G/TBT/N/USA/1007  
 
3 July 2015  
(15-3424)  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):  
2. Agency responsible: Environmental Protection Agency (EPA) [1025] 
Name and address (including telephon e 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: ncsci@nist.gov  
3. Notified under Article 2.9.2 [X], 2.10 .1 [ ], 5.6.2 [ ], 5.7.1 [ ], other: 
4. Products covered (HS or CCCN where applic able, otherwise national tariff heading. 
ICS numbers may be provided in addition, where applicable): Aircraft emissions. 
Environmental protection (ICS: 13.020), Air quality (ICS: 13.040), Aircraft and space 
vehicles in general (ICS: 49.020) 
5. Title, number of pages and language(s) of the notified document: Proposed Finding 
That Greenhouse Gas Emissions From Aircraft Cause or Contribute to Air Pollution That May 
Reasonably Be Anticipated To Endanger Public Health and Welfare and Advance Notice of Proposed Rulemaking (50 pages, in English) 
6. Description of content: In this action, the Administrator is proposing to determine that 
greenhouse gas concentrations in the atmosphere endanger the public health and welfare 
of current and future generations within the meaning of section 231(a) of the Clean Air 
Act. She proposes to make this finding specifically with respect to the same six well-mixed greenhouse gases (GHGs) – carbon dioxide, me thane, nitrous oxide, hydrofluorocarbons, 
perfluorocarbons, and sulfur hexafluoride – that  together were defined as the air pollution 
in the 2009 Endangerment Finding under section 202(a) of the Clean Air Act and that 
together constitute the primary cause of the climate change problem. The Administrator is also proposing to find that greenhouse gas emissions from certain classes of engines used 
in aircraft are contributing to air pollution - the mix of greenhouse gases in the 
atmosphere - that endangers public health and welfare under section 231(a) of the Clean Air Act. Concurrent with these proposed findin gs, the EPA is issuing an Advance Notice of 
Proposed Rulemaking to provide an overview of and seek input on a variety of issues 
related to setting an international CO2 standard for aircraft at the International Civil Aviation Organization (ICAO), ICAO's progress in  establishing global aircraft standards that 
achieve meaningful reductions in CO2 emissions, and (provided the EPA promulgates final 
endangerment and cause and contribute findings for aircraft engine GHG emissions) the 
potential use of section 231 of the Clean Air Act to adopt and implement corresponding aircraft engine GHG emission standards domestically, ensuring transparency and the 
opportunity for public comment.  
7. Objective and rationale, including the nature of urgent problems where 
applicable: Protection of the environment  G/TBT/N/USA/1007 
 
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  8. Relevant documents: 80 Federal Register (FR) 37757, 1 July 2015; Title 40 Code of 
Federal Regulations (CFR) Part 87 and 1068. W ill appear in the Federal Register when 
adopted. 
9. Proposed date of adoption: To be determined 
Proposed date of entry into force: To be determined 
10. Final date for comments: 31 August 2015 
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/crnattachm ents/2015/TBT/USA/15_2593_00_e.pdf