Green Stormwater Infrastructure - Volume 1: Primer (2017) / Chapter Skim
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Pages 26-29
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From page 26... ...
26 GSI strategies can provide effective stormwater management and deliver a variety of aesthetic and economic benefits to airports, including the following: • Environmental -- water quality, aquifer recharge, landscape aesthetics, streambank protection, flood mitigation, and successful compliance with the federal Clean Water Act • Economic -- potentially lower capital and operation and maintenance costs for stormwater infrastructure, and reduction in facility energy and other operation costs • Social -- demonstration of stewardship to communities and stakeholders • Land use -- efficient use valuable property by replacing conventional landscapings Potential Cost Savings GSI can reduce operating costs if the stormwater is collected and reused, and may be more cost effective than conventional infrastructure over the long term. Case studies, such as the following, have shown that the cost of construction and installation of GSI may be 15 to 45 percent less than the cost of conventional stormwater infrastructure (U.S.
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From page 27... ...
Benefits of Green Stormwater Infrastructure 27 • Post-Project Monitoring of BMPs/SUDS to Determine Performance and Whole-Life Costs.
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From page 28... ...
28 Green Stormwater Infrastructure Volume Reduction Reducing the volume of runoff using the GSI approach potentially reduces the costs associated with a completely conventional infrastructure approach by minimizing the construction, installation, and maintenance of stormwater pipes and outfalls, as well as the energy costs associated with pumping the runoff to the discharge location or a treatment plant. Reduction of Energy Costs By promoting infiltration of stormwater on-site, GSI reduces the amount of water that needs to be conveyed off-site.
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From page 29... ...
Benefits of Green Stormwater Infrastructure 29 Better management of peak runoff during extreme weather events can reduce property damage incurred by flooding. Protection of Water Quality GSI reduces pollutant loads in stormwater runoff through natural filtration by ground vegetation and other natural mechanisms.
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