DRC-2025-001864

June 12, 2025Kathy Weinel, Director of Regulatory ComplianceEnergy Fuels Resources (USA), Inc.225 Union Blvd., Suite 600Lakewood, Co 80228
RE:Abandonment of Pumping Well TW4-19 and Installation of New Pumping Well TW4-19AGroundwater Discharge Permit UGW370004Project Number 479-2025-025
Dear Ms. Weinel:
In a letter dated June 10, 2025, Energy Fuels Resources (USA), Inc. (EFRI) provided the Division Waste Management and Radiation Control (Division) written Notice concerning the pumping
failure at pumping well TW4-19 (DRC-2025-001849). The Notice explained how EFRI staff discovered silica sand filler pack material in the pump(s), flow meter, and discharge lines associated
with TW4-19. Well logs indicate the well was completed at a depth of 125 feet below ground surface (bgs). Upon further inspection, EFRI staff found that the bottom of the well was now
115 feet bgs, indicating the bottom 10 feet of the well was filled with silicate sand. This would seem to indicate that the well screen collapsed between 115 and 125 feet bgs and that
TW4-19 can no longer be used as a pumping well. The Division agrees with this assessment.
Because TW4-19 is no longer serviceable, the Notice requested toabandon TW4-19 and install a new pumping well identified as TW4-19A. Again, the Division concurs and approves the abandonmentof
TW4-19 and installation of a new pumping well.
Before beginning the abandonment of TW4-19 and installation of TW4-19A, please submita plan for Division approval containing the following:
Well abandonment in accordance with Utah Administrative Rule R655-4-14
New well location
All applicable requirements from the Groundwater Corrective Action Plan for Chloroform Part II.C and H.
If you have any questions, please contact Dean Henderson at [phone] or [e-mail]
Sincerely,
Adam Wingate, Uranium Recovery Section Manager
Division of Waste Management and Radiation Control
AW/DCH/wa
c:Dennis Shumway, San Juan Public Health Department
Mike Moulton, San Juan Public Health Department
Curtis Page, P.E., District Engineer, UDEQ
Kathy Weinel, Director of Regulatory Compliance, Energy Fuels Resources (USA) Inc.
(Email and Hard Copy) [e-mail]