50 CFR § 401.6 - Prosecution of work.
(a) Project work shall be carried through to a state of completion acceptable to the Secretary with reasonable promptness. Failure to render satisfactory performance reports or failure to complete the project to the satisfaction of the Secretary shall be cause for suspension of Federal assistance for the project until the project provisions are satisfactorily met. Federal assistance may be terminated upon determination by the Secretary that satisfactory progress has not been maintained. The Secretary shall have the right to inspect and review work at any time.
(b) Research and development work shall be continuously coordinated by the Cooperator with studies conducted by others to avoid unnecessary duplication.
(c) All work shall be performed in accordance with applicable local laws, except when in conflict with Federal laws or regulations, in which case Federal laws or regulations shall prevail.