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  1. Home
  2. Hazardous Air Pollutants: Ethylene Oxide

Final Rule to Strengthen Standards for Synthetic Organic Chemical Plants and Polymers and Resins Plants

Alert
  • 3/12/25 -- Trump Administration Announces Reconsideration of Air Rules Regulating American Energy, Manufacturing, Chemical Sectors (NESHAPs)
  • National Emission Standards for Hazardous Air Pollutants (NESHAP) Powering the Great American Comeback Fact Sheet (pdf) (139.06 KB)

April 9, 2024, the U.S. Environmental Protection Agency (EPA) announced a set of final rules that will significantly reduce emissions of toxic air pollution from chemical plants, including the potent air toxics ethylene oxide (EtO) and chloroprene. The reductions dramatically reduce the number of people with elevated air toxics-related cancer risks in communities surrounding the plants that use those two chemicals.

Regulatory Documents

  • Final Rule
  • Regulatory Impact Analysis for the Final Rule (pdf) (1.35 MB)
  • Residual Risk Assessment for the Synthetic Organic Chemical Manufacturing Source Category
  • Residual Risk Assessment for the Polymers & Resins I Neoprene Production Source Category

Fact Sheets, Infographic and Presentation

  • Fact Sheet: Overview of the Final Rule (pdf) (287.64 KB)
    • Hoja informativa (pdf) (187.89 KB)
    • ​ TỜ THÔNG TIN (pdf) (242.41 KB)
  • Fact Sheet: Key Things to Know About the Final Rule (pdf) (192.91 KB)
    • Aspectos más importantes (pdf) (82.21 KB)
    • Những điều quan trọng cần biết (pdf) (114.38 KB)
  • Infographic: EPA’s Air Toxics Rules for the Synthetic Organic Chemical Manufacturing and Polymers & Resins Industries (pdf) (54.75 MB)
  • Overview Presentation: EPA's Final Rules for the Synthetic Organic Chemical Manufacturing Industry and Group I & II Polymers and Resins Industry (pdf) (711.33 KB)

Additional Documents

  • List of facilities covered by National Emissions Standards for Hazardous Air Pollutants for Synthetic Organic Chemical Plants and Group I and Group II Polymers and Resins Plants

Documents from Proposal

  • Proposed Rule 
  • Regulatory Impact Analysis for the Proposal
  • Fact Sheet on EPA's Community Risk Assessment and Risk Based Demographic Assessment

Web Pages for Individual Air Toxics Rules Included in the Final Action 

  • Synthetic Organic Chemical Manufacturing Industry: Organic National Emission Standards for Hazardous Air Pollutants (NESHAP) - 40 CFR 63 Subparts F,G,H,I

  • Group I Polymers and Resins: National Emission Standards for Hazardous Air Pollutants (NESHAP)

  • Group 2 Polymers and Resins: Epoxy Resins Production and Non-Nylon Polyamides: National Emission Standards for Hazardous Air Pollutants (NESHAP)

Hazardous Air Pollutants: Ethylene Oxide

  • EPA Actions To Reduce Risk
  • Ethylene Oxide (EtO) Explained
    • Our Current Understanding
    • EtO Risk and Your Health
    • Addressing and Learning About EtO
  • EtO Community Engagement
  • Federal Partnerships on EtO
  • EtO Additional Questions
Contact Us About Ethylene Oxide
Contact Us to ask a question, provide feedback, or report a problem.
Last updated on March 12, 2025
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