluvium. The Older Alluvium forms a thin terrace deposit lying unconformably on the Kern River Formation. Quaternary Older Alluvium: The alluvium is middle to lower Pleistocene age (aaa2 of Bartow, 1984). The Older Alluvium is a flat lying terrace deposit approximately 5 to 10 feet thick, which overlies the erosional surface of the Kern River Formation. The Older Alluvium is comprised of very coarse material, with boulders to 50 centimeters (cm) in diameter. Clastic material composition includes granitic and dioritic crystalline rocks characteristic of the Sierra Nevada batholiths, quartzite characteristic of pre-batholithic rocks, and volcanic and related rocks such as andesite and dark siliceous agate typical of Neogene deposits of the Mojave desert. In some locations caliche rims have developed between clasts, Kern River Formation: The age of the Kern River Formation includes upper Miocene and Pliocene age, and possibly Pleistocene age. The Kern River Formation is composed of interstratified fanglomeratic deposits and silty claystones. Within the fanglomerates are conglomerate beds with cobbles to 20 cm in diameter, and in some areas fanglomerate beds exhibit cross bedding 2.5 to 5 meters thick. The silty claystone beds, which would serve as Iow permeability barriers to vertical migration, are laterally continuous as much as several thousand feet, but are locally truncated by sandy fanglomerate units. Another important factor in considering the potential for migration is the lack of secondary permeability within the Kern River Formation, as no secondary cracks, small faults, or gypsum veins are observed. Chanac Formation: The Chanac Formation of upper Miocene age is not exposed within the si're area but outcrops in the cliffs northeast along the Kern River bluffs at Hart Park. ~t is a thinly bedded, chalky siltstone exhibiting many secondary cracks and gypsum veins. HOLGUIN, FAHAN & ASSOCIATF.~,, INC. ENVIRONMENTAL MANAGEMENT CONSULTANTS Mr, John M. McCauley California Sheet Metal November 15, 1993 - Page 4 TANK HISTORY: California Sheet Metal contracted with Calpi, Inc., of Bakersfield, California, to remove the 550-gallon gasoline UST, dispenser, and associated underground product line on December 17, 1991. The tank was removed under BFDHMD UST LOP Permit #BP-0031. IDENTIFICATION AND ESTIMATED GUANTII¥ OF MATERIAL RELEASED: Gasoline fuel: unknown quantity released. PREVIOUS WORK: During the tank removal, soil samples were collected from 2 and 6 feet below the center of the tank cavity at the direction of Mr. Joe Dunwoody with the BFDHMD UST LOP. Concentrations of total petroleum hydrocarbons (TPH) as gasoline, and benzene, toluene, ethylbenzene, and total xylenes (BTEX) were detected in the soil samples (see Attachment 1, Table 1.1, for a summary of the tank removal soil sample analysis results]. On March 19, 1992, six soil borings (B-1 through B-6) were drilled by Wilson and Associates, Inc., (W&A) in order to inspect the subsurface conditions and to determine whether soil and groundwater contamination was present beneath the site (see Figure 2). Concentrations of TPH as gasoline and BTEX were detected in soil samples to a depth of less than 75 feet BGL and less than 50 feet laterally from the former UST location (see Attachment 1, Table 1.2, for a summary of the preliminary W&A assessment soil sample analysis results). However, the lateral limits to the northwest and southeast were not delineated by the preliminary site characterization. Upon review of the preliminary site characterization, the BFDHMD UST LOP requested additional soils investigation to address these issues, On March 8, 1993, three soil borings (B-7 through B-9) were drilled by Piwarea Engineering, Inc., (Piwarea] at the site (see Figure 2]. The additional soils investigation showed that TPH as gasoline and BTEX concentrations were present to a depth of less than 75 feet BGL and less than 35 feet laterally from the former UST location (see Attachment 1, Table 1.3, for a summary of the expanded Piwarea assessment soil sample analysis results). STRATEGY AND PROCEDURES FOR CLEANUP OF THE KNOWN CONTAMINATION: The intent of this work plan is to take measures to reduce the concentrations in the gasoline-containing soil to below the action level of TPH as gasoline (100 rog/kg) as prescribed by the BFDHMD UST LOP. HFA proposes to accomplish this through the installation and operation of a VES. HOLGUIN, FAHAN & ASSOCIATES, INC. ENVIRONMENTAL MANAGEMENT CONSULTANTS Mr, John M, McCouley California Sheet Metal November ] 5, ] 993 - Page 5 8.1 8.2 DESCRIPTION OF ALL WORK TO BE PERFORMED: Prior to any intrusive methods being conducted at the site, USA Underground Alert will be utilized to map out the underground structures. Based on the clearances obtained, HFA will site the vapor extraction wells in safe locations, Remedial Action Permits: Prior to the installation and operation of the in-situ VES, permits must be obtained from the San Joaquin Valley Unified Air Pollution Control District - Southern Zone (SJVUAPCD-SZ). The application contains detailed engineering data on the proposed remedial system. Estimates used to establish design criteria will be presented. Design criteria will include radius of influence (ROI), lithologic parameters (i.e., air permeability), hydrocarbon concentration in air stream, estimated pore volume turnover, treatment equipment specifications per permit requirements (i.e., Authority to Construct (ATC) and Permit to Operate (PTa)), and an estimated time for cleanup. After receiving the ATC permit, a field trial (treatability study) of the system is required before the PTa can be issued. Vapor Extraction Well Installations: A total of six soil borings will be drilled as part of the installation of the YES (see Figure 2). Three soil borings (VW-1 through VW-3) will be drilled through the center of the area showing the greatest concentrations of gasoline hydrocarbons and completed as a vapor extraction well cluster. One of these soil borings (VW-1) will be drilled to a depth of 70 feet BGL and will be completed with 25 feet of slotted well screen in such a way that the interval from 45 to 70 feet BGL will be accessed in the area of gasoline-containing soil, The second soil boring (VW-2) will be drilled to a depth of 45 feet BGL and will be completed with 2,5 feet of slotted well screen in such a way that the interval from 20 to 45 feet BGL will be accessed in the area of gasoline-containing soil. The third soil boring (VW-3) will be drilled to a depth of 20 feet BGL and will be completed with 15 feet of slotted well screen in such a way that the interval from 5 to 20 feet BGL will be accessed in the area of gasoline-containing soil. The other three soil borings (VW-3 through VW-5) will be positioned at locations designed to effectively remediate gasoline hydrocarbons in the lateral area of the vadose zone plume. Each soil boring will be drilled to a depth of 40 feet BGL and completed with 30 feet of slotted well screen in such a way that the interval from 10 to 40 feet BGL will be accessed. The six wells will be valved so as to be usable as inlet wells during the extraction phase to enhance air flow across the gasoline-impacted zone. Soil sampling will not be performed while drilling because the soil borings are positioned within an area that has previously undergone extensive sampling and laboratory analysis. HOLGUIN, FAHAN & ASSOCIATES, INC. ENVIRONMENTAL MANAGEMENT CONSULTANTS Mr. John M, McCauley California Sheet Metal November 15, 1993 - Page 6 Vapor extraction well construction details are anticipated to include the following: 4-inch diameter, PVC, slotted casing will be placed down the annulus of 10-inch diameter, hollow-stem augers, The screened interval will be limited to 30 feet in any well in order to create a maximum ROI and efficiently extract the hydrocarbons, Construction of the well above the screen to the ground surface will be 4-inch diameter, blank PVC casing. A filter pack will be placed in the annular space between the well screen and the soil boring wall. This filter pack will extend from the bottom of the soil boring to approximately 5 feet above the well screen, A 5-foot-thick bentonite seal will be Installed at the top of the filter pack in order to prevent short circuiting to the surface. A cement/sand/bentonite slurry will be placed from the top of the bentonite seal to the ground surface, Each wellhead will be protected by a locking, water-tight, traffic grade well cover installed in concrete (see Attachment 2 for vapor extraction well construction details and Figure 3 - Piping Diagram]. Vapor Extraction Test: Prior to obtaining the permit to operate the VES on a full-time basis, a treatability study will be necessary in order to collect data to demonstrate that the air flow from the effluent stack of the system does not present a health risk to employees or the adjacent residential neighborhood, A vapor extraction test will be conducted in order to determine the flow rate/vacuum characteristics of the subsurface soils, the ROI surrounding vapor extraction wells VW-1, VW-2, and VW-3, the average intrinsic soil permeability, and the hydrocarbon concentrations within the extracted vapors. The equipment used to conduct the test 'will include a 3-horsepower, Sutorbilt Model 4HVL, positive displacement blower capable of generating flow rates of up to 115 cubic feet per minute at a wellhead vacuum (WHY) of · 110 inches of water column, and two Westates Carbon, Inc.. Model VSC-200, activated-carbon filters to control volatile organic emissions to the atmosphere. System parameters will be monitored using various magnahelic vacuum gauges; pitot tube and turbometer flow gauges; and a photoionization detector. Specific test procedures and equipment are summarized in Attachment 3. Two vapor extraction tests are proposed using wells VW-2 and VW-3 as the extraction wells (see Figure 2). A step test will be conducted, This test is performed by extracting soil vapors at three different vacuums for a duration of approximately 20 minutes. Selected vacuum steps will be approximately one third of the maximum vacuum achieved by the blower. Flow rates and corresponding WHV's and subsurface vacuums will be monitored, and the data will be recorded on a vapor extraction test recording Icg, The results of the HOLGUIN, FAHAN & A.SSC IATES, INC. ENVIRONMENTAL MANAGEMENT CONSULTANTS Mr. John M. McCauley California Sheet Metal November 15, 1993 - Page 7 test will be summarized graphically and in tabular form, and the information will be utilized to calculate an ROI for various flow rates and the intrinsic soil permeability of the vented zone. After the step test Is performed, subsurface vacuums will be allowed to stabilize and a constant-rate flow test will be performed. The constant-rate flow test is generally performed at the maximum WHV achieved during the step test. Monitoring of subsurface vacuums in surrounding wells, system vacuums, flow rates, temperature, and volatile organic concentrations will be recorded at 1-minute to 15-minute intervals throughout both tests, and all data will be recorded on a vapor extraction test recording log. The duration of. the constant-rate flow test will be approximately 2 hours for each vapor extraction well. Four vapor samples will be collected in fedlarTM bags and analyzed by a California state-certified laboratory for TPH as gasoline using DHS Draft Method and for BTEX using EPA Method TO-14. Samples will be collected at the beginning of each step test 'interval and at the end of each constant-rate flow test interval from vapor extraction wells V W-2 and VW-3. 8.4 Vapor Extraction System Operation and Maintenance: The VES is designed for continuous operation, 24 hours a day, 7 days per week until the concentration of gasoline hydrocarbons in the soil is reduced to less than the BFDHMD UST LOP recommended guidelines. The anticipated duration of the remediation phase of the project is 6 months from the beginning of the remediation. Volatile-hydrocarbon-laden vapors are extracted from the subsurface soil and are delivered to the VES by the induction action caused by the vacuum pump. A detailed description of the selected YES will be contained in the ATC permit .application, which will also contain the results of the vapor extraction test. 8.5 Verification Soil Sampling: After remediation appears to have advanced to a point that field measurements of the extracted vapors have reached a symbiotic level, then three verificatian soil borings will be advanced, One soil boring will be advanced to a depth of 70 feet BGL through the central area where the greatest original gasoline hydrocarbons had been observed. The other two soil borings will be advanced to depths of 50 feet BGL at locations to verify successful soil treatment laterally from the source of impaction. Based on field observations, approximately 18 soil samples will be analyzed for TPH as gasoline and for BTEX by a California state-certified laboratory, Analysis of these soil samples provides the post-treatment data necessary to verify that the concentrations of gasoline HOLGUIN, FAHAN & AS93CIATES, INC. ENVIRONMENTAL MANAGEMENT CONSULTANTS Mr, John M, McCauley California Sheet Metal November 15, 1993 - Page 8 hydrocarbons in the subsurface no longer exceed the proposed action level of 100 mg/kg (see Attachment 4). 8.6 Equipment Decommissioning: Upon successful completion of the remediation and with the approval of the BFDHMD UST LOP, HFA will remove all of the surface equipment from the site, remove the piping connecting the wells with the treatment unit, and abandon the wells in accordance with BFDHMD UST LOP protocol. 8.7 Closure Report: Upon successful completion of the remediatlon, HFA will provide a closure report that details the remedial field activities, sample collection, analytical results, data analysis, conclusions, and HFA's recommendation that no further remedial activities are required. Certified laboratory reports and chain-of-custody documents will be included. WORK SCHEDULE: Work will begin within 2 weeks subsequent to acceptance of this work plan by the BFDHMD UST LOP and authorization from John M. McCauley. The BFDHMD UST LOP will be notified at least 48 hours before any on-site work commences. The waiting time for the SJVUAPCD-SZ to review the ATC permit application will likely be on the order of 1 month. Upon obtaining the ATC permit, the system can be installed within 1 month. After conducting the treatability study, another 1-month waiting period is incurred prior to the SJVUAPCD-SZ's issuance of the PTO. Once remediation begins, HFA anticipates completion of the soil remediation within 6 months, Upon completion of the soil remediation and verification soil borings, a closure report will be provided to the BFDHMD UST LOP within 1 month. 