43 CFR § 3192.15
May cooperative agreements be terminated?
June 11, 2020
(a) Cooperative agreements may be terminated at any time if all parties agree to the termination in writing.
(b) BLM may terminate an agreement without Tribal or State agreement if the—
(1) Tribe or State fails to carry out the terms of the agreement; or
(2) Agreement is no longer needed.
(c) A Tribe may unilaterally terminate an agreement after notifying BLM. For a unilateral termination, the agreement terminates 60 days after the Tribe notifies BLM.