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8-Hour Ozone Status (where we are and what’s next ) December 2011

8-Hour Ozone Status (where we are and what’s next ) December 2011. Air Planning Section EPA Region 6. Ozone NAAQS Tentative Schedule. Ozone Classification Timelines. SIP Requirements for Ozone Nonattainment Areas. Designations. Multi-factor analysis Air quality data

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8-Hour Ozone Status (where we are and what’s next ) December 2011

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  1. 8-Hour Ozone Status(where we are and what’s next)December 2011 Air Planning Section EPA Region 6

  2. Ozone NAAQS Tentative Schedule

  3. Ozone Classification Timelines

  4. SIP Requirements for Ozone Nonattainment Areas

  5. Designations • Multi-factor analysis • Air quality data • Emissions data • Population density and degree of urbanization • Traffic and commuting patterns • Growth rates and patterns • Level of control of emissions sources • Geography/Topography • Meteorology • Jurisdictional boundaries

  6. Review of the Ozone NAAQS • Section 109(d) - review of NAAQS every 5 years • Planning • Final review plan published 4/2011 • Integrated Science Assessment (ISA) • 2nd External Review Draft published 9/2011 • Risk Exposure/Assessment • Policy Assessment • drafts expected mid-2012/early 2013 • Rulemaking • To view documents from current review: http://www.epa.gov/ttn/naaqs/standards/ozone/s_o3_index.html

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