Sec. 343.9. Who may be present at hearing; authorization of representative

(a) The respondent operator of a facility, its representative or representatives, counsel or other representatives of the department, witnesses of both parties and any person who may be called by the hearing officer may be present at the hearing, together with such other persons as may be admitted by the hearing officer in his or her discretion. Upon his or her own motion, or upon the motion of either party, the hearing officer may exclude potential witnesses and those who have given prior testimony from the hearing during the testimony of other witnesses.

(b) An individual, other than an attorney, representing a facility shall have an appropriate written authorization signed by the proprietor of the facility or by an officer, member or director of an operator of a facility when the operator is not a natural person.