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MINTERNATIONAL TECHNOLOGY CORPORATION <br /> 1.0 Introduction <br /> 1.1 Site Location <br /> BP site #11192 is located at 1403 Country Club Boulevard in Stockton, California. (Figures 1 <br /> & 2). This is situated in Section 4, TIN, R6E (Mt. Diablo Baseline and Meridian). This site <br />' is in the southeast portion of the Sacramento-San Joaquin Delta in San Joaquin County, <br /> California. The area surrounding the site is mainly residential with eight schools located <br /> within a one mile radius. The nearest surface water is Yosemite Lake, approximately 1,300 <br /> feet to the east-southeast of the site. <br /> 1.2 Site History <br /> BP Station No. 11192 was built in 1976 and operated by Mobil Oil Company until it was <br /> purchased by BP Oil in May 1989. A soil gas survey was conducted at the station in March <br /> 1989 by 'Target Environmental Services, Inc. (for Mobil Oil Company) in order to facilitate <br /> the property sale. Results of this survey revealed moderately high concentrations of <br /> petroleum hydrocarbons southeast of the pump islands and along the eastern property <br /> boundary. <br /> In July 1989, 13" oil Med all unauthorized release fozn wiFh San Joaquin County based on <br /> results of the sail gas study. <br /> IT Corporation was contracted in October 1989 to generate and execute a work plan for initial <br /> site assessment. The work plan was filed with San Joaquin County Public Health Services in <br />' March 1990. Upon approval of the work plan in April, four monitoring wells were installed <br /> on site by representatives of IT Corporation. Analysis of soil and groundwater revealed the <br />' presence of petroleum hydrocarbons. <br /> In January 1991, the station closed for renovation. The tanks and dispenser islands were <br /> removed in February. A well (MW-2) was abandoned during construction efforts so that the <br /> new tanks could be installed in that location. <br /> M7/03-M9ZATST/0087M 1 <br />