Within the oil sands area, we actually have only one study, which was conducted under the northern rivers ecosystem initiative. It looked at the potential effects of natural hydrocarbon deposits and seepage on fish health. We used wild fish populations that occurred in the regions, and in fact, in that study, which was published in 2003 and scientifically peer reviewed, we indicated that we did see both hydrocarbon exposure in natural fish populations and elevated stress activities in these fish. Both related to areas near the oil sands but also to natural hydrocarbon deposits.
Beyond that, we have actually done no additional in-field studies looking at fish health effects.