49 CFR § 520.28 - Preparation of final environmental impact statements.

(a) If the action is to go forward and the DEIS has not been changed to a negative declaration, as soon as practicable after the expiration of the comment period and hearing process, if any, the official responsible for the action shall prepare a final environmental impact statement (FEIS), taking into account all comments received and issues raised during such period and process.

(b) The FEIS shall conform to the guidelines for form and content in Attachment 1.

(c) The FEIS shall then be submitted to the Chief Counsel by the official responsible for the action, for determination of legal sufficiency.