Environmental Protection Agency (EPA) Model Lead Based Paint Risk Assessor Practice Test

What is the minimum number of soil samples recommended for enclosed areas such as gardens?

1. 1

2. 3

3. 5

4. 8

The correct answer is: 3

The recommendation to collect a minimum of three soil samples for enclosed areas such as gardens is based on best practices for environmental testing and risk assessment, particularly concerning lead contamination. Collecting multiple samples allows for a more accurate assessment of the lead levels in the soil. It helps account for variability in contamination that can occur due to factors such as location within the garden, differences in exposure, and patterns of use. A single sample would not provide a representative measure of the overall lead levels, as it may not capture areas of higher contamination. Therefore, three samples are essential for obtaining a clearer picture of environmental risk and ensuring effective remediation if lead is detected at harmful levels. This approach aligns with guidelines established by the EPA for effective risk assessment in order to protect public health, especially in areas frequented by children.