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EPA/AR RIN: 2060-AQ38 Publication ID: Fall 2011 
Title: Revision to Definition of Volatile Organic Compounds--Exclusion of trans 1,3,3,3-tetrafluoropropene and 2,3,3,3-tertrafluoropropene 
Abstract: This action proposes to add trans 1,3,3,3-tetrafluoropropene and 2,3,3,3-tertrafluoropropene to the list of negligibly reactive compounds in the definition of volatile organic compounds. Data indicate that the photochemical reactivity of these compounds is low enough that they can be regarded as negligibly reactive in ozone formation and will not contribute to violations of the ozone national ambient air quality standard. The compound 2,3,3,3-tertrafluoropropene has been identified as a possible substitute for a high global warming compound which is currently used in automobile air conditioners. 
Agency: Environmental Protection Agency(EPA)  Priority: Other Significant 
RIN Status: Previously published in the Unified Agenda Agenda Stage of Rulemaking: Long-Term Actions 
Major: No  Unfunded Mandates: No 
CFR Citation: 40 CFR 51.100(s)   
Legal Authority: 42 USC 7602(s)   
Legal Deadline:  None
Timetable:
Action Date FR Cite
NPRM  10/17/2011  76 FR 64059   
NPRM Comment Period End  11/16/2011    
Final Action  To Be Determined    
Regulatory Flexibility Analysis Required: No  Government Levels Affected: State 
Small Entities Affected: No  Federalism: No 
Included in the Regulatory Plan: No 
Sectors Affected: 238220 Plumbing, Heating, and Air-Conditioning Contractors; 326150 Urethane and Other Foam Product (except Polystyrene) Manufacturing 
RIN Data Printed in the FR: No 
Agency Contact:
Dave Sanders
Environmental Protection Agency
Air and Radiation
C539-01,
Research Triangle Park, NC 27711
Phone:919 541-3356
Fax:919 541-0824
Email: sanders.dave@epa.gov

Tom Coda
Environmental Protection Agency
Air and Radiation
C539-01,
Research Triangle Park, NC 27711
Phone:919 541-3037
Email: coda.tom@epa.gov