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CAMBRIA <br /> Table 6.Estimated Benzene Mass Remaining in Soil-Shell-branded Service Station,6131 Pacific Avenue, Stockton,California <br /> Soil Interval Impacted Soil Impacted Soil Soil Volume Representative Benzene Estimated Soil Total Impacted Total Residual <br /> Thickness Area Concentration Bulk Density Soil Mass Benzene Mass in Soil <br /> (tbg) _ (ft) (sq-ft) (cu-ft) (mg/kg) Ob/cu-ft) (lb) (lb) <br /> 0-18 <br /> Former UST Area 18 121 2,178 200 89.9 195,802 39.2 <br /> 18 115 2,070 50 89.9 186,093 9.30 <br /> 18 125 2,250 5.0 89.9 202,275 1.01 <br /> 18 157 2,826 0.50 89.9 254,057 0.127 <br /> 18 8 144 42.5 89.9 12,946 0.550 <br /> 18 28 504 5.0 89.9 45,310 0.227 <br /> 18 248 4,464 0.50 89.9 401,314 0.201 <br /> 18 1,367 24,606 0.050 89.9 2,212,079 0.111 <br /> Northem Dispenser Area 18 34 612 1.85 89.9 55,019 0.102 <br /> 18 86 1,548 0.50 89.9 139,165 0.0696 <br /> 18 150 2,700 0.050 89.9 242,730 0.0121 <br /> 18-33 <br /> Former UST Area 15 49 735 9.0 79.9 58,727 0.529 <br /> 15 186 2,790 5.0 79.9 222,921 1.11 <br /> 15 198 2,970 0.50 79.9 237,303 0.119 <br /> 15 302 4,530 0.050 79.9 361,947 0.0181 <br /> Northern Dispenser Area 15 114 1,710 0.34 79.9 136,629 0.0465 <br /> 15 373 5,595 0.050 79.9 447,041 0.0224 • <br /> 33-43 <br /> Former UST Area 10 164 1,640 35.5 79.9 131,036 4.65 <br /> 10 197 1,970 5.0 79.9 157,403 0.787 <br /> 10 286 2,860 0.50 79.9 228,514 0.114 <br /> 10 523 5,230 0.050 79.9 417,877 0.0209 <br /> Northem Dispenser Area 10 359 3,590 0.025 79.9 286,841 0.00717 <br /> 0854 Page t of 2 <br />