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rti.- <br /> E , �r, 3 �zzT a ( f�, �. raE , �� <br /> t Chevron <br /> 4E l.. FFF Al.. <br /> 7 P 1 <br /> 4, FEDU -Q, PM 2: Ii: <br /> Chevron U.S.A.Products Company <br /> 2410 Camino Ramon <br /> San Ramon,CA 94583 <br /> February 4, 1994 P0.Box 5004 <br /> San Ramon,CA 94583-0804 <br /> Marketing Department <br /> Ms. Mary Meays Phone 510 842 9500 <br /> San Joaquin County Environmental Health- <br /> P.O. Box 2009 <br /> Stockton, CA 95201 <br /> 'Re: Chevron Station#9-0557,139 South Center Street, Stockton, CA <br /> Attached additional assessment report(GTI, 1/21/94) <br /> Dear Ms. Meays: <br /> Attached is a report dated January 21, 1994, which was prepared by Chevron's consultant, <br /> Groundwater Technology Inc. (GTI); to describe results obtained during the installation of an <br /> additional offsite groundwater monitoring well on September.14, 1993. GTI's report also <br /> summarizes results obtained from groundwater monitoring performed at the subject site on <br /> November 22, 1993. <br /> Groundwater monitoring well MW-6 was installed to define groundwater contamination west of <br /> monitoring well MW-1. Soil sample results indicated detectable concentrations of both, toluene and <br /> xylenes at ten and twenty feet below ground surface. No other hydrocarbons were detected below <br /> these depths. Groundwater in MW-6 was sampled during the regularly scheduled quarterly <br /> sampling event for the subject site. <br /> The groundwater gradient direction measured during the November event was toward the <br /> southeast. Dissolved hydrocarbons-were detected in all monitoring wells except, MW-4. The <br /> measured levels were consistent with levels 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 /> ISAX <br /> Brett L. Hunter <br /> Environmental Engineer <br /> Site.Assessment and Remediation <br /> Attachment <br /> Hery�ic�d <br /> ���c:yalazt;i� <br />