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HomeMy WebLinkAboutUST-REPORT 10/30/1992I I I I I I I I I I I I I i I I I I I Earth Systems Env ironmental, Inc. A Member of The Earth Systems Group I I I I i I I ! I I I ! I I I I I I REPORT OF REMEDIAL ACTION BAKERSFIELD COLLEGE UNDERGROUND STORAGE TANK SITE 1801 PANORAMA DRIVE BAKERSFIELD, CALIFORNIA October 30, 1992 Prepared by Earth Systems Environmental, Inc. 6501 McDivitt Drive, Suite B Bakersfield, California (805) 836-0901 FAX (805) 836-0911 Project No. EB-8191-2 I I I I I I I I I I I I I I I I I I I TABLE OF CONTENTS REPORT OF REMEDIAL ACTION BAKERSFIELD COLLEGE 1801 PANORAMA DRIVE BAKERSFIELD, CALIFORNIA 1.0 INTRODUCTION ...................................................................................................... 1 1.1 'Site Description .......................................................................................... 3 1.2 Project History ....................................................................................... ,...3 1.2.1 Geologic Conditions ........................................................................ 6 1.2.2 Subsurface Conditions ................................................................... 7 1.2.3 Laboratory Analytical Results ..................................................... 7 1.2.4 Conclusions of Initial Assessment ............................................... 8 2.0 BIOREMEDIATION DESIGN, MANAGEMENT, AND MONITORING ...................... 9 3.0 PROGRESS SOIL SAMPLING ................................................... ~ ............................. 9 4.0 LABORATORY ANALYSIS OF TREATED SOIL ................................. ' ..................... 9 5.0 ANALYTICAL RESULTS - TREATED SOIL ............................................................ 10 6.0 CONCLUSIONS ......................................................................................................... 10 7.0 RECOMMENDATIONS ............................................................................................. 11 8.0 CLOSURE ......................................................................... i ............................. '. ......... 11 Figure 1 Figure 2 APPENDIX A Vicinity Map ............................................................................... 13 Site Map ........................................................................................ 14 Laboratory Reports and Chain-of-Custody I i I I I I I I I I I I I i I Earth Systems Environmental, Inc. A Member of The Earth Systems Group 6701 McDivitt Drive, Suite B · Bakersfield, CA 93313 · (805) 836-0901 · FAX.(805) 836-0911 O~tober 30, 1992 Project No.: EB-8191-2 Doc. No.:9210-EO85.RPT City' of Bakersfield Fire Department Hazardous Materials Division 2101 H Street Bakersfield, California 93301 Attention: Mr. Joe A. Dunwoody SUBJECT: Reference: Reference: Reference: REPORT OF REMEDIAL ACTION BAKERSFIELD COl J FGE 1801 PANORAMA DRIVE BAKERSFIELD, CALIFORNIA .Preliminary Soil Characterization, Bakersfield College, (ESE, August 10, :1992) Soil Characterization Work Plan, Bakersfield College, (ESE, June 19, 1992) Tank Closure Report, Bakersfield' College, (ESE, May 21, 1992) 1.0 INTRODUCTION This report presents the results' of soil' remediation of 50 Cubic yards of gasoline impacted sOil excavated from beneath the location, of the gasoline dispenser' and product pipeline performed' by Earth Systems Environmental, Inc. (ESE) at the above' referenced site. This soil was excavated as a result of an exploration trench constructed beneath the former dispenser and product pipeline location in an effort to assess the vertical and lateral limits of gasoline impacted soil. The excavated soil has been successfully treated on site using the process of mechanical cultivation enhancing oxygenation aeration, and biodegradation. Gasoline hydrocarbons are no longer detected in the excavated soil. Therefore, ESE recommends that the client be permitted to use the soil for grading fill at the site. I I I I I ! I I I I I I I I I I I I I Bakersfield, College 2 October 30, 1992 ~The--6~[~ratic~ii--tren~h:i-'~di-d-'ia~t'~i. det~m._~n~-t~he~]imi~---of 'gas61ine hydrocarbons. '~SE recommends expanded characterization activities using an