D.C. Mun. Regs. tit. 16, r. 16-1404
The Board, after accepting a claim for arbitration, shall determine the composition of the arbitration panel.
The Board, in the notice of acceptance, shall give each party the names of the arbitrators of the proposed panel and information on the background of each of the arbitrators.
Each party to the claim shall have five (5) days to accept or to reject the proposed single member or three (3) member panel.
Each party may reject a proposed panel or single member twice; the third rejection shall be accepted only for good cause explained in writing.
A notice of rejection of a proposed panel shall be in writing and delivered to the DCRA or the Board's designee, either in person or by certified mail.
The Board shall convene the proposed panel within seven (7) days from the date the name(s) of the arbitrators listed in the proposed panel is mailed to the parties, unless as provided in § 1404.3 a notice of rejection of the proposed panel has been received by the Board.
The third rejection shall be the final opportunity for the parties to reject a proposed panel. The Board shall convene a panel thereafter.
D.C. Mun. Regs. tit. 16, r. 16-1404