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Phosphoric Acid Manufacturing

Air Toxics Notebook

Phosphoric Acid Manufacturing

Applicability

eCFR Subpart AA [ecfr.gov]

This subpart applies to:

  1. Affected sources at phosphoric acid manufacturing plants that are Major Sources of HAPs*.

Affected sources:

  1. Wet-process phosphoric acid process lines;
  2. Evaporative cooling towers;
  3. Phosphate rock dryers;
  4. Phosphate rock calciners;
  5. Superphosphoric acid process lines;
  6. Purified phosphoric acid process lines;
  7. Gypsum dewatering stacks;
  8. 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:

  1. Research and development facilities.
  2. Phosphoric acid manufacturing plants considered area sources.
Rules apply to small, area sources?
No
Known Sources in NDEE Jurisdiction

No

Date of Original Final Rule
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

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

NESHAP - 40 CFR 63

Subpart BB - Phosphate Fertilizers Production Plants

Regulations and Federal Registers

eCFR Subpart AA [ecfr.gov]

 

291 KB2A - Fed. Reg. 2020-09-03 - Final Rule.pdf
327 KB2A - Fed. Reg. 2020-08-07 - Proposed Rule.pdf
503 KB2A - Fed. Reg. 2017-09-13 - Final Reconsideration.pdf
740 KB2A - Fed. Reg. 2015-08-19 - Final Rule.pdf
169 KB2A - Fed. Reg. 2002-06-13 - Final Rule; amendments.pdf
151 KB2A - Fed. Reg. 2002-06-12 - Final Rule; amendments.pdf
178 KB2A - Fed. Reg. 2001-12-17 - Direct Final Rule; amendments.pdf
395 KB2A - Fed. Reg. 1999-06-10 - Final Rule.pdf
FAQ's, Fact Sheets, and Rules Summaries

EPA's Subpart AA Website [epa.gov] - Contains federal register notices

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