Modeling Environment

• Import a map of the assessment target site in various graphic formats
• Select rural or urban receptor environment for automatic parameterization of the various atmospheric dispersion model

Meteorological Data

• Import meteorological data text files comprising (for each datum): date, time, wind speed, wind direction, temperature, atmospheric stability class, urban mix height and rural mix height
• Wind speed profile correction for each receptor environment and for each atmospheric stability class
• Display meteorological data as wind rose and stability rose for the various daily periods (day, evening, and night)

Chemical Compound Assessed

• Choice of chemical compound to be assessed from a large evolutive data base comprising over 400 chemical compounds and including information on terminal velocity, toxicity thresholds, lower limits of explosives and flammability, and the exposure thresholds of various standards

Sources

• Choice of sources: emission point or stack, emitting surface, instantaneous source
• Source characterization: height, diameter, length, width, mass or surface flow rate, gas ejection velocity, gas temperature, time variability of flow

Receptors

• Choice of receptor: point, line, surface
• Receptor characterization: dimensions, measurement height

Modeling

Choice of atmospheric dispersion models:

• Gaussian
• CUM (Montreal) model under By-Law 90
• Puff

Choice of super elevation:

• EPA
• CUM
• Holland