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i <br /> www secor com == <br /> (��� � n�D IN 3017 Kilgore Road,Suite 100 <br /> �`j^�(J \`,/// �y INTERNATIONAL Rancho Cordova,CA 95670 <br /> S E C ® R INCORPORATED 916-861-0400 TEL <br /> 916-861-0430 FM <br /> MAR 1 5 2006 <br /> ENVIRONMENT HEALTH <br /> PERMIT/SERVICES <br /> March 10, 2006 <br /> Mr. Mark Owens <br /> State Water Resources Control Board <br /> Underground Storage Tank Cleanup Fund. Program <br /> P.O. 'Box 944212 <br /> Sacramento, California 94244-2120 <br /> �Re: Request for 2006 Monitoring and Sampling and <br /> Remedial System Operation and Maintenance Cost Pre-Approval <br /> Commingled Plume Site#34 <br /> Chevron Service Station# 9-4275 <br /> .2905 West Benjamin Holt Drive <br /> Stockton, California <br /> Arco Service Station #2133 <br /> 2908 West Benjamin Holt Drive <br /> Stockton, California <br /> Commingled Plume Account, Claim No. CP0034 <br /> Dear Mr._Owens:. <br /> SECOR International Incorporated (SECOR), on behalf of Chevron Environmental <br /> Management Company (Chevron) and ARCO, submits this letter to the State Water <br /> Resources Control Board (SWRCB), Underground Storage Tank Cleanup Fund, <br /> requesting pre-approval of costs associated with quarterly monitoring and sampling and <br /> annual operation and maintenance of the air sparge system. <br /> Scope of Work <br /> In order to comply-with the RWQCB directives the following environmental services will be <br /> provided. <br /> • Quarterly monitoring of 29 wells, and quarterly ,sampling of 13 groundwater <br /> monitoring wells. <br /> • Semi-annual sampling of 9 groundwater monitoring wells. <br /> • Annual sampling of 7 groundwater monitoring wells. <br /> • Perform operation and maintenance of the ARCO remediation system. <br /> • Submit quarterly monitoring and sampling and remedial progress.reports. <br />