   
  
G/TBT/N/USA/1670/Add.1  
 
17 September 2021  
(21-6935) Page: 1/2 
Committee on Technical Barriers to Trade  Original: English  
 
NOTIFICATION  
Addendum  
The following communication , dated  17 September 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 (21 -1.B) 
 
Reason for Addendum:  
[  ] Comment period changed - date:   
[  ] Notified measure adopted - date:  
[X] Notified measure published - date: 16 September 2021  
[X] Notified measure enters into force - date: 15 November 2021  
[X] Text of final measure available from1:  
https://www.govinfo.gov/content/pkg/FR -2021-09-16/html/2021 -20023 .htm 
https://www.govinfo.gov/content/pkg/FR -2021-09-16/pdf/2021 -20023.pdf  
https://members.wto.org/crnattachments/2021/TBT/USA/final_measure/21_5860_00_
e.pdf  
[  ] Notified measure withdrawn or revoked - date:  
Relevant symbol if meas ure 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: Significant New Use Rules on Certain Chemical Substances (21 -1.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 at least 90 days before com mencing 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 pro cessing for the significant new use until they have submitted a Significant New Use Notice 
 
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/1670/Add.1  
 
- 2 - 
 
  (SNUN), EPA has conducted a review of the notice, made an 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 15 November 2021. For purposes of judicial review, this rule shall 
be promulgated at 1 p.m. (E.S.T.) on 30 September 2021.  
This final rule and the proposed rule notified as G/TBT/N/ USA/1670  are identified by Docket Number 
EPA-HQ-OPPT -2020-0513. The Docket Folder is available on Regulations.gov at 
https://www.regulations.gov/docket/EPA -HQ-OPPT-2020-0513/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.  
__________  
 
 