341. The following activities are exempted from authorization pursuant to this Division when carried out solely in a floodplain:(1) forest development activities, except silvicultural drainage and road work;
(2) excavation work for underground linear public utility infrastructures not already excluded by another provision of this Chapter, except hydrocarbon transportation infrastructures;
(3) the laying out of land for recreational purposes, except a golf course or campground;
(4) work to construct an irrigation pond or artificial pond or lake of no more than 300 m2 in area, on the condition set out in subparagraph c of paragraph 2 of section 173;
(5) work to construct residential buildings in a floodplain with a 100 year flood recurrence level, including accessory buildings and works and the necessary access;
(6) the cultivation of non-aquatic plants or mushrooms and tree-clearing work to prepare the land for cultivation.