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HomeMy WebLinkAboutUNDERGROUND TANKTYPE OF INSTALLATION ( ) 1. In-Tank Level Sensor [XD 2. Leak Detector 'FACILITY NAME Gulf Street Cardlock FACILITY ADDRESS 3305-1/2 Gulf Street, Bakersfield CONTACT PERSON Bill Davies 1. IN TANK LEVEL SENSORS. None ~ Number of Tanks List By Tank ID ~l) 3. Fill Box Name of System Manufacturer & Model Number Contractor/Installer 2. LEAK DETECTORS Number.of Tanks 4 List By Tank ID Res Diesel Unl Extra Name of System Line leak detectors Manufacturer & Model Number Contractor/Installer Red Jacket-221485-116017 3. FILL BOXES Number of Tanks '5 List By Tank ID Reg Unl Diesel ~.Iotor Oil Extra Name of System Pomeco Overfill Manufacturer & Model Number Pomeco ~211 Contractor/Installer Clark Equipment OWNER/OPE~TOR .-- /' NUMBER OF TANKS AT THE SITE: ......................................... ENV. SENSITIVITY ......... EMERGENCY CONTACT PERSON(PRIMARY): NAME: .................................................................................................................................................................... PHONE NUMBER: .................................................................................................................................................... EMERGENCY CONTACT PERSON(SECONDARY): NAME: ................................................................................................................................... ................................. PHONE NUMBER: ............................................................................................................................................ TANK OWNER .INFORMATION: NAME: .................................................................................... . ................... ADDRESS: ........................................................................................................................ PHONE NO.: TANK CONTENTS: TANK ~ MANUFACTURER YEAR INSTALLED CAPACITY CONTENTS TANK CONSTRUCTION: TANK : TYPE(dw, sw, sec.cont.) MATERIAL INT. LINING CORROSION PROT. LEAK DETECTION: TANKS: .... VISUAL .__.__GROUNDWATER MONITORING WELLS VADOSE ZONE MONITORING WELLS U-TUBES WITH LINERS U-TUBES WITHOUT LINERS VAPOR DETECTOR .... LIQUID SENSORS CONDUCTIVITY SENSORS PRESSURE SENSORS IN ANNULAR SPACE LIQUID RETRIEVAL SYSTEMS IN U-TUBES, MONITORING WELLS, OR ANNULAR NONE UNKNOWN OTHER PIPING INFORMATION: TANK (SUC,~,Pt~,ES.>:, , . GRAV. ) CONSTRUCTION (SW,DW,LINEO TR) MATERIAL I LEAK DETECTION: PIPING: ..../...~.].... FLOW RESTRICTING LEAK DETECTORS FOR PRESSURIZED PIPING ............................. :., MONITORING SUMP WITH RACEWAY SEALED CONCRETE RACEWAY .................... HALFCUT COMPATIBLE PIPE RACEWAY ................... C,. rDcrTe ITNFP PAC~WAY NONE UNKNOWN RANDALL L. ABBOTT Agency Director (805) 861-3502 STEVE Mc CALLEY O~rec,or RESOURCE MANAGEMENT DEPARTME T OF ENVIRONMENTAL HEALTH '~ERvIcEs September 13, 1990 2700 M Street, Suite 300 Bakersfield, CA 93301 Telephone (805) 861-3636 Telecopier (805) 861-3429 AGENCY W.P. Davies Oil Company P.O. Box 80067 Bakersfield, CA 93380 Attn: Herb Taylor Re: Underground Storage Tanks Dear Mr. Taylor: After reviewing our files on the underground storage tanks located at Hungry's (#050100), Cardlock (#050072) and Carroll's Exxon (#050062), we have determined that the annual permit renewal fee is due in May, not September. All three accounts are current at this time and permits are valid through April, 1991. You will be billed in'the Spring of 1991 to renew the permits for tanks at these sites for 1991. Also as you requested, we are changing your billing address to: P.O. Box 80067, Bakersfield, CA 93380. The address has been changed on these three sites as well as Pioneer Truck Stop (#460012), Renegade Truck Stop (#330075) and Frazier Park Exxon (#330087). Please feel free to contact me if you have any further questions concerning billing on your accounts. Sincerely, Susan M. Gonzales Administrative Assistant SMG: ch c:clavies, let KRAZAN & ASSOCIATES, INC. Geotechnical Investigations Environmental Engineering Laboratory Soils Testing Monitoring Wells November 30, 1987 Proj. No. E87-084 Fleet Who'tesale Tire 330.5 Gulf Street Bakersfield, California 93308 Attention: tVlr. Aldo Lencioni RE: Preliminary Site Characterization Investigation 330.5 Gulf Std.'eel, Bakersfield, California Gentlemen, [n accordance with your authorization, we have completed a preliminary site characterization investigation at the above-referenced project site. The attaetqed report details our findings from that investigation If there are any questions or if we can be of further assistance, please do not hesitate to contact our office. · 2e herewith invoice lc Kern Co. Environmental Health Dept. Attn: Amy Green iRespectfutly Submitted, KRAZAN, & ASSOCI. ATE5 Jeffrey S. Paimer Environmental Specialist [vtichaet R. Erwin Geotechnicat Engineer P, CE tt].8625/R. GE#297 Main Office: Fresno/Clovis · 3860 N. Winery · Fresno, California 93726 · (209) 291-7337 Bakersfield (805) 393-23~34.'¢{AZ~i~1~ (2~-J~2~E~ Merced (209) 383-3993 FACILITY: ADDRESS : FILE CONTENTS SUMMARY ENV. SENSITIVITY: Activity Date # Of Tanks Comments ! ! · Proj. ac. E87-081 PRELIMINARY SITE CHARACTERIZATION INVESTIGATION 3305 GULF STREET BAKERSFIELD, CALIFORNIA November 30, 1~87 Prepared for: Fleet Wholesale Tire 3305 Gulf Street 13akersfield, California 93308 ~<ITAZAN & ASSOCIATES P~oj. No. E87-081 TABLE OF CONTENTS PROJEC F HISTORY PURPOSE OF INVESTIGATION SCOPE OF INVESTIGATION 'TECHNICAL APPROACH ivlETHOOOLOGY SOIL PROFILE AND SUSSURFACF CONDITIONS Soil Profile Regional Hydrologic Conditions Ground Water Conditions RESULTS OF' CNEMICAL ANALYSIS Tab le I · Table II 0[SCUSSION OF' FINOINGS CONCLUSIOI',IS ANO RECOM,vIENDATIONS Conclusions P, ec ommendations LI~vi[TATIONS P, EFERENCES SITE PLAN LOGS OF SOIL ;BOiRINGS CER. TIFIED ANALYTICAL REPORTS WELl_ INS1-ALLA FION DATA Page No. 1 2 2 3 3 5 5 5 6 7 8 8 10 10 11 12 Drawing No. 1 Appendix A. Appendix Appendix C KRAZAN & ASSOCIATES KRAZA.N & ASSOCIATES, INC. Construction Testinc )ection ..................... ~ ........ Geotechnical Investigations Environmental Engineering Laboratory Soils Testing Monitoring We#s November 30, 1987 Proj. No. E87-08z~ Fleet Wholesale ']-ire 3305 Gulf Street Bakersfield, California 93308 Attention: ivir. Aldo Lencioni Preliminary Site Characterization Investigation 3305 Gulf Street, Bakersfield, California Gentlemen; In accordance with your authorization, we have completed a preliminary site characterization investigation for the above-referenced project site. [t was understood from information provided fo this office that the site characterization investigation was requested by the I<ern County Environmental ldealth Department, after results of soil samples obtained frorn beneath a removed waste oil tank had shown contanination present in subsoils. PROJECF HISTORY The project site was located at 3305 Gulf Street in ~3akersfieJd, California, and was developed as a wholesale tire outlet. Information provided to this office regarding the subject property indicates' the property was developed with a private auto repair bush~ess until about..1969. F'rom [969, the project site was occupied by the 0avies ©it Distributors, where bull< drum and canned quart oils were sold. In 1974, Fleet Tire ¢Varehouse relocated to the project site. At the time of the Fleet 'Fire occupation of the property, steel structures and a canopy were moved [o the site from elsewhere~ and erected. The waste oil tank was understood to have been installed at the rear of the transported building at the project site. i'he waste oil tank was 'utilized to accommodate the storage of waste petroleum products from the auto repair activities at' the subject property. Main Office: Fresno/Clovis · 3860 N.. Winery · Fresno, California 93726 · (209) 291-7337 Bakersfield (805) 393-2343 ~ Visalia (209) 625-8251 [] Merced (209) 383-3993 KRAZAN & ASSOCIATES, INC. Page 2 Proj. ~Xlo. F_87-08~, In 3uly of 1987, a subsurface contamination assessment was conducted by Twin Cities Testing on an adjacent property. The assessment was conducted to determine the extent, of contamination in soils and ground water at the adjacent property with regard to gasoline leakage at. that site. In .luCy 1987, the waste oil tank was removed from the subject property. Soil samples were obtained from beneath the waste oil tank al: the tim of tile tank removal. The results of the chemical analysis conducted on the soil samples obtained from beneath the removed tank had shown contamination present in the subsoi ts. Upon review of the results of the chemical analysis conducted during the tank removal, the Kern County Environmental Health iDepartment requested that a preliminary site characterization investigation be corrducted at the subject property. Nd or. her information was available regarding' the history of the subject property at the time of our investigation. PURPOSE OF- iNVESTiGATION The purpose of the preliminary site characterization investigation ',vas to determine if more significant contamination was present in subsoiIs that what had been disclosed as a result of prelimina.,'y soil sampling which had occurred al: the time o1: the tanks removal Additionally, a cursory observation of site specific ground water conditions would be conducted to assess if contamination by waste oil products had impacted ground water resotJrces at the project site. SCOPE OF INVESTIGATION The scope of the prelirninary site characterization i!~vestigation was limited t.o the area in the immediate vicinity of the removed ',vas[e oil tank, which was located at. the rear (south) side of the existing garage structure at the subject properr, y. The investigation was limited to the advancement: of exploratory soil borings, collect, ion of soil samples, logging o'f subsoils, chemical analysis of sci! samples obtained, inst. atlation of a single ground water monit, oring well, and sarnpl'ing of the ground water for chemical analysis. KRAZAN & A:~.~O,.[ATES, INC. - Page 3 Proj. No. E87-084 TECHNICAL APPROACH The investigation at the project site was approached with the rational fbunded on information obtained regarding the location of the removed tank,' historical depths to ground water, regional ground water gradient and character of the suspect contaminant.' Inasmuch tl~e tank removal excavation was open prior to the investigation, the tank removal hole 'was backfilled with clean soil to allow drilling through the area which was directly beneath the removed tank. Soil samples would be obtained from tiaa[ boring for chemical analysis; and the boring would continue into the ground ,water, allowing installation of a monitoring well. Additional borings would then be advanced and sampled at 90 degree intervals about the tank axis adjacent to the exiting structure, approximately 5 feet from the edge 'of the removal excavation. Those soil b.orings and well would provide samples for chemical analysis; The dala obtained from the drilling, chemical analysis and literature survey would then be analyzed to help determine the extent of contamination at the subject property, within the scope of the investigation described. The raiional and technical approach were developed in consideration of the suspebt contaminant being a dense non-aqueous phase liquid~ in a predominat'ely granular soil matrix, in close proximity to historical r=l~'ound water depths. METHODOLOGY In order to accomplish the goals established in the scope of this investigation, the following me[hods were employed: 1. A proposed work plan was deve'toped for the preliminary investigation, and was submit[ed to [.he ¼em County Environmental Hea[th Oepartment for approval prior to the commenceme, nt of the field investigation. 2. Alt necessary permits were obtained prior to the commencement of drilling and installation of the ground Water monitoring well. KRAZAN & ASSOCIATES, [NC. Page Proj. No. F'87-08/4 total of four exploratory soil borings were advanced to a maximum depth of 25 feet below the existing grade. a,; The primary soil boring was advanced through the center of the tank removal backfilled excavation. Soil samples were obtained at discreet intervals from the boring, and the boring was completed as a ground water monitoring well. 5. Three additional soil borings were placed at: 90 degree increments about the'previous tanks' axis, about 5 feet from the edge of the removal excavation. 6. Soil borings were made by means of a truck mounted drilling rig, equipped with hollow-stem auger. 7. Soil samples were obtained at: discreet intervals by means of pushing stainless sleet tubes. Sampling commenced al an approximate depth of lO feet below the existing grade, and soils were sampled ;~t 5 foot. intervals thereafter. 8. A single ground water monitoring well ~vas installed aL tile ~ubject property, the weti was constructed of Schedule /40 P.V.C. flush-thread well casing. The slotted interval was constructed of 0.020" P.V.C. flush thread well screen, and was installed from t3-J./2 feet below grade to 2~-~/2 feel below grade. Filter media consisting of #2/#].6 grade sand was placed in tl~e annulus about the screened interval, to a depth equivalent Lo 2 feel above the screen. A seal .' composed of bentonite petrels was placed al;op the filter media to achieve a three-foot thickness. A final g!'ouL seal was placed within the rernaining annular space frown [he bentonite seal to the surfade, where a surface vault was installed to accom:nodal'e the well head. 9. The monir, oring welt was developed after compleX:ion by means of surging and bailing. Ground wa(er samples were obtained by means KRAZAN &: ASSOCIATES, [NC. Page 5 Proj. No. EBT-t~84 of a Teflon bailer, and decanted into a valor, itc organics analysis vial. i0. All samples were maintained and transported under chain Of custody protocol. 11. Samples were transported to a State-approved laboratory for chemical analysis. Soil samples were analyzed to del:ecl the presence and concentration of Oil and Grease~ Total Lead and Purgeable Halocarbons. 12. Please refer to the site plan at the end of tile text for soil boring and monitoring well locations. SOIL PROI:ILE AND SUBSURFACE CONDITIONS Soil Profile A total of four exploratory soil borings were advanced to a maximum depth of 25 feet below the existing grade at the project si~.e. The soil profile generally consisted of a silty fine grained sand from the surface to an approximate depth of 9 feet below the existing grade. Below the 9 foot below grade strata, a fine to medium grained sand with occasional interbedded lenses of silt was encountered to an approximate depth of 22 feet below the existing grade. Below the 22 foot horizon, a coarse rounded gr'avel was encounter'ed to the maximum depth of our soil borings wl)ich wel'e te~'~ninated al an approximal;e depth of 2~ feet below the existing grade. For more detailed informal, ion regarding subsoils encountered at [he project site, please refer to the logs of borings included in Appendix A of this report. Regional Hydrologic Conditions The project site was 'located within the South Lahontan ',-tyd~'ologic Study Area, which is pri~nat'ily desr-.,rtt and is drained internally with no outlet to the KRAZAN & AS!~©CIATES, [NC. Page 6 Proj. No. E87-084 ocean. Three.major rivers flow through the region throughout the year (at least in the ul)per reaches) which are the Owens, Mojaw; and Armagosa ~ivers. Within tile study area, 8t ground water basins and areas of potential ground water storage have been identified, of which the inventory covers 55 ground water basins. The total area of the inventory a,'ea is about square miles, with water bearing deposits ranging in thickness up to 2,000 feet. Usable storage for 50 of the basins is about 2a, 7 million acre-feet, with the major limiting factor affecting usable storage capacity be?ng the occurrence of saline deposits within the sediments of tile ground water basins. Ground Water Conditions Grou'nd water was encountered in our exploratory soil borings at. an approximate depth of ].6 feet below the exist:lng grade. ~eview of the Kern County Water Agency Report~ May 1987, I:ends' to corroborate our field observations. The project site was located nerat' the P(ern ~iver~ which through the ;<em F~iver Channel provides recharge to the unconfined aquifer. The proximity of the project site to the k(ern ~iver and also the Galloway Canal suggest that those features influence the hydrologic conditions at the project site. FtESUI_TS OF CHE~4ICAI_ ANALYSIS A total of 8 soil and 1 grodnd wat'~;r sa, npte,,; were obtained for chemical analysis from the project site. Fhe samples were submitted to a State-approved laboratory, and analyzed to detect, the presence of those constituents associated with petroleum waste oil. Soil samples were analyzed to detect l)resence and concentration of Total Lead~ Oil and Grease and Purgeable l--lalocarbons. The ground water sample was analyzed to detect presence and concentration of petroleum constituents by EPA Method ~02 analysis, and Oil and Grease. The results of that analysis is summarized on the Tables aS fo[tows: KITAZAN & ASSOCIATES, INC. Page 7 Proj. No. TABLE [ Concentration of ¢Vaste Oil Constituents in Soil (Concentrations ir] parts per million unless otherwise specified) 'Constituent A-10' A-15' 81-10' 81-15' 82-10' 82-15' 83-10' B3-15' Total Lead (3 Oil & Grease /40.0 Bromodichioro,ne thane n/d Bromoform n/d Bromomethane n/d Carbon Tetrachloride n/d 'Ch 1o robenzene n/d Chloroethane n/d 2-Chioroethylvinyt- ether n/d Chloroform n/d Oibromochtoromethane n/d 1,2-Oichlorobenzene n/d 1,3-Dichtorobenzene n/d 1,4-Dichlorobenzene n/d Oichlorodi flouro- me t bane n/d 1,1-Oichloroethane n/d 1,2-Oichloroethane n/d 1,1-Oichloroethene n/d t r ans-1,2-Oic h loro- ethene n/d 1,2-Dichloropropane n/d cis-l,3-Oichloro- propene n/d trans-l,3-Dichloro- propene n/d ,v~ethylene chloride n/d 1,1,2,2- 1-etrachloro- ethane n/d Tetrachloroethene n/d 1,1,1-Trichloroethane n/d 1,1,2-rrichloroethane n/d Trichloroethene n/d Trichloroftuoro- methane n/d Vinyl Chloride n/d 8.0 4.0 12.0 4.0 24.0 2.0 2.0 n/d n/d n/d n/d n/d n/d n/d n/d n/d n/d n/d n/d n/d n/d n/d n/d n/d n/d n/d n/d n/d n/d n/d n/d n/d n/d n/d n/d n/d n/d n/d n/d n/d n/d n/d n/d n/d n/d n/d n/d n/d n/d n/d n/d n/d n/d n/d n/d n/d n/d n/d n/d n/d n/d n/d n/d n/d n/d n/d n/d n/d n/d n/d n/d n/d n/d n/d n/d n/d n/d n/d n/d n/d n/d n/d n/d n/d n/d n/d n/d n/d n/d n/d n/d n/d n/d n/d n/d n/d n/d n/d n/d' n/d n/d n/d n/d n/d n/d n/d n/d n/d n/d n/d n/d n/d n/d n/d n/d n/d n/d n/d n/d n/d n/d n/d n/,d n/d n/d n/d n/d n/d n/d n/d n/d n/d n/d n/d n/d n/d n/d n/d n/d n/d n/d n/d n/d n/d n/d n/d n/d n/d n/d n/d n/d n/d n/d n/d n/d n/d n/d n/d n/d n/d ~/d n/d n/d n/d n/d n/d n/d n/d n/d n/d n/d n/d n/d n/d n/d n/d n/d n/d n/d n/d n/d n/d n/d n/d n/d n/d n/d n/d n/d n/d n/d n/d n/d n/d n/d n/d n/d n/d n/d n/d n/d n/d n/d KRAZAN &: ASSOI:[ATES, INC. Page 8 Proj. No. E87-08~, TABLE 1[ Concentration of Petroleum Constituents in Ground Water (Concentrations in parts per billion unless specified other:wise) Constituent Well A Sample Benzene 4.17 Chlorobenzene n/d 1,2-Oichlorobenzeoe n/d 1,3-Oichlorobenzene n/d 1,4-Dichlorobenzene n/d Ethyl benzene 2.55 Toluene 25.90 o-Xylene n/d m-Xyiene n/d p-Xylene n/d Oil & Grease (in ppm) <1.0 Legend n/d - Non-detected < - Less than ppm - parts per million For more detailed information regarding the results of chemical analysis, please refer to the certified analytical reports included in Appendix ~ of this report. DISCUSSION OF FINDINGS Soil borings were placed in the i'mmediate vicinity of Lile previously removed waste oil tank location· in order to obtain data which 'would help to 'identify [he presence and possible movement of. contaminants in subsoils and ground water. The soil borings were l)laced adjacent [o the tank removal area, as well as one boring placed through the center of tl~e tank removal baekfilied excavation. The s0il boring advanced Harough the center of the rank backfill area was develop,~.d into a ground water' mo'ni[oring welt. The adjacent remaining KI7AZAN ~ ASSOCIATES, INC. Page Proj. No. E87-084 three soil borings were advanced to obtain soil samples for ct~e~nical analysis and t.o log the subsoils. The soils encountered in exploratory borings at. the project site consisted generally of sands and silty .sands. Those soil types are gener;~lly associated with having somewhat higher rates of permeability than silt or c.lay sized soils. Ground water was encountered at: .an approximate depth of 16 feel below the existing grade at tlae location drilled at tiae project site. Review of published data regarding ground water conditions in the area of the subject property confirm that the depth at wi~ich ground water was encountered ',vas typical. The results of chemical analysis conducted on soil samples generally shows non-detectable presence of contamination. However, the results of the oil and grease analysis had shown iow levels of oil and gre;~s,; presan[ in the subsoils, with the greatest: concentration noted in the soil boring located directly beneath the previous tank location, at an approximate depth of 10 feet below the existing grade. The l0 foot below grade depth was roughly equivalent to a depth of about 4 feet. beloW/ the previous rani< botbom. The results of the chemical analysis conducted on the ground water sample obtained from tl~e monitoring well in'stalled ;~t the project site have shown conta,nination present. The constituents l]oted from that analysis sugges~ thai: the chat'acter of the cont. a~ninant was more fa;niliar to that of gasoline, rather than waste oil. The compounds noted ft'o,~l voiarile ,organics analysis of the ground water sample obtained fro,'n the ,nonitoring welt were limited to Benzene, £thy[benzen% and Toluene~ The results of the oil and grease analysis conducted on the ground water sample, tend to confi~-m that SUSl)i,:ion, indicting less than 1 part per million concentration in ground Auger cuttings from the exploratory soil borings at depths and Ioc~tions drilled 'were field screened with a portable photoioniz;~l.ion detector. The results of [he field screenings had genernlly showh non-detected readings~ with exception of the ,VlW-A boring location. ]'he MW-A boring was sampled depths of 10 and 15 feet. below the existing grad~;, ~nd soil sa,ni~t~.s ~ere field screened as they were obl:ained. The soil sample Gl)rained from the 10 fool depth had shown a response on the photoionization meter of approximately 20 ppm. ]'he corressponding laboratory chemical analysis result of that sa~nple had KRAZAN & ASS(DC[ATES~ [NC. Page 10 Proj. No. ES7-08& shown oil and grease present in the sample at a concentration of 40 ppm, with non-detected levels of total lead o~' purgeable haloearbor)s. CONCLUSIONS AND i~ECOMMENDATIONS Conclusions Based ,_Il)on review of the data obtained fi'om our flied and laboratory investigations,' review of published data regarding ground water and hydrology conditions in the vicinity of the .subject property~ and review of investigations of hydroeal'bon contamination by others ,at an adjaceqt property~ the following conclusions have been developed: ].. Ground water exists beneath the previously ?emoved waste oil tank location at the project site at an approximate depth of ~[6 feet below the existing grade. 