D.C. Mun. Regs. tit. 23, r. 23-1900
The Board shall receive, at any time during the license period, complaints from any person alleging a violation by a licensee of the Act or this title. Complaints shall be in writing and set forth enough information to allow the Board or its staff to investigate the matter.
Any written complaint shall be kept confidential by the Board to the extent permitted by law, unless the writer specifically states that it may be made public.
All written complaints which identify the complainant by name and address shall be responded to in writing by the Board or its staff within ninety (90) days of receipt of the complaint, and shall advise the complainant of what action the Board or its staff has taken on the matter.
If the complainant has not provided the Board with a telephone number where he or she may be reached for additional information, and the written complaint has set forth insufficient information for the Board to take action, the Board or staff response shall so state.
In addition to written complaints identifying the complainant, any person may make an anonymous complaint in writing to the Board, or orally to any Investigator at ABRA. Anonymous complaints shall be investigated to the best of the Board's ability, but may result in no action being taken if the anonymous complainant fails to provide the Board or the Investigator with adequate information.
D.C. Mun. Regs. tit. 23, r. 23-1900