DRC-2009-006929_1 - 0901a06880154450

White Mesa Uranium Mill
Supplemental Chloroform Monitoring Report Addendum
State of Utah
Notice of Violation and Groundwater Corrective Action Order IJDEQ
Docket No UGQ-20-O1
3rd Quarter July through September
2008
Prepared by Denison Mines USA Corp DUSA
December 2009
Introduction
The requirements of the White Mesa Uranium Mill Groundwater Monitoring Plan Quality
Assurance Plan QAP were modified and approved as Revision to the QAP on June 20 2009
With this revision Appendix of the QAP Chloroform Investigation Monitoring Quality
Assurance Plan was modified to include additional reporting requirements for Quarterly
Chloroform Investigation Monitoring Reports Contrary to these requirements and by
inadvertent oversight these new reporting needs were not addressed by the 3M Quarter 2008
Chloroform Monitoring Report In discussions with UDEQ representatives on October 29 2009
and in response to UDEQs findings dated November 10 2009 Denison proposed to amend the
report by means of preparing supplement to the report Accordingly this supplement to the 3rd
Quarter 2008 Report was prepared in order to amend the Report by inclusion of the following
information
reporting of the historic mass removal of chloroform from the shallow aquifer to date
reporting of total historic chloroform mass removed from each pumping well to date
reporting of chloroform mass removed from each pumping well in the quarter
reporting of the total chloroform removed in the quarter
revised isoeoneentration map to display the 70 ug/l isoeoneentration contour line and
listing of the historic analytical results which includes the results of analyses for
carbon tetraehloride chloride chloromethane and methylene chloride
In addition to these data information pertaining to monitoring wells TW4-23 TW4-24 and
TW4-25 with regard to the listing of historic groundwater elevation data and the inclusion of
hydrographs to display groundwater elevation data overtime were not provided in the 3rd Quarter
2008 report Accordingly Denison also agreed in the October 29 2009 discussion with UDEQ
and in response to the November 10 2009 UDEQ correspondence that the 3rd Quarter 2008
would be updated with respect to these wells by means of supplemental amendment of the report
In accordance with these additional information needs this supplemental addendum to the report
was prepared in order to provide the following supplemental information pertaining to the 3rd
Quarter 2008 Quarterly Chloroform Monitoring Report
chloroform mass removal information is updated by this supplement through the creation
of new section of the report Section 4.4.5 Mass Removal
the graphic display of water level elevations is supplemented by providing additional
hydrographs for wells TW4-23 TW4-24 and TW4-25 pertaining to Tab of the Report
the listing of water elevation data is updated to include listings for wells TW4-23 TW4-
24 and TW4-25 pertaining to at Tab of the Repurt
the isoeoneentration map has been modified to display the 70 ug/l concentration contour
