Episodic Oily Slicks in rivers and streams in South Lake Simcoe
Paul Harpley FI’06 is continuing his exploration and research in South Lake Simcoe of episodic slow moving silvery sheen oily slicks in river and streams. Past documentation of occurrence episodes of slicks that take place typically after major rain events. Previous novel field methods by Harpley of spring/summer application of biosolids upstream on fields, have implicated causes of this phenomenon, essentially undocumented in Ontario. The biosolid material is rough filtered human waste sewage. There is concern of bacteria and pharmaceuticals on water quality and fisheries resources risk.