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• • • <br /> Table 2 - Summary of VES Operation <br /> Unocal Service Station No 6981 <br /> 4707 Pacific Avenue <br /> Stockton, California <br /> Hour Wellhead Influent Effluent Destruction Effic <br /> Date Meter Flow Rate TPHg MTPHg Cumulative Benzene MBenzene Cumulative Flow Rate TPHg MTPHg Benzene MBenzene TPHg Benzene <br /> Reading (scfm) (ppmv) (lbslday) MTPHg (ppmv) (lbs/day) MBenzene (scfm) (ppmv) (lbs/day) (ppmv) (lbs/day) (96} (96) <br /> 09-22-94 1450 629 1,529 30 0 44 08 0 2924 <3 <0 3 <0 03 <0 003 >99 81 >99 93 <br /> 10-07-94 1835 1496 1,147 54 681 38 17 20 1621 <3 <0 1 <0 03 <0 001 >99 75 >99 92 <br /> 11-08-94 2512 1281 1,376 56 2,238 47 18 68 1755 <3 <0 2 <0 03 <0 002 >99 79 >99 93 <br /> 12-11-94 3213 1114 1,081 38 3,612 16 05 101 1386 20 09 002 0 001 9820 9989 <br /> 01-09-95 3894 1363 1,609 70 4,413 28 1 1 125 2587 42 35 024 0 016 9738 9916 <br /> 01-22-95 System shut down for modification from thermal to catalytic mode <br /> 05-16-95 4234 1 1137 2,004 72 5,417 37 12 141 1973 134 841 287 0165 9329 9231 <br /> 05-23-95 System shut down due to destruction efficiency less than 95% <br /> 12-19-95 4433 841 264 7 5,746 6 01 147 3567 <3 <0 3 <o 01 <0 001 >99 00 >99 75 <br /> 01-24-96 5054 798 1,503 38 6,328 16 04 154 308 5 4 04 <0 03 <0 003 9974 >99 82 <br /> 02-26-96 5397 2140 396 27 6,793 <3 <0 2 158 2973 15 14 <0 03 <0 002 9613 >99 00 <br /> 03-26-96 5838 2210 475 33 7,345 <3 <0 2 161 1880 7 04 <0 03 <0 002 9856 >99 00 <br /> 0423-96 6127 2156 422 29 7,719 <0 03 <0 002 162 1778 <3 <01 <0 03 <0 001 >99 38 10000 <br /> 05-28-96 6715 1023 343 11 8,208 <0 6 <0 017 162 1809 <9 <0 5 <0 03 <0 002 9746 >95 00 <br /> 06-25-96 6972 862 844 23 8,392 <2 9 <0 072 163 2668 <4 <0 4 <0 03 <0 002 9950 >99 00 <br /> 07-30-96 7130 151 1 2,030 97 8,788 <2 9 <0 126 164 1920 16 10 <0 04 <0 002 9919 >98 60 <br /> 08-30-96 7488 1457 1,793 83 10,131 <2 9 <0122 165 3493 369 409 <0 3 <0 03 7941 9000 <br /> 09-25-96 7757 705 1,398 31 10,771 <29 <0 059 166 1640 <4 <0 2 <0 03 <0 001 9972 >99 00 <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 /> 4655 06-1 <br />