20. (Replaced, O.C. 501-2011)Sandblasting: Dust emissions resulting from dry sandblasting operations must be controlled by using an enclosure or screen in order to confine the dust inside the spaces thus enclosed or closed, except in the case of a metal bridge.
This section applies, mutatis mutandis, to wet-type sandblasting operations when there are dust emissions that can be seen in the atmosphere more than 2 metres from the emission source.
R.R.Q., 1981, c. Q-2, r. 20, s. 20; O.C. 501-2011, s. 215.