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i <br /> • Table 1 - Summary of VEOemical Analytical Data <br /> Unocal Service Station No 6981 a <br /> 4707 Pacific Avenue <br /> Stockton, California <br /> Wellhead Influent Sample Results Effluent Sample Results <br /> Date TPH TPHg Benzene Benzene Toluene Ethylbenzene Xylenes MtBE TP/H TPHg Benzene Benzene Toluene Ethylbenzene Xylenes <br /> (mg/ni (ppmv) (mg1m3) (ppmv) (Mg/M3) (Mg/M3) (mg1m3) (mg/M3 <br /> ) (Mg <br /> m) (ppmv) (mgf m3) (ppmv) (Mg/M3) (Mg/M3) (mgl1") <br /> 09-20-00 240 63 <0 50 <0 14 <0 50 0 85 0 75 9 3 <20 <0 5 <0 010 <0 003 0 23 0 13 0 79 <br /> 09-28-00 170 45 <0 10 <0 03 <0 10 020 040 72 <20 <05 <0 010 <0 003 <0 010 <0 010 <0 010 <br /> Expinuntlon. <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 /> 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 12/21/97 <br /> 2 Sample of effluent inadvertently not collected on 3122199 <br /> S Sample also analyzed for methyl tert-butyl ether(<100 mglm3) <br /> 6 Sample also analyzed for methyl tent-butyl ether(<0 50 mglm3) <br /> 7 Service station facilities were removed Power to VES originally came off the main breaker panel for the service station Station demolition required a new service <br /> drop from power company, which was not completed until August 2000 <br /> Stockton,to 6981 140124 04 <br />