What does the "30-foot rule" in sediment control entail?

The "30-foot rule" in sediment control refers specifically to the limitation of soil disturbance within a certain distance from a water body. In this context, the correct option emphasizes that activities that disturb the soil should be limited to a maximum distance of 30 feet from bodies of water, such as streams, rivers, lakes, or wetlands. This guideline is designed to minimize the risk of sediment runoff and prevent the transport of pollutants into water bodies, thereby protecting water quality and aquatic habitats.

By restricting soil disturbance near water bodies, the rule helps to maintain vegetation that can filter sediments, absorb runoff, and provide stabilization to the soil, which is essential for effective erosion control. The rule is particularly important in construction and land development projects where activities can easily lead to increased sedimentation in nearby waters.