Loading...
HomeMy WebLinkAboutUNDERGROUND TANK-C-04/18/91~°LD '-~Oi~'~T][ON YARD BAKERSFIELD, CALIFORNIA VICINITY MAP F AWN BY: J'DATE'' OLD CORPORATION YARD NORTH The Twining Laboratories, Inc. CORONATION YA_R' D <D 8 ~P Ci~ OF BAKERSFIELD CALIFORNIA ,' ...... '~~ DEPARTMENT ' ~..,.. - , ..... : '------- .... . .- .... - ... _,. _ ...,_ :. ' . ~_Z'~ T' Z'vZ:Z-:~;-~..-~::~z~ I T~ ' [ .... ,- .~ *, ~*=~ CALIFORNIA KE*N COUNt. CAL~FO~Ni~ ENGINEERING DEPARTMENT PARKING IPROdECT No. 98V-0~9-00 WAREHOUSE PARKING SHED A/C PAVED YARD AREA B-6 B-5 _~-- 1 ] B-4 ~DIESEL TANKS /io- 20' Ts-3 NORTH IPROJ~CT No. , 987-065-01 / ............. -'EXISTING · , BUILDING · -'~' .......... ............... "' ....~ ......... - .... B'16 .... r- u THINNER TANK NORTH EXPLORATORY SOIL BORING NUMBER AND APPROXIMATE LOCATION OLD CORPORATION YARD BAKERSFIELD, CALIFORNIA CALE: ATE' NTS 9/29/87 )RAWN ~Y: BY: 1 of N°i The Twining Laboratories, Inc. FI~ESNO/MOOESTO //VISALIA//BA~,ERSFIELD ' OLD MiD IH BOOK _IT PAG~------------ OFF|CI.~I.. RF. cORDIS OF' KE;RN coUNTY, CA. hlFOIINIA cr'rY OF BAKERSFIELD CALIFORNIA EN GIN EERI NG D I='PARTM ENT DIIAWN CHI;CK~O /~LLE:y yAR~ .. ..... WA'RE RECORDED_._ ',19. IN BOOK JT PA(~E OFFICIAL. RE:CORDI OF KE:RN COUNTY. CXLIIrORNiA OLD DAT~ DNAWN CH[CKED j~P ~LC:C.I~ . · A~ 6 12 ® A,C., ,. 19------' Rr CoRDrD- IH loOK-- __ A"l' cITY OF BAKERSFIELD CALIFORNIA "" DEPARTMENT WAREHOUSE ./ PARKII~G SHED L ;PENSER 2ARKI~G SHED NORTH FILE CONTENTS SUMMARY Activity Date #.Of Tanks Comments RANDALL L. ABBOTT DIRECTOR DAVID PRICE 111 ASSISTANT DIRECTOR RESOURCE MANAGEMENT NCY Environmental Health Services Department STEVE McCALLEY, REHS, DIRECTOR Air Pollution Control District WILLIAM J. RODDY, APCO Planning & Development Services Department TED JAMES, AICP, DIRECTOR ENVIRONMENTAL HEALTH SERVICES DEPARTMENT April 18, 1991 City of Bakersfield 1501Truxtun Avenue Bakersfield; California~ 9330~ CLOSURE OF 8 UNDERGROUND HAZARDOUS SUBSTANCE STORAGE TANKS LOCATED AT 1612 "S" STREET IN BAKERSFIELD, CALIFORNIA. PERMIT # A387-15/1§0026 This is to advise you that this Department has reviewed the project results for the preliminary assessment associated with the closure of the tanks noted above. Based upon the sample results submitted, this Department is satisfied that the assessment is complete. Based on current requirements and policies, no further action is indicated at this time. It is important to note that this letter does not relieve you of further responsibilities mandated under the California Health and Safety Code and California Water Code if additional or previously unidentified contamination at the subject site causes or threatens to cause pollution or nuisance or is found to pose a significant threat to public health. changes in the present or proposed land use may require further assessment and mitigation of potential public health impacts. Thank you for your cooperation in this matter. MATERIALS SPECIALIST cc: Remaco, Inc. P. O. Box 10062 Bakersfield, CA 93389 2700 "M" STREET, SUITE 300 BAKERSFIELD, CALIFORNIA 93301 (805) 861-3636 FAX: (805) 861-3429 RANDALL L. ABBOTT DIRECTOR DAVID PRICE [] ASSISTANT DIRECTOR Environmental Health Se~ces De~rtment STEVE McCA! ! FY, REHS, DIRECTOR Air Pollution Control District WILUAM J. RODDY, APCO [:~annir~j & Development Se~ices Department TED JAMES, AiCP, DIRECTOR ENVIRONMENTAL HEALTH SERVICES DEPARTMENT April [8, ~99~ City of Bakersfield 1501 Truxtun Avenue Bakersfield, California 93301 ....... CLOSURE OF 8 UNDERGROUND HAZARDOUS SUBSTANCE STORAGE TANKS LOCATED AT 1612 "S" STREET IN BAKERSFIELD, CALIFORNIA. PERMIT # A357-15/150026 This is to advise you that this Department has reviewed the pro3ect results for the preliminary assessment associated with the closure of the tanks noted above. Based upon the sample results submitted, this Department is satisfied that the assessment is complete. Based on current requirements and policies, no further action is indicated at this time. It is important to note that this letter does not relieve you of further responsibilities mandated under the California Health and Safety Code and California Water Code if additional or previously unidentified contamination at the subject site causes or threatens to cause pollution or nuisance or is found to pose a significant threat to public health. Changes in the present or proposed land use may re.quire further assessment and mitigation of potential public' health impacts. Thank you for your cooperation in this matter. CARRIE GEORGI, HAZARDOUS MATERIALS SPECIALIST cc:~Remaco, Inc. P. O. Box 10062 Bakersfield, CA 93389. 2700 "M" STREET, SUITE 300 BAKERSFIELD, CALIFORNIA 93301 (805) 861-3636 FAX: (805) 861-3429 1700 Flower Street Bakersfield, California g3305-4198" Telephone (805) 861-3'621 KERN COUNTY HEALTH DEPART iT AIR POLLUTION CONTROL DISTRICT LEON M HEBERTSON, M.D. Director of Public Health Air Pollution Control Officer Rick Ambrose City of Bakersfield ...... Department of Public Works 4101Truxtun Avenue Bakersfield, CA 93309 January 18, 1988 Re: Tank abandonments #A355-20, A357-15 Dear Mr. Ambrose: This department has reviewed the site characterizations for the above tank abandonments. Based on the December, 1987, investigation results and assessments provided by Twining Laboratories, Inc. the department agrees the amount of contamination that remains at both sites is not a threat to groundwater or an imminent hazard to public safety. Based upon this information, the department agrees with both report recommendations provided by the contractor and will expect' those recommendations to be followed. If you do not agree with those recommendations, please contact me to discuss the matter. Otherwise, please contact me when the final capping of the sites ~s f~nished, BS:dr Sincerely, Bill Scheide EHS I cc: Twining Laboratories, Inc. 53o~ Office Park Dr., Suite 310 Bakersfield, CA 93309 GEOTECHNICAL ENGINEERING INVEsTiGATION .,SOIL CONTAMINATION ASSESSMENT FUEL STORAGE TANKS CITY OF BAKERSFIELD OLD CORPORATION YARD BAKERSFIELD, CALIFORNIA Presented to: City of Bakersfield Department of Public Works 1501 Truxtun Avenue Bakersfield, California 93301 Fresno Modesto Visalia Bakersfield 1.0 2.0 3.0 4.0 5.0 6.0 TABLE OF CONTENTS PAGE INTRODUCTION ...................................... ? .... 1 PURPOSE AND SCOPE OF INVESTIGATION. .................... 2 SAMPLING AND TESTING PROCEDURES ....................... 3 :RESULTS AND FINDINGS .................................. 5 4.1 Soil Profile ............................ . ............... 5 4.2 Groundwater Conditions ........................... 5 4.3 Results of Chemical Analysis ..................... 5' EVALUATION ............................................ 7 LIMITATIONS ........................................... 8 LIST OF APPENDICES: APPENDIX A - Logs of Borings A 1 - Explanation of ~reviations .................. LIST OF TABLES Table I - Soil Sample Laboratory Analysis LIST OF DRAWINGS Drawing No. 1 - Site Map and Boring Locations Fresno Modesto Visalia Bakersfield · Geotechmcal and Environmental Consultants · EngJneer~ng and ChemJcal Laboratories GEOTECHNICAL ENGINEERING INVESTiGATioN SOIL CONTAMINATION ASSESSMENT FUEL STORAGE TANKS ..... CITY OF BAKERSFIELD OLD CORPORATION YARD BAKERSFIELD, CALIFORNIA '1.0 .INTRODUCTION This report presents the results of additional investigative work performed for a contamination investigation of the soils beneath the area where four underground storage tanks were located at the City of Bakersfield Old Corporation Yard in Bakersfield California. The scope of our services were verbally authorized by Mr. Rick Ambrose of the City of Bakersfield Department of Public Works. Our initial report included background information concerning the project, a description of the investigative procedures used and the subsequent findings obtained, and our evaluation of the findings and related conclusions and recommendations. This- report presents the investigative procedures used and the subsequent findings obtained, and our evaluation of these findings. The appendix of this report contains the logs of the test borings. This additional investigative work war performed during November of 1987 by the Bakersfield Office of Twining Laboratories, Inc. The chemistry testing was performed by the Analytical Chemistry Division of Twining Laboratories Inc. located in. Fresno, California. [] 2527 Fresno Street · P.O. Box 1472 Fresno, California 93716 · (209) 268-7021 ID 1405 Granite Lane, Suite 1 Modesto, California 95351 · (209) 523-0994 9401 West Goshen Avenue Visalia, California 93291 · (209)651-2190 5301 Office Park Drive, Suite 310 Bakersfield, California 93309 -(805) 322-5216 TL 987-049-02 Page 2 2.0 PURPOSE AND SCOPE OF INVESTIGATION The purpose of this investigation was to substantiate the conclusion and recommendations regarding the extent 'of diesel 'and f~-ei oil contaminated soils at the Site formulated in our initial investigation in the area directly beneath the western most underground Storage tank'and in the area directly beneath the dispenser. A Summary of the actions taken during our investigation is outlined as follows: A meeting was held with Mr. Rick Ambrose of the City of Bakersfield Department of Public Works, Mr. Theodore Wright of Twining Laboratories and Mr. Bill Scheide of the Kern County Environmental Heal. th Department (KCHD) to discuss the findings obtained from our initial investigation and the concerns of the parties involved regarding the project. A work plan was developed and accepted by KCHD at this meeting for this additional invest- igative work.. 2. A site reconnaissance and field investigation were conducted. Laboratory tests were conducted on soil samples obtained from the project site. The data obtained from our field and laboratory investigations were evaluated to substantiate the conclusions and recommendations regarding the extent of diesel and fuel oil contaminated soils at the site formulated in our initial investigation. Fresno Modesto Visalia Bakersfield TL 987-0'49-02 Page 3 3.0 .SAMPLING AND TESTING PROCEDURES On November 12, 1987, two exploratory borings were drilled at the 10ca~'ions shown on Drawing No. 1. All field-~rill~g and e-~gineering services were provided by Twining Laboratories, Inc. personnel. ,~The boring locations were measured from existing site features using a measuring tape. The tank and dispenser locations had been identified by survey~ma~.kers installed by the 'City of Bakersfield ~'or our previous investigation. The exploratory borings were drilled using a Mobile B-40 drill rig equipped with 8 inch diameter, continuous flight hollow stem augers. Continuous logs of the soils encountered in the borings were recorded. Undisturbed soil samples were obtained from the borings at a depth beneath existing site grade of 5, 10, and 15 feet beneath the dispenser and 15, 20 and 25 feet beneath the underground tank. The boring beneath the dispenser was drilled at a slant of 6 degrees due to overhead obstructions. The boring was placed so that all samples were.within 'one foot horizontally of the indicated center of the dispenser. Each soil sample was obtained by pushing or driving a thin-walled steel sampler equipped with pre-cleaned brass tubes approximately 12 inches into the soil. The exploratory borings were loosely backfilled with the material excavated during the drilling operations. The soil samples obtained from the site were retained in the brass tubes. The ends of each brass tube were covered with aluminum 'foil and plastic- end caps, sealed with elect-~ical tape, ~and .... Fresno Modesto Visalia Bakersfield PARKING WAREHOUSE PARKING SHED OLD CORPORATION YARD BAKERSFIELD, CALIOFRNIA A/C PAVED -YARD AREA , B-5 + B-6 + B-10 AB ~ F r~-,-~LL~-- UEL oI~. TAm< B-i~ B-~_ PA~ING SHED ~B-18 B-lZ NORTH -- EXPLORATORY SOIL BORING NUMBER AND APPROXIMATE LOCATION ~ ~j~r ,ne ~w~ning TL '987-049-02° Page 4 immediately cooled to 4°C for shipment to our Fresno laboratory. Strict chain-of-custody procedures were followed during the transportation and handling of the soil samples. ~ The soil samples were received at our Fresno laboratory on November 12, 1987. Each soil sample was analyzed for the presence and concentration of the following constituents: Benzene Toluene Xylenes Total Petroleum Hydrocarbons - (Gasoline, No. 2 Diesel and Kerosene Standards). The constituents listed above are those items required by the Kern County Health Department for this assessment. The.analytical methods used during.our testing program were those approved by EPA and are presented as follows: Constituent Benzene, Toluene, Xylenes Total Petroleum Hydrocarbons SW-846: Test Methods SW-846: Methods 5020, 8020 SW-846: Methods 5020, 8020 Test Methods for Evaluating Solid Waste, Physical/ Chemical Methods, 2nd Edition, U.S. EPA, 1982. Fresno Modesto Visalia Bakersfield TL 987-04~-02 Page 5 4.0 RESULTS AND FINDINGS 4.1 Soil Profile: The soil prof~ie at the project site generally consists of 'silty sands to depths ranging from 10 to 15 feet underlain by poorly graded sands and sandy silts to the depths explored. Based on the rate of drilling, the soils were generally loose to medium dense. Visual observation indi-c~--e-~ ~h~ ~a~ural moisture content remained at moist conditions to a depth of 25.0 feet, the maximum depth explored. The foregoing is a general summar~ of the subsurface conditions encountered in the borings drilled for this investigation. Detailed descriptions of the soils encountered in the borings are presented on the logs of borings in Appendix A of this report. The stratification lines shown on the logs represent the approximate boundary between soil types; the actual in-situ transition may be gradual. 4.2 .Groundwater Conditions: Groundwater was not encountered in the borings drilled at the time of our field investigation (November 12, 1987). Groundwater information for the site is presented in our Geotechnical Engineering Investigation TL 987-49-00 performed for this project. 4.3 Results of Chemical Analysis: Table No. I presents the analytical results of the laboratory analysis of the soil samples obtained during this investigation. Fresno Modes{o Visalia Bakersfield TL 987-049-02 Page 6 · ' S m 1 Lb A '~.. T bl I - S -' -- '~'¥' I s o-p r op TVOH Ben Toulene Xylenes Benzene ~1 ~2 93 Date Depth, m z~ne m k m k m k m k Anal zed B-17 ~' 15 ND ND ND B-17 20 ND ND ND B-17 25 .- ND .... ND ......... ND B- 18 5 ND ND ND B-18 10 ND ND ND B-18 15 ND ND ND ND ND 12-09-87 2.4 ND 12-09-87 ND 12-09-87 ND 12-09-87 ND 12-09-87 ND ND ND ND ND ND ND ND 'ND 91 = Gasoline Standard 92 -- No. 2 Diesel Standard 93 = Kerosene Standard Fresno Modesto Visalia Bakersfield TL 987-049-02 Page 7 5.0 EVALUATION The purpose of this investigation was to substantiate the general extent of diesel contaminated soil'found in our ~previous investigation beneath the western most underground storage tank and the fuel dispenser.~ The test results of the soil samples selected for analysis obtained from the test borings drilled for the previous investigation revealed non-detectable concentrations of Ben'Zene and Xy~es and concentrations of Toulene and Total HydrOcarbons. This corresponds with the results found in this additional investigation. The only constituent found in our test samples was 2.4 mg/kg TVOH (No. 2 diesel standard reference) at a depth of 20 feet beneath the western most underground storage tank. Based on the results of the analysis of the soil samples obtained from our test borings and the depth of attenuation for the constituents at about 20 feet, it is our opinion that the general extent of diesel contaminated soil found in our previous investigation beneath the western most underground storage tank and the fuel dispenser is substantiated. Further, it is our opinion that the evaluation and conclusions formulated in our previous investigation TL 987-049-00 are substantiated by these results and ~that the recommendations presented in this investigation should be complied with. Fresno Modesto Visalia Bakersfield TL 987-049-02 page 8 6.0 LIMITATIONS The evaluation contained in this report and the conclusions, and recOmmendations contained in our previous-report ~TL-987-049-00 are based on the site conditions as they existed at the time of our investigation,, and further assume that probes, such as exploratory borings, are representative of the soil conditions at the site, i.e. ~the soil conditions everyWhere are nOt sign-ificantly different'from those disclosed by the probes. If different subsurface conditions from those encountered during our exploration are observed or appear to be present, we must be advised promptly so that we can review these conditions and reconsider our conclusions and recommendations where necessary. If there is a substantial lapse of time between the submission of our report and the start of additional work at the site, or if conditions have changed at~ or adjacent to the 'site, we recommend that our report be reviewed to determine the applicability of the conclusions and recommendations considering the changed conditions and time lapse. Our professional services were performed, our findings obtained and our recommendations prepared in accordance with generally-accepted engineering principles and practices. This warranty is in lieu of all other warranties, either expressed or implied. Fresno Modesto Visalia Bakersfield TL 987-049-02 Page 9 ~We appreciate the opportunity to be of service to the City of Bakersfield on this project. If you should have any questions regarding this report or if we can be of'further assistance, please contact our office. ~ THE TWINING LABORATORIES, INC. ~i~l,~~ 'C 3~7!0 /~/] '.~ Theodore D. Wright, RCE ~33710 (exp. 6-30-90) Engineering Manager Bakersfield Office TDW/km 3c: herewith B F Fresno Modesto Visalia Bakersfield TL 987-049.02 APPENDIX A Fresno Modesto Visalia Bakersfield .TL 987-049-02 A-1 APPENDIX A LOG OF BORINGS.. This appendix contains the final logs of borings. These logs represent our interpretation of the contents of the field logs and the results of the field tests. The boring logs and related information depict subsurface conditions only at these locations and at the particular time designated on' the · logs. Soil conditions at other locations may differ from conditions occurring at these boring locations. Also, the passage of time may result in changes in the soil conditions at these boring locations. In addition, an explanation of the abbreviations used in the preparation of the logs, and a description of the Unified Soils Classification System are provided. Fresno Modesto Visalia Bakersfield .TL 987-049-02 A-2 LRS LOGS OF EXPLORATIONS EXPLANATION OF ABBREVIATIONS Split barrel ring sampler, 2.5-inch I.D., for taking undisturbed samples. Fresno Modes%o Visatia Bakersfield CITY OF ..:LD OLD. CORPORATION YARD LOG OF BORING JOB No: 987-049-02 DRILL TYPE:_ B-40 DRILLED BY: T. Conley REMARKS: LOGGED BY: T.Wright CLASSIFICATION AND DESCRIPTi'ON "SAND',-Silty; moist,- fine t°' medium grained, light brown No.: B-17 SHEET No. 1 OF 1 LOCATION:_Center of western most tank. ELEVATION: DATE: TOP OF HOLE: -- FT. GROUNDWATER: __ STARTED:' 11-12-87 COMPLETED:'~ll=12_87 .- GRADATION INEERING PERCENT lES: AND NUMBER SILT, Sandy; moist, plastic, brown (ML) SAND, Poorly Graded; moist, fine to medium grained, tan (S~) Silt, Sandy; moist, non-plastic brown (ML) Bottom of Boring The Twining Laboratories, Inc. Vlsalla Fresno Modesto Bakersfield TLIO PROJECT: CITY OF ~~-LD . Hi No.: B-18 " o-YS-.c~o~~_~ s~,No. 1 OF 1 JOB No: qg7-'O49-02 LOCATION:. Center of Dispenser DR~LL TYPE: DRILLED BY: T, Conl'ey LOGGED BY: T,Wright ELEVATION: TOP OF HOLE: REMARKS: GROUNDWATER: -- DATE: STARTED: ' 11-12-87 COMPLETED: 11-12-87 ~ · ~"1--"' ~ ~ I--->' GRADATION ENGINEERING ~ '~ :'~' ' -- ~' PERCENT PROPERTIES: CLASSIFICATION AND DESCRIPTI'ON ~""~--c~-~z~ --::~ I- ~ --I-'" ~-x-- t~TAINED TEST, TYPE. AND - SAlxTD, $11t¥; molst, ~lne to .... medium graiDecl, brown ........... - ": - ;- ' ......... '" ' 5 ~ LRS - Becoming dark bro~, ~lner grainecl ', 15 -- LRS Bottom of Boring ~ ~ ~ Th~ Twining Labo~.ato~.ie$, Inc. ~ Vlsalla Fresno Mn~f~tn ~rsfleld TLI( ~ MAJOR DIVISIONS GRAVELS" (More than ,~ of coarse fraction · no. 4 sieve size) *SANDS (More than ,,~ of coarse - fraction <no. 4 sieve size) SILTS & CLAYS : LL < 50 "SILTS & cLAYs LL · 50 HIGHLY ORGANIC SOILS SYMBOLS GW GP GM GC SW SP SM SC ML CL OL MH CH OH Pt' ---.________ TYPICAL NAMES Well-graded gravels or gravel-sand mixtures, little or no fines Poorly graded gravels or gravel-sand mixtures, little or no fines Silty gravels, gravel-sand-silt mixtures Clayey gravels, gravel-sand-clay mixtures Well-graded sands or gravelly sands, little or no fines - Poorly graded sands or gravelly sands, little or no fines Silty sands, sand-silt mixtures _ Clayey sands, sand-clay mixtures Inorganic silts and very fine sands, rock flour, silty or clayey fine sands or clayey silts with slight plasticity Inorganic clays of Iow to medium plasticity, gravelly clays, sandy clays, silty clays, lean clays Organic silts and organic silty clays of Iow plasticity Inorganic silts, micaceous or diatomaceous fine sandy 0r"sil~ soils, elastic $i~ts Inorganic clays 6f high plasticity, fat clays Organic clays of medium to high plasticity, organic silty clay, organic silts Peat and other highly organic soils UNIFIED SOIL CLASSIFICATION SYSTEM COHESIVE Description very soft soft medium(firm) stiff very stiff hard SOILS Blows/ft. < z 2'4 5-8 16-30 > 3o GRANULAR SOILS Description very loose loose medium dense dense very dense Blows/ft. <5 5-1o 11-30 31 -5o > 50 CONSISTENCY CLASSIFICATION · CLASSIFICATION RANGE OF GRAIN SIZES Grain Type U.S. Standard Grain Size Sieve Size in Millimeters Boulders above 12" above 305 Cobbles 12" to 3" 305 to 76.2 Gravel 3" to no. 4 76,2 to 4,76 coarse (c) 3" to *Y, 76.2 to 19.1 fine (f) ~' to no. 4 19.1 to 4.76 Sand no. 4 to no. 200 4.76 to 0.074 coarse (c) no. 4 to no. 10 4.76 to ZOO medium (m) no. 10 to no. 40 2.00 to 0.420 fine (f) no. 40 to no. 200 0.420 to 0.074 Silt & Clay below no. 200 below 0.074 UJ 20 CL ~ ~ CH- 10 /'~ & 7 CL ML & OL 0 lO 20 30 40 50 60 70 80 90 100 LIQUID LIMIT PLASTICITY CHART GRAIN SIZE CLASSIFICATION CHKD. BY .. DATE '. NAME c...,,, ~..,- ~," NUMBER .... PROPOSAL FOR ADDITIONAL ENGINEERING INVESTIGATION UNDERGROUND FUEL STORAGE TANKS CITY OF BAKERSFIELD BAKERSFIELD ,, CALIFORNIA Presented to: City of Bakersfield Department of Public Works 4101 Truxtun Avenue Bakersfield, California 93309 November 11, 1987 P-~VIROI'~"~i'AL HF-.~.TH DIV Prepared by:. The Twining Laboratories, Inc. 5301 Office Park Drive, Suite 310 Bakersfield, California 93309 Fresno Modesto Visalia Bakersfield TABLE QF CONTENTS Page INTRODUCTI ON ........................................... BACKGROUND ............................................. igations .... Previous Invest ..... Nature of the Problem ............................ INVESTiGATiON " PURPOSE AND SCOPE OF ..................... TECHNICAL APPROACH ..................................... LIMITATIONS ............................................. CLOSING ................................................ 1 2 3 3 5 5 6 LIST OF DRAWINGS: Drawing No. 1 - Vicinity Map Drawing No. 2 -Proposed Sampling Locations Fresno Modesto Visalia Bakersfield *Geotechnicaland EnvironmentaIConsultants · Engineering and Chemical Laboratories PROPOSAL FOR ADDITIONAL ENGINEERING INVESTIGATION UNDERGROUND FUEL STORAGE TANKS BAKERSFIELD, CALIFORNIA INTRODUCTIQN ' we are pleased to have the opportunity to submit this proposal for an additional investigation at the Old Corporation Yard in Bakersfield, California. This proposal was prepared based upon a request from Mr. Rick Ambrose of the City of Bakersfield to meet the requirements of the Kern County Health Department, as outlined by Mr. Bill Scheide. A description of the site is presented in our proposal dated May 11, 1987, for this project. This proposal presents background information regarding this additional investigation, the purpose and 'scope of this investigation, our technical approach, and limitations. 2527 Fresno Street · P.O. Box 1472 Fresno, California 93716 · (209) 268-7021 1405 Granite Lane, Suite 1 Modesto, California 95351 · (209) 523-0994 9401 West Goshen Avenue Visalia. California 93291 · (209)651-2190 530i Office Park Drive, Suite 310 Bakersfield, California 93309 .(805) 322-5216 City of Bksfld. P .lc Works November 11, 1987 Page 2 .......................... The _following .seqti°ns c°ntain a_description of previous investigations and the nature of the problem. Previ6us investigations: On March 26 and 27, 1987, two soil samples ..... - ..... ~ ..... /~were.obtained .by ._others _a.t~-depths -of .2..~feet-and----6 feet beneath inverts of the abandoned underground storage tanks and the fuel · dispenser- These samples' were analyzed for the presence' and concentration of selected constituents- In general, the analytical results revealed varying concentrations of benzenes and total hydrocarbons at 2 feet and 6 feet beneath the tanks and dispenser. Borings were then advanced by our firm in accordance with our technical approach presented in our 'proposal dated May 11, 1987. Samples.were retrieved and tested for Total Petroleum Hydrocarbons (for Diesel) in accordance with the requirements of the Hazardous Materials Laboratory. The results of these tests revealed concentrations of petroleum hydrocarbons ranging from 140 part per million (ppm) to non-detectable limit. Fresno Modesto Visalia Bakersfield OLD COtLPOliATION YARD BAKERSFIELD, CALIFORNIA VICINITY MAP NTS O~AWN ~y: APPROVED OLD CORPORATION YARD NORTH The Twining Laboratari es, Inc. ;R~N~/~dOOESTO /vlSALi~/'9~.xE~SFtEL£ City of Bksfld. Public Works November 11, 1987 Page 3 ~ature of the Problem: The area of concern was expressed by Mr. Bill Scheide of the Kern County Health Department, Environmental Health Division at a meeting between Mr. Rick Ambrose and Mr. Larry Jamieson of the City of Bakersfield, Mr. Scheide and Mr. Theodore Wright of the Twining Laboratories, Inc., on November 4, 1987. Mr. Scheide ~. -- expressed concern regarding the area directly beneath the dispenser for the fuel oil tank and directly beneath the western most 1,Q00 gallon Diesel Tank . The initial samples taken when the tank and dispenser were excavated indicated Total Petroleum Hydrocarbons ranging from non-detectable to 11,621 ppm. Therefore, he requested that 2 additional borings be advanced in these areas. pURPOSE AND SCOPE OF INVESTIGATION The objectives of the proposed engineering investigation are presented below: Determine the existence and concentration of selected constituents in the soils in the area beneath the un- derground storage tank and th'e fuel dispenser. Should contamination be present, evaluate the findings to determine if adequate information has been developed by this investigation to define the general vertical and lateral extent of contaminate migration in the area of the underground storage tanks and fuel dispenser. This is a preliminary investigation. After the findings of this investigation have been reviewed, further investigation may be necessary to develope additional information regarding the extent of contaminate migra- tion and concentrations in the soil. Fresno Modesto Visalia Bakersfield City of Bksfld. P% November 11, 1987 ~ic Works Page 4 If adequate information has been developed by this investigation, address clean-up alternatives and dis- cuss possible~mitigation measures which could he,nder- taken. The general scope of this investigation, which is deemed necessary to achieve the. above referenced objectives, is as follows: Using a drilling rig, drill down to a maximum depth of 25 feet below the surface at the underground tank and 15 feet at the dispenser. -. Obtain undisturbed soil samples at intervals of 5 feet starting at a depth of 15 feet at the tank location and 5 feet at the dispenser location and continuing to a maximum depth of 25 feet at the tank and 15 feet at the dispenser. Analyze soil samples in the laboratory for the presence and concentration of selected constituents. Evaluate the data produced during the investigation to determine, if possible, the general extent of the con- stituent migration in the soil. Fresno Modesto Visalia Bakersfield ~ity of Bksfld. P~ ic Works November 11, 1987 Page 5 ~CHNICAL APPROACH .~ Our .Technical Approach would be essentially the same. as presented in our proposal dated May 11, 1987, except for the boring locations and depths. One boring is to be advanced at the approximate center the western most Diesel Tank. This _boring will be advanced ..to a depth of 25 feet beneath the existing site grade. Samples will be retrieved at 15, 20, and 25-feet beneath existing site grade. A second boring is required directly beneath the dispenser for the fuel oil tank. Due to the location of the dispenser adjacent to 2 buildings, slant borings will be required to retrieve samples directly beneath the dispenser. Samples will be retrieved at 5, 10 and 15 feet beneath existing site grade. The boring locations are presented on Drawing No. 2. LIMITATIONS This proposal assumes that sampling locations will be accessible to our personnel and equipment at the time of our field exploration and can be readily located in the field from existing site features. Cost incurred in making locations accessible will be charged at cost plus 15 percent. This extra cost has not been included in the estimated budget. Your prior approval will be requested should this Fresno Modesto Visalia Bakersfield We shall not be responsible for damage to underground utilities or other installations unless they are accurately shown on-'the-plans made available to us prior to our field operations. ~,--Thank you for the opportunity to present this proposal-'and ......... express our inter.est in working with the City of Bakersfield on this project. If you have any questions, please contact our office. Sinc er ely, THE TWINING LABORATORIES, INC. Theodore D. Wright, RCE Engineering Manager Bakersfield Office TDW/km 3c: herewith lc: B · ,." Ir:,: WE ARE SENDING YOU [)i~ttached [] Under separate cover via the following items: f-I Drawings [] Specifications ~ Plans [] Samples [] Copy of letter [] Invoices [] [] Brochures [] Copy of Report ~'!: · .' , ..' :,. .. COPIES DATE NO. . DESCRIPTION .