The hearing record in a proceeding consists of all transcripts of hearings, conferences, arguments and other proceedings on the record and of all exhibits identified, offered, admitted or denied admission at hearing or prehearing conference. Workpapers, requests for discovery, answers to discovery and other documents filed with the Commission Secretary and served on the parties, whether or not discussed at hearing, are not part of the hearing records unless introduced as exhibits at hearing. The Commission or an individual Commissioner may add to the hearing record by reference to any document in the Commission Secretary's official file, but only after notifying the parties of that intention and giving them reasonable opportunity to object, review, examine, and rebut or contest the document.
Idaho Admin. Code r. 31.01.01.283