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i <br /> Chevron )T3 <br /> Chevron U.S.A. <br /> kik fi� �,?° .,+,mss rYaS.FfT <br /> fto, .S.A. Products Company <br /> 2410 Camino Ramon, San Ramon,California-Phone (510) 842-5500 APR 2 0 1992 <br /> Mail Address:P.O.Box 5004,San Ramon,CA 94583-0804 <br /> ENVIRON€ EN 7 fel,: HEALTH <br /> i H <br /> Marketing Department PERM 117SE i ICE'S <br /> April 14, 1992 <br /> Ms. Margaret Lagorio <br /> San Joaquin County Environmental Health <br /> P.O. Box 2009 <br /> Stockton, CA 95201 <br /> Re: Chevron Station#9-4275, 2905 West Benjamin Holt Drive, Stockton, CA <br /> Attached Summary Report of investigation and monitoring <br /> Dear Ms. Lagorio: <br /> Please find attached a report dated April 8, 1992, which was prepared by Chevron's consultant, <br /> Groundwater Technology Inc. (GTI), to summarize recent environmental assessment and <br /> monitoring activity at the subject site. In particular, the report describes the drilling, installation, <br /> and sampling of two groundwater monitoring wells (MW-6 and MW-7) and one vadose zone well <br /> (VW-1), and the report includes the results of a joint groundwater elevation measurement event <br /> with the nearby ARCO station. <br /> Chevron's consultant, Alton Geoscience (Alton), will schedule the third quarter groundwater <br /> monitoring event in July. <br /> If you have any questions or comments,I can be reached at(510) 842-8658. <br /> Sincerely, <br /> Clint B. Rogers <br /> Engineer, Site Assessment and Remediation <br /> Attachment <br /> cc: Elizabeth Thayer, Central Valley RWQCB, Sacramento, CA <br /> Chuck Carmel, ARCO Products Co., P.O. Box 5811,San Mateo, CA 94402 <br /> Steve Misner, Brown and Caldwell, 723 S St., Sacramento, CA 95814-7092 <br /> John DeGeorge, Alton Geoscience, Pleasanton, CA <br /> Jim Grasty, GTI, West Sacramento, CA (w/o attachment) <br />