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f <br /> ' TABLE 3 <br /> OXYGENATED COMPOUNDS IN GROUNDWATER <br /> Knowles Property <br /> Stockton, California <br /> Page 4 of 4 <br /> (in parts per billion) <br /> Sample Date OIPE ETRE MTBE TAME TBA <br /> 1 -- -- -- -- <br /> 07/97 <5 0' <br /> MW12 11197 70 <1 0 <5 0 <1 0 42 <br /> 02198 <50 <50 <50 <50 110 <br /> j 05198 19 <11 0 <50 <1 0 49 <br /> 08/98 34 <1 0 <1 0 <1 0 58 <br /> ' 11198 33 <1 0 <1 0 <1 0 45 <br /> 02199 27 <1 0 1 2 <1 0 18 <br /> 05199 <50 <50 <5 0 <5 0 <50 <br /> ' 07197 -- -- <2001 -- -- <br /> MW13 11197 <50 <5 0 <50 <5 0 <50 <br /> 02198 <30 <30 <30 <30 <500 <br /> 05198 <60 <60 <60 <60 <600 <br /> 08198 <50 <50 <50 <50 <250 <br /> 11198 <100 <100 <100 <100 <500 <br /> L 102/99 <100 <100 <100 <100 <5,000 <br /> ' 05199 1 <50 1 <50 1 <50 <50 <500 <br /> NOTES <br /> ' Analyzed using modified EPA method 8260 <br /> Bold values indicate value at or above method detection limit <br /> DIPE — Dusopropyl ether <br /> ETRE = Ethyl tort-butyl ether <br /> ' MTBE = Methyl tert-butyl ether <br /> TAME = tert-amyl methyl ether <br /> TBA — tart-butanol (tertiary butyl alcohol) <br /> ' < Less than the indicated detection lima <br /> • Resampled 12/16/97 <br /> 1 = Analyzed by EPA method 8020 <br /> -- = Not analyzed <br /> rax%ymr%wVvxy lab <br /> 1 � <br />