Q-2, r. 7.1 - Regulation respecting sand pits and quarries

Section 32 Disposition versions

2019-04-18

32. Blasting carried out in a quarry must be performed in accordance with the following conditions:

(1)  no mineral substance is projected outside the quarry;

(2)  the particle velocity does not exceed 10 mm/s at the dwelling or public institution; and

(3)  air overpressure does not exceed 126 linear dB at the dwelling or public institution.

In a calendar year, the limit value prescribed by subparagraph 2 of the first paragraph may however be exceeded, up to a maximum of 15 mm/s, only once or up to a maximum of 10% of the total number of blasts during that period.

In a calendar year, the limit value prescribed by subparagraph 3 of the first paragraph may however be exceeded, up to a maximum of 130 linear dB, 2 times or up to a maximum of 20% of the total number of blasts during that period.

O.C. 236-2019, s. 32.

Not in force

In force: 2019-04-18

32. Blasting carried out in a quarry must be performed in accordance with the following conditions:

(1)  no mineral substance is projected outside the quarry;

(2)  the particle velocity does not exceed 10 mm/s at the dwelling or public institution; and

(3)  air overpressure does not exceed 126 linear dB at the dwelling or public institution.

In a calendar year, the limit value prescribed by subparagraph 2 of the first paragraph may however be exceeded, up to a maximum of 15 mm/s, only once or up to a maximum of 10% of the total number of blasts during that period.

In a calendar year, the limit value prescribed by subparagraph 3 of the first paragraph may however be exceeded, up to a maximum of 130 linear dB, 2 times or up to a maximum of 20% of the total number of blasts during that period.

O.C. 236-2019, s. 32.