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Home My WebLink AboutUNDERGROUND TANK OLD FIRE--_. STATION NO. ..co.o.,, ,, CITY OF BAKERSFIELD ~,~-, 4--I-~.~- ,..oo,~ '"" "*~ CALIFORNIA OFFICIAL R£COIt!D$ OF K[e. cou~"~, CAL~O~.IA ENGINEERING DEPARTMENT SOILS ENGINEERING, INC. '"' April 3, 1987 File 86-5052-A Kern County Department of Public Health Division of Environmental Health 1700 Flower Street Bakersfield, CA. 93305 Attention: Bill Scheide Subject: Preliminary Site Assessment for ...._ .... ' Underground Fuel Tanks at the .~"' ",.' .. 'old Fire Station #3 located ~'.-'.'~' · .. ' : -' .Permit #A 5-20 ' Gentlemen: -We have performed a preliminary site assessment at the subject site consisting of soil sampling and laboratory testing in accor- dance with the requirements of Kern County Health Departmen~ Hand- book UI 30. Soll samples were retrieved at two .(2.O) and six (6.0) fee~ below the bottom of the .500 gallon fuel tank. Soil samples were obtained by our representative in accordance with E.P.A. sampling procedure. Soil samples were placed in clean glass jars, stored on ice and delivered [o the laboratory for ~he testing outlined in the permiL. Resul ~s The soil samples test results show deEection of total petroleum hydrocarbons increasing wi~h depth. We recommend ~ha~ further investigation be initiated to determine Ehe vertical and hori- zontal ex~en~ of Ehe contamination. We hope Ehis ~rovides the information you require. If we can be of furEher assistance, please conEact us. ~~-. ~..~' .. ~ '.: .' ....',~ 2g01 H STR[[T · --"g~KERSFI[LD, CALIFORNIA 93301 · PHONE (805) 327-706% -'. J J EGLIN REG CHEM ENGB PETIIOLEU¥ ~ MAIN OFFICE: 4160 PIERCE ROAD, BAKERSFIELD, CA. 93308 PHONE 327-4911 Purgeab le Aromatics (SOIL) '. SOILS ENGINEERING ATTN:TONY FRANGIE Date of 2901 "H" STREET .REPORT:q-l-8? ' - BAKERSFIELD, CA. 93301 LAB No. :5369 Sample Description: PROJECT# 5058-C .. F IRESTATIOKt #3 4TH 8, L ST, @2' ' .-'' DATE DATE SAMPLE ?' DATE ANALYSIS · '-SAMPLE COLLECTED: RECEIVED @'LAB: .'COMPLETED: .i:...:~.i .... ' ....... ~ .-'- 3-85-8? . . :.-"i'."',"ii~:-" ...... ' · ..-. '.: ...... . ......... ~-I-87 '~.~.~i:.~.'.:~:'.";.?~ -"~: ,..., . . . .-'"~"'i~..~ ~-i' . . ... ....,:.. .r. :.:....Minimum ... Reporting ' ~Analysis : Reporting Const i tuent Un i ts Resu 1 ts Leve 1 Benzene ~g/g none detected 0.10 Toluene ~g/g none detected 0.10 Ethyl Benzene I~g/g none detected 0.I0 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 lig/g none detected 0.10 Petroleum Hydrocarbons Hg/g ~73.00 10.00 Total Petroleum Hydrocarbons Hg/g ~73.00 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 I' RIES ,,c.... J. J. EGLIN, lEG, CHEM. ENGll. I~TilOLELIM MAIN OFFIGE: 4100 PIERGE ROAD, BAKERSFIELD, GA, g330ff PHONE ~27-4911 Purgeable Aromatics (SOIL) SOILS ENGINEERING ATTN:TONY FRANGIE Date of 2901 "H" STREET REPORT:4-1-8? BAKERSFIELD, CA. 93301 LAB No.:5370 Sample Description: PROJECT~ 5058-C FIRESTATION #3 4TH & L ST @6' · ~..... .. .... .'. .- '.' -. ~';...~:i-i.';;'.i'..~ ~ . DATE DATE SAMPLE .DATE ANALYSIS '..'. SAMPLE COLLECTED: RECEIVED @ LAB: COMPLETED: '.-~':>'-,~',~'. - . '3-a5-87 -. · - ': '"': 3-a5-87 .'- :'. '. - · .' .' .- ' '." -.. --' ::~-1-87 ...il,i~.,~::/:';~.;;!'.: '-" .. ..; - ........---'. ~ . - .. . ...~' --. ; · · ..?.. ,. . - ::~ ~-! .:..". . "~i-Mih'imum Reporting Analysis Reporting Constituent 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 365.30 . 10.00 Total Petroleum Hydrocarbons Hg/g 365.30 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 im addition to the constituents specifically defined on this report. '. TOTAL PETROLEUM HYDROCARBONS: The sum total of all [non-chlorinated] constituents on this report. L F'ROP~KTW u~_~= ~ __ _ -- ~ cu~ D -~ .......... officiAL ~£co~s of K~RN COU~Y, CALIFORNIA ENGINEERING DEPARTMENT CH~CK~D 1556 '.. .- COLES SERVICES__ ,Crf,'077~ ~ " : ~ C~mNC¥ ST. ~ ~ ~ ' PHON~ (805J 32~7750 ' CUSTOMER ' -. ':" ADDRESS .'." ::' . PHONE: D'~ )~O~ ~~, ~~ '.' "' CONTACT PERSON: '. . . ..~' ........ O~. UNIT DESCRIPTION UNIT ' . ': '. ": .' '".' ' '. PRICE AMOUNT . .. -.- '." "-.[' ' 5~ s~ ~o .. .: . .." ...[ ':'".";" :"."""" ·-.._; .. v..-;:.' . GENERAL INFORMATION ~ ESTIMATES ONLY TANK NUMBER DESCRIPTION O '. ·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' Q 1000 Gallon steel tank - Diesel .:.:~.? Estimated Depths: Top 3.5' " Bottom 7.5'-8' ~ I000 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 500 Gallon steel tank - Waste oil Estimated Depths: Top 0.5' 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' Q 500 Gallon steel tank Estimated Depth: 5.5' Diameter 4' Q 500 Gallon steel tank .Estimated Depth: 5.5' Diameter 4' Sheet 1 of 1 S-TANKS. E Division of Environmenta~..~_.i .' 1700 Flower Street, Bakef'sfield, CA 93305 T~' t° be Aba'ndoned (805) 861-3636 APPLICATION FOR PERMIT FOR TEMPORARY OR PEI~NT CLOSURE/ABANDONMENT OF UNDERGROUND .. HAZARDOUS SUBSTANCES S~ORAGE FACILITY Type of Application (Fill Out One Application Per Facility) [] Temporary Closure/Abandonment ~f~ ~/2%~%~ eot 3z, M permanent Closure/Abandonment A. Pro~ect Contact (name, area code, phone): Days ~o~ ~z~-3o5o Nights Facility Address /3~/ ~ .