; and (ii) completed, to the maximum extent practicable, within three years of the date of acquisition; (C) constructing a temporary road on which motorized vehicles are permitted as part of a vegetation management project carried out in accordance with subsection (e); (D) authorizing the use of motorized vehicles for administrative purposes; or (E) responding to an emergency. (4) Decommissioning of temporary roads (A) Requirement The Secretary shall decommission any temporary road constructed under paragraph (3)(C) not later than 3 years after the date on which the applicable vegetation management project is completed. (B) Definition As used in subparagraph (A), the term decommission means— (i) to reestablish vegetation on a road; and (ii) to restore any natural drainage, watershed function, or other ecological processes that are disrupted or adversely impacted by the road by removing or hydrologically disconnecting the road prism. (e) Timber harvest (1) In general Except as provided in paragraph (2), no harvesting of timber shall be allowed within the conservation management area. (2) Exceptions The Secretary may authorize harvesting of timber in the conservation management area— (A) if the Secretary determines that the harvesting is necessary to further the purposes of the conservation management area; (B) in a manner consistent with the purposes described in subsection (b); and (C) subject to— (i) such reasonable regulations, policies, and practices as the Secretary determines appropriate; and (ii) all applicable laws (including regulations). (f) Grazing The grazing of livestock in the conservation management area, where established before the date of enactment of this Act, shall be permitted to continue— (1) subject to— (A) such reasonable regulations, policies, and practices as the Secretary considers necessary; and (B) applicable law (including regulations)