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This review summarizes the performance of Canadian metal mines with respect to the selected standards prescribed by the Metal Mining Effluent Regulations, which came fully into force on December 6, 2002.
The Regulations require sampling of effluent and the submission of quarterly and annual reports of results within specified time limits. The data used in this review were provided to Environment Canada under section 22 of the Regulations, which requires mines to submit annual reports to Environment Canada. The format for these reports is specified in Schedule 6 of the Regulations. The reports include:
In 2010, 105 mining facilities operating in Canada were subject to the Regulations. No metal mines were subject to the Regulations in Alberta or Prince Edward Island. Those facilities subject to the Regulations are listed in Table 1 and their locations are illustrated in Figure 1. Additional information on the facilities is provided in Appendix B.