Best Management Practices (BMPs)
BMP’s are used to control the sediment caused by storm water runoff as well as to stabilize existing soil. An example being Silt fence around a construction site to keep any loose soil from contaminating outlying lands, or wattles that allow water to pass through keeping the natural flow while filtering the erosion of soil that comes with it.
With today’s strict erosion and sediment control regulations, it is getting more and more difficult for contractors to remain in compliance with state and federal laws, to avoid our clients being fined tens of thousands of dollars we engineer solutions that best suite your site through our years of best management practice (BMP’s) installation and modification experience.
Dust control, is becoming a large environmental issue. The E.P.A. keeps adding rules and regulations regarding the dust caused by construction operations.
We have various applications in which to control and suppress the dust depending upon the scale of the job, the job specific specifications and the cost effectiveness needed for the project.
Because it is so easy to use and effective, hydroseeding is one of the most popular methods of planting. Hydroseeding is used to plant new seeds to stop erosion and can be used anywhere on a project.
Hydroseeding is used to spray out seed in a wood fiber mulch slurry, generally on areas that are inaccessible to other seeding equipment or on areas that it is deemed more cost effective than the alternative. Hydroseeding is used to revegitate the sides of roads after construction, to reseed areas that have been burned by fire, for new lawns “we even have seed blends that will stay green year round!!”, for golf courses, and pretty much any other seeding that needs done.
Hydroseeding is the application of seed, tacking agents, wood or paper fiber mulch, and fertilizer are mixed into a slurry in a tank on a machine called the hydro seeder then sprayed out onto the ground similar to a fire truck. Once the mix is sprayed out it bonds to the ground and the mulch absorbs water helping the seeds to better grow and retaining the soil amendments added in the slurry. Everything in this process is environmentally friendly.
Bonded Fiber Matrix Mulch “B.F.M.”
Bonded Fiber Matrix mulch (BFM) is a unique class of hydroseeding erosion control product. The term is accepted within the erosion control industry to categorize hydraulically applied products which are designed, tested and proven to match or exceed the performance of erosion control blankets. These products can be designed to bond mechanically or hydraulically depending on seasonal application parameters. BFMs will reduce water runoff and channeling, while maximizing seed germination and plant growth. The applications can protect virtually any slop and soil type, including near-vertical surfaces.
BFM does not damage existing vegetation; therefore it can be used on slopes with existing vegetation. Product certification (lab certified specifications) is not provided by all manufacturers of Bonded Fiber Matrix, but we only use certified mulches to ensure the best management practice. This product cannot be properly applied by most hydroseeders due to the technical and mechanical needs necessary to insure proper application. Not only are we able to correctly apply BFM, we are a preferred vendor in testing new products and applications for suppliers.
Silt fence systems, when properly located and installed, are designed to remove most suspended solids from captured sheet flows. These products enable settlement of sands, most silt and some clay on their up-gradient or ponded side, while allowing significantly clarified water to discharge through the structure. Their performance is dependent on the time of impoundment as gravity requires time to pull suspended particles downward through the water column. There are numerous types of silt fence and we can assist you in determining the most effective and economical type for your project.
Wattles are an elongated tube of compacted straw and/or other fibers wrapped in UV stabilized, degradable, tubular, polypropylene, plastic netting. They come in various sizes ranging from 9 inches to 20 inches in width, and 10 feet to 25 feet in length. Wattles are used for temporary and permanent erosion and sediment control applications. They are commonly installed along the contours or at the base of a slope to help reduce soil erosion and retain sediment.
Wattles are designed to allow runoff water to penetrate through the fiber while reducing sediment migration. They function as slope interruption devices and therefore shorten slope lengths by reducing runoff velocity and the potential for sheet erosion and rill formation.
Wattles provide a cost-effective alternative to other sediment trapping devices, can be easily installed and removed, and have low maintenance costs when compared to silt fence or straw bales. Improper wattle installation can result in escaping sediments and may be subject to serious fines or work stoppages. Our SWPPP installation crews have tools expressly made to ensure proper installation and our installation work is carefully supervised by a certified SWPPP project manager.
Erosion Control Blankets
Erosion control blankets successfully limit soil erosion and assist with establishing vegetation on projects ranging from manicured residential lawns to severe slopes to moderate-velocity storm flow zones. Blankets provide immediate erosion protection from precipitation impact, sheet flows and moderate-shear concentrated flows for virtually all anticipated site-specific conditions.
