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• TWE 8 <br /> EXTRACTION AND EMISSION RATES <br /> Former ARCO Station No 6100 <br /> 25775 South Patterson Pass <br /> Tracy,California <br /> Influent Propane Effluent System Influent Effluent concentration Extraction Rate froml, Emissions Rate to Destruction Cumulative Mass <br /> Date Flowrate Use Rate Flowrate (mglm3) (m m) Wells(lbs/da ) Atmos here(lbs/da Efficient % GRO <br /> (scfm)I (cfm) (acfm) GRO C6Hg MTBE GRO C6H, MTBE GRO C6H6 GRO C6H6 GRO C6H6 Period Total <br /> The combined cumulative mass removed using the previously operated two 200 cfm King,Buck&Associates SVE systems is= 9,62500 <br /> 05116!05 17932 0 006 3043 22,000 120 <100 <50 <0 50 <0 50 35036 191 <1 35 <0 01 >99 61% >99 29% 35036 9,97536 <br /> 06/14/05 250 19 0 006 375 2 3,100 62 <5 0 <50 <0 50 <0 50 68 88 138 <1 67 <0 02 >97 58% >98 79% 3,98804 13,963 40 <br /> 07/06/05 29256 0 006 4176 9,600 160 <10 <50 <0 50 <0 50 24943 416 <1 85 <0 02 >99 26% >99 55% 3,48485 17,448 25 <br /> 08/02/05 20051 0 006 3255 15,000 130 <10 <50 <0 50 <0 50 26711 231 <1 45 <0 01 >99 46% >99 38% 6,98085 24,429 10 <br /> 09/06/05 11679 0 006 241 8 24,000 440 <10 <50 <0 50 <0 50 24893 456 <1 07 <0 01 >99 57% >99 76% 9,05657 33,485 67 <br /> Notes <br /> GRO=Gasoline Range Organics <br /> 6116=Benzene <br /> flluent Flow rate—Influent flow rate+natural gas consumption rate+combustion air tlowrate <br /> Combustion air flow rate=125 cfm(assumed constant) <br /> i 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 Kamps Propane for May and June 2005 Usage rate was assumed to remain the same far July <br /> August and September 2005 <br /> Sample Calculations <br /> Ext Rate from = 71 5 cu ft x 27 000' x 0 028 cu meter x Ib <br /> Wells(lbs/day) min cu meter cu R 454000 mg <br /> I <br /> 350 36 lbs/daY <br /> est Removal = (3 50 36 1 35)x 100=>98 07% <br /> fficiency % 35036 <br /> ARCO-6 100 Quarterly_O&M_500cf7n Page I of 1 STRAW5 <br />