What is the primary requirement for sediment forebays during installation?

The primary requirement for sediment forebays during installation is that they must be sized based on total sediment storage. This sizing is critical because it ensures that the forebay effectively captures and retains sediment before it can enter the larger sediment basin or other downstream systems. Proper sizing based on potential sediment load helps to prolong the lifespan of the sediment control features, maintains water quality, and minimizes downstream pollution.

Sediment forebays are designed to settle out the coarser sediments, providing an initial treatment step that helps enhance the overall effectiveness of sediment basins. If they are not adequately sized, they may not achieve their purpose, resulting in excessive sediment transport downstream and potential failure of the stormwater management system.

Other considerations, such as location or construction materials, do not represent primary installation requirements. Sediment forebays can be effectively utilized in various settings, not just urban areas, and can be constructed from different materials depending on site-specific conditions and requirements, making the correct sizing and sediment storage capacity the focal point for their installation.