An air dispersion model is a mathematical tool that is used to assess point of impingement concentrations* that are then compared to ministry air standards and guidelines.
*A point of impingement is the point at which a contaminant contacts the ground or a building.
Resources
- Guideline A-11: Air Dispersion Modelling Guideline for Ontario
- Approved Dispersion Models
This information is also available at the Public Information Center.
SCREEN3
ISCPRIME (to be phased out as of February 1, 2012).
AERMOD
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Regulation 346 Models
Appendix to Regulation 346 General – Air Pollution
Models in Appendix to Regulation 346
Models in Appendix to Regulation 346 User's ManualSame Structure Contamination
ASHRAE
Chapter 44 (Building Air Intake and Exhaust Design) of the ASHRAE Handbook — HVAC Applications, published by the American Society of Heating, Refrigerating and Air-Conditioning Engineers. (As amended and revised from time to time.) - Other Dispersion Models (Ministry Approval Required For Use)
CALPUFF
CAL3QHCR
CALINE-4
SDM - Information Required for Running the Approved Models
This information is also available at the Public Information Center
Approved Dispersion Models – Air Ontario Regulation 419/05: Air Pollution – Local Air Quality (as amended) Version #2 (May 14, 2007)
Ontario Regional Meteorological Data
Ontario Digital Elevation Model Data
- Air Dispersion Models
- Ontario Regional Meteorological Data
- Northern Region - Thunder Bay, Kenora
- Northern Region - Sudbury, North Bay, Sault Ste. Marie, Timmins
- Eastern Region - Kingston, Cornwall
- Eastern Region - Ottawa, Peterborough, Belleville
- Southwestern Region - Barrie, Owen Sound
- Southwestern Region - London, Windsor, Sarnia
- Central Region - Toronto, York-Durham, Halton-Peel
- West Central Region - Hamilton, Niagara, Guelph
- Ontario Digital Elevation Model Data
