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TABLE 3 OXYGENATED COMPOUNDS IN GROUNDWATER Knowles-Roek Stockton,California Page 4 of 12 (in parte per billion) vrr a U71iC 1vielaanal i tnanat': l KY1 .; Mllik I11NT : EIB TAME 'L21)CA ED$. MW2 Nov-97 160 <20 <20 <20 <20 -- -- 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 <2,500 <1,250 <250 Q5 <25 <25 <25 260 <25 Aug-00 <500 <250 <50 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 Nov-00 <500 <250 <50 <5.0 <5.0 <5.0 <5.0 15 <5.0 Mar-01 <1,000 <500 <40 <4.0 <4.0 <4.0 <4.0 56 14 May-Ol -- -- <20 <2,0 <2.0 <2.0 <2,0 41 12 Aug 01 <20 <2.0 Q.0 <2.0 <2,0 6.5 <2.0 Dec-01 Not Sampled Feb-02 - <20 <2.0 -2-2 <2.0 <2.0 35 <2.0 May-02 Not Sampled Aug-02 -- <20 <2.0 <2.01 <2.0 <2.0 29 <2.0 Nov-02 Not Sampled Feb-03 66 <2.0 1 <2.0 <2.0 <2.0 18 <2.0 May-03 Not Sampled Aug-03 -- -- <20 <2.0 1 <2.0 <2.0 <2.0 26 <2.0- Nov-03 Not Sampled Feb-04 <20 <2.0 <2.0 <2.0 <2.0 I7 <2.0 May-04 Not Sampled Aug-04 - <200 <20 <20 <20 1 <20 38 <20 Nov-04 Not Sampled Feb-05 <200 26 <20 <20 1 <20--T-720 <20 May-05- Not Sampled . Dec-OS 141 - W3 Nov 97 <35 <5.0 <1.0 <1.0 X1.0 Feb-98 -- -- <100 <5,0 <5.0 <5.0 <5.0 May-98 -- 21 19 1.1 <1.0 <1.0 Aug-98 26 27 <1.0 <1.0 <1 D Nov-98 - <50 220 <16 <10 <10 Feb-99 -- <330 1,600 <65 <65 <65 May-99 <250 1,400 <25.0 <25.0 <25.0 - Aug-99 <200 1,400 <20 <20 <20 Nov-99 <250 1,500 <25 <25 <25 Feb-00 -- -- <250 4,000 <25 <25 <25 May-00 <5,000 <2,500 <500 3,800 <50 <50 <50 <50 <50 Aug-00 <5,000 <2,500 <500 1,200 <50 <50 <50 <50 <50 Nov-00 <2,500 <1,250 <250 2,600 <25 <25 <25 <25 <25 Mar-01 <25,000 <12,500 <1,000 1,200 <100 <100 <100 <100 <100 May-01 - <200 3,800 <20 <26 <20 <20 <20 Aug-Ol - <250 2,000 <25 <25 <25 <25 <25 Dec-01 <500 17,000 <50 <50 <50 <50 <50 Feb-02 <1,000 15,000 <100 <100 <100 <100 <100 May-02 <2,000 34,000 <200 <200 <200 <200 <200 Aug-02 - <1,000 24,000 <100 <100 <100 <100 <100 Nov-02 <4,000 5.300 <400 <400 <400 <400 <400