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Fine Particulate Matter SIP for Washington DC

Fine Particulate Matter SIP for Washington DC. Special Stakeholder Meeting February 20, 2008. Discussion Topics. Background Air Quality Trends SIP Content Modeling Results Local Emissions Trends Conclusions. PM 2.5 SIP Background. Standards - 15 µg/m 3 (annual) & 65 µg/m 3 (daily)

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Fine Particulate Matter SIP for Washington DC

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  1. Fine Particulate Matter SIP for Washington DC Special Stakeholder Meeting February 20, 2008

  2. Discussion Topics • Background • Air Quality Trends • SIP Content • Modeling Results • Local Emissions Trends • Conclusions

  3. PM2.5 SIP Background • Standards - 15 µg/m3(annual)& 65 µg/m3 (daily) • DC area designated nonattainment in 2004 • All NOVA monitors in compliance • Influence on DC cited for inclusion • Monitored air quality continues to improve • SIP process began - Spring 2007 • Draft SIP completed – Dec 2007 • Public review/comment – Jan 2008

  4. Air Quality – Annual Standard 13.9

  5. Air Quality – New Daily Standard 34

  6. SIP Content & Results • Combination emission reduction measures • Local point, mobile, & nonroad reductions • Significant regional reductions of SO2 & NOX • Attainment demonstrated by 2009 using regional modeling • Results consist with other modeling efforts • All other SIP requirements met • RACM analysis • Conformity budgets • Contingency measures

  7. Nonattainment Attainment Baseline Attainment StatusAnnual Standard

  8. Nonattainment Attainment Current & Future StatusAnnual Standard

  9. Nonattainment Attainment Current Attainment Status2006 Daily Standard

  10. Nonattainment Attainment Future Predicted Status2006 Daily Standard

  11. Mirant PRGS Emission Trends

  12. Local Emissions Reductions NOVA Point Sources SO2: - 32,935 TPY NOX: - 8,749 TPY

  13. Conclusions • DC area has a more than adequate monitoring network • Entire area currently monitoring attainment with annual standard • No EPA defined “hotspots” exist • Model predicted attainment of all standards by 2009 • Complete & fully approvable SIP

  14. Local Area Analysis (LAA) • Perceived local “hotspot” at PRGS • Onsite monitoring underway • No monitored evidence of hotspot exists • LAA not required by EPA guidance • Comprehensive permit for PRGS in process • Bottom line – permit the appropriate mechanism to resolve any local issues

  15. Mirant PRGS Monitoring • PM2.5 FRM • PM2.5 Continuous • PM2.5 EBAM • Two SO2 Monitors • Results to date consistent with attainment (2007) • Annual: 13.5 • Daily: 32

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