CFR›Title 24›Subtitle A›Part 50›Subpart F ContainsSections 50.41–50.43CorpusDaily eCFRDisplayed edition2026-04-15Last updated2026-04-15 Subpart F—Environmental Impact Statements Sections 50.41 § 50.41 EIS policy. 50.42 § 50.42 Cases when an EIS is required. 50.43 § 50.43 Emergencies. Previous E Subpart E—Environmental Assessments and Related Reviews