What is a requirement for gravel pads described in Rule 310?

• A. They must cover all visible soil
• B. They must be located away from dust sources
• C. They must be maintained
• D. They must be made of crushed stone

Answer: (C)

The requirement that gravel pads must be maintained is essential for ensuring their effectiveness in controlling dust and managing erosion. Maintenance involves regularly inspecting the pads, adding gravel as needed, and repairing any areas that may have become uneven or degraded over time. Well-maintained gravel pads provide a stable surface that minimizes dust generation from vehicle traffic, thereby contributing to compliance with Rule 310's objectives of reducing air pollution caused by dust. Proper maintenance directly impacts the performance of the gravel pads, reinforcing their role in mitigating the environmental and health issues associated with dust emissions.