G/TBT/N/USA/2057  
13 October 2023  
(23-6908) 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 
Colorado  
2. Agency responsible:   
Department of Public Health and Environment, State of Colorado [2088]  
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 [  ], 3.2 [X], 7.2 [  ], 
other :  
4. Products covered (HS or CCCN where applicable, otherwise national tariff 
heading. ICS numbers may be provided in addition, where applicable):  Major 
stationary source emissions; Environmental protection (ICS code(s): 13.020); Stationary 
source emissions (ICS code(s): 13.040.40)  
5. Title, number of pages and language(s) of the notified document:  Regulation 
Number 26 Control of Emissions from Engines and Major Stationary Sources; ( 34 page(s), 
in English)  
6. Description of content:  Proposed rule and announcement of online public hearing  on 
12 December 2023 - Amends  rules to reduce emissions of ozone precursors and other 
pollutants for purposes of, without limitation, attaining the federal National Ambient Air 
Quality Standard for ozone and improving public health and welfare, consistent with the 
proposal from the Ai r Pollution Control Division. This proposal includes revisions to 
Colorado's State Implementation Plan (SIP)  and revisions to associated regulations, both 
in and outside of the SIP.  
7. Objective and rationale, including the nature of urgent problems where 
applicable:  Protection of the environment  
8. Relevant documents:   
Code of Colorado Regulations eDocket: 
https://www.coloradosos.gov/CCR/eDocketDetails.do?trackingNum=2023 -00639  
5 Code of Colorado Regulations (CCR) 1001 -30 
The Colorado Air Quality Control Commission (AQCC) website is accessible at: 
https://cdphe.colorado.gov/aqcc  
The hearing notice is accessible online via the AQCC current and recent commission 
hearings webpage at https://cdphe.colorado.gov/aqcc -current -and-recent -commission -G/TBT/N/USA/2057  
 
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  hearings , selecting Rulemaking Hearing: Ozone SIP, Regulation Numbers 7, 21, 25, 26, 
and Air Quality Standards , then Notice of Rulemaking Hearing , and finally, selecting the 
document with file name SOS_Ozone_Notice_121223 -DORA_R26.pdf . The current 
version of Regulation Number 26 is available at 
https://drive.google.com/file/d/1ROPSlL7IoqzRd40eNB3yhOoNP7wsR5NM/view . 
WTO Members and their stakeholders are asked to submit comments to the USA TBT 
Enquiry Point  by or before 4pm Eastern Time  on 28 November 2023. Comments received 
by the USA TBT Enquiry Point from WTO Members and their stakeholders will be shared 
with the regulator if received with in the comment period.  
9. Proposed date of adoption:  To be determined  
Proposed date of entry into force:  To be determined  
10. Final date for comments:  28 November 2023  
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/2023/TBT/USA/23_12998_00_e.pdf