DRC-2023-074876 - 0901a068812a6892

October 25, 2023
Div of Waste Management
and Radiation Control
OCT 2 7 2023
VIA PDF AND FEDERAL EXPRESS
Doug Hansen
Director
Division of Waste Management and Radiation Control
State of Utah Department of Environmental Quality
195 North 1950 West
Salt Lake City, UT 84116
Energy Fuels Resources (USA) Inc.
225 Union Blvd. Suite 600
Lakewood, CO, US, 80228
303 974 2140
www.energyfuels.com
Re: State of Utah Ground Water Discharge Permit No. UGW370004
White Mesa Uranium Mill -Removal of Certain Groundwater Monitoring Parameters
from Accelerated Monitoring Status
Dear Mr. Hansen:
A number of groundwater monitoring constituents have been placed on accelerated monitoring status
under Part l.G.1 of the Energy Fuels Resources (USA) Inc. ("EFRI") Ground Water Discharge Permit No.
UGW3 70004 ("GWDP"). Part I.G.1 provides that such accelerated monitoring shall continue until
compliance status of the facility can be determined by the Director.
Based on the accelerated monitoring results to date, EFRI requests the Division of Waste Management
and Radiation Control ("DWMRC") make a determination that accelerated monitoring cease at this time
for field pH in MW-30 for the reasons stated below:
• MW-30 field pH results have been within the Groundwater Compliance Limit ("GWCL")
specified in the GWDP for ten consecutive sampling events since December 2022. Per the
UDEQ, eight consecutive sample results below the GWCL are needed for the discontinuance of
accelerated monitoring.
Once removed from accelerated monitoring status, these constituents, like all other constituents, would be
subject to future accelerated monitoring under Part I.G.1 of the GWDP, should circumstances warrant.
Field pH measurements will continue to be recorded for all samples collected, including any accelerated
monitoring completed for other constituents as required. Upon DWMRC approval of this request, field
pH measurements will no longer be tracked and reported as part of the quarterly Exceedance Notice, but
will return to the routine reporting in the Quarterly Groundwater Monitoring Reports.
To assist in your evaluation of the foregoing, we have included a summary of the accelerated sampling
results since the initial sample result that triggered accelerated monitoring in Table 1.
The analytical laboratory reports for the foregoing results up to and including June 2023 are included in
the Quarterly Groundwater Monitoring Reports, all of which have been provided to DWMRC. Copies of
the field sheets for the results for July 2023 through September 2023 will be provided in the upcoming
3rd Quarter 2023 Groundwater Monitoring Report and are also included with this letter for your
DRC-2023-074876
Letter to Doug Hansen
Removal of Parameters from Accelerated Monitoring
October 25, 2023
Page 2
convenience. It is important to note that the 3rd Quarter 2023 monitoring results included with this letter
have been evaluated per the DWMRC approved QAP and the GWDP and all field and laboratory quality
control parameters are acceptable. The evaluations of the 3rd Quarter data will be included in the 3rd
Quarter 2023 Groundwater Monitoring Report, due December 1, 2023.
If you have any questions or require any further infonnation, please contact the undersigned.
Yours truly,
~ )v~
K~einel
Director, Regulatory Compliance
cc: David Frydenlund
Logan Shumway
Garrin Palmer
Tanner Holliday
Scott Bakken
Jordan App
Analytical Results and Field Sampling Sheets for the Wells that are the Subject of
this Request
Table 1
MW-30 Field pH (S.U.) 6.47 -8.5 November 2022* 6.37
December 2022 6.59
Ql 2023 7.01
Februa 2023 6.77
March 2023 7.15
Q2 2023 6.94
Ma 2023 6.96
June 2023 7.13
2 2023 6.89
7.16
6.93
*Last sample result outside of GWCL limits.
Groundwater Discharge Permit ,~
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Groundwater Monitoring Quality Assurance Plan
White Mesa Mill
Field Data Worksheet For Groundwater
Location ID MW-30 Sampling Program Sampling Program
Field Sample ID MW-30 07112023 Sampling Event Sampling Event 2023 Q3 GW 2023 Q3 GW
Purge Date & Time 7/11/2023 12:00
Sample Date & Time 7/11/2023 15:30 !sampler [sampler I TH/DL TH/DL I
Purging Equipment Pump Weather Conditions Sunny
Pump Type QED External Ambient Temperature (C) 33
Purging Method 2 Casings Previous Well Sampled MW-40
Casing Volume (gal) 22.60
Calculated Casing Volumes Purge Duration (min) 208.35
pH Buffer 7.0 7.0 Well Depth (ft) 110.00
pH Buffer 4.0 4.0 Well Casing Diameter (in) 4
Specific Conductance (micromhos) 1000 Depth to Water Before Purging (ft) 75.38
Conductivity Dissolved
Date/Time Gallons Purged (gal) (umhos/cm) pH (pH Units) Temp (deg C) Redox (mV) Turbidity (NTU) Oxygen(%) Before/After
7/11/2023 15:27 44.91 2208 6.92 15.60 271 0 54.0
7/11/2023 15:28 45.13 2211 6.90 15.55 272 0 54.0
7/11/2023 15:29 45.35 2213 6.89 15.56 274 0 54.5
7/11/2023 15:30 45.57 2214 6.89 15.57 276 0 54.4
Pumping Rate Calculations
[volume of water purged (gals) 45.57 Flow Rate (Q = S/60) (gal/min) .217
Time to evacuate 2 Casing Volumes (min) 210.00
[Final Depth to Water (feet) 78.77 Number of casing Volumes 2.00
Volume, if well evacuated to dryness () 0
Name of Certified Analytical Laboratory
AWSL
Analytical Samples Information
Sample Container Preservative
Type of Sample/Analysis Collected? Matrix Number Type Sample Filtered? Type Added?
