25 C.F.R. § 1000.1470
(a) In carrying out a construction project under the Act, a Tribe/Consortium shall assume responsibility for the completion of the construction project and of a facility that is usable for the purpose for which the Tribe/Consortium received funding, including day-to-day on-site management and administration of the project, in accordance with the negotiated funding agreement or construction project agreement. However, Tribes/Consortia are not required to perform beyond the amount of funds provided. For example, a Tribe/Consortium may encounter unforeseen circumstances during the term of a funding agreement or construction project agreement. If this occurs, options available to the Tribe/Consortium include, but are not limited to: