New AERMOD model version required by April 1st, 2018

On October 2, 2017 the MOECC pre-notified stakeholders of its intent to adopt AERMET/AERMOD v. 16216r on April 1st, 2018, as an update to the current regulatory version in Ontario (v. 14134).The MOECC is requiring that all modelling should be carried out with the new version, if that modelling will be submitted after April 1st.

The change from 14134 to 16216r will have variable effects depending on the types of sources at a facility. Emissions from tall stacks (above building level) may result in higher ground level concentrations (all other factors remaining the same) whereas low-level sources may result in lower ground level concentrations (all other factors remaining the same).

Although not a requirement until April 1st, Airzone advises all applicable facilities to remodel their air emissions using the new model as soon as possible to check if exceedances of air quality criteria may be caused.

For more information on completing your due diligence studies for the new model please contact: