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Table 2 - Summary of VES Operation <br /> Unocal Service Station No 6981 <br /> 4707 Pacific Avenue <br /> Stockton, California <br /> estruction <br /> Hour Wellhead Influent <br /> Effluent Effie <br /> Date Meter Flow Rate TPHg MTPHg Cumulative Benzene MBenzene Cumulative Flow Rate TPHg MTPHg Benzene MBenzene TPHg <br /> lbs/day) MBenzene (scfm) (ppmv) (lbs/day) (ppmv) (lbs/day) M <br /> Reading (scfm) (ppmv) (lbs/day) MTPHg (ppmv) <br /> 09-20-00 18307 152 1 63 3 05 14,752 <0 14 <0 006 183 2856 <0 5 <0 05 <0 003 <0 0002 >99 17 <br /> 09-2$_00 1$360 164 4 45 2 34 14,758 <0 03 <0 001 183 4567 <05 <0 1 <0 003 <0 0004 >98 82 <br /> 10-25-OQ 18360 126 7 78 3 12 14,758 <0 29 <0 011 183 2473 <26 <02 <0 03 <0 W2 >96 bl <br /> 10-30-00 18480 155 5 42 208 14,771 <0 14 <0 007 183 2469 <2 6 <02 <0 03 <0 002 >93 75 <br /> <0 07 <0 003 183 3165 65 07 <0 01 <0 00 1 91 60 <br /> 11/28/00a 05 1374 77 3 37 14,771 <br /> 183 244 4 <br /> 12-01-00 70 1368 45 1 94 14,779 <0 14 <0 006 <05 <0 1 <0 03 <0 003 >98 89 <br /> 12-15-00 72 1477 47 222 14,779 <0 14 <0 006 183 377 $ <br />� 183 246 3 <0 5 <0 04 <0 003 <0 0002 >99 00 <br /> 12-21-00 217 1567 53 262 14,794 <0 14 <0 007 <br /> 183 245 4 <2 6 <0 21 <0 014 <0 0010 000 <br /> 01-23-01 218 1252 <2 6 <0 10 14,794 <0 01 <0 001 <br /> 01-31-01 325 System down due to mechanical failure <26 <0 14 <0 029 <0 0014 000 <br /> 06-21-01 325 115 1 <26 <0 10 14,794 <0 03 <0 001 183 172 $ <br /> 83 184 0 <2 6 <0 15 <0 029 <0 0015 000 <br /> 07-02-01 329 1214 <26 <0 10 14,794 <0 03 <0 001 1 <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 /> I system shut down on 10/26/97 due to the failure of the flame detector The flame detector was replaced on 1215197, and the system operated approximatley 3 hours <br /> Influent and effluent samples were collected to confirm detector operation and destruction effeciency, then the system was shut down pending reciept of analytical data <br /> Dilution valve control motor replaced and system restarted on 12121197 <br /> 2 Sample of effluent inadvertently not collected on 3122199 II <br /> 3 Service station facilities were removed Power to VES originally came off the main breaker panel for the service station Station demolition required a new <br /> service drop from power company, which was not completed until August 2000 <br /> a New hour meter installed <br /> 124 04 y <br /> Stockton to 6981 • <br />