ML25072A221

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NRC Review Mar 2025 DOE-LM Preliminary Assess Report Pore Water Discharge Rifle Co Disposal Site
ML25072A221
Person / Time
Site: WM-00062
Issue date: 03/19/2025
From: Hayes K
NRC/NMSS/DDUWP/URMDB
To: Matt Young
US Dept of Energy, Office of Legacy Management
References
Download: ML25072A221 (1)


Text

Mary Young, LM Site Manager U.S. Department of Energy Office of Legacy Management 2597 Legacy Way Grand Junction, CO 81503

SUBJECT:

U.S. NUCLEAR REGULATORY COMMISSION (NRC) STAFF REVIEW OF THE MARCH 2025, U.S. DEPARTMENT OF ENERGY - OFFICE OF LEGACY MANAGEMENT, PRELIMINARY ASSESSMENT REPORT FOR PORE WATER DISCHARGE ONTO THE RIFLE, COLORADO, DISPOSAL SITE (WM-00062)

Dear Ms. Young:

The U.S. Nuclear Regulatory Commission (NRC) is writing in response to the U.S.

Department of Energy, Office of Legacy Management (DOE-LM) document entitled, Preliminary Assessment Report for Pore Water Discharge onto the Rifle, Colorado, Disposal Site, dated March 3, 2025, (Received March 4, 2025; Agencywide Documents Access and Management System [ADAMS] Accession No. ML25063A141). The submittal describes the DOE-LM response to the January 20, 2025, freeze event which resulted in several of the new extraction wells knocked out of service, as well as broken extraction system transmission discharge lines, and a pore water discharge volume of approximately 690 gallons on the disposal cell surface. DOE-LM confirmed that the discharge did not exceed regulatory reporting requirements. All 10 of the new extraction wells and both standpipes were fully operational as of February 12, 2025.

NRC has no comments or questions on the submittal. We look forward to the scheduled Extraction System Update meeting on March 24, 2025.

March 19, 2025

M. Young 2

If you have any questions concerning the NRC review of the submittal, please contact me at 301-415-0549 or by email at Kevin.Hayes@nrc.gov.

Sincerely, Kevin R. Hayes, P.G., CPG, Hydrogeologist Uranium Recovery and Materials Decommissioning Branch Division of Decommissioning, Uranium Recovery, and Waste Programs Office of Nuclear Material Safety and Safeguards Docket Number: WM-00062 cc: Rifle, CO ListServ List Signed by Hayes, Kevin on 03/19/25

ML25072A221; Ltr ML25072A221 OFFICE NMSS/DUWP

/URMDB NMSS/DUWP

/URMDB NMSS/DUWP

/URMDB NAME KHayes RVonTill KHayes DATE Mar 18, 2025 Mar 19, 2025 Mar 19, 2025