25 CFR §170.471

1. (a)When a Tribe carries out a TTP project, the project will be administered in accordance with a self-determination contract, self-governance agreement, Program Agreement or other appropriate agreement and this regulation.
2. (b)If BIA or FHWA discovers a problem during an on-site monitoring visit, BIA or FHWA must promptly notify the Tribe and, if asked, provide technical assistance.
3. (c)Only the State-licensed professional engineer of record whose name and professional stamp appear on the PS&E or who is responsible for the overall project design may change a TTP project's PS&E during construction.
   1. (1)The original approving agency must review each substantial change. The approving agency is the Federal, Tribal, State, or local entity with PS&E approval authority over the project.
   2. (2)The approving agency must consult with the affected Tribe and the entity having maintenance responsibility.
   3. (3)A change that exceeds the limits of available funding may be made only with the approving agency's consent.