line pertaining to Tab of the Report and
historical data relating to analyses for carbon tetraehloride chloride ehloromethane and
methylene chloride are provided as additions to the chloroform and nitrate data already
included at Tab of the Report
SIGNATURE AND CERTIFICATION
This document was prepared by Denison Mines USA Corp on December 18 2009
DENISON
By
David Frydenlund
USA CORP
Vice President Regulatory Affairs and Counsel
Certification
certify under penalty of law that this document and all attachments were prepared under my
direction or supervision in accordance with system designed to assure that qualified personnel
properly gather and evaluate the information submitted Based on my inquiry of the person or
persons who manage the system or those persons directly responsible for gathering the
information the information submitted is to the best of my knowledge and belief true accurate
and complete am aware that there are significant penalties for submitting false information
including the possibility of fine and imprisonment for knowing violations
David Fry enlund
Vice President Regulatory Affairs and Counsel
Denison Mines USA Corp
Section 4.4.5
4.4.5 Mass Removed
Chloroform removal was estimated as of the 1st Quarter 2007 Since that estimation the
mass removed by-well for each quarter has been compiled in the table below indicating that
total of 366.0 pounds of Chloroform have been removed
Chloroform Mass Removal Ibs MW4 TW4-15 TW4-19 TW4-20 Total lbs Removed
Total lbs As of Vt Qtr 2007 36.8 12.9 150.2 87 286.9
2nid Qtr 2007 lbs removed 1.4 0.1 2.5
3rd Qtr 2007 lbs removed 2.2 0.8 2.9 3.1
4th Qtr 2007 lbs removed 1.7 1.0 3.1 4.8 10.6
VtQtr 2008 lbs removed 1.7 0.4 4.6 7.2 13.9
Qtr 2008 lbs removed 1.3 0.5 3.2 9.9 14.9
3rd Qtr 2008 lbs removed 1.2 0.3 15.9 9.3 26.7
Total lbs Chloroform Removed 46.3 16 179.9 123.8 366.0
TabF
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TabG
Water Levels and Data over Time
White Mesa Mill Well TW4-23
Total or
Measuring Measured Total
Water Land Point Depth to Depth to Total
Elevation Surface Elevation Length Of Date Of Water Water Depth Of
WL LSD MP Riser Monitoring blw.MP blw.LSD Well
5605.77 5607.37 1.60 123.3
5538.88 9/13/2007 68.49
5538.80 10/10/2007 68.57
5539.54 3/26/2008 67.83
5539.53 6/24/2008 67.84
5539.68 8/26/2008 67.69
Water Levels and Data over Time
White Mesa Mill Well TW4-24
Total or
Measuring Measured Total
Water Land Point Depth to Depth to Total
Elevation Surface Elevation Length Of Date Of Water Water Depth Of
WL LSD MP Riser Monitoring blw.MP blw.LSD Well
5623.43 5625.43 2.00 122
5568.21 9/13/2007 57.22
5568.10 10/10/2007 57.33
5569.03 3/26/2008 56.40
5568.94 6/24/2008 56.49
5568.94 8/26/2008 56.49
Water Levels and Data over Time
White Mesa Mill Well TW4-25
Total or
Measuring Measured Total
Water Land Point Depth to Depth to
Elevation Surface Elevation Length Of Date Of Water Water
WL LSD MP Riser Monitoring blw.MP blw.LSD
5642.82 5644.72 1.90
Total
Depth Of
Well
143.15
5601.67 9/13/2007 43.05
5601.70 10/10/2007 43.02
