Construction sites generally leave bare earth exposed – without any vegetation to protect it – which can temporarily have big environmental impacts nearby and far away.
Construction sites generally leave bare earth exposed – without any vegetation to protect it – which can temporarily have a big environmental impact on areas nearby and far away.
Run-off from the disturbed areas causes:
- Turbidity of water causing well-known problems to animal and vegetation life
- Degradation of soil quality at lower lying areas, limiting water infiltration and air circulation and thus increasing hydraulic erosion
- Run-off of top-soil and humus which afterwards limits the germination of seeds applied
The integration of the various compensatory and conservation measures available, should be realized from the preparation phase of the jobsite onwards and well into the establishment of the final vegetation cover.
There’s a wide range of tools available that should be used and adapted towards the actual, real situation taken live from the site.
- Sediment barriers: consist of filtrating fascines that are placed at the bottom of the endangered zone, permitting capture of sediment while letting water evacuate.
Application : Material storage, slopes, catchment areas
- Sediment filters: Preformed elements that contain a vegetal filter and help sediment deposit.
Application : normally installed upstream of rainstorm basins or areas with often high water flow rates
- Sediment Flocculation: These components incorporate a PAM that provokes water flocculation, which reduces and manages the speed of the stream.
Application: mounted upstream of sediment filters, when rainstorms or heavy rainfall is expected or when short term protection is needed.
- Surface Confinement: It concerns a hydrophilic vegetal component which can be or unrolled or projected, and that allows total confinement of an area.
Application: Material storage zone, or slope awaiting further processing.