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Summary Review of Performance of Metal Mines Subject to the Metal Mining Effluent Regulations in 2013

5. Overall Assessment of Results of Rainbow Trout Acute Lethality and Daphnia magna Monitoring Tests in 2013

  • Overall, the metal mining sector has achieved a compliance rate of 96.8% with respect to effluent that is non-acutely lethal to rainbow trout. A low compliance rate was achieved by the Vezza Mine facility in Quebec.
  • In 93.6% of the Daphnia magna monitoring tests, the mortality rate was less than the targeted level of 50%.
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