the annual mass of pollutants discharged. Managed aquatic system Aquatic plant-based BMPs They can be incorporated ▪ ▪ (MAPS) remove nutrients through a variety into a wet detention BMP of processes related to nutrient treatment train to provide http://www.clemson.edu uptake, transformation, and additional treatment and nutrient microbial activities. removal after the wet pond has provided reduction of pollutants Examples include planted ▪ through settling and other littoral zones and floating mechanisms that occur within the treatment wetlands. wet pond. Table S4. Summary of another LID technologies Low Impact Development Description Ecosystem Services Stormwater harvesting Uses treated stormwater Stormwater harvesting ▪ ▪ for beneficial purposes before it offers an alternative freshwater http://blog.farmsreach.com is discharged to surface waters, resource, which may alleviate thus reducing the stormwater demand on typical freshwater volume and mass of pollutants sources. discharged. Can be used to provide ▪ It is most often used with water for irrigation and other ▪ wet detention as part of a BMP applications, thus reducing strain treatment train. on groundwater aquifers, rivers, and lakes. Natural area conservation Protection of natural areas The undisturbed soils and ▪ ▪ helps maintain the undeveloped native vegetation of conservation http://moverdubai.net/ hydrology of a site by reducing areas promote rainfall runoff, promoting infiltration and interception and storage, preventing soil erosion. infiltration, runoff filtering, and Examples of conservation direct uptake of pollutants. ▪ areas include areas of undisturbed areas are eligible ▪Natural vegetation preserved at the for stormwater credit if they development site, such as forests, remain undisturbed during floodplains and riparian areas, construction and are protected by
the annual mass of pollutants discharged. Managed aquatic system (MAPS) http://www.clemson.edu ▪ Aquatic plant-based BMPs remove nutrients through a variety of processes related to nutrient uptake, transformation, and microbial activities. ▪ Examples include planted littoral zones and floating treatment wetlands. ▪ They can be incorporated into a wet detention BMP treatment train to provide additional treatment and nutrient removal after the wet pond has provided reduction of pollutants through settling and other mechanisms that occur within the wet pond. Table S4. Summary of another LID technologies Low Impact Development Description Ecosystem Services Stormwater harvesting http://blog.farmsreach.com ▪ Uses treated stormwater for beneficial purposes before it is discharged to surface waters, thus reducing the stormwater volume and mass of pollutants discharged. ▪ It is most often used with wet detention as part of a BMP treatment train. ▪ Stormwater harvesting offers an alternative freshwater resource, which may alleviate demand on typical freshwater sources. ▪ Can be used to provide water for irrigation and other applications, thus reducing strain on groundwater aquifers, rivers, and lakes. Natural area conservation http://moverdubai.net/ ▪ Protection of natural areas helps maintain the undeveloped hydrology of a site by reducing runoff, promoting infiltration and preventing soil erosion. ▪ Examples of conservation areas include areas of undisturbed vegetation preserved at the development site, such as forests, floodplains and riparian areas, ▪ The undisturbed soils and native vegetation of conservation areas promote rainfall interception and storage, infiltration, runoff filtering, and direct uptake of pollutants. ▪Natural areas are eligible for stormwater credit if they remain undisturbed during construction and are protected by
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