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r <br /> 1 .0 Introduction <br /> ' This report has been prepared by BLACK & VEATCH Waste Science, Inc. <br /> ' (Waste Science) on behalf of the East Bay Municipal Utility District (District) <br /> Waste Science prepared this quarterly monitoring report for submittal to the San <br /> Joaquin County Public Health Services (SJCPHS) Environmental Health Division <br /> r <br /> 2.0 Site Description <br /> ' The Stockton Service Center is approximately 1,000 feet south of the Port of <br /> Stockton and the Stockton Deep Water Channel, at the intersection of West Main <br /> ' Street and Los Angeles Avenue, as shown on Figure 2-1 The Atcluson, Topeka, and <br /> Santa Fe Railroad is approximately one half mile south of the site and the San <br /> Joaquin River is approximately one mile southeast of the site <br /> The Stockton Service Center contains several buildings used for offices, garages, <br /> and storage, and two above ground storage tanks used for refueling vehicles. The <br /> ' adjacent streets, onsite building locations, former underground storage tank (UST) <br /> locations, and known subsurface utility locations are shown on the site map on <br /> ' Figure 2-2 <br /> ' 3.0 Project Summary <br /> ' In July 1987, the District removed one 1,000 gallon leaded gasoline UST from <br /> the Stockton Service Center. Petroleum hydrocarbons were detected in the soil <br /> beneath the east end of the tank A soil and groundwater assessment conducted by <br /> Kleinfelder, Inc (Kleinfelder) in May 1989 identified petroleum hydrocarbons in <br /> ' excess of detection limits in soil and groundwater in the vicinity of the former tank <br /> location This assessment included the installation of three groundwater monitoring <br /> wells, MW-1, MW-2, and MW-3, and four soil borings, B-1, B-2, B-3, and B-4 <br /> ' In September 1989, the District removed the two remaining USTs No <br /> 1Pindications of leakage from these tanks were observed and no petroleum <br /> ' 95R2 'East Bay Mumeipal Utility Diana <br /> 40429600\4thgtr gw 1 Stockton Service Center-Fourth Quarter 1994 <br /> r <br />