20. The operation of a quarry or sand pit in a lake, a steady-flow watercourse or a riparian shrub swamp of one of those environments is prohibited.
The operation of a quarry or sand pit is also prohibited in a marsh or an open peatland.
The second paragraph does not apply to a quarry or sand pit whose operation in the environments referred to in that paragraph was authorized before 18 April 2019 neither to a quarry or sand pit established before 17 August 1977 that began operating in such environments before 18 April 2019.
236-2019O.C. 236-2019, s. 20.