What is the Lead in Soil Risk Assessment criteria for high contact/play areas?

The criterion for Lead in Soil Risk Assessment specifically for high contact or play areas is established at 400 mg/kg. This level is based on research and guidelines from environmental health agencies that recognize these areas are frequented by children who are more vulnerable to lead exposure through hand-to-mouth activities, especially in outdoor settings.

The 400 mg/kg threshold considers not only the potential for ingestion of lead-contaminated soil but also the risk of soil particles being inhaled or ingested through incidental contact. This standard is particularly crucial as lead exposure can have severe health consequences, particularly in young children, including developmental issues and cognitive impairments.

Understanding the specific criterion of 400 mg/kg allows risk assessors to determine necessary actions for remediation or community education to lessen lead exposure risks in these high contact scenarios. This reflects an informed approach to public health and safety concerning lead exposure in environments where children are most active.