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|Depth of filter media
|Depth of filter media
|-
|-
|Porosity (fraction)
|Porosity of filter media
|Suggest [[Bioretention media storage|0.4]] unless otherwise tested
|Suggest [[Bioretention media storage|0.35]] unless otherwise tested
|-
|-
|Field capacity (fraction)
|Field capacity (fraction)
|Suggested value 0.03 <ref name = SWMM/>
|Suggested value 0.03 <ref name = SWMM/>
|-
|-
|Conductivity (mm/hr)
|Hydraulic Conductivity (mm/hr)
|Suggested range 25 – 250 mm/hr
|Suggested range 25 – 250 mm/hr
|-
|-
|Depth of storage aggregates layer
|Depth of storage aggregates layer
|-
|-
|Porosity
|Porosity of storage reservoir aggregate
|Suggest value 0.4 unless otherwise tested
|Suggest value 0.4 unless otherwise tested
|-
|-
|Maybe up to 0.5 to account for some anticipated maturation.
|Maybe up to 0.5 to account for some anticipated maturation.
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|-
|Design drawdown time (hrs)
|Design '=[[drainage time]] (hrs)
|Also known as '[[drainage time]]'
|(i.e. time to fully drain the storage reservoir)
|-
|-
!colspan = "2" align = center"|'''Drain (underdrain)'''
!colspan = "2" align = center"|'''Drain (underdrain)'''