14 CFR § 1216.311 - Emergency responses.
(a) When the Responsible Official determines that an emergency exists that makes it necessary to take urgently needed actions before preparing a NEPA analysis and any required documentation, in accordance with the provisions in §§ 1216.305 and 1216.307 of this subpart, then the following provisions apply:
(1) The Responsible Official may take urgently needed actions that are necessary to control the immediate impacts of the emergency needed to mitigate harm to life, property, or resources. When taking such actions, the Responsible Official shall, to the extent practical, mitigate foreseeable adverse environmental impacts.
(b) At the earliest practicable time, the Responsible Official shall also notify the SEO of the emergency situation and the action(s) taken. The SEO will determine the appropriate NEPA action associated with the urgent actions taken as a result of the emergency. If the urgent actions will reasonably result in significant environmental impacts, the SEO will consult with the CEQ to ensure compliance with 40 CFR 1506.11 as soon as is reasonable.
(c) If the Responsible Official proposes emergency actions which continue beyond the urgent actions taken as a result of the emergency, and these actions are not categorically excluded, the Responsible Official will consult with the SEO to determine the appropriate level of NEPA compliance. If continuation of the emergency actions will reasonably result in significant environmental impacts, the SEO will consult with the CEQ to ensure compliance with 40 CFR 1506.11 as soon as is reasonable.