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" WELL CONL ,NTRATIONS • <br /> Shell-branded'Service Station <br /> 2494 Fremont Street <br /> Stockton, CA <br /> EWeIlID Date MTBE MTBE Depth to GW SPH <br /> TPPH B T E X 8020 8260 TOC Water Elevation Thickness <br /> u IL u li_ u /L u /L u /L u /L u IL MSI, ft MSI_ ft <br /> k Abbreviations <br /> TPPH=Total petroleum hydrocarbons as gasoline by EPA Method 82608, prior to May 14,2001, analyzed by EPA Method 8015, except where noted <br /> I BTEX=Benzene, toluene,ethylbenzene, xylenes by EPA Method 8260B, prior to May 14, 2001,analyzed by EPA Method 8020, except where noted <br /> MTBE=Methyl-tertiary-butyl ether <br /> TOC=Top of Casing Elevation <br /> SPH =Separate-Phase Hydrocarbons <br /> GW=Groundwater <br /> ug/L=Parts per billion <br /> MSL Mean sea level <br /> ft=Peet <br /> <n=Below detection limit <br /> NA=Not applicable <br /> Notes <br /> a=Pre-Development water level <br /> b=Post-Development water level <br /> c=This sample analyzed outside of EPA recommended holding time <br /> d=TPPH and BTEX analyzed by EPA Method 82608 <br /> Site surveyed January 8,2000, by Virgil Chavez Land Surveying of Vallejo, California <br /> Site surveyed January 14, 2002, by Virgil Chavez Land Surveying of Vallejo, California <br /> Wells S-1-85,S-3-84,and S-4-83 surveyed December 23,2002 <br /> Page 5 <br />