Section 31 25 14.13 – Hydraulically-Applied Erosion Control: ... Flexible Growth Medium

Section 31 25 14.13 – Hydraulically-Applied Erosion Control:   ... Flexible Growth Medium
Section 31 25 14.13 – Hydraulically-Applied Erosion Control:
Flexible Growth Medium
High Performance-
GENERAL
1.01 SUMMARY
A.
This section specifies a hydraulically-applied, 100% biodegradable, High PerformanceFlexible Growth Medium (HP-FGM) that is manufactured in the United States and is composed
of 100% recycled thermally refined (within a pressure vessel) wood fibers, crimped interlocking
man-made biodegradable fibers, mineral activators, naturally derived crosslinked biopolymers
and water absorbents. The HP-FGM is phytosanitized, free from plastic netting, requires no
curing period and upon application forms an intimate bond with the soil surface to create a
continuous, porous, absorbent and flexible erosion resistant blanket that allows for rapid
germination and accelerated plant growth
B.
Related Sections: Other Specification Sections, which directly relate to the work of this
Section include, but are not limited to the following:
B.1. Section 01 57 00 – Temporary Erosion and Sediment Control
B.2. Section 31 00 00 – Earthwork
B.3. Section 31 91 00 – Planting Preparation
B.4. Section 32 92 00 – Turf and Grasses
1.02 SUBMITTALS
A.
Product Data: Submit manufacturer’s product data and installation instructions. Include
required substrate preparation, list of materials and application rate.
B.
Certifications: Manufacturer shall submit a letter of certification that the product meets or
exceeds all technical and packaging requirements.
1.03 DELIVERY, STORAGE AND HANDLING
A.
Deliver materials and products in UV and weather-resistant factory labeled packages.
Store and handle in strict compliance with manufacturer’s instructions and recommendations.
Protect from damage, weather, excessive temperatures and construction operations.
PRODUCTS
2.01 ACCEPTABLE MANUFACTURER
A.
PROFILE Products LLC
750 Lake Cook Road – Suite 440
Buffalo Grove, IL 60089
800-366-1180 (Fax 847-215-0577)
www.profileproducts.com
2.02 MATERIALS
A.
The HP-FGM shall be Flexterra® HP-FGM and conform to the following property values
when uniformly applied at a rate of 3500 pounds per acre (3900 kilograms/hectare) under
laboratory conditions.
Test
Req.
Mass
Physical
12
407
Thickness
0.22
5.6
9Wet
131
Ground
99%
Water
1700%
Material
Cover
Performance
Green
0.01
%
99
Cure
0Observed
Vegetation
800
2.6
Yield5
2245
Kinetic
2.0
Calculated
734
Functional
Environmental
Up
EPA
Ecotoxicity
96-hr
Effluent
Large
100
ASTM
Biodegradability
100%
0.01
-lb/ft
Effectiveness3
oz/yd2
%
2to
mm.
minimum
g/m2
N/m
%
minimum
NTU
Bond
Method
2021.0
inch
maximum
minimum
hours
Value
time
maximum
minimum
Per
LC50
18
Scale
minimum
Holding
Factor2
minimum
D65661
D65251
D68181
D65671
D7367
D73221
D5338
minimum
Energy
Cover
Turbidity
minimum
Color
months
Unit
minimum
maximum
minimum
Strength
Longevity7
Establishment
(English)
(SI)
>
Testing4
100%
Area
Capacity
Absorption Potential6
Property
1. ASTM test methods developed for Rolled Erosion Control Products and have been modified
to accommodate Hydraulically-Applied Erosion Control Products.
2. Cover Factor is calculated as soil loss ratio of treated surface versus an untreated control
surface.
2. % Effectiveness = One minus Cover Factor multiplied by 100%.
4. Large scale testing conducted at Utah Water Research Laboratory. For specific testing
information please contact a Profile technical service representative at 866-325-6262.
5. Yield = (Mass per Unit Area)*(Thickness)*(Ground Cover Percentage).
6. Kinetic Energy Absorption Potential = (Wet Bond Strength)*(Thickness)
7. Functional Longevity is the estimated time period, based upon ASTM D5338 testing and field
observations, that a material can be anticipated to provide erosion control and agronomic
benefits as influenced by composition, as well as site-specific conditions, including; but not
limited to – temperature, moisture, light conditions, soils, biological activity, vegetative
establishment and other environmental factors.
2.03 COMPOSITION
A.
All components of the HP-FGM shall be pre-packaged by the Manufacturer to assure
both material performance and compliance with the following values. No chemical additives
with the exception of fertilizer, soil pH modifiers, extended-term dyes and biostimulant materials
should be added to this product.
A.1. Thermally Processed (within a pressure vessel) Wood Fiber – 80% + 3%
·
Heated to a temperature greater than 380 degrees Fahrenheit (193 degrees Celsius) for 5
minutes at a pressure greater than 50 psi (345 kPa)
Crosslinked Biopolymers and Water Absorbents – 10% + 1%
Crimped, Man-made Biodegradable Interlocking Fibers – 5% + 1%
Micro-Pore Granules – 5% + 1%
2.04 PACKAGING
1
A.
