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1.0 INTRODUCTION/PREVIOUS WORK <br /> �.: This report is being submitted in response to a request by <br /> the Stockton Department of Public Works to conduct a site <br /> investigation on the grounds of the Regional Waste Water <br /> Control Plant Facility at 2500 Navy Drive in Stockton <br /> (Figure 1). <br /> It is our understanding that a 5000 gallon diesel tank was <br /> removed from this facility in August 1987 (Figures 2 and 3). <br /> Free product was noted floating on groundwater within the <br /> tank pit. A soil sample collected beneath the •tank at <br /> approximately 8 feet recorded 65 ppm total petroleum <br /> hydrocarbons as diesel. A cross sectional view of the tank <br /> pit as shown on Figure 6 is depicted on Figure 7. <br /> 4 . Previously excavated soils have been stored on-site adjacent <br /> to the tank pit as shown in Figure 3. <br /> 2.0 DATA REQUIRED BY THE REGIONAL WATER QUALITY CONTROL BOARD <br /> ` 2.1 Name and address of contact person: <br /> Contact Person: Jim Escobar <br /> r City of Stockton <br /> Department of Public Works <br /> n; City Hall <br /> Stockton, CA 95320 <br /> (209) 944-8282 <br /> ti. 2.2 Map showing site location, relative to nearby landmarks: <br /> The site location is shown on Figure 1. Features in the <br /> near vicinity of the underground tank are presented on <br /> Figure 2. <br /> 2.3 Sketch of site. <br /> A site plan is presented on Figure 3. <br /> 2.4 Layout of all tanks and piping systems properly labeled for <br /> content: <br /> Former tank and pump locations are shown on Figure 3. <br /> 1 <br /> i <br /> c�» <br />