~M Nearest Cross St. T R SEC (Rural Locations Only) Operator Telephone Address Zip B. Water to Facility Provided by ~ ~~ Depth to Groundwater /~ '~o/~ Basis for Soil Type and Groundwater De~th' Determinations~/~/F/~ C. Tank Removal Contr~OtOD ~CM ~ ~ C, OA ~ioeDse No. Address ~OX IOOGZ Zip R~ Telephone Proposed Starting Date {--~--~] Proposed Completion Date ~- Worker' s Compensation Certification · ~'d2v/o/~ Insurer ~/f~&~ Environmental Assessment Contractor CA License No. Address Zip Telephone Proposed Starting Date Proposed Completion Date ~orker's Compensation Certification ~ Insurer D. Chemical Composition of Materials Stored Tank ~ Chemical Stored (non-'commercial name) Dates Stored Chemical Previously Stored (if different) to to to g. Deucribe Method for Retrieving Samples ~/ ~)<~O~~/C~ k~/~ Samples Will be Analyzed for ~WZW~ ~ ~/&~. ~ ~ Laboratory That ~ill Perform Ana~ses of Samples ~/6 f [~'~/~/~/~ Address & ~ a / /~ ~ ~>CW~ Telephone ~O~) F. This Application fo~: ~ Removal or ~ Abandonment in Place · * PLEASE PROVIDE INFOR~TION REQUESTED ON REVERSE SIDE OF THIS SHEET BEFORE SUBMITTI~ APPLICATION FOR REVIEW. This fo~m has been completed under penalty of pre jury and to the best of my knowledge is and correct. Provide Description.of Physical Layout of Facility using Space Provided Below; Include All the Fo}lowing Information: Location-of Tank(s), Piping & Dispenser(s) Proposed Sampling Locations '.Indicating Approximate Depth of Samples Nearest Street or Intersection .. - - ' : "'"-' · Any Water Wells or Surface Waters Within 100' Radius of Facility NORTH · ..~ -" · · -"..:--- f -' '-,.- :" '" . .................. ' ............. :...'- ,-~_.;. ......:.-' '". ........ ~i..~ ...... "'~' :-'"''' ~.:" ~ ~,"~:'~. ' . " . .,' , 'f..~.,...-." . ~ ' · .... .-. S~nce 1897 Geotectlnical and Environmental. Consultants · Engineering and Chemrcal Laboratories DATE JOB NO. 5-22-87 987-45-0 ATTENTION: ' ~4r. Ri 1 1 Sch~.id~ TO KERN COUNTY DEPARTMENT OF HEALTH RE= City of RakP_rsfiP]d RNVT~NMV. NTAT, RW. AT,TR Sw. RVTCV.$ Fi restatlon at 4th and T, Streets WE ARE SENDING YOU ~Attached [] Underseparatecovervia Rand DP1 i vPry the following items: [] Drawings [] Specifications [] Plans G Samples [] Cp'py of letter [] Invoices ~ Proposal [] Brochures [] Copy of Report ~.. COPIES DATE NO. DESCRIPTION -- 1 Site Characterization Proposal "~ Citv of Bakersfield Firesta~on at' · 4th and L Streets '".:' THE~E ARE TRANSMITTED as checked below: i [] For approval [] Appro~ ~)mit copies for approval [] For your use [] Approved as noted [] Submit__copies for distribution [] As requested [] Returned for corrections []' For Signature ::~ For review and comment [] -- REMARKS COPYTO City of Rake~sf~e]~-R~ck ~mhros~ ~ ~ (transmittal only) SIGNEQ' ~ ~ If enclosures are not as noted, kindly notify us at once. . ~ 2527 Fresno Street Fresno, CA 93721 (209) 268-7021 I~ 9401 W. Goshen Avenue Visalia, CA 93277 (209) 651-2190 ',[] 1405 Granite Lane. Suite 1 Modesto, CA 95351 (209) 523-0994 ~1 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 bf 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 Mo~esto Visatia 8aKersT~elct City of Bksfld. Public Works TABLE OF CONTENTS Page INTRODUCTION ........................................... 1. BACKGROUND 3 Site Description ................................. 3 Previous Investigations .......................... 4 Nature of the Problem ............................ 4 OBJECTIVES OF INVESTIGATION ............................ 4 TECHNICAL APPROACH ..................................... 6 Assessment ....................................... 6 Sampling Methods ................................. 6 Decontamination Procedures ....................... 7 Sample Shipment & Chain-of-Custody Procedures .... 7 Work Safety Plan ................................. 7 Laboratory Investigation ......................... 8 Technical Report ................................. 8 M~NAGEMENT SECTION ..................................... 9 LIMITATIONS ' 9 CLOSING ................................................ 10 Fresno Moaes~o Visa.a 8a~(ersheJci 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 Moc:esto Visaha Bakershe/d Since 1898 iGeotechnical and Environmental Consultants · ' Engineering and C'hemical Laboratories PROPOSAL FOR PRELIMINARY ENGINEERING INVESTIGATION. UNDERGROUND FUEL STORAGE TANKS BAKERSFIELD, CALIFORNIA ! INTRODUCTION l.. 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· underground storage tanks located at the above locations i 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 engineering, 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 Bakersfield, Modesto, and Visalia, and from our corgorate headcuarters rm 2527 Fresno Street · P.O. Box 1472 ~ 9401 West Gosl~en Avenue Fresno, California 93716 · (209) 268-7021 Visalia, Califorma 93291 · '(209) 651,2190 'Z 1405 Granite Lane. Suite 1 ~ 5301 Olfice Parr Dr~ve. Suite 310 Mocesto. Ca.forma 95351 · (209) 523-0994 BaKersfield. Ca~dorma 93309 '~805'~ .322-52t6 City of Bksfld. Pu Works _ May 11, 1987 · ...- ' Page 2 located in Fresno, California. Although these offices operate independently, the,.; are able to draw upon the resources of the overall firm for personnel, specialty services, and unique technical capab ilit ie s. Our overall staff of over 60 professional and technical personnel represent registered and graduate civil engineers, geologists, chemists, construction inspectors, and laboratory technicians, who are well qualified and have the time available to undertake this project. " The Twining Laboratories is' dertified 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 requ.irements 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. City of Bksfld. .c Works May 11, 1987 Page 3 BACKGROUND: The following sections contain a description of existing site features, previous investigations, and the nature of the problem. Site Descriptions: The old city corporation yard is located on "S" Street 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 generall'y 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 presente.d 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 investigation 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 map presented on Drawing No. 3. Fresno Moclesto Visal~a Bakersfield SCALE: DATE: EN~INEERZN~ INVESTIGAT!)N NTS The Twining CITY OF BAKERSFIELD DRAWN ,qY: APPROVED BY: Laboratories, Inc. DRAWING No. ~ Of FRESNO/uOCESTO /'IISALIA /8AKEgSFIELD PARKING SHED A/C PAVED -- ' YARD AREA WAREHOUSE / A~PPROXI~TE .. SOIL BORING LOCATION _~_ ~ D~ESZ~ ~ORT~ ~ TANKS WASTE OIL Tg2',IK DISPENSER sc~: NTS ~: The Twining OLD CORPO~TION YA~ SA~Ss~SmD,' C~ISO~N~A. ~ ~: ~o~ ~: ~bcrG~or[es, ~nc. D~A~NG No. -APPROXIMATE SOIL 'BORING LOCATION NORTH I IDIESEL TANK FIRE. STATION BUILDING I "L" STREET I SCALE: DATE: OLD FIRE STATION NO. 3 NTS The Twining BAKERSFIELD, CALIFORNIA DR,~WN nY:A~:~:ROVED.y: laboratories, Inc. City of Bksfld. Pub~ .c Works May 11, 1987 · ' 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' Investiaations: 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 ~r. Bill Scheide of the Kern Coanty 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: 1. Determine the existence and concentration of selected constituents in the soils in the area of the' under- ground storage tanks. City of Bksfld. Public Works May 11, 1987 ~. Page 5 2. 