Make sure you get the job done and keep the surrounding areas conserved with the Mutual Industries 5 ft. x 50 ft. Contractor Turbidity Barrier. This turbidity barrier is highly effective in allowing silt and sediment to settle out before being carried into adjacent or adjoining waterways. A chain at the bottom of the barrier holds it in place. This 4 in. floating barrier provides a restricted flow of silt laden runoff from construction sites.