25 CFR § 170.437
If there is no hearing, how must BIA, FHWA, or a Tribe inform the public?
February 24, 2021
(a) When no public hearing for a TTP project is scheduled, the BIA, FHWA, or a Tribe must give adequate notice to the public before project activities are scheduled to begin. The notice should include:
(1) Project location;
(2) Type of improvement planned;
(3) Dates and schedule for work;
(4) Name and address where more information is available; and
(5) Provisions for requesting a hearing.
(b) If the work is not to be performed by the Tribe, BIA will send a copy of the notice to the affected Tribe.