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 the area of the underground storage tanks. 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 migration and concentrations in the soil. 3. 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 investi,gation, which is deemed necessary to achieve the above-referenced objectives, is as follows: 1. Using a drilling rig, drill down to a maximum depth of 25 feet below the surface. 2. 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. 3. Analyze selected soil samples in the laboratory for the presence and concentration of selected constituents. 4. Evaluate the data produced during the investigation to determine, if possible, the general extent of the con- stituent migration in the soil. Fresno Modesto Vtsal~a BaKersheld City of Bksfld. Works May 11, 1987 .o 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 would be drilled to a maximum depth of 25 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. SamDlina ~.ethods: The borings will be advanced using either a B-40 or B-61 drill rig equipped with 8 inch diameter hollo%$ 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 hydrocartlons or when a depth Fresne Modeste Visalia Bakersfield City of Bksfld. Public Works May 11, 1987 · . 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. All 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 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 ShiDment 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. All 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. All 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, U.S. EPA, will be followed. Work Safety Plan: Due to health hazards associated with exposure Fresno Moclesto VlSaha 8akersneld ~City of Bksfld. ~ic Works May 11, 1987 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 Laboratorv I'nvestiaation: Each soil sampl~ 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 with appropriate EPA methods. The detection limit .for each constituent will be indicated in the final report. Technical Report: 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 tests; the findings obtained; and related conclusions and recommendations. Our professional services will be performed and our findings obtained in accordanc-e With generally-accepted engineering principles and practices. City of Bksfld. Public Works May 11, 1987 -' Page 9 MA~AGEMENT SECTION An engineer would be assigned to this'project to assure you of a 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 Fresno Office would be the project manager. Theodore D. Wright, RCE, Engineering Manager of our Bakersfield Office, would be the project engineer. John Bricarello 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 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. 'City of Bksfld. Put Works May 11, 1987 .- 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: herewith lc: B City of Bksfld Public Works A-1 APPENDIX A WORK SAFETY PLAN This appendix contains our Work safety Plan for this project. The... .Work Safety Plan was developed to protect the employees o'f Twining Laboratories, Inc. involved in this project and to develop all necessary safety information prior to the implementation of the field and laboratory investigation. Work Safety Plan A-2 ~INING LABORATORIES, INC. WORK SAFETY PLAN A. GENERAL INFORMATION PROPERTY OWNER: City of Bakersfield LOCATION: Bakersfield, California PLAN PREPARED BY: Theodore D. Wright DATE: 5-11-87 OBJECTIVE(S): Contamination Assessment PROPOSED DATE OF ACTIVITY: May 1987 BACKGROUND DOCUMENTATION: Previous investigations indicate that various locations could be contaminated with diesel range petroleum hydrocarbons. B. SITE/WASTE CHARACTERISTICS WASTE TYPE: Liquid Solid X Sludge Gas CHARACTERISTIC(S): Corrosive Ignitable Radioactive Volatile X Toxic Reactive Unknown Other (Name) FACILITY DESCRIPTION: Old Corporation Yard, Old Fire Station No. 3 Unusual Features: (dike integrity, power lines, terrian, etc.): Powerlines overhead at Fire Station Status: (Active, Inactive, Unknown): Inactive History: (Worker or non-worker injury; complaints from public; previous agency action): None noted Work Safety Plan A-3 C. HAZARDOUS EVALUATION. TOXICITY: Low EXPOSURE POTENTIAL: 1) Open-air ventilation 2) Soil disturbance during drilling 3. Contact during sample handling HAZARD SUMMARY: Low D. SITE SAFETY WORK PLAN PERIMETER ESTABLISHMENT:. Map/Sketch Attached Yes Site secured? Yes Perimeter identified: Yes Zone(s) of contamination Identified? No PERSONAL pROTECTION: Level of Protection: A B C X D Modifications: Level "C" utilized in areas where contamination suspected. Equipment, Materials, and Procedures: 1) Disposal coveralls 2) Neoprene gloves 3) Rubber boots Fresno Mo(3e5to V~$al~a Bakersfield Work Safety Plan- A-4 DECONTAMINATION PROCEDURES: Decon procedures sampling and drilling for' 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 Responsibiltv Gary W. Kiger Project Manager Theodore D. Wright Sampler/Engineer John Bricarello Chemistry Dept. Manage~ WORK LIMITATIONS (Time of delay, etc.): Limited to daylight hours I~ESTIGATION-DERIVED MATERIAL DISPOSAL: Ail materials will be stored on-site pending soil analyses. Fresno Moaesto Vlsaiia BaKersneJd Work Safety Plan A-5 , E. EMERGENCY INFORMATION LOCAL RESOURCES Ambulance: 911 Hospital EmergencY: Greater Bakersfield Memorial Hospital (805) 327-1792 ' Police: 911 Fire Department: 911 Airport: 393-7990 Explosive'Units: N/A SITE RESOURCES Water Supply: Facility Supply Telephone: N/A Radio: Two-Way Radio in Twining Support Vehicle Other: N/A EMERGENCY CONTACT 1. Harry D. Moore ......... (209) 268-7021 or 435-9569 (home) 2. Gordon Parrish ......... (209) 268-7021 or 292-7076 (home) Fresno Modes~o Visal~a Bakerst~e~cl TL. 987-~45-00 TABLE OF CONTENTS PAGE 1 · 0 INTRODUCTION ......................................... .. · · 1 2.0 BACKGROUND INFORMATION ................................ 2 2.1 Site Description ................................. 2 2.1 Project History .................................. 2 3.0 PURPOSE AND SCOPE OF INVESTIGATION .................... 4 4.0 SAMPLING AND TESTING PROCEDURES ............... : ....... 5 5.0 RESULTS AND FINDINGS .................................. 7 5.1 Soil Profile ..................................... 7 5.2 Groundwater Conditions ........................... 7 5.3' Results of Chemical Analysis ..................... 7 6.. 0 EVALUATION ............................................ 8 7.0 CONCLUSIONS .......................................... ~ 10 8.0 RECOMMENDATIONS ....................................... 11 9.0 LIMITATIONS ........................................... 13 LIST OF APPENDICES: APPENDIX A - Logs of Borings ............................... A-1 APPENDIX B - Chain-of-Custody Documentation ................ B-1 Fresno Modesto Visaha Bakersfield LIST OF TABLES Table I - 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 Visal~a Ba)<erstield -' Since 1898 'Geotechnical and Environmental Consultants · Engineering and Chemical Laboratories GEOTECHNICAL ENGINEERING INVESTIGATION i' SOIL CONTAMINATION ASSESSMENT i FUEL STORAGE TANKS CITY OF BAKERSFIELD OLD FIRE STATION NO. 3 BAKERSFIELD , CALIFORNIA : [. 1.0 INTRODUCTION This report presents the results of a contamination investigation of the soils beneath the area where an underground storage tank was located at the City of Bakersfield's Old Fire Station No.. 3 in Bakersfield, California. The sc. ope 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 and a copy of the chain-of-custody documentation. The investigation was performed during Ju-ly 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 ~ 9401 West Goshen Avenue Fresno, California 93716 · (209) 268-7021 Visaiia, California 93291 - (209) 651-2190 14(~5 Granite Lane, Suite 1 i 5301 Office Park Drive, Suite 310 Moclesto, California 95351 · (209) 523-0994 Bakersfield, California 93309 .(805) 322-5216 TL 987-045-00 Page 2 2.0 BACKGROUND The following section presents background information with regard to the description of the site and the project history. 2.1 Site Description: The Fire Station No. 3 'facility· is located at 1301 4th Street in Bakersfield, California. Drawing N°. 1 is a vicinity map showing the approximate location of the project site. The project site is located at the southwest corner of 4th 'and "L" Streets. The site is rectangular in shape and about 0.5 acres in size. The site is bound by a residential dwelling to the west, an alley to the south, "L" Street to the east, and 4th Street to the north. A site plan is presented on Drawing No. 2 which shows the major features of the site. 2.2 Project History: On March 25, 1987, one 500 gallon single-walled underground storage tank was removed from the project site. The approximate location of the tank is presented on Drawing No. 2. .According to City of Bakersfield personnel, the 500 gallon tank had been used for diesil fuel storage. The tank removal and disposal operations were performed by Remaco, Inc. of Bakerfield, California. After the underground storage tank was removed' from the ground, soil samples were collected by Soils' Engfneering, Inc. at depths of about 2 feet and 6 feet below the bottom of the tank. According tO Mr. Pat Mullhofer of RemacQ, Inc., no holes were noted in the tank when it was removed. On April 3, 1987, the test results of the soil samples collected IPROJECT No. : 987-045-00 i. VICINITY MAP OLD ~IRE STATION NO. 3 SCALE- NTS D~iTc~/i/S7 The Twining B~ERSFIELD, C~IFO~IA DRAWN BY: APPROVED BY: .' Laboratories, Inc. D RAWI~G No. i of 3 FRES~./~OESTO /vIsALIA/~AKERSFIELO 987-045-00 AND APPROXIMATE LOCATION C.M.U. WALL FIRE STATION BUILDING "L" STREET SCALE DATE OLD FIRE STATION NO. 3 NWgzo/~/87 The--''lwlnlng BAKERSFIELD, CALIFORNIA DRAWN B~, A,,ROVEO "¥: __ _ ./ohorofories,.__Inn. DRAWING No. 2 Of 3 FI~ESNO./MOOESTO /VISALIA/BAKERSFIELD TL 987-045-00 Page 3 at the site were reported to Mr. Bi.ll Scheide ~of the Kern County Health Department. The test results indicated the presence of Total Hydrocarbons (273.00 and 365.30. mg/kg).. In a letter dated April 9, 1987, Mr. Scheide 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 tank 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. Scheide 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 four test borings would be drilled in the area suspected to have soil contamination. The investigation would consist of the collection of representative 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 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 F~esno Modes~o Visati~ Bakersfield TL 987-045-00 ~. Page 4 Health Department requested that Total Petroleum Hydrocarbon testing for No. 2 Diesel be in accordance with the State of California l~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 investigation was to determine the general. horizontal and vertical extent of'diesel contamination in the area where the underground storage tank had been located-at the project site. A summary of the actions taken during our investigation is outlined as follows: 1. 