D.C. Mun. Regs. tit. 10-B, § 2025
2025.1 The official record of a disposition hearing shall include all of the following, if applicable:
2025.2 The Agency shall introduce into evidence any related documents, exhibits, or testimony viewed or considered by the Board prior to the issuance of notice under §2016.1 and not introduced by any party. These materials shall be made a part of the official record.
2025.3 The record will be closed following the disposition hearing; Provided, that the record may be kept open for a stated period for the receipt of specific exhibits or information as directed by the presiding officer or Board.
2025.4 The official record shall be the sole and exclusive basis for decision by the Board except to the extent that official notice may be taken of a fact as provided in §2024.
SOURCE: Final Rulemaking published at 19 DCR 539, 564 (February 8, 1973).