No person shall be represented before the Director in any civil penalty matter, or an Administrative Law Judge or the Secretary's designee in a civil penalty hearing, under this subpart except as provided in this section.

(a) Representing oneself. In any proceeding, an individual may appear on his or her own behalf.

(b) Representative. Upon written notice to the Director,

(1) A respondent may be represented by a personal representative. If a respondent wishes to be represented by counsel, such counsel must be an attorney at law admitted to practice before the Supreme Court of the United States, the highest court of any State, commonwealth, possession, or territory of the United States, or the District of Columbia;

(2) A duly authorized member of a partnership may represent the partnership; and

(3) A bona fide officer, director, or employee of a corporation, trust or association may represent the corporation, trust or association.

(c) Director representation. The Director shall be represented by members of the Office of Chief Counsel or any other counsel specifically assigned by the General Counsel.

(d) Conflicts of interest—(1) Conflict of interest in representation. No individual shall appear as representative for a respondent in a proceeding conducted pursuant to this subpart if it reasonably appears that such representation may be materially limited by that representative's responsibilities to a third person, or by that representative's own interests.

(2) Corrective measures. An Administrative Law Judge may take corrective measures at any stage of a proceeding to cure a conflict of interest in representation, including the issuance of an order limiting the scope of representation or disqualifying an individual from appearing in a representative capacity for the duration of the proceeding.