---
kind: "section"
citation: "40 C.F.R. § 63.11405"
title: "40"
number: "63.11405"
heading: "What definitions apply to this subpart?"
url: "https://uscodex.org/cfr/40/63.11405"
---

# §63.11405. What definitions apply to this subpart?


The terms used in this subpart are defined in §§ [63.1101](/cfr/40/63.1101.md) and [63.1103(f)(2)](/cfr/40/63.1103.md?p=f-2).


## Notes

### Source

Source: 72 FR 38904, July 16, 2007, unless otherwise noted.

### Authority

Authority: 42 U.S.C. 7401 et seq.

### Source

Source: 57 FR 61992, Dec. 29, 1992, unless otherwise noted.