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1 <br /> /�•y�* • �y <br /> � l L ,'L !-Tli <br /> 9V OCT 17 AW 5,� <br /> October 15, 1996 <br /> Mr. R. Jeff Granberry <br /> Shell Oil Products Company <br /> P 0 Box 4023 <br /> Concord, California 94524 <br /> RE: Quarterly Monitoring Report - Tbird Quarter 1996 <br /> Shell Service Station <br /> 7910 Lower Sacramento Road <br /> Stockton, California <br /> WIC #204-7524-0808 <br /> Dear Mr Granberry <br /> This Quarterly Monitoring Report describes the recently completed activities associated <br /> with ground water monitoring and sampling at the referenced site (Plates 1 and 2) This <br /> report was prepared to meet quarterly reporting requirements issued by the Regional Water <br /> Quality Control Board, Central Valley Region and San Joaquin County Environmental <br /> Health Division <br /> Quarterly Monitoring & Sampling Summary <br /> Ground water monitoring and sampling for the third quarter of 1996 are summarized <br /> below <br /> • Blaine Tech Services, Inc (Blaine) measured ground water levels and collected <br /> samples from three wells (MW-1 through MW-3) on August 20, 1996 Samples <br /> were transported to Sequoia Analytical (Sequoia) in Redwood City, California for <br /> chemical analysis <br /> • Enviros, Inc (Enviros) evaluated water-level measurement data and prepared a <br /> ground water elevation/benzene concentration map (Plate 2) <br /> • Ground water samples collected from Wells MW-1 through MW-3 were ND for <br /> TPPH and BTEX compounds, and contained MTBE in concentrations ranging <br /> from ND to 18 ppb <br /> I <br /> EnVIr08, fnc 270 Perkins Street Sonoma California Te{707/935 4850 <br /> P 0 Box 259 95476 0259 Fax 707/935 6649 <br />