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0 <br /> COMPUTATION SHEET <br /> PROJECT TITLE: USA Service Station No. 65 PROJECT NO. 2007-0065-01 <br /> DESCRIPTION: Mass Emission rates SHEET 4 OF 4 <br /> PREP. BY: Kiran Nagaraju DATE: 11/2/2004 CHKD BY: G. Kowtha DATE: <br /> Mass emission rate is calculated based on the effluent air flow rate and efffluent concentrations. Since the influent <br /> flow rate is measured on the positive side of the blower,the flow rate is corrected for temperature only. In addition <br /> the effluent rate is estimated to be equal to the system influent air flow rate(includes dilution air, if any) <br /> Effluent air flow rate , acfm System influent air flow rate <br /> Temperature Corrected effluent flow rate Effluent flow rate " {460 R+68 F/(460 R+ Effluent temp°F)) <br /> = 46"((460 R+68°F)/(460 R+50°F)) <br /> = 47.62 scfm <br /> Calculation of mass emission rate for effluent TPHG= <12 mg/m3 and flowrate=47.62 scfm <br /> 47.62 ft3 12 mg Ib 1440 min m3 <br /> min m3 454000 mg day 35.3145 ft3 <br /> <0.009 lbs/day <br /> alculation of mass emission rate for effluent benzene=<0.12 mg/m3 and flowrate=47.62 acfm <br /> 47.62 ft3 0.12 mg Ib 1440 min m3 <br /> min m3 454000 mg day 35.3145 ft3 <br /> <0.0005 Ibslday <br /> Calculation of mass emission rate for effluent MTBE_ <0.12 mg/m3 and flowrate w 47.62 acfm <br /> 47.62 ft3 0.12 mg Ib 1440 min m3 <br /> min m3 454000 mg day 35.3145 ft3 <br /> _ <0.0005 lbs/day <br /> Calculation for estimating destruction efficiency: <br /> TPHG = {(64.42 Ib/day-0.009[b/day)/3.52 Ib/day) <br /> = '100% <br /> Benzene = {(0.053 Ib/day-0.0005 [b/day)/0.053 Ib/day) <br /> = >99.1% <br /> MTBE = {(0.038 Ib/day--0-.0005 Ib/day)/0.038 Ib/day} <br /> = >98.7% <br /> Source Test Calcs&Summary—October 2004 <br />