Name one method to prevent soil erosion during excavation.

One effective method to prevent soil erosion during excavation is the installation of silt fences or the use of erosion control mats. These materials act as barriers, helping to intercept sediment that may otherwise be washed away by rainfall or surface runoff. Silt fences are typically made of a permeable fabric installed vertically in the ground to capture particulates while allowing water to filter through, reducing the speed at which water flows across disturbed soil. Similarly, erosion control mats provide a protective layer over the soil, helping to hold it in place and promote vegetation growth, which further stabilizes the area. Both methods are vital in managing sediment and protecting the surrounding environment during excavation activities.

Other methods like excavating at night or using heavy machinery do not directly address erosion control. Allowing water to drain freely can actually exacerbate erosion by increasing the speed and volume of runoff. In contrast, the use of erosion control measures focuses on actively stabilizing soil and preventing sediment loss.