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Table 2 - Summary of VES Operation <br /> Unocal Service Station No 6981 <br /> 4707 Pacific Avenue <br /> Stockton, California <br /> Wellhead Influent Effluent Destruction Effic <br /> Date Flow Rate TPHg MTPHg Cumulative Benzene MBenzene Cumulative Flow Rate TPHg MTPHg Benzene MSenzene TPHg Benzene <br /> (scfm) (ppmv) (lbs/day) MTPHg (ppmv) (lbslday) MBenzene (scfm) (ppmv) (lbslday) (ppmv) (lbs/day) (%) (%) <br /> 09-22-94 629 1,529 30 0 44 0 8 0 2924 <3 <0 27 <0 03 <0 003 9981 >99 93 <br /> 10-07-94 1496 1,147 54 681 38 1 7 20 1621 <3 <0 15 <0 03 <o 001 9975 >99 92 <br /> 11-08-94 1281 5,376 56 2,238 47 18 68 1755 <3 <016 <0 03 <0 002 9979 >99 94 <br /> 12-11-94 1114 1,081 38 3,612 16 0 5 101 1386 20 086 002 0 001 98 20 9989 <br /> 01-09-95 1363 1 609 70 4,413 28 1 1 125 2S87 42 3 46 024 0 018 9738 9916 <br /> 01-22-95 System shut down for modification from thermal to catalytic mode <br /> 05-16-95 1137 2,004 72 5,417 37 1 2 141 1973 134 8 41 287 0165 9329 9231 <br /> 05-23-95 System shut down due to destruction efficiency less than 95% <br /> 12-19-95 841 264 7 5,746 6 01 147 3567 <3 <0 30 <0 03 <0 003 9900 >99 48 <br /> 01-24-96 79 8 1,503 38 6,328 16 04 154 3085 4 039 <0 03 <0 003 9974 >99 81 <br /> 02-26-96 2140 396 27 6,793 3 0 2 158 2973 15 14 <0 03 <0 003 9613 >98 96 <br /> 03-26-96 2210 475 33 7,345 3 0 2 161 1880 7 0 4 <0 03 <0 002 9856 >98 96 <br /> lbs/day=pounds per day <br /> MBenzene=mass of benzene <br /> MTPHg=mass of TPHg <br /> ppmv=parts per million by volume <br /> scfm=standard feet per minute <br /> 4855 02-7 <br />