; (B) not more than $200,000,000 shall be expended in any single fiscal year; (C) in the event that the Secretary chooses to expend such funds in fiscal years 2030, 2031, 2032 or 2033— (i) the total amount for any such fiscal year shall not exceed $150,000,000; and (ii) the Secretary shall, to the greatest extent practicable, make such funds available in a decreasing amount beginning in fiscal year 2030. (3) Authority for WMATA to retain funds In the event that the Authority does not spend the entire amount of funds granted by the Secretary or the Signatories pursuant to this section, the Authority may retain up to 20 percent of the remaining funds and may spend such funds in a subsequent fiscal year. 202. New WMATA compact (a) Purpose The purpose of this section is to establish a means by which the Signatories, with guidance from the Secretary, may collaborate to adopt a succeeding interstate Compact that meets the criteria and other benchmarks set forth in this Act. (b) In general Not less than 90 days after the Metro Reform Board is established pursuant to title I, the Secretary shall establish— (1) parameters and guidelines to which the Signatories shall adhere as they collaborate to adopt a succeeding interstate Compact that meets the criteria and other benchmarks described in this Act; (2) language that meets the criteria described in this section and which shall be incorporated into a succeeding interstate Compact; and (3) a system of goals and metrics by which the Secretary shall be able to determine the extent to which— (A) the Authority, governed by the Metro Reform Board, is making substantial progress with regard to reaching the goals described in section 103; (B) the Signatories are making progress toward complying with this section to amend the interstate Compact