42 U.S.C. 4321-4347
Requires federal agencies to consider the effects of all actions on the environment, consider alternatives that reduce impacts, and prepare detailed statements for public and federal agency review where significant impacts may occur.
Agencies are required to solicit and respond to comments from the public, affected interests, and relevant government agencies on the impacts of proposed actions before and after environmental documentation is developed. Documentation consists of an Environmental Assessment (EA) or an Environmental Impact Statement (EIS).