92. (Replaced, O.C. 501-2011)Zinc smelting plants: A zinc smelting plant must not emit into the atmosphere:(a) more than 50 mg of particulate matter per cubic metre of dry gas, under standardized conditions;
(b) as sulfur dioxide, more than 8% of the total sulfur introduced monthly into an existing zinc smelting plant, or more than 20 kg of sulfur dioxide per tonne of sulfuric acid at 100% produced by an existing sulfuric acid plant used to reduce sulfur dioxide emissions into the atmosphere;
(c) as sulfur dioxide, more than 4% of the total sulfur introduced monthly into a new zinc smelting plant, or more than 5 kg of sulfur dioxide at 100% produced by a new sulfuric acid plant used to reduce sulfur dioxide emissions into the atmosphere;
(d) more than 0.5 kg of sulfuric acid mist per tonne of acid at 100% produced, for an existing sulfuric acid plant used to reduce sulfur dioxide emissions into the atmosphere;
(e) more than 0.075 kg of sulfuric acid mist per tonne of acid at 100% produced, for a new sulfuric acid plant used to reduce sulfur dioxide emissions into the atmosphere.