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I <br /> 1 WELL CONCENTRATIONS <br /> Shell-branded Service Station <br /> 3725 South Tracy Boulevard <br /> j Tracy, CA <br /> # Wic #204-7884-0901 <br /> E ;; MTBE MTBE Depth to GW SPH DO <br /> Well ID Date TPPH TEPH B T E X 8020 8260 TOCWater Elevation Thickness Reading <br /> u IL u IL u IL u IL u IL u IL u IL u IL MSL tt MSL ft m <br /> Abbreviations <br /> TPPH=Total petroleum hydrocarbons as gasoline by EPA Method 82608„prior to January 23,2001, analyzed by EPA Method 8015' <br /> li ,i <br /> TEPH =Total petroleum hydrocarbons as diesel by modified EPA Method 8015 <br /> BTEX=Benzene,toluene, ethylbenzene,xylenes by EPA Method 82'608, prior to January 23, 2001,analyzed 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 E <br /> RW=Rediscovered well <br /> ug/L= Parts per billion <br /> E , <br /> ppm= Parts per million <br /> msl=Mean sea level I _ <br /> ft=Feet EI i <br /> <n=Below detection limit �> <br /> D=Duplicate sample �I ; <br /> NA=Not applicable I <br /> � _ I <br /> Notes I' <br /> Wells MW-1 through MW-3,were decommissioned in July 1990 during station reconstruction and replaced by MWA A through MW-3A in August 1990 <br /> „ <br /> , E , <br /> V <br /> f i I <br /> I <br /> I <br /> , <br /> P 6 <br />