2006 Particulate Matter (PM) National Ambient Air Quality Standards (NAAQS) Actions
EPA Makes Findings of Failure to Submit Infrastructure State Implementation Plans (SIPs) - 2006 PM2.5 Standard
September 8, 2011 - EPA issued findings that 6 states, Washington DC and Puerto Rico missed Clean Air Act deadlines for submitting plans, or elements of plans, for implementing EPA's national air quality standards for the 2006 PM2.5.
EPA Makes Findings of Failure to Submit State Implementation Plans (SIPs) - 2006 PM2.5 Standard
June 9, 2010 - EPA issued findings that 29 states missed Clean Air Act deadlines for submitting plans, or elements of plans, for implementing EPA's national air quality standards for the 2006 PM2.5.