Certified Storm Water Operator Practice Exam

What is the minimum size of disturbance that requires a SESC permit and plan?

1. 0.5 acres

2. One acre

3. Two acres

4. Five acres

The correct answer is: One acre

The minimum size of disturbance that mandates a Soil Erosion and Sediment Control (SESC) permit and plan is one acre. This requirement is set to ensure that any land clearing or construction activity that has the potential to significantly impact soil erosion and sediment runoff is properly managed. When the disturbed area reaches one acre, the potential for significant sedimentation into nearby water bodies increases, warranting proactive measures to control erosion and protect water quality. A SESC permit and plan provide guidelines to minimize environmental impacts by implementing practices to control erosion and manage sediment runoff effectively. Smaller disturbances may not require the same level of oversight because they are deemed less likely to contribute to significant erosion issues or water pollution. Consequently, permitting processes and plans are focused on larger disturbances where the risk levels necessitate more stringent control measures. This framework helps in maintaining environmental integrity while allowing for construction and development activities.