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Area Designations for 2006 24-Hour Fine Particle (PM2.5) Standards

Technical Support Documents

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Here you can find links to various technical resources related to the PM2.5 designations process.

Supplemental Technical Support Document, October 8, 2009

Technical Support Document, December 22, 2008

Exceptional Event Claim Concurrences that Resulted in Attainment for An Area for the 2006 24-Hour PM2.5 NAAQS, October 8, 2009

Responses to State and Tribal Comments on PM2.5 Designations

Responses to Public Comments on PM2.5 Designations

Exceptional Event Claim concurrences that Resulted in Attainment for An Area for the 2006 24-hour PM2.5 NAAQS, October 8, 2009





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