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Sustainable Stormwater. Sustainability for all the places between the buildings. Today’s Agenda. Best Management Practices (BMPs) to protect water quality With Infiltration Without infiltration. N. B est M anagement P ractice s (aka BMPs) Two Types. - PowerPoint PPT Presentation
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Sustainable Stormwater
Sustainability for all the places between the buildings
Today’s Agenda
Best Management Practices (BMPs) to protect water quality
• With Infiltration• Without infiltration
Best Management Practices (aka BMPs)Two Types
N
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
Detention pondsare not low impact development
Detention pondsare not low impact development
Detention pondsare not low impact development
Detention pondsare not low impact development
Detention pondsare not low impact development
Detention pondsare not low impact development
Detention pondsare not low impact development
Detention pondsare not low impact development
Detention pondsare not low impact development
Detention pondsare not low impact development
Impervious SurfacesA Watershed Perspective
If you win the infiltration argument…
Structural BMPsUnderground infiltration facilities anywhere
Vegetated Filter Strips
18
Structural BMPsPorous Pavement on Lot 2
• Look ma! No runoff!
Structural BMPs - Rain Gardens on less occupied areas of Lot 2 & Lot 3
Structural BMPsDownspout Disconnections to some areas of
Lot 2
Dispersion
While you’re making the case for infiltration, you might advocate for…
Non-structural BMPsReduce lawns
Swales instead of pipes
25
Non-structural BMPsPollutant Source Control
Non-structural BMPsCultural Landscape Practices
Lawn senescence
Use compost not nitrogen fertilizers
Non-structural BMPsControl Invasives (preferably without
herbicides)
Courtesy of Jefferson Co Weed Control
Courtesy of J.S. Peterson
Courtesy of Glenn Mller
Protecting Soil Protects Watersheds
Image from Soil Quality Information Sheet, U.S. Department of Agriculture
Non-structural BMPsKeep Soil Covered
Courtesy of James Santana
Non-structural BMPsLimit Compaction
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
Non-structural BMPsAmend Disturbed Soils with Compost
Protecting Air Protects Stormwater
Non-structural BMPsShade south facing walls
Non-structural BMPsShade air conditioners
Non-structural BMPsSalvage Materials
Non-structural BMPsRecycle Construction Materials
The Hydrologic CycleA Definition
The continuous movement of water through everything.
Thank You!
Sustainability for all the places between the buildings
503.334.8634
The Water Balance ModelWater Quality Before
Some sediment
The Water Balance ModelWater Quality After
Sediment (air particulates)Feces
Other debris
Sediment/turbidityHydrocarbonsHeavy metals
Other chemicals
Sediment/turbidityfertilizerspesticidesherbicides
Non-Structural BMPsHave fun
