Illinois Lead Risk Assessor Practice Exam 2025 – Complete Test Preparation

Question: 1 / 400

What is the maximum concentration of lead in material before it must be disposed of as hazardous waste according to the USEPA?

2 ppm

5 ppm

The maximum concentration of lead in material that triggers classification as hazardous waste according to the USEPA is indeed 5 parts per million (ppm). This threshold is established under the Resource Conservation and Recovery Act (RCRA) regulations, which set standards for hazardous waste management, including the classification of lead. When the concentration of lead in waste exceeds this limit, it can pose a significant risk to human health and the environment, prompting the requirement for proper hazardous waste disposal measures.

It's important to note that different materials and contexts may have varying standards or thresholds for lead content, but the 5 ppm guideline is specifically the threshold used by the USEPA for regulatory purposes regarding hazardous waste. Understanding these thresholds is critical for compliance and ensuring safe practices in handling lead-contaminated materials.

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10 ppm

15 ppm

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