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<br /> TABLE 3
<br /> OXYGENATED COMPOUNDS IN GROUNDWATER
<br /> Knowles Property
<br /> Stockton,Callfonua
<br /> Page 2 of 5
<br /> (rn parrs per billion)
<br /> We11 Dat* Methanol Ethansd TBA NFrBE DIPE ETBE TAME 1,2DCA EDB
<br /> ' MW2 Nov-97 - r<1,250
<br /> 160 40 40 40 40 N
<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 D <5 0 <5 0 -May-00 4,500 450 45 45 45 45 260 45
<br /> Aug-00 <500 <250 <50 <5 0 <5 0 <5 0 <5 0 <5 Q <5 0
<br /> Nov-00 <500 450 <50 <5 0 <5 0 <5 0 <5 0 15 <5 0
<br /> Mar-01 4,000 <500 <40 <4 0 <4 0 <4 0 <4 0 56 14
<br /> MW3 Nov-97 <35 <5 0 <10 <10 <10
<br /> Feb-98 _ - <100 <5 0 <5 0 <5 0 <5 0 - -
<br /> May-98 - - 21 19 11 4 0 <10 - -
<br /> Aug-98 26 27 <1 0 <10 <10
<br /> Nov-98 - - 450 220 <10 40 <10
<br /> Feb-99 - -- <330 1,600 <65 <65 <65 - --
<br /> I ' May-44 - - <250 1,400 <25 0 45 0 45 0 - -
<br /> Aug-99 400 1,400 40 40 <20
<br /> Nov-99 - - 450 1,500 45 <25 45 - -
<br /> Feb-00 _ - 450 4,000 45 45 45 - --
<br /> May-00 <5,000 4,500 0500 3,800 <50 <50 <50 <50 <50
<br /> Aug-00 <5,000 02,500 <500 1,200 <50 <50 <50 <50 <50
<br /> Nov-00 1 4,500 4,250 450 2,600 45 <25 45 45 45
<br /> Mar-01 45,000 <12,500 <1,000 1,200 <100 400 <100 400 <100
<br /> MW4 Nov-97 - - 4,000 8,700 <400 <400 <400 - -
<br /> Dec-97s .- _ <100,000 14,000 <5,000 <5,000 <5,000
<br /> Feb-98 - - <1,000 890 <50 <50 <50 - -
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<br /> May-98 - - 82 85 <1 0 <10 <10 - -
<br /> Aug-98 130 600 16 <10 <10
<br /> Nov-98 -- -- <500 7,000 <100 <100 <100 - -
<br /> Feb-99 4330 1,700 465 465 465 =
<br /> May-99 -- - <S00 3,400 <50 <50 <50 - -
<br /> Aug-99 - - 0500 7,400 <50 <50 <50
<br /> Nov-99 - -- <500 4,000 <50 <50 050 - --
<br /> Feb-00 - - 450 3,100 45 45 45 -- --
<br /> Ma -00 <10,000 05,000 <1,000 1,400 <100 <100 400 <100 <100
<br /> Aug-00 40 000 <5 000 <1,000 1,600 <]00 <100 <100 <100 <100
<br /> NOV-00 410,000 45,000 <1,000 2,200 <100 <100 <100 <100 <100
<br /> Mar-01 050,000 45000 4,000 1,500 400 <200 400 <200 400
<br /> MW5 Nov-97 <50 <5 0 41 <5 0 <5 0
<br /> Feb-98 - - 4500 4D <30 430
<br /> Nov-99 - - <500 <50 <50 <50 <50 - -
<br /> Feb-00 X50 <5 0 30 <5 0 <5 0
<br /> Ma -00 <500 450 <50 <5 0 37 <5 0 <5 0 <5 0 <5 0
<br /> Aug-00 4500 <1250 450 45 45 45 45 45 45
<br /> Nov-00 <10,000 <5,000 <1,000 <100 400 <1D0 4100 <100 400
<br /> Mar-01 45,000 <12,500 41,000 400 <100 4100 4Q0 <100 400
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