What is the dust level standard for floors?

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Multiple Choice

What is the dust level standard for floors?

The key idea is the level at which lead dust on a floor is considered a hazard based on wipe samples. Lead dust is measured in micrograms of lead per square foot (μg/ft²) from a floor wipe test. In this context, the floor dust standard used is 10 μg/ft². That means if a floor wipe shows 10 μg/ft² or less, the surface is generally not considered a lead hazard requiring remediation, while results above 10 μg/ft² indicate a lead dust hazard that may need cleanup and clearance testing after the work. The other numbers are not the threshold used for floors in this framework, so they don’t fit the common standard described in this material. Remember that surface-specific standards can vary (for example, windowsills have higher thresholds), but for floors the referenced standard here is 10 μg/ft².

The key idea is the level at which lead dust on a floor is considered a hazard based on wipe samples. Lead dust is measured in micrograms of lead per square foot (μg/ft²) from a floor wipe test. In this context, the floor dust standard used is 10 μg/ft². That means if a floor wipe shows 10 μg/ft² or less, the surface is generally not considered a lead hazard requiring remediation, while results above 10 μg/ft² indicate a lead dust hazard that may need cleanup and clearance testing after the work.

The other numbers are not the threshold used for floors in this framework, so they don’t fit the common standard described in this material. Remember that surface-specific standards can vary (for example, windowsills have higher thresholds), but for floors the referenced standard here is 10 μg/ft².

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