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MdM <br /> Page 6,Apache Mu,iic, ?rd Qnaricr <br /> o POUNDS OF VOCs RELEASED <br /> ' (SCFM) x (ppmv)/ 1,000,000 x (60 min/hr) x(100 mol/wt)/(379 CF/mol)= lbs/hr x 24 <br /> = lbs released/day x 365 = lbs released/yr <br /> ' (167 8) x (4 9)/ 1,000,000 x (60 min/hr) x(100 mol/wt)/(379 CF/mol)= 0 0138 lbs <br /> released/hr x 24=0 312 lbs VOC released/day x 365 = 113 9 lbs VOC released/yr <br /> ' o POUNDS OF VOCs DESTROYED <br /> ' (SCFM) x(ppmv)/ 1,000,000 x (60 min/hr) x(100 mol/wt)/(3 79 CF/mol) x (DE) = lbs <br /> VOC destroyed/hr x'24 = lbs VOC destroyed/day <br /> ' 38 x — <br /> ( } (1684}/ 1,004,000 x (60 mm/hr} x(i 00 mol/wt) /(379 CF/mol) x {0 987) - 10 lb <br /> VOC destroyed/hr x 24 =24 0 lbs VOC destroyed/day <br /> 6.0 CONCLUSIONS <br /> A destruction efficiency of the IC engine of 98 7% and the release of 0 312 and 113 8 pounds per <br /> day and pounds per year respectively of VOCs are well within the allowable limits of the ATC <br /> The calculated 24 pounds per day of VOCs destroyed represents an effective remediation <br /> ' program <br /> Several quarters of operation may be neeessaiv to observe a decline trend in the levels being <br /> extracted from the site soils and to predict at that time the length of time the system will need to <br /> operate With the re-installation of a smaller IC unit it is anticipated that the efficiencies may go up <br /> but the total pounds per day may go doNvn <br /> The laboratory analytical results yield significantly higher combustion efficiencies and lower <br /> exhaust discharges than would the corresponding PID readings Thus. ube of the PID <br /> measurements to calculate the requned parameters is not adequate without use of a conversion <br /> factor or recalibration of the PTD to more closely reflect the laboratory results <br /> r <br />� t <br /> 1 ' <br />