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N <br /> 1.0 INTRODUCTION/PREVIOUS WORK <br /> This report is being submitted in response to a request by <br /> f the San Joaquin County Public Health Services, Environmental <br /> Health Division for further soil clean--up at Waterloo <br /> �~ School, 7007 North Pezzi Road, Stockton, CA (Figure 1). <br /> On November 21, 1989, hydrocarbon contamination of soil was <br /> detected during the removal of one 500 gallon underground <br /> gasoline tank at the project site ( Figure 2). The <br /> laboratory results are summarized on Table 1 and the soil <br /> r-- <br /> sampling report is located in Appendix I. <br /> 2.0 BACKGROUND TECHNICAL DATA <br /> 2.1 Site Location:_ Waterloo School <br /> 7007 North Pezzi Road <br /> Stockton, CA <br /> Contact Person: Mr. frank Hubbard <br /> Phone: (209) 946-0707 <br /> 2.2 Map showing site location, relative to nearby landmarks: <br /> The site location is shown on Figure 1. <br /> r, <br /> 2..3 Sketch of site. <br /> M" <br /> L A site sketch is presented on Figure 2. <br /> 2.4 Estimates of liquid quantity and composition leaked: <br /> No estimate of liquid quantity can be made with existing <br /> i..• information. The constituents detected in the soil sample <br /> are derived from gasoline. <br /> 2.5 Topography, geology, surface water, depth to groundwater: <br /> i , <br /> The site is situated on level ground comprised of <br /> �... Quaternary-Recent alluvial sediments. The water table lies <br /> L at about 95 feet below grade and flows west/southwesterly <br /> based on San Joaquin Flood Control and Conservation District <br /> data. The only surface water bodies within one-half mile of <br /> the site are irrigation canals. <br /> k <br /> i <br /> L 1 <br />