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8720033A-CO'f-3 <br /> Vw.,odward-Clyde Consultants <br /> SOIL AND GROUNDWATER EVALUATION <br /> SHOP 10 AREA, CALIFORNIA DEPARTMENT OF TRANSPORTATION FACILITY <br /> 1603 SOUTH B STREET <br /> Aim <br /> STOCKTON, CALIFORNIA <br /> 1.0 INTRODUCTION <br /> This report describes the environmental investigation performed by <br /> Woodward-Clyde Consultants (WCC) of four underground fuel storage tanks at <br /> Shop 10 at the California Department of Transportation (CalTrans) facility <br /> s� <br /> at 1603 South B Street in Stockton. The State of California Office of the <br /> State Architect (OSA) executed Agreement number SA6378 and work order GST <br /> 655 in April 1987 to authorize WCC to conduct a site investigation to <br /> evaluate possible contamination of soil and groundwater by fuel and fuer <br /> ,., components. Under this work order, WCC completed four soil borings, <br /> installed four monitoring wells in the borings, developed and sampled theVat > <br /> wells, and submitted soil and water samples to an independent analytical <br /> laboratory. Work was performed at the site in late August, 1987. This <br /> report describes the work performed in the field, and summarizes and <br /> discusses the analytical results obtained by WCC to date. <br /> wo 2.0 BACKGROUND <br /> CalTrans Shop 10 is located at 1603 South B Street in Stockton, <br /> California. Four 5,000 gallon underground fuel storage tanks are located z <br /> west of the office building and south of the maintenance building, as shown t <br /> on the attached location map (Figure 1). Based on drawings provided by <br /> OSA, the tanks are about 7 feet in diameter and 18 feet long, and are <br /> buried in a cluster side by side with long axes parallel. The depth to the <br /> top of the tanks has not been determined, but is likely to range from 3 to <br /> 6 feet below ground surface. <br />