We have had studies actually quantifying the amount of both naturally occurring and other industrial-related contaminants in that system. The monitoring of many of those is done by the Province of Alberta. As I mentioned, we have one water quality station near Wood Buffalo National Park that looks at standard nutrient and other water quality parameters. We have research studies that have assessed contamination levels both in sediment and in water over a number of years within this basin.
On March 12th, 2009. See this statement in context.