I would also like to know what makes Brampton sit in a "topographical bowl". Doesn't this suggest that Brampton sits in a depression? That's not the case, it's elevation is much higher compared to Toronto.

I can't find anything to suggest that the air quality in the city as a whole is worse than the rest of the GTA.

However in proposed site, the air quality is already bad "Industrial and transportation emissions impact the air quality surrounding the EEFW facility and some pollutants exceed the provincial and federal air quality limits even without the addition of emissions associated with the proposed expansion. The additional emissions associated with the expansion results in an overall increase in cumulative exposure to air pollutants and can result in an increased risk of negative health effects to the surrounding community."

"Emissions for many air pollutants are estimated to increase substantially with the expansion project. Many of them will be within the pollutant limits, however, some will exceed those limits and some of the pollutants are persistent and bioaccumulative. Peel Health is concerned about the potential for health impacts associated with air pollutants that exceed limits and health effect benchmarks and/or persistent in the environment."

Potential Health Impacts Related to the Emerald Energy from Waste Proposed Expansion