an Environmental Impact Statement (EIS). (40 CFR 1508.27).

Assessment (EA)), which in turn require varying levels of documentation in the NEPA process. A brief review of each class follows. More discussion is found in the Code of Federal Regulation, 23 CFR 771. A summary of how to prepare these documents is found in FHWA Technical Advisory T 6640.8A. For all federal aid projects, the Environmental Document author should coordinate the need for Environmental Documentation with the Environmental Section in the Environmental and Transportation Services Division. The three classes are as follows: Class I Actions- These are actions that may significantly affect the environment and will requir