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PM2.5 Redesignation Request for the Metropolitan Washington,D.C. Region

PM2.5 Redesignation Request for the Metropolitan Washington,D.C. Region. Joan Rohlfs Chief, Air Quality Planning Metropolitan Washington COG. Overview. Background: PM2.5 Annual Standard Redesignation: Steps Maintenance Plan Requirements Transportation Conformity Requirements

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PM2.5 Redesignation Request for the Metropolitan Washington,D.C. Region

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  1. PM2.5 Redesignation Request for the Metropolitan Washington,D.C. Region Joan Rohlfs Chief, Air Quality Planning Metropolitan Washington COG

  2. Overview • Background: PM2.5 Annual Standard • Redesignation: Steps • Maintenance Plan Requirements • Transportation Conformity Requirements • New 24-hour PM Standard

  3. Metropolitan Washington DC-MD-VA Region Fine Particle Nonattainment Area Annual Standard= 15 µg/m3 Virginia (Fairfax, Arlington, Loudoun, Prince William Counties, City of Alexandria District of Columbia Suburban Maryland (Montgomery, Prince George’s, Frederick, Charles Counties) EPA designated the entire 8-hour ozone nonattainment area for PM, but excluded Calvert County.

  4. Annual PM Planning Horizon Jul 1997 Nov 2004 Apr 2008 Apr 2010 April 2005 PM 2.5 Standard First Promulgated Final Nonattainment Designations Effective Attainment Deadline SIP due to EPA Final Nonattainment Designations Issued

  5. Redesignation in 4 Easy Steps

  6. STEP 1 • Two Design Values with Clean Data: Air Quality data shows attainment of Annual PM2.5 standard for 2003-2005 and 2004-2006

  7. Annual PM2.5 Standard: 15 ug/m3 * 2004-06 data is draft

  8. STEP #2 2007 #2 Prepare Redesignation Request and Maintenance Plan

  9. STEP #3 • SUBMIT Redesignation Request and Maintenance Plan to EPA by APRIL 15, 2008 • If late, region is subject to penalties for failure to submit 2008

  10. STEP #4 • EPA approves Redesignation Request • Process may take up to 18 months after submittal • earliest date: December 2008 • Latest date: 2010 2010

  11. WHAT IS A MAINTENANCE PLAN?

  12. Purpose of Maintenance Plan • To demonstrate that the region will maintain the annual PM2.5 standard for 10 years after redesignation

  13. Components • Attainment Inventory • Maintenance Demonstration (inventory) • Monitoring Network • Verification of continued attainment • Contingency Plan

  14. SIP Requirements Maintenance Plan • Emission Inventories • Rate of Progress • Conformity/Mobile Budget • RACM Analysis • Contingency Measures • Attainment Demonstration NO No Photochemical Modeling required

  15. PM 2.5 Conformity • Must demonstrate PM 2.5 conformityfor PM Direct and Precursor NOx. • Calculate emissions using MOBILE 6.2 • Plan will establish mobile emissions budgets for direct PM and PM precursors determined to be significant contributors to PM pollution. • Maintenance Plan will establish mobile budgets for interim year and last year of maintenance plan. October 2007

  16. Emission Inventory • Annual for PM Direct and all PM Precursors (NOx, SO2, Ammonia, VOCs). • Rate of Progress Demonstrations • Not required if attain within 5 years. • Attainment Demonstration and Weight of Evidence • RACM Analysis • Identifies Reasonably Available Control Measures for SIP • Explains why other measures are not reasonably available • Conformity/Mobile Budget • Establish budget for PM and PM Precursors determined to contribute significantly. • Contingency Measures • Measures to be implemented if region fails to attain by 2010 or does not demonstrate required progress • New formula for reduction requirement [(2009-2002)/7] Maintenance Plan Components

  17. Emission Inventory • Annual for PM Direct and all PM Precursors (NOx, SO2, Ammonia, VOCs). • Attainment Year: 2005 • Interim Year (2010 or 2012?) • 10 Year Horizon after Redesignation (2020) Maintenance Plan Components

  18. Rate of Progress Demonstrations • Must track progress of maintenance plan for an interim year (2010 or 2012) • No established rate of reduction requirement Maintenance Plan Components

  19. Conformity/Mobile Budget • Establish budget for PM and PM Precursors determined to contribute significantly. • Establishes budgets for interim and outyear Maintenance Plan Components

  20. RACM Analysis • Not Required Maintenance PlanComponents

  21. Contingency Measures • Measures to be implemented if region fails to attain by 2020 • Region sets trigger for contingency measures Maintenance Plan Components

  22. Maintenance Demonstration • Attainment Inventory approach • Photochemical Modeling for supporting evidence (2012, 2018) • Control strategy reductions come from permanent, enforceable measures Maintenance Plan Components

  23. Annual PM2.5 Maintenance Plan Schedule

  24. 24-hour PM 2.5 Standard 2009

  25. 24-Hour PM2.5 Standard - 35 µg/m3

  26. 24-Hour PM Planning Horizon Sep 2006 Nov 2009 Nov 2007 Apr 2013 Apr 2010 Apr 2015 PM 2.5 Standard Lowered EPA Designations SIPs due to EPA Attainment Deadline State Recommendations for Designations Designations Effective

  27. For More Information mwcog.org/environment mwcog.org/transportation epa.gov airnow.gov http://www.epa.gov/otaq/transp/conform/conf-regs.htm EPA Redesignation Guidance: Calcagni Memo,”Procedures for Processing Requests to Redesignate to Attainment,” USEPA, Sept.9, 1992.

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