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i <br /> I <br /> WELL CONCENTRATIONS <br /> Former Texaco Service Station <br /> (440 W. Charter Way <br /> I� Stockton, CA <br /> I <br /> MTBE MTBE Depth to GW SPH DO <br /> Well ID Date TPPH TEPH B X E X 8020 8260 TOC Water Elevation Thickness Reading <br /> u 1L u IL u IL OWL) u IL u IL u IL u /L MSL ft MSL ft m <br /> VEW-3S 02/20/2002 NA NA NA NA III INA I NA I NA NA 928 NA NA NA NA <br /> VEW4 05/16/2000 347 NA 866 290 <0 500 1 184 206 608 NA 1927 NA NA NA <br /> VEW4 1 08/30/2000 291 1 1,720 1 4 43a I 3 21 a III <0'500a I 0910a <2 50a 142 NA 20 48 NA NA NA <br /> 11 II <br /> VEW4002/20/2002 NA NA NA NA INA NA NA NA 942 NA NA NA NA <br /> VEW-4S 02/20/2002 NA NA NA NA f INA NA NA NA 941 NA NA NA NA <br /> Abbreviations <br /> TPPH=Total petroleum hydrocarbons as gasoline by EPA Method 82608, prior to May 17,2001,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 82608, prior to May 17,2001,analyzed by EPA Method 8020 <br />` MTBE=Methyl-tertiary-butyl ether r <br /> TOC=Top of Casing Elevation <br /> SPH=Separate-Phase Hydrocarbons <br /> GW=Groundwater <br /> i <br /> DO= Dissolved Oxygen <br /> ppm=Parts per million <br /> ug/L=Parts per billion <br /> MSL=Mean sea level <br /> ft=Feet <br /> <n=Below detection limit <br /> NA=Not applicable <br /> ' P 32 <br />