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STable 2 - Summar&VES Operation • Unocal Service S aTion 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 12-05-981 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 <1 4 <0 053 169 3607 <3 <03 <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 9923 02-27-98 11801 137 6 501 22 13 088 <07 <0 029 172 2003 <3 <02 <0 03 <0 002 99 47 03 25-98 12422 1298 119 5 13 434 <0 3 <0011 173 1950 4 0 2 <0 03 <0 002 96 67 04-20-98 13045 1427 224 10 13,629 <0 i <0 006 173 168 5 12 0 6 <0 03 <0 001 9482 05-27-98 13846 1469 127 6 13 897 <0 1 <0 006 173 191 4 17 10 <0 03 <0 002 8667 06-30 98 14467 145 5 45 2 14,000 <0 03 <0 001 173 193 0 12 0 7 <0 03 <0 002 73 53 07-30-98 14796 174 3 190 10 14,086 <0 29 <0015 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 1483 58 3 14,222 <0 40 <0 017 174 1850 29 1 7 <0 72 <0 039 5000 Exnlanatlon. lbs/day = pounds per day MBenzene = mass of benzene MTPHg = mass of TPHg ppmv = parts per million by volume scfm = standard feet per minute System shut down on 10/26/97 due to the failure of the flame detector The flame detector was replaced on 12!5197,and the system operated approxunatley 3 hours influent and effluent samples were collected to confirm detector operation and destruction effectency then the system was shut down pending rectept of analytical data Dilution valve control motor replaced and system restarted on 12/21/97 d/unocal14855/to6981 As 140124 04