; (2) any funds that have been appropriated pursuant to section 7 but not expended, including any investment earnings on funds that have been appropriated pursuant to such section, shall immediately revert to the general fund of the Treasury; and (3) any funds contributed by the State pursuant to subsection (c) of section 7 but not expended shall be returned immediately to the State. (c) Extension The expiration date set forth in subsection (b) may be extended if the Navajo Nation, the State, and the United States (acting through the Secretary) agree that an extension is reasonably necessary. 9. Waivers and releases (a) In General (1) Waiver and release of claims by the Nation and the United States acting in its capacity as trustee for the Nation Subject to the retention of rights set forth in subsection (c), in return for confirmation of the Navajo water rights and other benefits set forth in the agreement and this Act, the Nation, on behalf of itself and the members of the Nation (other than members in their capacity as allottees), and the United States, acting as trustee for the Nation and members of the Nation (other than members in their capacity as allottees), are authorized and directed to execute a waiver and release of— (A) all claims for water rights within Utah based on any and all legal theories that the Navajo Nation or the United States acting in its trust capacity for the Nation, asserted, or could have asserted, at any time in any proceeding, including to the general stream adjudication, up to and including the enforceability date, except to the extent that such rights are recognized in the agreement and this Act