2. Niinor levels of petroleum hydrocarl)on conta~nination we:'e noted at an approximate depth of J.O feel: below the existing grade, directly below the waste oil tank removal location. The character of the conta~ninat:ion noted at that location was oil and grease at a concentration of 40 parts per mil!ion, with non-detectable levels of purgeable organic haloca~'bons or total :3. Remaining soil borings and soil samples had shown no evidence of presence of conl:amination by residual wr]sto oil~ either by field observation or laboratory analysis ab depths and locations sampled. 4. Results of chemical aoalysis conduct, ed on a ground wate:' sample obtained from the ground water' moni[toring well installed di~'ectly benea,*h tile waste oil tank removal location had shown contamination present. In our opinion, the Constituents identified in the ground water sample suggest, that character of the conta~nination was more familiar to that of gasoline than waste oil. The const, ituents noted from the analysis were identified as Benzene, Ethylbenzene, and Toluene; with oil and grease concentrations below detection limits. KITAZAN ~-~ ASSOCIATES, iNC. Page 11 Proj. No. E87-084 5. Exploratory soil borings placed radially around the waste oil tank removal location had shown non-detected levels of contamination present, with exception of slightly elevated levels of oil and grease. However', analysis conducted on those additional samples to detect purgeable halocarbons yielded'. non-detected results, tn our opinion, the low levels of oil and grease noted in the subsoils adjacent to the tank removal location were inconclusive in suggesting waste oil contamination, and were not supported as waste contamination by 'other petroleum constituent fetal:ed chemical analysis conducted on those same samples. 6. Review of data obtained from the drilti,~g, soil sampling, and chemical analysis of subsoils in the im,nediate vicinity of tile removed waste oil tank, in our opinion, does not suggest the removed waste oil tank as the source of contamination noted in the ground water at tlae project site (al: the location investigated). Recommendations IBased upon the conclusions developed from interpretation of data obtained during the field investigation, the following recommendations regarding the project si~e have been sdmmat:ized-" 1. It is recommended th-ar a thorough review of existing conditions of adjacent: properties be conducted to help define t. he source of con[a~nir]afion noted in ground water at .the project site. 2. Further, it is suggested that periodic sampling of the ground water monitoring well insl:alled at. I:he project site be conducted to obtain ground water samples for che,-nical analysis. Periodic sainpling and analysis of the ground water from the project site could be conduct:ed al:. bi-annual or quarterly intervals to monitor movement of the noted conta,ninants. KRAZAN ¢~ /\3.~(3,~[AFk. S, INC. Page 12 Proj. No. E87-08b. LIMITATIONS The findings and conclusions presented in this report were based on the results of field investigation, laboratory chemical analysis ;]nd field obse,'va[ion, review of published data regarding geologic and hydrologic conditions in the .vicinity of the project si[e, combined with interpolation of the subsurface conditions between boring locations. Therefore, data is evident only to the degree implied by comparison of data obtained at each berling locafi~Jn, and extrapolation. F'xplorat'ory soil borings were located in the field by tape ,-neasuremef~t from existing landmarks as interpreted from available maps. Those boring locations should be considered accurate only to the degret; implied by those methods utilized to locate them. The conclusions of this report are based on the information provided regarding the project site, review of dat'a obtained f~'o,n drilling, sampling and chemical analysis, the subsurface conditions e~counter,;d at the ti,ne of the invesl:igation, and professional interpretation. The geotechnica[ data presented herewith is bas,-;d dpon ~rofessionat interpretation utilizing the "state of the ar~:" and a degree of conservatism deemed proper as of the report date.. [t is no[ warranted that such data cannot be superseded by future geotechnic:al o(' I:echnological developme~ts. KRAZAN ~: A$5(D(-_[A[E$, INC. Page 13 Proj. No. EIB7-08L~ [f there are any questions or if we can be of further assistance, please do not hesitate to contact our office. Respeel:'fulty Submitted, KRAZAN & ASSOC[A/.FES 3effrey 5. Palmer Environmental Specialist MF~E/JSP/ko Geoteehnical Engineer RCE t/,18F, ZS/P, GE# 297 2e herewith invoice lc Kern County Environment. al Health ,Dept. Attention: Amy Green KRAZAN ~ ASSOCIATES, INC. Page la, Proi. ,No. E87-08/4 References Hem, Stephen C., and Melancon~ Susan M. 1986. Vadose Zone ?vlodeling of Organic Pollutants~ Lewis Publishers Inc., Michigan State of California, DOHS. _~.986. S;l:e Mitigation Decisio;1 Tree ~Vlanual, Draft working 'document State of' California, Water Resour'e~.s Control 3oat'd, 19,37. Leaking Underground Fuel Tank Field Manual (I_UFT), draft document Ke~'n County Water Agency, iVlay 1986, Water Supply Report, Kern County Water Agency, (~Cebet!., ,~t. al). Schwendeman, T.C., and Wilcox, H.K., 1987. Underground' ~torage ayst.ms. Lewis Publishers, ~nc. ;Vdchigan Twin City 'I'esting~ Incorporated, Subsurface Contaminatiof~ Assessment, Davies Oil Company, 8akersfield~ LTalifornia~ .#/-47_:31 87-5:3:5, 3qly~ 1987, St, Paul, ;Vtn. (an asst;ss~nent report) KITAZAN ,~ ASS(DCIArE!-;, INC. · .~ A,~.ro~_~¥~____ Merced Fresno Visalia Bakersfield Pr~iect No Drawing Project FLEET WHOLESALE TIRE Boring No. 1 BAKERSFIELD, CALIFORNIA Proj. No. E87-084 DATE DRILLED: October 13, 1987 TYPE OF BORING: 8 1/2" Hollow Stem HOLE ELEV: GROUNDWATER LEVEL: LOGGED BY: SC 3" Asphaltic Concrete, 3" Aggregate Base Fine SILTY SAND (SM); medium brown, minor mica, damp, drills easy 5- Fine SAND (SP); white, grey and orange, damp, drills easy ]o- 0 x No aroma Well-graded SAND (SP); orange-tan, damp, 0 x drills easy BOTTOM OF BORING 20-- 25-- R = Refusal, greater than 100 blows/,foot KRAZAN & ASSOCIATES Fresno · Visalia · Bakersfield Sheet 1 of Project FLEET WHOLESALE TIR"[ Borincj No. 2 BAKERSFIELD, CALIFORNIA Proj. No. E87-084 DATE DFIILLED: October 13, 1987 TYPE OF BORING: 8 1/2" Hol 1OW Stem HOLE ELEV: GROUNDWATER LEVEL: LOGGED BY: SC C~ "r- at~ o 3" Asphaltic Concrete, 4" Aggregate Base - Fine SILTY SAND with mica (SM); dark brown, damp, drills easy 5~ Well-graded SAND (SW); tan-orange, damp, drills easy F. ine SILTY SAND with mica (SM); dark brown. damp, drills easy lo- 0 x Fine SAND (SP); tan, damp, &ills easy No aroma Well-graded SAND (SW); tan, damp, drills easy 0 x No aroma 15-- . BOTTOM OF BORING I' 20-- 25-- *R = Refusal, greater than 100 blows/foot KRAZAN & ASSOCIATES Fresno · Visatia · Bakersfield Sheet I of i Project FLEET WHOLESALE TINE Boring No. 3 BAKERSFIELD, CALIFORNIA Proj. No. E87-084 October 13, 1987 8 1/2" Hollow Stem DATE DRILLED: TYPE OF BORING: HOLE ELEV: GROUNDWATER LEVEE' LOGGED BY: .cig = ~ ~ ~ o SOIL DESCRIPTION m g~ ~A ~ ~ 3" Asphaltic Concrete, 3" Aggregate Base Very f~ne to f~ne S~LTY SAND (SH); med~un brown, damp, drills easy 5- Very f~ne SAND w~th SILT (SP-SH); medium brown, damp, drills easy lO- 0 x No a~oma F~ne SAND (SP); grey-white, damp, d~i]]s easy 0 x No aroma 15- BOTTOH OF BORING :20-- 25-- *R = Refusal, greater than 100 blows/foot KRAZAN & ASSOCIATES Fresno · Visalia · Bakersfield Sheet 1 of 1 Project FLEET WHOLESALE TIRE Boring No. 4 BAKERSFIELD,.CALIFORNIA Proj. No. E87-084 I DATE DRILLED: 0dtober 13, 1987 TYPE OF BORING: 8 1/2" Hollow Stem HOLE ELEV: GROUNDWATER LEVEL: LOGGED BY'. SC - ~ B~. '~D ~.~, .- ~ o~ ._ ~. ~' ~ E o SOIL DESCRIPTION ~ ~' ~ ~o ~ = ~ ~- - '~ ~ Well-graded SAND (SW); light brown, damp., mi nor silt, drills very easy Septic odor 5I to- 20 x . Fine to medium SAND (SP); salt and pepper, damp, drills easy Septic odor 15- 0 x No aroma Saturated @ 16' 20-- Coarse, Founded gravel GRAVEL (GP)' saturaied 25- drill~ qlig.htly rnugh ' I BOTTOM OF BORING *R = Refusal, greater than 100 blows/foot KRAZAN & ASSOCIATES Fresno · Visalia · Bakersfield Sheet 1 of 1 WHILE YOU WERE OUT ~ ......... ~~~....~..~~.o.~...~.i. /" ~' i ~ .~. Telephoned Will call aQain . Holding on line ~ ............ Please call .~t.;~ Long distance call _ Returned your call ~ I '---i' Came to see you Waiting to see you PAS 580 1151 395-5009 (R.3-86) ~4GMCI// C/tEM/£AI ANAl Y$/$ PEtROl EIlM LABORATORIES, InC. J. J. EGLIN, REG. CHENk ENGR. 4100 PIERCE RD., BAKERSFIELD, CALIFORNIA 93308 PHONE 327-4911 PURGEABLE ORGANIC ANALYSIS (WATER) RAZAN AND ASSOCIATES ATTN: JEFF PALMER 860 NORTH WINERY FRESNO, CA. 93?28 Date o£ REPORT: 11-03-87 LAB No.: 21332-1 AMPLE DESCRIPTION: PROJECT~ E87-084 WELL A ATE oAMPLE COLLECTED: 10-30-87 DATE SAMPLE RECEIVED ~ LAB: 10-30-87 DATE ANALYSIS COMPLETED: 11-05-87 EST METHODS: EPA 602 CONSTITUENT Benzene ~hlorobenzene ,~-Dichlorobenzene =,3-Dichlorobenzene 1)4-Dichlorobenzene thyl benzene oluene o-X¥!ene --X¥1ene -Xylene AS RECEIVED BASIS REPORTING UNITS ~g/1 i~g/1 ~.g/1 ~g/1 ~g/1 ~g/1 .l~g/1 ~g/1 ~_~g/1 ~.~g/1 STORET CODE 34030 34301 34536 34566 34571 34371 34010 81551 81551 81551 ANALYSIS RESULTS 4.17 none detected none detected none detected none detected 2.55 25.90 none detected. none detected none detected MINIMUM REPORTING LEVEL 0 5 0 5 0 5 0 5 0 5 0 5 0 5 0,.5 0.5 0.5 COMMENTS: Y PETI~OIEUM LABORATORIES, Inc. J. J. EGLIN, REG. CHEM. ENGR. 4100 PIERCE RD., BAKERSFIELD, CALIFORNIA 93308 PHONE 327-4911 ~AZAN AND ASSOCIATES ~60 NORTH WINERY' FRESNO, CA. 93726 IMPLE DESCRIPTION: TRAVEL BLANK FOR LAB~ ATE .~AMPLE COLLECTED: 10-30-87 EST METHODS: EPA 602 CONSTITUENT benzene Chlorobenzene ,2-Dichlorobenzene _,3-Dichlorobenzene 1,4-Dichlorobenzene -thyl benzene oluene o-Xylene ~-Xylene -Xylene COMMENTS: PURGEABLE ORGANIC ANALYSIS (WATER) ATTN: JEFF PALMER 21332-]. DATE SAMPLE RECEIVED ~ LAB: 10-30-87 AS RECEIVED BASIS REPORTING UNITS ;~g/1 ~g/1 ;xg/1 ~g/1 ;xg/1 p.g/1 ~g/1 STORET CODE 34030 34.301 345:36 34566 34571 34371 34010 81551 81551 81551 Date of REPORT: LAB No.: 11-03-87 TRAVEL BLANK DATE ANALYSIS COMPLETED: 11-03-87 ANALYSIS RESULTS none detected none detected none detected none detected none detected none detected none detected none detected none detected none detected MINIMUM REPORTING LEVEL 0 5 0 5 0 5 0 5 0 5 0 5 0 5 0 5 0 5 0 5 An~.s t / / J J EGLIN REG CHEM ENG~ PETROLEU~ UAIN OFFICE: 4~00 ~IERCE ROAD, BAKERSFIELd, C~. 93308 ~HONE 327-49~ ~ Krazan & Associates, Inc. 3860 North Winery Fresno, CA 93727 Date Reported: 11/11/87 Date Received- 10/30/87 Laboratory NO.' 21332-1 'WATER ANALYSIS Sample Description: MW-A E87-084 10/30/87 14:45 Oil & Grease, mg/kg (-) 1. (-)refers to "less than" B C LABORATORIES, INC. Vd. J ? Eg 1 ,.:. & Associ C;eo~echnical Consultants, Inc. We~levl Bt,mn, CF lulmR ~ob~'rt I). SL,nl~, CI John II. Krazan ~ Associates, Inc. 3860 North Winery Fresno, California 93726 (Project #E87-084) EPA 8010- PURGEABLE lamp, C Sutto '~ Cf. ,\h.~/' I.~kan( ~r.CL John H ri,: (]I.C Lab No. 2207-1 2207-2 2207-3 Lab No.- All Units in Bromodichloromethane B romoform B romomethane Carbon tetrachloride Chlorobenzene . Chloroethane 2-ChloroethylvinyI ether Chloroform Chloromethane Dibromochloromethane 1,2-Dichlorobenzene 1,3-Oichlorobenzane 1,4-Dichlorobenzene Dichloroctifluoromethane 1, l-Oichloroethane 1,2-Oichloroethane 1,1-Oichloroe~l~ene trans-1,2-Dichloroethene 1,2-Dichloropropnne cis-1,3-Dichloropropene trans- 1,3-Dichloroproper~e Med~ylene chloricle 1,1,2, 2-Tetracl~loroethane Tetrachloroethene 1,1,1-'I-richlo-oetl~ane 1,1,2-Trict~loroeLhane Tricl]loroethene T richloro ri uo,'om c. tha~e LAB NO- Ch872207 Received. 10/20/87 Reported: 10/26/87 HALOCARBONS Sample Description(Soil) A @ 10' - 0940 hrs. A @ 15' - 0955 hrs. B1 @ 10' - 1500 hrs. rog/Kg 2207-1 ND 2207-2 ND Da. te Sampled 2207-3 ND 10/13 10/13 10/13 Detection 0.01 Vinyl Chloride . . L:lb Direct. or: ~, ND=None Detected ,~ t'r esno. C.~ h l,)r n,., '.' IFH,, 1-11 .l q:.m,,I.tus Str,,,q T,d,..l)hone ( 2¢,H .I~G tti 111 n Visalia. (],ihlorm,i 't 12711 ~'Itll Su ,Mo,m,.~ lllvd , P 0 lhJx V2 ]b (209) 732-8857 Geotechnicat Consultants, Inc. \Vt,~Jey J IJrJu, (.'[ John R H~.dlev. CE RnberID Skaq~,Cl! john~ x~nom. CE Ilugo Kevork.an. CE John ',~ ',hnn,~,,,. C[ K~azan $ Associates, Inc. 3860 North Winery Fresno, California 93726 (Project #E87-08q) EPA 8010- PURGEABLE Lab No. Samote J,um.s C. Sub:on. CE John H TI.rabbi- V,dd~mm. Ch LAB NO: Ch872207 Received: 10/20/87 Reported: 10/26/87 HALOCARBONS Description (Soil) Date Samp!'ed 2207-q 2207-5 2207-6 Lab No.- All Units in rog/Kg B romod ic hi o rome than e B romoform B romome~hane Carbon (etrachloride Chlorobenzene Chloroe~hane 2-Chloroethylvinyl ether Chloroform Chloromethane Dibromochloromett~ane 1,2-Dichlorobenzene 1,3- O ich!cJFobe~z.ene 1, q-Dichlorobenzene Dichlorodifluoromethane 1,1-Dici~loroett~ane 1,2-Dich!o:oethane 1,1- Dicl~loroethene trans-1 , 2-Dichloroetl~ene · 1,2-Oichloropropane cis- 1,3-gichloropropene trans- 1,3-Dichloropropene Mett~,ilene chloride 1, 1,2, 2-T.etrachloroeti~nne Tetrachloroethe~m 1,1 1-Tricl~loroett~ane 1,' 1[ 2-Trict]loroetl~ane Tricl~lorocthe~m T richloroFl Vinyl Chluride ND=None Detected B-1 @ 15' - 15q5 hrs. 10/13 B-2 @ 10' - 1615 hrs. 10/13 B-2 @ 15' - 1630 hrs. 10/13 2207-]4 2207-5 2207-6 ND ND ND Detection 0.01 Associates Geotechnical Consultants, Inc. We,lev I Ilraun. CI I~h, R th.dh.v. ]uhn It ,%l(~)r~,. Iohn.M '.In :v CI Krazan'& Associates, Inc. 3860 North Winery Fresno, California 93726' (Project #E 87-084) EPA lame', (~ Sullon, CI /\h.~Y I,k,ind,.~.( I LAB NO: Received: Reported: 8010- PURGEABLE HALOCARBONS C h872207 10/20/87 10/26/87 Lab No. Sample Description(Soil) Date Sampled 2207-7 2207-8 B-3 @ 10' -"1700 hrs. B-3 @ 15' - 1720 hrs. 10/13 10/13 Lab No.- All Units in Bromoctichlorome(hane B romo fo rm B romome[hane Carbon tetrachloride Chlorobenzene Chloroe~hane rog/Kg 2207-7 2207-8 Detection Limit ND ND 0 01 2-Chloroethylvinyl ether Chloroform Chloromethane Dibromochloromethane 1,2-Dichlorobenzene 1,3-Dichlorobenzene 1, q-Dichlorobenzene Dich oroctifluoromethane 1,1-Dicl~loroethane .1,2-Dichloroethane 1,1-Dichloroed~cne trans-I, 2-Dichloroe(hene 1,.2-Dichloropropnne cis-1,3-Dichloropropene t ran'.;- 1 ,.3- Oichlor~prol)cne Methylene chloride 1,1,2, 2-Tetracl~loroett~;~ne Tetrachloroetlm~m 1,1, 1-Trichloroethane 1, 1,2-Trichloroetlmne Tricl~loroethe,~e Trichlorofluoromethnne Vi,~yl Chloride [ 1' ~ . ,/i' ,.._~.-,~r'~ :i; ~, ~; t ~, LaD Dtrc:ct~ BSK & Associates. Cr~E~41CAL LABORATORY TEST O~,A Krazan & Associates, Inc. 3860 North Winery Fresno, California 93726 Project #E87-084) RZCE~V~D: 10/20/87 S~mU~D: 10/13/87 BY: S. Curra LAB NO. S A?~P ~--~~ !Dgh'r!F ICATION 2207-1 A @ 10' 0940 hrs. 2207-2 A @ 15' 0955 hrs. 2207-3 Bl'@ 10' 1500 hrs. All Units ,n mglKg unless Otherwise Noted (SOIL) LAB NO. LAB NO. I LAB NO. t LAB NO'J' DETERMINATION 2207-1 2207-2 2207-3 DETERMINATION 2207-1 2207-2 2207-- Acidity Total (taCO3) Nickel (Ni) , , Alkalinity Total (CaCO3) Nitrate ( ) Alkalinity Phth (CDC03) NiLriTe ( Aluminum (Al) Nitrogen, Kjeldahl (N) An~nonia ( ) NiTrogen. Organic (N) Arsenic (As) Odor (TON) Bari, un <Ba) oil a Crease 40 [ 8 4 Berylium (Be) { pH (STd. Units? Bicarbonate (}tC03) { Phenolics Bio Oxygen D~nand (02) ! Phosphate, Ortho ( ) Boron (B) Phosphorus, Total ( ) Bromide (Bt) PoTas~iuun '(K) Cadmium (Cd) Residue, Total ~T 104'C. Calcium (Ca) ! "Total Volatile, 550'C.I - ., _ Carbon. To~.Organic (C) I "Total Filterable (TDS) Carbonate (CO~)[ "Total NonfilTerable (SS) Chem. Oxygen De~nand (02) ', Tot.Volacile N,)n~iltersble Chloride (C1) Seleni~nn (Se) _ Chlorine. Residual (CI2) t Silica (Si02) Chlorophyll ( )I, Silver (Ag) Chromiu~a (Cr+6)' { Soditnm (Na) ~Chromium, Total (Cr)) Solid~. Set:leable (M1/i/h) t "' Cobalt (Co) Sulfate (SO4) Color (APHA) Sulfide (S) Cond~acti'zitT, Sulfite (SO3) (;~m2~os/cn), at 25°C. Surfactant~ (MJ~\S) Copper (Cu) Turbidiny (!4TU) Cyanide. Total (CN) Zinc (Zn.) Fluoride (F) To~al Colifo~na (MPI;/10C~ul) Hardness (CaCO3) Fecal Coliform (~:;/100~) Iron (Fe) Lead (Pb) <3 <3 <3 Magnesium (MC) Manganeae (M~n) Mercury (]{g) ,_. Mo lybdemx~ CHo) . BSK & Associates. CHEMICAL LABORATORY TEST DA,A Krazan 8 Associates, Inc. 3860 North Winery Fresh'o, California 93726 (Project #E 87-084) 10/20/87 10/13/87 S. Curra LAB NO. .~ .U~3 LE IDE.~I¥ICATION 2207-4 31 @ 15~ 1545 hrs. 2207-5 32 @ 10' 1615 hrs. 2207-6 B2 @ 15' 1630 hrs. All Units in mglKg unless Otherwise Noted (SO L) LAB NO. LAB NO. LAB NO. [ LAB NO. I LA8 NO. LAB ~.. DETERMINATION 2207-q 2207-5 2207-6 DETERMINATION, 2207-q 12207-5 2207-6 Acidity Total (CaC03) Nickel (Ni) AlkaliniTy Total (CDC03) Nitrate ( ) AlkaliniTy Phth (CDC03) Nitrite ( ) Aluminum (Al) Nitrogen, Kjeldahl (N) An~nonia ( ) Nitrogen, Organic (1;) Arsenic (As) Odor (TON) Barium (Ba) Oil & Crease ]2 ! it ?4 ' Berylium (Be) pH (S~d. Units) Bicarbonate (HCO3) Phenolics Bio Oxygen De.and (02) / Phosphate, Ortho ( ) Boron (B) Phosphorus. Total ( ) Bromide (Br) Potassium (K) Cadmium (Cd) Residue, Total ~t 104'C. Calcium (Ca) ,, Total Volatile, 550'C. Carbon, Tot. Organic (C) "Total Filterable (TDS) I Carbonate (CO~) "Total t:onfilterab!e Chem. Oxygen D~mmnd (02) "Tot.Volatile Nonfilr. er~ble , Chloride (C1) Selenium (Se) ] Chlorine, Residual (C12) Silica (SiO2) Chlorophyll ( ) Silver (Ag) Chromit~a ('Ct+6) Sodium (Nd) Chromium, Total (Cr) Solida, Settleable (Mi/i/h) Cobalt (Co) Sulfate (SO4) Color (AP}Ok) Sulfide (S) Conductivit7, Sulfite (503) (~os/cm), at 25°C. Surfactants (MdlgS) Copper (Cu) Turbidity (!,iTU) Cyanide, Total (CN) Zinc (Zn) j Fluoride (F) To~al Colifo~na Hardne~m (CaCO3) Fecal Coliform (z.~N/ Iron (Fe) Lead (Pb) .