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I <br /> I <br /> MASS CALCULATIONS TPHg DISSOLVED IN GROUNDWATER <br /> Original Condition - January 16, 1998 <br /> A B C D E F G H I <br /> Zone Zone Soil Groundwater Tphg <br /> Area Thickness Volume Porosity Pore Volume Concentration TPHg Mass <br /> (sq ft) ft cu ft (cu ft) liters (ug/L Grams Pounds <br /> -ZONE 200 20 4,000 025 1,000 28,317 40000 1,133 250 <br /> B-ZONE 5,000 20 100,000 025 25,000 707,921 200001 14,158 3122 <br /> C-ZONE 12,0001 201 240,0001 025 1 60,000 1,699,011 t 50001 8,495 1873 <br /> TOTAL TPHU MASS <br /> C =A X B <br /> D =Assumed <br /> E = CXD <br /> F = EX2831685 <br /> G = Estimated avg based on analysis <br /> H = FXG11000 <br /> 1 = H1454 <br /> TPHg Total Petroluem Hydrocarbons as Gasoline <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 />