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r 0 <br />SECOR <br />March 5, 2002 Internationallncotporatecl <br />Project 77CH.43465.00.0170 <br />Mr. Sam Savig <br />San Joaquin County Public Health Services <br />Environmental Quality Division <br />304 E. Weber Avenue, Third Floor <br />Stockton, CA 95201-0388 <br />c <br />Re: Site Assessment Report and <br />Work Plan for Further Assessment <br />Chevron Service Station #9-2033 <br />508 West Charter Way, Stockton, California <br />N - <br />rJ '� <br />Dear Mr. Savig: <br />SECOR International Incorporated (SECOR), on behalf of Chevron Products Company <br />(Chevron), presents this Site Assessment Report and Work Plan for Further Assessment <br />for the above -referenced Chevron site (Figure 1). This document describes the <br />objectives of the work recently completed, background of the site, investigation <br />techniques, and findings and recommendations for future work. <br />OBJECTIVES <br />The objectives of the site assessment activities were to: <br />• Further evaluate on-site stratigraphy and assess water quality in three, <br />previously identified, water bearing zones. <br />• Assess the groundwater quality interactions between the upper, intermediate and <br />deep water -bearing zones, and; <br />• Provide a work plan for additional site assessment activities, based on the data <br />collected, consisting of drilling and installing five groundwater monitoring <br />wells (three deep, one intermediate, and one shallow), and destruction of <br />groundwater monitoring well MW -1. <br />SITE BACKGROUND <br />The site is an operating Chevron service station located in a primarily commercial area <br />at the southwest comer of the intersection of West Charter Way and South Lincoln <br />Street in Stockton, California. A former Texaco Service Station operates directly east of <br />the site (across Lincoln Street) and an operating ARCO Service Station is located <br />northeast of the site across the intersection of West Charter Way and South Lincoln <br />1AChewon\92033\REP0RTS\9-2033 SA CPT WPFA.doc <br />3017 Kilgore Road, Suite 100, Rancbo cordova, CA 95670 916.861.0400 916.861.0430 Fax www.secor.com <br />