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5 <br /> f�7 <br /> collected from the native soil beneath the tanks. Groundwater was <br /> not encountered during the removal of the tanks. The samples <br /> collected from beneath the three gasoline tanks were analyzed for <br /> N:d <br /> Benzene, Toluene, Ethylbenzene, Xylene, Total Petroleum <br /> Fydrocarbons (TPH-Gasoline) , and the waste oil tank samples were <br /> tested for Gravimetric waste Oil. as Petroleum oil (Oil and <br /> t, Grease) , Cadmium, Chromium, Lead and Zinc (Metals) , Poly- <br /> Chlorinated Biphenyls (PCB) , Volitile Organics Compounds (CLHC) , <br /> anat Ethylene Dibromide (EDB) . <br /> Laboratory analyses of the gasoline tank samples revealed the <br /> „y presence of high concentrations of gasoline (2,600 ppm) in the <br /> soil beneath the former tank locations. The sample collected from <br /> beneath the waste oil tank dispayed negative results. See Table 1, <br /> and Appendix A. <br /> t-a <br /> `-' <br /> on July 12, 1990, 4 soil samples were collected after the <br /> removal of the product lines. The samples were tested for <br /> Benzene, Toluene, Ethylbenzene, Xylene, and Total Petroleum <br /> Hydrocarbons (TPH-Gasoline) . Analytical results revealed the <br /> presence of high concentrations of gasoline (3,1.00 ppm) . Free <br /> r. <br /> product was encountered in the product line trenches. <br /> A sample locatior diagram, lab data sheets and chain of <br /> custody documents are included in Appendix A. <br /> 2�0 PURPOSE <br /> The purpose of this workplan is to outline the pTe- <br /> liminary phases of work required to determine the vertical <br /> ETS ENVIRONMENTAL & ASSOC. <br /> - ---- _-_ -- PROJECT 305,-PAGE-72------ _ ---- <br /> I <br /> j-; <br />