148. A cast iron or steel production process must not emit particles into the atmosphere in excess of the emission limits listed respectively for new plants and existing plants in Schedules C and F.
In addition, if a cupola is used, it must not emit into the atmosphere carbon monoxide in a concentration greater than 1,000 ppm.
O.C. 501-2011, s. 148; O.C. 1228-2013, s. 25.