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Environment Canada reports – Mount Polley mercury and lead stats

Environment Canada – Releases of Mercury to the Environment

In 2014, national mercury (Hg) emissions to air from human-related activities totalled 3.9 tonnes (t), which is a 3% (about 0.1 t) decrease from the 2013 level, and a 89% decrease (30.8 t) from 1990, the baseline year of this time series. On August 4, 2014, a dam securing a tailings pond from the Mount Polley mine in central British Columbia breached, spilling mining waste, including 2.1 t of Hg, into Polley Lake and surrounding waters. As a result, the amount of Hg released to water in 2014 was 2.32 t, about 10 times higher than the 2013 reported level of 0.21 t and a 518% increase (1.95 t) from 2003, the baseline year of this time series.  …Full report: https://www.ec.gc.ca/indicateurs-indicators/default.asp?lang=en&n=2E4A71BD-1

Environment Canada – Releases of Lead to the Environment

In 2014, national lead (Pb) emissions to air from human-related activities totalled 136 tonnes (t), which represents an increase of 5% (about 7 t) from the 2013 level, and is 89% (1153 t) lower than in 1990. In 2014, national Pb releases to water were 146 t of Pb, more than 10 times the total releases reported in 2013 and about 500% higher than the releases reported in 2003, the baseline year of the time series. In central British Columbia, a dam securing a tailings pond from the Mount Polley mine breached  on August 4, 2014, spilling mining waste into Polley Lake and surrounding waters. That breach alone released 134 t of Pb to water, or 92% of the total reported for Canada in 2014.  …Full report: https://www.ec.gc.ca/indicateurs-indicators/default.asp?lang=en&n=4F1AE114-1

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