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  |"Joseph L. Suchecki" <jsuchecki@emamail.org>                                                                                              
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  |Melanie King/RTP/USEPA/US@EPA                                                                                                             
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  |02/22/2011 11:51 AM                                                                                                                       
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  |EMA Response to Question on IMO Allowance Comment                                                                                         
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TO:                  Melanie King
                        US EPA

FROM:           Joe Suchecki
                        EMA

DATE:            February 22, 2011

RE:                 Request for Clarification on Comment Regarding IMO
Allowances


            In an email dated February 16, 2011, you asked for clarification 
of a comment that EMA submitted on proposed changes to the NSPS for 
Compression Ignition engines.  The subject comment stated that certain 
stipulated allowances for temperature and humidity correction from IMO ANNEX 
VI, Sections 6.3.11 and 6.4.13 should be incorporated into the NSPS.  More 
specifically you asked for clarification as to whether EMA was asking to be 
able to use different reference temperature and humidity values when testing 
engines greater than 30 L/cyl.

            I have checked with EMA members that provide stationary engines of 
that size to clarify the intent of the comment.  After some discussion, and 
now having a better understanding of both the CI NSPS and IMO regulations, we 
believe that it is not necessary to incorporate those IMO allowances for 
stationary engines.  EMA now believes that those allowances add a complicating 
set of factors that are not needed.

            EMA withdraws the request in our previous comments related to 
incorporating allowances from Sections 6.3.11 and 6.4.13.  EMA believes that 
EPA does not need to take any action on this specific comment.





Joseph L. Suchecki
Director, Public Affairs
Engine Manufacturers Association
333 W. Wacker Drive, Suite 810
Chicago, IL 60606
312-929-1978