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r WELL CONCENTRATIONS <br /> Former Shell Service Station <br /> 880 Victor Road <br /> Lodi, CA <br /> MTBE 'I MTBE Depth to GW <br /> Well ID Date TPPH B T E X 8020 8260 DIPE ETBE TAME TBA Ethanol 1,2-DCA EDB TOC Water Elevation <br /> (ug/L (u 1L) (u IL ' u'/L) u IL (u IL u /L u IL} u IL u 1L a IL u IL) (MSL) ft (MSL) <br /> i I'I <br /> Abbreviations 1� <br /> I <br /> TPPH=Total petroleum hydrocarbons as gasoline by EPA Method 82606, prior to November 20,2000, analyzed by EPA Method 8015 <br /> STEX=Benzene, toluene, ethylbenzene, xylenes by EPA Method 82606, prior to November 20, 2000, analyzed by EPA Method 8020 <br /> MTBE= Methyl tertiary butyl ether <br /> DIPE= Di-isopropyl ether, analyzed by EPA Method 8260BE <br /> ETBE= Ethyl tertiary butyl ether, analyzed by EPA Method 8260B - <br /> TAME=Tertiary amyl methyl ether, analyzed by EPA Method 82608 <br /> 4 IE <br /> TBA=Tertiary butyl alcohol or Ternary butanol, analyzed by EPA Method 8260E <br /> 1,2-DCA= 1,2-Dichloroethane, analyzed by EPA Method 82608 <br /> EDB= 1,2-Dibromoethane, analyzed by EPA Method 82606 <br /> TOC=Top of Casing Elevation <br /> GW=Groundwater 7- <br /> uglL= Parts per billion <br /> MSL=Mean sea level ! r <br /> I lE <br /> ft =Feet <br /> <n =Below detection limit F - <br /> NA=Not applicable f _ <br /> Notes 1 �� <br /> a=This sample was analyzed outside of EPA recommended hold time <br /> Site surveyed on November 20, 1999 by Virgil Chavez Land Surveying of Vallejo, CA _ l <br /> Site surveyed on January 4, 2002 by Virgil Chavez land Surveying of Vallejo, CA 1! <br /> Site surveyed on September 20, 2002 by Virgil Chavez Land Surveying of Vallejo, GA _ <br /> Wells MW-8 through MW-11 surveyed August 15, 2003 by Virgil Chavez Land Surveying of Vallejo, CA - <br /> G <br /> I4 <br /> w - <br /> Page 7 <br /> i u <br />