50 CFR § 29.141
Will the Service charge me a fee for access?
July 17, 2020
(a) The Service will charge you a fee if you require use of Service-administered lands or waters outside the boundary or scope of your oil and gas right:
(1) If you require new use of Service-administered lands or waters, we will charge you a fee based on the fair market value of that use.
(2) Fees under this section will not be charged for access within the scope of your oil and gas right or access to your right that is otherwise provided for by law.
(b) If access to your oil and gas right is across an existing refuge road, we may charge a fee according to a posted fee schedule.