As part of a 3 year study evaluating the effectiveness of permeable pavement and bio-swales under southern Ontario climate conditions a number of older bioretention areas were surveyed to assess the effect that age may have on various aspects of the infiltration practice.  Soil quality was assessed to determine the extent to which road runoff contaminants build up in soils over time.

This University of Toronto Scarborough campus bioretention was constructed in 2006 across from the N’sheemaehn Child Care Centre.  The bioretention is well landscaped with lush vegetation, rock swales, wood chips and an underliner.

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