5596.92 3/26/2008 47.80
5594.07 6/24/2008 50.65
5593.98 8/26/2008 50.74
TabJ
EXPLANATION
perched menitaring well chewing
ceeceetratien in aG/I
tewpnrery perched mnnitarieg well
ehnwing cencentratian in cOil
perched piezaweter ent sampled
perched mcnitnring well installed April 2005
chewing cnncentretinn in aG/I
temporary perched weniterieg well metalled
April 2005 chewing coeceetratien in uGh
tewperarp perched wnaitaring well installed
May 20g7 ehawieg cancentratian in aG/I
T37S
T38S
NOTES NO not detected NS not sampled
HYDRO
GEO
CHEM INC
KRIGED 3rd QUARTER 2008 CHLOROFORM uG/L
WHITE MESA SITE
N/718000/novOs/chI0908c cr1
TabK
MW-4 Chloroform
ugh
Carbon
tetrachloride
ug/l
Chloromethane
ag/I
Methylene
Chloride
ag/I
Nitrate
mg/i
Chloride
mg/i
28 Sep-99 6200
28-Sep-99 582U
28-Sep-99 6020
15-Mar-00 5520
15-Mar-00 5430
2-Sep-00 5420 9.63
30-Nov 00 6470 9.37
29 Mar-01 4360 8.77
22 Jun-01 6300 9.02
20 Sep-01 5300 9.45
Nov-01 5200
26 Mar-02 4700 8.19
22 May-02 4300 8.21
12 Sep-02 6000 8.45
24 Nov-02 2500 8.1
28-Mar 03 2000 8.3
30-Apr 03 3300 NA
30-May-03 3400 8.2
23-Jun-03 4300 8.2
30-Jul-03 3600 8.1
29-Aug-03 4100 8.4
12 Sep-03 3500 8.5
15-Oct 03 3800 8.1
8-Nov-03 3800 8.0
29-Mar-04 NA NA
22-Jun-04 NA NA
17 Sep-04 3300 6.71
17-Nov 04 4300 7.5
16-Mar-05 2900 6.3
25-May-05 3170 7.1
1-Aug-05 3500 7.0
1-Dec-05 3000 7.0
9-Mar-06 3100 6.0
14 Jun-06 3000 6.0
20-Jul-06 2820 1.2
9-Nov-06 2830 6.4
15-Aug-07 2600 6.2
10-Oct-07 2300 6.2
26-Mar-08 2400 5.8
25-Jun-08 2500 6.09
10-Sep-08 1800 6.36
15-Oct-08 2100 5.86
12-Sep-02 57uu 8.3
24-Nov-02 5000 8.5
28-Mar-03 4500 8.2
23-Jun-03 4700 8.4
12-Sep-03 3400 8.6
10-Nov-03 4500 8.4
29-Mar-04 NA NA
22-Jun-04 NA NA
17-Sep-04 3300 6.83
MW-4 Chloroform
ugh
Carbon
tetrachloride
ugh
Chioromethane
ugh
Methylene
Chloride
ugh
Nitrate
mg/I
Chloride
mg/i
17Nov04 4100
lb-Mar-OS 3700 7.1
25-May-05 3740 7.8
31-Aug-05 3800 10 10 10 6.9
1-Dec-05 3000 50 50 50 NA
20-Jul-06 2820 50 50 50 1.2 48
9-Oct-06 2830 2.1 1.4 6.4 50
9-Mar06 3100 50 50 50 49
14Jun06 3000 50 50 50 49
28 Feb-07 2300 1.6 6.3 47
27 Jun-07 2000 1.8 ci 4S
15-Aug-07 2600 1.9 ci 6.2 47
10 Oct-07 2300 1.7 6.2 4S
26-Mar08 2400 1.7 S.8 42
25-Jun08 2S00 1.6 6.09 42
10 Sep-08 1800 1.8 6.36 3S
TW4-1 Chloroform
ugh
Carbon
tetrachlonde
ug/l
Chloromethane
ug/l
Methylene
Chloride
ug/l
Nitrate
mg/l
Chloride
mg/I
28 Jun-99 1700 7.2
10-Nov-99 5.79
15-Mar-00 1100
10-Apr-00 1490
6-Jun-00 1530
2-Sep 00 2320 5.58
30 Nov-00 3440 7.79
29 Mar-01 2340 7.15
22 Jun-01 6000 8.81
20 Sep-01 NA 12.8
Nov-01 3200 12.4
26 Mar-02 3200 13.1
22-May-02 2800 12.7
12 Sep-02 3300 12.8
24 Nov-02 3500 13.6
28-Mar-03 3000 12.4
23-Jun 03 3600 12.5
12-Sep-03 2700 12.5
8-Nov-03 3400 11.8
29-Mar-04 3200 11
22-Jun-04 3100 8.78
17 Sep-04 2800 10.8
17-Nov-04 3000 11.1
16-Mar-05 2700 9.1
25-May-05 3080 10.6
31-Aug-05 2900 10 10 10 9.8
Dec-05 2400 50 50 50 9.6
20-Jul-06 2840 50 50 50 9.7 51
9-Oct-06 2260 1.4 9.4 47
9-Mar-06 2700 50 50 50 9.2 49
14-Jun-06 2200 50 50 50 9.2 48
28-Feb-07 1900 1.2 8.9 47
27-Jun-07 1900 1.4 45
15-Aug-07 2300 1.3 8.4 43
10-Oct-07 2000 1.3 7.8 43
