DRC-2024-004046

DRC-2024-004046 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. 711 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 January 23, 2024
Kathy Weinel, Quality Assurance Manager Energy Fuels Resources (USA), Inc. 225 Union Blvd., Suite 600
Lakewood, CO 80228 RE: November 7, 2023, White Mesa Mill 2023 Annual Tailings System Wastewater Sampling Report Closeout Letter Groundwater Quality Discharge Permit Number UGW370004
Dear Ms. Weinel: The Division of Waste Management and Radiation Control (Division) has completed the review of the
2023 Annual Tailings System Wastewater Sampling Report dated November 7, 2023 (Report). The review was based on compliance with the following: 1. White Mesa Uranium Mill Groundwater Quality Assurance Plan (QAP). Revision 7.5,
dated June 5, 2019. 2. Groundwater Discharge Permit No. UGW370004 (Permit). Permit version that was signed on March 19, 2019. 3. Tailings and slimes Drain Sampling Program (Plan) Revision 3.0, dated July 8, 2018.
The Division review concluded that the Report appeared to be in compliance with the QAP, Permit, and Plan. This letter constitutes a closeout of the November 7, 2023, Annual Tailings Systems Wastewater Sampling Report.
If you have any questions, please contact Dean Henderson at 385-499-4443. Sincerely,
Phil Goble, Uranium Mills and Radioactive Materials Manager Division of Waste Management and Radiation Control (Over)

PRG/DCH/jk c: Grant Sunada, Health Director, San Juan Public Health Department
Ronnie Nieves, Environmental Health Director, San Juan Public Health Department Russell Seeley, District Engineer, UDEQ