DRC-2019-002835 - 0901a068809fc4af

Energy Fuels Resources (USA) Inc.
225 Union Blvd. Suite 600
Lakewood, CO, US, 80228
303 974 2140
www.energyfuels.com
VIA EMAIL AND OVERNIGHT DELIVERY
March 20, 2019
Mr. Bryce C. Bird
Division Director
Utah Department of Environmental Quality
Air Quality Division
195 North 1950 West
Salt Lake City, Utah 84116
DRC-ZO Iûo2835
Div of Waste Management
and Radiation Control
MAR 2 6 2019
Re: Energy Fuels Resources (USA) Inc. Cancellation Notice for NESHAPs Radon Flux
Measurements for Tailings Impoundment 3 at the White Mesa Mill
Dear Mr. Bird:
On February 12, 2019, Energy Fuels Resources (USA) Inc. ("EFRI") submitted a 30-day notice regarding
plans to perform a sampling event for NESHAPs Radon Flux measurements for the first quarter of 2019
at Tailings Impoundment 3 at the White Mesa Mill from March 18 - 21, 2019. On March 6, 2019 EFRI
rescheduled the sampling event to March 25 — 28, 2019 due to inclement weather.
This letter serves as the cancellation notice for the Tailings Impoundment 3 sampling rescheduled for
March 25 — 28, 2019. Due to the continuation of inclement weather and the resultant standing water and
mud EFRI cannot complete the sampling event in the first quarter of 2019.
As stated in the previous letters, per 40 CFR 61.253, EFRI is permitted to monitor Radon Flux one or
more times per year. In both the February 12, and March 6, 2019 letters EFRI stated that Tailings
Impoundment 3 would be sampled on a quarterly frequency in 2019. However, since the first quarter
sampling has been cancelled due to weather conditions beyond our control, EFRI will change the planned
2019 sampling frequency on Tailings Impoundment 3 to three times in 2019, with one sampling event in
each 4-month period in 2019 (January — April, May through August, and September through December).
EFRI will provide notice upon rescheduling of the Tailings Impoundment 3 event.
If you have any questions or require assistance, please contact me at 303-389-4134; or Mr. Terry Slade,
Radiation Safety Officer, at 435-678-4128.
Yours very truly,
ENERGY FUELS RESOURCES (USA) INC.
Kathy W inel
Quality Assurance Manager
cc: Phil Goble, Utah Division Waste Management and Radiation Control
Director, Air and Toxics Technical Enforcement Program, U.S. Environmental Protection Agency
D. Frydenlund, L. Shumway, T. Slade, S. Bakken, P. Goranson (EFRI)