DRC-2019-002414 - 0901a068809e7476

Energy Fuels Resources (USA) Inc.
225 Union Blvd. Suite 600
Lakewood, CO, US, 80228
303 974 2140
www.energyfuels.com
Div of Waste Management
and Radiation Control
MAR 1 2 2019
7PC-20/9-6024/2/'
VIA EMAIL AND OVERNIGHT DELIVERY
March 6, 2019
Mr. Phil Goble
Uranium Mills and Radioactive Materials Section Manager
Division of Waste Management and Radiation Control
Utah Department of Environmental Quality
195 North 1950 West
P.O. Box 144880
Salt Lake City, UT 84114-4820
Re: Energy Fuels Resources (USA) Inc. Notification of Rescheduling of the Radon Flux
Measurements for Tailings Impoundment 2 at the White Mesa Mill
Dear Mr. Goble:
On February 12, 2019, Energy Fuels Resources (USA) Inc. ("EFRI") submitted a 30-day notice
regarding a radon flux sampling event for Tailings Impoundment 2 ("Cell 2") at the White Mesa
Mill (the "Mill") that was scheduled to be conducted from March 18 - 21, 2019. However, due the
inclement weather at the Mill, EFRI is rescheduling the sampling event. This letter serves as
notification that the semi-annual sampling event first half of 2019 for Cell 2 Radon Flux is being
rescheduled from March 18 - 21, 2019 to March 25 — 28, 2019.
As noted in the February 12, 2019 submittal, pursuant to the letter from the Utah Division of
Waste Management and Radiation Control ("DWMRC") dated, July 23, 2014, 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. The measured results
will be included in the January through June 2019 Semi-Annual Effluent Report, due September
1, 2019.
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 March 28, 2019.
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. Terry
Slade at 435-678-4128.
Yours very truly,
ENERGY FUELS RESOURCES (USA) INC.
Kathy Weinel
Quality Assurance Manager
cc: D.Frydenlund, L. Shumway, F. Goranson, T. Slade,
P. Goble (DWMRC)