Regulatory Actions

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This page contains a chronological listing of regulatory actions and correspondence related to the 2006 PM_2.5 standard.

EPA Seeks Public Comment on its Proposed Modifications to the State and Tribal Recommendations for PM_2.5 Designations

Recommendations for Areas to be Designated “Nonattainment” for the 2006 24-hour Fine Particle National Air Quality Standards

EPA Seeks Public Comment on its Proposed Modifications to the State and Tribal Recommendations for PM_2.5 Designations

August 21, 2008 - EPA has announced it will accept public comment on the Agency’s responses to the state and tribal recommendations regarding designations for the 24-hour fine particle standards. In addition to comments, EPA seeks supplemental information that may help establish the final nonattainment area boundaries. The Agency will accept comments for 30 days after the notice of availability is published in Federal Register.

Federal Register Notice
How to Comment

Recommendations for Areas to be Designated “Nonattainment” for the 2006 24-hour Fine Particle National Air Quality Standards

August 19, 2008 – In response to recommendations from state and local tribal representatives, EPA has sent letters outlining the areas it is considering designating as “attainment” or “nonattainment” for the 24-hour fine particle standards.

Read Correspondence Between EPA and State and Tribal Representatives
Fact Sheet
Factors Considered as the Basis for Nonattainment Area Boundaries
Map of EPA responses to 24-hour PM_2.5 recommendations
Table showing comparison of State/Tribal recommendations and EPA responses
Timeline for Implementing the 24-hour PM_2.5 Standard

Regulatory Actions

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