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Table 1 - Summary of VES Chemical Analytical Data <br /> Unocal Service Station No 6981 <br /> 4707 Pacific Avenue <br /> Stockton, California <br /> I <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/rn) (ppmv) (mgle) (ppmv) (Mg/0) (mglm) (Mg/M3) (mglm) (ppmv) (mglm') (ppmv) (mglm') (mglm) (Mg/M3) <br /> 09-22-94 5,800 1,529 153 44 452 66 227 <11 <3 <0 108 <0 03 0152 <0 109 0109 <br /> 10-07-94 4,350 1,147 132 38 493 37 118 <11 <3 <0108 <003 <0111 <0109 <0109 <br /> 11-08-94 5,220 1,376 164 47 238 26 118 <11 <3 50108 <0 03 <0111 <0109 <0109 <br /> 12-11-94 4,100 1,081 57 16 320 58 220 74 20 0 060 002 12 1 1 6 4 <br /> 01-09-95 6,100 1,609 99 28 640 120 560 160 42 0 83 024 15 5 7 29 <br /> 01-22-95 System shut down for modification from thermal to catatytic mode <br /> 05-16-95 7,600 2,004 130 37 580 96 330 510 134 10 2 87 30 29 8 4 <br /> 05-23-95 System shut down due to destruction efficiency less than 95% <br /> 12-19-95 1,000 264 20 6 28 3 11 <10 <3 <0 050 <0 03 011 <0 050 00089 <br /> mg/m3=milligrams per cubic meter <br /> ppmv=parts per million by volume <br /> TPHg=Total Petroleum Hydrocarbons as gasoline <br /> 4855 02-0 <br />