Dust Levels for Hazard Screen - Window Sill are which value?

Dust Levels for Hazard Screen - Window Sill are which value?

• A. 10 ug/ft2
• B. 50 ug/ft2
• C. 100 ug/ft2
• D. 200 ug/ft2

Answer: (C)

Dust levels used in a hazard screen are quick indicators to decide if a surface might have a lead hazard and needs further action. For a window sill, the screening threshold is 100 micrograms per square foot. If a dust wipe from the window sill measures at or above this level, treat it as a potential lead hazard and proceed with additional testing or remediation. If the result is below 100, the surface is considered to meet the hazard-screen criteria, and you can continue with standard practices. This surface-specific threshold exists because different areas collect dust differently, so each surface has its own screening limit.

Dust levels used in a hazard screen are quick indicators to decide if a surface might have a lead hazard and needs further action. For a window sill, the screening threshold is 100 micrograms per square foot. If a dust wipe from the window sill measures at or above this level, treat it as a potential lead hazard and proceed with additional testing or remediation. If the result is below 100, the surface is considered to meet the hazard-screen criteria, and you can continue with standard practices. This surface-specific threshold exists because different areas collect dust differently, so each surface has its own screening limit.