Abstract
During the period from June 1982 to March 1983, there was a prolonged shutdown of the INCO and Falconbridge smelters at Sudbury, Ontario. Taking advantage of this opportunity, the Air Resources Branch of the Ontario Ministry of the Environment undertook a detailed analysis of the impact that the resulting emission reductions had on the atmospheric deposition of acidity and SOX in Ontario. This paper summarizes the various meteorological analyses and mathematical modeling estimates that were carried out in order to determine the contribution of the Sudbury smelters to atmospheric deposition in Ontario. For sulfates, the Sudbury contribution to the total wet deposition was typically less than 15% at the receptors studied. Furthermore, the smelters were found to contribute on the order of 10 to 20% of the total dry deposition of S compounds in central and northeastern Ontario, and less than 10% elsewhere.
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Lusis, M.A., Tang, A.J.S., Chan, W.H. et al. Sudbury smelter impact on atmospheric deposition of acidic substances in Ontario. Water Air Soil Pollut 30, 897–908 (1986). https://doi.org/10.1007/BF00303356
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DOI: https://doi.org/10.1007/BF00303356