I have to agree; it's a huge question. There is a lack of regulation right now, to be honest. The concern is very great. There is extensive shale gas development in northeastern B.C., and there have been efforts to expand into major salmon watersheds.
It does take a huge volume of water. Depending on the type of material you're fracturing, the water can come back in an unusable form and the water quality is greatly degraded, so there is strong opposition in some of the really pristine habitats. Jeff referred to the Skeena River, which is in central northern British Columbia. There are areas there that are in pristine condition, and that is where Shell Gas wanted to develop. I'm sure you're aware there was extremely strong opposition to that, partly because there is a lack of a regulatory framework at this time.
I think you're touching on a problem that many people, I think even internationally, are looking at—you hear mixed reviews. Some areas seem to be okay with it. They aren't finding heavy contaminants. Other areas are being shut down because the contaminant loads in the fresh water are unacceptable. It may be very site specific in terms of what the real regulation has to be.