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Subject: Unocal Service Station No. 5421 <br /> 7303 Pacific Avenue at Willora Road <br /> Stockton, California <br /> The site is located at the northwest corner of Pacific Avenue and Willora Road in Stockton, <br /> California. To meet 1998 UST standards, the USTs and product lines are being removed. <br /> In accordance with the Contingency Pian of file with San Joaquin County Environmental Health <br /> Division (SJCEHD) dated December 12, 1997, the following will be performed: <br /> 1) The removal of two gasoline and one waste oil underground storage tanks (USTs), related <br /> product lines, two hydraulic lifts, and one sand/water separator, 2) sampling of the soil beneath <br /> this equipment to evaluate the presence of petroleum hydrocarbons in soil at the site, and 3) <br /> overexcavation of petroleum hydrocarbon-impacted soil to a maximum depth of 25 feet below <br /> ground surface. Applicable permits for the removal of USTs and product lines will be obtained by <br /> Tosco's construction contractor prior to the start of any work. <br /> Work will be performed during weekday daylight hours. Earth moving equipment may include a <br /> backhoe, excavator, loader, and other equipment as appropriate. Excavated soils and debris that <br /> contains petroleum hydrocarbons will be temporarily stockpiled on-site for a maximum of 30 days <br /> and covered with plastic sheeting, or with approval from SJCEHD, hauled to Forward Landfill's <br /> holding cell for characterization prior to disposal at Forward Landfill. Excavation activities will <br /> be observed by SJCEHD and GSI representatives. Soil samples will be collected and analyzed per <br /> SJCEHD requirements. Upon receipt of sample results, GSI will prepare and submit to SJCEHD <br /> a letter report summarizing removal activities and sampling results. Work is anticipated to <br /> commence in January 1998. <br />