Release of Planning Update in the Review of the Lead National Ambient Air Quality Standards

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On or about November 8, 2024, the Environmental Protection Agency (EPA) is making available to the public an update on two aspects of the approach for the quantitative human exposure and health risk analyses, Update on Two Aspects of the Analytical Approach (Update). This Update provides additional detail regarding aspects of the analysis plans described in Volume 3 of the Integrated Review Plan for the Lead National Ambient Air Quality Standards (IRP). The national ambient air quality standards (NAAQS) for lead (Pb) are set to protect the public health and the public welfare from Pb in ambient air. Volume 3 of the IRP is the planning document for quantitative analyses to be considered in the policy assessment (PA), including human exposure and health risk analyses.