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I <br /> I <br /> I <br /> I <br /> SITE ASSESSMENT WORK LAN <br /> 3245 North Wilson Way <br /> Stockton, California <br /> February 1994 <br /> i <br /> it <br /> I <br /> 1.0 INTRODUCTION <br /> I <br /> In accordance with Appendix A of the Tri-Regional Board Guidelines for the investigation <br /> of underground storage tank sites, Geological Audit Servih es (GeoAudit) has prepared this <br /> work plan to assess the property located at 3245 North��Wilson Way for evidence of soil <br /> contamination related to past storage of petroleum products at the site. The history of the <br /> site, previous investigations, and proposed investigation are discussed in the following <br /> sections. <br /> II <br /> 2.0 BACKGROUND <br /> Don's Buggie Shop is an automotive service facility speci�4lizing in Volkswagen repair. It is <br /> our.understanding that a 1,000-gallon underground storage tank (UST) containing regular <br /> gasoline was removed from the site by AAA Tank l.eAval in February 1991. Two soil <br /> samples were collected from beneath the tank, and two -samples were collected from the <br /> product line trench. Total- petroleum hydrocarbons in the gasoline range (TPH-g) were <br /> reported at concentrations of 2,200 and 6,600 mg/kg (ppm) in the tank samples, and <br /> ethylene dibromide (EDB) was also detected at elevated levels. Volatile aromatic <br /> hydrocarbons (benzene, toluene, ethylbenzene, and xylene)were present in the tank samples <br /> and in one of the product line samples. it <br /> n <br /> One liquid sample was also obtained from the sump loIcated south of the building. 'Phis <br /> sample was analyzed for oil and grease (EPA method 5520), BTE&X (EPA method 602), <br /> and chlorinated hydrocarbons (EPA method 601). Contar�iinants were detected in each of <br /> these analyses, according to laboratory reports provided by San Joaquin County Puglic <br /> Health Services - Environmental Health Division (PHS/E.HD). <br /> I <br /> In order to obtain financing for site improvements, the ow'i er of the property (Don Morris) <br /> has requested further investigation of the reported contamination. <br /> 3.0 PROPOSED ASSESSMENT <br /> Due to time constraints imposed b financial negotiations, . eoAudit recommends a limited <br /> p Y <br /> drilling program and rapid laboratory analysis to gather reliminary data on the vertical <br /> Ge14.1 Audit S—i—,Ina 1 <br /> Doa'.Bugsie WP2-94M2.S <br /> I <br /> I <br /> I <br />