Q-2, r. 7 - Regulation respecting pits and quarries

Full text
34. Standards: The operation of a quarry must not emit into the environment impulsive or discontinuous seismic waves whose ground speed, measured at less than 30 m from any structure or immovable referred to in section 11 or from any artesian well, is greater than 4 cm/second.
R.R.Q., 1981, c. Q-2, r. 2, s. 34.