DRC-2014-004848 - 0901a0688047c0b5

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OS
State of Utah
GARY R. HERBERT
Governor
Spencer J. Cox
Lieutenant Governor
Department of
Environmental Quality
Amanda Smith
Executive Director
DIVISION OF RADIATION CONTROL
Rusty Lundberg
Director
MEMORANDUM
TO:
FROM:
DATE:
SUBJECT:
//-/ 7
DRC-2014-004848
Phil
Dean Henderson
Aug 8,2014
Review ofthe 3rd Quarter and 4th Quarter 2013 and the 1st Quarter 2014 Nitrate Monitoring
Report for the Nitrate Contamination Investigation, Energy Fuels Resources (USA) Inc.
("EFR") White Mesa Uranium Mill, near Blanding, Utah
The Utah Division of Radiation Control ("DRC") has reviewed the November 18, 2013, White Mesa
Uranium Mill 3rd Quarter 2013 Nitrate Monitoring Report ("3rd QR13"), February 21, 2013, White Mesa
Uranium Mill 4th Quarter 2013 Nitrate Monitoring Report ("4th QR13") and May 19, 2014, White Mesa
Uranium Mill 1st Quarter 2014 Nitrate Monitoring Report ("1st QR14") for the Nitrate Contamination
Investigation.
For the review of this Report the following regulatory enforcement documents were used:
Corrective Action Plan for Nitrate White Mesa Uranium Mill near Blanding, Utah, May 7, 2012,
("CAP")
• The EFR Quality Assurance Plan, June 7, 2012, Revision. 7.2 ("QAP")
REVIEW
Monitor Well Sampling for 3rd and 4th 2013, and 1st 2014 Quarters
In each quarter the following monitor wells were sampled and analyzed for inorganic chloride and nitrate +
nitrite (as N) as required in the CAP:
TWN-1, TWN-2, TWN-3, TWN-4, TWN-7, TWN-18, TW4-22, TWN-24, TWN-25, Piezometer 1,
Piezometer 2, and Piezometer 3.
In each quarter the monitoring wells were purged using the three approved QAP well purging strategies
and meet QAP requirements for each strategy:
1. Purging two casing volumes with stable field parameters for specific conductivity,
turbidity, pH, redox potential, and water temperature (within 10% RPD):
195 North 1950 West • Salt Lake City, UT
Mailing Address: P.O. Box 144850 • Salt Lake City, UT 84114-4850
Telephone [phone] • Fax [phone] • T.D.D. [phone]
www.deq.utah.gov
Printed on 100% recycled paper
Page 2
Wells: TWN-1, TWN-4, and TWN-18.
2. Purging a well to dryness and stability of field parameters for pH, specific conductivity, and
water temperature only after recovery:
Wells: TWN-3 and TWN-7
3. Continuously Pumped Wells that are considered sufficiently evacuated to immediately collect
a sample:
Wells: TW4-22, TW4-24, and TW4-25
Chloride and nitrate + nitrite (as N) were analyzed for methods consistent with the requirements of the
QAP.
QAQC
Holding Times
The method holding times for each quarter and parameter for samples collected at each monitor well were
received and analyzed within the required holding times in the QAP.
Receipt Temperature
In each quarter all samples were received within the required QAP temperature limit of 6° C.
Detection Limits
In each quarter all sample sets for each were measured and reported to the required QAP reporting limits.
Sample Duplicates
One duplicate sample was collected for each quarter. All duplicate samples analytical results for the
sample/duplicate pairs were within the 20% acceptance limits as required in the QAP (see Table 2 below).
Groundwater Head Monitoring for 3rd and 4th 2013, and 1st 2014 Quarters
Depth to groundwater was measured in the following wells and/or piezometers as required in Part I.E.3 of
the Permit:
• The quarterly groundwater compliance monitoring wells.
• Existing monitoring well MW-4 and all of the temporary chloroform investigation
wells,
• Piezometers P-1, P-2, P-3, P-4 and P-5.
• MW-20, MW-22 and MW-34
• Nitrate monitoring wells.
• The DR piezometers which were installed during the Southwest Hydrologic
Investigation.
• In addition to the above, depth to water measurements are routinely observed in conjunction with
sampling events for all wells sampled during quarterly and accelerated efforts, regardless of the
sampling purpose.
All well levels used for groundwater contour mapping were measured and recorded within 5 calendar days
of each other.
Page 3
Estimation of Pumped Nitrate Mass Removal
The 3rd QR13 reported an estimate of 177 lbs. of nitrate was removed from the chloroform pumping wells
(MW-4, MW-26, TW4-4, TW4-19, and TW4-20) and the nitrate pumping wells (TWN-2, TW4-22, TW4-
24, and TW4-25). Of the 177 lbs. removed approximately 120 lbs. or 68%, was removed by the nitrate
pumping wells. In the attached Table 3, the DRC shows calculations that verify these reported estimates.
