I can't answer that directly, because it will be verging on legal advice, but I think I can answer at least the beginning of your question.
Certainly it's not unusual in federal statutes, particularly in areas of overlapping federal and provincial jurisdiction, to have clauses at the beginning of a bill that set out the ambit of the federal authority. It often is referred to, particularly if you look at environmental statutes, as federal lands, undertakings, etc. Those types of things are not unusual in federal statutes.
I think the other part of your question did look like legal advice, so I'll stop there.