Sediment control BMPs are considered to be which type of measure?

Sediment control BMPs are considered to be which type of measure?

• A. Primary
• B. Local
• C. Secondary
• D. Tertiary

Answer: (C)

Sediment control BMPs are a secondary measure because they come into play after initial erosion and stabilization efforts to capture sediment that has already been mobilized. The first line of defense focuses on preventing erosion and keeping exposed soil to a minimum. Once sediment-laden runoff is being produced, secondary controls such as sediment basins, silt fences, and inlet protections trap or remove the sediment before it leaves the site. Tertiary would be more advanced treatment or post-construction measures, which is why sediment controls fit the secondary category.

Sediment control BMPs are a secondary measure because they come into play after initial erosion and stabilization efforts to capture sediment that has already been mobilized. The first line of defense focuses on preventing erosion and keeping exposed soil to a minimum. Once sediment-laden runoff is being produced, secondary controls such as sediment basins, silt fences, and inlet protections trap or remove the sediment before it leaves the site. Tertiary would be more advanced treatment or post-construction measures, which is why sediment controls fit the secondary category.