---
kind: "section"
citation: "25 C.F.R. § 580.1"
title: "25"
number: "580.1"
heading: "What definitions apply?"
url: "https://uscodex.org/cfr/25/580.1"
---

# §580.1. What definitions apply?


The following definitions apply to this subchapter:

Day: A calendar day.

De novo review: A standard of review where the Commission reviews the matter anew, as if it had not been reviewed by the Chair.

Limited participant: A party who successfully petitions the Commission to participate on a limited basis in an ordinance appeal under [§ 582.5](/cfr/25/582.5.md) of this subchapter.

Preponderance of the evidence: The degree of relevant evidence that a reasonable person, considering the record as a whole, would accept as sufficient to find that a contested fact is more likely to be true than untrue.

Presiding official: The individual who presides over the hearing and issues the recommended decision under [part 584](/cfr/25/part584.md). This individual shall not be under the direct control or supervision of the Commission, nor subject to influence by the Chair or the Commission.

Proceeding: All or part of an appeal heard by a presiding official or the Commission, and decided by the Commission.

Summary proceeding: Ordinance appeals and management contract and amendment appeals are summary proceedings.


## Notes

### Authority

Authority: 25 U.S.C. 2706, 2713, 2715.

### Source

Source: 77 FR 58945, Sept. 25, 2012, unless otherwise noted.