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TABLE 21 RESULTS FOR BACKGROUND SOIL SAMPLES COLLECTED DURING THE REMEDIAL INVESTIGATION -METALS PG&E Former Tracy MGP Site Tracy, California V 7 7 7 +' d �' C E i E 3 Laboratory ° ° CU 0- ° °' ' c Sample Depth E y E o o a `6 c Y E > Sample ID Location Sample Date Work Order ca �' °' ` m p Matrix (feet bgs) p Q m ° s` U U J ° s N Number Q m U U o C > mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg BK-TR-1 Off-Site Soil 0.25 7/8/2008 08-07-0848 ND<0.750 9.43 239 0.649 0.584 33.4 13.1 30.4 10.4 ND<0.0835 ND<0.250 48.3 1.03 ND<0.250 ND<0.750 32.5 83.9 BK-TR-2 Off-Site Soil 0.25 7/8/2008 08-07-0848 ND<0.750 6.86 164 0.388 ND<0.500 24.4 7.63 29.6 11.6 ND<0.0835 ND<0.250 28.5 1.17 ND<0.250 ND<0.750 28.7 63.7 BK-TR-3 Off-Site Soil 0.25 7/8/2008 08-07-0848 ND<0.750 8.04 196 0.625 0.528 32.6 12.1 27.1 9.61 ND<0.0835 ND<0.250 45.7 1.05 ND<0.250 ND<0.750 31.6 61.7 BK-TR-4 Off-Site Soil 0.25 7/8/2008 08-07-0848 ND<0.750 1.85 51.5 ND<0.250 ND<0.500 4.78 3.64 5.48 2.78 ND<0.0835 ND<0.250 4.64 ND<0.750 ND<0.250 ND<0.750 16.7 20.0 BK-TR-5 Off-Site Soil 0.25 7/8/2008 08-07-0848 ND<0.750 7.85 186 0.501 1 ND<0.500 25.5 9.94 22.9 14.2 ND<0.0835 ND<0.250 1 35.8 1 1.09 ND<0.250fND<0.7501 27.3 59.7 Values in BOLD text are detected concentrations above the reporting limit ND< = Non Detect at Reporting Limit mg/kg = milligrams per kilogram Page 1 of 1