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WELL. CONONTRATIONS <br /> Shell-branded Service Station <br /> 1267 Country Club <br /> Stockton, CA <br /> MTBE MTBI~ Depth to GW SPH <br /> Well ID Date TPPH TEPH B T E X 8020 8260 TOC Water Elevation Thickness <br /> (ug/L (ug/L (ug/L (ug/L u IL (ug/L (ug/L (ug/L MSL ft. MSL ft. <br /> Abbreviations: <br /> TPPH=Total petroleum hydrocarbons as gasoline by EPA Method 82606; prior to January 29, 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 January 29, 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 /> ug/L= Parts per billion <br /> MSL=Mean sea level <br /> ft=Feet <br /> .cn= Below detection limit <br /> (D)= Duplicate sample <br /> NA=Not applicable <br /> ND=Not detected at or above the minimum quantitation limits. <br /> Notes: <br /> MTBE by EPA method 8260 was run out of recommended hold time;value should be considered an estimate. <br /> a=This sample was analyzed outside of EPA recommended hold time. <br /> b=TEPH with Silica Gel cleanup <br /> c= Hydrocarbon reported does not match the pattern of the laboratory's standard. <br /> Site surveyed January 7, 2002, by Virgil Chavez Land Surveying of Vallejo, Califomia. <br /> Page 7 <br />