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+r. r <br /> i <br /> for sample "South Wall at 17"'. Based on the analytical results and field observations, <br /> the excavations successfully removed the two plumes of hydrocarbon impacted soil at <br /> the subject site. <br /> Non-detectable concentrations of TPHg and BTEX were also reported in a composite <br /> soil sample collected from the East Excavation "clean" stockpile. The composite soil <br /> sample collected from the West Excavation "clean" stockpile conta� ed 240 mg/kg of <br /> TOG. The East Excavation (location of the former gasoline UST)/Was backfilled with <br /> both clean native soil from the excavation and imported fill material. <br /> Based upon the results and conclusions outlined in the previous sections of this ? <br /> ? inP <br /> terim site remediation report, and conversations with Mr. Michael Infurna of the <br /> ounty. AGI recommends that a copy of this report be forwarded to the County <br /> requesting that no further excavation is necessary at the East and West Excavations. <br /> In addition, soil from the East Excavation "contaminated" stockpile (40 cubic yards), <br /> West Excavation "contaminated" stockpile (150 cubic yards), and West Excavation <br /> "clean" stockpile (100 cubic yards) should be profiled and transportedto-Eawazd—'�, <br /> Landfill, Inc. (FLI). Finally, upon County acceptance of the recommendations outlined <br /> above, AGI will oversee implementation of the recommended procedures; and submit <br /> a final report documenting the work and requesting closure of the two excavations. <br /> 2.0 Background <br /> The Toyota Town site is located at 2150 East Hammer Lane in Stockton, California as <br /> shown on Exhibit 1. <br /> 2.1 Facility Description <br /> The facility houses an automobile dealership comprising sales and service operations. r <br /> Previously located at the site were one (1) 2,000 gallon gasoline UST, its associated <br /> dispenser island and product lines, and one (1) 1 ,000 gallon UST for waste oil <br /> storage. The facility is shown to scale on Exhibit 2. <br /> 2.2 Project History <br /> On July 20, 1990, Semco 'removed a 2,000 gallon gasoline UST and a 1 ,000 gallon <br /> waste oil UST from the facility described above. Soil samples were collected beneath <br /> the east and west ends of both tanks. <br /> - 3 of 10 <br /> r <br /> r <br />