- . THE~E ARE TRANSMITTED as checked below: [] For approval [] Approved as submitted [] Resubmit ~;~ For your use [] Approved as noted [] Submit [] As requested [] Returned for corrections [] For Signature o [] For review and comment [] copies for approval copies for distribution -- REMARKS If enclosures are not as noted, kindly notify us at once. [] 2527 Fresno Street Fresno, CA 93721 (209) 268-7021 [] 1405 Granite Lane, Suite 1 Modesto, CA 95351 (209) 523.0994 [] 9401 W. Goshen Avenue Visalia, CA 93277 (209) 651-2190 ~.5301 Office Park Drive, Suite 310 Bakersfield, CA 93309 (805) 322-5216 · NUMBER .. ~u.~-~ ~/~'"'~,~-Y-~¢'7-. ~.~ ,o..,./ o~ ~ CHKD. BY__ OATE BY . DATE CHKD. BY -DATE SUBJECT PROJECT NUMBER ,SHEET NO. OF .. PROJECT N~ · SCAL£: DATE = DRAWN BY: APPROVED DRAWING No. of The Twining L(3bor(3tories, Inc. FRESNOJMODES TO JVl SAL IAJBAI<ERSFIELD i PROJECT No. · SCALE: DRAWN BY: DATE: APPROVED BY: NO. of The Twining Laboratories, Inc. FRESNO/MOOESTO/VI SAL IA~R~KERSFIEI..O OATE CHKD. BY~ DATE PROJECT PROJECT NAME NUMBER SUBJECT SHEET NO. OF~ · Geotechnical and Environmental Consultants ' · Engineering and Chemical Laboratories October 1, 1987 City of Bakersfield Department of Public Works 1501~Truxtun Avenue Bakersfield, CA 93301 Attn 'Mr'.'"R~ck Ambrose RE: OLD CORPORATION YARD THINNER TANK Examinationf -987,.065_01 In accordance with 'the request of the Kern County Health Departmeht, one exploratory boring was advanced at the center of the previously removed thinner tank at the above referenced site. This boring was advanced to a depth of 20 feet, and was located at the center of the tank as identified by a survey marker placed by your personnel. Samples were taken at 15 feet and 20 feet beneath existing site grade. As requested by the Kern County ~ealth Department, the sample at 15 feet was tested for Benzene and Methylene Chloride. The results of these tests are presented on the following pages. We appreciate the opportunity to be of service to you on this project. If you should have any questions regarding this information, please contact our office. Sincerely, THE TWINING LABORATOP~ES, INC. Theodore D. Wright, RCE 933710 Engineering Manager Bakersfield Office TDW/km 2c: herewith - Kern County Health Department - 2527 Fresno Street · P.O. Box 1472 Fresno, California 93716 · (209) 268-7021 1405 Granite Lane, Suite 1 Modesto, California 95351 · (209) 523-0994 [] 9401 West Goshen Avenue Visalia, California 93291 · (209)651-2190 5301 Office Park Drive, Suite 310 Bakersfield, California 93309 -(805) 322-5216 ~ity of Bakersf TL 987-065-01 Page 2 For: Sample-. Rece iv~d: Identifications: City of Bakersfield Soil Ted Wright B-16, 14.5' - 15.0' Compound Sample Benzene, Total, mg/kg as received .(SW-846: Methods 5020,8015) Methylene Chloride, ug/kg as received (SW-846: Methods 5020,8010) MDL ............ ~ ............ .05 0.05 MDL : mg/kg as received: None detected at or above MDL Method Detection Limit Milligram per Kilogram as received SW-846: Test [~?ethods for Evaluation Soi!id Waste, Physical/ Chemical M~thods, 2nd Edition, U.S. EPS, 1982. Fresno Modesto ~/iSalia Bakersfield ~ HO ~' B-16 of BAKERSF%E~D SHE~ N~'. I OF 1 ~ JOB No: TL987-049-00 L0CATION:,,,See Site Map DR~LL TYPE: Mobile B-61 DRILLED BY: R, Lawrence LOGGED BY: T. Wright ELEVATION: TOP OF HOLE: - - REMARKS: Center of thinner tank GROUNDWATER: - - DATE: STARTED: 7/02/87 COMPLETED: 7./02/87 ~ ~ > GRADATION ENGINEERING f ~'~ = ~ ~ -- m PERCENT PROPERTIES- m CLASSIFICATION AND DESCRIPTION ~- z~ ~ ~ ~ m -- RETAINED FEST, TYPE AND ~ .. ~ ~ o o =-- ~ ~' ~LATE NUMBER _ $~ND, Silty, moist, fine to medium grained, BroTM ......... (SM) ...... ~ 5 -- Becoming light brown 10-- 15 -- SAND, Poorly Graded, moist, fine LR: _ to medium grained, tan (SP) , 20 -- LRS' Bottom of Boring _ - - Vlsalia Fresno Mo~esto Sa~erstield TL1C EXISTING BUILDING B-16 THINNER TANK EXPLORATORY SOIL BORING NUMBER AND APPROXIMATE LOCATION NORTH Geotechnicaland Environmental Consultants · Engineering and Chemical Laboratories September 29, 1987 City of Bakersfield Department of Public Works 1501.Truxtun Avenue Bakersfield, 'CA 93301 Attn: Mr. Rick Ambrose Old Corporation Yard Tank Excavation Backfill Bakersfield, California In accordance with.your request, we have reviewed our recommendations for backfilling of the entire tank excavations with engineered fill for the above mentioned project. You inquired if backfilling the top five feet of the excavations would accomplish the des ired effect. From an environmental viewpoint, we believe that backfilling only the top five feet with engineered fill would be satisfactory to Prevent a conduit for surface runoff into the excavated area. However, should any future development take place in this area, the excavated area would need to be entirely removed and replaced as engineered fill. Otherwise, high settlements could occur. Futhermore, any distress occurring in the pavements in these areas should be immediately repaired, and positive drainage to drain surface run-off away from the backfilled area should be maintained so that water is not allowed to pond in these areas. The remainder of our recommendations should remain the same. We. appreciate the opportunity to be of service to you on this project. If you should have any questions regarding this matter, please contact our office. THE TWINING LABORATORIES, Theodore D. Wright, RCE Engineering Manager Bakersfield Office [] 2527 Fresno Street · P.O. Box 1472 Fresno, California 93716 · (209) 268-7021 TDW/km . [] 9401 West Goshen Avenue Visalia, California 93291 · (209)651-2190 [] 1405 Granite Lane, Suite 1 i~l 5301 Office Park Drive, Suite 310 Modesto, California 95351 · (209) 523-0994 Bakersfield, California 93309 '(805/322-5216 ,. Since 1898 Geotechnical and Environmental Consultants · Engineering and Chemical Laboratories · September 29, 1987 City of Bakersfield Department of Public Works 1501 ~Truxtun Avenue Bakersfield, CA 93301 Attn: Mr. Rick Ambrose Old Corporation Yard Tank Excavation Backfill Bakersfield, California In accordance with your request, we have reviewed our recommendations for backfilling of the entire tank excavations with engineered fill for the above mentioned project. You inquired if backfilling the top five feet of the excavations would accomplish the desired effect. From an environmental viewpoint, we believe that backfilling only the top fige feet with engineered fill would be satisfactory to prevent a conduit for surface runoff into the excavated area. However, should any future development take place in this area, the excavated area would need to be entirely removed and replaced as engineered fill. Otherwise, high settlements could occur. Futhermore, any distress occurring in the pavements if these areas should be immediately repaired, and positive drainage to drain surface run-off away from the backfilled area should be maintained so that water is not allowed to pond in these areas. The remainder of our recommendations should remain the same. We appreciate the opportunity to be of ser.vice to you on this project. If you should have any questions-regarding this matter, please contact our office. Theodore D. Wright, RCE Engineering Manager Bakersfield Office [] 2527 Fresno Street · P.O. Box 1472 Fresno, California 93716 · (209) 268-7021 THE TWINING LABORATORIES, INC. _. TDW/km 9401 West Goshen Avenue Visalia, California 93291 · (209)651-2190 1405 Granite Lane, Suite 1 i~ 5301 Office Park Drive. Suite 310 Modesto. California 95351 · (209) 523-0994 Bakersfield, California 93309 .(805) 322-5216 1700 Flower Street Bakersfield, California 93305 Teleph?ne (805) 861-3636 KERN COUNTY HEALTH DEPARTME~I~t ENVIRONMENTAL HEALTH DIVISION HEALTH OFFICER Leon M Hebertson, M,D. DIRECTOR OF ENVIRONMENTAL HEALTH Vernon S. Reichard April 20, 1987 City of Bakersfield Attn: Gary Rauch 1501Truxtun Avenue Bakersfield, California 93201 RE: SITE ASSESSMENT AT OLD CITY CORPORATION YARD. Dear Mr. Rauch: Upon review of the recently submitted laboratory results from your facility, we have determined that the extent of the contamination has not been adequately defined at several locations. The levels of contamination are siMnificantly above our action levels, therefore you are required by the Kern County Underground Tank Ordinance, Chapter 5, Section 3912.5.03, to further define the vertical and horizontal extent of the contamination plume, assessment We suggest that you contact your environmental contractor and submit a plan for further assessment and mitigation of the contamination. I you wish to arrange for a meeting to discuss our requirements, please call me at (805) 861-3636. Sincerely, Mark J. Pishinsky Environmental Health Specialist Hazardous Materials Management Program MJP:sw DISTRICT OFFICES Delano . Larnonf · ; ;)ke Isabella Mojave Ridcjecrest . Shafter · Taft ./ . ._5 c_b q~ - . C), r....) ,, --?r_2 o UNDERGROUND STORAGE TAi~K~UNAUTHORIZED RELEASE ( ' K)/CONTAMINATION SITE REPORT 'LEA E'flERGENC[~*'N HAS STATE OFFICE OF EMERGENCY S ~.TE TANK ID ~- REPORT DATE LOCAL CASE ~ REGIONAL BOARD CASE ~ ,,~3 5'7- 13 · .ME OF IND REPRESENTING ~ LOCAL AGEN, ~ OTHER COMPANY OR AGENCY NAME ~ OWNER/O.ERATOR ~ REGIONAL BOARD ~- ~0 ~ ~ STREET NAME CITY '" CONTAC~ PERSON . STREET US EPA ID /~ STATE '~ ~ ZIP CITY- :* STATE ZIP OPERATOR LOCAL AGENCY REGIONAL BOARD TSCD ( ) CAS ~/ (ATTACH EXTRA SHEET iF NEEDED) NAMI DATE DISCOVERED HOW DISCOVERED [] iNVENTORy CONTROL 7 Y [] ROUTINE MONITORING ~-~'"~'ANK '[~] SUBSURFACE MONITORING u[._J REMOVAL ~ NUISANCE CONDITION'~ ,._~_~j OTHER: DATE DISCHARGE BEGAN · Y~ NKNOWN E CONTENTS ~ REPLACE TANK ~CLOSE TANK HASDISCHARGE BEEN STOPPED.'/ [~Pl PI N G LEAK AGE~ YRS. [] UNKNOWN MATERIAL [~'~ E E L [] FIBERGLASS []OTHER F_~_.~OTHE~(SPECIFY) RESOURCES AFFECTED YES NO THREATENED UNKNOWN A,R (VAPOR) [] so,L (VAOOSE ZO.E) ~ [] ELl [] GROUNDWATER [] [] E] $~RFACE WATER ORSTORM DRA,N [] [] [] OTHER (SPECIFy) EL] [] [] [] .. GROUNDWATER BASIN NAME COM~4ENTS: ~ UNKNOWN QUANTITY LOST (GALLONS) ~UNKN0W~ ~UNKNOWh '"-]OVERFILL [] CORROSION []RUPTURe'FA,LURE E-)SpiLL ~U NKNOWN [] OTHER ~lE AFFECTED YES NO ENED KNOWN WELLS PUBLIC DRINKING WATER [] [] ~l I~ _ PRIVATE DR'INKING WATE. [] [] [] I~ 'NDUSTRIAL E3 [] ~ [D ^OR'CULTURAL [] [] [] ~ OTHER~S.~C,.) ~ ~ ~ COMPLETE AND ATTACH A CLEANUP TRACKING REPORT IF ANy CLEANup WORK OR PLANNING HAS STARTED .1sc os ()0/8~) COLES SERVICES ' 1212 QUINCY ST. BAKERSFIELD CA 93305 PHONE (805) 328-7750 Waste Oil Hauler ADDRESS . '~ '" CONTACT PERSON: uNIT QTY. UNIT DESCRIPTION PRICE : AMOUNT Wanspo~er Signature ~ TOTAL FGL ENVII ONMENTAL ~NALYTICAE CHEMISTS CLIENT: BC Laboratories 4100 Pierce Rd. Bakersfield, CA 93308 LAB. NO.: 77955-1 ....... SAMPLE I.D.' 5435, Soil DATE REPORTED: 4/8/87 DATE RECEIVED: 3/24/87 DATE ANALYZED: 4/2/87 REPORT OF GC/MS Compound ~ Benzene Bromodichloromethane ND Bromoform ND Bromomethane ND Carbon Tetrachloride ND Chlorobenzene ~D Chloroethane ND 2-Chloroethylvinyl ether ND Chloroform ND Chloromethane ND Dibromochloromethane ND 1,2-Dichlorobenzene ND 1,3-Dichlorobenzene ND 1,4-Dichlorobenzene ~ ND 1,1-Dichloroethane ND 1,2-Dichloroethane ND ANALYSIS FOR VOLATILE ORGANICS IN WATER (EPA 8240) Detection Limit *33 *33 *33 *33 *33 *33 *67 *33 *33 *33 *33 *33 *33 *33 *33 Detection Limit Compound ~ ~3 1,1-Di chl oroethene .. trans-l,2-Dichl oroethene ND *33 1,2-Dichloropropane ND *33 ci s-l,3-Dichl oropropene ND .*33 trans-l,3-Di chl oropropene ND *33 Ethyl Benzene .. ~.?ND *33 Methylene Chloride .- 'ND "133 1,1,2,2-Tetrachl oroethane ND *33 Tetrachl oroethene ND *33 Toluene ND *33 1,1,1-Trichl oroethane ND *33 1,1,2-Tri chl oroethane ND *33 Tri chl oroethene ND *33 Tri chl orofluoromethane ND *33 Vinyl Chloride ND *67 *: less than ND : Not Detected Res pectful 1 y submitted, ffohn F. Quinn, Ph.. Environmental Chemist JFQ:cem MAIN ()1:1:1(:1']-- S53 (i()RI'()RATI()N STI~.EI.:T--I'.(). I',( )X '27'2 FIEI.I)()FFI(;E-- & I.A I',( )R,,VI ( )l,Uf S..\ N' i'..\ i,.\ U L.%, C..\I.I F( )RN I :\ t ",~ "ii -~ r2 7'2 & LAB()RAT()RY ~s, )5 ~ 525:824.-- (SO5) I;.',9-09 l t~ 717 BRIi)(;E S'I REE'F ( ~( )1 .L'S:\, ( ;..\1 .I FORN IA 95932 (glt;I ' FGL ENVIRONMENTAL ANALYTICAL CHEMISTS CLIENT: BC Laboratories 4100 Pierce Rd. Bakersfield, CA 93308 LAB. NO.: 77955-2~. .. ' SAMPLE I.D.: 5436, Soil DATE REPORTED: 4/8/87 DATE RECEIVED: 3/24/87 DATE ANALYZED: 4/2/87' REPORT OF GC/MS ANALYSIS FOR VOLATILE ORGANICS  Detection Limit Compoun~ ~ ~-~ ~enzene Bromodichloromethane . ND *33 ND *33 Bromoform ND *33 Bromomethane Carbon Tetrachloride ND *33 Chlorobenzene ND *33 Chloroethane Nb *33 2_Chloroethylvinyl ether ND *67 Chlorofom ND *33 Chloromethane ND *33 Dibromochloromethane ND *33 1,2.Dichlorobenzene ND *33 1,3-Dichlorobenzene ND *33 ND *33 1,4-Dichlorobenzene 1,1-Dichloroethane ND *33 1,2-Dichloroethane ND *33 IN WATER (E_.~PA 8240) ' Detection Limit ~oroethene ~ ~3 ' trans_l,2-Dichloroethene ND *33 ND *33 1,2-Dichloropropane cis.l,3-Dichloropropene ND *33 trans.l,3-Dichloropropene ND *33 ND *33 Ethyl Benzene Methylene Chloride 1170 '133 1,1,2,2-Tetrachloroethane ND *33 Tetrachloroethene ~ ND *33 ND *33 Toluene 1,1,1-Trichloroethane ND *33 ND '33 1,1,2-Trichloroethane Trichloroethene ND *33 Trichlorofluoromethane ND *33 Vinyl Chloride ND *67 * = less than ND = Not Detected JFQ:cem Respectful ly submitted, uinn, Ph.D. Environmental Chemist : ' ?. :" '.: :~ '--' ..... MAIN ~FFIC~41~ PIERCE ROAD, BAKERS ' BAKERSFIELD ., ........... ~ . , . ~ ........... ~ ..... .-~ ... ........ ~, 8~ · 'p-Xylene Yg/g ' -' : '.'-. ....... ~m-Xylene none detected O. 10 -. o-Xylene ... 0,10 .. ~1 To~al Petroleum Hydrocarbons ~/~ 11~81.8~ 10.00 MODIFIED EPA 8015: DRY MATTER BASIS COMMENTS: PETROLEUM HYDROCARBONs: Quantification of volatile hydrocarbons present (C1 to C30) utilizing a Diesel Factor. As outlined by the.California D.O.H.S. These petroleum hydrocarbons are in addition to the constituents specifically defined on thi's report. TOTAL PETROLEUM HYDROCARBONS: The sum total of all [non-chlorinated] constituents on this report. Analyst CHEMICAL A~ALY~ ORATORIES PETROLEUM' J' 'J' EGJ. IN. lEG. CHEM. ENGR .... . :~':- - - ...-..~ ." .., ~-' ' 3-~?-e? "~:.."-' ~ ...... ' -~-~-e? ~...;-' ' .' ~,..... .... : ,~'::~ .: ' .:-'. ~ '~ - . '. . .. . .. . ',<... -: ,.*:~ '~,.. .' .. .. * . · . . ~.-:' . : - , ... CO~ENTS: ,~H[~ S~PLE 'DOES NOT EXH[B[T~,THE CHROmaTOGRaPHIC . FINGERPRINT OF DIESEL P~ ~H[CH IS UTILIZED ~S OUR DIESEL .. PETROLEU~ HYDROCARBON ST~ND~RD. .. PETROLEUM HYDROCARBONS: Quantification of volatile hydrocarbons present (C1 to C30) utilizing a Diesel Factor. As outlined by the California D.O.H.S. Analyst CHEMICAL A~IALYS~ . I NC. - PETROLEUM · - · "*,'-':';~ ;~, i!~:?~"5~,.~, i'.('.'-'~ ,.---:.. ,, MAIN OFFIC~ 4100 PIERCE ROAD, BAKERSFIELD, CA. 93~8 pHoNE 327-4911 · . · u~E Benzene Hg/g Toluene Ethyl Benzene p-Xylene ' Hg/g .m-Xylene Hg/g o-Xylene ~"'~'"' ~'~':~""':'~'~'"~"'"' ~g/g "~" Isopropyl Benzene ~g/g Petroleum Hydrocarbons ~g/g · ', ',:..:5.58. ......:', i~:, '. .. none detected -.,.;~. · " none detected none detected none detected 'none 'detected none detected 3e83.1E 0.10 0.10 0.10 0.10 0.10 0.10 0.10 10.00 Total Petroleum Hydrocarbons Fg/g 3e88.?0 10.00 MODIFIED EPA 8015: DRY MATTER BASIS COMMENTS: PETROLEUM HYDROCARBONS: Quantification of vo'latile hydrocarbons present (C1 to C30> utilizing'a Diesel Factor. As outlined by the California D.O.H.S. These petroleum hydrocarbons are in addition to the constituents specifically defined on this report. TOTAL PETROLEUM HYDROCARBONS: The sum total of all [non-chlorinated] constituents on this report. Analyst' '°LCT"~ILr0'M . - J. J. I-Gl. IN, REG. CHEM. ENGII. - _ . ,.. ' ' ' ~: ~:"'::'"~" :' :'" - ' '" ¥ '~ 'MAIN OFFICE: 4100 PIERCE ROAD. BAKERSFIELD, CA. 93308PHoNE 327-4911 · , :..":~,,<":~,..:. ,..,.. ' .. - ._ -: ', ~... -..-. .. ' '" ' ':'i/:'.'- ::: · :. :-:":':' '.'-' . ":' ':".'"' ..... --' 7:1'-::::"'.:..:::: i::?:::::: :. :',. SOILS EN"~:NEERING ATTN:TONY_F~:~NGiE > :.:,,.:.,.: :. '" '-'" ':; .... ~:..-',';..: ; '< '~ ' ~: ::;::,DATE :SAMPLE ::::.- ,[.. :.:: '.:' "~:.',:': :::';'.?~": DATE ANALYsiS SAMPLE'"'~OL£E~TED: :: ::': ' :" ~:"'-:':'RESEIVED e L '. .... ...--., ........ . .......... " ' ·: ' ' ' :- ,': '" .' ..... '" :"' '." "' : .' "' '7" ~' -" ::-':~ :": ,t~.:7, :~,: :,,:.':,.:::~,::.:'~"~ ::?.?.:::::~:>~ ::... · - - ---":'.". "; :: -- -" , .... ' ' ' :~':-': -J-~: Level ~nz~n~ .'; '. ~ ....,::..': . ?--..'... .. ."~-... . ', .... -.. ..... : ..,; ,~:.:. :.:..-:?~:: _ . ..... :, . ' '. ,~ ,'. ":. :. ~g/ ..... :,'.: , ' '. ..... '.. :':" ~,~,'. :.':~...">,-~.L.:-/:~:':-. -<:." ' ::,.To luene .... ~, ....:,,¥ ~:~::~.. .g -,~, -.v'-.,: -.-': .~ none detect~ ::::- ':",~:~:i'-~:~:::~"?:¥: Ethyl Benzene - , ::-:' .- .~ ~ . .-:. - ':-. - none dete~t~ :: ,"~:":'?~::~"i '-~ p-Xyl~ne- ';:":m-Xylene o-Xylene '-Isopropyl Benzene Petroleum Hydrocarbons Total Petroleum Hydrocarbons Hg/g none detected 0.10 'none"detected ~"'~%~'~':':~'0. none detected none detected '.: ..0.10 none detected :'10..00 none detected 10.00 MODIFIED EPA 8015: DRY MATTER BASIS COMMENTS: PETROLEUM HYDROCARBONS: Quantification of volatile hydrocarbons present (C1 to C30) utilizing a Diesel Factor. As outlined by the Cal:fornia D.O.H.S. These petroleum hydrocarbons are in addition to the constituents specifically defined on this report. TOTAL PETROLEUM HYDROCARBONS: The sum total of all [non-chlorinated] constituents on this report. ................... . ........... Analyst 'CHEMICAL ANALYSIS Pt'TROLEU¥ LABORATORIES J. J. [-Gl. IH, REG. CHEM. ENGil. '*. ~...i ! '-.' MAIN OFFICE: 4100 PIERCE ROAD, BAKERSFIELD, CA. 93308 PHONE 327-4911 .:.:. :':Purgeable Aromatics *~-.,...'' ':-.'.'-. ','.::..: .... :... (SOIL) .': . . · , -~*" :::::'ii*~!'::':' SOILS ENGINEERING ATTN:TONY FR~NGIE Date of ~:**..~.*~ · ~901 'H" '~STREET-. .... :~,/ .: ::~.:-.. ~... REPORT:4-2-8~ ,. ':.'.::., :,~:~:' BAKERSFIELD, CA ':'~3301 '~::~'"'.~:':~": '.;-'. '~ .: LAB No :5581 '*~ ~ .. .~, ~,~,. ,,. ,, ~ ..... :~ ~ ....... ~ ? v' '.~,~ :, ~.- ~ :'."~*- .:**~ * ?'> .~ ?"':?*, '. '~ .,: -~" .~ .... C* C - :?' ,~,'&::;- ~: ?~T~.~L~.~'~ ..... ~.?. *~.~,~i:~ :,:~. , ~ .~..~ . · .... ,~: :. :.: -. .. :., .:-... .:., -,, ~ '...,' . : .~ ,. '*~, .... ..., ,::-:,?~?:..~:?r~,..~ DATE ~ ~*~"~:'~ ':-':~: .... ·" : ''*'~ ...... : ..... '~ :?DATE SAMPLE . ~ ~ - :' ~ DATE ANALYSIS' :,~:::'-~ SAMPLE COLLECTED:'... '''~' ~-. J'::~RECEIVED · LAB: .. *, . · .. COMPLETED: :,h-.~4~.:::'~: :'.' ": ~. L'..'~.~ ~ .Repor~ lng Aop lysi s :Reporting Const i'~uen~ Un1 ~s Resu 1 ~s .... Leve .. .. ,~ .:,,.'.~ .:~ :.., . . :.,.Benzene .~- HG/g none detected -'..* ,'0.10 '*~ ~'Toluene : .. . Hg/9 . none detected "~-;~:0.10 ,. ~ '~Ethyl Benzene " Hg/9 none detected 0.10 p-Xylene Hg/g none de~ec~ed "0.10 m-Xylene yg/g ~ none de~ec~ed _0-10 ..... o-Xylene ~ ~g/g none de~ected 0.10 ~sopropyl Benzene pg/g none de~ected 0.10 Petro leu~ Hydrocarbons Hg/~ none de~ec~ed 10.00 Total Petroleum Hydrocarbons ~g/g none detected 10.00 MODIFIED EPA 8015: DRY MATTER BASIS COMMENTS: PETROLEUM HYDROCARBONS: Quantification of volatile hydrocarbons present (C1 to C30) utilizing a Diesel Factor. As outlined by the California D.O.H.S. These petroleum hydrocarbons are in addition to the constituents specifically defined on this'report. TOTAL PETROLEUM HYDROCARBONS: The sum total of all [non-chlorinated] constituents on this report. By Analyst INC. -. J. J. EGI, IN. REG. CHEM. ENGI. "L'-.- MAIN OFFICE: 4100 PIERCE ROAD, BAKERSFIELD, CA. 93308 PHONE 327-4911 · . ,'.: ..:- "': /Purgeable Aromatics SOILS~01 H ' STREET ~%,~'~:'~ ~:...,'!?~,~, ~ .. ~ .' ~' . ' '. -~'~:~.~REPORT.4-2-8? ~mr~: ~=~--~..,:?;/~:~;~..'.., · :.'~.~', ::,: ,, .: ,~- .... ,.. ' ~, .. i' ~: .,~' -~-~._ '~, ~,-~ ? 'z~,.;{~..c~ ':~ ~',~ ~,~:_Y-~.'.' ~ . .~- - ~'- .... . ~" .'i. * '"? :Constituent ~ =, i. . Units . - ~-:..~..~ Results · ?... ,Le~e.~ 'Benzene ~'~ '~.i.':'"'~. ~ . .;~'- Hg/g : ', :~ .~'~'"~,~:~'e"~detected ,'.?:-~.~. 0-10 '~'Toluene -?"{ ~.'?: ...... ~i~-.~ ~g/g :~' ~.:~..t.-'~:;.~;~?none '-detected 'i' i.' "~0.10 ' = · . ' jig/g none 'detec ted jig/g . ....- ......... ,~..~.~,~,,~_.~:.~none ..detec ted jig/g none detec ted jig/g none detected jig/g '~6.58 'Ethyl Benzene p-Xylene , m-Xylene .,:...,...: ...... o-Xyiene Isopropyl Benzene Petroleum Hydrocarbons 0.10 0.10 0.10 0.10 0.10 10.00 ~6.58 10.00 Total Petroleum Hydrocarbons MODIFIED EPA 8015:. DRY MATTER BASIS COMMENTS: PETROLEUM HYDROCARBONS: Quantification of volatile hydrocarbons present (C1 to C30) utilizing a Diesel Factor. As outlined by the California D.O.H.S.' These petroleum hydrocarbons are in addition to the constituents specifically defined on this report. TOTAL PETROLEUM HYDROCARBONS: The sum total of all [non-chlorinated] constituents on this report. Analyst ANAL PETitOLETIM ATORI J. J. EGI. IN, REG. ~CHEM. ENGll. #2 500 GALLONS FUEL OIL ·TANK 92' DATE . · ' .....'DATE SAMPLE 'SAMPLE'-.:CDLLECTED: · ..... ': >~-~ 'j '.' iRECE I VED @ LAB: 3-86-87 '3-~6-87 ' .... ' · MAIN OFFICE: 4100 PIERCE ROAD, BAKERSFIELD, CA. 93308 PHONE 327-4911 ' Constituent Reporting Analysis Units Results .Hg/g Hg/g .Hg/g Wg/g ...Wg/g Hg/g ~g/g wg/g Benzene Toluene Ethyl Benzene g-Xylene ~m-Xylene o-Xylene Isopr0p¥1 Benzene Petroleum Hydrocarbons Total Petroleum Hydrocarbons Hg/g 0.27 none detected none detected none detected none detected none detected none detected none detected none detected .- : .Minimum -"~- ~-r Rep o r t ing · "- .... Leve 1 .: .... 0.10 ':¥," 0.10 _'0. lO 0.~0 .0 · '"0. l0 0.10 .... lO,.O0 lO.O0... ,::. ,. MODIFIED EPA 8015: DRY MATTER BASIS COMMENTS: -' PETROLEUM HYDROCARBONS: Quantification of volatile hydrocarbon~ present (C1 to-C30) utilizing a Diesel Factor. As outlined by the California D.O.H.S. TheSe petroleum hydrocarbons are in addition to the constituents specifically defined on this report. TOTAL PETROLEUM HYDROCARBONS: The sum total of all [non-ohiorinated] constituents on this report. . - Analyst ' MAIN OFFICE: 4100 PIERCE ROAD, BAKERSFIELD, CA.13308 PHONE 327-4911 :DATE -DATE SAMPLE ...... ''' ~' ..... ':" ...... " -:MinimUm Constituent Units .Results ..' ..} >:~LeveI. Benzene Toluene Ethyl ~enzene p-×ylene m-Xylene o-Xylene isopropyl Benzene Petroleum Hydrocarbons iTotal Petroleum Hydrocarbons LABORATORIES "" Hg/g 0~32 ; '0.i0 Hg/g none detected 0.10 Hg/g none detected ':---:O.iO Hg/g none detected -!0.10 ~g/g none detected '.'.0.10 ~g/g none detected 0.10 ~g/g none detected 10.00 ~g/g none detected .1'0.00' MODIFIED EPA 8015: DRY MATTER BASIS COMMENTS: PETROLEUM HYDROCARBONS: Quantification of volatile hydrocarbons present (C1 to C30) utilizing a Diesel Factor. As outlined by the California D.O.H.S. These petroleum hydrocarbons are in addition to the constituents . · specifically defined on this report. ..;... TOTAL PETROLEUM HYDROCARBONS: The sum 'total of all [non-chlorinated] constituents on this report. ~J~J.~Eglin Analyst.' LABORATORIES ,,,,c. J. J. EGLIN, REG. CHEM. ENGR. MAIN OFFICE: 4100 PIERCE ROAD, BAKERSFIELD, CA. 93308 PHONE 327.4911 _Purgeable Aromatics -- (sOI'L) SOILS ENGINEERING ATTN:TONY FRANGIE 2901 "H" STREET BAKERSFIELD, CA. 93301 Sample Description: PROJECT 5052-D #3 BELOW DISPENSER OF 500 GALLON FUELOIL TANK DATE DATE SAMPLE SAMPLE COLLECTED: RECEIVED @ LAB: 3-86-8? 3-86-8? Date of REPORT:4-1-8? .LAB No.:5439 DATE ANALYSIS COMPLETED: 4-1-87 Constituent Minimum Reporting Analysis Reporting Units Results Level Benzene ~g/g none detected 0.10 Toluene ~g/g none detected 0.10 Ethyl Benzene ~g/g none detected 0.10 p-Xylene ~g/g none detected 0.10 m-Xylene ~g/g none detected 0.10 o=Xylene ~g/g none detected 0.10 Isopropyl Benzene ~g/g none detected 0.10 Petroleum Hydrocarbons ~g/g none detected I0.00 Total Petroleum Hydrocarbons ~g/g none detected 10.00 MODIFIED EPA 8015: DRY MATTER BASIS COMMENTS: PETROLEUM HYDROCARBONS: Quantification of volatile hydrocarbons present (C1 to C30) utilizing a Diesel Factor. As outlined by the California D.O.H.S. These petroleum hydrocarbons are in addition to the constituents specifically defined on this report. TOTAL PETROLEUM HYDROCARBONS: The sum total of all [non-chlorinated] constituents on this report. .- _ By .... f/J.d/j. ~E~glin ............................................................................... Analyst ' -' PETII~LEUM LABORAT RI J J EGLIN lEG CHEM MAIN OFFICE: 4100 PIERCE ROAD, BAKERSFIELD, CA. 03300 PHONE 327'4911 ... < . . ..... DATE DATE SAMPLE' DATE ·ANALYSIS' "':/.~ {'. Rep o r t ~ ng ~na J y s ~ s L: ':':~:- Rep ort ~ ng Ethyl Benzene ~g/g none detected' "" -'..'0.10. p-Xyiene Hg/g none detected J:'0.10 m-Xylene ~g/g , none detected " ".0.~0 Isopropyl Benzene ~g/g none detected ?... .---:0. Petroleum Hydrocarbons ~g/g ~080.00- "10..00 Total Petroleum Hydrocarbons ~g(g .. MODIFIED EPA 8015: DRY MATTER BASIS "' COMMENTS:..· PETROLEUM HYDROCARBONS: Quantification of volatile hydrocarbons present (C1 to.C30) utilizing a Diesel Factor. As outlined by the California D.O.H.S. These petroleum hydrocarbons are in addition to the constituents specifically defined on this report. TOTAL PETROLEUM HYDROCARBONS: The sum total of a~l [non-chlorinated] ' constituents, on this report. B y _-.% l i n .............................. ~ ........... .......................................................... Anal.yst -~--.-- ...../" .... CH£A~ICA~ ANAL YSIS P6TI~OL£1/M LABORATORIES. nc. J. J. E~LIN, R~. CHFd~ ENGE. 4100 PIERCE RD., BAKERSFIELD, CALIFORNIA 93308 PHONE 327-491 Soils Engineering 2901 H Street .......... Bakersfield,. California`. .93301..- ATTN: Tony Frangie Date Reported: 04/13/87 ....... Date ~eceived: 04/06/87 ........ Laboratory No.::--6354 .... Sample 'Description: TOTAL EXTRACT CONTAMINANTS BY ACID DIGESTION -- Total Metals ~ m~/k~ 500 gallon waste oil tank, sample #20 at 2' ..... Title 22 Method Reference TTLC, mg/k~ 'Antimony 7040 1 500. Arsenic 7061 1 500. Barium 7080 1 10000. Beryllium 210.1 2 75. Cadmium 7130 1 100. Chromium 7190 1 2500. Cobalt 291.1 2 8000. Copper ~ 220.1 2 2500. Lead (-) 2.5 7421 1 1000. Mercury 7471 1 20. Molybdenum 246.1 2 3500. Nickel 7520 1 2000. Selenium 7741 1 100. Silver 7760 I 500. Thallium 279.1 2 700. Vanadium 286.1 2 2400. Zinc 289.1 2 5000. Cyanides 9010 1 Phenols 420.1' 2 Sulfides 9030 1 Fluorides 340.2 2 Hexavalent Chromium 7196 1 Oil & Grease (-) 20. pR 9040 1 Pensky-Martens Flash Point 1010 1 PCB's 8080 1 TOX (-) 20. 9020 I Comment: (1) (2) All contaminants reported above are in mg/kg (unless otherwise stated) on an as received (wet) sample basis. Results reported represent totals (TTLC) as sample subjected to appropriate techniques to determine total levels. (-) refers .to !'less than".. "Test Methods for Evaluating Solid Wastes", SW 846, July, 1982. "Methods for Chemical Analysis of Water and Wastes", EPA-600, 14-79-020 B C LABORATORIES, INC. AGRICLIL TUllE C~IEAIICA~ A~AL Y$15 PETROLELI~ LABORATORIES, InC. -- J. J. EGLIN, REG. CHEM. ENGR. 4100 PIERCE RD., BAKERSFIELD, CALIFORNIA 93308 PHONE 327-4911 Date Reported: ....... Date Received: .'-" ::Laboratory No.:- Soils Engineering ........ =.2901. H Street .... Bakersfield, Calif°rnia ~93301 ATTN: Tony Frangie TOTAL EXTRACT CONTAMINANTS BY ACID DIGESTION Sample Description: 500 gallon waste oil tank, sample #21 at 6' -'' ........ Title'22" Method Reference 7040 i 7061 1 7080 1 210.1 2 7130 1' 7190 1 291.1 2 220.1 2 7421 1 7471 1 246.1 2 7520 1 7741 1 7760 1 279.1 2 286.1 2 289.1 2 9010 1 420.1 2 9030 1 340.2 2 7196 1 9040 1 1010 1 8080 1 9020 1 Total Metals~ mg/kg An t imo ny Arsenic Barium Beryllium Cadmium Chromium Cobalt ~ Copper Lead (-) 2.5 Mercury Molybdenum Nickel Selenium Silver Thallium Vanadium Zinc Cyanides Phenols Sulfides Fluorides Hexavalent Chromium Oil & Grease 35. pH Pensky-Martens Flash Point PCB ' s T0X (-) 2O. 04/13/87 04/06/87 TTLC~ mE/kg 500. 500. 10000. 75. 100. 2500. 8000. 2500. 1000. 20. 3500, 2000. 100. 500. 700. 2400. 5000. Comment: Ail contaminants reported above are in mE/kg '(unless otherwise stated) on an as received (wet) sample basis. Results reported represent totals (TTLC) as sample subjected to appropriate techniques to determine'total levels. ~- '(-) refers'to'"less than"~ (1) "Test Methods for Evaluating Solid Wastes", SW 846, July, 1982. (2) "Methods for Chemical Analysis of Water and Wastes", EPA-600, 14-79-020 B C LABORATORIES, INC. ,?'_ ,?. .. SOILS ENGINEERING, April 7, 1987 INC. '~'~- File 86-5052-D Kern County Department of P~blic Health Division of Environmental Health 1700 Flower Street Bakersfield, CA. 93305 Attention: Subject: Gentlemen: Mark Pishinsky Preliminary Site Assessment for Underground lanks at the Old City Corporation Yard located at 1612 "S" Street, Bakersfield, CA. Permit #A-357-15 We have performed a preliminary site assessment at the subjec~ si~e consisting of soil sampling and laboratory testing in accor- dance with the requirements of Kern County Health Department Hand- book Ul 30. Soil samples were retrieved at two (2.0) and six (6.0) feet below the bottom of the underground ~anks and dispensers at ~he subject site.' Soil samples were obtained by our representative ~n accordance with E.P'.A. sampling procedure. Soil samples were placed in clean glass jars, stored on ice and delivered to the laboratory for the ~esting outlined in the permit. Results Soil samples test results show detection at the following loca- tions: Sample 3 at 6.0 ft. below the dispenser of the 500 gal- 'lon fuel tank next to the parking shed. Samples 13 and 1~ at 2.0 ft. below the 1000 gallon die- 2901 H STREET · BAKERSFIELD, CALIFORNIA 93301 · PHONE (805) 327-7065 Preliminary S'ite Assessment UndergroUnd tanks at the Old City Corporation Yard SOILS ENGINEERING, INC. File 86-5052-D April 8, 1987 Page 2 sel tanks. If.you have any-questions regarding the contents of this letter, please feel free to contact us. Respectfully submitted, SOILS ENGINEERING, INC. R.C.E. 39549 exp. 12/31/89 lF:hk .attachments cc: Remaco, Attn: Pat Mulhofer OLD C~F~Ft~i~ATION YAF~ ~:~ I~P 12 ® A.6. R£r'C)RDrD tN ~OOK__ AT II)AGT CALIFORNIA A6IIIL~IL TURE ~' t'~TIIOLEUN ~ J J EGLIN IEEG CHEM ENGR MAIN OFFICE: 4100 PIERCE ROAD, BAKERSFIELD, CA. 93308 PHONE 327-49i 1 Purgeable Aromatics (SOIL) SOILS ENGINEERING ATTN:TONY FRANGIE 8901 "H" STREET BAKERSFIELD, CA. 93301 Sample Des'cription: PROJEOT 5058-D ~8 500 GALLONS FUEL OIL TANK @8' Date of REPORT:4-1-8? LAB No.:5437 DATE - .................. SAMPLE COLLECTED: 3-86-83 Constituent DATE SAMPLE RECEIVED @ LAB: 3-86-83 Reporting Analysis Units Results DATE ANALYSIS .COMPLETED: 4-1-87 Minimum Reporting Level Benzene ~g/g 0.2? 