---
kind: "section"
citation: "40 C.F.R. § 63.7680"
title: "40"
number: "63.7680"
heading: "What is the purpose of this subpart?"
url: "https://uscodex.org/cfr/40/63.7680"
---

# §63.7680. What is the purpose of this subpart?


This subpart establishes national emission standards for hazardous air pollutants (NESHAP) for iron and steel foundries. This subpart also establishes requirements to demonstrate initial and continuous compliance with the emissions limitations, work practice standards, and operation and maintenance requirements in this subpart.


## Notes

### Source

Source: 69 FR 21923, Apr. 22, 2004, unless otherwise noted.

### Authority

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

### Source

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