               US Environmental Protection Agency
                    Office of Mobile Sources
               NONROAD Emissions Inventory Model

July 17, 1998

This is one item in a series of notes being issued concerning the
draft EPA NONROAD model, which was released on June 18, 1998, and
distributed at the workshop in Chicago on June 25.  Issues that were
known at the time of release are covered in a separate Release Notes
document, which was included on the distribution CD. 

The updated files listed below are ZIP'd to simplify some of the
downloads and so that the date stamps on the data files will be the
same on your computer after you download and unZIP them as they are on
the EPA systems.  This will help you keep track of the versions in use
and will help us provide support as needed.  If you are unfamiliar
with unZIPing files, please see the information provided on the EPA
NONROAD web site.


1)  NONROAD release and review dates - 

The draft EPA NONROAD model was released on June 18, 1998. 
Comments on the model are due by August 18, 1998. 


2)  Long county names, Correction to GUI - 

Problem:  When choosing to do a county level model run, the
Graphical User Interface (GUI) on the release CD did not properly
handle county names longer than about 10 characters.  When
writing the comment field in the Region packet in the OPTion file
it would write the county name followed by "County " and then the
state abbreviation.  When choosing a county with a name longer
than 10 characters, the entire string, e.g., "Los Angeles County
CA" would spill over into the actual data field where the model
expects to find the FIPS code.  This would seriously corrupt the
OPT file, sometimes removing lines below that record including
the /END/ packet terminator. 

Solution:  Either download the newer version of the GUI that has
this fixed (it truncates the county name at 10 characters), or
use a text editor to enter the desired county FIPS codes into the
/REGION/ packet of the OPT file.  Note that whatever is in the
comment area (first 20 characters) of the record is totally
ignored by the model -- it's only there for your reference when
viewing the OPT file in a text editor.  The new version of nr-
gui.exe should be placed in your main \nonroad\ directory where
the core model (nonroad.exe) is located. 


3)  Growth Data File Corrected - 

The nation.grw file distributed with the model was one based on
BEA indicators, whereas the intention as described in technical
report NR-008 and the 6/25/98 workshop was for the model to use
growth projections based on PSR data.  The correct PSR-based
growth file is now available.  This new file should be placed in
your \nonroad\data\growth\ subdirectory. 


4)  Equipment Population (.POP) Data Files Updated - 

At the 6/25/98 workshop it was noted that certain types of 4-
stroke recreational equipment, such as off-road motorcycles, had
been inadvertently left out of the .POP files.  This has now been
remedied.  Also, some changes in the median life values for
spark-ignition recreational marine engines have been made in the
POP files.  These new files should be placed in your
\nonroad\data\pop\ subdirectory. 


5)  Emission Factor (.EMF) Files Updated - 

The emission factor data files were updated to remove any effects
of emission regulations on underground mining equipment (SCC
2270009010), since such equipment is exempted from the
regulations.   Also, the Crankcase emission factors (file
crank.emf) were updated to more accurately reflect small spark-
ignition engine crankcase emission controls.  These new files
should be placed in your \nonroad\data\emsfac\ subdirectory. 


6)  Technology Phase-In File Updated - 

Technology fractions that did not add to 1.0 were corrected.  The
SCC's involved were: 2265006005, 2265006010, and 2282005010.  The new
file should be placed in your \nonroad\data\tech\ subdirectory. 


7)  Seasonal Allocation File Updated - 

This had two different entries for diesel recreational equipment, so
the erroneous one was removed.  The new file should be placed in your
\nonroad\data\season\ subdirectory.


8)  Reporting Utility Keyboard "Lockup" - 

On rare occasions certain users have experienced a keyboard lockup
(inability to type anything) upon importing a new model simulation
into the Reporting Utility when attempting to enter a table name into
the dialog box.  If you have experienced this problem more than once
or if you are able to make it happen regularly, please contact us at
the address below to try out a revised version of the reporting
utility that may fix the problem. 


9)  Getting NONROAD Core Model to Run in Background -

This is optional.  It will allow you to use your computer to run other
applications while performing long NONROAD model runs.  In Windows 95
Explorer, right click on and go to properties of the files NONROAD.EXE
and NONROAD (which is a shortcut to run the NONROAD.EXE program).
Under Misc/Background uncheck "Always suspend."  If desired, you can
also uncheck the "Close on Exit" box in Properties: Program to keep
the DOS window open after a model run completes.  

If using Windows 3.1 use the PIF Editor to edit NONROAD.PIF to make
the corresponding changes to allow NONROAD.EXE to run in the
background.  

Thank you,
NONROAD Engine Emission Modeling Team
Assessment and Modeling Division, US EPA

Email:  nonroad@epa.gov
Fax:    734-214-4939
Web:    www.epa.gov/oms/nonrdmdl.htm
US mail:  US EPA Assessment and Modeling Division
          2000 Traverwood Drive
          Ann Arbor MI 48105
