43 CFR §4120.4

1. (a)When a State Director determines that local conditions require a special rule to achieve improved administration consistent with the objectives of this part, the Director may approve such rules. The rules shall be subject to public review and comment, as appropriate, and upon approval, shall become effective when published in the Federal Register as final rules. Special rules shall be published in a local newspaper.
2. (b)Where the Bureau of Land Management administers the grazing use of other Federal Agency lands, the terms of an appropriate Memorandum of Understanding or Cooperative Agreement shall apply.