{"data":{"id":"us/10-cfr-51.21","jurisdiction":"us","citation":"10 CFR 51.21","heading":"Criteria for and identification of licensing and regulatory actions requiring environmental assessments.","body":"All licensing and regulatory actions subject to this subpart require an environmental assessment except those identified in § 51.20(b) as requiring an environmental impact statement, those covered by categorical exclusions identified in § 51.22(a) through (d), and those identified in § 51.22(e) as other actions not requiring environmental review. As provided in § 51.22, the Commission may, in special circumstances, prepare an environmental assessment on an action that could be covered by a categorical exclusion.","path":["Title 10—Energy","CHAPTER I—NUCLEAR REGULATORY COMMISSION","PART 51—ENVIRONMENTAL PROTECTION REGULATIONS FOR DOMESTIC LICENSING AND RELATED REGULATORY FUNCTIONS","Subpart A—National Environmental Policy Act—Regulations Implementing Section 102(2)"],"source_url":"https://www.ecfr.gov/api/versioner/v1/full/2026-08-25/title-10.xml","current_through":"2026-08-25","vintage":"","retrieved_at":"2026-08-27T02:24:09Z","sha256":"72028295e24fb8489b23912666ca3bac5374fcccf63292431c937f53b08ff3c0","source_id":"us-cfr","stale":true,"prev":"us/10-cfr-51.20","next":"us/10-cfr-51.22"},"notice":"GroundRules: Original legal text. Not legal advice."}