Exceptional Events: Lessons Learned. Eric C. Massey, Director Air Quality Division Arizona Department of Environmental Quality. Phoenix, AZ July 5, 2011. Credit: Daniel Bryant. July 2-8, 2012. Exceptional Events Timeline. Phoenix Area = NAA since 1990 amendments 5% Plan submitted in 2007
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Eric C. Massey, Director
Air Quality Division
Arizona Department of Environmental Quality
Phoenix, AZ July 5, 2011
Credit: Daniel Bryant
Credit: Mike Maxham