environmental drilling rig. Due to the frequent large cobbles and boulders within the Kern River Formation beneath the site, it is ESE's opinion that the use of a conventional hollow stem auger rig may be of limited success. The size of the cobbles may also restrict the use of a reverse air rotary rig. A percussion type hammer rig, or a mud rig have a proven track record of successfully drilling through the Kern River Formation on the Panorama Bluffs. Despite the risks, ESE recommends that Bakersfield College attempt the drilling operations with a conventional hollow stem auger drill rig. With luck, borings can be positioned to adequately assess the limits of the gasoline hydrocarbons. Flexibility will need to be maintained to abandon borings that encounter refusal, and move to nearby locations. It is ESE's opinion that the cost savings in using this type of rig out weigh the risks, and an effort should be made to complete the soil characterization using a conventional holloTM stem auger drill rig. 'The scope of work for this project was developed in conjunction with Mr. Tom Lockwood of Franzen Hill Corporation rePresenting Bakersfield College and Mr. Joe Dunwoody of the City of Bakersfield Fire Department, Hazardous Materials 'Division. In addition, remedial action alternatives are presented. Work performed to remediate the excavated soil includes the following: · Placement of the gasoline impacted soil in a twelve inch lift within a treatment cell. · Mechanical cultivation increasing oxygenation and enhancing indigenous soil microbes to reduce the concentrations of the petroleum hydrocarbons to beneath RWQCB recommended guidelines. · Progress monitoring and sampling. · Preparation of this report documenting the successful completion of remediation activities. EB-8191-1 9210-E085.RPT I I Bakersfield, College ! ,, 1.1 Sit,.e Description 3 October 30, 1992 I I I I I I The site is located at 1801 Panorama Drive in the city of Bakersfield in Kern County, California (Figure 1). A 3,000 gallon underground gasoline storage tank, fuel dispenser, and associated product pipeline were removed on May 1, 1992 (Figure 2). The underground storage tank was operated to fuel Bakersfield College's maintenance department vehicles. 1.2 'Project History Bakersfield College contracted with Franzen Hill of Tulare, California to remove the underground fuel storage tank, dispenser, and associated product pipeline at the site. On May 1, 1992, Franzen Hill removed the tank, dispenser, and associated product pipeline. The tank was removed under permit with the City of Bakersfield Fire Department, Hazardous Materials Division. I I I I I .I I I Franzen Hill contracted 'with Earth Systems Environmental to provide an environmental technician to collect soil samples at the direction of Mr. Joe Dunwoody with the City of Bakersfield Fire Department, Hazardous Materials Division. One soil sample (TH-i) was collected from beneath the center of the the former tank location at a depth of 11 feet below surface grade (Figure 2). Two soil samples (TH-2, and TH-3) were collected from beneath the former product pipeline at a depth of 6 and 4 feet below surface grade, respectively. One soil sample (TH-4) was collected from beneath the former dispenser at a depth of 4 feet below surface grade. The samples were collected from the backhoe bucket immediately after soil excavation and stored in 2" brass tubes, sealed with teflonTM liners and end caps. The samples were then labeled, handled and transported according to the United States Environmental Protection Agency (USEP^) protocol to a State of California Department of Health Services (DOHS) certified laboratory. Sample identification and chain-of-custody procedures were utilized for the samples to ensure sample integrity and to document sample possession from the time of collection to its ultimate EB~8191-1 9210-E085.RPT I I Bakersfield, College 4 October 30, 1992 I I I I I I I I I I I. I I I I I I destination. The' sample label identified the job number, sampler, date and time of collection and sample number unique to the sample. All sampling equipment was washed with TSPTM (tri-sodium phosphate) cleanser, pre-rinsed with tap water and a final rinse of de-ionized Water