D.C. Mun. Regs. tit. 15, § 1499
1499.1 When used in this chapter, the following terms and phrases shall have the meaning ascribed:
Affected Utility - an affected utility is any utility regulated by the Commission which is a party to, or participates in, any proceeding.
Contractor - a contractor is any person, partnership, association, corporation, or other entity who supplies the Commission or OPC with services.
Proceeding - a proceeding is any administrative action, process, adjudication, or investigation pending before, or initiated by, the Commission or any member.
SOURCE: Final Rulemaking published at 33 DCR 893, 897 (February 14, 1986).