The 4th QR13 reported an estimate of 162 lbs. of nitrate was removed from the chloroform pumping wells
(MW-4, MW-26, TW4-4, TW4-19, and TW4-20) and the nitrate pumping wells (TWN-2, TW4-22, TW4-
24, and TW4-25). Of the 162.3 lbs. removed approximately 138 lbs. or 85%, was removed by the nitrate
pumping wells. In the Attached Table 3, the DRC shows calculations that verify these reported estimates.
The 1st QR14 reported an estimate of approximately 103 lbs. of nitrate was removed from the chloroform
pumping wells (MW-4, MW-26, TW4-4, TW4-19, and TW4-20) and the nitrate pumping wells (TWN-2,
TW4-22, TW4-24, and TW4-25). Ofthe 103 lbs. removed approximately 91 lbs. or 88%, was removed by
the nitrate pumping wells. In the attached Table 3, the DRC shows calculations that verify these reported
estimates.
Reporting
Each Report included the following information as required in the CAP:
a) Introduction
b) Sampling and Monitoring Plan:
i. Description of monitor wells sampled;
ii. Description of sampling methodology, equipment and decontamination
procedures;
iii. Identification of all quality assurance samples, e.g. equipment blanks
duplicate samples, etc.
c) Data Interpretation:
i. Interpretation of groundwater levels, gradients, and flow directions. The interpretation will
include a discussion on: 1) current site groundwater contour map, 2) hydrographs to show
groundwater elevation in each monitor well over time, 3) depth to groundwater measured and
groundwater elevation from each monitor well summarized in data table that includes historic
groundwater level data for each well, 4) calculations documenting quarterly nitrate mass
removed by pumping;
ii. Interpretation of all analytical results for each well including a discussion on: 1) a current
nitrate isoconcentration map, 2) graphs showing nitrate concentration trends in each well
through time and, analytical results for each well summarized in data table that includes
historic analytical results for each well; and
iii. An electronic copy of all laboratory results for groundwater quality monitoring conducted
during the quarter will be provided to the Executive Secretary.
d) Conclusions and Recommendations
e) Copies of EFR field reports, laboratory reports, and chain of custody forms. The nitrate plume is
defined to include any monitoring well that has concentration of nitrate in excess of 10 mg/L.
Page 4
Conclusions on Compliance with the CAP, QAP
Per the DRC review it appears that the "3rd QR13", 4th QR13, and 1st QR14 reports complies with the
CAP and QAP. Therefore, a letter will be drafted for the Director Signature, notifying EFR of the review
and closing-out of these reports.
Page 5
References
Energy Fuels Resources (USA) Inc., June 7, 2012, White Mesa Uranium Mill, Ground Water Monitoring
Quality Assurance Plan (Revision 7.2).
HYDRO GEO CHEM, INC, May 7, 2012, Corrective Action Plan for Nitrate White Mesa Uranium
Mill near Blanding, Utah
Table 1 of 1
Historic Nitrate, Nitrate + Nitrite and Cloride Concentrations
Nitrate Contamination Investigation
White Mesa Uranium Mill Denision Mines Corp.
Monitoring Event TWN-1
Nitrate, Nitrate +
Nitrite (mg/l)
Chloride (mg/l) Monitoring Event
TWN-2 (Pumping well starting in
