Section 170.471 - How are projects administered?(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.(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.(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) 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) The approving agency must consult with the affected Tribe and the entity having maintenance responsibility.(3) A change that exceeds the limits of available funding may be made only with the approving agency's consent.