Group I Polymers and Resins: National Emission Standards for Hazardous Air Pollutants (NESHAP)
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Rule Summary
In the production of elastomers, a variety of organic hazardous air pollutants (HAP) are used as monomers or process solvents: Styrene, n-hexane, 1,3-butadiene, acrylonitrile, methyl chloride, hydrogen chloride, carbon tetrachloride, chloroprene, and toluene. Some of these pollutants are considered to be mutagens and carcinogens, and all can cause reversible or irreversible toxic effects following exposure.
See the following regulations for more details.
Rule History
05/16/2024 - 2024 Final Rule
06/26/2023 - 2023 Public Comment Period Extension - Federal Register Notice
04/25/2023 - 2023 Proposed Rule
04/21/2011 – 2011 Final Rule (pdf) (564 KB)
10/21/2010 – 2010 Proposed Rule & Supplemental Notice of Proposed Rulemaking (pdf) (536 KB)
12/16/2008 – 2008 Final Rule (pdf) (191 KB)
12/12/2007 – 2007 Proposed Rule (pdf) (214 KB)
07/16/2001 – 2001 Final Rule; technical amendments (pdf) (214 KB)
06/19/2000 – 2000 Final Rule (pdf) (657 KB)
05/07/1999 – 1999 Withdrawal of Amendment in Direct Final Rule (pdf) (114 KB)
03/09/1999 – 1999 Proposed Rule (40 CFR Part 63) (pdf) (1,311 KB)
03/09/1999 – 1999 Proposed Rule (40 CFR Parts 60 and 63) (pdf) (118 KB) & 1999 Direct Final Rule (pdf) (118 KB)
07/15/1997 – 1997 Final Rule; correcting amendments (pdf) (121 KB)
01/14/1997 – 1997 Proposed Rule (pdf) (120 KB) & 1997 Direct Final Rule (pdf) (127 KB)
09/05/1996 – 1996 Final Rule (pdf) (721 KB)
06/12/1995 - 1995 Proposed Rule (pdf) (223 KB)
Additional Resources
Documents from the 2024 Final Rule
- 04/09/2024 - Regulatory Impact Analysis (pdf) (1,380 KB)
- 04/30/2024 - Residual Risk Assessment for Polymers & Resins I Neoprene Source Category (pdf)
- 04/09/2024 - Overview Fact Sheet (pdf) (288 KB)
- 04/09/2024 - Key Things to Know Fact Sheet (pdf) (193 KB)
- 04/09/2024 - List of Facilities that EPA Anticipates Will be Covered by the Final Rule (pdf) (373 KB)
Documents from the 2023 Proposal
Earlier Documents
- Fact Sheets- Final Air Toxics Rule for Group I Polymers and Resins in Elastomer Production
- Economic Impact Analysis for the Polymers and Resins I NESHAP
- View the supporting documents for the 2011 rule in the docket folder to find additional related documents to this rule.
- View the supporting documents for the previous rules in the docket folder to find additional related documents to this rule.