; or (2) amends or modifies the application of any existing law (including regulations) applicable to land under the jurisdiction of the Secretary. C Conservation 131. Designation of wilderness (a) In general In accordance with the Wilderness Act ( 16 U.S.C. 1131 et seq. ), the following areas in the State are designated as wilderness areas and as components of the National Wilderness Preservation System: (1) Black butte river wilderness Certain Federal land managed by the Forest Service in the State, comprising approximately 11,155 acres, as generally depicted on the map entitled Black Butte Wilderness—Proposed and dated May 15, 2020, which shall be known as the Black Butte River Wilderness . (2) Chanchelulla wilderness additions Certain Federal land managed by the Forest Service in the State, comprising approximately 6,382 acres, as generally depicted on the map entitled Chanchelulla Wilderness Additions—Proposed and dated May 15, 2020, which is incorporated in, and considered to be a part of, the Chanchelulla Wilderness designated by section 101(a)(4) of the California Wilderness Act of 1984 ( 16 U.S.C. 1132 note; Public Law 98–425 ; 98 Stat. 1619). (3) Chinquapin wilderness Certain Federal land managed by the Forest Service in the State, comprising approximately 27,164 acres, as generally depicted on the map entitled Chinquapin Wilderness—Proposed and dated May 15, 2020, which shall be known as the Chinquapin Wilderness . (4) Elkhorn ridge wilderness addition Certain Federal land managed by the Bureau of Land Management in the State, comprising approximately 37 acres, as generally depicted on the map entitled Proposed Elkhorn Ridge Wilderness Additions and dated February 2, 2022, which is incorporated in, and considered to be a part of, the Elkhorn Ridge Wilderness designated by section 6(d) of the Northern California Coastal Wild Heritage Wilderness Act ( 16 U.S.C. 1132 note; Public Law 109–362