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[[File:Sediment pad Toronto.JPG|thumb|450px|Another example of the City of Toronto's non-proprietary pre-treatment device, known as a "Sediment Pad" shown being used at the curb [[inlet]] of a [[bioretention]] cell on Danforth Av. to capture coarse sediment, trash and debris in influent entering the BMP.]]
==Overland sheet flow==
==Overland sheet flow==
The following pretreatement features are recommended where surface sheet flow is being directed to a BMP (e.g. a [[Bioretention cells|bioretention cell]]) receiving flow from the edge of an impermeable surface such as an asphalt parking lot or a paved plaza:
The following pretreatement features are recommended where surface sheet flow is being directed to a BMP (e.g. a [[Bioretention cells|bioretention cell]]) receiving flow from the edge of an impermeable surface such as an asphalt parking lot or a paved plaza: