Supplemental EIS Mandated for Tennessee-Tombigbee Waterway
The National Environmental Policy Act's (NEPA's) requirement that environmental impact statements (EISs) be prepared for "major Federal actions significantly affecting the quality of the human environment"1 has been well defined by the courts and is now a fact of life with which federal agencies routinely contend. Less well defined or accepted, however, is the requirement that impact statements be supplemented when important new information comes to light or when a project has been modified such that the original EIS is rendered inadequate.