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

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24. An engineered landfill may also be sited in a rock quarry or a mine so long as
(1)  the quarry or mine is an open pit;
(2)  the quarry or mine floor is situated below the groundwater level; and
(3)  the average groundwater infiltration rate, calculated on an annual basis, is 5 x 10-4 m3 or less of water per square metre of quarry or mine wall situated below the groundwater level.
O.C. 451-2005, s. 24.