January 2013)
Nitrate, Nitrate +
Nitrite (mg/l)
Chloride (mg/l)
1st Qtr 3/17/2010
2nd Qtr 5/26/2010
3rd Qtr 9/27/2010
4th Qtr 12/7/2010
1st Qtr 1/26/2011
2nd Qtr 4/20/2011
3rd Qtr 7/26/2011
4th Qtr 10/17/2011
1st Qtr 1/9/2012
2nd Qtr 4/18/2012
3rd Qtr 7/24/2012
4th Qtr 10/17/2012
1st Qtr 2/18/2013
2nd Qtr 4/23/2013
3rd Qtr 8/27/2013
4th Qtr 10/16/2013
1st Qtr 1/14/2014
0.5
0.6
0.6
0.6
0.5
0.5
0.5
0.5
0.6
0.6
0.6
0.43
Nitrate
0.68
0.84
1.24
1.61
1.47
17
20
19
14;
17
19
14
10
. _
17
17
17.5
1st Qtr 3/24/2010
2nd Qtr 6/2/2010
3rd Qtr 9/29/2010
4th Qtr 12/9/2010
1st Qtr 2/1/2011
2nd Qtr 4/28/2011
3rd Qtr 7/28/2011
4th Qtr 10/20/2011
1st Qtr 1/12/2012
2nd Qtr 4/20/2012
3rd Qtr 7/31/2012
4th Qtr 7/17/2012
62.1
"69
69
7 48
Pumping System Started in January 2013
31
48
54
'22.10
17.6
17.4
24.1
26.8
29.2
1st Qtr 2/19/2013
2nd Qtr 4/24/2013
3rd Qtr 8/27/2013
4th Qtr 7/16/2013
1st Qtr 1/13/2014
57.3
57.7
80.0
111
42.6
85
97
104
93
93
85
74
76
86
103
93
79
80.5
82.1
75.9
70.4
72.4
Monitoring Event
TWN-3
Chloride (mg/l) Nitrate, Nitrate +
Nitrite (mg/l)
25.3 111
118
106
117
138
128
134
129
•i 143
152
21 158
12.1 149
Monitoring Event
TWN-4
Nitrate, Nitrate -i
Nitrite (mg/l)
Chloride (mg/l)
1st Qtr 3/25/2010
2nd Qtr 6/3/2010
3rd Qtr 7/16/2010
4th Qtr 12/10/2010
1st Qtr 2/1/2011
2nd Qtr 4/28/2011
3rd Qtr 7/29/2011
4th Qtr 10/20/2011
1st Qtr 1/12/2012
2nd Qtr 4/20/2012
3rd Qtr 7/31/2012
4th Qtr 10/17/2012
1st Qtr 2/19/2013
2nd Qtr 4/24/2013
3rd Qtr 8/28/2013
4th Qtr 10/17/2013
1st Qtr 1/15/2Q14 ""
1st Qtr 3/16/2010 0.9
2nd Qtr 5/27/2010 1.0
3rd Qtr 9/27/2010 0.9
4th Qtr 12/8/2010 1.0
1st Qtr 1/25/2011 0.9
2nd Qtr 4/20/2011 0.9
3rd Qtr 7/26/2011 1.1
4th Qtr 10/18/2011 0.9
1st Qtr 1/9/2012 0.9
2nd Qtr 4/18/2012 1.1
3rd Qtr 7/25/2012 1.4
4th Qtr 7/15/2012 [ 1.45
Nitrate Pumping System Started in January 2013
157 1st Qtr 2/18/2013 f "IS
158 2nd Qtr 4/23/2013 1.63
171 3rd Qtr 8/27/2013 1.6
163 4th Qtr 7/16/2013 1.69
19,6 160 1st Qtr 1/14/2014 L4
22.2
20.9
23.5
22
22
19
21
' 21
21
35
20
20
24
25
26.4
25.3
24.4
27.2
29.4
28.4
Monitoring Event
TWN-5
Nitrate, Nitrate •
Nitrite (mg/l)
Chloride (mg/l) Monitoring Event
TWN-6
Nitrate, Nitrate +
Nitrite (mg/l)
Chloride (mg/l)
1st Qtr 3/16/2010
2nd Qtr 5/26/2010
3rd Qtr 7/12/2010
4th Qtr 12/7/2010
1st Qtr 1/25/2011
2nd Qtr 4/20/2011
3rd Qtr 7/26/2011
4th Qtr10/17/2011
1st Qtr i/9/2012
2nd Qtr 4/18/2012
3rd Qtr 7/24/2012
4th Qtr 10/15/2012
1st Qtr 2013
2nd Qtr 2013
<0.1
NA
NA
0.3
0.3
0.3
0.3
0.4
0.3
0.3
0.3
0.2
0.3
0.3
TWN-5 abandoned on July 31, 2013
43
44
43
45
47
44
44
45
"45
39
48
43.5
1st Qtr 3/23/2010
2nd Qtr 6/1/2010
3rd Qtr 7/13/2010
4th Qtr 12/7/2010
1st Qtr 1/26/2011
2nd Qtr 4/20/2011
3rd Qtr 7/27/2011
4th Qtr 10/18/2011
1st Qtr i/l'O/2012
2nd Qtr 4/18/2012
3rd Qtr 7/25/2012
4th Qtr 7/15/2012
1st Qtr 2013
2nd Qtr 2013
3rd Qtr 2013
4th Qtr 2013
1st Qtr 2013
NA
NA
NA
NA
NA
1.5
1.4
1.4
1.2
1.1
1.5
1.1
1.4
1.2'
1.1
1.4
0.78
Shaded = Nitrate, Nitrate + Nitrite concentrations greater than the Ground Water Quality Standard of 10 mg/l
NA = Per the CAP and SCO, these wells not sampled 2013
Table 1 of 2
Historic Nitrate, Nitrate + Nitrite and Cloride Concentrations
Nitrate Contamination Investigation
White Mesa Uranium Mill Denision Mines Corp.
