D.C. Mun. Regs. tit. 3, § 3703
3703.1 A preliminary investigation shall entail an inquiry by the Director to determine whether there is reasonable cause to believe that a violation has occurred.
3703.2 Preliminary investigations may be initiated by any one (1) of the following means:
3703.3 A preliminary investigation conducted by OCF shall be strictly investigatory, non-adversarial, and non-adjudicatory.
3703.4 Within thirty (30) days of initiation of a preliminary investigation, the Director shall determine whether a full investigation is necessary.
3703.5 Within ten (10) days after initiation of a preliminary investigation, the Director shall notify, in writing, the person (respondent) who is the subject of the preliminary investigation.
3703.6 Notification to the respondent shall consist of the following:
SOURCE: Final Rulemaking published at 45 DCR 3161, 3204-05 (May 22, 1998); as amended by Final Rulemaking published at 60 DCR 1402 (February 8, 2013); as amended by Final Rulemaking published at 60 DCR 11864 (August 16, 2013).