(a) When we receive an assignment that meets the requirements of this subpart, we will notify the parties of the date we receive it. If our approval is required, we have 30 days from receipt of the executed assignment, proof of required consents, and required documentation to approve or disapprove the assignment. Our determination whether to approve the assignment will be in writing and will state the basis for our approval or disapproval.

(b) If we do not meet the deadline in this section, the lessee or Indian landowners may take appropriate action under § 162.463.