; or (iii) to mine, extract, beneficiate, or process minerals; and (B) that, if implemented as proposed by the project sponsor, would be subject to the requirements that— (i) an environmental document be prepared; and (ii) the applicable agency issue an authorization of the activity. (4) Secretary concerned The term Secretary concerned means, as appropriate— (A) the Secretary of Agriculture, with respect to the Forest Service; (B) the Secretary of Energy; (C) the Secretary of the Interior; (D) the Federal Energy Regulatory Commission; (E) the Secretary of the Army, with respect to the Corps of Engineers; and (F) the Secretary of Transportation, with respect to the Maritime Administration and the Pipeline and Hazardous Materials Safety Administration. (b) Applicability (1) In general The project development procedures under this section— (A) shall apply to— (i) all projects for which an environmental impact statement is prepared; (ii) all major projects; and (iii) to the maximum extent practicable, projects described in clause (i) or (ii) for which an authorization is being sought or that are subject to an environmental review process initiated prior to the date of enactment of this Act; (B) may be applied, as requested by a project sponsor and to the extent determined appropriate by the Secretary concerned, to other projects for which an environmental document is prepared; and (C) shall not apply to— (i) any project subject to section 139 of title 23, United States Code; (ii) any project that is a water resources development project of the Corps of Engineers