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TABLE 4B (concluded) <br /> Average Oil and Greasg Concentration in Soil(') <br /> Renown Enter2rises Site Investigation, Tracy, California <br /> Average <br /> Average Sample Average Sample Oil & Grease <br /> Location Depth (ft) Elevation (ft MSL) Concentration (MC/k91 <br /> Surface Soil Samples <br /> G1 0.0 52.5 10,500 <br /> G2 0.0 50.2 4,200 <br /> G3 0.0 47.5 2,000 <br /> G4 0.0 50.4 71,400 <br /> G5 0.0 50.7 2,800 <br /> Samples of Stockpiled Soil(4) <br /> B10 3.3 56.6 6,500 <br /> B13 3.5 55.7 5,400 <br /> B14 3.5 58.0 8.800 <br /> B17 3.5 56.9 815 <br /> B18 3.0 55.7 3,650 <br /> 19 3.5 57.5 7,450 <br /> B 57.5 13,100 <br /> B19 2 4.0 56.0 2,503 <br /> B2 5.8 <br /> B24 5.7 59.9 8,067 <br /> B4 5.3 59.5 1,453 <br /> B5 6.8 60.2 5,600 <br /> B6 8.3 58.8 15,000 <br /> B8 4.0 57.9 1,075 <br /> B9 4.3 55.0 6,320 <br /> Well Boring Samples(5) <br /> REW-1 10.7 42.8 - <br /> REW-2 11.3 41.2 19,800 <br /> REW-3 11.3 40.8 3,856 <br /> Notes: <br /> 1. Analyses performed by Curtis & Tompkins, Ltd. Analytical Laboratories <br /> of Berkeley, California. <br /> 2. Samples collected from soils at or below the average ground surface <br /> elevation of 52 feet MSL. <br /> 3. Samples collected by Dames & Moore during the Phase I Soils <br /> Investigation between August 22 and 30, 1988. <br /> 4. Samples collected from soils encountered in piles above the average <br /> ground surface elevation of 52 feet MSL. <br /> 5. Samples collected by Dames & Moore during the Phase II Groundwater <br /> Investigation on November 1 and 2, 1988. <br /> Not detected. <br /> a <br /> DWM/411lb/122b <br />