If a proceeding is a contested case within the meaning of the D.C. Administrative Procedure Act (D.C. Official Code § 2-502(8) ), the following restrictions shall apply:
The prohibitions set forth in § 1720.1 shall apply upon the filing of a protest against an application for an original, transfer, substantial change or renewal license, or upon the issuance of notice to appear for a show cause hearing.
For purpose of this section, "ex parte communication" does not include an inquiry regarding the Board's procedure or practice, or a request for a status report on a matter, proceeding, or notice of a meeting or hearing.
D.C. Mun. Regs. tit. 23, r. 23-1720