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SECOR ' <br /> International Incorporated <br /> March 28, 2001 <br /> Project 077 43501 110 <br /> Mr Ron Rowe <br /> San Joaquin County Public Health Services <br /> Environmental Quality Division <br /> 304 E Weber Avenue, Third Floor <br /> Stockton, CA 95201-0388 <br /> Re Site Assessment Work Plan <br /> Chevron Service Station 9-2033 <br /> 508 West Charter Way <br /> Stockton, California <br /> Dear Mr Rowe <br /> SECOR International Incorporated (SECOR) on behalf of Chevron Products Company <br /> (Chevron) presents this work plan for a site assessment at the site referenced above <br /> Figure I — Site Location Map presents the land uses and topography in the surrounding <br /> area Figure 2 — Site Plan provides a detailed map of the facility structures and <br /> improvements <br /> The work plan is being prepared as recommended in SECOR's Phase II site assessment <br /> report dated January 18, 2001 This work plan includes a brief discussion of objective, <br /> site background and previous investigations, the proposed scope of work, and schedule <br /> Field and laboratory procedures are presented in Attachment A <br /> OBJECTIVE <br /> The objective of the site assessment is to complete the evaluation of on-site stratigraphy <br /> through the use of cone penetrometer testing (CPT) technology Uses of this data <br /> include designing future well construction details and supporting a determination if <br /> groundwater monitoring wells MW-1 and MW-2 are screened across two separate <br /> water-bearing zones Based on the data collected f�Rhe CPT investigation, SECOR <br /> may recommend the destruction of MW-I and MW-2 and the installation of up to eight <br /> new wells <br /> i 1Chevron192033\REPORTSIfurther site assessment WP_RevA doe <br /> 3017 Kilgore Road, Suite 100, Rancho Cordova, CA 95670 916 861 0400 916 861 0430 Fax www secor com <br />