Record Display for the EPA National Library Catalog


Main Title Median life, annual activity, and load factor values for nonroad engine emissions modeling : NR-005c /
CORP Author United States. Environmental Protection Agency. Office of Transportation and Air Quality. Assessment and Standards Division,; Environmental Protection Agency, Washington, DC. Air and Radiation Div.
Publisher United States Environmental Protection Agency,
Year Published 2004
Report Number EPA 420-P-04-005
Stock Number PB2005-106071
OCLC Number 1015200881
Subjects Combustion gases--Environmental aspects--United States--Computer simulation ; Engines--Environmental aspects--United States--Computer simulation ; Air--Pollution--United States--Forecasting ; Combustion gases--Environmental aspects--United States--Forecasting
Additional Subjects Air pollution ; Exhaust emissions ; Mathematical models ; Inventories ; Automobile population ;
Internet Access
Description Access URL
Library Call Number Additional Info Location Last
ELCD  EPA 420-P-04-005 PDF file on file NVFEL Library/Ann Arbor, MI 12/19/2017
NTIS  PB2005-106071 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Edition Revised April 2004.
Collation 1 online resource ([46] pages) : figures, tables
This report documents the default input values of median life, annual activity, and load factor for various types of nonroad engines. The model uses annual activity and load factor values to calculate yearly emissions for each engine type. In addition, the model uses activity and load factor, in combination with median life, to calculate the fleet age distributions for each engine type, as it projects future (or past) engine populations. This documents the default annual activity, load factor, and median life values.
Title from PDF title screen (viewed on December 11, 2017). "EPA 420-P-04-005." "Revised April 2004." "NR-005c." Supersedes EPA 420-P-02-014. Includes bibliographical references.