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Mr Seyed Sadredun <br /> December 8, 1993 <br /> Page 2 <br /> • <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 male * 2 2046 * 10-`Ib * 60mun ft 3 * 24hr <br /> CF@60°F mg hr min day <br /> or <br /> tbs = pmole * ,1`t' * 3 $3 x 10-4 <br /> day mole min <br /> where gram/mole = molecular weight (assumed to be 100 or C7) <br /> . } mole _ <br /> PPmdy <br /> mole- <br /> ft <br /> 3 = 100 <br /> mm <br /> Concentrations of hydrocarbons m the extracted soil vent gas and catalytic oxidizer outlet <br /> were determined by collecting a tedlar gas bag sample and analyzing the sample (see attached <br /> results) <br /> 7428\CORRESP,742$AIR„NO V <br />