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Corrugated Retention and Filtration System (CRAFS)

CRAFS is a corrugated retention and filtration system for sediment control in critical spots where there is a heavy concentration of runoff. For example, areas where runoff accumulates and can overflow, knock down, scour beneath, or wash away standard silt fences. Unlike a traditional sediment retention device (SRD), CRAFS’ corrugated design strengthens the device to reduce the chance of failure and offers a greater amount of fabric surface area to provide rapidly filtered seepage through the system. When installed with a silt fence, CRAFS provides a “control outlet” to prevent sediment contamination of adjacent properties and waterways.


  • Corrugated design strengthens the device and reduces the chance of failure
  • Provides rapidly filtered seepage with 95% trapping efficiency
  • Eliminates the need for costly sediment basins
  • Upstream and downstream posts provide three-dimensional stability

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