To meet varying site demands, there are two major types of matting: temporary and permanent. Temporary blankets are degradable and are typically made of a variety of organic matrixes, including straw, coir fiber, and a blend of both. Non-degradable plastics are used in permanent mats; these offer long-term protection for critical areas. Blankets have many benefits, including the ability to reduce wide daily temperature swings, moderate soil temperatures [cooler in hot weather and warmer in spring/fall situations], reduce moisture loss attributed to evaporation or wind desiccation, protect sloping and reduce water velocity.
There are numerous products on the market that carry the “geo” prefix. These are manufactured products that have been thoroughly tested and technically graded to be used in a variety of erosion control and revegetation applications. We will gladly discuss which product would effectively meet your needs, whether it is grids, membranes, cells, liners, or textiles. Textiles are the most widely used and as such, we have provided a brief description of them below.
Cellular confinement offers many solutions for combating the ravages of erosive stresses and destabilizing forces. The textured panel surfaces and perforation pattern create a honeycomb structure which allows for three dimensional reinforcement and soil confinement. By utilizing various depths and different cell sizes, this product provides innovative solutions to challenging soil stability problems in slope and channel protection, load support and earth retention applications.
Additionally, when applications require exposed panels, available color options enable the completed structure to blend into the surrounding landscape, completing the task in an aesthetically tasteful manner.
Riprap revetments are a very effective and popular method of controlling erosion created by unchecked flows of water. A riprap revetment is a facing of stone or other armoring material used to protect a water channel, drainage area, stream bank or shoreline. The riprap revetment consists of layered, various-sized rocks placed on a sloped bank in a way that will stand up to the fluctuations in water levels and flowing conditions.
As a riprap revetment is susceptible to displacement and deterioration of the rock, it is essential to a project’s success that correct engineering and installation be performed. When displacement and deterioration occur, the effectiveness of the structure is greatly reduced which adds directly to long term maintenance costs.
Gabions & Mattresses
Gabions and mattresses provide flexible armor protection in zones of high turbulence and rapid concentrated flows. Their mass and durability make them ideal for such applications as waterways, channels, seawalls, flumes, outfall pads, control structures, retaining walls and energy dissipaters. The open construction of the baskets and mattresses allows drainage of subsoil or retained soils while maintaining flexibility to accommodate reasonable subsoil movements. With proper planning, gabions and mattresses will support vegetation.
Sedimentation ponds and siltation structures are used to minimize sediment contributions to surface waters. Sedimentation ponds retain water and slow the velocity so that sediment can settle to the bottom of the structure. They can be excavated or may be constructed with an embankment of earthen materials.
It is recommended the ponds be located outside of natural drainages; but if the site is located in a drainage area, the water produced up-gradient from the site should be routed through an adequately sized culvert under the disturbed area and sedimentation pond or around the disturbed area. One of our primary concerns in developing a sediment pond is to create it so that required future maintenance can be done effectively and economically.
One of the most common, illegal discharges from construction sites is cleanout from concrete installations. Concrete and cementitious (cement, grout, stucco, plaster, mortar) washout wastewater is corrosive and caustic. The pH of concrete can be over 12 – essentially the same as a common liquid drain cleaner or other household cleaners.
We will design your washout to:
Comply with enforced federal and state laws Minimize risk of accidental discharge Withstand job site activity
We have had to replace competitor’s washouts after they failed inspections and generated substantial fines. We highly encourage you to make this a job site priority.
Track-out from truck tires is a well-known contributor to storm water pollution. On a daily basis, vehicles enter and exit land-disturbing work sites such as mines, landfills, quarries, power plants and construction sites. As the trucks leave the site, they deposit dirt and debris onto public roads and highways – one truck, one trip, with 4 to 18 tires or more tracking out all types of substances.
As the federal government steps up efforts to monitor pollution source reduction, state and local governments are following suit, and environmental regulations are getting tougher. It is becoming increasingly crucial to employ the most effective vehicle tire-washing systems and technologies to reduce pollution at the source, and avoid stiff fines and penalties. We have recommended and installed systems that reduce track-out and help you avoid costly cleanups and eliminate off-site liabilities and exposure.