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. 2. A telephone conversation was held between Mr. Bill Scheide of KCHD and Mr. Theodore Wright of Twining Labor. atories, to discuss the concerns of the KCHD regarding the project. 3. A work plan was developed and submitted to KCHD for review and subsequently accepted. 4. A site reconnaissance and field investigation were conducted. Fresno Moclesto Visalia Bakershel~ TL 987-045-00 Page 5 5. Laboratory tests were conducted on soil samples obtained from the project site. 6. The data obtained from our field and laboratory investigations were evaluate'd to develop con- clusions and recommendations with regard to the extent of diesel contaminated soils at the site. 4.0 SAMPLING AND TESTING PROCEDURES On July 22, 1987, four 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 location identified by a survey marker installed by the City of Bakersfield. 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 intervals of 5 feet beginning at depths ranging from 5 feet t'o 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. The test borings were terminated at depths ranging from 24 to 25 feet. 'After the soil samples were obtained, the exploratory borings were backfilled with a bentonite grout. The soil simples obtained from the site were retained in brass tubes. The ends of each brass tube were covered with aluminum foil and plastic end caps, .sealed with electrical tape, and immediately Fresno Mo~iesto Visatia Bakersfield TL 987-045-00 Page 6 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 22, 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: Constituent Test Methods Benzene, Toluene, Xylenes SW-846:· Methods 5020, 8020 Total Petroleum Hydrocarbons SW-846: Methods 5020, 8020 SW-846: Test Methods for Evaluating Solid Waste, Physical/ Chemical Methods, 2nd Edition, U.S. EPA, 1982. Fresno Modesto Visalia Bakersfield TL 987-045-00 Page 7 5.0 RESULTS AND FINDINGS 5.1 Soil Profile: The soil profil'e at the project site generally consists of 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 25.0 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 (July 22, 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 the depth to groundwater in the vicinity of the Fire Station No. 3 site. 5.3 Results of Chemical Analysis: Table No. I presents the z analytical results of the laboratory analysis of the soil samples obtained during this investigation. Fresno Modesto Visalia Bakersfield PROJECT PROJECT SITE ~ · ' DE~TH TO GRO~D~ATER (From Kern County Water Agency Water Supply Report - 1986) ORAWI NG No. 3 a~ 3 FRESNOIMODESTO~ VISALIA tBAKERSFIELD~ TL 987-045-00 Page 8 Table I - Soil Sample Laboratory Analysis Iso-prop Depth, Benzene Toulene Xylenes Benzene TVoH - Date Boring Feet mg/kg mg/kg mg/kg mg/kg mg/kg Analyzed B-1 '10 ND ND ND ND 6.2 07-24-87 B-1 '. 15 ND ND ND ND ND 07-24-87 B-1 20 ND ND ND ND ND 08-06-87 B-2 10 ND ND ND ND 2.3 07-24-87 B-2 15 ND ND ND' ND ND 08-06-87 B-2 20 ND ND ND ND ND - 07-23-87 B-3 05 ND 0.06 ND ND ND 07-24-87 B-3 10 ND ND ND ND ND 07-24'-87 B-4 05 0.19 ND ND ND ND 08-06-87 B-4 10 ND ND ND ND ND 07-23-87 B-4 15 ND ND ND ND ND 07-24-87 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 the underground storage tank was located at the project site. As previously discussed, the test results of the soil samples obtained during tank removal operations revealed the presence of Total Hydrocarbons. The soil samples were taken from the bottom of the tank excavation, near the center of the tank, at depths ranging from about 8 to 12 feet below site grade. During this investigation, one boring was advanced in the area where the center of the tank was located, and the remaining borings were advanced around the perimeter of the tank excavation. Due to the presence of a concrete masonry unit wall, low sewer lines in the area overhead powerlines, and underground water 'and Fresno Modestc Visalia Bakersfield TL 987-045-00 Page 9 directly south of the tank excavation, a boring was not advanced in this area. The results of the soil samples selected for analysis obtained from these test borings revealed non-detectable concentrations of Xylenes and low concentrations of Benzene, Toulene and Total Hydrocarbons. The tank excavation remained open for a period of about 3 months prior to our field investigation. During this time period,· the surface soils in the excavation had an opportunity to aerate. This could partially explain the low concentrations 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 our test borings which revealed relatively low concentrations of Total Hydrocarbons, the depth of attenuation for the constituents at about 10 feet, and the approximately 150 feet of separation between groundwater and the soil containing detectable cOncentrations of Total Hydrocarbons, it is our opinion tha, t 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 or concrete pavement section should be placed on top of the backfilled excavation to rapidly drain Fresno Modesto Visalia 8a~(ersfield TL 987-045-00 Page 10 surface runoff away fro~ the backfilled area. 7.0 CONCLUSIONS 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 - sandy silts and poorly graded sands to the depths explored 7.2 Based on data obtained from the Kern County Water Agency Water Suppy Report of 1986, groundwater is located at a depth of about 175 feet below site grade. 7.3 Based on the four exploratory test borings placed in the area of the 500 gallon diesel storage tank, diesel contaminated soils appear to attenuate at a depth of about. 10 feet below site grade. Fresno Moctesto Visal~a BaKersfield TL 987-045-00 Page 11 8 . 