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0 • <br /> Table 2 Soil Vapor Extraction and Treatment System Effluent Data <br /> ARCO Facility 2133, Stockton, California <br /> i <br /> TPH as Gasoline Benzene <br /> Effluent Emission Destruction Effluent Emission Destruction <br /> Pre-Catalyst Post-Catalyst Total System Concentration Rate Efficiency Concentration Rate Efficiency <br /> Date Sampled Temp(°F) Temp(°F) Flow Rate(c£m) (ppmv) (lbs/day) (percent) (ppmv) (lbs/day) (percent) <br /> 1/11/95 748 780 100 11 042 98% 0 078 0 002 96% <br /> 2/9/95 701 782 80 120 3 65 75% 027 0 006 95% <br /> 3/28/95 753 771 80 0 71 002 99% ND 000002 100% <br /> 4/4/95 758 754 80 2 1 006 99% ND 000002 100% <br /> 5/3/95 653 726 100 56 2 13 88% 032 0 009 97% <br /> 5/15/95 644 712 100 8 3 032 97% 0 051 0 002 99% <br /> 6/12195 745 775 100 1 4 005 99% ND 000003 100% <br /> 7/8/95 744 777 100 1 9 007 99% ND 000047 100% <br /> 8/22/95 740 943 100 17 065 98% 044 0 013 99% <br /> 9/19/95 752 838 100 5 7 022 99% ND 000047 100% <br /> 10/23/95 754 768 100 ND 0 05 100% ND 000047 100% <br /> 11/15/95 756 752 100 ND 005 100% ND 000047 100% <br /> 12/15/95 744 697 100 0 000 100% NA NA NA <br /> 1126/96 745 728 100 9 6 036 92% NA NA NA <br /> 2/14/96 750 802 100 1 004 99% NA NA NA <br /> 3127/96 758 651 100 5 9 022 41% NA NA NA <br /> 10/8/96 742 643 100 0 61 0 02 98%1 NAI NAI NA <br /> TPH =Total Petroleum Hydrocarbons <br /> cfm=Cubic feet per minute <br /> ppmv=Parts per million by volumne <br /> NA=Not available or not applicable <br /> ND=Not detected <br /> Emission rates for values reported as ND are calculated using the detection limit <br /> Sample calculations <br /> Emission rate calculation <br /> lbs/day=("x"ppm/1,000,000)* ("Q" ft^3/mm)*("M W " lb/lb-mol)*(60 mirilhr)*(24 hr/day)*(lb-mol/379 5 ft^3) <br /> where "x" is effluent concentration in ppmv <br /> "Q" is the system flow rate in ft^3/mm <br /> "M W " is the molecular weight in lb/lb-mol (100 2 for TPH-G,78 1 for benzene) <br /> Destruction efficiency calculation <br /> %=((Removal rate, lb/day- Emission rate,lb/day)/(Removal rate, lb/day))*100 <br />