Summary of Bioretention Variants for Permeability of Native Soils and Potential Land use Pollutant Loading

Summary of Bioretention Variants for Permeability of Native Soils and Potential Land use Pollutant Loading

(Link to this table)

Bioretention Type	Variant	Underlying Soil Performance Criteria
Filtration/Partial Recharge Facility	No under-drain	Higher recharge potential (facility drain time without under-drain is 48 hours)
Infiltration/Recharge Facility	Under-drain	Lower recharge potential (facility drain time without under-drain is > 48 hours)
Infiltration/Filtration/Recharge Facility	Elevated under-drain	Higher nutrient loadings and/or quantity control
Filtration Only Facility	Under-drain with liner	Hot Spot Treatment