10. SITE SAFETY PLAN: A health and safety plan developed by HFA"s industrial hygienist for UST site remediations is included in Attachment 5. Procedures for conducting all work are outlined In this plan, and site-specific information Is provided on the cover page. All work will be accomplished in accordance with all regulatory requirements os defined by the State Water Resources Control Board's Leaking Underground Fuel Tank (LUFT) Field Manual and the BFDHMD UST LOP LUFT guidance documents. HOLGUIN, FAHAN & ASSOCIATF , INC. ENVIRONMENTAL MANAGEMENT CONSULTANTS Mr, John M, McCauley California Sheet Metal November 15, 1993 - Page 9 Holguin, Fahan & Associates, Inc,, trusts that this work plan provides you with the information you require, If you have any questions or require additional information, please do not hesitate to call, Respectfully submitted, Kenneth J, Mitchell Assistant Geologist Holguin, Fahan & Associates, Inc, Mark R,'M-aga'Tgee, ~.~. ~ Senior Hydrogeologist Holguin, Fahan & Associates, Inc, MRM:ffm:kad Enclosures: Figure 1 Site Location Map Figure 2 Plot Plan Figure 3 Piping Diagram Attachment 1 - Summary Tables Attachment 2 - Vapor Extraction Well Construction Details Attachment 3 - Vapor Extraction Test Procedures Attachment 4 - Borehole Drilling and Soil Sampling Procedure~. AHachment5 - Health and Safety Plan itl No. 4892 SITE LEGEND REVISON DATE: OCTOBER 15. 1993 KJM JOHN M. AND DEANNA J. McCAULEY CALIFORNIA SHEET METAL 601 EUREKA STREET BAKERSFIELD, CALIFORNIA FIGURE 1 - SITE LOCATION MAP HOLGUIN, FAHAN & ASSOCIATES, INC. ' E'REKAI,) STREET .... SIDEWALK GATE CHAIN-LINK FENCE ,I;,. ~ CALIFORNIA SHEET METAL Z ~j BUILDING CONCRETE SLAB ~ , CANOPY ' \ , kIMrl' OF GASOLINE-CONTAINING '~. ...... SOIL CHAIN-LINK FENCE ~ ALLEY · LEGEND JOHN M. AND DEANNA J. McCAULEY SCALE IN FEET CALIFORNIA SHEET METAL · BOREHOLE LOCATIONS ~~ 601 EUREKA STREET B-4 0 10 20 BAKERSFIELD, CALIFORNIA I .~ FIGURE 2 - PLOT PLAN N , ,~-- HOLGUIN, FAHAN & ASSOCIATES, INC. {EVISON DATE: OCTOBER 2~. 1993: KJM SIDEWALK "" ' CHAIN-LINK FENCE GATE F- CALIFORNIA o~ SHEET METAL z cc BUILDING ! CONCRETE I SLAB ~' [~ ............ ,_ _ - - \~.~ GATE VES CANOPY UNn .............. , 1~6 GASOLINE~O~AINING · '- ~' ~~ ~ ~. CHAIN-LINK ~7 ~GEND JOHN M. AND D~NNA J. M~AULEY ~E IN FE~ CALIFORNIA SHE~ M~AL ~ BOREHOLE L~ATIONS ~~ ~1 EUREKA STRE~ ~4 0 lO ~ BAKERSFIELD, CALIFORNIA ~... FIGURE 3 - PIPING DIAG~M ~.~ VA~R EXTRACTION ~LL LOCATIONS N REVISON DATE: OCTOBER 28. 1993: KJM HOLGUIN, FAHAN & ASSOCIATES, INC. ENVIRONMENTAL MANAGEMENT CONSULTANTS ATTACHMENT 1. SUMMARY TABLES TABLE 1.1 SUMMARY OF SOIL SAMPLE ANALYSIS RESULTS FROM THE DECEMBER 17, 1991 TANK PIT EXCAVATION SAMPLE TPH AS ETHYl_- TOTAL NUMBER DEPTH GASOLINE BENZENE TOLUENE BENZENE XYLENES (feet BTB) (mg/kg) (mg/kg) (mg/kg) (mg/kg) (mg/kg) aPL N/A 1 0.005 0.005 0.005 0.005 S-1 2 810 44 170 19 153 S-2 6 10,000 98 275 23 290 BTB = Below tank base. MRL = Minimum reporting level. N/A = Not applicable. TABLE 1.2 SUMMARY OF SOIL SAMPLE ANALYSIS RESULTS FROM WILSON & ASSOCIATES, INC.'S MARCH 19, 1992, ASSESSMENT BORING TPH AS ETHYL- TOTAL TOTAL ORGANIC NUMBER DEPTH GASOLINE BENZENE TOLUENE BENZENE XYLENES LEAD LEAD (feet BGL) (mg/kg) (mg/kg) (mg/kg) (mg/kg) (mg/kg) (mg/kg) (rng/kg) MRL N/A I 0.005 0.005 0.005 0.005 2.5 0.5 B-1 5 6,000 N D (>20) 210 50 1,960 39 2.7 B-1 15 6,000 N D(>100) 390 170 1,290 .... B-1 30 3,100 N D (>2) 86 71 438 4.5 -- B-1 45 3,000 5 160 75 390 - -- B-1 60 13,000 110 1,300 300 2,560 .... B-1 75 ND ND ND ND ND ND -- B-1 80 ND ND ND ND ND .... B-1 85 N D N D 0.047 ND 0.014 4.5 -- B-1 90 N D 0.084 0.16 0.049 0.088 .... B-2 15 12,000 1,000 1 ~500 340i 2,480 .... B-2 30 ~ 400 0.2 1.2 4.7] 49 3.9 -- B-3 30 30,000 400 3~400 800 4,300 - -- B-4 30 ND' ND ND ND~ ND - -- B-4 .40 ND ND ND ND ND - -- B-5 15 ND 0.011 0.017 ND NDI .... B-5 40 7,000 42J 540j 160 810 - -- B-6 20' ND NDI NDI ND ND, 3.6 -- B-6 30 ND ND ND; ND ND B-6 40 ND ND~ 0.008 ~ ND 0.010 8.5 -- BGL = Below ground level. MRL = Minimum reporting level. N/A = Not applicable. N D = Not detected. -- = Not analyzed. Summary Tables Page :2 TABLE 1 .,~ SUMMARY OF SOIL SAMPLE ANALYSIS RESULTS FROM PIWAREA ENGINEERING, INC.'S MARCH 8, 1993, ASSESSMENT BORING TPH AS ETHYL- TOTAL NUMBER DEPTH GASOLINE BENZENE TOLUENE BENZENE XYLENES (feet BTB) (mg/kg) (mg/kg) (mg/kg) (mg/kg) (rog/kg) MRL N/A 1 0.005 0.005 0.005 0.005~ B-7 20 ND ND ND ND ND B-7 30 ND ND ND ND ND B-7 50 N D 0.064 0.029 N D 0.015 B-8 20 ND ND ND ND ND B-8 35 N D 0.079 0.11 N D 0.090 B-9 30 ND ND ND ND ND B-9 40 ND ND ND ND ND B-9 50 N D 0.11 0.027 N D 0.045 BTB = Below tank base. MRL = Minimum reporting level. N/A = Not applicable. N D = Not detected. HOLGUIN, FAHAN & ASS(2g2IATES, INC. ENVIRONMENTAL MANAGEMENT CONSULTANTS A'I'I*ACH ME NT 2. VAPOR EXTRACTION WELL CONSTRUCTION DETAILS VAPOR EXTRACTION WELL CONSTRUCTION DETAILS SITING Vapor extraction wells will be Positioned as noted in work plan. DRILLING PROCEDURES Boreholes for installation of vapor extraction wells will be drilled with either ten or six-inch outside-diameter hollow-stem flight auger as specified in the work plan, Cuttings from the boreholes will be logged by an experience environmental geologist under the direct supervision of a California registered geologist. The soil will be classified according to the standard Unified S0il Classification System, Observations regarding the types and quantities of waste materials encountered and any photoionization detector readings will be logged, All data collected during the borings will be recorded on individual borehole logs, CONSTRUCTION MATERIALS The vapor extraction wells will be constructed of four-inch PVC casing. The screen length of slotted casing will be limited to 30 feet in each well, The design of the proposed wells will be according to Department of Health Services (DHS) and BFDHMD UST LOP guidance manuals, The specifications are listed In the following table, VAPOR EXTRACTION WELL SPECIFICATIONS Casing Size: Four-inch inside diameter, Casing Materials: Sch, 40 PVC, Filter Pack: Washed aquarium sand extending no more than five feet above the well screen. Sealant: Fve feet of sodium bentonite immediately over the filter pack, Cement and bentonite mixture used as annular sealant from the top of the bentonite seal to the graund surface (two to five percent bentonite by weight). Well Covers: 12-inch diameter locking aluminum access covers. Screen Length: 30 feet of 0.03 inch slotted well screen, Well Construction Details Page 2 DOCUMENTATION REQUIREMENTS All well design and construction completed during the investigation will be documented with the following information: · Date/time of construction; · Drilling method; · Well location (+0,5 feet); · Well depth (_+O, 1 foot); · Drilling and lithologic logs; · Casing material; · Screen material and design; · Casing and screen joint size; · Type of protective cap; · Detailed drawing of well; · Well cap elevation (+_0.5 feet); · Top of casing elevation (+_0,01 foot); · Screen slot size/length; · Filter pack material and size; · Filter pack placement method; · Sealant materials; · Sealant volume; · Sealant placement method; · Surface seal design/construction; · Borehole diameter and well casing diameter; and · Relative ground surface elevations (+_0,01 ft). VAPOR EXTRACTION WELL CONSTRUCTION DETAILS Client Name Project Name Site Address Date Completed Supervised by John M. McCauley California Sheet Metal 601 Eureka Street, Bakersfield, California November 1993 Mark R. Magargee, R.G. Figure No Well Nos. N/A WELL COVER GROUND SURFACE : TOP WELL CAP : 'i ~SURFACE SEAL -- ANNULAR SEAL LOW PERMEABILITY SEAL WELL CASING PACK depth of surface seal type of sudace seal annular seal thickness type of annular seal Iow permeability seal thickness type of Iow permeability seal diameter of well casing type of well casing depth of top of gravel pack type of gravel pack 5 feet Neat cement 30 feet Neat cement 5 feet Bentonite chips 4 inches Sch. 40 PVC 40 feet Aquarium sand --SCREEN depth of top of screen screen slot size 45 feet 0.02 inches 70 feet 10 inches 70 feet -- BOTTOM WELL CAP HOLGUIN, FAHAN & ASSOCIATES, INC. (805) 391-0517 depth of well diameter of borehole depth of borehole 3157 Pegasus Drive Bakersfield, California 93308 VAPOR EXTRACTION WELL CONSTRUCTION DETAILS Client Name Project Name Site Address Date Completed Supervised by John M. McCauley California Sheet Metal 601 Eureka Street, Bakersfield, California November 1993 Mark R. Ma~largee, R.G. WELL COVER I GROUNDSURFACE Figure No.. Well Nos. SURFACESEAL ANNULAR SEAL depth of surface seal type of sudace seal annular seal thickness type of annular seal Iow permeability seal thickness LOW PERMEABILITY SEAL type of Iow permeability seal WELL CASING diameter of well casing type of well casing GRAVEL PACK depth of top of gravel pack type of gravel pack N/A 5 feet Neat cement 5 feet Neat cement 5 feet Bentonite chips 4 inches $ch. 40 PVC 15 feet Aquadum sand --SCREEN depth of top of screen screen slot size 20 feet 0.02 inches 45 feet · 10 inches 45 feet ~ BOTTOM WELL CAP HOLGUIN, FAHAN & ASSOCIATES, INC. (805) 391-0517 depth of well diameter of borehole depth of borehole 3157 Pegasus Drive Bakersfield, California 93308 VAPOR EXTRACTION WELL CONSTRUCTION DETAILS Client Name Project Name Site Address Date Completed Supervised by John M. McCauley California Sheet Metal 601 Eureka Street, Bakersfield, California November 1993 Mark R. Magargee, R.G. WELL COVER GROUND SURFACE Figure No. Well Nos. N/A ~SURFACE SEAL --ANNULAR SEAL depth of sudace seal type of surface seal annular seal thickness type of annular seal Iow permeability seal thickness LOW PERMEABILITY SEAL type of Iow permeability seal diameter of well casing type of well casing GRAVEL PACK depth of top of gravel pack type of gravel pack 1 feet Neat cement I feet Neat cement 2 feet Bentonite chips 4 inches Sch. 40 PVC 4 feet Aquadum sand ~SCREEN depth of top of screen screen slot size 5 feet 0.02 inches 20 feet 10 inches 20 feet ~ BOTTOM WELL CAP HOLGUIN, FAHAN & ASSOCIATES, INC. (805) 391-0517 depth of well diameter of borehole depth of borehole 3157 Pegasus Drive Bakersfield, California 93308 VAPOR EXTRACTION WELL CONSTRUCTION DETAILS Client Name Project Name Site Address Date Completed Supervised by John M. McCauley California Sheet Metal 601 Eureka Street, Bakersfield, California November 1993 Mark R. Magar~lee, R.G. Figure No. Well Nos. N/A WELL COVER GROUND SURFACE TOP WELL CAP ~SURFACESEAL ANNULAR SEAL LOW PERMEABILITY SEAL WELL CASING GRAVEL PACK depth of surface seal type of surface seal annular seal thickness type of annular seal Iow permeability seal thickness type of Iow permeability seal diameter of well casing type of well casing depth of top of gravel pack type of gravel pack 2 feet Neat cement 2 feet Neat cement 3 feet Bentonite chips 4 inches Sch. 40 PVC 7 feet Aquadum sand ~SCREEN depth of top of screen screen slot size 10 feet 0.020 inches 40 feet 10 inches 40 feet ~ BOTTOM WELL CAP HOLGUIN, FAHAN & ASSOCIATES, INC. (805) 391-0517 depth of well diameter of borehole depth of borehole 3157 Pegasus Drive Bakersfield, California 93308 VAPOR EXTRACTION WELL CONSTRUCTION DETAILS Client Name Project Name Site Address Date Completed Supervised by John M. McCauley California Sheet Metal 601 Eureka Street, Bakersfield, California November 1993 Mark R. Ma~largee, R.G. WELL COVER GROUND SURFACE TOP WELL CAP Figure No. Well Nos. SURFACESEAL ANNULAR SEAL depth of surface seal type of sudace Seal annular seal thickness type of annular seal Iow permeability seal thickness LOW PERMEABILITY SEAL type of Iow permeability seal WELL CASING diameter of well casing type of well casing GRAVEL PACK depth of top of gravel pack type of gravel pack N/A 2 feet Neat cement 2 feet Neat cement 3 feet Bentonite chips 4 inches $ch. 40 PVC 7 feet Aquadum sand ~SCREEN depth of top of screen screen slot size 10 feet 0.020 inches 40 feet 10 inches 40 feet ~ BOTTOM WELL CAP HOLGIJ-[N, F~ & ASSOCI~,TES, INC. (805) 391-0517 depth of well diameter of borehole depth of borehole 3157 Pegasus Drive Bakersfield, California 93308 VAPOR EXTRACTION WELL CONSTRUCTION DETAILS Client Name Project Name Site Address Date Completed Supervised by John M. McCauley California Sheet Metal 601 Eureka Street, Bakersfield, Califomia November 1993 Mark R. Ma~)ar~lee, R.G. Figure No Well Nos. N/A WELL COVER GROUND SURFACE TOP WELL CAP --SURFACESEAL ~,N~INULAR SEAL WELL CASING GRAVEL PACK depth of surface seal type o! surface seal annular seal thickness type of annular seal Iow permeability seal thickness type of Iow permeability seal diameter of well casing type of well casing depth of top of gravel pack type of gravel pack 2 feet Neat cement 2 feet Neat cement 3 feet Bentonite chips 4 inches Sch. 40 PVC 7 feet Aquarium sand ~SCREEN depth of top of screen screen slot size 10 feet 0.020 inches 40 feet 10 inches 40 feet ~ BOTTOM WELL CAP HOLGUIN, FAHAN & ASSOCIATES, INC. (805) 391-0517 depth of well diameter of borehole depth of borehole 3157 Pegasus Drive Bakersfield, California 93308 HOLGUIN, FAHAN & ASSOCIATe, INC. ENVIRONMENTAL MANAGEMENT CONSULTANTS ATTACHMENT 3. VAPOR EXTRACTION TEST PROCEDURES VAPOR EXTRACTION TEST PROCEDURES VAPOR MONITORING EQUIPMENT MONITORING EQUIPMENT CONSTITUENT(S) MEASURED EFFECTIVE RANGE 1 - 2,000 ppm OVM Photoionization Detector volatile organic content (as isobutylene) Dwyer Magnahelic 0 - 0.25 inches of water Series 2000 subsurface vacuum 0 - 1.0 inches of water differential .pressure gauges 0 - 2.5 psi Davis Instruments turbometer emissions stack velocity 0 - 9,999 feet per minute Omega HHP-6150 differential pressure meter wellhead vacuum 0 - 200 inches of water 170 cfm maximum flow Sutorbilt Model 4HVL, 3 hp 160 inches water maximum vapor extraction blower not applicable vacuum Westates Model VSC-200 0-100 cfm flow 200 lbs activated carbon filters not applicable carbon capacity VARIABLE-RATE FLOW TEST A variable-rate flow test is conducted by connecting the positive displacement blower to the vapor extraction well. The wellhead vacuum is allowed to stabilize and then recorded on a vapor extraction test'recording log. An Omega Model HHP-6150 differential pressure meter Is used to monitor the wellhead vacuum from a port located on the vacuum side of the blower. A Davis Instruments electronic wind speed indicator (turbometer), a Dwyer Series 2000 differential pressure gauge, and a pitot tube are used to monitor the stack velocity at the outlet of the 2-inch, inside diameter (ID), emissions stack. The temperature of the emissions is also monitored at the outlet of the 2-inch ID stack. The stack velocity and temperature are then used to calculate the standard volumetric flow rate achieved with the blower. After recording the pressure-flow data at the initial conditions, the vacuum is Increased and the associate flow rate is monitored, allowed to stabilize, and recorded on the log. The procedure is repeated at regular intervals in order to develop a wellhead vacuum (WHV) versus flow rate curve for the extraction well. RADIUS OF INFLUENCE