"Coburn, Jeff B." <cob@rti.org> 
09/26/2007 12:26 PM	To
"Craig Schmeisser" <Craig.Schmeisser@rmtinc.com>
cc
"Christian Richter" <crichter@thepolicygroup.com>, Steve 
Fruh/RTP/USEPA/US@EPA, Conrad Chin/RTP/USEPA/US@EPA
bcc

Subject
RE: TCI and AOC
	
		
		
		We used the "Cost-Air" spreadsheet model that EPA used to support; 
apparently these are no longer posted on EPA's website (see notice 
below).  Let me check with Steve and Conrad regarding how these sheets can 
be provided.  I would think that you can use your engineering (or "real 
world") costs for controlling EIFs and compare these to the costs 
generated from the Cost-Air spreadsheets to see if they seem reasonable.  
		 
		 
		 
		              Availability of the
       Vatavuk Air Pollution Control Cost Indexes (VAPCCI)  and the
     COST-AIR Air Pollution Control Cost Spreadsheets, Second Edition
                      (COST-AIR Spreadsheets)

                             5/5/2005


   Due to changes in the data collected by the Bureau of Labor Statistics, 
the Office of Air Quality Planning and Standards no longer supports the 
VAPCCI. This decision affects our support for the COST-AIR Spreadsheets, 
as well.  As a result, the EPA will no longer update these files. 

   In the case of the COST-AIR Spreadsheets, OAQPS invites you to download 
and use the computer program called the Air Compliance Advisor (ACA).  
(Note: The ACA is available on the CATC Products Web page under the 
heading "Software (executables & Manuals)" which begins immediately below 
this listing.) The ACA fully incorporates the functions performed by the 
COST-AIR Spreadsheets, and is maintained by EPA to ensure the latest 
prices and equations are being used. 

   With respect to the VAPCCI, other good indexes are readily available 
from the Bureau of Labor Statistics and from a variety of private sources. 
We invite you to investigate these alternative measures, all of which 
produce reliable results. 

   We are sorry if this decision causes any inconvenience.

		
		From: Craig Schmeisser [mailto:Craig.Schmeisser@rmtinc.com] 
Sent: Wednesday, September 26, 2007 9:09 AM
To: Coburn, Jeff B.
Cc: Christian Richter
Subject: TCI and AOC

		 
		Hi Jeff,
		Thanks for the attached spreadsheet, it has been most useful.
		 
		As discussed yesterday I am reviewing the correlations. Both correlations 
are based on TCI and AOC data that was calculated elsewhere. Can you 
provide me the information to review the basis for the developed TCI and 
AOC values?
		 
		Thanks.
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