Call for Abstentions. Inquire of the commission or council whether any member thereof wishes to abstain from participation in the hearing. Any member then announcing his abstention shall not participate in the hearing, participate in discussion of the question, or vote on the question.
Any member whose participation has been challenged by allegation of bias, prejudgment, personal interest, or partiality or who has been subject to significant ex parte or prehearing contact from proponents or opponents may make a statement in response thereto or in explanation thereof, for the record, and state his decision to abstain or not. This statement shall not be subject to cross-examination, except upon consent of that member, but shall be subject to rebuttal by the proponent or opponent, as appropriate.