What's not recommended for final clearance?

What's not recommended for final clearance?

• A. Floors
• B. Walls
• C. Ceilings
• D. Windows

Answer: (B)

Final clearance testing targets surfaces where lead dust from renovation is most likely to settle. The standard approach is to take dust samples from floors and interior window areas (sills and troughs) within the work area to verify that dust levels meet safety standards. Walls are vertical surfaces and are not routinely tested because lead dust from typical renovations tends to accumulate on horizontal surfaces and window-related areas, not on walls. They’re tested only if work was performed on them or if there’s a specific concern about contamination there. So, walls are not recommended for final clearance. Floors and windows are the surfaces that are normally checked, which is why walls fit as the best answer.

Final clearance testing targets surfaces where lead dust from renovation is most likely to settle. The standard approach is to take dust samples from floors and interior window areas (sills and troughs) within the work area to verify that dust levels meet safety standards. Walls are vertical surfaces and are not routinely tested because lead dust from typical renovations tends to accumulate on horizontal surfaces and window-related areas, not on walls. They’re tested only if work was performed on them or if there’s a specific concern about contamination there. So, walls are not recommended for final clearance. Floors and windows are the surfaces that are normally checked, which is why walls fit as the best answer.