G/TBT/N/USA/1477  
 
29 April 2019  
(19-2923) 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 AME RICA  
If applicable, name of local government involved (Article 3.2 and 7.2):   
2. Agency responsible:  Environmental Protection Agency (EPA) [1507]  
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 [X], 5.7.1 [   ], other :  
4. Products covered (HS or CCCN where applicable, otherwise national tariff 
heading. ICS numbers may be provided in addition, where applicable):  Stationary 
combustion turbines emissions; Steam turbines and other vapour turbines (HS 8406); 
Hydraulic turbines, water wheels, and regulators therefor (HS 8410); Air quality 
(ICS 13.040), Compressors and pneumatic machines (ICS 23.140), Gas a nd steam 
turbines. Steam engines (ICS 27.040), Environmental testing (ICS 19.040)  
5. Title, number of pages and language(s) of the notified document:  National 
Emission Standards for Hazardous Air Pollutants: Stationary Combustion Turbines 
Residual Risk an d Technology Review (32 page(s), in English)  
6. Description of content:  The Environmental Protection Agency (EPA) is proposing 
amendments to the National Emission Standards for Hazardous Air Pollutants (NESHAP) 
for Stationary Combustion Turbines to addres s the results of the residual risk and 
technology review (RTR) the EPA is required to conduct in accordance with the Clean Air 
Act (CAA). The EPA is proposing to find that the risks from this source category due to 
emissions of air toxics are acceptable an d that the existing NESHAP provides an ample 
margin of safety to protect public health. The EPA identified no new cost -effective controls 
under the technology review that would achieve further emissions reductions from the 
source category. The EPA is also proposing to amend provisions addressing periods of 
startup, shutdown, and malfunction (SSM) and to require electronic reporting. In addition, 
the EPA is proposing to remove the stay of the effectiveness of the standards for new lean 
premix and diffusion f lame gas -fired turbines that was promulgated in 2004.  
7. Objective and rationale, including the nature of urgent problems where 
applicable:  Protection of the environment; Quality requirements  G/TBT/N/USA/1477  
 
- 2 - 
 
  8. Relevant documents:   
• 84 Federal Register  (FR) 15046, 12 April 2019; Title 40 Code of Federal 
Regulations (CFR) Part 63; https://www.govinfo.gov/content/pkg/FR -2019-04-
12/html/2019 -07024.htm;  https://www.govinfo. gov/content/pkg/FR -2019-04-
12/pdf/2019 -07024.pdf  
9. Proposed date of adoption:  To be determined  
Proposed date of entry into force:  To be determined  
10. Final date for comments:  28 May 2019  
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/2019/TBT/USA/19_2523_00_e.pdf