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TABLE 1 Page 11 of 12 <br /> GROUNDWATER DATA <br /> INDEPENDENT SHELL-BRANDED SERVICE STATION <br /> 4315 WATERLOO ROAD <br /> STOCKTON,CALIFORNIA <br /> Notes and Abbreviations: , <br /> TPHg=Total petroleum hydrocarbons as gasoline by EPA Method 8260B;prior.to July 23,2001,analyzed by EPA Method 8015: <br /> BTEX=Benzene,toluene,ethylbenzene,xylenes by EPA Method 8260B;prior to July 23,2001,analyzed by EPA Method 8020. <br /> MTBE=Methyl tertiary butyl ether <br /> DIPE=Di-isopropyl ether,analyzed by EPA Method 8260B <br /> ETBE=Ethyl tertiary butyl ether,analyzed by EPA Method'8260B <br /> TAME=Tertiary amyl methyl ether,analyzed by EPA Method 8260B <br /> TBA=Tertiary butyl alcohol or Tertiary butanol,analyzed by EPA Method 8260B <br /> 1,2 DCA=1,2-Dichloroethane,analyzed by EPA Method 8260B <br /> EDB=1,2-Dibromoethane,analyzed by EPA Method 8260B <br /> TOC=Top of casing elevation(Eley)in feet relative to mean sea level(MSL) <br /> SPH=Separate-Phase Hydrocarbons <br /> GW=Groundwater <br /> gg/L=Micrograms per liter(parts per billion) <br /> ft=Feet <br /> <n=Below detection limit <br /> -=Not applicable <br /> a=TOC elevation altered during wellhead maintenance. .' <br /> b=Hydrocarbon does not match pattern of laboratory's standard. <br /> c=Analyzed out of holding time. <br /> d=Quantity of unknown hydrocarbon(s)in sample based on gasoline. <br /> e=The concentration reported reflect(s)individual or discrete unidentified peaks not matching a typical fuel pattern. <br /> f=Estimated value.The concentration exceeded the calibration of analysis. <br /> g=Analyte was detected at a concentration below the reporting limit and above the laboratory method detection limit. Reported value is estimated. <br /> h=The result for this hydrocarbon is elevated due to the presence of single analyte peak(s)in the quantitation range. <br /> i=The concentration indicated for this analyte is an estimated value above the calibration range of the instrument. <br /> j=Analyzed by EPA Method 8015B(M). <br /> k=The sample chromatographic pattern for TPH does not match the chromatographic pattern of the specified standard. Quantitation of the unknown <br /> hydrocarbon(s)in the sample was based upon the specified standard. <br /> CRA241359(19) <br /> C� <br /> 1 <br />