New Ontario discharge levels

New Ontario government regulations will require mining companies operating in the province to reduce emissions of five toxic heavy metals and cyanide by an average of 40% by 1996.

Mines and metal refineries will have to comply with the regulations which affect emissions of copper, lead, nickel, zinc, arsenic and cyanide. The reductions are based on 1990-91 levels. Discharge levels of suspended solids must be cut by 23%.

Also, mine effluent will have to meet the province’s standard water toxicity tests.

Mining is one of nine Ontario industries being asked to meet new water pollution targets under the Municipal-Industrial Strategy for Abatement.

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