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WELL CONONTRATIONS <br /> Former Shell Service Station <br /> 880 Victor Road <br /> Lodi, CA <br /> MTBE MTBE Depth to GW <br /> Wel! ID Date TPPH B T E X 8020 8260 DIPE ETBE TAME TBA Ethanol 1,2-DCA EDB TQC Water Elevation <br /> u IL u IL (ug/L u IL u 1L (ug/L (ug/L (u/L (u-/L (ug/L u1L u IL (ug/L (u2I) MSL ft MSL <br /> P-2 02/02/2004 <1,000 <10 <10 <10 <20 NA 310 <40 <40 1 <40 14,000 NA NA NA 54 51 5122 3 29 <br /> P-2 06/21/2004 NA NA NA NA NA NA 230 <40 <40 L <40 12,000 NA NA NA 54 51 53 05 146 ::] <br /> Abbreviations <br /> TPPH=Total petroleum hydrocarbons as gasoline by EPA Method 8260B, prior to November 20, 2000,analyzed by EPA Method 8015 <br /> BTEX=Benzene,toluene,ethylbenzene, xylenes by EPA Method 8260B,prior to November 20, 2000,analyzed by EPA Method 8020 <br /> MTBE=Methyl tertiary butyl ether <br /> DIPE=Di-isopropyl ether <br /> ETBE=Ethyl tertiary butyl ether <br /> TAME=Tertiary amyl methyl ether <br /> TBA=Tertiary butyl alcohol or Tertiary butanol <br /> 1,2-DCA= 1,2-Dichloroethane <br /> EDB= 1,2-Dibromoethane <br /> TOC=Top of Casing Elevation <br /> GW=Groundwater <br /> ug/L=Parts per billion <br /> MSL=Mean sea level <br /> ft =Feet <br /> <n=Below detection limit <br /> NA=Not applicable <br /> Notes <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 <br /> Site surveyed on January 4, 2002 by Virgil Chavez Land Surveying of Vallejo,CA <br /> Site surveyed on September 20,2002 by Virgil Chavez Land Surveying of Vallejo, CA <br /> Wells MW-8 through MW-11 surveyed August 15,2003 by Virgil Chavez Land Surveying of Vallejo,CA <br /> 5 z z 14 1 1 <br /> Page 6 <br />