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Table I - Summary ofemical Analytical Data • <br /> Unocal Service hon No 6981 r <br /> 4707 Pacific Avenue <br /> Stockton, California <br /> Wellhead Influent Sample Results Effluent Sample Results <br /> Date TPHg TPHg Benzene Benzene Toluene Ethylbenzene Xylenes TPHg TPHg Benzene Benzene Toluene Ethylbenzene Xylenes <br /> (mg/m) (ppmv) (mg/m3) (PPmv) (m9/m3) (m8/m3) (m8lm3) (mg/m3) (PPmv) (mg/m3) (PPmv) (mg/m3) (mg/m3) (mglm3) <br /> 12-05-98' 830 219 <10 <03 <10 5 53 <10 <3 <010 <003 <010 <010 <010 <br /> 12-21-97 System restarted <br /> 12-2997 850 224 <50 <1 4 <5 0 6 4 88 <10 <3 <0 10 <0 03 <0 10 <0 10 <0 10 <br /> 01-26-98 1,300 343 <50 <14 <50 77 110 <10 <3 <010 <003 <010 <010 <010 <br /> 02-27-98 1,900 501 <25 <07 3 8 18 95 <10 <3 <0 10 <0 03 <0 10 <0 10 <0 10 <br /> 03-25-98 450 119 <1 0 <0 3 <1 0 3 7 50 15 4 <0 10 <0 03 <0 10 <0 10 021 <br /> 04-20-98 850 224 <0 5 <0 1 <05 3 5 67 44 12 <0 10 <0 03 <0 10 <0 10 0 67 <br /> 05-27-98 480 127 <05 <0 1 <05 1 5 25 64 17 <0 10 <0 03 <0 10 <0 10 018 <br /> 06-30-98 170 45 <0 1 <0 03 <0 1 19 6 3 45 12 <0 10 <0 03 <0 10 <0 10 <0 10 <br /> 07-30-98 720 190 <10 <03 <10 44 14 48 13 <0 10 <0 03 <0 10 <0 10 <0 10 <br /> 08-27-98 270 71 <0 50 <0 1 <05 <05 3 7 47 12 <0 10 <0 03 <0 10 <0 10 <0 10 <br /> 09-30-98 220 58 1 4 0 4 7 5 2 0 11 110 29 2 5 0 7 10 1 2 5 8 <br /> Explanation. <br /> mg/m3 = milligrams per cubic meter <br /> ppmv = parts per million by volume <br /> TPHg = Total Petroleum Hydrocarbons as gasoline <br /> 'System shut down on 10/26/97 due to the failure of the flame detector The flame detector was replaced on 12/5/97,and <br /> the system operated approximatley 3 hours Influent and effluent samples were collected to confirm detector operation <br /> and destruction effectency,then the system was shut down pending reciept of analytical data Dilution valve control <br /> motor replaced and system restarted on 12/21/97 <br /> d/uncal/4855/to6981 xis 140124 04 <br />