25 CFR § 162.545
How will BIA enforce removal requirements in a WSR lease?
February 24, 2021
(a) We may take appropriate enforcement action to ensure removal of the permanent improvements and restoration of the premises at the lessee's expense:
(1) In consultation with the tribe, for tribal land or, where feasible, with Indian landowners for individually owned Indian land; and
(2) Before or after expiration, termination, or cancellation of the lease.
(b) We may collect and hold the performance bond until removal and restoration are completed.