The Ontario Ministry of the Environment (MOE) has proposed amendments to O. Reg. 419/05 (Air Pollution – Local Air Quality). The amendments would, among other things, introduce new or updated emissions standards for nine contaminants: acrolein; benzene; 1,3 – butadiene; hexavalent chromium (and chromium and chromium compounds divalent and trivalent); dioxins, furans and dioxin-like polychlorinated biphenyls; manganese and manganese compounds; nickel and nickel compounds; polycyclic aromatic hydrocarbons; and uranium and uranium compounds. For each of the nine contaminants, the MOE would also establish new or updated Upper Risk Thresholds (URTs), emissions beyond which certain reporting requirements under O. Reg. 419/05 are triggered. The new standards would take effect five years after they are adopted, although the URTs would be immediately applicable.

The MOE is accepting comments on the proposed amendments until September 29, 2009.

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