(a) Within 15 days after the answer has been filed, the administrative law judge will establish a prehearing conference date for all parties including persons or organizations whose petition requesting party status has not been ruled upon. Written notice of the prehearing conference shall be sent by the administrative law judge.

(b) At the prehearing conference the following matters, among others, shall be considered: (1) Simplification and delineation of the issues to be heard; (2) stipulations; (3) limitation of number of witnesses; and exchange of witness lists; (4) procedure applicable to the proceeding; (5) offers of settlement; and (6) scheduling of the dates for exchange of exhibits. Additional prehearing conferences may be scheduled at the discretion of the administrative law judge, upon his own motion or the motion of a party.