DRC-2021-010563 - 0901a06880f1f8c4

DRC-2021-010563 195 North 1950 West • Salt Lake City, UT Mailing Address: P.O. Box 144880 • Salt Lake City, UT 84114-4880 Telephone [phone] • Fax [phone] • T.D.D. [phone]
www.deq.utah.gov
Printed on 100% recycled paper
State of Utah
SPENCER J. COX Governor DEIDRE HENDERSON Lieutenant Governor
Department of Environmental Quality
Kimberly D. Shelley Executive Director
DIVISION OF WASTE MANAGEMENT AND RADIATION CONTROL Douglas J. Hansen Director August 4, 2021
Kathy Weinel, Quality Assurance Manager
Energy Fuels Resources (USA) Inc.
225 Union Blvd., Suite 600 Lakewood, CO 80228 RE: Energy Fuels Resources, White Mesa Uranium Mill July 28, 2021, Request to Return Certain Groundwater Monitoring Parameters to Baseline Monitoring Frequency.
Utah Groundwater Discharge Permit No. UGW370004 Dear Ms. Weinel:
The Division of Waste Management and Radiation Control (DWMRC) has completed review of the
Energy Fuels Resources (USA) Inc. (EFRI), July 28, 2021, State of Utah Ground Water Discharge
Permit No. UGW370004 White Mesa Uranium Mill – Removal of Certain Groundwater Monitoring Parameters from Accelerated Monitoring Status. Per Review, EFRI requests that certain monitoring well parameters be returned to baseline monitoring as
listed on the table below:
Monitoring
Well
Parameter Number of Consecutive
Sample Results Below the GWCL
Baseline Monitoring
Frequency
MW-11 Total Dissolved Solids (TDS) 9 Quarterly

It was noted in the review of groundwater monitoring data, including laboratory data sheets included with the EFRI Request, that MW-11 TDS sample results have been below the Permitted Ground Water Compliance Limits (GWCLs) for the most recent nine consecutive accelerated sampling events. According to past DWMRC protocols, accelerated monitoring may be discontinued if at least eight
consecutive samples show concentrations below the GWCL; therefore, the request to return to baseline
monitoring for the wells/parameters on the table above is hereby approved.
(Over)

If you have any questions, please call Tom Rushing at [phone].

Sincerely, Phil Goble, Uranium Mills and Radioactive Materials Section Manager
Division of Waste Management and Radiation Control PRG/TR/as
c: Mike Moulton, Interim Health Officer, San Juan County Public Health Department
Ronnie Nieves, Environmental Health Director, San Juan County Public Health Department Russell Seeley, UDEQ District Engineer