G/TBT/N/USA/2001/Add.2  
 
21 November 2023  
(23-7839) Page: 1/2 
Committee on Technical Barriers to Trade  Original: English  
 
 
NOTIFICATION  
Addendum  
The following communication , dated  21 November 2023, is being circulated at the request of the 
delegation of the United States of America . 
 
_______________  
 
 
Title:  New Source Performance Standards for Greenhouse Gas Emissions From New, Modified, and 
Reconstructed Fossil Fuel -Fired Electric Generating Units; Emission Guidelines for Greenhouse Gas 
Emissions From Existing Fossil Fuel -Fired Electric Generating Units; and Repeal of the Affordable 
Clean Energ y Rule  
 
Reason for Addendum:  
[ ] Comment period changed - date:   
[ ] Notified measure adopted - date:  
[ ] Notified measure published - date:  
[ ] Notified measure enters into force - date:  
[ ] Text of final measure available from1:  
[ ] Notified measure withdrawn or revoked - date:  
Relevant symbol if measure re -notified:   
[X] Content or scope of notified measure changed  and text available from1:  
88 Federal Register (FR) 59481, 40 Code of Federal Regulations (CFR) Part 60:  
https://www.govinfo.gov/content/pkg/FR -2023-11-20/html/2023 -25580.htm  
https://www.govinfo.gov/content/pkg/FR -2023-11-20/pdf/2023 -25580.pdf  
https://members.wto.org/crnattachments/2023/TBT/USA/modification/23_13626_00_e
.pdf 
New deadline for comments (if applicable):  20 December 2023  
[ ] Interpretive guidance issued and text available from1:  
[X] Other:  
Supplemental notice of proposed rulemaking  
 
Description:  The Environmental Protection Agency (EPA) is announcing the availability of and 
soliciting comment on an Initial Regulatory Flexibility Analysis (IRFA) following the completion of a 
Small Business Advocacy Review (SBAR) Panel for the proposed New Source Pe rformance Standards 
for Greenhouse Gas Emissions from New, Modified, and Reconstructed Fossil Fuel -Fired Electric 
 
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/2001/Add.2  
 
- 2 - 
 
  Generating Units. The EPA is seeking public comment on the regulatory flexibilities considered in the 
IRFA. In addition, the EPA is soliciting  comment on whether to include mechanisms to address 
potential reliability issues raised by small business and other commenters with respect to both 
proposed New Source Performance Standards and the proposed Emission Guidelines for Greenhouse 
Gas Emissions  from Existing Fossil Fuel -Fired Electric Generating Units.  
Comments must be received on or before 20 December 2023.  
Title 40 Code of Federal Regulations (CFR) Part 60  
This supplemental notice of proposed rulemaking and previous actions notified under the symbol 
G/TBT/N/USA/2001  is identified by Docket Number EPA -HQ-OAR-2023-0072. The Docket Folder is 
available on Regulations.gov at https://www.regulations.gov/docket/EPA -HQ-OAR-2023-
0072/document  and provides access to primary and supporting documents as well as comments 
received. Docume nts are also accessible from Regulations.gov  by searching the Docket Number. 
WTO Members and their stakeholders are asked to submit comments to the USA TBT Enquiry Point  
by or before 4:00 p.m.  Eastern Time  on 20 December 2023. Comments received by the USA TBT 
Enquiry Point from WTO Members and their stakeholders will be shared with the regulator and will 
also be submitted to the Docket  on Regulations.gov if received within the comment period.  
__________