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Table 2 - Historical Summary of VES Chemical Analytical Data <br /> Unocal Service Station No 6981 <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"3) (ppmv) (mg/m"3) (ppmv) (mg/m"3) (mglm"3) (mglm"3) (mg/m"3) (ppmv) (mglm"3) (ppmv) (mg/m"3) (mg/m"3) (mg/m"3) <br /> 09-22-94 5,800 1,529 153 44 452 66 227 <11 <3 <0108 <0 03 0152 CO 109 0109 <br /> 09-29-94 — --- — — — <br /> 10-07-94 4,350 1,147 132 38 493 37 118 <11 <3 <0 108 <0 03 <0111 <0 109 <0 109 <br /> 10-20-94 -- --- — --- -- --- -- — -- — .. <br /> 11-08-94 5,220 1,376 164 47 238 26 118 <11 <3 <0108 <0 03 <0111 <0109 <0109 <br /> 11-22-94 -- — — — <br /> 12-11-94 4,100 1,081 57 16 320 58 220 74 20 0 060 002 12 1 1 64 <br /> 12-27-94 — — <br /> 01-09-95 6 100 1,609 99 28 640 120 560 160 42 083 024 15 5 7 29 <br /> 01-23-95 --- — --- — --- <br /> mglm"3=milligrams per cubic meter <br /> pmv=parts per million by volume <br /> TPHg=Total Petroleum Hydrocarbons as gasoline <br /> I <br /> 4855 02-3 <br />