An official website of the United States government.

We've made some changes to EPA.gov. If the information you are looking for is not here, you may be able to find it on the EPA Web Archive or the January 19, 2017 Web Snapshot.

Acetal Resins, Acrylic & Modacrylic Fibers, Carbon Black, Hydrogen Fluoride, Polycarbonate, Ethylene, Spandex & Cyanide Chemical Manufacturing: NESHAP for Source Categories, Generic Maximum Achievable Control Technology Standards (40 CFR 63, Subpart YY)

On this page:

Rule Summary

This regulation sets standards for multiple source categories including: acetyl resins production, hydrogen fluoride production, polycarbonate, ethylene and cyanide chemical production. The rule includes requirements that are source category specific, and requirements that apply to all source categories that are regulated under the generic maximum achievable control technology (GMACT) standards subpart (e.g., general recordkeeping, reporting, compliance, operation, and maintenance requirements).

See the regulations below for more details.

Rule History

03/12/2020 - Final Rule (Ethylene Production Risk and Technology Review - pre-publication version)

10/23/2019 - Public Hearing Notice (Proposed Ethylene Production Risk and Technology Review)

10/09/2019 - Proposed Rule (Ethylene Production Risk and Technology Review)

10/08/2014 - Final Rule (Acrylic and Modacrylic Fibers, Polycarbonates)

01/09/2014 - Proposed Rule (Acrylic and Modacrylic Fibers, Polycarbonates)

12/16/2008 - Final Rule (Acetal Resins, Hydrogen Fluoride)

12/12/2007 - Proposed Rule (Acetal Resins, Hydrogen Fluoride)

04/13/2005 - Direct Final Rules; Amendments & Proposed Rules; Amendments (Ethylene, Acrylic and Modacrylic Fibers)

02/10/2003 - CFR Correction  (definition of process wastewater)

07/12/2002 - Final Rule; Amendments (Cyanide Chemicals Manufacutring, Carbon Black, Ethylene, Spandex)

06/07/2002 - Direct Final Rule; Amendments & Proposed Rule; Amendments (Acetal Resins, Acrylic and Modacrylic Fibers, Hydrogen Fluoride, Polycarbonates)

11/02/2001 - Final Rule; Amendments (Acetal Resins, Acrylic and Modacrylic Fibers, Hydrogen Fluoride, Polycarbonates)

12/06/2000 - Proposed Rule; Amendments (Cyanide Chemicals Manufacturing, Carbon Black, Ethylene, Spandex)

12/29/1999 - Correction (Table 5 to § 63.1103(d) pertaining to Polycarbonates)

11/22/1999 - Final Rule; Amendments & Final Rule; Corrections & Proposed Amendments (Acetal Resins, Acrylic and Modacrylic Fibers, Hydrogen Fluoride, Polycarbonates)

06/29/1999 - Final Rule (Acetal Resins, Acrylic and Modacrylic Fibers, Hydrogen Fluoride, Polycarbonates)

10/14/1998 - Proposed Rule and Notice of Public Hearing (Acetal Resins, Acrylic and Modacrylic Fibers, Hydrogen Fluoride, Polycarbonates)

Additional Resources

Fact Sheet: Final Amendments to Air Toxics Standards for Ethylene Production

How to Comment on the Proposed National Emission Standards for Hazardous Air Pollutants: Generic Maximum Achievable Control Technology Standards Residual Risk and Technology Review for Ethylene Production

Public hearing in Washington, DC, on November 6, 2019

Fact Sheet:  Proposed National Emission Standards for Hazardous Air Pollutants: Generic Maximum Achievable Control Technology Standards Residual Risk and Technology Review for Ethylene Production

Ethylene Production Maximum Achievable Control Technology (MACT) Compliance Manual

DRAFT Carbon Black RTR Emissions Risk Modeling File - November 2019(4 MB, 11/7/2019) - If you have any questions about this file, please contact Korbin Smith at smith.korbin@epa.gov or 919-541-2416.