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ARCO PRODUCTS COMPANY VES OPERATING REPORT,THIRD QUARTER, 1997,ARCO 2093 SUMMARY OF OPERATIONAL DATA Reporting period 6130/97-9/30/97 Current well source VES-2,VES-3,VES-4,VES-7,ATR-3,TEX-1 Current source(prior to dilution,in ppmv) Influent summary(PID data) TPH cone this period 1050(8/11/97) TPH cone last period 262(4/21/97) Initial TPH cone(8/17/95) 1200 Benzene cone this period -- Benzene cone last period -- Initial benzene conc(12/15/95) 57 Current process(atter dilution,to ppmv) Influent summary(PID data) TPH cone this period(PID) 180 ppmv(9/10/97) TPH cone last perLod(PID) 370 ppmv(6/18/97) Initial TPH cone (12/15/95)(laboratory) 1200 Effluent TPH cone end of this period(PID) 7 0 ppmv(9/10/97) Effluent TPH permit requirement VOC's not to exceed 2 0 lbs/day if under 95%DRE 5 6 lbs/day if above 95%DRE %TPH destruction 96% Effluent benzene permit requirement VOC's not to exceed 2 0 lbs/day if under 95%DRE 5 6 lbs/day if above 95%DRE %benzene destruction -- Average source flow(SCFM) 44 Average process flow(SCFM) 60 Average source vacuum(in H20) 35 Assumptions 1 The quantity of hydrocarbons removed was estimated using the influent TPH concentrations at the oxidizer inlet 2 Percent up time was calculated by dividing actual operating hours as determined from hour meter readings by the total hours of the reporting period 3 Source flow,process flow,and source vacuum are based on averages established during site visits --'=Not available or not applicable Example calculations * TPH recovered(in Ibs/day)=C x Q x 0 00038 * HC removed=Q x C x 0 00038 x(#hours/24) r LB HC/Utility=LB HC/(therms x 60 cents/therm+ kwh x 12 cents/kwh) Where C=Average influent TPH concentration(ppmv) Q=Influent flow rate(SCFM) 0 00038 is a constant and is derived as follows 1 0E-06ppmv x 60min/hr x 24 hr/day x 1 Ib-mol/380 cu-ft x 100 lbs/lb-mol