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  2. Reviewing National Ambient Air Quality Standards (NAAQS)

Lead (Pb) Standards - Policy Assessments from Review Completed in 2016

The policy assessment (PA) presents a staff analysis of the scientific basis for policy options for consideration by senior EPA management prior to rulemaking. Such an evaluation of policy implications is intended to help ‘‘bridge the gap’’ between the Agency’s scientific assessments, presented in the integrated science assessment (ISA) and risk/exposure assessment (REA), and the judgments required of the EPA Administrator in determining whether it is appropriate to retain or revise the NAAQS.

  • Policy Assessment for the Review of the Lead NAAQS, Final Report (pdf) (3.1 MB)
  • Policy Assessment for the Review of the Lead NAAQS, External Review Draft (pdf) (3.73 MB)

You may also be interested in other documents from the lead NAAQS review completed in 2016.

Reviewing National Ambient Air Quality Standards (NAAQS)

  • Carbon Monoxide Standards
  • Lead Standards
  • Nitrogen Dioxide Primary Standards
  • Nitrogen Dioxide Secondary Standards
  • Ozone Standards
  • Particulate Matter Standards
  • Sulfur Dioxide Primary Standards
  • Sulfur Dioxide Secondary Standards
Contact Us about Reviewing National Ambient Air Quality Standards (NAAQS)
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Last updated on May 13, 2025
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