Storm Water Pollution Prevention Plan (SWPPP) Practice Test

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Which purpose does a sediment control BMP primarily serve?

To promote soil nutrient loss
To control sediment transport and improve water quality
To plant grass and shrubs
To excavate the site

The correct answer is: To control sediment transport and improve water quality

A sediment control best management practice (BMP) primarily serves to control sediment transport and improve water quality. Sediment control BMPs are implemented at construction sites or other disturbed areas to prevent soil erosion and reduce the amount of sediment that runoff can carry into nearby water bodies. Excess sediment in water can lead to issues such as habitat destruction, increased turbidity, and reduced light penetration, all of which can negatively affect aquatic life and overall water quality. By using various sediment control techniques—like silt fences, sediment basins, and erosion control blankets—these practices help to manage and mitigate the movement of sediment. This not only preserves the quality of water resources but also aids in maintaining the health of ecosystems and reducing the potential for flooding due to sediment accumulation in waterways.