26-Mar-08 2000 1.3 7.6 39
25-Jun-08 1900 1.1 8.68 39
10-Sep-08 1700 1.3 8.15 35
TW4-2 Chloroform
ugh
Carbon
tetrachloride
ug/l
Chloromethane
ug/l
Methylene
Chloride
ugh
Nitrate
mg/I
Chloride
mg/I
10 Nov-99 2510
2-Sep-00 5220
28-Nov-00 4220 10.7
29-Mar-01 3890 10.2
22-Jun-01 5500 9.67
20-Sep01 4900 11.4
8-Nov01 5300 10.1
26-Mar02 5100 9.98
23-May 02 4700 9.78
12 Sep 02 6000 9.44
24-Nov 02 5400 10.4
28-Mar-03 4700 9.5
23-Jun-03 5100 9.6
12-Sep-03 3200 8.6
8-Nov-03 4700 9.7
29-Mar-04 4200 9.14
22-Jun-04 4300 8.22
17 Sep-04 4100 8.4
17-Nov-04 4500 8.6
16-Mar 05 3700 7.7
25-May-05 3750 8.6
31-Aug-05 3900 10 10 10 8.0
12/1/2005 3500 50 50 50 7.8
3/9/2006 3800 50 50 50 7.5 56
6/14/2006 3200 50 50 50 7.1 56
7/20/2006 4120 50 50 50 7.4 54
11/8/2006 3420 2.3 7.6 55
2/28/2007 2900 1.8 7.3 54
6/27/2007 3000 2.5 7.8 50
8/15/2007 340 2.2 7.3 49
10/10/2007 3200 2.1 6.9 51
3/26/2008 3300 2.3 ci 6.9 48
6/25/2008 3100 2.2 7.44 46
9/10/2008 2800 2.4 7.1 42
TW4-3 Chloroform
ag/I
Carbon
tetrachloride
ag/i
Chioromethane
ag/i
Methylene
Chloride
ag/i
Nitrate
mg/i
Chloride
mg/l
28-Jun-99 3500 7.6
29-Nov-99 702
15-Mar-00 834
2-Sep 00 836 1.56
29-Nov 00 836 1.97
27 Mar-01 347 1.85
21 Jun-01 390 2.61
20-Sep-01 300 3.06
Nov-01 170 3.6
26Mar02 11 3.87
21 May-02 204 4.34
12 Sep-02 203 4.32
24 Nov-02 102 4.9
28-Mar 03 ND 4.6
23-Jun 03 ND 4.8
12-Sep-03 ND 4.3
8-Nov-03 ND 4.8
29-Mar-04 ND 4.48
22-Jun-04 ND 3.68
17-Sep-04 ND 3.88
17-Nov 04 ND 4.1
16-Mar-OS ND 3.5
25-May-OS ND 3.7
31-Aug-OS ND 3.5
Dec-OS ND 2.3 3.3
9-Mar 06 ND 2.2 3.3 26
14-Jun-06 ND cl 3.2 26
20-Jul-06 ND 1.6 2.9 26
8-Nov-06 ND 1.5 23
28-Feb-07 ND 3.1 22
27-Jun-07 ND 3.3 23
15-Aug-07 ND 3.1 24
10-Sep-07 ND 2.8 27
26-Mar-08 ND 2.8 21
25 Jun-08 ND 2.85 19
10-Sep-08 ND 2.66 19
TW4-4 Chloroform
ugh
Carbon
tetrachioride
ugh
Chloromethane
ugh
Methylene
Chloride
u/i
Nitrate
mg/i
Chloride
mg/I
6Jun0O ND
Sep-00 ND
28-Nov-00 3.85
28-Mar-01 2260 1.02
20-Jun-01 3100 14.5
20-Sep-01 3200 14
8-Nov-01 2900 14.8
26-Mar 02 3400 15
22-May-02 3200 13.2
12-Sep 02 4000 13.4
24-Nov-02 3800 12.6
28-Mar-03 3300 13.4
23-Jun-03 3600 12.8
12-Sep-03 2900 12.3
8-Nov-03 3500 12.3
29-Mar-04 3200 12.2
22-Jun-04 3500 12.1
17-Sep-04 3100 11.1
17-Nov-04 3600 10.8
16-Mar-05 3100 11.6
25-May 05 2400 10
31Aug05 3200 10 10 10 11.3
1-Dec-05 2800 50 50 50 10.2
9-Mar-06 2900 50 50 50 9.5 51
14-Jun-06 2600 50 50 50 8.6 48
20 Jul-06 2850 50 50 50 9.7 50
8-Nov06 2670 1.7 10.1 49
28-Feb-07 2200 1.5 49
27-Jun-07 2400 1.7 9.4 47
15 Aug-07 2700 1.5 9.5 45
10 Oct-07 2500 1.5 9.5 47
26-Mar-08 2800 1.6 9.2 43
25-Jun-08 2500 1.5 10.8 42
10-Sep08 2200 1.4 8.83 39
TW4-5 Chloroform
ug/l
Carbon
tetraehloride
ug/l
Chioromethane
ug/l
Methylene
Chloride
ug/l
Nitrate
mg/I
Chloride
mg/I
20 Dec-99 29.5
15-Mar-00 49
2-Sep-00 124
29-Nov-00 255
28-Mar-01 236
20-Jun 01 240
20-Sep-01 240
7-Nov-01 260
26 Mar-02 260
22 May-02 300
12-Sep-02 330
24 Nov-02 260
28 Mar-03 240
23 Jun-03 290
12-Sep-03 200
8-Nov 03 240
29-Mar-04 210
22-Jun-04 200
17-Sep-04 150
17-Nov-04 180
16-Mar-05 120
25May05 113
1-Aug-05 82 2.5 5.8 2.5
1-Dec-05 63 2.5 2.5 2.5
