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mob = = M M Wl m 4r i M M M m mb _ M <br /> Benzene in Soil- Mass Calculations <br /> Based on parameters referenced under report Section 2 2 4 and estimate Benzene oncentrations in zones <br /> Original Condition -Pre-remediation <br /> A B C D E F G H I <br /> Zone Zone Soil Benzene <br /> Area Thickness Volume Density Soil Mass Concentration TPHg Mass <br /> (sq ft} (ft} (cu ft) (lbs/cu Ft) Pounds Kilograms (mg/kg) Grams Pounds <br /> A-ZONE 80 15 1,200 120 144,000 65,308 30 1,959 4 <br /> B-ZONE 85 25 2,125 120 255,000 115,650 6 694 2 <br /> C-ZONE 4,435 101 44,3501 1201 5,322,000 2,413,6811 0 51 1,207 3 <br /> TOTAL TPHG" lbs 9 <br /> C =AXB .� <br /> D =Assumed <br /> E=CXD <br /> F = E X 0 453529 <br /> G = Estimated avg based on analysis <br /> H = FXG11000 <br /> 1 = H1454 <br /> mg/kg milligrams/per kilogram <br /> As a result of limited data an error margin of at least 50 %should be assumed <br />