The Smkinven program allows you to fill in stack parameters for sources that do not have any. The details of how this is done are described in Section 2.9.9, “Fill in and check point-source stack parameters”. To change the defaults, the PSTK input file to Smkinven must be edited to use different stack parameters and/or include different state/county and SCC codes.

To discover what if any default stack parameters are being used for your SMOKE processing, review the Smkinven log file, which will contain warnings about all stack parameters that were filled in and changed from the inventory values.