NEPA
What does "NEPA" mean in law?
The National Environmental Policy Act of 1969 (42 U.S.C. 4321 et seq.) is the foundational federal environmental statute requiring all federal agencies to assess the environmental effects of their proposed actions before making decisions. NEPA does not mandate particular outcomes but imposes procedural requirements: agencies must prepare an Environmental Assessment (EA) or, for major federal actions significantly affecting the environment, a full Environmental Impact Statement (EIS). The Supreme Court in Robertson v. Methow Valley Citizens Council (1989) confirmed that NEPA is purely procedural, meaning an agency can proceed with an environmentally harmful action so long as it takes the requisite "hard look" at environmental consequences. NEPA is enforced primarily through judicial review under the Administrative Procedure Act, with courts examining whether the agency's environmental analysis was arbitrary and capricious.
Definition
The National Environmental Policy Act of 1969 (42 U.S.C. 4321 et seq.) is the foundational federal environmental statute requiring all federal agencies to assess the environmental effects of their proposed actions before making decisions. NEPA does not mandate particular outcomes but imposes procedural requirements: agencies must prepare an Environmental Assessment (EA) or, for major federal actions significantly affecting the environment, a full Environmental Impact Statement (EIS). The Supreme Court in Robertson v. Methow Valley Citizens Council (1989) confirmed that NEPA is purely procedural, meaning an agency can proceed with an environmentally harmful action so long as it takes the requisite "hard look" at environmental consequences. NEPA is enforced primarily through judicial review under the Administrative Procedure Act, with courts examining whether the agency's environmental analysis was arbitrary and capricious.
Example
Before approving a new interstate highway through a national forest, the Federal Highway Administration must prepare an EIS under NEPA analyzing impacts on wildlife habitat, water quality, and surrounding communities.