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→Notes
===Notes===
===Notes===
* Operation and maintenance cost estimates include removal of sediment from the catchbasin, by annual surface vacuum sweeping, repairing of potholes and assume no rehabilitation of the porous asphalt surface is required over the 50 year timeframe.
* Operation and maintenance cost estimates include removal of sediment from the catch basin, annual vacuum sweeping of the pavement surface and some repairing of potholes, but assume no rehabilitation of the porous asphalt surface is required to maintain acceptable drainage function over the 50 year timeframe.
* The tool calculates costs for new (greenfield) development contexts and includes costs for contractor overhead and profit, material, delivery, labour, equipment (rental, operating and operator costs), hauling and disposal.
* The tool calculates costs for new (greenfield) development contexts and includes costs for contractor overhead and profit, material, delivery, labour, equipment (rental, operating and operator costs), hauling and disposal.
** Land value and equipment mobilization and demobilization costs are not included, assuming BMP construction is part of overall development site construction.
** Land value and equipment mobilization and demobilization costs are not included, assuming BMP construction is part of overall development site construction.