---
kind: "section"
citation: "40 C.F.R. § 430.81"
title: "40"
number: "430.81"
heading: "Specialized definitions."
url: "https://uscodex.org/cfr/40/430.81"
---

# §430.81. Specialized definitions.


The general definitions, abbreviations, and methods of analysis set forth in [40 CFR 401](/cfr/40/401.md) and [§ 430.01](/cfr/40/430.01.md) of this part shall apply to this subpart.


## Notes

### Authority

Authority: Sections 301, 304, 306, 307, 308, 402, and 501 of the Clean Water Act, as amended, (33 U.S.C. 1311, 1314, 1316, 1317, 1318, 1342, and 1361), and Section 112 of the Clean Air Act, as amended (42 U.S.C. 7412).

### Source

Source: 63 FR 18635, Apr. 15, 1998, unless otherwise noted.