D.C. Mun. Regs. tit. 1, § 2807
2807.1 Except when a District agency is redesignated or ceases to exist, after proper notice and an opportunity to be heard, an Administrative Law Judge may substitute a person or entity for a named party or may add parties to a case.
2807.2 Anyone who has an interest in the subject matter of a pending case and contends that the representation of his or her interest is inadequate may file a motion to intervene. After proper notice and an opportunity to be heard, an Administrative Law Judge may allow an interested person or entity to intervene.
2807.3 If an Administrative Law Judge grants a motion for leave to intervene, the intervenor may participate to the extent allowed by the Administrative Law Judge.
2807.4 No person or entity may intervene as a co-Petitioner with the District in any enforcement action where the District seeks a fine unless a statute allows it.
2807.5 A person or entity to which the District has properly delegated a governmental function may request to intervene, but may not be substituted for the District.
2807.6 In the case where a District agency is redesignated or ceases to exist, the Clerk shall substitute the successor agency for the predecessor agency, consistent with the relevant statutory authority.
SOURCE: Final Rulemaking published at 51 DCR 6399 (June 25, 2004); as amended by Final Rulemaking published at 51 DCR 8595 (September 3, 2004); as amended by Final Rulemaking published at 57 DCR 12541 (December 31, 2010); as amended by Final Rulemaking published at 63 DCR 6556 (April 29, 2016); as amended by Final Rulemaking published at 71 DCR 013913 (November 15, 2024).