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r <br /> COMPUTATION SHEET <br /> PROJECT TITLE ARCO Service Station No 2168 PROJECT NO 20805-146 09 <br /> DESCRIPTION Mass Emission rates SHEET 2 OF 4 <br /> PREP BY G S Kowtha DATE 2/7/97 CHK BY DATE <br /> DATA <br /> 1/24/97 <br /> Influent concentration of TPHG (mg/m3) 55,000 <br /> Influent concentration of benzene (mg/m3) 980 <br /> Effluent concentration of TPHG (mg/m3) 180 <br /> Effluent concentration of benzene(mg/m3) <0 16 <br /> Soil vapor flow rate (scfm) 78 <br /> Dilution air flow rate (scfm) 0 <br /> Effluent air flow rate (scfm) 78 <br /> Influent temperature(oF) 90 <br /> Effluent temperature(oF) 350 <br /> Applied vacuum ("WC) 122 <br /> CALCULATION <br /> Total Influent flow rate(1/24/97 = 78 acfm " t(406 8 "WC - 12 2 "WC)/406 8"WC) <br /> (pressure correction) = 7566 <br /> Temperature Correction = 75 76 * (460 R + 90 F/460 R) <br /> Total Influent Flow Rate(1/24/97 = 9046 acfm <br /> Total effluent flow rate (1/24/97) = 78 acfm " {(460 R + 350 F)/460 R) <br /> = 137 35 acfm <br /> H 1ARC01Station\STEST XLS <br />