Strictly speaking, it's not necessary because all laws are interpreted in light of the Constitution, so a federal law has to be exercised in federal jurisdiction.
Moreover, there's already a section in CEPA—section 2—that covers the idea. It says that “the Government of Canada shall, having regard to the Constitution”, administer the act, so the idea of being within your jurisdiction is already in CEPA. In fact, if you add it to this part, it might introduce some confusion about whether it's a concept that applies only to this part or to other parts of CEPA.