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CheVmn <br /> WO Chevron <br /> Chevron U.S.A.Products Company <br /> July 18, 1996 I�!(Idv1g111111 6001 Bollinger Canyon Road <br /> v-✓✓✓ )\�J� Building L <br /> San Ramon.CA 94583 <br /> J U L 2 2 1996 P0.Box 5004 <br /> San Ramon,CA 94583-0804 <br /> Mr.Michael Infurna <br /> San Joaquin County Environmental Health ENVIRONMENTAL HEALTH Marketing-Northwest Region <br /> P.O. Box 388 PERMIT/SERVICES Phone 510 842 9500 <br /> Stockton, CA 95201-0388 <br /> Re: Former Chevron Station#94054 2103 Country Club Blvd Stockton CA <br /> Attached Groundwater Monitoring Report(Blaine Tech,4/17/96) <br /> Dear Mr. Infurna: <br /> Please find attached a report dated April 17, 1996,which was prepared by Chevron's consultant,Blaine <br /> Tech Services, Inc. (Blaine Tech),to describe the results of groundwater monitoring that was performed at <br /> the subject site on March 26, 1996. <br /> During their March site visit,Blaine Tech gauged and sampled all twelve site-related wells. Groundwater <br /> elevations were the highest measured in site history. The measured direction of groundwater flow was <br /> toward the northeast under a hydraulic gradient of 0.009 ft/ft. All groundwater samples were analyzed for <br /> the presence of TPHGas and BTEX constituents.Detectable concentrations of dissolved hydrocarbons <br /> were measured at nine of the twelve wells. There were no detectable concentrations of dissolved <br /> petroleum hydrocarbons measured at wells MW-10 through MW-12. The measured concentrations were <br /> similar to those detected during previous site monitoring 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: Gordon Boggs, Central Valley RWQCB, Sacramento, CA <br /> Ron Berberian,2021 W.March Lane, Suite 2A, Stockton,CA 95207 <br /> Patrick Craig, 721 N.Union St., Stockton, CA 95205 <br /> Cliff Garratt,Terra Vac, 1651 Alvarado Street, San Leandro, CA 94577 <br /> Bette Owen, Chevron USA,Products Company, San Ramon, CA (w/o attachment) <br />