Which is the correct sequence of construction in erosion and sediment control planning?

Which is the correct sequence of construction in erosion and sediment control planning?

• A. Minimize disturbance; stabilize areas; install and maintain BMPs; stabilize remaining disturbed areas; complete permanent stabilization.
• B. Stabilize remaining disturbed areas; complete permanent stabilization; install and maintain BMPs; stabilize areas; minimize disturbance.
• C. Minimize disturbance; install and maintain BMPs; stabilize areas; complete permanent stabilization; stabilize remaining disturbed areas.
• D. Minimize disturbance; stabilize areas; complete permanent stabilization; install and maintain BMPs; stabilize remaining disturbed areas.

Answer: (A)

The sequence emphasizes controlling erosion by acting early and maintaining protection as work progresses, finishing with long-term stabilization. Start by minimizing disturbance to reduce the amount of soil exposed to weather and erosion. Then immediately stabilize the disturbed areas to prevent loose soil from eroding before more controls can be installed. Install and maintain BMPs as construction moves forward so sediment control is active throughout the project. Next, stabilize any remaining disturbed areas to address erosion that wasn’t covered by initial stabilization. Finally, complete permanent stabilization, such as establishing permanent vegetation or other long-term cover, to keep the site secure once construction is done. This order keeps erosion risk lowest during active work and ensures a solid transition to long-term stabilization.

The sequence emphasizes controlling erosion by acting early and maintaining protection as work progresses, finishing with long-term stabilization. Start by minimizing disturbance to reduce the amount of soil exposed to weather and erosion. Then immediately stabilize the disturbed areas to prevent loose soil from eroding before more controls can be installed. Install and maintain BMPs as construction moves forward so sediment control is active throughout the project. Next, stabilize any remaining disturbed areas to address erosion that wasn’t covered by initial stabilization. Finally, complete permanent stabilization, such as establishing permanent vegetation or other long-term cover, to keep the site secure once construction is done. This order keeps erosion risk lowest during active work and ensures a solid transition to long-term stabilization.