(a) A permittee under this subpart who holds a permit for use and occupancy of a cabin or other structure located on public lands in a park area, not under valid existing lease or permit in effect on December 2, 1980, does not have a "valid property or occupancy interest" for purposes of ANILCA section 1110(b) and its implementing regulations.(b) When issuing a permit under this subpart, the Superintendent shall provide for reasonable access which is appropriate and consistent with the values and purposes for which the park area was established.(c) All impacts of the access to a cabin or other structure are deemed to be a part of, and shall be considered in any evaluation of, the effects of a use authorized by a permit issued under this subpart.