43 C.F.R. § 3213.13 When does my relinquishment take effect?
Title 43 - Public Lands: Interior
If BLM determines you have submitted a complete relinquishment request which meets the requirements of 43 CFR 3213.11 and 3213.12, your relinquishment is effective the day we receive it. However, you and your surety must still: (a) Pay all rents and royalties due before relinquishment; (b) Plug and abandon all wells on the relinquished land; (c) Restore the surface and other resources; and, (d) Comply with the requirements of 43 CFR 3200.4.
Title 43: Public Lands: Interior
PART 3200—GEOTHERMAL RESOURCE LEASING
Subpart 3213—Relinquishment, Termination, Cancellation, and Expiration
§ 3213.13 When does my relinquishment take effect?