Whenever any state agency desires to dispose of records which are not listed on an approved records retention and disposition schedule applicable to such agency, the state agency head shall prepare and submit to the administrator, on forms provided by the administrator, a list of the records sought to be disposed of and a request for approval of their disposition, which list and request shall be referred to the board for action at its next regular or special session. On consideration thereof, the board may approve such disposition thereof as may be legal and proper or may refuse to approve any disposition, and the records as to which such determination has been made may thereupon be disposed of in accordance with the approval of the board.