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Table 2. Soil Vapor Extraction and Treatment System Effluent Data <br /> ARCO Station 2093,Tracy, CA <br /> 1111-1 as Uasol ne Benzene <br /> Effluent Destruction Effluent Destruction <br /> 1're-Catalyst Post-Catalyst Manifold Flow Total System Flow Concentration Emission Rate Efficiency Concentration Emission Rate Efficiency <br /> Date Temp(°F) Temp(T) Rate(cfm) Rate(cfm) (ppmv) (lbs/da (percent) my <br /> y) (p ) (pp ) (lbs/day) (percent) <br /> 1/4/96 608 870 95 95 34 1.21 98% NM NM NM <br /> 1/26/96 655 856 95 95 47.3 1.68 95% NM NM NM <br /> 2126196 590 904 45 75 25 0.70 96% NM NM NM <br /> 3127196 547 910 45 75 25 0.70 96% NM NM NM <br /> 4/15/96 671 895 47 74 3.7 0.10 99% NM NM NM <br /> 512196 650 902 58 76 3.7 0.11 99% NM NM NM <br /> 5/15/96 648 905 43 60 13.2 0.30 98% NM NM NM <br /> 613196 650 902 36 63 1.2 0.03 100% NM NM NM <br /> 6121196 609 850 45 70 7.8 0.20 99% NM NM NM <br /> 7110/96 627 901 47 65 11.4 0.28 98% NM NM NM <br /> 8/12/96 650 878 62 68 81 2.06 92% NM NM NM <br /> 9/16196 696 832 72 80 14.5 0.43 98% NM NM NM <br /> 10/8196 659 832 36 60 4 0.09 99% NM NM NM <br /> 11/5/96 791 852 46 60 0 0.00 100% NM NM NM <br /> 12/20/96 732 778 49 63 1.8 0.04 97% NM NM NM <br /> TP}I=Total Petroleum Hydrocarbons <br /> On=Cubic feet per minute <br /> ppmv=Parts per million by volumnr <br /> NM=Not measured <br /> Sample Calculations: <br /> Mass emission rate calculation: <br /> lbs/day=("x"ppm)"(IE-6)*(molecular weight lb/lb-mol)*("y"cubic feet/min)* (24 hr/day)*(60 min/hr)*(lb-mol/380 cubic feet) <br /> where"x"is effluent concentration in ppm and"y"is the flow rate,cfm <br /> Destruction efficiency calculation: <br /> %=((Mass extraction rate lb/day-Mass emission rate Ib/day)I(Mass extraction rate lb/day))*100 <br /> (EAARCO SM%WorkcopvWI 961VE52093.3kLWt <br />