water centric design: restoring nature’s balance summit/… · water centric design: restoring...
TRANSCRIPT
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Water Centric Design: Restoring Nature’s BalanceJames Patchett, FASLA, LEED APConservation Design Forum, Inc.
© Cook Jenshel Photography
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Re-circulation throughevapo-transpiration
Shallow ground water flow
Aquifer recharge
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Bluff Springs Fen Elgin, Illinois
The Botanical Law“Plants Grow in Habitats to Which They are Adapted”
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Bluff Springs Fen Elgin, Illinois
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Bluff Springs Fen Elgin, Illinois
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Bluff Springs Fen Elgin, Illinois
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Bluff Springs Fen Elgin, Illinois
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Floodwater from Poplar Creek Hoffman Estates, Illinois
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Loss of system stability and biodiversity in flood prine habitats
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Constant, clean discharge flows, year round to sustain stable surface water hydrology with constant water temperature and chemistry
Historical Patterns of HydrologyRecharge Zone: UplandsDischarge Zones: Lowlands – rivers, streams, ponds, wetlands
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Water in Contemporary Urban, Suburban & Rural Environments
Traditional Stormwater Management Approach:Collect and convey water away from the site just as quickly and efficiently as the law will allow through enclosed storm sewer systems designed with concentrated points of discharge that generate a velocity and volume of flow that is nearly impossible to mitigate.
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Everywhere USA Today
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According to USEPA, 40-60% of nitrogen applied to lawns ends up in surface and groundwater systems
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Reversed hydrological pattern results in runoff containing sediments, oils, greases, salts, fertilizers, pesticides, and higher water temperatures that inundate historical systems adapted to completely different hydrological and water quality conditions
Contemporary HydrologyUpland becomes discharge zoneNatural wetlands are expected to function as recharge zones
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The Physics of Design
“For every design ‘action’ there are environmental, social, and psychological ‘reactions’ to be observed.”[Newton’s third law of physics applied to design]
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We blame it on too much rain…
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Severe erosion of stream and river systems caused by excessive runoff
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Collapse of Infrastructure
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The hydrology of boom…
and bust
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Loss of system stability and biodiversity
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August 1991
Confluence of Missouri, Illinois + Mississippi Rivers
August 1993
[NASA/Goddard Space Flight Center Scientific Visualization Studio]
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[Photos taken or compiled by Dr. Tom Weingeist]
Iowa floods of 2008
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The Foundation for Sustainable Design
BEGINS WITH WATER
CDF Philosophy and First Principles
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First Principles of Sustainable Design
DoctrineAll water is a valuable resource; it should never be squandered or treated as a waste product in any of its forms or contexts.
ApproachReplicate, to the degree possible, the historical natural and cultural processes to which local ecosystems are adapted.
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1. Green roof systems2. Porous pavement systems3. Bio-retention systems4. Rainwater harvesting and re-use5. Wastewater recycling and re-use6. Native landscape systems
Distributed Rainwater Management Strategies for all land use cover surfaces with applications appropriate for scale and context;
Replicate natural hydrology and provide multiple benefits on all land use surfaces:
Integrated Green Strategies
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Green StrategiesGreen Roof Systems
Chicago City Hall Green RoofChicago, Illinois
ASLA Green RoofWashington DC
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Chicago City Hall Green RoofChicago, Illinois
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Green StrategiesPorous Pavement Systems
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Green StrategiesBio-retention Systems
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Green StrategiesRainwater Harvesting and Re-use Systems
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Green StrategiesWastewater Harvesting and Re-use Systems
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Green StrategiesNative Landscape Systems
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Blackberry Creek Watershed Alternative Futures
• Develop potential alternative futures for the watershed
• Evaluate the hydrologic and habitat implication of those futures
• Design and evaluate impact of alternative land use and management choices
• Templates
• Scenarios
• Evaluation of hydrologic, water quality, and habitat impacts of temples and scenarios
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Blackberry Creek Watershed Alternative Futures
• Commercial• Moderate Density Residential • Rural Residential• Estate Residential• Agriculture• Stream Corridors• Wetlands
Design Templates
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Green roof garden for
second floor units
Green roof garden for
second floor units
Conventional Conservation
