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COMPUTATION SHEET <br /> OROJECTT[TLE ARCO Service Station No 6100 PROJECT NO U 6100-16-9 <br /> DESCRIPTION Mass Emission rates SHEE i 2 OF 4 <br /> PREP BY Kiran Nagaralu DATE 7/121705 CHK BY G Kowtha DATE <br /> DATA <br /> The following parameters listed below were recorded during the source testing on May 16, 2005 <br /> Influent air flow rate' (from field)(scfm) 14732 <br /> System Influent air flow rate' (field flow+dilution air)(acfm) 191 89 <br /> Dilution air flow rate (acfm)2 4457 <br /> Effluent air flow rate (acfm)3 31699 <br /> Influent temperature (°F) 77 <br /> System Influent temperature(°F) 105 <br /> Applied vacuum ('WC) 19040 <br /> Influent Concentration of GRO(mg/m3) 29,000 <br /> System influent Concentration of GRO(mg/m3) 22 000 <br /> Effluent Concentration of GRO(mg1m3) <50 <br /> Influent Concentration of benzene(mg/m3) 160 <br /> System Influent Concentration of benzene (mg/m3) 120 <br /> Effluent Concentration of benzene (mg/m3) <0 50 <br /> Influent Concentration of MTBE(mg1m3) <100 <br /> System Influent Concentration of MTBE (mg/m3) <100 <br /> Effluent Concentration of MTBE(mg/m3) <0 50 <br /> ield data sheets record flow rate (inches of water column, units)into the SVE system using a differential pressure guage and pitot <br /> tube These readings were converted to flow velocity(fpm, units) using Dwyer Chart The air flow velocity in a pipe is converted to air <br /> flow rate using the following formula <br /> Flow Rate (scfm)=Area of Pipe(ft2)'Velocity(fpm) <br /> Dilution air flow rate is estimated to be equal to the difference of system influent flow rate and influent air flow rate <br /> 3 Efluent flow rate is assumed to be equal to the sum of system influent flow rate, combustion air flow rate and propane consumption rate <br /> The combustion air flow rate per manufacturer is 125 cfm and the propane consumption rate based on our experience at similar sites <br /> is estimated to be approximately 0 1 cfm <br /> CALCULATION <br /> The system influent flow rate is measured on the positive side of the liquid ring blower and hence the air flow rate is corrected <br /> only for temperature <br /> Temperature Corrected influent flow rate = System Influent flow rate *{[460 R+68 deg F]/[deg F+460 R]] <br /> Influent Flow Rate after pressure and <br /> temperature corrections = 179 32 scfm <br /> Effluent air flow rate = System influent flow rate(corrected)+combustion air flow rate+propane consumption rate <br /> = 179 32+125+0 1 <br /> = 304 42 scfm <br /> ARCO 6100 Source Test Calcs a Summary_May 2005 <br />