Which of these techniques can help minimize sediment pollution?

Minimizing site grading is an effective technique for reducing sediment pollution because grading can disturb the soil surface, leading to an increased risk of erosion, especially in areas with loose or sandy soils. When land is excessively graded or cleared, it strips away vegetation that holds the soil in place, making it more susceptible to being washed away by rain or wind. By keeping site grading to a minimum, the natural contours of the land can help maintain vegetation cover, which stabilizes the soil and decreases the likelihood of sediment runoff into nearby water bodies.

In contrast, excessive land development often leads to increased impervious surfaces and soil disturbance, paving roads with asphalt creates hard surfaces that don’t allow for water infiltration and can lead to higher runoff and sediment transport, and installing more drainage systems without proper consideration can exacerbate sediment issues by funneling water more rapidly across disturbed areas. Thus, minimizing site grading is a strategic approach to maintain soil stability and reduce erosion, ultimately minimizing sediment pollution.