What is the difference between temporary and permanent Soil Erosion and Sedimentation Control (SESC) measures?
Temporary SESC measures should be used during construction to control soil erosion and prevent the loss of soil from the site or into wetlands or other waterways. Examples include properly trenched silt fence, stone check dams used in swales to slow water velocity over raw construction areas or other approved barriers between raw construction areas and waterways. Hay or straw bales are generally no acceptable. Temporary measures are removed at the completion of construction. Permanent SESC measures are used at project completion and remain in place. Examples of permanent soil erosion and sedimentation control measures are high velocity mulch blankets, riprap, seed and mulch, sod, earthen berms, and rock check dams to slow water velocity in a vegetated ditch.
