32. Drilling: Dust emission from drilling operations carried out in a quarry must be controlled by the installation of a dust collecting apparatus linked to a dust collector system allowing not more than 50 mg/m3 of particulate matter to be emitted into the atmosphere.
R.R.Q., 1981, c. Q-2, r. 2, s. 32; O.C. 476-91, s. 5.