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Removal of Product-Delivery lines November 5, 1990 <br /> Former Exxon Station No. 7-1050, Stockton, California AGS 30045-1 <br /> laboratory analysis, evaluating whether hydrocarbons were present at the limits of further <br /> excavation beneath piping trenches, and arranging for appropriate disposal of the soil <br /> removed by excavation. This report describes the work associated with the investigation, <br /> summarizes and discusses the analytical results obtained, and presents our interpretation of <br /> the results. <br /> BACKGROUND <br /> Site Description <br /> The site is on the northwest corner of the intersection of West Hammer Lane and Lower <br /> Sacramento Road in Stockton, California, as shown on the Site Vicinity Map (Plate P-1). <br /> The site is at an elevation of approximately 20 feet above mean sea level (United States <br /> Geological Survey, 1976). It is our understanding, based on information supplied by Exxon, <br /> that four underground storage tanks were formerly located at the site. We understand these <br /> tanks were used to store regular leaded gasoline, regular unleaded gasoline, extra unleaded <br /> gasoline, and waste-oil. According to conversations with personnel of Exxon, these <br /> underground storage tanks were removed from the site in 1986 and the site has <br /> 2 <br /> App/Zed GeoSystems <br />