D.C. Mun. Regs. tit. 3, § 3704
3704.1 A full investigation regarding any alleged violation of the Act, and Chapters 30 - 37 of this title, shall commence upon a finding of reasonable cause by the Director.
3704.2 Within ten (10) days after initiation of a full investigation, the Director shall notify, in writing, the person (respondent), who is the subject of the full investigation.
3704.3 Notification to the respondent shall consist of the following:
3704.4 The full investigation shall be conducted by evidence gathered and explored by the following:
3704.5 The Director may require any person to submit in writing certain reports and answers to questions, as prescribed by the Director, relating to the administration and enforcement of the Act, and Chapters 30 - 37 of this title.
3704.6 Any person required by the Director to submit in writing certain reports or to answer questions, pursuant to § 3704.5, shall submit the reports or answers, within seven (7) calendar days after receipt of the request.
3704.7 All submissions of reports or answers, pursuant to § 3704.6, shall be made under oath; provided, that the person is not represented by counsel.
3704.8 Within ninety (90) days of receipt of any complaint, the Director shall perform one (1) of the following acts:
3704.9 The Director may seek, upon a showing of good cause, an extension of time as reasonably necessary to complete an investigation.
SOURCE: Final Rulemaking published at 45 D.C. Reg. 3161, 3205-06 (May 22, 1998) and
amended at 53 D.C. Reg. 3242-3243 (April 21, 2006).