I can't put a number on what the green infrastructure costs would be, but I know that with the storms we're having now, we're seeing more severe and more frequent severe storms occurring. We believe it's because of the changing climate as well. What used to be one-in-100-year storms are now being talked about by many people as being one-in-10-year storms: it's that kind of rate.
One of the things for the Toronto and region area of concern is the City of Toronto's wet-weather-flow master plan, which is a huge plan at $1.5 billion. There is a component of it that deals with the Don River combined sewer overflows and the central waterfront collection system to collect combined sewer overflow to help prevent some of that mixture of stormwater and sewage from going directly into the lake, being held back to be treated. It will need support by all levels of government, and it is the most important step to the delisting of the area of concern.