(a) During the period in which the proceeding has an active status in the Department, a copy of the transcript and exhibits shall be kept on file in the office of the hearing clerk, where it shall be available for examination during official hours of business. Thereafter said transcript and exhibits shall be made available by the hearing clerk for examination during official hours of business after prior request and reasonable notice to the hearing clerk.

(b) Transcripts of hearings shall be made available to any person at actual cost of duplication.