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EPA’s Revised National Ambient Air Quality Particulate Matter Standards. November 2006. Revised Particulate Standards. January 2006: Revised particulate matter (PM) standards proposed September 21, 2006: Final rule December 2006: Standards take effect. Implementation Schedule.
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EPA’s Revised National Ambient Air Quality Particulate Matter Standards November 2006
Revised Particulate Standards • January 2006: Revised particulate matter (PM) standards proposed • September 21, 2006: Final rule • December 2006: Standards take effect
Implementation Schedule • December 2007: State recommendations to EPA (based on 2004-2006 data) • December 2009: EPA makes final designations • April 2013: SIPs due • April 2015: Attainment date
National Ambient Air Quality Standards Missoula Air Stagnation Zone (black border) PM10 Nonattainment Area (orange) Missoula Air Stagnation Zone (black border) PM10 Nonattainment Area (orange) Missoula Air Stagnation Zone (black border) PM10 Nonattainment Area (orange)
National Ambient Air Quality Standards Missoula Air Stagnation Zone (black border) PM10 Nonattainment Area (orange) Missoula Air Stagnation Zone (black border) PM10 Nonattainment Area (orange) Missoula Air Stagnation Zone (black border) PM10 Nonattainment Area (orange)
National Ambient Air Quality Standards Missoula Air Stagnation Zone (black border) PM10 Nonattainment Area (orange) Missoula Air Stagnation Zone (black border) PM10 Nonattainment Area (orange) Missoula Air Stagnation Zone (black border) PM10 Nonattainment Area (orange)
National Ambient Air Quality Standards Missoula Air Stagnation Zone (black border) PM10 Nonattainment Area (orange) Missoula Air Stagnation Zone (black border) PM10 Nonattainment Area (orange) Missoula Air Stagnation Zone (black border) PM10 Nonattainment Area (orange)
Next Steps • Chemical Mass Balance study this winter to determine sources • Begin researching potential control strategies • Continue tracking implementation process
For More Information Health Department • http://www.co.missoula.mt.us/EnvHealth/AirQ/aqindex.html • Jan Scher Lainsbury, Ben Schmidt, or Erik Englebert: 258-4755 EPA • www.epa.gov/air/particles