[[File:Infiltration before cleanout infiltr.PNG|thumb|340px|An inlet to an infiltration trench during the fall in need of maintenance (TRCA, 2018).<ref name="example1" />]]
[[File:Maintenance of plants green roof.PNG|thumb|340px|Maintneance of the Green roofs filter bed and vegetation composition/condition being performed by staff (TRCA, 2018).<ref name="example1" />]]