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T � <br /> Groundwater Analytical Res -Oxygenate Compounds <br /> Former Unocal Service Station#0123 <br /> 1034 Central Avenue <br /> Tracy,California <br /> WELL ID DATE METHANOL ETHANOL TBA MTBE DIPE ETBE TAME EDB 1,2-DCA <br /> (PPM) (Ppb) (Ppb) (ppb) (ppb) (ppb) (Ppb) (ppb) (Ppb) <br /> U-8 12/06/00 ND ND ND ND ND ND ND ND ND <br /> 03/21/01 ND ND ND ND ND ND ND ND ND <br /> EXPLANATIONS ANALYTICAL METHOD <br /> TBA=Tertiary butyl alcohol EPA Method 8015 Modified for Methanol <br /> MTBE =Methyl tertiary butyl ether EPA Method 8260 for Oxygenate Compounds <br /> DIPE=Di-isopropyl ether <br /> ETRE=Ethyl tertiary butyl ether <br /> TAME=Tertiary amyl methyl ether <br /> (ppb)=Parts per billion <br /> --=Not Analyzed <br /> ND = Not Detected <br /> ' Detection limit raised Refer to analytical reports <br /> 2 Oxygenate compounds were run past hold time due to laboratory error,except MTBE result,as indicated <br /> ' MTBE by EPA Method 8260 analyzed within hold time <br /> I <br /> 1 <br /> 0123 xlsl#280047 9 As of 03/21/01 <br />