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EPA/OAR RIN: 2060-AV29 Publication ID: Fall 2021 
Title: Protection of Stratospheric Ozone: Standards Related to the Manufacture of Class II Ozone-Depleting Substances for Feedstock 

This rulemaking will address byproduct emissions of HFC-23 from the manufacture of class II ozone-depleting substances (ODS) for use as feedstocks. EPA is in the process of completely phasing out production of class II ODS with limited exemptions. Given one of these exemptions includes the manufacture for feedstock and continues indefinitely, EPA would set a limit that would address byproduct emissions of HFC-23 (a substance with a very high global warming potential). EPA is proposing that as compared to the amount of chemical intentionally manufactured on a facility line, the HFC-23 created as a byproduct on the line must be destroyed to an emissions standard using a technology approved by EPA.

Agency: Environmental Protection Agency(EPA)  Priority: Economically Significant 
RIN Status: Previously published in the Unified Agenda Agenda Stage of Rulemaking: Proposed Rule Stage 
Major: Yes  Unfunded Mandates: No 
CFR Citation: 40 CFR 82   
Legal Authority: 42 U.S.C. 7671 to 7671q Clean Air Act   
Legal Deadline:  None
Action Date FR Cite
NPRM  09/29/2021  86 FR 53916   
NPRM Comment Period End  11/15/2021 
Final Rule  02/00/2022 
Additional Information: .
Regulatory Flexibility Analysis Required: No  Government Levels Affected: None 
Small Entities Affected: No  Federalism: No 
Included in the Regulatory Plan: No 
RIN Data Printed in the FR: No 
Agency Contact:
Kirsten Cappel
Environmental Protection Agency
Office of Air and Radiation
Washington, DC 20460
Phone:202 343-9556