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2005 Ozone Season Wrap-Up

2005 Ozone Season Wrap-Up. Air Quality Advisory Committee October 27, 2005. Ozone Data Sharing Project. Ozone season is April 1 – October 31 EWGCOG acts as clearinghouse for data provided by MoDNR and IEPA Initial quality assurance screening Record in a spreadsheet computer program.

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2005 Ozone Season Wrap-Up

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  1. 2005 Ozone Season Wrap-Up Air Quality Advisory Committee October 27, 2005

  2. Ozone Data Sharing Project • Ozone season is April 1 – October 31 • EWGCOG acts as clearinghouse for data provided by MoDNR and IEPA • Initial quality assurance screening • Record in a spreadsheet computer program

  3. 8-Hour Ozone Standard • Standard is 80 ppb (averaged over an 8 hour period) • Exceedance at a monitor is when an 8-hour average of values is calculated to be > 85 ppb on any day

  4. 2005 Ozone Season • 27 days with exceedances • June – 10 days • July – 5 days • August – 8 days • September – 4 days • 93 exceedances • All monitors

  5. 2005 Exceedances by Monitor Data still to be validated by States

  6. Violation • Violation of the standard is determined by averaging the 4th highest annual maximum average by monitor over a 3 year period (> 85 ppb) • Based on 2003-2005 data, West Alton and Orchard Farm monitors are in violation

  7. 2003—2005 4th Highest 8-Hr Ozone Averages (ppb)

  8. 2002-2005 Total Exceedances and 90o Days

  9. 2003-2005Ozone Days and 90o Days

  10. For Additional Information • On-line Air Quality Resource Center • www.ewgateway.org/environment/aq/aq.htm

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