CDPH Lead Inspector/Assessor California State Practice Exam

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What is the purpose of taking a composite soil sample during perimeter soil sampling?

To maximize the number of readings
To test for biohazards
To gather a representative sample of the soil
To analyze for moisture content

The correct answer is: To gather a representative sample of the soil

Taking a composite soil sample during perimeter soil sampling serves the crucial purpose of gathering a representative sample of the soil. This approach involves collecting multiple smaller subsamples from various locations around the perimeter of the area being assessed and then combining them into a single sample. This method helps to average out the variability within the soil, providing a more accurate picture of the lead and other contaminants present in that area. This representative sample helps ensure that the testing results reflect the overall condition of the soil rather than the specific conditions of just one spot, which may not be indicative of the entire perimeter. It significantly improves the reliability of the assessment, leading to better-informed decisions regarding potential contamination and remediation strategies.