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WELL CONNTRATIONS <br /> Shell-branded Service Station <br /> 4315 Waterloo Road <br /> Stockton, CA <br /> MTBE MTBE Depth to GW <br /> Well ID Date TPPH B T E X 8020 8260 DIPE ETBE TAME TBA 1,2-DCA EDB Ethanol TOC Water Elevation <br /> ug/L) ug/L) (ug/L) (ug/L) (ug/L ug/L (u/L (ug/L (ug/L (ug/L (ug/L) (ug/L) (ug/L} ug/L) (MSL ft MSL <br /> Abbreviations <br /> TPPH =Total petroleum hydrocarbons as gasoline by EPA Method 8260B, prior to July 23,2001,analyzed by EPA Method 8015 <br /> TEPH =Total petroleum hydrocarbons as diesel by modified EPA Method 8015 <br /> BTEX=Benzene,toluene,ethylbenzene,xylenes by EPA Method 82606, prior to July 23,2001,analyzed by EPA Method 8020 <br /> MTBE= Methyl tertiary butyl ether <br /> DIPE= Di-isopropyl ether, analyzed by EPA Method 8260B <br /> ETBE=Ethyl tertiary butyl ether, analyzed by EPA Method 82608 <br /> TAME =Tertiary amyl methyl ether, analyzed by EPA Method 82608 <br /> TBA=Tertiary butyl alcohol or Tertiary butanol, analyzed by EPA Method 8260B <br /> 1,2 DCA= 1,2-Dichloroethane, analyzed by EPA Method 8260E <br /> EDB= 1,2-Dibromoethane,analyzed by EPA Method 8260B <br /> TOC=Top of Casing Elevation <br /> SPH =Separate-Phase Hydrocarbons <br /> GW= Groundwater <br /> DO= Dissolved Oxygen <br /> ug/L= Parts per billion <br /> ppm=Parts per million <br /> MSL=Mean sea level <br /> ft =Feet <br /> <n=Below detection limit <br /> NA=Not applicable <br /> Page 5 <br />