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R4 Ozone NAAQS & SIP Update Jane Spann EPA Region 4
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  1. R4 Ozone NAAQS & SIP UpdateJane SpannEPA Region 4 2009 Region 4 Modelers Workshop March 18-19, 2009

  2. 2009 Region 4 Modelers Workshop March 18-19, 2009 1997 Ozone NAAQS Status 2009, 2010, 2011 SIP Expectations 2008 Ozone NAAQS Status State Designation Recommendations Designations R4 Ozone NAAQS & SIP Update

  3. 6 remaining R4 ozone nonattainment areas Memphis and GSMNP attaining – redesignation request submitted Atlanta - Moderate SIP due Charlotte - Withdrew Moderate SIP - EPA Finding of Failure to Submit – May be reclassified to serious Knoxville and Cincinatti – will be reclassified to Subpart 2 due to Court decision for Phase 1 Vacature EAC areas attained 1997 Ozone NAAQS Status 2009 Region 4 Modelers Workshop March 18-19, 2009

  4. Charlotte Moderate SIP Submitted in 2007 Approvable with WOE No longer approvable with 2008 Data EPA prepared to disapprove NC & SC withdrew SIP EPA signed Findings of Failure to submit January 2009/not yet published May Submit Serious SIP during/end 2009 Ozone Season Atlanta Moderate SIP Due December 31, 2008 Moderate SIP expected from GA soon 2009 SIP Expectations PLAN 2009 Region 4 Modelers Workshop March 18-19, 2009

  5. Ozone Phase 1 Implementation Rule Proposed Revision January 16, 2009 - EPA proposed Subpart 1 areas Be Reclassified to Subpart 2 February 12, 2009 – Extended Public Comment period – Now Ends April 1, 2009 If Final Decision To Reclassify to Subpart 2 Knoxville and Cincinnati would become Subpart 2 Haywood and Swain Cos (GSMNP) will likely be redesignated to attainment/if not Subpart 2 2009 SIP Expectations PLAN 2009 Region 4 Modelers Workshop March 18-19, 2009

  6. Cincinnati OH-IN-KY Met Subpart 1 requirements Likely Reclassified to Subpart 2 Moderate SIPs would be due 1 yr after Effective Date of Final Phase 1 Rule Revision Knoxville, TN Attained and submitted redesignation request Violated the NAAQS before redesignation Likely Reclassified to Subpart 2 Moderate SIPs would be due 1 yr after Effective Date of Final Phase 1 Rule Revision Haywood and Swain Cos (GSMNP), NC Attaining - Redesignation Request submitted If they are not redesignated AND If EPA Final Decision to Reclassify to Subpart 2 Likely Reclassified to Subpart 2 Marginal Could be reclassified to Subpart 2 Moderate Subpart 2 SIP would be due 1 yr after Effective Date of Final Phase 1 Rule Revision 2009 SIP Expectations PLAN 2009 Region 4 Modelers Workshop March 18-19, 2009

  7. Subpart 1 2009 SIP Expectations PLAN • Subpart 2 Marginal • New Attainment Date (Past so automatically reclassified to Moderate) • Subpart 1 • Subpart 2 Moderate • New Attainment Date (6/15/10) • RFP SIP Required • RACT SIP Required 2009 Region 4 Modelers Workshop March 18-19, 2009

  8. CTG SIPs due Group II – Due October 2007 Group III – Due October 2008 Group IV – Due September 2009 110(a)(1) Maintenance Plans Due 2011 Triad Area, NC Nashville, TN 2009, 2010, 2011 SIP Expectations PLAN 2009 Region 4 Modelers Workshop March 18-19, 2009

  9. 2008 Ozone NAAQS Status • March 12, 2008 (published March 27, 2008) • 2 things changed • Air Quality Index (AQI) changed • Primary & secondary standard • Changed from 0.08 ppm to 0.075 ppm (3rd decimal place, no rounding) • Long-range Next Steps • Designations (may include 06-08 or 07-09 data) • Development of Attainment Plans (Due 3 years after designation) 2009 Region 4 Modelers Workshop March 18-19, 2009

  10. Timeline for Designations Process Milestones 2008 Ozone NAAQS Dates Final decision on level of NAAQS changed to 0.075 State/Tribal recommendations due EPA response State & Tribes may provide additional comments March 12, 2008 March 12, 2009 No later than November 12, 2009 (120 days prior to final designations) Prior to final designations No later than March 12, 2010* Final designations * If the EPA Administrator determines that there is insufficient information to make final designations, then the date of final designations may be extended by up to one year but no later than March 12, 2011.

  11. State Designation Recommendations • State Recommendations were due March 12, 2009

  12. Designation Process (cont.) Factors considered for nonattainment boundaries: • Air quality data • Emissions data (location of sources and contribution to ozone concentrations) • Population density and degree of urbanization (including commercial development) • Traffic and commuting patterns • Growth rate and patterns • Meteorology (weather/transport patterns) • Geography/topography (mountain ranges or other air basin boundaries) • Jurisdictional boundaries (e.g., counties, air districts, existing nonattainment areas, Reservations, metropolitan planning organizations (MPOs)) • Level of control of emission sources 2009 Region 4 Modelers Workshop March 18-19, 2009

  13. Implementation of 2008 8-Hour Ozone NAAQS • Designation Guidance Memo – Published Dec 2008 • Implementation Rule • Draft under internal EPA review • Proposed Rule publication planned within next 6 months • 60 day public comment period • Final Rule will include EPA’s response to comments 2009 Region 4 Modelers Workshop March 18-19, 2009

  14. After Designations • Nonattainment NSR applies upon effective date of designations (2010) • Transportation conformity applies 1 year from effective date of designations (2011) • Attainment SIPs due 2013 • Additional mandated controls • Must attain by attainment date or bumped up to next higher classification (Attainment Dates 2013-2030 2009 Region 4 Modelers Workshop March 18-19, 2009

  15. Ozone Control Requirements (NOx and VOC) Based on the 1997 Standard 8-hr Ozone Subpart 2 Areas

  16. Jane Spann – US EPARegion 4 Groundlevel Ozone Expert(404) 562-9029spann.jane@epa.gov Questions???