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TABLE3 <br /> OXYGENATED COMPOUNDS IN GROUNDWATER <br /> Knowles-Rock <br /> Stockton,California <br /> Page 8 of 12 <br /> (in parrs per billion) <br /> Well Date Methanol Ethanol TSA MTBE DIPS ETBE TAME 1,2 DCA. EDD <br /> M W 10 Nov-97 15 <5 0 76 <1 0 <10 - <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 X50 <5 0 <5-O- <50 <5 0 19 <5 0 <br /> Aug-00 <500 <250 <50 <5 0 <5 0 <5 0 <5 0 23 <5 0 <br /> Nov-00 <500 <250 <50 <5 0 <5 0 <5 0 <5 0 29 <5 0 <br /> Mar 01 <500 <250 <20 42 <2 0 <2 0 <2 0 17 <2 0 <br /> Ma -01 <20 Z 0 <2 0 <2 0 <2 0 7 8 <2 0 <br /> Aug-01 Not Sampled <br /> Dec-01 <20 10 <20 <2 D <2 0 16 Q 0 <br /> Feb-02 Not Sampled <br /> May-02 <20 3--g-1 Q-6 <20 <2 0 16 <2 0 <br /> Au -02 Not Sampled <br /> Nov-02 - <20 42 <20 <20 <2 0 12 <2 0 <br /> Feb-03 Not Sampled <br /> May-03 <20 25 1 <20 <20 <2 0 12 <2 0 <br /> Au,-03 Not Sampled <br /> Nov-03 <20 26 <20 <20 <2 0 10 <2 0 <br /> Feb-04 Not Sampled <br /> May 04 <20 <20 <20 <20 1 <2 4 13 <20 <br /> ug 04 Not Sampled <br /> Nov-04 QO <20 <20 <2 0 1 <2 0 12 <2 0 <br /> Feb-05- Not Sampled <br /> Jun-06 <br /> MW 11 Nov-97 12 <5 0 94 <1 0 <1 0 -- -- <br /> Feb-98 _ <100 <5 0 16 <5 0 <5 0 = <br /> May-98 38 <5 0 11 <l 0 <1 0 <br /> Au -98 44 <1 0 28 <1 0 <1 0 <br /> Nov-98 35 <10 26 <10 <10 <br /> Feb-99 18 <10 22 <10 <10 -- <br /> May-99 <50 <5 0 16 <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 <500 <250 <50 <5 0 95 <5 0 <5 0 27 <5 0 <br /> Aug-00 <500 <250 <50 <5 0 <5 0 <5 0 <5 0 37 <5 0- <br /> Nov-00 <500 <250 <50 <5 0 <5 0 <5 0 <5 0 10 <5 0 <br /> Mar-01 <500 <250 <20 <2 0 <2 0 <2 0 <2 0 42 <2 0 <br /> May-01 -- <20 <2 0 <2 0 <2 0 <2 0 86 <2 0 <br /> Aug-01 Not Sampled <br /> Dec-01 <20 31 <20 <2 0 <20 41 <2 0 <br /> Feb-02 Not Sampled <br /> May-02 <20 7 1 1 <20 <2 D 1 <2 0 j 26 <2 0 <br /> Au -02 Not Sampled <br /> Nov-02 QO Z3 <2 0 <2 0 Q fl 58 <2 0 <br /> Feb-03 Not Sampled <br /> May-03 <20 26 29 <2 0 <2 0 10 <2 0 <br /> Aug-03 Not Sampled <br /> Nov-03 <2078 23 <2 0 <2 0 7 7 120 <br /> Feb-04 Not Sampled <br /> May-04 L<20 120 <2 0 <2 0 <2 0 11 <2 0 <br /> Aug-04 Not Sampled <br /> Nov 04 <40 520 <4 0 <4 0 <4 0 10 <4 0 <br /> Feb-05 Not Sampled <br /> May 05 <50 I20 39 <05 <05 11 <05 <br /> Aug-05 <5 0 59 16 <0 5 <0 5 50 <0 5 <br /> Dec-05 <5 0 260 32 <0 5 <0 5 88 <0 5 <br /> Mar-06 <5 0 91 34 <0 5 <0 5 76 <05 <br /> Sun-06 <5 0 93 51 <0 5 <0 5 13 <0 5 <br />