Not later than 1 year after December 20, 2018, the Secretary concerned shall develop a categorical exclusion (as defined in section 1508.4 of title 40, Code of Federal Regulations (or a successor regulation)) for covered vegetation management activities carried out to protect, restore, or improve habitat for greater sage-grouse or mule deer.
If the categorical exclusion developed under subsection (b) is used to implement a covered vegetative management activity in an area within the range of both greater sage-grouse and mule deer, the covered vegetative management activity shall protect, restore, or improve habitat concurrently for both greater sage-grouse and mule deer.
Before commencing any covered vegetation management activity that is covered by the categorical exclusion under subsection (b), the Secretary concerned shall develop a long-term monitoring and maintenance plan, covering at least the 20-year period beginning on the date of commencement, to ensure that management of the treated area does not degrade the habitat gains secured by the covered vegetation management activity.
A covered vegetation management activity that is covered by the categorical exclusion under subsection (b) may not exceed 4,500 acres.
A covered vegetation management activity carried out on National Forest System land that is covered by the categorical exclusion under subsection (b) shall be limited to areas designated under section 6591a(b) of this title, as of December 20, 2018.