9-Mar-06 66 2.5 3.1 2.5 52
14-Jun-06 51 2.5 2.5 5.9 51
20 Jul-06 53.7 6.7 54
8-Nov06 47.1 2.9 55
28-Feb 07 33 7.8 57
27-Jun-07 26 45
15-Aug-07 9.2 7.7 38
10-Oct-07 9.4 8.2 39
26-Mar-08 11 7.4 36
25-Jun-08 9.3 8.7 37
10-Sep-08 11 7.91 34
TW4-6 Chloroform
ugh
Carbon
tetrachloride
ugh
Chloromethane
ugh
Methyienc
Chloride
ugh
Nitrate
mg/i
Chloride
mg/i
Jun-00 ND
2-Sep-U0 ND
28-Nov-00 ND ND
26-Mar-01 ND .13
20-Jun 01 ND ND
20-Sep 01 3.6 ND
7-Nov-01 1.00 ND
26 Mar-02 ND ND
21 May-02 ND ND
12-Sep-02 ND ND
24 Nov-02 ND ND
28-Mar-03 ND 0.1
23-Jun-03 ND ND
12 Sep-03 ND ND
Nov-03 ND ND
29-Mar 04 ND ND
22-Jun 04 ND ND
17-Sep 04 ND ND
17-Nov-04 ND ND
16-Mar-05 ND 0.2
25-May-OS ND 0.4
31 Aug-05 10.0 10 2.8 10 0.8
1-Dec 05 17 1.3 0.9
9-Mar-06 31 1.2 31
14-Jun-06 19 1.0 30
20-Jul-06 11 0.6 37
Nov-06 42.8 1.4 65
28-Feb-07 46 1.5 32
27Jun07 11 0.6 38
15-Aug-07 18 0.7 36
10-Oct-07 18 0.8 38
26-3-08 52 1.1 33
25-Jun-08 24 0.9 35
10-Sep-08 39 1.14 35
TW4-7 Chloroform
ugIl
Carbon
tetrachloride
ugh
Chioromethane
ugh
Methylene
Chloride
ugh
Nitrate
mgIl
Chloride
mgfl
29-Nov 99 256 __________
15 Mar-00 616
Sep-00 698
29-Nov-00 684 1.99
28-Mar-01 747 2.46
20-Jun-01 1100 2.65
20-Sep-01 1200 3.38
8-Nov-01 1100 2.5
26-Mar 02 1500 3.76
23-May 02 1600 3.89
12-Sep02 1500 3.18
24-Nov 02 2300 4.6
28-Mar 03 1800 4.8
23-Jun-03 5200 7.6
12-Sep-03 3600 7.6
8-Nov-03 4500 7.1
29-Mar-04 2500 4.63
22-Jun-04 2900 4.83
17-Sep-04 3100 5.59
17 Nov-04 3800
16-Mar-05 3100 5.2
25 May 05 2700 5.4
31-Aug-05 3100 10 10 10 5.2
1-Dec-05 2500 50 50 50 5.3
9-Mar-06 1900 50 50 50 1.0 48
14-Jun-06 2200 50 50 50 4.5 47
20-Jul-06 2140 50 50 50 4.7 51
8-Nov-06 2160 1.5 4.6 49
28-Feb-07 1800 1.1 47
27-Jun-07 2600 1.5 5.1 45
14 Aug-07 2300 1.4 4.7 44
10 Oct-07 1900 1.2 4.7 45
26-Mar-08 2200 1.3 4.2 43
25-Jun-08 1800 1.3 4.8 43
10-Sep-08 1600 1.4 4.16 35
TW4-8 Chloroform
ugh
Carbon
tetrachloride
ugil
Chloromethane
ug/l
Methylene
Chloride
ugh
Nitrate
mg/i
Chloride
mg/i
29-Nov-99 ND
15-Mar00 21.8
Sep 00 102
29-Nov-00 107 ND
26-Mar-01 116 ND
20-Jun-01 180 ND
20-Sep-01 180 0.35
7-Nov-01 180 ND
26-Mar-02 190 0.62
22-May-02 210 0.77
12-Sep-02 300 ND
24-Nov-02 450 ND
28-Mar-03 320 0.8
23-Jun-03 420 ND
12-Sep-03 66 ND
8-Nov-03 21.0 0.1
29-Mar-04 24 0.65
22-Jun-04 110 0.52
17 Sep-04 120 ND
17-Nov 04 120 ND
16-Mar-05 10.0 ND
25-May-OS ND 0.2
31-Aug-05 1.1 ND
1-Dec-OS ND 1.7 ND
9-Mar-06 1.3 0.3 39
14Jun06 ND 2.1 ND 37
20-Jul-06 ND 1.8 0.1 39
8-Nov-06 ND ND 40
28-Feb-07 2.S0 0.7 39
27 Jun-07 2.5 0.2 42
15-Aug-07 1.5 ND 42
10-Oct-07 3.5 0.5 43
26-Mar08 ND 0.1 46
25-Jun-08 ND ND 45
10-Sep-08 ND ci ND 39
TW4-9 Chloroform
ug/l
Carbon
tetrachloride
ug/l
Chloromethane
ugh
Methylene
Chloride
ugh
Nitrate
mg/l
Chloride
mg/I
20-Dec-99 4.24
15-Mar-UU 1.88
2-Sep-00 14.2
29-Nov 00 39.4 ND
27-Mar 01 43.6 ND
20Jun01 59 .15
20 Sep-01 19 0.40
Nov-01 49 0.1
26-Mar-02 41 0.5
22 May-02 38 0.65
12-Sep-02 49 0.2
24-Nov-U2 51 0.o
28-Mar-03 34 0.6
23-Jun-03 33 0.8
12-Sep-03 32 1.1
Nov-03 46 1.1
29-Mar 04 48 0.82
22-Jun-04 48 0.75
17-Sep-04 39 0.81
17-Nov-04 26 1.2
16-Mar-05 3.8 1.3
25-May-05 1.2 1.3
