Which level indicates the action required for lead levels in soil designated as hazardous?

The level that indicates the action required for lead levels in soil designated as hazardous is 5000 ppm. This threshold is established to ensure public health and safety by identifying when lead contamination in the soil reaches a level that poses significant risks. At or above this concentration, specific measures must be taken to mitigate exposure and protect the environment and human health, particularly from lead's harmful effects, which can include developmental delays in children and other serious health issues in adults.

In environmental assessments, a level of 5000 ppm serves as a clear guideline for remediation and risk management strategies. When lead levels in soil reach this concentration, it triggers necessary actions such as further testing, informing the public, and engaging in cleanup efforts to reduce the risks associated with exposure. Understanding these benchmarks is crucial in the assessment and management of lead contamination risks.