30 CFR § 585.638
What must I do upon completion of my commercial operations as approved in my COP or FERC license?
July 29, 2020
(a) Upon completion of your approved activities under your COP, you must initiate the decommissioning process as set forth in subpart I of this part. You must submit your decommissioning application as provided in §§585.905 and 585.906.
(b) Upon completion of your approved activities under your FERC license, the terms of your FERC license will govern your decommissioning activities.