DEQ Stormwater Management Inspector Practice Test

In erosion and sediment control planning, the final stabilization step is when every disturbed area on the site is permanently stabilized. This means establishing a lasting cover or other long‑term stabilization method so the soil won’t easily erode again under normal conditions. It marks the end of active erosion control efforts—the site has achieved a stable, long‑term condition with the permanent vegetation or structures in place.

Temporary stabilization is used during construction to limit erosion, and ongoing BMPs are installed and kept up to control runoff while work continues. But the final step is the complete permanent stabilization of all disturbed areas, not just maintaining controls or stabilizing remaining areas temporarily.