The CSB shall make promptly available to the public the transcript, electronic recording, or minutes of the discussion of any item on the agenda or of any testimony received at a meeting, except for such item, or items, of discussion or testimony as determined by the CSB to contain matters which may be withheld under the exemptive provisions of § 1603.7. Copies of the nonexempt portions of the transcript or minutes, or transcription of such recordings disclosing the identity of each speaker, shall be furnished to any person at the actual cost of transcription or duplication. Requests for transcripts, recordings, or minutes shall be made in writing to the General Counsel of the CSB, 2175 K Street, NW., Suite 400, Washington, DC 20037.