Proper placement is critical for the effectiveness of a silt fence during a project. It should be installed at the bottom of a slope or along the perimeter of a construction site where sediment-laden runoff is expected to occur. You should never place a silt fence across a permanent waterway, stream, or any area where there is concentrated flow like a ditch or a gully. The silt fence must be positioned so that it follows the contour of the land to ensure that water ponds evenly along the length of the barrier.
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