Section 218.13 - Secretary's authority(a) Nothing in this section shall restrict the Secretary of Agriculture from exercising any statutory authority regarding the protection, management, or administration of National Forest System lands.(b) Projects and activities proposed by the Secretary of Agriculture or the Under Secretary, Natural Resources and Environment, are not subject to the procedures set forth in this part. Approval of projects and activities by the Secretary or Under Secretary constitutes the final administrative determination of the U.S. Department of Agriculture.