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A new way to view air dispersion modeling software...

We have been providing quality air dispersion modeling software, training, and expert support for over 20 years. Throughout that time, our ability to listen to our customers needs has made our software the most user-friendly product in the industry.

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BEEST 11.09 is available

Version 11.09 of the BEEST Suite air dispersion modeling software is now available to all registered users with current maintenance.


  • Added a menu item to the Results menu for recombining multiple sets of partitioned AERMOD output files
  • Changed BEEST to write emission rates for buoyant line sources in grams per second (the EPA User's Guide incorrectly lists g/s/m2 as the emission rates)
  • Fixed bug in the Edit Sources form, which incorrectly divided the emission rates for AREAPOLY sources by the source area when entering the emission rates in g/s/m2
  • BEEST no longer displays an error message when emission rates are blank for AREAPOLY sources
  • Fixed bug in importing background concentrations from .DTA files
  • Fixed bug to convert meters to feet when filling in the profile base elevation in Met Options


  • Added a menu item to the Edit menu for clearing undo history


  • The list of plot files is resized when the window is resized

A webinar about the new features in BEEST 11.09 will be presented on October 24, 2017 at 3:00 p.m. CDT. Click here to sign up for the webinar.

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