D.C. Code § 50-921.90
The Mayor, pursuant to Title I of the District of Columbia Administrative Procedure Act, approved October 21, 1968 (82 Stat. 1204; D.C. Official Code § 2-501 et seq.), shall issue rules to implement the provisions of this subchapter.
May 21, 2002, D.C. Law 14-137, § 11cc
Mar. 22, 2023, D.C. Law 24-335, § 2(b)