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, I <br /> I <br /> Chevron <br /> Chevron U.S.A. Inc. <br /> 2410 Camino Ramon,San Ramon, California•Phone 14151842-9500 <br /> Wo Mail Address:P.O.Box 5004,San Ramon,CA 94583-0804 <br /> Marketing Department <br /> i <br /> September 26, 1991 <br /> Ms. Margaret Lagorio <br /> San Joaquin County Environmental Health " 'X44 5P R!a <br /> V- Non Stockton,CA 95201 to <br /> P.O. Box 2009 <br /> .� ty <br /> OCT 0 4 IN <br /> ENVIRONMWr <br /> I <br /> Re: Chevron.Station#9-4275 f� �; lTf � �` aS <br /> 2905 West Benjamin Holt Drive, Stockton, CA <br /> i <br /> Dear Ms. Lagorio: <br /> Enclosed is a report dated August 30, 1991 which was prepared by Chevron's.consultant, Alton <br /> Geoscience (Alton), to describe groundwater monitoring which occurred on July 18, 1991 at the <br /> site referenced above. <br /> Groundwater gradient direction and levels of dissolved-phase hydrocarbons were consistent with <br /> previous observations at this site. <br /> Preparations are being made to resample the.BAT probes in conjunction with the regular quarterly <br /> groundwater monitoring which is scheduled to occur in mid-October 1991. <br /> If you have any questions or comments, you may contact me at(510) 842-8658. <br /> Sincerely, <br /> Clint B. Rogers <br /> Environmental Engineer <br /> Enclosure <br /> cc: Beth Thayer, Central Valley RWQCB, Sacramento,CA <br /> Chuck Carmel, ARCO=Products Co., P.O. Box 5811, San Mateo, CA 94402 <br /> John DeGeorge,Alton Geoscience, Concord, CA <br />