DRC-2024-007692

DRC-20 195 North 1950 West • Salt Lake City, UT
Mailing Address: P.O. Box 144880 • Salt Lake City, UT 84114-4880
Telephone [phone] • Fax [phone] • T.D.D. [phone]
www.deq.utah.gov
Printed on 100% recycled paper
State of Utah
SPENCER J. COX
Governor

DEIDRE HENDERSON
Lieutenant Governor
Department of
Environmental Quality

Kimberly D. Shelley
Executive Director

DIVISION OF WASTE MANAGEMENT
AND RADIATION CONTROL

Douglas J. Hansen
Director
M E M O R A N D U M
TO: File
THROUGH: Adam Wingate
Chris Leahy
FROM: Dean Henderson
DATE: November 19, 2024
SUBJECT: Field Inspection and Split Sampling for the 4th Quarter 2024 Chloroform Groundwater
Monitoring Event for Energy Fuels Resources (USA), Inc.
White Mesa Uranium Mill, near Blanding, Utah
This is a Utah Division of Waste Management and Radiation Control (Division) staff summary on the
field inspection and split sampling of the 4th Quarter 2024 chloroform groundwater monitoring event
(Monitoring Event) performed on November 5 and 6, 2024, for the Energy Fuels Resources (USA), Inc.
(EFRI) White Mesa Uranium Mill, near Blanding, Utah. EFRI is required to submit a written
groundwater monitoring report for this monitoring event by March 1, 2025. The monitoring event was
inspected against the following enforcement documents:
The EFRI Quality Assurance Plan (QAP) dated February 15, 2022 (Revision. 7.7).
Summary of Inspection
On November 5 and 6, 2024, Division staff Dean Henderson, Adam Wingate and Chris Leahy observed
the EFRI staff perform groundwater monitoring activities including the collection of ground water
samples from monitor wells for the chloroform groundwater monitoring network. In addition, the
Division staff collected a split sample from monitor wells TW4-12, TW4-13, TW4-14, TW4-28, TW4-
31, TW4-36, and TW4-43. A duplicate sample was collected at well TW4-12 and is identified as TW4-
52. See the photographs of sampling activities in figures 1 and 2 in Attachment 1 below.

After the inspection and split sampling was completed, a close out meeting was held with the following
attendees: Division staff Dean Henderson, Adam Wingate, Chris Leahy and EFRI staff Tanner Holliday,
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Garrin Palmer, and Deen Lyman. In the meeting the Division staff told the EFRI staff that they
appeared to follow the QAP.

Conclusion

Based on Division staff observations of EFRI staff performing the sampling and monitoring on
November 5 and 6, 2024, it appears that EFRI appropriately followed the field requirements in the QAP.
As stated above, EFRI is required to submit a written report of this Monitoring Event on March 1, 2025.
The Division will also review this report and will include split sample analysis for this monitoring event
as part of that review to complete the inspection of the 4th Quarter 2024 chloroform groundwater
monitoring event.

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References

Groundwater Discharge Permit No. UGW370004 (Permit). Permit version that was signed on
March 8, 2021.

EFRI Quality Assurance Plan (QAP) dated February 15, 2022 (Revision. 7.7).

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Attachment 1

Photographs of Sampling Activities

Page 5
Figure 1. EFRI staff Calibrating the pH, turbidity, conductivity, and disolved oxigen meter.
Figure 2. Purging groundwater at monitor well TW4-32.