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Table E-2: Mass of Contaminants Remaimng in Groundwater <br /> Plume Dimensions Porosity <br /> Clay=0.50 Average Contammant Conversion Conversion <br /> Year/ Length Width Thickness Sand=0 32 Concentration Factor 1 Factor 2 Mass <br /> Contaminant (feet) (feet) (feet) Silt=0 42 (µg/L) (L/fe) (lbs/µg) (lbs) <br /> 2005 <br /> MtBE 8 8 10 032 09 2832 450,000,000 0 0000116 <br /> Notes <br /> Calculation of Mass=(Length x Width x Thickness x Porosity x Average Contaminant Concentration x Conversion Factor 1)/Conversion Factor 2 <br /> Plume thickness estimated at maximum of l0 feet thickness <br /> ft3 = cubic feet <br /> L = liter <br /> lbs = Pounds <br /> MtBE = methyl tert-butyl ether <br /> Ag = micrograms <br />