Bags: Net Weight – 50 lb, UV and weather-resistant plastic film
Pallets: Weather-proof, stretch-wrapped with UV resistant pallet cover
Pallet Quantity: 40 bags/pallet or 1 ton/pallet
EXECUTION
3.01 SUBSTRATE AND SEEDBED PREPARATION
A.
Examine substrates and conditions where materials will be applied. Apply product to
geotechnically stable slopes that have been designed and constructed to divert runoff away from
the face of the slope. Do not proceed with installation until satisfactory conditions are
established.
B.
Depending upon project sequencing and intended application, prepare seedbed in
compliance with other specifications under Section 1.01 B
3.02 INSTALLATION
A.
Strictly comply with equipment manufacturer's installation instructions and
recommendations. Use approved hydro-spraying machines with fan-type nozzle (50-degree tip).
To achieve optimum soil surface coverage, apply HP-FGM from opposing directions to soil
surface. Rough surfaces (rocky terrain, cat tracks and ripped soils) may require higher
application rates to achieve 100% cover. Slope interruption devices or water diversion
techniques are recommended when slope lengths exceed 100 feet (30 m). Maximum slope
length is for product applications on a 3H:1V slope. For application on steeper slopes, slope
interruption lengths may need to be decreased based on actual site conditions. Not
recommended for channels or areas with concentrated water flow. This product may be applied
on saturated soils and does not require a curing period to be effective. No chemical additives
with the exception of fertilizer, liming and biostimulant materials should be added to this
product.
B.
For Erosion Control and Revegetation: To ensure proper application rates, measure and
stake area. For maximum performance, apply HP-FGM in a two-step process*:
1.
Step One: Apply fertilizer with specified prescriptive agronomic formulations and 50%
of seed with a small amount of HP-FGM for visual metering.
2.
Step Two: Mix balance of seed and apply HP-FGM at a rate of 50 lb per 125 gallons (23
kg/475 liters) of water over freshly seeded surfaces. Confirm loading rates with equipment
manufacturer. Do not leave seeded surfaces unprotected, especially if precipitation is imminent.
*Depending upon site conditions HP-FGM may be applied in a one-step process where all
components may be mixed together in single tank loads. Consult with Manufacturer for further
details.
Best results and more rapid curing are achieved at temperatures exceeding 60°F (15°C).
Curing times may be accelerated in high temperature, low humidity conditions with product
applied on dry soils.
Over-application of product may inhibit germination and plant growth.
C.
Mixing: A mechanically agitated hydraulic-application machine is strongly
recommended:
1.
Fill 1/3 of mechanically agitated hydroseeder with water. Turn pump on for 15 seconds
and purge and pre-wet lines. Turn pump off.
2.
Turn agitator on and load low density materials first (i.e. seed).
3.
Continue slowly filling tank with water while loading fiber matrix into tank.
4.
Consult application and loading charts to determine number of bags to be added for
desired area and application rate. Mix at a rate of 50 lb of HP-FGM per 125 gallons (23 kg/475
liters). Contact Equipment manufacturer to confirm optimum mixing rates.
5.
All HP-FGM should be completely loaded before water level reaches 75% of the top of
tank.
6.
Top off with water and mix until all fiber is fully broken apart and hydrated (minimum of
10 minutes — increase mixing time when applying in cold conditions). This is very important to
fully activate the bonding additives and to obtain proper viscosity.
7.
Add fertilizer
8.
Shut off recirculation valve to minimize potential for air entrainment within the slurry.
9.
Slow down agitator and start applying with a 50-degree fan tip nozzle.
10.
Spray in opposing directions for maximum soil coverage.
D.
Application Rates: These application rates are for standard conditions. Designers may
wish to reduce rates to encourage faster vegetation establishment or may need to increase
application rates on rough surfaces.
Slope Gradient / Condition
< 4H to 1V
> 4H to 1V and < 3H to 1V
> 3H to 1V and < 2H to 1V
> 2H to 1V and < 1H to 1V
> 1H to 1V
Below ECB or TRM
As infill for TRM*
English
2500 lb/ac
3000 lb/ac
3500 lb/ac
4000 lb/ac
4500 lb/ac
1500 lb/ac
3500 lb/ac
SI
2800 kg/ha
3400 kg/ha
3900 kg/ha
4500 kg/ha
5100 kg/ha
1700 kg/ha
3900 kg/ha
*Use only approved and tested TRMs to create the GreenArmor™ System
3.03 CLEANING AND PROTECTION
A.
After application, thoroughly flush the tank, pumps and hoses to remove all material.
Wash all material from the exterior of the machine and remove any slurry spills. Once dry,
material will be more difficult to remove.
1
B.
Clean spills promptly. Advise owner of methods for protection of treated areas. Do not
allow treated areas to be trafficked or subjected to grazing.
D ENGLISH SI
© 2010 PROFILE Products LLC. All Rights Reserved. A copyright license to reproduce this
specification is hereby granted to non-manufacturing landscape architects, specification writers
and designers.
Revision Date: 06/2010
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