Monitoring Event
TWN-7
Nitrate, Nitrate +
Nitrite (mg/l)
Chloride (mg/l) Monitoring Event
TWN-8
Nitrate, Nitrate +
Nitrite (mg/l)
Chloride (mg/l)
1st Qtr 3/17/2010
2nd Qtr 5/28/2010
3rd Qtr 7/14/2010
4th Qtr 12/10/2010
1st Qtr 1/27/2011
2nd Qtr4/21/2011
3rd Qtr 7/29/2011
4th Qtr 10/19/2011
1st Qtr 1/11/2012
2nd Qtr 4/20/2012
3rd Qtr 7/26/2012
4th Qtr 10/16/2012
1st Qtr 2/19/2013
2nd Qtr 4/24/2013
3rd Qtr 8/28/2013
4th Qtr 10/16/2013
1st Qtr 1/15/2014
0.8
1.2
1.8
1
£'3
1.7
0.7
2.2
2.3
1.2
0.9
0.64
Nitrate
0.59
1.16
0.835
0.986
0.882
6
6
7
4
6
6
5
6
5
6
6
5.67
1st Qtr 3/16/2010
2nd Qtr 5/26/2010
3rd Qtr 7/12/2010
4th Qtr 12/7/2010
1st Qtr 1/75/7011 "
2nd Qtr 4/19/2011
3rd Qtr 7/26/2011
4th Qtr 10/17/2011
1st Qtr 1/9/2012
2nd Qtr 4/18/2012
3rd Qtr 7/24/2012
4th Qtr 7/15/2012
<0.1
<0.1
<0.1
<0.1
<o'l
<0.1
<0.1
<0.1
<0.1
<0.1
<0.1
<0.1
11
11
11
9
. _.„„
10
18
10
11
15
11
11.4
Pumping System Started in January 2013
5.68
5.88
6.96
5.7
5.75
1st Qtr 2013
2nd Qtr 2013
NA
NA
TWN-8 abandoned on July 31, 2013
Monitoring Event TWN-9
Nitrate, Nitrate +
Nitrite (mg/l)
Chloride (mg/l)
Monitoring Event TWN-10
Nitrate, Nitrate +
Nitrite (mg/l)
Chloride (mg/l)
1st Qtr 3/23/2010
2nd Qtr 6/1/2010
3rd Qtr 7/15/2010
4th Qtr 12/9/2010
1st Qtr 2/1/2011
2nd Qtr 4/28/2011
3rd Qtr 7/29/2011
4th Qtr 10/20/2011
1st Qtr 1/12/2012
2nd Qtr 4/20/2012
3rd Qtr 7/31/2012
4th Qtr 10/17/2012
1st Qtr 2013
2nd Qtr 2013
jf&.
7.6
7.7
10.7
8.0
9.5
10.0
w°
liHI
!'12.5
183
175
210
172
217
192
208
134
202
209
215
194
NA
NA
1st Qtr 3/23/2010
2nd Qtr 6/2/2010
3rd Qtr 7/14/2010
4th Qtr 12/8/2010
1st Qtr 1/26/2011
2nd Qtr 4/21/2011
3rd Qtr 7/27/2011
4th Qtr 10/18/2011
1st Qtr 1/10/2012
2nd Qtr 4/19/2012
3rd Qtr 7/25/2012
4th Qtr 7/16/2012
1st Qtr 2013
2nd Qtr 2013
1.5
1.0
0.2
1.3
0.3
1.2
0.1
0.2
0.8
0.9
0.6
0.12
54
30
21
28
40
28
28
33
44
28
33
30.8
NA
NA
TWN-9 abandoned on July 31, 2013 TWN-10 abandoned on July 31, 2013
Monitoring Event TWN-11
Nitrate, Nitrate + Chloride (mg/l)
Monitoring Event TWN-12
Nitrate, Nitrate + Chloride (mg/l)
1st Qtr 3/17/2010
2nd Qtr 6/1/2010
3rd Qtr 9/27/2010
4th Qtr 12/8/2010
1st Qtr l/27/201l"
2nd Qtr 4/26/2011
3rd Qtr 7/27/2011
4th Qtr 10/17/2011
1st Qtr 1/10/2011
2nd Qtr 4/19/2012
3rd Qtr 7/25/2012
4th Qtr 10/16/2012
1st Qtr 2013 "
2nd Qtr 2013
NA
NA
1.4
1.3
1.4
1.4
l'4
1.4
0.1
1.6
1.6
1.6
18
1.84
73
72
76
72
84
76
76
76
69
71
77
76.4
1st Qtr 3/17/2010
2nd Qtr 5/26/2010
3rd Qtr 7/12/2010
4th Qtr 12/7/2010
1st Qtr 1/26/2011
2nd Qtr 4/26/2011
3rd Qtr 7/26/2011
4th Qtr 10/17/2011
1st Qtr 1/10/2012
2nd Qtr 4/18/2012
3rd Qtr 7/25/2012
4th Qtr 7/16/2012
1st Qtr 2013
2nd Qtr 2013
NA
NA
0.7
0.8
0.7
0.7
4.2
1.0
0.6
1.2
0.9
1.2
1.4
1.41
113
106
112
103
"87
109
102
87
104
106
102
101
TWN-11 abandoned on July 31, 2013 TWN-12 abandoned on July 31, 2013
Shaded = Nitrate, Nitrate + Nitrite concentrations greater than the Ground Water Quality Standard of 10 mg/l
NA = Per the CAP and SCO, these wells not sampled 2013
Table 1 of 3
Historic Nitrate, Nitrate + Nitrite and Cloride Concentrations
Nitrate Contamination Investigation
White Mesa Uranium Mill Denision Mines Corp.
