Why Eco Fence?
Better Filtering – Eco fence is viewed as a superior water filtering Product. The filtering mate-rial can be composed to allow for removal of sediment, nutrients, harmful bacteria, heavy metals, and petroleum hydrocarbons. Additionally, used material can be spread and incorpo-rated into the soil improving soil composition. A local product, the filler is derived from indige-nous materials.
Simple Installation – No trenching needed! The makeup of eco fence allows installation right on the ground. This is especially important in sensitive areas where soil distubance is detri-mental and on frozen or paved surfaces. Long term, eco socks are even less expensive than traditional methods.
Reduce Failures – Eco Fence is naturally upright meaning it won’t collapse due to erosion or wind. Should the silt become too much, simply add more fence. Equipment may even pass over a eco fence in some situations. At the end of the project sim-ply cut off the netting and spread the compost material. In some situations the fence may even be seeded for an addtional level of natural protection.
Place on a flat, level grade running perpendicular to the sheet flow direction from the Area of Disturbance. Where two sections meet, overlap the adjoining ends, tightly butt together, and stake through each end. Barrier size should be determined according to local or state slope chart.
Slope interruption reduces erosion on slopes by dissipating the energy of runoff. Install barriers level, following the contour of new cut or fill slope. This technique is effective in preventing rills while permanent vegetation is being established.
Use barriers to divert water flow away from or around disturbed areas and in to a catch basin, sediment trap, sediment basin or vegetative area. Barrier should be weighted with sand or aggregate and compost should be dense (approximately 500/o passing through a 3/8″ sieve).
Use 8″ – 18″ diameter barriers on curbside for inlet protection. Blocks, sand bags or stakes may be used to secure barriers in place.
Filler Material Performance
Understanding the Sediment Removal Rate and Hydraulic Flow Rate (Performance) of Filler Material can be important in properly sizing and using CFS. Two measurable characteristics can be used to establish a performance range – the percent of Key Particulate, and the percent of Void Volume. In the example below, the percent of particulate passing through a 3/8″ sieve (Key Particulate) was measured at 430/o. The empty space within the compacted Filler Material (Void Volume) was measured at 620/o. These measurements correlate to an estimated Hydraulic Flow Rate of 5 g/min and sediment removal on the lower end of the scale. In general, a higher density Filler Material (i.e. lower Void Volume/higher Key Partic late) equates to the lower Hydraulic Flow Rate and Higher the Sediment Removal Rate.