0.10 Toluene Ng/g none detected 0.10 Ethyl Benzene Hg/g none detected 0.10 p-Xylene Hg/g none detected 0.10 m-Xylene ~g/g none detected 0.10 o-Xylene Hg/g none detected 0.10 Isopropyl Benzene ~g/g none detected 0.10 Petroleum Hydrocarbons ~g/g none detected 10.00 Total Petroleum Hydrocarbons ~g/g none detected 10.00 MODIFIED EPA 8015: DRY MATTER BASIS COMMENTS: PETROLEUM HYDROCARBONS: Quantification of volatile hydrocarbons present (C1 to C30) utilizing a Diesel Factor. As outlined by the California D.O.H.S. These petroleum hydrocarbons are in addition to the constituents specifically defined on this report. TOTAL PETROLEUM HYDROCARBONS: The sum total of all [non-chlorinated] constituents on this report. Analyst £HEMICAL AId,4L Y~ PETROLEUM LABORATORIES J. J. EGIIN, REG. CHEM. ENGR. MAIN OFFICE: 4100 PIERCE ROAD. BAKERsFiELD, CA. 93308 PHONE 327.4911 Purgeable Aromatics (SOIL) SOILS ENGINEERING ATTN:TONY FRANGIE 2901 "H" STREET BAKERSFIELD, CA. 93301 Sample DesCription: PROJECT 5052-D #2 500 GALLONS FUEL OIL TANK @6' DATE - ~_ SAMPLE COLLECTED: 3-26-87 DATE SAMPLE RECEIVED @ LAB: 3-26-83 Constituent Date of REPORT: 4-1-87 LAB No. :5438 Reporting Analysis Units Results ....... DATE ANALYS'iS=~--~=~i COMPLETED: Minimum Reporting Hg/g Benzene Level Toluene Wg/g 0.38 0.10 Ethy'l Benzene Hg/g none detected 0.10 p-Xylene Hg/g none detected 0.10 m-Xylene Wg/g none detected 0.10 o-Xylene Hg/g none detected 0.10 Isopropyl Benzene Hg/g none detected 0.10 Wg/g none detected 0.I0 Petroleum Hydrocarbons ~g/g none detected 10.00 Total Petroleum Hydrocarbons none detected 10.00 MODIFIED EPA 8015: DRY MATTER BASIS COMMENTS: PETROLEUM HYDROCARBONS: Quantification of volatile hydrocarbons present (C1 to C30) utilizing a Diesel Factor. As outlined by the California D.O.H.S. These petroleum hydrocarbons are in addition to the constituents specifically defined on this report. TOTAL PETROLEUM HYDROCARBONS: The sum total of all [non-chlorinated] constituents on this report. Analyst CIIE¥1CAL AI~AL )'~ PETROLEUM LABORATORIES MAIN OFFICE: 4100 PIERCE ROAD, BAKERSFIELD, CA. 93308 PHONE 327-491 ~ Purgeable Aromatics ....... (SOIL) _. SOILS ENGINEERING ATTN:TONY FRANGIE 8901 "H" STREET BAKERSFIELD, CA. 93301 Sample DeScription: PROJECT 5052-D ~3 BELOW DISPENSER OF 500 GALLON FUEL~ TANK @2' DATE DATE SAMPLE '- SAMPLE COLLECTED: RECEIVED @ LAB: 3-26-8? 3-26-8? Date of REPORT:4-1-8? LAB No.:5439 DATE ANALYSIS COMPLETED: 4-1-87 Constituent Minimum Reporting Analysis Reporting Units Results Level Benzene Toluene Hg/g none detected 0.10 Hg/g none detected 0 10 Ethyl Benzene - Wg/g . p-Xylene none detected 0.10 Bg/g none detected 0.10 m-Xylene Hg/g none detected 0.10 o-Xylene Hg/g none detected Isopropyl Benzene 0.10 ~g/g none detected 0.10 Petroleum Hydrocarbons Hg/g none detected 10.00 Total Petroleum Hydrocarbons Hg/g none detected 10.00 MODIFIED EPA 8015: DRY MATTER'BASiS COMMENTS: PETROLEUM HYDROCARBONS: Quantification of volatile hydrocarbons present (C1 to C30) utilizing a Diesel Factor. As outlined by the California D.O.H.S. These petroleum hydrocarbons are in addition to the constituents specifically defined on this report. TOTAL PETROLEUM HYDROCARBONS: The sum total of ali [non-chlorinated] constituents on this report. Analyst LABORATORIES J. ,i. EGLIN, IIEG. CHEM. ENGR. MAIN OFFICE: 4100 PIERCE ROAD, BAKERSFIELD, CA. 93306 PHONE 327-4911 Purgeable Aromatics (SOIL) SOILS ENGINEERING ATTN:TONY FRANGIE 8901 "H" STREET BAKERSFIELD, CA. 93301 Sample Description: pROJECT 5052-D ~3 BELOW DISPENSER OF 500 GALLON FUEL8~- TANK @6' DATE SAMPLE ~ - -' '_;DATE " ' ..... ' .... RECEIVED ~ LAB: SAMPLE COLLECTED: 3-86-8? 3-86-8? Constituent Reporting Units Hg/g Benzene Hg/g Toluene Hg/g Ethyl Benzene Hg/g p-Xylene Hg/g m-Xylene Hg/g o-X¥1ene Hg/g Isopropyl Benzene Petroleum Hydrocarbons Hg/g Total Petroleum HydrocarbonS Hg/g Date of REPORT:4-1-8? LAB No.:5qqO DATE ~ANALYSIS · ' - COMPLETED: ~-1-87 Minimum Analysis Reporting Level Results 35.80 0.10 none detected .0.10 none detected 0.10 none detected 0.10 none detected 0.10 none detected 0.10 none detected 0.10 2080.00 10.00 8115.80 10.00 MODIFIED EPA 8015: DRY MATTER BASIS COMMENTS: PETROLEUM HYDROCARBONS: Quantification of volatile hydrocarbons present (C1 to C30) utilizing a Diesel Factor. As outlined by the California D.O.H.S- These petroleum hydrocarbons are in addition to the Constituents specifically defined on this report. TOTAL PETROLEUM HYDROCARBONS: The sum total of all [non-chlorinated] constituents on this report. Analyst £NE~I~4L APML I~1~ LABORATORIES J. J. EGilN, REG. CHEM. ENGR. MAIN OFFICE: 4100 PIERCE ROAD, BAKERSFIELD, CA. 93308 PHONE 327-4911 Purgeable Aromatics (SOIL) SOILS ENGINEERING ATTN:TONY FRANGIE 2901 "H" STREET BAKERSFIELD, CA. 93301 Sa~mple Description: JOB 5052-D ~4- 1000 GALLON GASOL.INE~.TANK @2' DATE SAMPLE COLLECTED: 3-26-8? DATE SAMPLE RECEIVED @ LAB: 3-26-8? Date of REPORT:3-30-8? LAB No.:5441 DATE ANALYSIS COMPLETED: 3-2?-8? Constituent Minimum Reporting Analysis Reporting Units Results Level Benzene ~g/g none detected 0.10 Toluene ~g/g none detected 0.10 Ethyl Benzene ~g/g none detected 0.10 p-Xylene ~g/g none detected 0.10 m-Xylene ~g/g none detected 0.10 o-Xylene ~g/g none detected 0.I0 Isopropyl Benzene ~g/g none detected 0.10 Petroleum Hydrocarbons ~g/g none detected 5.00 Total Petroleum Hydrocarbons Hg/g none detected 5.00 CALIFORNIA D.O.H.S. 5020/8020: DRY MATTER BASIS COMMENTS: PETROLEUM HYDROCARBONS: Quantification of volatile hydrocarbons present (C1 to C20) utilizing a Gasoline Factor. As outlined by the California D.O.H.S. These petroleum hydrocarbons are in addition to the constituents specifically defined on this report. TOTAL PETROLEUM HYDROCARBONS: The sum total of all [non-chlorinated] constituents on this report. Analyst CNE¥1CAL ANAL Y~ PETROLEUM LABORATORIES ,,,,c. J. J. EGI. IN, IIEG. CHEM, ENGII. MAIN OFFICE: 4100 PIERCE ROAD, BAKERSFIELD. CA. 93309 PHONE 327-4911 Purgeable AromaTics (SOIL) SOILS ENGINEERING ATTN:TONY FRANGIE 2~01 "H" STREET BAKERSFIELD, CA. 93301 Sample Description: JOB 5052-D #A 1000 GALLON GASOLINE TANK @6' DATE DATE SAMPLE SAMPLE COLLECTED: RECEIVED @ LAB: 3-26-8? 3-26-8? Date of REPORT:3-30-8? LAB No.:5442 DATE ANALYSIS COMPLETED: 3-27-87 Constituent Minimum RePorting Analysis Reporting Units Results Level Benzene Ng/g none detected 0.10 Tol.uene ~g/g none detected 0.10 Ethyl Benzene Hg/g none detected 0.10 p-Xylene Ng/g none detected 0.10 m-Xylene Hg/g none detected 0.10 o-Xylene ~g/g none detected 0.10 Isopropyl, Benzene ~g/g none detected 0.10 petroleum Hydrocarbons ~g/g none detected 5.00 Total Petroleum Hydrocarbons ~g/g none detected 5.00 CALIFORNIA D.O.H.S. 5020/8020: DRY MATTER BASIS COMMENTS: PETROLEUM HYDROCARBONS: Quantification of volatile hydrocarbons present (C1 to C20) utilizing a Gasoline Factor. As outlined by the California D.O.H.S. These petroleum hydrocarbons are in addition to the constituents specifically defined on this report. TOTAL PETROLEUM HYDROCARBONS: The sum total of ail [non-chlorinated] constituents on this report. Analyst ~L~ CI4E~IGAL A~L4L I~ P£TflOLELII~ BORA'T'ORIES J. J. EGLIN, REG. CHEM. ENGR. MAIN OFFICE: 4100 PIERCE ROAD. BAKERSFIELD, CA. 93308 PHONE 327-491 Purgeabie Aromatics (SOIL) SOILS ENGINEERING ATTN:TONY 2~01 "H" STREET BAKERSFIELD, CA. 93301 FRANGIE Date of REPORT:3-30-8? LAB No.:5443 Sample Description: 'JOB 5052-D ~ '#5 1000 GALLON GASOLINE TANK @2' DATE DATE SAMPLE DATE ANALYSIS SAMPLE COLLECTED: RECEIVED @ LAB: COMPLETED: --'~,", 3-86-8? 3-86-8? 3-8?-8? Minimum Reporting Analysis Reporting Constituent Units Results Level Benzene ~g/g none detected 0.10 Toluene Hg/g none detected 0.10 Ethyl Benzene ~g/g none detected 0.10 p-Xylene Hg/g none detected 0.10 m-Xylene ~g/g none detected 0.10 o-Xylene Hg/g none detected 0.10 Isopropyl Benzene ~g/g none detected 0.10 Petroleum Hydrocarbons Hg/g none detected 5.00 Total Petroleum Hydrocarbons Hg/g none de~ected 5.00 CALIFORNIA D.O.H.S. 5080/8080: DRY MATTER BASIS COMMENTS: PETROLEUM HYDROCARBONS: Quantification of volatile hydrocarbons present (C1 to C20) utilizing a Gasoline Factor. As outlined by the California D.O.H.S. These petroleum hydrocarbons are in addition to the constituents specifically defined on this report. TOTAL PETROLEUM HYDROCARBONS: The sum total of all [non-chlorinated] constituents on this report. Analyst CIIE~,IICAL ANAL PETROLEUM ORATORI J. J. EGLIN. REG. CHEM. ENGII. INC. MAIN OFFICE: 4100 PIERCE ROAD, BAKERSFIELD, CA. 93308 PHONE 327-4911 Purgeable Aromatics (SOIL) S ENGINEERING ATTN:TONY FRANGIE "H" STREET BAKERSFIELD~ CA. 93301 Sample Description: JOB 5052-D 5 1000 GALLON 'GAsoklNE'TANK @6-' ..... DATE · DATE SAMPLE SAMPLE COLLECTED: RECEIVED @ LAB: 3-26-87 3-26-8? Reporting Analysis Constituent Units Results Date of REPORT:3-30-8? LAB No.:5444 DATE ANALYSIS COMPLETED: .. 3-27-8? Minimum Reporting Level Benzene Hg/g none~detected 0.10 Toluene Hg/g none detected 0.10 Ethyl Benzene Hg/g none detected 0.10 p-Xylene Hg/g none detected 0.10 m-Xylene ~g/g none detected 0.10 o-Xylene ~g/g none detected 0.10 Isopropyl Benzene Hg/g. none detected 0.10 Petroleum Hydrocarbons Hg/g none detected 5.00 Total Petroleum Hydrocarbons Hg/g none detected 5.00 CALIFORNIA D.O.H.S. 5020/8020: DRY MATTER BASIS COMMENTS: PETROLEUM HYDROCARBONS: Quantification of volatile hydrocarbons present (C1 to C20) utilizing a Gasoline Factor. As outlined by the Califofnia D.O.H.S. These petroleum hydrocarbons are in addition to the constituents specifically defined on this report. TOTAL PETROLEUM HYDROCARBONS: The sum total of all [non-chlorinated] constituents on this report. Analyst Cl~lllC41 LABORATORIES J- J. EGEIN, REG. CHEM. ENGR. ' MAIN OFFICE: 4100 PIERCE ROAD, BAKERSFIELD, CA. 93308 PHONE 327-491 Purgeab le Aromatics (SOIL) ....... SOILS ENGINEERING ATTN:TONY FRANGIE 2901 "H" STREET ~AKERSFIELD, CA. 93301 Sample Description: JOB 5052-D #6 SOUTH OF ISLAND @2' DATE SAMPLE COLLECTED: DATE SAMPLE 3-26-87 RECEIVED @ LAB: 3-26-8? Date of REPORT:3-30-87 LAB No.:5445 DATE ANALYSIS COMPLETED: 3-2?-8? Constituent Benzene Toluene ~g/g Ethyl Benzene ~g/g p-Xylene ~g/g m-Xylene ~g/g O-Xy)ene ~g/g Isopropyl Benzene ~g/g Petroleum Hydrocarbons Hg/g ~g/g TOtal Petroleum Hydrocarbons Reporting Units ~g/g Analysis Results none detected none detected none detected none detected none detected none detected none detected none detected none detected CALIFORNIA D.O.H.S. 5020/8020: DRY MATTER BASIS COMMENTS: Minimum Reporting Level 0.10 0.10 0.10. 0.10 0.10 0.10 0.10 5.00 5.00 PETROLEUM HYDROCARBONS: Quantification of volatile hydrocarbons-present (C1 to C20) utilizing a.Gasoline Factor. As outlined by the California D.O.H.S. These petroleum hydrocarbons are in addition to the constituents specifically defined on this report. TOTAL PETROLEUM HYDROCARBONS: The sum total of ail [non-chlorinated] Constituents on this report. Analyst C#~¥1CAZ AAC4~ ~ PETItOI EU~ LABORATORIES J. J. EGLIN, lEG. CHEM."ENGIL MAIN OFFICE: 4100 PIERCE ROAD, BAKERSFIELD, CA. 93308 PHONE 327-4911 Purgeabie Aromatics (SOIL) SOILS ENGINEERING ATTN:TONY FRANGIE 2901 "H" STREET BAKERSFIELD, CA. 93301 Sample DesEriptiOn: JOB 5058-D ~6 SOUTH OF ISLAND @6' DATE DATE SAMPLE SAMPLE COLLECTED: 3-86-8? RECEIVED @ LAB: 3-86-8? Constituent Reporting Units Date of REPORT:3-30-8? LAB No.:5446 Analysis Results DATE ANALYSIS COMPLETED: .. 3-87-87 Minimum Reporting Level Benzene ~g/g none detected 0.10 Toluene ~g/g none detected 0.10 Ethyl Benzene ~g/g none detected 0.10 p-Xyiene ~g/g none detected 0.10 m-Xylene ~g/g none detected 0.10 o-Xylene ~g/g none detected 0.10 Isopropyl Benzene ~g/g none detected 0.10 Petroleum Hydrocarbons ~g/g none detected 5.00 Total Petroleum Hydrocarbons ~g/g none detected 5.00 CALIFORNIA D.O.H.S. 5080/8020: DRY MATTER BASIS COMMENTS: PETROLEUM HYDROCARBONS: Quantification of volatile hydrocarbons present (C1 to C20) utilizing a Gasoline Factor. As outlined by the Ca-lifornia D.O.H.S. These petroleum hydrocarbons are in addition to the constituents specifically defined on this report. TOTAL PETROLEUM HYDROCARBONS: The sum total of all [non-chlorinated] constituents on this report. Analyst Cti£MIC,41 A4blL ~ PETROLEUM J. J. EGLIN, KG. CHEM. ENGII. MAIN OFFICE: 4100 PIERCE ROAD, BAKERSFIELD, CA. 93308 PHONE 327-4911 Purgeable Aromatics (SOIL) SOILS ENGINEERING ATTN:TONY FRANGIE 2901 "H" STREET. BAKERSFIELD, CA. 93301 Sample DesCription: JOB 5052-D #? MIDDLE OF ISLAND @2' DATE SAMPLE COLLECTED: 3-26-87 DATE SAMPLE RECEIVED @ LAB: 3-26-87 Constituent Reporting Units Date of REPORT:3-30-8? LAB No.:5447 DATE ANALYSIS COMPLETED: 3-27-e? i Minimum Analysis Reporting Results Level Benzene Hg/g none detected 0.10 Toluene Hg/g. none detected 0.10 Ethyl Benzene Hg/g none detected 0.10 p-Xylene' Hg/g none detected 0.10 m-Xylene Hg/g none detected 0.i0 o-Xylene Hg/g none detected 0.10 Isopropyl Benzene Hg~g none detected 0.10 Petroleum Hydrocarbons ~g/g none detected 5.00 Total Petroleum Hydrocarbons Wg/g none detected 5.00 CALIFORNIA D.O.H.S. 5020/8020: DRY MATTER BASIS COMMENTS: PETROLEUM HYDROCARBONS: Quantification of volatile hydrocarbons present (C1 to C20) utilizing a Gasoline Factor. As outlined by the California D.O.H.S. These petroleum hydrocarbons ~are in addition to the constituents specifically defined on this report. TOTAL PETROLEUM HYDROCARBONS: The sum total of all [non-chlorinated] constituents on this report. ~y ........... AnaI¥*st ................ CHE~IC4~ ANALYSIS P~T~OZ~U~ ORATORIES j. J. EGLIN, REG. CHEM. ENGI. MAIN OFFICE: 4100 PIERCE ROAD, BAKERSFIELD, CA. 93308 PHONE 327-4911 Purgeable Aromatics (SOIL) SOILS ENGINEERING ATTN:TONY FRANGIE 8901 "H" STREET BAKERSFIELD, CA. 93301 Sample Description: JOB 5052-D #8 NORTH OF ISLAND @2' DATE DATE SAMPLE SAMPLE COLLECTED: RECEIVED ~ LAB: 3-26-8? 3-26-89 Constituent Reporting Units Date of REPORT:3-30-87 LAB No.:5448 Analysis Results DATE ANALYSIS COMPLETED: 3-e7-87 .. ...' Minimum Reporting Level Benzene Hg/g none detected .0.10 Toluene Hg/g none detected 0.10 Ethyl Benzene ~g/g none detected O.lO p-Xylene ~g/g none detected 0.10 m-Xylene ~g/g none detected 0.10 o-Xylene Hg/g none detected 0.10 Isopropyl~ Benzene Hg/g none detected 0.10 Petroleum Hydrocarbons Hg/g none detected 5.00 Total Petroleum Hydrocarbons Hg/g none detected 5.00 CALIFORNIA D.O.H.S. 5020/8020: DRY MATTER BASIS COMMENTS: PETROLEUM HYDROCARBONS: Quantification of volatile hydrocarbons present (C1 to C20) utilizing a Gasoline Factor. As outlined by the California D.O.H.S. These petroleum hydrocarOons are in addition to the constituents specifically defined on this report. TOTAL PETROLEUM HYDROCARBONS: The sum total of all [non-chlorinated] constituents on this report. Analyst A$1IICUZ ~ PETI~OIEU¥ LABORATORI J. J. EGLIN, lEG. CHEM. ENGJ INC. MAIN OFFICE: 4100 PIERCE ROAD, BAKERSFIELD, CA. 93308 PHONE 327-4911 Purgeable Aromatics (-SOIL) SOILS ENGINEERING ATTN:TONY FRANGIE 2901 "H" STREET BAKERSFIELD, CA. 93301 Sample DesCription: JOB 5052-D ~8 NORTH OF ISLAND @ 6' DATE DATE SAMPLE SAMPLE COLLECTED: RECEIVED @ LAB: 3-26-8? 3-~6-87 Constituent Reporting Analysis Units Results Date of REPORT:3-30-8? LAB No.:5AA9 DATE ANALYSIS COMPLETED: · · "-' 3-2?-8? -i. '. Minimum Reporting Level Benzene Hg/g none detected 0.10 Toluene Wg/g none detected 0.10 Ethyl Benzene Hg/g none detected 0.10 p-Xylene Hg/g none detected 0.10 m-Xylene Wg/g none detected 0.10 o-Xylene Hg/g none detected 0.10 Isopropyl Benzene Hg/g none detected 0.10 Petroleum Hydrocarbons Hg/g none detected 5.00 Total Petroleum Hydrocarbons Wg/g none detected 5.00 CALIFORNIA D.O.H.S. 5020/8020: DRY MATTER BASIS COMMENTS: PETROLEUM HYDROCARBONS: Quantification of volatile hydrocarbons present (C1 to C20) utilizing a Gasoline Factor. As outlined by the California D.O.H.S. These petroleum hydrocarbons are in addition to the constituents specifically defined on this report. TOTAL PETROLEUM HYDROCARBONS: The sum total of all [non-chlorinated] constituents on this report. By Analyst - CtI~¥1CAZ ANAl ISIS P~TI~OZ~U¥ LABORATORIES J. J. EGLIN, lEG. CHEM. ENGII. MAIN OFFICE: 4100 PIERCE ROAD, BAKERSFIELD, CA. 93306 PHONE 327-4911 Purgeable Aromatics (SOIL) SOILS ENGINEERING ATTN:TONY FRANGIE 2901 "H" STREET BAKERSFIELD', CA. 93301 Sample Description: JOB 5052-D SAMPLE~ 9~ 10,000 GALLONS GASOLINE @2' DATE DATE SAMPLE SAMPLE COLLECTED: RECEIVED @ LAB: 3-27-87 3-27-87 Constituent Reporting Units Date of REPORT:3-31-89 LAB No.:5575 Analysis Results DATE ANALYSIS COMPLETED: 3-31-89 .. . Minimum Reporting Level Benzene Hg/g none detected 0.10 Toluene Hg/g none detected 0.10 Ethyl Benzene Hg/g none detected 0.10 p-Xylene Hg/g none detected 0.10 m-Xylene ~g/g none detected 0.10 o-Xylene ~g/g none detected 0.10 Isopropyl Benzene ~g/g none detected 0.10 Volatile Hydrocarbons ~g/g none detected 0.50 Total Volatile Hydrocarbons ~g/g none detected 0.10 EPA 5020/8020: DRY MATTER BASIS COMMENTS: VOLATILE HYDROCARBONS: Quantification of volatile hydrocarbons present (C1 to C20) utilizing a Benzene Factor. These volatile hydrocarbons are in addition to the constituents specifically defined on this report. Total volatile hydrocarbon values may be less than, equal to, or greater than any other constituent, or the combined total. TOTAL VOLATILE HYDROCARBONS: The sum total of all non-chlorinated constituents on this report. By Analyst I BORATORIES CIIEMICAL AI4ALI'~ ~ ~ - j.j. [GLIN, nEG. CHEM. [NGI. 11 ~TROLEUM ~ MAIN OFFICE: 4100 PIERCE ROAD, BAKERSFIELD, CA. 93308 PHONE 327-49 Purgeabie Aromatics (SOIL) SOILS ENGINEERING ATTN:TONY FRANGIE 2901 "H" STR,EET BAKERSFIELD, CA. 93301 Sampl-e-Descripti°n: JOB 5052-D SAMPLE# 9 10,000 GALLONS GASOLINE @6' DATE SAMPLE DATE SAMPLE COLLECTED: 3-27-87 RECEIVED @ LAB: 3-27-87 Constituent Reporting Units Hg/g Benzene Hg/g Toluene Hg/g Ethyl Benzene Fg/g p-Xylene Fg/g m-Xylene Hg/g o-Xylene Isopropyl Benzene ~g/g Volatile Hydrocarbons ~g/g Total Volatile Hydrocarbons Hg/g Date of REPORT:3-31-87 LAB No.:5576 DATE ANALYSIS COMPLETED: 3-31-87 Analysis Results none detected none detected none detected none detected none detected none detected none detected none detected none detected Minimum Reporting Level 0.10 0.10 0.10 0.10 0.10 0.10 0.10 0.50 0.10 EPA 5020/8020: DRY MATTER BASIS COMMENTS: VOLATILE HYDROCARBONS: Quantification of volatile hydrocarbons present (C1 to C20) utilizing a Benzene Factor. These volatile hydrocarbons are in addition to the constituents specifically defined on this report. Total volatile hydrocarbon values may be less than, equal to, or greater than any other constituent, or the combined total. TOTAL VOLATILE HYDROCARBONS: The sum total of all non-chlorinated constituents on this report. Analyst P~TI~OIEZI~ BORATORI J, J. EGLIN, REG. CHEM· ENGR. INC. MAIN OFFICE: 4100 PIERCE ROAD, BAKERSFIELD, CA. 93308 PHONE 327-4911 Purgeable Aromatics (SOIL) SOILS ENGINEERING ATTN:TONY FRANGIE 2901 "H" STREET BAKERSFIELD, CA. 93301 Sample Description: JOB 5052-D SAMPLE~ 10 10,000 GALLONS GASOLINE DATE SAMPLE cOLLECTED: 3-2?-8? DATE SAMPLE RECEIVED @ LAB: 3-2?-8? Constituent Reporting Units Date of REPORT:3-31-8? LAB No.:5577 DATE ANALYSIS COMPLETED: 3'31-89 Minimum Analysis Reporting Results- Level Benzene Ng/g none detected 0.10 Toluene ~g/g none detected 0.10 Ethyl Benzene Hg/g none detected 0.10 p-Xylene Ng/g none detected 0.10 m-Xylene ~g/g none detected 0.10 o-Xylene Ng/g none detected 0.10 Isopropyl Benzene ~g/g none detected 0.10 Volatile Hydrocarbons Hg/g none detected 0.50 Total Volatile Hydrocarbons Ng/g none dete~ted 0.10 EPA 5020/8020: DRY MATTER BASIS COMMENTS: VOLATILE HYDROCARBONS: Quantification of volatile hydrocarbons present (C1 to C20) utilizing a Benzene Factor. These volatile hydrocarbons are in addition to the constituents specifically defined on this report. Total volatile hydrocarbon values may be less than, equal to, or greater than any other constituent, or the combined total. TOTAL VOLATILE HYDROCARBONS: The sum total of all non-chlorinated constituents on this report. By Analyst Purgeable Aromatics (SOIL) SOILS ENGINEERING ATTN:TONY FRANGIE 8901 "H" STREET BAKERSFIELD, CA. 93301 Sample DesCription: JOB 5052-D SAMPLE# 10 10,000 GALLONS GASOLINE 86' '- ' '~TE SAMPLE DATE RECEIVED @ LAB: SAMPLE COLLECTED: 3-83-8? 3-87-87 Constituent Reporting Units Hg/g Benzene Hg/g Toluene Hg/g Ethyl Benzene wg/g p-Xylene ~g/g m-Xylene ~g/g o-X¥1ene ~g/g Isopropyl Benzene Volatile Hydrocarbons ~g/g Total Volatile Hydrocarbons Hg/g Date of REPORT:3-31-87 LAB No.:5578 DA~E ANALYSIS COMPLETED: 3-31-87 Minimum Analysis Reporting Level Results none detected 0.10 none detected 0.10 none detected 0.10 none detected 0.10 none detected 0.10 none detected 0.10 none detected 0.10 none detected 0.50 none detected 0.10 EPA 5020/8080: DRY MATTER. BASIS COMMENTS: VOLATILE HYDROCARBONS: Quantification of volatile hydrocarbons present (C1 to C80) utilizing a Benzene Factor. These volatile hydrocarbons are in addition to the constituents specifically defined on this report. Total volatile hydrocarbon values may be less than, equal to, or greater than any other constituent, or the combined total. TOTAL VOLATILE HYDROCARBONS: The sum total of all non-chlorinated constituents on this report. Analyst LABORATORIES J. J. EGLIN, REG. CHEM. ENGR. MAIN OFFICE: 4100 PIERCE ROAD, BAKERSFIELD, CA. 93308 PHONE 327-4911 Purgeab le Aromatics (SOIL) SOILS ENGINEERING ATTN:TONY FRANGIE 2901 "H" STREET BAKERSFIEL~, CA. 93301 Sample Description: JOB 5052-D "-SAMPLE~--]'I 10,000-GALLONS GASOLINE DATE DATE SAMPLE SAMPLE COLLECTED: RECEIVED @ LAB: 3-8?-8? 3-8?-89 Constituent Reporting Units Date of REPORT:3-31-8? LAB No.:5579 Analysis Results DATE ANALYSIS COMPLETED: ..:. Minimum Reporting Level Benzene ~g/g none detected 0.10 Toluene ~g/g none detected 0.10 Ethyl Benzene ~g/g none detected 0.10 p-Xylene ~g/g none detected 0.10 m-Xylene ~g/g none detected 0.10 o-Xylene ~g/g none detected 0.10 Isopropyl Benzene ~g/g none detected 0.10 Volatile Hydrocarbons Hg/g none detected 0.50 Total Volatile Hydrocarbons ~g/g none detected 0.I0 EPA 5020/8020: DRY MATTER BASIS COMMENTS: VOLATILE HYDROCARBONS: Quantification of volatile hydrocarbons present (C1 to C20) utilizing a benzene Factor. These volatile hydrocarbons are in addition to the constituents specifically defined on this report. Total volatile hydrocarbon values may be less than~ equal to, or greater than any other constituent, or the combined total. TOTAL VOLATILE HYDROCARBONS: The sum total of all'non-chlorinated constituents on this report' By Analyst CItEI~I~.AI A~4L YSIS P~TIIOLEZII4 LABORATORIES J. J. EG&IN, lEG. CHEM. ENGII. MAINOFFICE:4100PIERCEROAD, BAKERSFIELD, CA. 93308PHONE327.4911 ~ _ Purgeable Aromatics (SOIL)'' SOILS ENGINEERING ATTN:TONY FRANGIE 2901 "H" STREET Date of BAKERSFIELD, CA. 93301 REPORT:3-31-8? ~' LAB No.:5580 Sample Description: JOB 5052-D SAMPLE# 11 10,000 GALLONS GASOLINE @6' DATE DATE SAMPLE DATE ANALYSIS SAMPLE COLLECTED: RECEIVED @ LAB: 3-2?-8? 3-27-87 COMPLETED: 3-31-87 Minimum Reporting Analysis Reporting Constituent Units Results Level Benzene ~g/g none detected 0.10 Toluene ~g/g none detected 0 10 Ethyl Benzene Ng/g . p-Xyiene none detected 0.I0 m-Xylene ~g/g none detected 0.10 Hg/g none detected 0.10 o-Xyiene ~g/g none detected 0.10 Isopropyl Benzene Hg/g none detected 0.10 Volatile Hydrocarbons Ng/g none detected 0.50 Total Volatile Hydrocarbons ~g/g none detected 0.10 EPA 5020/8020: DRY MATTER BASIS COMMENTS: VOLATILE HYDROCARBONS: Quantification of volatile hydrocarbons present (C1 to C20) utilizing a Benzene Factor. These volatile hydrocarbons are in addition to the constituents specifically defined on this report. Total volatile hydrocarbon values may be less than, equal to, or greater than any other constituent, or the combined total. TOTAL VOLATILE HYDROCARBONS: The sum total of all non-~hlorinated constituents on this report. Analyst ,N,:. PETIIOLEUJl .~' MAIN OFFICE: 4100 PIERCE ROAD, BAKERSFIELD, CA..93308 PHONE 327-4911 Purgeable Aromatics (SOIL) SOILS ENGINEERING ATTN:TONY FRANGIE 290I "H" STREET BAKERSFIELd, CA. 93301 Date of REPORT:4-8-8? LAB No.:5581 Sample Description: PROJECT# 5058-D SAMPLE ~]8 1000 GALLON DIESEL @2 ........ ' DATE SAMPLE COLLECTED: 3-2?-89 DATE SAMPLE RECEIVED @ LAB: 3-29-8? DATE ANALYSIS .COMPLETED: 4-8-8? Constituent Minimum Reporting Analysis Reporting Units Results Level Benzene Hg/g none detected 0.10 Toluene ~g/g none detected 0.10 Ethyl Benzene ~g/g none detected 0.10 p-Xylene ~g/g none detected 0.10 m-Xyiene ~g/g none detected 0.10 o-Xylene Hg/g none detected 0.10 Isopropyl Benzene Hg/g none detected 0.10 Petroleum Hydrocarbons Hg/g none detected 10.00 Total Petroleum Hydrocarbons ~g/g none detected I0.00 MODIFIED EPA 8015: DRY MATTER BASIS COMMENTS: PETROLEUM HYDROCARBONS: Quantification of volatile hydrocarbons present (C1 to C30) utilizing a Diesel Factor. As outlined by the California D.O.H.S. These petroleum hydrocarbons are in addition to the constituents specifically defined on this report. TOTAL PETROLEUM HYDROCARBONS: The sum total of all [non-chlorinated] constituents on this report. By Analyst AS flI~U L TU~E £11£~¥1~4L ANAL ~1~ PETIIOLEUI~ ORATORI J. J. EGLIN, REG. CHEM. ENGB. IN(::. MAIN OFFICE: 4100 PIERCE ROAD, BAKERSFIELD, CA. 93308 PHONE 327-4911 _ _Purgeable Aromatics (SOIL) SOILS ENGINEERING ATTN:TONY FRANGIE 8901 "H" STREET BAKERSFIELD, CA. 93301 Sample Description: PROJECT~ 5058-D SAMPLE~ 18 1000 GALLON DIESEL @6' DATE DATE SAMPLE SAMPLE COLLECTED: RECEIVED @ LAB: 3-8?-89 3-8?-89 Constituent Date of REPORT:A-8-8? LAB No.:5588 DATE ANALYSIS COMPLETED: .' 4-8-8? ' Minimum Reporting Analysis Reporting Units Results Level Benzene Hg/g none detectqd O.lO Toluene Hg/g none detected 0.10 Ethyl Benzene Hg/g none detected 0.10 p-Xylene Hg/g none detected 0.10 m-Xylene Bg/g none detected 0.10 o-Xylene Hg/g none detected 0.10 Isopropyl Benzene Hg/g none detected 0.10 Petroleum Hydrocarbons Hg/g 26.58 10.00 Total Petroleum Hydrocarbons ~g/g 26.58 10.00 MODIFIED EPA 8015: DRY MATTER BASIS COMMENTS: PETROLEUM HYDROCARBONS: Quantification of volatile hydrocarbons present (CI to C30) utilizing a Diesel Factor. As outlined by. the California D.O.H.S. These petroleum hydrocarbons are in addition to the constituents specifically defined on this report. TOTAL PETROLEUM HYDROCARBONS: The sum total of all [non-chlorinated] constituents on this report. Analyst ,a6RICUZ TUIE PETROI EI, IJf LABORATORIES J. J. EGIIN, I~EG. CHEM. ENGII. MAIN OFFICE: 4100 PIERCE ROAD, BAKERSFIELD, CA. 93300 PHONE 327-491 .. Purgeable Aromatics *--'(SOIL) SOILS ENGINEERING ATTN:TONY FRANGIE 8901 "H" STREET BAKERSFIELD, CA. 93301 Sample Description: PROJECT~ 5058-D SAMPLE~ 13 1000 GALLON DIESEL @8 DATE SAMPLE COLLECTED: DATE SAMPLE 3-8?-8? RECEIVED @ LAB: 3-8?-8? Date of REPORT:4-2-8? LAB No.:5583 DATE ANALYSIS COMPLETED: 4-2-87 Constituent Analysis Results Benzene Toluene Hg/g Hg/g 5.58 0.I0 Ethyl Benzene none detected p-Xylene ~g/g 0.10 none detected 0.10 m-Xylene Hg/g none detected 0.10 o-Xylene ~g/g none detected 0.10 Hg/g none detected 0.10 Isopropyl Benzene Wg/g none detected 0.10 Petroleum Hydrocarbons ~g/g 3983 18 10.00 Total Petroleum Hydrocarbons Reporting Minimum Units Reporting Level Hg/g MODIFIED EPA 8015: DRY-MATTER BASIS COMMENTS: 3988.?0 10.00 PETROLEUM HYDROCARBONS: Quantification of volatile hydrocarbons present (C1 to C30) utilizing a Diesel Factor. As outlined by the California D.O.H.S. These petroleum hydrocarbons are in addition to the constituents specifically defined on this report. TOTAL PETROLEUM HYDROCARBONS: The sum total of all [non-chlorinated] constituents on this report. Analyst CHE¥ICAL A~L ~ " un /unl INC. ~ J.J. EGLIN, REG. CHEM, ENGR. P~TROL~UM ~ MAIN OFFICE: 4100 PIERCE ROAD, BAKERSFIELD, CA. 93308 PHONE 327-4911 Purgeable Aromatics (SOIL) SOILS ENGINEERING ATTN:TONY FRANGIE 2901 "H" STREET BAKERSFIEL, D, CA. 93301 Sample Description: PROJECT~ 5052-D 'SAMPLE# i3-1000 GALLON DIESEL Date of REPORT:4-2-8? LAB No.:5584 DATE SAMPLE COLLECTED: 3-2?-8? DATE SAMPLE RECEIVED @ LAB: 3-2?-8? DATE ANALYSIS COMPLETED: 4-2-8? Consti'tuent Minimum Reporting Analysis Reporting units Results Level Benzene Hg/g none detected 0.10 Toluene Hg/g none detected 0.10 Ethyl Benzene Hg/g none detected 0.10 p-Xylene Hg/g none detected 0.10 m-Xylene Hg/g none detected 0.10 o-Xylene Hg/g none detected 0.10 Isopropyl Benzene Hg/g none detected 0.10 Petroleum Hydrocarbons Hg/g none detected 10.00 Total Petroleum Hydrocarbons Hg/g none detected 10.00 MODIFIED EPA 8015: DRY MATTER BASIS COMMENTS: PETROLEUM HYDROCARBONS: Quantification of volatile hydrocarbons present (C1 to C30) utilizing a Diesel Factor. As outlined by the California D.O.H.S. These petroleum hydrocarbons are in addition to the constituents specifically defined on this report. TOTAL PETROLEUM HYDROCARBONS: The sum total of all [non-chlorinated] constituents on this report. Analyst ,4$ RICU [ TLIItE CIIEMICAI PETROLEUM LABORATORIES IN(~. $. J. EGI. IN, IIEG. CHEM. (SOIL) SOILS ENGINEERING ATTN:TONY FRANGIE 2901 "H" STREET BAKERSFIELD, CA. 933©1 Sample Description: PROJECT~ 5052-D SAMPLE~ 14 1000 GALLON DIESEL @2' DATE DATE SAMPLE SAMPLE COLLECTED: 3-2?-87 MAINOFFICE:4100PIERCEROAD, BAKERSFIELD, CA. 93308PHONE327.4911 Purgeable Aromatics Date of REPORT:4-2-8? LAB No.:5585 DATE ANALYSIS RECEIVED @ LAB: 3-27-87 COMPLETED: 4-2-87 Constituent Benzene Toluene Wg/g 88.25 0.10 Ethyl Benzene Hg/g none detected 0.10 p-Xylene Hg/g none detected 0.10 m-Xylene Hg/g none detected 0.10 o-Xyiene Hg/g none detected 0 10 ~g/g - Isopropyl Benzene none detected 0.10 Hg/g none detected 0.10 Petroleum Hydrocarbons Hg/g 11593.59 10.00 Total Petroleum Hydrocarbons Minimum Reporting Analysis Reporting Units Results Level ~g/g MODIFIED EPA 8015: DRY MATTER BASIS 11621.84 10.00 COMMENTS: PETROLEUM HYDROCARBONS: Quantification of volatile hydrocarbons present (C1 to C30) utilizing a Diesel Factor. As outlined by the California D.O.H.S. These petroleum hydrocarbons are in addition to the constituents specifically defined on this report. TOTAL PETROLEUM HYDROCARBONS: The sum total of all [non-chlorinated] constituents on this report. Analyst MAIN OFFICE: 4100 PIERCE ROAD, BAKERSFIELD, CA. 93308 PHONE 327-4911 Petroleum Hydrocarbons (SOIL) SOILS ~ENGINEERING .ATTN:]ONy FRANGIE 2901 "H" STREET BAKERSFIELD, CA. -~330i ~_. Sample. Description: PROJECT~ 5052-D SAMPLE~ 14 1000 GALLON DIESEL @6' DATE DATE SAMPLE SAMPLE COLLECTED: RECEIVED @ LAB: 3-27-8? 