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WORK PLAN FOR SOIL VAPOR EXTRACTION_PILOT TEST <br /> September 1995 <br /> Franklyn Cole Properties <br /> 7505 West Linne Road <br /> Tracy, California <br /> 1.0. INTRODUCTION <br /> In accordance with a request from Mr. Franklyn Cole, Advanced GeoEnvironmental, Inc. (AGE) has <br /> prepared this Work Plan for the drilling and installation of soil vapor extraction wells and the <br /> performance of a soil vapor extraction pilot test at 7505 West Linne Road in Tracy, California(the <br /> site). The pilot test is performed in accordance with accordance with requirements of the San <br /> Joaquin County Public Health Services -Environmental Health Division (PHS-EHD) and California <br /> Code of Regulations Title 23 guidelines for feasibility evaluations of contaminated underground <br /> storage tank (UST) sites. The location of the site is illustrated on Figure 1; a plan of the site is <br /> illustrated on Figure 2. <br /> 2.0. BACKGROUND <br /> 2.1. SITE LOCATION <br /> The site is located at the northwest corner of the intersection of Chrisman Road and Linne Road in <br /> a flat ruraVagricultural area southeast of Tracy, California, in San Joaquin County. Jefferson School, <br /> is located across the intersection southeast of the site. <br /> 2.2. UNDERGROUND STORAGE TANK REMOVAL <br /> Two 1,500-gallon USTs, piping and dispensers were removed from the property in October 1993. <br /> Soil samples collected from beneath the dispenser at a depth of six feet indicated that total petroleum <br /> hydrocarbons quantified as gasoline(TPH-g)and volatile aromatics (benzene, toluene, ethyl benzene <br /> and xylenes: BTE&X)were detected at concentrations up to 48,000 mg/kg (parts per million: ppm): <br /> 2.3. SITE ASSESSMENT <br /> On 12 August 1994,two borings were drilled by Geological Audit Services, Inc. (GeoAudit) in the <br /> area of the former fuel dispenser island. TPH-g was detected at concentrations up to 13,000 ppm <br /> and hydrocarbons were encountered to depths of 35 feet. <br /> On 22 February 1995, two additional borings(borings B3 and B4)were drilled north and south of <br />