; (G) the Committee on Energy and Commerce of the House of Representatives; (H) the Committee on Transportation and Infrastructure of the House of Representatives; (I) the Committee on Natural Resources of the House of Representatives; and (J) the Committee on Oversight and Accountability of the House of Representatives. (3) Covered mine site The term covered mine site means the land, water, and surrounding watersheds where extraction, beneficiation, or processing of hardrock ores or minerals occurred, but has been discontinued, including discontinued temporarily. (4) Indian country The term Indian country has the meaning given the term in section 1151 of title 18, United States Code. (5) Navajo Nation abandoned uranium mine site The term Navajo Nation abandoned uranium mine site means an abandoned uranium covered mine site on land of the Navajo Nation. (6) Office The term Office means the Office of Mountains, Deserts, and Plains established by subsection (b)(1). (7) Regional Office The term Regional Office means a Regional Office of the Environmental Protection Agency. (b) Establishment (1) In general There is established within the Office of Land and Emergency Management of the Environmental Protection Agency the Office of Mountains, Deserts, and Plains. (2) Director The Office shall be headed by a Director, to be appointed by the Administrator (or a designee). (c) Purposes The purposes of the Office shall be— (1) to coordinate with the headquarters of the Environmental Protection Agency, Regional Offices, and stakeholders response actions of the Environmental Protection Agency at a covered mine site, including a covered mine site in Indian country (as defined in section 1151 of title 18, United States Code), in accordance with Federal law; (2) to establish and disseminate best practices for covered mine site response actions, including identifying— (A) innovative technologies and reuse approaches that support and make progress toward those response actions; and (B) waste storage and disposal solutions