3-29-87 Date of REPORT:4-2-8? .. LAB ~:5586 · ' DATE ANALYSIS COMPLETED: 4-2-87 MODIFIED EPA 80i5: DRY MATTER BASIS COMMENTS: THIS SAMPLE DOES-NOT EXHIBIT THE CHROMATOGRAPHIC FINGERPRINT OF DIESEL #2'WHICH IS UTILIZED AS OUR DIESEL PETROLEUM HYDROCARBON STANDARD. PETROLEUM HYDROCARBONS: Quantification of volatile hydrocarbons present (CI to C30) utilizing a Diesel Factor As outlined by the California D.O.H.S. ' Analyst C#~MICAI At~l Y$1S P£1'ROlt'llM LABORATORIES J. J. EGI. IN. lEG. CHEM. ENGe. MAIN OFFICE: 4100 PIERCE ROAD, BAKERSFIELD. CA. 93308 PHONE 327-4911 -..-_. (SOIL) SOILS ENGINEERING ATTN:TONY FRANGIE 2901 "H" STREET BAKERSFIELD, CA. 93301 Sample De~scription: JOB 5052-D SAMPLE# 11 10,000 GALLONS GASOLINE @2' DATE DATE SAMPLE SAMPLE COLLECTED: 3-27-87 Purgeable Aromatics RECEIVED @ LAB: 3-2?-8? Date of REPORT: 3-31-87 - LAB No. :5579 COMPLETED: 3-31-8? Constituent Minimum Analysis Reporting Results Level Benzene Toluene - ~g/g none detected ~ Fg/g 0.10 Ethyl Benzene none detected 0.10 p-Xylene Fg/g none detected 0.10 m-Xylene Fg/g none detected 0.10 o-Xylene ~g/g none detected 0.10 Fg/g none detected 0.10 Isopropyl Benzene Fg/g none detected 0.10 Volatile Hydrocarbons Fg/g none detected 0.50 Total Volatile Hydrocarbons Reporting Units Hg/g none detected 0.10 EPA 5020/8020: DRY MATTER BASIS COMMENTS: VOLATILE HYDROCARBONS: Quantification of volatile hydrocarbons present (C1 to C20) utilizing a Benzene Factor. These volatile hydrocarbons are in addition to the constituents specifically defined on this report. Total volatile hydrocarbon values may be less than, equal to, or greater than any other constituent, or the combined total. TOTAL VOLATILE HYDROCARBONS: The sum total of all non-chlorinated constituents on this report. Aha 1 y~_ t AGRI~UL £1fEAIICAL ANALI~I~ PETROLEUll LABORATORIES j. J. EGLIN, lEG. CHEM. ENGR. MAIN OFFICE: 4100 PIERCE ROAD, BAKERSFIELD, CA. 93308 PHONE 327-4911 Purgeable Aromatics (SOIL) SOILS ENGINEERING ATTN:TONY FRANGIE E~01 "H" STREET BAKERSFIELD, CA. 93301 Sample Description: JOB 505E-D SAMPLE# 11 10,000 GALLONS GASOLINE @6' ............ - ..... ~ DATE SAMPLE'' DATE ......... '~'~' ~'~ RECEIVED @ LAB: SAMPLE COLLECTED: 3-87-87 Constituent Reporting Units ~g/g Benzene Fg/g Toluene ~ Fg/g Ethyl Benzene Fg/g p-X¥1ene Fg/g m-Xylene Fg/g o-Xylene ~g/g Isopropyl Benzene Volatile Hydrocarbons Fg/g Total Volatile Hydrocarbons Fg/g Date of REPORT:3-31-8? LAB No.:5580 DATE ANALYSIS'~- Analysis Results COMPLETED: .3-31-87 Minimum Reporting Level none detected 0.10 none detected 0.10 none detected 0.10 none detected 0.10 none detected 0.10 none detected 0.10 none detected 0.10 none detected 0.50 none detected 0.10 EPA 50EO/80EO: DRY MATTER BASIS COMMENTS: VOLATILE HYDROCARBONS: Quantification of volatile hydrocarbons present (C1 to CEO) utilizing a Benzene Factor. These volatile hydrocarbonS are in addition to the constituents specifically defined on this ~eport. Total volatile hydrocarbon values may be lesS than, equal to, or greater than any other constituent, or the combined total. TOTAL VOLATILE HYDROCARBONS: The sum t°tal of all non-chlorinated constituents on this report. ASFIICUL ~ ~ ~ J.J. EGLIN, REG. CHEM. ENGit. PETROLEUM MAIN OFFICE: 4100 PIERCE ROAO, BAKERSFIELD,CA. 93306 PHONE 327-4911 Purgeable Aromatics ......... (SOIL) SOILS ENGINEERING ATTN:TONY FRANGIE 2901 "H" STREET BAKERSFIELD, CA. 93301 Sample DesCription: JOB 5052-D SAMPLE# 10 10,000 GALLONS GASOLINE DATE DATE SAMPLE SAMPLE COLLECTED: RECEIVED 8 LAB: 3-27-87 3-27-87 Constituent Date of REPORT:3-31~8? LAB No.:5577 '~ DATE ANAEYsIs COMPLETED: . 3-31-87 · Minimum Reporting Analysis Reporting Units Results Level Benzene ~g/g none detected 0.10 Toluene ~ ~g/g none detected 0.10 Ethyl Benzene ~g/g none detected 0.10 p-Xylene ~g/g none detected 0.10 m-X¥1ene ~g/g none detected 0.10 o-X¥1ene ~g/g none detected 0.10 Isopropyl Benzene ~g/g none detected 0.10 Volatile Hydrocarbons ~g/g none detected 0.50 none detected Total Volatile Hydrocarbons ~g/g 0.10 EPA 5020/8020: DRY MATTER BASIS COMMENTS: VOLATILE HYDROCARBONS: Quantification of volatile hydrocarbons present (C1 to C20) utilizing a Benzene Factor. These volatile hydrocarbons are in addition to the constituents specifically defined on this report. Total volatile hydrocarbon values may be.less than, equal to, or greater than any other constituent, or the combined total. TOTAL VOLATILE HYDROCARBONS: The sum total of all non-chlorinated constituents on this report. ~By Analyst £H£A~I~4L A~L4L I~ LABORATORIES J. J. ECl, IN, REG. CHEM. ENGI. MAIN OFFICE: 4100 PIERCE ROAD, BAKERSFIELD. CA. 93308 PHONE 327-491' Purgeable Aromatics -- (SOIL) SOILS ENGINEERING A!TN:TONY FRANGIE 2901 "H" STREET BAKERSFIELD, CA. 93301 Sample Description: JOB 5052-D SAMPLE# 10 10,000 GALLONS GASOLINE ...... DATE SAMPLE SAMPLE COLLECTED: 3-27-87 Constituent Date of REPORT: 3-31-8? LAB No. :5578 '"' .......... ' ..... r .........DATE ANALYsIS_.i,.~ RECEIVED ~ LAB: COMPLETED: 3-27-87 3-31-87 Minimum Reporting Analysis Reporting Units Results Level Benzene Toluene ~g/g none detected 0.10 J ~g/g none detected 0.10 Ethyl Benzene ~g/g none detected 0.10 p-Xylene ~g/g none detected 0.10 m-Xylene ~g/g none detected 0.10 o-Xylene ~g/g none detected 0.10 Isopropyl Benzene ~g/g none detected 0.10 Volatile Hydrocarbons ~g/g none detected 0.50 Tota'l Volatile Hydrocarbons Hg/g none detected 0.10 EPA 5020/8020: DRY MATTER BASIS COMMENTS': VOLATILE HYDROCARBONS: Quantification of volatile hydrocarbons present (C1 to C20) utilizing a Benzene Factor. These volatile hydrocarbons are in addition to the constituents specifically defined on this-report. Total volatile hydrocarbon values may be less than, equal to, or greater than any.other constituent, or the combined total. TOTAL VOLATILE HYDROCARBONS: The sum total of all non-chlori'nated constituents on this rePOrt. By ............ Aha lyst ......... CIfEAIICAL ANALYSIS PETROLEUM RATORIES j. i. EGLIN, IIEG. CHEM. ENGll. MAIN OFFICE: 4100 PIERCE ROAD, BAKERSFIELD, CA. 93306 PHONE 327-4911 purgeable Aromatics .- (SOIL)- SOILS ENGINEERING ATTN:TONY FRANGIE 2~01 "H" sTREET BAKERSFIELD, CA. 93301 Sample Description: JOB 5052-D SAMPLE# ~ 10,000 GALLONS GASOLINE @2' DATE SAMPLE COLLECTED: 3-27-87 DATE SAMPLE RECEIVED 8 LAB: 3-2?-@? Constituent Reporting Units ~g/g Benzene .. ~g/g Toluene ~g/g Ethyl Benzene ~g/g p-Xylene ~g/g m-Xylene ~g/g o-Xylene Hg/g Isopropyl Benzene Volatile Hydrocarbons ~g/g Total Volatile HydrocarbonS ~g/g Date of REPORT:3-31-8? LAB No.:5575 DATE ANALYSIS. Analysis ResultS COMPLETED: ~-~ ~' Minimum Reporting Level none detected 0.10 none detected 0.1.0 none detected 0.10 none detected 0.10 none detected 0.10 none detected 0.10 none detected 0.10 none detected 0.50 none detected 0.10 EPA 5020/80E0: DRY MATTER BASIS COMMENTS: VOLATILE HYDROCARBONS: Quantification of volatile hydrocarbonS present (C1 to CEO) utilizing a Benzene Factor. These'volatile hydrocarbons are in addition to the constituents specifically defined on this report. Total volatile hydrocarbon values may be less than, equal to, or.greater than any other constituent, or the combined total. TOTAL VOLATILE HYDROCARBONS: The sum constituents on this report. total of all non-chlorinated Analyst A6RICUL IZIRE ~ PETRO/t'Z/¥ ~ MAiN OFFICE: 4100 PIERCE ROAD, BAKERSFIELD, CA. 93300 PHONE 327'-491 Purgeable Aromatics ............. : ...... (SOIL)--: SOILS ENGINEERING ATTN:TONY FRANGIE 2901 "H" STREET BAKERSFIELD, CA. 93301 Sample Description: JOB 5052-D SAMPLE# 9 10,000 GALLONS GASOLINE 86' DATE DATE SAMPLE SAMPLE COLLECTED: 3-87-87 RECEIVED 8 LAB: 3-27-87 Constituent Reporting Analysis Units Results Date of REPORT:3-31-8? LAB No.:5576 ..- ..... * ....... DATE ANALYSIS COMPLETED: · .,, 3-31-87 ., .,:, :.:~.. ,~ ~:~ - . Minimum Reporting Level Benzene Hg/g none detected 0.10 Toluene ' Hg/g none detected 0.10 Ethyl Benzene Hg/g* none detected 0.10 p-Xylene Hg/g none detected 0.10 m-Xylene Hg/g none detected 0.10 o-Xylene Hg/g none.detected 0.10 Isopropyl Benzene Hg/g none detected 0.10 Volatile Hydrocarbons Hg/g none detected 0.50 Total Volatile Hydrocarbons Hg/g none detected 0.10 EPA 5020/8020: DRY MATTER BASIS COMMENTS: VOLATILE HYDROCARBONS: Quantification of volatile hydrocarbons present (C1 to C20) utilizing a Benzene Factor. These volatile hydrocarbons are in addition to the constituents specifically defined on this report. Total volatile hydrocarbon values may be less than, equal to, or greater than any other constituent, or the combined total. TOTAL VOLATILE HYDROCARBONS: The sum total of all non-chlorinated constituents on this report. By Aha 1 ys t 1700 Flower Street Bakersfield, California 93305 Telephone (805) 861-3636 KERN COUNTY HEALTH DEPARTMENT ENVIRONMENTAL HEALTH DIVISION HEALTH OFFICER Leon M Hebertson, M.D. DIRECTOR OF ENVIRONMENTAL HEALTH Vernon S. Reichard January 14, 1987 Ralph Smith Realty 2301 University Avenue Bakersfield, California 93306 Dear Sirs: Upon review of the recently submitted laboratory results from your facility, we have determined that the extent of the contamination has not been adequately defined~ The levels of contamination are significantly above our action levels, /~erefore you are required by the Kern County Underground Teak Ordinance, Chapter 5, Section 3912.5.03, to further define the vertical and horizontal extent of the contamination plume. . [ We suggest that you contact your environmental assessment contractor and submit a plan for further asses?~_ nt and mitigation of the contamination. ~ If you ha':c-~~._ .p~e~Licno, please Gall me at (805) 861-3636. Sincere ly, Mark J. Pishinsky Environmental Health Specialist Hazardous Materials Managment Program 1700 Flower Street Bakersfield, California 93305 '. Telephone (805) 861-3636 COUNTY HEALTH PERMIT FOR PERMANENT CLOSURE ENVIRONMENTAL HEALTH DIVISION DEPARTME~ ' HEALTH OFFICER Leon M Hebertso~, M.D. DIRECt'OR OF ENVIRONMENTAL HEALTH Vernon S. Reichard '" SUBSTANCES' STORAG .... ? ....... ~-...~ ..~ ........... -:~ ~.~ .......... .-' ......... - .... ~ ..... ~-'--_ --~.:.=~=_~ .... u~ 'z':~ Auea~e *.'. ~: ~:~':.::~ox 10062 ?' · .,"- *~..*~-:~"??:'.:~ :- *?. -~:'~ ~ :~?"~ *-"*~.' . '~::' E:*' :::~' ~:'~' :-~- :'~-/~;UJ~5::~.~'' .-*-:-: .~.~'-,-'., '~ ~: .~.:?~: '.~ ~,.~':,~,,*'%~%~%~;~.~? ' PE~IT TO ABANDON . ' ....... -' ': ":'..~ ': ..... :.:~-;;~;~?:, *-?:;'/_L' '~',~..:? ~ '~' . ._ - -~T EXPIRES -January .16~'~*;i988 ...... a TANK(S) AT ABOVE 'APPROVA~ DATE '-'3anuary"Z6~/?::'f9a'7 ,%:.' ... M~k 3. Pish~nsky ........... POST ON PREMISES CONDITIONS AS FOLLOWS: 1. Permit~ee ~Ust obtain a Fire Department permit 'prior to ~nit~ating abandonment action. 2. All procedures must be in accordance with requirements of the standards and ~idelines developed for the implementation of Kern County Ordinance Code. 3. A minimum of two samples must be retrieved beneath ~he cehters of the diesel waste oil and paint thinner tanks at depths of two feet and six feet. 4. A minimum of two sets of samples must be retrieved beneath the gasoline tanks a~ distances one-third of the way ~n from each end at depths of two feet and six feet. 5. Ail diesel tank and associated piping samples must be analyzed for benzene and total petrole~ hydrocarbons. 6. All waste oil tank and associated piping samples must be analyzed for lead, total organic ha/ides, oil and grease. Ail gasoline tank and associated piping samples must be analyzed for benzene, toluene, xylene and total petro~e~ hydrocarbons. 8. Ail paint thinner tank and associated piping s~ples must be analyzed by EPA Test Method 8240. 9. For all product p/ping, every 15 linear· feet of pipe run must be sampled at 2~ and 6~ depths. One set of the samples mus~ be taken underneath each dispenser at the prescribed depths. 1.0~ .... Advise this office of the time and date of proposed sampling with 24 hours advance'--nOtice. -' * . ......... . _ . Olffil~ OFFICES Delano . Lamont . Lake Isabella . Mojave . Ridgecrest . Sha~er . Taft Kern County Health Departme~- Division of Environmental i?00 Flower Street, Bakersfield, CA (805) 861-3636 93305 Appl~ :ion Date Tanks to be Abandoned APPLICATION FOR PERMIT FOR T~oRARy OR PEIOL~NT CLOSURE/ABANDONMENT OF UNDERGROU-I~ IIAZARDOUS SUBSTANCES s~rORAGE FACILITY Type of Application (Fill Out One A~fat~,~er Facility) [] Temporary Cl0sure/Abandonme~t ~_~.~ ' ~manent Closure/Abandonment Project Contact (name, area code, phone): Days $o~ 3z~-~o5o Nights Facility Name CY/~/~/~V ~zewoo~'~ Facility Address /~/c~ ~ ~~ ' Nearest C~oss St' T R SEC (Rural Locations Only) Owner ~/~' ~ W~~/d, Telephone ~ ~ - ~TZ ~ Address }~/ ~x~ M~ Zip Operator' Telephone Address Zip B. Water to Facilit¥'Provided by ~ l ~P/~z~ Depth to 6roundwater. Soil Characteristics at Facility ~o / / 7-.v.~_ ~ -- ~<~'/~ ~'~/ Basis for Soil'Type and Groundwater Depth'.Determinations ~/X /q~o~ C. Tank Re;oval Contractor ~~ ~. CA bicense No. '- Address ~0~ /OOG~ zip ~3g~ Telephone Proposed.Starting Date /-~-~2 Proposed Completion Date ~orker's Compensation Certification ~ ~Z~/o/~o Insurer~/o~ Environmental Assessment Contractor Address Proposed Starting Date Worker's Compensation Certification # CA License No. Zip Telephone Proposed.Completion Date Insurer Chemical Composition of Materials Stored Tank # Chemical Stored (non-commercial name) Dates Stored Chemical Previously Stored (if different) ~ ..... / ~]~ to/¢ ~3 4 ...... /~o to/~ Describe Method for Retrieving Samples ~ ~~¢~~ ~/~/~ ~.~ SamPles~ & ~ ~/'l~Will be Analyzed/~f~ ~)/~ a o~sf°r Fo Laboratory That Will Perform Analyses of Samples Address ~7~/ /-/ fZ/~-~W Telephone(~o¢?. This Application for: ~q Removal or [] Abandonment in Place * * PLEASE PROVIDE INFORMATION REQUESTED ON REVERSE SIDE OF THIS SHEET BEFORE SUBMITTIN( APPLICATION FOR REVIEW. This form has been completed under penalty of prejury and to the best of my knowledge is tru, and correct. · Pcovide ~esccipCi~] of Physical Layout of Fa¢~iiCy Usin[ 8pace Provided Below; [~c~ude A]~ the Followi~R [nfocmatlon: ~ LocaCio~ of Tank(s), Pipin[ & Dispe~seF(s) ~ Proposed Samplin~ Locations Indicating Approximate Depth of Samples Nearest Street or Intersection __ Any Water Wells or Surface Waters Within 100' Radius of Facility T. NORTH IN BOOK AT PAG£ O~|C|AL R[CORDs O~ K£~N COUI*~'I"y. CALIFORNIA OL. CItY Of BAKERSFIELD .... CALIFORNIA ENGINEERING DEPARTMENT I o~2_ -t-4- -. ;- - ,~,LLEy ® I I IN ~mOOK_ AT I~AG~._,._...~' KD"'RN COUN'9'"y. CALi?ORNiA OLb CoR ?OPe,Ti okt-WA Rb CiTY OF BAKERSFIELD · CALIFORNIA ENGINEERINg DEPARTMENT GENERAL INFORMATION - ESTIMATES ONLY TANK NUMBER DESCRIPTION ,7 P// 3000 Gallon steel tank - Unleaded gas Estimated Depth: Top · 2.3' Bottom 7.5' 1000 Gallon steel tank -'Diesel Estimated Depths: Top 3.5' Bottom 7.5'-8' 1000 Gallon steel tank - Diesel Estimated Depths: Top 3.5' Bottom 7.5'-8' 1000 Gallon steel tank - Diesel_ Estimated Depths: Top - 3.5'~ Bottom 7.5'-8' 5000 Gallon steel tank - Regular gas Estimated Depths: Top 4' Bottom 12' 500 Gallon steel tank - Diesel Estimated Depth: Bottom 7' 300 Gallon Steel tank - Paint thinner Depth Undetermined 7~e( ~ ~4C'~ ~ 500 Gallon steel tank - Waste oil ' Estimated Depths: Top 0.5' 'O '! ~ ~ef~f~ Bottom 3' 550 Gallon steel tank - Diesel Estimated Depths: Top 1'-2' Bottom 6' 550 Gallon steel tank - Diesel Estimated Depths: Top 1'-2' Bottom. 6' 3000 Gallon steel tank Estimated Depth: 10' Diameter 7'-7.5' 500 Gallon steel tank Estimated Depth: 5.5' Diameter 4' 500 Gallon steel tank .Estimated Depth: 5.5' · Diameter 4' Sheet 1 of 1 S-TANKS. E SOILS ENGINEERING, INC. December 5, 1986 Remaco Inc. P~O. Box 10062 Bakersfield, CA. 93389 Subject: Gentlemen: Removing and Disposing of Thirteen~Abandoned_Underground~Tanks ~at Various Locations on City-Owned Property We are pleased to submit our proposal for providing soil sampling and testing services for the above described project. The scope .of our services will include, but not be limited to, making .auger test borings to a depth of six feet below the tank excavation bottom or below the bottom or invert level of varied pipelines, obtaining soil samples, and testing samples for the presence of gasoline, diesel, and oil and grease. All testing will be performed by a division of a health services approved 1 aboratory. As a minimum, samples will be tested for Benzene, Xylene, Toluene and Total Volatile Hydrocarbons. Test results along with a report summarizing the results of the field investigation will be prepared and submitted for review by the Kern County Health Department. A minimum of three bo~ings will be performed at each tank setting, at the locations shown on the schematic soil sampling diagram. The initial field' exploration and testing can be performed for a lump sum of $3800.00,-for-all tank settings. This will-include travel to the site, obtaining soil samples, delivering samples to the laboratory and all necessary tests reports required for submittal to the Health Department. Additional investigation for identifying and defining the limits of. a contamination plume, preparation of a proposal for contamination investigation and site clean up can be provided on a time and material basis in accordance with the attached Schedule of Fees and Services, but are not included in the scope of the initial investigation. _ 2901 H STREET · BAKERSFIELD, CALIFORNIA 93301 · PHONE (805) 327-7065 Proposal for Removing and Disposing of Abandoned Underground Tanks SOILS ENGINEERING, INC. P86-174 December 5, .1986 Page 2 Please contact'us if you have any questions or need additional ........... _ - - __~_- · - _ ] - ... ~Z]~_Z]- ~;~-~-~.~~' informati~on.- ,_ R?es pe(, ~rj)~l..~)~s u bmi tt ed, SOI'~~q~G, INC. L~_~omas Bay~ ~! ~ Kern County Health Dep~rtm~ -- Permi~o.~. <~--~j ~. ~ ~ ~5 Division of Enviro~en~l ~. A~licatio~a~ 1700 Flo~r Street, Bakersfield, ~ 93305 ~PLI~TION FOR PE~IT ~ OPE~TE ~E~R~D }~US SUBST~CES S~E FACILI~ T~ of Application (ch~k): ~New Facility ~ification of Facility ~isti~ Facility ~ansfer of ~ershi~ A. ~ergen~ 24-/bur Contact (~e, area c~e, ~one): ~ys ~ ~g~ ~~-~ ......... Nigh~ ~~~ ' ~~~ ~ of S~tness (/check): ~ltne S~tYon ~~r (de~rt~) - ~'~-~7~ 2~ <b'r~,~F~. } ls Tank(s) ~cat~ on ~ ~r~cultural Fa~? ~Y~ ~ .. ' - Facility ~dre~ ~' &~6~/~ Nearest ~o~ St. %~ ~'~LdfT~f~ T ' ' - R SEC (R~al ~atio~ ~ly) ' · ' Addr ess ~ater to FacilitY Provided by Soil Characteristics' at Facility Basis for Soil Type and Groundwater Depth Detenninati'ons C.. Contractor · .( Address "' Proposed'Startln~ Date · :' Worker's Ccmpensati~ Certification Depth to' Groundwatar CA Contractor' a License No. Zip Telephone Proposed Ccmpletion pete Insure~ D.: If This Permit Is For Modification Of An Existing Facility, Briefly Describe Modification ~roposed E. Tank(s) Store (check all that apply): ; 'Tank ! Waste Product Motor Vehicle Unleaded Regular Premium. .Diesel "'Waste "-- - ---Tull ' ' -------- ------- --'--- --6I/- Chmieal Cc~npesi.,tlon of l~tertals Stored {not necessary for ~otor vehicle fuels) Tank ! Chemical Stored Inon.-co~merclal na~e! ~ ! (If kno~} Transfer of Ownership Date of ~--an~fer Previous Facility Name I, Chemical .; modify or terminate the transfer of the ............ ~.. ~.faci 11 t~..upon ~r~c_~_iv,i__ng_ th!s previous Owner accept fully all obii~htions of Permi~ No; issued b I understand that the Permitting Authority may review a~ Permit to Operate this undergro~d storag: This form has been c~mpleted under penalty of true and correct. ,lgnature .~~~~ perjury and to the best of my knowledge i. Kern County ,lealth Departm~ Permi~t~m~N°'~- /~--(3 ~] ~ ~3 C D~vision of Env~ro~en~l ~. A~licatio~a'~' 1700 Flo~r Street, Bakersfield, ~ 93305 ' ~PLI~TION ~R PE~IT ~ OPE~TE ~E~R~D ~~US SUBST~CES S~E FACILI~ :. '~ of ~n (ch~k'): . ~ of B~iness (check): ~ltne S~-~'-- -~ .......... T~Ks ~s Tank(s) Us~ grf~rfly for ~rfcultu.-,'-.~~- :" ~il ~aracteristics' at Facility ~P~ ~: Gro~wa~r '~ ~sis for Soil ~ a~ Gro~ter ~p ~tem nat C., Contractor , ,...:. .... : Address _ CA Contractor,s License No. ' Zip Telephone ,' '.,:, Proposed Starting Dete Proposed C~pl~tto~ l~te - ~..rker's CcmpenSati~ .Certification I Insurer " - D. If This Permit Is For Modification Of An ExiSting Facility, Briefly Describe Mod. lfication~ I ~roposed g.' Tank(s) Store (check all that apply): ·" 'Tan~k _1 Was_.~_~ Product Motor Vehicle -' .... [] [] [] Vnleaded_ Regular Premium D,,lese! .'__~. F. Chemical Composition of Materials Stored (not necessary for motor vehicle fu~ls) i: Tank ! Chemical ' Stored (non-comnerclal name~ CAS t (if knowns Chemical Previously Stored ':.,i~ .':.:: , .. _ _ -- (if different).... -- G. Transfer of Ownership Previous Owner Previous Facility-Name I, ;;~ ~ ~ccept ' ssued--~ ...... understand that the Permitting Authority ~a7 review ar~ .' modify or terminate the ~ransfer of the Permit to Operate this t~dergroc~d storag~ .....  clllty upon receiving this c~mpleted form. .- .. This form has been completed under penalty of perjury and to the best of my knowledge true and correct. Title ~_<~<~~.~ Date ,-~-~--~_< TANK ~ , (FILL OUT SEPARATE FORM I--,,.7{ TANK) .' FOR EACH SECTION, CHECK ~T.I'. APPROPRIATE BOXES H. 1o Tank is: []Vaulted ~on-Vaulted DDouble-Wall []Single-Wall 2. ~ Material Farbon steel [] Stainless Steel [']Polyvinyl Chloride [q Fiberglass-Clad Steel iberglass-Reinforced Plastic D-]Concrete [-]Aluminum D Bronze [-]Unknown ~] Other (describe) 3. Primary Containment · Date I,~/alled Thicknes~ (Inches) Capacity (Gallons) Manufacturer · 4. ~a'nk Secondary Conta~'nment , [] Double-Wall ~ Synthetic Liner [] Lined Vault ~i~°ne [] Unknown []Other (describe): : Manufacturer: ~ OMaterial .ThiCkness (Inches) '' Capacity (Gals.) 5. Tank Interior Lining "~:'~---~Rubber OAlkyd OEpoxy []Phenolic OGlass DClay OUnlined ~kno~TI [qOther (describe): - "~ .........6,-~ Tank- Corrosf0n~ ProtectiOn ................................................... - ,'i . :. ~--_]~_Galvanized --~-~--~ass-Clad DPolyethylene Wrap []Vinyl Wrappir~ ~ {~"~' [qTar or Asphalt ~n_known DNone []Other (describe): ' ' .:. :.i. Cathodic Protection: DNone []Impressed Current System ~lSacrificial Anode' S~stem ' ~' Describe' System & Egui~ent: 7. Leak Detection, Monitoring,. and Interception '' a. Tank: E]visual (vaulted tanks only) [-IGroundwater Monitori~z3' Well(s) []Vadose Zone Monitoring Well(s) []U-Tube Without' Liner ~ []U-Tube with Compatible Liner Directing Flow to Monitorirg We.II(s) Vapor Detector* [] Liquid Level Sensor" [] Conductivit~ Sensor' [] Pressure Sensor in Annular Space of Double Wall Tank [-] Liquid Retrieval & Inspection From U-Tube, Monitoring Well or Annular Space [] Daily Gauging & Inventory Reqonciliation []Periodic Tig~htness Testing . b. Piping: . Flow-Restrict~ng Leak Detector(s). for Pressurized Piping [] Monitoring Sump with Race~y 'D Sealed Concrete Race~y ,~. D-]Half-Cut Compatible Pipe Raceway []Synthetic Liner Raceway []None ... ~Unknown [] Other ~" *Describe Make & Model: · ~.:....: en Tightness Tested? []yes I-INO "~': '. Date of Last Tightness Test Results of .Test Test Name Testing Company 9.~ Tank ~ ' · ~ Repaired? []Yes DNo ~nknown , .. Date(s) of Repair(s) Describe Repairs · 10. Overfill Protection []~)[Ta~eTaperator Fills, Controls, & Visually Monitors 5evel Float Gauge DFloat Vent Valves [] Auto Shut- Off Controls  Capacitance Sensor []Sealed Fill Box []None []Unknown .. . Other :. List Make & Model For Above Devices 11. Piping a. Un0erground Piping: ~es []No []Unknowp Material ~--~-~/ Thickness (inches) ~Diameter ~//~(Manufacturer /~,/~,~/~ ' '" []Pressure ~Suctto~---~]Gravity "A~proXimate Length of Pipe R~ /3-~~ .~?b ;-~Unde rg round- Pi pi ng "Cortes ion-Pro t ect-i on,----: ........................... ': '~:~<~:E]Galvantzed []Fiberglass-Clad []Impressed Current []Sacrificial Anode []Polyethylene Wrap ~glectrical Isol~tton' []Vinyl Wrap [-]Tar or As[~alt · _~nknown. []None [-]Other (describe)::' ¢. Underground PIptrg, Secondary Contai~ment~ '. E]Double-Wall E]syntheti¢ Liner System E]None/~nknown [-]Other (describe): H. 1. Tank is: [[]Vaulted ~Non-Vaulted i-]Double-Wall ~Si~le~all 2. ~ M~terial a[~n Steel ~Sta~nless Steel ~l~inyl ~oride ~Fi~lass~l~ Steel i~rglass-Reinforc~ Plastic ~Concrete ~ ~in~ ~B~onze ~k~ Othe~ 3. Priory C~ntai~nt ~te Ins~lled ~lc~ess (Inches) Ca,city (~llons) ~Other (descrl~) = ~o~ "' ~ ~ ter ial ~ufacturer 5. Tank Intertor_~ _ Thtc~ess (Inches) - Ca.cit.(Gals.) ~Othe~ (descrf~): .... ~6~ ...... Tank'Corrdsion Protect~ ......................... ~l~ylene Wrap ~Vin~l ':: gath~tc ~rotection:f ~ne ~press~ ~rent S~t~ ~criflcial ~e 7, ~ri~ Syst~ & Egui~ent: .:.' ' ks O~Grou~ter ~nltOrx~. ~ll(s) ' 8''~en Tightness Tested? [-]Yes [[]No ~[Unknown Date of Last Tightness Test Test Name -- _ ... Results of Test [-]Vadose Zone Monitoring Well(s) ~U-Tube Without Liner [-]U-Tube with C~,patlble Liner Dlrecti F1 [']Vapor D~tector* ~.~_..,= . . _ _n~ .~ow to Monltori Well( ~u'Hu,u uevel SensoE ng * [[] Pressure Sensor 1. A .... , ..... gl Conductivit¥ Sensor .... ,,,uz~ ~pace O_f DOU " ' ""' ' U Liquid Retrieval & Inspection ble Wall Tank_ D Dally Fr~m [;-Tube, Monitoring Well or Annular Space Gauging & Inventory Reconciliation ~.Periodic Tig~htness Testify/ Piping: low-RestPicting Leak Deeec~;~_~ ~. ~j ..... f_.~' ~- ' · ucor~s; tot Pressurized Pip ~Monitoring S~p with Race~y [-]Sealed Concrete ~acew~y i-]Half-Cut C~mpatible Pipe Raceway ~Unknown [-] Other ['] Synthetic Liner Race~;ay [-] None · Describe Make & Mode~.. nkno~ T~s~irg Ccmpany 9.~ Tank ~ .!:,;': Ta--~-P]~Repaired? D-]Yes :!... Date(s) of Repair(s) ':i' Describe Repairs · i,' .a.. Underground Piping: ~e.s [2]No 'DUnknown Material Thickness (inches) ~//~ Diameter ?~/~'/~/~Manufac '" . D-]Pressure ~']SucF/~A--P~ ..... turer ................ D-, ..... - .... ~J v~ ty roxima Onderground-PiDim.- . .... ~ .... App te Length of Pi i~ · '[::]GalvaniZed I--IFiber_, ..... o.tectton . - i ,. p~u nown k~None [2]Other tde-~-~-, , ' y rap UTar or ~lt ~ot~e wal! USynthetic Line? System [-]None ~gnknown ' (descr lbe): · 10. Overfill Protectio~ .~;' ~a~ Controls, & Visually Monitors Level ".'.. ': k3Tape Float Gauge F]Float Vent Valves 'DAuto Shut- Off Controls ::':"! ~Capacltance Sensor D-]Sealed Fill Box D']None D-]Unknown ., UOther: ~'' .... List Make & Model For Above Devices 11. ~--------- FOR EACH sECTIoN, CHECK ALL APPROPRIATE BOXES -- H. 1. Tank is: [qvaulted ~qon-Vaulted [)Double-Wall ~-]Single-Wall 2. ~ Material F arbon Steel []-]Stainless Steel [']Polyvinyl Chloride [)-)Fiberglass-Clad Steel tberglass-Reinforced Plastic []-]Concrete [-]Al~luinc~l ~]Bronze []-]Unknown [] Other (describe) 3. Primary Containment .' Date Installed Thickness (Inches) ' Capacity (Gallons) Manufacturer.* .... :'> .... .... .... - - =:-= .... ' 4. Tank Secondary Containment ,, ' , [)-)Double-Wall []Synthetic Liner [q Lined Vault []None ~Unknown [] Other (descr ibe): Manufacturer: [qMaterial .Thickness (Inches) Capacity (Gals.) 5. Tank Interior'Linincj - . , ?,! .~--~Rubber []Alkyd []Epoxy []Phenolic E]Glass [)Clay []Unlined []Other (describe): ' ' ................ 6. '~ Tank Corrosion ProtectiOn ..... -. ' -- .............. - ..... .." " - '--]~G~lvanized ~[2]Fiberglass-Clad ' []Polyethylene Wrap []Vinyl Wrapping .. ~i~':>" ~Tar or Asphalt ~'__n~kno~' []None []Other (describe).- ' , .:.:..';f,:' '~ CathodlqDescribeProtectiOn:system & Equil~uent:[-]N°ne []Impressed Current System ~lSaCriflcial Anode System 7. Leak Detection, Monitoring, and' Interception ' '~ a. Tank: []Visual (vaulted tanks only) r']Groundwater Monitoring' Well(s) " [] Vadose Zone Monitoring Well (s) [] U-Tube .Without Liner ..*{~ U-Tube with Cc~.pattble Liner Directing Flow to Monitori We.Il . !. "::~ Vapor Detector* [] Liquid Level' Sensor* [] Conductivity L~n~r" (s) "' [] Pressure Sensor in Annular Space of Double Wall Tank*' - " , [] Liquid Retrieval & Inspection Frcm U-Tube, Monitoring Well or Annular Space · [] Daily Gauging & Inventory Reconciliation []Periodic Tightness Testing .:. [] None ~ Unknown .~_ .her /-,~z.~5 /--~/~ ~ .... b.: Piping: Flow-Restricting Leik Detector(s). for Pressurized PiPing' ' .:: []Monitoring Sump with Race~y ~Sealed Concrete Paceway .~: F]Half-Cut Compatible Pipe Raceway []Synthetic Liner Raceway' []None '... J.'i ~]~nknown []Other '"'."~' *D~scribe Make & Model': ~/:i, en Tightness Tested? F]Yes ~No ~n, known <!' ~ Date of Last Tightness Test Results of Test Test Name Testing Ccmpany 9... Tank ~ ' . · ~: ~ Repaired? [-]Yes []NO ~3~known i' Date(s) of Repair(s) Describe Repairs 10. Overfill Protection /~perator Fills, Controls, & Visually Monitors Level ' ~.. '[]Tape Float Gauge []Float Vent Valves [] Auto Shut- Off Controls .' :' HCapacitanceOther: Sensor []Sealed Fill Box [-]None []Unknown '.'. List Make & Model For Above Devices · a. Underground Piping.. l~LYes []NO ~r~unkn'u ...... ~acer~az , .' Thickness (inches) ~~/Diameter ~Manufacturer /_.~./~'/~/ '" ~Pressure []SUC~Gravity 'i~imate Length of Pipe ................ :.'7-'b. ~erground.. P-iping. Corrosion Protection-:: ............. EJGalvanized [)Fiberglass-Clad []Impressed Current []Sacrificial Anode . . []Polyethylene Wrap [qglectrlcal Isolation E]vtnyl wrap []Tar or Asphalt "' "' ~__~nknown []None []Other (describe) :': c. Underground Piping, Secondary Containment: [')Double-Wall [-]Synthetic Liner System []None ~hk'nown r-)Other (describe): TANK ~ ~W/~T3~ (FILL OUT SEPARATE FORM Ho lo 2. EaCH TANK) .FOR EACH SECTION, CHECK ALL APPROPRIATE BOXES Tank is: []vaulted ~N~n-Vaul. ted []Double-Wall ~]Single-Wall ~ Material F 'a~bon Steel [] Stainless Steel r]Polyvinyl Chloride I-]Fiberglass-Clad Steel iberglass-Reinforced Plastic []Concrete ~Al~in~m~ []Bronze [-]Unkmow~ :: " [] Other (describe) 3. Primary Containment D~te lnst~tled Thickness/~nches) Capacity (Gallons) Manufacturer ~'" 4. Tank Secondary Contairm~ent .'