----- Forwarded by Melanie King/RTP/USEPA/US on 08/09/2010 04:50 PM

----- |------------> | From: | |------------> >--------------------------------------------------------------------------- ---------------------------------------------------------------| |"Bromberg, Kevin L." <kevin.bromberg@sba.gov> | >--------------------------------------------------------------------------- ---------------------------------------------------------------| |------------> | To: | |------------> >--------------------------------------------------------------------------- ---------------------------------------------------------------| |Melanie King/RTP/USEPA/US@EPA, RobertJ Wayland/RTP/USEPA/US@EPA | >--------------------------------------------------------------------------- ---------------------------------------------------------------| |------------> | Cc: | |------------> >--------------------------------------------------------------------------- ---------------------------------------------------------------| |"Higgins, Cortney" <Cortney_Higgins@omb.eop.gov>, "Kymn, Christine J." <Christine_J._Kymn@omb.eop.gov>, "Johnson, Nancy" | |<Nancy.Johnson@hq.doe.gov>, "Maresca, Charles A." <Charles.Maresca@sba.gov> | >--------------------------------------------------------------------------- ---------------------------------------------------------------| |------------> | Date: | |------------> >--------------------------------------------------------------------------- ---------------------------------------------------------------| |08/09/2010 04:42 PM | >--------------------------------------------------------------------------- ---------------------------------------------------------------| |------------> | Subject: | |------------> >--------------------------------------------------------------------------- ---------------------------------------------------------------| |No Set AFR for catalysts mfgers | >--------------------------------------------------------------------------- ---------------------------------------------------------------|

This confirms what we expected. The owner is free to choose the AFR that he needs. This will substantially reduce the NOx benefits. As you know Joe is the technical expert with the engine manufacturers. Kevin -----Original Message----- From: Joseph L. Suchecki [mailto:jsuchecki@emamail.org] Sent: Monday, August 09, 2010 3:30 PM To: Bromberg, Kevin L. Subject: RE: CI RICE NESHAP final rule Kevin, I quickly talked to one of our manufacturers on this topic. There is generally no set point required by the manufacturer and an owner and operator is free to choose the set point depending on his needs. I don't fully understand all of the requirements, but essentially the owner/operator determines set point within a narrow range that allows compliance to emission standards and getting the best fuel economy. Of course, if an existing engine adds a three-way catalyst to control formaldehyde emissions, just the addition of the catalyst system will substantially reduce NOx emissions compared to an uncontrolled engine.

Not sure if that answers your question. Joe-----Original Message-----

From: Bromberg, Kevin L. [mailto:kevin.bromberg@sba.gov] Sent: Monday, August 09, 2010 1:19 PM To: Suchecki, Joe Cc: Bromberg, Kevin L. Subject: FW: CI RICE NESHAP final rule New number 312-929-1978

Hi Joe: For rich burn engine operators who buy NSCR catalysts for retrofit purposes - to reduce HCHO emissions for RICE SI rule - what will be the specified operating parameters for those catalysts - does the cat mfg have specified operating parameters that limit AFR to .99 to .96, or can operator use lean settings at 1.0 to 1.1, say, to meet the HCHO limit?

Feel free to call me at 202-205-6964 (but I'll be on the phone at 2:30-3:30) I could use this by email during the call. Thx, Kevin