G/TBT/N/USA/1809/Add.1  
 
5 May 2022  
(22-3528) Page: 1/2 
Committee on Technical Barriers to Trade  Original: English  
 
 
NOTIFICATION  
Addendum  
The following communication , dated  5 May 2022, is being circulated at the request of the delegation 
of the United States of America . 
 
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Title:  Protection of Stratospheric Ozone: Listing of HFO-1234yf Under the Significant New 
Alternatives Policy Program for Motor Vehicle Air Conditioning in Nonroad Vehicles and Servicing 
Fittings for Small Refrigerant Cans  
 
Reason for Addendum:  
[ ] Comment period changed - date:   
[X] Notified measure adopted - date: 3 June 2022  
[X] Notified measure published - date: 4 May 2022  
[X] Notified measure enters into force - date: 3 June 2022  
[X] Text of final measure available from1:  
https://www.govinfo.gov/content/pkg/FR -2022-05-04/html/2022 -08923.htm  
https://www.govinfo.gov/content/pkg/FR -2022-05-04/pdf/2022 -08923.pdf  
https://members.wto.org/crnattachments/2022/TBT/USA/final_measure/22_3255_00_
e.pdf 
[ ] Notified measure withdrawn or revoked - date:  
Relevant symbol if measure re -notified:   
[ ] Content or scope of notified measure changed  and text available from1:  
New deadline for comments (if applicable):   
[ ] Interpretive guidance issued and text available from1:  
[ ] Other:  
 
Description:  TITLE: Protection of Stratospheric Ozone: Listing of HFO -1234yf Under the Significant 
New Alternatives Policy Program for Motor Vehicle Air Conditioning in Nonroad Vehicles and Servicing 
Fittings for Small Refrigerant Cans  
AGENCY: Environmental Protection Agency (EPA)  
ACTION: Final rule  
SUMMARY: Pursuant to the EPA's Significant New Alternatives Policy program, this action lists the 
refrigeran t 2,3,3,3 -tetrafluoroprop -1- ene, also known as HFO -1234yf or R -1234yf, as acceptable, 
 
1 This information can be provided by including a website address, a pdf attachment, or other 
information on where the text of the final /modified  measure and/or interpretive guidance can be obtained.  G/TBT/N/USA/1809/Add.1  
 
- 2 - 
 
  subject to use conditions, in the motor vehicle air conditioning end -use for certain types of newly 
manufactured nonroad (also called off -road) vehicles, which includes some vehicles that are also 
considered heavy - duty vehicles. EPA is also adopting the current versions of the industry safety 
standards SAE J639, SAE J1739, and SAE J2844 by incorporating them by reference into the use 
conditions for the listings in nonroa d vehicles and previous listings for certain onroad vehicles 
covered in final rules issued separately in March 2011 and December 2016. In addition, EPA is 
requiring unique servicing fittings for use with small refrigerant cans (two pounds or less) of 2,3,3 ,3- 
tetrafluoroprop -1-ene that are used to service onroad and nonroad vehicles. Finally, EPA is adding 
a reference to the Agency's regulations under the Toxic Substances Control Act for 2,3,3,3 - 
tetrafluoroprop -1-ene for the listings in nonroad vehicles an d previous listings for certain onroad 
vehicles.  
DATES: This final rule is effective on 3 June 2022. The incorporation by reference of certain 
publications listed in the rule is approved by the Director of the Federal Register as of 3 June 2022.  
This final  rule and the proposed rule notified as G/TBT/N/USA/1809  are identified by Docket Number 
EPA-HQ-OAR-2021-0347. The Docket Folder is available on Regulations.gov at 
https://www.regulations.gov/docket/EPA -HQ-OAR-2021-0347/document  and provides access to 
primary and supporting documents as well as comments received. Documents are also accessible 
from Regulations.gov  by searching the Docket Number.  
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