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Tap 7 <br /> . Thermal Oxidizer Destruction Effi cy and Emission Rate Calculations <br /> Cohn Property <br /> 3755 Munford Avenue <br /> Stockton, California <br /> Meter Stack Flow <br /> Date Rate Stack Sample Results mv) Emission Rates lb/da Destruction Effclenc % <br /> Hours scfm TPH Benzene TPH Benzene TPHg Benzene <br /> 8/24105 1765 <br /> 912105 3949 148 <50 062 000 003 1000 973 <br /> 10/10/05 6307 171 <50 <0 050 000 000 1000 1000 <br /> 1117105 8152 172 <50 <0 050 000 000 1000 1000 <br /> 12/12/05 1,6258 168 <50 <0 050 000 000 1000 1000 <br /> 119106 2,0752 184 <50 <0 050 000 000 1000 1000 <br /> 216106 2,7485 179 <50 <0 050 000 000 1000 1000 <br /> 3123106 3,6798 208 <5 0 <0 050 000 000 1000 1000 <br /> Note 1 "<" Indicates analytical method detection limit, method detection limits are used as stack concentrations to estimate emission rates and DEs <br /> MWTPH9 = 90 MW,nzene= 78 11 MWMTsE = 8815 <br /> Sample calculations <br /> lb/day=pounds per day NA=Destruction ratio not calculable due to Influent&effluent concentrations below laboratory detection limits <br /> N5=not sampled <br /> ppmv=parts per million by volume=ft3/1 x108 63 <br /> scfm=standard cubic feet per minute <br /> Emission rate=flow rate(ft3/min)'concentration(ft'!1 x106 It)"MW(Ibnb-mole)1384 5(ft3/115-mole)`1440 minfday <br /> Destruction Efficiency=[(Extraction rate-Emission rate)/Extraction rate]x 100% <br /> ft3=cubic feet <br /> APEX ENVIROTECH, INC <br /> Page 1 of 1 COH01 001 <br />