prior to sampling. The soil samples designated for chemical analysis were submitted to B C Laboratories in Bakersfield, a State of California Department of Health Services (DOHS) certified laboratory. Appendix A presents copies of the analytical results and chain-of- custody documents. The soil samples v~ere analyzed for Total Purgeable Petroleum HYdrocarbons as gasoline (TPPHg) using the California DOHS LUFT Method, and for the gasoline constituent volatile aromatics, benzene, toluene, ethylbenzene, and total xylenes (BTEX) using USEPA Test Method 8020. Total Purgeable Petroleum Hydrocarbons as gasoline and the gasoline constituent volatile aromatics were not detected at or above the detection limit in the sample TH-1 analyzed from beneath the former undergrOund storage tank. However, TPPH as gasoline were detected at concentrations of 21 mg/kg, and 4,000 mg]kg from the samples TH-2 and TH-3. TH-2 was positioned beneath the product pipeline on the side of the excavation at'a depth of 6 feet, where there was a visual indication questioning the integrity of the tank. TH-3 was positioned beneath the product pipeline run. TPPH as gasoline was detected at concentrations of 1,000 rog/kg in sample TH-4 from beneath the former dispenser. Volatile aromatic compounds were detected in minor concentrations in samples. TH-2 and TH-3, but were detected in significant concentrations in TH-4 with benzene detected at 2 mg/kg. Table 1 presents a summary of the analytical results for TPPH as gasoline, and the gasoline constituent volatile aromatics in the four soil samples: EB-8191-1 9210-E085.RPT I I Bakersfield, College 5 October 30, 1992 I I I I I .I I I I I I I I I I I I TABLE 1. (Analytical Results expressed in milligrams per kilogram) Sample No, De'Pth.' ii TPPH Benzerte [ ] Total GaSoline I .. [. Toluene Ethyl- . . benzene. ,...~. " TH-I' 1I;' I ND I ND I ND .I ND I ND TH-2., 1. 6' [ 21 '~ [ ND'' [ .. 0.07 .. I 0.07' l. 1.76 " TH-3 .I ' 4' I 4i000. I ND' [ 10'... I ND I 350* TH-4 4' 1~000 , 2* ,36* , 14 , , 199' A,L NA, , 17000 1.0 ,1.0 50 50 ND: None Detected at or above minimum reporting level. NA: Not Applicable *: exceeds current recommended guidelines. A L: Regional Water Quality Control Board Action Level for contaminants in soil. Action Levels were calculated using 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 soil composition and distance from groundwater. Based on the soil sampling and analysis, detectable concentrations of TPPH as gasoline and the gasoline constituent volatile aromatics were not present in the soil samples collected from beneath the former underground gasoline storage tank. Ho~veverrZ:gasoliiie~.h~-d~-6~c~bb-n~:~e'r-e-det~Cted.~in-'~the :Soil sain~les3¥f6m--)~_e~n~-a-t~ii-:-~eb pF0-d~¢t--~ii~el'ine an er'- ai r~fi~n~- which x current Yee0mmended--gUidelines? Additional site characterization was required by ~e City of Bakersfield Fire Department, Hazardous Materials Division in the vicinity of the former gasoline dispenser and pipeline. Due to the subsurface stratigraphy at the site, an initial soil characterization by an .exploration trench was attempted on July 1, 1992 using a backhoe operated by Franzen Hill Corporation. Excavating proceeded to a length and width of 15 feet centered on the product pipeline, and to a depth of 12 feet below surface grade (Figure 2). EB-8191-1 9210-E085.RPT IBakersfield, College 6 October 30, 1992 I I I I I I I I I i i I I I I I Soil samples were collected at 5-foot intervals in during excavation to provide a vertical profile of the gasoline hydrocarbons. Soil samples were also collected at a depth of 12 feet from the south, west and north sidewalls as well as the center of the excavation base. No sample was collected from the eastern sidewall' since a sample had been collected there during the tank removal operations. Six soil samples were sent to B.C. Laboratories, of Bakersfield, California, a state- certified laboratory for chemical analysis. The soil samples were analyzed for total purgeable petroleum hydrocarbons as gasoline (TPPHg) with a minimum detection limit of 5.0 mg/kg, and the gasoline constituent volatile aromatics benzene, toluene, ethylbenzene, and total xylenes (BTEX) with a minimum detection limit of 0.5 mg/kg using USEPA Test Method 5030/GCFID, and USEPA Test Method 5030/8020. i.2.1 Geologic Conditions Regional Geology: 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.