Environmental Protection Agency (EPA) Lead Risk Assessor Practice Exam

What dust lead level is considered the acceptable threshold for hazard screening on floors?

1. 15 ug/ft2

2. 25 ug/ft2

3. 50 ug/ft2

4. 75 ug/ft2

The correct answer is: 25 ug/ft2

The acceptable threshold for hazard screening on floors is established at 25 micrograms per square foot (ug/ft2). This level is significant because it reflects the recognized health risks associated with lead exposure, especially in environments where children may be present. Studies have shown that lead can cause various health issues, including developmental problems in children, even at low exposure levels. The threshold of 25 ug/ft2 serves as a guideline to prompt further investigation or remediation efforts in settings where lead dust is present, thereby helping to ensure a safer living environment. By adhering to this standard, risk assessors can efficiently identify areas that may require attention and interventions to prevent lead exposure, particularly in older homes and buildings where lead-based paints may have been used. Understanding these threshold levels is critical when conducting risk assessments and ensuring compliance with EPA regulations aimed at minimizing the risk of lead exposure in communities.