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I <br /> ' TABLE 3 <br /> OXYGENATED COMPOUNDS IN GROUNDWATER <br /> ' Knowles-Roek <br /> Stockton,Caltfonua <br /> Page 6 of 6 <br /> I ' (in parls per billion) <br /> Well Hate Methanol Ethanol TBA MIRE DIPE ETRE TAME 1,2 DCA EDB <br /> MW 13 Nov-97 -- - <50 <5 0 <5 0 <5 0 <5 0 -- = <br /> Feb-98 - <500 <i0 <30 <30 <30 <br /> May-98 - <600 <60 <60 <60 <60 - <br /> ' Aug-98 _ = Q50 <50 <50 <50 <50 -- -- <br /> Nov-98 <500 <100 <100 <100 1 <100 <br /> Feb-99 — <5,000 <100 <100 <100 <100 - - <br /> May-99 -- =_ <50 <500 <50 <50 <50 _ -- <br /> Aug-99 <500 <50 <50 <50 <50 <br /> Aug-00 <10,000 <5,000 <1,000 <100 <100 <100 <100 <100 <100 <br /> Nov-00 Q0,000 1 <10 000 <2,000 <200 <200 <200 <200 <200 Q00 <br /> ' Mar-01 <50,000 <25,000 Q,000 <200 <200 Q00 <200 <200 <200 <br /> May-01 <2 000 <200 1 <200 <200 <200 <200 Q00 <br /> Aug-01 <br /> Dec-01 Not Sampled <br /> 1 <br /> Feb-02 <br /> MW14 Mar-01 <50,000 C15,004 01,000 24,000 Q00 <200 Q00 400 Q00 <br /> May-01 -- -- <5,000 15,000 <500 <500 <500 <500 <500 <br /> ' Aug-0I -- - <400 3,100 <40 <40 <40 <40 <40 <br /> Dec-01 <500 34,000 <50 <50 <50 370 <50 <br /> Feb-02 <1 000 70 000 <I00 <100 <100 <100 <100 <br /> ' NOTES <br /> Analyzed using modified EPA method 8260 <br /> ' Bold values indicate value at or above method detection limit <br /> DIPS Di-isopropyl ether <br /> ETBE Ethyl tert-butyl ether <br /> MTBE = Methyl tent-butyl ether <br /> ' TAME = tert-amyl methyl ether <br /> TBA = tert-butanol(tertiary butyl alcohol) <br /> 1,2 DCA = 1,2 Dichloroethane <br /> EDB = Ethylenedibromide <br /> ' < Less than the indicated detection limit <br /> * Resampled 12/16/97 <br /> ** = Amended result (Argon Laboratory corresp, 12/7/00) <br /> 1 <br /> I <br /> 1 � <br />