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Subsurface Environmental investigation November 29, 1988 <br /> ARCO Service Station 76U, Lodi, California AGS 38048-1 <br /> constituents benzene, toluene, ethylbenzene, and total xylene <br /> isomers by EPA Method 8020, and gravimetric waste oil as <br /> petroleum oil by EPA method 503e. The sample was analyzed for <br /> chlorinated halocarbons by EPA Method 8010, polychlorinated <br /> biphenyls (PCB's) and the heavy metals chromium and lead, by <br /> Sequoia LaboratoriesofRedwood City, California. These analyses <br /> were requested by the San Joaquin Local Health District. <br /> Results of laboratory analyses are shown below in Table 1. The <br /> data indicates that hydrocarbon contamination of the soil is <br /> present in the pit below the former location of the waste-oil <br /> storage tank. The sample analyzed contained 1, 600 parts per <br /> million (ppm) waste oil, 530 ppm total petroleum hydrocarbons as <br /> diesel, 29 parts per million total petroleum hydrocarbons as <br /> gasoline, and 0. 69 ppm 1, 2 dichlorobenzene. PCB's were not <br /> detected by the analytical laboratory. Concentrations of heavy <br /> metals in the sample analyzed were below action levels set by the <br /> California Department of Health Services for chromium and exceed <br /> those <br /> D <br /> 5 <br /> Applied Geosysteins <br />