AND INTRINSIC SOIL PERMEABILITY The radius of influence (ROI) test is conducted by connecting the Roots vacuum blower to the well, operating the blower at three different flow rates as described in the variable-rate flow test, and monitoring the resultant subsurface vacuum at surrounding monitoring points using an Omega HHP-6150 differential pressure gauge. The subsurface and wellhead vacuums are monitored until they stabilize at each flow rate and then recorded on the vapor extraction test recording log. vaP~JlExtraction Test Procedures Page 2 HFA utilizes a graphical method for estimating the ROI that is based on a modification of the distance-drawdown method used in groundwater studies. A formula-based model patterned after Johnson et al.1 is used to determine the Intrinsic soil permeability and other characteristics of the vadose zone. The ROI at each WHV is graphically determined by plotting the subsurface vacuums measured in inches of water column (ins-water) by the log of the distance (r) away from the extraction well, A straight line is then drawn between the points and extended until it intercepts the Zero-vacuum axis. This is the distance at which the subsurface vacuums decrease to atmospheric pressure The effective ROI for the well is defined as the distance where 1 percent of the WHV is achieved. The intrinsic soil permeability (k) is determined through use of the Johnson equation.s as specified below, = (Qp/HrrPatm-P(w)) [Ln(Rw/ROI)/(1-(Patm/P(w))2)] Where: Patm : P(w) = ROI = Rw = k = © = /./ = H = Atmospheric pressure (1.01 3 x 106 g/cm-sec2) Pressure at the extraction well Radius of Influence of extraction well Radius of extraction well Intrinsic soil permeability Volumetric flow rate from extraction well Vapor viscosity (1.8 x 10-4 g/cm-sec) Length of slotted interval SOIL VAPOR CONCENTRATIOH During the vaPor extraction tests, extracted soil vapors are monitored for volatile organic compounds (VOCs) using a Thomas Model 2107 vapor sampling pump connected to the pressure side of the blower prior to treatment via carbon adsorption through two 200-pound activated carbon canisters placed in series. The VOCs of the extracted vapors are monitored using a photoionization detector (PID), The PID is calibrated to a 100 ppm isobutylene standard prior to commencing the test. Readings taken with the PID are used to provide a relative indication of VOCs within the extracted vapor stream. All constituents are monitored until stable flow conditions are achieved and then recorded on the vapor extraction test recording log. In addition to monitoring the extracted vapors with field instruments, samples of the extracted vapor stream will be collected from the extraction well(s) at the beginning and end of test. Laboratory samples are collected by connecting a 3-liter, TedlarTM bag to the sampling pump 'J Johnson, P.C., Kemblowski. M.W., and Colthart, J.D., "Quantitative Analysis for the Cleanup at Hydrocarbon- Contaminated Soils by In-Situ Soil Venting", Ground Water Vol. 28, No. 3, May - June 1990. Vap~-xtractlon Test Procedures Page 3 via TeflonTM tubing. Prior to collecting the samples from each well, soil vapors are monitored with the PID until VOCs in the vapor stream stabilize, The TedlarTM bag is labeled, sealed, and delivered to a California certified laboratory and analyzed for TPH, BTEX, and fixed gases using EPA Method TP-14 and TCD, respectively. HOLGUIN, FAHAN & ASSOCIATES, INC. ENVIRONMENTAL MANAGEMENT CONSULTANTS ATTACHMENT 4. BOREHOLE DRILLING AND SOIL SAMPLING PROCEDURES BOREHOLE DRILLING AND SOIL SAMPLING PROCEDURES SITING Soil borings will be positioned as noted in the work plan. TRUCK-MOUNTED DRILLING AND SOIL SAMPLING PROCEDURES Each borehole will be manually drilled for the first 4 feet in order to establish that the area is clear of subsurface structures. The borings will be advanced with 6-inch outside diameter, hollow-stem, flight augers to the depths noted in the work plan. During the drilling process, soil cuttings will be continuously monitored in accordance with the monitoring procedures, and data will be recorded on soil boring logs by a State of California registered geologist. Soil samples will be collected with a California split-spoon sampler at intervals consistent with the work plan. The sampler will be outfitted with 2.5-inch by 3-inch stainless steel or brass sleeves. When the sample is withdrawn, the ends of the sleeve will be covered with aluminum foil or TeflonTM tape followed by plastic caps. Sample preservation, handling, and transportation procedures will be consistent with HFA's Quality Assurance/Quality Control procedures. BOREHOLE MONITORING PROCEDURES Cuttings from soil borings will be continuously classified according to the Unified Soil Classification System (USGS) and logged by a State of California registered geologist. Specific geologic and hydrologic information that will be collected includes stratigraphy (i.e., layer thickness, unit correlation, aquifer thickness, depth to groundwater, and confining units, if any), relative permeability, observed porosity, plasticity, moisture content, soil type, structure, size, and other features that could affect contaminant transport. Specific geologic and hydrologic information that is obtained during borehole construction includes the following: * Stratigraphic characteristics: thickness, correlation of'units, extent (horizontal and vertical) of aquifers and confining units, if any; · Observed porosity; · Volatile organic content; · Particle-size distribution; · Moisture content; · Plasticity; · Strength; · Mineral composition; · Depth to groundwater; · Soil type, structure, size; and · Distribution of soil type. Borehole Drilling Sampling Procedures Page 2 The data will be recorded on individual soil boring logs, including observations regarding the types and quantities of waste materials encountered and any photoionlzation detector readings. This data will be recorded on a standardized log sheet in the Field Log Book. Specific information that will be recorded is listed in Table 1, below. TABLE 1. SOIL BORING LOG INFORMATION GENERAL Project name Borehole name/number Date started and finished Geologist's name Ddller"s name · Borehole location; map and elevation * Rig type (bit size/auger size) · Petrologic lithologic classification scheme used (Wentworth, USCS) · Sheet number INFORMATION COLUMNS Depth Sample location/number Photoionzation or Flame Ionization Detector Reading · Gradation · Narrative description * Soil Classification NARRATIVE DESCRIPTION Geologic Observations - Soil/rock type - Color and stain - Gross petrology - Friability - Degree of weathering - Particle shape - Particle Size - Depositional structures - Bedding - Fossils - Moisture content - Formational strike and dip - Organic content - Odor - Suspected contaminant - Discontinuities - Water-bearing zones Drilling Observations - Changes in drilling method - Readings from detection equipment (if any) - Drilling difficulties - Advance rates or equipment rig chatter - Caving/hole stability - Amounts and types of any liquids uSed - Water levels Other Remarks - Equipment failures - Possible contamination - Deviations from drilling plan - Weather All field logs will be typed and presented verbatim in an attachment of the report. The typed soil boring logs will be on a form identical to that used in the field log book. Each soil boring log includes a graphic log in which a symbol for each USCS soil group is included for each soil interval. Borehole Drilling Sampling Procedures Page 3 DATA REDUCTION The data compiled from the soil borings will be summarized and analyzed. A narrative summary of the soil characteristics will also be presented. The soil boring logs are checked for the following information: · Correlation of stratigraphic units among boreholes; · Identification of zones of potentially high hydraulic conductivity; · Identification of the confining formation/layer; · Indication of unusual/unpredicted geologic features (fault zones, fracture traces, facies changes, solution channels, buried stream deposits, cross-cutting structures, pinchout zones, etc.); and · Continuity of petrographic feolures such as sorting, groin-size distribution, cementation, etc. Borehole locations will be plotted on a properly scaled map. The purpose of each borehole/piezometer/monitoring well/pit/soil sample will be indicated on the map. Depending on the results of this analysis, the soil stratigraphy of the site is presented in a scaled stratigraphic column (if soil stratigraphy is laterally homogeneous) or, more likely, in a scaled cross section or a fence diagram (if soil is laterally heterogeneous). Specific features that may impact contaminant migration, e.g., fault zones or impermeable layers, are discussed in narrative form and supplemented with graphical presentations as deemed appropriate. DECONTAMINATION PROCEDURES Prior to each sampling episode, the sampling equipment will be decontaminated using a non-phosphate soap wash, a tap water rinse, and two deionized water rinses. The drill string will be decontaminated with a steam cleaner between each boring. HOLGUIN, FAHAN & ASSOCIATES, INC. ENVIRONMENTAL MANAGEMENT CONSULTANTS ATrACHMENT 5. HEALTH AND SAFETY PLAN HEALTH AND SAFETY PLAN FOR UNDERGROUND STORAGE TANK SITE REMEDIATIONS SITE-SPECIFIC INFORMATION Site Address : 601 Eureka Street, Bakersfield, California Name of Business Occupying Site : California Sheet Metal Owner Name : Mr, John M, McCauley Owner Contact : Mr, Gary J, Leafy BFDHMD Project Manager Mr, Ralph Huey FIELD ACTIVITIES AND GOALS OF THIS INVESTIGATION: Soil vapor extraction of gasoline-containing soils Tel, #: (805)635-3000 Tel, #: (805)326-3979 KNOWN HAZARDS AT THE SITE INCLUDE: Gasoline hydrocarbons KEY PERSONNEL AND RESPONSIBILITIES: NAME RESPONSIBILITIES Ken Mitchell (805)391-0517 SITE SAFETY OFFICER - Person primarily responsible for site safety, response operations, and protection of the public, Responsible for work site inspections to identify particular hazards and define site security, Mark Magargee, R.G. (805)391-0517 PROJECT MANAGER Person primarily responsible, for site characterization. The project manager delineates authority, coordinates activities and functions, and directs activities related to mitigative efforts of clean-up contractors. Ken Mitchell (805)391-0517 SITE INVESTIGATIVE PERSONNEL- Person responsible for actual field work including sampling, monitoring, equipment use, and other related tasks as defined by the project manager. ANTICIPATED WEATHER CONDITIONS FOR THIS AREA DURING THE PROJECT'S DURATION WILL BE: Temp, range : 70-90°F Humidity: 10-20% Ambient temp,: 80°F Potential for heat stress : High: Medium: X Low: ANTICIPATED PROTECTION LEVEL DURING THIS PROJECT* D* *Will be upgraded or downgraded to fit situations as they arise, EMERGENCY INFORMATION: All emergency calls : 911 Closest hospital with emergency room : Kern Medical Center 1830 Flower Street, Bakersfield, (805) 326-2000 Map Showing Route from Site to Hospital Attached? Yes: X No: HEALTH AND SAFETY PLAN FOR UNDERGROUND STORAGE TANK SlTE.REMEDIATIONS This document outlines Holguin, Fahan & Associates, Inc.'s (HFA) health and safety plan for Kern County underground storage tank (UST) site remediations, Site-specific information is provided on the cover page to this document. This health and safety plan was developed by HFA's industrial hygienist through consultation ct the following documents: · Occupational Safety & Health Administration (OSHA) 29 CFR 1910 -'"Hazardous Waste Operations and Emergency Response, Final Ruling," March 1989; · NIOSHIOSHAIUSCGIEPA "Occupational Safety and Health Guidance Manual for Hazardous Waste Site Activities," October 198,5; and · HFA's Corporate Standard Safety Program. This health and safety plan is divided into the following categories: 1. Job Hazard Assessment; 2. Exposure Monitoring Plan; 3. Personal Protective Equipment; 4. Work Zones and Security Measures; 5. Decontamination and Disposal; 6. Worker Training; and 7, Emergency Procedures. 1. JOB HAZARD ASSESSMENT Immediate tasks at any leaking UST site include an evaluation of any present or potential threat to public safety. Questions need to be answered regarding the dangers of significant vapor exposures and potential explosion hazards. POTENTIAL CHEI~IICAL HAZARDS The chemical components of gasoline that are the most dangerous to site workers are the volatile aromatics, benzene, toluene, ethylbenzene, x¥1ene and potentially, organic lead. Additionally, solvents such as 1,2-Dichlorobenzene and 1,2-Dichloroethane may also be used as cleaning solutions at service stations. The primary health risks associated with each of these chemicals are described below. Gasoline - Suspected human carcinogen. A threshold limit value (TLV) of 300 ppm or 900 mg/m3has been assigned to gasoline. This value of 300 ppm was assigned based on an average of 3 percent benzene (10 ppm TLV) in gasoline. Low-level inhalation exposure to gasoline can cause irritation to the eyes, nose, and respiratory system; headache; and nausea. Health and Safety Plan Page 2 Benzene - Suspected human carcinogen. A TLV of 10 ppm or 30 mg/m3 has been assigned to benzene. Benzene has a Iow odor threshold limit of 1,4 ppm, Low level inhalation exposure to benzene can cause irritation to the eyes, nose, and respiratory system; headache; and nausea, Toluene - A TLV OF 100 ppm or 375 mg/m3 has been assigned to toluene, Toluene has a Iow odor threshold limit of 2.1 ppm. Low level inhalation exposure to toluene can cause fatigue, weakness, confusion, and euphoria, Ethytbenzene - A TLV of 100 ppm or 435 mg/m3 has been assigned to ethylbenzene. Ethylbenzene has a Iow odor threshold limit of two ppm, Low level inhalation exposure to ethylbenzene can cause irritation to the eyes and mucous membranes. Xylene - A TLV or 100 ppm or 435 mg/m3 has been assigned to xylene, No Iow odor threshold limit has been established for xylene. Low level inhalation exposure to xylene can cause dizziness, excitement, and drowsiness. 1,2-Dichlorobenzene A TLV of 50 ppm or 306 mg/m3 has been assigned to 1,2-dichlorobenzene. 