Can I just add to that? I think the sense is, again, that the slowdown in the growth of the oil sands we're experiencing right now--and we'll see how it goes--will no doubt have an effect on cumulative water use and on cumulative air emissions.
As the members of the committee will know, the federal government and the Alberta government and Saskatchewan and others are working to move the technology on carbon capture and storage quickly with demonstration projects over the next number of years, which we think will be important in the oil sands as well as in other areas, such as in coal-fired generating plants, and so on.