Monitoring Event TWN-13
Nitrate, Nitrate +
Nitrite (mg/l)
Chloride (mg/l)
Monitoring Event TWN-14
Nitrate, Nitrate +
Nitrite (mg/l)
Chloride (mg/l)
1st Qtr 3/17/2010
2nd Qtr 5/26/2010
3rd Qtr 9/27/2010
4th Qtr 12/7/2010
1st Qtr 1/25/2011
2nd Qtr 4/26/2011
3rd Qtr 7/26/2011
4th Qtr 10/17/2011
1st Qtr 1/9/2012
2nd Qtr 4/18/2012
3rd Qtr 7/24/2012
4th Qtr 10/15/2012
1st Qtr 2013
2nd Qtr 2013
<0.1
<0.1
<0.1
<0.1
<0.1
0.1
0.2
0.4
1.6
0.1
0.1
<0.1
NA
NA
47
49
53
57
103
49
49
48
46
53
48
47.3
TWN-13 abandoned on July 31, 2013
1st Qtr 3/24/2010
2nd Qtr 6/2/2010
3rd Qtr 7/15/2010
4th Qtr12/10/2010
1st Qtr 1/28/2011
2nd Qtr 4/27/2011
3rd Qtr 7/29/2011
4th Qtr 10/19/2011
1st Qtr 1/11/2012
2nd Qtr 4/20/2012
3rd Qtr 7/27/2012
4th Qtr 7/17/2012
1st Qtr 2013
2nd Qtr 2013
3rd Qtr 2013
4th Qtr 2013
1st Qtr 2014
2.9
2.9
3.5
4.2
3.7
3.5
3.5
3.9
3.5
3.4
3.7
4.03
24
30
26
28
24
30
25
27
26
27
27
27.4
NA
NA
NA
NA
NA
Monitoring Event TWN-15
Nitrate, Nitrate + Chloride (mg/l)
Monitoring Event TWN-16
Nitrate, Nitrate + Chloride (mg/l)
1st Qtr 3/18/2010
2nd Qtr 5/28/2010
3rd Qtr 7/13/2010
4th Qtr 12/9/2010
1st Qtr 1/27/2011
2nd Qtr 4/27/2011
3rd Qtr 7/28/2011
4th Qtr 10/19/2011
1st Qtr 1/11/2012
2nd Qtr 4/20/2012
3rd Qtr 7/26/2012
4th Qtr 10/17/2012
1st Qtr 2013
2nd Qtr 2013
0.7
1.0
1.0
1.2
1.4
1.6
1.6
1.3
1.5
1.6
2.1
1.79
NA
NA
TWN-15 abandoned on July 31, 2013
1st Qtr 3/17/2010
2nd Qtr 5/27/2010
3rd Qtr 9/27/2010
4th Qtr 12/9/2010
1st Qtr i/27/2011
2nd Qtr 4/27/2011
3rd Qtr 7/27/2011
4th Qtr10/18/2011
1st Qtr 1/10/2012
2nd Qtr 4/19/2012
3rd Qtr 7/25/2012
4th Qtr 7/16/2012
1st Qtr 2013
2nd Qtr 2013
3rd Qtr 2013
4th Qtr 2013
1st Qtr 2014
1.2
1.3
2.6
2
4.6
1.6
2.4
2 6.
2 8
2.0
2.4
2.50
35
35
35
30
' 34
39
31
34
33
50
33
32.1
NA
NA
NA
NA
NA
Monitoring Event TWN-17
Nitrate, Nitrate + Chloride (mg/l)
Monitoring Event TWN-18
Nitrate, Nitrate + Chloride (mg/l)
1st Qtr 3/24/2010
2nd Qtr 6/3/2010
3rd Qtr 7/15/2010
4th Qtr 12/10/2010
1st Qtr 2/1/2011
2nd Qtr 4/28/2011
3rd Qtr7/29/2011
4th Qtr 10/20/2011
1st Qtr 1/12/2012
2nd Qtr 4/20/2012
3rd Qtr 7/27/2012
4th Qtr 10/17/2012
1st Qtr 2013
2nd Qtr 2013
3rd Qtr 2013
10.4'
III
8.9
8.6
9
8.5
8.1
8.7
9.1
9.5
9.65
Nitrate Pumping
NA
NA
NA
TWN-17 abandoned on July 31, 2013
78 1st Qtr 3/17/2010 1.6
87 2nd Qtr 6/1/2010 1.8
66 3rd Qtr 9/27/2010 1.8
65 4th Qtr 12/9/2010 1.6
90 1st Qtr 1/27/2011 1.4
81 2nd Qtr 4/26/2011 1.8
74 3rd Qtr 7/28/2011 1.8
71 4th Qtr 10/18/2011 1.9
79 1st Qtr 1/10/7012 1.9
80 2nd Qtr 4/19/2012 2.1
85 3rd Qtr 7/26/2012 2.3
84.8 4th Qtr 7/16/2012 [ 1.95
System Started in January 2013
"lst Qtr 2/18/2013 [2.27
2nd Qtr 2/23/2013 2.32
3rd Qtr 8/27/2013 2.04
4th Qtr 10/16/2013 2.15
lst Qtr /14/2014 2.33
42
63
64
59
61
67
65
60
"' 64
64
67
67.5
68.7
64.3
70.4
67.3
68.4
Shaded = Nitrate, Nitrate + Nitrite concentrations greater than the Ground Water Quality Standard of 10 mg/l
NA = Per the CAP and SCO, these wells not sampled 2013
Table 1 of 4
Historic Nitrate, Nitrate + Nitrite and Cloride Concentrations
Nitrate Contamination Investigation
White Mesa Uranium Mill Denision Mines Corp.
