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WELL CONCENTRATIONS <br /> Shell-branded Service Station <br /> 1071 North Main Street <br /> Manteca, CA <br /> MTBE MTBE Depth to GW D O <br /> Well ID Date TPPH B T 1E X 8020 8260 TOC Water Elevation Reading <br /> (u2/L) u IL1__,uq/L) jun/L) u IL (u/L (u/L) 0MSL m <br /> Abbreviations - <br /> TPPH=Total petroleum hydrocarbons as gasoline by EPA Method 8260B: prior to July 11, 2001, analyzed by EPA Method 8015,except where noted <br /> BTEX=Benzene,toluene,ethylbenzene,xylenes by EPA Method 8260B, prior to July 11,2001, analyzed by EPA Method 8020,except where noted <br /> MTBE=Methyl-tertiary-butyl ether <br /> TOC=Top of Casing Elevation <br /> GW=Groundwater ' <br /> ug1L=Parts per,billion <br /> ppm= Parts per,milhon <br /> MSL= Mean sea level <br /> ft=Feet <br /> <n=Below detection limit <br /> } <br /> D=Duplicate sample <br /> Notes <br /> a=Sample re-analyzed past hold time, results should be considered estimates <br /> TPPH and BTEX analyzed by EPA Method,82608 on January 23, 2001 <br /> For the April 26,`2001,event, Sequoia's courser mistakenly took samples which were intended for Kiff Analytical <br /> Site surveyed May 7,2002, by Virgil Chavez Land Surveying of Vallejo,California - <br /> c <br /> P 4 � - <br />