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I <br /> TABLE 3 <br /> OXYGENATED COMPOUNDS IN GROUNDWATER <br /> Knowles - Roek <br /> Stockton, California <br /> Page 1 of 10 <br /> (fir parts per billion) <br /> Well Date Methanol Ethanol TBA MTBE RIPE ETRE TAME 1,2 ACA TEDB <br /> VW1 Feb-98 -- <100 <5 0 <5 0 <5 0 <5 0 -- -- <br /> Feb-00 -- -- 670 <50 <50 <50 <50 -- -- <br /> May-00 <50,000 <25,000 <5,000 <500 <500 <500 <500 <500 <500 <br /> Aug-00 <25,000 <12,500 <2,500 <250 <250 <250 <250 <250 490** <br /> Nov-00 <40,000 <20,000 <4,000 <400 <400 <400 <400 <400 1,200 <br /> Mar-01 <100,000 <50,000 <4,000 <400 <400 <400 <400 <400 590 <br /> May-01 -- -- <2,000 <200 <200 <200 <200 390 1,200 <br /> Aug-01 -- -- <2,000 <200 <200 <200 <200 630 $00 <br /> Dec-01 <br /> Not Sampled <br /> Feb-02 <br /> May-02 -- -- <10,000 <1,000 <1,000 <1,000 <1,000 <1,000 <1,000 <br /> Aug-02 -- -- <10,000 <1,000 <1,000 I <1,000 <1,000 I <1,000 <1,000 <br /> Nov-02 Not Sampled <br /> Feb-03 -- -- <2,000 <200 <200 <200 <200 <200 930 <br /> May-03 Not Sampled <br /> Aug-03 -- -- <2,000 <200 <200 <200 <200 360 72Q <br /> VW2 Aug-00 <10,000 <5,000 <1,000 <100 <100 <100 <100 <100 <100 <br /> . Nov-00 <4,000 <2,000 <400 <40 <40 <40 <40 <40 <40 <br /> Mar-01 <10,000 <5,000 <400 <40 <40 <40 <40 <40 <40 <br /> May-01 -- -- <200 <20 <20 <20 <20 <20 <20 <br /> Aug-01 Not Sampled <br /> Dec-01 -- -- <400 490 <40 <40 <40 <40 <40 <br /> Feb-02 -- -- <400 <40 <40 <40 <40 <40 <40 <br /> May-02 -- -- <400 <40 <40 <40 <40 <40 <40 <br /> Aug-02- <br /> Aug-03 Not Sampled <br /> VW3 Nov-97 -- -- <100 <20 <20 <20 <20 -- -- <br /> Feb-98 -- -- <100 <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 <500 <250 <50 <5 0 <5 0 <5 0 <5 0 <5 0 <5 0 <br /> Nov-00 1 <500 <250 <50 1 <5 0 <5 0 <5 0 <5 0 <5 0 <5 0 <br /> Mar-01 <2,500 <1,250 <100 <10 <10 <10 <10 <10 <10 <br /> May-01 -- -- <20 <2 0 <2 0 <2 0 <2 0 <2 0 <2 0 <br /> Aug-01 -- -- <40 <4 0 <4 0 <4 0 <4 0 <4 0 <4 0 <br /> Dec-0I Not Sampled <br /> Feb-02 -- -- <20 <2 0 <2 0 <20 <20 <2 0 <2 0 <br /> May-02 Not Sampled <br /> Aug-02 <br /> Nov-02 -- -- <20 <2 0 <2 0 <2 0 <20 <2 0 <2 0 <br /> Feb-03 -- -- <100 <10 <10 I <10 I <10-L- <10 <10 <br /> May-03 Not Sampled <br /> Aug-03 -- -- <200 <20 <20 1 <20 1 <20 <20 <20 <br />