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WEISS ASSOCIATES Consulting In Geology 6 Geohydrology <br /> 2M McClure Stree4 Oakland, CA 94609 415-465-1100 <br /> 19 May 1987 <br /> Martin Thorpe <br /> Jim Thorpe Oil, Inc. <br /> P.O. Box 357 <br /> Lodi, CA 95241-0357 <br /> Re: Site Investigation <br /> WA Proposal No. 99-915 <br /> Dear Mr. Thorpe: <br /> Weiss Associates (WA) is pleased to submit this proposal for subsurface <br /> investigation at 204 E. Lodi Avenue, Lodi, California. The objective of the <br /> proposed work is to further define the extent of hydrocarbons in soil and <br /> ground water adjacent to and under a fuel storage tank excavation. <br /> On 23 January 1987, a 550-gallon underground fuel storage tank in the <br /> southeast corner of the Jim Thorpe Oil facility was excavated and removed by <br /> Jim Thorpe 011, Inc. The excavation was witnessed by Laurie Cotulla of the <br /> Environmental Health Division of the San Joaquin Local Health District <br /> (SJLHD) . Soil samples were collected during excavation. Analysis of the <br /> samples indicated the presence of hydrocarbons at 1400 parts per million (ppm) <br /> total fuel hydrocarbons (TFHC) , 18 ppm xylene and 270 ppm toluene. Ground <br /> water was encountered between 17 and 20 feet below grade during the tank <br /> excavation. We recommend the following workscope to further define the extent <br /> of hydrocarbons around the tank excavation: <br /> A Diulskn of Aguanema A4imld(cs Incorporated <br />