; 126 Stat. 4968), the Secretary of Transportation may make grants to the Authority, in addition to the contributions authorized under sections 3, 14, and 17 of the National Capital Transportation Act of 1969 (sec. 9–1101.01 et seq., D.C. Official Code), for the purpose of financing in part the capital and preventive maintenance projects included in the Capital Improvement Program approved by the Board of Directors of the Authority. (b) Use of funds The Federal grants made pursuant to the authorization under this section shall be subject to the following limitations and conditions: (1) The work for which such Federal grants are authorized shall be subject to the provisions of the Compact, including any future amendments to such Compact. (2) Each such Federal grant shall be for 50 percent of the net project cost of the project involved, and shall be provided in cash from sources other than Federal funds or revenues from the operation of public mass transportation systems. Consistent with the terms of the amendment to the Compact, or any future amendments to such Compact, any funds so provided shall be solely from undistributed cash surpluses, replacement or depreciation funds or reserves available in cash, or new capital. (c) Applicability of requirements for mass transportation capital projects receiving funds under federal transportation law Except as specifically provided in this Act, the use of any amounts appropriated pursuant to the authorization under this section shall be subject to the requirements applicable to capital projects for which funds are provided under chapter 53 of title 49, United States Code, except to the extent that the Secretary determines that the requirements are inconsistent with this Act, its purposes, or any subsequent rules or guidance issued pursuant to this Act. (d) Amount There is authorized to be appropriated to the Secretary of Transportation for grants under this section $75,000,000 for each fiscal year through fiscal year 2029. (e) Availability (1) In general Amounts