212. Section 145 applies to a source of sporadic emission, other than a kiln or a clinker cooler, from a cement plant in operation on 30 June 2011 as of 30 June 2013. Until that date, the sources remain governed by the applicable provisions of section 42 of the Regulation respecting the quality of the atmosphere (chapter Q-2, r. 38) as it read on 29 June 2011.