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r <br /> Tosco Marketing Company 2 <br /> Circle K P8671 8606 Thornton Road,Stockton,CA Jul;22,1998 <br /> Remedial Activities - Over-excavation <br /> During product line and dispenser replacement activities, approximately 21 tons of <br /> contaminated soil was over-excavated from the product line and dispenser excavations <br /> Soil beneath the product lines and dispensers in selected locations was excavated from <br /> depths of 3 to 9 feet bgs <br /> Stockpiled Soil Removal <br /> Approximately 21 tons of soil generated during the removal of the underground facilities <br /> described above were stockpiled onsite The soil was hauled by Den Beste Trucking of <br /> Windsor, California on May 18, 1998 for disposal at Forward Landfill in Manteca , <br /> California Six discrete samples collected from the product line trenches prior to the soil <br /> being excavated were used for characterization of the soil prior to disposal as approved <br /> by Mr Harlin Knoll of SJCEHD Product line excavations soil analytical data is <br /> presented In Table 1 <br /> Stockpiled Pea Gravel - Above USTs <br /> Approximately 50 yards of pea gravel generated during the uncovering of the tops of the <br /> USTs were stockpiled onsite The tops of the USTs were uncovered to install new <br /> overfill protection on the existing USTs SECOR collected one composite sample (4 <br /> sleeves to 1 sample) from the pea gravel on May 18, 1998 Analytical results of the pea <br /> gravel were non detect for all constituents Based upon the sample results, and with <br /> approval from Mr Harlin Knoll of the SJCEHD, the pea gravel was re-used as backfill <br /> onsite Stockpiled pea gravel analytical data is presented In Table 2 <br /> If you have any questions or comments regarding this letter, please feel free to call us at <br /> (916) 364-1880 <br /> Sincerely, <br /> SECOR International Incorporated <br /> A4 <br /> Rusty osky <br /> Project Engineer <br /> Jo Bower v.Goss <br /> Senior Geologist o <br /> RG 6065 <br /> CAS-,�O <br /> I <br /> 7G88M 10-01/PLJL L..DGC <br />