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WELL CONCENTRATIONS <br /> Smell-branded Service Station <br /> 2494 Fremont Street <br /> Stockton, CA <br /> Wic #204-7524-1806 <br /> MTBE MTBE Depth to GW SPH <br /> Well ID Date TPPH B T E X L8020 8260 TOC Water Elevation Thickness <br /> (ug/L u IL u /L ug/L)( (Ug/L (ug/L u /L MSL ft MSL ft <br /> Abbreviations <br /> TPPH=Total petroleum hydrocarbons as gasoline by EPA Method 8260B, prior to May 14,2001, analyzed by EPA Method 8015,except where noted <br /> STEX= Benzene,toluene,ethylbenzene,xylenes by EPA Method 82606, 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=Feet <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 82606 <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 /> Page 4 <br />