Clean Rivers, Clean Lake -- Rooftops to Rivers Study-- Karen Hobbs
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Transcript of Clean Rivers, Clean Lake -- Rooftops to Rivers Study-- Karen Hobbs
![Page 1: Clean Rivers, Clean Lake -- Rooftops to Rivers Study-- Karen Hobbs](https://reader033.fdocuments.us/reader033/viewer/2022052823/55512479b4c905b3598b45ba/html5/thumbnails/1.jpg)
Smart, Green Solutions to a Major Water Pollution Challenge
Stopping Runoff Pollution and Sewer OverflowsKaren Hobbs
Natural Resources Defense Council
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Natural Conditions
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Courtesy: May, U of W
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Developed Conditions
3Courtesy: May, U of W
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Urban Stormwater Runoff: Pollutants
bacteria
heavy metals
pesticides suspended solids
nutrients
trash
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Combined Sewer Overflows
Image: Seattle Public Utilities
Newtown Creek, BrooklynImage: Riverkeeper
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Green Infrastructure as a solution:What is Green Infrastructure?
Portland streetscapePhoto courtesy of Martina Keefe
Navy Yard BioretentionPhoto courtesy of LID Center
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Portland’s stormwater street planters. Photo courtesy of the Portland Bureau of Environmental Services. NRDC, Stormwater Strategies
Permeable Pavement, City of Portland, BESChicago City Hall Green Roof. Photo courtesy of Roofscapes, Inc.
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Green Infrastructure as a solution:Other non-water benefits
• Reduced energy use• Increased property values• Improved air quality• Lower air temperature• Reduced urban heat island effect• Conservation of water
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Overview: Rooftops to Rivers II• Demonstrates how cities
use green infrastructure to improve stormwater management and achieve multiple benefits.
• The report includes:– Economic benefits of green
infrastructure– Case studies on 14 cities – Encouragement for EPA to
learn from the work of these cities and advance these solutions nationwide
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NRDC’s Emerald City Metric
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Philadelphia
• Green City, Clean Waters plan – creating an urban network of GI over the next 25 years
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Syracuse• 1st community in the
U.S. to have a legal requirement to reduce sewage overflows with GI
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Milwaukee
• MMSD: regional & national wastewater utility leader in its integration of green infrastructure into its combined sewer overflow reduction strategy• No consent decree• GreenSeams
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Milwaukee
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Portland
• Retention standard – January 2011: new development and redevelopment projects must capture and treat 80% of the average annual runoff volume on site
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Economics of Green Infrastructure
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What Needs to Happen?
EPA Regulatory Improvements Critical
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Questions?
www.nrdc.org/stormwater
switchboard.nrdc.org – search: “green infrastructure”
Karen Hobbs: [email protected]