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TABLE 3 OXYGENATED COMPOUNDS IN GROUNDWATER Knowles-Rock I Stockton, California Page 8 of 11 (in parts per billion) �WeI1 - Dale v et#i 01 Ethanol>t TBA e£F BE I3lPE EMETAME s' ,2 DCA r �B ' MW9 Feb-02 -- — � <20 S 7 <2 0 <2 0 <2 0 <2 0 <2 0 Cont'd May-02 Not Sampled Aug-02 -- <20 _82 <20 <2 0 <2 0 <2 0 <2 0 Nov-02 — Not Sampled Feb-03 <20 5 1 <20 <2 0 <2 0 <2 0 <2 0 May-03 Not Sampled Aug-03 -- -- <20 21 1 <2 Q <2 0 <2 0 41 <2 0 Nov-03 Not Sampled Feb-04 - -- <20 49 < 07_<20 <2 0 720 <2 011 May-04 Not Sampled I Aug-04 — <20 33 <20 <2 0 <2 0 35 <2 0 Nov-04 Not Sampled MW10 Nov-97 -- -- 15 1 <5 0 76 <1 0 <1 0 Feb-98 -- <100 <5 0 <5 0 <5 0 <5 0 Nov-99 <50 <5 0 <5 0 <5 0 <5 0 Feb-00 -- -- <50 <5 0 <5 0 <5 0 ( <5 0 -- May-00 <500 <250 <50 <5 0 <5 0 <5 0 <5 0 19 <5 0 Aug-00 <500 <250 <50 <5 0 <5 0 <5 0 <5 0 23 <5 0 I Nov-00 <500 <250 <50 <5 0 <5 0 <5 0 <5 0 29 <5 0 Mar-01 <500 <250 <20 42 <2 0 <2 0 <2 0 17 <2 0 May-01 <20 2 0 <2 0 1 <2 0 <2 0_1 7S I <2 0 Aug-01 Not Sampled Dec-0 I -- ( - <20 10 <20 <2 0 <2 0 1 15 <2 U Fen-02i -- -- Not Sampled Mav-02 <20 39 <2 0 <2 0 <2 0 16 <2 0 Aug-02 Not Sampled Nov-02 -- -- <20 42 1 < 0 <2 O <2 0 12 <2 0 Feb-03 Not Sampled May-03 -- <20 1-5 <2 0 <2 0 <2 0 12 <2 0 Aug-03 Not Sampled Nov-03 -- — <20 26 <2 0 <2 0 <2 0 10 <2 Q Feb-04 Not Sampled May-04 -- -- <20 <2 0 <2 0 <2 0 <2 0 13 <2 0 Aug-04 -- — Not Sampled <20 <20 <2 0 <2 0 <2 0 12 <2 0 MW 11 Nov-97 -- -- 12 <5 0 94 <1 0 <1 0 -- -- Feb-98 ±y - <100 <5 0 16 <5 0 <5 0 -- May-98 38 <5 0 11 <1 0 <1 0 Aug-98 - -- 44 <10 28 <10 <10 -- Nov-98w = 35 <10 26 <10 <10 = -- Feb-99 18 <10 22 <10 <10 May-99 -- — <50 <5 0 16 <5 0 <5 0 — Aug-99 -- -- <50 <5 0 <5 0 <5 0 <5 0 - — I Nov-99 .. <50 <5 0 <5 0 1 <5 0 <5 0 �= w Feb-00 tvlay-00 <500 <250 <50 <5 0 95 <5 0 <5 0 27 <5 0 ' Aug-00 <500 <250 <50 <5 0 <5 0 <5 0 <5 0 37 <50 Nov-00 <500 <250 <50 <5 0 <5 0 <5 0 <5 0 10 <50