Q-2, r. 19 - Regulation respecting the landfilling and incineration of residual materials

Section 91 Disposition versions

2020-09-17

91. When the height of the residual materials deposited in a trench reaches the ground surface at the perimeter of the trench area, the trench area must be covered with a soil layer at least 60 cm thick including, in its upper portion, a layer at least 15 cm thick that is suitable for vegetation. The latter layer may also consist of a layer not more than 30 cm thick of another material that is suitable for vegetation.

The trench cover may also consist of soils containing contaminants in a concentration equal to or lower than the limit values set out in Schedule I to the Land Protection and Rehabilitation Regulation (chapter Q-2, r. 37). Those limit values do not apply to contaminants that do not originate from human activity.

In order to allow the water to flow away from the trench area and limit soil erosion, the final cover must also be graded to a slope of at least 2% without exceeding

(1)  5%, if the slope at the perimeter of the trench area does not exceed that percentage; or

(2)  the percentage of the slope at the perimeter of the trench area, if that slope is greater than 5%.

Not later than 1 year after installation of the final cover, the final layer must be given a vegetative layer. Damage such as holes, fissures or subsidence that may occur in the final cover must be repaired immediately to prevent water from pooling, until the trench area has been fully stabilized.

The provisions of sections 34 to 36 relating to quality assurance and control apply, with the necessary modifications, to the final trench cover prescribed by this section.

O.C. 451-2005, s. 91; O.C. 451-2011, s. 21; O.C. 868-2020, s. 27.

2012-09-01

91. When the height of the residual materials deposited in a trench reaches the ground surface at the perimeter of the trench area, the trench area must be covered with a soil layer at least 60 cm thick including, in its upper portion, a layer at least 15 cm thick that is suitable for vegetation. The latter layer may also consist of a layer not more than 30 cm thick of another material that is suitable for vegetation.

With the exception of the layer of soil or other material suitable for vegetation, the trench cover may also consist of soils containing contaminants in a concentration equal to or lower than the limit values set out in Schedule I to the Land Protection and Rehabilitation Regulation (chapter Q-2, r. 37). Those limit values do not apply to contaminants that do not originate from human activity.

In order to allow the water to flow away from the trench area and limit soil erosion, the final cover must also be graded to a slope of at least 2% without exceeding

(1)  5%, if the slope at the perimeter of the trench area does not exceed that percentage; or

(2)  the percentage of the slope at the perimeter of the trench area, if that slope is greater than 5%.

Not later than 1 year after installation of the final cover, the final layer must be given a vegetative layer. Damage such as holes, fissures or subsidence that may occur in the final cover must be repaired immediately to prevent water from pooling, until the trench area has been fully stabilized.

The provisions of sections 34 to 36 relating to quality assurance and control apply, with the necessary modifications, to the final trench cover prescribed by this section.

O.C. 451-2005, s. 91; O.C. 451-2011, s. 21.