~ 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 southern most being the Kern River. The subject site is located approximately 1/2 miles south of the Kern River. The surface of the San Joaquin Valley is composed primarily of unconsolidated Pleistocene (1.6 million to 11,000 years ago) and Recent (11,000 years ago to the present) alluvial sediments. Beneath the alluvial sediments are older, predominantly lake bed deposits. These lie unconformably on Mio-Pliocene marine sediments which extend to crystalline basement at approximately 20,000 feet. Site Geology: Geologic deposits in the study area include Pleistocene alluvial sediments of the Kern River Formation, which form a homocline dipping to the southwest. The deposits are alluvium consisting of poorly indurated and dissected fan deposits (CDMG, 1964). The subject property is located at the top of the Panorama Bluffs at an elevation 400 feet above the south side of the Kern River. EB-8191-1 9210-E085.RPT I I I I I Bakersfield, College 7 October 30, 1992 The depth to the regional unconfined aquifer is greater than 400 feet below surface grade beneath the site with the direction of groundwater flow to the southwest (Kern County Water Agency, Improvement District No. 4, 1991 Report on Water Conditions, February, 1992). The nearest known occurrence of perched groundwater is five' miles to the southwest at a depth of 20 feet in the abandoned Kern River channel to the ancient Kern Lake Bed (Kern County Water Agency, 1991 Water Supply Report, May 1992). No perched groundwater is known to exist beneath the subject site. 1.2.2 Subsurface Conditions Subsurface material encountered during drilling was alluvium to the total depth of the trench. The alluvium was characterized by consOlidated, highly permeable, very slightly moist, light brown, well graded gravelly sand (SW/GW) with numerous large cobbles to boulders. 1.2.3 Laboratory Analytical Results All six of the soil samples analyzed contained concentrations of total purgeable petroleum hydrocarbons as gasoline (TPPHg) in excess of 1,000 mg/kg. TPPHg was detected in the trench at a concentration of 1,800 mg/kg at a depth of 5 feet, 3,200 mg/kg at 10 feet and 1,800 mg/kg at 12 feet as well as 1,700 mg/kg in the western sidewall, 3,200 mg/kg in the southern sidewall and 1,900 mg/kg in the northern sidewall. The gasoline constituent volatile aromatic, benzene was detected in three of the six soil samples. Benzene was not detected in the samples from the center of the trench at 5 and 10 feet or the southern sidewall at 12 feet. Benzene was detected in the western sidewall at 0.7 mg/kg, in the northern sidewall at 0.8 mg/kg, and in the trench base at 0.6 mg/kg. The gasoline constituent volatile aromatics, toluene, ethylbenzene, and total xylenes were detected in all six of the soil samples. Regional Water Quality Control Board recommended guidelines for gasoline, and the gasoline constituent volatile aromatics, benzene, toluene, ethylbenzene, and total xylenes have been calculated using the LUFT methodology by multiplying the most stringent current federal or state water quality standards by a factor of 1,000 to EB-8191-1 9210-E085.RPT I I I I I I I I I I I I I I I I I i I Bakersfield, College 8 October 30, 1992 account for attenuation due to site-specific parameters including vertical separation to groundwater, soil lithology, fractures in subsurfaces, annual average preciPitation, and any direct conduits to groundwater. The recommended guidelines are 1,000 mg/kg for TPPH as gasoline, 1.0 mg/kg for benzene and toluene, and 50 mg/kg for ethylbenzene and total xylenes. Laboratory analytical .results for the six selected soil samples from the excavation trench are summarized in Table 2 Summary of Analytical Results. Copies of the analytical reports and chain of custody documentation are presented in Appendix B - Laboratory Analytical Results. TABLE-2 values in milli ~er kilogram~ G~e I benzene Xylenes TH_i' 5', 1,800, . ND 36* 34 . 