Integrated Iron and Steel Manufacturing: National Emission Standards for Hazardous Air Pollutants
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Rule Summary
This rule establishes national emission standards for hazardous air pollutants (NESHAP) for integrated iron and steel manufacturing facilities. The final standards establish emission limitations for hazardous air pollutants (HAP) emitted from new and existing sinter plants, blast furnaces, and basic oxygen process furnace (BOPF) shops. The final standards will implement section 112(d) of the Clean Air Act (CAA) by requiring all major sources to meet HAP emission standards reflecting application of the maximum achievable control technology (MACT).
The HAP emitted by integrated iron and steel manufacturing facilities include metals (primarily manganese and lead with small quantities of other metals) and trace amounts of organic HAP (such as polycyclic organic matter, benzene, and carbon disulfide). Exposure to these substances has been demonstrated to cause adverse health effects, including chronic and acute disorders of the blood, heart, kidneys, reproductive system, and central nervous system.
Rule History
03/31/2025 - Final Rule; Partial Stay: Integrated Iron & Steel Manufacturing Facilities Technology Review (90 FR 14207)
08/14/2024 - Response Letter Granting Reconsideration of the II&S Amendments (pdf)
04/03/2024 - Final Rule: Integrated Iron & Steel Manufacturing Facilities (89 FR 23294)
09/14/2023 - Proposed Rule; Extension of Comment Period: Integrated Iron & Steel Manufacturing Facilities (88 FR 63047)
07/31/2023 - Proposed Rule: Integrated Iron & Steel Manufacturing Facilities (88 FR 49402)
07/13/2020 - Final Rule: Integrated Iron & Steel Manufacturing Residual Risk & Technology Review (85 FR 42074)
08/16/2019 - Proposed Rule: Integrated Iron & Steel Manufacturing Facilities Residual Risk & Technology Review (84 FR 42704)
07/13/2006 - Final Rule: Integrated Iron & Steel Manufacturing Facilities (71 FR 39579)
08/30/2005 - Proposed Rule; Amendments: Integrated Iron & Steel Manufacturing (70 FR 51306)
05/20/2003 - Final Rule: Integrated Iron & Steel Manufacturing (68 FR 27646)
07/13/2001 - Proposed Rule: Integrated Iron & Steel Manufacturing (66 FR 36836)
Additional Resources
Final Rule Resources - Integrated Iron & Steel Technology Review:
- March 2024 - Final Rule - Fact Sheet (pdf)
- March 2024 - RIA for the Final Rule (pdf)
- UFIP Costs, Emissions and Emissions Reductions (xlsx)
- UPL Calculations (zip)
- Fenceline Cr Delta C Calculations (zip)
Proposed Rule Resources - Integrated Iron & Steel Technology Review:
- August 2023 - II&S Speaker List (pdf)
- July 2023 - Redline regulation text for the Proposed Amendments to Air Toxics Standards for Integrated Iron and Steel Manufacturing (pdf)
- July 2023 - Fact Sheet: Proposed Amendments to Air Toxics Standards for Integrated Iron and Steel Manufacturing (pdf)
- May 2023 - Section 114 ICR Questionnaire Responses (zip)
Final Rule Resources - Integrated Iron & Steel Residual Risk & Technology Review:
- May 2020 - Fact sheet for the final RTR
Proposed Rule Resources - Integrated Iron & Steel Residual Risk & Technology Review:
- August 2019 - Fact sheet for the proposed RTR
Other Resources Related to Integrated Iron & Steel
- September 2012 - Available and Emerging Technologies for Reducing Greenhouse Gas Emissions from the Iron and Steel Industry
- September 2002 - Economic Impact Analysis of Final Integrated Iron and Steel NESHAP
- January 2001 - Background Information for Proposed Standards Final Report
- January 2001 - Fact Sheet
View the supporting documents in the docket folder to find additional related documents to the rules.