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JDR Environmental August 10, 1995 Mr Tim Johnson Tosco Northwest Company 601 Union St , Ste 2500 Seattle, WA 98101 RE, Well Abandonment Praiect Thrifty Service Station 172 7647 Pacific Avenue Stockton, California Dear Mr Johnson This letter report is intended to document the results of the recent well abandonment project conducted at the above referenced site This report includes all pertinent information on the wells that were removed, including the onginal dnlling logs, former • well completion details, permits for abandonment, and specifics regarding the abandonment procedures On July 11 and 12, 1995, JDR Environmental conducted the well abandonment program at the site The site is owned by Thrifty Oil Company and was operated as a self-service station by BP Oil The site is located at 7647 Pacific Avenue in the City of Stockton (Figure 1) This work was required by the San Joaquin County Public Health Services/Environmental Health Division (PHS/EHD) as a preliminary task to site reconstruction The reconstruction activities will include removal of the existing tanks, replacement with new tanks in a separate but nearby area, and construction of a new market building The wells were located in areas that were targeted for these activities and there was concern that they might have been damaged dunng construction As a result, PHS/EHD requested removal of the wells prior to construction Six wells were abandoned as part of this scope of work, three vapor monitoring wells (VWA, VWB and VWC), and three groundwater monitoring wells (MW 1, MW2, and MW8) The vapor wells were installed in April 1994 as part of a site assessment investigation conducted by Thrifty Oil Company These wells were located in very close proximity to the tank cluster and were designed for use in a vapor extraction system The wells ranged in depth from 35 feet to 48 feet and were constructed of two-inch diameter PVC (310) 799-0084 7890 Spring St , Ste 15-H Long Beach, CA 90815