SEDIMENT CONTROL AND TRAPS
Erosion and sediment control problems
are often associated with road building, right-of-way
construction and slope failures. These problems can
frequently be prevented through planning and implementation
of an erosion and sediment control plan. A runoff, erosion
and sediment control plan includes the use of sediment
traps, in association with sediment control structures
to trap suspended sediment on site.
Sediment traps are temporary or permanent
sediment control structures that reduce water velocity
and allow soil particles to settle. The remaining water
is filtered through geotextile or organic type structures,
such as straw bales, before entering a storm water system
or natural watercourse. Sediment traps are simple to
construct and relatively inexpensive; they can also
be removed or vegetated to anchor accumulated sediment.
Monitoring and repairs are important components of a
sediment control plan. Fill should be excavated and
removed to a stable location to increase the trap storage
capacity. These traps are often under estimated in their
sediment trapping capabilities; however, if designed,
constructed, and maintained correctly, they contribute
significantly to sediment control in a project.
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