By Kenny Lalonde, P.Eng.
Industrial projects operate within an increasingly stringent environmental regulatory framework, where the management of atmospheric emissions plays a central role. Once released, emissions are no longer under the control of the operator in terms of their impact. Whether for a new facility, a process modification, or a capacity increase, operators must demonstrate that their activities meet air quality standards and limit impacts on surrounding environments and neighboring communities.
In this context, atmospheric dispersion analysis is no longer merely a regulatory requirement addressed during project development. It has become a strategic decision-support tool, helping guide the design of industrial facilities toward solutions that are compliant, efficient, and responsible.
Understanding and anticipating atmospheric emission impacts
Any industrial activity generating atmospheric emissions raises complex challenges: the nature of contaminants, local meteorological conditions, the proximity of sensitive receptors, and multiple regulatory requirements. Without a rigorous analysis, these factors can jeopardize the issuance of required authorizations or result in costly adjustments late in the project, or even fines or a complete shutdown once operations are fully underway.
Atmospheric dispersion modeling makes it possible to simulate the behavior of contaminants in the air based on site-specific data and representative meteorological conditions. It provides a clear picture of potential concentrations at the property boundary and at sensitive receptors, serving as an objective basis to demonstrate compliance with MELCCFP requirements and applicable municipal regulations, or to develop design recommendations to achieve compliance.
Atmospheric dispersion as a design lever
Beyond regulatory compliance, atmospheric dispersion plays a key role in optimizing industrial projects. When conducted early, it allows different scenarios to be evaluated and technical decisions to be informed before implementation.
Modeling results can support, among other things:
- stack sizing and positioning
- logistics for raw material flows and on-site storage
- optimization of emission systems to the atmosphere
- assessment of the required performance of air treatment equipment
- definition of appropriate buffer zones aligned with urban planning and land-use compatibility considerations
This proactive approach reduces the risk of exceedances, limits late-stage modifications, and promotes integrated solutions aligned with the project’s environmental objectives.
An essential tool for odor management
In many industrial sectors, odor nuisances represent a major social acceptability issue. Atmospheric dispersion modeling can also be used to analyze odor propagation, determine impact zones, and assess the frequency of exceedances against applicable criteria.
These analyses support the implementation of odor mitigation strategies tailored to industrial and urban contexts, helping preserve the quality of life of nearby communities while ensuring the long-term viability of operations.
gbi expertise supporting sustainable industrial projects
At gbi, the Energy and Industrial team supports clients at every stage of their projects, from preliminary analysis to obtaining ministerial authorizations. Through a multidisciplinary approach, we combine atmospheric dispersion modeling, regulatory expertise, and emission system optimization to deliver customized solutions adapted to each site’s specific conditions.
Regardless of the project, our objective remains the same: to reconcile operational performance, regulatory compliance, and environmental impact reduction—for the benefit of businesses, communities, and the environment.
