You must submit your decommissioning application upon the earliest of the following dates:

(a) 2 years before the expiration of your lease.

(b) 90 days after completion of your commercial activities on a commercial lease.

(c) 90 days after completion of your approved activities under a limited lease on a ROW grant or RUE grant.

(d) 90 days after cancellation, relinquishment, or other termination of your lease or grant.