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EPA/OAR RIN: 2060-AV71 Publication ID: Spring 2024 
Title: NSPS for the Synthetic Organic Chemical Manufacturing Industry and NESHAP for the Synthetic Organic Chemical Manufacturing Industry and Group I & II Polymers and Resins Industry 
Abstract:

This action addresses the agency's technology review under Clean Air Act (CAA) section 112(d)(6) of the National Emission Standards for Hazardous Air Pollutants (NESHAP) for four subparts in 40 CFR part 63 (subparts F, G, H, and I) which are commonly referred to together as the Hazardous Organic NESHAP (HON) and that apply to the Synthetic Organic Chemical Manufacturing Industry (SOCMI) and to equipment leaks from certain non-SOCMI processes. This action also addresses the agency's technology review of the NESHAP for two subparts in 40 CFR part 63 (subparts U and W) that apply to the Group I and Group II Polymers and Resins industries. The HON standards were most recently updated when the agency conducted a residual risk and technology review (RTR) on December 21, 2006. Similarly, the Group I and II Polymers and Resins NESHAP were most recently updated when the agency conducted its RTR on December 16, 2008, and April 21, 2011. The HON and Group I and II Polymers and Resins NESHAP contain maximum achievable control technology (MACT) standards for controlling emissions of hazardous air pollutants (HAP) from process vents, storage vessels, transfer operations, heat exchange systems, wastewater streams, and equipment leaks. The HAP emitted from these emission sources include, but are not limited to, ethylene oxide, benzene, 1,3-butadiene, vinyl chloride, ethylene dichloride, methanol, hexane, toluene, xylenes, and chloroprene. The agency is also considering risks from the SOCMI source category and from the Neoprene Production source category in the Group I Polymers and Resins NESHAP during its technology review and to ensure the standards continue to provide an ample margin of safety to protect public health. Lastly, this action also addresses the agency's review, under CAA section 111(b)(1)(B), of four New Source Performance Standards (NSPS) in 40 CFR part 60 (subparts III, NNN, RRR, and VVa) for emissions of Volatile Organic Compound (VOC) from SOCMI air oxidation unit processes, SOCMI distillation operations, SOCMI reactor processes, and equipment leaks located at SOCMI sources. These subparts were originally promulgated pursuant to section 111(b) of the CAA on June 29,1990 (subparts III and NNN), August 31, 1993 (subpart RRR), and November 16, 2007 (subpart VVa). The proposed rulemaking was published in the Federal Register on April 25, 2023 (88 FR 25080). In addition, the EPA conducted public outreach activities, including hosting an informational webinar on April 13, 2023, and held a public hearing on the proposed rulemaking on May 16, 2023. The final rulemaking was published in the Federal Register on May 16, 2024 (89 FR 42932). 

 
Agency: Environmental Protection Agency(EPA)  Priority: Section 3(f)(1) Significant 
RIN Status: Previously published in the Unified Agenda Agenda Stage of Rulemaking: Completed Actions 
Major: Yes  Unfunded Mandates: No 
CFR Citation: 40 CFR 63, subpart F    40 CFR 63, subpart G    40 CFR 63, subpart H    40 CFR 63, subpart I    40 CFR 63, subpart U    40 CFR 63, subpart W    40 CFR 60, subpart VVa    40 CFR 60, subpart III    40 CFR 60, subpart NNN    40 CFR 60, subpart RRR     (To search for a specific CFR, visit the Code of Federal Regulations.)
Legal Authority: 42 U.S.C. 7401 to 7671q    42 U.S.C. 7401   
Legal Deadline:
Action Source Description Date
NPRM  Judicial  Texas Environmental Justice Advocacy Services et al. v. EPA, 1:20-cv-03733-RJL consent decree.  12/16/2022 
Final  Judicial  Texas Environmental Justice Advocacy Services et al. v. EPA, 1:20-cv-03733-RJL consent decree.  03/29/2024 
Timetable:
Action Date FR Cite
NPRM  04/25/2023  88 FR 25080   
Final Rule  05/16/2024  89 FR 42932   
Final Rule Effective  07/15/2024 
Additional Information: EPA-HQ-OAR-2022-0730.
Regulatory Flexibility Analysis Required: No  Government Levels Affected: None 
Small Entities Affected: No  Federalism: No 
Included in the Regulatory Plan: No 
RIN Information URL: https://www.epa.gov/stationary-sources-air-pollution/synthetic-organic-chemical-manufacturing-industry-organic-national  
Sectors Affected: 325 Chemical Manufacturing; 3251 Basic Chemical Manufacturing; 325212 Synthetic Rubber Manufacturing 
RIN Data Printed in the FR: No 
Agency Contact:
Andrew Bouchard
Environmental Protection Agency
Office of Air and Radiation
109 T.W. Alexander Drive, Mail Code E143-01,
Research Triangle Park, NC 27709
Phone:919 541-4036
Email: bouchard.andrew@epa.gov

Njeri Moeller
Environmental Protection Agency
Office of Air and Radiation
E143-01, 109 T.W. Alexander Drive,
Research Triangle Park, NC 27711
Phone:919 541-1380
Email: moeller.njeri@epa.gov