- P-]Double-Wall r] Synthetic Liner [-]Lined Vault rlNone~known '~:.. [']Other (describe): ManUfacturer: [] Ma ter ial Thickness (Inches) Capacity (GalS'.) 5. Tank Interior:'~ining ~Rubber []Alkyd []Epoxy []Phenolic [-]Glass ~Clay ~t~lined/~kno~ rlOther (describe): .............. 6~. --Tank Corrosion ProtectiOn ..................................... ' ..: --]2FGalvan£zed --l'~/]5%-~ass-Clad [2]PolyethYlene Wrap []Vinyl Wrappt~ " "..~ [2]Tar or Asphalt ~known []None []Other (describe).- ' : Cathodic Protection: ~None []Impressed Current System ['TSacri£icial ~z~de System Describe System & Equipment: Leak Detection, Monitorin~, and Int~ ~ 'Ta-~ ~-~isual (vaulted ~n~-~ only) OGroundwater Monitoring' W~ll(s) OVadose Zone Monitoring Well(s) []U-Tube Without Liner U -Tube with C~mpatible Liner Directing Flow to Monitoring Well(s)* Vapor Detector* ~Liquid Level Sensor* []Conductivit~ Sensor* ; [] Pressure Sensor in Annular Space of Double Wall Tank [] Liquid Retrie~al & Inspection From U-Tube, Monitoring Well or Annular Space [] Daily Gauging & Inventory Re.conciliation []Periodic Tightness Testincj []None []Unknown ~)ther ~-/~ 7-/;'/~/~' ,~ .~/.--~.~6~ ~,_C~ ..~w/~/.~ Piping: Flow-Rest~ricting Leak DetectOr(s) for Pressurized,Piping" / [-]Monitoring S~p with Raceway []Sealed Concrete Raceway r]Half-Cut Compatible Pipe Raceway []Synthetic Liner Raceway []None ~]~nknown [] Other *~escribe Make & Model.' ~ .. en Tightness Tested? ~Yes []No ~, Date of Last Tightness Test Test Name 9..' Tank ~ -i'- Ta~ Repaired? []Yes rqNo ~nknown <~ Date(s) of Repair(s) Describe Repairs 10. Overfill Protection ~t]~known Results of Test Testing Company []Operator Fills, Controls, & Visually Monitors Level []Tape Float Gauge []Float Vent Valves F]Auto Shut- Off Controls BCapacitance Sensor []Sealed Fill Box [-]None ,~nknown ' Other: L~st Make & Model For Above Devices 11. Piping a. Underground Piping: ~Y~?. []No [qUnknown. ' Material Thickness (inches) ..'· :~',/ff//-~ Diameter ~//~'/~anufacturer )~P~.e~ure ~r]suc~['on ~Gravity "'APPr6ximate Length of Pipe b~-=Url~l~.rgro6ncl:~PipincJ Corrosion-Prot'ect~on ~'t []Galvanized FqFiberglass-Clad []Impressed Current []Sacrificial Anode r]Polyethylene'Wrap [qElectrical Isolation ~Vinyl Wrap [-]Tar or Asphalt ~nknown []None []Other (describe):~ c. Underground Piping, Secondary Containment: I-]Double-Wall []Synthetic Liner System []None /[~n~no~ [~]Other (describe): £dg;illLy ~dlllu ~ TANK ~ (FILL OUT SEPARATE FORM~ ~- ' ' b~.7{ TANK) · .. FOR EACH SECTION, CHECK ALL APPROPRIATE BOXES · H. 1. Tank is: [-]vaUlted ~Non-Vaulted n]Double-Wall ~Single-Wall 2. ~ Material ~' ---~2ar~n Steel [] Stainless Steel [] Polyvinyl Chloride [] Fiberglass-Clad steel i: ~Fiberglass-Reinforced Plastic []Concrete []Altm~ln~l [-]Bronze l-]Unk~owrl [] Other (describe) 3. Primary Containment Date Inst~lled Thicknes/s/.~Inches) Capacity (Gallons) Manufacturer ......... ~'~'-='- '~ :- "~/~< =- '~ -' &/'~//< -~'~ ......... ~- - · ~T ~ . · []Double-Wall []Synthetic Liner []Lined Vault []None J~known ":'~' [] Other (describe): Manu£acturer: [] Ma ter lal Thickness (Inches) Capaci ty (Gals.) 5. Tank, Interior Llni__n~ ~':'·~' ---~Rubber[]Other (describe)[-IAlkyd :F1Ep°xy []Phenolic ·~lGlass []Clay []Unlined /~kno~vl .... -~ 6.·· Tank Corrosion Protection ..........· .......................... " "'---~G~lvanized -]~U~'~Tass_Clad []Polyethylene Wrap nvin¥1 w~appir~ ... ;,i.!i '~,I []Tar or Asphalt ~h~known . []None []Other (describe): ' · :Cathodic Protection. []None []Impressed Current System ~l~acrifi¢ial Anode System Describe System & Egui[~nent: 7. Leak Detection, Monitorin~, and Interception ,i-,. a. Tank: nvisual (vaulted tanks only) [-]Groundwater Monitoring' Well(s) ?.? []Vadose Zone Monitoring Well(s) []U-Tube Without Liner . FqU-Tube with C~patible Liner Directing Flow to Monitoring iii''I~ []Vapor Detector* r']Liquid Level Sensor~ [']Conductivit~ Sensor" · ..~i, [] Pressure Sensor in Annular Space of Double Wall Tank · [] Liquid Retrieval & Inspection Fr~ U-Tube, Monitoring Well or Annular Space ~, ~ [] Daily Gauging & Inventory Reconciliation []Periodic Tightness Testin~ ~ ~ [] None [] Unknown ~ ~ her/'-~¥~.,- /~/~- ///;/-- ?~z/Z.'_~ ~-~".i- ; b. Piping: Flow-Restricting Leak Detector(s) for Pressurized Piping' ~ [-]Monitoring St~p with Race~y '[]Sealed Concrete Raceway ,~, []Half-Cut C~patible Pipe Raceway F1Synthetic Liner Raceway [']None ,~.< [] Unknown [] Other ~ mDescribe Make & ~ede][': 8. "Tank Tightness .~;~;~.~.~.~ ]~is Tank Been Tightness Tested? [-]Yes []No ~Ilnknown ~-~,,, Date of Last Tightness Test Results of Test Test Name Testing Company 9o..~ Tank ~ .;. '.<,'~'!'i~,' Repaired? [-]Yes []NO ~nknown ". ~,,: Date(s) of Repair(s) ' . " Describe Repairs · 10.' Overfill Protection ~--Operator Filis~- Controls, & Visually Monitors Level ';.ii. []Tape Float Gauge []Float Vent Valves [] Auto Shut- Off Controls ': .. [-]Capacitance Sensor []Sealed Fill Box ii. piplr~ []None .~._known . · List Make & Model For Above Devices .... a. Underground Piping: .. ~Yes []No ' [~unkno~ ~ta~,-,-t=~ ~5"T~.. _,~'~/ " Thickness (inches)-. ;'-- ~ Dt .............. · . · __ .. L~'.,~.~ ameter ~'/~>~'Manufacturer : .... [2]. ~ssure.~ F]Suction [-]Gravity Approximate Length of Pipe ............... i~-.b,!. ~ ~ Undeg~round¥1~ing Corrosi, on- Prote~t- ion..:: ............ : ................................ ... FqGalvanized I-]Fiberglass-Clad []Impressed Current ['1Sacrificial /~ocle" i," I-]Polyethylene Wrap nElectrical Isolation nvinyl Wrap []Tar or Asphalt ~iIhknow~ []None []Other (describe) :~ c. Ur~erground Pipirg, Secondary Contair~,enf: [~Do~le-wall n~thetic Liner ~stem SNone ~k~o~ ~Other (describe): Facility Name 1. Tank is.' [-]Vaulted ~Non-Vaulted [-~Double-Wall, f-~Sirgle-Wall ~ Material 2. ~arbon Steel O stainless steel [~olyvinyl Chloride []Fiberglass-Clad Steel ·~Fiberglass-Reinforced Plastic []Concrete []Aluminum []Bronze [-]Unknown ~,,, [q Other (describe) a 3. Primary Containment ': . Date IngJ~alled .. Thickness J~I~ches) TANK ~-~/~.~_~_ (FILL OUT SEPARATE FORM FOR EACH TANK) 4. Tank secondary containment [] Double-Wall r~ synthetic Liner [:]Other (describe) .' [] Ma ter ial Thickness (Inches) 5. Tank' Interior Linin9 !i::.---~Rubber [-]Alkyd []Epoxy KTPhenolic []Glass' ~.[-]Other (describe): Capacity (Gallons) . Manufacturgr .:..."_! __: . · '.- '--' ':= .....,. []Lined Vault [-]None ~[Unknown · :..~. Manufacturer '. . Capacity (Gals.) .------- []Clay [']unlined ~nknotm 6. Tank Corrosion Protection ',,' ~. .. · ~ -.".:--]:~Galvanized[ {2]Fiberglass-Clad []Polyethylene Wrap []vin.yl Wrappln9 :'~,"' [-]Tar or Asphalt ~J~known []None ~Other (describe)~ . ,~ ::.i: '.. Cathodic Protection:( []None [:]Impressed Current System ~lSacri£icial Anode System ".'~ :.. Describe System & Equil~Uent: /! 7':' Leak Detection, Monitoring,' and Interception : ::'!.c a. Tank: [:]Visual (vaulted tanks.only) [:]Groundwater Monitoring' Well(s) ':.' ..~ ': []Vadose Zone Monitorir~ Well(s) [:]U-Tube Without Liner :~2:' , 0,:. [~U-Tube with Caapatible Liner Directing Flow to Monitorin~ We.Il(s)* '!?{: Vapor Detector* [] Liquid Level Sensor* [] Conductivi.t~ Sensor' .' " ':':!": ' [] Pressure Sensor in Annular Space of Double Wall Tank '!;!:~' [] Liquid Retrieval & Inspection Frau U-Tube, Monitoring Well or Annular Space "i'<"i [] Daily Gauging & Inventory Reconciliation [] Periodic Tightness T~sting [] Monitoring Sump with Race~y ' [] Sealed Concrete Raceway [] None ',.. []Half-Cut Ccmpatible Pipe Raceway [:]Synthetic. Liner Raceway '~';: ' ~J3hknown [] Other : ": .... *I~cribe Make & Model' ..: 8." Tank Tightness .i ,. ]~-~-Thi§ Tank' Been Tightness Tested? '?~::,: Date of Last Tightness Test · , . . Test blame ;; 9.,~'.Tank ~ ~]{]n :::..: ?i,{',Ta--~-r~Repaired? []Yes [']No/____known '. :.~'. ~:,- <::-~.,:.,.Date(s) of Repair(s) .:. ':' .:!~ Describe. Repairs i . 10. i~i: Overfill Protection []Yes []No ~n. known ResultS of Test Testing Company ~Operator Fills, Controls, & visually Monitors L~vel ':'..?.., ':'"~.'. :~.:,:. []Tape Float Gauge []Float Vent Valves [] Auto Shut- Off Controls . :! '.::, .t~.. ~Capacitance Sensor []Sealed Fill' Box []None /~Jnknown '~" '~' [.JOther: ~ ~ List Make & Model For Above Devices Piping -' · ! ' , a, :: Underground piping.." ~e.s/ UINo' [qUnknq~wn/ Material ' Thickness (inches) ~/~( Diameter ~/~/~Manufacturer 'i' [jpc~u'6~.':<E)suc(ion •Gravity · ~----~in~._te Length bf pipe_Rtm~ · 11. ' b. Underground'Piping Corrosion Protection ':" · []Galvanized []Fiberglass-Clad []Impressed Current r']Sacrificial Anode :. [~Polyethylene Wrap []Electrical Isolation' []vinyl Wrap [-]Tar or Asphalt , ~nknown [']None DOther (describe) :: -- -- . + c. Underground Piping, Secondary Containment7. -- -- _ " I-]Double-Wall [:]Synthetic Line? System •None /}2g0nknown {-]Other (describe): Since189? Geotechnicalanc~EnvironmentaI. Co~sultants . Engineering and Chemical Laboratories TO ,*- KERN 'COUNTY DEPARTMENT OF HEALTH DAlE · JOB NO. 5-22-87 987-45-0 A3-rENTION: Mr o Mark Pishinsky RE: City of Bakersfield Old Corporation Yard ' WE ARE SENDING YOU ~Attached [] Underseparatecovervia Hand D~liverY the following items: '~ .~ ~.. ~.,..... · :>.:~,"..~..,~.; :r-l Drawings [] Specifications ~ Plans ~ Samples . ~?~.. ~.:'.~, ~?~. Copy of letter ~ Invoices ~ ~o~osa[ ...~,;?..~%~': ?~,:~.'.Bmchures ~ Copy of RepoA ,- -~ .. , 'DESCRIPTION ............. Site Characterization Proposal THE~E ARE-TRANSMITTED as checked below: r-I For approval [] For your use [] As requested 3[} FOr review and comment REMARKS [] Approved as submitted [] Resubmit [] Approved as noted [] Submit [] Returned for corrections ' [] For Signature copies for approval copies for distribution COPYTO r'-~ty 0t= _P,~'-qq~ ~'1 ct-l~ ~.l~ Amhro~ · (transmittal only) ~25- ..'~/~: SIGNF~: ~ ,-~-~...~",, If enclosures are not as noted, kindly notify us at once. [] 2527 Fresno Street Fresno, CA 93721 (209) 268-7021 [] 9401 W. Goshen Avenue Visalia, CA 93277 (209) 651-2190 [] 1405 Granite Lane, Suite I Modesto, CA 95351 (209) 523-0994 lB. 5301 Office Park Drive, Suite 310 Bakersfield, CA 93309 (805) 322-5216 PROPOSAL FOR PRELIMINARY ENGINEERING INVESTIGATION UNDERGROUND FUEL STORAGE TANKS CITY OF BAKERSFIELD BAKERSFIELD, CALIFORNIA Presented to: City of Bakersfield Department of Public Works 4101 Truxtun Avenue Bakersfield, California 93309 May 11, 1987 Prepared by: The Twining Laboratories, Inc. 5301 Office Park Drive, Suite 310 Bakersfield, California 93309 Fresno Mooeslo Visal~a Bakersfield City of Bksfld. Public Works TABLE OF CONTENTS INTRODUCTION ........................................... BACKGROUND ............................................. ~Site Description ................................. ~ ~ Previous Investigations Nature of the Problem ............................ OBJECTIVES OF INVESTIGATION · TECHNICAL APPROACH ' Assessment ....................................... Sampling Methods Decontamination Procedures ....................... Sample Shipment & Chain-of-Custody Procedures .... Work Safety Plan .................................. Laboratory Investigation .......................... Technical Report ' MANAGEMENT SECTION ..................................... LIMITATIONS ............................................ CLOSING ................................................ Page 1 3 3 4 4 4 6 6 6 7 7 7 8 8 9 9 10 Fresno Moclesto Visaha Bakersfield City of Bksfld. Public Works LIST OF APPENDICES: APPENDIX A - Work safety Plan ......................... A-1 LIST OF DRAWINGS: Drawing No. 1 - Vicinity Map Drawing No. 2 - Proposed Sampling Locations - Old Corporation Yard Drawing No. 3 - Proposed Sampling Locations - Old Fire Station No. 3 Fresno Mo~:esto Visalia 8a~(ersfield PROPOSAL' FOR PRELIMINARY ENGINEERING iNVESTiGATION .' . UNDERGROUND FUEL STORAGE TANKS BAKERSFIELD, CALIFORNIA INTRODUCTION We are pleased to have the opportunity to submit this proposal for an investigation at the Old Corporation Yard and at the Old Fire Station No. 3 both located in Bakersfield, California. This proposal was prepared based upon a request from Mr. Rick Ambrose of the City of Bakersfield to determine the general extent of soil containing gasoline and diesel range petroleum hydrocarbons resulting from the leakage from underc~round storage tanks located at the-above locations. This proposal presents an introduction to 'our firm, background information concerning the projects, the objectives-of the investigation, our technical approach, a description of the project management, and limitations Twining Laboratories, Inc., foUnded in Fresno, California in 1898, provides professional services in construction inspection, materials testing, geotechnical engineer.lng, environmental engineering, and analytical chemistry. We have provided these professional services in the Central California area for the past 89 years. This area is serviced from three regional offices located in [] 2527 Fresno Street · P.O. Box 1472 Fresno. California 93716 '. (209) 268-7021 1405 Granite Lane. Suite 1 Modesto, California 95351 · (209) 523-0994 9401 West Goshen Avenue Visalia. California 93291 · (209)651-2190 5301 Office Park Or~ve. Suite 310 Bakersfield. California 93309 '1805) 322-5216 C-ity of Bksfld. Pu May 11, 1987 Works Page 2 located in Fresno, California. Although these offices operate independently, they are able to draw upon the resources of the overall firm for personnel, specialty services, and unique technical capab'ilities. Our overall staff of over 60 professional and technical personnel represent registered and graduate civil engineers, geologists, chemists, construction inspectors, and laboratory technicia~s_,.~who are well qualified and have the time available to undertake this projectl The Twining Laboratories is certified by the California State ~Department of Health (Laboratory No. 146) and is a licensed contractor. for water-well drilling. ~Our procedures conform to subChapter 16 of Title 23 of the California Administrative Code (Underground Tank Section). Twining Laboratories is currently involved with the State Department of Health, Regional Water Quality Control Board, and the Kern County Department of Health on many projects. We have 15-20 environmental site assessments currently on-going at various stages of completion. Our involvement extends from the initial stages of assessment to supervising soil and groundwater clean-up. Twining Laboratories has the experience and background necessary to complete your project from start to finish. Our goal as a professional firm is to provide an orderly, accurate, and cost effective service to satisfy your requirements and project schedule. We maintain a total of $1,000,000 general liability insurance and $500,000 professional liability insurance coverage with certificates.available upon request. Fresno Moclesio Visalia 8aJ<ersfielcl .Gity of Bksfld. Pu,~c Works May 11, 1987 Page3 BACKGROUND: The following sections contain a description of existing site features, previous investigations, and the nature of the problem. Site DescriDtions: The old city corporation yard is located on "S" Stree.~ just south of Truxtun Avenue in the City of Bakersfield, California. The site is rectangular in shape. See vicinity map presented on Drawing No. 1. The perimeter of the site generally map presented on Drawing No. 3. contains .warehouse and shed type buildings surrounding a central yard. area. This central yard area is covered with asphaltic concrete paving. The tanks and dispenser under investigation were located at the southern end of this central yard area. At the time of our field visitation, the tanks and dispenser had been removed and the excavations had not .been backfilled. It is understood that the tank inverts were at an elevation approximately 10 feet below existing grade and the dispenser piping approximately 2 feet below existing grade. See site map presented on Drawing No. 2. The Fire Station is located at the southwest corner of "L" and 4th Streets in Bakersfield. The site is rectangular in shape. See Drawing No. 1 for vicinity map. The tank under investi, gation was located at the southwest corner of the property in a concrete paved area. At the time-of our field visitation, the tank had been removed and the excavation had not been backfilled. A strong petroleum odor was detected in the excavation. The invert of the tank had been at an elevation approximately 10 feet below exisitng site grade. See site Fresno Modesto Visalia Bakersfield ENGINEERING INVESTIGAT: CITY OF BAKERSFIELD ST. SCALE~ DATE )N NTS DRAWN BY: A,PPROVED DRAWING No. DROjECT No. I~A KF_.R~FI£LD OLD CORPORATION YARD FIRE STATION NO. 3 NORTH The Twining Laboratories, Inc. FI'~'ESNO//MOO[$TO /VISALJA /8AKERSFiELS OJECT No. PARKING SHED WAREHOUSE PARKING SHED A/C PAVED YARD AREA /~APPROXIY3.TE · SOIL BORING LOCATION NORTH I ~-- WASTE OIL TANK D~SPENSER~ PARKING SHED SCALE: DATE: OLD CORPORATION. YARD DF~AWN By:NTS N The Twining I ..BAKERSFIELD, CALIFORNIA. APPROVED BY: ._._~___~ j l(:bordories, Inc. 2 Of FI'~ E SNO/'MO C5 $ TO ./',/I SAL la IDIESEL TANK -APPROXIMATE SOIL 'BORING LOCATION NORTH BLOCK WALL FIRE STATION BUILDING "L" STREET I SCALE:DATE: OLD FIRE STATION NO. 3 NTS ~ The Twining I BAKERSFIELD, CALIFORNIA, 0F~AWN 8¥: APPR0VED0~.~W,N6 No.BY: ~~ hcbo[~o[[es, -- J of FRES~/MOCESTO /V~SALiA//BA~ERSFiELD ~ity of Bksfld. May 11, 1987 Pu~' c Works Page 4 According to Mr. Gary Roush of the City of Bakersfield, the .underground tanks are thought to have been installed approximately 25 to 30~ years ago. Records of inventory for product stored in the tanks were not available for either site. Previous Investiqations: On March 26 and 27, 1987, two soil samples were obtained by others at depths of 2 feet and 6 feet beneath the inverts of the abandoned underground storage tanks and the fuel dispenser. These samples were analyzed for the presence and concentration of selected constituents. In general, the analytical results revealed varying concentrations of benzenes and total. hydrocarbons at 2 feet and 6 feet beneath the tanks and dispenser. Nature of the Problem: The area of concern regarding the project sites is the extent of contaminated soil in the area of the underground storage tanks. In a letter dated April 9, 1987, from Mr. Bill Scheide of the Kern County Health Department, Environmental Health Division, Mr. Scheide indicates that his department requests a site characterization study to determine the extent of this contamination. OBJECTIVES OF INVESTIGATIONS The objectives of the proposed engineering investigation are presented below: , Determine the existence and concentration of selected constituents in the soils in the area of the under- ground storage tanks. Fresno Modesto Visalia Bakersfield City of Bksfld. Publ~ ~ Works May 11, 1987 Page 5 Evaluate the findings to determine if adequate infor- mation has been developed by this investigation to define the general vertical and lateral extent of contaminate migration in th~-area~o~the underground storage tanks This ~. · is a~prel~mlnar~/~nvestigation. -- :-~-. After the findings of this~~r~°tion have been ' -. reviewed, further investigation may be necessary to develope additional information regarding the extent of contaminate migration and concentrations in the soil· If adequate information has been developed by this 'investigation-, address clean-up alternatives and dis- cuss possible mitigation measures which could be under taken. The general scope of this investigation, which is deemed necessary to achieve the above-referenced objectives, is as follows: Using a drilling rig, drill down to a maximum depth of 25 ~ feet below the surface. Obtain undisturbed soil samples at intervals of 5 feet starting at a depth of 15 feet at the tank locations and 10 feet at the dispenser location and continuing to a maximum depth of 25 feet. Analyze selected soil samples in the laboratOry for the presence and concentration of selected constituents. Evaluate the data produced during the investigation to determine, if possible, the general extent of the con- stituent migration in the soil. · City of Bksfld. May 11, 1987 ic Works Page 6 TECHNICAL APPROACH This section presents the details of our proposed field investigation and laboratory testing program. . ..... ~ ...~_- Assessment: In order to develope information to aid in ' determining the general vertical and lateral extent of contaminant migration in the soils near the underground storage tanks and fuel dispenser, borings ~oUld be drilled t0__~ maxim, um.depth 0f~x~5''-feet''at the locations shown on Drawing Nos. 2 and 3. The depth and locations of. the borings were selected based on the data obtained from Mr. Gary Roush of the City of Bakersfield regarding the previous investigations performed, and the history of the underground tanks. All field work associated with the collection of soil samples from the project site wouldbe supervised by an engineer from our firm. Samplina ~4ethods: The borings will be advanced using either a B-40 or B-61 drill rig equipped with 8 inch diameter hollow stem augers. Soil samples will be obtained from each boring at intervals of 5 feet starting at a depth of 10 or 15 feet below ground level. Once the required, sampling depth has been reached, a representative soil sample will be obtained using a California Modified Sampler equipped with 4 inch pre-cleaned brass tubes. The sampler will be driven or pushed approximately 18 inches into the soil. The samples will be field tested using a total hydrocarbon Drager Tube with a detection limit of 100 ppm. In addition, a 4 inch portion of each soil sample will be retained for labratory analysis. The test borings will be terminated at a depth at which two consectutive soil samples exhibit non-detectable readings of total hydrocarbons or when a depth Fresno MooesIo Visal~a Bakersfield ~ity of Bksfld. May 11, 1987 Pu~ic Works Page 7 ,of 25 feet or groundwater is reached. After all the samples have been collected, each exploratory boring will be backfilled with a bentonite grout. Ail soil samples will be transported to our laboratory, however, all samples may not be analyzed in the laboratory. We have anticipated, initially, the laboratory analysis of one sample from I.' each boring. ~~ ........~._... - Decontamination Procedures: The brass tubes and the California Modified Sampler will be thoroughly cleaned between sampling intervals using a high pressure hot water (steam) washer to minimize the potential for cross-contamination. In addition, the lead auger and associated drilling equipment will be cleaned between borings to minimize the potential for cross-contamination of the borings. Sample Shipment and Chain-of-Custody Procedures: Complete records will be kept on all samples including sampling date, sample type, location, and other pertinent information. Each end of the brass tube containing the soil sample will be covered with aluminum foil and sealed with plastic caps. Each sample container will be banded and sealed with chain-of-custody seals. Ail samples will be cooled to 4°C at the site and maintained at that temperature until they are delivered to the laboratory where they will be reserved for analysis in accordance with EPA or State of California requirements. Ail samples that are retrieved from the field will be brought to Twining laboratories, Inc.'s facility in Fresno, California. Chain-of-custody procedures, generally described in Test Methods for Evaluatinq Solid Waste,.l_~.S. EPA, will be followed. Work Safety Plan: Due to health hazards associated with exposure City of Bksfld. Nay 11, 1987 ic Works Page 8 to various chemicals, all field and laboratory personnel~ who could possibly come in contact with the samples obtained from the site will be issued appropriate safety equipment. This equipment would include disPoSable ClOthing, diSPoSable rubber gloves, rubber boots, safety glasses, and hardhats. The field engineer and laboratory director will be responsible for the implementation of the work safety plan. A copy of the work safety plan is presented in Appendix ........... A of this work plan. Laboratory Investigation: Each soil sample retained for laboratory analysis will be analyzed for the presence and concentration of the following: Total Volatile ~ydrocarbons (Diesel Standard) Benzene Ethyl Benzene Isopropyl Benzene Toluene Xylenes Oil and Grease Each soil sample will be analzed in accordance witln appropriate EPA methods. The detection limit for each constituent will be indicated in the final 'report.. Technical Re~ort: A technical report will be prepared which would include the objectives of our investigation; scope of services provided; a description of the investigative procedures used; the results of laboratory test~; the findings obtained; and related conclusions and recommendations. Our professional services will be performed and our findings obtained in accordance with generally-accepted engineering principles and practices. Fresno Moc~es~o Visaha Oakersfie~(J ~ity of Bksfld. May 11, 1987 Pu ic Works Page 9 MANAGEMENT SECTION An ·engineer would be assigned to this proj. ect to single-source of responsibility and communication throughout the project. This engineer would coordinate the work of the remaining individuals involved. It is anticipated that Gary W. Kiger of our Fr~.esno Office would be_the project manager...Theodore D. Wright, RCE,~ Engineering Manager of our Bakersfield Office, would be the project engineer. John Bricarelio would be the project analytical chemist. LIMITATIONS This proposal assumes that sampling locations will be accessible to our personnel and equipment at the time of our field exploration and can be readily located in the field from existing site features. Excavations would need to be backfilled prior to our field operations. Also, some concrete cutting would be required at the Fire Station site. Cost incurred in making locations accessible will be charged at cost plus 15 percent. This extra cost has not been included in the estimated budget. Your prior approval will be requested should this occur. We sha~l not be responsible for damage to underground utilities or other installations unless they are accurately shown On the plans made available to us prior to our field operations. City of Bksfld. Pu~ May 11, 1987 Works Page 10 CLOSING Thank you for the opportunity to present this proposal~and express our interest in working with the City of Bakersfield on this project. If you have any questions, please contact our office. Sincerely, THE TWINING LABORATORIES, iNC. Theodore D. Wright, RCE Engineering Manager Bakersfield Office TDW/km 3c: lc: herewith B City of Bksfld Public Works APPENDIX A WORK SAFETY PLAN A-1 This aPPendix contains our Work safety plan fOr this ~-~roject. 'The Work ,Safety Plan was developed to protect the employees of Twining Laboratories, Inc. involved in this project and to develop all necessary safety information prior to ~he implementation of the field and ' lab~a~to r~~ inve~t i~iOn. Work Safety Plan A-2 TWINING LABORATORIES, INC. WORK SAFETY PLAN A. -GENERAL INFoRMATioN PROPERTY OWNER: LOCATION: PLAN PREPARED BY: OBJECTIVE(S): · PROPOSED DATE OF ACTIVITY: BACKGROUND DOCUMENTATION: City of Bakersfield Bakersfield, California Theodore D. Wright ~. DATE: -5-11-87 · Contamination Assessment May 1987 Previous investigations indicate that various locations could be contaminated with diesel range petroleum hydrocarbons. B. SITE/WASTE CHARACTERISTICS WASTE TYPE: CHARACTERISTIC(S): FACILITY DESCRIPTION: Liquid Solid X Sludge Gas Corrosive Ignitable Radioactive Volatile X Toxic Reactive Unknown Other (Name) Old Corporation Yard, Old Fire Station No. 3 Unusual Features: (dike integrity, power lines, terrian, etc.): Status: (Active, Inactive, Unknown): History: (Worker or non,worker injury; complaints from public; previous agency action): Powerlines overhead at Fire Station Inactive None noted Fresno Modesto Visaha Bakers~'~etd Work Safety Plan A-3 C. HAZARDOUS EVALUATION TOXICITY: 'EXPOSURE POTENTIAL: HAZARD SUMMARY: Low -1) 2) 3. Low Open-air ventilation Soil disturbance during dri'lling Contact during sample handling D.-.SITE SAFETY-'WORK PLAN'"" PERIMETER ESTABLISHMENT: Map/Sketch Atffached Yes Site secured? Yes Perimeter identified: Yes Zone(s) of contamination Identified? No PERSONAL PROTECTION: Level of Protection: Modi.fications: Equipment, Materials, and Procedures: A B C X D Level "C" utilized in areas where contamination suspected. 1) Disposal coveralls 2) Neoprene gloves 3) Rubber boots Fresno Modesto Visa~a Bakersfield Work Safety Plan A-4 DECONTAMINATION PROCEDURES: Decon procedures for sampling and drilling crew will consist of boot wash, rinse, dispose of gloves and coveralls, all disposables will be confined on-site until project is complete. SITE SAFETY PROCEDURES: Minimum 15 foot distance from overhead transmission lines. Team Member _Responsibilt¥ ,~ Gary W. Kiger Project Manager Theodore D. Wright Sampler/Engineer John Bricarello Chemistry Dept. Manager WORK LIMITATIONS (Time of delay, etc.): Limited to daylight hours INVESTIGATION-DERIVED MATERIAL DISPOSAL: Ail materials will be stored on-site pending soil analyses. Fresno Mo~eslo V,saha 8akersheld Work Safety Plan E.. EMERGENCY INFORMATION LOCAL RESOURCES A-5 Hospital Emergency: Police: Fire Department: ............. Airport: Explosive Units: 911- Greater Bakersfield (805) 327-1792 911 911 393--7990 N/A Memorial Hospital SITE RESOURCES Water Supply: Telephone: Radio: Other: Facility Supply N/A Two-Way Radio in Twining Support Vehicle N/A EMERGENCY CONTACT 1. Harry D. Moore ......... (209) 268-7021 or 2. Gordon Parrish ......... (209) 268-7021 or 435-9569 (home) 292-7076 (home) Fresno Modesto Visal~a 8akersflelci · Geotechnical and Environmental Consultants ' Engineering and Chemical Laboratorie,~ · "-":-':- -'Oct-Ober 1, 1987 ...... City of Bakersfield Department of Public Works 1501~Truxtun AVenue Bakersfield, CA 93301 .... : - At-tn~: 'Mr. 