D.C. Mun. Regs. tit. 11-Y, § 505
505.1 Not less than forty (40) days before the public hearing, the Director shall provide notice of the public hearing by:
505.2 The notice of a public hearing on a civil infraction appeal shall include:
505.3 A technical defect in the notice of public hearing that is minor in nature shall not deprive the Board of jurisdiction over the case. If a defect in the notice is alleged and proven, the Board may determine whether to postpone, continue, or hold the public hearing as scheduled based on the following considerations:
(a) The nature and extent of the actual notice received by the parties and the public from all sources;
(b) Attendance or lack thereof at the public hearing; and
(c) The nature and extent of the construction and/or use involved in the appeal.
SOURCE: Final Rulemaking published at 63 DCR 2447, 3500 (March 4, 2016 – Part 2).