DRC-2024-004812

e,E�ERGYFUELS D v of Waste Mc:nagerieritand Rad1c.tio,1 Cor-trol
MAR O 5 2024
VIA EMAIL AND EXPEDITED DELIVERY
February 29, 2024
Mr. Bryce C. Bird
Division Director
Utah Department of Environmental Quality
Air Quality Division
195 North 1950 West
Salt Lake City, Utah 84116 Energy Fuels Resources (USA) Inc. 225 Union Blvd. Suite 600 Lakewood, CO, US, 80228 303 974 2140 www.enern.yfuels.com Re: Energy Fuels Resources (USA) Inc. Notification of NESHAPs Radon Flux Measurements for
Tailings Impoundment 3 at the White Mesa Mill
Dear Mr. Bird:
Energy Fuels Resources (USA) Inc. ("EFRI") plans to perform a sampling event for ESHAPs Radon
Flux measurements for the first half of 2024 at Tailings lmpoundment 3 at th e White Mesa Mill from
April 9, 2024 through April 12, 2024. Per 40 CFR 61.253, EFRI is permitted to monitor Radon Flux one
or more times per year. EFRI will sample Tailings Impoundment 3 on a semi-annual frequency in 2024.
Tellco Environmental of Grand Junction, Colorado ("Tellco") will perform approximately 100
measurements on the beach and cover area of Tailings Impoundrnent 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 115. 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
12, 2024.
EFRI will provide safety and radiological orientation for any Utah Depa1tment of Air Quality personnel
observing this event. This orientation will be required before any individual enters the Mill Restricted
Area. Individuals monitoring this event should bring their own mandatory Personnel Protective
Equipment as required at the Mill, specifically, safety 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 435-678-4114.
Yours very trnly,
f(�)v� ENERGY FUELS RESOURCES (USA) INC.
Kathy Weinel
Director, Regulatory Compliance 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)DRC-2024-004812