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i <br /> ' TABLE 5 <br /> OXYGENATED COMPOUNDS IN GROUNDWATER <br /> Knowles - Roek <br /> Stockton, California <br /> . Page 9 of 9 <br /> ' (in parts per btlhon) <br /> Wei pate Methanol Ethanal TBA Nf'�`BE DRE ETBE TAME 1,2 DCA EDB <br /> ' MW16A Jan-03 I <1000 2,500 <100 <100 <100 <100 <100 <br /> Feb-03 -- -- <400 2.900 <40 <40 <40 <40 <40 <br /> MW16B Jan-03 -- -- <200 170 <20 <20 <20 <20 <20 <br /> ' Feb-03 -- <400 260 <40 <40 <40 <40 <40 <br /> NOTES <br /> ' Analyzed using modified EPA method 8260 <br /> Bold values indicate value at or above method detection limit <br /> DIPE — Di-isopropyl ether <br /> ' ETBE _ Ethyl tert-butyl ether <br /> MTBE Methyl tert-butyl ether <br /> TAME = tert-amyl methyl ether <br /> ' TBA _ tert-butanol(tertiary butyl alcohol) <br /> 1,2 DCA 1,2 Dichloroethane <br /> EDB = Ethylenedibrormde <br /> ' < _ Less than the,nd,cated detection limit <br /> * Resampled 12/16/97 <br /> ** = Amended result (Argon Laboratory corresp 1217/00) <br /> 1 <br /> 1 <br /> 1 <br /> I <br /> 1 i <br />