Sec. 33. (a) An agency shall maintain an official record of each proceeding under this chapter.
(b) The agency record of the proceeding consists only of the following:
(1) Notices of all proceedings.
(2) Any prehearing order.
(3) Any motions, pleadings, briefs, petitions, requests, and intermediate rulings.
(4) Evidence received or considered.
(5) A statement of matters officially noticed.
(6) Proffers of proof and objections and rulings on them.
(7) Proposed findings, requested orders, and exceptions.
(8) The record prepared for the administrative law judge or for the ultimate authority or its designee under sections 28 through 31 of this chapter, at a hearing, and any transcript of the record considered before final disposition of the proceeding.
(9) Any final order, nonfinal order, or order on rehearing.
(10) Staff memoranda or data submitted to the administrative law judge or a person presiding in a proceeding under sections 28 through 31 of this chapter.
(11) Matters placed on the record after an ex parte communication.
(c) Except to the extent that a statute provides otherwise, the agency record described by subsection (b) constitutes the exclusive basis for agency action in proceedings under this chapter and for judicial review of a proceeding under this chapter.