-----Forwarded by Melanie King/RTP/USEPA/US on 07/28/2010 11:02PM -----
To: "Bromberg, Kevin L." <kevin.bromberg@sba.gov> 
From: Melanie King/RTP/USEPA/US 
Date: 07/28/2010 04:21PM 
cc: "Kymn, Christine J." <Christine_J._Kymn@omb.eop.gov>, "Higgins, Cortney" 
<Cortney_Higgins@omb.eop.gov>, "Johnson, Nancy" <Nancy.Johnson@hq.doe.gov>, 
RobertJ Wayland/RTP/USEPA/US@EPA, Fred Talcott/DC/USEPA/US@EPA, Larry 
Sorrels/RTP/USEPA/US@EPA, Amy Lamson/RTP/USEPA/US@EPA, Peter 
Nagelhout/DC/USEPA/US@EPA, Michael Horowitz/DC/USEPA/US@EPA 
Subject: Re: FW: Emission Factors and Percent Reduction by Catalysts 
 
Kevin, 
Where are you seeing that the CO % reduction for 4SLB should be 71%?  If you look at the 
table for 4SLB which is Table 2, see the far right column, the % reductions for CO are all 
greater than 90%.  The % reductions for formaldehyde, which is what we use for HAP and 
VOC, is provided in each table (see CH2O).  Table 4 for 4SRB engines does show the NOx % 
reductions, see the far right column.  None of the other subcategories has NOx reductions. 
 
The emission factors come from our Emissions Database that was put together several years 
ago, plus we supplemented that information with new data where we could.  We're working 
on a memo that documents the information.  
 
Melanie King 
Energy Strategies Group 
Sector Policies and Programs Division 
Office of Air Quality Planning and Standards 
U.S. Environmental Protection Agency 
 
Mail Code D243-01 
RTP, NC  27711 
 
Phone:  (919) 541-2469 
Fax:       (919) 541-5450 
king.melanie@epa.gov 
 
"Bromberg, Kevin L." ---07/28/2010 04:06:55 PM---Hi - Melanie - I'm forwarding this 
because I think Cortney is jammed. Not sure if we will get to thi
 
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>
 
Date:
 
07/28/2010 04:06 PM
 
Subject
:
 
FW: Emission Factors and Percent Reduction by Catalysts
 
 
 
 
Hi   – Melanie   – I’m forwarding this because I think Cortney is jammed.  Not sure if we will 
get to this tomorrow in preamble questions, because it’s really about the RIA.  But these are 
pretty basic, and your contractor could probably readily answer these. 
Kevin 
_____________________________________________  
From:  Bromberg, Kevin L.  
Sent:  Wednesday, July 28, 2010 11:25 AM  
To:  'Higgins, Cortney'; Kymn, Christine J.  
Cc:  Lee, Amanda I.  
Subject:  Emission Factors and Percent Reduction by Catalysts 
<<EPA-HQ-OAR-2002-0059-0665[1].pdf>>   
Cortney, Christine – I think we should forward this to EPA this AM.  See below: 
This document is cited on page 2 of in the July 26 Cost/Ton memo, as the source of the control 
efficiencies represented in Table 2.  The July 26 memo reports CO emission reductions of 94% 
and 49% for  4 SLB and 4 SRB respectively,  and the figures in this document appear to indicate 
71% and 49%  respectively by my inspection.  Although, EPA has properly identified the 49% 
reduction, it appears that the 4SLB figure used by EPA is incorrect: it should be 71% instead of 
94% reduction.   
More importantly, this document does not provide the percent emission reductions for HAPs, 
VOCs, or NOx – where is this document?  Perhaps, EPA meant to cite a different document in 
footnote 3 of the July 27 th  document? 
Most importantly, the July 26 memo does not identify the source of the original emission 
factors of uncontrolled emissions listed in Table 2, before adoption of the percent reductions.   
What is the source of the original emission factors? 
Without this information, I can’t verify EPA’s emission reductions in two ways – can’t verify the 
control efficiencies or the original emission factors – which can very much modify the cost 
reasonableness of the GACT analyses. 
I thought I should send this in advance of tomorrow’s questions to give you a heads-up.  If you 
could answer today, that would be even better. 
Thanks 
Kevin 
Thanks 
 
Kevin (See attached file: EPA-HQ-OAR-2002-0059-0665[1].pdf) 

