What you saw were the seepage dikes and the channels around the tailings ponds to capture any of the seepage. These tailings ponds are not lined, so systems are in place to capture any seepage and return it to the tailings ponds. A study out of the University of Waterloo is looking at groundwater, with a view to ensuring that there's no seepage. What they're trying to use are these naphthenic acids, looking at their fingerprint in the tailings ponds and trying to learn whether there is seepage into adjacent water bodies, like the Athabasca River, or groundwater.
