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
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