In that work and the work that continued, we sampled a few more than 500 sites or drinking-water sources across Quebec. Two of those 500 were without any PFAS detected, because our instruments were not good enough, I guess, but we have very good detection limits. Not being able to see PFAS is pretty rare. Within that dataset of about 500, I guess the average is around two nanograms per litre for the sum of all PFAS detected. At La Baie, we were between 100 and 200 in the tap water or the wells. Some of the wells had up to 300. There's no way that, with an average of two and a 95th percentile in terms of the distribution within that Quebec dataset—the 95th was at 13—if you have samples that are 100 or 200, it's just random contamination. There's no way.
In that case, the assumption that it comes from the military base is an assumption. We can't demonstrate that unless we know exactly what had been used in terms of foams. Basically, these would be coming from firefighting foams that would have been used at the airport, or for some of the military exercises that have been done at Bagotville. The pattern of the PFAS that we see in the water is compatible with its being residue from firefighting foam, but we can't prove it.