Mr. Nelson Paterson (Director General, Economic Studies and Policy Analysis Division, Economic Policy Branch, Department of Finance) at the Natural Resources Committee

I could add some colour to that.

There are two approaches that have been used. The calculations were made by ISED for the federal government number, but basically they're just using different methodologies based on similar underlying assumptions about what the projects would be. It depends on what the PBO is choosing to use in their assumptions.