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Qiewron <br /> Y° -%0- Chevron <br /> Chevron U S A Products Company <br /> 6001 Bollinger Canyon Road <br /> September 3, 1994 Budding LSan Raman CA 94583 <br /> PO Box 5004 <br /> San Ramon CA 94583-0804 <br /> Ms Linda Turkatte 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#9-6465 5608 North Pershinja Avenue Stockton CA <br /> Attached groundwater monitoring report(GTI,6130194) <br /> Dear Ms Turkatte <br /> Please find attached a report dated June 30, 1994, which was prepared by Chevron's consultant, <br /> Groundwater Technology, Inc (GTI), to describe groundwater monitoring and sampling that was <br />• performed at the subject site on June 2, 1994 <br /> All three site-related monitoring wells were gauged and sampled The measured direction of <br /> groundwater flow during the June site event was toward the southeast The measured direction <br /> was inconsistent with previous measurements however, this was probably due to the fact that the <br /> top of casings were not resurveyed after recent wellhead repair work at wells MW-4A and MW-10 <br /> Despite the inconsistent measurement, Chevron believes the actual direction of groundwater flow is <br /> still toward the north-northeast, as it has been since 1991 <br /> Monitoring wells MW-4A, MW 10, and MW-11 were sampled and analyzed for the presence of <br /> TPHGas and BTEX There were no detectable concentrations of dissolved petroleum <br /> hydrocarbons measured at any of the three wells <br /> If you have any questions or comments, I can be reached at(510) 842-8695 <br /> Sincerely, <br /> /`7in � - >`Z:n— <br /> Brett L Hunter <br /> Environmental Engineer <br /> Site Assessment and Remediation <br />!' Attachment <br />