What is the difference between minor disturbance and major disturbance of ACM?

• A. Minor disturbance involves substantial removal
• B. Minor disturbance triggers stricter controls
• C. Major disturbance is incidental handling
• D. Major disturbance involves substantial removal or disturbance, triggering stricter controls

Answer: (D)

Disturbance of asbestos-containing material is judged by the potential to release fibers. Minor disturbance means incidental handling with limited fiber release and is managed with standard work practices. Major disturbance means substantial removal or disturbance of ACM, which can release large amounts of fibers and therefore triggers stricter controls, such as licensed removal, engineered containment, air monitoring, and proper waste handling. The other options contradict how fiber release and control requirements scale with the amount of disturbance.