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 areas designated by subsection (a) (referred to in this section as potential wilderness areas ) as wilderness until the potential wilderness areas are designated as wilderness under subsection (d). (c) Ecological restoration (1) In general For purposes of ecological restoration (including the elimination of nonnative species, removal of illegal, unused, or decommissioned roads, repair of skid tracks, and any other activities necessary to restore the natural ecosystems in a potential wilderness area and consistent with paragraph (2)), the Secretary may use motorized equipment and mechanized transport in a potential wilderness area until the potential wilderness area is designated as wilderness under subsection (d). (2) Limitation To the maximum extent practicable, the Secretary shall use the minimum tool or administrative practice necessary to accomplish ecological restoration with the least amount of adverse impact on wilderness character and resources. (d)