---
kind: "section"
citation: "40 C.F.R. § 63.1620"
title: "40"
number: "63.1620"
heading: "Am I subject to this subpart?"
url: "https://uscodex.org/cfr/40/63.1620"
---

# §63.1620. Am I subject to this subpart?

- (a) You are subject to this subpart if you own or operate a new or existing ferromanganese and/or silicomanganese production facility that is a major source or is co-located at a major source of hazardous air pollutant emissions.
- (b) You are subject to this subpart if you own or operate any of the following equipment as part of a ferromanganese and/or silicomanganese production facility:
  - (1) Electric arc furnace;
  - (2) Casting operations;
  - (3) Metal oxygen refining (MOR) process;
  - (4) Crushing and screening operations;
  - (5) **Outdoor fugitive dust sources.**
- (c) A new affected source is any of the equipment listed in [paragraph (b)](#b) of this section for which construction or reconstruction commenced after June 30, 2015.
- (d) Table 1 of this subpart specifies the provisions of [subpart A](/cfr/40/subpartA.md) of this part that apply to owners and operators of ferromanganese and silicomanganese production facilities subject to this subpart.
- (e) If you are subject to the provisions of this subpart, you are also subject to title V permitting requirements under 40 CFR part [70](/cfr/40/part70.md) or [71](/cfr/40/part71.md), as applicable.
- (f) **Emission standards in this subpart apply at all times.**

## Notes

### Amendments

[80 FR 37390, June 30, 2015]

### Source

Source: 64 FR 27458, May 20, 1999, unless otherwise noted.

### Authority

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

### Source

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

### Amendments

[80 FR 37390, June 30, 2015]