~<3 <:3 < 3 Ma~ne sium (ME) M~nganes e Me ret~), [~ lybder~m Crt. o) BSI & Associates CHEMICAL LABORATORY TEST Krazan & Associates, Inc. 3860 North Winery Fresno, California 93726 (Project #E87-08q) ~czzvz~: 10/20/87 s,~mngo: 10/13/87 BY: S. Curra ~ORT ~x£: l 1 / 2 / 87 L~B NO. S A.~:~- LE IDKh~!FICATION 2207-7 B3 @ 10' 1700 hrs. 2207-8 B3 @ 15' 1720 hrs. All Units in mg/Kg unless Otherwise Noted (SOIL) LAB NO. LAB NO. LAB N<). ,LAB DETERMINATION 2207-7 2207-8 DETERNINATION 2207-7 2207-8 Acidity Total (CaC03) Nickel (NJ) Alkalinity Total (Cat03) Nitrate ( Alkalinity Phth (taCO3) NiLrite ( Aluminu~ (Al) Nitrogen, Kjeldahl (N) . Anm~onia ( ) Nitrogen, Organic (N)' Arsenic (As) Odor (TON) Barium (Ba) Oil & Grease 28 Berylium (Be) pH (S~d. Units) Bicarbonate (}1C03) Phenolics I ' Bio Oxygen De~and (02) Phosphate, Or:ho ( ) Boron (B) Phosphorus. Total ( ) Bromide (Bt) Potassium (K) Cadmium (Cd) Residue, Total ~ 104'C. Calcium (Ca) "Total Volatile, 550'C. Carbon. Tot. Organic (C) "Total Filterable (TDS) Carbonate (CO~) "Total Nonfil~erabla Ghem.O'xygen Den%and (02) "Tot.Volatile Nonfii".~rsble Chloride (C1) Selenium (Se) Chlorine, Residual (GL2) Silica (glo2) Chlorophyll ( ) Silver (Ag) Chromiums (Ct+6) Sodium (Ns) Chromiura, Total (Ct) Solids, Se~leable (Hl/!/h) Cobalt (Co) Sulfate (SO4) Color (Ai~HA) Sulfide (S) ConductivitT, Sulfitc ($03) (~mho~/crn). at 25'C. Surfactant~ (Fig\S) Copper (Gu) .... Turbidity (!.;TU) Cyanide. Total (CH) Zinc (Zn) Fluoride (F) Total Colifona (FtPN/!CC~ul) Hardne~ (CaCO3) Fecal Coliform Iron (Fe) Lead (Pb) <3 <3 Mag"ne · ium (Mg) biangane,e (Man) Me r ct~-y 1( RAZA N AS~uCItx ED, · DATE PAGE .--_~-~. OF ,/' · PARAMETERS -' OTHER AD~)R£~ _KP. kZAN ~, ASSOCIATES, INC'. _3B60 Hno~u WINERY ~ ~ ...... z 0 OBSE RVAT IO~:Sl l~ o g ~ o S~MPLE t40 DATE TItAE LOCATION o ~ ~ ~ ,- o ~ u Z ~LJNOU~H[DBY / DATE . RECEIVED'BY DATE It~LiNOUiSHED UY DAT~ -- CEiVED BY DATE JTOTAL N'[JMBER -- !t,IETHOD OF SHIPME~T ' '' OR STORAGE RELINQUISHED BY DATE RECEIVED BY DATE RELINOUISHED RY DATE RECEIVED BY Ilaboralotv} ' 'D~'TE Tit..1 E TIME TIME ~TlrdE C'-ai..~f C st,~,~y F,,.co, ~ ADDRE'ZS -":?-£-:-:~ &.'-.EEC. C:.'-.?ZS. LCSAT:ZN F.',iQ /~' L% -L a'~/5/ · PA R A;,',E-T E RS · :>'-~ ~ . OT4ER ,VI' I"'A.I X: ;RI I"X.I 'X x'l I.'~lb< ~'1 I~l"x' I IONS/ DAT= -: TOTAL :;U;.t.~ER OF CC,';7A;;;E RS iTi:,:E I R--F-EIVED BY I:;,::.r~tory) ICATE.. I i Ti.'4E I i i71:.;E I DATE 1 t.::.':HOO oF JTi.'AE I SPEC:AL EF:'!FM E NT;'H A ~: O L !~;~ OWNERS CONTRACTORS ARCHITECT OR ENGINEER APPLICATION FOR PERMI'Od,~""~'''''d-'')Or'''Y /'~~ ...... _ ......... CiTY OF BAKERSFIELD BUILDING DEPARTMENT .... ._ """"~ Pu~c WorKs DE,~T~E.~ P.~o. ~o Occu,~.c~ 45'7 Use Zone ~.i ) . ~ Occ Type ConsL Use Code ~.: ,--'--- ~'~ ~;".~ (ICt~la..nning ...... ~ ".... L i '. ,.. L. Ac[mn : ' Tract/PM ' Lot School District ... ..: :.~-- Dist. No. ,. ,: No. Bedrooms ~, "/t ARCH. OR ENG. ADDRESS ZIP APPL~ANTS ~DDRESS LICENSED CONTRACTORS DECLARATION Use of Building /..~. ·/, ,.,... . ~, ...~ / C0ndit. Area " ..... ~Storie~"- '"" ? '/ Gross Area et Bldg. .. ~ ~ ...... . /"' ELECTRICAL ENERGY T-24 Item I No.I Fee Item No.t Fee NESW R- Floor R- I hereby affirm that I am licensed under provi.si0n .of Chapter 9, (commencingwith Section 7000) of Division 3 el the uusiness Bna Professions Code, and my license is in full force and effecL Iic. Class C, 7..? Uc. Number L! ~':i ~. 5~ t')~ '"' (~(N~E~-BUILDER DECLARATION Elect. Ser 1t0V Outlet Fixtures Range or Heater Motor HP Area S.F. Plan Issuance TOTAL FEE I hereby affirm that I am exempt from the Contractor's license Law for the lollowing reason. (Sec. 7031.5, Business and Professipns Code: Any city or county which requires a permit to construct alter improve demolish, or repair a.ny structure, prior to its issuance also requires the applicant for such permit to file a signed statement that he is licensed pursuant to the provisions of the contractor's License Law [Chapter 9 (commencing,with Sec. 7000) of Div. ,3 et the, Business and Professions codel or that he is exempt therefrom and the basis for th.e alleged exemption. Any violation of Sec 7031 ~5 by. any applicant tora permit subjects the aoplicant to a civil penalty et notmore than five hundred dollars ($500): [~ I, as owner of the pro~, or my employees with wages as their sole compensation, w~ll do the work, and the structure is not intenc~ed or offered for sale (Sec. 7044, Business and Professions, Code: The Contractor's License Law does not apply to an owner et prope~ who builds or improves thereon and Who does such work himself or through this own employees provided that such improve- Tents are not intended or offered tor sale., If however, the building or improvement is sold within one year et completion the owner- builder will have the burden of providing that he d d not bu td or improve for purposes of sale). ~ I as owner of the pro~rty, am exclusiv,e!y contracting with licensed contractors to conslruct the project (Sec. 7044, Busmes, s and Profession. s Code: The contractor s License Law does not aop~y to an owner el prope~'y who builds or improves thereon, and contracts for such pro ects with a contractor(s) licensed pursuant to the Contractor s License Law. ~ t am exempt under Sec. , B. & P.C. for this reason Owner Date WORKER'S COMPENSATION DECLARATION I hereby affirm that I have a certdicate of consent to sell insure or a certificate o~ Workem' Compensation Insurance, or a certified copy thereof(Sec. 3800. Lab C:. Po icy No. Company [~ Certified Copy is hereby furnished. [~ Certifl~ed Copy is flle~ with the city inspection division. Ap~icen, '~-/~./,_~ (~L..[.~,. _ CERTIFICATE OF EXEMPTION FROM WORKERS' COMPENSATION INSURANCE [']'his section need no! be completed il the permit is for one hundred do ar.s ($100) o.r lessL I cemfy lhat in lhe performance o! the work for which t~is permit is issued. I shall not em ploy any person in any manner so as lo become subject to the Worker's Compensation Laws of Calilornia. Date Applicant NOTICE TO APPLICANT: If after making this Certificate '~f Exemption you s.hould becom~e s, ubject to the ,Workers' Compensa- tion. provisions et the Labor ~,ooe you must torthwith comply with such provisions or this ~rmit shall be deemed revoked. CONSTRUCTION LENDING AGENCY I hereby affirm that there is a c.onstruction lendinp, agency for my pedormance of the work which mis permit is issued (Sec. 3097. Civ. C). Lender's Name Lender's Address certify that I have read this application and slate that the above ntormation is correct. I agree to comply with all city and county ordinances and state laws relating to building construction, and hereby authorize representatives oflhis city to enter upon the above- mentioned property for inspection purpeFes. SgnatureofApplicant .... .~ ;',,_t I ( . Date PLUMBING 1Bath WHir. 2 Baths W Line 3 Baths G Line Sewer Bk FP, Toilels PoD Filter Bath/ Septic Shower Tank Lavatory/ I Plan Ck. Sink ] Issuance I TOTAL Solar FEE New Units 1800 & Under New Units Over 1800 SF Heating lOO,OOO BTU & Under Heating Over 100,000 BTU Comb. H&C Swamp Cooler MECHANICAL Compressor Hood Vent Fan Vent Pool -leater ~lan Ck. Issuance TOTAL FEEl I FEES Plan Check S-1 Bldg. Permit S-2 Plumb. Permit S-3 Elect. Permit Mech. Permit S-5 Special S-6 Sign Permit S-7 Downtown I S-20 School Fees Sewer Bonds 74-1261271 Valuation I Fee TOTAL I I Approved BUILDING DIRECTOR Ceiling R- Glazing S D T Air Inflrat. S M T. Mass KED B1, B2, B3 HTG. A/C SPECIAL INSPECTION I~1 Concrete [~ Weld, HS Bolts [~ Structural Steel [~] Masonry [~] Fire Proofing ~ Othe'r SPEC. SOIL REQD. '~ SPEC. SETBACKS/ ZONING REQ'D Permit # Permit No. BY . DATE PERMITTE~ ~ PERMIT TO DRILL AND PRODUCE OIL AND GAS WELL /9{-~ ZONE, INC!/JDING PERMIT FOR ~EARTHEN SU~.~ IN CITY OF BAKERSFIELD BUILDING DEPARTMENT Location of Well: ~ermit No. ~- ~5 ~S / Permit Fee $~2~'~c=> ' Attachments: ~ Performance Bond ~ Location Map /~Sketch of Earthen Sump showing 6' chain link fence ~ Certificate of Self-Insurance Workers ' Cc~,~ensation ~ ~'~nditions of Permit to drill and produce an .oil and gas well and for earthen sump in an t~- Zone within the City of Bakersfield at the location stated above, pursuant to the conditions of the C.U.P. / All drilling, including installation and operations shall confo~ to all conditioned attached hereto and inco~porated herein as though fully set forth in this permit. Dated: BUILDING DIRECTOR CI~RSFIELD FIRE DEPARTMENT CITY OF BAKEP, SFIELD KERN COUNTY HEALTH DEPARTMENT DIVISION OF ENVIRONMENTAL HEALTH 1700 FLOWER STREET BAKERSFIELD, CA 93305 TELEPHONE: (805) 861-3636 APPLICATION FOR A PERMIT TO CONSTRUCT, RECONSTRUCT, DEEPEN OR DESTROY A WELL APN: 10/9/87 " APPLICATION DATE 10/]9/87 PROPOSED STARTING DATE ' 10/20/87 PROPOSED COMPLETION DATE OWNER'S' NAME ADDRESS. 'F.i'~'et::Wholesaie Tire 3305 Gulf. Street Bakersfield, CA 93308 CONTRACTOR :Krazan/and.-l. Associates UC,--NSE NO. C57-499908 ADDRESS 3860 N., Winery PHONE NO.( 209 ) 291--7337 Fresno,..CA, 93726 SUBCONTRACTOR .'.:,' .'.-"' LICENSE NO. ' ' ADDRESS ".'", ''~-': : T 29S R 27E ":~i;~¢:'"''23' NE/4 · SEC;.,' 40 ACRE SU,. HOME PHONE NO.(805) 871-833'1 WORK PHONE NO.( 805 ) 325- 1261 JOB SITE: DIRECTIONSTOWELLSITE: East of Pierce :Road on' south side Gulf Street ""',':: Well located directly behind garage on-west side TYPE OF WORK DONE: NEWWELL [~' .i.]~.,:DEEPEN [] (CHECK ONE) RECONSTRUC~ION ~-] :~i.: "..'":""~;;;!?'i":"0 EST R U CT I O N [] INTENDED USE: DOMESTIC/PRIVATE DOMESTIC/NONPUBLIC DOMESTIC/PUBLIC TEST HOLE MONITORIN{~ CATHODIC PROTECTION OTHER [] (1 Connect'Ion) CONSTRUCTION METHOD: [] (2-4 Connections) [] (5 or more connections) r'-]' DEPTH TO WATER: ROTARY [] CABLE TOOL [] ',. BORED [] OTHER Hollow Stem,'Auger 16 feet SEALING MATERIAL (CHECK ONE). NEAT CEMENT [~ w/3% Bent CEMENT GROUT ~ CONCRETE [] PUDDLED CLAY [] OTHER GRAVEL PACK (CHECK ONE) YES ~ NO [] EROM 13 f~o 25 ft FROM tO~ PROPOSED CASING DIAMETER TYPE Stai nl ess DEPTH '25' CONDUCTOR: GAUGE/WALL YES ~3 NO [] PROPOSED WELL DEPTH: MAx 26 FT MIN 25 FT .ENETRATES ~ oR MORE AOU,FERS ,YES [] NO [] Healtl~ 580 4113 208 EH (Rev. 5/87) (Pg. I of 3) PROPOSED PERFORATIONS OR SCREEN FROM 1 5 ~0" 25 FEET FROM .TO FEET FROM TO FEET PROPOSED SEALS/PLUG(S) ANNULAR: Pelletized Bentonite OTHER FROM FROM ] 3 TO TO 1 0 FEET FEET [SEE REvERS'E] .';' '~ ,.,~.~i,,,:.~.t:..~ , . .. .,. . ,;, . , . · ...'~7,~,l!',.;~x.~,;~:!.~.~;,;~,;:,'.;~ ,.~:~,¢?,~v?%,,..:,'.,....,....~; ~,., ..,.: ~, , · , .... :' .. : '~, ; ' ' 1..~,!~'~Permlt applications must be submitted to the Planning Depa~e~t~for. Zoning, access and flood plane clearances prior to '. :;;'.subm ssion, to the Health Department. .. :-.;?:~;~¢(~..;:;r;:,. ' .2. Permit applications must be submitted to the Health Department at.least 10 working days prior to the proposed starting date. 3." Well site approval Is required before beginning any work related.t~ well construction. It is ~lawful to continue work past the '": ': stage at which an' inspection is required unless inspection is~;.waived:or.,completed. ~ .... ' ' 4. :Other required inspections include: setting conductor casing;'E-Logs,'.all annular seals and final construction features. , ..~r,: ,,. : ' "" '"" ,* ;:~ :b'' ' "'" ""' '. ~'; "': · ' ' 5. '.':In areas where a well penetratesm~rethan~neaquifer~and~ne~rm~re~ftheaqu~fersc~ntainsp~~rqua~itywater~an E-L'°g .... ~shall be required to determine the location of the confining claylayer(s).:. ' 6. ' ~A phone call to the Depa~ment office is required on the morning of the day that work is to commence and 24 hours before the '.',placement of any seals or plugs ....... · ,,7, &>Approval of'water quahty and hnal construcbon features are.required before the well ~s put ~nto use, and before a Permit v,'.:xNumber s reeasedto Bud ng nspecton Servces .'.~.~.~:?;.~;,~'~,~r.' ~",:.,,r: . ' . ' '8'.: ::;"C0nstruction under this Permit is subject to any instructionS;,bY:Department representatives. "' .9.'.;.~;:Any misrepresentation or non-compliance with required Permit'Conditions, or Ordinance will result in issuance of a "Stop . . :.',...; .~,:~,.&....'. .... , '~ '.::,.Work Order.' .... .: ",".:r: ..;.,';,:...,.~,.r.,' ;.,.' , 10. "':'A Copy of the Department of water Resources Driller's Report as well as copies of E-Logs and water quality analyses must be 'submitted to the Health Depa~ment within 30 days after completion of the work. :6" 11. ,'."D~" holes must be properly destroyed within two (2) weeks of drilling; A well destruction application must be flied with this . '.Depadment. '...: .,,:. .. 12. The permit is void.on the ninetieth (90) calendar day after'date:of.issuance if. work has not been started and reasonable 'progress toward completion made. Fees are not refundable nor transferable. ' ' 13; ?he Job card shall be posted and remain at the well site:available for the inspector to sign it off. 14. Lead pipe shall not be used in construction of any private or public water supply system. 15. The use of solders containing more than 2/10 of 1% lead is prohibited in making joints and fittings in any private or public potable water system. 16. I have read and agree to comply with the General Conditions noted above. iOWNER'S SIGNATURE DATE ,, :i';,CONTRAC OR'S SIGNATURE .' ~.::¢..,.,7 .... ! ' ,','.,'. .' , - DATE . : i.I!!~... ". F'OR OFFICIAL. .USE: :ONL.Y,. : ZONING .t , KERN COUNTY HEALTH DEPARTMENT · ';':i!i' ~f'~ -- I ..'coNDITIONS OF PERMIT OR REASONS FO~DENIAL: ZONE ~ ACCESS APPROVAl.-: YES ~ NO [] E-LOG REQUIRED: YES L.~ NO LJ, J .oo DPL^"A.POVA R NO ~ GRAVEL CHUTE REQUmED: Y~S ~ 'NO ~ · ' - '~ ~U PAID ON . REASONS FOI;J DENIAL OR cor',JDITlO~lS: .." .. n t:,¢ o ~- ,,20 . ~, ,4 ,,. .? x,.f'~ ~,TOTAL '":';, RECEIPT ~'. CASH [] ' CHECK SEE ATTACHED CONDITIONS Healtt~'§80 4113 306 EH (Rev. 5/87} (Pg. 2 of 3) 17'00 Flower Street Baker{field, California 93305 Telephone (805) 861-3636 KERN COUNTY HEALTH DEPARTMEN Division of Environmental Health Well Permit Application HEALTH OFFICER L~on M Hebertson, M.D. DIRECTOR OF ENVIRONMENTAL HEALTH Varnon S. Reichard Parcel No. * LOCATION Assessor's Parcel No. INDICATE BELOW THE EXACT LOCATION OF WELL WITH RESPECT TO THE FOLLOWING ITEMS: PROPERTY LINES, WATER BODIES OR WATER COURSES, DRAINAGE PATTERN, ROADS, EXISTING WELLS, SEWERS AND PRIVATE SEWAGE DISPOSAL SYSTEMS. INCLUDE DIMENSIONS. ,.'.LAND. THE MEASUREMENT(S) SHOULD .FROM THE CENTER OF THE ROAD.' ALSO BE *.MADE{ Health 580 4113 306 EH (Rev. 5/87) (Pg. 3 of 3) One Mile I II1'--III SUBSURFACE CONTAMINATION ASSESSMENT DAVIES OIL COMPANY 3305 1/2 GULF STREET BAKERSFIELD, CALIFORNIA CLAIM NOS. 83Z-40, 83Z-9, 83Z-26 JULY 9, 1987 ~4231 87-533 July 9, 1987 662 O~O~WELL AVENUE ST. PAUL, MN 55114 PHONE 612/645-3601 Federated Insurance Company P.O. Box 586 Citrus Heights, California 95611 Attn: Mr. Joe Kessing Subj: Subsurface Contamination Assessment Davies Oil Company 3305 1/2 Gulf Street Bakersfield, California Claim Nos. 83Z-40, 83Z-9, 83Z-26 ¢4231 87-533 Dear Mr. Kessing: Enclosed is a copy assessment conducted referenced site. of our report regarding the subsurface contamination by Twin City Testing Corporation (TCT) at the It has been a pleasure to have served you on this project. If you have any questions regarding the contents of this report, or if you should require addi~'ional informa'tion, please contact either Ms. Teri Miller at (612) 649- 559.4, or Mr. Mark Mason at (612) 641-9372. Very truly.yours, Twin City Testing Corporation Mark S. Mason, Environmental G'eologis't Senior Project Manager MSM/sjo Encs cc: 1 - Kern County Health Department Attn: Ms. Amy Green 1 - California Regional Water Quality Control Board Attn: Mr. Tim Garrison i; [ EQU,~L ',po ]RTUNI F',' ~MF!.OYER TABLE OF CONTENTS Item 1.0 INTRODUCTION 2.0 3.0 1.1 Purpose and Scope 1.2 Site Location and Description BACKGROUND INFORMATION PROJECT RESULTS 3.1 Soil Conditions 3.1.1 Soil Boring Locations 3.1.2 Soil Description 3.1.3 Field Evaluation of Soils 3.1.4 Soil Sampling 3.1.5 Analytical Results 3.2' Ground Water Conditions 3.2.1 Monitoring Well Installation 3.2.2 GroUnd Water Elevations 3.2.3 Ground Water Sampling 4.0 DISCUSSION 4.1 Hydrogeology 4.2 Diesel Assessment 4.3 Gasoline Assessment 4.4 Water Supply Wells 5.0 CONCLUSIONS/RECOMMENDATIONS 5.1 Diesel Assessment 5.2 Gasoline Assessment 6.0 SYSTEM MONITORING 6.1 Monthly Monitoring 6.2 Quarterly Monitoring 7.0 METHODS AND PROCEDURES 7.1 Soil Sampling 7.2 Soil Screening 7.3 Soil Classification 7.4 Chemical Analysis~ Page 1 1 3 3 5 5 5 6 9 9 11 13 13 13 16 16 16 18 2O 22 24 24 24 28 28 28 29 29 29 29 30 TABLE OF CONTENTS (cont} Item 8.0 REMARKS LIST OF TABLES TABLE 1 - SUMMARY OF SOIL BORING DATA TABLE 2 - FIELD EVALUATION OF SOILS TABLE 3 - ANALYTICAL RESULTS OF SOIL SAMPLES TABLE 4 - WATER TABLE ELEVATIONS TABLE 5 - ANALYTICAL RESULTS OF GROUND WATER SAMPLES PaKe 30 8 10 12 14 17 LIST OF FIGURES FIGURE.1 - SITE LOCATION MAP FIGURE 2 - SITE MAP FIGURE 3 - WATER TABLE ELEVATIONS 5-8-87 FIGURE 4 - HYDROCARBON CONCENTRATIONS FIGURE 5 - WELL LOCATION MAP FIGURE 6 - PROPOSED RECOVERY WELL LOCATION FIGURE 7 - RECOVERY WELL DESIGN 4 7 15 21 23 25 27 LIST OF APPENDICES APPENDIX A - SOIL BORING LOGS APPENDIX B - MONITORING WELL CONSTRUCTION SHEETS APPENDIX C - CHEMISTRY RESULTS APPENDIX D - SIEVE ANALYSIS REMEDIAL ASSESSMENT PLAN DAVIES OIL COMPANY 3305 1/2 GULF STREET BAKERSFIELD, CALIFORNIA #4231 87-533 1.0 INTRODUCTION 1.1 Purpose and Scope Twin City Testing Corporation (TCT) initiated a hydrogeologic assessment of the Davies 0il Company Gasoline Station located at 3305 1/2 Gulf Street in Bakersfield, California in July of 1986. The assessment was in response to a release of approximately 2500 gallons of regular grade gasoline from a dispensing line. Specifically, this assessment was to estimate the vertical and horizontal extent of gasoline contamination resulting from the uncontrolled -loss of product. This report presents the findings and conclusions of this project. this assessment on March 24, Insurance Company. Twin City Testing was authorized to perform 1986 by Mr. Joseph Kessing of Federated The scope ~f work following items: for the gasoline loss assessment consisted -~of the 1. mobilizing a representative of TCT to the site on July 9, 1986, December 19, 1986 and May 5, 1987, Page 2-#4231 87-533 2. mobilizing a drill rig and crew to the site on July 9, 1986 and May .5, 1987, advancing four hollow stem auger borings..p~ly. 9, 1986 and completing the borings as monitoring wells MW-l, MW-2, MW-3 and MW-4, and advancing an additional boring on May 6, 1987 and completing the boring as MW-9, ., screening soil samples for the presence of hydrocarbon contamination by using both visual and olfactory evidence as criteria and an hNu Photionization Detector calibrated for direct reading in parts per milliom (ppm) benzene, analyzing four soil samples in July of 1986 and one sample in May of 1987 for the presence of Total Volatile Hydrocarbons (TVH) and benzene, toluene and xylene (BTX) compounds, 6. Obtaining water level measurements from the monitoring wells and collecting representative ground water-samples, and 7. analyzing the water samples for the presence of TVH, BTX, and Total Petroleum Hydrocarbons (TPH). In October of 1986, the scope of this project was expanded to assess the soil conditions adjacent to a diesel tank excavation. Specifically, the assessment was to determine i~ diesel fuel was present in the soils adjacent to the excavation. The additional work consisted of the following items: advancing four hollow stem auger borings, B-5 through B-8, and completing one boring as monitoring well MW'8 on May 6, 1987, screening soil s~mples for. the presence of hydrocarbon contamination by using both visual and olfactory evidence as criteria and the hNu Photoionization Detector, 3. analyzing six soil samples for TPH and BTX, -5. Page 3-#4231.87-533 collecting a representative ground water sample from MW-8 and analyzing the sample for TPH, TVH and BTX, and preparing a factual report presenting data, methodology, results, conclusions and recommendations in relation to the work performed on this project. 