1,2-dichlorobenzene has a Iow odor threshold limit of 4.0 ppm. Acute vapor exposure can cause coughing, dizziness, and drowsiness, It may cause skin irritation, 1,2-Dichloroethane - A TLV of 200 ppm, No data is available concerning odor threshold. Acute vapor exposure can cause coughing, dizziness, and drowsiness. It may cause skin irritation, Tetraethyl Lead - A TLV of 0,1 mg/m3 has been assigned to tetraethyl lead. Tetraethyl lead is a colorless or red-dyed liquid at atmospheric conditions, No data is available concerning odor threshold. Acute vapor exposure can cause insomnia, delirium, coma, and skin irritation. POTENTIAL PI~¥SICAL ~IAZARDS Soil Vapor Ecxtraction - Dangerously high fuel vapor levels will be monitored using a lower explosive limit (LEL) meter. The presence of underground utilities are also of concern and the Underground Service Alert will be notified in advance of any drilling work for identification of all underground utilities in the immediate area. Gasoline hydrocarbons in the contaminated soils in the areas identified by Wilson and Associates and Piwarea Engineering will be extracted through vapor extraction wells, and treated on the surface using a thermal oxidation/catalytical conversion system, The gasoline hydrocarbons are destroyed at an efficiency of greater than 99 percent. Potential exposure to gasoline hydrocarbons during the vapor extraction process is very Iow, Health and Safety Plan Page 3 Sampling - Use of personal protective equipment will minimize the exposure of site investigations. Heat stress will be monitored by each individual and controlled through regular work breaks as outlined in the American Conference of Governmental Industrial Hygienists' TLV's for heat stress conditions. 2. EXPOSURE MONITORING PLAN Potential exposure hazards found at UST sites primarily include toxic airborne vapors from leaking UST's. The most dangerous airborne vapor likely to be encountered during a UST remediation is benzene. Gasoline vapor concentration levels will be monitored in the breathing zone with a photoionization detector (PID) calibrated to benzene. When the action level of 1,50 ppm (1/2 the TLV of gasoline) is detected in the breathing zone, respiratory protection will be required utilizing full-face or half-face respirators with organic vapor cartridges. Monitoring for combustible gases will also be performed using an LEL meter when vapor concentrations above 2,000 ppm are detected with the PID. The action level is 35 percent of the LEI_ for gasoline vapors or 4,500 ppm. If this level is attained or exceeded, the work party will be IMMEDIATELY withdrawn. 3. PERSONAL PROTECTIVE EQUIPMENT The level of protection during the site investigation will usually be level "D." Level "D" protective equipment includes coveralls, sal~ety boots, safety glasses, gloves, and hard hats if drilling or trenching operations are in .progress. Upgrading the protection level would be based on airborne benzene concentration levels equal to or exceeding the action level. An upgrade to level "C" protection would be required if the action level is equaled or exceeded. Additional equipment required for level "C" would be a full-face or half-face air purifying canister-equipped respirator and Tyvek suits with taped arm and leg seals. If the action level was met or exceeded (35 percent) for the LEL, work would cease until the vapor level was measured to be below :20 percent of the LEL. A fire extinguisher will be maintained on site. Decisions for workers' safety are based on a continual evaluation of existing or changing conditions, 4. WORK ZONES AND SECURITY MEASURES To facilitate a minimum exposure to dangerous toxic vapors and/or physical hazards, only authorized persons will be allowed on the job site. Work zones will be defined by HFA staff who Health and Safety Plan Page 4 will aisc be responsible for maintaining security within these zones. Only the minimum number of personnel necessary for the UST remediation will be present in the work zone. 5. DECONTAMINATION AND DISPOSAL HFA's standard operaling procedures establish practices that minimize contact with potentially contaminated materials. Decontamination procedures are utilized if there is suspected or known contamination of equipment, supplies, instruments, or any personnel surfaces, Soap and water will be utilized in removing contaminants from personnel surfaces as well as equipment and instruments. Contaminated washwater will be disposed of in accordance with procedures outlined in the Bakersfield Fire Department Hazardous Materials Division UST Local Oversight Program guidance document. 6. WORKER TRAINING All HFA employees working on the site will have had, at a minimum, the 40-hour required OSHA Training for Hazardous Waste Site Activities (29 CFR 1910, 120), which includes training in the use of personal protective equipment. Individualized respirator fit testing is required of all HFA employees working at the site. 7. EMERGENCY PROCEDURES HFA employees are trained in emergency first aid and emergency first aid provisions will be brought to the site. In event of overt personnel exposure (i.e., skin contact, inhalation, or ingestion), the victim will be transported to and treated at the closest hospital. SAN FRANCISCO STATE HIGHWAY COUNTY ROUTE NUMBER LOS ANGELES NOTE: HIGHWAYS ARE 1 PT. LINES KERN MEDICAL CENTER 1830 FLOWER STREET BAKERSFIELD, CALIFORNIA BAKERSFIELD ~ FLOWER STREET UJ CALIFORNIA SHEET METAL ~ o fl: CAUFORNIA SHEET METAL 601 EUREKA STREET BAKERSFIELD, CALIFORNIA HOSPITAL MAP i HOLGUIN, FAHAN 8[ ASSOCIATES, INC. HOLGUI , N & ASSOCIATES, INC. ENVIRONMENTAL MANAGEMENT CONSULTANTS 143 South Figueroa Street · Ventura, California 93001 853 West 17th Street * Costa Mesa, California 92627 3157 Pegasus Drive · Bakersfield, California 93308 (805) 652-0219 · FAX (805)652-0793 (714) 642-2660 · FAX (714)642-2544 (805) 391-0517 · FAX (805) 391-0826 November 15, 1993 Mr. John M. McCauley In Care of Patrick C. Carrick Byrum, Holland & Griffin Post Office Box 2348 Bakersfield, California 93303-2348 Subject: NOV ? 1993 By WORK PLAN SUPPLEMENT TO THE CORRECTIVE ACTION PLAN FOR THE INSTALLATION OF A VAPOR EXTRACTION SYSTEM AT CALIFORNIA SHEET METAL 601 EUREKA STREET, BAKERSFIELD, CALIFORNIA Dear Mr. McCouley: The following work plan outlines Holguin, Fahan & Associates, Inc.'s (HFA) proposed methodology for the remediation of gasoline-containing soils at the above referenced site. This work is required by the Bakersfield Fire Department Hazardous Materials Division (BFDHMD) Underground Storage Tank (UST) Local Oversight Program (LOP). HFA proposes to install and operate a vapor extraction system (YES) using a thermal oxidation/catalytic conversion unit, which will destroy gasoline vapors extracted from the contaminated soil using a positive displacement vacuum blower. HFA also proposes to conduct soil sampling to confirm that no hazardous concentrations of gasoline remain in the subsurface, Prepare a closure report, and provide your consultant with the results of sample collection, laboratory analysis, and other data for inclusion in his quarterly progress report. SITE DESCRIPTION: California Sheet Metal Is located at 601 Eureka Street in a commercial and light industrial district of the city of Bakersfield, California (see Figure 1 - Site Location Map). The site previously housed a single 550-gallon, gasoline UST (see Figure 2 - Plot Plan). The property owners are John M. and Deanna J. McCauley, 4297 Country Club Drive, Bakersfield, California, 93306. The consultant contact is Mark R. Magargee, Holguin, Fahan & Associates, Inc., 3157 Pegasus Drive, Bakersfield, California, 93308, (805) 391-0517. 2. SITE MAPS: Site maps are included as Figure 1 and Figure 2. ENVIRONMENTAL PLANNERS ® SCIENTISTS ® GEOLOGISTS AND ENGINEERS Contaminated Site Assessments * Real, Estate Audits * Site Remedialion * Hazardous Waste Management HOLGUIN, FAHAN & ASSOCIATES, INC. ENVIRONMENTAL MANAGEMENT CONSULTANTS Mr, John M, McCauley California Sheet Metal November 15, 1993 - Page ~2 TOPOGRAPHY, GEOLOGY, AND HYDROGEOLOGY: The site is located in the southern part of the Great Valley geomorphic province, The Great Valley is a north-south trending valley approximately 400 miles long by 50 miles wide, the southern portion of which is referred to as the San Joaquin Valley, The surface of the San Joaquin Valley is underlain by unconsolidated, Quaternary-aged, alluvial sediments. The alluvial sediments are underlain by older, predominantly lake bed deposits. These deposits lie unconformably on Miocene-Pliocene-aged marine sediments, which extend to crystalline basement at approximately 20,000 feet below ground level (BGL). Geologic deposits in the study area include Pleistocene-aged alluvial sediments of the Kern River Formation, which form a homocline dipping gently to the south. The deposits are alluvium consisting of poorly indurated and dissected fan deposits (California Division of Mines and Geology, 1964). The near surface alluvium consists of silty sands and fine-grained to coarse-grained sands, with intervals of finer-grained, sandy silts and minor clay. Subsurface material encountered during previous drilling at the site was alluvium to the total depth of each soil boring. The previous assessments at the site indicate a moderate to good permeability, silty-sand to well-graded sand section to a depth of approximately 90 feet BGL. The subject site is located on the eastern edge of the San Joaquin Valley and western flank of the southern Sierra Nevada. The Kern River drains a large area of the southern Sierra Nevada, including the highest part of the range at Mount Whitney. The modern river has cut a canYon north of the site and provides recharge for groundwater along its course. Sedimentary geologic formations observed at the surface and underlying the site were sourced by the Sierra Nevada and transported via the ancestral Kern River. Surface and groundwater in the San Joaquin Valley is derived predominantly from the Sierra Nevada mountain range to the east and is transported by five major rivers, the closest to the site being the Kern River. The depth to the regional unconfined aquifer is approximately 200 feet BGL beneath the site, and the groundwater gradient is to the south (Kern County Water Agency, 1992 Report on Water Conditions, Improvement District No. 4, February 1993). The nearest known occurrence of perched groundwater is 2 miles to the southwest at a depth of 20 feet BGL in the abandoned Kern River channel to the ancient Kern Lake bed (Kern County Water Agency, 1992 Water Supply Report, May 1993). HOLGUIN, FAHAN ASSOCIATES, INC. ENVIRONMENTAL MANAGEMENT CONSULTANTS Mr, John M, McCauley California Sheet Metal November 15, 1993- Page 3 In the region of the site, the Tertiary sedimentary .sequence, from top to bottom, is nonmarine Kern River Formation, nonmarine Chanac Formation, marine Santa Margarita Formation (possibly interfingering with Chanac Formation due to tentative correlation of type Santa Margarita Formation section west of the San Andreas fault), marine Round Mountain Silt, marine Olcese Sand, marine Freeman Silt, marine Jewett Sand and Pyramid Hill member, marine Vedder Sand, and nonmarine Walker Formation. Of these, only the Kern River, Chanac, and Santa Margarita Formations are important to the hydrogeology of the site. The Tertiary, nonmarine Kern River Formation is unconformably overlain by bouldery terrace deposits of Quaternary Older Alluvium, Two naturally occurring geologic units are present in the near surface within the site. The two natural units are the Tertiary (Miocene to Pliocene-aged) nonmarine Kern River Formation and the Quaternary (Pleistocene-aged) Older Alluvium. The Older Alluvium forms a thin terrace deposit lying unconformably on the Kern River Formation. Quaternary Older Alluvium: The alluvium is middle to lower Pleistocene age (Qoa2 of Bartow, 1984). The Older Alluvium is a flat lying terrace deposit approximately 5 to 10 feet thick, which overlies the erosional surface of the Kern River Formation. The Older Alluvium is comprised of very coarse material, with boulders to 50 centimeters (cra) in diameter. Clastic material composition includes granitic and dioritic crystalline rocks characteristic of the Sierra Nevada batholiths, quartzite characteristic of pre-batholithic rocks, and volcanic and related rocks such as andesite and dark siliceous agate typical of Neogene deposits of the Mojave desert. In some locations caliche rims have developed between clasts. Kern River Formation: The age of the Kern River Formation includes upper Miocene and Pliocene age, and possibly Pleistocene age. The Kern River Formation Is composed of interstratified fanglomeratic deposits and silty claystones. Within the fanglomerates are conglomerate beds with cobbles to 20 cm in diameter, and in some areas fanglomerate beds exhibit cross bedding 2,5 to 5 meters thick, The silty claystone beds, which would serve as Iow permeability barriers to vertical migration, are laterally continuous as much as several thousand feet, but are locally truncated by sandy fanglomerate units. Another important faclor in considering the potential for migration is the lack of secondary permeability within the Kern River Formation, as no secondary cracks, small faults, or gypsum veins are observed. Chanac Formation: The Chanac Formation of upper Miocene age is not exposed within the site area but outcrops in the cliffs northeast along the Kern River bluffs at Hart Park. It is a thinly bedded, chalky siltstone exhibiting many secondary cracks and gypsum veins. HOLGUIN, FAHAN & ASSC~IATES, INC. ENVIRONMENTAL MANAGEMENT CONSULTANTS Mr. John M. McCauley California Sheet Metal November 15, 1993 - Page 4 TANK HISTORY: California Sheet Metal contracted with Calpi, Inc., of Bakersfield, California, to remove the 550-gallon gasoline UST, dispenser, and associated underground product line on December 17, 1991. The tank was removed under BFDHMD UST LOP Permit #BP-O031. IDENTIFICATION AND ESTIMATED QUANTITY OF MATERIAL RELEASED: Gasoline fuel: unknown quantity released. PREVIOUS WORK: During the tank removal, soil samples were collected from 2 and 6 feet below the center of the tank cavity at the direction of Mr. Joe Dunwoody with the BFDHMD UST LOP. Concentrations of total petroleum hydrocarbons (TPH) as gasoline, and benzene, toluene, ethylbenzene, and total xylenes (BTEX) were detected in the soil samples (see Attachment 1, Table 1.1, for a summary of the tank removal soil sample analysis results), On March 19, 1992, six soil borings (B-1 through B-6) were drilled by Wilson and Associates, Inc., (W&A) in order to inspect the subsurface conditions and to determine whether soil and groundwater contamination was present beneath the site (see Figure 2). Concentrations of TPH as gasoline and BTEX were detected in soil samples to a depth of less than 75 feet BGL and less than 50 feet laterally from the former UST location (see Attachment 1, Table 1.2, for a summary of the preliminary W&A assessment soil sample analysis results). However, the lateral limits to the northwest and southeast were not delineated by the preliminary site characterization. Upon review of the preliminary site characterization, the BFDHMD UST LOP requested additional soils investigation to address these issues. On March 8, 1993, three soil borings (B-7 through B-9) were drilled by Piwarea Engineering, Inc,, (Piwarea) at the site (see Figure 2). The additional soils investigation showed that TPH as gasoline and BTEX concentrations were present to a depth of less than 7,5 feet BGL and less than 35 feet laterally from the former UST location (see Attachment 1, Table 1.3, for a summary of the expanded Piwarea assessment soil