When should sampling be performed to confirm that removal is complete?

• A. Before removal
• B. During removal
• C. After removal and cleanup to verify clearance
• D. Never

Answer: (C)

The important point here is that you verify safety after all removal and cleanup are finished. Once the work is done and the area has been cleaned and decontaminated, you perform clearance sampling to confirm that airborne fibers are below regulatory limits and that surfaces are clean enough to reoccupy. Doing sampling during removal wouldn’t reflect the final state—fibers can be released as work proceeds, and the area isn’t yet in a safe, stable condition. Sampling before removal also wouldn’t show whether all asbestos has actually been removed or properly cleaned. So, post-removal and cleanup to verify clearance is the moment to sample, to prove the space meets the required standards before it’s released for use.