Environmental process | Environmental review | Section 4(f)
Section 4(f) legal authority
- 49 U.S.C. 303 – Policy on lands, wildlife and waterfowl refuges, and historic sites
- 23 U.S.C. 138 – Preservation of Parkland
- 23 CFR 774 – Parks, Recreation Areas, Wildlife and Waterfowl Refuges, and Historic Sites