Judging by the past, you can look at two elements in the Canadian Bill of Rights. In section 1, Parliament has declared a number of rights that in its judgment had existed and shall continue to exist, and that is where the new right to a healthy and ecologically balanced environment would go.
Then those rights are put to work through section 2 of the Canadian Bill of Rights. Section 2 directs that the laws of Canada shall be interpreted and applied so as not to infringe the rights in section 1. And if they cannot be sensibly interpreted and applied so as not to infringe the rights in section 1, then a court can find the relevant law inoperative, which means it will not be applied in a particular case.