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Nuclear Regulatory Commission.
Notice; issuance.
The U.S. Nuclear Regulatory Commission (NRC), in cooperation with the U.S. Army Corps of Engineers, is issuing a final supplemental environmental impact statement (SEIS), “Environmental Impact Statement for a Construction Permit Application at the Clinch River Nuclear Site: Final Report.” The NRC is issuing this final SEIS as part of its review of the application submitted by Tennessee Valley Authority (TVA) for a construction permit (CP) for one GE Vernova Hitachi BWRX-300 small modular reactor (SMR) at a site in Roane County, Tennessee, designated as Clinch River Nuclear Site, Unit 1 (CRN-1). TVA plans to construct and operate CRN-1 to demonstrate the feasibility of constructing and operating the BWRX-300 SMR. The final SEIS evaluates the environmental impacts of the proposed action of issuing a CP that would allow the construction of CRN-1, as well as the environmental impacts of alternatives to the proposed action.
The final SEIS is available as of April 1, 2026.
Please refer to Docket ID NRC-2024-0146 when contacting the NRC about the availability of information regarding this document. You may obtain publicly available information related to this document using any of the following methods:
Madelyn Nagel, Office of Nuclear Material Safety and Safeguards, U.S. Nuclear Regulatory Commission, Washington, DC 20555-0001; telephone: 301-415-3470; email: Madelyn.Nagel@nrc.gov.
By letters dated April 28, 2025 (ADAMS Accession No. ML25118A209) and May 20, 2025 (ADAMS Package Accession No. ML25140A062), TVA 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 CRN-1 in Roane County, Tennessee. The proposed facility would house one GE Vernova Hitachi BWRX-300 SMR. This submission initiated the proposed Federal action of determining whether to issue the requested CP. A notice of receipt and availability of the CP application was published in the Federal Register on June 10, 2025 (90 FR 24425). A notice of acceptance for docketing of the complete application and opportunity to request a hearing was published in the Federal Register on July 15, 2025 (90 FR 31709). A notice of intent to prepare a supplement to the early site permit environmental impact statement (EIS) was published on July 18, 2025 (90 FR 34015).
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 or a supplement to 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 section 800.8(c) of title 36 of the Code of Federal Regulations (36 CFR), the NRC used the process and documentation for the preparation of the SEIS 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.
A notice of availability and request for comment on the draft SEIS was published in the Federal Register on November 7, 2025 (90 FR 50498). The public comment period on the draft SEIS ended on December 22, 2025, and the comments received on the draft SEIS are addressed in the final SEIS.
As discussed in the final SEIS, after weighing the environmental, economic, technical, and other benefits against environmental and other costs, and considering reasonable alternatives, the recommendation is, unless safety issues mandate otherwise, that the NRC issue the requested CP to TVA. This recommendation is based on the CP application, information gathered during the environmental audit, and responses to requests for clarifying information; consultation with Federal, State, Tribal, and local agencies; the independent environmental review and assessment summarized in the final SEIS; and consideration of public comments received on the draft SEIS. In addition, no environmentally preferable alternatives that meet the purpose and need for the proposed action were identified; therefore, there is no obvious superior alternative to the proposed action from an environmental perspective.
Dated: April 1, 2026.
( printed page 17313)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. 2026-06571 Filed 4-3-26; 8:45 am]
BILLING CODE 7590-01-P