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TA BLE 3
<br /> OXYGENATED COMPOUNDS IN GROUNDWATER
<br /> Knowles-Roek
<br /> Stockton,California
<br /> ' Page 10 of 12
<br /> (in parrs per billion)
<br /> We11 Date:' Methanol ' Ethanol: TBA:':: MTBE I)tkE ETHIE TAME 1,2 DCA EDB'::
<br /> MW l3 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 /> 1 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 15,000 <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 <25,000 <2,000 <200 <200 <200 <200 <200 400
<br /> May-01 -- <2,000 <200 <200 <200 <200 <200 <200
<br /> ' Aug-01-
<br /> Not Sampled
<br /> Nov-02
<br /> Jan-03 Well Destroyed
<br /> MW13B Jan-03 <1,0o0 <100 <100 <100 <100 <100 <100
<br /> Feb-03 =_ <2000 <200 <200 <200 <200 <200 <200
<br /> May-03 <2,000 <200 <200 <200 <200 940 <200
<br /> Aug-03 <2,000 <200 <200 <200 <200 230 <200
<br /> Nov-03 <2,000 <200 <200 <200 <200 <200 <200
<br /> ' Feb-04 <2,000 <200 <200 <200 <200 <200 <200
<br /> May-04 <1,000 <100 <100 <100 <100 530 160
<br /> Aug-04 <2,000 <200 <200 <200 <200 1,200 <200
<br /> Nov-04 -- <500 <50 <50 <50 <50 <50 <50
<br /> Feb-05 <2,000 1200 1200 1200 <200 1,200 <200
<br /> May-05 Not Sampled
<br /> Aug-05 - <2,000 1 1200 1 <200 <200 <200 1,300 <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-01 <500 34,000 <50 <50 <so 370 <50
<br /> Feb-02 <1,000 70,000 <100 <100 <100 <100 <100
<br /> I ' May-02 -- <16,006 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 <10,000 100,000 <1,000 <1,000 <1,000 <1,000 <1,000
<br /> Aug-03 <2,000 63,000 <200 <200 <200 <200 <200
<br /> Nov-03 <4,000 82,000 <400 <400 <400 <400 <400
<br /> ' Feb-04 <2,000 57,000 4.00 <200 <200 <200 <200
<br /> May-04 <2,0001 26,000 <200 <200 <200 <200 <200
<br /> Aug-04 <4,000 43,000 <400 <400 <400 <400 <400
<br /> Nov-04 <1,000 45,000 <100 <100 <100 <!04 <100
<br /> t Feb-05 <4,000 38,000 <400 <400 <400 <400 <400
<br /> May-05
<br /> Aug-05Not Sampled
<br /> MW 15A Jan-03 <20 34 <2.0 <2.0 <2.0 <2,0 <2.0
<br /> Feb-03 ._ <20 59 <2,0 <2.0 <2.0 4.5 <2.0
<br /> May-03 <20 33 <2.0 <2.0 <2.0 4.7 <2.0
<br /> Aug-03 <20 8.6 <2.0 <2.0 <2.0 2.6 <2.0
<br /> Nov-03 <20 6.9 <2.0 <2.0 <2.0 4.3 <2.0
<br /> ' Feb-04 <20 9.3 <2.0 <2.0 <2.0 5.5 <2.0
<br /> May-04 <20 4.6 <2.0 <2,0 <2.0 6.0 <2,0
<br /> . Aug-04 == <20 3.0 <2.0 <2.0 <2.0 3.2 <2.0
<br /> Nov-04 <20 4.0 <2.0 4.0 <2.0 <2.0 <2.0
<br /> ' Feb-05 -- <5.0 <0.5 <0.5 <0.5 <0.5 0.8 <0,5
<br /> May-05 <5.0 4.9 <0.5 <0.5 <0.5 7.7 10.5
<br /> Au -05 <5.0 2.6 <0.5 <0.5 <0.5 5.3 <0.5
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