Code of Federal Regulations Title 43. Public Lands:  Interior § 43.3452.1–3 Acceptance

The effective date of the lease relinquishment shall, upon approval by an authorized officer, be the date on which the lessee filed the lease relinquishment. No relinquishment shall be approved until the authorized officer determines that the relinquishment will not impair the public interest, that the accrued rentals and royalties have been paid and that all the obligations of the lessee under the regulations and terms of the lease have been met.