D.C. Mun. Regs. tit. 26, r. 26-A1908
A petition for reconsideration may be filed by an aggrieved person within ten (10) days after service of the decision by the Director.
Neither the filing nor the granting of that petition shall operate as a stay of a final order unless specifically ordered by the Director.
A stay shall be granted only upon good cause which shall consist of unusual or exceptional circumstances.
The petition shall state briefly and specifically the following:
If the petition is based in whole or in part on new or additional evidence, the new or additional evidence shall be set forth in an affidavit and accompanied by a statement that the petitioner could not with due diligence have known or discovered the new evidence prior to the date the case was presented to the Director for a decision.
The Director may permit or require oral argument upon a petition for reconsideration.
The Director shall grant or deny a petition for reconsideration within ten (10) days after the filing of the petition. Failure of the Director to act within that period shall be deemed a denial of the petition.
D.C. Mun. Regs. tit. 26, r. 26-A1908