You talked about putting fees on the water usage, of course, and increasing scientific research. Given the cost of extracting a barrel of oil from the tar sands today—I'm sure you must have done some studies; by implementing all of the things you're suggesting here, there would be a cost to it. How much of a cost do you think would be added on a per barrel cost basis if what you're recommending were carried out to its fullest extent? What would that raise the cost of extraction to?
