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ARCO PRODUCTS COMPANY SOIL VAPOR EXTRACTION AND <br /> TREATMENT(SVETS)AND AIR SPARGING (AS) SYSTEMS OPERATING REPORT <br /> Second Quarter 1997 <br /> SUMMARY OF OPERATIONAL DATA <br /> End of period date 6/30/97 <br /> End of last period date 3/31/97 <br /> Current well source VW-I,VW-2,VW-3 <br /> Current Source(prior to dilution,in ppmv) Influent Summary(laboratory data) <br /> TPH cone this period NA <br /> TPH cone last period NA <br /> Benzene cone this period NA <br /> Benzene cont last period NA <br /> Current Process(after dilution,in ppmv) Influent Summary(PID data) <br /> TPH cone this period 12 2(4/21/97) <br /> TPH cone last period 8 2(1113/97) <br /> Benzene cone this period NA <br /> Benzene cone last period NA <br /> System Para meters/Em misions <br /> Effluent TPH emmtsions end of this period(lbs/day) NA <br /> Effluent TPH permit requirement 95%Destruction efficiency or less than 2 lbs/day total VOC <br /> 6 5 lbs/day of above 95%DRE <br /> %TPH destruction NA <br /> Effluent benzene emmtsions end of this period(lbs/day) NA <br /> Effluent benzene permit requirement 95%Destruction efficiency or less than 2 lbs/day total VOC <br /> 6 5 lbs/day if above 95%DRE <br /> %benzene destruction NA <br /> Average stack temperature NA <br /> Average source flow(SCFM) NA <br /> Average process flow(SCFM) NA <br /> Average source vacuum(m H2O) NA <br /> NA=Not available or not analyzed <br /> Assumptions <br /> I The quantity of hydrocarbons removed was estimated using the influent TPH concentrations <br /> at the oxidizer inlet <br /> 2 Percent up time was calculated by dividing actual operating hours as determined from hourmeter <br /> readings by the total hours of the reporting period <br /> 3 Source Flow,Process Flow,and Source Vacuum are based on averages established during site visits <br /> Example calculation <br /> ' TPH removed(lb/day)C x Q x 1 E-6 x 60 min/hr x 24 hr/day x 100 2 lb/lb-mol x lb-mol/380 11^3 <br /> ' HC Removed=ib/day x days/penod <br /> ` LB HC/Uuhty=LB HC/(therms x 60 cents/therm+ k-mh x 12 centslkwh) <br /> Where <br /> C=Average influent TPH concentration(ppmv) <br /> Q=influent flow rate(SUM) <br />