Certified Storm Water Operator Practice Exam

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What is the purpose of establishing SESC measures?

To increase construction efficiency
To limit the impact of sedimentation on water
To reduce overall project costs
To enhance aesthetic value of the site

The correct answer is: To limit the impact of sedimentation on water

Establishing Soil Erosion and Sediment Control (SESC) measures primarily aims to limit the impact of sedimentation on water bodies. When construction and land-disturbing activities occur, they can lead to soil erosion and the subsequent displacement of sediment into nearby waterways. This sediment can negatively affect water quality by increasing turbidity, which can harm aquatic life, disrupt ecosystems, and reduce the effectiveness of water treatment processes. Effective SESC measures are designed to control soil erosion at the source, manage stormwater runoff, and minimize the transport of sediment from construction sites. These measures often include erosion control blankets, sediment basins, and vegetative buffers, which help to filter and slow down water flow, allowing sediment to settle before it can reach water bodies. Thus, the fundamental goal of SESC is to protect water quality by minimizing sedimentation and its associated impacts.