0 RECOMMENDATIONS The following recommendations are submitted for your consideration: 8.1 The loose material in the excavation should be ,. entirely removed and recompacted as engineered fill. 8.2 The on-site soils which are free of organics and debris'are predominatly sandy· silts and poorly graded sands. These soils will be suitable for use a~ 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 100 Percent Passing.No. 4 Sieve 50 - 100 Percent Passing No. 200 Sieve 0 - 30 Plasticity Index Less'than 10 R-value 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 Visal~a Bakersfield TL 987-045-00 Page 12 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. '. i' 8.4 'The backfilled excavation should be capped with ! l_~ asphaltic or Portland Cement concrete pavement to rapidly drain surface runoff away from the back- filled area. The pavement should be designed to support the anticipated traffic conditions. Fresno Modesto Visalia BaKersfield TL 987-045-00 Page 13 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 Modesto Visalia Bakersfield TL 987'045-00 Page 14 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 ~33710 (exp. 6'30-'90) Engineering Manager Bakersfield Office TDW/km 3c: herewith B F Fresno Modesto Visal~a BaKersfield TL 987-045-00 Page 15 APPENDIX A Fresno Modesto Visat~a Bakersfield TL 987-049-00 A-1 APPENDIX A LOG OF BORINGS This appendix contains the final logs of borings. T.hese logs represent our interpretation of the co,tents 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 Visaha Bakersfield TL 987-049-00 A-2 LOGS OF EXPLORATIONS EXPLANATION OF ABBREVIATIONS LRS - Split barrel ring sampler, 2.5-inch I.D., for- '- taking undisturbed samples. Fresno Moclesto Visalia Bakersfield PRO~ECT: C)T,T~ I~TRF. ,qTATT~NO. ]3 HOJ~No.: B-1 BAKERSFIELD, C~%FORNIA SHE~PT No. 1 OF 1 JOB No: 987-045-00 LOCATION: 7 feet West of Center " DRILL TYPE: B-40. of Tank DR 1LLED BY: q'. Rnnl Pv LOGGED BY: T.Wr~ ~ht ELEVAT I ON: TOP OF HOLE: _ _ !~ .... .." REMARKS: GROUNDWATER: 7-22'87- - DATE: STARTED: COMPLETED: 7-22-87 ~ = z ~ -- ~ PERCENT PROPERTIES l.'-- ~ ,,,~z~. mw ~=~ ~: --<~' ~-RETAINED~xx~v TEST, TYPE AND n CLASSIFICATION AND DESCRIPTI'ON ~o~m - z - ~ ~x e.:: ~ o o = -- ~ "' .~.~PLATE NUMBER [" ~ ~ ~ 0x0 ~ ~ -- ~-- [" _ SAND, Poorly Graded; moist, fine to medium grained, gray - (sP) 5 -- LRS -- -- 10 -- LRS - With fine gravels - _ 15 Becoming tan LRS -- - - 20 -- LRS 25 LRS Bottom of Boring The Twining L bo 'ato 'ie$, Inc. Vlsal~a Fresno Mo~es~o Ba~ersfiel~ TL~O~' PROJECT: ~T.~ ~TR~ STATT~ii, NO. 3 ' HOI No.: B-2 BAKERSFIELD, C~FORNIA S No. 1 OF 1 JOB No: 987-045-00 LOCAT~0N: DRILL TYPE: B-40 DRILLED BY: t_ Cnnl~y LOGGED BY:T.Wr~ht ELEVATION: TOP OF HOLE: · _ _ FT. REMARKS: GROUNDWATER: - - DATE: STARTED: 7-22-87 COMPLETED: 7-22-87 · · ~ = = ~ -- ~ PERCENT PROPERTIES: ~J =~ ~ ~ ~ -- RETAINED TEST, TYPE AND~ ~ CLASSIFICATION AND DESCRIPTI'ON _SA~D, ~oorly ~a~e~; moist, ~i~e to medium graiDe~, gray - (S?) ~RS 15~ Becoming ligth brown LRS 20-- iRS 24.0 Gravels t;o 2" maximum. LRS Auger Refusal- Bottom of -- Boring The Twining L=bo ,=toPie$, Inc. Vlsalia Fresno Mo(:lesto Bakersfielcl TL1 PROJECT: C~l'.n FTR~ ,~TAT~NO. 3 HOJ~No.: BAKERSFIELD, C~FORNIA SH~F~ No. 1 OF 1 308 No: 987-045-00 LOCATION: 10 feet East of Center DR~LL TYPE: B-40 . of Tank DRILLED BY: t. Cn~l~y LOGGED BY:T.Wri~ht ELEVATION: TOP OF HOLE: _._ FT.. REMARKS: GROUNDWATER': - - DATE: STARTED: 7-22-87 COMPLETED: 7-22-87 "' ~- . >' GRADATION ENGINEERING : ~ -- ~ PERCENT PROPERTIES: ~ ,,,-~ =~ m ~ ~ -- RETAINED TEST, TYPE AND! ~ CLASSIFICATION AND DESCRIPTION PLATE NUMBER _ SILT, Sandy; moist, non-plastic~ dark gray (ML) 5 LRS SAND, Poorly Graded; moist, - fine to medium grained, gray _ (SP) 10 LRS SILT, Sandy; moist, non-plastic - dark gray (ML) '1.5-- LR~ SAND, Poorly Graded; moist, - fine to medium grained, light brown (SP) 20-- LRS 24.0 LRS '1 -- Bottom of. Boring The Twining Laboratories, Inc. Vlsalia Fresno Mo~esto Bal~ersfielc~ TL1 LOG OF BORING PROJECT: nT,l~ FTRF. 3 HO~_ o.: B-4 BAKERSFIELD, CA~IFO~T.A SHEET No. 1 OF i JOB No: 987-045-00'" LOCATION: 10 feet North of' Center DRILL TYPE: B-40 of Tank ! DRILLED BY: T. Cnnl~y LOGGED BY: T.Wri~ht ELEVATION: TOP OF HOLE: _ _ F-r. I REMARKS: GROUNDWATER: - - DATE: STARTED: 7-22-87 COMPLETED: 7-22-87 "'~;>'~' >' GRADATION ENGINEERING. . ~ ~ z -~ --~- PERCENT ~ROPERTIES: ~ ,,,4 z'~ ~ ~- ~ ~ -- RETAINED TEST, TYPE AND ~ CLASSIFICATION AND DESCRIPTI'ON -~o---~ -- ~' ~ -- ~- ~ x tu a.~ ~ oo =-- ~"' PLATE NUMBER _SILT, Sandy; moist, non-plastic. dark brown (MLy 5-- SAND, Poorly Graded; moist., LRS - fine grained, gray (SP) 10--- LRS i 15 -- Becoming tan LRS ' 20~ LRS 2~o0 LRS ~ Bottom of Boring The Twining Laboratories, Inc. Vlsalia Fresno Modesto Bakersfield ' TLI06 ~ MAJOR QIVIS~ONS 8OLS ICAL NAMES ~ GW Well-graded gravels or gravel-sand mixtures, little or no fines .--_ ~ GP . Poorly gracled gravels or gravel-sand mixtures, little or no fines ~ a (More titan ',~ ot coarse GM Silty gravels, gravel-sand-silt mixtures ~ o ~ tract~on>no. 4 sieve size) ['" ~ c ~ GC Clayey gravels, gravel-sand-clay mixtures SW I Well-gracied sands or gravelly sands, little or no fines ~ ~ ~ SP I Poorly graded sands or gravelly sands, little or no fines <( ~ ~, (More tl~an '/~ of coarse 0 SM Silty sands, sane-silt mixtures (3 fraction < no. 4 sieve s~ze)* SC i Clayey sands, sand-clay m~xtures ," ML [ inorganic s,lts and very fine sands, rock flour, s,lty or clayey fine sani=sor clayey silts witl~ ~ t slight plasticity . ~ ~ ~ SILTS & CLAYS CL I Inorganic clays of Iow to medium plasticity, gravelly clays, sandy clays, silty clays, ~ ~' ,LL ~ 50 t lean clays Z c '~ O.L I Organic silts and organic silty clays of Iow plasticity MH ~ I Inorganic silts, micaceous or diatomaceous fine sandy or silty soils. elastic silts ~: :~ ~ SILTS & CLAYS CH t Inorganic clays ~t I~ign plasticity, fat clays V LL 50 ~ .... OH I Organic clays of medium to nigh plasticity, organic silty clay. organic silts HIGHLY ORGANIC SOLES Pt I Peat and other I~ignly organic so~ls UNIFIED SOIL CLASSIFiCATiON SYSTEM COHESIVE SOILS GRANULAR SOILS CLASSIFICATION j RANGE OF GRAIN SIZES · I U.S. Stanclarcl Grain Size Description Blows/lt. Description Blows/ft. Grain Type ~ Sieve Size in Millimeters very sot~ ~ ~. 