Section 162.022 - What are BIA's responsibilities in administering and enforcing leases?(a) Upon written notification from an Indian landowner that the lessee has failed to comply with the terms and conditions of the lease, we will promptly take appropriate action, as specified in §§ 162.364 , 162.464 , and 162.589 . Nothing in this part prevents an Indian landowner from exercising remedies available to the Indian landowners under the lease or applicable law.(b) We will promptly respond to requests for BIA approval of amendments, assignments, leasehold mortgages, and subleases, as specified in subparts C, D, and E.(c) We will respond to Indian landowners' concerns regarding the management of their land.(d) We will take emergency action as needed to preserve the value of the land under § 162.024 .