D.C. Mun. Regs. tit. 18, r. 18-1009
Notice of the action of dismissal by the Examiner shall be given to the parties or mailed to them at their last known addresses.
The dismissal of a demand for hearing shall be final and binding unless vacated.
The action of dismissal shall be in the form of an order by the examiner which shall contain a statement of facts and the reason for the dismissal. No order shall be necessary where all the parties have filed an application for dismissal in writing.
An examiner may, on motion of a party and for good cause shown, vacate any dismissal of a demand for a hearing at any time within thirty (30) days from the date of mailing notice of dismissal of a demand for hearing.
An order containing a statement of facts and the reasons for denial of such motion shall be given to the moving parties or mailed to them at their last known address.
D.C. Mun. Regs. tit. 18, r. 18-1009