(a) If counsel representing a witness appears in connection with a safety investigation, counsel shall state on the record all other persons or entities counsel represents in that investigation.

(b) When counsel does represent more than one person or entity in a safety investigation, counsel shall inform the Investigating Officer(s) and each client of counsel's possible conflict of interest in representing that client.

(c) When an Investigating Officer(s), or the Board, as the case may be, in consultation with the Board's General Counsel, has concrete evidence that the presence of an attorney representing multiple interests would obstruct or impede the safety investigation, the Investigating Officer(s) or the Board may prohibit that attorney from being present during testimony.

(d) The Board shall issue a written statement of the reasons supporting a decision to exclude counsel under this section within five working days following exclusion. The Board shall also delay the safety investigation for a reasonable period of time to permit retention of new counsel.