We have information about specific areas. If you were asking me whether there is a surface water release from the Athabasca oil sands that is causing an impact in the Athabasca watershed, I would say no, because there is no surface water released to the system. Is there a groundwater release? Yes, I know of probably two areas where there could be a groundwater release. Is it of sufficient volume and magnitude to cause an impact? I would suggest possibly not, but there might be further research needed in that area to determine that.
In terms of aerial transport and deposition, that area has not been widely explored at all, and I could not give you an opinion on that aspect.