; and (2) subject to any terms and conditions determined to be necessary by the Secretary. 303. Designation of potential wilderness (a) Designation In furtherance of the purposes of the Wilderness Act ( 16 U.S.C. 1131 et seq.), the following areas in the State are designated as potential wilderness areas: (1) Certain Federal land managed by the Forest Service, comprising approximately 4,238 acres, as generally depicted on the map entitled Chinquapin Wilderness and Potential Wilderness—Proposed and dated July 16, 2018. (2) Certain Federal land administered by the National Park Service, compromising approximately 31,000 acres, as generally depicted on the map entitled Redwood National Park Potential Wilderness—Proposed and dated August 21, 2017. (3) Certain Federal land managed by the Forest Service, comprising approximately 8,961 acres, as generally depicted on the map entitled Siskiyou Wilderness Addition and Potential Wilderness—Proposed and dated July 24, 2018. (4) Certain Federal land managed by the Forest Service, comprising approximately 405 acres, as generally depicted on the map entitled South Fork Trinity River Wilderness and Potential Wilderness—Proposed and dated February 22, 2017. (5) Certain Federal land managed by the Forest Service, comprising approximately 1,237 acres, as generally depicted on the map entitled Trinity Alps Wilderness Additions and Potential Wilderness—Proposed and dated July 18, 2018. (6) Certain Federal land managed by the Forest Service, comprising approximately 4,282 acres, as generally depicted on the map entitled Yolla Bolly-Middle Eel Wilderness Additions and Potential Wilderness—Proposed and dated June 7, 2018. (7) Certain Federal land managed by the Forest Service, comprising approximately 1,165 acres, as generally depicted on the map entitled Yuki Wilderness Addition and Potential Wilderness—Proposed and dated February 15, 2017. (b) Management Except as provided in subsection (c) and subject to valid existing rights, the Secretary shall manage the potential wilderness