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10 CFR § 51.25 - Determination to prepare environmental impact statement or environmental assessment; eligibility for categorical exclusion.

---
identifier: "/us/cfr/t10/s51.25"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "10 CFR § 51.25 - Determination to prepare environmental impact statement or environmental assessment; eligibility for categorical exclusion."
title_number: 10
title_name: "Energy"
section_number: "51.25"
section_name: "Determination to prepare environmental impact statement or environmental assessment; eligibility for categorical exclusion."
chapter_name: "NUCLEAR REGULATORY COMMISSION"
part_number: "51"
part_name: "ENVIRONMENTAL PROTECTION REGULATIONS FOR DOMESTIC LICENSING AND RELATED REGULATORY FUNCTIONS"
positive_law: false
currency: "2026-03-24"
last_updated: "2026-03-24"
format_version: "1.1.0"
generator: "[email protected]"
authority: "Atomic Energy Act of 1954, secs. 161, 193 (42 U.S.C. 2201, 2243); Energy Reorganization Act of 1974, secs. 201, 202 (42 U.S.C. 5841, 5842); National Environmental Policy Act of 1969 (42 U.S.C. 4332, 4334, 4335); Nuclear Waste Policy Act of 1982, secs. 144(f), 121, 135, 141, 148 (42 U.S.C. 10134(f), 10141, 10155, 10161, 10168); 44 U.S.C. 3504 note."
regulatory_source: "49 FR 9381, Mar. 12, 1984, unless otherwise noted."
cfr_part: "51"
---

# 51.25 Determination to prepare environmental impact statement or environmental assessment; eligibility for categorical exclusion.

Before taking a proposed action subject to the provisions of this subpart, the appropriate NRC staff director will determine on the basis of the criteria and classifications of types of actions in §§ 51.20, 51.21 and 51.22 of this subpart whether the proposed action is of the type listed in § 51.22(c) as a categorical exclusion or whether an environmental impact statement or an environmental assessment should be prepared. An environmental assessment is not necessary if it is determined that an environmental impact statement will be prepared.