| Applicability: |
eCFR Subpart AA  [ecfr.gov]
This subpart applies to:
- Affected sources at phosphoric acid manufacturing plants that are Major Sources of HAPs*.
Affected sources:
- Wet-process phosphoric acid process lines;
- Evaporative cooling towers;
- Phosphate rock dryers;
- Phosphate rock calciners;
- Superphosphoric acid process lines;
- Purified phosphoric acid process lines;
- Gypsum dewatering stacks;
- Cooling ponds.
*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.
Not subject to this subpart:
- Research and development facilities.
- Phosphoric acid manufacturing plants considered area sources.
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| Rules apply to small, area sources? |
No |
| Known Sources in NDEE Jurisdiction: |
No
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| Date of Original Final Rule: |
6/10/99 |
| Amendments Dates: |
11/03/2020 - Final Amendment to Phosphoric Acid Manufacturing rule
04/07/2020 - Proposed Amendment to Phosphoric Acid Manufacturing rule
09/13/2017 - Final Reconsideration
11/28/2016 - Reconsideration
08/19/2015 - Final Rule
06/13/2002 - Amendments
06/12/2002 - Amendments
12/17/2001 - Amendments |
| State Regulations (Title 129): |
As of September 28, 2022: Title 129, Chapter 13, Section 2.16
Previously: Title 129, Chapter 28, Section 001.26.
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 63.600 |
| Related Rules: |
Subpart BB - Phosphate Fertilizers Production Plants |
| Regulations and Federal Registers: |
eCFR Subpart AA  [ecfr.gov]
(See attached file: 2A - Fed. Reg. 2020-09-03 - Final Rule.pdf)
(See attached file: 2A - Fed. Reg. 2020-08-07 - Proposed Rule.pdf)
(See attached file: 2A - Fed. Reg. 2017-09-13 - Final Reconsideration.pdf)
(See attached file: 2A - Fed. Reg. 2015-08-19 - Final Rule.pdf)
(See attached file: 2A - Fed. Reg. 2002-06-13 - Final Rule; amendments.pdf)
(See attached file: 2A - Fed. Reg. 2002-06-12 - Final Rule; amendments.pdf)
(See attached file: 2A - Fed. Reg. 2001-12-17 - Direct Final Rule; amendments.pdf)
(See attached file: 2A - Fed. Reg. 1999-06-10 - Final Rule.pdf)
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| Forms: |
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| Important Dates: |
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| FAQs, Fact Sheets, and Rule Summaries: |
EPA's Subpart AA Website  [epa.gov] - Contains federal register notices
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| Presentations, Training and Articles: |
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| Other Information and Resources: |
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| Notes: |
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| Page Last Updated: |
11/1/22 |