G/TBT/N/USA/1626/Add.2  
 
7 October 2021  
(21-7543) Page: 1/2 
Committee on Technical Barriers to Trade  Original: English  
 
 
NOTIFICATION  
Addendum  
The following communication , dated  7 October 2021 , is being circulated at the request of the 
delegation of the United States of America . 
 
_______________  
 
 
Title: Protection of Stratospheric Ozone: Listing of Substitutes Under the Significant New 
Alternatives Policy Program  
 
Reason for Addendum:  
[X] Comment period changed - date:  22 November 2021  
[  ] 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[  ] Notified measure withdrawn or revoked - date:  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:   
[  ] Content or scope of notified measure changed  and text available from1:  
New deadline for comments (if applicable):   
[  ] Interpretive guidance issued and text available from1:  
[X] Other: https://www.govinfo.gov/content/pkg/FR -2021-10-06/html/2021 -21031.htm  
https://www.govinfo.gov/content/pkg/FR -2021-10-06/pdf/2021 -21031.pdf  
https://members.wto .org/crnattachments/2021/TBT/USA/21_6444_00_e.pdf  
Supplemental notice of proposed rulemaking  
 
Description:  TITLE: Protection of Stratospheric Ozone: Listing of Substitutes Under the Significant 
New Alternatives Policy Program; Supplemental Proposal  
AGENCY: Environmental Protection Agency (EPA)  
ACTION: Supplemental notice of proposed rulemaking  
SUMMARY: Pursuan t to the U.S. Environmental Protection Agency's Significant New Alternatives 
Policy program, the Agency is proposing, as an additional option, to list for a limited period of time 
certain substances in the foamblowing sector, extruded polystyrene: Boardsto ck and billet end -use, 
as acceptable, subject to narrowed use limits. This proposal supplements the Agency's 12 June 2020, 
proposal with respect to the proposed listings in the foam -blowing sector, taking into consideration 
public comments and information received since issuance of the initial proposal. In the 12 June 2020, 
 
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/1626/Add.2  
 
- 2 - 
 
  proposal, EPA proposed to list three foam blowing agent blends as acceptable. In this supplemental 
proposal, EPA is proposing an additional approach to list these blends as acceptable, s ubject to 
narrowed use limits, in the foam blowing sector, extruded polystyrene: Boardstock and billet end -
use, from the effective date of a final rule based on this supplemental proposal until 1 January 2023. 
The Agency is providing an opportunity for pub lic comment on this additional approach for the listings 
in the foam blowing sector, as well as reopening the public comment period for the proposed listings 
in the foam blowing sector in the 12 June 2020, proposal. The Agency is not reopening for comment 
those other portions of the 12 June 2020, proposal which are addressed in a separate final rule 
issued 6 May 2021.  
DATES: Comments on this supplemental proposal must be received on or before 22 November 2021. 
Any party requesting a public hearing must noti fy the contact listed below under FOR FURTHER 
INFORMATION CONTACT by 5 p.m. Eastern Daylight Time on 12 October 2021. If a virtual hearing 
is held, it will take place on or before 21 October 2021 and further information will be provided on 
EPA's Stratosphe ric Ozone website at www.epa.gov/snap . 
This supplemental notice of proposed rulemaking and previous actions notified under the 
symbol  G/TBT/N/USA/1626  are identified by Docket Number EPA -HQ-OAR-2019-0698. The Docket 
Folder  is available on Regulations.gov at  https://www.regulations.gov/docket/EPA -HQ-OAR-2019-
0698/document  and provides access to primary and supporting documents as well as comments 
received. Documents are also accessible from  Regulations.go v by searching the Docket Number. 
WTO Members and their stakeholders are asked to submit comments to the USA TBT Enquiry Point . 
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.  
__________