CEMCSoft, Division of Corporate EMC

Environmental Assessment Consulting Services


Where the permitting process looks at the impact of a single facility on the surrounding environment and addresses regulatory issues, environmental assessment is broader in scope: it looks to evaluate the sources of discharge to the environment and encompasses all affected environmental compartments. These broader assessments of impact to the environment generally involve input from many specialized disciplines, and are often coordinated by a consulting or engineering group responsible for assemblinbg the required disciplines to execute the total project. CEMC contributes our expertise to the meteorological and air dispersion aspects of such larger environmental assessments.

Long Range Transport Studies

The emission of pollutants from large sources and whole regions can travel hundreds of kilometres, affecting the air quality in neighbouring jurisdictions and can also lead to chemical transformations which form ozone and acidic precipitation, impacting whole regions and countries. Some of the studies to which we have contributed include:

Noranda Horne Smelter, Quebec

Study of the acid rain and heavy metal impact of the Noranda Horne smelter in Quebec, Ontario and the Maritime Provinces. CEMC set up a monitoring network within Quebec to measure air concentrations of sulphur dioxide, sulphates, and metals such as mercury and precipitation sampling for sulphate, nitrate and acidity. We developed the Trans Lagrangian model for the transport and generation of acidifying pollutants to map out the overall impact on the surrounding environment.

Nanticoke and Lakeview Power Plants, Ontario

Modelling study of the long range transport from the Nanticoke and Lakeview power plants for Ontario Hydro (OPG).

Tar Sands, Alberta and Saskatchewan

Modelling study of the long range transport from the Tar Sands operations on Alberta and Saskatchewan.

Ontario Ministry of Environment, Environment Canada

Development of the Eastern Canada emissions inventory and the meteorological component of the ADOM Eulerian model under contract to the Ontario Ministry of Environment and Environment Canada.

Ontario Ministry of Environment

Development of detailed nitrogen oxides and toxic chemical emission inventories for Ontario Ministry of Environment.

Vale Inco, Sudbury

Evaluation of the impact of the Vale Inco smelter metal emissions on nickel concentrations and depositions in areas surrounding New York City.

Meteorological and Climatological Studies

The development of meteorological information for regional studies in valley and shoreline locations involves measurement and modelling studies of the flow regimes and dispersal characteristics, and subsequent modelling of contaminant dispersion. CEMC has conducted the following studies:

Hat Creek, British Columbia

CEMC carried out a study of the complex flows in the Hat Creek, BC mountain valley using minisonde and tetroon instruments, as well as surface and tower observations for BC Hydro. This involved setting up a meteorological network to determine the slope flows and circulation flows within the valley and their interaction with the flows outside the valley, and involved 4 seasonal campaigns to characterize the detailed flow structures.

Teck Lead Smelter, Trail

We carried out a study of the valley flows within the Columbia Valley at Trail and developed a model to simulate dispersion of sulphur dioxide in the complex flow regimes for the Teck Lead Smelter.

Nanticoke and Lakeview Power Plants, Ontario

We carried out field studies to characterize the shoreline dispersion environment at Lake Erie, and developed a Shoreline Fumigation Model to predict the impact of the OPG thermal power plants at Nanticoke and Lakeview.

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