U.S. Environmental Protection Agency

April 2001

Document Released for Public Information

"Evaluating Multiple Day Diurnal Evaporative Emissions Using RTD Tests" 

Report Number   EPA420-R-01-020     (M6.EVP.003)
 
	The Office of Transportation and Air Quality, Assessment and 
Standards Division announces the release of "Evaluating Multiple Day 
Diurnal Evaporative Emissions Using RTD Tests" for public information.  
This document EPA420-R-01-020, also known as M6.EVP.003, is available 
at the MOBILE6 section of the OTAQ Web Site 
(http://www.epa.gov/otaq/m6.htm).

	In parallel reports (M6.EVP.001 and M6.EVP.002), EPA estimated 
the diurnal emissions produced by vehicles that have been parked for up 
to one full day (24 hours).  This report documents the method used in 
MOBILE6 for estimating the diurnal emissions from vehicles parked for 
more than 24 hours (i.e., multiple days).  

	This report was originally released (as a draft) in January 
1999.  This current version is the final revision of that draft.  This 
final revision incorporates suggestions and comments received from 
stakeholders during the 60-day review period and from peer reviewers.