; (ii) the criteria used under subsection (b) for selecting the project for a grant; and (iii) a description of how the project meets such criteria. (g) Appropriations required An obligation or administrative commitment may be made under this section only when amounts are appropriated for such purpose. (h) Grant administration The Secretary may withhold up to 1 percent of the total amount made available to carry out this section for program oversight and management, including providing technical assistance and project planning guidance. (i) Regional planning guidance The Secretary may withhold up to half a percent of the total amount made available to carry out this section to facilitate and provide guidance for regional planning processes. (j) Availability Amounts made available to carry out this section shall remain available until expended. (k) Grant conditions Except as specifically provided in this section, the use of any amounts appropriated for grants under this section shall be subject to the grant conditions under section 22905, except that the domestic buying preferences of section 24305(f) shall apply to grants provided to Amtrak in lieu of the requirements of section 22905(a). (l) Definitions In this section: (1) Applicant The term applicant means— (A) a State; (B) a group of States; (C) an Interstate Compact; (D) a public agency or publicly chartered authority established by 1 or more States; (E) a political subdivision of a State; or (F) Amtrak, acting on its own behalf or under a cooperative agreement with 1 or more States. (2) Capital project The term capital project means— (A) acquisition, construction, replacement, rehabilitation, or repair of major infrastructure assets or equipment that benefit intercity rail passenger transportation, including tunnels, bridges, stations, track, electrification, grade crossings, passenger rolling stock, and other assets, as determined by the Secretary; (B) projects that ensure service can be maintained while existing assets are rehabilitated or replaced