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Line 182:
Line 182:
→Water Balance
* Impervious surface draining onto the permeable pavement is limited or absent.
* Impervious surface draining onto the permeable pavement is limited or absent.
* Underdrain is elevated above the native soil and/or a flow restrictor is installed on the underdrain.
* Underdrain is elevated above the native soil and/or a flow restrictor is installed on the underdrain.
All permeable pavements have very high surface infiltration rates when appropriately maintained. Therefore, the surface course type (e.g. permeable interlocking concrete pavers, pervious concrete, porous asphalt, etc.) is not a key factor in determining volumetric runoff reduction performance.
All permeable pavements have very high surface infiltration rates when appropriately maintained. Therefore, the surface course type (i.e. PICP, pervious concrete) is not a key factor in determining volumetric runoff reduction performance.
All permeable pavements have very high surface infiltration rates when appropriately maintained. Therefore, the surface course type (i.e. PICP, pervious concrete) is not a key factor in determining volumetric runoff reduction performance.