1.2 Site Location and Description The site shown in Figure 1. industrial purposes. the site. is located at 3305 1/2 Gulf The areas adjacent Street in Bakersfield California as to the site are primarily used for In addition a small mobil home park is located east of 2.0 BACKGROUND INFORMATION Based on inventory reconciliation, Davies Oil Company detected a losing trend in the regular gasoline pet.,roleum dispensing system during the winter of 1985. In response to this trend, Davies Oil Company pressure tested the tanks and lines. The results of these tests indicated leakage of the regular grade dispensing line. Subsequently, this line was repaired. Shortly thereafter, inventory reconciliation again indicated product losses. On March 3, 1986,_~he tanks and lines were again tested and a. leak was detected in the vapor lines. Repair was completed on this line and the Kern County Health Department (KCHD) was notified of the loss.. Davies Oil .t:l.Oll'! ell'k, testlnCl Pa( ~.31 87-.533 Primary Sch: o o Tank~ Sch : ~' I '? "~/ Bill Park ~ ,POUR ~,~ Hoapit, TWIN CITY TESTING SITE LOCATION MAP HYDROGEOLOGIC ASSESSMENT DAVIES OIL COMPANY BAKERSFIELD,CALIFORNIA :)ATE e/9187 IFIGURE 1~ PROJECT .f, 4231 87--533 REVIEWED BY: DRAWN BY: J.A.W. SCALE '1'= 2000' E~VzD-87-4 Page 5-#4231 87-533 Company estimated that 2,500 gallons of regular gasoline may have been lost at this site. In response 'to the suspected gasoline loss, TCT initiated this hydrogeologic assessment in July of 1986. In October, 1986, three 10,000 gallon underground tanks were removed from the Davies Oil Company facility because they were no longer in use. Accord- ing to KCHD, diesel ~uel was detected in soil samples obtained during the excavation. At that time, our project was expanded to include the assessment of the soil conditions adjacent to the tank excavation as itemized in Section 1.0. 3.0 PROJECT RESULTS 3.1 Soil Conditions 3.1.1 Soil Boring Locations Four hollow stem auger borings were advanced at the site on July 9, 1986 through July 11, 1986. Five additional .borings were advanced on May 5, 1987 and May 6, 1987. The methods used to advance the borings are described in Section 7.0 of this report. Page 6-#4231 87-533 The locations of the described as follows: borings are shown in Figure 2. The locations are B-1 was placed adjacent to the gasoline leak. B-3 was placed upgradient of the leak to establish background soil and ground water conditions.. B-2 and B-4 were placed to estimate the horizontal and vertical extent, of gasoline contamination. B-5, B-6, B-7 and B-8 were placed around the tank excavation to assess the soil for diesel contamination. In addition, B-8 was placed to assess the ground water conditions downgradient of the excavation. B-9 was advanced on a neighboring property down gradient of the gasoline leak to estimate the extent of gasoline contamination off site. A summary of the soil boring data is included on Table 1. 3.1.2 Soil Description The soils at the site consist of fine grained silty sand underlain by medium to coarse grained sand. The complete soil boring logs are attached as Appendix A. MEW_4 LAIM HUMBER 83Z-4G ·MW-1 PROPERTY LINE FENCE LOCATION PRODUCT & VAPOR/ (CLAIM NUMBER 83Z-9) MW-2 )DUCT & VAp°R· ·MW-3 OFFICE 'IBM OFFICE TRAILER 1 160' .¥ · MW-9 (CLAIM NUMBER 83Z-26) · FIGURE' 2 SITE MAP HYDROGEOLOGIC ASSESSMENT · DAVIES OIL COMPANY BAKERSFIELD,CALIFORNIA 4231 87-533 t. EGEND: I~ SOIL BORING/MONITORIt, IG WELL LOCATION · BOIL BORING. LOCATION {"~ PREV'IOUB BURIED TANI< LOCATION .... VAPOR LINE DISPEHCING LINE · BENCHMARK-SIDE NUT OF HYDRANT LOCATED ON GULF STREET Scale Feet TABLE 1 SUMMARY OF SOIL BORING DATA HYDROGEOLOGIC ASSESSMENT DAVIES OIL COMPANY BAKERSFIELD, CALIFORNIA ~4231 87-533 Pa~.~-~4231 87-533 BorinK Ground Depth of Elevation Monitoring Surface Boring at Total Well Elevation Below Grade Depth Installed B-1 98.61 31.5 67.11 Yes B-2 98.19 25.0 73.19 Yes B-3 99.10 25.0 74.10 Yes B-4 98.79 25.0 73.79 Yes B-5 99.11 17.5 81.61 No B-6 98.51 17.5 81.01 No B-7 98.59 17.5 81.09 No B-8 98.73 25.0 73.73 Yes B-9 97.41 17.5 79.91 NO Local Benchmark - Side nut of hydrant on Gulf Street = assumed elevation set at 100.00' Ail elevations referenced in feet. ,.~l. LIIn I:IN ~-Sl:lnc Page 9-~4231 87-533 3.1.3' Field Evaluation of Soils Ail soil samples were scan~ed in the field for hydrocarbon contamination using both visual and olfactory evidence as criteria. In addition, soil samples from B-5, B-6, B-7, B-8 and B-9 were screened with an hNu Photoionization Detector calibrated for direct reading in parts per million (ppm) of benzene. Contamination was not detected in B-4, B-6, B-7 or B-8. Gasoline odors were encountered in the soils at and above the water in B-I, B-2 and B-9. Odors ~were also encountered in B-3 and B-5 at the water table. In addition, contamination was detected in B-5 using the hNu with readings of 18 to 210 ppm. Results Of our field observations are listed in Table 2. Sampling intervals for the diesel fuel assessment are also listed. 3.1.4 Soil SamplinK Based on our field observations, 11 soil samples were selected for chemical analysis. Five of the samples were obtained from B-i, B-2, B-3, B-4 and B-9 as part of the gasoline loss assessment. Soil samples retrieved from beneath the water table in B-i, B-2, B-3 and B-4 were selected. A sample from B-9 above the water table, at 11.5' to 12.5', was also selected. The soil sample had a positive reading on the hNu of..6 ppm. The additional 6 Pa 0-~4251 87-533 TABLE 2 FIELD EVALUATION OF SOILS HYDROGEOLOGIC ASSESSMENT DAVIES OIL COMPANy BAKERSFIELD, CALIFORNIA ~4231 87-533 GASOLINE ASSESSMENT BorinK # Sample Depth B-1 7-0 - 9.0 15.0 - 17.0, B-2 11.0 - 12.0 13.0 - 13.5' B-3 13.5 - 14.0' B-4 13.5 - 14.0' B-9 11.5 - 12.5' 16.5 - 17.5 Observations Slight gasoline odor Gasoline present at water' table Slight gasoline odor Moderate gasoline odor at water table Slight gasoline odor at water table No odor Slight gasoline odor, .6 ppm hNu Moderate gasoline odor at water table, · 20 ppm hNu DIESEL ASSESSMENT Sample Depth 1.5 - 2.5 4.0 - 5.0 65- 7.5 9 0 - 10.0 11 5 - 12.5 14 0 - 15.0 i6 5 - 17.5 (WT) 24 0 - 25.0' B-5 Odor hNu N 0 N 0* S 80 S 80 S 105' S' 18 M 218' Boring Number and Observations B-6 B-7 B-8 Odor .hNu Odor hNu Odor hNu N 0 N 0 N 0 N 0 N 0 N 0 N- 0 N 0 N 0 N 0 N 0 N 0 N 0* N 0* N 0 N 0 N 0 N .8* N 0 NSC NSC N 0 Total Depth S - Septic' Odor N - No Odor M - Moderate Gasoline Odor (WT) - Water Table * - Selected fo,r Chemical Analysis NSC - No Sample Collected Page 11-~4231 87-533 samples were obtained from B-5, B-6, B-7 and B-8, to assess the soil for diesel contamination near the tank excavation area. Contamination was not detected in B-6 or B-7 during our field observations. However, soil samples from each boring were selected for chemical analysis to further verify that contamination was not present. A soil sample retrieved from B-8 at 14.0' to 15.0' had a. reading of .8 ppm on the hNu, therefore, the sample was selected for chemical analysis. Contamination was detected in B-5 from 6.5' to 17.5' using the hNu. Three soil samples were se'lected from this boring in order to quantify contaminant concentrations and to estimate the vertical extent of contamination. The samples that were selected for analysis are indicated in Table 2. 3.1.5 Analytical Results The gasoline analysis was performed by TCT. The samples were analyzed for the presence of total hydrocarbons as gasoline and BTX. The diesel analysis was performed by SMC Laboratory in Bakersfield, California and the samples were analyzed for TPH, TVH and BTX. The laboratory reports are. presented in Appendix B and a summary of the analyses are listed in Table 3. Contamina-. tion was detected in the soils in B-1 and B-5 at the water table. Contami- nation was not detected in the remaining samples. P~ 12-#4231 87-533 TABLE 3 ANALYTICAL RESULTS OF SOIL SAMPLES ' HYDROGEOLOGIC ASSESSMENT DAVIES OIL COMPANY BAKERSFIELD, CALIFORNIA ~4231 87-533 BorinK Sample Interval Date (Feet) Sampled B-1 15.0 - 17.0 7-09-86 TCT Gasoline B-2 13.0 - 13.5 7-10-86 TCT Gasoline B-3 13.5 - 14.0 7-10-86 TCT Gasoline B-4 13.5 - 14.0 7-11-86 TCT Gasoline B-5 4.0 - 5.0 5-05-87 SMC Diesel B-5 11.5 - 12.5 5-05-87 SMC Diesel B-5 16.5 - 17.5 5-05-87 SMC Diesel B-6 11.5 - 12.5 5-05-87 SMC Diesel B-7 11.5 - 12.5 5-05-87 · SMC Diesel B-8 14.0.,- 15.0 5-05-87 SMC Diesel B-9 11.5 - 12.5 5-06-87 SMC Diesel Detection Lab Assessment TPH TVH ~ ~ X Limit (ppm) - 750 3.3 30 130 .001 - ND ND ND ND .001 - ND ND ND ND .001 - ND ND ND ND .001 ND ND ND ND ND 1.000 ND ~ ND ND ND ND 1.000 1150 131 8.2 4.0 6.2 1.000 ND ND ND ND ND 1.000 ND ND ~D ND ND 1.000 ND ND ND ND ND 1.000 ND ND ND ND ND 1.000 - = Not analyzed for Diesel ND = Not detected Ail concentrations are reported in parts per million (ppm) mg/kg= ppm Page 13-~4231 87-533 3.2 Ground Water Conditions 3.2.1 MonitorinK Well Installation Ground water was encountered at a depth of approximately'16.5' below grade. Monitoring wells were installed in borings 1,2,3,4,8 and 9. The monitoring well locations are shown on Figure 2 and the rational for choosing these locations is outlined in Section 3.1.1 completed at depths of 25' to 30' stainless steel screens with PVC riser pipes. illustrated on Appendix B. of this report. The wells were below grade and are constructed of The construction details are the "Monitoring Well Installation" forms presented in 3.2.2 Ground Water Elevations Depth to ground water was measured in the monitoring wells and the data is reported in Table 4. Riser pipe elevations and ground surface elevations are also presented. The ground water flow direction appears to be toward the southwest. A water table contour map is included as Figure 3. cc]n:N:N-~cx~n 4-=~ol 8i-533 Page i' -"~ TABLE 4 WATER TABLE ELEVATIONS HYDROGEOLOGIC ASSESSMENT DAVIES OIL COMPANY BAKERSFIELD, CALIFORNIA #4231 87-533 Well Number Ground Riser Surface Elevationm Elevation Date MW-1 79.82 98.61 7-11=86 }~-1 79.82 98.61 12-19-86 MW-1 79.82 98.61 5-05-87 MW-1 79.82 98.61 5-08-87 MW-2 MW-2 MW-2 MW-2 MW-3 MW-3 MW-3 MW-3 MW-4 MW-4 MW-4 MW-4 99.82 98.19 7-11-86 99.82 98.19 12-19-86 99.82 98.19 5-05-87 99.82 98.19 5-08-87 100.92 99.10 7-11-86 100.92 99.10 12-19-86 100.92 99.10 5-05-87 100.92 99.10 5-08-87 100.20 98.79 7-11-86 100.20 98.79 12-19-86 100.20 98.79 5-05-87 100.20 98.79 5-08-87 100.16 98.73 5-08-87 Depth to Ground Water 14.86 15.25 18.21 18.23 15.02 15.37 17.71 17.87 15.37 15.79 18.21 18.34 15.06 15.38 17.84 17.87 18.00 Ground Water Elevation 84.96 84.57 81.61 81.59 84.80 84.45 82.11 81.95 85.55 85.13 82.71 82.58 85.14 84.82 82.36 82.33 82.16 97.20 97.41 5-08-87 15137 81.83 Local Benchmark - Side nut of hydrant on Gulf elevation set at 100.00' Ail elevations referenced in feet. Street assumed 82.33 MW-4 82.16 *l I iCLAIM NUMBER 83Z-40 82.5 LOCATION PRODUCT & VAPOR' 82.58 ~MW-3 PROPE ~MW-~ (81.59) ,DUCT · VAPOR' OFFICE LINE FENCE 82.0 (CLAIM IMBER 83Z-9) MW-2 81.95 OFFICE TRAILER Page 15-#4£31 87-533 t~ MW-9 81.83 (CLAIM NUMBER 83Z-26) ..... FIGURE 3 WATER TABLE ELEVATIONS MAY 8,1987 HYDROGEOLOGlC ASSESSMENT DAV!'.--S OIL COMPANY BAKERSFIELD,CALIFORNIA 4231 87-533 LEGEND: i) SOIL BORING/MONITORING.WELL LOCATION ~ SOIL BORING LOCATION ~ PREV'IOUS BURIED TANI,( LOCATION .... VAPOR LINE DISPENCINQ LINE ~ WAI~ER TABLE CONTOUR L~NE 0 Scare Fee t ': Page 16-~4231 87-533 3.2.3 Ground Water SamplinK Ground water samples were obtained from the monitoring wells and analyzed for TVH, BTX, and TPH. The laboratory reports are presented in ~and a summary of the results is presented in Table 5. Appendix C MW-1 contained analysis. in MW-2, ppb 3" of free product. A water sample was not obtained for The most recent analysis indicated that contamination is present MW-3, MW-4 and MW-9 at concentrations of 22 ppb at MW-4 to 33,400 total volatile hydrocarbons at MW-9. 4.0 DISCUSSION 4.1 HydroKeoloKy The soils encountered at the site are alluvial deposits consisting of fine grained silty sand and medium to coarse grained sand. Ground water is present within an unconfined aquifer 16.5' below grade. Water levels have dropped approximately 3' since this assessment began in July 1986. At that time, ground water was encountered at a depth of 13.5' below grade. Page 1 '231 87-533 TABLE 5 ANALYTICAL RESULTS OF GROUND WATER SAMPLES HYDROGEOLOGIC ASSESSMENT DAVIES OIL COMPANY BAKERSFIELD, CALIFORNIA #4231 87-533 Well Number Mw-2 Mw-2 MW-2 MW-3 MW-3 M'W-4 MW-4 MW-8 Date Sampled Lab. TV~ ~ ! ~ 7-11-86 TCT 11,000 400 310 550 12-19-86 TCT 930 9 120 330 5-06-87 SMC 4,100 89 ND 89 7-11-86 TCT 6,100 43 110 170 5-06-87 SMC 354 0.9 ND ND 7-11-86 TCT ND ND ND ND 5-05-87 SMC 22 1.8 7.6 4.2 5-08-87 SM¢ ND ND ND ND 5-08-87 SMC 33,400 1,155 3,810 15,380 TPH ND 6.2 ND ND ND Ail concentrations are reported in parts per billion (ppb). ugm/L = ppb ND = Not detected I:uJin L--]i~,~ Page 18-#4231 87-533 The site is situated between the Kern River and the Calloway'Canal. The hydrogeologic conditions at the site are influenced by these features. Ground water is recharged to the unconfined aquifer, through the Kern River Channel z. A ground water surface elevation map, prepared by the Kern County Water Agency indicates that mounding of water occurs along the Kern River. Ground water flow directions are along the southwest trending mound or toward the flanks of the mound2. Our water level measurements indicate a southwesterly flow across the site, as shown on Figure 3. Data obtained from MW-1 was 'not included in this interpretation, as free product was present in the well. 4.2 Diesel Assessment Based on laboratory results, the soils adjacent to the tank excavation have not been significantly contaminated as a result of leakage from the diesel tanks. Six soil samples were selected and analyzed for the presence of ZKern County Water Agency, May 1986, Water Supply Report: California, p. 36. Bakersfield, 2Kern County Wa%er Agency, 1986 Report on Water Conditions, Improvement District No. 4: Bakersfield California, Plate 5. Page 19-#4231 87-533 total petroleum hydrocarbons. Total petroleum hydrocarbons were only present in B-5 from 16~5' to 17.5' below grade at a concentration of 1150 ppm. This sample was obtained just below the water table. Contamination was not detected in additional samples obtained from B-6, B-7 or B-8. The lack of soil contamination above the water table at this location indicates that further leeching of diesel from the soils is unlikely. Laboratory detection limits of the TPH and BTX analyses of the soil samples were 100 ppm and 1 ppm, respectively. These detection limits were approved through phone conversations with the Kern County Health Department (KCHD). Readings of .8 to 210 ppm were observed on the hNu during field screening of the soil samples. These readings may represent interference due to gases released from nearby septic systems. Septic odors were encountered in B-5 as indicated in Table 2. observed on the hNu may not the soils. Therefore, we feel that all positive readings be indicative of hydrocarbon contamination in Contamination was not detected in the ground water sample obtained from MW-8. MW-8 is located downgradient of the tank excavation area. The sample was analyzed for TPH, TVH and BTX. Page 20-~4231 87-533 Gasoline Assessment Hydrocarbons were detected in the ground water at the site. Concentrations of benzene, toluene and xylene compounds and total volatile hydrocarbons were quantified 'and are ·depicted on Figure 4. In addition, 3 inches of free pr~oduct was observed in MW-1 on May 6, 1987. Contamination was not expecte~ contaminants were detected in series of pump islands. Ground in upgradient wells MW-3 or MW-4, however, both wells. MW-3 is located adjacent to a water contamination in this area may have resulted from past leakage or may be representative of the background water quality. Ground water obtained from MW-4 may also be indicative of background water quality, as the well is upgradient from any on-site source of contamination. The limits of the contaminant plume have not been identified at this time. TCT had proposed installing an additional well on a neighboring property to the soUthwest. This well was to be used to determine the ground water conditions downgradient of the site. TCT was·unable to secure permission to install the monitoring well on the property. TCT has requested assistance from the California Regional Water Q~ality Control Board (CRWQCB)'a~d from the KCHD to facilitate the right of entry documentation required to install an off-site monitoring well. ..CuJ~n clC11~ CeSCJI'K~ 22. - ! i ! CLAIM NUMBER 83Z-4( $~ED PROPERTY LINE FENCE ~MW-1 FREE PRODUCT e MW-9 1155 3810 !5,380 3,3,400 (CLAIM NUMBER 83Z-26) 0.9 ND LOCATION PRODUCT & VAP~R''v :IODUCT · VAPOR' ND 354. I~MW-3 OFFICE (CLAIM NUMBER 83Z-9) 89 ND 89 4100 OFFICE TRAILER MW-2 LEGEND: FIGURE 4 HYDROCARBON cONCENTRATIONS IN GROUND WATER MAY 1987 HYDROGEOLOGIC ASSESSMENT ' DAVIES OIL COMPANY BAKERSFIELD,CALIFORNIA 4.231 87-533 SOIL BORING/MONITORING'WELL LOCATION SOIL BORING LOCATION [""1 PREV'IO.US BURIED TANK LOCA-T]ON .... VAPOR LINE DISPENCING LINE ND NOT DETECTED CONCENTRATIONS REPORTED IN PPB Jl BENZENE XYLENE TOLUENE TOTAL VOLATILE HYDROCARBONS Page 22-#4231 87-533 4.4 Water Supply Wells The two primary aquifers in the Central'Valley, the unconfined and the confined aquifers, are sepa,rated regionally by Maps prepared by the Kern County Water Agency Clay pinches out west of the site but that a beneath the site and separates the 2 aquifers. the Corcoran Clay Member. indicate that the Corcoran 300' clay layer is present Kern County well records were reviewed to identify water supply wells near the site. The Study area is diagramed on Figure 5 and is bordered by Gulf Street, Standard Street, Brian Parkway and Arrow Street. Four wells, H-53, H-50, K-50 and Q-61 were identified which are currently in use. K-50 and Q- 61 are downgradient and sidegradient of the site. Q~61 is perforated at a depth of 300' and has a total depth of 499' We have not determined the aquifer from whic~ the well is pumping, as a well log was not available. It is our understanding that the well is used for agricultural purposes. The construction details and well log were not available for K-50. Page'.~L#4231 87-533 GULF GETTY 31LMORE AVE ROSEDALE HIGHWAY LEGEND: 0 WATER WELL LOCATIONS ~i~,INFERRED GROUND WATER FLOW DIRECTION GULF STREET /~H-53 TWIN CITY TESTING WELL LOCATION MAP HYDROGEOLOGIC ASSESSMENT DAVIES OIL COl BAKERSFIELD,CALIFORNIA DATE 6/9/87~F~IGURE 5 PROJECT ,~, '4231 87--533 REVIEWED BY: DRAWN BY: J.A.W: SCALE Page 24-4321 87-533 5.1 Diesel Assessment 5.0 CONCLUSIONS / RECOMMENDATIONS ~Based on laboratory results, the soils adjacent to the tank excavation area have not been significantly contaminated as a result of leakage from the diesel tanks. Since the tanks have been removed and contamination in the soils above the water table is below quantifiable of contaminants to the subsurface is unlikely. additional excavation of soils is not warranted in excavation pit be filled with clean soils. limits, further leeching It is our opinion that this area and that the 5.2 Gasoline Assessment Due to the levels of contamination present in the ground water it is our recommendation that a ground water remediation plan be implemented. We feei that a 12N well installed to a depth of approximately 36' may be sufficient to provide adequate gradient control to prohibit further off-site .contaminant migration. The proposed well location is indicated on Figure 6. The well should be installed in a minimum 20M borehole to allow for 4" gravel pack annulus. TCT recommends that the well be screened from approxi- MW-4 I I [CLAIM NUMBER IMW-1 PROPERTY LINE FENCE LOCATION PRODUCT & VAPOR~ (CLAIM NUMBER 83Z-9) MW-2 ,DUCT · VAPOR' ~I~M W- 3 OFFICE OFFICE TRAILER ~1~ MW-9 (CLAIM NUMBER 83Z-26) _FIGURE'6 PROPOSED RECOVERY WELL LOCATION HYDROGEOLOGIC ASSESSMENT ' DAVIES OIL COMPANY BAKERSFIELD,CALIFORNIA 4231 87-533 LEGEND: ~ BOIL BORING/MONITOI:~II'{G WELL LOCATION · SOIL BQRING LOCATION -~ PROPOSED RECOVERY WELL LOCATION ['2 PREV'IOJJS BURIED TANK LOCATION .... VAPOR ~'INE DISPENCING LINE 0 Scale Fee: Page 26-~4231 87-533 mately 16' to 36' below grade. Screening the well through this interval will provide an approximate 20' water column at prepumping conditions. Based on grain size analysis of a soil sample collected near the screened interval (Appendix D), TCT recommends the use of a ~10 'slot galvanized screen. The screen should be gravel packed with a nongraded medium grained sand. A conceptual design for the recovery well is presented in Figure 7. Upon completion of the well installation, the well will be pumped to determine well yield and aquifer characteristics. After this data is available, pump sizing will be completed and an additional recovery well site will be selected if one gasoline recovery gradient control well is not adequate to prohibit further off-site contaminant migration. The withdrawal system may employ two pumps. If so, we propose to dispose of ail clean water from the depression pump to the local storm or sanitary sewer system. Our low Water Shut-off probe will be set at 7' above the pump intake to ensure that a 7' minimum buffer zone will be maintained between the depression pump intake and the gasoline/water interface. Follow-up sampling of recovery well discharge water will be required t° document discharge water quality. Specific discharge water quality requirements will be discussed with the local regulatory agencies. .CuJ~l c~C~ C~sC]nc~ Pa( FIGURE 7 RECOVERY WELL DESIGN DAVIES OIL COMPANY BAKERSFIELD,CALIFORNIA 4231 87-533 -#42~1 87-533 14~' ANNULES Page 28-#4231 87-533 6.0 SYSTEM MONITORING 6.1 Monthly Monitoring Initially, we recommend weekly discharge water quality monitoringl There- after, monthly sampling of the recovery well discharge water, and recording water and product levels in all Pump flow rate and explosive gas sewer will also be monitored. existing monitoring wells is recommended. concentrations in the storm or sanitary 6.2 Quarterly Monitoring Quarterly monitoring will include all tasks listed in Section 6.1 plus drafting a quarterly site progress report consisting of the data generated during the monitoring quarter. Water quality samples from the monitoring wells will be collected to document ground water restoration. This sampling will be completed as'deemed necessary by the local regulatory agency. Page 29-#4231 87-533 7.0 METHODS AND PROCEDURES 7.1 Soil Sampling Intact soil samples were collected at 2 1/2' intervals by driving a sampler equipped with stainless steel liners. The samples were capped with aluminum foil, then with pressure fitted plastic caps and then sealed with adhesive tape. Each of the samples were labeled with an adhesive-backed label including boring designation, depth of sample, and initials of the individual preparing the sample. 