180. A ferro-alloy production plant using one or more existing furnaces must not emit particles into the atmosphere in excess of the following limits:(1) 10 kg/t of finished product in the case of metallurgical grade silicon;
(2) limit values prescribed by Schedule C in the case of silicon purer than metallurgical grade;
(3) 7.5 kg/t of finished product in the case of other categories of ferro-alloys.
A process using one or more new furnaces must not emit particles into the atmosphere in excess of the limits listed in Schedule C.
O.C. 501-2011, s. 180; O.C. 1228-2013, s. 31.