Air Quality Modelling Update for 2009

by Barry
(Calgary)

Alberta Environment New Site

As of July 1, 2009, Alberta Environment no longer accepts ISC modelling, and studies using AERMOD and CALPUFF will be the norm.

AENV came up with their new Air Quality Modelling Guideline in the spring. It took effect July 1, and with that change, ISC modeling of any type has been decommissioned for regulatory purposes. So CALPUFF
is now the model of choice within my current work at Calvin Consulting Group Ltd.

It is more cumbersome (requires increased expertise and computer time to execute), but may provide more favourable results. As a result, all air modelling work will become more time-consuming than ever before.

I have also been informally notified that revisions to the air quality standards (AAAQO) are pending and will become more stringent over the course of the next two years or so. So we’ll keep that in mind as we proceed with all of the ongoing/forthcoming projects and might find that it should be preferable to get our approvals for the plants with greater emissions sooner rather than later.



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