31. Secondary sources of contamination: Where the emissions of dust from access roads, parking areas, traffic zones or piles of aggregate material from a pit or quarry produce one or other of the effects enumerated in the second paragraph of section 20 of the Act, the operator must take the required measures to prevent such emissions in order to cause such effects to disappear.
R.R.Q., 1981, c. Q-2, r. 2, s. 31.