other provision of law, for any project initially funded in fiscal year 2021 with a future phase indicated in the National Park Service 5-Year Line Item Construction Plan, a single procurement may be issued which includes the full scope of the project: Provided further , That the solicitation and contract shall contain the clause availability of funds found at 48 CFR 52.232–18: Provided further , That National Park Service Donations, Park Concessions Franchise Fees, and Recreation Fees may be made available for the cost of adjustments and changes within the original scope of effort for projects funded by the National Park Service Construction appropriation: Provided further , That the Secretary of the Interior shall consult with the Committees on Appropriations, in accordance with current reprogramming thresholds, prior to making any charges authorized by this section. Land acquisition and state assistance (including rescission of funds) Of the unobligated balances from amounts made available for Land Acquisition and derived from the Land and Water Conservation Fund, $2,000,000 is hereby permanently rescinded from projects with cost savings or failed or partially failed projects: Provided , That no amounts may be rescinded from amounts that were designated by the Congress as an emergency requirement pursuant to the Concurrent Resolution on the Budget or the Balanced Budget and Emergency Deficit Control Act of 1985. centennial challenge For expenses necessary to carry out the provisions of section 101701 of title 54, United States Code, relating to challenge cost share agreements, $15,000,000, to remain available until expended, for Centennial Challenge projects and programs: Provided , That not less than 50 percent of the total cost of each project or program shall be derived from non-Federal sources in the form of donated cash, assets, or a pledge of donation guaranteed by an irrevocable letter of credit. Administrative provisions (including transfer of funds) In addition to other uses set forth in section