90. Final cover: As soon as the filling of a dry materials disposal site is completed to a depth of 60 centimetres or 120 centimetres below the profile of the surrounding land, in accordance with the cases contemplated in section 45, the operator of a dry materials disposal site must then apply the final cover in the manner contemplated in section 45.
R.R.Q., 1981, c. Q-2, r. 14, s. 90.