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Table 2 - Summary of VES Operation Unocal Service Station No 6981 4707 Pacific Avenue Stockton,California Destruction Hour Wellhead Influent Effluent Effie Date Meter Flow Rate TPHg MTPHg Cumulative Benzene MBenzene Cumulative Flow Rate TPHg MTPHg Benzene MBenzene TPHg Reading (scfm) (ppmv) (lbs/day) MTPHg (ppmv) (lbs/day) MBenzene (scfm) (ppmv) (lbs/day) (ppmv) (lbs/day) M 12-05-98' 10218 ---- 219 ---- ---- <0 3 ---- ---- ---- <3 ---- <0 03 ---- 9880 12-21-97 10218 System restarted 11 12-29-97 10442 1256 224 9 12,173 <1 4 <0 053 169 3607 <3 <0 3 <0 03 <0 003 9882 01-26-98 11031 1478 343 16 12,479 <14 <0 062 171 1939 <3 <0 2 <0 03 <0 002 9923 02-27-98 11801 1376 501 22 13,088 <0 7 <0 029 172 2003 <3 <0 2 <0 03 <0 002 9947 03-25-98 12422 1298 119 5 13,434 <0 3 <0 011 173 1950 4 02 <0 03 <0 002 9667 04-20-98 13045 1427 224 10 13,629 <01 <0 006 173 1685 12 06 <0 03 <0 001 9482 05-27-98 13846 1469 127 6 13,897 <0 1 <0 006 173 1914 17 10 <0 03 <0 002 8667 06-30-98 14467 1455 45 2 14,000 <0 03 <0 001 173 1930 12 07 <0 03 <0 002 7353 07-30-98 14796 1743 190 10 14,086 <0 29 <0015 173 1836 13 07 <0 03 <0 002 9333 08-27-98 15054 1379 71 3 14,159 <0 14 <0 006 173 1833 12 07 <0 03 <0 002 8259 09-30-98 I5571 1483 58 3 14,222 <0 40 <0017 174 1850 29 1 7 <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 802 200 5 14,335 018 0 004 174 1758 26 15 <0 03 <0 001 8684 11-20-98 16268 1616 53 3 14,342 <0 03 <0 001 174 1689 6 03 <0 03 <0(Ql 8900 I 11-20-98 System shut down due to low influent concentrations 12-31-98 16269 1525 200 10 14,343 632 0 281 174 1640 3 02 <0 01 <0 001 9842 01-0499 16377 1718 24 1 14,367 040 0 020 175 1836 7 04 <0 02 <0001 7143 01-04-99 System shut down due to low influent concentrations 01-27-99 16378 917 132 4 14,368 374 0100 175 1826 5 03 <0 01 <0 001 9620 02-01-99 16504 1506 74 4 14,387 014 0 006 175 1689 12 07 <0 03 <0 001 8321 02-01-99 System shut down due to low influent concentrations 02-24-99 16504 1109 134 5 14,387 690 0 223 175 1791 5 03 <0 01 <0 001 9647 03-01-99 16633 I 1506 29 1 14,403 023 0 010 175 1689 14 07 <0 02 <0 001 5182 03-01-99 System shut down due to low influent concentrations ,I 03-22-99 16634 1 353 243 3 14,403 316 0 032 175 4710 ----2 --_2 z ---- ----2 03-26-99 16724 829 7 0 14,409 003 0 001 176 4284 3 ----I ----3 ___ ----3 03-26-99 System shut down due to low influent concentrations 04-20-99 16725 I 1079 422 14 14,409 833 0 262 176 1671 25 13 <0 05 <0 002 9406 04-23-99 16788 696 37 1 14,429 007 0 001 176 1575 1 l 05 0 020 00009 7143 04-23-99 S stem shut down due to low influent concentrations For Explanation refer to page 4 a 1 Stockton,to 6981 140124 04 b r