Abstract
Ambient Pb concentrations measured over a 30 mo span around three secondary Pb smelters in the City of Winnipeg, Manitoba, Canada are statistically analyzed. The results obtained are compared with the provincial regulatory air quality guideline. The contribution of smelter emissions to high Pb levels that exceed the provincial guideline is also demonstrated. It is concluded, by inference, that the Secondary Lead Smelter National Emission Standards Regulations were effectively implemented.
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