Release of Volume 3 of the Integrated Review Plan in the Review of the Lead National Ambient Air Quality Standards

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On or about May 12, 2023, the Environmental Protection Agency (EPA) is making available to the public, 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 exposure and risk analyses.