D.C. Mun. Regs. tit. 15, § 520
SOURCE: Final Rulemaking published at 29 DCR 5130, 5135 (November 19, 1982); as amended by Final Rulemaking published at 34 DCR 1568 (March 6, 1987); as amended by Final Rulemaking published at 68 DCR 6170 (June 11, 2021).