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SECOR www secorcom <br /> INTERNATIONAL 3475 West Shaw Ave Suite 104 <br /> S E C ® R INCORPORATED Fresno CA 93711 <br /> 559-271-2650 TEL <br /> 0 559-271-5108 FAX <br /> MD <br /> March 30, 2006 W Lr u'�u <br /> MAR ' 1 2006 <br /> Mr Harlin Knoll ENVIRONMENT Iir-ALTH <br /> San Joaquin County Environmental Health Department PERMIT/SERVICES <br /> 304 East Weber Avenue, Third Floor <br /> Stockton, California 95202 <br /> RE First Quarter 2006 Groundwater Monitoring Report <br /> Former Chevron Service Station 9-8632 <br /> 575 West Grant Line Road <br /> Tracy, California <br /> SECOR Project No 94CH 98632 01 <br /> Dear Mr Knoll <br /> SECOR International Incorporated (SECOR), on behalf of Chevron Environmental <br /> Management Company (EMC) provides this report summarizing the results of the first <br /> quarter 2006 (1Q2006) groundwater monitoring event at the above-referenced site (site) <br /> The site, currently occupied by a used car lot, is a former Chevron service station <br /> COMPLETED ACTIVITIES - FIRST QUARTER 2006 <br /> ■ Gettler-Ryan Incorporated (G-R) conducted quarterly groundwater monitoring and <br /> sampling of wells MW-1, MW-2, MW-3, MW-4, MW-5, MW-6A, MW-61B, and MW-7, <br /> ■ At the request of the regulator in charge, the analytes 1,2-dichloroethane (1,2-DCA) <br /> and ethylene bromide (EDB) were added by SECOR to the sampling protocol on <br /> February 27, 2006, and, <br /> ■ SECOR prepared and submitted the Fourth Quarter 2005 Groundwater Monitoring <br /> Report dated January 23, 2006 <br /> PLANNED ACTIVITIES - SECOND QUARTER 2006 <br /> ■ G-R will conduct second quarter 2006 (2Q2006) quarterly groundwater monitoring <br /> and sampling, <br /> ■ SECOR will prepare and submit 2Q2006 quarterly groundwater monitoring report, <br /> and, <br /> ■ SECOR will meet with San Joaquin County Environmental Health Department <br /> • (County) personnel to discuss future site activities <br /> N 1FfieslProjectslChevronlRetaiA#9-8632LPenodic Moratonngl20061IQMR2006 doc <br />