Which method is used to demonstrate clearance after completing lead-based paint work?

Which method is used to demonstrate clearance after completing lead-based paint work?

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

Answer: (B)

After lead-based paint work, you need to show that the area is free of dangerous lead dust. The method used to demonstrate clearance is dust wipe sampling of key surfaces (such as floors and interior window sills/troughs) to measure residual lead dust and compare it to EPA clearance levels. This approach directly assesses the amount of lead dust present on surfaces, providing an objective, quantitative check of cleanliness. Visual inspection alone can miss fine dust, and XRF testing identifies lead in paint before work but not the amount of lead dust left after cleaning. Air sampling measures airborne lead during the work, not surface contamination to support post-work clearance. If the dust wipe results exceed the clearance limits, the area must be re-cleaned and re-tested until the results meet the required standards.

After lead-based paint work, you need to show that the area is free of dangerous lead dust. The method used to demonstrate clearance is dust wipe sampling of key surfaces (such as floors and interior window sills/troughs) to measure residual lead dust and compare it to EPA clearance levels. This approach directly assesses the amount of lead dust present on surfaces, providing an objective, quantitative check of cleanliness. Visual inspection alone can miss fine dust, and XRF testing identifies lead in paint before work but not the amount of lead dust left after cleaning. Air sampling measures airborne lead during the work, not surface contamination to support post-work clearance. If the dust wipe results exceed the clearance limits, the area must be re-cleaned and re-tested until the results meet the required standards.