Scope of EIS Requirement — The EIS requirement applies to a broad
range of projects — not only those a federal agency undertakes itself but
also those by other parties, as a result of some federal decision, when such
projects will affect environmental quality.
The NEPA’s EIS requirement is also construed to apply to the urban
environment, not just to the natural environment.
Health effect, including psychological health, are considered environmental
effect under the NEPA. However, the Supreme Court has held that an e6ect
Content of an EIS — The EIS must describe in detail:
• the environmental impact of a proposed action,
• any adverse environmental effect that could not be avoided if the
proposal were implemented,
• alternatives to the proposed action, (including doing nothing)
• the relationship between local short-term uses of the environment and
the maintenance and enhancement of long-term productivity,
• and any irreversible and irretrievable commitments of resources the
Nature of EIS Requirement — After the NEPA was enacted, it was unclear
whether the act was solely procedural or whether it had a substantive
component. The Supreme Court resolved the issue by holding that the
NEPA’s requirements are primarily procedural and that the NEPA does not
require that the relevant Federal agency attempt to mitigate the adverse
effect of a proposed Federal action. Rather, NEPA attempts to prohibit
uninformed decisions, not unwise agency actions.
B. THE CLEAN AIR ACT
Initially, the states had primary responsibility for controlling air pollution, and
the federal government merely supervised the states’ effort and offered
technical and financial assistance. But state effort proved inadequate, and