D.C. Mun. Regs. tit. 14, § 3817
3817.1 The Commission may issue a subpoena requiring the production of documents or the attendance and testimony of witnesses, or a subpoena may be issued by the Commission on its own initiative.
3817.2 A subpoena issued by the Commission shall:
3817.3 A subpoena may be served in the same manner and by any person authorized by the civil rules of the Superior Court of the District of Columbia; provided, that no witness fees are required.
SOURCE: Notice of Final Rulemaking published at 33 DCR 1336, 1347 (March 7, 1986); as amended by Final Rulemaking published at 68 DCR 012634 (December 3, 2021).