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TABLE 3 <br /> OXYGENATED COMPOUNDS IN GROUNDWATER <br /> Knowles - Roek <br /> . Stockton, California <br /> Page 5 of 7 <br /> (in parts per billion) <br /> Well Date Methanol Ethanol T13A MTBE DIPE ETBE TAME�1,2 DCA. EDB <br /> i <br /> MW7 Nov-97 — — <5 0 <5 0 <1 0 <1 0 <1 0 — — <br /> Feb-98 -- -- <100 <5 0 <5 0 <5 0 <5 0 — <br /> May-99 -- — <50 <5 0 <5 0 <5 0 <5 0 -- -- <br /> Aug-99 -- — <50 <5 0 <5 0 <5 0 <5 0 -- — <br /> NOV-99 -- — <50 12 <5 0 <5 0 <5 0 -- - <br /> Feb-00 — — <50 20 <5 0 <5 0 <5 0 -- -- <br /> May-00 <500 <250 <50 33 <5 0 <5 0 <5 0 <5 0 <5 0 <br /> Aug-00 <500 <250 <50 <5 0 <5 0 <5 0 <5 0 <5 0 <5 0 <br /> Nov-00 <500 450 <50 12 <5 0 <5 0 <5 0 <5 0 <5 0 <br /> Mar-01 <500 <250 <20 39 <2 0 <2 0 <2 0 <2 0 <2 0 <br /> May-01 — -- <20 70 <2 0 <2 0 <2 0 <2 0 4 0 <br /> Aug-0I — — <20 18 40 40 <20 <20 <20 <br /> Dec-01 Not Sampled <br /> Feb-02 — — <20 240 1 <2 0 1 <2 0 <2 0 <2 0 <2 0 <br /> May-02 Not Sampled <br /> Aug-02 I <20 280 1 4 0 4 0 <2 0 <2 0 <2 0 <br /> MW8 Nov-97 — -- <5 0 <5 0 42 <1 0 <1 0 — -- <br /> Feb-98 -- -- <100 <5 0 <5 0 <5 0 <5 0 — — <br /> Nov-99 -- -- <50 <5 0 <5 0 <5 0 <5 0 — -- <br /> Feb-00 -- — <50 <5 0 <5 0 <5 0 <5 0 — --- <br /> May-00 <500 <250 <50 <5 0 <5 0 <5 0 <5 0 <5 0 <5 0 <br /> Aug-00 <2500 <1250 <250 <25 <25 <25 <25 <25 <25 <br /> No-V-00 <1,000 <500 <100 <10 <10 <10 <10 <10 <10 <br /> Mar-01 <1,000 <500 <40 <4 0 <4 0 <4 0 <4 0 <4 0 <4 0 <br /> May-01 -- -- 40 4 0 <2 0 <2 0 <20 <2 0 <2 0 <br /> Aug-01 — — <20 <2 0 <2 0 <0 <2 0 <2 0 <2 0 <br /> Dec-01 -- — <20 <20 <20 <20 40 40 1 <20 <br /> Feb-02 — — <200 <20 <20 <20 1 <20 40 40 <br /> May-02 — -- <20 <2 0 <2 0 <2 D L 4 0 <2 0 <2 0 <br /> Aug-02 — — <20 <20 <20 <20 40 <20 <20 <br /> MW9 Nov-97 — — <5 0 93 14 <1 0 <1 0 — — <br /> Feb-98 — -- <100 22 <5 0 <5 0 <5 0 —Nov-99 -- — <50 I8 <5 0 <5 0 <5 0 -- -- <br /> Feb-00 — -- <50 22 <5 0 <5 0 <5 0 — — <br /> May-00 <500 <250 <50 27 <5 0 <5 0 <5 0 68 <5 0 <br /> Aug-00 <500 <250 <50 is <5 0 <5 0 <5 0 <5 0 <5 0 <br /> Nov-00 <500 <250 <50 13 <5 0 <5 0 <5 0 62 <5 0 <br /> Mar-01 <500 <250 <20 98 <2 0 <2 0 <2 0 31 <2 0 <br /> May-01 — -- 40 85 <2 0 <2 0 <2 0 4 0 4 0 <br /> Aug-01 — — <20 60 <2 0 4 0 <2 0 <2 0 <2 0 <br /> Dec-01 Not Sampled <br /> . Feb-02 -- — <20 87 1 <0 I <0 <G <0 <0 <br /> May-02 Not Sampled <br /> Au -02 -- -- <20 82 <0 I <0 <2 0 4 0 <10 <br />