320* T'H-1 10' · 3~200' ND 13' 29 360* South Sidewall 12' 1,700' ND , 17' 18 300* West Sidewall 12' 3~200' 0.7 .10' 16 360* North Sidewall 12' 1~900. .... 0.8 79* 45 430* Base 12' 1~800' 0.6 13' 15 280* A L NA 1 000 1.0 1.0 50 50 MRL NA 1.0 0.5 0.5 0.5 0.5 ND: None Detect6d at or above minimum reporting level (MRL). NA: Not Applicable. *: exceeds current recommended guidelines. A L: Regional Water Quality Control Board recommended guidelines for concentrations in soil. Recommended guidelines were calculated rising 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 soil composition and distance from groundwater. 1.2.4 Conclusions of the Initial .Ass. essment The data obtained from the tank removal operations suggest that soil impacted with gasoline hydrocarbons at concentrations in excess RWQCB recommended guidelines exist at the subject site in an area beneath the former location of the gasoline dispenser and product pipeline. The subsequent soil excavating activities indicate that gasoline hydrocarbons in excess of 1,000 mg/kg extend to a depth greater than 12 feet below surface grade. Based on the field information and analytical data, it appears that additional site characterization, and remedial activities will be required EB-8191-1 9210-E085.RPT I Bakersfield, College I 9 October 30, 1992 by the City of Bakersfield Fire Department, Hazardous Materials Division. I I I I I I ! I ! I I The additional site investigation should consist of soil borings to assess both' the vertical and lateral extent of the .gasoline hydrocarbons in the subsurface. 2.0 BIOREMEDIATION DESIGN, MANAGEMENT, AND MONITORING The 50 cubic yards of gasoline impacted soil excavated from the site during the exploration trenching was placed as a one foot thick lift within at treatment cell at the site. The bioremedial system utilizes active mechanical cultivation by a tractor and plow combination on a weekly basis. A significant decrease in the concentration of the hydrocarbons through aeration, and oxygenation can be expected through the mechanical cultivation of petroleum hydrocarbons with the molecular weight of gasoline. 3.0 CONFIRMATION SOIL SAMPLING The progress of the treatment has been monitored periodically by .field screening for organic vapors using a PID. On September 23, 1992, ESE collected four composite soil samples from locations within the treatment cell, each representing approximately 12.5 cubic yards of impacted soil. Undisturbed soil samples were obtained by driving a modified Shelby Tube sampler containing stainless steel sleeves with a weighted sliding hammer, immediately sealed with a Teflon® liners capped, labeled, and placed on ice for transport to a California Department of Health Services (DOHS) certified laboratory. Strict chain of custody procedures were' utilized for all samples collected to ensure sample integrity and to document sample possession from the time of collection to the final destination. 4.0 LABORATORY ANALYSIS OF TREATED SOIL The four soil samples were analyzed at BC Laboratories, a State of California certified laboratory for TPPH as gasoline by USEPA Test Method 8015 (modified for gasoline), and the volatile aromatics (BTEX) by USEPA Test Method 8020. The analytical reports are included as Appendix A. EB-8191-1 9210-E085.RPT I I I I I i I i .I i I Ir I I I Bakersfield~ College 1 0 October 30, 1992 5.0 ANALYTICAL RESULTS - TREATED SOIL TPPH as gasoline and the gasoline constituent volatile aromatics were not detected in the fou~ soil samples. Table 3 presents a summary of the analytical results for TPPH' as gasoline and the volatile aromatics (BTEX) in soil samples analyzed from the bioremedial treatment cell: TABLE 3. (Analytical Results expressed in milligrams per kilogram) , Gasoline . .. benzene Xylenes $-1 "' ND ND' ND ND ND $-3 ND ND ND ND ND $-4 ND ND ND ND ND ..... oos ' o 0o5 ' o oos 'o o~ m~t~ ~ 0..: . . ND: None Detected at or above minimum reporting level (MRL). NA: Not Applicable A L: Regional Water Quality Control Board recommended guideline for contaminants in soil. The recommended guideline was calculated using 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 soil composition and distance from groundwater. 