[Federal Register Volume 90, Number 117 (Friday, June 20, 2025)]
[Notices]
[Pages 26333-26334]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2025-11307]


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NUCLEAR REGULATORY COMMISSION

[Docket No. 50-613; NRC-2024-0078]


US SFR Owner, LLC; Kemmerer Power Station, Unit 1; Draft 
Environmental Impact Statement

AGENCY: Nuclear Regulatory Commission.

ACTION: Notice; request for comment.

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SUMMARY: The U.S. Nuclear Regulatory Commission (NRC), in cooperation 
with the U.S. Department of Energy (DOE), is issuing for public comment 
a draft Environmental Impact Statement (EIS). The draft EIS is in 
response to an application submitted by TerraPower, LLC (TerraPower) on 
behalf of US SFR Owner, LLC (USO), a wholly owned subsidiary of 
TerraPower, for a construction permit (CP) for a Natrium advanced 
reactor at a site in Lincoln County, Wyoming, designated as Kemmerer 
Power Station, Unit 1 (Kemmerer Unit 1). USO plans to build and operate 
Kemmerer Unit 1 to demonstrate the Natrium advanced reactor while 
ultimately replacing electricity generation capacity in the PacifiCorp 
service area following planned retirement of existing coal-fired 
facilities. The draft EIS evaluates the environmental impacts of the 
proposed action of issuing a CP that would allow the construction of 
Kemmerer Unit 1, as well as the environmental impacts of the following 
alternatives to the proposed action: (1) the no-action alternative 
(i.e., denying the CP application) and (2) building the proposed 
Natrium advanced reactor at a different location.

DATES: Submit comments on the draft EIS by August 4, 2025. Comments 
received after this date will be considered if it is practical to do 
so, but the NRC is able to ensure consideration only for comments 
received on or before this date.

ADDRESSES: You may submit comments by any of the following methods; 
however, the NRC encourages electronic comment submission through the 
Federal rulemaking website:
     Federal rulemaking website: Go to https://www.regulations.gov and search for Docket ID NRC-2024-0078. Address 
questions about Docket IDs in Regulations.gov to Bridget Curran; 
telephone: 301-415-1003; email: [email protected]. For technical 
questions, contact the individual listed in the FOR FURTHER 
IINFORMATION CONTACT section of this document.
     Email: Comments may be submitted to the NRC electronically 
using the email address [email protected].
     Mail comments to: Office of Administration, Mail Stop: 
TWFN-7-A60M, U.S. Nuclear Regulatory Commission, Washington, DC 20555-
0001, ATTN: Program Management, Announcements and Editing Staff.
    For additional direction on obtaining information and submitting 
comments, see ``Obtaining Information and Submitting Comments'' in the 
SUPPLEMENTARY INFORMATION section of this document.

FOR FURTHER INFORMATION CONTACT: Patricia Vokoun, Office of Nuclear 
Material Safety and Safeguards, U.S. Nuclear Regulatory Commission, 
Washington, DC 20555-0001; telephone: 301-415-3470; email: 
[email protected].

SUPPLEMENTARY INFORMATION:

I. Obtaining Information and Submitting Comments

A. Obtaining Information

    Please refer to Docket ID NRC-2024-0078 when contacting the NRC 
about the availability of information for this action. You may obtain 
publicly available information related to this action by any of the 
following methods:
     Federal Rulemaking Website: Go to https://www.regulations.gov and search for Docket ID NRC-2024-0078.
     NRC's Agencywide Documents Access and Management System 
(ADAMS): You may obtain publicly available documents online in the 
ADAMS Public Documents collection at https://www.nrc.gov/reading-rm/adams.html. To begin the search, select ``Begin Web-based ADAMS 
Search.'' For problems with ADAMS, please contact the NRC's Public 
Document Room (PDR) reference staff at 1-800-397-4209, at 301-415-4737, 
or by email to [email protected]. The draft EIS is available in 
ADAMS under Accession No. ML25154A651.
     NRC's PDR: The PDR, where you may examine and order copies 
of publicly available documents, is open by appointment. To make an 
appointment to visit the PDR, please send an email to 
[email protected] or call 1-800-397-4209 or 301-415-4737, between 8 
a.m. and 4 p.m. eastern

[[Page 26334]]

time (ET), Monday through Friday, except Federal holidays.
     Public Library: A copy of the draft EIS will be available 
for public review at the Lincoln County Library, 519 Emerald Street, 
Kemmerer, WY 83101.

