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i <br /> " . Chevron <br /> MON <br /> Chevron <br /> Chevron U.S.A.Products Company <br /> 6001 Bollinger Canyon Road <br /> September 3, 1994 Building L <br /> p San Ramon,CA 94583 <br /> P.O.Box 5004 <br /> San Ramon,CA 94583-0804 <br /> Ms. Mary Meays Marketing—Northwest Region <br /> San Joaquin County Environmental Health Phone 510 842 9500 <br /> P.O. Box 2009 <br /> Stockton, CA 95201 <br /> Re: Chevron Station#9-6171, 6633 Pacific Avenue, Stockton, CA <br /> Attached groundwater monitoring report(Sierra, 7/22/94) <br /> Dear Ms. Meays: <br /> Please find attached a report dated July 22, 1994, which was prepared by Chevron's consultant, <br /> Sierra Environmental Services (Sierra), to describe groundwater monitoring performed at the <br /> subject site on June 16, 1994. <br /> During Sierra's June site visit the measured direction of groundwater flow was toward southeast. <br /> All six site-related wells were sampled and analyzed for the presence of TPHGas and BTEX <br /> constituents. Detectable concentrations of petroleum hydrocarbons were measured at all wells. The <br /> measured concentrations were consistent with those detected during previous site monitoring <br /> events. <br /> If you have any questions or comments, I can be reached at(510) 842-8695. <br /> Sincerely, <br /> Brett L. Hunter <br /> Environmental Engineer <br /> Site Assessment and Remediation <br /> Attachment <br /> cc: Elizabeth Thayer, Central Valley RWQCB, Sacramento, CA <br /> Wilbur Smith II, Sims-Grupe Mgmt.,374 Lincoln Center, Stockton, CA 95207 <br />