23. Recovered dust: Dust recovered by dust collector systems must be handled and transported in such a way that there will be no loss of dust into the atmosphere visible more than 2 m from the source of emission. Where the dust is not recycled, it must be stored, deposited or eliminated on the ground, provided the required measures are taken to prevent any emission of dust into the atmosphere visible more than 2 m from the source of emission.
R.R.Q., 1981, c. Q-2, r. 25, s. 23.