Which statement describes how clearance is demonstrated after lead-based paint work?

Which statement describes how clearance is demonstrated after lead-based paint work?

• A. Dust wipe
• B. Visual inspection only
• C. Air sampling
• D. XRF

Answer: (A)

Clearance after lead-based paint work is shown by measuring residual lead dust on surfaces, not just by what you can see. The standard way to do this is to take dust wipe samples from representative surfaces in the work area (such as floors and window sills) after cleaning, have them analyzed by an approved lab, and compare the results to the established clearance criteria. This directly assesses whether the area is free of lead dust at levels considered safe for occupancy. Visual inspection alone isn’t enough because lead dust isn’t always visible, and paint might appear clean while still leaving detectable lead dust on surfaces. XRF devices are used to identify lead content in paint on surfaces before or during work, but they don’t assess the amount of lead dust on cleaned surfaces. Air sampling isn’t the standard method for confirming post-work clearance in typical lead renovation scenarios; it measures airborne concentrations during work rather than surface contamination. So dust wipe sampling provides the appropriate, direct measure of surface lead contamination needed to demonstrate clearance.

Clearance after lead-based paint work is shown by measuring residual lead dust on surfaces, not just by what you can see. The standard way to do this is to take dust wipe samples from representative surfaces in the work area (such as floors and window sills) after cleaning, have them analyzed by an approved lab, and compare the results to the established clearance criteria. This directly assesses whether the area is free of lead dust at levels considered safe for occupancy.

Visual inspection alone isn’t enough because lead dust isn’t always visible, and paint might appear clean while still leaving detectable lead dust on surfaces. XRF devices are used to identify lead content in paint on surfaces before or during work, but they don’t assess the amount of lead dust on cleaned surfaces. Air sampling isn’t the standard method for confirming post-work clearance in typical lead renovation scenarios; it measures airborne concentrations during work rather than surface contamination. So dust wipe sampling provides the appropriate, direct measure of surface lead contamination needed to demonstrate clearance.