Abstract: In areas where soil is exposed, such as construction sites, runoff and subsequent erosion and sedimentation can be minimized by applying best management practices (BMPs). Soil specialists have used the universal soil-loss equation (USLA), and later, a revised version, the R(revised)USLE and RUSLE2 to predict soil loss. The equation includes R (rainfall or runoff), K (soil erodibility), L (slope length), S (slope gradient or steepness), C (cover and vegetation), and P (erosion control practices). One construction site in Rohnert Park, California used catch basin protection for sediment and turbidity reduction. A highway widening project by the Tennessee Department of Transportation (TDOT) in Waynesboro, TN had a stream flowing under the road and used a specially designed pipe stopper to stop larger particles from entering the stream. Alongside the Grand Calumet River in Michigan, efforts are being made to reduce sediment contamination by using a large perimeter control device similar to a long, absorbent snake called Siltworm. The first geotextile designed specifically for vertical placement to control silt and sediment using different sieve-sized geotextiles within one roll was developed for use by the TDOT. These silt fences are made in bright colors so they avoid being run over by machinery and decrease the cost of overall construction while also being in line with environmentally conscious construction practices.
Publication Year: 2014
Publication Date: 2014-09-01
Language: en
Type: article
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