The simple answer to your question is--
Excuse me. I'm hearing myself talk and we don't want to do that.
That will be possible, certainly.
You could do it by amending the Canadian Environmental Protection Act and the Species at Risk Act. But it seems to me that there are probably two reasons for not doing it that way.
One of them is that in a way that would almost hide the changes. I think that, much like a human rights act or something, there's a communication or a national pride value in having something called an environmental bill of rights. This is something that I would think we would actually want to kind of hold up proudly for Canadians rather than interspersing it through as subsection 112(13) in a variety of other acts.
Secondly, just from an efficiency viewpoint, you would have to amend a lot of acts. This bill will probably apply to, I would guess, something like 15 to 20 different federal statutes dealing with environment, land use, and resource management. You would essentially be grafting these exact provisions onto 15 or 20 different statutes, and it may actually be more efficient just to do the one. I do note that it does actually amend the Canadian bill of rights, but it only deals with one part--just the right.