Monitoring Event TWN-19
Nitrate, Nitrate -
Nitrite (mg/l)
Chloride (mg/l)
Monitoring Event Upper Wildlife Pond (UMLP)
Nitrate, Nitrate +
Nitrite (mg/l)
Chloride (mg/l)
lst Qtr 3/23/2010
2nd Qtr 6/1/2010
3rd Qtr 9/27/2010
4th Qtr12/9/2010
1st Qtr 2/1/2011
2nd Qtr 4/28/2011
3rd Qtr 7/28/2011
4th Qtr 10/18/2011
lst Qtr 1/10/2012
2nd Qtr 4/19/2012
3rd Qtr 7/26/2012
4th Qtr 10/16/2012
lst Qtr 2013
2nd Qtr 2013
3rd Qtr 2013
4th Qtr 2012
lst Qtr 2014
7.2
6.2
7.2
7.0
7.0
6.9
7.1
6.5
7.0
6.8
7.5
7.7
118
113
113
107
114
120
113
108
114
117
117
118
NA
NA
NA
NA
NA
lst Qtr 3/18/2010
2nd Qtr 6/2/2010
3rd Qtr 7/19/2010
4th Qtr 12/10/2010
1st Qtr 1/31/2011
2nd Qtr 4/25/2011
3rd Qtr 7/25/2011
4th Qtr10/19/2011
lst Qtr 1/31/2012
2nd Qtr 2012
3rd Qtr 2012
4th Qtr 2012
1st Qtr'2013'
2nd Qtr 2013
3rd Qtr 2013
4 t h Qt r 2 012
lst Qtr 2014
<0.1
<0.1
<0.1
<0.1
<0.1
<0.1
<0.1
NS
NS
NS
NA
NA
NA
NA
NA
0.1
0.1
<1.0
<1.0
<1.0
<1.0
<1.0
<1.0
NS
NS
NS
Monitoring Event Piezometer 1
Nitrate, Nitrate +
Nitrite (mg/l)
Chloride (mg/l)
Monitoring Event Piezometer 2
Nitrate, Nitrate +
Nitrite (mg/l)
Chloride (mg/l)
lst Qtr 2010
2nd Qtr 6/2/2010
3rd Qtr 7/19/2010
4th Qtr 12/10/2010
istQtr"i'/3i/2011
2nd Qtr 4/25/2011
3rd Qtr 7/25/2011
4th Qtr 10/19/2011
1st Qtr1/11/2012
lst Qtr 1/10/2012
2nd Qtr 4/20/2012
3rd Qtr 7/27/2012
4th Qtr 10/17/2012
lst Qtr 2/19/2013
2nd Qtr 4/24/2013
3rd Qtr 8/28/2013
4th Qtr 10/16/2013
1st Qtr 1/13/2014
NS NS
7.2
6.8
6.5
7
6.8
7
6.6
7.1
7.0
6.6
7.2
7.66
52
52
60
60
58
53
55
78
114
58
56
55
1st Qtr 2010
2nd Qtr 6/2/2010
3rd Qtr 7/19/2010
4th Qtr 12/10/10
lst Qtr 1/31/2011
2nd Qtr 4/25/2011
3rd Qtr 7/25/2011
4th Qtr10/19/2011
1st Qtr 1/11/2012
lst Qtr 1/31/2012
2nd Qtr 4/20/2012
3rd Qtr 7/27/2012
4th Qtr 7/17/2012
NS NS
Nitrate Pumping System Started in January 2013
8.11
8.88
7.83
6.68
6.79
56.7
53.3
55.1
54.1
'56.2
lst Qtr 2/19/2013
2nd Qtr 4/24/2013
3rd Qtr 8/28/2013
4th Qtr 10/16/2013
1st Qtr 1/13/2014
0.6
0.6
0.2
0.3
0.3
0.1
0.1
6.1
0.1
0.2
0.2
0.19
0.22
0.172
0.198
0.36
0.169
8
8
6
9
8
9
8
9
1
8
9
9.5
9.67
10.3
9.66
9.22
11.4
Monitoring Event Piezometer 3
Nitrate. Nitrate + Chloride (mg/l)
Monitoring Event Pond D
Nitrate. Nitrate + Chloride (me/I)
1st Qtr 3/24/2010
2nd Qtr 6/2/2010
3rd Qtr 7/19/2010
4th Qtr 12/9/2010
lst Qtr 1/31/2011
2nd Qtr 4/25/2U11
3rd Qtr 7/25/2011
4th Qtr 10/19/2011
lst Qtr 1/11/2012
2nd Qtr 4/20/2012
3rd Qtr 7/27/2012
4thi Qtr 10/17/2012
1st Qtr 2/24/2013
2nd Qtr 4/24/2013
3rd Qtr 8/28/2013
4thi Qtr10/16/2013
1st Qtr 1/13/2014
1.7
1.6
1.8
1.8
1.8
1./
116
36
35
25
40
ib
61
12
20
53
21
20.1
lst Qtr 2010
2nd Qtr 2010
3rd Qtr 2010
4th Qtr 2010
1st Qtr 1/31/2011
2nd Qtr 2011
3rd Qtr 2011
4th Qtr 2011
