D.C. Mun. Regs. tit. 17, r. 17-3320
The board may issue subpoenas to compel witnesses to appear and testify or to produce books, records, papers, or documents on its own motion or upon the request of a party.
The board may require a party requesting a subpoena to demonstrate the relevancy of and need for the subpoena.
The board shall issue subpoenas in the name of the Mayor of the District of Columbia. A subpoenaed witness, other than one employed by the District Government, shall be entitled to a reasonable fee established by the Director, but the fee may not be paid in advance.
In case of contumacy by or refusal to obey a subpoena issued by a board to any person, a board may refer the matter to the Superior Court of the District of Columbia and request an order by that court to require the person to appear and give testimony or produce books, papers, or other evidence bearing on the hearing.
D.C. Mun. Regs. tit. 17, r. 17-3320