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.. %lo / <br /> I n�roQ rets Tt:.A-T -n4 c Two c,t.c>.t es T <br /> wq.Ls Awz Iov ' TbWL PCSP`N• F L201E <br /> ❑�® GROUNDWATER L-07 ^nom VwQw +F YOJ Nes' my."144- <br /> TECHNOLOGY, 1NC 5:"C_' <br /> ❑ ❑ OIL RECOVERY SYSTEMS 1832 Tribute Road, Suite G, Sacramento, California 93815(916)921-1800 <br /> e s g = .5, <br /> a a� <br /> �.C_ FINED <br /> June 24 , 1987 .l...r'�.� � <br /> Project No . 202175-3284 JUIN 301987 <br /> EA ENGTNFERINC.,SCM710E. AND <br /> B'1::S'Tl::�;l:L:GIU>:AL,:'•;:XATION9 <br /> Mr . Darrell Hovander <br /> Chevron USA, Inc . <br /> 2 Annabel Lane , Suite 200 <br /> San Ramon , CA 94583 <br /> RE : Chevron Service Station No. 7780 <br /> ,"eckton , California <br /> Dear Mr . Hovander : <br /> Enclosed are laboratory results of the soil samples <br /> collec}fed from the material excavated from the tank pit and <br /> information on well locations within one mile of the former <br /> Chevron Service Station No . 7780 , located at 3246 East Fremont <br /> Street , Stockton. California. <br /> Soil samples were obtained at approximately five feet below <br /> the soil pile surface with a hand operated auger . The samples <br /> were collected at six points from the pile and composited to form <br /> -� two samples for laboratory analysis . These were sealed, capped , <br /> packed on ice in an insulated. cooler and transported under <br /> chain-of-custody to GT Environmental Laboratories for analysis . <br /> The two composite 'samples were analyzed for total hydrocarbons <br /> (THC) , and benzene. toluene , and xylene (BTX) using EPA methods <br /> 5036 . 0020, and 8015 . Results from the soils analyzed recorded <br /> no concentration of THC or BTX above the analysis method <br /> detection limit of 0 . 5 parts per million (ppm) (see Appendix 1 , <br /> Laboratory Analysis Results) . <br /> A survey of water wells located within a one-mile radius of <br /> the site was performed using available data collected from the <br /> California Department of water Resources . Review of this <br /> Information 'indicates that within a one-mile radius of the site , <br /> there are three municipal wells and eleven domestic wells . The <br /> closest well is a• domestic well which is located approximately <br /> 1000 feet north and down gradient of the site . The closest <br /> municipal well is located approximately 2500 feet to the east and <br /> cross gradient of the site (see Figure 1 , Well Location map) . <br /> Offik s Amwahmt the U.S., Canada a»d Overwo <br /> Wiamm qMm 1x:Orr wrd.CA; 7brmnw. CA:EhOn+oad, 00;7*emw.AZ <br />