What is the minimum required standing vegetative cover for an inactive site to avoid stabilization?

• A. 10%
• B. 20%
• C. 30%
• D. 50%

Answer: (A)

The minimum required standing vegetative cover for an inactive site to achieve stabilization is 10%. This threshold helps ensure that the soil is protected from erosion and that dust is minimized, which is particularly important in dust-generating operations. When at least 10% of the area is covered with vegetation, it provides sufficient ground cover to anchor the soil, absorb moisture, and shield the surface from wind and rain. This coverage is a key component in effective land management practices aimed at preserving environmental quality and preventing air pollution.

Higher percentages of vegetative cover, while beneficial, may not be strictly necessary for stabilization to occur; thus, the specified minimum is sufficient to meet regulatory requirements and achieve the intended protective benefits for a site that is no longer actively being used for dust-generating activities.