Manufacturing of Nutritional Yeast
Air Toxics Notebook
Manufacturing of Nutritional Yeast
Applicability
eCFR Subpart CCCC 
[ecfr.gov]
This subpart applies to:
- Affected sources at nutritional yeast manufacturing facilities that are, is located at, or is part of, Major Sources of HAPs*.
Affected sources:
- Collection of equipment used in the manufacture of nutritional yeast species Saccharomyces cerevisiae, including fermentation vessels (fermenters).
Definition of "Nutritional yeast manufacturing facility":
- A facility that makes yeast for the purpose of becoming an ingredient in dough for bread or any other yeast-raised baked product, or for becoming a nutritional food additive intended for consumption by humans.
- Does not include production of yeast intended for consumption by animals, such as an additive for livestock feed.
*Major Sources of HAPs emit or have the potential to emit:
- ≥ 10 tons/year of any single HAP; or
- ≥ 25 tons/year of total HAPs.
- Area Sources emit less than Major Sources.
Partial Exemptions:
- Emission limitations in this subpart do not apply to:
- Flask fermentation
- Pure-culture fermentation
- Yeasting-tank fermentation
- Any other set-batch fermentation
- Any operations after the last dewatering operation
Rules apply to small, area sources?
No
Known Sources in NDEE Jurisdiction
No
Date of Original Final Rule
Amendments Dates
10/16/2017 - Final Rule
12/28/2016 - Proposed Amendments
04/20/2006 - Amendments
State Regulations
As of September 28, 2022: Title 129, Chapter 13, 002.57
Title 129, Chapter 28, Section 001.53.
Sources are also responsible for ensuring they are in compliance with current federal requirements found for this subpart in the CFR
Federal Regulations
40 CFR 63.2130
Regulations and Federal Registers
[ecfr.gov]FAQ's, Fact Sheets, and Rules Summaries
EPA's Subpart CCCC Website 
[epa.gov] - contains federal register notices and implementation tools
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