(a) Interlocutory review by the Board of a ruling by the administrative judge during the course of the proceeding is disfavored and will be permitted only in circumstances where:

(1) The ruling involves an important question of law or policy about which there is substantial ground for difference of opinion; and

(2) An immediate review of the ruling by the Board will materially advance the completion of the proceeding, or denial will cause undue harm to a party or the public.

(b) The administrative judge may, on motion of a party or on their own motion, certify an interlocutory ruling to the Board for its immediate consideration. Any such certification shall explain the basis on which the administrative judge concluded that the standards for interlocutory review have been met. If the Board nevertheless determines that the certification does not meet those standards it may decline to accept the certification.

(c) A motion for certification to the Board of an interlocutory ruling by the administrative judge shall be filed within 10 days after service of the ruling upon the parties. The motion shall include arguments in support of both the certification and the determination to be made by the Board. Responses, if any, shall be filed within 10 days after service of the motion.

(d) The grant or denial of a motion for certification of an interlocutory ruling shall not be appealable. The administrative judge shall promptly bring a denial of such a motion, and the reasons therefor, to the attention of the Board. If, upon its consideration of the motion and the underlying record, the Board believes that interlocutory review is warranted, it may grant the motion sua sponte.

(e) Upon its acceptance of a ruling of the administrative judge for interlocutory review, the Board shall issue an order setting forth the procedures that will be followed in the conduct of that review.

(f) Unless otherwise directed by the Board, the stay of any proceedings during the pendency of either a motion for certification or an interlocutory review itself shall be within the discretion of the administrative judge.

(g) The denial of a motion for certification does not affect the right of the parties to challenge interlocutory rulings in the course of the review by the Board of initial or recommended decisions.