D.C. Code § 48-851.04
§ 48-851.04. Rules.
(a) The Mayor, pursuant to subchapter I of Chapter 5 of Title 2 [ § 2-501 et seq.], shall issue rules to implement the provisions of § 48-851.03 . The rules shall specify safe, secure, and environmentally sound methods for health care facilities to dispose of used and unused pharmaceuticals.
(b) The Mayor, pursuant to subchapter I of Chapter 5 of Title 2 [ § 2-501 et seq.], may issue rules to implement the provisions of § 48-851.02 .