Proper placement of a silt fence is critical for its overall effectiveness and longevity on a project. It should be installed down-slope of disturbed areas where sheet flow runoff is expected to occur. It is highly effective when placed along the perimeter of a construction site, near the base of slopes, and around sensitive natural areas like wetlands. It should never be installed across streams, channels, ditches, or any areas where concentrated concentrated water flows are present, as the high velocity will quickly destroy the barrier.
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