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Ambient Monitoring Technology Information Center (AMTIC)

Lead (Pb) Monitoring Network

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On November 12, 2008 EPA substantially strengthened the national ambient air quality standards (NAAQS) for lead (see 73 FR 66964 (PDF) (99pp, 665k)). EPA revised the level of the primary (health-based) standard from 1.5 micrograms per cubic meter (µg/m3) to 0.15 µg/m3, measured as total suspended particles (TSP) and revised the secondary (welfare-based) standard to be identical in all respects to the primary standard. In conjunction with strengthening the lead (Pb) NAAQS, the EPA promulgated new monitoring requirements.

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Sites and Data

The following links can be used to collect information on the number and locations of lead monitoring sites and to download monitoring data.

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Quality Assurance and Other Guidance Documents

This section contains links to EPA guidance documents intended to assist monitoring agencies as they implement the Pb monitoring requirements.

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This section contains links to guidance on methods used in the Pb NAAQS monitoring network.

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Tools and Other Resources

  • AERMod post processor - A post-processing tool is available to calculate design values from monthly AERMOD output. This tool calculates and outputs the rolling cumulative (all sources) 3-month average concentration at each modeled receptor with source group contributions and the maximum cumulative (all sources) rolling 3-month average concentration by receptor.

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