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WEISS ASSOCIATES Consulting in Geology F Geohydrology <br />2054 University Ave., Suite 301/Berkeley, CA 94704 415-644-3281 <br />23 June 1986 <br />Mr. Richard Zimmerman <br />Terminal Manager <br />ST Services <br />2941 Navy Drive <br />Stockton, CA 9-3205 <br />Re: ST Services Soil Sampling <br />Job # 86-204 <br />Dear Mr. Zimmerman, <br />In response to your May 20 request, this letter briefly describes <br />analytical results from soil and ground water sampling and discusses <br />recommendations for further investigation at the ST Seryices Terminal, <br />6h/ <br />Navy Drive, Stockton, California. <br />Two soil samples were collected about three feet beneath the waste oil <br />tank excavation and one water sample was retrieved from ground water migrating <br />into the excavation. Soil sample S1, from below the fill pipe end of the <br />tank, and the ground water sample were analyzed for total fuel hydrocarbons <br />(THCs), benzene, toluene and xylenes (BTX), polychlorinated biphenyls (PCBs) <br />and ethylene dibromide (EDB). Soil sample S2, from below the middle of the <br />tank, was held at the lab and not analyzed. THCs and BTX were analyzed by <br />ASTM Method D3328, PCBs were analyzed by EPA Method 608, and EDB was analyzed <br />according to California Recommended Methods Document AB 1803, page 301. <br />Analytic results are presented in Table 1. <br />A Division o/ AguaTierra Associates Incorporated <br />