DRC-2025-000479

299 South Main Street, Suite 1700 ▪ Salt Lake City, Utah 84111
[phone] ▪ Fax: [phone] ▪ www.energysolutions.com
February 10, 2025 CD-2025-025
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-92 and I-3-100 to Quarterly Water
Level Measurement Frequency
Dear Mr. Hansen:
Based on subsequent depth-to-water monitoring, EnergySolutions provides notice that the
frequency of water-level monitoring at well GW-92 has returned to quarterly. On March 10,
2023, EnergySolutions provided notice that the frequency of depth-to-water monitoring at
well GW-92 had changed from quarterly to monthly (submittal CD-2023-059).
Based on subsequent depth-to-water monitoring, EnergySolutions provides notice that the
frequency of water-level monitoring at well I-3-100 has returned to quarterly. On January
16, 2025, EnergySolutions provided notice that the frequency of depth-to-water monitoring at
well I-3-100 had changed from quarterly to monthly (submittal CD-2025-011).
The 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 the fourth quarter of 2024, the depth-to-water measurement of well GW-92 is within
0.37 feet of the baseline measurement and I-3-100 is within 0.38 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
Mr. Doug Hansen
February 10, 2025
CD-2025-025
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of the person or persons who manage the system, or those persons directly responsible for gathering the information, the information
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