Total Dissolved Soilds y WATER 1 250-ml HDPE u 4 Deg C y
Heavy Metals -Full Suite y WATER 1 250-ml HDPE y HNO3 (pH<2) y
voes -Full Suite for GW y WATER 3 40ml VOA u HCI (pH<2), 4 Deg C y
Nutrients y WATER 1 250-ml HDPE u H2SO4 (pH<2), 4 Deg C y
General lnorganics y WATER 1 250-ml HOPE u 4 Deg C y
Gross Alpha y WATER 1 250-ml HDPE y HNO3 y
Comments:
[ Arrived on site at 1155. Purge began at 1200. Purged well for a total of 210 minutes. Purge ended and samples collected at 1530. Water was clear. Left site at 1539.
Signature of Field Technician
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Groundwater Discharge Permit
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Groundwater Monitoring Quality Assurance Plan
White Mesa Mill
Field Data Worksheet For Groundwater
Location ID MW-30 Sampling Program
Field Sample ID MW-30_08022023 Sampling Event August Monthly
Purge Date & Time 8/2/2023 6:45
Sample Date & Time 8/2/2023 10:15 [sampler TH/DL
Purging Equipment Pump Weather Conditions Sunny
Pump Type QED External Ambient Temperature (C) 17
Purging Method 2 Casings Previous Well Sampled MW-31
Casing Volume (gal) 22.56
Calculated Casing Volumes Purge Duration (min) 207.93
pH Buffer 7.0 7.0 Well Depth (ft) 110.00
pH Buffer 4.0 4.0 Well Casing Diameter (in) 4
Specific Conductance (micromhos) 1000 Depth to Water Before Purging (ft) 75.45
Conductivity Dissolved
Date/Time Gallons Purged (gal) (um hos/cm) pH (pH Units) Temp (deg C) Redox (mV) Turbidity (NTU) Oxygen(%) Before/After
8/2/2023 10:12 44.91 2220 7.19 15.40 213 5.0 53.0
8/2/2023 10:13 45.13 2217 7.18 15.10 220 4.0 53.0
8/2/2023 10:14 45.35 2215 7.17 15.08 225 3.9 52.8
8/2/2023 10:15 45.57 2222 7.16 15.08 229 3.8 53.1
Pumping Rate Calculations
[volume of water purged (gals) 45.57 Flow Rate (Q = S/60) (gal/min) .217
Time to evacuate 2 Casing Volumes (min) 210.00
[Final Depth to Water (feet) 77.35 Number of casing Volumes 2.00
Volume, if well evacuated to dryness () 0
Name of Certified Analytical Laboratory
AWSL
Analytical Samples Information
Sample Container Preservative
Type of Sample/Analysis Collected? Matrix Number Type Sample Filtered? Type Added?
Chloride y WATER 1 500-ml Poly u None N
Nitrate/nitrite as N y WATER 1 250-ml HOPE u H2SO4 (pH <2), 4 Deg C y
Heavy Metals -U and Se only y WATER 1 250-ml HOPE y HNO3 (pH<2) y
Comments:
[ Arrived on site at 0640. Purge began at 0645. Purged well for a total of 210 minutes. Purge ended and samples collected at 1015. Water was clear. Left site at 1021 .
Signature of Field Technician
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Groundwater Discharge Permit
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Groundwater Monitoring Quality Assurance Plan
White Mesa Mill
Field Data Worksheet For Groundwater
Location ID MW-30 Sampling Program
Field Sample ID MW-30 09052023 Sampling Event September Monthly
Purge Date & Time 9/5/2023 10:10
Sample Date & Time 9/5/2023 13:40 [sampler TH/DL
Purging Equipment Pump Weather Conditions Sunny
Pump Type QED External Ambient Temperature (C) 21
Purging Method 2 Casings Previous Well Sampled MW-11
Casing Volume (gal) 22.61
Calculated Casing Volumes Purge Duration (min) 208.41
pH Buffer 7.0 7.0 Well Depth (ft) 110.00
pH Buffer 4.0 4.0 Well Casing Diameter (in) 4
Specific Conductance (micromhos) 1000 Depth to Water Before Purging (ft) 75.37
Conductivity Dissolved
Date/Time Gallons Purged (gal) (um hos/cm) pH (pH Units) Temp (deg C) Redox (mV) Turbidity (NTU) Oxygen(%) Before/After
9/5/2023 13:37 44.91 2210 6.94 15.15 337 0 53.6
9/5/2023 13:38 45.13 2211 6.93 15.10 337 0 54.0
9/5/2023 13:39 45.35 2214 6.93 15.05 337 0 53.7
9/5/2023 13:40 45.57 2217 6.93 15.01 337 0 53.2
Pumping Rate Calculations
[volume of water purged (gals) 45.57 Flow Rate (Q = S/60) (gal/min) .217
Time to evacuate 2 Casing Volumes (min) 210.00
[ Final Depth to Water (feet) 77.93 Number of casing Volumes 2.00
Volume, if well evacuated to dryness () 0
Name of Certified Analytical Laboratory
AWSL
Analytical Samples Information
Sample Container Preservative
Type of Sample/Analysis Collected? Matrix Number Type Sample Filtered? Type Added?
Chloride y WATER 1 500-ml Poly u None N
Nitrate/nitrite as N y WATER 1 250-ml HOPE u H2SO4 (pH<2), 4 Deg C y
Heavy Metals -U and Se only y WATER 1 250-ml HOPE y HNO3 (pH<2) y
Comments:
[ Arrived on site at 1007. Purge began at 1010. Purged well for a total of 210 minutes. Purge ended and samples collected at 1340. Water was clear. Left site at 1347.
Signature of Field Technician
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