Group 5 sustainable stormwater management(building services1)
Sustainable Stormwater
description
Transcript of Sustainable Stormwater
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Sustainable Stormwater
Sustainability for all the places between the buildings
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Today’s Agenda
Best Management Practices (BMPs) to protect water quality
• With Infiltration• Without infiltration
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Best Management Practices (aka BMPs)Two Types
N
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The Water Balance ModelWater Quantity Before
23% base flow
(shallow infiltration)
40%
evap
ora
tion
0.005% runoff
X” r
ain
fall
yearl
y a
vg
35%
gro
un
dw
ate
r(d
eep
in
filt
rati
on
)4
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Detention pondsare not low impact development
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Detention pondsare not low impact development
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Detention pondsare not low impact development
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Detention pondsare not low impact development
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Detention pondsare not low impact development
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Detention pondsare not low impact development
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Detention pondsare not low impact development
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Detention pondsare not low impact development
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Detention pondsare not low impact development
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Detention pondsare not low impact development
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Impervious SurfacesA Watershed Perspective
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If you win the infiltration argument…
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Structural BMPsUnderground infiltration facilities anywhere
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Vegetated Filter Strips
18
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Structural BMPsPorous Pavement on Lot 2
• Look ma! No runoff!
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Structural BMPs - Rain Gardens on less occupied areas of Lot 2 & Lot 3
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Structural BMPsDownspout Disconnections to some areas of
Lot 2
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Dispersion
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While you’re making the case for infiltration, you might advocate for…
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Non-structural BMPsReduce lawns
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Swales instead of pipes
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Non-structural BMPsPollutant Source Control
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Non-structural BMPsCultural Landscape Practices
Lawn senescence
Use compost not nitrogen fertilizers
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Non-structural BMPsControl Invasives (preferably without
herbicides)
Courtesy of Jefferson Co Weed Control
Courtesy of J.S. Peterson
Courtesy of Glenn Mller
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Protecting Soil Protects Watersheds
Image from Soil Quality Information Sheet, U.S. Department of Agriculture
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Non-structural BMPsKeep Soil Covered
Courtesy of James Santana
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Non-structural BMPsLimit Compaction
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Non-structural BMPsPrevent Erosion
STRESS
COVER ABANDONED * AVOIDANCE *
INCREASED RESPIRATION * REDUCED
FEEDING * INCREASED COUGHING RATES
REDUCED GROWTH RATES * DELAYED HATCHING *
LONG TERM REDUCTION IN FEEDING
DEATH
RELATIONSHIP OF FISH ACTIVITY TO TURBIDITY
TIME (LOG 10)
TU
RB
IDIT
Y (
LOG
10)
Courtesy of James Santana
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Non-structural BMPsAmend Disturbed Soils with Compost
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Protecting Air Protects Stormwater
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Non-structural BMPsShade south facing walls
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Non-structural BMPsShade air conditioners
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Non-structural BMPsSalvage Materials
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Non-structural BMPsRecycle Construction Materials
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The Hydrologic CycleA Definition
The continuous movement of water through everything.
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Thank You!
Sustainability for all the places between the buildings
503.334.8634
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The Water Balance ModelWater Quality Before
Some sediment
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The Water Balance ModelWater Quality After
Sediment (air particulates)Feces
Other debris
Sediment/turbidityHydrocarbonsHeavy metals
Other chemicals
Sediment/turbidityfertilizerspesticidesherbicides
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Non-Structural BMPsHave fun