D.C. Mun. Regs. tit. 3, § 5502
5502.1 The parties shall be given sufficient opportunity to prepare for the hearing.
5502.2 The Board shall send a notice of hearing to the party or parties involved which shall:
(a) Provide the time, date, and location of the hearing;
(b) Reference applicable statutes, rules, or regulations;
(c) State the purpose of the hearing;
(d) Advise the party or parties that they may be represented by counsel or other representative of their choosing; and
(e) Advise the party or parties that they may bring witnesses.
SOURCE: Final Rulemaking published at 60 DCR 747 (January 25, 2013).