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IJEAI envrros. <br /> RIVICE <br /> 96 JUL 12 <br /> July 15, 1996 dm 10: 36 <br /> Mr. R. Jeff Granberry <br /> Shell Oil Products Company <br /> P O Box 4023 <br /> Concord, California 94524 <br /> RE: Quarterly Monitoring Report - Second Quarter 1996 <br /> Shell Service Station <br /> 4445 Pershing Avenue <br /> Stockton, California <br /> WIC #204-7524-2408 <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 Public Health <br /> Services <br /> Quarterly Monitoring & Sampling Summary <br /> Ground water monitoring and sampling for the second quarter of 1996 are summarized <br /> below <br /> Blaine Tech Services, Inc (Blaine) measured ground water levels and collected <br /> samples from Wells MW-1 through MW-4 on May 16, 1996 Samples were <br /> transported to Sequoia Analytical (Sequoia) of Redwood City, California for <br /> chemical analysis <br /> • Enviros, Inc (Enviros) evaluated water-level measurement data and prepared a <br /> ground water contouribenzene concentration map (Plate 2) <br /> • Ground water samples collected from Well MW-I through MW-4 were ND for <br /> TPPH and BTEX compounds MTBE concentrations ranged from ND to 16 ppb <br /> A ground water contouribenzene concentration map is presented on Plate 2 <br /> Enviros, Inc 270 Perkrns Street Sonoma California Tel 707/935 4850 <br /> P 0 Box 259 95476 0259 Fax 707/935 6649 <br />