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• WELL CONATRATIONS <br /> Shell-branded Service Station <br /> 4315 Waterloo <br /> Stockton, California <br /> MTBE MTBE Depth to Depth to GW SPH DO <br /> Well ID Date TPPH TEPH B T E X 8020 8260 TOC Water SPH Elevation Thrckness Reading <br /> (u /L u /! u IL u /L u IL (ug/L (ug/L} Itirill I I"_ql ft ft MSL ft <br /> m <br /> MW-1 10/27/1999 758 NA <0 500 <0 500 <0 500 <0 500 221 211 NA 59 37 NA NA NA <br /> MW-1 01/06/2000 <50 0 NA < NA <br /> 0 500 <0 500 <0 500 <0 500 168 172 NA 5811 NA NA NA NA <br /> MW-1 04/18/2000 _750-0 NA <0 500 <0 500 <0 500 <0 500 15 0 168 NA 4995 NA NA <br /> NA <br /> MW-1 07/27/2000 _<_500 NA <0 500 <0 500 <0 500 <0 500 45 2 441 NA 56 80 NA NA NA NA <br /> NA <br /> Abbreviations <br /> TPPH=Total petroleum hydrocarbons as gasoline by modified EPA Method 8015 <br /> TEPH =Total petroleum hydrocarbons as diesel by modified EPA Method 8015 <br /> BTEX=benzene,toluene,ethylbenzene,xylenes by EPA Method 8020 <br /> MTBE=methyl-tertiary-butyl ether <br /> TOC=Top of Casing Elevation <br /> SPH= Separate-Phase Hydrocarbons <br /> GW=Groundwater <br /> DO= Dissolved Oxygen <br /> ug/L=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 /> Page 1 <br />