DRC-2024-004678

299 South Main Street, Suite 1700 ▪ Salt Lake City, Utah 84111
[phone] ▪ Fax: [phone] ▪ www.energysolutions.com

February 26, 2024 CD-2024-037

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) – BAT
Concerns, Rotary Dump Facility & SRS DU Storage Building

Dear Mr. Hansen:

On February 20, 2024 water was found above the grate in the sediment basin of the
Rotary Dump Facility. The facility was placed out of service and the water was pumped
down below the grate the same day by putting the pump into manual mode. Maintenance
was notified of the issue the same day and repairs were scheduled for February 22, 2024.
Per GWQDP Appendix K 4.15.2.4.7, EnergySolutions notified the Director of Waste
Management and Radiation Control of the concern via e-mail on February 21, 2024. On
February 22, 2024 water was above the grate due to a rain event of 0.29 inches from the
evening of February 20, 2024 through the afternoon of February 21, 2024, delaying pump
repairs. The pump was put into manual mode and the water was pumped below the grate
the same day. Per GWQDP Appendix K 4.15.2.4.7, EnergySolutions notified the Director
of Waste Management and Radiation Control of the concern via e-mail on February 22,
2024. On February 23, 2024 maintenance replaced a cracked float that was preventing the
pump’s auto mode for operating correctly. The facility was placed back into service on
February 22, 2024.

On February 20, 2024 the BAT inspector discovered the presence of water in the interior
of the SRS DU Storage Building. Water did not contact any waste containers. The Clive
Facility received 0.36 inches of measurable precipitation from the night before. The BAT
inspector removed the water on the same day as the inspection by wiping the water from
the protective plastic. EnergySolutions notified the Director of Waste Management and
Radiation Control of the concern via e-mail on February 21, 2024.

On February 22, 2024 the BAT inspector discovered the presence of water in the interior
of the SRS DU Storage Building. Water did not contact any waste containers. The Clive
Facility received 0.29 inches of measurable precipitation during the evening of February
20, 2024 through the afternoon of February 21, 2024. The BAT inspector removed the
water on the same day as the inspection by wiping the water from the protective plastic.
EnergySolutions notified the Director of Waste Management and Radiation Control of
the concern via e-mail on February 22, 2024.

Mr. Doug Hansen
February 26, 2024
CD-2024-037
Page 2 of 2

This letter provides the required 7-day written notification for all four of the above BAT
concerns.

Please contact me at [phone] with any questions regarding this notification.

Sincerely,

Jon Anderson
Environmental Compliance Manager

cc: Charles Bishop (DWMRC)
Brandon Davis (DWMRC)

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.
Jonathan C.
Anderson
Digitally signed by
Jonathan C. Anderson
Date: 2024.02.26
15:36:32 -07'00'