'RiCk Ambrose " RE: OLD CORPORATION YARD THINNER TANK In accordance with the request of the Kern County Health Department, one exploratory boring was advanced at the center of the previously removed thinner tank at the above referenced site. This boring was advanced to a depth of 20 feet, and was located at the center of the tank as id'entified by a survey marker placed by your personnel. Samples were taken at 15 feet and 20 feet beneath existing site grade. As requested by the Kern County Health Department, the sample at 15 feet was tested for Benzene and Methylene Chloride. The results of these tests are presented on the following pages. We appreciate the opportunity to be of service to you on this project. If you should have any questions regarding this information, please contact our office. Sincerely THE TWINING LABORATORIES, INC. - Theodore D. Wright, RCE 933710 Engineering Manager Bakersfield Office OCT o 2, 1987 TDW/km 2c: herewith -Kern.County Health DePartment [] 2527 Fresno Street · P.O. Box 1472 Fresno, California 93716 · (209) 268-7021 1405 Granite Lane, Suite 1 Modesto, California 95351 · (209) 523-0994 [] 9401 West Goshen Avenue Visalia, California 93291 · (209)651-2190 · 5301 Office Park Drive, Suite 310' Bakersfield, California 93309 -(805) 322-5216 City of Bakersfie] TL 987-065-01 Page 2 For: City of Bakersfield Sample: Received: Soil Ted Wright Identifications: B-16, 14.5' - 15.0' Comoound Benzene, Total, mg/kg as received ND 0.05 (SW-846: Methods 5020,8015) Methylene Chloride, ug/kg as received (SW-846: Methods 5020,8010) ND 0.05 ' ND : None detected at or above MDL MDL : Method Detection Limit mg/kg as ~eceived: Milligram per Kilogram as received SW-846: Test r~!ethods for Evaluation Soi.!id ~laste, Physical/ .Chemicol r,,iethods, 2nd Edition, U.S. EPS, 1982. Fresno Modesto Visalia Bat(ers field PROJECT: " F LD JOB. No: TI, 987-049-00 DRILL TYPE:__Mobile B-61 DRILLED BY: REMARKS: R. Lawrence LOGGED BY: T. ~ri~ht Center of thinner tank - CLASSIFICATION AND DESCRIPTI'ON SAND, Silty, moist, fine to med£um grained, brown' (SM) No.: B-16 !T No. 1 OF 1 LOCATION: See Site Map ELEVATION: 'TOP OF HOLE: - - DATE: GROUNDWATER: - _ STARTED: 7/02/87 COMPLETED:_i_7/02/87 GRADATION INEERING PERCENT lES: TYPE AND NUMBER Becoming light brown SAND, Poorly Graded, moist, to medium grained, tan (SP) Bottom of Boring The Twining Labof'atories, .Inc. Visalia Fresno Moclesto Balmrsliel~ TLI~ · GEOTECHNICAL ENGINEERING INVESTIGATION.- SOIL CONTAMINATION ASSESSMENT FUEL STORAGE TANKS CITY OF BAKERSFIELD OLD CORPORATION YARD ..... '~: 'BAKERSFIELD ~CALIFORNIA Presented to: City of Bakersfield Department of Public Works 1501 Truxtun Avenue Bakersfield, California 93301 OCT o 2 1987 KERN COUNTY ~:-~.~;H DEPT. Fresno Moaesto Visalia Bakersfield TL 987-049-00 TABLE OF CONTENTS. 1.0 PAGE INTRODUCTION ........................................... 2 BACKGROUND INFORMATION ................................ 2 2.1 Site Description ................................. 2 ~ 1 Project ~istory .................................. 3 · 0 PURPOSE ~ AND 4.0 5.0 6.0 7.0 8.0 9.0 SAMPLING AND TESTING PROCEDURES ....................... 5 7 RESULTS AND FINDINGS .................................. 7 5.1 Soil Profile ..................................... 7 5.2 Groundwater Conditions ........................... 8 5.3 Results of Chemical Analysis ..................... 11 EVALUATION ............................................ 13 CONCLUS IONS ........................................... 14 REC OMMENDAT IONS ....................................... 16 LIMITATIONS ........................................... 4 SCOPE OF INVESTIGATION .................... · ....-~ · LIST OF APPENDICES: A-1 APPENDIX A - Logs of Borings ............................... B-1 of Custody Documentation ................ APPENDIX B - Chain- - Fresno Modesto Visalia Bakersfield LIST OF TABLES, Table I - Soil Sample Field Analysis Table II - Soil Sample Laboratory Analysis LIST OF DRAWINGS Drawing No. 1 - Vicinity Map Drawing No. 2 - Site Map and Boring Locations DraWing No,"-~3 - Depth to GroundWater (Kern County Water Agency) Fresno Modesto Visalia Bakersfield Geotechnical and Environmental Consultants · Engineering and Chemical Laboratories GEOTECHNICAL ENGINEERING INVESTIGATION SOIL CONTAMINATION ASSESSMENT CITY OF BAKERSFIELD OLD CORPORATION YARD BAKERSFIELD, CALIFORNIA 1.0 INTRODUCTION This report presents the results of a contamination investigation of the soils beneath the area where four underground storage tanks were located at the City of Bakersfield Old Corporation Yard in Bakersfield, California. The scope of our services were authorized by Mr. Rick Ambrose of the City of Bakersfield Department of Public Works via a signed contract dated May 20, 1987. Th'e contents of this report include background information concerning the project history. In addition, a description of our investigative procedures used, and the subsequent results obtained are presented. Finally, we have provided our evaluation of the findings, and related conclusions and recommendations. The appendices of this report contain the logs of the test borings, a copy of the chain-of-custody documentation. The investigation was performed during July and August of 1987 by the Bakersfield Office of Twining Laboratories, Inc. The chemistry testing was performed by the Analytical Chemistry Division of Twining Laboratories Inc. located in Fresno, California. [] 2527 Fresno Street · P.O. Box 1472 Fresno, California 93716 · (209) 268-7021 [] 9401 West Goshen Avenue Visalia, California 93291 · (209)651-2190 [] 1405 Granite Lane, Suite 1 ~1 5301 Office Park Drive, Suite 310 Modesto, California 95351 · (209) 523-0994 Bakersfield, California 93309 .(805) 322-5216 987-049-00 .. Page 2 2.0 . BACKGROUND The following section presents background information with regard to-the descripti°~ of the si~e and ~h~--pr~oject '~i~0rY'. 2.1 Site Description: The ~Old Corporation Yard facility is located at 1612 "S" Street in Bakersfield, California. Drawing No 1 is a vicinity' map showing the approximate location of the project .................. -s ii. ........ __ ................. ..... . .................................. The project site is'located approximately 300 feet south of Truxtun Avenue. The site is rectangular in shape and about 3 acres in size. The site is bound by "S" Street to the West, Atchison Topeka and Sante Fe Railroad to the south, and alleys to the east and to the north. A site Plan is presented on Drawing No. 2 which shows the major features of the site. 2.2 Progect ~istory: On March 26 and 27, 1987, four 1,000 gallon, one 10,000 gallon, and one 500 gallon single-walled underground storage tanks and associated piping were removed from the project site. The approximate location of the tanks and appurtenant equipment are presented on Drawing No. 2. According to City of Bakersfield personnel, one 1,000 gallon tank and the 10,000 gallon tank had been used for gasoline storage, the remaining three 1,000 gallon tanks had been used for No. 2 Diesel storage, and the 500 gallon tank had been used for fuel oil storage. The tank removal and disposal operations were performed by Remaco, Inc. of. Bakerfield, California. After the underground storage tanks were removed from the ground.,~--soil..samptes were collected~ bY 'Soils-Engineering,,~Inc.~-~,at Fresno Modesto Visalia Bakersfield ~-~ TL 987-049-00 Page 3 depths of about 2 feet and 6 feet below the bottom of the tanks. According to Mr. Pat Mullhofer of Remaco, Inc., no holes were noted in ~the tanks when they were removed. ~' .~ On April 3, 1987, the test results of the soil samples collected' at the site were reported to Mr Mark Pishinsky of the Kern County ~ealth Department. The test results indicated low' levels of Benzene (0.27' t'0--35.80 rog/kg) 'and high'ieV~ls 0~O·tai }{YdrocarbonS (26.58 11621.84 rog/kg). In a letter dated April 20, 1987, Mr. Pishinsky stated that the test results indicated significant levels of Total Petroleum ~ydrocarbon contamination and that a site characterization to determine the extent of contamination in the soil surrounding the tanks and piping would be required. On May 4, 1987, a meeting was held with Mr. Gary Roush of the City of Bakersfield, the property owner, and Mr. Theodore Wright of Twining Laboratories, Inc. Mr. Pishinsky of the Kern County Health Department was also contacted by telephone on this date. The purpose of the meeting and the telephone conversation was to discuss the concerns of all parties involved and develop a work plan that would address those concerns. In brief, it was decided that a minimum of twelve test borings would be drilled in the area suspected to have soil contamination. The investigation would consist of collection and field analysis (with laboratory confirmation) of respresentative soil samples in and around the area of soil contamination. Twining Laboratories, Inc. was requested by Mr. Rick Ambrose of the City of Bakersfield Public Works .Department· to prepare- a·Work-plan-for ~this TL 987-049-00 Page 4 phase of the project. A work plan was submitted by Twining Laboratories, Inc. to Kern County Health Department "(KCHD) and Mr. Rick Ambrose of the City of Bakersfield· Upon review of the work plan, authorization was given to Twining Laboratories, Inc. to proceed with the work as outlined in the work plan with the following exception: Kern County Environmental }{ealth DePartment requested that-Total Petroleum }{ydrocarbon 'testihg~ for No. 2 Diesel be in accordance with the State of California Hazardous Materials Laboratory requirements· This does not .require the performance of oil and grease tests as outlined in our work plan. 3.0 PURPOSE AND SCOPE OF INVESTIGATION The purpose of this investigation was to determine the general horizontal and vertical extent of diesel and fuel oil contamination in the areas where underground storage tanks had been located at the project site. A summary of the actions taken during our investigation is outlined as follows: A meeting was held with Mr. Gary Roush of the City of Bakersfield Department of Public Works and Mr. Theodore Wright of Twining Laboratories. to discuss the concerns of the City of Bakersfield regarding the project. A telephone conversation was held between Mr. Mark Pishinsky of KCHD and Mr. Theodore Wright of Twining Laboratories, to discuss the concerns of the KCHD regarding the project. Fresno Modesto Visatia Bakersfield -~_--~TL 987-049-00 Page 5 A work plan was developed and submitted to KCHD for review and subsequently accepted. 4.'- A site reconnaissance and field investigation were conducted. 5. Laboratory tests were conducted on soil samples obtained from~the project site. 6. The data obtained from our field and laboratory investigations were evaluated to develop con- ............... clusions and recOmmendations with regard-t~-~h'~ extent of diesel and fuel oil contaminated soils at the site. 4.0 SAMPLING AND TESTING PROCEDURES On June 30, July 1 and July 2, 1987, fifteen exPloratory borings were drilled at the locations shown on Drawing No. 2. All field drilling and engineering services were provided by Twining Laboratories, Inc. personnel. The boring locations were measured from the tank locations identified by survey markers installed by the City of Bakersfield. The exploratory borings were drilled using a Mobile B-61 drill rig equipped with 8 inch diameter, continuous flight hollow stem augers· -Continuous logs of the soils encountered in the borings were recorded. Undisturbed soil samples were obtained from the borings at intervals ~of 5 feet beginning at a depth of about 10 feet below site grade. Each soil' sample was obtained by pushing or driving a thin-walled steel sampler equipped with pre-cleaned brass tubes approximately 12 inches into the soil. Selected soil samples were field screened for diesel constituents using Total Hydrocarbon Drager parts pe.~ milli~on). ~The Tubes (with a minimum detection limit of 100 Fresno Modesto Visaha Bakersfield ~TL 987-049-00 Page 6 'test' borings were terminated at a depth of between 25 and 40 feet. After the soil samples were obtained and in accordance with the 'authorization of Mr. Mark Pishinsky of KCHD,. the exploratory borings were 'loosely backfilled with the material excavated during the drilling operations. The soil samples obtained from the site were retained in the brass tubes. The ends of each brass tube were covered with aluminum~ foil and plastic end caps, sealed with electrical tape, and immediately cooled to 4°C for shipment to our Fresno laboratory. Strict chain-of-custody procedures were followed during the transportation and handling of the soil samples. The soil samples were received at our Fresno laboratory on July 2, 1987. Each soil sample was analyzed for the presence and concentration of the following diesel constituents: Benzene Toluene Xylenes Total Petroleum Hydrocarbons The diesel constituents listed above are those items required by the Kern. County-Health Department for this assessment. The analytical methods used during our testing program were those approved by EPA and are presented as follows: Fresno Modesto Visalia Bakersfield '%~--~ TL 987-049-00 Page 7 Constituent Benzene, Toluene, Xylen~s _.Total Petroleum Hydrocarbons SW-846: Test Methods SW-846: SW-846:. Methods 5020, 8020 Methods ~502~Q,~ 8020 T M E ' S ' W p · Chemical Methods, 2nd Edition, U,S. EPA, 19~,. 5..0 RESULTS AND FINDINGS 5.1 $oi~ Profile: The soil profile at the project site generally consists of silty sands to depths ranging from 10 to 20 feet underlain by poorly graded sands and sandy silts to the depths explored. Based on the rate of drilling, the soils were generally loose to medium dense. Visual observation indicated that natural moisture content remained at moist conditions to a depth of 41.0 feet, the maximum depth explored. The foregoing is a general summary of the subsurface conditions encountered in the borings drilled for this investigation. Detailed descriptions of the soils encountered in the borings are presented on the logs of borings in Appendix A of this report· The stratification lines shown on the logs represent the approximate boundary between soil types; the actual in-situ transition may be gradual· 5.2 Groundwater Conditions: Groundwater was not encountered in the borings drilled at the time of our field investigation (June 30, July 1 and 2, 1987). The Kern County Water Agency Water Supply Report of 1986 indicated the depth to groundwater ·to be approximately 150 to 175 feet in the area of the project site Drawing No 3 presents a dopy of a map from this report outlining the deb_th to groundwater in Fresno · Modestc Visalia Bakersfield iPROJECT No. 987-049-00 L'~E 8EO " 'DEPTH TO GROUNDWATER (From Kern County Water Agency Water Supply Report- 1986) OLD CORPORATION YARD BAKERSFIELD, CALIOFRNIA The Twinin. g L~b~rator~es, Inc. FRESNO!MOOESTO/ VISALIA /BAKERSFIEL"] 987-049-00 Page 8 the vicinity of the Corporation Yard site. 5.3 Results of Chemical Analysis: Table No. I presents the results of field tests ~of th~-~Soil samples using Total ~Yd~6carb0~ Drager Tubes. Table No. II presents the analytical results of the laboratory analysis of the soil samples obtained during this investigation. B-2 B-3 B-4 B-5 Table I - Soil Sample Field Analysis Depth Fee~ 10 15 20 25 10 15 20 25 30 35 40 10 15 20 25 10 15 20 25 30 35 10 15 20 Field Drager Tube Readings, Total ~ydrocarbon, ppm 50 ND 25 50 ND ND ND ND 75 100 ND ND ND 50 50 ND ND Fresno Modesto Visaha Bakersfield 'Z~L~87 - 049 - 00 Page 9 B-7 B-9 B-10 B-11 B-12 B-13 B-14 Depth Feet 10 15 20 10 15 20 10 15 10 15 20 10 15 10 10 15 20 25. 10 15 10 15 20 25 Field Drager Tube Readings, TQtal Hydrocarbon. ppm 100 25 Fresno Modesto Visalia Bakersfield · '~'~ TL-~987-049-00 Page 10 I T II - ' S L A ' ' '~^-~ ~epth' "Benzene Toulene 'v~__ ' ~so,prop._ . .... r'- = F ka -~- ~nes Benzene TVOH .... a--_ ......... , B-1 10 ND ND ND k A Date d ND ND ND 08-06-87 "15 ND ~ 20 ND 15 ND ND 25 ND ND 30 ND ND 15 ND 0.10 ' 20 ND 0.08 .25 ND ND 15 ND 0.13 25 ND ND 30 ND. ND B-1 . B-1 B-2 tB-2 · ~. B-2 B-2 B-3 B-3 B-4 B-4 B-5 10 ND 0.25 B-5 15 ND ND B-5 20 ND ND B-6 10 ND ND B-6 15 ND 0.15 B-6 20 ND ND B-7 B-7 B-7 B-8 10 ND 15 ND 20 ND 10 10 B-9 B-10 10 ND B-10 15 ND 10 ND ND B-11 ND ND ND 07-23-87 ND ND ND 08-06-87 .._ND ...... ND _ . .... .140 ._ 08-06-87 ND ND 5.2 08-06-8-7 ..... ND ND ND 07-23-87 ND ND ND 07-23-87 ND ND 69 08-06-87 ND ND 110 08-06-87 ND ND ND 07-23-87 . ND ND 54 08-06-87 ND ND ND 07-23-87 ND '- ND ND 07-23-87 ND ND 18 08-06-87 ND ND ND 07-23-87 ND ND ND 08-06-87 ND ND 84 08-06-87 ND ND 11 07-23-87 ND ND ND 08- 06- 87 0.07 ND ND 96 08-06-87 0.17 ND ND 20 08-06-87 ND ND ND ND 07-23-87 ND ND ND ND 07 - 23 - 87 ND ND ND ND 07-23-87 ND ND ND ND 07 - 23 - 87 ND ND ND ND 07-23-87 B-12 10 ND ND B-12 15 ND ND B-12 20 ND ND ND ND ND · 07-23-87 ND ND ND 08-06-87 ND ND ND 07-23-87 ND ND ND 07-23-87 · uel;~o Visalia Bakersfield I'~ B-15 ..B-15 B-15 '~'T~87 -0 49-00 Page 11 Iso- ~ Depth, Benzene To,,~ ....... prop u~=~= A lenes -~ F /ks .. Y Benzene TVOH - - · k A K ' k uate B-14 10 ND ND ND. ND ND 08-06-87 B-14 15 ND ND ND ND ND 08-06-87 B-14 20 ND ND ND ND ND 07-23-87 B-14 "25 ND ND ~ ND ND ND 07-23-87 10 ND ND ND ND ND . 15 ~' ND --ND -.- - .- ND ._..___ ..... ND ND.. 08-06-87 ...... 07-23-87 ........... 08-06-87 6.0 EVALUATION prior to our field.investigation surface soils in the excavations had The purpose of this investigation was to determine'the general horizontal and vertical extent of diesel contaminated soil beneath 'the area where underground storage tanks were located at the project site. As previously discussed, the test results of the soil samples obtained during tank removal operations revealed low concentrations of Benzene and high concentrations of Total Hydrocarbons· The soil samples were taken from the bottom of the tank ~xcavations, near the centers of the tanks, at depths ranging from 10 to 14 feet below site grade. During this investigation, one boring each was advanced in the area where the .center of the tanks were located, and the remaining borings were advanced around the perimeter of the tank excavations. The results of the soil samples selected for analysis obtained from these test borings revealed non-detectable concentrations of Benzene and Xylenes and low concentrations of Toulene and Total Hydrocarbons· The tank excavations remained open for a period of about 3 months During this time period, the an opportunif_M tm aer~h~a~ Fresno Modesto Visalia Bakersfield 987-049-00 Page 12 could partially explain the non-detectable concentrations of Benzene foUnd in the soil samples taken from the test borings advanced in the area where the initial soil samples had been taken. Based on the results of the analysis of the soil samples obtained from ~6ur test borings which revealed relatively low concetnrations of Toulene and Total Hydrocarbons, the depth of attenuation for the constituents at about 20 feet, and the approximately 150 feet of separation between groundwater and the soil containing detectable concentrations of Total Hydrocarbons, it is our opinion that the diesel components remaining in the soil do not pose a threat to the underlying groundwater and that no further soil excavation is warranted at this site. To prevent a conduit for surface runoff into the. excavation and to provide a stable subgrade for future site development, the material that was placed in the excavation in order for our firm to gain access to advance our exploratory borings should be removed and recompacted as engineered fill. In addition, an asphalt pavement section should be placed on top of the backfilled excavation to rapidly drain surface runoff away from the backfilled areas. Fresno Modesto Visalia Bakersfield 987-049-00 Page 13 7.0 CONCLUSIONS On the basis of the findings the following conclusions: presented in this report, we present The soil profile at the site generally consists of silty sands to depths ranging from 10 to 20 feet underlain by poorly graded sands and sandy silts to the depths explored. 7.2 Based on data obtained from the Kern County Water Agency Water Suppy Report of 1984, groundwater is located at a depth of about 175 feet below site grade. 7.3 Ba~ed on the seven exploratory test borings placed in the area of the three 1,000 gallon diesel storage tanks, diesel contaminated soils ap- pear to attenuate at a depth of about 20 feet below site grade. 7.4 Based on the eight exploratory test borings placed in the area of the 500 gallon fuel oil tank and dispenser, fuel oil contaminated soils are not present below a depth of ten feet. Fresno Modesto Visal~a Bakersfield ~L 987-049-00 Page 14 8.0 .RECOMMENDATIONS The following recommendations are submitted for your consideration: --- '~ - · 8.1 The loose material in the excavations should be entirely removed and recompacted as .engineered fill. 8.2 The on-site.soils which are free of organics and debris are predominatly silty sands. These soils will be suitable for use as fill material provided the moisture content of the soil is at or near optimum. Import fill soil should be nonexpansive and granular in nature with the following requirements: Percent Passing 3 inch Sieve Percent Passing No. 4 Sieve Percent Passing No. 200 Sieve Plasticity Index R-value 100 50 - 100 0 - 30 Less than 10 Minimum 40 The import fill material, prior to use should be approved by Twining Laboratories, Inc. 8.3 Engineered fill soil should be placed in lifts approximately 6 inches thick, moisture-conditioned as necessary, and compacted at or near optimum moisture to achieve a dry density of at a 92 Fresno Modesto Visalia Bakersfield ~-~TL 987-049-00 Page 15 percent of the maximum dry density as determined by ASTM Test Method D1557-78. Additional lifts should not be placed ~f the previous lift did not meet the required dry density or if soil conditions are not stable. The backfilled excavati6n shoUld 'be-~a~ped ~ith a~ ............................. .aspha%tic concrete pavement to rapidly drain surface runoff away from the backfilled area. The asphaltic concrete pavement should be designed to support the anticipated traffic conditions. Fresno Moclesto Visalia 8akersfielcl '~-~TL 987-049-00 .. Page 16 9.0 LIMITATIONS.. The evaluation, conclusions, and recommendations contained in our ~eport are based on the site conditions as they existed at the time of our investigation, and further assume that probes, such as exploratory borings, are representative of the soil conditions at the site, i.e. the soil conditions everywhere are not significantly differ~ent from those disclosed by the probes. If different subsurface conditions from those encountered during our exploration are observed or appear to be present, we must be advised promptly so that we can review these conditions and reconsider our conclusions and recommendations where necessary. If there is a substantial lapse of time between the submission of our report and the start of additional work at the site, or if conditions have changed at or adjacent to the site, we recommend that our report be reviewed to determine the applicability of the conclusions and recommendations considering the changed conditions and time lapse. Our professional services were performed, our findings obtained and our recommendations prepared in accordance with generally-accepted engineering principles and practices. This warranty is in lieu of all other warranties, either expressed or implied. Fresno Modesto Visal~a Bakersfield 987-049-00 Page 17 We appreciate the opportunity to be of service to the City of Bakersfield on this project. If you should have any questions regarding this report or if we can be of further assistance, please contact our office. Sincerely, THE TWINING LABORATORIES, INC. Theodore D. Wright, RCE 933710 Engineering Manager Bakersfield Office (exp. 6-30-90) TDW/km 3c: herewith B F Fresno Modesto Visatia Bakersfield ~ ~_'~TL 987-049-00 Page 18 APPENDIX A Fresno Modesto Visal~a Bakersfield , TL 987-049-00 ~ ~ ~.~)~ A-1 APPENDIX A LOG OF BORINGS This appendix contains the final logs of borings. These logs represent our interpretation of the contents of the field logs and the results of the field tests. The boring logs and related information depict subsurface condition's only at these locations and at the particular time designated on the logs. Soil conditions.at other locations may differ from conditions occurring at these boring locations. Also, the passage of time 'may result in changes in the soil conditions at these boring loCatiOns. In addition, an explanation of the abbreviations used in the preparation of the logs, and a description of the Unified Soils Classification System are provided. Fresno Modesto Visalia Bakersfield ~ TL 987-049-00 A-2 L_LOGS OF EXPLORATION~ EXPLANATION F ABBREVIATIONS - Split barrel ring sampler, 2.5-inch I.D., for taking undisturbed samples. Fresno Modesto ' Visalia Bakersfield PROJECT: ~J~ No: CITY of BAKE~F%ELD TL987-049-00 DRILL'TYPE: Mobile B-61 DRILLED BY:... R, Lawrence LOGGED BY: T. Wright REMARKS: 1 foot south and 31 feet east of southeast CLASSIFICATION AND DESCRIPTI'ON SAND, Poorly Graded, moist, ~fine-to~medium grained,.~tan .r micas (s No.: No. LOCATION: ELEVATION: ,DATE: B-I 1 OF 1 See Site Map TOP OF HOLE: - - GROUNDWATER: - - STARTED: COMPLETED: GRADATION PERCENT TAINED 6-30-87 6-30-87 INEERING j :ERTIES: [ r,T?E AND[ LATE NUMBER J Field Drager Tube Readings Total Hydro- carbons Not Detected Not Detected i t SILT,Sandy; moist, non-plastic, golden (ml) ..25 Bottom of Boring J . The Twining Labo~.ato~.ies, Inc. I II Vlsalie Fresno Mo~esto Bakersfield Not Detected NEt Detected TL1C PROJECT: OLD CORPORATION YARD --4No: TL987-049-00 DRILL TYPE: Mobile B2~l DRILLED BY: R, Lawrence LOGGED BY:_T. Wright ELEVATION: REMARKS: feet ast of southeast corner of existing warehouse CLASSIFICATION AND DESCRIPTION SAND, Silty; moist, fine to medium grained, brown (SM.] B-2 Js~' No. ~ LOCATION:_See Site MaD  ELEV~ TOP OF HOLE: - - GROUNDWATER: - ' ~DATE: STARTED:~ I COMPLETED:~ GRADATION ENGINEERING PERCENT lES: qED TYPE AND ~LATE NUMBER Field Drager Tube Readings Totai Hydro- carbons Not Detected SILT, Sandy; moist, non-plastic golden (ML) 25 25 , Poorly graded; moist, to medium grained, tan (SP) The Twining Laboratories, Inc. 5O TLlO PROJECT: JOB No: DRILL TYPE: OLD YARD CITY of BAKERSF%ELD TL987-049~00 LOG OF BORING Mobile B-61 DRILLED BY: R. Lawrence LOGGED BY:~. Wright REMARKS: ~1 fmet south and 31 feet east o,f'.southeas~ corner of existing warehouse CLASSIFICATION AND DESCRIPTION No.: B-2 SHEET No.__~_2 OF 2 LOCATION: See Site Map ELEVATION: DATE: TOP OF HOLE: - - GROUNDWATER: - - STARTED: 6'/30/87 --COMPLETED ..... GRADATION PERCENT ~ED INEERING' lES: TYPE AND ~LATE NUMBER Field Drager Tube Readin Total Hydro- carbons Not Detected Not Detected Bottom of Boring Not Detected The Twining VIsalia Fresno Laboratories, Inc. Modesto Bakersfield TLIOe PROJECT: JOBi"No: OLD CORPORATION YARD ELD TL987-049-00 DRILL TYPE: Mobile B-61 .. DRILLED BY: R, Lawrence LOGGED BY: T. Wright REMARKS: __ _ 18 feet south and 14 feet east of southeast corner of existing warehouse CLASSIFICATION AND DESCRIPTI'ON SAND, Silty; moist, fine to medium grained, Brbw~ .... (SM) HOLE No.: No. LOCATION: B-3 1 OF 1 See Site Map ELEVATI.ON: TOP OF HOLE: - - FF. GROUNDWATER: - - DATE: STARTED: COMPLETED: 6/30/87 6/30/87 GRADATION PERCENT TAINED INEERING lES: TYPE AND[ ATE NUMBER Tube Readings Total Hydro- carbons Not Detected SAND, Poorly Graded; fine to medium grained, moist, tan (sP) 75 '20- 25 SILT, Sandy; - moist, non-plastic, brown (ML) i Bottom of Boring The Twining Labo .ato -ies, Inc. Vlsalia Fresno Modesto Bakersfield 100 Not Detected TL1 PROJECT: OmD ~OR~~ CITY of BAKE~IELD JO~ No: TL987-049-00 DRILL TYPE: Mobile B-61 DRILLED BY:. R. Lawrence LOGGED BY: T. Wright REMARKS: l? Fm~t sout'h and 4 feet east' of southeast corner of existing warehouse CLASSIFICATION AND DESCRIPTI'ON SAND, Silty; moist, fine to ~medium grained, brown --~ . (SM NO.: NO. LOCATION:. B-4 i OF. 2 Site Map ELEVATION: DATE: TOP OF HOLE: - - GROUNDWATER: - - STARTED: COMPLETED: 6/30/87 GRADATION PERCENT TAINED 6/30/87 NEERING lES: ,TYPE AND ~LATE NUMBER Field-Drager~ Readings Fotal Hydro- carbons Detected SAND, Poorly Graded; fine to medium grained, micas, tan (sP) Detected 2O ; 25 SILT, Sandy; moist, non-plasti~ oxides, brown (ML) The 'Twining Vlsalia Fresno Labo~'ato~.ie$, Inc. 5O 5O TL 1 © PROJECT: OLD CORPORATION YARD HOLE No.: B-4 JOB No: ,. TL987-049-00 LOCATION: See Site Map DRILL TYPE: Mobile B%~i DRILLED BY: R, Lawrence LOGGED BY: T. Wright ELEVATION: TOP OF HOLE: - - FT. REMARKS: 12 feet south and 4 feet east of southeast GROUNDWATER: - - corner of existing warehouse DATE: STARTED: 6/30/87 COMPLETED: 6/30/87 - ~ ~ ~ ~_ GRADATION ENGINEERING f ~ = = ~ --~ PERCENT PROPERTIES: ~ CLASSIFICATION AND DESCRIPTION ~ ~ ~x ~o--~ -- ~ _ -- RETAINED FEST, TYPE AND m ~ ~ ~ o ~ ~ > ~: < ~ ~%~LATE NUMBER ......... Field Drager - - .... .............. ' ~ ............ ' ..................... --~ ........ - ..... ~ube-.Reading~ total ~ydro- carbons 30-- SAND, Silty; moist, fine to iRS Not Dete~ted - medium grained, brown (SM) I35 -- LRS! Bottom of Boring Not Detected _ - The Twining Labo atoPies, Inc. Visalia Fresno TL1C PROJECT: OLD CORPORATION YARD JOB~No: TL987-049-00 DRILL TYPE: Mobile B~i DRILLED BY: R. Lawrence LOGGED BY: T. Wright REMARKS: 1. Foot south and ~ feet east of southeast corner of existing warehouse CLASSIFICATION AND DESCRIPTI'ON SAND, Silty; moist, fine to medium, grained, brown (SM)~.: HOLE No.: R-5 SHI No .,, 1 OF 1 LOCATION: See Site Map ELEVATION: DATE: TOP OF HOLE: - - GROUNDWATER: - - STARTED: 7/01/87 COMPLETED: 7/01/87 GRADATION PERCENT INED ~NGINEERINGEs: TYPE.AND PLATE NUMBER Field__Dr~ger~. Tube Reading~ Total Hydro- carbons SILT, Sandy; moist, non-plastic brown, micas (ML) SAND, Poorly Graded; moist, to medium grained, micas, tan (SP) o Not Detected Not Detected 20- SAND, Silty; moist, fine to medium grained, brown (SM) Bottom of Boring The Twining L..abo 'ato ,ies, Inc. Vlsalia Fresno Modesto Detected TLIO PROJECT: JOB~ No: OLD CORPORAT~N YARD CITY of BAK~'IELD TL987-049-00 DRILL TYPE: Mobile B-61 DRILLED BY: R, Lawrence LOGGED BY: T. Wright REMARKS: 6 F~t north and ]! FEet ~2~t o¢ southeast corner of existing warehouse CLASSIFICATION AND DESCRIPTI'ON SAND, Silty; moist, fine to medium, grained, micas;'brown (SM) SILT, Sandy; moist, non-plastic, brown to golden (ML) No.: No. LOCAT I ON: B-6 1 OF 1 ELEVATION: DATE: TOP OF HOLE: - - GROUNDWATER: - - STARTED: 7/01/87 COMPLETED: 7/01/87 GRADATION PERCENT TAINED INEERING RTIES: TYPE AND PLATE NUMBER Field_~rager Tu~ R~Rding$ Total Hydro- carbons SAND, Poorly GRaded, moist, fine to medium grained, tan (SP) 25 Becoming finer grained Not Detected 20 - 25-- I Bottom of Boring The .Twining Visalia Fresno Labo 'atories, Inc. Modesto Bakersfield Not Detected TL~ PROJEET: OLD CORPORATION YARD HOLE No.: B-7 __~LD SHL~No. 1 OF 1 JOB )No: TL987-049-00 LOCATION: See Site Map DR ILL TYPE: Mobile· B-61 DRILLED BY: R, Lawrence LOGGED BY: T. Wright ELEVATION: TOP OF HOLE: - - REMARKS:.6 feet south and 14 feet east of southeast GROUNDWATER: -- corner of existing warehouse DATE: STARTED: 7/01/87 COMPLETED: 7/01/87 '~ "' ~ >- GRADATION ENGINEERING · ,-, ~ z -- -- ~ PERCENT PROPERTIES: :Z.' ,,,. z~- ~ ~ ,,,a. "" -- I~[[TAINED TEST. TYPE ANDi ~,,, CLASSIFICATION AND DESCRIPTI'ON ~mc'~ --~oo ~ --~-=_ ~,,,~x %%PLATE NUMBER - Sg2q-D, S'[lty; moist, fine to ?