Changes

Perimeter = 12 m (left) Perimeter = 20 m (right)]]

Perimeter = 12 m (left) Perimeter = 20 m (right)]]

{{Clickable button|[[Media:Darcy Drainage.xlsx|Download Darcy Drainage Time.xlsx calculator tool]]}}

{{Clickable button|[[Media:Darcy drainage_20200528.xlsx|Download the Darcy drainage time calculator tool]]}}

In some situations, it may be possible to reduce the size of the bioretention required, by accounting for rapid drainage. Typically, this is only worth exploring over sandy soils with rapid infiltration.  

In some situations, it may be possible to reduce the size of the bioretention required, by accounting for rapid drainage. Typically, this is only worth exploring over sandy soils with rapid infiltration.