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TABLE 3
<br /> OXYGENATED COMPOUNDS IN GROUNDWATER
<br /> Knowles - Roek
<br /> Stockton, California
<br /> Page 8 of 9
<br /> (in parts per billion)
<br /> Well Date Methanol Ethanol 7TBA I MTBE DIPE ETBEJ TAME 1 1,2 DCAJ EDB
<br /> MW12 Feb-99 -- -- 18 12 27 <10 I <1 0 --
<br /> Cont'd 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 <5 0 <5 0 <5 0 <5 0 -- --
<br /> Feb-00 -- -- -- -- -- -- -- -- --
<br /> May-00 -- -- -- -- -- -- --
<br /> Aug-00 <500 <250 <50 <5 0 <5 0 <5 0 <5 0 35 <5 0
<br /> Nov-00 <500 <250 <50 <5 0 <5 0 <5 0 <5 0 21 <5 0
<br /> Mar-01 <500 <250 <20 13 <2 0 <2 0 <2 0 81 <2 0
<br /> May-01 -- -- <20 34 <2 0 <2 0 <2 0 98 <2 0
<br /> Aug-01 -- -- <20 48 <2 0 <2 0 <2 0 13 <2 0
<br /> Dec-01 Not Sampled
<br /> Feb-02 -- -- <20 200 <2 0 1 <2 0 <2 0 19 <2 0
<br /> May-02 Not Sampled
<br /> Aug-02 -- -- <20 110 1 <2 0 1 <2 0 <2 0 19 <2 0
<br /> Nov-02 Not Sampled
<br /> Feb-03 -- -- <20 78 <2 0 1 <2 0 <2 0 18 <2 0
<br /> Ma -03 Not Sampled
<br /> MW13 Nov-97 <50 <5 0 <5 0 <5 0 <5 0 �=
<br /> Feb-98 <500 <30 <30 <30 <30
<br /> May-98 -- -- <600 <60 <60 <60 <60 -- --
<br /> Aug-98 -- -- <250 <50 <50 <50 <50 -- --
<br /> Nov-98 -- <500 <100 <100 <100 <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 <20,000 <10,000 <2,000 <200 <200 <200 <200 <200 <200
<br /> Mar-01 <50,000 1 <25,000 <2,000 <200 <200 <200 <200 <200 1 <200
<br /> May-01 -- -- <2,000 <200 <200 <200 1 <200 <200 <200
<br /> Aug-01-
<br /> Not Sampled
<br /> Nov-02
<br /> Jan-03 Well Destroyed
<br /> MW13B Jan-03 -- -- <1,000 <100 <100 <100 <100 <100 <100
<br /> Feb-03 -- -- <2000 <200 <200 <200 <200 <200 <200
<br /> MR-03 -- -- <2,000 <200 <200 <200 <200 940 ' <200
<br /> MW14 Mar-01 <50,000 <25,000 <2,000 24,000 <200 <200 <200 <200 <200
<br /> May-01 -- -- <5,000 15,000 <500 <500 <500 <500 <500
<br /> Aug-01 -- -- <400 3,100 <40 <40 <40 <40 <40
<br /> Dec-Ol -- -- <500 34,000 <50 <50 <50 370 <50
<br /> Feb-02 -- -- <1,000 70,000 <100 <100 <100 <100 I <100
<br /> May-02 <10,000 81,000 <1,000 <1,000 <1,000 <1,000 <1,000
<br /> Aug-02 <10,000 140,000 <1,000 <1,000 <1,000 <1,000 <1,000
<br /> Nov-02 -- -- <10,000 210,000 <1,000 <1,000 <1,000 <1,000 <1,000
<br /> Feb-03 -- -- <2000 110,000 <200 <200 <200 <200 <200
<br /> May-03 -- -- <10,000 1 100,000 <1,000 I <1,000 I <1,000 <1,0007 <1,00o
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