43 C.F.R. § 27.9
(a) General. If there appears to be a failure or refusal of any recipient, contractor, or subcontractor to observe or comply substantially with section 403 of Public Law 93-153, or implementing rules, regulations, and orders, compliance may be effected through the use of conciliation conferences, informal hearings, and procedures to cause termination or suspension of or refusal to grant or to continue the permit, or other Federal authorization to which this part applies, or of the contracts to which this part applies, or by any other means authorized by law. Such other means may include, but are not limited to:
(c) Termination of or refusal to grant or to continue the Federal authorization—(1) General. In those instances where a recipient fails or refuses to observe or comply substantially with section 403 of Public Law 93-153 or implementing rules, regulations, and orders, noncompliance at the option of the Secretary, may be grounds for termination, suspension, refusal to grant or continue the Federal authorization.