---
kind: "section"
citation: "40 C.F.R. § 63.9982"
title: "40"
number: "63.9982"
heading: "What is the affected source of this subpart?"
url: "https://uscodex.org/cfr/40/63.9982"
---

# §63.9982. What is the affected source of this subpart?

- (a) This subpart applies to each individual or group of two or more new, reconstructed, or existing affected source(s) as described in paragraphs [(a)(1)](#a-1) and [(2)](#a-2) of this section within a contiguous area and under common control.
  - (1) The affected source of this subpart is the collection of all existing coal- or oil-fired EGUs, as defined in [§ 63.10042](/cfr/40/63.10042.md), within a subcategory.
  - (2) The affected source of this subpart is each new or reconstructed coal- or oil-fired EGU as defined in [§ 63.10042](/cfr/40/63.10042.md).
- (b) **An EGU is new if you commence construction of the coal- or oil-fired EGU after May 3, 2011.**
- (c) An EGU is reconstructed if you meet the reconstruction criteria as defined in [§ 63.2](/cfr/40/63.2.md), and if you commence reconstruction after May 3, 2011.
- (d) **An EGU is existing if it is not new or reconstructed.** An existing electric steam generating unit that meets the applicability requirements after April 16, 2012, due to a change in process (e.g., fuel or utilization) is considered to be an existing source under this subpart.

## Notes

### Amendments

[77 FR 9464, Feb. 16, 2012, as amended at 77 FR 23402, Apr. 19, 2012; 78 FR 24084, Apr. 24, 2013; 85 FR 20850, Apr. 15, 2020]

### Source

Source: 77 FR 9464, Feb. 16, 2012, unless otherwise noted.

### Authority

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

### Source

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

### Amendments

[77 FR 9464, Feb. 16, 2012, as amended at 77 FR 23402, Apr. 19, 2012; 78 FR 24084, Apr. 24, 2013; 85 FR 20850, Apr. 15, 2020]