sample analysis results). STRATEGY AND PROCEDURES FOR CLEANUP OF THE KNOWN CONTAMINATION: The intent of this work plan is to take measures to reduce the concentrations in the gasoline-containing soil to below the action level of TPH as gasoline (100 mg/kg) as prescribed by the BFDHMD UST LOP. HFA proposes to accomplish this through the installation and operation of a VES. HOLGUIN, FAHAN & ASSOCIATES, INC. ENVIRONMENTAL MANAGEMENT CONSULTANTS Mr, John M, McCauley California Sheet Metal November 15, 1993 - Page 5 DESCRIPTION OF ALL WORK TO BE PERFORMED: Prior to any intrusive methods being conducted at the site, USA Underground Alert will be utilized to map out the underground structures. Based on the clearances obtained, HFA will site the vapor extraction wells In safe locations, 8.1 8.2 Remedial Action Permits: Prior to the installation and operation of the in-situ VES, permits must be obtained from the San Joaquin Valley Unified Air Pollution Control District - Southern Zone (SJVUAPCD-SZ), The application contains detailed engineering data on the proposed remedial system. Estimates used to establish design criteria will be presented, Design criteria will include radius of influence (ROI), lithologic parameters (i,e,, air permeability), hydrocarbon concentration in air stream, estimated pore volume turnover, treatment equipment specifications per permit requirements (i,e,, Authority to Construct (ATC) and Permit to Operate (PTO)], and an estimated time for cleanup. After receiving the ATC permit, a field trial (treatability study) of the system is required before the PTO can be issued. Vapor Extraction Well Installations: A total of six soil borings will be drilled as part of the installation of the VES (see Figure 2), Three soil borings (VW-1 through VW-3) will be drilled through the center of the area showing the greatest concentrations of gasoline hydrocarbons and completed as a vapor extraction well cluster. One of these soil borings (VW-1) will be drilled to a depth of 70 feet BGL and will be completed with 25 feet of slotted Well screen in such a way that the interval from 45 to 70 feet BGL will be accessed in the area of gasoline-containing soil. The second soil boring (VW-2) will be drilled to a depth of 45 feet BGL and will be completed with 25 feet of slotted well screen in such a way that the interval from 20 to 45 feet BGL will be accessed in the area of gasoline-containing soil, The third soil boring (VW-3) will be drilled to a depth of 20 feet BGL and will be completed with 15 feet of slotted well screen in such a way that the interval from 5 to 20 feet BGL will be accessed in the area of gasoline-containing soil. The other three soil borings (VW-3 through VW-5) will be positioned at locations designed to effectively remediate gasoline hydrocarbons in the lateral area of the vadose zone plume. Each soil boring will be drilled to a depth of 40 feet BGL and completed with 30 feet of slotted well screen in such a way that the interval from 10 to 40 feet BGL will be accessed. The six wells will be valved so as to be usable as inlet wells during the extraction phase to enhance air flow across the gasoline-impacted zone. Soil sampling will not be performed while drilling because the soil borings are positioned within an area that has previously undergone extensive sampling and laboratory analysis, HOLGUIN, FAHAN & ASSOCIATES, INC. ENVIRONMENTAL MANAGEMENT CONSULTANTS Mr. John M. McCauley California Sheet Metal November 15, 1993 - Page 6 Vapor extraction well construction details are anticipated to include the following: 4-inch diameter, PVC, slotted casing will be placed down the annulus of 10-inch diameter, hollow-stem augers. The screened interval will be limited to 30 feet in any well in order to create a maximum ROI and efficiently extract the hydrocarbons. Construction of the well above the screen to the ground surface will be 4-inch diameter, blank PVC casing. A filter pack will be placed in the annular space between the well screen and the soil boring wall. This filter pack will extend from the bottom of the soil boring to approximately 5 feet above the well screen. A 5-foot-thick bentonite seal will be installed at the top of the filter pack in order to prevent short circuiting to the surface. A cement/sand/bentonite slurry will be placed from the top of the bentonite seal to the ground surface. Each wellhead will be protected by a locking, water-tight, traffic grade well cover installed in concrete (see Attachment 2 for vapor extraction well construction details and Figure 3 - Piping Diagram). Vapor Extraction Test: Prior to obtaining the permit to operate the VES on a full-time basis, a treatability study will be necessary in order to collect data to demonstrate that the air flow from the effluent stack of the system does not present a health risk to employees or the adjacent residential neighborhood. A vapor extraction test will be conducted in order to determine the flow rate/vacuum characteristics of the subsurface soils, the ROI surrounding vapor extraction wells VW-1, VW-2, and VW-3, the average intrinsic soil permeability, and the hydrocarbon concentrations within the extracted vapors, The equipment used to conduct the test will include a 3-horsepower, Sutorbilt Model 4HVL, positive displacement blower capable of generating flow rates of up to 115 cubic feet per minute at a wellhead vacuum (WHY) of 110 inches of water column, and two Westates Carbon, Inc., Model VSC-200, activated-carbon filters to control volatile organic emissions to the atmosphere, System parameters will be monitored using various magnahelic vacuum gauges; pitot tube and turbometer flow gauges; and a photoionization detector. Specific test procedures and equipment are summarized in Attachment 3. Two vapor extraction tests are proposed using wells VW-2 and VW-3 as the extraction wells (see Figure 2). A step test will be conducted. This test is performed by extracting soil vapors at three different vacuums for a duration of approximately 20 minutes. Selected vacuum steps will be approximately one third of the maximum vacuum achieved by the blower. Flow rates and corresponding WHV's and subsurface vacuums will be monitored, and the data will be recorded on a vapor extraclion res1 recording Icg, The resu~ls HOLGUIN, FAHAN & ASSOCIATES, INC. ENVIRONMENTAL MANAGEMENT CONSULTANTS Mr. John M, McCauley California Sheet Metal November 15, 1993 - Page 7 8.4 8.5 test will be summarized graphically and in tabular form, and the information will be utilized to calculate an ROI for various flow rates and the intrinsic soil permeability of the vented zone. After the step test is performed, subsurface vacuums will be allowed to stabilize and a constant-rate flow test will be performed. The constant-rate flow test is generally performed at the maximum WHV achieved during the step test. Monitoring of subsurface vacuums in surrounding wells, system vacuums, flow rates, temperature, and volatile organic concentrations will be recorded o1 1-minute to 15-minute intervals throughout both tests, and all data will be recorded on a vapor extraction test recording log. The duration of. the constant-rate flow test will be approximately 2 hours for each vapor extraction well. Four vapor samples will be collected in TedlarTM bags and analyzed by a California state-certified laboratory for TPH as gasoline using DHS Draft Method and for BTEX using EPA Method TO-14. Samples will be collected at the beginning of each step test Interval and at the end of each constant-rate flow test interval from vapor extraction wells V W-2 and VW-3. Vapor Extraction System Operation and I¥1aintenance: The VES is designed for continuous operation, 24 hours a day, 7 days per week until the' concentration of gasoline hydrocarbons in the soil is reduced to less than the BFDHMD UST LOP recommended guidelines. The anticipated duration of the remediation phase of the project is 6 months from the beginning of the remediation. Volatile-hydrocarbon-laden vapors are extracted from the subsurface soil and are delivered to the VES by the induction action caused by the vacuum pump. A detailed description of the selected YES will be contained in the ATC permit application, which will also contain the results of the vapor extraction test. Verification Soil Sampling: After remediation appears to have advanced to a point that field measurements of the extracted vapors have reached a symbiotic level, then three verification soil borings will be advanced. One soil boring will be advanced to a depth of 70 feet BGL through the central area where the greatest original gasoline hydrocarbons had been observed. The other two soil borings will be advanced to depths of 50 feet BGL at locations to verify successful soil treatment laterally from the source of impaction. Based on field observations, approximately 18 soil samples will be analyzed for TPH as gasoline and for BTEX by a California state-certified laboratory. Analysis of these soil samples provides the post-treatment data necessary to verify that the concentrations of gasoline HOLGUIN, FAHAN & ASSOClATE , INC. ENVIRONMENTAL MANAGEMENT CONSULTANTS Mr, John M, McCauley California Sheet Metal November 15, 1993- Page 8 hydrocarbons in the subsurface no longer exceed the proposed action level of 100 mg/kg (see Attachment 4). 8.6 Equipment Decommissioning: Upon successful completion of the remediation and with the approval of the BFDHMD UST LOP, HFA will remove all of the surface equipment from the site, remove the piping connecting the wells with the treatment unit, and abandon the wells in accordance with BFDHMD UST LOP protocol. 8.7 Closure Report: Upon successful completion of the remediatlon, HFA will provide a closure report that details the remedial field activities, sample collection, analytical results, data analysis, conclusions, and HFA's recommendation that no further remedial activities are required. Certified laboratory reports and chain-of-custody documents will be included. WORK SCHEDULE: Work will begin within 2 weeks subsequent to acceptance of this work plan by the BFDHMD UST LOP and authorization from John M. McCauley. The BFDHMD UST LOP will be notified at least 48 hours before any on-site work commences. The waiting time for the SJVUAPCD-SZ to review the ATC permit application will likely be on the order of 1 month. Upon obtaining the ATC permit, the system can be installed within 1 month. After conducting the treatability study, another 1-month waiting period is Incurred prior to the SJVUAPCD-SZ's issuance of the PTO. Once remediation begins, HFA anticipates completion of the soil remediation within 6 months. Upon completion of the soil remediation and verification soil borings, a closure report will be provided to the BFDHMD UST LOP within 1 month. 10. SITE SAFETY PLAN: A health and safety plan developed by HFA's industrial hygienist for UST site remediations is Included in Attachment 5. Procedures for conducting all work are outlined in this plan, and site-specific information is provided on the cover page. All work will be accomplished in accordance with all regulatory requirements as defined by the State Water Resources Control Board's Leaking Underground Fuel Tank (LUFT) Field Manual and the BFDHMD UST LOP LUFT guidance documents. HOLGUIN, FAHAN & ASSOCIATES, INC. ENVIRONMENTAL MANAGEMENT (~ONSULTANTS Mr, John M, McCauley California Sheet Metal November 15, 1993 - Page 9 Holguin0 Fahan & Associates. Inc.. trusts that this work plan provides you with the information you require, If you have any questions or require additional information, please do not hesitate to call, Respectfully submitted, Kenneth J. Mitchell Assistant Geologist Holguin, Fahan & Associates, Inc. Mark R. Magargee, I~. /~ Senior Hydrogeologist Holguin, Fahan & Associates, Inc, MRM:ffm:kad Enclosures: Figure1 - Site Location Map Figure 2 - Plot Plan Figure3 - Piping Diagram Attachment 1 -- Summary Tables Attachment 2 Vapor Extraction Well Construction Details Attachment 3 Vapor Extraction Test Procedures Attachment 4 Attachment 5 Borehole Drilling and Soil Sampling Procedure~. Health and Safety Plan '~': No. 4892 . SITE LEGEND REVISON DATE: OCTOBER 15. 1993 KJM JOHN M. AND DEANNA J. McCAULEY CALIFORNIA SHEET METAL 601 EUREKA STREET BAKERSFIELD, CALIFORNIA FIGURE 1 - SITE LOCATION MAP HOLGUIN, FAHAN & ASSOCIATES, INC. ' ' ' E'RE~S'mEETv " SIDEWALK '"~ ~' ' CHAIN-LINK FENCE GATE F- CALIFORNIA r~ SHEET METAL z rr BUILDING CONCRETE SLAB \ , CANOPY ' \ ~^so.,N~-co~^,.,.~ ~ ' ...... ' , I}_, CHAIN LINK~ ~ ?' FENCE B-7 ALLEY · LEGEND JOHN M. AND DEANNA J. McCAULEY SCALE IN FEET CALIFORNIA SHEET METAL · BOREHOLE LOCATIONS -- B-4 ~ I 601 EUREKA STREET 0 10 2O BAKERSFIELD, CALIFORNIA FIGURE 2 - PLOT PLAN REVISON DATE; OCTOBER 28. 