43 C.F.R. § 2933.21
When are fees charged for Recreation Use Permits?
You must pay a fee for individual or group recreational use if the area is posted to that effect. You may also find fee information at BLM field offices or BLM Internet websites.
You must pay a fee for individual or group recreational use if the area is posted to that effect. You may also find fee information at BLM field offices or BLM Internet websites.