29 CFR § 1612.10 - Recordkeeping requirements.
(a) In the case of any meeting or portion(s) thereof to be closed to public observation under the provisions of this part, the following records shall be maintained by the Executive Secretary of the agency:
(1) The certification of the Legal Counsel pursuant to § 1612.9 of this part;
(3) A complete electronic recording adequate to record fully the proceedings of each meeting closed to the public observation, except that in a meeting closed pursuant to paragraph (h) or (j) of § 1612.4, the agency may maintain minutes in lieu of a recording. Such minutes shall fully, and clearly describe all matters discussed and shall provide a full and accurate summary of any actions taken, and the reasons therefor, including a description of each of the views expressed on any item and the record of any roll call vote. All documents considered in connection with any item shall be identified in the minutes.
(b) If the agency has determined that the meeting or portion(s) thereof may properly be closed to the public, the electronic recording or minutes shall not be made available to the public until such future time, if any, as it is determined by the Commission upon request, that the reasons for closing the meeting no longer pertain; Provided, however, that any separable portion of a recording or minutes will be made promptly available to the public if that portion does not contain information properly withheld under § 1612.4.
(c) The agency shall maintain a copy of the electronic recording or minutes for a period of two years after the meeting, or until one year after the conclusion of the proceeding to which the meeting relates, whichever occurs later.