Q-2, r. 4.1 - Clean Air Regulation

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170. Every petroleum refinery must have a system that continuously measures and records the opacity of the gases emitted into the atmosphere by the catalyst regeneration process referred to in section 168, or the gas particle concentration, and the gas carbon monoxide concentration.
This section applies to existing petroleum refineries as of 30 June 2013.
O.C. 501-2011, s. 170.