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Erosion Control
Materials
- North American Green Erosion Control Blankets
- Gabions
- Concrete Revetment Systems
- Silt Fence
- GeoRidge
• On-Site
Loss of precious topsoil
Instability of structures due to undermining
Regrading and reseeding site
• Off-Site
Sediment Migration from site
Choking and filling of lakes, streams and waterways
Degrades Aquatic habitat
Buries critical spawning gravel and fish eggs
Problems Associated with
Erosion
• Short-Term up to 1 year
– Rapid degrading
• DS75 & DS150
– Photodegradable
• S75 & S150
– Biodegradable
• S75BN & S150BN
North American Green
Short-Term ECBs
Erosion Control Blankets
• Short Term – straw (3-12) months
• Extended Term- straw coconut , coconut (24- 36) months
• Permanent- TRM’s, C-TRM’s
• Short-Term up to 1
year
– Rapid degrading
• DS75 & DS150
– Photodegradable
• S75 & S150
– Biodegradable
• S75BN & S150BN
North American Green
Short-Term ECBs
Ultra Short-Term ECBs
• DS75 single net, 100% straw matrix
• DS150 top & bottom net, 100% straw matrix
• Rapid degrading thread
• Performance identical to S75 & S150
• Functional longevity up to 2 months
• Ideal for high maintenance areas
Short-Term
Photodegradable • S75: single net, 100%
straw
• S150; double net, 100%
straw
• Up to 12 mo.
functionality
• Netting & thread are
photodegradable
C125 – Long-Term
• Heavyweight UV stabilized top & bottom net
• 100% coconut fiber matrix
• Functional longevity up to 36 months
SC150 BioNet
• 100% Natural materials, Leno woven top net
• 70% straw/30% coconut fiber matrix
• Functional longevity up to 18 months
C125 BioNet
• 100% Natural Fiber
material, Leno woven
top net
• 100% coconut fiber
matrix
• Functional longevity up
to 24 months
BMP’s
• Best management practices
for soil erosion control and
sediment control
• Protect water quality
• Anywhere land disturbing activities will take place
where erosive forces exceed the limits of
conventional vegetation establishment methods
- Use where mulches
&
blown straw fail
Where and Why Use Temporary
Degradable RECPs
Why Use Vegetation?
• Low cost
• Ease of use
• Extremely effective
• Aesthetic
• Easy to maintain
• Habitat benefits
• Public demand
• ECBs provide erosion protection prior to vegetation establishment
– Reduce runoff velocity and volume (improve infiltration of water)
– Reduce soil detachment and transportation
– Absorb raindrop energy
– Trap soil particles
How ECBs Work
• Organic matrix materials provide mulching action to enhance vegetation establishment
– Moisture absorption and retention
– Reduces soil temperature fluctuation
– Physically supports young plants
Additional Benefits Of ECBs
GeoRidge Sediment Control Berm
• Easily installed
• Effective
• Permeable
• Reusable
• Easy to store & carry
HISTORICAL USE
• Original product for this application
was hay bales or rock dams
• More recently, synthetic berms
have been introduced to
accomplish this task
GeoRidge Function
• Reduces water velocity
• Causes soil & sediment to drop out
• Allows for establishment of vegetation
Spacing
• Height of GeoRidge/slope in per cent
• 2% slope
– 0.23 m / .02 = 11.5 metre spacing
• 6% slope
– 0.23 m /.06 = 3.8 metre spacing
Max. Permissible
Material Shear Stress (lbs/ft2)
Blown Straw 0.00
Sod 1.00
4” Rock Riprap 1.33
Straw Coconut 1.80
6” Rock Riprap 2.00
Coconut 2.25
Channel Liner
Performance Comparison
• Ideal for use in environmentally
sensitive areas where
synthetics are unwelcome.
• Reduces the likelihood of
wildlife entanglement.
• Excellent for
wetland/bioengineering sites.
• Increased erosion control
capabilities.
100% Biodegradable RECPs
SC250 • Permanent Matting Structure
Reinforces Vegetation
• Fiber Matrix Provides Immediate Erosion Control and Assists in Seed Germination/growth
• Designed for Severe Slopes & Drainage Channels
High Strength
Top Net
3-D Corrugated
Center Net
Straw/Coconut
Matrix Material
High Strength
Bottom Net Slopes Channels
C350 • 100% Coconut Fiber Matrix
• C350 Performance Widely
Documented
• Protects Soil, Seed & Root
Systems From Flowing
Water
Super High
Strength Top Net
3-D Corrugated
Center Net
Coconut Fiber
Matrix Material
Super High
Strength Bottom
Net
Slopes Channels
Shorelines
P550 • Polypropylene Matrix
Increases Permanent Vegetation Reinforcement
• Excellent for Shorelines
• Replacement for Rock and Concrete
Ultra-High Strength
Top Net
3-D Corrugated
Center Net
Polypropylene
Matrix Material
Ultra-High Strength
Top Net
Slopes Channels
Shorelines
• Unvegetated TRM provides primary protection for
seed and bare soil.
• Randomly oriented fibers provide barrier for soil
and seedbed from erosive forces
How TRMs Work
Phase 1 - Pre-emergence
Partially Vegetated; TRM provides primary
protection and seedling reinforcement
Phase 2
Establishment
•Fully Vegetated; Vegetation provides primary erosion protection
while TRM provides supplemental erosion control and vegetation
reinforcement (Occurs 6-36 months after installation).
•The permanent structures in the Vmax products reinforces the
vegetation and provides supplemental erosion control to protect
the soil from shear forces penetrating the vegetative cover
Phase III
Mature Vegetation
ECONOMIC
BENEFITS
• Less Expensive
to Install Than
Soil In-filled
TRMs
• Up to 60%
Savings Over
Rock Riprap
Vegetated C-TRMs
Outperform Rock
10
12
14
4
8
10
0.00
2.00
4.00
6.00
8.00
10.00
12.00
14.00
Perm
issib
le
Sh
ear
Str
ess
(lb
s/f
t2)
SC25
0
C35
0P55
0
12" Rock
24" Rock
30" Rock