lst Qtr 2012
2nd Qtr 2012
3rd Qtr 2012
4th Qtr 2012
NS
NS
NS
NS
0.1
1.8
1.7
1.8
1.7
1.8
2.75,
Nitrate Pumping System Started nVJahuary'2ul3'
"L85
NS
NS
NS
NS
NS
NS
NS
NS
NS
NS
NS
NS
NS
NS
NS
NS
NS
NS
1.83
1.81
1.8
1.7
21
21.2
22.4
23.5
26
lst Qtr 2013
2nd Qtr 2013
3rd Qtr 2013
4th Qtr 2013
1st Qtr 2014
NA
NA
NA
NA
NA
NS = Not sampled
NA = Per the CAP and SCO, these wells not sampled 2013
Table 1 of 5
Historic Nitrate, Nitrate + Nitrite and Cloride Concentrations
Nitrate Contamination Investigation
White Mesa Uranium Mill Denision Mines Corp.
Monitoring Event
Chloride (mg/l) Nitrate, Nitrate +
Nitrite (mg/l)
635
586
29.7 487
at. 45.2 501
5*6 598
TW4-22 (Pumping well starting in
January 2013) Monitoring Event TW4-24 (Pumping well stating in
January 2013)
Chloride (mg/l) Nitrate, Nitrate +
Nitrite (mg/l)
3S.9 596
23 / 916
32 h 998
34.6 1,030
809
lst Qtr 2/11/2013
2nd Qtr 6/5/2013
3rd Qtr 9/3/2013
4th Qtr 10/29/2013
1st Qtr 1/27/2614
lst Qtr 2/11/2013
2nd Qtr 6/5/2013
3rd Qtr 9/3/2013
4th Qtr 10/3/2013
lst Qtr 1/27/2014
Monitoring Event TW4-25 (Pumping well starting in
January 2013)
Nitrate, Nitrate -
Nitrite (mg/l)
lst Qtr 2/11/2013
2nd Qtr 6/5/2013
3rd Qtr 9/3/2013
4 th Qtr 10/29/2013
1st Qtr 1/27/2014
9
5.24
5.69
6.1
2.16
Chloride (mg/l)
190
136
119
88.6
85.7
Shaded = Nitrate, Nitrate + Nitrite concentrations greater than the Ground Water Quality Standard of 10 mg/l
Table 2
Summary of QA/QC Duplicate Sample
3rd Quarter 2013
Parameter GWQS Duplicate of TWN-4
TWN-4 TWN-65 RPD
Nitrate + Nitrite (as N) 10 mg/L
Chloride none
1.58
~27.2
1.57 0.6
29 -6.4
4th Quarter 2013
Parameter GWQS Duplicate of TWN-1
TWN-4 TWN-65 RPD
Nitrate + Nitrite (as N)
Chloride
10 mg/L
none
1.61 1.48 8.4
28.6 27.1 5.4
1st Quarter 2014
Parameter GWQS Duplicate of TWN-4
TWN-4 TWN-65 RPD
Nitrate + Nitrite (as N)
Chloride
10 mg/L
none
1.41
28.4
1.33
264
5^8
"7.3
Tabel 3
DRC Nitrate Mass Removal Calculations
Energy Fuels Resorses Inc. White Mesa Mill, Bland, Utah
3rd Quarter 2013
Data Discriptions
MW4
Chloroform Pumping
MW-26 TW4-4
Wells Nitrate Pumping Wells
TW4-19 TW4-20 TWN-2 TW4-22 TW4-24 TW4-25
Nitrate (mg/L)
Nitrate (g/L)
Nitrate (Ibs/L)
Nitrate (lbs/gal)
Total gallons pumped
lbs of nitrate removed
Gallons of nitrate removed
4.9
4.90E-03
1.08E-05
4.10E-05
69,834
2 9
0.23
20
1 98E-03
4.37E-06
1.66E-05
25,763
0.4
0 03
72
7.22E-03
1.60E-05
6.04E-05
63,515
3.8
0 31
17.6
1 76E-02
3.89E-05
1 47E-04
329,460
48 5
3.95
8.7
8 70E-03
1 92E-05
7.28E-05
19,731
1.4
0 12
80 0
8.00E-02
1.77E-04
6 69E-04
50,037
33 5
2.72
29 7
2 97E-02
6.56E-05
2.48E-04
25,593
6.4
0.52
32 6
3.26E-02
7 20E-05
2 73E-04
267,704
73 0
5.94
5.7
5.70E-03
1.26E-05
4.77E-05
145,841
70
0 57
