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EPA/AR RIN: 2060-AP11 Publication ID: Fall 2010 
Title: Protection of Stratospheric Ozone: New Substitute in the Motor Vehicle Air Conditioning Sector Under the Significant New Alternatives Policy (SNAP) Program 
Abstract: In this action, the Agency proposed to list the refrigerant HFO-1234yf as an acceptable substitute in motor vehicle air conditioning (MVAC) systems, and outlines the conditions necessary for its safe use. This refrigerant has very low global warming potential. Current MVAC refrigerants are highly potent greenhouse gases. 
Agency: Environmental Protection Agency(EPA)  Priority: Other Significant 
RIN Status: Previously published in the Unified Agenda Agenda Stage of Rulemaking: Final Rule Stage 
Major: No  Unfunded Mandates: No 
CFR Citation: 40 CFR 82, subpart G     (To search for a specific CFR, visit the Code of Federal Regulations.)
Legal Authority: 42 USC 7671k   
Legal Deadline:  None
Timetable:
Action Date FR Cite
NPRM  10/19/2009  74 FR 53445   
NPRM Reopening Public Comment Period  12/28/2009  74 FR 68558   
NPRM Reopening of Public Comment Period  02/09/2010  75 FR 6338   
Final Action  12/00/2010    
Additional Information: EPA publication information: NPRM - http://www.regulations.gov/search/Regs/home.html#documentDetail?R=0900006480a44c7a; EPA Docket information: EPA-HQ-OAR-2008-0664
Regulatory Flexibility Analysis Required: No  Government Levels Affected: None 
Small Entities Affected: No  Federalism: No 
Included in the Regulatory Plan: No 
International Impacts: This regulatory action will be likely to have international trade and investment effects, or otherwise be of international interest.
RIN Information URL: http://www.epa.gov/ozone/snap/refrigerants/lists/mvacs.html  
Sectors Affected: 336391 Motor Vehicle Air-Conditioning Manufacturing 
RIN Data Printed in the FR: No 
Agency Contact:
Margaret Sheppard
Environmental Protection Agency
Air and Radiation
1200 Pennsylvania Avenue NW, Mail Code 6205T,
Washington, DC 20460
Phone:202 343-9163
Fax:202 343-2338
Email: sheppard.margaret@epa.gov

Yaidi Cancel
Environmental Protection Agency
Air and Radiation
6205J,
Washington, DC 20460
Phone:202 343-9512
Fax:202 343-2338
Email: cancel.yaidi@epa.gov