Stormwater Control Proprietary Device Polygon

For more information about this layer please see the GIS Data Catalog. Proprietary Device Polygon Component Types--- Hydrodynamic Separator: Hydrodynamic Separators are stormwater management devices that use cyclonic separation to control water pollution.--- Media Filter: Filtration system that uses a variety of media types to filter contaminants.--- Alternative Infiltration Systems: Other infiltration systems that are similar to vaults, tanks and trenches, but do not meet the standards of these features.