   
  
G/TBT/N/USA/1611/Add.1  
 
23 March 2021  
(21-2387) Page: 1/2 
Committee on Technical Barriers to Trade  Original: English  
 
 
NOTIFICATION  
Addendum  
The following communication , dated  23 March 2021 , is being circulated at the request of the 
delegation of the United States of America . 
 
_______________  
 
 
Title: Significant New Use Rules on Certain Chemical Substances (20 -4.B) 
 
Reason for Addendum:  
[  ] Comment period changed - date:   
[  ] Notified measure adopted - date:  
[X] Notified measure published - date: 22 March 2021  
[X] Notified measure enters into force - date: 21 May 2021  
[X] Text of final measure available from1:  
https://www.govinfo.gov/content/pkg/FR -2021-03-22/html/2021 -04630.htm  
https://www.govinfo.gov/content/pkg/FR -2021-03-22/pdf/2021 -04630.pdf  
https://members.wto.org/crnattachments/2021/TBT/USA/final_measure/21_2131_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[  ] Notified measure withdrawn or revoked - date:  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:  Significant New Use Rules on Certain Chemical Substances (20 -4.B) 
AGENCY: Environmental Protection Agency (EPA)  
ACTION: Final rule  
SUMMARY: EPA is issuing significant new use rules (SNURs) under the Toxic Substances Control Act 
(TSCA) for chemical substances which were the subject of premanufacture notices (PMNs). This 
action requires persons to notify EPA least 90 days before commenc ing manufacture (defined by 
statute to include import) or processing of any of these chemical substances for an activity that is 
designated as a significant new use by this rule. This action further requires that persons not 
commence manufacture or process ing for the significant new use until they have submitted a 
Significant New Use Notice (SNUN), and EPA has conducted a review of the notice, made an 
 
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/1611/Add.1  
 
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  appropriate determination on the notice, and has taken any risk management actions as are required 
as a res ult of that determination.  
DATES: This rule is effective on 21 May 2021. For purposes of judicial review, this rule shall be 
promulgated at 1 p.m. (e.s.t.) on 5 April 2021.  
This final rule and the proposed rule notified as G/TBT/N/ USA/1611  are identified by Docket Number 
EPA-HQ-OPPT-2020-0138.  The Docket Folder is available on Regulations.gov  at 
https://www.regulations.gov/docket/EPA -HQ-OPPT-2020-0138/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.  
__________  
 
 