G/TBT/N/USA/116/Rev.1/Add.1  
 
24 August 2021  
(21-6397) Page: 1/2 
Committee on Technical Barriers to Trade  Original: English  
 
NOTIFICATION  
Addendum  
The following communication , dated  24 August 2021 , is being circulated at the request of the 
delegation of the United States of America . 
  
_______________  
 
 
Title: Protection of Stratospheric Ozone: Extension of the Laboratory and Analytical Use Exemption 
for Essential Class I Ozone -Depleting Substances  
 
Reason for Addendum:  
[  ] Comment period changed - date:   
[  ] Notified measure adopted - date:  
[X] Notified measure published - date: 23 August 2021  
[X] Notified measure enters into force - date: 22 September 2021  
[X] Text of final measure available from1:  
https://www.govinfo.gov/content/pkg/FR -2021-08-23/html/2021 -17745.htm  
https://www.govinfo.gov/content/pkg/FR -2021-08-23/pdf/2021 -17745.pdf  
https://members.wto.org/crnattachments/2021/TBT/USA/final_measure/21_5365_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[  ] Notified measure withdrawn or revoked - date:  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 de adline for comments (if applicable):   
[  ] Interpretive guidance issued and text available from1:  
[  ] Other:  
 
Description:  TITLE: Protection of Stratospheric Ozone: Extension of the Laboratory and Analytical 
Use Exemption for Essential Class I Ozone -Depleting Substances  
AGENCY: Environmental Protection Agency  
ACTION: Final rule  
SUMMARY: The Environmental Protection Agency is taking final action to revise regulations 
governing the production and import of class I ozone -depleting substances in the United States to 
indefinitely extend the global essential laboratory and analytical use exemption. This exemption 
currently expires o n 31 December 2021, and this final action allows for continued production and 
import of class I substances in the United States solely for laboratory and analytical uses that have 
 
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/116/Rev.1/Add.1  
 
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  not been identified by the Environmental Protection Agency as nonessential. This final action is taken 
under the Clean Air Act, and is consistent with a decision by the Parties to the Montreal Protocol on 
Substances that Deplete the Ozone Layer to extend the global laboratory and analytical use 
exemption indefinitely beyond 2021. The proposed rule associated with this final action was 
published on 7 August 2020, and we received no adverse comments.  
This final rule is effective on 22 September 2021.  
This final rule and the proposed rule notified as G/TBT/N/USA/116/Rev.1  are identified by Docket 
Number EPA -HQ-OAR-2020-0084. The Docket Folder is available at 
https://www.regulations.gov/docket/EPA -HQ-OAR-2020-0084/document  and provides access t o 
primary and supporting documents as well as comments received. Documents are also accessible 
from Regulations.gov  by searching the Docket Number.  
The proposed rule notified as G/TBT/N/USA/116  is identified by Docket Number EPA -HQ-OAR-2004-
0064. The Docket Folder is available at https://www.regulations.gov/docket/EPA -HQ-OAR-2004-
0064/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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