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i i s Table 2 - S»mmaryoES Operation . Unocal Service Station No 6981 4707 Pacific Avenue i Stockton, California Destruction Hour Wellhead Influent Effluent Effic Date Meter Flow hate TPHg MTPHg Cumulative Benzene MBenzene Cumulative Flow Rate TPHg MTPHg Benzene MBenzene TPHg Reading (scfm) (ppmv) (lbs/day) MTPHg (ppmv) (lbs/day) MBenzene (scftn) (ppmv) (lbs/day) (ppmv) (lbs/day) M 12-05-98' 10218 ---- 219 ---- ---- <0 3 ---- ---- ---- <3 <0 03 --- 98 80 12-21-97 10218 System restarted 12-29-97 10442 125 6 224 9 12,173 <14 <0 053 169 3607 <3 <0 3 <0 03 <0 003 98 82 01-26-98 11031 1478 343 16 12,479 <14 <0 062 171 193 9 <3 <02 <0 03 <0 002 99 23 02-27-98 11801 137 6 501 22 13,088 <0 7 <0 029 172 2003 <3 <0 2 <0 03 <0 002 99 47 03-25-98 12422 1298 119 5 13 434 <0 3 <0 011 173 1950 4 02 <0 03 <0 002 96 67 04-20-98 13045 142 7 224 10 13,629 <0 1 <0 006 173 1685 12 06 <0 03 <0 001 94 82 05-27-98 13846 1469 127 6 13,897 <0 1 <0 006 173 1914 17 10 <0 03 <0 002 86 67 06-30-98 14467 145 5 45 2 14,000 <0 03 <0 001 173 193 0 12 07 <0 03 <0 002 73 53 07-30-98 14796 174 3 190 10 14,086 <0 29 <0 015 173 183 6 13 07 <0 03 <0 002 93 33 08-27-98 15054 1379 71 3 14,159 <0 14 <0 006 173 183 3 12 07 <0 03 <0 002 82 59 09-30-98 15571 148 3 58 3 14,222 <0 40 <0 017 174 1850 29 17 <0 72 <0 039 5000 10-22-98 15931 1 1392 103 5 14,277 <0 29 <0 012 174 3364 <3 <0 3 <0 03 <0 003 9744 11-03-98 System shut down due to low influent concentrations 11-18-98 16222 1 80 2 200 5 14,335 0 18 0 004 174 175 8 26 1 5 <0 03 <0 001 86 84 11-20-98 16268 1616 53 3 14,342 <0 03 <0 001 174 1689 6 0 3 <0 03 <0 001 8900 11-20-98 System shut down due to low influent concentrations 12-31-98 16269 I 1525 200 10 14,343 6 32 0 281 174 164 0 3 02 <0 01 <0 001 9842 01-04-99 16377 171 8 24 1 14,367 0 40 0 020 175 1836 7 04 <0 02 <0 001 7143 01-04-99 System shut down due to low influent concentrations 01-27-99 16378 1 917 132 4 14,368 3 74 0 100 175 182 6 5 03 <0 01 <0 001 96 20 02-01-99 16504 1506 74 4 14,387 0 14 0 006 175 168 9 12 07 <0 03 <0 001 83 21 02-01-99 System shut down due to low influent concentrations 02-24-99 16504 1 1109 134 5 14,387 690 0 223 175 179 1 5 03 <0 01 <0 001 96 47 03-01-99 16633 150 6 29 1 14,403 0 23 0 010 175 168 9 14 07 <0 02 <0 001 51 82 03-01-99 System shut down due to low influent concentrations 03-22-99 16634 35 3 243 3 14,403 3 16 0 032 175 4710 ---2 ----2 ----2 ----2 z 03-26-99 16724 82 9 7 0 14,409 0 03 0 001 176 4284 --3 --3 _--3 ----3 3 03-26-99 System shut down due to low influent concentrations 04-20-99 16725 1 107 9 422 14 14,409 8 33 0 262 176 167 1 25 13 <0 05 <0 002 9406 04-23-99 16788 69 6 37 1 14,429 007 0 001 176 1575 11 05 0 020 00009 7143 04-23-99 jSystem shut down due to low influent concentrations For Explanation refer to page 4 Stockton to 6981 140124 04