erosion control beyond silt fence · erosion control beyond silt fence trish morris community...
TRANSCRIPT
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Erosion Control Beyond Silt Fence
Trish Morris
Community Development Project Manager
Ideal Homes
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When you hear “erosion control” what is the first product that comes to
mind?
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SILT FENCE?
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Why is silt fence so widely used?
It's Cheap
The average cost per foot installed is $2.00-$2.50
It's usually in stock
Silt Fence can be bought through local distributers
and hardware stores
It's easy to find
someone to install it.
Erosion Control companies can get
the product installed quickly
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But you get what you pay for...
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You may pay less in the beginning for silt fence, but it does not take long for
this to happen
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Silt fence requires a lot of maintenance and reinstallation, especially in the Oklahoma wind and hot summers.
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There are many new options out there! Compost Options
Berms
Triangular Silt Dike
Haywattle
Flexamat
Durawattle
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Compost Options
Compost Socks
Compost Berms
Compost Blankets
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Compost Socks
Very Low Maintenance
Aesthetically pleasing
Stackable
Easily adapts to terrain
Can be repurposed to add compost to soil
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Compost Socks Compost Sock Detail
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Compost Socks
Quick and Easy Installation
160 Feet of Compost sock was rolled out in less than 3 minutes with an additional 30 minutes of driving
stakes
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Compost Sock
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Compost Socks
Filtrexx stacked to protect project Filtrexx in place of silt fence for
perimeter control
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Compost Blankets
Pond bank before compost was added
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Compost Blankets
Same pond bank with completed blanket
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Compost Blankets
Approximately 2 weeks after install
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Compost Blankets
1 month after install
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Compost Blankets
½ “ to 2” application to reduce run-off and the formation of ruts by increasing the soil’s ability to absorb rainfall
Improves poor soil health giving desirable vegetation the nutrients it needs to grow quickly
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Compost Blankets Research by Britt Faucette of Filtrexx International has shown that a
2 inch blanket on a 3:1 slope with 4 inches of rain in 2 hours the runoff volume when tested against an untreated slope reduced
runoff volume upwards of 90 %
Peak runoff was reduced by 79 %
Total sediment by 96%
And the total nitrogen and phosphorus were reduced by 99%
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Berms
Easily adapts to terrain
Aesthetically pleasing
Can be low maintenance
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Diversion Berms Various Berm Details
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Berms
Front of berm Back of berm
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Compost Berms Compost Berm Detail
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Compost Berms
Application with pneumatic blower Application using a side discharge
spreader with a berm attachment.
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Compost Berms
Complete berm installed on site
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Compost Berms
Grows vegetation quickly
On slopes can be placed 1 ½ time to 2 times the distance apart as fiber roles (but not further than 30 feet apart)
Meant only to disrupt flow, not stop it entirely.
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Triangular Silt Dike
Allows for water to be slowed down so that particulates can be dropped out, allowing cleaner water to flow over the
product and water to be percolated into the soil
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Triangular Silt Dike
Triangular Silt Dike Detail
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Triangular Silt Dike
Front of lot protection
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Triangular Silt Dike
As a check dam
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Triangular Silt Dike
Used as berms
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Triangular Silt Dike
Great way to create check dams in streets
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Straw Wattle
Relatively easy to install, requires a small trench to sit in and wooden stakes to hold it in place
Conforms to rough terrain
Light Weight
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Straw Wattle Straw Wattle Detail
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Straw Wattle
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Flexamat
Permanent alternative to rip-rap
6.5 “x6.5”x2.25” concrete blocks with 1.5” spacing between the blocks laid on top of Curlex II backing.
Allows for vegetation to grow up in the between the blocks, easy to maintain versus traditional rip rap.
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Flexamat
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Flexamat
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Durawattle
Lightweight and easy to install
Reusable
Ships compressed, can get up to 1800 feet on each pallet
Conforms to grade changes
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Durawattle
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Make it safe for developers and contractors to test new products, failures lead to great successes!
If you see a better way speak up! It is so easy to get stuck in the “if its not broke, don’t fix it” mentatiliy.
Keep track of your resources, many vendors are willing to come on site an walk you through where
you went wrong!
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Questions?
You can contact me for questions on any of the products I spoke about today:
Trish Morris
405-535-4867