What factor can contribute to the resuspension of dust particles at a construction site?

• A. Moisture in the soil
• B. Wind speed
• C. Low traffic volume
• D. Well-maintained equipment

Answer: (B)

Wind speed is a significant factor that can contribute to the resuspension of dust particles at a construction site. When wind speeds increase, they can lift dust particles that have settled on surfaces, causing them to become airborne. This resuspension can occur even with relatively light winds, particularly if the surface materials at the site are dry and loose. The impact of wind on dust resuspension is accentuated in areas where construction activities disturb the soil, such as grading or excavation.

While moisture in the soil can help bind particles together and reduce dust generation, high wind speeds can counteract that benefit by blowing away any loose particles. A low traffic volume typically results in less disturbance of the ground surface, which can lead to lower dust generation overall. Similarly, well-maintained equipment is important for minimizing dust emissions during operation but does not influence the resuspension of already settled particles. Thus, wind speed stands out as the primary factor among the choices that can actively cause previously settled dust to become airborne again.