Code of Federal Regulations Title 45. Public Welfare § 45.900.301 Content

(a) An EA shall include brief discussions of the need for the proposal;  of alternatives to the proposal as required by NEPA section 102(2)(E);  and of the environmental impacts of the proposal and alternatives. The EA shall also include a listing of agencies and persons consulted in the preparation of the EA.

(b) An EA may describe a broad range of alternatives and proposed mitigation measures to facilitate planning and decisionmaking.

(c) The EA should also document compliance, to the extent possible, with all applicable environmental laws and Executive Orders, or provide reasonable assurance that those requirements can be met.

(d) The EA should be a concise public document. The level of detail and depth of impact analysis will normally be limited to the minimum needed to determine the significance of potential environmental effects.