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TABLE 3 <br /> OXYGENATED COMPOUNDS IN GROUNDWATER <br /> Knowles-Roek <br /> Stockton,California <br /> Page 7 of 12 <br /> (in park per h111rort) <br /> WeI1 Date Methanol Ethanol TBA MTBE RIPE ETBE TAME 1,2 DCA EDB <br /> MWS Nov-97 - <5 0 <5 0 42 <1 0 <10 -- <br /> Feb-98 - <100 <50 <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 X25 25 <br /> Nov-00 <1000 <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 -- -- <20 <2 0 <2 0 2 0 <2 0 <2 0 <2 0 <br /> Aug-01 - <20 <2 0 <2 0 2 0 <2 0 2 0 2 0 <br /> Dec-01 <20 2 0 2 0 2 0 2 0 2 0 <2 0 <br /> Feb-02 <200 20 20 20 <20 <20 <20 <br /> May-02 - <20 <2 0 <2 0 <2 0 2 0 <2 0 <2 0 <br /> Aug-02 20 <2 0 2 0 <2 0 <2 0 2 0 <2 0 <br /> Nov-02 <20 <2 0 2 0 2 0 <2 0 <2 0 <2 0 <br /> Feb-03 20 2 0 2 0 2 0 <2 0 <2 0 <2 0 <br /> May-03 <20 <2 0 <2 0 <2 0 <2 0 2 0 2 0 <br /> Aug-03 20 2 0 <2 0 <2 0 <2 0 <2 0 <2 0 <br /> Nov-03 20 2 0 2 0 <2 0 <2 0 2 0 <2 0 <br /> Feb-04 -- 20 <2 0 2 0 2 0 2 0 2 0 <2 0 <br /> May-04 <20 2 0 2 0 <2 0 <2 0 <2 0 <2 0 <br /> Aug-04 20 55 2 0 <2 0 2 0 23 <2 0 <br /> Nov-04 <20 20 20 20 20 20 20 <br /> Feb-05 <5 0 <0 5 <0 5 <0 5 <0 5 1 2 <0 5 <br /> May-05 <5 0 06 <0 5 <0 5 <0 5 10 <0 5 <br /> Aug-05 <5 0 <0 5 <0 5 <0 5 <0 5 33 <0 5 <br /> Dec-05 =_ -- <5 0 <0 5 <0 5 <0 5 <0 5 08 <0 5 <br /> Mar-06 <5 0 <0 5 <0 5 <0 5 <0 5 <0 5 <0 5 <br /> Jun-06 20 20 20 20 20 83 20 <br /> MW9 Nov-97 <5 0 93 14 <I 0 <10 -- -- <br /> Feb-9B <100 22 <5 0 <5 0 <5 0 -- <br /> Nov-99 <50 18 <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 15 <5 0 <5 0 <5 0 <5 0 <5 0 <br /> Nov-00 c500 <250 <50 13 <5 0 <5 0 1 <5 0 62 <5 0 <br /> Mar-01 <500 <250 <20 9 8 <2 0 <2 0 2 0 31 <2 0 <br /> May-01 -- 20 85 <2 0 <2 0 2 0 2 0 <2 0 <br /> Aug-01 <20 60 <2 0 1 <2 0 1 -0 2 0 <2 0 <br /> Dec-01 Not Sampled <br /> Feb-02 I L <20 87 <20 2 0 <2 0 72-0—T <2 0 <br /> May-02 Not Sampled <br /> Aug-02 <20 82 <20 2 0 2 0 <2 0 <2 0 <br /> Nov-02 Not Sampled <br /> Feb-03 20 51 <20 2 0 <2 0 <2 0 <2 0 <br /> May-03 Not Sampled <br /> Aug-03 <20 21 1 <20 <20 <2 0 41 <2 0 <br /> Nov-03 Not Sampled <br /> Feb-04 - 20 49 <20 <2 0 <2 0 1 2 0 <2 0 <br /> May-04 Not Sampled <br /> Aug-04 <20 33 <20 <20 <2 0 35 <20 <br /> Nov-04 Not Sampled <br /> Feb-05 — <5 0 15 <05 <05 <0 5 <0 5 <05 <br /> May-05- Not Sampled <br /> Jul <br /> s <br />