What is the dust level standard for window sills?

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Multiple Choice

What is the dust level standard for window sills?

Lead dust standards are used to judge whether cleanup or remediation has been effective after work on homes with lead-based paint. For window sills, the benchmark is 100 micrograms of lead per square foot on a dust wipe. This surface tends to accumulate dust from fingers and activities near the window, so the threshold is set to protect children who may contact the sill and then transfer dust to their mouths. If a wipe sample from a sill measures more than 100 μg/ft2, cleaning and retesting are needed until all samples meet or fall below that level. The other numbers would either be unrealistically strict, too lenient, or not align with standard sill cleanup requirements.

Lead dust standards are used to judge whether cleanup or remediation has been effective after work on homes with lead-based paint. For window sills, the benchmark is 100 micrograms of lead per square foot on a dust wipe. This surface tends to accumulate dust from fingers and activities near the window, so the threshold is set to protect children who may contact the sill and then transfer dust to their mouths. If a wipe sample from a sill measures more than 100 μg/ft2, cleaning and retesting are needed until all samples meet or fall below that level. The other numbers would either be unrealistically strict, too lenient, or not align with standard sill cleanup requirements.

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