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x <br /> Chevron <br /> Chevron U.S.A. Inc. <br /> 2410 Camino Ramon,San Ramon, Califarnia•Phone 14151842-9500 <br /> Mai!Address:P.O.Box SON,San Ramon,CA 94583 U604 <br /> 1 Marketing Operations <br /> 0.M011er December 20, 1990 <br /> Manager,aperasiansS.L.Patterson <br /> Area Manage{Operations <br /> C.G.Trimbaoft f _ <br /> Manager.Engine2iing <br /> Mr. Harlin Knoll <br /> San Joaquin County Environmental Health <br /> F P. O. Box 2009 <br /> Stockton, CA 95201 <br /> # ,{ Re: Former Chevron SS#9-6I55 <br /> _$ 9474 Hwy. 99 and Morada Lane <br /> ` Stockton, CA 95201 <br /> x Dear Mr. Knoll: <br /> rr�Enclosed is a report prepared by Chevron's consultant, Dames and Moore, dated November 20, <br /> 1990, which describes soil remediation activity at the site referenced 'above. Gasoline <br /> r 'r contaminated soils were excavated and aerated on site until gasoline compounds in the soil were <br /> below laboratory detection limits. The clean soils were backfilled and compacted. <br /> Three groundwater monitoring wells installed in August 1989 showed no detectable amounts of <br /> gasoline contamination in the groundwater. Chevron's consultant,Alton Geoscience, sampled the <br /> wells again in November 1990. Alton's report should be expected in January 1991. If the water. -� <br /> samples again show no detectable amounts of contamination, then Chevron feels that this site i <br /> should be considered for closure. 1 <br /> If you have any questions or comments, please contact Clint Rogers at (415) 842-8658. <br /> Sincerely, <br /> C. G. TREMBACH . <br /> By <br /> Clint B. Rogers (/ r <br /> Environmental Engineer <br /> Cmt/jl:i'3-161 <br /> Enclosure <br /> i <br /> cc: Tom Peltier, Central Valley RWQCB ; <br /> Bette Owen, Chevron Properly Management I <br /> ,X <br /> r <br /> TM— 1JV <br /> �"TI OF ZS <br /> CANT BE <br /> OVER DUE T0, : r= , <br /> CONDITION. OF. THE ORIGINAL �; <br />