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Fs 1. SOIL <br /> a. Ori final Mass Contaminants = Concentration x density x <br /> volume <br /> 1 . Benzene . 27/106 x 56lbs/ft3 x 150, 000ft3 = 2. 27 pounds <br /> 2. Toluene . 18/106 x 56lbs/ft3 x 150, 00oft3 = 1. 51 pounds <br /> 3. Ethyl B . 75/106 x 56lbs/ft3 x 150 , 000ft3 = 6 . 3 pounds <br /> 4. Xylene . 15/106 x 56lbs/f t3 x 150 , 000ft3 = 1 . 26 pounds <br /> b. Final Mass Contaminants = Concentration x density x volume <br /> 1. Benzene . 14/106 x 56lbs/ft3 x 150, 000ft3 = 1. 2 pounds <br /> 2 . Toluene .09/106 x 56lbs/ft3 x 150 , 000ft3 = 0 . 76 pounds <br /> 3 . Ethyl B 0 . 38/106 x 56lbs/ft3 x 150 , 000ft3 = 3 . 2 pounds <br /> 4. Xylene 0 . 08/106 x 561bs/ft3 x 150 , 000ft3 = . 67 pounds <br /> 1. GROUNDWATER <br /> a. Original Mass Contaminants = Concentration x density x <br /> volume <br /> 1 . TPHG . 40/106 x 43lbs/ft3 x 2700ft3 = 0 . 05 pounds <br /> 2 . Benzene . 1/106 x 56lbs/ft3 x 2700ft3 = 0 . 02 pounds <br /> 3 . Toluene 0 . 11/106 x 56lbs/ft3 x 2700ft3 = 0. 002 pounds <br /> 4 . Ethyl B 0 . 09/106 x 56lbs/ft3 x 2700ft3 = 0 . 014 pounds <br /> 5 . Xylene 0 . 038/106 x 561bs/ft3 x 2700ft3 = 0 . 006 pounds <br /> 6 . MTBE 0 . 003/106 x 441bs/ft3 x 2700ft3 = 0 . 0004 pounds <br /> 12 <br />