DRC-2019-002025 - 0901a068809d43b8

DRC-2019-002025 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
GARY R. HERBERT Governor SPENCER J. COX
Lieutenant Governor
Department of
Environmental Quality
Alan Matheson Executive Director DIVISION OF WASTE MANAGEMENT AND RADIATION CONTROL Rusty Lundberg Acting Director
March 5, 2019
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 January 24, 2019 Request to Return Certain
Groundwater Monitoring Parameters to Baseline Monitoring Frequency. Utah Groundwater Discharge Permit No. UGW370004 Dear Ms. Weinel:

The Utah Division of Waste Management and Radiation Control (DWMRC) has completed review of the Energy Fuels Resources (USA) Inc. (EFR), January 24, 2019, State of Utah Ground Water Discharge Permit No. UGW370004 White Mesa Uranium Mill – Removal of Certain Groundwater Monitoring Parameters from Accelerated Monitoring Status.

Based on review of the EFR January 24, 2019 request, EFR 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-26 Field pH 8 Quarterly
MW-30 Field pH 8 Quarterly
MW-32 Sulfate 8 Semi-Annual
It was noted that the above monitoring well parameters have had sample results below the Permitted Ground Water Compliance Limits (GWCLs) for the most recent eight consecutive accelerated sampling
events. Per 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,

Rusty Lundberg, Acting Director Division of Waste Management and Radiation Control RL/TR/kb

c: Kirk Benge, Health Officer, San Juan Public Health Department Rick Meyer, Environmental Health Director, San Juan Public Health Department Scott Hacking, P.E., DEQ District Engineer