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c � <br /> Ground Water Extraction Feasibility Work Plan <br /> Former STOCKTON PLATING Facility <br /> 632 South El Dorado Street, Stockton, California <br /> At the request of Mr. Richard Leland, Advanced GeoEnvironmental, Inc. (AGE) has prepared a <br /> ground water extraction feasibility work plan for the site located at 632 South El Dorado Street, <br /> Stockton, California (the site). The site setting is illustrated on Figure 1. Site structures and well <br /> locations are depicted on Figure 2. <br /> 2,0. BACKGROUND <br /> General background and remedial alternatives were presented in Corrective Action Plan-September <br /> 1995; additional soil and ground water analytical data has been included in subsequent quarterly <br /> reports. <br /> 2.1. SITE DESCRIPTION <br /> The site is located along Scotts Avenue in a relatively flat area of southwest Stockton, immediately <br /> south of Mormon Slough and east of the EI Dorado Street overpass. Local land use in the vicinity <br /> of the site is industrial and commercial. Residential areas are located approximately one-quarter <br /> mile south and east of the site. <br /> 2.2. UNDERGROUND STORAGE TANK REMOVAL <br /> AGE has been informed that two underground storage tanks (USTs) were removed from the <br /> property: one 1,000-gallon leaded gasoline UST was removed from the site in August 1986 and one <br /> 2,000-gallon unleaded gasoline UST was removed from the site in 1990. Petroleum hydrocarbons <br /> were detected in soil samples collected from beneath both USTs at the time of removals. Results <br /> of the UST removals were summarized in reports prepared by American Environmental Management <br /> Corporation(AEMC; 6 October 1986) and Condor Earth Technologies, Inc. (CET; 2 January 1991) <br /> 2.3. SITE ASSESSMENT/INSTALLATION OF GROUNDWATER MONITORING WELLS <br /> Over the assessment period, a total of eight ground water monitoring wells, numerous soil borings <br /> and soil vapor sampling points have been installed at the site, to assess the vertical and lateral extent <br /> of impacted soil and ground water. The following is a summary of milestone events at the site. <br /> • In September 1991, six soil borings were drilled at the site. Significant mass of hydrocarbons <br /> were detected in soil samples analyzed. <br /> Advanced Geo Environmental.Inc. <br />