Section 308.28 - Interlocutory review(a)General rule. The Board of Directors may review a ruling of the administrative law judge prior to the certification of the record to the Board of Directors only in accordance with the procedures set forth in this section and § 308.23 .(b)Scope of review. The Board of Directors may exercise interlocutory review of a ruling of, the administrative law judge if the Board of Directors finds that: (1) The ruling involves a controlling question of law or policy as to which substantial grounds exist for a difference of opinion;(2) Immediate review of the ruling may materially advance the ultimate termination of the proceeding;(3) Subsequent modification of the ruling at the conclusion of the proceeding would be an inadequate remedy; or(4) Subsequent modification of the ruling would cause unusual delay or expense.(c)Procedure. Any request for interlocutory review shall be filed by a party with the administrative law judge within ten days of his or her ruling and shall otherwise comply with § 308.23 . Any party may file a response to a request for interlocutory review in accordance with § 308.23(d) . Upon the expiration of the time for filing all responses, the administrative law judge shall refer the matter to the Board of Directors for final disposition.(d)Suspension of proceeding. Neither a request for interlocutory review nor any disposition of such a request by the Board of Directors under this section suspends or stays the proceeding unless otherwise ordered by the administrative law judge or the Board of Directors.