CDPH Lead Inspector/Assessor California State Practice Exam

How far away from the foundation should spots be during Perimeter Soil Composite sampling?

1. 1 foot

2. 2 feet

3. 3 feet

4. 5 feet

The correct answer is: 2 feet

In Perimeter Soil Composite sampling, the recommended distance for sampling spots from the foundation is important to ensure accurate assessments of potential lead contamination in the soil surrounding a structure. Sampling too close to the foundation may not accurately represent the average lead levels in the area, as these levels can be influenced by lead-containing materials and maintenance activities near the building. Setting the distance at 2 feet provides a balance that minimizes the direct influence of foundation activities while still being close enough to capture potential runoff or lead deposition from the structure itself. This distance is typically recommended based on guidelines that emphasize the importance of obtaining samples representative of the environment that individuals, especially children, might be exposed to. Sampling at this distance helps to create a reliable assessment for contamination levels while ensuring safety and compliance with health standards related to lead exposure.