1993: KJM EUREKA ~TREET - SIDEWALK GATE CHAIN-LINK FENCE fl=. ~ CALIFORNIA SHEET METAL Z rr BUILDING CONCRETE SLAB \~ GATE VES CANOPY UNr[ LIMIT OF~ '~ ~. T~NK~^TION SOIL 'AINING.e ~ ~2 CHAIN-LINK ~ FENCE ALLEY ~GEND JOHN M, AND D~NNA J. M~AULEY ~E IN FE~ ~LIFORNIA SHE~ M~AL ~ BOREHOLE L~ATIONS ~~ ~1 EURE~ STRE~ ~4 0 10 ~ BAKERSFIELD, CALIFORNIA FIGURE 3 - PIPING DIAGRAM ~ VA~R E~RACTION ~LL LOCATIONS N- ,, REVlSON DATE: OCTOBER 28, 1993: KJM HOLGUIN, ~ FAHAN & ASSOCIATES, INC. ENVIRONMENTAL MANAGEMENT CONSULTANTS ATI'ACHMENT 1. SUMMARY TABLES TABLE 1.1 SUMMARY OF SOIL SAMPLE ANALYSIS RESULTS FROM THE DECEMBER 17, 1991 TANK PIT EXCAVATION SAMPLE TPH AS ETHYL- TOTAL NUMBER DEPTH GASOLINE BENZENE TOLUENE BENZENE XYLENES (feet BTB) (mg/kg) (mg/kg) (mg/kg) (mg/kg) (mg/kg) · MRL N/A 1 0.005 0.005 0.005 0.005 S-1 2 810 44 170 19 153 S-2 6 10,000 98 275 23 290 BTB = Below tank base. MRL = Minimum reporting level. N/A = Not applicable. TABLE 1.2 SUMMARY OF SOIL SAMPLE ANALYSIS RESULTS FROM WILSON & ASSOCIATES, INC.'S MARCH 19, 1992, ASSESSMENT BORING TPH AS ETHYL- TOTAL TOTAL ORGANIC NUMBER DEPTH GASOLINE BENZENE TOLUENE BENZENE XYLENES LEAD LEAD (feet BGL) (mg/kg) (mg/kg) (mg/kg) (mg/kg) (mg/kg) (mg/kg) (mg/kg) MRL N/A 1 0.005 0.005 0.005 0.005 2.5 0.5 B-1 5 6,000 N D {>20) 210 50 1,960 39 2.7 B-1 15 6,000 N D (>100) 390 170 1,290 .... B-1 30 3,100 N D (>2) 86 71 438 4.5 -- B-1 45 3,000 5 160 75 390 .... B-1 60 13,000 110 1 ~300 300 2,560 .... B-1 75 ND ND ND ND ND ND -- B-1 80 ND ND ND ND ND .... B-1 85 N D N D 0.047 N D 0.014 4.5 -- B-1 90 N D 0.084 0.16 0.049 0.088 .... B-2 15 12~000 1 ~000 1,500 340 2,480 - -- B-2 30 400 0.2 1.2 4.7 49 3.9 -- B-3 30 30,000 400 3~400 800 4~300 .... B-4 30 ND ND ND ND ND .... B-4 40 ND ND ND ND ND .... B-5 15 ND 0.011 0.017 ND ND .... B-5 40 7,000 42 540 160 810 .... B-6 20 ND ND ND. ND ND 3.6 -- B-6 30 ND ND ND: ND ND .... B-6 40 ND ND 0.008! ND 0.010 8.5 -- BGL = Below ground level. MRL = Minimum reporting level. N/A = Not applicable. N D = Not detected. -- = Not analyzed. Summary Tables Page 2 TABLE 1.3 SUMMARY OF SOIL SAMPLE ANALYSIS RESULTS FROM PIWAREA ENGINEERING, INC.'S MARCH 8, 1993, ASSESSMENT BORING TPH AS ETHYL- TOTAL NUMBER DEPTH GASOLINE BENZENE TOLUENE BENZENE XYLENES (feet BTB) (mg/kg) (m~/kg) (mg/kg) (mg/kg) (mg/kg) MRL N/A .1 0.005 0.005 0.005 0.005 B-7 20 ND ND ND ND ND B-7 30 ND~ ND ND ND ND B-7 50 N D 0.064 0.029 ~ N D 0.015 B-8 20 ND ND ND ND ND B-8 35 N D 0.079 0.11 N D 0.090 B-9 30 ND ND ND ND ND B-9 40 ND ND ND ND ND B-9 50 N D 0.11 0.027 N D 0.045 BTB = Below tank base. MRL = Minimum reporting level. N/A = Not applicable. N D = Not detected. HOLCJUIN, FAHAN & ~IATES, INC. ENVIRONMENTAL MANAGEMENT CONSULTANTS AI'i'ACHMENT 2. VAPOR EXTRACTION WELL CONSTRUCTION DETAILS VAPOR EXTRACTION WELL CONSTRUCTION DETAILS SITING Vapor extraction wells will be positioned as noted in work plan. DRILLING PROCEDURES Boreholes for installation of vapor extraction wells will be drilled with either ten or six-inch outside-diameter hollow-stem flight auger as specified in the work plan. Cuttings from the boreholes will be logged by an experience environmental geologist under the direct supervision of a California registered geologist. The soil will be classified according to the standard Unified Soil Classification System, Observations regarding the types and quantities of waste materials encountered and any photoionization detector readings will be logged. All data collected during the borings will be recorded on individual borehole logs, CONSTRUCTION MATERIALS The vapor extraction wells will be constructed of four-inch PVC casing. The screen length of slotted casing will be limited to $0 feet in each well. The design of the proposed wells will be according to Department of Health Services (DHS) and BFDHMD UST LOP guidance manuals. The specifications are listed in the following table. VAPOR EXTRACTION WELL SPECIFICATIONS Casing Size: Four-inch inside diameter, Casing Materials: Sch. 40 PVC, Filter Pack: Washed aquarium sand extending no more than five feet above the well screen, Sealant: 'Fve feet of sodium bentonite immediately over the filter pack. Cement and bentonite mixture used as annular sealant from the top of the bentonite seal to the ground surface (two to five percent bentonite by weight). Well Covers: 12-inch diameter locking aluminum access covers, Screen Length: 30 feet of 0.03 inch slotted well screen, Well Construction Details Page 2 DOCUMENTATION REQUIREMENTS All well design and construction completed during the investigation will be documented with the following information: · Date/.time ct construction; · Drilling method: · Well location (+_0.5 feet); · Well depth (+_0.1 foot); · Drilling and lithologic logs: · Casing material; · Screen material and design; · Casing and screen joint size; * Type of protective cap; · Detailed drawing of well; · Well cap elevation (+_0.5 feet); · Top of casing elevation (+_0.01 foot); · Screen slot size/length; , Filter pack material and size; , Filter pack placement method: · Sealant materials; · Sealant volume: · Sealant placement method; · Surface seal design/construction; · Borehole diameter and well casing diameter; and · Relative ground surface elevations (+_0.01 ft). VAPOR EXTRACTION WELL CONSTRUCTION DETAILS Client Name Project Name Site Address Date Completed Supervised by John M. McCauley Califomia Sheet Metal 601 Eureka Street, Bakersfield, California November 1993 Mark R. Magargee, R.G. Figure No. Well Nos. WELL COVER GROUND SURFACE TOP WELL CAP ~SURFACE SEAL ~ANNULAR SEAL LOW PERMEABILITY SEAL GRAVEL PACK depth of surface seal type of surface seal annular seal thickness type of annular seal Iow permeability seal thickness type of Iow permeability seal diameter of well casing type of well casing depth of top of gravel pack type of gravel pack 5 feet Neat cement 3O feet Neat cement 5 feet Bentonite chips 4 inches Sch. 40 PVC 40 feet Aquarium sand --SCREEN depth of top of screen screen slot size 45 feet 0.02 inches 70 feet 10 inches 70 feet ~ BOTTOM WELL CAP HOLGUIN, FAHAN & ASSOCIATES, INC. (805) 391-0517 depth of well diameter of borehole depth of borehole 3157 Pegasus Drive Bakersfield, California 93308 VAPOR EXTRACTION WELL CONSTRUCTION DETAILS Client Name Project Name Site Address Date Completed Supervised by John M. McCaule¥ California Sheet Metal 601 Eureka Street, Bakersfield, California November 1993 Mark R. Ma~ar~lee, R.G. Figure No. Well Nos. N/A WELL COVER GROUND SURFACE TOP WELL CAP SURFACE SEAL ANNULAR SEAL LOW PERMEABILITY SEAL WELL CASING PACK depth of sudace seal type of surface seal annular seal thickness type of annular seal Iow permeability seal thickness type of Iow permeability seal diameter of well casing type of well casing depth of top of gravel pack type of gravel pack 5 feet Neat cement 5 feet Neat cement 5 feet Bentonite chips 4 inches Sch. 40 PVC 15 feet Aquarium sand ~SCREEN depth of top of screen screen slot size 20 feet 0.02 inches 45 feet 10 inches 45 feet ~ BOTTOM WELLCAP HOLGUIN, FAHAN & ASSOCIAT]~S, INC. (805) 391-O517 depth of well diameter of borehole depth of borehole 3157 Pegasus Drive Bakersfield, California 93308 VAPOR EXTRACTION WELL CONSTRUCTION DETAILS Client Name Project Name Site Address Date Completed Supervised by John M. McCauley California Sheet Metal 601 Eureka Street, Bakersfield, California November 1993 Mark R. Magargee, R.G. WELL COVER GROUND SURFACE TOP WELL CAP Figure No Well Nos. SURFACE SEAL ~ANNULAR SEAL depth of sudace seal type of surface seal annular seal thickness type of annular seal Iow permeability seal thickness LOW PERMEABILITY SEAL type of Iow permeability seal WELL CASING diameter of well casing type of well casing GRAVEL PACK depth of top of gravel pack type of gravel pack N/A I feet Neat cement 1 feet Neat cement 2 feet Bentonite chips, 4 inches Sch. 40 PVC 4 feet Aquadum sand depth of top of screen screen slot size 5 feet 0.02 inches 20 feet 10 inches 20 feet ~ BO'I-rOM WELLCAP HOLGUIN, FAHAN & ASSOCIATES, INC. (805) 391-0517 depth of well diameter of borehole depth o! borehole 3157 Pegasus Drive Bakersfield, California 93308 VAPOR EXTRACTION WELL CONSTRUCTION DETAILS Client Name Project Name Site Address Date Completed Supervised by John M. McCauley California Sheet Metal 601 Eureka Street, Bakersfield, Califomia November 1993 Mark R. Ma~argee, R.G. WELL COVER GROUND SURFACE TOP WELL CAP Figure No. Well Nos. SURFACESEAL ~ANNULAR SEAL depth of surface seal type of surface seal annular seal thickness type of annular seal Iow permeability seal thickness LOW PERMEABILITY SEAL type of Iow permeability seal WELL CASING -diameter of well casing type of well casing GRAVEL PACK depth of top of gravel pack type of gravel pack 2 feet Neat cement 2 feet Neat cement 3 feet Bentonite chips 4 inches $ch. 40 PVC 7 feet Aquarium sand --SCREEN depth of top of screen screen slot size 10 feet 0.020 inches 40 feet 10 inches 40 feet ~ BOTTOM WELL CAP HOLGUIN. FAHAN 8[ ASSOCIA'I'F_,S, INC. (805) 391-0517 depth of well diameter of borehole depth of borehole 3157 Pegasus Drive Bakersfield, California 93308 VAPOR EXTRACTION WELL CONSTRUCTION DETAILS Client Name Project Name Site Address Date Completed Supervised by John M. McCauley California Sheet Metal 601 Eureka Street, Bakersfield, California November 1993 Mark R. Macjar~lee, R.G. Figure No., Well Nos. N/A VVELL COVER GROUND SURFACE TOP WELL CAP · : :. SURFACE SEAL N~INULAR SEAL LOW PERM E. ABILITY SEAL WELL CASING depth of surface seal type of surface Seal annular seal thickness type of annular seal Iow permeability seal thickness type of Iow permeability seal diameter of well casing type of well casing depth of top of gravel pack type of gravel pack 2 feet Neat cement 2 feet Neat cement 3 feet Bentonite chips 4 inches Sch. 40 PVC 7 feet Aquadum sand --SCREEN depth of top of screen screen slot size 10 feet 0.020 inches 40 feet 10 inches 40 feet -- BOTTOM WELL CAP t[o~mN, ~ & ~.ssocu~s, ~c. (805) 391-0517 depth of well diameter o! borehole depth of borehole 3157 Pegasus Drive Bakersfield, California 93308 VAPOR EXTRACTION WELL CONSTRUCTION DETAILS Client Name Project Name Site Address Date Completed Supervised by John M. McCauley California Sheet Metal 601 Eureka Street, Bakersfield, California November 1993 Mark R. Macjarcjee, R.G. Figure No. Well Nos. N/A WELL COVER GROUND SURFACE TOP WELL CAP SURFACESEAL ANNULAR SEAL depth of surface seal type of surface seal annular seal thickness type of annular seal Iow permeability seal thickness LOW PERMEABILITY SEAL type of IOW permeability seal WELL CASING diameter of well casing type of well casing GRAVEL PACK depth of top of gravel pack type of gravel pack 2 feet Neat cement 2 feet Neat cement 3 feet Bentonite chips 4 inches Sch. 40 PVC 7 feet AquarJum sand ~SCREEN depth of top of screen screen slot size 10 feet 0.020 inches 40 feet 10 inches 40 feet ~ BOTTOM WELL CAP HOLGUIN, FAHAN & ASSOCIATES, INC. (805) 391-0517 depth of well diameter o! borehole depth of borehole 3157 Pegasus Drive Bakersfield, California 93308 HOLGUIN, FAHAN & ASSOC~T~, INC. ENVIRONMENTAL MANAGEMENT CONSULTANTS ATTACHMENT 3. VAPOR EXTRACTION TEST PROCEDURES VAPOR EXTRACTION TEST PROCEDURES VAPOR MONITORING EQUIPMENT MONITORING EQUIPMENT CONSTITUENT(S) MEASURED EFFECTIVE RANGE 1 - 2,000 ppm OVM Photoionization Detector volatile organic content (as isobutylene) Dwyer Magnahelic 0 - 0.25 inches of water Series 2000 subsudaCe vacuum 0 - 1.0 inches of water differential pressure gauges . 0 - 2.5 psi Davis Instruments turbometer emissions stack velocity 0 - 9,999 feet per minute Omega HHP-6150 differential pressure meter wellhead vacuum 0 - 200 inches of water 170 cfm maximum flow Sutorbilt Model 4HVL, 3 hp 160 inches water maximum vapor extraction blower not applicable vacuum Westates Model VSC-200 0-100 cfm flow 200 lbs activated carbon filters not applicable carbon capacity VARIABLE-RATE FLOW TEST A variable-rate flow test is conducted by connecting the positive displacement blower to the vapor extraction well, The wellhead vacuum is allowed to stabilize and then recorded on a vapor extraction test recording log, An Omega Model HHP-6150 differential pressure meter Is used to monitor the wellhead vacuum from a port located on the vacuum side of the blower. A Davis Instruments electronic wind speed indicator (turbometer), a Dwyer Series 2000 differential pressure gauge, and a pitot tube are used to monitor the stack velocity at the outlet of the 2-inch, inside diameter (ID), emissions stack. The temperature of the emissions is also monitored at the outlet of the 2-inch ID stack. The stack velocity and temperature are then used to calculate the standard volumetric flow rate achieved with the blower, After recording the pressure-flow data at the initial conditions, the vacuum is Increased and the associate flow rate is monitored, allowed to stabilize, and recorded on the log. The procedure is repeated at regular intervals in order to develop a wellhead vacuum (WHV) versus flow rate curve for the extraction well. RADIUS OF INFLUENCE AND INTRINSIC SOIL PERMEABILITY The radius of influence (ROI) test is conducted by connecting the Roots vacuum blower to the well, operating the blower at three different flow rates as described in the variable-rate flow test, and monitoring the resultant subsurface vacuum at surrounding monitoring points using an Omega HHP-6150 differential pressure gauge. The subsurface and wellhead vacuums are monitored until they stabilize at each flow rate and then recorded on the vapor extraction test recording log, Vapoi~'~xtraction Test Procedures Page 2 HFA utilizes a graphical method for estimating the ROI that is based on a modification of the distance-drawdown method used in groundwater studies, A formula-based model patterned after Johnson et al.1 is used to determine the intrinsic soil permeability and other characteristics of the vadose zone. The ROI at each WHV is graphically determined by plotting the subsurface vacuums measured in inches of water column (ins-water) by the log of the distance (r) away from the extraction well, A straight line is then drawn between the points and extended until it intercepts the Zero-vacuum axis. This is the distance at which the subsurface vacuums decrease to atmospheric pressure The effective ROI for the well is defined as the distance where 1 percent of the WHV is achieved, The intrinsic soil permeability (k) is determined through use of the Johnson equation.s as specified below. k = (Q/.//HT~Patm-P(w)) [Ln(Rw/ROI)/(1-(Patm/P(w))2]] Where: Patm P(w) ROI Rw k © p H Atmospheric pressure (1.013 x 106 g/cm-sec2) Pressure at the extraction well Radius of influence of extraction well Radius of extraction well Intrinsic soil permeability Volumetric flow rate from extraction well Vapor viscosity (1.8 x 10-4 g/cm-sec) Length of slotted interval SOIL VAPOR CONCENTRATION During the vapor extraction tests, extracted soil vapors are monitored for volatile organic compounds (VOCs) using a Thomas Model 2107 vapor sampling pump connected to the pressure side of the blower prior to treatment via carbon adsorption through two 200-pound activated carbon canisters placed in series. The VOCs at the extracted vapors are monitored using a photoionization detector (PID), The PID is calibrated to a 100 ppm isobutylene standard prior to commencing the test, Readings taken with the PID are used to provide a relative indication of VOCs within the extracted vapor stream. All constituents are monitored until stable flow conditions are achieved and then recorded on the vapor extraction test recording log, In addition to monitOring the extracted vapors with field instruments, samples of the extracted vapor stream will be collected from the extraction well(s) at the beginning and end of test, Laboratory samples are collected by connecting a 3-liter, TedlarTM bag to the sampling pump 1 Johnson, P.C., Kemblowski, M.W., and Colthart, J.D., "Quantitative Analysis for the Cleanup of Hydrocarbon- Contaminated Soils by In-Situ Soil Venting", Ground Water Vol. 28, No. 3, May -June 1990. Vapotxtraction Test Procedures Page 3 via TeflonTM tubing. Prior to collecting the samples from each well, soil vapors are monitored with the PID until VOCs in the vapor stream stabilize. The TedlarTM bag is labeled, sealed, and delivered to a California certified laboratory and analyzed for TPH, BTEX, and fixed gases using EPA Method TP-14 and TCD, respectively. HOLGUIN, FAHAN & A.SSC~IATES, INC. ENVIRONMENTAL MANAGEMENT CONSULTANTS ATTACHMENT 4. BOREHOLE DRILLING AND SOIL SAMPLING PROCEDURES BOREHOLE DRILLING AND SOIL SAMPLING PROCEDURES SITING Soil borings will be positioned as noted in the work plan. TRUCK-MOUNTED DRILLING AND SOIL SAMPLING PROCEDURES Each borehole will be manually drilled for the first 4 feet in order to establish that the area is clear of subsurface structures. The borings will be advanced with 6-inch outside diameter, hollow-stem, flight augers to the depths noted in the work plan. During the drilling process, soil cuttings will be continuously monitored in accordance with the monitoring procedures, and data will be recorded on soil boring logs by a