Oregon Construction Contractors (CCB) Practice Test

What is the main purpose of a water misting system on a job site?

1. To enhance worker productivity

2. To control dust and loss of soil

3. To provide hydration for workers

4. To improve air quality

The correct answer is: To control dust and loss of soil

The main purpose of a water misting system on a job site is to control dust and loss of soil. Water misting systems are designed to create a fine mist that can effectively suppress dust particles suspended in the air. This is particularly important on construction sites where the movement of heavy machinery and various activities can generate a significant amount of dust, which not only creates visibility issues but can also pose health risks to workers and the surrounding community. By controlling dust, these systems contribute to a safer and more efficient working environment. Additionally, they help prevent soil erosion that can occur from high winds or water runoff, thus maintaining the integrity of the construction site and the surrounding ecosystem. The application of water mist is a practical solution that addresses multiple concerns—environmental impact, health, and safety—all while maintaining productivity on the job site.