Which of the following best describes aggressive sampling?

Aggressive sampling is best described by the use of methods that actively disturb materials to collect air or bulk samples for analysis. Employing equipment like leaf blowers to disperse dust aligns with this definition because it can create a greater release of asbestos fibers into the air from a surface, facilitating the sampling process by increasing the concentration of asbestos for collection.

This approach differs from other methods such as using a vacuum to collect samples or performing physical inspections of materials, which may not involve actively disturbing the environment to the same degree. In addition, collecting samples without disturbing the environment is contrary to the principle of aggressive sampling, as the essence of aggressive sampling is to create disturbance to obtain a more accurate representation of airborne contaminant levels.