Erosion Prevention & Control Methods | ||||
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Straw/Hay MulchingStraw Mulching or Straw Blowing consists of placing a uniform layer of straw or hay onto the soil, slope or other area(s) requiring stabilization. The process is typically used for soil stabilization as a temporary surface cover on disturbed areas until soils can be prepared for revegetation and permanent vegetation is established. This is especially effective where road work is being done or where steep slopes present a challenge in controlling erosion damage.
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HydroseedingHydroseeding is a planting process which utilizes a slurry of seed and mulch and sprayed over prepared ground in a uniform layer. It promotes quick germination and inhibits soil erosion. The mulch in the hydroseed mixture helps maintain the moisture level of the seed and seedlings. The slurry often has other ingredients including fertilizer, tackifying agents, green dye and other additives. Hydroseeding is used to seed grass on commercial sites, highways, golf courses, lawns and areas too large, inaccessible or unsuitable for conventional methods. |
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Hydroseeding with Fiber Reinforced MatrixHydroseeding with a Fiber Reinforced Matrix (FRM) utilizes chemical and mechanical bonding techniques to lock the medium in place. This enables the applied matrix to handle higher rates of surface flow from heavy rains or steeper slopes. Traditional erosion control blankets need not be used when a FRM is used thereby saving time and materials.
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Riprapalso known as rock armour — is rock or other material used to armor shorelines, streambeds, bridge abutments, pilings and other shoreline structures against erosion. It is made from a variety of rock types, commonly granite, limestone or occasionally concrete rubble from building and paving demolition. It is used to protect coastlines and structures from erosion by the sea, rivers, or streams. It is used on any waterways where there is potential for water erosion.
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GabionsGabions are cages, cylinders, or boxes filled with rock (riprap), soil or sand that are used in civil engineering and road building. For erosion control caged riprap is used. Gabion baskets have some advantages over loose riprap because of their modularity and ability to be stacked in various shapes. They also have advantages over more rigid structures because they can conform to ground movement, dissipate energy from flowing water and drain freely. A new trend is to infill the voids with hydroseed. The interstitial vegetation not only reinforces the structure but provides additional filtration for sediment control and beautifies the landscape.
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Vegetated GabionsVegetated Gabions provide an important component to a biotechnical (combining live materials with structural engibeering) soil stabilization solution and allow for the growth and establishment of natural vegetation while providing strong protection from the onset. In many situations where hard-armor solutions such as concrete and riprap were once widely accepted, biotechnical soil stabilization is now emerging as a more cost-effective, aesthetically pleasing, and environmentally acceptable solution.
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GreenArmorHydroseeding with a Flexible Growth Medium and a Turf Reinforcement Mat, GreenArmor is a 4th generation technology alternative to hard armour. This unique solution has been proven to provide immediate erosion prevention, speed growth establishment and deliver superior performance on slopes as steep as 2:1 while at the same time lowering costs dramatically when compared to a hard armour installation.
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Straw WattlesStraw wattles are manufactured from rice straw or other specified straw, and are wrapped in a tubular plastic netting. Wattles serve a dual purpose; they protect from both erosion and sediment loss. The wattles reduce the velocity of runoff down slopes , turning it into sheet flow rather than direct flow.
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Terra-Tubes - Fibre Flitration TubesTerra-Tubes Fiber Filtration Tubes are engineered composites of wood fibers, man-made fibers and performance-enhancing polymers, all encased in heavy-duty, knitted cylindrical tubes. This 4th generation technology device is designed to effectively trap, filter and treat sediment-layden runoff while reducing hydraulic energy.
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Silt FenceA silt fence, is a temporary sediment control device installed on construction sites, before soil disturbance begins, to protect water quality in nearby streams, rivers, lakes and bays from sediment (loose soil) in storm water runoff. A silt fence consists of a piece of synthetic filter fabric stretched between a series of stakes along a horizontal contour level. The bottom edge of the fabric is trenched into the soil and backfilled on the uphill side. Storm water slowly passes through the fence while depositing its sediments on the uphill side of the fence. Silt fences are perimeter controls and are designed to retain sediment in place where soil is being disturbed by construction processes. |
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