Q-2, r. 4.1 - Clean Air Regulation

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132. A new potline must not emit total fluorides into the atmosphere in excess of an annual limit of 0.95 kg per ton of aluminum produced, or in excess of a monthly limit of 1.25 kg per ton of aluminum produced.
The limits prescribed by the first paragraph also apply to existing centre-worked prebaked anode type potline.
O.C. 501-2011, s. 132.