Green Stormwater Infrastructure - Volume 1: Primer (2017) / Chapter Skim
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Pages 9-25
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9 Descriptions of GSI Best Management Practices Bioretention Bioretention (e.g., bioretention cells, rain gardens) normally consists of a filtration bed, ponding area, organic or mulch layer, and plants.
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10 Green Stormwater Infrastructure • AUS installed bioretention systems in the access road medians (Figure 8)
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GSI Best Management Practices 11 Potential Issues • Green roofs may not be suitable in hot and/or dry climates. • Green roofs can attract hazardous wildlife or cause damage to aircraft from windblown plant matter, both of which can be mitigated through careful design.
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12 Green Stormwater Infrastructure • Pennsylvania Stormwater Best Management Practices Manual. Chapter 6: Structural BMPs, BMP 6.5.1: Vegetated Roof.
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GSI Best Management Practices 13 • Clean reservoir annually. • Inspect and maintain to ensure system does not overflow, creating water pools.
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14 Green Stormwater Infrastructure Infiltration Galleries Infiltration galleries are facilities that remove stormwater pollutants and decrease stormwater volume via infiltration into the soil. There are multiple variations of these systems, including shallow basins, rock-filled trenches, and underground end-of-pipe treatment.
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GSI Best Management Practices 15 • Stormwater Management: Infiltration Trenches. Website.
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16 Green Stormwater Infrastructure Maintenance Requirements • Perform periodic maintenance, such as sweeping, vacuum sweeping, and/or high-pressure washing. • Inspect for clogging annually and after large storms.
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GSI Best Management Practices 17 Performance • Sand filters remove particles and associated pollutants very well. Dissolved constituents are not removed well.
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18 Green Stormwater Infrastructure • Stormwater Management Fact Sheet: Sand and Organic Filter. Stormwater Manager's Resource Center.
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GSI Best Management Practices 19 RSAs range from 120 to 500 feet in width and 240 to 1,000 feet in length beyond the end of the runway. Additional Resources • Minnesota Stormwater Manual: Vegetated Filter Strips.
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20 Green Stormwater Infrastructure • Minnesota Stormwater Manual: Permeable Pavement. Website.
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GSI Best Management Practices 21 Source: Michael Baker International. Figure 16.
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22 Green Stormwater Infrastructure – Constructing subsurface wetlands with no accessible standing water. – Covering with netting or wildlife fencing.
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Airport Area Climate Potentially Suitable GSI Hydrology and Other Site Considerations Effort Required for Maintenance Expected Maintenance Activities Regulatory Issues to Address During Design Commercial Buildings (Landside) All climates Bioretention Sediment loads not excessive Moderate T, M, V, St Potential wildlife attractant Infiltration Galleries Water table not too shallow, permeable soils, no underlying groundwater or soil contamination Low to moderate T None Sand Filters Sediment loads that are not excessive Low to moderate T, M Potential wildlife attractant if standing water persists More than 12 inches of rain/year Bioswales Slope adequate to avoid standing water Low T, Sed, V Potential wildlife attractant when there is standing water Wet climates Wetland Treatment Systems High water table or wet climate Low to moderate V Potential wildlife attractant Parking Lot (Landside)
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24 Green Stormwater Infrastructure Airport Area Climate Potentially Suitable GSI Hydrology and Other Site Considerations Effort Required for Maintenance Expected Maintenance Activities Regulatory Issues to Address During Design Parking Areas (Airside) All climates Infiltration Galleries Water table not too shallow, permeable soils, no underlying groundwater or soil contamination Low to moderate T None Sand Filters Sediment loads not excessive Low to moderate T, M Potential wildlife attractant if standing water persists More than 12 inches of rain/year Bioswales Slope adequate to avoid standing water Low T, Sed, V Acceptable within runway safety and taxiway safety areas if slope meets FAA safety area requirements, potential wildlife attractant when there is standing water All but the driest climates Filter Strips None Low V Potential wildlife attractant, mowing height dictated by FAA regulations Ramp/Apron (Airside)
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GSI Best Management Practices 25 Airport Area Climate Potentially Suitable GSI Hydrology and Other Site Considerations Effort Required for Maintenance Expected Maintenance Activities Regulatory Issues to Address During Design Facility Buildings (Landside or airside) Not arid or excessively hot Green Roofs Relatively flat roof Moderate V Potential wildlife attractant All climates Harvesting and Reuse None Moderate to high Sed, St, V Potential wildlife attractant, local plumbing codes, water rights laws Roadways (Landside or airside)
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