Ariz. Admin. Code § 4-35-206
The Board of Directors may, by resolution adopted by a majority of the whole Board, name three or more of its members as an Executive Committee. Such Executive Committee will have and may exercise such powers of the Board of Directors in the management of the operations of the Authority while the Board is not in session as may be provided in the Board's resolution, provided that any such Executive Committee shall not be empowered to take any action which by statute must be taken by the Board of Directors nor to take any action in any manner which would constitute or give rise to a violation of applicable laws of the state of Arizona. A majority of those named to the Executive Committee will constitute a quorum of the Committee, and the Executive Committee may at any time act, subject to the limitations set forth above, by the written consent of a quorum thereof, although not formally convened.
Ariz. Admin. Code § R4-35-206