When a facility emits atmospheric contaminants, it is essential to estimate expected concentrations at points of impingement, particularly near residential areas and sensitive receptors (schools, hospitals, etc.). Without structured modeling, there is an increased risk of non-compliance, requests for additional information, and authorization delays.
During the design or process optimization phase, small changes (stack height, exit velocity, source location, emission rates) can have a major impact on ground-level concentrations. Without simulation, there is a risk of over-engineering costly equipment or, conversely, discovering late in the process that adjustments are necessary.
The value of a report depends on data quality (emission rates, meteorology, topography), assumptions, and model selection. An incomplete or poorly documented study may be deemed inadmissible, leading to multiple iterations and harming the credibility of the file. HDS Environment's studies have been recognized for decades by relevant government bodies (Ministry of the Environment, City of Montreal, etc.).
HDS performs atmospheric dispersion studies using Level I or Level II models depending on the context and applicable expectations. We frame the methodology (sources, scenarios, receptors, meteorology, terrain) and document assumptions to produce a robust and defensible study.
We evaluate concentrations at points of impingement and produce visual representations (e.g., isocontour maps) to identify the most affected areas and support concrete decisions: equipment localization, separation distances, mitigation measures, or design adjustments.
HDS performs numerical simulations to optimize emission parameters for stacks and sources (height, exit velocity, emission rates, location, etc.). This approach allows for testing alternatives, performing parametric analyses, comparing scenarios, and selecting effective, cost-efficient, and realistic solutions compatible with engineering and operational constraints.
Rigorous modeling preceded by a clear scope reduces uncertainty, limits back-and-forth communication, and strengthens the admissibility of filings. You secure the authorization process by providing documented proof of the expected impact on the surrounding area.
By optimizing parameters (stacks, location, emission rates) early on, you avoid late-stage corrections, over-engineering, and misplaced investments. Technical choices become better targeted and more profitable.
Points of impingement, compared scenarios, and isocontour maps facilitate understanding and decision-making (internally, and with authorities or stakeholders). You gain a concrete tool to prioritize measures and explain the chosen solutions.
Professional services to assess the presence of asbestos-containing materials, production of asbestos removal specifications, monitoring of removal work, establishment and monitoring of inspection records of materials likely to contain asbestos. Under supervision of our Certified Hygienists (ROH).
Combining environmental expertise and industrial hygiene, HDS supports companies in the proactive management of risks and compliance. We protect your personnel and facilities through cutting-edge expertise and personalized guidance.