'very loose ~ ~ Boulders I above 12' al=ova 305 sort Z - L~ ~oose 5- 1 0 CODDles j 12" to 3" 305 to 76.2 meQium(lirm) 5 - ~ medium dense 1 1 - ] 0 Gravel 3' to no. 4 76.2 to 4.76 stiff ~} - I ~ dense ~ I - ~ 0 coarse (c) 3" to ¥, 76.2 to 19.1 · fine (f) ¥,' to no. 4 19.1 to 4.76 very stiff 1 ~- ~0 very dense ~ ~0 Sand no. 4 to no. 21~ 4.78 to 0.074 hard ~ ] 0 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 CONSISTENCY CLASSIFICATION silt & Clay below no. 200 below 0.074 GRAIN SIZE CLASSIFICATION z. ~o ~' 30 h- ' 7 GL Mt.. & OL ~ 4 I ! , LIQUId LIMIT ~. . PLASTICITY CHART The Twining Laboratories, Inc. -' CHAIN OF CUSTODY RECORD Affiliation of SamplerlShipper "-"~ ~-,~,-~ Number Street ~ . City ~_ State Zip Telephone Transported By ~ Date Shipped ~- ~ Z -~ Receiver Address , Date/Time Received Comments Collector's Sample No. Sample DescriptiOn Analysis Requested The Twining Laboratories, Inc. .' CHAIN OF CUSTODY RECORD i' Project No. ~, Affiliation of Sampler/Shipper '"~u,.b ~"~ Number Street /~ Citv State Zip Telephone Collector's Name~ "~'~ '~- " ' ~ Date Shipped 7/~/~> ' Transported By Sample Receiver Address Date/Time Received Comments Collector's Sample No. Sample Description Analysis Requested Chain of Possassion: ~ ~ ~ . S~nat~e ~ · Affilia~on( I clusiv Sigr~ure ~[~ - Affilia~o~ ~ ~ Inclusive Dates ~ Signature Affiliation Inclusive Dates The Twining Laboratories, Inc. CHAIN OF CUSTODY RECORD !". Project No. "~ ~~~ ~'~' ' Date/Time Sampled Affiliation;Sampler/Ship?er Address '~1 ~ '~ ~ ~ ~~/~ ~.. Co,lector'sNa~ ~~ ~- ~% ~ Signature Sample Receiver Address Date/Time Received Comments Collector's Sample No. Sample Description Analysis Requested ~ Sig./~ ure, .2, ~.,,~,,..,z ~j' Affiliation Inclusive Dates . A;;,o~ .~ ' Inclusive Dates Affiliation / inclusive Dates Affiliation Inclusive Dates GEOTECHNICAL ENGINEERING INVESTIGATION t .... SOIL CONTAMINATION ASSESSMENT ~ FUEL STORAGE TANKS CITY OF BAKERSFIELD OLD FIRE STATION NO. 3 BAKERSFIELD, CALIFORNIA Presented to: City of Bakersfield Department of Public Works 1501 Truxtun Avenue Bakersfield, California 93301 Fresno Modesto Visaha ' Bakersfield FILE CONTENTS SUMMARY Activity Date # Of Tanks Comments ~p~.~,~ '/~t~1¢~ .... / .'o~~ 1700 Flower Street AiR POLLUTION CONTROL DISTRICT LEON M HEBERTSON, M.D. 8akers[ietd, California 93305-4198 ' ' Director of Public Health Telephone (805) 861-3621 ' ' Air Pollution Control Officer January 18, 1988 City of Bakersfield f. Department of Public Works ..' :',: · ...-. 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 is finished. Sincerely, Bill Scheide EHS I BS:dr cc: Twining Laboratories, Inc. 5301 Office Park Dr., Suite 310 Bakersfield, GA 93309 TM~I" 17~ Flower Street KERN COUNTY HEALTH DEPAR HEAL~ OFFICER Ba~mfield, Call~rnia 93305 ~on M Hebe~, M.D. ~lephone (~5) 861-3636 ,. ENVlRONMEN~L HEAL~ DIVISION DIRECTOR OF EN~RONMENTAL HEAL~ ~rnon ~ Relcha~ April 9, I987 City of Bakersfield ... Attn: Gary Roush 1501Truxtun Avenue ..'. .. ~'-, · RE: Tank Abandonment - Fire Station #3 ...'.!'"'.-!'::..:'." Dear Mr. Roush: This department has revle~ed the laboratory analyses for the underground storage tank abandoned under permit #A355-20 at 1301 4th Street, Bakersfield. The analyses for this tank Indicated significant levels of Total Petroleum Hydrocarbon contamination. This discovery requires a site characterization to find the full extent of contamination surrounding this tank and its piping. You have 30 days from the date of this letter to submit a site characterization proposal to this department. Please refer to pages 8, 9, and 10 of handbook #UT-30, "Requirements for Permanent Closure of Underground Hazardous Substance Storage Tanks" for guidance in developing a site characterization study. The proposal (~orkplan) must be approved by this department prior to beginning the ~ork. Please note that once you determine the full extent of contamination and the threat to groundwater, you must develop a m/t/gat/on proposal to correct this problem. 'If you' have any questions, please call me at (.805) 861-3636. Sincerely, Bill Schetde Environmental Health Specialist Hazardous Materials Management Program BS:sw Enclosure cc: Remaco, Inc. DISTRICT OFFICES Delano . Lamont , Lake Isabella Mojave Rldgecrest . Shatter . ~ft , 170OFIower Street ~' RN COUNTY HEALTH R . "':="~'~"~""='~' ': I~ake~fleld, California 93305 :'" /' ...... '" ~, M.D. ~., ':,..Telephone {805)861-3636 .... ;,i,i..'~ :::~::~ .~,'?.*'..-..:.~.<;~:..,::' ENVIRONMENTAL'HEALTH DIVISION ...~.. " -*' '.:~"-",~' *?.* ..... . ..... .. :,' '- · ......- .' "~' "' ;:": '~ :, ': '~, ~" :' DIREC"I'OROF ENVIRONMENT~r/. HEALTH' ~.-.;::::'~,~?,:.':~:Li~'~-9,~.*:..:::'.7%,.~ .'~.j ~:.::::~.,~? ?. * i.~ ~.:..~?.:,.'~*..'::'~{~ =~' *'" :::* **~':' ? , Relchard i~.jUNDERGROUND HAZARDOUS SUBSTANCES '-BAKERSFIELD FIRE.DEPT.i #3'{OLD)"~ -OF iBAKERSPIELD (.~4TH'STREET :~,~...:..:'~ :~ .~.,. ,~ :'.,.~.,. . :~:%j'...~'~. IN=YRS ZED Kern County Ilealth Det~rtmene~.~- Permit ~i-_~-~d3 (~ O O.~'~ Division o~ Envlro~ental Heal' J ''. A~lication~'....~ 1700 Flo~r Street, Bakersfield, ~ 93305 -' ~PLI~TION ~R PE~XT ~ OPE~TE ~E~R~D ~~US SUBST~CES S~E FACXLI~ T~ o~ Applfcation (ch~k): ~New Facility ~lficatlon of Facility ~lsti~ Facllit~ ~ansfer of ~ of B~iness (check): ~l~ne S~tion ~er (de~ri~) ~,~d ~dF~ Is Tank(s) ~cat~ on ~ ~ricultural Fa~? ~Y~ Is Tank(s) Us~ Primarily for ~ricultural ~r~ses? ~Yes ~ -' T .