This scene is from McMaster University, in front of the Life Sciences building. You can see the oily water in the puddle.
McMaster University abuts Cootes Paradise, so of course any developments there have a potential (often negative) impact on the natural lands to the North and West of the campus.
A look at paved surfaces at the campus, and any further development that encroaches on Cootes, needs attention. Replacing paved with permeable surfaces would help filter contaminants, and take the burden off the water collection/treatment systems which can be overwhelmed as water collects on paved surfaces before being channeled into these catch basins.
Do you have any concerns relating to Mac and the Environment? Let us know in the comments section!