Green Stormwater Infrastructure - Volume 1: Primer (2017) / Chapter Skim
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1 This primer on green stormwater infrastructure (GSI) describes the essentials of stormwater management and GSI for airport managers, planners, engineers, and aviation consultants.
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2 Green Stormwater Infrastructure Municipal Airport, the percentage of impervious cover of the entire area is approximately 22 percent (City of Georgetown 2015; Figure 4)
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Introduction 3 Source: © 2016 Google Earth. Figure 3.
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4 Green Stormwater Infrastructure Water Quality Characteristics of Stormwater Runoff from Airports Stormwater runoff from impervious surfaces at airports is often a source of water pollu tion. The runoff from runways, ramp areas, and buildings potentially contains pollutants from aircraft fuels, equipment cleaning agents, oil, and other fluids used in maintenance activities (see Table 2)
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Introduction 5 and maintenance (including vehicle and equipment rehabilitation, mechanical repairs, painting, fueling, and lubrication)
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6 Green Stormwater Infrastructure At many facilities, including airports, the best stormwater management system may be a com bination of conventional stormwater infrastructure and GSI approaches. Figure 5 illustrates, at the large scale of a watershed, the spectrum of management practices and their characteristics across this spectrum.
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Introduction 7 Green Stormwater Infrastructure Green stormwater infrastructure maintains, mimics, or restores natural hydrology to manage and treat stormwater at or near its source. GSI can involve the use of various structural BMPs such as bioswales, green roofs, constructed wetlands, or bioretention.
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8 Green Stormwater Infrastructure GSI Definition Bioretention Process consisting of shallow, vegetated basins that collect and absorb runoff from rooftops, sidewalks, and streets. Mimics natural hydrology by infiltrating and evapotranspiring runoff.
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