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Table 1 - Summary of VOhemical Analytical Data <br /> Unocal Service Station No 6981 <br /> 4707 Pacific Avenue <br /> i <br /> Stockton, California <br /> I <br /> Wellhead Influent Sample Results Effluent Sample Results <br /> Date TPHg TPHg Benzene Benzene Toluene Ethylbenzene Xylenes MtBE7 TPHg TPHg Benzene Benzene Toluene Ethylbenzene Xylenes <br /> (mg/m}) (PPmv) (mg/m3) (ppmv) (mg/m3) (mg/m3) (mg/m3) (mg/m3) (mg/m3) (ppmv) (mg/m3) (ppmv) (mg/m3} (mglm3) (mg/m3) <br /> ExnIan� a _tion. <br /> mg/m3 = milligrams per cubic meter <br /> ppmv = parts per million by volume <br /> TPHg = Total Petroleum Hydrocarbons as gasoline <br /> MtBE = methyl tert-butyl ether <br /> NA = not analyzed for this constituent <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 approxtmatley 3 hours Influent and effluent samples were collected to confirm detector operation <br /> and destruction effectency, then the system was shut down pending rectept of analytical data Dilution valve control <br /> motor replaced and system restarted on 12/21/97 <br /> 2 Sample of effluent inadvertently not collected on 3/22/99 <br /> 5 Sample also analyzed for methyl tert-butyl ether(<1 00 mg/m3) <br /> 6 Sample also analyzed for methyl cert-butyl ether(<0 50 mg/m3) <br /> Stockton,to 6981 140124 04 <br />