6.0 CONCLUSIONS Soil with concentrations of petroleum hydrocarbons in excess of RWQCB recommended guidelines are known to exist in the subsurface at the location of the former gasoline dispenser and associated product pipeline. Additional soil characterizations are likely to be required by the City of Bakersfield Fire Department, Hazardous Materials Division. EB-8191-1 9210-E085.RPT I I i I I I I I I I I I Bakersfield, College 1 1 October 30, 1992 The bioremediation of the excavated soil through mechanical cultivation enhancing Oxygenation has successfully reduced the concentration of gasoline hydrocarbons in the soil. Gasoline hydrocarbons are no longer detectable in the soil within the treatment cell. The treatment 'cell will be decommissioned, and the soil spread on site as grading fill. 7.0 RECOMMENDATIONS ESE recommends that additional soil characterization activities be conducted in the location of the former gasoline dispenser and product pipeline. ESE recommends that an attempt be made to conduct the soil characterization using a conventional hollow stem auger rig. With luck a boring will be able to be advanced which determines the vertical extent of the gasoline hydrocarbons in the subsurface, which is the most important aspect of the characterization. If this can be accomplished, an argument may be made that no additional action, or limited additional excavation and on site treatment will be required for the site to receive closure, due to the several hundred feet of vertical separation to the first known occurrence of groundwater. 8.0 CLOSURE This report has been prepared for the exclusive use of Bakersfield College as it pertains to the location of the former 3,000 gallon gasoline tank at 1801 Panorama Drive 'in Bakersfield, California. The results contained in each verbal or written report are based upon the information acquired' during the assessment. It is possible that variations e0uld exist beyond points explored during the course of the investigation. Also, changes in conditions found could occur at some time in the future due to contaminant migration, variations in rainfall, temperature, and/or other factors not apparent at the time of the field investigation. This report should not be regarded as a guarantee that no further contamination, beyond that which may have been detected within the scope of this study, is present on or beneath the site. If additional information regarding the possible presence or past use of hazardous materials at the site becomes available, then the need for further field investigation should be re-evaluated. Similarly, if suspected contamination is encountered during earthwork or construction activities, a EB-8191-1 9210-E085.RPT I I Bakersfield, College 12 October 30, 1992 , O qualified engineer or geologist should be on-site to monitor the soils and collect I samples for laboratory analysis. I The services performed by ESE were conducted in a manner consistent with the level' of care and skill ordinarily exercised by members of our profession currently Ipracticing under similar conditions in the state of California. No other warranty is expressed or implied. I Thank you for this opportunity to be of service. If you have any questions regarding this report or the information contained herein, please contact this office at your I convenience. . I Respectfully Submitted, I EARTH SYSTEM ENVIRONMENTAL, INC. ~im Martin -'~" mhrk-R, m~gargee, .t~.G. d~892 I Environmental Specialist Senior Geologist I I cc: 1 - Addressee 2 - Tom Lockwood - Franzen Hill ~ I 1 Bakersfield File -- 1 - San Luis Obispo File I I EB-8191 - 1 9210-E085.RPT .... . ~~ ,, _,~/ ~ - , ,-,.,,.,,..,,~. ANOR M ' p~.- ~ ~: · '~'.;'..~ P~~~ ~ I~ c.~ ~ ~ ~,"~ 9~-~'~'- = ~ - ~ - ,.- = = ....:.: .... ~' flou~e Z ~ Ave[ el . . ~ C,~o/,I? . ~ ~ C, aw,ordS,'/ " l ..... ~ ~ ~'~ ~ ~,llkl ~u,~lSI I ~tl c ~~ ~ -.