DRC-2025-001460

299 South Main Street, Suite 1700 ▪ Salt Lake City, Utah 84111
[phone] ▪ Fax: [phone] ▪ www.energysolutions.com
May 2, 2025 CD-2025-094
Mr. Doug Hansen, Director
Division of Waste Management and Radiation Control
P.O. Box 144880
Salt Lake City, UT 84114-4880
Re: Groundwater Quality Discharge Permit Number UGW450005 (GWQDP):
Notification of Return of Monitoring Well GW-24 to Quarterly Water Level
Measurement Frequency
Dear Mr. Hansen:
On March 10, 2023, EnergySolutions provided notice that the frequency of depth-to-water
monitoring at well GW-24 had changed from quarterly to monthly (submittal CD-2023-059).
Based on subsequent depth-to-water monitoring, EnergySolutions provides notice the
frequency of water-level monitoring at well GW-24 has returned to quarterly. This
notification of return to quarterly monitoring is performed in accordance with the
modification of GWQDP Part I.F.5.a, approved by the Division of Waste Management and
Radiation Control on March 28, 2023 (DRC-2023-001933).
As of April 2025, the depth-to-water measurement of well GW-24 is within 0.39 feet of the
baseline measurement, less than the 0.4-foot criterion listed in GWQDP Part I.F.5.a.
In accordance with the requirements of GWQDP Part I.H.2, this information will be
documented in the annual monitoring report to be submitted on or before March 1, 2026.
Should you have any questions regarding this notification, please feel free to contact me at
[phone].
Sincerely,
Mathew R Schon
Manager, Groundwater and Environmental Program
I certify under penalty of law that this document and all attachments were prepared under my direction or supervision in accordance
with a system designed to assure that qualified personnel properly gather and evaluate the information submitted. Based on my inquiry
of the person or persons who manage the system, or those persons directly responsible for gathering the information, the information
submitted is, to the best of my knowledge and belief, true, accurate, and complete. I am aware that there are significant penalties for
submitting false information, including the possibility of fine and imprisonment for knowing violations.