During a routine inspection of an aggregate plant, excessive dust is observed emanating from a conveyor transfer point. Which of the following is the most effective engineering control for this issue?

Question: During a routine inspection of an aggregate plant, excessive dust is observed emanating from a conveyor transfer point. Which of the following is the most effective engineering control for this issue?

Answer options: ✅ Implementing a water spray system at the transfer point.

• Requiring all workers in the area to wear N95 respirators.
• Increasing the frequency of cleaning around the conveyor.
• Relocating the transfer point to a less trafficked area of the plant.

Correct answer: Implementing a water spray system at the transfer point.

Explanation: CCOHS and provincial regulations like Ontario Regulation 213/91 Section 136 specify that local exhaust ventilation or water sprays are effective engineering controls to suppress dust at transfer points, reducing exposure to airborne particulates.