A document prepared in compliance with the National Environmental Policy Act, supported by an environmental assessment, that briefly presents why a Federal action will have no significant effect on the human environment and for which an environmental impact statement, therefore, will not be prepared (40 CFR 1508.13).
An administrative determination by the Federal Highway Administration based upon studies providing data to support that a project will have no significant impact on the environment or the community.
A document written when research and reconnaissance of a particular area reveal no significant impact to the natural, cultural, aesthetic, or economic environment.
The public document describing the decision made on selecting the "preferred alternative" in an environmental assessment. See "environmental assessment."
A determination of an Environmental Assessment (EA) indicating that a project has no significant environmental impact.
A document prepared by a federal agency showing why a proposed action would not have a significant impact on the environment and thus would not require preparation of an Environmental Impact Statement. An FNSI is based on the results of an environmental assessment.