Stack testing, ambient monitoring, emission inventory, AERMOD dispersion modelling, and NPRI reporting: supporting environmental permitting for industrial facilities and energy projects.

When is AERMOD dispersion modelling required?

Ontario MECP requires AERMOD modelling for new or modified ECA applications involving air emissions. It demonstrates that contaminant concentrations at property boundaries meet provincial standards (O.Reg. 419/05). Modelling is typically required for industrial, institutional, and commercial sources above de minimis thresholds.

Key Deliverables

• Emission inventory (point, area, volume, and fugitive sources)
• Stack testing supervision and report review
• AERMOD dispersion modelling with receptor grid analysis
• Comparison to Ontario Ambient Air Quality Criteria (AAQC) and POI standards
• ECA application or amendment support

What is NPRI reporting?

The National Pollutant Release Inventory (NPRI) requires Canadian facilities to report releases, disposals, and transfers of 300+ substances when they exceed reporting thresholds. Reporting is mandatory under CEPA. We calculate your emissions and prepare the online submission.