; the longest-lived trees that provide the most shade over the longest period of time; the healthiest and most vigorous trees with the greatest potential for crown-growth in plantations and in natural stands adjacent to plantations; and all mature hardwoods, when practicable. (7) Wildland-urban interface The term wildland-urban interface has the meaning given the term by section 101 of the Healthy Forests Restoration Act of 2003 ( 16 U.S.C. 6511 ). (b) Establishment Subject to valid existing rights, there is established the South Fork Trinity-Mad River Restoration Area, comprising approximately 729,089 acres of Federal land administered by the Forest Service and approximately 1,280 acres of Federal land administered by the Bureau of Land Management, as generally depicted on the map entitled South Fork Trinity-Mad River Restoration Area—Proposed and dated July 3, 2018, to be known as the South Fork Trinity-Mad River Restoration Area . (c) Purposes The purposes of the restoration area are to— (1) establish, restore and maintain fire-resilient forest structures containing late successional forest structure characterized by large trees and multistoried canopies, as ecologically appropriate; (2) protect late successional reserves; (3) enhance the restoration of Federal lands within the restoration area; (4) reduce the threat posed by wildfires to communities within the restoration area; (5) protect and restore aquatic habitat and anadromous fisheries; (6) protect the quality of water within the restoration area; and (7) allow visitors to enjoy the scenic, natural, cultural, and wildlife values of the restoration area. (d) Management (1) In general The Secretary shall manage the restoration area— (A) in a manner consistent with the purposes described in subsection (c); (B) in a manner that— (i) in the case of the Forest Service, prioritizes restoration of the restoration area over other nonemergency vegetation management projects on the Six Rivers and Shasta-Trinity national forests