±eld Drager ......... medium grained, -brown. . (.SM; ............ - ...................... tube Read±ngs - total Hydro- :arbons 5 -- 10-- Becoming finer grained~ LRS 100 15~ SAND, Poorly Graded; moist, fin,~LR~ Not Detected to medium grained, tan, micas (sP) 20-- LR~ Not Detected _ 25- ~RS Bottom of Boring The Twining .Labor. ator'ies, Inc. · Vlsalia Fresno Modesto Ba~erstield TLIO~- PROJECT: OLD CORPORAT~_.ON YA_RD HOLE No.: CTTY O~ BAK~IELD S~ No 1 OF 1 JO~ No: TL987-049-00 LocATION: See Site Map DRILL TYPE: Mobile 'B~61 ORILLED BY: R. Lawrence LOGGED BY: T. Wright ELEVATION: TOP OF HOLE: - - REMARKS: 42 feet south and 8 feet west of southeast GROUNDWATER: - - corner of existin~ warehouse DATE: STARTED: 7/nl/87 COMPLETED: 7/01/87 II ~ ~ ~ GRADATION ~NGINEERING .' ~ ~ z ~ ~ --~ PERCENT ~ROPERTIES: ~. z~ ~ ~ ~m m -- R~TAINED rEST, TYPE AND ~ CLASSIFICATION AND DESCRIPTION ~c~ -- z ~ -- ~ ~ x ~ ~m ~ o o =-- ~ ~ %%~LATE NUMBERI - S~, Silty; moist, fine to . ~ield Drager .....medium-grained, bro~, micas ............ - ............. ~'~Tube Readmngs - (SM) ~otal Hydro- _ carbons 5 -- '10 - SILT, Sandy; moist, non-plastic, LRS Not Detected _ micas, bro~ to gold, (ML) 15 S~, Poorly Graded; moist, fine LRS~ ~ot Detected - to medium grained, tan (SP) 20-- LRS _ -~SILT, Sandy; moist, non-plas~c, 25 ~ghe bro~, m~cas (~) LRS The Twining Laboratories, Inc. Visalia Fresno Modesto Bakersfield TL[1 PROJECT: OLD CORPORATION YARD HOLE No.: B-9 JOB~No: TL987-049-00 LOCATION: See Site Map DRILL TYPE: Mobile B'-~I DRILLED BY: R. Lawrence LOGGED BY: T. Wright ELEVATION: TOP OF HOLE: - - FT. REMARKS: 46 feet south and 3 feet east of southeast GROUNDWATER: - - ' corner of existing warehouse DATE: STARTED: 7/01/87 COMPLETED: 7/01.(87 ...... = = ~ -- ~ PERCENT ~ROPERTIES: w~ ~ ~ ~ ~ ~ - RETAINED rEST, TYPE ANDt' ~ CLASSIFICATION AND DESCRIPTI'ON ,~m - ~ ~ -- ~ x - SAND, Silty; moist, fine to , Field Drager - medium grained,~ brown -- (SM) ~.,... . ....................... - ........ Tube-Readings? ........ Total Hydro- carbons 10 SILT Sandy; mosit, non-plastic LRS Not Detected light brown (ML) 15 SAND, Poorly GRaded; moist, fine LR~ Not Detected - to medium grained, tan (SP) I20-- LR~ Not Detected ;~ -~SILY, Sandy; moist, non-plastic ~ 25 l oxides~ brown (Iv[L) ~RS 'l Bottom of Bor'ing The Twining Labo .=to 'ies, Inc. Vlsalis Fresno Modesto Bakersfield TLIO PROJECT: JO8 No: CITY of BAKL~FIELD TL987-049-00 DRILL TYPE: Mobile B-61 DRILLED BY: R, Lawrence LOGGED BY: T. Wright . REMARKS: 30 feet south and 2 feet west of southeast corner of existing warehouse CLASSIFICATION AND DESCRIPTI'ON No.: LOCATION: 1t-10 1 OF 1 See Site Map 'ELEVATION: DATE: TOP OF HOLE: - - GROUNDWATER: - - STARTED: 7/01/87 COMPLETED: 7/01/87 GRADATION PERCENT :TAINED lNG ,PERTIES: ST, TYPE AN£ ATE NUMBER SAND, Silty; moist, fine to medium grained,'~bro~m .............. (SM) eld__P~ge3 Readings Hydro- carbons SILT, Sandy; moist, non-plastic, brown to gold, micas (ML) Not Detected 20- SAND, Poorly Graded; moist, fine to medium grained, tan (ML) Becoming light brown with gravels to 1" maximum 25  Bottom of Boring Twining Labo .atorie$, Inc. Visalia Fresno Modesgo Bakersfield Not Detected TLI' PROJECT: OLD CORPORATI__ON YARD H~No.: B-ii JOB No: TL987-049-00 LOCATION: See Site map DRILL TYPE: MobileB~61 ELEVATION: TOP OF HOLE: - - FT. DRILLED BY: R, Lawrence 'LOGGED BY: T. Wright _ REMARKS: 37 feet south and 10 feet east of GROUNDWATER: - - southeast corner of existing warehouse DATE: STARTED: 7/01/87 COMPLETED: 7/01/87 ~~ ~ ~ GRADATION ENGINEERING ~ = z ~ -- ~ PERCENT PROPERTIES: ~- z~ m ~ ~ m - RETAINED TEST, TYPE AND ~ CLASSIFICATION AND DESCRIPTI'0N ~¢~ -- z ~ -- ~ ~ x ~ ~ ~ oD =-- ~ ~ ~ ~%~PLATE NUMBER SAND, Silty; moist fine to ield Orager medium grained,-, brown, micas ................ Total Hydro- - (SM) carbons 5-- 10 SILT, Sandy; moist, non-plastic LRS ~ot Detected - Light brown, micas (ML) 15 SAND, Poorly Graded; moist, fineLRS to medium grained, tan (SP 20-- LRS - ] SILT, Sandy; moist, non-plasticl micas, light brown (ML) LRS 25 - bottom of Boring The Twining Labor. atop'les, Inc. VIsalia Fresno Modesto Bakersfield TLI[ PROJECT: OLD CORPORATION YARD JOB No: TL987-049-00 DRILL TYPE: Mobile'B-61 DRILLED BY:' R. Lawrence LOGGED BY: T. Wright REMARKS: &O Faet Aouth and 0 feet east of southeast corner of existing warehouse CLASSIFICATION AND DESCRIPTI'ON NO.: No. 1 OF. ,ATION: See Slte ~ag ELEVATION: DATE: TOP OF HOLE: .- - GROUNDWATER: - - STARTED: 7/01/87 COMPLETED: 7/01/87 GRADATION PERCENT TAINED ~NGINEERING ~ROPERTIES: TYPE AND ~LATE NUMBER SAND, Silty; moist, fine to .... medium grgined.+ brown .(SM) Field Drager ~Tube-Reading. Total'Hydro- carbons SILT, Sandy; moist, non-plastic light brown, micas (ML) Detected SAND, Poorly Graded; moist, fin, to medium grained, light brown (s?) Detected Detected SILT, Sandy; moist, non-plastic brown (ML) i 25 j Bottom of Borings, j The Twining La-bo 'ato 'ie$,... Inc. Visalia Fresno Moclesto Bal~erslield Detected TLI~ · CTTY of BAKERSFIELD SHEET No. 1 OF 1 J~B No: TL987-O49'-00 LOCATION: See Site Map DRILL TYPE: Mobile B-61 DRILLED BY: R. Lawrence LOGGED BY: T. Wright ELEVATION: TOP OF HOLE: - - 'FT. REMARKS: 54 feet south and 1 foot east of GROUNDWATER: - - southeast corner of existing warehouse DATE: STARTED: 7/02/87 COMPLETED: 7/02/87 .......  ~ GRADATION· ENGINEERING ~ -- ~ PERCENT PROPERTIES:. · ~ z~ ~ ~ ~ m -- RETAINED TEST, TYPE AN[ m CLASSIFICATION AND DESCRIPTION ~'-'~ -- z --~ ~× ~ ~ ~ o o =-- ~ %~PLATE NUMBER - SAND, Silty; moist, fine to ........... Field Drager _ medium'-~rained', brown (SM) Tube Reading: Total Hydro- - carbons 10 SILT, Sandy; moist, non-plastic ERS Not Detected light brown (ML) 15-- SAND, Poorly Graded; moist, fine,RS Not Detected - to medium grained, tan (SP) 20-- Becoming light brown ~RS - ~SILT, Sandy; moist, fine grainedLRS 25-- non-olastic, (ML) .......... Bottom of Boring rwinin t.. bor' tor'ie$, '1 Vlsalla Fresno Modesto Bal~erslield PROJECT: OLD .CORP~ iH~ No.: B-14 CITY of BAK~FIELD S T No. 1 OF J0~ No: TL987-049-00 LOCAT I ON: See Site Map DRILL TYPE: Mobile B~'61 DRILLED BY: R, Lawrence LOGGED BY: 3. Wright _ ELEVATION: TOP OF HOLE: - - REMARKS: 67 f~Pr ~n,,~h nna 2 f~et east of southeast. GROUNDWATER: -- corner of existing warehouse DATE: STARTED: 7/02/87 COMPLETED: 7/02/87 ~~ ~ ~ GRADATION ' ~NGINEERING . ~ = ~ ~ --m PERCENT ~ROPERTIES': ~- =~ ~ ~ ~ ~ -- R~TAINED EST, TYPE ANC ~ CLASSIFICATION AND DESCRIPTI'ON ~o~ --= --~ -x _ S~, Silty; moist, fine to , Field drager - Total Hydro- carbons 10 SILT, Sandy; moist, non-plastic,LRS 25 - light bro~ (~) 15 S~, Poorly Graded; fine to LRS Not Detected medium grained, moist, tan (SP) 20-- LRS Not Detected LRS ~ Not Detected 25-- Bottom of Boring ................................................................................................~ The rWinin l=bo atopies, Inc. ~ Wsalia Fresno Mo~esto Ba~erstield PROJECT: OLD CORPORATION YARD HOLE No.: B-15 JOB'No: TL987-049-00 LOCATION: See Site Map DRILL TYPE: Mobile B']~i 'DRILLED BY: R, Lawrence LOGGED BY: T. Wright ELEVATION: TOP OF HOLE: - - FT. REMARKS: 58 feet south and 6 feet west of southeast GROUNDWATER: - - corner of existing warehouse )ATE: STARTED: 7/02/87 COMPLETED: 7/02/87 ~ > . > GRADATION ENGINEERING = = ~ -- ~ PERCENT PROPERTIES' ~ =~ ~ ~ ~ ~ -- ~TAINED TEST, TYPE AND ~ CLASSIFICATION AND DESCRIPTION ~o~ -- = -- ~ ~ x ~ ~m ~ o o =-- ~ ~ ~PLATE NUMBER - SAND, Silty; fine to medium Field Drager _'grained, ~oist,'B~own ........... (SM) ....... Total Hydro- carbons 5-- SILT, Sandy; moist, non-plastic LRS 10- brown, micas (ML) 15-- SAND, Poorly GRaded; moist, fine LR: to medium grained, tan (SP) 20-- Becoming light brown LRS -/SILT, Sandy, moist, non-plasti~ brown (ML) LRS 25 Bottom of Boring The Twining Labo .atoPies, Inc. Vlsalia Fresno Modesto Bakersfield MAJOR DIVISIONS GRAVELs (More than ','~ of coarse fraction> no. 4 sieve size) .SANDS (More than ',~ Of coarse fraction < no. 4 sieve size) SILTS & CLAYS LL < 50 SILTS & CLAYS LL · 50 HIGHLY ORGANIC SOILS SYMBOLS GW GP GM GC SW SP SM SC ML CL OL MH CH OH Pt TYPICAL NAMES Well-graded gravels or gravel-sand mixtures, little or no fines Poorly graded gravels or gravel-sand mixtures, little or no fines Silty gravels, gravel-sand-silt mixtures Clayey gravels, gravel-sand-clay mixtures Well-graded sands or gravelly sands, little or no fines Poorly graded sands~or gravelly-sands,.-little~or: no; fines _.-.-~ - :-:.--?_-~:--_: ................ ~ Silty sands, sand-silt mixtures Clayey sancta, sand-clay mixtures Inorganic silt§ and very fine sands, rock flour, silty or clayey fine sands or clayey silts witl3 slight plasticity Inorganic clays of Iow to medium plasticity, gravelly clays, sandy clays, silty clays, lean clays Organic silts and.organic silty clays of. low plasticity_ ..... Inorganic silts, micaceous or diatomaceous fine sandy or silty soils, elastic silts Inorganic clays ~f high plasticity, fat clays Organic clays of medium to high plasticity, organic silty clay, organic silts Peat and otl~er highly organic soils UNIFIED SOIL CLASSIFICATION SYSTEM COHESIVE SOILS GRANULAR SOILS Description Blows/ft. Description Blows/ft. very soft ~ 2 very ~oose ~ 5 soft 2.: z+ ~oose 5- 1 0 medium(firm) 5 ' 8 medium dense 1 1 - 3 0 stiff 9 - 1 5 dense 3 1 - 50 very stiff I 6 - 3 0 very dense ~ ~ 0 hard > 30 CONSISTENCY CLASSIFICATION '- CLASSIFI'CATION Grain Type Boulders Cobbles Gravel coarse (c) fine (f) Sand coarse (c) medium (m) fine (f) Silt & Clay RANGE OF GRAIN SIZES U.S. Standard Sieve Size above 12" 12" to 3" 3" to no. 4 3" toY, ~' to no. 4 no. 4 to no. 200 no. 4 to no. 10 no. 10 to no. 40 no. 40 to no. 200 below no. 200 Grain Size in Millimeters above 305 305 to 76.2 76.2 to 4.76 76.2 to 19.1 19.1 to 4.76 4.76 to 0.074 4.76 to 2.00 2.00 to 0.420 0.42o to o.074 below 0.074 GRAIN SIZE CLASSIFICATION X 40 .,~?~J 20 '- CL _~ CH 0 10 20 30 40 50 60 70 80 90 100 LIQUID LIMIT PLASTICITY CHART · The Twining Laboratories, Inc. CHAIN OF CUSTODY RECORD Project No. ~:~ ~')q -- ['~) 4fl ~--'~A ~~'~"(~-'~:~ Affiliation of Sampler/Shipper Address~'~ ~%~-~''~¢~ ~' State Number Street . ~ Signature Zip Telephone Sample Receiver Address Date/Time Received Comments Collector's Sample No. Chain of Pos~,~sion: ~'~ 1, ~/~ ~ '~:~ig nat~~ ' Signa'ur~ ~ '~ ~ignature . Sample Description, Analysis Requested ..~.~_,~/~_ r\ rt.-r:,: ,-. Af,~ation · __~..jf fillet ion Affiliation Inclusive Dates Inclusive Dates tnclusive Dates inclusive Dates ; The Twining Laboratories, Inc. · CHAIN OF CUSTODY RECORD Project No. (~ ~-?~ ...- ~a.'~ ~ ~_.~"'~P, DatelTimeSampled ~' ~0/~ -- ~ /~/~ Affiliation 0f Sampler/Shipper '-~'~t~tt'~'~ :~ - - State Zip Telephone . Number Street~ ~ity Collec{~r,s Namo ~~ ~L~ ' -Transported By '~L~' ~./n, ~"'~/~-~-~, ~ .... Date Shipped ~ ~- ~ ' Sample Receiver Address Date/Time Received Comments Collector's Sample No. /~filiation /( /Affiliation Affiliation Sample Description Analysis Requested ~ln~cl sive Dates " ¢2 Inclusive Dates inclusive Dates Inclusive Dates The Twining Laboratories, Inc. CHAIN OF CUSTODY RECORD Date/Time Sampled ~ AffiliationofSamplerlShippe ~" _ ~ I. t Address -/ ~ - . zip Telephone State Number Street I City Col!~ctor's Nam ~ignature · - Transported By ' Sample Receiver Address Date/Time Received Comments Collector's Sample No. Sample Description Analysis Requested_ Atfiliation 2/ /Affiliation '-" Affiliation Inclusive Dates ' clusive'-Da'tes ~ ~-Tq _ Inctuswe Dates Inclusive Dates The Twining Laboratories, Inc. "' CHAIN OF CUSTODY RECORD Project No. ' ' -" Cc Date/Time Sampled ~~ -Affiliation of Sampler/Shipper "~,~ ,,~,.~h.-~ ~..~,, ~)5 -' State Zip Telephone Co,lec~ tor'sN~r~~ Signature Transported By ~/.'[~'. ?-%/j~ ~//~'~ i.,i~_~.-.--~, _ Date Shipped Sample Receiver Address Date/Time Received Comments Collector's Sample No. Sample Description uested 'Inclusive Dates Inclusive Dates Anal /inclusive uates · [nciusi~ Dates The Twining. Laboratories, Inc. CHAIN OF CUSTODY RECORD Project No. C~ (~"~ ' ~") d(""~( DatelTime Sampled ~ [~~ '- Affiliation of Sampler/Shipper ~.~ ~%~' Address~ ~~ ~[~ ~ ~~'~ ~ Number Street Ci~ State Zip Colleqtor's Na~~~ ~ ~ Signature Telephone Sample Receiver Address Date/Time Received Comments Collector's Sample No. Sample Description Analysis Requested I'/',~.,., _~.. r~.-c:._j~,--_ Chain of Poss,essiew,; ! Sig~tur~_ 3.~ ~-~,~- - Sig~ture~J ~ ~ S~atur~ Affiliation /j Affiliation - .~ 7-~,fl L Affiliation I~n.clus?e Dates Inclusive Dates Inclusive Dates The Twining. Laboratories, Inc. · ' CHAIN OF CUSTODY RECORD Project No. q ~'~'~ -- ~- ~'~ ~--~"~--~*~ ~--~7 Date/Time Sampled ~ ~ - Affiliation of Sampler/Shipper -"~,.,j~?-~_.... Address _~ '2--x~ ~'~ Street/~) f~;ity State Zip Collector's Name---~'~t"'~c~[v-~ (,_ L...,~."~- "' I Signature Transported By /_,~ Telephone ' Date Shipped ~ Sample Receiver Address Date/Time Received Comments Collector's Sample No. A-tL- .~t' 1 Chain of Pos essio · .. ,,_Y. - ~1 // ~ //' , . 2.':'_ ~'_ .. ~d'_~ . ," '/: / (.- Z.~,"' '-. '.~.:,~. _: Signatur(~ ' ',, Sample Description Analysis Requested Aff~ation f / Affili~ion .... i iation Affiliation inclusive Dates Inclusiv~ Dates Inc usive DaTes' The Twining L boratories, Inc. CHAIN OF CUSTODY RECORD Project No. Date/Time Sampled Affiliation of Sampler/Shipper '~-~ ~ ,...... ;,~. ~.~. Number Street ~,~ (.%City ,,f ' State Collector s Narn_.e_ "'"~ ~ ~/,..~~ ' ~--J') ~ ~ 7 ''~ Signature ~ .~ · f --- Transported B~~ .//~ ~'_ ..~,'./~_~ ' Sample Receiver Zip 'Telephone Address Date/Time Received Comments Collector's Sample No. Chain of Pos~sion~ ~. ~----~:2 Signature/ ..... ' ~ Signature I  ' ~gnature . _Sample Description Analysis Requested .,/Affiliation // Affiliat~n · Affiliation Inclusive Dates Inclusive Dates Inclusive Dates Inclusive Dates' The Twining Laboratories, Inc. CHAIN OF CUSTODY RECORD Date/Time Sampled ' -~ Affiliation of Sampler/Shipper ~ . . ........ . ~ ~ , ~ ~ty--- ' State. Zip . Telephone Colle,ctor's Nam ~"-'~.~) Transported B y~ .~-'~?~'../ ~ '~ '"~: ~"-'"-~;'- ..... Date Shipped _. ~ /7_..~:~~7 .:-- Sample Receiver ' Address Date/Time Received Comments Collector's _Sample No. Sample Description ~lfiliat~on Affili,~tion ~ · __~ 'liation ,..// Affiliation Chain of ~sessi~.,~: ~) · ~ Signature .~ ~- ~" ' Signature ~ - ~: ..... Signature ~ Analysis Requested Inclusive Dates Inclusive'Dates .Inclusive Dates · The Twining Laboratories, Inc. CHAIN OF CUSTODY RECORD  rojectNo. ~ ate/Time Sampled - ~"~L~''') ~ ~ ~.:,,.~ Affiliation of Sampler/Shipper - ~ ~ State Zip Telephone Collector's Nam~~' 6%' ' Transported By a, sh,p, d Sample Receiver Address Date/Time Recbived Comments Collector's Sample No. Sample Description Analysis Requested .._..Affiliation ?/ ' Affiliatio~ /1 - JAffiliatio~ - Affiliation Inclusive Dates Inclusive Dates Inclusive Dates Inclusive Dates 1 GEOTECHNICAL ENGINEERING INVESTIGATION SOIL CONTAMINATION ASSESSMENT FUEL STORAGE TANKS CITY OF BAKERSFIELD OLD CORPORATION YARD BAKERSFIELD, CALIFORNIA-~- ...... ~-- Presented to: City of Bakersfield Department of Public Works 1501 Truxtun Avenue Bakersfield, California 93301 OCT o 2 1987 DEPT. Fresno Modesto Visalia Bakersfield TL 987-049-00 1.0 2.0 3.0 4.0 5.0 6.0 7.0 8.0 9.0 TABLE OF CONTENTS, INTRODUCTION ............................................ BACKGROUND INFORMATION ................................ 2.1 Site Description ................................. ~2.1 Project History .................................. PURPOSE A,ND SCOPE OF INVESTIGATION .................... SAMPLING AND TESTING PROCEDURES ....................... RESULTS AND FINDINGS .................................. 5.1 Soil Profile ..................................... 5.2 Groundwater. Conditions· ........................... 5.3 Results of Chemical Analysis ..................... EVALUATION ............................................ CONCLUSIONS ........................................... RECOMMENDATIONS ....................................... LIMITATIONS ........................................... PAGE 1 2 2 2 7 7 7' 8 11 13 14 16 LIST OF APPENDICES: APPENDIX A - Logs of Borings ............................... APPENDIX B- Chain-of-Custody Documentation ................ A-1 Fresno Modesto Visalia Bakersfield LIST OF T~BLES Table I - Soil Sample Field Analysis Table II - Soil Sample Laboratory Analysis ~IST OF DRAWINGS Drawing No. 1 - Vicinity Map Drawing No. 2 - Site Map and Boring Locations Drawing No. 3~ - Depth to Groundwater .... ~ - (Kern County Water Agency) Fresno Modesto Visa~ia Bakersfield 'Geotochnicaland EnvironmentaIGonsultants · fingineedngand Ghemical Laboratodo~ GEOTECHNICAL ENGINEERING INVESTIGATION SOIL CONTAMINATION ASSESSMENT CITY OF BAKERSFIELD OLD CORPORATION YARD BAKERSFIELD, CALIFORNIA 1 · 0 INTRODUCTION This report presents, the results of a contamination investigation of the soils beneath the area where four underground storage tanks were located at the City of Bakersfield Old Corporation Yard in · Bakersfield, California. The scope of our services were authorized by Mr. Rick Ambrose of the City of Bakersfield Department of Public Works via a signed contract dated May 20, 1987. The contents of this report include background information concerning the project history. In addition, a description of our investigative procedures used, and the subsequent results obtained are presented. Finally, we have provided our evaluation of the findings, and related conclusions and recommendations. The appendices of this report contain the logs of the test borings, a copy of the chain-of-custody documentation. The .investigation was performed during July and August of 1987 by the Bakersfield Office of Twining Laboratories, Inc. The chemistry testing was performed by the Analytical Chemistry Division of Twining Laboratories'Inc. located in Fresno, California. 2527 Fresno Street · P.O. Bdx 1472 Fresno, California 93716 · (209) 268-7021 [2] 9401 West Goshen Avenue Visalia, California 93291' · (209)651-2190 1405 Granite Lane, Suite I ~ 5301 Office Park 0rive, Suite 310 Modesto, California 95351 · (209) 523-0994 Bakersfield, California 93309 -(805) 322-5216 page 2 TL 987-049-00 regard .0 ~ .......... The following section presents baCkground information with to :the-dDscriPti°n of t~e-site and ~the P~:°~ect hi~'~6~'Y' ~ ..... · old corpOration Yard facility is 2.1 ~: The Drawing No. 1 located at 1612 "S" street in Bakersfield' california' approximate location of the project is a vicinity map showing the ............. - ....... ~' ......... 300 feet south of ...... Site'The project site is located approximately and abOut 3 acres in Truxtun Avenue- The site is rectangular in shape size- The site is bound by "S" street .to the West, .Atchison Topeka and Sante Fe Railroad to the south, and alleys to the east and to the north- A site plan is presented on Drawing No. 2 which shows the ma~or features of the site. ' : On MarCh 26 and 27, 1987, ~our 1 00'0 2.2 ~ ingle-walled and one 500 gallon s gallOn, one 10,000' gallon, underground storage tanks and associated piping were removed from the project site- The approximate location of the tanks and appurtenant equipment are presented on Drawing No- 2. According to City of Bakersfield personnel, one 1,000 gallon tank and the 10,000 gallon tank had been used for gasOline stOrage' the remaining three 1,000 gallon tanks had been used for No. 2 Diesel Storage, and the 500 gallon tank had been used for fuel oil storage- The tank removal and by RemaCO, Inc. of Bakerfield, disposal operations were performed california- After t~he underground storage tanks were removed from the ._ ground,-soil sampleS were collected by soils Engineering' %nc at Modesto V%$atia Fresno VICINITY MAP 1 OLD CORPORATION YARD NORTH OLD CORPORATION YARD BAKERSFIELD, CALIFORNIA SCALE: DATE ' = NTS DRAWN BY: IAPPROVED BY: ORAWING NO. I o~ 3 The Twining Laboratories, Inc. ~NO/~O0~TO /vISALla/gA~E~SF~EL= PARKING 987-049-00 WA~EH0USE PARKING SHED A/C PAVED YARD AREA B-5 ~ B-6 .rESEL TAN-KS B-3 NORTH '-~-~- B-jo B- ' ~~FUELa_~_ tX~-l~ 0IL TANK B-~- I ~'/ ~ PARKING SHED .. +- EXPLORATORY SOIL BORING NUMBER AND APPROXIMATE LOCATION The Twining OLD CORPORATION yARD BAKERSFIELD, CALIOFRNIA $CAL£: NTS DRAWN ElY: 2 o~ 2 L(~borofories, Inc. FRESNO/MoOESTO ,/VISALIA /BAKERSFIELO TL 987-049-00 · .- Page 3 depths of about 2 feet and 6 feet below the bottom of the tanks. According to Mr. Pat Mullhofer of Remaco, Inc., no holes were noted in the tanks when the~ ~Were removed. ~' On April 3, 1987, the test results of the soil samples collected at the s.ite were reported to Mr. Mark Pishinsky of' the Kern County Health Department. The test results indicated low levels of Benzene (0.27 ~0~-'35 80 mg/kg) and high levels -6~f' T0-~i ~ydr'0Ca~onS (2~.58 to 11621.84 rog/kg). In a letter dated April 20, 1987, Mr. Pishinsky stated that the test results indicated significant levels of Total Petroleum Hydrocarbon contamination and that a site characterization to determine the extent of contamination in the soil surrounding the tanks and piping would be required. On May 4, 1987, a meeting was held with Mr. Gary Roush of the City of Bakersfield, the property owner, and Mr. Theodore Wright of Twining Laboratories, Inc. Mr. Pishinsky of the Kern County Health Department was also contacted by telephone on this date. The purpose of the meeting and the telephone conversation was to discuss the concerns of all parties involved and develop a work plan that would address those concerns. In brief, it was decided that a minimum of twelve test. borings would be drilled in the area suspected to have soil contamination. The investigation would consist of collection and field analysis (with laboratory confirmation) of respresentative soil samples in and around the area of soil contamination. Twining Laboratories, Inc. was requested by Mr. Rick Ambrose of the City of Bakersfield Public Works Department to prepare a work plan 'for this Fresno Mpdesto Visalia Bakersfield TL 987-049-00 Page 4 phase of the project. A work plan was submitted by Twining Laboratories,~ Inc. to Kern ........ County Health Department (KCHD) and M'r. Rick Ambrose of th'e City of Bakersfield· Upon review of the work plan authorization was given to Twining Laboratories Inc. to proceed with the work as outlined in the work plan with the following exception: Kern County Environmental Health- Department requested-that T6t~l ~Petro-i~-~m for No. 2 Diesel be in accordance with the State of California }{azardous Materials Laboratory requirements. This does not require the performance of oil and grease tests as outlined in our work plan· 3.0 PURPOSE AND SCOPE OF INVESTIGATION The purpose of this invest'igation was to determine the general horizontal and vertical extent of diesel and fuel oil contamination in the areas where underground storage tanks had been located at the' project site. A summary of the actions taken during our investigation is outlined as follows: A meeting was held with Mr. Gary Roush of the City of Bakersfield Department of Public Works and Mr. Theodore Wright of Twining Laboratories. to discuss the concerns of the City of Bakersfield regarding the project. A telephone conversation was held between Mr. Mark Pishinsky of KCHD and Mr. Theodore Wright of Twining Laboratories, to discuss the concerns of the KCHD regarding the project. Fresno Modeslo Visalia Bakersfield TL 987-049-00 Page 5 f~ 3. A work plan was developed and submitted to KCHD for review and subsequently accepted. 4. A site reconnaissance and field investigation were conducted. Laboratory tests were conducted on soil samples obtained from the project site. The data obtained from our field and laboratory investigations were evaluated to develop con- cI~Sio~s and recommendations w~th'regard to ~he extent of diesel and fuel oil contaminated soils at the site. 4.0 S_AMPLING AND TESTING PROCEDURES On June 30, July 1 and July 2, 1987, fifteen exploratory borings were drilled at the locations shown on Drawing No. 9. All field drilling and engineering services were provided by Twining Laboratories, Inc. personnel· The boring locations were measured from the tank locations identified by survey markers installed by the Ci.ty of Bakersfield. The exploratory borings were drilled using a Mobile' B-61 drill rig equipped with 8 inch diameter, continuous flight hollow stem augers. Continuous logs of the soils encountered in the borings were recorded· Undisturbed soil samples were obtained from the borings at intervals of 5 feet beginning at a depth of about 10 feet below site grade· Each soil sample was obtained by pushing or driving a thin-walled steel sampler equipped with pre-cleaned brass tubes approximately 12 inches into the soil. 'Selected soil samples were field screened for diesel constituents using Total Hydrocarbon Drager Tubes (with a minimum detection limit of 100 part~p~ millix)n). The Fresno Modes~o VisalJa Bakersfield TL 987-049-00 Page 6 test borings were terminated at a depth of between 25 and 40 feet. After the soil samples were obtained and in accordance with the authorization-of Mr. Mark Pishinsky of '-KcH~D-~ the exploratory borings were loosely backfilled with the material excavated during the drilling operations. The soil samples obtained from the site were retained in the brass t~ubes. The ends of each brass tUbe were covered with aluminum foil and plastic end caps, sealed with electrical tape, and immediately cooled to 4°C for shipment to our Fresno laboratory. Strict chain-of-custody procedures were followed during the transportation and handling of the soil samples. The soil samples were received at our Fresno laboratory on July 2, 1987. Each soil sample was analyzed for the presence and concentration of the following diesel constituents: Benzene Toluene Xylenes Total Petroleum Hydrocarbons The diesel constituents listed above are those items required ~Y the Kern County Health Department for this assessment. The analytical methods used during our teSting program were those approved by EPA and are presented as follows: TL 987-049-00 Page 7 COnstituent Test Methods SW-846: Methods 5020, 8020 SW-846: Methods 5020, 8020 .... ~A_ E,,~l,~in~ S ' W P ' T M . . · Me d d Ed' ' U S. EPA · Benzene, Toluene, Xylenes Total Petroleum ~{ydr0.c_arb°ns SW-846: 5.1 ~oil Profile_: The soil profile at the project site generally consists of silty sands to depths ranging from 10 to 20 feet underlain by poorly graded sands and sandy silts to the depths explored. Based on the rate of drilling, the soils were generally loose to medium dense. Visual observation indicated that natural moisture content remained at moist conditions to a depth of 41.0 feet, the maximum depth explored- The foregoing is a general summary of the subsurface conditions encountered in the borings drilled for this investigation. Detailed descriptions of the soils encountered in the borings are presented on the logs of borings in Appendix~A of this report. The stratification lines shown on the logs represent the approximate boundary between soil types; the actual in-situ transition may be gradual. 5.2 G_roundw~ter Conditiona: Groundwater was not encountered in the borings drilled at the time of our field investigation (June 30, July 1 and 2, 1987). The Kern County Water Agency Water Supply Report of 1986 indicated the depth to groundwater to be approximately 150 to 175 feet in the area of the project site. Drawing No. 3 presents a copy of a map from this report outlining ~'he de~h to grourudwater in -. · Fresno Modesto Visalia Bakersfield IPROJECTNo.. 987-049-00 'DEPTH TO GROUNDWATER (From Kern County Water Agency Water Supply Report- 1986) OLD CORPORATION YARD BAKERSFIELD, CALIOFRNIA TL 987-049-00 Page 8 the vicinity of the Corporation Yard site. 5.3 Results of Chemical Analysis: results of field tests of the soil samples using Total ~ydrocarbon Drager Tubes. Table No. II presents the analytical results of the laboratory analysis of the soil samples obtained during this investigation · . ........... - ..... Table No. I presents the B-2 B-3 B-4 B-5 T I - ' S · . A Depth Field Drager Tube Readings, _TQtal ~{vdrocarbon, ppm ND 10 ND 15 ND 20 ND 25 50 10 ND 15 25 20 50 25 ND 30 ND 35 ND 40 10 75 15 100 20 ND 25 ND 10 ND 15 50 20 50 25 ND 30 ND 35 10 ND 15 ND 20 .- Fresno Modesto Visaha Bakersfield TL 987-049-00 Page 9 B-'7 B-8 B-9 B-10 B-11 B-12 B-13 B-14 Depth F~et 10 15 20 10 15 20 10 15 10 15 20 10 15 10 10 15 20 25 10 15 10 15 20 25 Field Drager Tube Readings, Total Hydrocarbon, ppm I5 100 25 ND ND Fresno Modesto Visalia BaKersfield ~ Page 11 TL 987-049-00 ~. Iso-prop ne xvlenes Benzene TVOH Date ~-~ Benzene Toule . .,_e.s ~j~~ Bo ' Fe ' _ B-14 10 ND ND ND ND ND 08-06-87 B-14 15 ND ND ND ND ND 08-06-87 ND ND ND ND ND 07-23-87 ND ND ND ND ND 07-23-87 B-14 20 '25 B-14 ~ B-15 10 ND ND ND -B-15 · ' ......... 