187. A sulphuric acid plant used to reduce emissions into the atmosphere of sulphur dioxide from a primary copper production plant must fix the sulphur in the gases to be treated at not less than 96% efficiency, and must not emit more than 0.075 kg of sulphuric acid into the atmosphere, including sulphur trioxide, per ton of sulphuric acid calculated at 100%.
O.C. 501-2011, s. 187; O.C. 1228-2013, s. 34.