Yes it is really true, you are not dreaming! On August 17, 2010 EPA released a beta version of the long awaited AERSCREEN model (the screening version of AERMOD). For more information, click here.

Oris is currently evaluating beta AERSCREEN and will be providing comments back to EPA by September 17, 2010. We are also working diligently to incorporate it into our product offerings and will keep you notified of our progress.

Version 2.1 of our SO2Post software is now available. This release includes the following features:

• Added the ability to calculate Significant Impact Level (SIL) value

SO2Post is free to download for all BEEST users currently in maintenance. Non-BEEST users may purchase it for $150.

Version 2.0 of our NO2Post software is now available. This release includes the following enhancements:

• Added the ability to calculate Significant Impact Level (SIL) concentration
• Added the ability to process background concentration values
• Program writes the NO2 design value to a text file

NO2Post is free to download for all BEEST users currently in maintenance. Non-BEEST users may purchase it for $150.