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Lead Air Pollution

National Ambient Air Quality Standards (NAAQS) for Lead (Pb)

Rule Summary

On September 16, 2016, based on its review of the air quality criteria for lead (Pb), the Environmental Protection Agency issued a decision to retain the existing 2008 standards without revision. The primary and secondary Pb standards are 0.15 micrograms per cubic meter Pb in total suspended particles as a 3-month average.

Rule History

10/18/2016 - Final Decision to Retain the National Ambient Air Quality Standards (NAAQS) for Lead (Pb)

01/05/2015 - Proposal to Retain the Current NAAQS for Pb

11/12/2008 - Final Rule Establishing Current Lead (Pb) National Ambient Air Quality Standards (NAAQS)

05/20/2008 - Proposed Rule to Establish Lead (Pb) National Ambient Air Quality Standards (NAAQS)

Additional Resources

National Ambient Air Quality Standards (NAAQS) for Lead (Pb) Fact Sheets and Additional Information

2010 Lead (Pb) Air Monitoring Requirements & 2013 Method for Determination of Lead (Pb) in Total Suspended Particulate Matter Fact Sheets

Scientific and Technical Documents Supporting the NAAQS for Lead

Compliance

Lead (Pb) National Ambient Air Quality Standards (NAAQS) Implementation Guidance Documents

Related Rules

07/03/2013 – Final Method for the Determination of Lead (Pb) in Total Suspended Particulate Matter

02/05/2013 – Proposed Method for the Determination of Lead (Pb) in Total Suspended Particulate Matter

12/27/2010 – Final Revisions to Lead (Pb) Ambient Air Monitoring Requirements

12/30/2009 – Proposed Revisions to Lead (Pb) Ambient Air Monitoring Requirements

2008 Lead (Pb) National Ambient Air Quality Standards (NAAQS) Implementation Actions

1978 Final Rule: National Primary and Secondary Ambient Air Quality Standards (NAAQS) for Lead (Pb) and Implementation Plans for Lead NAAQS