The National Environmental Policy Act of 1969, as amended (42 U.S.C. 4321 et seq.).
A federal law passed in 1990 that promotes efforts to prevent or eliminate damage to the environment and biosphere and stimulates the health and welfare of people. It established a Council on Environmental Quality. It is comprised of two Titles: Title I - Declaration of National Environmental Policy; Title II -Council on Environmental Quality.
The law that requires Federal agencies to assess the environmental impact of implementing their major programs and actions early in the planning process. NEPA establishes the use of Environmental Assessments (EAs) and Environmental Impact Statements (EISs) by Federal agencies.