1-5 -- -~ND ......... .ND _. ND B-15 20 ND ND ND ND ND 08-06-87 _ ND .... ND ~-07-23-87 ND ND 08-06-87 6 · 0 EVALUATION The purpose of this investigation was to determine the general horizontal and vertical extent of diesel contaminated soil beneath the area where underground storage tanks were located at the project site. As previously discussed, the test results of the soil samples obtained during tank removal operations revealed iow concentrations of Benzene and high concentrations of Total Hydrocarbons. The soil samples were taken from the bottom of the tank excavations, near the centers of the tanks, at depths ranging from 10 to 14 feet below site grade. During this investigation, one boring each was advanced in the area where the center of the tanks were located, and the remaining borings were advanced around the perimeter of the tank excavations- The results of the soil samples selected for analysis obtained from these test borings revealed non-detectable concentrations of Benzene and xylenes and low concentrations of Toulene and Total i{ydrocarbons- The tank excavations remained open for a period of about 3 months prior to our field investigation- During this time period, the surface soils in the excavations had an opportunity t~ aerate%. ThiS~ Fresno MoQesto ' ' TL 987-049-00 Page 10 Boring B-1 B-1 B-2 B-2 B-2 B-2 Table II - Soil Sample Laboratory Analysis Depth, Benzene Toulene Xylenes Feet mg/kg mg/kg mg/kg 10 ND ND ND '"15 ND ND ND 20 ND ND ND 10 15 25 30 B-3 15 ND 0.10 ND B-3 20 ND 0.08 ND B-3 25 ND ND ND B-4 15 ND 0 o13 ND B-4 25 ND ND ND B-4 30 ND ND ND B-5 10 ND 0.25 ND B-5 15 ND ND ND B-5 20 ND ND ND B-6 10 ND ND ND B-6 15 ND 0.15 ND B-6 20 ND ND ND 10 ND 15 ND 20 ND B-7 B-7 B-7 B-8 10 ND 0.07 ND 0 · 17 ND ND ND ND ND ND ND B-9 10 ND B-10 10 ND ND ND B-10 15 ND ND ND ND ND B-ii 10 ND B -12 10 ND ND ND B - 12 15 ND ND ND B - 12 20 ND ND ND Iso-pr op . .................... : ..... Benzene TVOH Date ma/kg ma/kg Analyzeti ND ND 08-06-87 ND ND 07-23-87 ND ND 08-06-87 ND ............ 140 .-08-06-87 ND 5.2 08-06-87 ND ND 07~23-87 ND ND 07-23-87 ND 69 08-06-87 ND 110 08-06-87 ND ND 07-23-87 ND 54 08-06-87 ND ND 07-23-87 ND ND 07-23-87 ' ND 18 08-06-87 ND ND 07-23-87 ND ND 08-06-87 ND 84 08-06-87 ND 11 07-23-87 ND ND 08-06-87 ND 96 08-06-87 ND 20 08-06-87 · ND ND 07-23-87 ND ND 07 23-87 ND ND 07-23-87 ND' ND 07-23-87 ND ND 07-23-87 ND ND 07-23-87 ND ND 08-06-87 ND ND 07-23-87 ND ND 07-23-87 Fresno Modesto Visalia Bakersfield TL 987-049-00, Page 12 could partially explain the non-detectable concentrations of Benzene ..found in the soil samples taken from the test borings adyanced in the area where the initial soil samples had been taken. Based on the results of the analysis of the soil samples obtained from'our test borings which revealed relatively low concetnrations of Toulene and Total }{ydrocarbons, the depth of attenua.~!on .for the constituents at about 20 feet, and the approximately 150 feet of separation between groundwater and the soil containing detectable concentrations of Total Hydrocarbons, it is our opinion that the diesel components remaining in the soil do not pose a threat to the underlying groundwater and that no further soil excavation is warranted at this site. To prevent a conduit for surface runoff into the excavation and to provide a stable subgrade for future site development, the material that was placed in the excavation in order for our firm to gain access to advance our exploratory borings should be removed and recompacted as engineered fill. In addition, an asphalt pavement section should be placed on top of the backfilled excavation to rapidly drain surface runoff away from the backfilled areas. Fresno Modesto Visalia Bakersfield Tr, 987-049-00 Page 13 7.0 QONCLUSION~ On the basis of the findings presented in this report, we present the following conclusions: 7.1 The soil profile at the site generally consists of silty sands to depths ranging from 10 to 20 feet . underlain by poorly graded sands and sandy silts to the depths explored. 7.2 Based on data obtained from the Kern County Water Agency Water SuppY Report of 1984, groundwater is located at a depth of about %75 feet below site grade · 7.3 Based on the seven exploratory test borings placed in the area of the three 1,000 gallon diesel storage tanks, diesel contaminated soils ap- pear to attenuate at a depth of about 20 feet below site grade. 7.4 Based on the eight exploratory test borings pla~ed in the area of the 500 gallon fuel oil tank and dispenser, fuel oil contaminated soils are not present below a depth of ten feet. Fresno Modesto Visaha Bakersfield TL 987-049-00 Page 14 8.0 RECOMMENDATIONS The following cons ider at ion: recommendations are submitted for your The loose material in the excavations should be entirely removed and recompacted as engineered fill. 8.2 The on-site soils-which'are free of organics and debris are predominatly silty sands. These soils will be suitable for use as fill material provided the moisture content of the soil'is at or near optimum. Import fill soil should be nonexpansive and granular in nature with the following requirements: Percent Passing 3 inch Sieve Percent Passing No. 4 Sieve Percent Passing No. 200 Sieve Plasticity Index R-value 100 50 - 100 0 - 30 Less than 10 Minimum 40 The import fill material, prior to use should be approved by Twining Laboratories, Inc. 8.3 Engineered fill soil should be placed in lifts approximately 6 inches thick, moisture-conditioned as necessary, and compacted at or near optimum moisture to achieve a dry density of at a 92 Fresno Modesto Visalia Bakersfield TL 987-049-00 Page 15 percent of the maximum'dry density as determined by ASTM Test Method D1557-78. Additional lifts should not be placed if the previOus lift did'- not meet the required dry density or if soil conditions are not stable. The-backfilled eXcavati°n should be capped with an asphaltic concrete pavement to rapidly drain surface runoff away from the backfilled area. The asphaltic concrete pavement should be designed to support the anticipated traffic conditions. Fresno Modesto Visalia Bakersfield TL 987-049-00 Page 16 9.0 LIMITATIONS The evaluation, conclusions, and recommendations contained in our report are based, on the site Conditions as they existed at the time of our investigation, and further assume that probes, such as exploratory borings, are representative of the soil conditions at the site, i.e. the soil conditions everywhere are not significantly different from ~those disclosed by the probes. 'If different subsurface conditions from those encountered during our exploration are observed or appear to be present, we must be advised promptly so that we can review these conditions and reconsider our conclusions and recommendations where necessary. If there is a substantial lapse of time between the submission of our report and the start of additional work at the site, or if conditions have changed at or adjacent to the site, we recommend that our report be revieWed to determine the applicability of the conclusions and recommendations.considering the changed conditions and time lapse. Our professional services were performed, our findings obtained and our recommendations prepared in accordance with generally-accepted engineering principles and practices. This warranty is in lieu of all other warranties, either expressed or implied. Fresno Moc~esto V~saha Bakersfield TL 987-049-00 Page 17 We appreciate the opportunity to be of service to the City of Bakersfield on this project. If you should have any questions regarding this .report or if we can be.of further assistance, please contact our office. Sincerely, THE TWINING LABORA'TORIES, INC ~ .Theodore D. Wright, RCE #33710 Engineering Manager Bakersfield Office (exp. 6-30-90) TDW/km 3c: herewith B F Fresno Modesto Visalia Bakersfield TL 987-049-00 Page 18 APPENDIX A Fresno Modesto Visalia Bakersfield TL 987-0419-00 A-1 APPENDIX A LOG OF BORINGS This appendix contains the final logs of borings. These logs represent our interpretation of the contents of the field logs and the resul'ts of the field tests. The boring logs and related information depict subsurface conditions only at these locations .and at the particular time designated on the logs. Soil conditions at other locations may differ from conditions occurring at these boring locationS. Also, the passage of time 'may result in changes in the soil conditions at these boring locations. In addition, an explanation of the abbreviations used in the preparation of the logs, and a description of the Unified Soils Classification System are provided. Fresno Modesto Visalia Bakersfield ~'TL 987-049-00 A-2 LOGS OF EXPLORATIONS EXPLANATION OF ABBREVIATIQNS Split barrel ring sampler, 2.5-inch I.D., for taking undisturbed samples. 7 P ROJECT:~ OLD'COciTy_____ofRPO~,,~__~ ~YAW H~I~ No.: - B~ERSFIELD SHt-ET No. 1 OF. 1 JOB No: ~987-049~00· LOCATION: See Site Map DRILL TYPE: Mobile B-61 DRILLED BY: R, Lawrence LOGGED BY: T. Wright ELEVATION: TOP OF HOLE: - - REMARKS: 1 foot south and 31 feet east of southe'ast GROUNDWATER: - - COrn~rnf~v~ringw~rehO'~se- DATE: STARTED: 6-30-87 - COMPLETED: 6-30-87 ~ ~~ ~ ~ GRADATION ENGINEERING ~' ~ ~ ~ ~ ~-- ~ PERCENT PROPERTIES: ~ CLASSIFICATION AND DESCRIPTI~ON ~- z~ m ~ 'RETAINED FEST, TYPE AND m ~= ~ o o =-- ~ ~ ~:LATE NUMBER _ SAND, Poorly Graded, moist, fine to-mediumgrained,-tan .... ......... ~ ............ .-= ....... - .......... . ........... _~ - - micas (sp) 5-- - Field Drager _ TubeReading~ Total Hydro- - carbons' 10-- LRS Not Detected 15I ;RS ' Not Detected 20-- ;RS ;Not Detected SILT,Sandy; moist, non-plastic, i golden (ml) ~RS Not Detected 25 Bottom of Boring - ! The. Twining Laboratories, Inc. Vlsalia Fresno Moclesto TLI~ PROJECT: JOB No: OLD CORPORAT~N YARD CITY of BAKE~I~F%ELD TL987-049-00 DRILL' TYPE: Mobile DRILLED BY: R, Lawrence LOGGED BY: T. Wright REMARKS: 11 F~t ~n.tb and 3% feet East of southeast! corner of existing warehouse CLASSIFICATION AND DESCRIPTI'ON SAND, Silty; moist, fine to medium grained,..brown HOJi~No.: SHI~ No. LOCATION: B-2 1 OF 2 See Site MaD ELEVATION: DATE: TOP OF HOLE: - - GROUNDWATER: - - STARTED: 6-qn-~7 COMPLETED: 6-gn-R7 GRADATION INEERING PERCENT ES: ]TAINED TYPE AND ATE NUMBER Field Drager Tube Readings Total Hydro- carbons 5O Not Detected SILT, Sandy; moist, non-plastic golden (ML) 25 SAND, Poorly graded; moist, fine to medium grained, tan (SP) 5O The Twining Visalia Fresno L abora t°j ies, Inc. Modesto Bakersfield TLIO LOG OF BORING P~OJECT: OLD YARD No.: B-2 CITY of BAKERSFIELD SHEET No. 2 OF 2 JOB No: TL987-04'~-00 L0CAT I ON: See Site Map DRILL TYPE: Mobile B-61 DRILLED BY: R, Lawrence LOGGED BY T. ............. ~vuu~u u,. zo w:~z~c cLCV~I IUH: IU~ U~ HUL~: - - IT. iMARKS: 11 f~et south and 91 feet east o,f'.southeasr GROUNDWATER: - ~ corner of existing warehouse · DATE: STARTED:_ 6/30/87 COMPLETED: "6/t0/R'7 · ~ ~, ~ GRADATION ENGINEERING ~.~ ~ ~ -- ~ PERCENT PROPERTIES: CLASSIFICATION AND DESCRIPTI'ON ~ ~ z~ ~ ~ ~ ~ ~c-~ --~ ,~ --~ ~x RETAINED rEST, TYPE AND! ~ ~ ~ oD ~-- ~ ~%~LATE NUMBER <~ = --~ - Field Drager _ Tube Readings~ Total Hydro- ~ carbons LRS 'Not Detected - - - LRS Not De.retted-~ LRS Not Detected J Bottom of Boring ~ ~ The Twining Laba~'ata~.ies, Inc. Vlsalia Fresno ~o~esto ~ekersliel~ TLIO' PROJECT: JOB No: O~,D C~!.~ ~p~ CITY of BAKE!~FIELD TL987-049-00 DRILL TYPE: Mobile Bill DRILLED BY: R. Lawrence LOGGED BY: T. Wright. REMARKS: 18 feet south and 14 feet east of southeast corner of existing warehouse CLASSIFICATION AND DESCRIPTION SAND, Silty; moist, fine to medium-grained, brown' -(SM) No.: LOCATION: B-3 1 OF 1 See Site Map ELEVATION: DATE: TOP OF HOLE: - - GROUNDWATER: - I STARTED: COMPLETED: GRADATION PERCENT TAINED 6/30/87 6/30/87 ~NGINEERING ~ROPERTIES: TYPE AND NUMBER . ger-? Tube Readings~ Total Hydro- carbons Not Detected SAND, Poorly Graded; fine to medium grained, moist, tan i ]IsILT, Sandy;'moist, non-plastic, pbrown (ML) ~ 25 ]Bottom of Boring (sP) The Twining Vlsalia Fresno Labor'ato~,ie$, Inc. Modesto Bakersfield 75 100 Not Detected t TL1C : ~ CTTY of BAK~'FIELD No.---!---10F. 2 .. JOB No: 1'I, 987-049-00 LOCATION: · q~ c~ DRILL TYPE:.. Mob±ZeBu61 DRILLED BY: R, Lawrence LOGGED BY: T. Wright ELEVATION: TOP OF HOLE: - - PT. REMARKS: 12 Feet south and 4 feet east ofsoutheast GROUNDWATER: - - corner of existing warehouse DATE: STARTED: 6/30/87 COMPLETED: 6/30/87 ~ ~ ~ >' GRADATION ~NGINEERING ~ ~ ~ '. .  ~ ~ PERCENT ~ROPERT. IES: CLASSIFICATION AND DESCRIPTI'ON ~ ~ z~ ~ ~ ~ ~ -- RETAINED ' TEST, TYPE AND ~ ~ ~ o o =-- ~ ~ %%PLATE NUMBER _ SAND, Silty; moist, fine to .. medium grained, bro%rn ....... (SM - .... ..- . ..... Field Drager ~ube Readings total Hydro- carbons 5 -- 10 -- LRS Not Detected SAND, Poorly Graded; fine to LRS Not Detected medium grained, micas, tan (SP) 20 -- LR~ 50 ~ - SILT, Sandy; moist, non-plastic I 25 -- oxides ~ brown (ML) 5RS 50 The Twining Labo 'atoJ ies, Inc. Vlsalia Fresno TL1C CTTY of BAKEk~%ELD i SHE~ No. 2 OF 2 O0B No: TL987-049-00 LOCATION: See Site Map DRILL TYPE: Mobile' BL~I DRILLED BY: R, Lawrence LOGGED BY: T. Wright ELEVATION: TOP OF HOLE: - - REMARKS: 12 feet south and 4 feet east of southeast GROUNDWATER: - - corner of existing warehouse DATE: STARTED: 6/30/87 COMPLETED:. 6/30/87 ~ ~'~ > GRADATION ENGINEERING = z ~ -- ~ PERCENT PROPERTIES: ~ CLASSIFICATION AND DESCRIPTI'ON ~ ~ z~ ~ ~ ~ ~ - RETAINED rEST, TYPE AND w ~ ~ o o ~-- m ~ ~x~%%*LATE NUMBER ~ieZd Drager Total carboas 30~ SAND, Silty; moist, fine to ,RS :Not Detected - medium grained, brown (SM) 35-- LRS Not Detected Bottom of Boring The Twining Labo atoJ ies, Inc. Wsalia Fresno Mo~esto Bakerstield TL106 JOB No: TL987-049-00 LOCATION: See Site Map DRILL TYPE: Mobile Bill DRILLED BY: R, Lawrence LOGGED BY: T. Wright ELEVATION: TOP OF HOLE: - - REMARKS: 1 foot south and 3 fee~ east of southeast GROUNDWATER: - - corner of existing warehouse DATE: STARTED: 7/01/87 COMPLETED: 7/01/87 . . ~ ~ ~ GRADATION ~NGINEERINGI = z ~ ~ PERCENT ~ROPERTIES: ~ z~ ~ ~ ~ ~ -- ~TAINED FEST, TYPE AND' ~ CLASSIFICATION AND DESCRIPTI'ON ~c'-'~ -- z -- ~- x -o ~ u > ~ ~: ~,~? ~ xi~%:LATE NUMBER = - SAND, Silty; moist,- fine to Field Drager .- .... -medium~--grained,~rown (SM) - ............ ~' ...... ' '-' ....................... Tu~'-~eading~ - Total Hydro-i _ carbons - 5 -- - SILT, Sandy; moist, non-plastic - brow~a, micas (ML) 10 SAND, Poorly Graded; moist, fin~.LRS Not Detected! to medium grained, micas, tan (sp) ~ ILRS Not Detected 15-- 20-- ~ot Detected SAND, Silty; moist, fine to LRS - medium grained, brown (SM) , _ LRS 25-- Bottom of Boring ............... The Twining. Labo 'ato 'ie$, Inc. Vlsalie Fresno Mocles~o Bakersfield TLIO' PROJECT:~ OL___~D .COR___~~ rHOLE~ No.:B-6 CITY of BAKE"~FIELD SH~ No. 1 OF 1 JOB No: TL987-049-00 !LOCATION: g~e gi~ Mnn DRILL TYPE: Mobile DRILLED BY: R. Lawrence LOGGED BY: T. Wri~h~ ELEVATION: TOP OF HOLE: - - REMARKS: 6 f~ nnr~h ~nd 11 feet e~t of ~o,,the~st GROUNDWATER:' - - corner of existing warehouse DATE: STARTED: 7/O1/~7 COMPLETED: 7/01/87 / ~~ ~ GRADATION ~NGINEERING · ~ = ~ ~ -- ~ PERCENT ~ROPERTIES: ~. z ~ ~ ~ ~ ~ -- R~TAINED rEST, TYPE AND ~ CLASSIFICATION AND DESCRIPTI'ON ~~ --z ~ --~ ~x m %%~LATE NUMBER _ S~, Silty; moist, fine to Field Drager ...... ~. medi~, EraiDed,~ ~cas, bro~ ,.. - -:-~ ...... - ......- ........................... ~ ........ Tube-Readings - (SM) Total Hydro- _ carbons 5- SILT, Sandy; moist, non-plastic, brown to golden (~) S~, Poorly GRaded, moist, fine]RS 25 ~o medium grained,, tan (SP) 15-- Becoming finer grained LRS Not De~ected 20- LRS Not Detected _ I ~RS 25- Bottom of Boring j ~ [ The .Twining L=bo~ato~ies, Inc. _ Visalia Fresno Modes~o Bakerstield TL~ PROJECT: OLD C~PORATI~ONYARD HOLE~No.: B-7 s CITY of-I--I--BAKE~IELD SI No. 1 OF 1 JOB No: TL987-049-00 LOCATION: See Site Map DRILL TYPE: Mobile'B~61 DRILLED BY: R, Lawrence LOGGED BY: T. Wright .ELEVATION: TOP OF HOLE: - - FT. REMARKS: 6 feet south and 14 feet east of southeast GROUNDWATER: - - corner of existing warehouse DATE: STARTED: 7/01/87 COMPLETED: 7/01/87 w ~ ~ ~ GRADATION ,ENGINEERING · ~ = ~ ~ --~ PERCENT PROPERTIES: ~ w- ~ ~ ~ ~ ~ -- ~TAINED TEST, TYPE ANC ~ CLASSIFICATION AND DESCRIPTI'ON ~c'-~ -- ~ ~ -- ~ ~ x ~ ~= ~ o o ~-- ~ ~ ~PLATE NUMBER - SAND, Silty; moist, fine to Field Drager - total Hydro- :arbons 5 -- 10-- Becoming finer grained LRS 100 15-- SAND, Poorly Graded; moist, fin,~LR~ Not Detected _ to medium grained, tan, micas (SP) 20-- LR~ Not Detected 25-- iRS Bottom of Borin~ The Twining 'Labo -ato ies, Inc. Vlsalia Fresno Modesto Bakersfield TLI~ PROJECT:~ OLD .... CORP~ YB_RD Hi No.: CTTY of BAKERSFIELD S~T No. 1 OF 1 JOB No: TL987-049-00 LOCATION: See Site Map DRILL TYPE: Mobile"B-61 DRILLED BY: R, Lawrence LOGGED BY: T. Wri~h~ ELEVATION: TOP OF HOLE: - - ~T. REMARKS: 42 feet south and 8 feet west of southeast GROUNDWATER: - - corner of existin~ warehouse DATE: STARTED: 7/D1/87 COMPLETED: 7/01/87 ~ !~ ~ GRADATION ENGINEERING = z ~ --~ PERCENT PROPERTIES: ~ ~ ~ RETAINED TEST, TYPE AND ~ CLASSIFICATION AND DESCRIPTI'ON ~ z~ ~ ~ ~ -- ~ ~ ~ o o =-- ~ ~ ~%PLATE NUMBER SAND, Silty; moist, fine to ..:=.._~_ ~ie__l_~ D_rager = .... medium grained';'=broW~-mida~;' ' ........... ' .................. ; ................ tube Readings (SM) total Hydro- garbons 5-- 10 - SILT, Sandy; moist, non-plastic, LRS Not Detected micas, brown to gold, (ML) 15~ SAND, Poorly Graded; moist, fine LRS Not Detected to medium grained, tan (SP) 20-- LRS -JSlLT, Sandy; moist, non-plastc, 25 -- liBht brown, micas (~[L) ILRS gmttnm-OF Bor~n~ .............. ' ................. L The Twining. L=bo .ato ies, Inc. Wsalia Fresno Modesto Bakerstleld TL 1 ( _PROJECT: CITY of BAKER~'FIELD JOB No: TL987-049-00 DRILL TYPE: Mobile B'-~i DRILLED BY: R, Lawrence LOGGED BY: T. Wright _ REMARKS: 46 feet south and 3 feet east of southeast _ corner of existing warehouse CLASSIFICATION AND DESCRIPTI'ON SAND, Silty; moist, fine to ~medium grained,.-brown'- ........ (SM)- No.: B-9 No. i__L_OF 1 _ LOCATION: See Site Map ELEVATION: DATE: TOP OF HOLE: - - GROUNDWATER: - - STARTED: 7/01/87 COMPLETED: 7/01/87 GRADATION PERCENT NGINEERING ERTIES: TYPE AND ,ATE NUMBER .eld Drager ibe-Read-ings Hydro- ~arbons SILT, Sandy; mosit, non-plastic light brown (ML) lot Detected SAND, Poorly GRaded; moist, fine to medium grained, tan (SP) tot Detected Detected SILY, Sandy; moist, non-plastic town (ML) of Borin_f=___ The TWining Fresno Labo .ato 'ie$, Inc. Modesto Bakersfield YARD --------- PROJECT: JOB No: TL987-049-00 ------ DRILL TYPE: Mobile B-61 --------- DRILLED BY: R, Lawrence LOGGED BY: T. Wright _ REMARKS: 30 fe_ et south and 2 feet west of southeas___~t corner of existing warehouse. _-------. CLASSIFICATION AND DESCRIPTI'ON No. 1 OF 1 LOCATION: See Site Map ELEVATION: ToP OF HOLE: - - Ft. GROUNDWATER: - - DATE: STARTED: 7/01/87 COMPLETED: 7/01/87 _ GRADATION iNGINEERING PERCENT 'ROPERTIES: iTYPE AND ATE NUMBER SAND, Silty; moist, fine to .:-~-diUm~:~ained-; brown ........ (SM) 'ield Drager Hydro- carbons SILT, Sandy; moist, non-plastic, brown to gold, micas (ML) iot Detected SAND, Poorly Graded; moist, fine to medium grained, tan (ML) Detected Becoming light brown with gravels to 1" maximum Bottom of Boring The Twining L=bo .ato 'ies, Inc. Modesto Bakersfield _ CITY of BAKEI%'FIELD SHEET No. I OF 1 JOB No: ~987-049-00. - · LOCATION: See Site map DRILL TYPE: Mobile B-61 DRILLED BY: R, Lawrence LOGGED BY: T. Wright ELEVATION: TOP OF HOLE: - - FT. REMARKS: 37 feet south and 10 feet east of GROUNDWATER: - - southeast corner of existing warehouse DATE: STARTED: 7/01/87 ._ . .............. COMPLETED: 7/01/87 " ~ ~ ' --~ PERCENT ~ROPERTIES:  AND DESCRIPTI'ON ~ -- RETAINED rEST, TYPE AND :~-= ~ o ~= =-- ~"' %~PLATE NUMBER _ SAND, Silty; moist, fine to Field Orager ..... medium grained ,. brown.,_ micas~ .~ ~ ....................... = .......... ~ -~- ........ ~.~-:_.~- = .......... Tube--Readings - (SM) Total Hydro- carbons 5-- 10 SILT, Sandy; moist, non-plastic LRS Not Detected Light brown, micas (ML) - 15- SAND, Poorly Graded; moist, fin~:LR,~ to medium grained, tan (SP 20-- LRS I _ SILT, Sandy; moist, non-plastic I -- micas, light brown (PfL) 25 LR,~ L bottom of Boring The Twining Laboratories, Inc. - Vlsalia Fresno Modesto Bakersfield TL1C PROJECT: OLD CORPORATION YARD HOLE No.: LD SH No. 1 0~ 1 JOB No: TL987-O49-00 LOCATION: See Site Map DRILL TYPE: Mob%le B-61 DRILLED BY: R, Lawrence LOGGED BY: T, Wright ELEVATION: TOP OF HOLE: - - ~T. REMARKS: A~ F~ south and 0 feet east of southeast GROUNDWATER: - - corner of existing warehouse · DATE: STARTED: 7/01/87 _ COMPLETED: 7/O1/87 · ~ ~ ~_ GRADATION ENGINEERING ~ ~ ~ z ' ~ -- ~ PERCENT PROPERTIES: ~ CLASSIFICATION AND DESCRIPTI'ON ~ ~ z~ ~ ~ ~ ~ -- RETAINED ~EST, TYPE AND ~ ~ ~ o ~ ~-- ~ ~ ~LATE NUMBER SA~TD, Sllty; molst, ~ine to ~ ' ~ield Dra~er .... --medium greined, -.brown Tota - carbons 10 SILT, Sandy; moist, non-plastic LRS ~ot Detected light brown, micas (ML) 15-- SAND, Poorly Graded; moist, fin,~LRS ~ot Detected ~ to medium grained, light brown 20-- LR~ Not Detected - -JSILT, Sandy; moist, non-plastiCl 25 lizht brown (ML) LR~ ~ot Detected Bottom of Borings -- The Twining La'bo atoj ie$, Inc. Visaffa TLIOi CITY of BAKE~'FIELD SH~ No. 1 OF 1 JOB No: TL987-049.~00 LOCATION: See Site Map DRILL TYPE: Mobile B-61 DRILLED BY: R, Lawrence LOGGED BY: T. Wright ELEVATION: TOP OF HOLE: - - 'FT.i REMARKS: .54 feet south and 1 foot east of GROUNDWATER: -- southeast corner of existing warehouse DATE: STARTED: 7/02/87 I [ n~- CLASSIFICATION AND DESCRIPTI'ON -~c'-'~'"- ~"'~ --='~ ~- ~ --I--~ ~-x-- RETAINED rEST, TYPE AND ,,, ~ ~-=: ~ o o =-- ~"' %%~LATE NUMBER - SAND, Slaty; moist, ~lne to ,..'- ld--Dragez~ medium grained brown (SM) ' Tube Readings Total Hydro~ carbons 10 SILT, Sandy; moist, non-plastic 5RS Not Detected light brown (ML) ' 15- Sg2q'D, Poorly Graded; moist, finer.RS ~ot Detected - to medium grained, tan (SP) 20 Becoming light brown ',RS -_'SILT, Sandy; moist, fine grainedLRS 25 ~ non-r~lastic, (ML) Bottom of Boring -- [ The Twining Labo 'a.to .ie$, Inc. Vlsalia Fresno Moclesto Bakersfield TLI:~ CITY of BAKL~F%ELD SF~I~T No 1 OF JOB No: TL987-049'00 LOCATION: See Site Map DRILL TYPE: Mobile B-61 DRILLED BY: R, Lawrence LOGGED BY:~. Wright ELEVATION: TOP OF HOLE: - - FT. REMARKS: R? F~r ho,th and 2 ~et east of southeast GROUNDWATER: - - corner of existing warehouse DATE: STARTED: 7/02/87 -: ................ ----COMPLETED: 7/02/87 ~' ~ ,~. ~ ~ GRADATION' 'NGINEERING ~ -- ~ PERCENT PROPERTIES-: ~ CLASSIFICATION AND DESCRIPTI'ON ~o---~~ ~ z~ --z~ ~ --~ ~x-- RETAINED TEST, TYPE AND ~ ~ ~ o o =-- ~ ~ ~%~LATE NUMBER _ SAND, Silty; moist, fine to _ medium gr~i~;-br°w~ ..... (SM) '-' Tube Readings - TotalHydro- carbons 5-- 10 SILT, Sandy; moist, non-plastic,LRS 25 - light brown (M~) ; 15 SAND, Poorly Graded; fine to LRS Not Detected medium grained, moist tan (SP) - - 20-- LRS Not Detected - - 25 1 LRS - ~1 Bottom of Boring ..................... Not Detected ~ Visalia Fresno Mo~estn eld TLlC ELD JOB No: TL987_049.00 DRILL TYPE: Mobile B-61 DRILLED 8y:__R, tawrence _LOGGED 8Y:~ REMARKS: 58 feet south and6 feet weSt of southeast ~ corner of existing warehouse CLASSIFICATION AND DESCRIPTI'ON pAND, Silty; fine to medium grained, moist, brown- (SMi No.: B-15 No. 1 0F LOCAT~0N:_ See Site Map ELEVAT I ON: TOP OF HOLE: - _ 'GRouNDWATER: ,-', DATE: STARTED: 7/02/87 COMPLETED'._..Z_7/02/87 GRADATION PERCENT INEERING TYPE AND ~LATE NUM8ER Field. Drager Tube Readings~ Total Hydro- carbons SILT, Sandy; moist, brown, micas SAND, Poorly GRaded; moist, to medium grained, tan (SP Becoming light brown SILT, Sandy, moist, non-plastic brown (ML) ~_ Bottom of Boring TL1C MAJOR DIVISIONS .. SYMBOLS TYPICAL NAMES GW Well-graded gravels or gravel-sand mixtures, little or no fines GRAVELS o~= -- GP Poorly gra~led gravel.s or gravel-sancl mixtures, little or no fines ~ ~ (More than ,,~ of coarse GM Silty gravels, gravel-sand-silt mixtures o ~ fraction > no. 4 sieve size) ~ .-.> c ~ GC Clayey gravels, gravel-sand-clay mixtures ~ SW Well-grade~ sands or gravelly sands, little or no fines . · SANDS SP Poorly graded sands or gravelly sands, little or no fines - (More than ',~ of coarse SM Silty sands, sand-silt mixtures fraction < no. 4 sieve size) SC Clayey sands, sand-clay mixtures ME Inorganic silts and very fine sands, rock flour, silty or clayey fine sands or clayey silts with ~ E SILTS & CLAYS s,ight plasticity · ~'~ "' LL'~ 50 CE Inorganic clays of Iow to medium plasticity, gravelly clays, sandy clays, silty clays, ~ lean clays <~c -~ - --.. - · · -- ..... --:-..gL Organic silts and organic silty clays of Iow plasticity .... E ~. MH Inorganic silts, micaceous or diatomaceous fine sandy or silty soils, elastic silts ~ SILTS & CLAYS LL · ~0 CH Inorganic clays (~f high plasticity, fat clays OH Organic clays of medium to high plasticity, organic silty clay. organic silts HIGHLY ORGANIC SOILS Pt Peat and other highly organic soils UNIFIED SOIL CLASSIFICATION SYSTEM COHESIVE SOILS GRANULAR SOILS Description Blows/ff. Description Blows/ff. very soft ~ 2 very loose soft 2.:/-I, loose ~- 1 0 medium(firm) ~ - 8 medium dense I 1 - :~ 0 stiff ~ - 1 5 dense 3 1 - 5 0 very stiff 1 6 - ~ 0 very dense ~ $ 0 hard ~ 30 CONSISTENCY CLASSIFICATION : z 40 I-- _O 30 u~ 20 10 4 CL 7~ ~ ~ CH CL--[~ ~ MH - - -ML & OL I I 0 10 20 30 40 50 60 70 80 90 100 LIQUID LIMIT PLASTICITY CHART CLASSIFICATION RANGE OF GRAIN SIZES Grain Type U.S. Stanclard Grain Size Sieve Size in Millimeters Boulders above 12~ above 305 Cobbles 12" to 3" 305 to 76.2 Gravel 3" to no. 4 76.2 to' 4.76 coarse (c) 3" to ~ 76.2 to 19.1 fine (f) 3A" to no. 4 19.1 to 4.76 Sand no. 4 to no. 200 4.76 to 0.074 coarse (c) no. 4 to no. 10 4.76 to 2.00 medium (m) no. 10 to no. 40 2.00 to 0.420 fine (f) no. 40 to no. 200 0.420 to 0.074 Silt & Clay below no. 200 below 0.074 GRAIN SIZE CLASSIFICATION The Twining Laboratories, Inc. CHAIN OF CUSTODY RECORD 'Affiliation of Sa-rn'Ple~/Shipper- '~-` _~[~'Ct_~ t~,~,~ b~ g~ ................ A Number St~Je Zip Telephone f' ~ ~ Signature Transported By ~. ~ ..... ~., - ;-Date Shipped ~' ~-, ~ Sample Receiver . Address Date/Time Received Comments Collector's Sample No. Chain of Pos~,~sion: · ~ Signature ' Signaturg ~/ - ~ignature Sample Description Analysis Requested tion T jffiliation 'J' Affiliation Inclusive Dates Inclusive Dates Inclusive Dates Inclusive Dates The Twining. Laboratories, Inc. - CHAIN OF CUSTODY RECORD Project No. Date/Time Sampled ~' ;Affiliation of Sampler/Shipper . . Address ~'~ ~~_ State Zip Telephone Signature Date Shipped Sample Receiver Address Date/Time Received Comments Collector's Sample No. Sample Description Analysis Requested Chain of Posses2r~n: ~___._~' .-Sig,,n~ture _'~.~/ "' /~,iliation ' ' Signaturfl f~fl' Affiliat~n ~ . -- Signature ~ ........ ~Affiliation 2 '' ~ ' ~ ~n~t~e- ~ Affiliation Inclusive Oates Inclusive Dates Inclusive Dates The Twining Laboratories, Inc. CHAIN OF CUSTODY RECORD Project No. q e'~'~ "'- C) +~( Date/Time Sampled Affiliation of Sampler/Shipper Address . Number Stre[t _ ~ City State Zip . /;~., ., -Transported. By ........ ~Z,L~ - /// ~' ,fY: /'/~. ~- ~-2 Date Shipped Telephone Sample Receiver Address Date/Time Received Comments Collector's Sample No. Sample Description Analysis Requested . . Atfiliation ,,/ A f fil~at io"~~ /Affiliation Affiliation 7- 7 Inclusive Dates clu$ive"ba~tes Inclusive Dates Inclusive Dates The Twining. Laboratories, Inc. - CHAIN OF cUSTODY RECORD Proiect No.- "~[~ ~'/ ( ' ~ Date/Time Sampled ~ Affiliation-of-sampler/Shipper Address~?X"~[ ~--~"~d,~ ,~-u--- State ZIp Number Street/.~, % Cit~ :' , ~=~J~-'~' ~' ~ Signature Collec.tor s Nam- x~,.~'//,.. _;,~./U/~/ Transported By [,"-"- '- ,; Telephone Sample Receiver Address Date/Time Received Comments Collector's Sample Description Sample No_. ~ ;sted Aft~iation -- -- I,~ncl iveOates I ' ~/d ~ -- -- 'inclusive Dates ' Affiliation The Twining Laboratories, Inc. CHAIN OF CUSTODY RECORD Date/Time Sampled ' --'T~,. _ ~,~'. .... r ,~ ,[,-~__. . Affiliation of Sampler/Shipper Address .... x '- ,"~ "~ ~ ~- '- ', -" Number Street ~ C~ State Collector's Na~ . ~ ./. / ///' " ,, ./'~/~,_~ ~ ~- -~ , -Transported By ~'~' Signature - - DateShipped Telephone Sample Receiver Address Date/Time Received Comments Collector's Sample No. Sample Description Analysis Requested ;'T~, ~-'~ ~. ?,.~ ,,~ffiliation Inclusive Dates Affilia~'ion - / Affiliation 1 Affiliation IrrClUSiVe Dates Inclusive Dates Inclusive Dates The Twining.' Laboratories, Inc. CHAIN OF CUSTODY RECORD Project No. Date/Time Sampled ~, (~ [~ ~ W f'~l~ Affiliation of Sampler/Shipper I.[~.~ r.'~._..._ ~ ~ . Number Street ~ .~ity State Colledtor's Nam~ ~ Zip Telephone Signature Sample Receiver Address Date/Time Received C, omments Collector's Sample No. ,4( Sample DeScription Analysis Requested /~, AffiJ/ation ' Incl~Jsive Dates/ Affilia/Jion ~ . Inclusive Dates ..... I Affiliation j Inclusive Dates / Affiliation Inclusive Dates The Twining Laboratories, Inc. CHAIN OF CUSTODY RECORD / , - 7 Date/Time Sampled ~_~_~ ~ , Affiliati°n(~Sampler/Shipper ..... -..~.._~.. ~.-~:'-' "~. ~ Addres~'~( ~~' ~'~ ~- ~.~ ~ C. Number Street . ~ City 8 State Zip - Telephone '-~ranspo~ed~;~ ,~'~Z~~ ..... ''-Date'Shipped '-~ l~'l~ Sample Receiver Address Date/Time Received Comments Collector's Sample No. Sample Description Analysis Requested Chain of Pos~sior~ ~ Signature~ ~ Affiliation Sign~re ..~ Affiliat~n~~ JJ "Inclusive Dates 4. .~.,. Sig~ture ' Affiliation ' inclusive Dates' Inclusive Dates The Twining. Laboratories, Inc. CHAIN OF CUSTODY RECORD Project No. ,. Date/Time Sampled ~> Affiliation 'of Sampler/Shipper Address e?'CI ~' ~,~,~:~-/ Number Street _ ~ity co,,e :or Transported By~.././.~- Sample Receiver Address "T:~=;~ - :"L~'~ - - .................... State Zip Telephone Signature .Date Shipped "T I 'z..I~:~'~' -: .... Date/Time Received Comments Collector's .,Sample No. c,~, o~ ~se~: r) ' .... 3.'~'~, ~)- ~~_~(L' SignatureI - ~;...- ' · ~ignature Sample Description t Analysis Requested ~/filiation Affiliation Affiliation Inclusive Dates Inclusive Dates Inclusive Dates / I- · The Twining Laboratories, Inc. CHAIN OF CUSTODY' RECORD Number Street , . _ ~ C -Transported. B,, ~' .~/.,~ ~,'.;/' :~' Sample Receiver State Zip Telephone Signature -- Date Shipped ~? Address Date/T/me Received Comments Collector's No. Sample Description '" mcl~sive Bates'~ ~ // . Affiliatirm /1 Inclusiv,~ Affiliation In?lusive Dates