DAQ-2025-001279

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February 25,2025 [,riri,,l
Mr. Bryce C. Bird C,r,ti;,
Division Director
Utah Department of Environmental Quallt'1i ri
Air Quality Division
195 North 1950 West
Salt Lake Ciry, Utah 841 l6
Re: Energy Fuels Resources (USA) Inc. Notification
Tailings Impoundment 3 at the White Mesa Mill
Dear Mr. Bird:
Energy Fuels Resources (USA) Inc. ("EFRI") plans to perform a sampling event for NESHAPs Radon
Flux measurements for the first half of 2025 at Tailings Impoundment 3 at the White Mesa Mill from
April I ,2025 through April 3, 2025. Per 40 CFR 6l .253, EFRI is permitted to monitor Radon Flux one or
more times per year. EFRI will sample Tailings Impoundment 3 on a semi-annual frequency in2025.
Tellco Environmental of Grand Junction, Colorado ("Tellco") will perform approximately 100
measurements on the beach and cover area of Tailings Impoundment 3 during the sampling event. These
measurements will be performed in accordance with methods and procedures set forth in 40 CFR Part 61,
Appendix B, Method I15. Provided that there are no rainouts or events that require remobilization or a
delay in measurement, the sampling event for Tailings Impoundment 3 is expected to conclude on April
3.2025.
EFRI will provide safety and radiological orientation for any Utah Department of Air Quality personnel
observing this event. This orientation will be required before any individual enters the Mill Restricted
Area. lndividuals monitoring this event should bring their own mandatory Personnel Protective
Equipment as required at the Mill, specifically, safefy glasses, hardhats, and steel-toed shoes.
If you have any questions or require assistance, please contact me at 303-389-4134' or Mr. Garrin Palmer,
at 435-678-41 14.
Yours very truly,
/*1./ il.l 4^4
ENERGY FUELS RESOURCES (USA) INC.
Kathy Weinel
Director, Regulatory Compl iance
cc: Adam Wingate, Ryan Johnson Utah Division Waste Management and Radiation Control
Director, Air and Toxics Technical Enforcement Program, U.S. Environmental Protection Agency
D. Frydenlund, L. Shumway, S. Bakken, G. Palmer, J. App (EFRI)
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ENVIHONMENlAL OUALITY
DIVISION OF AIR OUALITY
of NESHAPs Radon Flux Measurements for
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