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! 0 0 CAMBRIA <br /> Table 2. Estimated Benzene Mass Remaining in Soil - Shell-Branded Station WIC 204-7524-2804, 4315 Waterloo Road, Stockton, California <br /> Depth Interval Contour Length Contour Width Adjusted Area Thickness Sod Volume Soil Mass Estimated Average Total Mass of Total Volume of <br /> (ft) (ft) (ft) (ft) (ft} (cu ft) (kg) Benzene Concentration Benzene Remaining Benzene Remaining <br /> (mg/kg) (kg) (gallons) <br /> 0-5 ft 38 8 304 5 1,520 79,784 039 0 031 0 011 <br /> 9 4 36 5 180 9,448 0 003 0 000 0 000 <br /> 11 5 55 5 275 14,435 27 0 039 0 014 <br /> 8 3 24 5 120 6,299 025 0 002 0 001 <br /> r <br /> 5-10 R irregular 85 5 425 22,308 0 013 ; 0 000 0 000 <br /> � <br /> 10-15 ft no benzene detected 'qr' <br /> 15-20 ft assumed circular 50 1 50 2,624 0 065 0 000 0 000 <br /> 50 1 50 2,624 05 0 001 0 000 <br /> 50 1 50 2,624 00065 0 000 0 000 <br /> 50 1 50 2,624 09 0 002 0 001 <br /> 20-30 ft 10 10 100 10 1,000 52,489 00041 0 000 0 000 <br /> 30-35 ft 10 10 100 5 500 26,245 00065 0 000 0 000 <br /> TOTAL 0 076 0 027 <br /> Notes and Abbreviations <br /> ft=feet Contour Length=Maximum Contour Length(ft) Sod Mass=Sod Volume(cu ft)x bulk density(g/cc)x 30 5A3(co/cu ft)x(1 kg/1000 g) <br /> cu ft=cubic feet Contour Width=Maximum Contour Width(ft) Ave Benzene Conc =Average of Benzene concentrations at the specified depth interval <br /> mg milligrams Adjusted Area=Area between contour intervals Benzene Mass Remaining=Sod mass(kg)x Ave Benzene concentration(mg/kg)11,000,000(mg/kg) <br /> kg W kilograms Sod Volume=length(ft)x width(ft)x depth interval(ft) <br />