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l-Y- <br /> Chemn- <br /> Chevron <br /> Chevron U.S.A. Products Company <br /> 6001 Bollinger Canyon Rd., Bldg. L <br /> October 20, 1994 P.O. Box 5004 <br /> San Ramon,CA 94583-0804 <br /> Site Assessment& Remediation Group <br /> f Phone (5101842-9500 <br /> Mr. Harlin Knoll <br /> San Joaquin County Public Health Services <br /> Environmental Health Division <br /> 445 North San Joaquin Street <br /> P.O. Box 2009 <br /> Stockton, CA 95201 <br /> Re: Former Chevron Service Station No. 9-0959 <br /> 103 W. Eleventh Str., Tracy, California <br /> Dear Mr. Knoll : <br /> Please review the enclosed workplan from Groundwater Technology dated October 14;,;1994 and <br /> the groundwater monitoring and sampling report from Sierra Environmental Services dated <br /> October.3, 1994. <br /> Groundwater Technology will install two additional monitoring-wells at the above-referenced site. <br /> Soil.samples will be collected at 5 foot interval and analyzed at a statc-certified laboratory for total <br /> petroleum hydrocarbons as gasoline'(TPH-G), benzene, toluene,,ethylbeinzene, and.xylene <br /> (BTEX). A reportdocumenting the investigation will-be sent to your office for review. <br /> In the most recent monitoring and sampling event, groundwater samples show relatively low levels <br /> of gasoline constituents in the groundwater. All monitoring wells have detected one or more <br /> { gasoline constituents. The detection of'BTEX constituents in MW-3 inaybe anomaly. <br /> If-the work plan meets your approval; please send a written letter. If you have any questions or <br /> E comments, please feel free to contact me at(510) 842-8752. <br /> f Sincerely, <br /> Chevron U.S.A. Products Co. <br /> a <br /> I <br /> Kenneth Kan <br /> Engineer <br /> LKAN/MacFile 9-0959R14 <br /> cc: Mr. Gordon Boggs, RWQCB-Central Valley Region <br /> .3443 Routier Road, Suite A, Sacramento, CA 95827-3098 OCT 2 5 1994 <br /> Mr. Bill Assad, Assad Insurance Agency ENVIRONMENTAL HEALTH <br /> P.O. Box 205, Tracy, CA' 35376 PERMITISERVICES <br /> Ms. Bette Owen, Chevron U.S.A. Products Co. <br /> . Fi��ye;Fsc! <br /> s�,N;yci�ksif= <br />