They have provided for the exact same type of exemptions under that act in the last two years, so there is precedent established for exemptions. In this case, under the NWPA, by ministerial order they've exempted certain classes of works and undertakings, and in the case of the Navigable Waters Protection Act, they have gone and exempted pipeline crossings.
Il n'y aurait aucune exigence en matière de préavis, aucune consultation publique obligatoire sur de telles exceptions ministérielles — concernant, par exemple, les croisements de pipelines — si on suit le même modèle que dans le cas de la Loi sur la protection des eaux navigables.