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EPA/OAR RIN: 2060-AK26 Publication ID: Fall 2021 
Title: Protection of Stratospheric Ozone: Listing of Substitutes for Ozone-Depleting Substances: N-Propyl Bromide 

This proposed rule would propose a determination as to whether n-propyl bromide (nPB) is an acceptable substitute for Class I and Class II ozone depleting substances used in aerosol solvent and adhesives end uses. If found acceptable, this would provide industry with another alternative to solvents with higher ozone depletion potential. An acceptability determination could include specific conditions on the use of nPB as a solvent, such as limiting the specific applications in which it may be used to those with low emissions and requiring exposure limits that would be sufficient to mitigate risk and that are consistent with industry practices. Any conditions would be for the purpose of ensuring that nPB is used in a manner that is as safe and environmentally protective as other available substitutes. OSHA has not set a specific exposure standard for nPB. If we determine that nPB cannot be used safely in a specific end use, as compared with other substitutes available for that end use, we would find it unacceptable.

Agency: Environmental Protection Agency(EPA)  Priority: Other Significant 
RIN Status: Previously published in the Unified Agenda Agenda Stage of Rulemaking: Proposed Rule Stage 
Major: No  Unfunded Mandates: No 
CFR Citation: 40 CFR 82   
Legal Authority: 42 U.S.C. 7414    42 U.S.C. 7601    42 U.S.C. 7671 to 7671q Clean Air Act   
Legal Deadline:  None
Action Date FR Cite
NPRM  06/03/2003  68 FR 33283   
Second NPRM  10/02/2003  68 FR 56809   
Third NPRM  05/30/2007  72 FR 30168   
Fourth NPRM  10/00/2022 
Final Rule  12/00/2023 
Additional Information: Split from RIN 2060-AJ58
Regulatory Flexibility Analysis Required: No  Government Levels Affected: Federal 
Small Entities Affected: No  Federalism: No 
Energy Effects: Statement of Energy Effects planned as required by Executive Order 13211.  Included in the Regulatory Plan: No 
RIN Information URL:  
Sectors Affected: 238320 Painting and Wall Covering Contractors; 326150 Urethane and Other Foam Product (except Polystyrene) Manufacturing 
RIN Data Printed in the FR: No 
Agency Contact:
Margaret Sheppard
Environmental Protection Agency
Office of Air and Radiation
1200 Pennsylvania Avenue NW, Mail Code 6205T,
Washington, DC 20460
Phone:202 343-9163
Fax:202 343-2338

Chenise Farquharson
Environmental Protection Agency
Office of Air and Radiation
1200 Pennsylvania Avenue NW, Mail Code 7405M,
Washington, DC 20460
Phone:202 564-7768
Fax:202 564-4775