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1 <br /> 1 .0 Introduction <br /> nc(WaThis report has been prepared by BLACK & VEATCH Waste Science, In(- <br /> (Waste <br /> ste Science) can 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 /> ' 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 Watc,r Channel at the intersection of West Main <br /> ' Street and Los Angeles Avenue, as shown on Figure 2-1 The Atchison Topeka, and <br /> Santa Fe Railioad is approximately one halt Mile south of the site and the San <br /> ' Joaquin River i,, 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 subsurtace utility locations are shown on the site map on <br /> ' Figure 2-2 <br /> 3 0 Project Summary <br /> ' In Jul 1987, the District removed one 1,000 gallon leaded gasoline UST irom <br /> Y g .. <br /> the Stockton Service Center Petioleum hydrocarbons were detected in the soil <br /> ' beneath the east end of the tank A soil and groundwater msessment conducted by <br /> Kleinfelder, Inc, (Kleintelder) 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 /> indications of leakage from these tanks were observed and no petroleum <br /> 941:8 l,t,.t 13jv Municipal Utility District <br /> 4042-960013rdq[i ,,ry ] stockion ')LINKCCcntc[ fhirdUuoitc.a 1994 <br />