18 CFR § 1318.300
Purpose and scope
April 15, 2021
(a) TVA shall prepare an EA for any proposed action not qualifying as a categorical exclusion to determine whether an EIS is necessary or a FONSI can be prepared. An EA need not be initiated (or completed) when TVA determines that it will prepare an EIS.
(b) An EA shall concisely communicate information and analyses about issues that are potentially significant and reasonable alternatives.