~ R SEC (R~al ~atio~ ~ly) " ~ll ~aracteristics at Facility :' C. Contractor ~ ~nt~actof~s ~co~a ~. ~dre~ Zip Tele~ ~rker's C~~ti~ CertA[lcat~oa t Insurer Tank I ~s~ Pr~uct ~tor Vehicle Unleaded R~ular Pr~i~ Die~l '~ste F. Chml~l ~s%'tion of ~terials Stof~ (~t ~ces~ry fo~ ~tor vehicle · ' .' (if different) G. Transfer of Ownership D~te of ~--ansfer Previou~ Owner · Pr~io~ Facility N~ ~, accept fully all obligat~ons of ~it ~. ~ss~ ~ "' "':.:", ." '~,"-' ~ I ~dersta~ that ~e ~mittl~ ~orlty may ~i~ a~ ~ify <or temi~te ~e transfer of ~e ~it ~ ~rate ~is ~dargro~d stor~e facility u~n recelvi~ ~ls c~pleted fora. ~iS fora ~s ~en c~plet~ ~der ~lt~ of ~rj~y a~ ~ ~e ~St of my ~owl~e tr~ a~ corr~t. .. I TANK ~ f~'~// (FILL OUT ,qF. PARATE FORM ~CI! TANK) FOr{ EACH SECTION, CHECK ALL APPROPRIATE BOXES i:. H. 1o Tank is: i-]Vaulted ~lqon-Vaulted ('1Double-Wall ~']Single-Wall I' 2. ~ Material ' ~Carbon Steel [-]Stainless Steel D Polyuinyl Chloride D-]Fiberglass-Clad Steel i' t-] Fiberglass-Reinforced Plastic [] Concrete [] Alumin~ [] Bronze []Unknown [] Other (describe) _ 3. Primary Containment Dste Installed Thickness (Inches) Capacity (Gallons) Manufacturer Tank Secondary ~ontalr~ent [] Other (desor ibe): l~a~u~acturer: ,' ~Material Thickness (Inches) Capacity (Gals.) 5. Tank'. Interior Lining .,. --~Rubber [-]Alkyd []Epoxy []Phenol.lc []Glass (]Clay [-]Unlined []Other (describe): .. I'. 6. Tank Corrosion Protection i' --['~Galvanized [IFiberglass-Clad []Polyethylene Wrap [~]¥inyl Wrapping . ~ ' -' [-]Tar or Asphalt ~nknown []None [-]Other (describe): ...... ~.+ - ..... Cathodic Protection:--['lNone []Impressed Current System. ['~Sacrificial ~%~de System Describe System & Equipment:' · ......... ' ...... ' '- '. 7. Leak Detection, Monitoring, and Interception a.-----Tank: [-]Visual (vaulted ta-----nks only) l IGroundwater Monitorirg' W~ll(s) "~ []Vadose Zone Monitoring Well(s) (2]U-Tube Without Liner []U-Tube with C~mpatible Liner Directing Flow to Monitorirg 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 A~nu/ar Space Daily Gau~irg & Inventory Reconciliation []Periodic Tightness None [] Unknown [] Other b. Piping: Flow-Restricting Leak Detector(s) for Pressurized Piping' []Monitoring Sup with Race~ay '(2]Sealed Concrete Raceway (]Half-Cut Compatible Pipe Raceway (3Synthetic Liner Raceway [']None ~Unknown [] Other · l~escribe Make & Model: - 8. Tank Ti'ghtness ]~l~is Tank Been Tightness Tested? []Yes []No ~Unknown " Date of Last Tightness Test ~/,~/~ Results of Test Test Name ~//~t~ Testing Company ~/~-~//C~ 9. Tank Repair Ta--a~Repaired? (2lYes [-]No ~nknown .. Date(s) of Repair(s) Describe Repairs 10. Overfill Protection Tape rator Fills, Controls, & Visually Monitors Level Float Gauge ~Float Vent Valves [] Auto Shut- Off Controls Capacitance Sensor []Sealed Fill Box [']None []Unknown Other: List Make & Model For Above D~vices a. Underground Piping: ~Yes (2]No []Unknown Material .Thickness (inches) ~ Diameter ~(/~'Manufacturer ~ ~Pressure []Suction ~Gravity "Approximate Length of Pipe ~ b. Underground Piping Corrosion Protection : (-1Galvanized (]Fiberglass-Clad [qlm[xessed Current. []Sacrificial Anode [-]Polyethylene Wrap [-]Electrical Isolation []Vinyl Wrap []Tar or Asphalt ~13nknown []None ~Other (describe) :'~ c. Underground Piping, Secondary Contairment: [~Do~]ble-Wall [~]Synthetic Liner System []None ~]]3nknown [-]Other (describe): :~' . . 1700 Flower Street KERN COUNTY HEALTH DEPA T" ""' HEALTH OFFICER .... '' : ..: ' Bakerefleld, Calll'ornla 93305 '"' '" · F UNDERGROUND ~Z~DO~S '" -' "" .... ?::" :..' '~.:.~;: ~?., .... ~:. ? :1~ ........ -:..... ::-::~ .:: ..... ; .~.: ~Statton .3 ~fleld 'stdeet:' · crru'itun 'AvenUe [ el d ,).2CA Bakers fl eld ,.-":~'CA ~}9330 f 93389 ~iPERMIT TO ABANDON ':',i PER1MIT-EXPIRES 1-. Permitter must obtain a Fire Department permit prior 2. All.Pr°eedures used must be tn accordance with requirements of 'Standards and Guidellnes developed for implementation of Kern County Ordinance Code. A copy of these requirements are enclosed with this permit · :- .. .3. 'A minimum of two samples must be retrieved beneath the center of the tank at depths of approxlmately two and six feet. '-.~:.'....~ 4. AIl ' samples, must be analyzed for benzene, toluene, .xylene and '.'total petroleum hydrocarbons. "-". ...... :. -.-. - - 5.Advise this office of the time and date of .proposed sa'mplin~ DISTRIC'T OFFICES Delano . Lamont , Lake Isabella , MoJave . Rldgecrest . Shafter . Talt 4"~' ~T F~EE, T OLDFII~F:z STATION NC). ~, .=co.=,=- ,, . CiTY OF BAKERSFIELD ,. ,oo. *' '^°' CALIFORNIA ,~,,.w. 'T/.~r' _ OFFICIAL RE~ORDI OF UNDERGROUND STORAGE TANK UNAUTHORIZED RELEASE {LEAK)i:~0N_T.A_ MINATION SITE REPORT EMERGENCY .::: :: - ~ . HA~ STATE OFFIC~ OF EME RGE]dCY S~RVICES' := ..:.!::FOR LOCAl:AGENCY :SE::::::::::::::::::: :::?::::: h: ::: :: :: :: :: :::?:::::::::::??::::::::::::?::{:?:::::::::: ::ii!?:~iii?.~::?:~:?:~i~i~?:~::~:.~?:~::~:~: ~ ~i~:: ~ ~. L._J '=o ~ .... ?' .-'~ .... NAME OF INDIVIDUAL F~JNG REPORT - .. , ~= ;.: o · . . . ,' .~ ,?... -:;.':* .. . ~: -..-~ -= ....:. · -..: ..-..?:; .~ ;:~ '.~' o~u R~RESENTtNG ,_ :~ .-:-, . OWNER/OPERATOR GtC, ARD ,COMPANY OR AGENCY NAME ~ 7~,. ~. :.~ ~¥ ,_- ~,.. ~.. ,~..= ~: J,2~J'C--~L'OC '..1'--'~ ........ ' -;' ~ ": " '~ ~ ~, ,;: '~.:~ -,'-.':--~,~-.~' · · ~A~,,'CY ~OTHER · ~: ': · ~ _ ._ ¢' : '~. ,.., ~,:'-.~;.:...-., ' ~:: ..... "='.. .... - .... ~ .... ~ crrY -' '~ '~ .... - ZI~ "'lr' 7 .... 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':-':-~ ~.,~ ~ o~. m m ~E~ONEO~Y · ~ -. .. ~ ~ U~RMIN~ ~ ~IL~Y ~_ ~o,~o,~ ._. .- .~ .: - ~ SI~ IN~S~ IN PR~RESS (D~IN~G ~ ~ PR~M) ~ ~ IN PR~RESS ~ SI~ OFF (~NUP ~ ~ U~~ ~E~ ~PROPR~ ~T~N(S) (SEE g~K FOR ~AI~) ~ ~ C~Sl~i~' ':_ "~"~ ~ ~VA~I~IE~ ': :'~ Ra~FR~PR~T(~' :~ Eh~EDB~A~N(13 ~ ~ ~NTAINM~B~RIER(~) ~ ~VA~&~T(~.: ~'~ '[.~' ~MP&TR~TG~A~R(G~ ~ RE~ES~Y(~ ~ TR~AT~P~ ~ "O~REOUI~D(N~ . :~ O~E"(O~ ''?' ~-:- "'