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• WELL CONIINTRATIONS <br /> Shell-branded Service Station <br /> 4315 Waterloo Road <br /> Stockton, CA <br /> MTBE MTBE Depth to Depth to GW SPH DO <br /> WelIID Date TPPH TEPH B T E X 8020 8260 TOC Water SPH Elevation Thickness Reading <br /> u IL (ug/L u IL u u 1L u IL (u/L (ug/L MSI_ ft ft MSL ft m <br /> Abbreviations <br /> TPPH=Total petroleum hydrocarbons as gasoline by EPA Method 8260B, prior to July 23,2001, 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 8260B, prior to July 23, 2001,analyzed by EPA Method 8020 <br /> MTBE= Methyl-tertiary-butyl ether <br /> TQC=Top of Casing Elevation <br /> SPH=Separate-Phase Hydrocarbons <br /> GW=Groundwater <br /> DO=Dissolved Oxygen <br /> ug1L=Parts per billion <br /> ppm=Parts per million <br /> MSL=Mean sea level <br /> ft=Feet <br /> <n=Below detection limit <br /> NA=Not applicable <br /> Notes <br /> Site surveyed December 20,2001,by Virgil Chavez Land Surveying of Vallejo, California <br /> Page 3 <br />