D.C. Code § 2-1803.02: Right to administrative appeal and costs of appeal.

Except as provided in § 2-1831.16, any person aggrieved by an order of an administrative law judge or attorney examiner issued pursuant to subchapters I and II of this chapter, or the Mayor, may appeal to the reviewing agency specified in § 2-1803.01. The costs of any appeal, including, but not limited to, the expense of providing a transcript of the hearing, shall be borne by the appellant unless excused by the Mayor pursuant to rules issued by the Mayor.