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1140) <br /> ffi>0 -unNE SUMMARY <br /> Delta ---ironmenW Com,Inc. (Delta),has been ataOrized by Exxon Company,U.S.A. (Exxon), <br /> to observe the excavation of soil for a new underground storage tank (UST)basin at the former Exxon <br /> Service Station No. 7-3706, located at 2705 Country Chi Boulevard, Stockton, San Joaquin County, <br /> California. Soil has been impacted by petroleum hydrocarbons in an area adjacent and within the <br /> proposed tank basin location as assessed by sod sample analytical results from soil samples collected at <br /> the site. R is mated that approximately 150 cubic yards of soil containing petroleum hydrocarbons <br /> will be excavated during station construction activities. It is estimated that approximately 650 yards of <br /> soil will be excavated for the new tank basin. Dens has prepared a Soils Management Work Plan dated <br /> October 27, 1995, and submitted the plan to San Joaquin County Public Health Services, Environmental <br /> Health Services, Environmental Health Division. In addition, a supplement to the work plan dated <br /> November 20, 1995, has been submitted to PHS-EHD. The work plan and the supplement Proposed <br /> excavating an area of sod suspected of containing petroleum hydrocarbons and collecting soil samples <br /> fiom the limits of the excavation to confirm the excavation activities. The plan describes the disposition <br /> of soil generated and the disposition of ground water in the event that ground water infiltrates into the <br /> new tank basin and poses a construction problm to the installation of the new tanks. <br /> Soil generated from the excavates activities will be stockpiled on-site and removed within two weeks <br /> fry the day the soil was excavated. Excavation activities are scheduled to take place in December 1995 <br /> or within two wedm of approval from the PHS-END. Mw soil generated from the excavation activities <br /> will be manifested and haled to a permitted disposed facility (either Redwood Landfill, Inc. in Novato, <br /> California or BFI Waste Symms in Livermore, California). <br /> The limits of the excavation will be initially assessed based on field screening results. An organic vapor <br /> meter will be used to assess the presence of petroleum hydrocarbons. Soil samples will be collected from <br /> the siclewalls of the excavation fix laboratory analysis of petroleum hydrocarbons. The soil sample <br /> analytical results will be utilised to confirm that impacted soil has been excavated. Following field <br /> activities, a report will be gaserated presenting Delta's findings and laboratory analytical results. <br /> LXas.srs <br />