. /.  WORLD TRADE  
ORGANIZATION  G/TBT/N/USA/77 
15 September 2004 
 (04-3872) 
Committee on Technical Barriers to Trade Original:  English 
  
NOTIFICATION 
 
The following notification is being circ ulated in accordance with Article 10.6. 
 
1. Member to Agreement notifying:   UNITED STATES
 
If applicable, name of local government involved (Articles 3.2 and 7.2):         
2. Agency responsible:   Environmental Protection Agency  (EPA) (81) 
Name and address (including telephone and fax numbers, e-mail and web-site addresses, if available) of  agency or authority designated to handle comments 
regarding the notification shall be  indicated if different from above:         
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 applicable, otherwise national tariff heading. 
ICS numbers may be provided in  addition, where applicable):   Highway and non-road 
engines  (HS 8408) (ICS 43)   
5. Title, number of pages and language(s) of the notified document:   Test Procedures for 
Testing Highway and Non-road Engines and Omnibus Technical Amendments; Proposed Rule   (170 pages, English) 
6. Description of content:  This proposed regulation aims to revise and harmonize test 
procedures from the various EPA programs for controlling engine emissions.  It will not 
address emission standards, nor is it intended to change the emission reductions expected 
from these EPA programs.  Rather, it proposes to amend the regulations, which contain laboratory specifications for equipment and test fuels, instructions for preparing engines and 
running tests, calculations for determining fi nal emission levels from measured values, and 
instructions for running emission tests usi ng portable measurement devices outside the 
laboratory.  These regulations currently appl y to land-based non-road diesel engines, land-
based non-road spark-ignition engines over 19 kilowatts, and recreational vehicles.  These 
proposed revisions will update the regulations to deal more effectively with the more 
stringent standards recently promulgated by EPA and will also clarify and better define 
certain elements of the required test procedur es.  In particular, the proposed amendments 
will better specify the procedures applicable to  field testing under the regulations.  This 
action also proposes to apply the regulati ons to highway heavy-duty diesel engine 
regulations.  This action is appropriate becau se EPA has historically drafted a full set of 
testing specifications for each vehicle or e ngine category subject to emission standards as 
each program was developed over the past three decades.  This patchwork approach has led 
to some variation in test parameters across programs, which we hope to address by adopting 
a common set of test requirements.  The primary goal of this effort is to create unified 
testing requirements for all engines, which when implemented will streamline laboratory 
efforts for EPA and industry.  This action will also include other technical changes intended 
to clarify and better define requirements for several different EPA engine programs.  These 
changes are relatively minor and are technical in scope. G/TBT/N/USA/77 
Page 2  
 
7. Objective and rationale, including the na ture of urgent problems where applicable:  
To benefit public health and welfare and the environment 
8. Relevant documents:   69 Federal Register (FR) 54845 10 September 2004; Title 40 Code 
of Federal Regulations (CFR) Parts 85, 86, 90, et al.  Will appear in the Federal Register 
when adopted. 
9. Proposed date of adoption:   
Proposed date of entry into force:   }To be determined 
10. Final date for comments:   29 October 2004 
11. Texts available from:  National enquiry point [ X] or address, telephone and fax 
numbers, e-mail and web-site addresses, if available of the other body:   
Full text is available online at these Internet URLs: 
(HTML) 
http://a257.g.akamaitech.net/7/257/24 22/06jun20041800/edocket.access.gpo.gov/2004/04-
19223.htm 
(PDF) http://a257.g.akamaitech.net/7/257/24 22/06jun20041800/edocket.access.gpo.gov/2004/pdf/
04-19223.pdf