Number: R40096
Title: 2006 National Ambient Air Quality Standard for Fine Particulate Matter (PM25): Designating Nonattainment Areas)
Authors: Robert Esworthy, Specialist in Environmental Policy 
Abstract: This report focuses primarily on the NAAQS implementation process for designating geographical nonattainment areas with respect to the tightening of the PM2.5 standards under the 2006 particulates NAAQS, including comparisons with the final designations under the 1997 PM2.5 NAAQS. The EPA is not requiring new nonattainment designations for PM10. Also included is a brief overview of states' subsequent obligations for developing and submitting implementation plans (SIPs) for attaining or maintaining compliance with the NAAQS. Appendix A includes a table displaying a state and county breakdown of designated nonttainment areas proposed by the states and by EPA for the 2006 PM2.5 NAAQS, as well as the final EPA designations table for the 1997 PM2.5 NAAQS.
Pages: 27
Date: December 1, 2008