EA. Refers to an Environmental Assessment, which is a document prepared pursuant to 40 CFR parts 1500-1508 and 771.119 of this title for a proposed project that is not categorically excluded but for which an EIS is not clearly required.
23 CFR § 774.17
The definitions contained in 23 U.S.C. 101 are applicable to this part. In addition, the following definitions apply: