D.C. Code § 8-1308

Any person adversely affected by an action taken pursuant to the provisions of this chapter or the rules and regulations promulgated thereto is entitled to a hearing before the Mayor upon filing with the Mayor, within 15 days of the date of such action, a written request for a hearing. Such hearing shall be held in accordance with other contested case procedures under the provisions of the District of Columbia Administrative Procedure Act (§ 2-509). The decision on the appeal shall be final.