State of California registered geologist. Soil samples will be collected with a California split-spoon sampler at intervals consistent with the work plan. The sampler will be outfitted with 2.5-inch by 3-inch stainless steel or brass sleeves. When the sample is withdrawn, the ends of the sleeve will be covered with aluminum foil or TeflonTM tape followed by plastic caps. Sample preservation, handling, and transportation procedures will be consistent with HFA's Quality Assurance/Quality Control procedures. BOREHOLE MONITORING PROCEDURES Cuttings from soil borings will be continuously classified according to the Unified Soil Classification System (USCS) and logged by a State of California registered geologist. Specific geologic and hydrologic information that will be collected includes stratigraphy (i.e., layer thickness, unit correlation, aquifer thickness, depth to groundwater, and confining units, if any), relative permeability, observed porosity, plasticity, moisture content, soil type, structure, size, and other features that could affect contaminant transport. Specific geologic and hydrologic information that is obtained during borehole construction includes the following: · Stratigraphic characteristics: thickness, correlation of units, extent (horizontal and vertical) of aquifers and confining units, if any; · Observed porosity; · Volatile organic content; · Particle-size distribution; · Moisture content; · Plasticity; · Strength; · Mineral composition; · Depth to groundwater; · Soil type, structure, size; and · Distribution of soil type. Borehole Drilling Sampling Procedures. Page 2 The data will be recorded on individual soil boring logs, including observations regarding the types and quantities of waste materials encountered and any photoionlzation detector readings. This data will be recorded on a standardized log sheet in the Field Log Book. Specific information that will be recorded is listed In Table 1, below. TABLE 1. SOIL BORING LOG INFORMATION GENERAL Project name Borehole name/number Date started and finished Geologist's name Driller's name · Borehole location; map and elevation · Rig type (bit size/auger size) · Petrologic lithologic classification scheme used (Wentworth, USCS] · Sheet number INFORMATION COLUMNS T Depth · Sample location/number · Photoionzation or Flame Ionization Detector Reading · Gradation · Narrative description · Soil Classification NARRATIVE DESCRIPTION Geologic Observa~tions - Soil/rock type - Color and stain - Gross petrology - Friability - Degree of weathering - Particle shape - Particle Size - Depositional structures - Bedding - Fossils - Moisture content - Formational strike and dip - Organic content - Odor - Suspected contaminant - Discontinuities - Water-bearing zones Drilling Observations - Changes in drilling method - Readings from detection equipment (if any) - Drilling difficulties - Advance rates or equipment rig chatter - Caving/hole stability - Amounts and types of any liquids used - Water levels Other Remarks - Equipment failures - Possible contamination - Deviations from drilling plan - Weather All field logs will be typed and presented verbatim in an attachment of the report, The typed soil boring logs will be on a form identical to that used in the field log book. Each soil boring log includes a graphic log in which a symbol for each USCS soil group is included for each soil interval. Borehole Drilling Sampling Procedures Page 3 DATA REDUCTION The data compiled from the soil borings will be summarized and analyzed. A narrative summary of the soil characteristics will also be presented. The soil boring logs are checked for the following information: · Correlation of stratigraphic units among bofeholes; · Identification of zones of potentially high hydraulic conductivity', · Identification of the confining formation/layer: · Indication of unusual/unpredicted geologic features (fault zones, fracture traces, facies changes, solution channels, buried stream deposits, cross-cutting structures, pinchout zones, etc.); and · Continuity of petrographic features such as sorting, grain-size distribution, cementation, etc. Borehole locations will be plotted on a properly scaled map. The purpose of each borehole/piezometer/monitoring well/pit/soil sample will be indicated on the map. Depending on the results of this analysis, the soil stratigraphy of the site is presented in a scaled stratigraphic column (if soil stratigraphy is laterally homogeneous) or, more likely, in a scaled cross section or a fence diagram (if soil is laterally heterogeneous). Specific features that may impact contaminant migration, e.g., fault zones or impermeable layers, are discussed in narrative form and supplemented with graphical presentations as deemed appropriate, DECONTAMINATION PROCEDURES Prior to each sampling episode, the sampling equipment will be decontaminated using a non-phosphate soap wash, a tap water rinse, and two deionized water rinses. The drill string will be decontaminated with a steam cleaner between each boring. HOLGUIN, FAHAN & A.SSC~IATES, INC. ENVIRONMENTAL MANAGEMENT CONSULTANTS Alq'ACHMENT 5. HEALTH AND SAFETY PLAN HEALTH AND SAFETY PLAN FOR UNDERGROUND STORAGE TANK SITE REMEDIATIONS SITE-SPECIFIC INFORMATION Site Address : 601 Eureka Street, Bakersfield, California Name of Business Occupying Site : California Sheet Metal Owner Name : Mr. John M, McCauley Owner Contact : Mr, Gary J. Leary BFDHMD Project Manager Mr. Ralph Huey FIELD ACTIVITIES AND GOALS OF THIS INVESTIGATION: Soil vapor extraction of gasoline-containing soils Tel. #: (805)635-3000 Tel. #: (805)326-3979 KNOWN HAZARDS AT THE SITE INCLUDE: Gasoline hydrocarbons KEY PERSONNEL AND RESPONSIBILITIES: NAME RESPONSIBILITIES Ken Mitchell (805)391-0517 SITE SAFETY OFFICER - Person primarily responsible for site safety, response operations, and protection of the public. Responsible for work site inspections to identify particular hazards and define site security. Mark Magargee, R.G. (805)391-0517 PROJECT MANAGER - Person primarily responsible for site characterization. The project manager delineates authority, coordinates activities and functions, and directs activities related to mitigative efforts of clean-up contractors. Ken Mitchell (805)391-0517 SITE INVESTIGATIVE PERSONNEL- Person responsible for actual field work including sampling, monitoring, equipment use, and other related tasks as defined by the project manager. ANTICIPATED WEATHER CONDITIONS FOR THIS AREA DURING THE PROJECT'S DURATION WILL BE: Temp. range : 70-gO°F Humidity: 10-20% Ambient temp.: 8:)°F Potential for heat stress : High: Medium: X Low: ANTICIPATED PROTECTION LEVEL DURING THIS PROJECT* D* *Will be upgraded or downgraded to tit situations as they arise. EMERGENCY INFORMATION: All emergency calls : 911 Closest hospital with emergency room : Kern Medical Center 1830 Flower Street, Bakersfield, (805) 326-2000 Map Showing Route from Site to Hospital Attached? Yes: X No: HEALTH AND SAFETY PLAN FOR UNDERGROUND STORAGE TANK SITE REMEDIATIONS This document outlines Holguin, Fahan & Associates, Inc.'s (HFA) health and safety plan for Kern County underground storage tank (UST) site remediations. Site-specific information is provided on the cover page to this document. This health and safety plan was developed by HFA's industrial hygienist through consultation of the following documents: · Occupational Safety & Health Administration (OSHA) 29 CFR 1910 - "Hazardous Waste Operations and Emergency Response, Final Ruling," March 1989; · NIOSH/OSHA/USCG/EPA "Occupational Safety and Health Guidance Manual for Hazardous Waste Site Activities," October 198,5; and · HFA's Corporate Standard Safety Program, This health and safety plan is divided into the following categories: 1. Job Hazard Assessment; 2. Exposure Monitoring Plan; 3. Personal Protective Equipment; 4. Work Zones and Security Measures; 5. Decontamination and Disposal; 6. Worker Training; and 7. Emergency Procedures. 1. JOB HAZARD ASSESSMENT Immediate tasks at any leaking UST site include an evaluation of any present or potential threat to public safety. Questions need to be answered regarding the dangers of significant vapor exposures and potential explosion hazards. POTENTIAL CHEMICAL HAZARDS The chemical components of gasoline that are the most dangerous to site workers are the volatile aromatics, benzene, toluene, ethylbenzene, xylene and potentially, organic lead. Additionally, solvents such as 1,2-Dichlorobenzene and 1,2-Dichloroethane may also be used as cleaning solutions at service stations. The primary health risks associated with each of these chemicals are described below. Gasoline - Suspected human carcinogen. A threshold limit value (TLV) of 300 ppm or 900 mg/m3 has been assigned to gasoline. This value of 300 ppm was assigned based on an average of 3 percent benzene (10 ppm TLV) in gasoline. Low-level inhalation exposure to gasoline can cause irritation to the eyes, nose, and respiratory system; headache; and nousea, Health and Safety Plan Page 2 .Benzene - Suspected human carcinogen, A TLV of 10 ppm or 30 mg/m3 has been assigned to benzene, Benzene has a tow odor threshold limit of 1,4 ppm, Low level inhalation exposure to benzene can cause irritation to the eyes, nose. and respiratory system; headache; and nausea, Toluene - A TLV OF 100 ppm or 375 mg/m3 has been assigned to toluene, Toluene has a Iow odor threshold limit of 2.1 ppm, Low level inhalation exposure to toluene can cause fatigue, weakness, confusion, and euphoria, Ethylbenzene ~ A TLV of 100 ppm or 435 rog/m3 has been assigned to ethylbenzene, Ethylbenzene has a Iow odor threshold limit of two ppm. Low level inhalation exposure to ethylbenzene can cause irritation to the eyes and mucous membranes. Xylene - A TLV or 100 ppm or 435 mg/m3 has been assigned to xylene, No Iow odor threshold limit has been established for xylene. Low level inhalation exposure to xylene can cause dizziness, excitement, and drowsiness, 1,2-Dichlorobenzene A TLV of 50 ppm or 306 mg/m,~ has been assigned to 1,2-dichlorobenzene. 1,2-dichlorobenzene has a Iow odor threshold limit of 4,0 ppm. Acute vapor exposure can cause coughing, dizziness, and drowsiness, It may cause skin irritation, 1,2-Dichloroethane - A TLV of 200 ppm. No data is available concerning odor threshold. Acute vapor exposure can cause coughing, dizziness, and drowsiness. It may cause skin irritation, Tetraethyl Lead - A TLV of 0.1 mg/m3has been assigned to tetraethyl lead. Tetraethyl lead is a colorless or red-dyed liquid at atmospheric conditions, No data is available concerning odor threshold. Acute vapor exposure can cause insomnia, delirium, coma, and skin irritation. POTENTIAL PHYSICAL HAZARDS Soil Vapor Ecxtraction - Dangerously high fuel vapor levels will be monitored using a lower explosive limit (LEL) meter. The presence of underground utilities are also of concern and the Underground Service Alert will be notified in advance of any drilling work for identification of all underground utilities in the immediate area. Gasoline hydrocarbons in the contaminated soils in the areas identified by Wilson and Associates and Piwarea Engineering will be extracted through vapor extraction wells, and treated on the surface using a thermal oxidation/catalytical conversion system, The gasoline hydrocarbons are destroyed at an efficiency of greater than 99 percent. Potential exposure to gasoline hydrocarbons during the vapor extraction process is very Iow, Health and Safety Plan Page 3 Sampling - Use of personal protective equipment will minimize the exposure of site investigations, Heat stress will be monitored by each individual and controlled through regular work breaks as outlined in the American Conference of Governmental Industrial Hygienists' TLV's for heat stress conditions. 2. EXPOSURE MONITORING PLAN Potential exposure hazards found at UST sites primarily include toxic airborne vapors from leaking UST's. The most dangerous airborne vapor likely to be encountered during a UST remediation is benzene. Gasoline vapor concentration levels will be monitored in the breathing zone with a photoionization detector (PID) calibrated to benzene. When the action level of 150 ppm (1/2 the TLV of gasoline) is detected in the breathing zone, respiratory protection will be required utilizing full-face or half-face respirators with organic vapor cartridges, Monitoring for combustible gases will also be performed using an LEL meter when vapor concentrations above 2,000 ppm are detected with the PID. The action level is 35 percent of the LEL for gasoline vapors or 4,500 ppm. If this level is attained or exceeded, the work party will be IMMEDIATELY withdrawn. 3. PERSONAL PROTECTIVE EQUIPMENT The level of protection during the site investigation will usually be level "D." Level "D" protective equipment includes coveralls, safety boots, safety glasses, gloves, and hard hats if. drilling or trenching operations are in progress. Upgrading the protection level would be based on airborne benzene concentration levels equal to or exceeding the action level. An upgrade to level "C" protection would be required if the action level is equaled or exceeded. Additional equipment required for level "C" would be a full-face or half-face air purifying canister-equipped respirator and Tyvek suits with taped arm and leg seals. If the action level was met or exceeded (35 percent) for the LEL, work would cease until the vapor level was measured to be below 20 percent of the LEL. A fire extinguisher will be maintained on site. Decisions for workers' safety are based on a continual evaluation of existing or changing conditions. 4. WORK ZONES AND SECURITY MEASURES To facilitate a minimum exposure to dangerous toxic vapors and/or physical hazards, only authorized persons will be allowed on the job site. Work zones will be defined by HFA staff who Health and Safety Plan Page 4 will also be responsible for maintaining security within these zones. Only the minimum number of personnel necessary for the UST remediation will be present in the work zone, 5. DECONTAMINATION AND DISPOSAL HFA's standard operating procedures establish practices that minimize contact with potentially contaminated materials. Decontamination procedures are utilized if there is suspected or known contamination of equipment, supplies, instruments, or any personnel surfaces. Soap and water will be utilized in removing contaminants from personnel surfaces as well as equipment and instruments, Contaminated washwater will be disposed of in accordance with procedures outlined in the Bakersfield Fire Department Hazardous Materials Division UST Local Oversight Program guidance document. 