building outside the box sustainable building practices for water quality and quantity working...
TRANSCRIPT
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Building Outside the Box
Sustainable Building Practices for Water Quality and Quantity
Working Approaches through EPA Targeted Watershed Initiative Grants
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Cumberland River Basin
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What’s special about our region?
Outstanding recreational areas
Globally significant biodiversity
Most diverse mussel fauna
1/2 freshwater fish in US
Many threatened & endangered species
Booming population growth
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Major Challenges to Basin Water
Growth and development
Urban runoff, roads, & construction
Industrial discharges
Farming, clearcutting and loss of habitat
Acid mine runoff, oil & gas drilling
Straight piping and failing septic systems
Invasive exotic species
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Urbanization impacts on water:
Impervious surfaces
Loss of buffer zones
Flash floods
Stream bank erosion
Lack of Recharge
Water demands
Wastewater discharges
Urban stormwater
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How we got started in sustainable, water-friendly building:
1. Held two Conservation & Common Sense Development Workshops
2. Put Low Impact Development on the ground in the Cumberland Basin
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Building Outside the Box was born to:
Demonstrate sustainable building practices
Implement stream restoration projects
Improve land use practices to protect water quality
Educate on benefits & methods of protecting water quality
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Sustainable Building:Two Key Factors for Water
Impervious Surface Cover – mimic natural hydrology
Streamside Buffers – mimic natural vegetation
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Impervious Cover – key factor
1-10% IC = Sensitive 11-25% IC = Impacted26-100% IC = Non-supporting
Channel instability Loss of habitat Poor water quality Flash Flood – Drought Cycle
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Building Outside the Box (BOB)
Demonstration sites in three impaired watersheds of Cumberland Basin
***
Suburban – Harpeth River
Urban – Mill Creek
Rural – Red River
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Cumberland River Basin
Red
River
Mill
Creek
Harpeth
River
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Red River – BOB rural site
200 acre farm
Logan County, KY
Pleasant Grove Creek
Farm renovations
Agricultural BMPs
Farm house practices
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Improve manure management…
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Hard armor cattle crossings Re-establish Streambank stability
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Barn Roof Runoff Capture
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Quiet Creek – BOB urban site
17 acres – NashvilleFranklin Branch Mill Creek WatershedMid-development changesSite Redesign processAffordable Housing Resources - partner1-2 demonstration homesStream & Site runoff monitoring
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Original site plans: Mill Creek site
.
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Quiet Creek Redesign
Site Redesign Goals: Mimic natural hydrologyMinimize impervious Cover Demo Infiltration OptionsAchieve 80% TSS Removal
Partners:Developer Metro Nashville Design EngineersLandscape Company
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Bioretention
Bioretention
Bio-Retention Option
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Micro Pool PondMicro Pool Pond
Pretreatment
Micro Pool Option
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EarthCraft at Quiet Creek
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Rain Gardens =
Greater Recharge
Greater Beauty
Less stormwater
Win, win
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Morgan Park Place – Nashville
Two blocks in Germantown historic district
63 units – mixed use
Model Urban Stormwater treatment
EarthCraft Multi-family Certified
Lawrence Brothers and New Urban Construction
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New technologies are versatile and protect water from the inside and the outside …
With tankless water heaters pervious surfaces and more!
