Section 20. Expiration of authorization and appropriation.
The authorization and appropriation for the additional capital projects itemized in sections 3, 4, 5, 6, 7, 8, 9 and 10 for which construction contracts have not been executed within four years of the effective date of this act shall expire upon such date and shall be considered repealed. The Secretary of the Budget may extend an expired project for up to one year upon written notification of the majority chairman and minority chairman of the Appropriations Committee of the Senate and the majority chairman and minority chairman of the Appropriations Committee of the House of Representatives. Upon expiration of the extension period, an extended project may not be subsequently extended.