D.C. Mun. Regs. tit. 20, r. 20-6604
A person named in a directive, order, proposed order, action or proposed action of the Department under §§ 6210.7, 6601, 6602, or 6603 may appeal in accordance with this section.
Before or in lieu of requesting a hearing under § 6605, a person named in a Department directive, order, or action may make an informal appeal in the manner and by the date stated in the directive, order, or action by providing orally or in writing any information or material that would support a change in or withdrawal of the Department's directive, order, or action.
If the matter is not resolved under § 6604.2, the aggrieved person may appeal to the Deputy Director of the Department's Environmental Services Administration in accordance with § 5500.5.
If the matter is not resolved under § 6604.3, the aggrieved person may appeal the decision of the Deputy Director of the Environmental Services Administration to the Director of the Department in accordance with § 5500.5.
Appeals under §§ 6604.3 and 6604.4 must be in writing and present all information and material that the aggrieved person wishes to present for consideration on appeal.
When considering an appeal, the Deputy Director or the Director may stay the effect of a decision or action being appealed pending determination of the appeal.
Unless stayed by the Deputy Director or the Director, the original decision or action remains in effect during pendency of the appeal.
Any person adversely affected or aggrieved by a decision of the Director may request a hearing in accordance with § 6605.
D.C. Mun. Regs. tit. 20, r. 20-6604