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f � <br /> en viros® <br /> i <br /> April 30, 1996 <br /> Mr. R. Jeff Granberry <br /> Shell Oil Products Company <br /> P O Box 4023 <br /> Concord, California 94524 <br /> RE: Quarterly Monitoring Report - First Quarter 1996 <br /> C M Weber Enterprises Property <br /> 141 North El Dorado Street <br /> Stockton, California <br /> WIC #204-7524-1509 <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 first quarter of 1996 are summarized below <br /> • Blaine Tech Services, Inc (Blaine) measured ground water levels and collected <br /> samples from Wells RW-1, RW-2, and MW-1 through MW-5 on March 27, 1996 <br /> Samples were transported to Sequoia Analytical (Sequoia) of Redwood City, <br /> California for chemical analysis <br /> • Enviros, Inc (Enviros) evaluated water-level measurement data and prepared a <br /> ground water contour map (Plate 2) Ground water flow is northeasterly at a <br /> calculated hydraulic gradient of 0 02 <br /> 0 All wells sampled were ND for TPPH and BTEX compounds A benzene <br /> concentration map is presented on Plate 2 <br /> • <br /> EnWros, Inc 270 Perkins Street Sonoma Cadiorma Tel 707/935 4850 <br /> PC Bax 259 95476 0259 Fax 707/935 6649 <br />