D.C. Mun. Regs. tit. 17, § 102
102.1 If the person concerned does not mail a request for a hearing within the time and in the manner required under §101, the board or commission may, without a hearing, take the action contemplated in the notice.
102.2 The board or commission shall, in writing, inform the person concerned, the Corporation Counsel, and the Director of the action taken under this section.
102.3 If a person who requested a hearing does not appear for the hearing, and no continuance has been or is granted, the board or commission may hear the evidence of the witnesses who do appear, and the board or commission may proceed to consider the matter and render a decision on the basis of evidence before it, in the manner required by this chapter.
SOURCE: Sections 20.3 and 30.3 of Regulation No. 72-3, approved January 28, 1972, 5DD DCRR §§20.3 and 30.3, 18 DCR 436 (February 22, 1972).