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Why Are We Pushing for More Federal Rules to Reduce Regional NOx and SO2?

Why Are We Pushing for More Federal Rules to Reduce Regional NOx and SO2?. NACAA Meeting May 17, 2010. Every bad ozone day, in the morning hours, a large reservoir of ozone sits above Maryland and the Mid-Atlantic area waiting to mix down.

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Why Are We Pushing for More Federal Rules to Reduce Regional NOx and SO2?

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  1. Why Are We Pushing for More Federal Rules to Reduce Regional NOx and SO2? NACAA Meeting May 17, 2010

  2. Every bad ozone day, in the morning hours, a large reservoir of ozone sits above Maryland and the Mid-Atlantic area waiting to mix down. Ozone levels in the reservoir can routinely reach 60 to 100 ppb. In the morning, ozone levels at the surface are very low. Around 10:00 or 11:00, the ozone in the reservoir mixes down to the surface and degrades air quality. How Does Transport Really Work? The Transport Cloud ... or the Elevated Ozone Reservoir

  3. Transport Cloud – Crashing Down to Earth

  4. The NOx SIP Call as an example OTAG collaboration in late 90’s EPA finalizes SIP Call in 1998 Very significant regional NOx reductions across the East in the 2003/2004 timeframe Lead to dramatic drops in ozone levels Similar story for SO2 controls and PM How Do We Reduce the Transport Cloud?

  5. 22.3%of Units 55.5%of Units Scheduled Startup Units Phase I Phase II Large Number of SCR Units InstalledExpect SIGNIFIANT NOx ReductionsEspecially after 2003-2004Air Qualityshould decrease dramatically Minimal SCR UnitsExpect Minimal NOx Reductions Controls From the NOx SIP Call 77.8% of Units Installed between 2003-2007 Data courtesy of The Institute of Clean Air Companies (ICAC).

  6. Regional NOx Emission Reductions • Dramatic regional NOx emission reductions in the 2003/2004 time frame • NOx reductions from Tier II/LEV II standards also – very gradually - occurring in this same period NOx Reductions at NOx Budget Program Sources Source: EPA Clean Air Markets

  7. Reducing O3 in the Transport Cloud

  8. 1-Hour Ozone 8-Hour Ozone Daily Fine Particulate Annual Fine Particulate Progress in Cleaning Maryland’s Air *2008 data are preliminary.

  9. Other Benefits • EPA has estimated the improvements in public health resulting from the 2004 NOx SIP Call controls • Up to 1800 lives saved through 2008 • Significant health benefits to asthmatics and other individuals with lung disease • Multiple other benefits • Haze, Chesapeake Bay, O3, PM, NO2, toxics, etc.

  10. So … • Let’s work together to do whatever we can to further reduce regional NOx and SO2 emissions • Our Priorities • EGUs • Tougher On-Road Tailpipe Standards (NOx and VOC) • ICI Boilers • Cement Kilns • Marine Engines • Locomotives • Our larger list • Good national controls could save thousands of lives

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