7.2 Soil Screening Soils were scanned with an .hNu Model 101 photoionization detector equipped with an 11.7 eV lamp and calibrated for direct reading in ppm of benzene. Fresh soil surfaces were exposed and the hNu probe immediately placed within 1" to 2" of the soil'surface. 7.3 Soil Classification As the samples were obtained in the field, they were visually 'and manually classified by the crew chief in accordance with. ASTM: D 2488-84. Representative portions of the samples were then returned to the laboratory Page 30-~4231 87-533 for further examination and for verification of the field classification. Logs of the borings indicating the depth and identification of the various strata, the N value, water level information and pertinent information regarding the method' of maintaining and advancing the drill holes are attached. Charts illustrating the soil classification procedure, the descriptive terminology and symbols used on the boring logs are also attached. 7.4 Chemical Analysis Laboratory testing was performed by TCT in St. Paul, Minnesota and SMC Laboratory in Bakersfield, California. The soil and ground water samples for the gasoline assessment were tested for the presence of total volatile hydrocarbons and benzene, toluene and xylene compounds. The samples for the diesel assessment were additionally analyzed for the presence of total petroleum hydrocarbons. 8.0 REMARKS The recommendations contained in this report represent our professional opinions. These opinions .were arrived~ at in accordance with currently accepted hydrogeologic and engineering practices at this time and location. Other than this, no warranty is implied or intended. Page 31-#4231 87-533 This report was prepared by: Teri Miller Geologist Date: July 9, 1987 This report was reviewed by: Mark S. Mason~ Environmental Geologist Senior Project Manager Brian Krogsen~/ P.~. ~ Registered Geologist ~2303 Date:.July 9, 1987 Proofread by: APPENDIX A SOIL BORING LOGS '~' LOG OF TEST BORING JoB NO. 4231 87-533 VERTICAL SCALE, 1" = 4 'BORING NO. B-1 PROJECT Davies Oil Company; Bakersfield, California DEiPNTH DESCRIPTION O_F .MATERIAL SAMPLE PETROLEUM PRODUCT FEET ~SURFACE ELEVATION (~. ~1 I GEOLOGIC ORIGIN N WL NO iTYPE OBSERVATIONS SILT, brown, moist (ML) FINE ALLUVIUM 1 SB* 2 SB* 5 SAND, fine to meidum grained, COARSE 3 SB* light brown, dry (SP) ALLUVIUM 7.4 SANDY SILT,. brownish gray, moistM FINE 4 SB~ 8.3 -...L) a, LLUVIUM SAND, fine to medium grained, COARSE brown, dry to about 15' then ALLUVIUM - waterbearing (SP). 5 SB~ 6 SBT 7 SB~ NSR 25 ~ i Continued on next page ~'-~ LOG OF TEST BORING-'~1~ l" = 4' B-i (Cont.) JOB NO. 4231 87-533 VERTICAL SCALE. OORING NO. PROJECT Davi.e.s_.0i~l.~om.p_~ny_:_ Bakersfi..eld, California DEPTH DESCRIPTION OF MATERIAL SAMPLE IN GEOLOGIC PETROLEUM PRODUC"F FEET ORIGIN N WL NO. TYPE OBSERVATIONS 25 SAND W/SILT AND A LITTLE GRAVEL, fine COARSE 8 SB~ to medium grained, a few cobbles, ALLUVIUM grayish brown, waterbearing (SP-SM) (Cont) ' 9 SB~ 31½ End of Boring *Modified California split barrel sampler. WATER LEVEL MEASUREMENTS START 7-9-86 COMPS. LTL 7--9--86 SAMPLED CASING CAVE-IN WATER I O^TE TIME OE.'rH , oE.m DE.TH 8A,~ED~E.THS ~EVEL ~.T.OD HSA 0'-30' @ 4:10 7-9 10:30 17' 15' ,o 15'+ 7-9 4:10 31½' None ,o NMR ,o CREw CH,E~ Kr~gseng V~ LOG OF TEST BORING~ 1" = JOe NO 4231 87-5~3 VERTICAL SCALE 8OR,NC~ NO. B-2 PAOJECT -Davies -0il. C'ompany; Bakers,field.. California DEPTH DESCRIPTION OF MATERIAL SAMPLE GEOLOGIC PETROLEUM PRODUCT IN FEET i~SURFACE ELEVATION 98, 1 (~ ' ORIGIN N WL N~) TYPE OBSERVATIONS SILT, grayish brown, dry (ML) FINE 1 SB* ALLUVIUM 2 SB* 5 SAND W/SILT, fine to medium grained, COARSE 3 SB* brown to light, tan, moist (SP-SM) ALLUVIUM 7 SAND, fine to medium grained, light brown, moist (SP) _ 4 SB~ 14 SAND, medium to fine grained, _ - brown, wet. to waterbearing (SP) 5 SB~ 25_ .... End of Boring *Modified California split barrel 'sampler. WATER LEVEL MEASUREMENTS START 7-10-86 COM.~ET~ 7,'-10-86 SAMPLED I CASING CAVE-IN WATER DATE T~ME DEPTH DEPTH DEPTH BAtLEDOEPTHS LEVEL ~.ET~OD HSA 0'-25' @ 10:30 7-10 10:30 25' ,o NMR ~o c. Ew CH,E. Krocj Sen cJ ~-- LOG OF TEST BORING-~~ JOBNO.. 4231 87-533 VERTICAL SCALE 1" = 4 'aOR,N¢~NO B-3 PROJECT, Davies Oil Company: Bakersfield. California DEPTH DESCRIPTION OF MATERIAL SAMPLE GEOLOGIC PETROLEUM PRODUCT FEET ~F~SURFACE ELEVATION 9(~ ..1 [~ I ORIGIN N WL NO. TYPE OBSERVATIONS SANDY SILT, grayish brown, FINE dry (ML) ALLUVIUM 1 SB' 3½ SAND W/SILT, fine to medium grained, 2 S'B tan, dry (SP-SM) COARSE - ALLUVIUM 7 - SAND, medium grained, light 3 SB~ brown, moist (SP) 15 - SAND, medium grai'ned, gray, wet to waterbearing (SP) 4 SB, 25 End of Boring *Modified California split barrel sampl er. WATER LEVEL MEASUREMENTS START 7--'10--86 COUPLETE 7--10--86 SAMPLED CASING CAVE-IN WATER ~ ~ 00 DATE TIME DE.T. DE"T. DEPT'" .A,~ED~EPT,~S LEVEL .~E'~HOD HSA 0'--25' 17-10 2:00 25' ,o NMR ,o Ic,Ewc.,~ Krogseng -e w LOG OF TEST ~ JOBNO 4231 87-53'3 VI:::RTICALSCALE 1" : 4 '80,"'NC~NO B-4 PROJECT Davies 0il Company; Bakersfield, Calif'ornia DEPTHI DESCRIPTION OF MATERIAL SAMPLE GEOLOGIC PETROLEUM PRODUCT IN FEET i~'SURFACE ELEVATION - 98.79 ' ORIGIN N WL NO TYPE OBSERVATIONS SANDY SILT, brown, moist to dry FINE (ML) ALLUVIUM 1 SB* 7½ ' 2 SB* SILTY SAND,' fine grained, brown, COARSE dry to moist (SM) ALLUVIUM 14½ ~ SAND W/SILT, medium to fine - grained, brown wet to water-(SP-SM) 3 SB* bearing 25 End of Boring -,*Modified Califor.nia split barrel .sampler. WATER LEVEL MEASUREMENTS START 7--11 --86 CO'~RLETE 7--11 --86 SA~P, EOI CAS,NC CAVE-,- WATER HSA 0'-25' I@ 9:15 DATE TIME DEPTH DEPTH DEPTH BAILED DEPTHS LEVEL METHOD 7-11 9'15 25' ,o NMR ,o ~CREw CH,E, Kroqsenq SE-V-20(8.~ - A.~-.', · DATE: S-5-87 LOG DESIGNATION LOGGED BY: KC ELEVATION: WATER LEVEL:16.5 ft. JOB: B870E EQUIPMENT' Mobile B-50, 8" hollow stem auger FIGURE: ~ z o~ ~ ~ ' ~ ~ ~ ~ ~ ~ SOIL OR R~K DESCRIPTION NOTES ~ Z~ ~ damp; med±um de~se; m±caceous. 2.~ 5-- 2.5 S~ SAND: o~±ve gray to ~±ghc o~±ve gray; ~±~e to coarse; damp Co mo±sc; med±um de~se; m~caceoos. 2.5 IO - 2.3 [0 Ho±sc at [0'. 2.5 20 S~ SA_ND: 1±ghC ol±ve g:a¥; med±um Co coarse; ~et; med±um de~se; m±caceo~s; ~±th some s±it~ sa~d/silc a~d g~avel le~ses. 15 - 2.~ 23 2.~ 32 Te~m±~a~ed ac 20- ~25 THE LOGS SHOW SUBSURFACE CONDITIONS AT THE DATES AND LOCATIONS INDICATED, AND IT IS NOT WARRANTED THAT THEY ARE REPRESENTATIVE DATE 5-5-87' LOGGED BY: I~.C ELEVATION: WATER LEVEL:16.3 ft. LOG DESIGNATION B87 JOB: EQUIPMENT' Mobile B-50, 8" hollow stem auger FIGURE: ~ ~ ~ SO~L OR R~ DESCR)PT~ON NOTES SP S~: light yellowish bro~; fine; damp; .- medium dense; micaceous. 2.5 15 SM SILTY S~D: light yellowish bro~; fine; damp; medium dense; ~caceous. 5- 2.~ 19 SP S~D: pale olive to light yellowish bro~; f~e to coarse; damp to moist; medium dense. 2.5 17 IO- 2.5 18 2.5 26 ff Sand grades to coarse with ~nor gravel. 15-- 2.~ 27 SP S~D: ~Sgh~ yeZ~owSsh bro~; coarse 2.5 32 some gravel;, wee; dense. BorSng Term~natec at 17.5~ 25 THE LOGS SHOW SUBSURFACE CONDITIONS AT THE DATES AND LOCATIONS INDICATED, AND IT IS NOT w~RANTEC THAT THE~ ARE REP~ESENTATIVE OF SU~S~C~ CO,~J01TIONS AT OTHER LOCATIONS { DA' E' 5-5-87 LOG DESIGNATION LOGGED BY:~.C ELEVATION: WATER LEVEL:16.0 f~:- JOB: B870; EQUIPMENT' Mobile B-50, 8" hollow stem auger FIGURE: 3:' z "' u., ~ ~ ~ ~ SOIL' OR 'ROCK DESCRIPTION NOTES SP SAND: light yellowish brown; fine; damp; medium dense; micaceous. , 2.5 15 SM SILTY SAND: pale olive; fine; damp; medium dense; micaceous. 5-- 2.5 14 ' SP SAND: light olive brown to light yellowish 2.5 17 brown; fine to coarse; damp to moist; medium dense; micaceous. 2.5 24 Some thin silty sand lenses noted at 12'.. 2.5 22 2.5 29 Boring Terminated at 17.5' 20. 25 THE LOGS SHOW SUBSURFACE CONDITIONS AT '[HE DATES AND LOCATIONS INDICATED, AND IT IS NOT wARRANTEG THAT THEY ARE REPRESENTATIVE OF SUBSUPFfiCE COF, J~TIOFJ$' AT OTHER L_OCATIONS DATE: 5-5-87' ..OGGEOB',': LOG DESIGNATION ELEVATION ' WATER LEVEL:15.0 ,ft. JOB' '1:{87 EQUIPMENT' Mobile B-50, 8" hollow stem auger FIGURE: 5 SP S~: light yeiiowish bro~; fine; moist; micaceous. 2.5 15 SM SILTY S~D: dark yellowish bro~; fine; - moist; medium dense; ~c'aceous. 5-- 2.5 19 2.5 20 SP S~D: light yellow bro~ ro dark yellowish bro~; fine to medihm with some silt; ~O- moist; medium dense; micaceous. 2.5 21 2.5 20 SP S~D: olive to light yellowish bro~; 15-- medium to coarse; wet; loose; ~caceous. 2.5 8 20- Some gravel lenses noted at 20'. Boring Terminat e.~ 25 at 25 ' THE LOGS SHOW SUBSURFACE CONDITIONS AT THE DATES AND LOC~TIONS INDICATED, AND tT (2 I ~40~ M,',a',,'ER-3,O ~CM O~O~'. ~..~- iS NOT WARR~NTEG THAT THEY ARE REPRESENTATIVE OF SUgSURFACE CONOtTIONS AT OT~ER LOCATIONS DATE: 5-5-87.. LOG DESIGNATION LOGGED BY; KC ELEVATION · WATER LEVEL:16.5 ft. JOB: B87088 EQUIPMENT: Mobile B-50, 8" hollow stem auger FIGURE: I-- ~: ~ SOIL OR ROCK DESCRIPTION NOT[S SM SILTY SAND: .dark grayish brown; fine to coarse; damp; medium dense, 22.5 16 SP S~: ~ght yeliow~sh bro~ ~o l~ghr - bro~; damp; medium dense; ~caceous, 5 ~ 2.5 15 2,5 16 2.5 17 SP S~D: very pale bro~ to olive gray; 2,5 21 coarse; damp to moist; medium dense; - micaceous; interbedded wi~h thin silty sand lenses, ~5-- 2.~ 24 SP S~D: olive gray; fine to coarse; wet; 2.5 20 medium dense; ~caceous; interbedded with thin silty sand lenses, Boring .~ Terminated 25 at 25 ' THE L.OGS SHOW SUBSURFACE CONDITIONS AT THE DATES AND LOCATIONS INDICATED, AND IT I ~ ) 14olb~ '.&IiIWER- ~ INCM 0.O~. ~(V IS NOT WARRANTE~ THAT THEY ARE REPRESENTATIVE ' OF SUBSURFACE CONDITIONS AT OTHER LOCATIONS APPENDIX B MONITORING WELL CONSTRUCTION SHEETS IDB NO. 4231 87-533 INSTALLATION OF MONITORING '~,'EL MONITORING WELL NO. MN- 1 Davies 0il Companv: BakersfiEld_ (ialit~nrni~_ TOP. CLF RISER PIJ~E £LEVATION , (with cap removed) NTED CAP riVE CASING Total Length Len~h Above Ground GROUND SURFACE ELEVATION" 98.61 ' L] AND TYPEOFSEAL gg.R?' 6" I.D. steel 5' 1.2' 5' cement grout DIAMETER AND TYPE OF RISER PIPE 2" PVC L2 I TYPE OF BACKFILL AROUND RISER Sand Li= 1.2 FT L2= 1 fl. ? Fi' L3= 15.8 F-r L4= '30.0 Fi' I-3 INSTALLATION COMPLETED: Date 7-9-86 Time 4' t0 AND TYPE OF SEAL DEPTH TO,TOP OF FILTER SAND .- TYPE OF FILTER AROUND SCREE. N' TYPE OF MONITORING WELL ££N GAU~£ OR SIZE OF OPEaINGS (SLOT NO.) AND LENGTH OF SCREEN DEPTH TO BOTTOM OF MONITORING WELL TO BO'II'OM OF FILTER SAND AND TYPEOFSEAL Sand Stainless · 020" 2" x 15.8' 25.0' None DIAMETER OF BOREHOLE MONITORING WELL WATER LEVEL MEASUREMENTS DATE TIME j BAILED DEPTHS ! WATERLEVEL 7-10-86 4:03j J 14.82' 7-11-86 11:40 t t 14.86' t ' DEPTH BELOW TOP'OF RISER PiPE t:LUln Cll::~e~ t:EsCInCi corporat:lon ~0~ NO. 4231 87-533- I NSTALLATION OF MONITORING WELL MONITORING WELL NO. Davies 0il Companyq Bakersfield. TOP. C2F RISER 'PIPE ELEVATION (with cap removed) NTED CAP I PROTECTIVE CASING Diameter and Type To~I Length Len~h Above Ground .... :SS AND TYPE OF SEAL GROUND SURFACE ELEVATION" 9~. 1 DIAMETER AND TYPE OF RISER PIPE Califnrnia 99.82' 6" I.D. steel 5' 1.6' 5.3' cement grout 2" PVC 12 ' L3 TYPE OF BACKFILL AROUND RISER AND TYPE OFSEAL DEPTH TO TOP OF FILTER SAND TYPE OF FILTER AROUND SCREEN' MONITORING WELL [EN GAUGE OR SIZE OF OPENINGS (SLOT NO.) AND LENGTH OF SCREEN DEPTH TO Bo'ri'OM OF MONITORING WELL BOq-lrOM OF FILTER SAND Cement qrout 1' bentonite pellets 6.3' Sand Stainless .020" 2" x 15.8' 24.3' 6" Li= 1 ,fi' F'r L2= 10.2 Fr L3= 15.8 FT L4= 25.0 FT INSTALLATION COMPLETED: Date 7-10-8fi Time 11:10 L, I- S AND TYPE OF SEAL DIAMETER OF BOREHOLE MONITORINGWELLWATER LEVEL MEASUREMENTS :' DATE TIMEt BAILED DEPTHS t WATERLEVEL 7-10-86 3:55 I I 15.09' 7-11-86 111:35 ! t 15.02' i I , DEPTH BELOW TOP OF RISER PIPE I:udln Clt:V t::est:lncl corDor-~clon JOB NO. 4231 87-5~3 GROUND SURFACE ELEVATION" NSTALLATION OF MONITORING MONITORING WELL NO. ~W-3 Davies 0il Company; Bakersfield, California TOP. Q.F RISER 'PIPE ELEVATION 100.92' (with cap removed) NTED CAP I PROTECTIVE CASING Diameter and Type 6" I.D. steel TmIII LemIzh 5 i 1.8' . - Lem~h A~ Ground 5.2' concrete 'raCiNESS ANO TYe~ OF I-I 99.10' DIAMETER AND TYPE OF RISER PIPE 2" PVC L2 L3 TYPE OF BACKFILL AROUND RISER AND TYPE OFSEAL Cement DEPTH TO TOP OF FILTER SAND Sand I TYPE OF FILTER AROUND 'SCREEN' MONITORING WELL Stai nl ess EN GAUGE OR SIZE OF OPENINGS {SLOT NO.) .020" 2" x 15.8' AMETER AND LENGTH OF SCREEN 24.2' 1' bentonite pellets 6.2' DEPTH TO BOTTOM OF MONITORING WELL BOTTOM OF FILTER SAND Li= 1.8 FT L2= 10.2 FT L3= 15,8 Iq' L4= 25.0 FT INSTALLATION COMPLETED: Date 7=10-86 Time 2:20 L i- AND TYPE OF SEAL _1 -I DIAMETER OF BOREHOLE Il .MONITORING WELL WATER LEVEL MEASUREMENTS DATE TIME BAILED DEPTHS I WATERLEVEL 7-10-86 4:00 t15.33' 7-11-86 11:30 t15.37' I DEPTH BELOW TOP OF RISER PIPE t:l. uln Clt:V :eSt:lDO corporal:Ion I NO. 4231 87-533 GROUND SURF ACE EL*£VATION L] St 98.79'. *NSTALLATION OF MONITORING WELLi MW-4 IIK)NITORING WELL NO. Davies Oil Company; Bakersfield, California .'~.OI'OF RISER PIPE ELEVATION = (with cap rtmovtd) CAP OTEL'rlVt ¢&SING Tm~l A~ow Gm~d 1 nn ?P..' AND TYPE OF SEAL 6" 'Steel 1..14I 5.7' Cement Grout [TER AND TYPE OF RISER PIPE L2 L3 I i~ TYP£ OF IACKIrlLL AROUND RISER AND TYPE OF SEAL Cement Grout 1' Bentonite Pell 6.7' DEPTH TO TOP OF FILTER SAND Sand oF FILTER AROUND SCREEN ,. Stainless TYPE OF MONITORING WELL , SCREEN GAUGE OR SIZE O~ MENINGS .020" (~LOT NO.) mini i 2. x 15.8' AND LENGTH OF SCREEN ,, DEPTH TO BOTTOM OF MONITORING WELL BOTTOM OF FILTER SAND ESS AND TYP£ OF SEAL 24.6' ,1 Li. · 1 . 4 FT L2. 10.2 L3. 1 5.8 25.0 L4' , INSTALLATION COMPLETED: 7-11-86 :00 DaTe Time JJ tS'I4j/I---- I)IAIdETER OF IOK£HOkE MONITORING WELL WATER LEVEL MEASUREMENTS DATE TIME BAILED DEPTHS ~ WATER LEVEL DEPTH BELOW' TOP OF RISER PIPE NO. 4231 87-533 GROUND SURFACE ELEVATION' ]..1 ,I ]-2 L3 iNSTALLATION OF MONITORING WELL MONITORING WELL NO. 98.7 .i TOE CIE RISER 'PIPE E'LEVATION (with cap removed) NTED CAP LOTECTIVE CASING Diameter and Type Total Lenlth L,*n~th Abo~ Ground 'HICKNESS AND TYPE OF SEAL DIAMETER AND TYPE OF RISER PIPE ~lflfl,lfi 6" Steel 4' 5.5' cement grout 2" PVC Sch 40 TYPE OF BACKFILL AROUND RISER ESS AND TYPE OF SEAL cement ,qrout .. 2' bentonite DEPTH TO TOP OF FILTER SAND ,- TYPE OF FILTER AROUND SCREEN MONITORING WELL GAUGE OR SiZE OF OPENINGS (SLOT NO.) AND LENGTH OF sCREEN birdseye gravel pack 0.02" 2"x 15' DEPTH TO BO'II'OM OF MONITORING WELL BOq'I'OM OF FILTER SAND LI= 1.46 ,Fl' L2= 19 FI' L3= 15 FT L4= 23.5 FT INSTALLATION COMPLETED: Date 5-6-87 Time 11: b ESS AND TYPE OF SEAL DIAMETER OFBOREHOLE 11 · MONITORING WELL WATER LEVEL MEASUREMENT5 DATE TIME BAILED DEPTHS I WATERLEVELw DEPTH BELOW TOP OF RISER PIPE -'-~ t:t.uln CII::~ cof1:~or-~l:lOn JOB NO. 4231 87-533 ~LLATION OF MONITORING MONITORING WELL NO. MW-9 ~RKER HEIGHT GROUND SURFACE ELEVATION c)7-4 TOP OF RISER ELEVATION (With Cap Removed) -- 0TECTIVE CASi.G CAP Diameter And Type ~ Depth Diameter and Type Total Length 12" Steel 6" Steel 3' Cement/ Bentonite 97.20 I ! I m L4 Li= 2.4 FT L2= 1 1.0 F'l' L3= 15.0 FT L4= 26.2 FT INSTALLATION COMPLETED: Date Time AND TYPE OF SEAL Grout Mixture to Surface DIAMETER AND TYPE OF RISER PIPE 2" Flush Thread PVC TYPE OF BACKFILL AROUND RISER THICKNESS AND TYPE OF SEAL DEPTH TO TOP OF FILTER SAND TYPE OF FILTER AROUND SCREEN TYPE OF MONITORING WELL SCREEN GAUGE OR SIZE OF OPENINGS (SLOT NO.) DIAMETER AND LENGTH OF SCREEN DEPTH TO BOTTOM OF MONITORING WELL ~DEPTH TO BOTTOM OF FILTER SAND --THICKNESS AND TYPE OF SEAL Cement Grout 2.5'Bentonite Pellets 8' birdseye gravel stainless O. 020" 2Iix 15.0' 26.2' 26.5' N/A DIAMETER OF BOREHOLE 8" MONITORING WELL WATER LEVEL MEASUREMENTS DATE WATER LEVEL ( i )10BSERVATIOiiS TIME 1 .I ( 1 ) DEPTH BELOW TOP OF RISER PIPE APPENDIX C CHEMISTRY RESULTS SMG Laboratory Analytical Chemistry 3155 Pegasus Drive P.O. Box 80835 Bakersfield, CA 93380 (805) 393-3597 Client Name: Twin City Testing Corporation Address : 662 Cromwell Avenue St. Paul, MN 55114 Date sample recieved : 5-8-87 Date analysis completed: 5-13-87 Date of report : 5-18-87 Laboratory No. 392 through 399 RESULTS OF ANALYSIS #392 ID: B5 @ 5.0 Benzene TPH (dissel) #393 ID: B5 @ 12.5 Benzene TPH (diesel) Location: Davies Oil Company W.0.#4231 87-533 Bakersfield ppm MRL,ppm Method of Analysis: EPA 5020/FID · I i TPH = Total Petroleum Hydrocarbons ~100 100 MRL = Minimum Reporting Level ppm MRL,ppm Method of Analysis: EPA 5020/FID ~ 1 I TPH = Total Petroleum Hydrocarbons · 100 100 MRL = Minimum Reporting Level #39 #395 ID: B5 ~ 17.5 Benzene TPH (diesel) ID: B6 ~ 12.5 Benzene TPH (diesel) ppmMRL_~L,~ Method of Analysis: EPA 5020/FID ~ 1 i TPH = Total Petroleum Hydrocarbons · 100 100 MRL = Minimum Reporting Level ppm ~MRL,ppm Method of Analysis: EPA 5020/FID · 1 i TPH = Total Petroleum Hydrocarbons -100 100 MRL = Minimum Reporting Level #396 ID: B7 ~ 12.5 Benzene TPH (diesel) ppm ~ Method of Analysis: EPA 5020/FID · i I TPH = Total Petroleum Hydrocarbons 100 100 MRL = Minimum Reporting Level #397 ID.: B8 @ 12.5 Cancel #398 ID: B8 @ 15.0 Benzene TPH (diesel) ppm MRL,ppm Method of Analysis: EPA 5020/FID ~ i I TPH = Total Petroleum Hydrocarbons -100 100 MRL = Minimum Reporting Level #399 ID: B9 @ 12.5 Benzene TPH (diesel) ppm MRL,ppm Method of Analysis: EPA 5020/FID ~ 1 I TPH = Total Petroleum Hydrocarbons -100 i00 MRL = Minimum Reporting Level Stan Comer Analytical. Chemistry 3155 Pe~aaus Drive P.O. Box 80835 Bakersfield, CA 93380 ( o5) 393-3599 Report off L&bor&tory Analye£a Client Name; Twin City Testing Corporation Address , 662 Cromwell Avenue St. Paul, MN 55114 Date sample received : 5-8-87 Date ana~ysls completed: 5-12-87 Date of report ~ 5-18-87 Laboratory No.392 through 399 Location: Davies Oil Company W.0.#4231 87-533 Bakersfield R~SULTS OF ANALYSIS #392 ID, B5 Benzene Toluene EthylBenzene p-Xylene m-Xylene o-Xylene Isopropylbenzene TVH MRL,ppm Method of Analysis: EPA 5020/8020 1.0 TVH = Total Volatile Hydrocarbons 1.0 MRL'= Minimum Reporting 'Level 1.0 1.0 1.0 1.0 1.0 #393 ID, B5 @ 12.5 Benzene Toluene Ethylbenzene p-×ylene m-×ylene 0-Xylene I sopr opylbenzene TVH #394 ID: B5@ 17.5 Benzene Toluene Ethylbenzene p-Xylene m-Xylene o-Xylene I sopropylbenzene ppm .MR.L,ppm Method of Analysis: EPA 5020/8020 · 1 1.0 TVH = Total Volatile Hydrocarbons 1.0 1.0 1.0 1.0 1.0 1,0 1.0 MRL = Minimum Reporting Level .