25 C.F.R. § 571.2
As used in this subchapter, the following terms have the specified meanings:
Commission's authorized representative means any persons who is authorized to act on behalf of the Commission for the purpose of implementing the Act and this chapter.
Day means calendar day unless otherwise specified.
Hearing means that part of a proceeding that involves the submission of evidence to the presiding official, either by oral presentation or written submission.
Party means the Chairman, the respondent(s), and any other person named or admitted as a party to a proceeding.
Person means an individual, Indian tribe, corporation, partnership, or other organization or entity.
Presiding official means a person designated by the Commission who is qualified to conduct an administrative hearing and authorized to administer oaths, and has had no previous role in the prosecution of a matter over which he or she will preside.
Respondent means a person against whom the Commission is seeking civil penalties under section 2713 of the Act.
Violation means a violation of applicable federal or tribal statutes, regulations, ordinances, or resolutions.
25 C.F.R. §571.2