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OLE, 8 <br /> EXTRACTION AND EMISSION RATLS <br /> Former ARCO Station No 6100 <br /> 25775 South Patterson Pass <br /> Tracy,California <br /> Notes <br /> GRO=Gasoline Range Organics <br /> 6H6=Benzene <br /> Effluent Flow rate=influent flow rate+natural gas consumption rate+combustion air flowrate <br /> Combustion air flow rate=125 cfm(assumed constant) <br /> 'System influent includes dilution air and since it is measured on the positive side of the blower,flow is corrected only for temperature <br /> Propane usage rate is estimated based on the invoice summary provided by Kairips Propane for May and lune 2005 Usage rate was assumed to remam constant <br /> 'A system influent was not collected and hence the influent concentrations were used in estimating the mass extraction and emission rates <br /> Sam le Calculations <br /> Ext (tate from = 715 cu ft x 27,000 mg x 0 028 cu meter x Ib <br /> Wells(lbs/day) min ell meter cu ft 454000 mg <br /> = 35036 lbs. _/day <br /> Dest Removal — (350 36-135 x 100=>98 07% <br /> Efficiency,% 35036 <br /> Arco_6100_Quarterly 0&M-500cfm Page 2 of 2 5r1eArU5 <br />