~ MRL, ppm 1.0 ~.0 1.0 1.3 1.O -1.0 1.0 6.2 1.O 41.0 1.0 ~-1.0 1.0 131 1.0 Method of Analysis: EPA 5020/8020 TVH = Total Volatile Hydrocarbons MRL = Minimum Reporting Level Stan Comer SMC LABORATORY Analytical Chemistry 3155 Pegasus Drive P.O. Box 80835 Bakersfield, CA 93380 (805) 3 3-3597 Report of Laboratory Analysis #395 'ID: B6 @ 12.5 Benzene Tolue ne Ethylbenzene p-Xylene m-Xylene o-Xylene Isopropylbenzene TVH #396 ID: B7 @ 12.5 Benzene Toluene Ethylbenzene p-Xylene m-Xylene o-Xylene Isopropylbenzene #397 ID: B8 @ 12.5 Benzene Toluene Ethylbenzene p-Xylene m-X yl e ne o-Xylene I sopr opylbe nz e ne #398 ID: B8@15.0 Benzene Toluene Ethylbenzene p-Xylene m-Xylene o-Xylene Isopropylbenzene ppm MRL,ppm ~1 1.0 ~1 1.0 <1 1.0 <1 1.0 <1 1.0 ~1 1.0 -1 1.0 ,1 1.0 MRL,ppm 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 Cancel ppm 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 ppm MRL,ppm <1 1.0 <1 1.0 ~1 1.0 ~1 1.0 <1 1.0 <1 1.0 ~1 1..'0 ~ 1.0 Method of Analysis:EPA~ 5020/8020 TVH = Total Volatile Hydrocarbon MRL = Minimum Reporting Level Method of Analysis: EPA 5020/802 TVH = Total Volatile Hydrocarbon. MB[, = Minimum Reporting Level Method of' Analysis: TVH = Total Volatile Hydrocarbon MRL = Minimum Reporting Level Method of Analysis: EPA 5020/8~£ TVH = Total Volatile Hydrocarbo. MBL = Minimum Reporting Level Stan Comer #399 SMC LABORATORY Analytical Chemistry 3155 Pegasus Drive P.O. Box 80835 Bakersfield, CA 93380 (805) 393-3 97 Report of Laboratory Analysis ID: B9 @ 12.5 Benzene Toluene E thylbenzene p-Xylene m-Xylene o-Xylene Isopropylbenzene TVN ~pm' MRL,ppm ,i 1.0 ~1 1.0 -1 1.0 ,1 1.0 ,1 1.0 -1 1.0 -1 1.0 -1 1.O Method of Analysis: EPA 5020/8020 TVH = Total Volatile Hydrocarbons MRL = Minimum Reporting Level SMC LABORATORY Analytical Chemistry 3155 Pegasus Drive P.O. ))ox 80835 Bakersfield, CA 93380 (805) 393-35~? Re~ort of L&~ormtory Analysis Laboratory No. 409 through 41.3 RwEULTS OF ANALYSIS #410 ID: MW-2 mugm/L ~ Benzene 89 0.5 Toluene < O. 5 O. 5 E thylbenzene · O. 5 0.5 p-Xylene 89 O. 5 m-Xylene · O. 5 O. 5 o-X yl ene < O. 5 O. 5 Isopropylbenzene · O. 5 0.5 Styrene ~ O. 5 0.5 n-Propylbenzene ~ O. 5 0.5 t--Butylbenzene ~ O. 5 0,5 s-Butylbenzene < O. 5 O. 5 I ,2,4 ~-Trlmethylbenzene ~ 0.5 0.5 n-Butylbenzene < O. 5 0.5 2,3-Benzofuran · O. 5 0.5 Chlorobenzene ~ 0.5 O. 5 1,4-Dichlorobenzene · 0.5 0.5 1,3-Dichlorobenzene ~ O. 5 O. 5 1,2-Dichlorobenzene * O. 5 O. 5 TVH 4100 10 Method of Analysis: EPA 5030/8020 MRL = Minimum Reporting Level ugm/L~ = microgram per liter TVH = Total Volatile Hydrocarbons (not identified) S tan Comer SMC LABORATORY ~ Analytical Chemistry 3155 Pegasus Drive P.O. Box 80835 Bakersfield, CA 93380 (805) 393-3597 Report of Labormtory Analysis Client Name: Twin City Testing Corporation Address I 662 Cromwell Avenue St. Paul, MN 55114 Date sample received ~ 5-8-87 Date analysis, completedl 5-18-87 Date of report .~ 5-19-87 L~boratory No. 409 through 413 Location: Davies Oil Compan? Bakersfield RESULTS OF ANALYSIS #409 ID, MW-3 Benzene Toluene Ethylbenzene p-Xylene m-Xylene o-Xylene Isopropylbenzene Styrene n-Propylbenzene t--Butylbenzene s-But ylbenzene I, 2,4-Tr ime thylbenz ene n-Butylbenzene 2,3-B enz of Utah Chlorobenzene 1,4-Dichlor obenz ene 1,3-Dichlorobenzene 1,2-Dichlorobenzene ugm/L MRL, ugm/L 0.9 ~0.5 -0.5 ~0.5 -05 *05 ,05 -05 *05 -05 ~05 -05 ~05 ~05 -0.5 ~0.5 -0.5 o.5 0.5 0.5 0.5 0.5 0.5~ 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 10 Method of Analysis: EPA 5030/8020 MRL = Minimum Reporting Level ugm/L = microgram per liter TVH = Total Volatile Hydrocarbons (not identified) W.O. #4231 87-533 S tan Comer SMC LABORATORY Analytical Chemistry 3155 Pegasus Drive P.O, Box 8083.5 Bakersfiel~, CA 93380 (805) 393-359? Report of L&~o~mt°fy Analysis Laboratory No. 409 through 413 RESULTS OF ANALYSIS #413 ID: MW-4 ~ MRL,ugm/L Benzene 1.~ 0.5 Toluene 7.6 O. 5 E thylbenzene < 0.5 0.5 p-X ylene 1.4 0.5 m-Xylene 2.4 0.5 o-X ylene 1.4 O. 5 I sopr opylbenzene ~ O. 5 O. 5 Styrene < O. 5 O. 5 n-Propylbenzene < O. 5 O. 5 t--Butylbenzene ~ O. 5 O. 5 s-Butylbenzene ~ O. 5 O. 5 1,2,4-Trimethylbenzene ~ O. 5 O. 5 n-Butylbenzene ~ 0.5 0.5 2,3-Benzofuran · 0.5 0.5 Chlorobenzene · 0.5 0.5 1,4-Dichlorobenzene < O. 5 0.5 1,3-Dichlor obenzene ~ 0.5 0.5 1,2-Dichlorobenzene · O. 5 0.5 TVH 22 10 Method of Analysis: EPA 5030/8020' MRL = Minimum Reporting Level ugm/L = microgram per liter 'TVH = Total Volatile Hydrocarbons (not identified) ~tan Comer SM~ LABORATORY Analytical Chemistry 3155 Pegasus Drive P.O. Box 80835 Bakersfield, GA 93380 (805) 39~-3597 Report of L&bormtory Analysim Laboratory No. 409 through 413 R~ULTS OF ANALYSIS #412 ID: MW-8 Benzene Toluene E thylbenzene p-Xylene m-Xyl ene o-Xylene I sopropylbenzene Styrene n-Propylbenzene t--Butylbenzene s-Butylbenzene I, 2,4-Trimethylbenzene n-Butylbenzene 2,3-Benzofuran Chlorobenzene 1,4-Dichlorobenzene 1,3-Dichlorobenzene 1,2-D ichlor obenzene ugm/L MRL, ugm/L ~o.5 0.5 ~0.5 0.5 · 0.5 0.5 <0.5 0.5 ,0.5 0.5 ~ 0.5 0.5 -0.5 0.5 ~0.5 0.5 ~0.5 0.5 ~o.~ o.5 ~o.~ o.~ ~0.5 0.5 ~0.5 0.5 ~0.5 0.5 ~0.5 0.5 ~o.5 o.5 ~0.5 0.5 '0.5 0.5 · 10 10 Method of Analysis, EPA 5030/8020 MRL = Minimum Reporting Level ugm/L = microgram per liter TVH = Total Volatile Hydrocarbons (not identified) S tan Comer S~ ~A~O~ATORY Analytical Chemistry. 3155 Pegasus Drive P.O. Box 80835 Ba~erafield, aA 93380 (805) 393-3597 Report of Labor&tory Analysis Laboratory No. 409 through 413 R~ULTS OF ANALYSIS #411 ID: MW-9 Benzene Toluene E thylbenzene p-Xylene m-Xylene o-Xylene I sopropylbenzene Styrene n~Propylbenzene t--Butylbenzene s-Butylbenzene 1,2,4-Trimethylbenzene n-Butylbenzene 2,3-Benzofuran Chlorobenzene 1,4-Dichlorobenzene 1,3-D ichlor obenzene 1T~-D ichlorob~nzene u~m/L MRL,u~m/~ 1155 O.5 3810 0.5 1740 O. 5 315o 0.5 6730 o. 5 550o O.5 40.5 o.5 ~o..5 0.5 ,0.5 0.5 ~0.5 0.5 ~0.5 0.5 3~o 0.5 965 0.5 1815 O.5 ~0.5 '0.5 ~0.5 0.5 '0.5 0.5 ~0~5 0.5 33,400 Method of Analysis: EPA 5030/8020 MRL = Minimum Reporting Level ugm/L = microgram perliter TVH = Total Volatile Hydrocarbons (not identified) S tan Comer SMC Laboratory Analytical Chemistry 3155 Pegasus Drive P.O. Box 80835 Bakersfield, CA 93380 (805) 393-3597 Client Name: Twin City Testing Corporation Address : 662 Cromwell Avenue St. Paul, MN 55114 Date sample recieved : 5-8-87 Date analysis completed: 5-18-87 Date of report : 5-19-87 Laboratory No.409 through 413 RESULTS OF ANALYSIS Location: Davies Oil Company W.0.#4231 87-533 Bakersfi eld #409 ID: MW-3 ugm/L MRL,ugm/L Benzene 0.9 0.5 TPH (diesel) 6.2 1.0 #410 ID: MW-2 u~m/L MRL,ugm/L Benzene 89 0.5 TPH (diesel) ,1.0 1.0 #411 ID: MW-9 u~m/L MRL,ugm/L Benzene 1155 0.5 TPH (diesel) ~ 1.0 1.0 #412 ID: MW-8 ugm/L MRL, ugm/L Benzene · 0.5 0.5 TPH (diesel) < 1.0 1.0 #413 ID. MW-4 u~m/L MRL,ugm/L Benzene '1.8 0.5 TPH (diesel) <1.0 1.0 Method of Analysis: EPA 5030/8020 (FID) ugm/L = microgram per liter MRL = Minimum Reporting Level TPH = Total Petroleum Hydrocarbons Stan Comer ~ LABOrATOrY Analytical Chemistry 3155 Pegamu8 Drive P.O. Box 8083~ Bakersfield, aA 93380 (8o5) Report of Lmbe~mt~ry Analysis Laboratory No. 409 through 413 RWSULTS OF ANALYSIS ID ~' Travel Blank Benzene Toluene E thylbenzene p-X yl erie m-Xylene o-Xylene I sopropylbenzene Styrene n-Propylbenzene t--Butylbenzene s-Butylbenzene . I, 2,4-Trime thylbenz erie n-Butylbenzene 2,3-B enz of ur an Chlorobenzene 1,4-D ic hlor obenz erie 1,3-D i chlor obenz e ne 1,2-D ichlor obenzene Method of Analysis, EPA 5030/8020 MRL = Minimum Reporting Level ugm/L = microgram per liter TVH = Total Volatile Hydrocarbons  MRL,ugm/L 0.5 -0.5 O.5 -0.5 0.5 40.5 0.5 ~0.5 0.5 .~0.5 . 0.5 ~0.5 o.5 '0.5 0.5 '0.5 0.5 ~0.5 0.5 --0.5 0.5 -0.5 0,5 40.5 0.5 40.5 0.5 40.5 0.5 ~o.5 0.5 ~0.5 0.5 '0.5 0.5 ~10 '(not identified) S tan Comer APPENDIX D SIEVE ANALYSIS SIEVE ANALYSIS TESTS PROJECT Davies Oil Company Bakersfield, California REPORTED TO Mark Mason BORING NO. SAMPLE NO. DEPTH TYPE OF SAMPLE CLASSIFICATION (ASTM: D 2487) Symbol De~criptio n MECHANICAL ANALYSIS: Dry Weigh! of Total Sample (Ir'am: B,u, ed on Total Sample Finer Than ~100 B-9 @ 17.5 Sleeve (SP) Sand, fine to medium grained 487 100.0 69.7 6.4 3.0 m SL-46 (lO, A) DATE 6-16-87 lOB NO. 4231 87-533 PROJECT ~;TATI,J$ REPORT' Delta Project Number:. Proiect Name: Project Location: Delta Prgj~ Manaeer:. 40-87-326 Client: Davies Oil Company 3305-1/2 Gulf St., Bakersfield, CA Federated Insurance Company 5260 Birdcage Street, Suite 200 P.O. Box 586 Citrus Heights, CA 95611 Attn: Joe Kessing Michael M. Westerheim (~lient Pr0iect Number:. 83Z-9,26,40 Summary of Work Performe0 During October. 1987: We received and reviewed projec, t file from Twin City Testing the first week of the month. Quarterly monitoring was conducted on October 22, 1987. Six monitoring wells were sampled, with physical observations of water levels and quality noted. A total of five water samples and one product sample were sent to the laboratory for analysis. Free product is apparent in monitoring well MW-1 on site. We contacted Amy Green with the Kern County Dept. of Health and also Tim Garrison with the RWQCB. They were informed that Delta was working on the project and that a quarterly monitoring report would be issued approximately six weeks following sampling. l~nusual Problems Encountered Durin£ Report Period and Solutions: No problems occurred during the site visit. Plans for Additional WQrk During Novemlper. 1987: Analyze the quarterly monitoring data and prepare a report, including recommendations to remediate the free product plume on site and a plan to further assess the contamination off site. The RWQCB indicated that they would not imped~e any progress made at the site regarding clean-up operations. Michae~l~M. Westerheim, E.I.T. Civil Engineer/Project Manager *The purpose of this report Is to present a brief summary of the status of this project. detailed reports will be submitted as required throughout the project. Copies To: DEC-005 Tod D. Christenson St. Paul Office Rex Rice Amy Green Tim GarrisOn Additional DELTA ENVIRONMENTAL CONSULTANTS, INC. STATE OF CALIFORNIA GEORGE DEUKMEJIAN, Governor CALIFORNIA REGIONAL WATER QUALITY CONTROL BOARD-- CENTP L VALL REGION SAN JOAQUIN WATERSHED BRANCH OFFICE: 3614 EAST ASHLAN AVENUE FRESNO, CALIFORNIA 93726 PHONE: (209) 445-5116 15 April 1987 Mr. Rick Davies Davies Oil Company 3305 1/2 Gulf Street Bakersfield, Ca 93307 REVIEW OF PROPOSED HYDROGEOIf~IC INVESTIGATION BY TWIN CITY TESTING, OF UND~ TANK (UT) T,'WAKS AT DAVT'W.q OIL O0, IN BAKERSFT'Frrrb CAT,T'F'ORNIA Enclosed for'your information is a copy of our comments develcped in our review of the work plan submitted by Twin City Testing for an investigation into soil and ground ~¢ater contamination at your site. The memorarnh~n inclicates that the submitted work plan does not provide us with sufficient information to determine its (the work plan's) adequacy in addressing our concerns. Our review ir~cates areas where m~re information is needed. Prior to 29 May 1987, please provide us with a revised work plan for developing the information re~]~red in the attached memo~..The work plan should include sufficient detail to allow us to determine the adequacy of the proposed study. It should also contain a time schedule for conducting the study and submitting the subsequent report of geotechnical investigation. We have enclosed 'for your reference an outline for Report Of Geotechnical Investigation. All tachni~ information submit~ to us, including the work plan and the ge~technical report should be prepared under the direction of a California registered civil engineer or engineering geologist.' Should you have any questions regarding this matter, Garrison of t_his office at (209) 445-5500. JAMES B. WOLFSON senior Engineer please contact Tim Enclosure cc: Ms. Teri Miller, Twin City Testing, St. Paul, Minnesota Mr. Tom Mele, Kern County Health Department, Bakersfield CALIFORNIA REGIONAL WATER QUALITY CONTROL BOARD-CENTRAL VALLEY REGION 3614 E. Ashlan SAN JOAQUIN WATERSHED BRANCH Telephone: (209) 445-5116 Fresno, CA 93726-6905 State Lease Line: 421-5116 TO: James B. Wolfson FROM: Tim K. Garrison DATE: 6 April 1987 SIGNATURE: SUBJECT: REVIEW OF PROPOSED HYDROGEOLOGIC INVESTIGATION BY TWIN CITY TESTING OF UNDERGROUND TANK (UT) LEAKS AT DAVIES OIL COMPANY, BAKERSFIELD BACKGROUND: Davies Oil Co. estimates (by inventory reconciliation) leakage of 2500 gallons of leaded gasoline from UT's at their facility in Bakersfield. The facility'is located near Highways 99 and 58, and the Kern'River. There is also a report of diesel leakage at the same site. This (diesel contamination) was discovered upon the removal of several underground diesel tanks. Site investigations have been previously conducted by Twin City Testing of St. Paul, Minn (July 1986). Four bore holes, which were later converted to monitoring wells, revealed soil and groundwater contamination. Ground water is at 15-feet. Ambient water quality is excellent, with EC ranges of about 300 umhos. Kern County Health Department (HD) was the lead agency until it was discovered, that ground water was contaminated. They turned the project over to us in March 1987. BTX levels of 43-550 ppb in two of the monitoring wells.were reported by Twin City Testing. Twin city Testing has submitted a rePort. for review, "Proposed Hydrogeologic Investigation, Davies Oil Company, 3305 1/2 Gulf St. Bakersfield". REVIEW OF SUBMITTED REPORT: The report's main purpose is to describe how Twin City Testing plans to (further) investigate the extent of contamination. Their plan follows: .7 1) Drill two soil borings ajacent to the diesel tank removal site. Finish one of these borings into a monitoring well. 2) Drill two soil borings on properties contiguous to the Davies Oil Co. property and finish both into monitoring wells. 3) Test soil samples and any ground water encountered for contamination. REVIEW OF PROPOSED HYDRfX~DLOGIC INVESTIGATION BY %~N CITY TESTING OF UNDE~GRfX/ND TANK LEAKS -2- 6 April 1987 CRITIQUE OF SUBMITTED REPORT: My review indicates that the report lacks essential information .required for' us to asses Twin City Testing's 'plans for their investigation. My comments follow: 1) The report is vague in the distinction between the diesel and gasoline contamination, and how each investigation is to be handled. 2) The report map does not show the locations of all proposed borings. ~' 3) Test results for previous samplings are not included. 4) No mention is made of the hydrogology of the ground water in the area. 5) The geology of the area is not discussed. 6) The rationale for location of soil borings and monitoring wells is not specified. 7) A California regestered engineer or engineering geologist has not signed the report. CONCLUSION: Twin City Testing haS not submitted enough information for us to properly evaluate their report. 'I I' UNDERGROUND STORAGE TICK UNAUTHORIZED RELEASE (LEAK)/~ONTAMINATION SITE REPORT EMERGENCY /' .-' STATE TANK ID ~ [L~ YES ~ NO HAS STATE OFFI'(~E OF EMERGENCY SERV'ICE5 REPORT BEENFILED? ~ REPRESE~ lNG ~ ~OdALAGENCY ~ OTHER JCO~P~NYOR AG~N~[NAM~ : /j / ,~'' ~ I ~ ~' ~" ''~ TYPE OF BUSINESS ~AIL FUEL STAT ION CR~SS~T.EET ' /) I TYPE OF AREA ~MM~RClAL ~INOUSTmAL  ca5 ~ (ATtaCh EXTRA SHEET if N~EDED) ~NaME / QUaNtitY LOSt mO ~ > ~ UNKNOWN TION~ OTHER: ~ REMOVAL ---- ~ t !' , Y ~ ROUTINE MONITCRING ~ANK ~ NUISANC~ CONDI ~ ~ DATE DISCHARGE BEGA~~N ~EMETHOD USED TO STOP DISCHARGE~ (CHECK ALE THAT ~sEAPPL~) TANK -- ~ HAS QISCHARGE BEEN STOPPEDT ~ REPAIR TANK ~ REPAIR PIPING ,~ CHANGE PROCEDURES 5OUR~(S) OF DISCHARGE TANK~ ONLYlCAPACITY / .~ ~ ,~ .... GA~ ~. ~ MATERIAL ~ PIPIN~ LEAK / ~ RUPTURE/ FAILURE RESOURCES AFFECTED WATER SUPPLIES AFFECTED THREAT- UN-- ' OF ~ SOIL (VAO0S[ ZONE) ~ ~ ~ ~/ WATER ~ BUILDING OR UTILITY VAULT ~ ~ ~- ~ AGRICULTURAL ~ ~ ~ g< OTHER (SPECIFY) E] ~ ~ ~ OTHER(SPECIFY) ~ ~ ~ ~ GROUNDWATER BASIN NAME ' ~ UNKNOWN ' ' COMMENTS: O U  COMPLETE AND ATTACH A CLEANUP TRACKING RE~ORT IF ANY CLEANUP WORK OR PLaNNIng HaS STA~TE~ ~sc o5 C A R o L 0 C K ~ u E L Pump Make anti Moclel Totahzer Pump Totahzer Readies Start Pump I Ma~.a ancl M~oe, TOtallZlr Start R~Bc:J I r~j$ (money ~rOOuCt Pump Totalizee Re~dln~S Start (money J Pump Totahzer Procluct Pump MaKe dn,'t Totahzar R ail~ i~s Start (money ~ ~vies Oil Company P. O. Box 8¢}1}67 Bakersfield CA 93381} o~e [-] Comp.~e, Star l-t gallo~i) ' ,! Return tO Storage (gaHonsi-- Start (g~llo [..,.,. glPC;em 9 tO Storage tgaiionll Return to ~orege ~g~ilon~) Start (gallonsj C} m,,: :-!c ........ ©~: .... i:i=c~.~ of Computer or Meter Charade IJoo NumO~t Slow Cdhbratlon; Fos~ Cne,:keo ~ F,~sl ~No Original (wnltel Invo~ce Copy Ouphcale (~;anary~ File Copy To / ! Pump ' :-' _~O. Box 5188 ersfield, Ca 93388 Record of Computer or Meter Change [] Meter Change Computer Change W/M NotlJ,ed -SlOw .... ' ::,i ~ Totahzer ~.:!.?: . Finlln (monevi Start (money} · Pfocluct · pump 4:', Totatize~ and MoOel Finish (money) Stazt Jmonev) "Prod~t ..... · MaKe eno Model Finl~ (money) .' ..... MakJe.and Model . Pump ' !,:.':i:"" F m,~ls (money) St~t (moneyJ Oistr,l~tion:' Original (white) Invoice Copy .Duplicate (canary} File Copy Serial Numar Return tO StorNe (gallon~} F in,ih (geilonsj o C'/,. <2 Return tO Storage {gaiton~) SerldL NumQer., ... J Job Numl~r Taggecl Tag ,IP []R,,,~ ~a .... L--JSl,,e l Calibration: Fdst C~ecked '~ '_~ To Totahzer Sealed 13 vo, [] No 'reggie t:..~ Rea [:~G,een L-] Slue ' F att Calibration; . Checke~ ~ ~ - AQIutteQTo I Fart T otat~zer Seale~ ~¥et Tag ~ ....... Slow Slow . Meter Sealed [] v,, 0 No Tagged ] [--]Rea []C. eeo aa,ua Calibration: Fast ChecKeo ~ Fast Adjusted To Total,zer SeaieO [] Y ~". [] ~0 'ragged ['-~Red OGreen r']Blue Calibration: Fast Ci~ec~eO *~ {.._ .' F att Adlusted Tag $ tSlow Slow 0 v., [] No Tag ~ JSlow T~dy~O ['-]Blue Tag e []Red ~]G,een F asr J Slow I F att I Slow J r-]No Cahb~atton: Checked A~iuttecI To Meter Seale~l [] Yes 3une 23, 1987 662 CROMWELL AVENUE ST. PAUL MN 55114- PHONE 612/645~3601 Kern County Health Department 1700 Flower Street Bakersfield, California 93305 Attn: Ms. Ann Boyce Subj: Gasoline Loss Investigation Edison Market Edison, California Claim #83Z-003 #4231 86-100 Dear Ms. Boyce: On April 22, 1986,. Twin' City Testing Corporation (TCT) transmitted to you. TCT report #4231 86-100 presenting the results of our subsurface soils investigation with proposed remedial measures. We are waiting to receive written confirmation of your verbal approval (May 7, 1986) for these proposed remedial measures. Thank you for your continued cooperation. If you should have any questions please contact our office at (612) 641-9372. Very truly yours, Twin City Testing Corporation rs, M.S. Environmental/~eologist Mark S. Mason, Environmental Geologist Senior Project Manager GM/MSM/j'r CC: 1 - Federated Insurance Company Attn: Mr. Joe Kessing 1 - Pence Oil Company Attn: Mr. Charles Pence ?d,I E©tJA{. (')PP('~RTUNi FY EMPLOYER I-IOURJREPORT.~,]~LE V.~,I~ I AtI ON/LOSS NOTIFICATION 'Kern County Bealth Department l?OO flQwer 3treet BakerIfXeld, California 93a05 Attn: Under,round Tank Section Facility: ~~ ~ Fact!it~ Address: ~~- Name 0~f Person Filin~ Repor~: Permit · Inventory , the a~ove facility had an (date and time) variation/loss that exceeded reportable limits as described below: Tank Amount of nail~ Variation/Loss ; o7. Amount of ~nount of Total. Minuses .. Weekly Monthly Line 3 of Variation/Loss Variation/Loss Trend Analysis I have stopped dispensing product and begun investigation procedures required by the PerIlttlng Authority. ~7,c~ ~/~?~/~/~ 81gnature~~' DAVIES OIL CO. INVENTORY RECONCIL,I.A.TION SHEET PERMIT # 1 3 13 4&5 ' '12 14 8 9 ' 15 16 in. in. NET GROSS inven. day/time fuel 'wat.i inven, gal. gal. reduct sales ~djust. thruput O/S O/S % ~ e g i n n i n g z/////////~III/III/, ,'~'-') l.~. 7,~ ///I//////////~ "///////////// ~ ~'"~ ~ l--(: /,~L2..'.,~C' ~l~)~_ ~;,.':." ~:.'/~:.'; ~ ..... :' · - I.?,,,. lA ? ..... -' , ~.. . ,. ..:; . .~ ~, '~ ,~.:.?. J-v [ 7; ..... '" [ > ..:' ,~ -' "'"'"'" ...... , .-,.~, ,.-,,,.,: . . ,-:- ~...~-. !..:~, .... :' '"~ ;, Il' l? > ' "' ~ ~'",~: ':- /. '""' × ' '~ / · ,.. ~- ':" ';"' ':. Y/- / ,- :: , ~'";"/ ' )Z.'~ t ' ';~ ':' ~ ;' ?;: ~" "/'~.-'v.:,, %<.," ?? : ..' ~'~,/.c~ .:', ~ '"' '~ '~ ' '~ ' ?:;':-"' '?" / .3' .c- ~:. ~ ':~ ' ')": ~': "~" ? F'-~ ./: :<, ~,. ~ ' - z · - .' ' '.~' . ."'.' ' . . '- , '///////, 7//////////, ////, '/////////> Zl///;,//h /~ :~,.~, ??3 ~- 97d '/ · · . e ~ ~ . ~1I?111~ 11111/ VIIIIIIII, /llI/ilIA'l/lllllh ~1111111/, 'lll/lll/lllllz ~11111111~ ,~ e ~_ '~ ~ Z/II/IIi/I/IIi ////////~ III/III/Id /////////Z /////////,?/////d/////, ;////////~ '" il ~//////////~. } .