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Chevron <br /> Chevron <br /> Chevron Products Company <br /> March 3, 1997 MAR 0 5 1997 6001 Bollinger Canyon Road <br /> Building L <br /> San Raman,CA 94583 <br /> ENVIRONMENTAL HEALTH P.O.Box 6004 <br /> PERMIUSERVICES San Ramon,CA 94583-0904 <br /> Mr. Michael Infurna <br /> San Joaquin County Environmental Health Marketing-Sales West <br /> P.O.Box 388 Phone 510 842-9500 <br /> Stockton, CA 95201-0388 <br /> Re: Former Chevron Station#9-4054 2103 Country Club Blvd Stockton CA <br /> Attached Groundwater Monitoring Report(Blaine Tech, 9/26/96) <br /> Dear Mr. Infurna: <br /> Attached you will find a report dated September 26, 1996,which was prepared by Chevron's consultant, <br /> Blaine Tech Services, Inc. (Blaine Tech),to describe the results of groundwater monitoring that was <br /> performed at the subject site on August 22, 1996. <br /> During their May site visit,Blaine Tech gauged and sampled all twelve site-related wells. The measured <br /> direction of groundwater flow was generally toward the west under a hydraulic gradient of 0.01 ft/ft. <br /> These flow conditions are unusual for the subject site and will be confirmed during the next monitoring <br /> event. All groundwater samples were analyzed for the presence of TPHGas and BTEX constituents. <br /> Samples were also analyzed for various ions to evaluate the potential for intrinsic bioremediation. The <br /> measured concentrations of dissolved hydrocarbons were consistent with those detected during previous <br /> site monitoring events. There were no dissolved hydrocarbons detected at wells MW-10,MW-I1, and <br /> MW-12. <br /> The results of the intrinsic bioremediation evaluation will be presented as soon as they become available. <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 /> Bette Owen, Chevron Products Company, San Ramon, CA (w/o attachment) <br />