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f _Tf1 <br /> B R o: W a D �'Crlf <br />{ C` A L D W E L L 10 <br /> f <br /> July 20, 1.994 <br /> . 1 <br /> Mr. Jim Woodard <br /> Operations Manager } <br /> ' SheIdon Oil Company <br /> 426 Main Street s <br /> Suisun, California 94585 017-1422-01/1 <br /> k Subject: Site Investigation and First Quarterly Groundwater Monitoring Report <br /> Kent's Oil Facility, Stockton, California ; <br /> Dear Mr. Woodard <br /> ' This report documents the construction, development, and sampling of the three <br /> }, , groundwater monitoring wells installed between May 4 and May 17, 1994, at the Kent's <br /> Oil facility, 3310 E. Miner Street, Stockton, California (Site). These wells were installed <br /> as part of the site closure activities currently being conducted by Sheldon Oil Company <br /> s (Sheldon) at the Site. The purpose of this investigation was to establish a groundwater <br /> monitoring -network for evaluating the groundwater quality, flow direction, and hydraulic } <br /> : gradient beneath the Site in the vicinity of the former underground storage tank (UST). <br /> The work plan prepared to conduct this phase of work was verbally approved by Mr. <br /> Michael Collins of San Joaquin County Environmental Health Department(County) during <br /> a April 28, 1994, telephone conversation between the County and Brown and Caldwell. <br /> The following work was performed under the terms and conditions of the August 31, 1992, <br /> Task Order Agreement between Brown and Caldwell and Sheldon Oil Company. <br /> Soil Boring <br /> Turner Explorations, Inc., a State of California licensed water well driller, drilled three soil <br /> borings (MW-1, MW-2, and MW-3) between May 4 and May 6, 1994, using a BK-81 <br /> mobile drilling rig equipped with 8-inch-diameter hollow-stem augers. The three soil <br /> borings were each drilled to a total depth of approximately 100 feet below ground surface <br /> � g <br /> This report was prepared in accordance with`the standards of the environmental consulting industry at the time <br /> it was prepared. It should not be relied upon by parties other than those for whom it was prepared, and then <br /> only to the extent of the scope of work which was authorized. 7his report does not guarantee that no additional <br /> environmental contarnination beyond that described in this report exists at the site. t <br /> i 4 221 R E P ORT SlQT R.R P r <br /> Environmental Engineering And Consulting.Analytical Services <br /> 9616 1Aicxou AVENUE, P.O. Bax 13449, SAC R.I.MENTO, CA 9.5313-3449 <br /> {9161444.0123 FAx (9161356-5277 <br />