~, e e ~: ~ I/II/IL 7////// '///////// /////////~ ///////// ////'////// ~//////////& Y/I/II/III' i - April 22, 1987 662 CR©MWELL AVENUE ST PAUL. MN 55114, 'PHONE 612/645-3601 Kern County Health Department 1700 Flower Street Bakersfield, California 93305 Attn: Ms. Amy Green Subj: Proposed Hydrogeologic Investigation Davies Oil Company '3305 1/2 Gulf Street Bakersfield, California Claim #83Z-40 #4231 87-533 Dear Ms. Green: This correspondence supplies the additional information which was requested by the Kern County Health Department on April 1,.1987. Question #1: "The proposed sampling plan described one boring in an area northwest of the excavation. The rational for choosing this location was not included in this proposal." Response: Twin City Testing Corporation (TCT) has proposed to drill a minimum of two soil borings adjacent to the tank excavation area, one to the northeast, and one to the southwest. The boring in the southwest corner will be completed as a monitqring well. At this time, we propose to drill two additional borings near the remaining corners of the excavation. These locations are indicated on Figure 1. All four borings will be used to assess, the soil conditions around the excavation. If hydrocarbon contamination is encountered, we will advance borings at greater distances from the excavation to determine the horizontal and vertical extent of the contamination. ,arq EQUAL oPPORTUNITY EblPLOYER Kern County Health Department April 22, 1987 Page Two ~4231 87-533 Question #2: "No information on sampling depths is included in the proposal." Response: We will sample at intervals of 2 1/2' tO a depth of 5' below static ground water elevation. We are scheduled to begin drilling at the site on May 5, 1987. If you should require additional information, please contact me at (612) 649-5594. Very'truly yours, Twin City Testing Corporation Teri Miller Geologist / · Mark S. Mason, Environmental Geologist Senior Project Manager TM/MSM/j r Encs uw-?~ 1 z m 0 PRODUCT & VAPOR~ ~MW-1 I~ MW-5 PROPERTY LINE FENCE MW-2 & VAPOR' OFFICE OFFICE TRAILER I~ MW-6 - FIGURE' 1 SITE MAP PROPOSEi3 HYDROGEOLOGIC INVESTIGATION ' DAVIES OIL COMPANY ~AKERSFIELD,CALIFORNIA 4231 87-533 LEGEND: ~ SOIL BORING/MONITORINC WELL LOCATION ~ PROPOSED SOIL BORING/MONI'~ORING WELL LOCATION 0 PROPOSED SOIL BORING LOCATION ['~ PREVIOUS BURIED TANK LOCATION .... VAPOR LINE DISPENClNG LINE 0 3O Scale Feet 1700 Flower Street °Bakersfield, California 93305-4198, ' Telephone (805) 861-3621 K,_~N COUNTY HEALTH DEPARTI AIR POLLUTION CONTROL DISTRICT LEON M HEBERTSON, M.D. Director of Public Health Air Pollution Control Officer April 1, 1987 Rex Rice~ Davis 0il Company 3305'Gulf Street Bakersfield, California 93307 Re: Site Characterlzation Proposal for Davis 011 Company, 3305 Gulf Street, Bakersfield, California Dear Hr. Rice: The Site Characterization Proposals for the Davies 0il Company on Gulf Street in Bakersfield, California were received on March 4 and March 23, 1987. The following information is still lacking and must be addressed before approval wlll be granted by this health department. 1. Samples must be retrieved from the area where soil contamination was discovered, t° provide information on the vertical and horizontal extent of contamination. The proposed sampling plan describes one boring in an area northwest of the excavation. The rational for choosing this location..was not included in the proposal. 2' All planned sampling depths must be specified, in the report. No information on sampling depths is included in the proposal. The sampling proposal must be modified to reflect the concerns above. Please submit that information to the Kern County Health Department within two weeks. Envir~nme~.~l Health(~S~[m'cialist Hazardous Materials ~Ianagement Program AEG:aa c}: Twin City Testing March 17, 1987 662 CROMWELL AVENUE S'E PAUL 'MN 55114 PHONE 612/645-3601 Kern County Health Department 1700 Flower Street Bakersfield, California 93305 Attn: Ms. Amy Green Subj: Proposed Hydrogeologic Investigation Davies Oil Company 3305 1/2 Gulf Street Bakersfield, California Claim #83Z-40 #4231 87-533 Dear Ms. Green: As per our phone conversation on March 17, supplement to our work plan. 1987, the following list is a Locations of the proposed soil borings are indicated on Figure 1. Unless monitoring wells are installed, soil borings will be filled with a cement, groUt to within 2' of the ground surface. As soil samples are obtained in the field, they will be screened with an hNu Photoionization Analyzer calibrated for direct reading in ppm (part per million) of benzene. After screening, certain samples will be selected for chemical analysis to determine the vertical extent of hydrocarbon contamination. Soil samples will be submitted to either BC Laboratories or SMC Laboratory for chemical analysis. The laboratories are State certified. The soil samples will be analyzed for total petroleum hydrocarbons and benzene by EPA Method 418.1. %., .AN E©UAI. OPPORTUNI'T'Y EMPt_OYER Kern County Health Department March 17[ 1987 Page Two ~4231 87-533 If you should require additional information, 649-5594. Very truly yours, Twin City Testing Corporation Teri Miller Geologist Mark S. Mason, Environmental Geologist Senior Project Manager TM/MSM/jr Encs cc: 1 - Federated Insurance Company Attn: Mr. Joe Kessing - Davies Oil Company Attn: Mr. Rick Davies please contact me at (612) 0 PRODUCT & VAPOR~ i . [PRODUCT ~MW-3 ~)MW- 1 & VAPOR' (~) ~,~1 W- 5 PROPERTY LINE FENCE MW-2 ~ MW-6 · FIGURE' 1 SITE MAP PROPOSED HYDROGEOLOGIC INVESTIGATION DAVIES OIL COMPANY · BAKERSFIELD,CALIFORNIA 4231 87-533 LEGEND: (~) SOIL BORING/MONITORING WELL LCCATION (~ PROPOSED MONITORIhlG ~'IELL LOCATION 0 PROPOSED SOIL BORING LOCATION ['"i PREVIOUS BURIED TANK LOCATION .... VAPOR LINE DISPENCING LINE OFFICE TRAILER 0 30 O~ce Memorandum · KERN COUNTY 3~.OlX,l : /q",L"/'//__) -75,n ~'taa-~' Telephone No. PAS 580 1151 9~-5005 (Rev 1-84) March 5, 1987 662 CROMWELL AVENUE SE PAUL, 'MN 55114 PHONE 612/645-3601 Kern County Health Department Division of Environmental Health 1700 Flower Street Bakersfield, California 93305 Attn: Mr. Tom Mele Subj: Davies Oil Company Bakersfield, California Claim #83Z-009 #4231 86-533 Gentlemen: Attached for your review and approval is a Kern County Health Department application for one additional monitoring well at Davies Oil Company. This well will be located near the diesel fuel tanks which were removed in October, 1986. If you have any questions regarding the attached application permit, please contact Mr. Jeff Kuhn at (612) 649-5590 or Mr. Mark Mason at (612) 641-9372. Very truly yours, Twin City Testing Corporation Jeffrey A. Kuhn Geologist JAK/jr Encs cc: 1 - Davies Oil Company Attn: Mr. Rick Davies 1 - Federated~Insurance Company Attn: Mr. Joe Kessing DIVISION OF ENVIRONMENTAL HEA~TH 1700 FLOWER ST., BAKERSFIELD, C, TELEPHONE: (805) 861-3636 · CONSTRUCT, RECONSTRUCT, DEEPEN OR DESTROY A WELL PERMIT NO C.T. March 4, 1987 APPLICATrON DATE April 6, 1987 PROPOSED STARTING DATE April 9. !987 PROPOSED COMPLETION DATE JOB ADDRESS/LOCATION T 29S R 27E SEC. 3305½ Gulf Street, Bakersfield, CA TYPE OF WORK (CHECK) INTENDED '~J~E-~]FIECK) DOMESTIC/PRIVATE DOMESTIC/PUBLIC AGRICULTURAL INDUSTRIAL CATHODIC TEST HOLE OTHER OWNER'S NAME Davies 0il Bakersfield, CA ADDRESS .q2(L:.:~- Gulf Street TELEPHONE 805-323-6063 CONTRACTOR Layne Western LICENSE NO. 452609 ADDRESS P 0 Box 3216, Bakersfield, CA TELEPHONE 805-324-6026 NEW WELL X RECONSTRUCTION PROPOSED WELL DEPTH MAX 55 FEET MIN 35 FEET PENETRATES CORCORAN CLAY (CHECK) · YES NO X GRAVEL PACK (CHECK) YES X NO FROM2" above .TOscreen bott~T ..... PROPOSED SEAL(S)/P[UG(S) SURFACE ANNULAR OTHER FROM 0 TO -. 5 FEET FROM TO FEET FROM TO FEET FROM TO INSPECTION REQUIRED. (HEALTH DEPT. CHECK) Concrete DESTRUCTION OF WELL APPROX. DEPTH FEET INSPECTED BY BY BY BY '"BY PENETRATES CORCoRAN ClAY CASING DIAMETER · 23 ,40ACRE SUB. DEEPEN DESTRUCTION DESCRIBE MATERIALS AND PROCEDURES NE¼ ROTARY X DUG DRILLED- Hollow s%em BORED CABLE TOOL DR IVEN PROPOSED CASING DIAMETER ~,. GAUGE/WALL ...... TYPE Stainles~ DEPTH S~LING MATERIAL (CHECK)' NEAT CEMENT X PUDDLED C~Y CEMENT GROUT OTHER CONCRETE PROPOSED PER~0RAf[6~s dR"~R'E~N FROMm10 S1 o~O $.~.,~.~.~I_~_~E~ FROM ......... TO .................. FEET FROM . _ .TO FEET FROM TO . . FEET FROM . ~ TO ........ FEET SUBMITTED BY ACCESS APPROVAL FLOOD PLAIN ZONING APPROVAL 'ZONING ZONE APPROVED DISAPPROVED APPROVED SUBJECT TO CONDITIONS REPORT REASON(S) FOR DENIAL OR NECESSARY CONDITIONS HERE: AS AGENT FOR DISPOSITION OF APPLICATION (FOR OFFICIAL USE ONLY) HEALTH DEPARTMENT APPROVED DISAPPROVED APPROVED SUBJECT TO CONDITIONS REPORT REASON(S) FOR DENIAL OR NECESSARY CONDITIONS HERE ELECTRIC LOG REQUIRED YES NO BY DATE BY DATE FEES PAID DATE CASH CHECK BANK // * PERMIT EXPIRES ON NINETIETH (90) DAY AFTER DATE OF ISSUANCE IF WORK HAS NOT BEEN STARTED. KCHD //306 EH (9/78) * SKETCH WELL LOCATION ON REVERSE SIDE BAKERSFIELD OFFICZ LINES. 1/2 MILE :~ r~* r-, ~ WELt '~OR3E:S THE L.A'~C, FHE i/2 MILE 'E :-C' T'/70."~'~ CECT;Z'J -, .... ,wvr-q JR SKETCH ROADS, RAILROADS, STREAMS OR OTHER FEATURES AS NECESSARY, ~ND!CATE DISTANCES. ,~ SECTION iF A ROADfS¢ :'>~,'L~L: -...55 3E '7, AOE ~'RO,'.A ~E 'ZE. TER OF THE ROAD. , NORT~ I SKETCH BUILDINGS, SEPTIC TANK, LEACH LINES OR SEEPAGE PIT, ZBANDONED WELLS, STREAMS, SEWER LINES - GIVE EXACT 'AEASUREMENT OF DISTANCES 'O :~CPOSED WELL. $,,'~&~,~,S T~-r '-C,rz: 'r', THE ,'.:~EASURE/'AEF~T(S! SHOULD ALSO BE MADE FROM THE CE' .;ER OF [HE PC,AD. DIVISION OF ENVIRONMENTAL HE~ 'TH 1700 FLOWER ST., BAKERSFIELD, C, TELEPHONE: (805) 861-3636.- CONSTRUCT, RECON?qUCT, DEEPEN OR DESTROY A WELL PERMIT NO. C.T. APPLICATION DATE .".r i ! 'cq7 · :.', PROPOSED STARTING DATE ,' "f'J~, ':. :~i:7 PROPOSED COMPLETION DATE JOB ADDRESS/LOCATT~)N TYPE OF WORK (CHECK) INTENDED USE (CHECK) DOMESTIC/PRIVATE DOMESTIC/PUBLIC AGRICULTURAL INDUSTRIAL CATHODIC TEST HOLE OTHER NEW WELL X RECONSTROCTION '-: PRoPoSED WELL DEPTH MAX ":~---FEET- ...... MfN -'5 FEET PENETRATES CORCOP. AN ClAY .... j C. Hf .C_K ). . YES ......... N© Z :_...: ........ GRAVEL PACK (CHECK) FROM PROPOSED SEAL(S)/PLUG(S) SURFACE ............................................ ANNULAR ..................... OTHER FROM ' TO ' - '-- FEET FROM .... ,TO FEET FROM TO FEET CASING DIAMETER APPROX. DEPTH DESCRIBE MATERIALS AND PROCEDURES SUBMITrED BY ·,~C'C:[~ .~PRO1/AL FIu0OD ~ ZONE, i(} .~,PPROVAL ZONIN~ ZONE APPROVED DISAPPROVED APPROVED SUBJECT TO CONDITIONS iOWNER'S NAME ,,, '-,c i i ~?~r*.t'~jr ~: ADDRESS "'!' ,.-,:if f ';:'"":: TELEPHONE . ... t:ONTR.AC~'~ '.:r F~;~; ,~c ,- ~r,, LICENSE NO. if:T; ~(' ADDRESS :; ' ~'%¢ * :'.. ':~r~f~i: , "~' ~LEPHONE "fF ..... :;;'-'"'~'""-- .... ~ " ., , ' ' SEC. 40 ACRE SUB. rF: DEEPEN DESTRUCTION METHOD'~F CON S~ U ~ii ~flt:~'E~ E6'~'~ ROTARY ~ DUG DRILLED- H,'11~ ~te~ BORED ...... ~BLE TOOL--~ DRIVEN PROPOSED GASING DIAMETER ~" ~;-GAUGE/WALE ...... S~*UNO ~A~,AC ~CH~C~) NEAT CEMEN~ ~ PUDDLED C~Y CEMENT GROUT "OTNER _ . TO .... FEET CONCRETE " .' · '. ~ ~:BY .......... ~O~?.~.~.~O · .' ~ C ~' ~ ~ .. BY FROM TO FEET ..... BY .... ' FROM -]']'~".~TO ~'~.~]]~']FEET .... BY . _ . DESTRUCTION OF WELL PENETRATES CORCORAN CLAY, i"'. ~ ............... ':,..~:.'. ?': . :.. ::.:-:.~ ' ASAGENTFOR .' ' . · " DI?~0SITION OF APPLiC~TIOa-- .............................. =H'~ALTH DEPARTMENT ........... APPROVED DISAPPROVED , _ APPROVED SUBJECT TO CONDITIONS R[PORT R[ASON(S) FOR DENIAL 0R NECESSARY CONDITIONS HERE. REPORT REASON(S) FOR DENIAL OR NECESSARY CONDITIONS HERE: ELECTRIC LOG REQUIRED YES NO .............................................. :--,,.: ~C:_.z_~___z_=::.=.::::=_:::_::.!__._.._ .................................................. ............................................. ;'?-'-~' I ......... :E- ....... I: .:~E". :-; .............................. BY ..... DATE BY ............... ...,~. , DATE FEES PAID '"~ DATE .............. CASH CHEC'K BANK # PERMIT EXPIRES ON NINETIETH (90) DAY AFTER DATE OF ISSUANCE IF WORK HAS NOT BEEN STARTED. KCHD #306 EH (9/78) * SKETCH WELL LOCATION ON REVERSE SIDE SANITARIAN UNES. NOR.TH BOUNDARY OF SECTION 11~,~ SKETCH ROADS, RAILROADS, STREAMS OR OTHER FEATURES AS NECESSARY, INDICATE DISTANCES. I/2 MILE 1/2 MILE A. LOCATION OF WELL IN SECTION LOCATE WELL'EY MEASURING FROM PROPOSED WELL SITE TO TWO (2) SECTION LINES OR i .t SECTION IF A ROAD(S BORDERS THE LAND, THE MEASUREMENT(S) SHOULD ALSO BE MADE FROM THE CENTER OF THE ROAD. (NORTH) \\ \ SKETCH BUILDINGS, SEPTIC TANK, LEACH LINES OR SEEPAGE PIT, I ~;~s&~ ABANDONED WELLS, STREAMS, [...~,~t.I SEWER LINES - GIVE EXACT /~,,,,~$ MEASUREMENT OF DISTANCES (SOUTH) B LOCATION OF WELL ON OWNERS PROPERTY. LOCATE WELL BY MEASURING FROM PROPOSED WELL SITE TO TWO (2) PROPERTY LINES. IF A ROAD(S) BORDERS THE PROPERTY, THE MEASUREMENT(S/ SHOULD ALSO BE MADE FROM THE CENTER OF THE ROAD. ~ ~ui~ Y m~¼L~ ~r~. DIVISION OF ENVIRONMENTAL HE 1700 FLOWER ST., BAKERSFIELD, C~ TELEPHONE: (805) 861-3636 ' ,:AP'VLIL-t"~IiL-)IN rk.?iK ,=', r'E~lV~ll CONSTRUCT, RECON$?RUCT, DEEPEN OR DESTROY A WELI~ PERMIT NO. Hatch 4, lg87 ....... " OWNER'S NAME Oavies 0il Bakersfield, CA APPLICATION DATE ADD~FSS ~.~05~ GUI~ Street ......... ~ ....... TELEPHONE 805-~23--606~:. Aoril 6. 1987 CONTRACTOR [a~e ~es,e~n .............. LICENSE NO. 452.~09 PROPOSED STARTING DAtE '-- ADDRESS _~_.0_.B~),.,,~.~.1,~.' .~.a.~eFsfi.~]d, ..C.~: ........ ~LEPHONE .~0~QC~[4~6026 April 9. 1987 * PROPOSED COMPLE~ION DAlE ...... JO~ x~ss;~?~ .............. ~"~ .... ~s "~" ~" ~C. '--~ ....... ~'~&~"~'~'~:--"~'~':'-:""::'::. ...... 3~05~ Bull Street, ~a~ers~J~':'"'C~' ::::- ................................................. .-" ~-~_~ ..... ................................................................................................. ~'S ...................................... ~ ....................... ~PE OF WORK(CHECK) NEW WELL Z: RECONSTRUCTION :~: DEEPEN '~ DESTRUCTION ',t;t~ INTENDED USE (CHECK) PROPOSED WELL DEPTH DOMESTIC/PRIVATE DOMESTIC/PUBLIC :" AGRICULTURAL " INDUSTRIAL . CATHODIC TEST HOLE OTHER ...................... MAX ~$'--FEET- ...... MIN 35~ FEET ~ __ GRAVEL PACK ..~i ~; . (CHECK) FROM ?~ ilbO¥2. TOSC~,ee,; bo~t~T FROM _TO , ROTARY ,X · DUG DRILLED- ~11. St~ BORED . ......... ~ABLE T~L-.~ DRIVEN ~.~' ........... ~'"'"~6~b-~"~'i~ ..... : .............. DIAMETER ~ ' "GAUGE~ALL TYPE St at-~'l~-'~ DEPTH S~L~NO ~TERIAL (GHECK) ~EAT CEMENT ~ ~PUDDLED C~Y GE~ENT OROUT ~ ~ OTHER __..~ GONCRETE ( ~ PROPOSED SEAL(S)/PLUG(S) (HEALTH DEPT. CHECK) ~ ~ INSPECTED J PROROSED PER!0RAT~I0~N),0..RllC. R~EEN~~ ANNULAR :'~__.~__~_.~_._.~ -~_:-.~. ' ' !.~"' ": BY ...... I FROM. '~____._TO .'.__~" FEET OTHER " ' J FROM - ~ ' TO FEET FROM -"0 ............... :~) ---'~-~ ....... FEET Concrete' BY --JFROM' __-TO"' .......... '--71FEET FROM ................... TO ............ FEET ......... ; BY "'~'i~..'-"_-J FROM ~- ~TO _-~.--'""~ ..... FEET FROM ............. TO'- ............... FEET ................ : BY --' ___.:~ / DESTRUCTION OF WELL ' . CASING DIAMETER ........ APPROX. DEPTH ........ PENETRATES CORCORAN CLAY ./" ;'~_ ...... ~_~ DESCRIBE MATERIALS AND PROCEDURES ..... '_: .......................................................................... : SUBMITI'ED BY ............................. ~ ..... AS AGENT FOR .... ~[ ............................................................... ~l~ J~R0¥.ILT; DISPOSITION OF APPLICATION J~.~O~ ~ ~ ~];~OVJ~ (FOR OFFICIAL USE?N_L.Y.! ......... ~ .. ZONING ................................ 'T HEALTH' DEPARTMENT%--'Z, '- ZONE .............. APPROVED .. DISAPPROVED APPROVED ."' 'i.i_ DISAPPROVED ........... APPROVED SUBJE~T TO CONDITIONS APPROVED SUBJECT TO CONDITIONS ............... "I~EPORT REASON(S) FOR DENIAL OR NECESSARY CONDITIONS HERE: REPORT REASON(S) FOR DENIAL OR NECESSARY CONDITIONS HERE: ELECTRIC LOG REQUIRED YES ? NO FEES PAID ....... :~..-.DATE- ~ ............................... CASH . CHECX ....... BANK ~ ........ * PERMIT EXPIRES ON NINETIETH (~) DAY AFTER KCHD ~306 EH (9/78) * SK~CH WELL LOCATION DATE OF ISSUANCE IF WORK HAS NOT BEEN STARTED, ON REVERSE SIDE PLANNING DEPT '&/ELL LOCATION SKETCH' LINES. NORTH BOUNDARY OF SECTION SKETCH ROADS, RAILR(~ADS, STREAMS OR OTHER FEATURES AS NECESSARY, INDICATE DISTANCES. 1/2 MILE -1/2 MILE. < ~'c. ,',:;: [ -' A. LOCATION OF WELL IN SECTION " ".:" LOC~,TE WELL BY MEASURING FROM PROPOSED WELL SITE TO TWO (2) SECTION LINES OR 1/4 SECTION IF, A, ROAD(S) BORDERS THE LAND, THE MEASUREMENT(S) SHOULD ALSO BE MADE FROM THE CENTER OF THE ROAD.. :.'~ (NORTH) ~,'*~c } ABANDONED WELLS, STREAMS, ~,~ I SEWER LINES - GIVE EXACT ~..~,,~ MEASUR~ENT OF DISTANCES I Z5PROPOSED WELL' (SOUTH) B. LOCATIOF} OF WELL ON OWNERS PROPERTY. LOCATE WELL BY MEASURING FROM FROPOSED WELL S~TE TO TWO (2) ~RO2~RT'F L~NES. }F A ROAD(S) BORDERS THE PROPERTY, THE MEASUREMENT(S) SHOULD ALSO BE MADE FROM THE CENTER OF THE ROAD. KERN COUNEY HIzALIH DFPr. DIVISION OF ENVIRONMENTAL HEwn'TH 1700 FLOWER ST., BAKERSFIELD, C~ TELEPHONE: (805) 861-3636 ' AFPLICAlii. JN I-Oh~ A r'kh~Mli I~) CONSTRUCT, RECONSTRUCT, DEEPEN OR DESTROY A WELL PERMIT NO. ]'.larch 4,_ 1987 " OWNER'S NAME Davies 0il . Bakersfield, CA APPLICATION DATE' -" ' ADDRESS ~305~.-.Gulf 'stre~-'i.'.~]-~i.'i~i["~'i"~i.'_-"--...i']~-E[EPHON~ 805-723-6063 April 6. 1987 I CONTRACTOR Layne Western ............. LICENSE NO. 4526.Q9 ....... PROPOSED STARTING DATE / ADDRESS .?_.~.... BQ×.._.3.2! 6;. Bakersfi e.!.~.,. ~ ..... T~LEPHONE _805..-.324~.6026. April 9, 1987 I * PROPOSED coMPLETION DATE · ....... ]-OB ADDRESS>LOCATION T . ~S iii'R ,?,']E SEC] ~,-.'~3 .... ~0 ~R~ SUB..]~'E~-'"i ....... TYPE OF WORK (CHECK) NEW WELL ~ RECONSTRUCTION ; DEEPEN ' ) DESTRUCTION INTENDED USE (CHECK) PROPOSED WELL DEPTH -METHOD OF CONSTRU~ION (CHECK) ; ROTARY 'X, DUG DOMESTIC/PRIVATE ~X 55 FEET MIN ,,.35 ._FEET DRILLED- HO] 10~ s~em BORED DOMESTIC/PUBLIC P~'~R~}ES CORCORAN C~Y .... ~BLE TOOL -; DRIVEN AGRICULTURAL. (CHECK) PROPOSED CASING INDUSTRIAL __~.~ _~ ......................... ~_~-X ............... DIAMETER 2]~ ....... GAUGE/WALL,~. CATHODIC GRAVEL PACK TYPE StaJnless DEPTH TEST HOLE (CHECK) SEALING MATERIAL (CHECK) OTHER ............................~ YES ~ 'NO ~ N~T CEMENT ' ~ PUDDLED C~Y" FROM ~.~._~o~.e._T~.c~een__bg~T CEMENT GROUT ~ OTHER ..... . FROM TO ............. FEET CONCRE~ '"~) PROPOSED SEAL(S)/PLUG(S) ' HEALTH DEPT. CHECK) INSPECTED PROPOSED PERFORA~NS. 0~ SCREEn. SURFACE ' ..... ~-~' ........ BY ~ J FROM~J_0_~_~O¢O ~.~]n leS~E~ ANNULAR ; ........ '~ BY. J FROM, __,~O ,~ FEET OTHER' '~.~.~-~[.~"-~...~' ... _L_ ~ .... ~-- J FROM 'TO '- FEET FROM u. TO ~_-,5 '-FEET Concrete ~ BY IFROM........ TO ................FEET FROM .......... T~ ........... FEET ...... ~ ~ BY ........... J FROM ........... ]TO .............. FEET FROM ............. TO ................. FEET ................. I BY ,~[~-~ I DESTRUCTION OF W~LL CASING DIAMETER ............. APPROX. DEPTH ................. PENETRATES coRCORAN C~Y ................................................ DESCRIBE MATERIALS AND PROCEDURES .................................................................................. ~ ......~ SUBMI~ED BY ...................................................... AS AGENT FOR ................. ~'-~ ...................................... 'DIS~0s~'fl0N OF ~'~(IcAT[0N ~D ~ ZO~ ~0~ (FOR OFFICIAL USE ONLY) ZONING ZONE APPROVED DISAPPROVED APPROVED SUBJECT TO CONDITIONS REPORT REASON(S)FOR DENIAL OR NECESSARY CONOII~I0NS HERE: BY ......................... ~. ....... DATE HEALTH DEPARTMENT APPROVED _ DISAPPROVED ..... APPROVED SU~J£CT TO CONDITIONS REPORT REASON(S) FOR'DENiAL OR NECESSARY CONDITIONS HERE: ELECTRIC LOG REQUIRED YES NO - BY ........................ DATE ................ ~ ........ FEES PAID ' DATE ........................ CASH CHECK BANK // PERMIT EXPIRES ON NINETIETH (90) DAY AFTER DATE OF ISSUANCE IF WORK HAS NOT BEEN STARTED. KCHD//306 EH (9/78) · SKETCH WELL LOCATION ON REVERSE SIDE APPLICANT WELL LOCATION SKETCH LINES. NOR'TH BOUNDARY OF SECTION SKETCH ROADS, RAILROADS, STREAMS OR OTHER FEATURES AS NECESSARY, INDICATE DISTANCES. (SOUTH) B. LOCATION OF WELL ON OWNERS PROPERTY. SKETCH BUILDINGS, SEPTIC TANK, LEACH LINES OR SEEPAGE PIT, ABANDONED WELLS, STREAMS, SEWER LINES - GIVE EXACT MEASUREMENT OF DISTANCES TO PROPOSED WELL. / LOCATE WELL BY M~ASUR!NG FROM PROPOSED '/YELL S!TE TO TWO (2) PROPERTY LINES. IF A ROAD(S) BORDERS THE PROPERTY, THE MEASUREMENT(S) SHOULD ALSO BE MADE FROM THE CENTER OF THE ROAD. (NORTH) I/2 MILE 1/2 MILE A. LOCATION OF WELL IN SECTION LOCATE WELL BY MEASURING FROM PROPOSED WELL SITE TO TWO (2) SECTION LINES OR 1/4 SECTION IF A?ROAD(S) BORDERS THE LAND, THE MEASUREMENT(S) SHOULD ALSO BE MADE FROM THE CENTER OF THE ROAD. '.." KERN CC-)UIX~I~ idl-~L~H L)~-H'I. DIVISION OF ENVIRONMENTAL HE,~TH 1700 FLOWER ST;, BAKERSFIELD, C, TELEPHONE: (805) 861-3636 ' CONSTRUCT, RECONS'rRUCT, DEEPEN OR DESTROY A WELI~ PERMIT NO. .Hatch 4, lg87 " OWNER'S NAME Davies 0il Bakersfie_]d.,__C?. ...... ' APPLICATION DATE , ADDRESS 3~05~_.Gulf' Street ........................ TELEPHONE 805-323-6063-':' April 6, 1987 CONTRACTOR La,me Western ...... LICENSE NO. 452609 ....... PROPOSED STARTING DATE ADDRESS _~_0__ Bg__x_~_2~6, Bakersfi el'd ~.. CA TELEPHONE _805r.32~,~6026 .. ' Aoril Q 1987 * ~RoPO~I~"cdMP~iI'ON 6-~YE ........ . :.. ...... JOB ADDRESS/LOCAqbN ............ z'~-.."~'~S .. 'R' ~ZE ...sEc ....... Z~ ............... ~0-~c~'"~.._~.~E~..~.?..,~.~........~.~ ......... .3.39.E~ ..Gu 1 f .. Street,,_ Bakersf i e 1 d, ~A ~PE OF WORK (CHECK) NEW WELL X RECONSTRUCTION j DEEPEN . ~ DESTRUCTION -~, INTENDED USE (CHECK) PROPOSED WELL DEPT, ...... ROTARY ti DUG '. DOMESTIC/PRIVATE ~X ~ FEET MIN ~_.~.5.._._FEET DRILLED- Bl1~ st~ BORED DOMESTIC/PUBLIC PEN~R~TES CORCORAN C~Y. .... ~BLE TOOL ~ DRIVEN '" . ..~ ....... u ~ AGRICULTURAL · JCHECK) . PROPOSED CASING INDUSTRIAL ..... ~S~ ~ .~ ....................... ~.~-X .......... DIAMETER _~" ' GAUGE/WALL CATHODIC GRAVEL PACK TYPE S~8~]eS~....__= DEPTH TEST HOLE .... ~CHECK) SEALING'MATERIAL (CHECK) O~ER .................................. YES [ NO' ~:" NEAT CEMENT ~ i'PUDDLED C~Y FROM Z.~.._..~o.ve_T~ :~O~[~T CEMENT GROUT~'g } OTHER FROM TO ................ FEET CONCRETE '~ ~L~ ] PROPOSED SEAL(SI/PLUG S) ' (HEALTH DEPT. CHECK) INSPECTEDj PROPOSED PERFORATIONS OR SCREEN SURFACE ........................ ; ........ BY~ ~ROMflO Sln~O StafnleSSE~C ANNULAR . ~ ~- ' ' ' BY ...... JFROM, L ~ .__TO ~FEET OTHER ..................................... - JFROM '- TO -' ' FEET FROM ' TO~ FEET ...... :- BY.' ............ J FROM .... T-'TO ......... ~--- FEET FROM ........... TO ............... FEET .......... ,] BY ........... J DESTRUCTION OF WELL CASING DIAMETER .............. APPROX. DEPTH ................. PENETRATES CORCORAN C~Y DESCRIBE MATERIALS AND PROCEDURES SUBMI~ED BY ........................................... AS AGENT FOR .............. o. ~ ~ ~ON~ ~VA~ (FOR OFFICIAL USE ~LY) ,.. ZONING ........................ HEALTH'DEPARTMENT . - · .... APPROVED ...... DISAPPROVED ZONE APPROVED _ DISAPPROVED APPROVED SUBJECT TO CONDITIONS APPROVED SUBJECT TO CONDITIONS ' 'REPORT REASON(S) FOR DENIAL OR NECESSARY CONDITIONS HERE. REPORT REASON(S) FOR DENIAL OR NECESSAR~ ~O~DI~O~S HERE: ELECTRIC LOG REQUIRED YES NO . BY ' DATE ............................. ' .............. ~y'..- '. ...................... DATE ................. FEES PAiD ........... DATE ..................... CASH CHECK BANK ~ * PERMIT EXPIRES ON NINETIETH (90) DAY AFTER DATE OF ISSUANCE IF WORK HAS NOT BEEN STARTED. KCHD #306 EH (9/78) SKETCH WELL LOCATION ON REVERSE SIDE BUILDING DEPARTME "VELL LOCATION SKETCH. - ¢ %:..?'.": r~2fl,. L[klES. .-' .-~ SKETCH ROADS, RAILROADSi 'STREAMS OR OTHER FEATURES AS NECESSARY, INDICATE DISTANCES.' NOR'fH BOUNDARY OF SECTION LOCATE WELL BY MEA,SURING FROM PROPOSED WELL SITE TO TWO (21 SECTION LINES OR;f/4 SECTION IF A ROAD(? BORDERS THE LAND, 'THE MEASUREMENT(.S) SHOULD AL~O BE MADE FROM THE CENTER'OF THE ROA~.--' '.-~ '3~. (NORTH1 ....... " "xX ~J ' T ~ .-~ '.' - ,. ,' r - ::..: ' :1 ~ I - ' ' B. LOCATION OF WELL ON OWNERS PROPERTY ' ':: :' ~ ' ' LOCATE vVELL ~,.,~-,c.c ....... ,~ rRO,V~ FROFG3ED ,~ELL 3~.TE ,O ,'WO kZ) ~R.OFERTY L~FJES. IF A ROAD(S) BORDERS THE PROPERTY, THE MEASUREMENT(S) SHOULD ALSO BE MAD~ FROM THE CENTER OF THE ROAD. .. ice , .-. - ..:-'.' ? . :-L, SKETCH BUILDINGS, SEPTIC:T~NI(,": LEACH LINES OR SEEPAGE PIT, ABANDONED WELLS, STREAMS, SEWER LINES - GIVE EXAC~ MEASUREMENT OF DISTANCES TO PROPOSED WELL. KERN COUNI'Y tJIzALiH L.)~PI. DIVISION OF ENVIRONMENTAL HE~'TH 1700 FLOWER ST., BAKERSFIELD, C~ TELEPHONE: (805) 861-3636 :- · ~HI~LI(..,AII(._)IN PUN F-~ I~I-~/V~II I(,~) "CONSTRUCT, RECON~-T'RUCT, DEEPEN '- .' OR DESTROY A WELI~._ PERMIT NO: :' - ,. :. C.T. ~ ....... _~_.:.z:..:; ..... OR SCREEN rEP , ,E, ::SUBAAITrED BY':-' ":-; '.L ~~~.:~,~',~ ~~ ';~,~ ;~ ,~,~",~G ENT I~OR .4' ?' ~ ~ ..... DISPOSITION'O~ APPLICATION % :.'~'].' ~" : FOR ~FF C AL'~O~L~ ~- ~' ' ZONE ..... ~ ....... ' .... t - ..... : ..... ~ .... AP PRO~D'_:~.D ISAPPRO~D ':' APPROVED ........ DISAPPROVED ...... L_ -~ -...... : - ~- s . -- : , ' : APPROVED SUBJEC~O C~NDI~IONS:t~;:,~ ...... : .'. APPROVED SUBJECT TO CONDiTiONS ' ,':': ,' .: .... '.~-~:~{-~:L:i~-['~6[?[A~0~(~) F0~ O~A[:,0~ N[~S~:[~'~[~[, ;,.. '.- - .................... ':2 ...... ~-~-- ~. · ~,, ~- , ', ' ............ -.-' ' iC' :... ' ', . ~., .-;~ :- r.t :, ,=--::. "-~,~' r' ./.=y 'z::"~:~' ~'~~---m~.,]~-~F~: ~.~'~ ~ .... ~,- ' ' ' ~,-- ~.~. -- ~ ' , ' ~. ~ -- - .,?.-;,.m'~ .... PERMIT EXPIRES ON NINETIETH (90) DAY AFTER . ' '."""'~-' KCHD #306 EH (9/78)-~.. :~,-,~,i:~'~KETCi~i WELL i~oCATION DATE OF ISSUANCE IF WORK HAS NOT BEEN ' ,-.' ' '" :-,'-- z~, · ' ~:' . ' " '~?['ON REVERSE SIDE ~,.. ~.,' ':~,....., .,~.~ '.~.~ '....,,.':' "'-' ' '.:'-: ~-::.: ¢.~' ASSESSOR . ?'*/ELL LOCATION SKETC~ .... .:fY..: , ' NORTH BOdNDARY GE S~:CT,ON ' - '.'.- -' '? [.h' ';.. ' :.~. 'E '~ ' :' _~': ~ ' E ..' -~. ~ -'. '~ ."<.:' :, RAILROADS, STRFJ~MS .- -OR OTHER FEATURES AS NECESSARY, , ',--o: ~::-' *' :.~ lOCAtION O~ WELL'IN .SECTION ' f '": .... ' .... :' '~"~"~ ¢::~;'C~E.3f~ . . . .. .... .'. : t:[l~ES'."5 lO~TE WELL ~Y MEASURING FRoM PRO~D:WELL SI~E ~b'~6';7[~) S~t'~ ~l~S 0R 'I:/4 SECTION IF ' "-','~?L,[:..L~ BORD~RS',THE. ~ND..THE M~SUREMENT(S) SHOULD A[SO-.BE;-~DE FROM.THE CEN~ERrO~ THE . ~.~ :. ,, .~.. NORTH) ---. '. ~' ;:. : .\.~.. ' ~: .':"; .. ~':.E'i.;:':'": '.- _.i:.:.':,:::~, i~- :,, . .... ': .-. ' '.,.v .... ~,<;:,,..: SEWER LINES- GiVE EXACT .,'-' -- ~'" ~ -:,:::':.4-:':'"~ASUREMENZ OF DIS~ANCES .'fi?-- ' , , . ': - ".'" Tg~ROPOSED WELL ~ ~:~"~ ~8, ) ' i ' ;'-'.'.' -;., ~ . .. ,__ . · ,. ;:-;,. ' '-' :t-c:' " ' : 'i, ,*~ ::':)?',:-:' ~ ... ;.,::, · .'' . '~ .: -:'* :. t..:" . - :~!4-,'~E'X ::,... '" :;':' ' ':""~u'r': ~'~r*'~"~';':'"~"'":';'-- "~ '~ . ,{;SOUTH) ;~ '~'"';-.';-.,:' ,:;;..~ ' ,: .... . '~.>:r'.'~~;' .... ;*. r,-f.~q '.. , '. ~. ' '~:,*'..z,,-~,~ - "":' B. LOCATION OFWELL Ol~l OWNERSPROPERTY. ..... '" ';'""'?' ' '~ ':"~-'"";' ' ~':'' z.k~.' '- ' ' -- LOCATE WELL BY MEASURING FROM ?R. OPOSED WELL SITE. TO TWO.(2) PROPERTY LINES. iF A ROAD(S) "- , BORDERS'THE PROPERTY',.:]'hE' MEASUREMENT(S) SHOULD ALSO BE MADE FROM THE CENTER OF THE ROAD. PROPOSED HYDROGEOLOGIC INVESTIGATION DAVIES OIL COMPANY 3305 1/2 GULF STREET BAKERSFIELD, CALIFORNIA CLAIM #83Z-4~ #4231 87-533 FEBRUARY 25, 1987 [I::Lulrl I:IC'~ L'eSl:lnCl February 25, 1987 662 CROMWELL AVENUE ST, PAUL, 'MN 55~14 PHONE 612/645-3601 Kern County Health Department 1700 Flower Street Bakersfield, California 93305 Attn: Ms. Amy Green Subj: Proposed Hydrogeologic Investigation Davies Oil Company 3305 1/2 Gulf Street Bakersfield, California Claim #83Z-40 TCT #4231 87-533 Dear Ms. Green: We are pleased to submit this proposal for completing the hydrogeologic investigation at the Davies Oil Company facility in Bakersfield, California. This proposal has been prepared pursuant to your letter dated November 1986. If you have' any questions regarding the information contained in this report, please feel free to contact Ms. Teri Miller at (612) 549-559~ or Mr. Mark Mason at (612) 641-9372. Very truly yours, Twin City Testing Corporation Teri Miller Geologist TM/j r Encs cc: 1 - Federated Insurance Company Attn: Mr. Joe Kessing 1 - Davies Oil Company Attn: Mr. Rick Davies TABLE OF CONTENTS Item 1.0 INTRODUCTION 1.1 Purpose and Scope 1.2 Backgroun~ Information 2.0 PROPOSED INVESTIGATION 2.1 Soil Boring and Monitoring Well Locations 2.2 Drilling Methods 2.3 Soil Classification 2.4 Survey of Monitoring Wells 2.5 Monitoring Well Development and Water Level Measurements 2.6 Water Quality Sampling 2.7 Laboratory Analysis of Water Quality 3.0 PROJECT REVIEW ~.0 REMARKS LIST OF FIGURES FIGURE 1 - SITE MAP FIGURE 2 - INSTALLATION OF MONITORING WELL PaRe 3 5 6 8 9 9 11 13 13 PROPOSED HYDROGEOLOGIC INVESTIGATION DAVIES OIL COMPANY 3305 1/2 GULF STREET BAKERSFIELD, CALIFORNIA CLAIM ~83Z-40 #4231 87-533 1.0 INTRODUCTION 1.1 Purpose and Scope The purpose of our hydrogeologic investigation is to define the horizontal and vertical extent of hydrocarbon contamination encountered during tank. excavations. The proposed environmental impact that the biotic and abiotic community. contaminated soils and ground investigation will address the potential contamination may impose on the surrounding The investigation will qualify and quantify water and provide information regarding the areal extent of free diesel fuel and its dissolved components. Page 2-#4231 87-533 1.2 Background Information Based on inventory reconciliation, Davies Oil Company detected a losing trend in the regular gasoline petroleum dispensing system during the winter months of 1985. In response to this trend, Davies Oil Company pressure tested the tanks and lines. The results of these tests indicated leakage of the regular ~rade dispensing lines.. Subsequently, this line was repaired. Shortly thereafter, i~ventory reconciliation again indicated product losses. On March 3, 1986, the tanks and lines were again tested and a leak was detected in the vapor lines. Repair was completed on this line and the Kern County Health Department (KCHD) was notified of the loss. Davies Oil Company estimated that 2,500 gallons of regular gasoline may have been lost at this site. In response to the suspected gasoline loss, Twin City Testing Corporation (TCT) advanced four hollow stem auger borings at the site on July 10 and July 11, 1986. Monitoring wells were installed in all four borings. Ground water was encountered at a depth of approximately 15' and the flow direction was determined to be to the southwest. The investigation is still in progress. Page 3-#4231 87-533 In October, 1986, three 10,000 gallon underground tanks were removed from the Davies Oil Company facility because they were no longer in use. Diesel fuel was detected in soil samples obtained from beneath the excavation, according to the KCHU. 2.0 PROPOSED INVESTIGATION 2.1 Soil BorinK and Monitorin~ Well Locations TCT proposes to drill a minimum of two soil borings adjacent to the tank excavation area. In addition, two soil borings will be placed on properties -,_~ ~- adjacent to Davies Oil Company. ~ne on-site boring and the two off-site ',,~'JJ'.borings will be finished as monitoring wells. TCT has requested permission · from the property owners, Mr. Jerry Swoope and Mr. Cyril Andre, and is · ~'- awaiting the signed right of entry documentation. Locations of the proposed i.''. '~onitoring wells are indicated on Figure 1. The monitoring well located on ~,' ...~ .,Mr. Swoo'pe'.s property will further define the extent of the contamination '-encountered during our investigation on July 10 and July 11, 1986. The soil boring and monitoring well placed on Mr. Andre's property will be used to evaluate the soil and ground water conditions downgradient of the tank excavation area. .l~U,lln ClL'~ I~lnq MW-4. I I [_il ED ] ~)MW-1 PROPERTY LINE FENCE PRODUCT & VAPOR/ MW-2 )UCT & VAPOR' MW-5 Page 4-#47~1 87-533 t~ MW-6 FIGURE 1 SITE MAP PROPOSED HYDROGEOLOGIC INVESTIGATION DAVIES OIL COMPANY SAK ERSFIELD,CALIFORNIA 4231 87-533 LEGEND: {~ SOIL BORING/MONITORING WELL LOCATION (~) PROPOSED MONITORING WELL LOCATION i_l PREVIOUS BURIED TANK LCCATION .... VAPOR LINE DISPENClNG LINE .~MW-3 OFFICE OFFICE TRAILER ~ l:l.Uln CI~.¥ 1::851'11'11:3 0 30 Scale Feet Page 5-#4231 87-533 2.2 Drilling Methods Ail field work will be performed · at Health and Safety Level D~ unless site conditions dictate otherwise. All drilling will be performed with a truck mounted CME drill rig under the observation/guidance of the TCT staff geologist. The HSA borings will be advanced with a 7" O.D. hollow stem auger. Soil samples will bi collected in accordance with ASTM: 1586-84. Using this procedure, a 2" 0'D. split barrel sampler is driven into the soil by a 140 lb weight falling 30" After an initial se~ of 6", the number of blows required to drive the sampler an additional 12M is known as the penetratiOn resistance or N value. The N value is an index of the relative density of cohesionless soils and the consistency of cohesive soils. Split barrel samples will be collected continuously to the bottom of the holes. 2.3 Soil Classification As the samples are obtained in the field, they will be visually and manually classified by. the crew chief · in accordance with ASTM: D 2488-84. Representative portions of the samples will then be returned to the. laboratory for further examination and for verification of the field classification. Logs of the borings indicating the depth and identification of the various strata, the N value, water level information and pertinent I:uJIn ClC'~ :est:ina e'orl::~arardon Page 6-#4231 87-533 information will be prepared. Charts illustrating the soil classification procedure, the descriptive terminology and symbols used on the boring logs will be attached. ' ' The split barrel sampler will be cleaned between samples to minimize cross- contamination. The cleaning procedure will consist of a soap and water wash using a brush and tap water rinke. The soap and water will be changed regularly during the sampling. Additionally, all downhole drilling equipment and associated tools will be steam cleaned before any project work and cleaned between borings. 0 2.3 Monitoring Well Installation Water table monitoring wells will be installed in three of the borings in a manner consistent wi,th providing representative water samples from a given depth and location. The proposed monitoring well specifications and materials are Presented in Figure 2. Various subsurface soil and ground water Conditions may necessitate modifications. IN: 4231 87-533- lOB NO. LLATION OF MONITORING MONITORING WELL NO. MW- MARKER HEIGHT '2 L4 L3 L1= 4" L2= 10.0 Fl' L3:.15.0 r'"r L4= 2 5.0 INSTALLATION CO.~PLETED: DAT.- Time GROUND SURFACE ELEVATION TOP OF RISER ELEVATION (With Cap Removed) I~MANHOL E 1 2" J~I--VENTED CAP I~ .... '~neter And Type Steel )~---~ ~ Depth T ~,, Steel ~ Di~eter and Type ~THICKNESS AND TYPE OF SEAL DIAMETER AND TYPE OF RISER PIPE TYPE Of BACKFILL AROUND RISER THICKNESS AND TYPE OF SEAL DEPTH TO TOP OF FILTER SAND TYPE OF FILTER AROUND SCREEN TYPE OF MONITORING WELL SCREEN GAUGE OR SIZE OF OPENINGS {SLOT NO.) DIAMETER AND LENGTH OF SCREEN DEPTH TO BOTTOM OF MONITORING WELL DEPTH TO BOTTOM OF 'F1LTER SAND - THICKNESS AND TYPE OF SEAL Cement/Bentoni te Grout Mixture to Surface "Z 2" Flush Thread PVC Cement Grout 1' Bentonite Pellets 6.7' Sand Stainless 0.020" 2"x 15.0' 24.6' 25.0' . N/A Il DEPTH BELOW TOP OF RISER PiPE tlJJln C!~¥ I:~l:lna DIAMETER OF BOREHOLE MONITORING ,'ELL WATER LEVEL MEA:SURE,",iENT$ DATE { TI~,,E ! WATER LEVEL {]/I O~5[RVAT]Oi:S Page 8-#4231 87-533 Ail monitoring well materials will be steam cleaned prior to transport to the site. Additionally, all downhole drilling equipment and associated tools will be steam cleaned prior to use on the first monitoring ~ell boring and between subsequent borings. This is to minimize chances of introducing contamination into a monitoring well boring. Briefly, the water table monitoring wells will consist of fiush threaded, 2~ by 15' long, stainless steel~screens (#10 slot) with a 2~ riser pipe. The bottom of the screens will be set 6' to 8' below the water table. After the screen and riser pipe are set, sand will be placed around the screens and up to a depth of 1' to 3' above the top of the screen and the remainder of the hole will be filled with grout seal. Survey of Monitoring Wells Ail monitoring wells, borings, and appropriate surface water elevations will be surveyed. Grade elevations of the borings will be nearest 0.1' and top of riser pipe elevations will be nearest 0.01' The survey will be tied into the benchmark. Horizontal measurements Will be made to the nearest 2' determined to the determined to the nearest permanent ..I::U. lln ClL'~ t:eSl:lnc] Page 9-#4231 87-533 '2.5 Monitoring Well Development and Water Level Measurements We will develop the monitoring wells until pH, temperature, and conductivity stabilize. During this process, water is removed from the well and the above water quality parameters are measured every 5 minutes until three consecutive readings of the parameters stabilize. In addition, water level measurements are taken throughout development and for a period of time after development fs completed. This~ evaluation determines if the monitoring wells, are representative of aquifer conditions and serves to identify deficiencies which could affect recovery rates, static water levels, and representative sampling. 2.6 Water Quality Sampling Ail monitoring wells will be sampled from suspected cleanest to most contaminated according to the following protocols. All pertinent information will be recorded on a 'Sampling Information' form. .I:LLIIn CIL"V I:esClnCl Page 10-#4231 87-533 Field Protocol Step 1 - Measure water level. Step 2 - Develop monitoring well until pH, conductivity, and temperature stabilize. A dedicated Teflon bailer will be used to develop each 2" diameter well. A minimum of three to five well bore water volumes will be evacuated from each monitoring well prior to sampling. Ste~ 3 - Collect water samples. Water samples will be collected using a dedicated Teflon bailer. A field blank will be collected during the sampling program. Step 4 - Cool samples to approximately 4°C for transportation. Step 5 - Store water samples and transport to TCT, St. Paul, ~ollowing all documentation and chain of custody procedures. Step 6 - Clean equipment. Water level measuring equipment will be cleaned with clean tap water followed By deionized water rinse. Upon completion of a soil or ground water sampling, a chain of custody log will be initiated. The chain of custody will include the foil"owing information: project, work order number, shipped by, shipped to, suspected hazard, sampling point, location, field ID sample type, number of containers, signature(s), etc. number, date and time taken, analysis required, sampler(s) Page 11-#4231 87-533 The chain of custody records w~li be shipped with the samples to the laboratory. Upon arrival at the laboratory, the samples will be checked in and ~signed over to the appropriate laboratory personnel. Laboratory identification numbers will be noted on the chain of custody record. A copy of the chain of custody will be turned over to the project manager. Upon completion of the laboratory analysis, the completed chain of custody record will be returned to the project manager. 2.7 Laboratory Analysis of Water Quality The sample will be analyzed using a Perkin-Elmer Sigma 2B Gas Chromatograph equipped with a capillary column and flame ionization detector. Components are identified by retention time and quantified by comparison with a known standard using a HP 3388A data system. Samples will be analyzed for benzene, toluene, xylene, total hydrocarbons as gasoline, ethylene dibromide (ED~k, and tota~__grganic lead,. Ail data generated by the analyses are reviewed by the involves verifying that the appropriate analytical method was used, the superiorl This Page 12-#4231 87-533 detection level is appropriate, the proper number of significant figures is reported, and the calculations are correct. The validated data is given to the project manager who drafts the final report. The routine quality control procedures for organic and inorganic analysis are as follows: Reagent blanks accompany each set of samples. One field blank is included with each samPle. Once received back in the laboratory, the field blank is treated as an authentic sample and is used to monitor for contamination during transport and sampling. A laboratory blank is analyzed whenever a field blank indicates the possibility of contamination or whenever a new lot of solvent is first used. Ail samples, including blanks, are spiked with surrogate standards prior to extraction. The surrogate spikes are used to monitor the sample processing steps. The laboratory will analyze 10% of the samples in duplicate. Certified standard reference materials are analyzed on a quarterly.basis to verify comparability between laboratories. Page 13-#4231 87-533 3.0 PROJECT REVIEW Ail project data and interpretations will be reviewed by a professidnal<. geologist or engineer registered with the State of California. 4.0 REMARKS Please notify us at (612) '641-9372 regarding any suggested changes or additions to this proposal. This report was prepared by: Teri Miller Geologist Dated: February 25, 1987 This report was reviewed by: ' mental Geologist Senior Project Manager Dated: February 25, 1987 Proofread by: ~ FILE CONTEXTS SUMMARY PERMIT #: 0500~'~-- ENV. SENSITIVITY: ~-J Activity Date # Of Tanks Comments