U.S. Environmental Protection Agency

February, 2002

Document Released for Public Information

"Analysis of Emissions Deterioration Using Ohio and Wisconsin IM240 Data" 

Report Number   EPA420-R-02-003     (M6.EXH.002)
 
	The Office of Transportation and Air Quality, Assessment and 
Standards Division announces the release of "Analysis of Emissions Deterioration
Using Ohio and Wisconsin IM240 Data" for public information.  This document EPA420-R-02-003,
also known as M6.EXH.002, is available at the MOBILE6 section of the OTAQ Web Site 
(http://www.epa.gov/otaq/m6.htm). 

	This report describes the data obtained from Colorado, Arizona, Ohio, and Wisconsin,
and provides a brief summary of the I/M programs in each state.  It also 
presents results and conclusions obtained from a data analysis. The results from that analysis
are described briefly, with details found in referenced reports.   Data from Dayton, Ohio, are 
discussed thoroughly in this paper. The Ohio data received special attention because that 
location had no previous I/M program; as a result, these data were considered more 
representative of intrinsic emissions deterioration.

	This report was originally released (as a draft) on January, 2001 under the 
title, "Analysis of Emissions Deterioration Using Ohio and Wisconsin IM240 Data".  
It was subsequently revised in February, 2002, and the February, 2002 version is now the 
final version.   This final revision incorporates suggestions and comments received from 
stakeholders during the 60-day review period and from peer reviewers.