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Water Supply Engineering
Published in P.K. Jayasree, K Balan, V Rani, Practical Civil Engineering, 2021
P.K. Jayasree, K Balan, V Rani
Sediment from construction sites is managed by installation of the following: Erosion controls such as mulching and hydroseeding with natural fiber geotextiles.Sediment controls such as sediment basins and silt fences.
Erosion
Published in Karlheinz Spitz, John Trudinger, Mining and the Environment, 2019
Karlheinz Spitz, John Trudinger
Erosion and sediment controls should be planned and designed as a sequence of components that incorporates the following five potential measures (Figure 25.4): (1) minimizing land disturbance; (2) managing run-on to disturbed areas; (3) managing drainage within disturbed areas; (4) managing ground cover; and finally (5) managing runoff and sediment exiting disturbed areas. These are listed in priority order, as the aim is to favor preventative measures, minimizing the need for corrective measures and repairs.
Sustainable built environment
Published in Giovanni C. Migliaccio, Len Holm, Introduction to Construction Project Engineering, 2018
Giovanni C. Migliaccio, Len Holm
The SWPPP relies on erosion control as a primary means of preventing storm water pollution. Mats, geotextiles, and erosion control blankets may be used. Sediment controls provide a necessary secondary means of controlling storm water pollution runoff. Silt fences are often used as sediment control measures. The plan should address measures to be taken to control storm water flowing onto and through the project site, stabilize soils on site, protect storm drain inlets, and retain sediment on site.
Assessment of the effects of land use/cover changes on soil loss and sediment export in the Tul Watershed, Northwest Ethiopia using the RUSLE and InVEST models
Published in International Journal of River Basin Management, 2023
On the other hand, areas defined as a very mild and slight level of sediment yield intensity grew, while those classified as moderate, severe, and very severe levels of sediment yield intensity declined. The result indicates that the sediment output in all land uses/covers continually decreased attributable to watershed management intervention since 2003. Effective sediment control measures, such as check dams, terracing, and plantation practices caused a significant reduction in sediment yield at the watershed level (Nabi et al., 2020; Roba et al., 2021; Tsegaye & Bharti, 2022; Zhao et al., 2016). Sustainable soil management should be adopted to restore degraded lands (Nut et al., 2021).
Building foundations for source-to-sea management: the case of sediment management in the Lake Hawassa sub-basin of the Ethiopian Rift Valley
Published in Water International, 2021
Mulugeta Dadi Belete, David Hebart-Coleman, Ruth E. Mathews, Cryton Zazu
When designing interventions to deliver the four orders of outcome indicated above, their feasibility and applicability will need to be assessed as follows: Does the intervention or suite of interventions distribute benefits equitably along the S2S continuum? Each sediment control measure will need to be evaluated in terms not only of how competently it reduces erosion but also how it benefits communities along the upstream–downstream continuum.Does the intervention allocate costs appropriately amongst the various stakeholders? The costs of implementing sediment control measures and/or land restoration may normally be allocated solely to upstream communities near the sites of erosion, even when the erosion has occurred due to practices and behaviours that are no longer used. With downstream parties also benefitting from these interventions, a distribution of costs amongst beneficiaries may need to be considered.Does the intervention provide incentives or co-benefits to those who are changing their behaviours? When changes in practices are required to reduce sediment erosion, the costs for these changes in practices need to be considered and mechanisms, such as, for example, payment for ecosystem services considered to incentivize these behaviour changes.Are the new practices to be implemented feasible with current capacities and resources? Requiring the use of new practices may have a cost, and there may be a need for technical assistance or access to currently unavailable equipment or other resources, without which there would be a barrier to uptake.Does the intervention depend upon new agreements or governance instruments? The governance baseline may reveal activities that fall within policy gaps and managing these activities may require new instruments and institutional mandates to be adopted.Is cross-sectoral cooperation needed to implement the intervention and, if so, are mechanisms in place to facilitate this cooperation? Activities leading to sediment erosion may provide multiple benefits such as sand mining, creating an opportunity for youth employment whilst supplying materials for rapid urban expansion. Any intervention targeted specifically at this sector may need to identify viable alternatives, whether in terms of employment, increased oversight of sand-mining activities or alternative sources of construction materials.