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Harpeth River – BOB suburban site
620 acre farm site in Franklin, TNOn Harpeth mainstem 1000 homes planned Aggressive LID practicesAll high performance homesOver 40% open space
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Highlands at Ladd ParkHarpeth River BOB Site
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Stream Restoration – all 3 sites
Focus on tributaries and headwaters Establish and protect buffer zones Vegetative plantingsStream bank stabilizationDisconnect stormwater runoff
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Project Monitoring
In-Stream baseflow water quality
In-stream storm event sampling
Site runoff on Quiet Creek site
Economic costs and savings Developers and builders Home owners Communities
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BOB Site Goals
Less impervious surface
Maximum green space
Maximum stream buffers
Runoff infiltration
Native vegetation
Water conservation
Energy efficiency
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Better Site Design Features
Cluster housing
Narrow roads/sidewalks
Rain Gardens/Barrels
Pervious concrete
Dual track or shared driveways
Infiltration landscaping
Water saving appliances
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Infiltration landscaping
Open Section Roads
Grass Channels and Swales
Infiltration Trenches
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Roof runoff infiltration
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BOB Home Construction
Earth Craft certified home construction
Systems approach to sustainable building
Energy efficiency
Water efficiency
Green materials
Indoor air quality
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Systems approach – ventilation
Controlled ventilation Sealed systems Pressure equalization Equipment Size AdjustedBlower Door Test
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Systems Approach to Efficiency
Cost Savings High-Perf. Windows $500 Right-Sized AC: ($500-$800)
Air Sealing $250 Reduced # of AC: ($500-$1,000)
Tight Ducts $250 Compact Ducts ($200-$400)
Effective Insulation $500 Reduced Framing ($200-$400)
High-Eff. Equip. $500 Eliminate Furnace ($0-$500)
$2,000 vs. ($1,500-$2,500)
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Benefits of High Performance House
BuildersHigher demand & market share Higher profits Higher quality product with lower costsLower liability risks Lower call backs
Homeowners
Higher home value
Utility Savings
Better Indoor Air Quality
Health Benefits
Greater durability & value appreciation
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Improving the way we build:
Start with good planning:
TN Growth ReadinessCenter for Watershed ProtectionBetter Site Design Roundtable Codes & Ordinance Worksheet Training building professionals Training Realtors and Home Owners
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Improving the way we build:
Follow through with Good Implementation:
Training
Incentives
Vigilance
Inspections
Enforcement
Focus on Erosion and Sediment
Control
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Multiple Levels of Awareness Required: Bankers to Brick-layers
Growth & Zoning RulesUrban Planner DeveloperDesign EngineerArchitects BuilderContractorsSubcontractorsMunicipal officials Home buyer Real Estate agents Landscapers Erosion Control
BOB Educational Outreach:
EarthCraft House trainingsLID TrainingsHome Tours Design Charrettes Presentations LOC ProgramsSWAN website
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BOB Outcomes
Demonstrate sustainable building is cost effective and protects water quality Motivate building community to adopt it Raise awareness of public to ask for it Improve water quality in basin
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Applications to Watershed Protection
Cumulative effects make big differenceSmart sites to go with smart growth planningConservation design and erosion control are key components Can intervene at any point in process
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Tangible Outcomes On the Ground
First Earth Craft house in TennesseeFirst Water-Friendly mixed use development in NashvillePledges for over 1,000 water-friendly homesA fourth BOB site added with a fifth comingSOLD! Developers saw them sell and started building more!
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Tangible Outcomes in Education
Southeast Watershed Assistance Network launched and Over 1,000 people taught in person:
-Builders learning on construction sites-Developers & Designers on site & in
charettes and trainings-Professionals & the public attending
workshops
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BOB Partnerships 3 Watershed associations – Harpeth, Red, Mid-Cumberland3 Universities – Vanderbilt, Austin Peay, Western KentuckyHome Builders Association of Middle TennesseeSoutheast Watershed Forum Affordable Housing Resources, Inc. Southface Energy Institute / Earth Craft House Center for Watershed Protection Federal agencies – EPA, USGS, TVA & NACDState agencies – TDEC and TDA Municipal agencies – Stormwater and Codes, Planning Professional groups – ASLA, AIA and USGBC Electric utilities - NES and MTEMC Local business leaders – architects, builders, planners, engineers Local officials – District conservationists, planners, mayors
For full list go to www.cumberlandrivercompact.org
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Resources
Cumberland River Compactwww.cumberlandrivercompact.orgwww.buildingoutsidethebox.org
Southeast Watershed Assistance Networkwww.watershed-assistance.net
Center for Watershed Protectionwww.cwp.org
U.S Green Building Council www.usgbc.org
Earth Craft House Programwww.earthcrafthouse.com
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Building Outside the Box with the Cumberland River Compact
Cumberland River Compact
Senior Fellow Margo Farnsworth
BOB Director Gwen Griffith
(615) 837-1151
www.cumberlandrivercompact.org