Peer-reviewed research published in the Journal of Environmental Quality (2007) compared compost-filled filter socks with conventional silt fencing.
The study demonstrated that compost filter socks achieved sediment removal statistically comparable to silt fencing while reducing water accumulation under tested conditions.
In one comparison, water accumulated 75% deeper behind the silt fence after 30 minutes. Researchers also found that compost filter socks could resist overtopping more effectively at specified runoff rates, despite having a lower barrier height.
These findings highlight the importance of three-dimensional filtration, hydraulic performance, and runoff management in effective sediment control.
Reference: Keener, H. M., Faucette, B., & Klingman, M. H. (2007). Flow-Through Rates and Evaluation of Solids Separation of Compost Filter Socks versus Silt Fence in Sediment Control Applications. Journal of Environmental Quality, 36, 742–752. https://doi.org/10.2134/jeq2006.0359
The findings revealed significant advantages for the tested sediment socks:
75% Greater Water Buildup Behind Silt Fencing: After 30 minutes, water depth behind the silt fence was 75% greater than behind the sediment sock.
Reduced Overtopping Risk: Sediment socks half the height of traditional silt fencing were less likely to overtop under specified runoff conditions.
Comparable Sediment Removal: Researchers found no statistically significant difference in sediment removal between the two systems.
Traditional silt fencing relies heavily on retaining and ponding runoff to allow sediment to settle. Three-dimensional sediment socks provide an alternative approach, allowing water to move through filtration media while retaining sediment.
This research demonstrates why hydraulic performance, sediment retention and overtopping resistance are important considerations when selecting sediment-control systems.
Research Source: Keener, H. M., Faucette, B., & Klingman, M. H. (2007). Flow-Through Rates and Evaluation of Solids Separation of Compost Filter Socks versus Silt Fence in Sediment Control Applications. Journal of Environmental Quality, 36(3), 742–752. DOI: 10.2134/jeq2006.0359.
Findings relate to the compost filter socks and silt fences evaluated under the study’s testing conditions. Fisher Sediment Barrier was not directly tested in this research.
Close with a disclosure that the Include a brief disclosure that the study evaluated compost filter socks, not Fisher Sediment Barrier. This maintains credibility with engineers, municipalities and contractors.
