Corrugated Retention & Filtration System
CRAFS® is a corrugated retention and filtration system for sediment control best used in critical spots (heavy concentrations of sediment runoff). This includes areas where runoff accumulates and can overflow, knock down, scour beneath and/or wash away other devices – like standard silt fences.
Unlike a traditional sediment retention device (SRD), CRAFS’ corrugated design strengthens the device and reduces the chance of failure. It intercepts runoff, then divides it within a series of retention wedges – cleaning / filtering out most sediment. Each retention wedge provides a greater amount of fabric surface area to provide rapid filtration (or seepage) through the system.
When installed with silt fence, CRAFS provides a “control outlet” that retains sediment with “95% trapping efficiency.” This helps prevent sediment contamination of adjacent properties and waterways, eliminating the need for costly sedimentation basins!
– Corrugated design strengthens device and reduces chance of failure
– Upstream and downstream posts provide three-dimensional stability
– Can eliminate need for costly sediment basins
– Provides rapid filtered seepage with 95% trapping efficiency