B. Submitting Comments

    The NRC encourages electronic comment submission through the 
Federal Rulemaking website (https://www.regulations.gov). Please 
include Docket ID NRC-2024-0078 in your comment submission.
    The NRC cautions you not to include identifying or contact 
information that you do not want to be publicly disclosed in your 
comment submission. The NRC will post all comment submissions at 
https://www.regulations.gov as well as enter the comment submissions 
into ADAMS. The NRC does not routinely edit comment submissions to 
remove identifying or contact information.
    If you are requesting or aggregating comments from other persons 
for submission to the NRC, then you should inform those persons not to 
include identifying or contact information that they do not want to be 
publicly disclosed in their comment submission. Your request should 
state that the NRC does not routinely edit comment submissions to 
remove such information before making the comment submissions available 
to the public or entering the comment into ADAMS.

II. Background

    By letter dated March 28, 2024 (ADAMS Package Accession No. 
ML24088A059), TerraPower on behalf of USO, a wholly owned subsidiary of 
TerraPower, submitted to the NRC pursuant to section 103 of the Atomic 
Energy Act of 1954, as amended, and part 50 of title 10 of the Code of 
Federal Regulations (10 CFR), ``Domestic Licensing of Production and 
Utilization Facilities,'' an application for a CP that would allow the 
construction of Kemmerer Unit 1 in Lincoln County, Wyoming, as part of 
participation in DOE's Advanced Reactor Demonstration Program. The 
proposed facilities would house one 840-megawatt thermal, pool-type, 
sodium-cooled fast reactor connected to a molten salt energy storage 
system that enables variable energy supply up to 500 megawatts electric 
net. This submission initiated the proposed Federal action of 
determining whether to issue the requested CP. The CP application was 
supplemented on May 2, 2024 (ADAMS Accession Nos. ML24123A242 and 
ML24123A243) and on May 9, 2024 (ADAMS Accession No. ML24130A181). A 
notice of receipt and availability of the CP application was published 
in the Federal Register on May 14, 2024 (89 FR 42004). A notice of 
intent to prepare an EIS and to conduct a scoping process was published 
on June 12, 2024 (89 FR 49917).
    As set forth in 10 CFR 51.20(b), issuance of a CP to construct a 
nuclear power reactor is an action that requires an EIS. This notice is 
being published in accordance with the National Environmental Policy 
Act of 1969, as amended (NEPA), and the NRC's regulations implementing 
NEPA at 10 CFR part 51, ``Environmental Protection Regulations for 
Domestic Licensing and Related Regulatory Functions.'' In addition, 
pursuant to 36 CFR 800.8(c), the NRC is using the process and 
documentation for the preparation of the draft EIS to comply with 
section 106 of the National Historic Preservation Act of 1966, as 
amended, in lieu of the procedures set forth in 36 CFR 800.3 through 
800.6.

III. Discussion

    The NRC is issuing the draft EIS for public comment. The draft EIS 
includes the evaluation of the environmental impacts of the proposed 
action of issuing a CP that would allow the construction of Kemmerer 
Unit 1, as well as the environmental impacts of the no-action 
alternative and the alternative of building the proposed Natrium 
advanced reactor at a different location. In the draft EIS, after 
weighing the environmental, economic, technical, and other benefits 
against environmental and other costs, and considering reasonable 
alternatives, the preliminary recommendation is, unless safety issues 
mandate otherwise, that the NRC issue the requested CP to USO. This 
preliminary recommendation is based on the CP application, information 
gathered during the environmental audit, and responses to requests for 
clarifying information; consideration of public comments received 
during the scoping process; consultation with Federal, State, Tribal, 
and local agencies; and the independent environmental review and 
assessment summarized in the draft EIS.

    Dated: June 16, 2025.

    For the Nuclear Regulatory Commission.
Jacob Zimmerman,
Acting Director, Division of Rulemaking, Environmental, and Financial 
Support, Office of Nuclear Material Safety, and Safeguards.
[FR Doc. 2025-11307 Filed 6-18-25; 8:45 am]
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