Record Display for the EPA National Library Catalog


Main Title Weekday and weekend day temporal allocation of activity in the draft NONROAD2004 model /
CORP Author Environmental Protection Agency, Washington, DC. Air and Radiation Div.
Publisher U.S. Environmental Protection Agency, Office of Transportation and Air Quality, Assessment and Standards Division,
Year Published 2004
Report Number EPA420-P-04-015
Stock Number PB2005-106081
OCLC Number 865088911
Subjects Acid-forming emissions--United States--Computer simulation ; Internal combustion engines--Environmental aspects--United States ; Air--Pollution--Standards--United States
Additional Subjects Annual activity ; Emission inventories ; Estimates ; Modeling ; NONROAD2004 emissions model ; Nonroad air emissions inventory model ; Environmental Protection Agency
Internet Access
Description Access URL
Library Call Number Additional Info Location Last
ELCD  EPA 420-P-04-015 PDF file on file NVFEL Library/Ann Arbor, MI 12/16/2013
NTIS  PB2005-106081 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Edition Revised April 2004.
Collation 1 online resource (5 pages)
The EPA is developing a national nonroad air emissions inventory model called NONROAD. The latest version of this model is draft NONROAD2004. The model uses estimates of annual activity for each equipment type, generally expressed in terms of hours of operation or gallons of fuel used per year, to calculate yearly emission inventories. It will also calculate inventories on a seasonal (i.e., summer, fall, winter, spring), monthly, or daily (i.e., weekday or weekend day) basis by allocating annual activity to these smaller time periods. This memorandum documents the daily activity allocation fractions used in the current, draft version of NONROAD. The fractions are expressed as weekday and weekend day fractions of weekly activity and are provided for each equipment/category type. Seasonal and monthly activity allocation fractions are addressed in a separate technical memorandum (Report No. NR-004b).
Title from PDF title screen (viewed December 12, 2013). "EPA420-P-04-015." "NR-015a." Includes bibliographical references.