Which factor determines the number of post-abatement clearance samples to collect?

Which factor determines the number of post-abatement clearance samples to collect?

• A. The number of rooms treated
• B. The type of sampling conducted
• C. Whether work was interior or exterior
• D. The schedule of the project

Answer: (C)

Post-abatement clearance sampling is guided by where the removal work took place. If the work was done inside the building, the interior environment is at risk of dust settling on multiple surfaces across rooms, so the clearance plan typically requires collecting more wipe samples from various interior locations to prove the entire area meets the dust clearance standard. When the work is outside, the focus shifts to exterior surfaces and surrounding soil, and the interior may not require as many wipe samples, since fewer interior surfaces were exposed to disturbing lead dust. In short, interior work generally necessitates more interior-area clearance sampling than exterior work, making the interior/exterior context the key factor in determining the number of post-abatement clearance samples.

Post-abatement clearance sampling is guided by where the removal work took place. If the work was done inside the building, the interior environment is at risk of dust settling on multiple surfaces across rooms, so the clearance plan typically requires collecting more wipe samples from various interior locations to prove the entire area meets the dust clearance standard. When the work is outside, the focus shifts to exterior surfaces and surrounding soil, and the interior may not require as many wipe samples, since fewer interior surfaces were exposed to disturbing lead dust. In short, interior work generally necessitates more interior-area clearance sampling than exterior work, making the interior/exterior context the key factor in determining the number of post-abatement clearance samples.