Blackberry Creek Watershed Alternative FuturesCommercial Templates
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Blackberry Creek Watershed Alternative FuturesCommercial Conservation Design Template
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Blackberry Creek Watershed Alternative Futures
Conventional Conservation
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Blackberry Creek Watershed Alternative FuturesModerate Density Residential Conservation Design Template
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Blackberry Creek Watershed Alternative FuturesEvaluation Modeling
• Flood Flows (Q10 & Q100)• Channel Forming Flows (1 - 2 year event)• Low Flows (Q7-10)• TQmean• Habitat/biology• Water Quality • Perform Evaluations on Templates and Scenarios
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$-
$100,000
$200,000
$300,000
$400,000
$500,000
$600,000
$700,000
$800,000
$900,000
$1,000,000
1. SitePreparation1
2. StormwaterManagement
3. SanitarySewer
4. WaterDistribution
5. Site Paving andSidewalks
6. LandscapeDevelopment
DesignContingency2
ConventionalConservation
Conventional $3,350,000 ($37,600/lot) / Conservation $2,880,000 ($32,400/lot)
Blackberry Creek Watershed Alternative FuturesModerate Density Residential Template
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Etowah River Alternative FuturesCanton, GA
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Etowah River Alternative FuturesCanton, GA
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IEPA/CDF Green Roof Monitoring StationElmhurst, IL
Water Management, Energy Savings, Food Production
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IEPA/CDF Green Roof Monitoring StationElmhurst, IL
Hydrological Response Research
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1 2 3 4 5 8 9 10
September 22, 2006 rain event totaling 0.75 inches
IEPA/CDF Green Roof Monitoring StationElmhurst, IL
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On average, CDF has saved $1,384.99 per year on cooling costssince installing the green roofs due to a reduction in the number of Kwh used per degree day.
Building heating + cooling data
IEPA/CDF Green Roof Monitoring StationElmhurst, IL
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Rooftop Urban Agriculture is a success, multiple varieties of fruits and vegetables can be grown
Deeper media (6-8”) allows for native prairie grasses and perennials to succeed
IEPA/CDF Green Roof Monitoring StationElmhurst, IL
Rooftop urban agriculture
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Paveloc Permeable Paving Systems Technical Manual
Kresge Foundation HeadquartersTroy, MI
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Integrated Site Planning + Green Infrastructure Solutions
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Sustainable solutions for any environment
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Sustainable results can only be achieved with a:
• Committed sponsor• Experienced team• Integrated, collaborative design process
Green roof garden for
second floor units
Green roof garden for
second floor units
Conventional Sustainable
First Principles
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Native LandscapePavement BaseBioswalesRain GardensWater reuse
Maximizing Retention Capacities
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The Reith Village at Merry Lea Environmental Learning CenterWolf Lake, IN
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The Reith Village at Merry Lea Environmental Learning CenterWolf Lake, IN
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The Reith Village at Merry Lea Environmental Learning CenterWolf Lake, IN
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The Reith Village at Merry Lea Environmental Learning CenterWolf Lake, IN
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Villa Park Police StationVilla Park, IL
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Green Roofs
Porous Pavement
Rain Gardens
Villa Park Police StationVilla Park, IL
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Villa Park Police StationVilla Park, IL
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0.1 inches/hr
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Porous pavement + bioswales/rain gardens
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Evelyn Pease Tyner Interpretive Centerglenview, illinoisClient: The Glen Development CorporationCompletion: 2007LEED Platinum, 2007Team: Wight and Company, Phoenix Architects, Bluestone + Associates
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Evelyn Pease Tyner Interpretive CenterGlenview, Illinois
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Evelyn Pease Tyner Interpretive CenterGlenview, Illinois
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Peggy Notebaert Nature MuseumChicago, IL
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Peggy Notebaert Nature MuseumChicago, Illinois
Peggy Notebaert Nature MuseumChicago, IL
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Peggy Notebaert Nature MuseumChicago, IL
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Peggy Notebaert Nature MuseumChicago, IL
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Peggy Notebaert Nature MuseumChicago, IL
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Peggy Notebaert Nature MuseumChicago, IL
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Queens Botanical Gardenflushing, new yorkClient: Queens Botanical GardenCompletion: 2002 (master plan), 2009 (administration building and gardens)Awards: Illinois ASLA Merit Award, 2009 (administration building and gardens)
New York Green Building Design Award, 2004Illinois ASLA Merit Award, 2003 (master plan)
LEED Platinum, 2008Team: Atelier Dreiseitl, BKSK Architects
© Jeff Goldberg/Esto
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Queens Botanical GardenFlushing, New York
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QUEENS BOTANICAL GARDEN – Grauwassersystem
Queens Botanical GardenFlushing, New York