The environmental review process initiated with the passage of the 1966 National Historic Preservation Act (NHPA) (P.L. 89-665; 80 Stat. 915; 16 U.S.C. 470) by Congress ushered in a new approach to Federal project planning. The passage of the National Environmental Policy Act of 1969 (NEPA) (P.L. 91-190; 83 Stat. 852; 42 U.S.C. 4321) in December 1969 and its subsequent signing into law on January 1, 1970, expanded environmental reviews and formally established environmental protection as a Federal policy. NEPA and NHPA require Federal officials to “stop, look, and listen” before making decisions that impact historic properties and the human environment.
Council on Environmental Quality, and Advisory Council on Historic Preservation. 2013. NEPA and NHPA: A Handbook for Integrating NEPA and Section 106. Washington, D.C. March.