CFR›Title 16›Chapter II›Part 1021 ContainsSubparts A–CCorpusDaily eCFRDisplayed edition2026-04-24Last updated2026-04-24 PART 1021—ENVIRONMENTAL REVIEW Subparts A Subpart A—General Sections 1021.1–1021.5 B Subpart B—Procedures Sections 1021.6–1021.11 C Subpart C—Contents of Environmental Review Documents Sections 1021.12–1021.14 Authority42 U.S.C. 4321-4347; 40 CFR part 1500 et seq.Source45 FR 69434, Oct. 21, 1980, unless otherwise noted. Previous 1020 Part 1020—Small Business Next 1025 Part 1025—Rules of Practice for Adjudicative Proceedings