Total lbs of nitrate removed from chloroform pumping wells
Total gallons of nitrate removed chloroform pumping wells
57.1
4.6
Total lbs of nitrate removed from nitrate pumping wells
Total gallons of nitrate removed nitrate pumping wells
119.8
97
Total lbs nitrate removed from all pumping wells
Total gallons of nitrate removed from all pumping wells
% lbs of nitrate removed by nitrate pumping wells
176.8
14.4
67.7
4th Quarter 2013
Data Discriptions Chloroform Pumping
MW4 MW-26 TW4-4
Wells
TW4-19 TW4-20
Nitrate Pumping Wells
TWN-2 TW4-22 TW4-24 TW4-25
Nitrate (mg/L)
Nitrate (g/L)
Nitrate (Ibs/L)
Nitrate (lbs/gal)
Total gallons pumped
lbs of nitrate removed
Gallons of nitrate removed
5.3
5 30E-03
1 17E-05
4 43E-05
70,340
3 1
0 25
1 4
1 40E-03
3 09E-06
1 17E-05
24,208
0 3
0 02
7 8
7 80E-03
1.72E-05
6.52E-05
60,234
3.9
0 32
4 7
4 70E-03
1 04E-05
3.93E-05
403,974
15.9
1 29
96
9 64E-03
2 13E-05
8 06E-05
19,280
1.6
0 13
111 0
1.11E-01
2.45E-04
9 28E-04
49,980
46 4
3.78
45.2
4 52E-02
9.99E-05
3.78E-04
24,952
94
0.77
34 6
3.46E-02
7.64E-05
2.89E-04
260,555
75 4
6 13
6.0
6.00E-03
1.33E-05
5.02E-05
126,577
64
0.52
Total lbs of nitrate removed from chloroform pumping wells
Total gallons of nitrate removed chloroform pumping wells
24.8
2.0
Total lbs of nitrate removed from nitrate pumping wells
Total gallons of nitrate removed nitrate pumping wells
137.6
11 2
Total lbs nitrate removed from all pumping wells
Total gallons of nitrate removed from all pumping wells
% lbs of nitrate removed by nitrate pumping wells
162.3
13.2
84.7
0.1 0 1 75 2
1st Quarter 2014
Data Discriptions Chloroform Pumping Wells
MW4 MW-26 TW4-4 TW4-19 TW4-20 TWN-2
Nitrate Pumping Wells
TW4-22 TW4-24 TW4-25
Nitrate (mg/L)
Nitrate (g/L)
Nitrate (Ibs/L)
Nitrate (lbs/gal)
Total gallons pumped
lbs of nitrate removed
Gallons of nitrate removed
4 7
4.70E-03
1.04E-05
3.93E-05
69,834
2 7
0 22
0 5
5.49E-04
1.21 E-06
4.59E-06
23,263
0.1
0 01
73
7 28E-03
1 61 E-05
6 09E-05
58,993
36
0 29
1 6
1 62E-03
3 58E-06
1 35E-05
304,851
4 1
0 34
7 6
7.56E-03
1.67E-05
6.32E-05
18,782
1.2
0 10
42 6
4 26E-02
9 41 E-05
3.56E-04
48,320
17 2
1.40
54 6
5 46E-02
1 21 E-04
4 57E-04
24,532
11.2
0.91
31.6
3.16E-02
6 98E-05
2.64E-04
229,064
60 5
4 93
2.2
2.16E-03
4 77E-06
1 81 E-05
129,979
2.3
0 19
Total lbs of nitrate removed from chloroform pumping wells
Total gallons of nitrate removed chloroform pumping wells
11.8
1.0
Total lbs of nitrate removed from nitrate pumping wells
Total gallons of nitrate removed nitrate pumping wells
91.3
7.4
Total lbs nitrate removed from all pumping wells
Total gallons of nitrate removed from all pumping wells
% lbs of nitrate removed by nitrate pumping wells
103.1
8.4
88.6