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r r <br /> Table 2 - Groundwater Chemical Analytical Data <br /> Former Unocal Service Station##0I23 <br /> 1034 Central Avenue <br /> Tracy,California <br /> ell/Sampl Sample Ethanol Methanol 1,2-DCA EDB TBA MtBE DIPE ETRE TAME Lead <br /> No Date (ppb) (ppm) (ppb) (ppb) (ppb) (ppb) (ppb) (ppb) (ppb) (ppb) <br /> U-7 I2/6/00 <500 <1 00 <2 0 <2 0 <50 <2 0 <2 0 <2 0 <2 0 <0 050 <br /> U-8 1216100 <500 <1 00 <2 0 <2 0 <50 <2 0 <2 0 <2 0 <2 0 <0 050 <br /> Explanation, Analytical Method <br /> 1,2-DCA=1,2-dichloroethane Oxygenates except methanol by EPA Method 8260B <br /> EDB=Ethyl dibromtde 1,2-DCA and EDB by EPA Method 8260B <br /> TBA=Tert-butyl alcohol Lead by EPA Method 6010A <br /> MtBE=Methyl tert-Butyl Ether Methanol by EPA Method 8015M <br /> D1PE=Di-isopropyl ether <br /> ETRE=Ethyl tent-butyl ether Analytical Laboratory <br /> TAME=Tert-amyl methyl ether Sequoia Analytical(ELAP#127 1) <br /> ppb=Parts per billion <br /> ppm=Parts per million <br /> 240073 05 <br />