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i �. 111111■ 1111111. <br /> MASS CALCULATIONS BENZENE DISSOLVED IN GROUNDWATER <br /> Original Condition - January 16, 1998 <br /> A B C D E F G H I <br /> Zone Zone Sol[ Groundwater Benzene <br /> Area Thickness Volume Porosity Pore Volume Concentration TPH Mass <br /> (sq ft) ft) (cu ft) (cu ft) liters (u IL) Grams Pounds <br /> -ZONE 120 20 21400 025 600 16,990 3500 59 013 <br /> B-ZONE 3,080 201 61,600 0 25 15,400 436,079 2000 872 1 92 <br /> C-ZONE 2,200 201 44,000 025 11,000 311,485 5001 156 0 34 <br /> .D-ZONE 8,600 201 172,000 0 25 43,000 1,217,625 601 73 01 <br /> jTOTALjP9i3 2 56 <br /> C =AXB2 <br /> D =Assumed <br /> E= CXD CUJ'� } <br /> F = EX2831685 <br /> G = Estimated avg based on analysis <br /> H = FXG11000 <br /> I = H1454 <br /> . _jl <br /> ug/L = micrograms per liter <br /> As a result of limited data mass calculation error may be as high as 50 percent or more <br /> Estimates were intentionally conserviative, based on the high side The probable error, therefore, <br /> more likely overstates the calculated mass than understates it <br /> k <br />