What is the federal standard dust lead hazard level for wipe sampling on interior windowsills?

The federal standard dust lead hazard level for wipe sampling on interior windowsills is set at 250 micrograms per square foot (µg/ft²). This threshold is significant in assessing lead hazards in residential environments, particularly where children may be present. It is used to identify whether the level of lead dust poses a risk to health and safety.

Standards like this are established by the United States Environmental Protection Agency (EPA) and the Department of Housing and Urban Development (HUD) to protect public health, especially for vulnerable populations such as children and pregnant women. When the lead dust concentration exceeds this federal standard, it indicates that remedial action may be necessary to reduce exposure and mitigate risk.

Understanding this standard is crucial for anyone involved in lead hazard evaluations or abatement work. It ensures compliance with health regulations and contributes to safer living environments.