Transcription of BMP #: Constructed Wetlands
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BMP #: Constructed Wetlands
Structural BMP Criteria BMP #: Constructed Wetlands Constructed Wetlands are shallow marsh sys- tems planted with emergent vegetation that are designed to treat stormwater runoff. Fish and Wildlife Service, 2001. Key Design Elements Potential Applications z Adequate drainage area (usually 5 to 10 acres Residential Subdivision: YES. Commercial: YES. minimum). Ultra Urban: LIMITED. Industrial: YES. z Maintenance of permanent water surface Retrofit: YES. Highway/Road: YES. z Multiple vegetative growth zones through vary- ing depths stormwater Functions z Robust and diverse vegetation Volume Reduction: Low z Relatively impermeable soils or engineered liner Recharge: Low Peak Rate Control: High Water Quality: High z Sediment collection and removal z Adjustable permanent pool and dewatering Pollutant Removal mechanism Total Suspended Solids: x Nutrients: x Metals: x Pathogens: x Pennsylvania stormwater Management Manual 1. Section 5 - Structural BMPs Figure 1.
Pennsylvania Stormwater Management Manual 3 Section 5 - Structural BMPs Applications z Alternating bands of deeper water and shallow marsh. Figure 2. “Banded Bathymetric” Constructed Wetland (Auckland pp 6-10).
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