6. WORKER TRAINING All HFA employees working on the site will have had, at a minimum, the 40-hour required OSHA Training for Hazardous Waste Site Activities (29 CFR 1910, 120), which includes training in the use of personal protective equipment. Individualized respiratOr fit testing is required of all HFA employees working at the site. 7. EMERGENCY PROCEDURES HFA employees are trained in emergency first aid and emergency first aid provisions will be brought to the site. In event of overt personnel exposure (i.e., skin contact, inhalation, or ingestion), the victim will be transported to and treated at the closest' hospital. SAN FRANCISCO STATE HIGHWAY COUNTY ROUTE NUMBER LOS ANGELES NOTE: HIGHWAYS ARE 1 PT. LINES KERN MEDICAL CENTER 1830 FLOWER STREET BAKERSFIELD, CALIFORNIA FLOWER STREET BAKERSFIELD BAKER STREET C^IIFORNI^ SHFFI M~I'^L DIEGO CAUFORNIA SHEET METAL 601 EUREKA STREET BAKERSFIELD, CALIFORNIA HOSPITAL MAP HOLGUI~, FAHAN & ASSOCIATES, INC. G J L Environmental Gary J. Leary, Environmental Consultant 4009 FAIRWOOD ST. BAKERSFIELD, CA 93306-1310 · (805) 872-1543 October 27, 1993 BAKERSFIELD CITY FIRE DEPARTMENT Hazardous Material Division 2130 'G' Street Bakersfield, California 93301 RECEIVED ~r 2 6 1993 HAZ. MAT, DIV, Re: ~kersfield, Califomia '"-Pr~,_; Ovmees~. John M. and Deanna J. McCauley Subject: Third Quarter Status Report for 1993 Prepared by: _ GJL ENVIRONMENTAL Gary J. Leary, R.E.A. Status of Investigation and Cleanup Activities Including the Results of Ail Investigations Implemented to Date On March 8, 1993 an Expanded Site Characterization was undertaken. The results of the Expanded Site Characterization are in Exhibit "1" On March 19 - 20, 1992, a site characterization was performed to define the vertical and horizontal extent of the contamination plume. No cleanup activities have been i_mple_mented. Associates. of 1993. Next Phase of Investigation The environmental consulting firm has been selected, it is Holguin, Fahan & The Corrective Action Plan will be written and work should begin before the end On August 13, 1993, an Invitation for Bids was issued to four (4) environmental consulting firms, to supplement and implement a Corrective Action Plan. If the Bakersfield City Fire Department the lead agency in this project agrees with PIWAREA ENGINEERING, INC. Findings from the Expanded Site Characterization. An Invitation for Bids will be issued this quarter, to install the Vapor Extract Wells and treatment unit. On November-16, 1992,--the Bakersfield City Fire Department, the lead agency, is_sued a letter which agreed with site assessment recommendation from John R. Wilson and Associates. An Invitation for Bids was issued on December 23, 1992, to four (4) environmental consulting firms. Method of Cleanup Proposed or Implemented to Date The cleanup method proposed is a vapor extraction unit. This was acceptable to the Bakersfield City Fire Department. Time Schedules for the Completion of the lnvestieation of the Site and Remediafion A time schedule will be included as part of the Corrective Action Plan. Method and Location of Disposal of the Released Hazardous Substance and any Contaminated Soil~ Ground Water or Surface Water None has been chosen at this time. Manifest Required for Transport of Hazardous Substances 3. No material was manifest off site this quarter. Monitoring Well Data Including Ground Water E!evatiom pH, Conductivi ,ty~ Temperature and Gradient No monitoring wells have been installed at this time. Tabulated Analytical Results of Ground Water or Soil Sampling 4. None in the Third Quarter. A Site Map Showing the "Zero Line" of Contamination if Known~ and Changes in Analyses and Gradient Measurements Over the Last Quarter 5. None in the Third Quarter. Tabulated Data for all Monitoring Wells Including Ground Water Elevations Collected to Date No monitoring wells have been installed at this time. A Site Map Delineating Ground Water Elevation Contours Based on Recent Datm if the Site is in Remediation~ Define the Zone of Capture for any Extraction Well(si on the Contour Map Does not apply at this time. Tabulated Analytical Results from all Previous Sampling Events Including Laborato ,fy Reports for the Most Recent Samplin~ Event and Chain of Custody Documentation 6. All this information can be found in Exhibit "1". Site Map Delineating Contamination Contours for Soil and Ground Water Based on Recent Data 7. The site map delineating contamination contours for soil. This map was in the Second Quarter Report of i993. The Quantity. of Ground Water~ Vapors, and Hydrocarbons Removed (in Gals. cu. ft., and ibs.~ RespectivelyL During the Reoorting Period and Cumulative to Date Does not apply at this time. Times and Dates Equipment Was Not Ooeratin~, Cause of Shutdown~ and a Corrective Action Plan to Insure Similar Shutdowns do not Reoccur (Proposed Corrective Actions are to be Completed Within 30 Days of the System Shutdown) Does not apply at this time. Estimates of the Ouanfi ,ty of Contamination Remaining in Soil and Ground Water~ and Time for Completine Remediafion GJL/kmk Does not apply at this time. Sincerely, GJL ENVIRONMENTAL Gary J. Leary, R.E.A. EXI-11BIT 1 SUMMARY OF LABORATORY ANALYTICAL DATA (values in milligrams per kilogram (ppm)) Boring Depth TPH Benzene Toluene Ethyl 'Total Total Soluble No. Gasoline Benzene X¥1enes Lead Lead B-1 5' 6,000* ND(>20) 210, 50* 1960- 39 2.7 B-1 15' 6,000* ND(>100) 390* 170- 1290- B-1 30' 3,100- ND(>2) 86* 71, 438* 4.5 B-1 45' 3,000* 5* 160- 75* 390* B-1 60' 13,000- 110' 1,300, 300* 2,560* B-! 75' ND ND ND ND ND ND B-1 80' ND ND ND ND ND B-1 85' ND ND 0.047 ND 0.014 4.5 B-1 90' ND 0.084 0.16 0.049 0.088 B-2 15' 12,000, 1,000- 1,500- 340* 2,480* B-2 30' 400 0.2 1.2 4.7 49 3.9 B-3 30' 30,000* 400 3,400* 800* 4,300* B-4 30' ND ND ND ND ND B-4 40' ND ND ND ND ND B-~ 15' ND 0.011 0.017 ND ND B-5 40' 7,000* 42 * 540* 160- 810- B-6 20' ND ND ND ND ND 3.6 B-6 30' ND ND ND ND ND B-6 40' ND ND 0.008 ND 0.010 8.5 AL NA 1,000 1 1 50 50 1,000 5 MRL NA 1.0 0.005 0.005 0.005 0.005 2.5 '0.5 ND: None Detected at or above minimum reporting level (MRL) NA: Not Applicable *: Exceeds RWQCB recommended guidelines. AL: Regional Water Quality Control Board recommended guidelines for contaminants in soil. the recommended guidelines were calculated using the LUFT methodology by multiplying the most stringent current federal or state water quality standards by a factor of 1,000 for gasoline, and the volatile aromatics to account for attenuation due to soil composition and distance from groundwater. BYRUM, HOLLAND & GRIFFIN Attorneys at Law Kenneth M. Byrum Kenneth A. Holland Patrick C. Carrick David R. Griffin Robert H. Brumfield, III Christopher M. Dietrich Linda Etienne Scott D. Perlman lames M. Duncan Stephen K. Vetter John R Fitzmorris Alan B. Harris August 11, 1993 Mr. Ralph E. Huey, Hazardous Materials Coordinator, Underground Tank Program Bakersfield Fire Department CITY OF BAKERSFIELD 2101 "H" Street Bakersfield, California 93301. Post Office Box 2348 Bakersfield, CA 93303-2348 Unocal Plaza 1800 30th Street, Fourth Floor Bakersfield, CA 93301-1920 Telephone (805)631-5565 Facsimile (805) 322-0113 RECEIVED AUg 1 6 1993 HAZ. MAT. DIV. Re: Soil and Water Investigation; 601 Eureka Street, Bakersfield, California Dear Mr. Huey: My firm represents Mr. and Mrs. John McCauley. I am writing in response to your letter dated June 22, 1993, addressed to Mr. McCauley in care of my firm. Both I and my clients were out of town during a portion of the 20 working day period prescribed by your letter, and were unable to review the situation together until Monday morning of this week. The McCauleys' consultant, Gary Lea~, of GJL Environ- mental, has informed you of that fact and has promised a response this week. The Expanded Site Characterization and Corrective Action Plan, prepared by Piwarea Engineering, Inc. at the request of our clients, describes two potentially effective alternatives for remediation: natural in situ biodegradation (the "no action" alternative) and vapor extraction. ... Under 23 Cal. Code of Regs. § 2725(f), Mr. and Mrs. McCauley must propose to implement the most cost-effective alternative. "Cost-effective" is defined to mean "actions that achieve similar or greater water quality benefits at an equal or lesser cost than other corrective actions." 23 Cal. Code of Regs. § 2720. We have discussed the cost-effectiveness issue with John Wilson of Piwarea Engineering. On the basis of the information available to us at this time, vapor extraction appears to be the most cost-effective alternative, as it may eliminate the small long-term risk of migration of unacceptable levels of contamina- tion to groundwater, and is less expensive than other alternatives which would achieve the same result. Our clients therefore concur BYRUM, HOLLAND & GRIFFIN Attorneys at Law August 11, 1993 Page 2 with the City in the selection of remedies, and will seek to implement the vapor extraction alternative. The report prepared by Piwarea proposed soil cleanup levels of 1,000 mg/kg for TPH-G, 1 mg/kg for benzene and toluene, and 50 mg/kg for ethylbenzene and total xylenes. The proposal was based upon the Regional Water Quality Control Board's recommended guide- lines and the LUFT methodology by multiplying the most stringent current federal or state water quality standards by a factor of 1,000 to account for attenuation due to site-specific parameters. (Report at page 5.) The site-specific parameters included the considerable vertical distance to groundwater, the soil lithology, and the low annual average precipitation. Last Friday, you in- formed Mr. Leary, in an informal telephone conversation, that the City believes that the soil cleanup levels should be 100 mg/kg for TPH-G, 1 mg/kg fo~ benzene, and 20 mg/kg for ethylbenzene, tolu- ene, and total xylenes. As you undoubtedly know, a law of diminishing returns can set in, in performing vapor extraction, in which the time and expense required in order to obtain a marginal reduction in contaminant concentration can exceed the environmental benefits of doing so. As the report observed, the circumstances present a very strong case for the no action alternative, we are therefore concerned that a cleanup level of 100 mg/kg for TPH-Gmay unnecessarily prolong the implementation phase and increase the cost without a commensurate benefit to groundwater. After consideration, here is how we propose to proceed: Since (1) the City has informally rejected the cleanup levels proposed in the Corrective Action Plan; (2) it is unclear, at least to me, what level of detail the CAP should provide with respect to the preferred alternative; (3) an efficient and effec- tive timetable may depend, in part, on the remedial design, and therefore on the successful Corrective Action Plan Implementation Phase bidder; and (4) we do not wish to delay the implementation phase -- we propose to treat the current Corrective Action Plan as not yet final. Our invitation for bids will ask each bidder to include in its bid the cleanup levels which it believes to be appropriate for the site and its timetable for the project. If we accept a bid which proposes cleanup levels higher than you have indicated, we will ask the consultant to meet with the City to determine whether the consultant's proposed cleanup levels are adequate and in accordance with applicable statutory and regulato- ry standards and guidance. Obviously, the work will not proceed without the City's concurrence. Our invitation for bids will be ready to go out this week to qualified consultants. The closing date for'bids will be August 30, 1993. If at least three responsive bids are received, our clients will select the winning bidder within five working days from the closing date. The winning bidder will prepare a workplan which will modify and supplement the Corrective Action Plan pre- BYRUM, HOLLAND & GRIFFIN Attorneys at Law August 11, 1993 Page 3 pared by Piwarea. The workplan will be submitted to the City for its review and approval within 20 working days following the acceptance of the bid. Our invitation for bids will provide that in the event that the City requires any revisions to the workplan, the consultant will make the revisions and resubmit the workDlan within five working days following the receipt of the City's comments. Of course, the City will have to review the workplan and, if it finds the workplan acceptable, satisfy the public particiDation requirements of 23 Cal. Code of Regs. § 2728 before the work can commence. Insofar as I am able to determine, this approach is consis- tent with the corrective action regulations. Please advise me as soon as possible if this proposal is for any reason unacceptable to the City. Thank you for your courtesy and cooperation. cc: Very truly yours, BYRUM/~0LLAND&~IFF~ Mr. and Mrs. McCauley Barbara Andersen, State Water Resources Control Board Mr. Gary Leary CITY of BAKERSFIELD "WE CARE" FIRE DEPARTMENT S. D. JOHNSON FIRE CHIEF John McCauley c/o Byrum, Holland, & Griffin 1800 - 30th Street, 4th Floor Bakersfield, CA 93301 RE: June 22, 1993 2101H STREET BAKERSFIELD, 93301 326-3911 Results of site characterization of the property located at 601 Eureka Street, Bakersfield, California. Dear Mr. McCauley, This office has reviewed the site characterization report submitted by Gil Environmental for the property located at the above stated address. Laboratory results reveal petroleum hydrocarbons are present in the soil at levels exceeding limits .allowable by state guidelines. California Sheet Metal is hereby notified that mitigation of the contamination plume to acceptable levels is required by this office. This office accepts option 4, listed in the site characterization study, vapor extraction, as the most practical method for accomplishing a reduction in the hydrocarbon levels detected at the site. However, if you, or your consultant have an alternate method you wish to employ you may submit a request to this office for review and approval. Please respond within twenty (20) working days from receipt of this letter as to your intention regarding this matter and a time table for carrying them out. If you have any questions, please call me at (805) 326-3979. cc: Gary Leafy Sincerely, ~al~h E~quey ' (Hazardous Materials Coordinator Underground Tank Program CALIFORNIA SHEET METAL Location: 'NO LONGER IN BUSINESS ID Number: 215-000-000357 ~ ESTER 02/13/91 q~ Bus. Phone: (805)32~.8396 // BAKERSFIELD STATION City : Community: Mail: City: 601 EUREKA ST BAKERSFIELD Owner: JOHN M MCCALLEY Addrs: 601 EUREKA ST City: BAKERSFIELD State: CA Zip: 93305- Phone: ( ) State: CA Zip: 93305- Parcel ID: Dunn/Brad: SIC: Your Activity Code: Last Inv.: 000002U SqFt: Last P.O.: <A> Financial <B> Tracking <C> UST Info <D> Topic D <E> Topic E '1~ <F> Event F <G> Event G <P> Print <Eec> Exit CALIFORNIA SHEET METAL ~ <A>.Financial Branch <1> General Information I- Fee Groups A:99 C: E: G: I: ID Number: 215-000-000357 K: M: O: Q: S: U: VALERIEw:10/29/92y: <5> Account History Prog Date Type Invoice Misc. Notations Debit Credit Balance / U 03/28/94 ManInv 000002U--;/~.. ~0~ 15.50~ 0.00 15.50 <1> Gen. Info. <2> Cur. Bill. <3> UST Permit <4> UST Action <5> Acct Hist <%> Next <$> Previous <P> Print <FI> Help <Eec> Exit