DRC-2023-001874 - 0901a0688119adf1

VIA EMAIL AND OVERNIGHT DELIVERY
February 23, 2023
Mr. Doug Hansen
Director
Division of Waste Management and Radiation Control
Utah Department of Environmental Quality
195 North 1950 West
Salt Lake City, UT 84114-4820
Energy Fuels Resources (USA) Inc. 225 Union Blvd. Suite 600 Lakewood, CO, US, 80228
303 974 2140 www.energyfuels.com
Re: Energy Fuels Resources (USA) Inc. Sampling Notice for the Radon Flux Measurements for Tailings Impoundment 2 at the White Mesa Mill
Dear Mr. Hansen:
Pursuant to the letter from the Utah Division of Waste Management and Radiation Control ("DWMRC") dated, July 23, 2014, Energy Fuels Resources (USA) Inc. ("EFRI") is required to measure radon flux at Tailings Impoundment 2 ("Cell 2") at the White Mesa Mill (the "Mill") semi-annually in accordance with 40 CFR 61, Appendix B, Method 115. EFRI is providing 30-day notice to DWMRC that the semi-annual sampling event for the first half of 2023 for Cell 2 will be conducted at the Mill from April 4 -6, 2023.
The measured results will be included in the January through June 2023 Semi-Annual Effluent Report, due September 1, 2023.
Tellco Environmental of Grand Junction, Colorado will perform approximately 100 measurements on the cover area of Cell 2 during the sampling event. Provided that there are no rainouts or events that require
remobilization or a delay in measurement, the sampling event is expected to conclude on April 6, 2023.
EFRI will provide safety and radiological orientation for any DWMRC 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 truly,
ENERGY FUELS RESOURCES (USA) INC. Kathy Weinel
Director, Regulatory Compliance
cc: D.Frydenlund, L. Shumway, S. Bakken, G. Palmer, J. App (EFRI)
DRC-2023-001874