Innovations in Silt Control Help Prevent Silt Fence Blowouts
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Abstract:Effective sediment and erosion control at construction sites has become an ongoing and dynamic concern. Rulings by the U.S. Environmental Protection Agency, the Federal Highway Administration (FHWA), and State departments of environmental protection show the desire of those agencies to control soil particles associated with runoff waters. Of the methods identified for temporary erosion and sediment control on construction sites, silt fencing is one of the methods most widely applied. Silt fences slow the flow of stormwater with a geotextile fabric filter, allowing time for sediments to settle on the project. Silt fencing is poorly equipped to deal with heavier loads imposed on it by storms. The force of additional water buildup during storms often overwhelms fence supports and allows silt-laden water to escape from the site into nearby streams, streets, and properties. Due to such occurrences, the improper condition of silt fences is increasingly the subject of violations cited on State department of transportation (DOT) construction projects.
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