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'A <br /> v <br /> TC1 <br /> A S S O C I A T E S I N C <br /> The same calculation for benzene with 24 5 liters of vapor per mole of benzene and a molecular <br /> weight of 78 grams per mole of benzene is shown below <br /> = f5ppmv + 33 ppmv) = 19 ppmv <br /> 2 <br /> ' = 19 0 1 benzene x 33 67 Wx 60 min x 28 321 air x 1 mole benzene x 78g x 1 Ib <br /> 1,000,000 1 air min hour 1 ft 24 5 1 vapor mole benzene 454 g <br /> = 0 0076 Ib benzene = 0 0304 lbs of benzene during the four hour test <br /> hour <br /> The same calculation for toluene with 24 5 liters of vapor per mole of toluene and a molecular <br /> weight of 92 1 grams per mole of toluene is shown below <br /> t = (110 ppmv + 51 ppmv) - 80 5 ppmv <br /> 2 <br /> = 80 5 1 toluene x 33 67 ft3 x 60 min x 28 32 1 air x 1 mole toluene x 92 1 a x 1 Ib <br /> 1,000,000 1 air min hour 1-F- 24 5 1 vapor mole toluene 454 g <br /> 0 03,113 Ib toluene = 0 1525 lbs of toluene during the four hour test <br /> hour <br /> The same calculation for ethylbenzene with 24 5 liters of vapor per mole of ethylbenzene and a <br /> ' molecular weight of 106 2 grams per mole of ethylbenzene is shown below <br /> = (35 ppmv + 23 ppmv) = 29 0 ppmv <br /> ' 2 <br /> = 29 0 1 ethylbenzene x 33 67 ft3 x 60 min x 28 32 1 air x 1 mole ethylbenzene x 106 2 g x 1 Ib <br /> - 1,000,000 1 air min 1 hour 1 P- 24 5 1 vapor mole 454 g <br /> - 0 01584 Ib ethylbenzene = 0 0634 lbs of ethylbenzene during the four hour test <br /> hour <br /> ' The same calculation for per vapor xylenes with 24 5 liters of mole of xylenes and a molecular <br /> Y P P Y <br /> weight of 106 2 grams per mole of xylenes is shown below <br /> = 0 80 ppmv + 120 ppmv) = 150 00pp my <br /> 2 <br /> = 150 0.1 xylenes x 33 67 ft3 x 60 min x 28 32 1 air x 1 mole xylenes x 10,6 2 g x 1 Ib <br /> 1,000,000 1 air min 1 hour 1 ft 24 5 1 vapor mole 454 g <br /> ' = 0 08193 Ib xylenes = 0 3277 lbs of xylenes during the four hour test <br /> hour <br /> 10 <br /> w 162377\mportslnfs doc <br />