31 Aug-05 ND 2.9 1.3
1-Dec05 ND 1.3
9-Mar-06 ND 2.6 1.5 38
14-Jun-06 ND 2.7 1.5 39
20-Jul-06 ND 0.9 41
Nov-06 ND 0.7 44
28-Feb 07 ND 0.6 44
27-Jun-07 21 1.3 42
15-Aug-07 9.5 1.8 38
10-Oct-07 8.7 40
26-Mar-08 1.3 2.1 35
25-Jun-08 1.0 2.3 35
10-Sep-08 ND ccl 2.79 28
TW4-1O Chloroform
ugh
Carbon
tetrachloride
ug/l
Chioromethane
ugIl
Methylene
Chloride
ug/l
Nitrate
mg/l
Chloride
mgIl
21 Jan-02 14
26-Mar-02 16 0.14
21-May-02 17 0.11
12-Sep-02 6.0 ND
24-Nov 02 14 ND
28-Mar 03 29 0.2
23Jun03 110 0.4
12 Sep-03 74 0.4
Nov-03 75 0.3
29 Mar-04 22 0.1
22 Jun-04 32 ND
17-Sep-04 63 0.46
17-Nov-04 120 0.4
16 Mar-05 140 1.6
25-May-05 62.4 0.8
31 Aug-05 110 1.1
1-Dec 05 300 2.5 2.5 6.2 3.3
9-Mar-06 190 50 50 2.4 50
14-Jun-06 300 50 50 3.5 54
20-Jul-06 504.00 50 50 6.8 61
8-Nov-06 452.00 1.6 5.7 58
28 Feb-07 500 7.6 62
27 Jun-07 350 5.1 54
15-Aug07 660 7.3 59
10-Oct-07 470 6.7 59
26-Mar-08 620 7.3 55
25 Jun-08 720 9.91 58
10-Sep08 680 9.23 51
TW4-11 Chloroform
ugh
Carbon
tetrachloride
ugh
Chloromethane
ug/l
Methylene
Chloride
ugh
Nitrate
mg/I
Chloride
mg/I
21 Jan-02 4700
26-Mar-02 4900 9.60
22-May-02 5200 9.07
12-Sep-02 6200 8.84
24-Nov-02 5800 9.7
28-Mar 03 5100 9.7
23-Jun 03 5700 9.4
12 Sep-03 4600 9.9
Nov-03 5200 9.3
29 Mar-04 5300 9.07
22 Jun-04 5700 8.74
17-Sep-04 4800 8.75
17-Nov-04 5800 9.7
16-Mar-05 4400 8.7
25-May-05 3590 10.3
31-Aug-05 4400 10 10 10 9.4
1-Dec-05 4400 100 100 100 9.4
9-Mar-06 4400 50 50 50 9.2 56
14-Jun-06 4300 50 50 50 10 56
20-Jul-06 4080 50 50 50 10 55
Nov-06 3660 1.7 2.7 1.3 10 55
28-Feb 07 3500 1.3 1.6 10.1 54
27-Jun-07 3800 1.6 1.1 10.6 53
15-Aug-07 4500 1.7 1.1 10.2 53
10-Oct-07 4400 1.6 1.2 9.8 53
26 Mar-08 340 7.7 63
25-Jun08 640 7.28 46
10-Sep-08 900 7.93 42
TW4-12 Chloroform
ugfl
Carbon
tetrachioride
ug/l
Chloromethane
ugh
Methylene
Chloride
ugh
Nitrate
mg/i
Chloride
mg/i
12-Sep-02 1.5 2.54
24-Nov-U2 ND 2.2
28-Mar-03 ND 1.9
23-Jun-03 ND 1.8
12-Sep03 ND 1.8
Nov-03 ND 1.6
29 Mar-04 ND 1.58
22-Jun-04 ND 1.4
17-Sep-04 ND 1.24
17-Nov-04 ND 1.5
16-Mar-05 ND 1.4
25-May-OS ND 1.6
31-Aug-OS ND 5.8 1.5
1-Dec-OS ND cl 14
9-Mar-06 ND 1.3 19
14-Jun-06 ND 1.4 16
20Jul06 ND 1.4 16
8-Nov06 ND 1.4 16
28-Feb-07 ND 1.5 16
27-Jun-07 ND 15 18
Aug-15-07 ND 1.4 29
10-Oct-07 ND 1.4 16
26 Mar-08 ND 1.6 16
25-Jun08 ND 2.69 19
10-Sep-08 ND 2.65 18
TW4-13 Chloroform
ugh
Carbon
tetrachionde
ug/l
Chloromethane
uWl
Methylene
Chloride
ug/l
Nitrate
mg/I
Chloride
mg/l
12-Sep-02 ND ND
24-Nov 02 ND ND
28 Mar 03 ND 0.2
23 Jun-03 ND 0.2
12-Sep-03 ND ND
9-Nov-03 ND 0.9
29-Mar-04 ND 0.12
22-Jun-04 ND 0.17
17-Sep-04 ND 4.43
17-Nov-04 ND 4.7
16-Mar-05 ND 4.2
25-May-OS ND 4.3
31-Aug-OS ND 3.1 4.6
1-Dec-OS ND 4.3
9-Mar-06 ND 1.7 4.2 67
14-Jun-06 ND 1.4 4.9 66
20-Jul-06 ND 4.3 65
8-Nov-06 ND 0.8 33
28 Feb-07 ND 59
27-Jun-07 ND 4.6 59
15-Aug07 ND 4.4 58
10-Oct-07 ND 4.1 58
26-Mar-08 ND 3.8 54
25-Jun-08 ND 4.24 58
10 Sep-08 ND 4.26 50
TW4-14 Chloroform
ugIl
Carbon
tetrachloride
ugh
Chloromethane
ugIl
Methylene
Chloride
ugh
Nitrate
mg/i
Chloride
mg/i
8-Nov-06 ND ND ND ND 2.4 37
2-Feb-07 ND ND ND ND 2.3 38
