Elm Drive Bioretention.JPG|[[Bioretention]] cells on Elm Drive, Mississauga, with vertical sides and hardscape perimeter receive road runoff via leader pipes from road catch basin [[inlet |inlets]]. | Elm Drive Bioretention.JPG|[[Bioretention]] cells on Elm Drive, Mississauga, with vertical sides and hardscape perimeter receive road runoff via leader pipes from road catch basin [[inlet |inlets]]. |