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SECOR www.secor.com y <br /> ' INTERNATIONAL 3017 Kilgore Road,Suite 100 <br /> S E C O R INCORPORATED Rancho Cordova,CA 85670 <br /> 816-861-0400 TEL <br /> 816-861-0430 FAx <br /> CT 31 P112: 17 <br /> S�tic'JlJA r; <br /> :i'�IIar�1C12��,�2��� <br /> October 27, 2005 NLALTH [1EP�, rrA <br /> E14 T <br /> Mrs. Judy Reed <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 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 Mrs. Reed: <br /> This letter presented by SECOR International Incorporated (SECOR), on behalf of <br /> Chevron Environmental Management Company (Chevron) and ARCO, includes a <br /> proposal for additional site assessment. Additional site assessment was requested by the <br /> San Joaquin County Environmental Health Department (SJCEHD) in their letter dated <br /> March 7, 2005, and approved by the SJCEHD in their letter dated August 1, 2005 <br /> (Attachment 1). <br /> Scope of Work <br /> In order to comply with the RWQCB directives the following environmental services will be <br /> provided. <br /> • Permit, drill, and advance 11 soil borings, and convert one boring to a <br /> groundwater monitoring well. <br /> • Develop and sample the new monitoring well. <br /> • Submit well installation report. <br /> A detailed scope of work has been outlined in Work Plan for Soil and Groundwater <br /> Delineation and Addendum to Work Plan for Well Destruction and UST Removal, dated <br /> May 27, 2005 (Attachment 2). The work plan also discusses converting severs soil <br />