Environmental Protection Agency (EPA) Lead Risk Assessor Practice Exam

Which surfaces require monitoring under 20 sq. ft. for exterior surfaces in relation to lead regulations?

1. Plastic surfaces

2. Glass surfaces

3. Wood surfaces

4. Metal surfaces

The correct answer is: Wood surfaces

The requirement for monitoring exterior surfaces for lead regulations, particularly under 20 square feet, specifically pertains to wood surfaces. This is due to the fact that many older homes and buildings, particularly those built before the 1978 ban on lead-based paints, often have lead-based paint deteriorating on wooden structures. Regular monitoring of wood surfaces is essential because lead paint can become hazardous if it chips or deteriorates, leading to lead dust and paint chips that can pose significant health risks, especially to children. In contrast, while lead can be present on other materials, the focus on wood is particularly crucial because of its prevalence in the construction of older buildings and the likelihood of deterioration over time. Additionally, the nature of wood allows for the absorption of lead-containing products, making it more susceptible to contamination concerns. Understanding the regulations surrounding lead risk assessment involves recognizing which materials typically require more stringent monitoring due to their history with lead-based paints and their common presence in older structures. Hence, focusing on wood surfaces under these guidelines is essential for the protection of public health.