ML25273A048
| ML25273A048 | |
| Person / Time | |
|---|---|
| Site: | Kemmerer File:TerraPower icon.png |
| Issue date: | 11/25/2025 |
| From: | Patricia Vokoun NRC/NMSS/DREFS/EPMB3 |
| To: | Daniel Barnhurst Office of Nuclear Material Safety and Safeguards |
| References | |
| Download: ML25273A048 (0) | |
Text
MEMORANDUM TO:
Daniel Barnhurst, Chief Environmental Project Manager Branch 3 Division of Rulemaking, Environmental, and Financial Support Office of Nuclear Material Safety and Safeguards FROM:
Patricia Vokoun, Project Manager Environmental Project Manager Branch 3 Division of Rulemaking, Environmental, and Financial Support Office of Nuclear Material Safety and Safeguards
SUBJECT:
KEMMERER POWER STATION UNIT 1 CONSTRUCTION PERMIT ENVIRONMENTAL AUDIT
SUMMARY
REPORT By \
letter dated July 31, 2024 (Agencywide Documents Access and Management System (ADAMS) Accession No. ML24213A268), the U.S. Nuclear Regulatory Commission (NRC) issued its plan for conducting an environmental audit related to the TerraPower Construction Permit (CP) application for its Kemmerer Unit 1 reactor to TerraPower. The audit was initiated by entrance meeting on July 30, 2024, to support the environmental review of the CP application. The NRC environmental staff reviewed the information in the March 28, 2024, Environmental Report (ER) (ML24088A072) submitted by TerraPower as a component of its CP application and other relevant environmental information following procedures in Title 10 of the Code of Federal Regulations (10 CFR) Part 51. The audit was completed on September 8, 2025. The enclosed report presents a summary of the information obtained from the audit.
In its initial review of data and information within the corresponding context of the ER, the NRC staff identified a list of environmental information needs that would promote a better understanding of the detailed analysis and bases underlying the CP application. The staff provided these information needs to TerraPower in three separate submittals. On August 5, 2024, the staff issued batch #1 Information Needs request (ML24285A043) via e-mail (ML24285A044). On September 18, 2024, the staff issued batch #2 Information Needs request (ML24289A121) via e-mail (ML24289A120). A third round of information needs was subsequently requested on October 30, 2024, via e-mail (ML24304B068).
CONTACT: Patricia Vokoun, NMSS/REFS 301-415-3470 William Burris, NMSS/REFS 301-415-1621 November 25, 2025 Signed by Vokoun, Patricia on 11/25/25
D. Barnhurst 2
Environmental audit activities consisted of document and applicant responses reviews followed by a sequence of virtual meetings necessary to address specific questions and comments.
Issues were addressed in prearranged virtual meetings between August 14, 2024 and September 8, 2025.
During the environmental audit, the NRC reviewed documents that were made available on the applicants electronic information portal in response to the NRC draft information needs (ML24344A002) and draft Requests for Additional Information (RAIs). The NRC also participated in site visits or breakout sessions for each resource area with applicant personnel to gather information that would likely be used in the Environmental Impact Statement (EIS). This information assisted the NRC staff in identifying subsequent requests for confirmatory information or finalizing the draft RAIs and any newly identified RAIs that were needed to allow the staff to conduct a complete review and to prepare the EIS.
Docket No.: 50-613
Enclosure:
As stated cc: TerraPower Environmental Unit 1 via GovDelivery
D. Barnhurst 3
SUBJECT:
KEMMERER POWER STATION UNIT 1 CONSTRUCTION PERMIT ENVIRONMENTAL AUDIT
SUMMARY
REPORT DATE:
DISTRIBUTION:
PUBLIC P. Vokoun, NMSS W. Burris, NMSS D. Davis, NMSS T. Smith, NMSS D. Barnhurst, NMSS J. Zimmerman, NMSS N. Morgan, NMSS J. Ezell, OGC J. Wachutka, OGC M. Sutton, NRR J. Borromeo, NRR R. Alexander, RIV S. Burnell, HQ/OPA A. Moreno, OCA A Miracle, PNNL (Ann.Miracle@pnnl.gov)
J. Jackson, PNNL (James.Jackson@pnnl.gov)
C. Conrad, PNNL (Cyler.N.Conrad@pnnl.gov)
R. Sprengel, TerraPower (rsprengel@terrapower.com)
G. Applegate, DOE (Gretchen.Applegate@ee.doe.gov)
R. Sprengel, TerraPower (rsprengel@terrapower.com)
N. Kellenberger, TerraPower (nkellenberger@terrapower.com)
B. Dalick, TerraPower (bdalick@terrapower.com)
I. Gifford, TerraPower (igifford@terrapower.com)
ADAMS Accession Number: ML25273A038 (Pkg), ML25273A048 (Memo), ML25261A158 (Encl.)
OFFICE NMSS/REFS/EPMB3:
PM NMSS/REFS/EPMB3:
LA NMSS/REFS/EPMB3:
PM NMSS/REFS/EPMB3:
BC NAME WBurris MCampestrin PVokoun DBarnhurst DATE 09/30/2025 10/3/2025 10/6/2025 10/29/2025 OFFICE NMSS/REFS/EPMB3:
PM NAME PVokoun DATE 11/25/2025 OFFICIAL RECORD COPY November 25, 2025