Thank you for that question.
Indeed, in the space of environmental health and some of these health contaminants, there is jurisdiction within the provinces and territories that applies to certain contaminated sites. In those instances, there's very close collaboration between the federal government and the province or territory on the advice and guidance that are provided to the custodian.
Ultimately, if the contamination is in a provincial space under provincial jurisdiction, it would be the provincial authority that guides and provides advice to custodians. The federal government would be a very close collaborator in providing support as necessary.