27-Jun-07 ND ND ND ND 1.4 38
15-Aug-07 ND ND ND ND 1.1 36
10-Oct 08 ND ND ND ND 0.8 38
26 Mar-08 ND ND ND ND 0.4 57
25 Jun-08 ND ND ND ND 1.56 35
10-Sep-08 ND ND ND ND 1.34 34
TW4-15
MW-26 Chloroform
ugh
Carbon
tetrachloride
ugh
Chioromethane
ugh
Methylene
Chloride
ugh
Nitrate
mg/i
Chloride
mg/I
12-Sep-02 2.6 ND
24-Nov-02 ND ND
28 Mar-03 ND 0.1
23 Jun-03 7800 14.5
15-Aug-03 7400 16.8
12-Sep-03 2500 2.7
25-Sep-03 2600 2.5
29-Oct-03 3100 3.1
8-Nov-03 3000 2.8
29-Mar-04 NA NA
22-Jun-04 NA NA
17-Sep-04 1400 0.53
17-Nov-04 300 0.2
16-Mar-05 310 0.3
30-Mar-05 230 0.2
25-May-05 442 0.2
31-Aug-05 960 5.4 0.2
1-Dec-05 1000 50 50 0.3
9-Mar-06 1100 50 50 50 0.2 52
14-Jun-06 830 50 50 50 0.2 52
20-Jul-06 2170 50 50 50 1.4 65
8-Nov-06 282 2.8 0.3 54
28-Feb-07 570 5.5 0.5 56
27-Jun-07 300 13 0.4 49
15-Aug-07 1400 36 57
10-Oct-07 2000 14 0.6 57
26-Mar-08 930 40 0.1 49
25-Jun-08 1300 53 0.56 57
10 Sep-08 630 24 0.24 44
TW4-16 Chloroform
ug/l
Carbon
tetrachioride
ug/l
Chioromethane
uWl
Methylene
Chloride
ugh
Nitrate
mg/I
Chloride
mg/I
12 Sep 02 140 ND
24 Nov-02 200 ND
28-Mar-03 260 ND
23-Jun-03 370 ND
12-Sep-03 350 ND
8-Nov-03 400 ND
29-Mar-04 430 ND
22-Jun-04 530 ND
17 Sep 04 400 ND
17Nov04 350 ND
16 Mar 05 240 ND
25 May 05 212 ND
31-Aug05 85 3.2 43 ND
1-Dec-05 14 2.6 5.9 1.4
9-Mar-06 39 1.1 21 3.0 60
14-Jun-06 13 2.4 8.9 1.9 55
20-Jul-06 2.7 2.7 60
8-Nov-06 13.6 9.2 5.6 62
28-Feb-07 8.70 6.5 12.3 79
27-Jun-07 2.60 1.8 9.9 75
15-Aug-07 7.10 5.1 5.4 66
10-Oct 07 1.40 4.4 69
26-Mar-08 11.00 26 ND 52
25-Jun-08 ND 1.46 58
10-Sep-08 10.00 14 10.5 71
TW4-17
MW-32
Chloroform
ng/l
Carbon
tetrachloride
ugh
Chloromethane
ugh
Methylene
Chloride
ug/l
Nitrate
mg/i
Chloride
mg/i
12-Sep-02 1.6 ND
24 Nov U2 ND NJ
28-Mar-03 ND ND
23-Jun-03 ND ND
12-Sep-03 ND ND
8-Nov-03 ND ND
29-Mar-04 ND ND
22-Jun-04 ND ND
17-Sep 04 ND ND
17-Nov 04 ND ND
16-Mar-05 ND ND
30-Mar-OS ND ND
25 -May-05 ND ND
31-Aug-OS ND 3.2 ND
1-Dec-OS ND ND 32
9-Mar-06 ND ND 30
14-Jun-06 ND 3.5 ND 32
20-Jul-06 ND 1.8 ND 31
8-Nov-06 ND 1.5 ND 32
28-Feb-07 ND ND 32
27Jun07 ND ND 31
15Aug07 ND ND 32
10-Oct-07 ND ND 31
26-Mar-08 ND ND 29
25-Jun-08 ND ND 30
10Sep08 ND ND 26
TW4-18 Chloroform
ugh
Carbon
tetrachloride
ug/l
Chloromethane
ugh
Methylene
Chloride
ug/l
Nitrate
mg/I
Chloride
mg/l
12-Sep-02 440 1.49
24-Nov-02 240 13.3
28-Mar-03 160 13.1
23-Jun-03 110 19
12-Sep-03 68 19.9
Nov 03 84 20.7
29Mar04 90 14
22-Jun-04 82 12.2
17-Sep-04 38 14.5
17-Nov-04 51 17.3
16-Mar-05 38 14.1
25-May-05 29.8 12.9
31 Aug-05 39 13.3
1-Dec-05 14 2.8 7.3
9-Mar-06 12 1.1 5.9 5.9
14Jun06 12 1.6 4.7 35
20Jul06 10.80 2.7 6.1 35
8-Nov-06 139.00 8.7 34
28-Feb-07 9.2 5.1 30
27-Jun-07 8.0 4.9 28
15-Aug-07 8.9 32
10Oct08 7.4 4.4 27
26-Mar 08 6.4 0.7 23
25-Jun-08 5.7 4.55 23
10-Sep-08 8.0 4.68 26
TW4-19 Chloroform
ugfl
Carbon
tetraehloride
ag/I
Chloromethane
ag/i
Methylene
Chloride
ag/I
Nitrate
mg/I
Chloride
mg/l
12 Sep-02 7700 47.6
24-Nov-02 5400 42
28-Mar-03 4200 61.4
15-May-03 4700 NA
23-Jun-03 4500 11.4
15-Jul-03 2400 6.8
15-Aug 03 2600
12-Sep 03 2500 5.7
25 Sep 03 4600 9.2
29 Oct-03 4600 7.7
Nov 03 2600 4.8
