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11 <br /> 61 <br /> T <br /> Mr Roland Brooks <br /> ` <br /> April 11, 1995 <br /> Page 2 <br /> y <br /> Mass emission rate (lbs/day) is calculated as follows <br /> lbs = gram * pmole * moles * 103mg <br /> day mole mole 106pmoles gm <br /> * 1 195 mole * 2 2046 * 10-`lb * 60mm * ft 3 * 24hr <br /> CF@60°F mg hr Mim day <br /> or <br /> lbs __ } mole ft3 <br /> * * 3 83 x 10' <br /> day mole mm <br /> where gram/mole — molecular weight (assumed to be 100 or C7) <br /> p mole <br /> mole J PPmav <br /> ft <br /> = 100 <br /> mm <br /> Concentrations of hydrocarbons in the extracted soil vent gas and catalytic oxidizer outlet <br /> were determmed by collecting a tedlar gas bag sample and analyzing the sample (see attached <br /> results). <br /> • <br /> BROWN AND CALDWELL <br /> 206sIC0RRF.SP&IARss.xPr <br />