G/TBT/N/USA/1765  
17 August 2021  
(21-6248) Page: 1/2 
Committee on Technical Barriers to Trade  Original:  English  
 
  
NOTIFICATION  
The following notification is being circulated in accordance with Article 10.6  
 
1. Notifying Member:  UNITED STATES OF AMERICA   
If applicable, name of local government involved (Article 3.2 and 7.2):  State of 
California  
2. Agency responsible:  Environmental Protection Agency, Air Resources Board, State of 
California [1794]  
Name and address (including telephone and fax numbers , email and website 
addresses, if available) of agency or authority designated to handle comments 
regarding the notification shall be indicated if different from above:   
Please submit comments to: USA WTO TBT Enquiry Point, Email: usatbtep@nist.gov  
3. Notified under Article 2.9.2 [   ], 2.10.1 [   ], 5.6.2 [   ], 5.7.1 [   ], other : Technical 
Regulation - Local Government (Article 3.2)  
4. Products covered (HS or CCCN where applicable, otherwise national tariff 
heading. ICS numbers may be provided in addition, where applicable):  Emissions; 
refrigerants; Transport (ICS 03.220), Environmental protection (ICS 13.020), Air quality 
(ICS 13.040), Refrigerating technology (ICS 27.200), Refrigerants and antifreezes (ICS 
71.100.45)  
5. Title, number of pages and language(s) of the notified document:  Transport 
Refrigeration Units ATCM Amendments (106 page(s), in English)  
6. Description of content:  Proposed rule - Amends rules to achieve added public health, 
air quality, an d climate benefits by requiring the transition of diesel -powered  truck 
transport refrigeration units (TRUs) to zero emission technology, a PM emission standard 
for newly manufactured TRU engines in the remaining categories, and the use of lower 
global warm ing potential (GWP) refrigerant.  
7. Objective and rationale, including the nature of urgent problems where 
applicable:  Protection of the environment  
8. Relevant documents:   
No. 31 -Z, California Regulatory Notice Register 30 July 2021 (pages 962 -973): 
https://oal.ca.gov/wp -content/uploads/sites/ 166/2021/07/2021 -Notice -Register -
Number -31-Z-July-30-2021.pdf  
California Air Resources Board (CARB) Proposed Amendments to the Airborne Toxic 
Control Measure for In -Use Diesel -Fueled Transport Refrigeration Units (TRU) and TRU 
Generator Sets, and Facilitie s Where TRUs Operate: 
https://ww2.arb.ca.gov/rulemaking/2021/tru2021  
  G/TBT/N/USA/1765  
 
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  9. Proposed date of adoption:  To be determined  
Proposed date of entry into force:  To be determined  
10. Final date for comments:  13 September 2021 . 
Deadline to Submit Public Comments: 13 September 2021, or during the Public Hearing 
on 23 September 2021 WTO Members and their stakeholders are asked to submit 
comments via e -mail to the USA TBT Enquiry Point at usatbtep@nist.gov  by or before 
4pm ET on 13 September 2021. Comments received within the comment period by the 
USA TBT Enquiry Point from WTO Members and their stakeholders will be shared with the 
regulator and will  also be submitted per ARB instructions accessible from 
https://www.arb.ca.gov/lispub/comm/bclist.php . Public comments submitted on this 
action will be accessible at 
https://www.arb.ca.gov/lispub/comm/bccommprt.php?listname=tru2021 . WTO 
Members who provide comments to the California ARB during the public hearing on 23 
September are kindly requested to also submit th e comments to the USA TBT Enquiry 
Point via e -mail at usatbtep@nist.gov . 
11. Texts available from:  National enquiry point [ ] or address, telephone and fax 
numbers and email and website addresses, if available , of other body:   
https://members.wto.org/crnattachments/2021/TBT/USA/21_5236_00_e.pdf  
https://members.wto.org/crnattachments/2021/TBT/USA/21_5236_01_e.pdf