Environmental Protection Agency (EPA) Lead Risk Assessor Practice Exam

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What is the HUD clearance level for dust samples collected on floors during a lead hazard screen?

10 ug/ft2
25 ug/ft2
50 ug/ft2
100 ug/ft2

The correct answer is: 25 ug/ft2

The clearance level for dust samples collected on floors during a lead hazard screen, as set by the Department of Housing and Urban Development (HUD), is indeed 25 micrograms per square foot (ug/ft2). This standard is based on the efforts to ensure that properties are safe for residents, particularly for children who are more vulnerable to the adverse health effects of lead exposure. The level of 25 ug/ft2 has been established to indicate the threshold below which lead dust is considered to be at a safe level, allowing for clearance after lead hazard control methods have been employed. This is critical in lead risk assessments and remediation efforts, as it signifies that dust levels are low enough to not pose a health risk to occupants, thus playing an essential role in public health protection. Understanding this threshold aids in the effective evaluation of lead exposure risks in residential environments, particularly in homes built before the 1978 ban on lead-based paint. This importance is underscored by the need for compliance with both HUD regulations and broader EPA guidelines on lead health risks.