U.S. Environmental Protection Agency

April 2001

Document Released for Public Information

"Modeling Diurnal and Resting Loss Emissions from Vehicles
Certified to the Enhanced Evaporative Standards"

Report Number   EPA420-R-01-021     (M6.EVP.005)
 
	The Office of Transportation and Air Quality, Assessment and 
Standards Division announces the release of "Modeling Diurnal and 
Resting Loss Emissions from Vehicles Certified to the Enhanced 
Evaporative Standards" for public information.  This document 
EPA420-R-01-021, also known as M6.EVP.005, is available at the MOBILE6 
section of the OTAQ Web Site (http://www.epa.gov/otaq/m6.htm).

	This report documents the method used in MOBILE6 for estimating 
the resting loss and diurnal emissions from vehicles certified to the 
enhanced evaporative standards (i.e., 1999 and newer vehicles plus some 
1996 through 1998).  

	This report was originally released (as a draft) in November 
1998.  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.