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• • i <br /> WELL CONCENTRATIONS <br /> Shell-branded Service Station <br /> 1071 North Main Street r <br /> Manteca, CA <br /> Wic#204-4728-0502 <br /> MTBE Depthto GW <br /> Well ID Date TPPH B T E X 8820 MTBE 6260 TOC Water Elevation <br /> u IL u u IL u IL u /L a IL u /L MSL ft MSL <br /> i <br /> Abbreviations <br /> TPPH=Total petroleum hydrocarbons as gasoline by modified EPA Method 8015 <br /> BTEX-benzene,toluene,ethylbenzene,xylenes by EPA Method 8020 <br /> MTBE a methyl4artiary-butyl ether <br /> TOC a Top of Casing Elevation <br /> GW s Groundwater <br /> ug/L=parts per billion <br /> msl a Mean sea level <br /> ft-Feet <br /> an a Below detection limit <br /> D o Duplicate sample <br /> Notes <br /> a a Sample re-analyzed past hold time,results should be considered estimates <br /> Page 2 <br />