From Air Quality Services
Source prepares atmospheric dispersion modeling studies when required for air permit applications or upon request of its clients. These studies are performed to determine if harmful air quality impacts will occur either during routine plant operations or plant emergencies. Source maintains an extensive library of air modeling guidelines, textbooks; and manuals, as well as all EPA approved modeling codes and associated computer software. These modeling codes include standard and special purpose EPA regulatory models, state developed models, vehicle emission models, numerous screening models and various emergency release models. Current modeling information is always available for use by Source via a computer modem connection with the air modeling 'bulletin board' of the U.S. EPA .