43 CFR § 4110.3 - Changes in grazing preference.
(1) Manage, maintain, or improve rangeland productivity;
(2) Assist in making progress toward restoring ecosystems to properly functioning condition;
(3) Conform with land use plans or activity plans; or
(4) Comply with the provisions of subpart 4180 of this part.
(c) Before changing grazing preference, the authorized officer will undertake the appropriate analysis as required by the National Environmental Policy Act of 1969 (NEPA) (42 U.S.C. 4321 et seq.). Under NEPA, the authorized officer will analyze and, if appropriate, document the relevant social, economic, and cultural effects of the proposed action.