D.C. Mun. Regs. tit. 16, § 1521
1521.1 Hearings shall be recorded by electronic or stenographic means, but transcriptions shall be made only if specifically requested by one (1) of the parties or other persons, or the Office of Adjudication.
1521.2 The testimony and exhibits, together with all papers filed in the proceeding, and materials or acts not appearing in evidence but with respect to which judicial notice is taken, shall constitute the exclusive record for the Decision and Order.
1521.3 The cost of preparation of a transcript of the record or a portion thereof shall be borne equally by all parties (and other persons) requesting the copy or copies.
SOURCE: Final Rulemaking published at 33 DCR 6176, 6187 (October 10, 1986).