29 Mar-04 NA NA
22 Jun 04 NA NA
16-Aug04 7100 9.91
17-Sep 04 2600 4.5
17-Nov-04 1800 3.6
16-Mar-05 2200 5.3
25-May-05 1200 5.7
31-Aug-05 1400 4.6
1-Dec-05 2800 50 50 50 ND
9-Mar-06 1200 50 50 50 4.0 86
14Jun06 1100 50 50 50 5.2 116
20-Jul06 1120 50 50 50 4.3 123
8-Nov-07 1050 1.6 2.6 4.6 134
28-Feb-07 1200 1.3 133
27-Jun-07 1800 2.3
15-Aug-07 1100 1.9 4.1 129
10-Oct-08 1100 1.9 132
26-Mar-08 1800 2.9 2.2 131
25-Jun-08 1000 2.81 128
10-Sep-08 3600 8.6 36.2 113
TW4-20 Chloroform
ag/i
Carbon
tetrachioride
ugh
Chioromethane
ugh
Methylene
Chloride
ugh
Nitrate
mg/I
Chloride
mg/i
25-May-05 39000 NS NS NS 10.1 NS
31-Aug-05 3800 ND ND ND 2.9 NS
1-Dec-05 19000 ND ND ND 1.8 131
9-Mar 06 9200 ND ND ND 3.8 120
14Jun06 61000 ND ND ND 9.4 235
20-Jul-06 5300 ND ND ND 2.9 134
8-Nov-06 11000 7.1 1.9 2.2 3.5 124
28-Feb-07 4400 3.1 ND 1.1 4.2 124
27-Jun-07 1800 2.2 ND ND 2.3 112
15-Aug-07 5200 3.5 ND 1.8 2.1 117
10-Oct-08 9000 6.8 ND 1.9 5.6 170
26-Mar-US 13000 9.0 ND 1.5 0.9 132
25-Jun-08 30000 13 ND 1.2 7.96 191
10-Sep-08 21000 15 ND 3.7 4.44 156
TW4-21 Chloroform
ugh
Carbon
tetraehloride
ugh
Chloromethane
ugh
Methylene
Chloride
ugh
Nitrate
mg/i
Chloride
mg/i
25-May-05 192 NS NS NS 14.6 NS
31-Aug-05 78 ND ND ND 10.1 NS
1-Dec-05 86 ND 1.0 ND 9.6 353
9Mar06 120 ND ND ND 8.5 347
14-Jun-06 130 ND ND ND 10.2 318
20-Jul-06 106 ND ND ND 8.9 357
8-Nov-06 139 2.0 ND ND 8.7 296
28-Feb-07 160 1.8 ND ND 8.7 306
27-Jun-07 300 5.8 ND ND 8.6 327
15-Aug-07 140 ND ND ND 8.6 300
10-Oct-07 120 ND ND ND 8.3 288
20-Mar-08 390 7.0 ND ND 14.3 331
25-Jun-08 160 1.7 ND ND 8.81 271
10-Sep-08 120 1.6 ND ND 7.57 244
TW4-22 Chloroform
ugh
Carbon
tetrachloride
ugh
Chioromethane
ugh
Methylene
Chloride
ug/l
Nitrate
mg/I
Chloride
mg/I
25 May 05 340 NS NS NS 18.2 NS
31-Aug-05 290 ND ND ND 15.7 NS
1-Dec-05 320 ND ND ND 15.1 263
9-Mar-06 390 ND ND ND 15.3 236
06/14/06 280 ND ND ND 14.3 221
07/20/06 864 ND ND ND 14.5 221
11/08/06 350 ND 1.6 ND 15.9 236
28-Feb 07 440 ND ND ND 20.9 347
06/27/07 740 ND ND ND 19.3 273
Aug 15-07 530 ND ND ND 19.3 259
Oct 10-08 440 ND ND ND 18.8 238
26 Mar-08 1400 ND ND ND 39.1 519
25 Jun-08 1200 ND ND ND 41.9 271
10-Sep08 6300 1.3 ND ND 38.7 524
TW4-23 Chloroform
ugh
Carbon
tetrachloride
ugh
Chloromethane
ug/l
Methylene
Chloride
ug/l
Nitrate
mg/I
Chloride
mg/I
06/27/07 ND ND ND ND ND 47
Aug-15-07 ND ND ND ND ND 46
Oct-10-08 ND ND ND ND ND 43
26-Mar 08 ND ND ND ND ND 41
25 Jun-08 ND ND ND ND ND 41
10 Sep-08 ND ND ND ND ND 35
TW4-24 Chloroform
ugh
Carbon
tetrachloride
ug/1
Chloromethane
ugh
Methylene
Chloride
ugh
Nitrate
mg/I
Chloride
mg/I
06/27/07 2.6 ND ND ND 26.1 770
Aug 15 07 2.2 ND ND ND 29.0 791
Oct-10-08 1.5 ND ND ND 24.7 692
26-Mar-08 1.5 ND ND ND 24.4 740
25-Jun-08 1.4 ND ND ND 45.3 834
10-Sep-08 2.9 ND ND ND 38.4 1180
TW4-25 Chloroform
ag/i
Carbon
tetrachloride
ag/i
Chloromethane
ug/l
Methylene
Chloride
ug/l
Nitrate
mg/i
Chloride
mg/i
06/27/07 ND ND ND ND 17.1 395
Aug-15-07 ND ND ND ND 16.7 32
OctlOO8 ND ND ND ND 17.0 356
26 Mar-08 ND ND ND ND 18.7 374
25-Jun-08 ND ND ND ND 22.1 344
10-Sep-08 ND ND ND ND 18.8 333