---
kind: "section"
citation: "40 C.F.R. § 63.2132"
title: "40"
number: "63.2132"
heading: "What parts of my plant does this subpart cover?"
url: "https://uscodex.org/cfr/40/63.2132"
---

# §63.2132. What parts of my plant does this subpart cover?

- (a) This subpart applies to each new, reconstructed, or existing “affected source” that produces Saccharomyces cerevisiae at a nutritional yeast manufacturing facility.
- (b) The affected source is the collection of equipment used in the manufacture of the nutritional yeast species Saccharomyces cerevisiae. This collection of equipment includes fermentation vessels (fermenters), as described in [paragraph (c)](#c) of this section. The collection of equipment used in the manufacture of the nutritional yeast species Candida utilis (torula yeast) is not part of the affected source.
- (c) The emission limitations in this subpart apply to fermenters in the affected source that meet all of the criteria listed in paragraphs [(c)(1)](#c-1) and [(2)](#c-2) of this section.
  - (1) The fermenters are “fed-batch” as defined in [§ 63.2192](/cfr/40/63.2192.md).
  - (2) The fermenters are used to support one of the last three fermentation stages in a production run (i.e., third-to-last stage, second-to-last stage, and last stage), which may be referred to as “stock, first generation, and trade,” “seed, semi-seed, and commercial,” or “CB4, CB5, and CB6” stages.
- (d) The emission limitations in this subpart do not apply to flask, pure-culture, yeasting-tank, or any other set-batch (as defined in [§ 63.2192](/cfr/40/63.2192.md)) fermentation, and they do not apply to any operations after the last dewatering operation, such as filtration.
- (e) The emission limitations in Table 1 to this subpart do not apply to fermenters during the production of specialty yeast (defined in [§ 63.2192](/cfr/40/63.2192.md)).
- (f) An affected source is a “new affected source” if you commenced construction of the affected source after October 19, 1998, and you met the applicability criteria in [§ 63.2131](/cfr/40/63.2131.md) at the time you commenced construction.
- (g) An affected source is “reconstructed” if it meets the criteria for reconstruction as defined in [§ 63.2](/cfr/40/63.2.md).
- (h) **An affected source is “existing” if it is not new or reconstructed.**

## Notes

### Source

Source: 82 FR 48178, Oct. 16, 2017, unless otherwise noted.

### Authority

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

### Source

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