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r"m <br /> 821L AS§rSSMNT ItELATED TO <br /> k ' <br /> i� <br /> is <br /> G <br /> r� FOVAL OF UNDERGROUND_TA_i K S <br /> 810 tyaet Charter Way,Stockton,California <br /> Deltz Project No.40-88-688 <br /> Page 2 <br /> 0 Collect soil samples, using standard protocol, for description and classification <br /> purpose: and for chemical analysis by a state-certified laboratory. <br /> o Use a photoionizalion detector(PID)to screen soil samples for total organic vapors. <br /> 0 Submit selected sail samples for chemical analysis. <br /> o Analyze selected soil samples for total petroleum hydro carboaf(TPH)by EPA Melhod <br /> 8015. Those samples with TPH concentrations exceeding 100 parts per million(ppm), <br /> will be analyzed for benzene, toluene, ethylbenzene, and xylenes (BTEX) by EPA <br /> Method 8020. <br /> 0 Prepare a report of our findings with recommendations. <br /> -2.0 BACKGROUND INFORAIAT[4�1 <br /> S_Site Settln� <br /> The site is an operating Shell Service Station. The site is located at 620 West Charlet Way in <br /> Stockton, California, (TIN, R6EI, M.D.M,) (Figure 1). Records of the San Joaquin Count; <br /> Assessor's Office indicate that this is parcel number 155-040-07 and that the land is owned by Shell <br /> Oil Company. Shell's regional reprzscntative is Mr. Darrell Robinson, Senior District Engineer, <br /> Pacific Northwest District, 100 Howe Avenue,Suite 160N, Sacramento,California. <br /> k <br /> I <br /> The site is located in a commercial/retail district. Adjacent businesses include a restaurant and a <br /> motel. <br /> 2 sl a History <br /> .; T1Ec ciii5ji�eg retail gasuiinc outlet was constructed in 1971. Figure 2 illustrates existing buildings and <br /> facilities at the site. Three underground gasoline storage tanks and a waste oil storage lank were <br /> j installed M this time. The original waste oil tank was removed in 1987 and replaced with a dual- <br /> walled waste oil tank. Vapor recovery lines were installed in 1975 and new product-distribution lines <br /> were installed in 1978. Pertinent storage tank data is contained in Table 1. <br /> 1 <br /> i <br />