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I f 1117 Lone Palm Avenue <br /> Suite B <br /> ° Modesto, CA 95351 <br /> 209.579.2221 <br /> Fax 209.579.2225 <br /> A S S O C I A T E S I N C . <br /> February 28, 2000 <br /> 54.92054.0001 <br /> Ms. Carol Oz <br /> San Joaquin County <br /> Environmental Health Division <br /> 304 E. Weber Street, Third Floor <br /> Stockton, CA 95202 <br /> Subject: Workplan for Supplemental Subsurface Investigation at Eggiman's Hydraulic <br /> Garage at 1112 East Harding Way, Stockton, California <br /> Dear Ms. Oz: <br /> ATC Associates Inc., on behalf of Eggiman, Andrew and Edith Trust, has prepared this work <br /> plan for performing a supplemental subsurface investigation at the above referenced site. This <br /> work is required by the San Joaquin County Public Health Services, Environmental Health <br /> Division (PHS/EHD) as described in their correspondence dated February 11, 2000. <br /> The scope of work will include advancing one soil boring, soil and groundwater sample <br /> collection and analysis, and preparing a summary report. The scope of work is described in <br /> detail in the following paragraphs. <br /> SITE LOCATION <br /> The site is located on the south side of East Harding Way in Stockton, California, as shown on <br /> Figure 1. The property is located in a mixed residential, commercial, and industrial area. The <br /> site is currently occupied by a hydraulic repair facility. <br /> BACKGROUND <br /> Previous Investizations <br /> In April 1987, SEMCO removed and disposed of two 1,000-gallon regular gasoline underground <br /> storage tanks (USTs), associated piping, and fuel dispenser from the locations shown on Figure <br /> 2. A soil sample was collected from the end of each tank at approximately 17 feet below ground <br /> surface. Analytical testing indicated the collected samples contained detectable concentrations of <br /> petroleum hydrocarbon constituents. The excavation was subsequently backfilled to the ground <br /> isurface. Soil sample results are summarized in Table 1. <br /> wA920541reportslwkp-boring.doe I <br />