~ .t-,~ - '  Each Systems TITLE .Figure A Mem~ ~ ~e EaCh Syste~ Gro~ BakersfieM, CA ~313 (8~) ~6-~t JO8 NO. t~LJTOI~OTJ~£ ~ I : I  Eadh Systems TITLE Figure E qvironmental, Inc. ~~~~~~~ ~ (~) e36-~ .... JOB NO. Bakersfield, College' 13 October 30, 1992 I I I I I i I I I I I I I I I I EB-8191-1 APPENDIX A Laboratory Reports and Chain-of-Custody 9210-E085.RPT I I I Petroleum Hydrocarbons EARTH SYSTEMS ENVIRONMENTAL, INC. 6701 MCDIVITT AVE., STE. B BAKERSFIELD, CA 93313 Attn.: MARK MAGARGEE Date of Report: 09/30/92 LabS: 8627-1 Sample Description: EB-8191-2:S-1 & S-lA (SOIL) 09-23-92 @ i:15PM & 1:17PM COLLECTED BY TIM MARTIN TEST METHOD: TPH by D.O.H.S. / L.U.F.T. Manual Method - Modified EPA 8015 Individual constituents by EPA Method 5030/8020.. I I I Sample Matrix: Soil Date Sample Collected: 09/23/92 Constituents Date Sample Received @ Lab: o9'/2~/92 Analysis Results Date Analysis Completed: 09/28/92 Reporting Units Minimum Reporting Level I I' I Benzene Toluene Ethyl Benzene Total Xylenes Total'Petroleum Hydrocarbons (gas) None Detected None Detected None Detected None Detected None Detected mg/kg mg/kg mg/kg mg/kg mg/kg '~:~-.T,O · 005 o'.oos 0.005 California D.O.H.S. Cert. $1186 410OA~as Or. - Bakersfield, CA ~B..-~5)(2~ · [~](DS) ~11 · F=AX (15lOb--) ~)27-1918 I I I EARTH SYSTEMS ENVIRONMENTAL, 6701 MCDIVITT AVE., STE. B BAKERSFIELD, CA 93313 Attn.: IwJ%RK~GEE Petroleum Hydrocarbons INC. Date of Report: 09/30/92 Lab#: 8627-2 Sample Description: EB-8191-2:S-2 & S-2A (SOIL) 09-23-92 ® l:20PM & l:23PM COLLECTED BY TIM MARTIN TEST METHOD: TPH by D.O.H.S. / L.U.F.T. Manual Method - Modified EPA 8015 Individual constituents by EPA Method 5030/8020. Sample Matrix: Soil I I Date Sample Collected: 09/23/92 Constituents Date Sample Received @ Lab: .09/24/92 Analysis Results Date Analysis Completed: 09/28/92 Reporting Units Minimum Reporting Level I I I I Benzene Toluene Ethyl Benzene Total Xylenes Total Petroleum Hydrocarbons (gas) None Detected None Detected None Detected None Detected None Detected mg/kg mg/kg mg/kg mg/kg mg/kg ~0..-005 '<:.0 · 005 o.o05 0.005 1. I I I California D.O.H.S. Cert. $1186 Department SupervisOr 4100 Atlas Ct. · Bakersfield, CA ~ - [BOb-) 327~-ql I · FAX [805) 3L::~7-1E)I 8 I i I I Petroleum Hydrocarbons EARTH SYSTEMS ENVIRONMENTAL, INC. Date of 6701 MCDIVITT AVE., STE. B Report: 09/30/92 BAKERSFIELD, CA 93313 Lab ~: 8627-3 Attn.: MARK MAGARGEE Sample Description: EB-8191-2:S-3 & S-3A (SOIL) 09-23-92 ~ l:27PM & I:30PM COLLECTED BY TIM MARTIN TEST METHOD: TPH by D.O.H.S. / L.U.F.T. Manual Method - Modified EPA 8015 Individual constituents by EPA Method 5030/8020. I I I I I '1 samPle Matrix: Soil Date Sample Collected: 09/23/92 Constituents Benzene Toluene Ethyl Benzene Total Xylenes Total Petroleum Hydrocarbons (gas) Date Sample Received $ Lab: 09/24/92 Analysis Results None DeteCted None Detected None Detected None Detected None Detected Date.Analysis Completed:. 09/28/92 Reporting . Units mg/kg mg/kg mg/kg mg/kg mg/kg Minimum Reporting Level ~,~'~i~.0.005 '~0.'005 0.005 0.005 I I I California D.O.H.S. Cert. ~1186 Department Supervisor 4100Ar3as Oc. · Bakems~eld, C~ ~2~2)(2~ · (8(2b----) 327~491 I · F~< []5)05) 327-1 I I I I PetroleUm Hydrocarbons EARTH SYSTEMS ENVIRONMENTAL, INC. Date of 6701 MCDIVITT AVE., STE. B .. Report: .09/30/92 BAKERSFIELD, CA 93313 Lab ~: 8627-4 Attn.: MARK MAGARGEE Sample Description: EB-8191-2:S-4 & S-4A (SOIL) 09-23-92 ~ l:35PM & l:39PM COLLECTED BY TIM MARTIN TEST METHOD: TPH by D.O.H.S. / L.U.F.T. Manual Method - Modified EPA 8015 Individual constituents by EPA Method 5030/8020. I I I I I '1 Sample Matrix: .Soil Date Sample Collected:. 09/23/92 Constituents Benzene Toluene Ethyl Benzene Total Xylenes Total Petroleum Hydrocarbons (gas) Date Sample Received @ Lab: 09/24/92- Date Analysis Completed: 09/28/92 Minimum Analysis Reporting Reporting Results Units Level None Detected None Detected None Detected None Detected None Detected mg/kg mg/kg mg/kg mg/kg mg/kg · ~. ~'0.005 ":!:' O. 005 0.005 0.005 '1 ! I I California D.O.H.S. Cert. ~1186 Department .SuperviSor 4~ OOA~as Oc. · Baker~fSeld, CA ~)3:2)(i~ · 05~5) ~1 I · Report To: ~ ~ ~ ~, Analysis Requested La~ Sample Description Date & Time Sampled Comment: Billing Info: Re~h~~ ~o~eceivd .... ~bY: (Signature)~ ~/~'~/~E Date:~Time: Name: ~.~. ~ ~linquishe~y:~Sign~ture) ~eceiv~by:(Signat~5 Date:Time? Cit~ [~ State C ~ ..... Relinquished by: (Signature) Receiv~ by: (Signature) Date: Time: Aaention: Relinquished by: (Signature) Received by: (Signature) Date: Time: Time: Miles: Relinquished by: (Signature) Receiv~ by: (Signature) Date: Time: S~plo ~is~oal P.O.~ ~olinquish,d by: (Si~naturo) ~oeoivod b~: {Signature) Dato: Tim~: ~ ~rn to dionI ..