OVERVIEW of SIP for Annual PM2.5 Standard MWAQC December 12, 2007
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1 OVERVIEW of SIP for Annual PM2.5 Standard MWAQC December 12, 2007
2 Outline Fine Particle Pollution, Definition & SIP Requirements Attainment Demonstration Inventories Control Measures Mobile Vehicle Emissions Budgets Contingency Plan Public Hearing Process
3 Air Pollution: Fine Particles Chemical, particulate matter or aerosol that modifies the natural characteristics of the atmosphere Created locally by emissions from coal combustion, cars & trucks, road construction Causes respiratory problems Impairs visibility
4 Formation of Ground Level Ozone
5 Formation of Fine Particles
6 Sources of Particle Pollution Source: EPA
7 PM2.5 Planning Schedule: Annual Jul Jul Dec Dec Jan-Feb Jan-Feb Apr Apr PM 2.5 Standard First Promulgated Designated NAA for 1997 Annual standard Public Hearings on Annual PM2.5 Plan Attainment Deadline 2006 Daily PM2.5 Designations Made Annual PM2.5 DRAFT Plan approved Plan due to EPA
8 PM2.5 SIP Requirements Comparison to 8-hr 8 Ozone SIP 2002 Base Year, 2009 Attainment Year 5 precursors: VOC, NH3, SO2, NOx, PM2.5- Direct NO RFP in 2008 Attainment Modeling RACM, RACT Contingency Measures
9 Attainment Modeling Results Stat e DVB AIRS ID Site Name Jurisdiction Q1 Q2 Q3 Q4 #Q DVF District of River Terrace Columbia District of Park Services Columbia District of McMillan Columbia Rockville Montgomery MD Bladensburg Prince George's MD Greenbelt Prince George's MD Beltsville Prince George's MD NA NA Suitland Prince George's MD PG Equestrian Center Prince George's MD Aurora Hills Arlington VA Franconia Fairfax VA Annandale Fairfax VA Lewinsville Fairfax VA Ashburn Loudoun VA Annual PM2.5 standard= 15 ug/m3
10 PM2.5 and Observed Data PM 2.5 Annual Daily EPA ug/m3 65 ug/m3 Science Advisors ug/m3 35 ug/m3 EPA ug/m3 35 ug/m3 Observed Data ug/m3 37 ug/m ug/m3 36 ug/m3
11 Annual PM2.5 Standard: 15 ug/m Annual PM2.5 Design Value (Washington Region) 17.1 Design Value (µg/m3) Annual PM2.5 Standard - 15 µg/m Year
12 PM2.5 Inventories
13 Significant PM2.5 Precursors PM 2.5 Direct NO x SO 2 VOC NH 3 PM 10 EPA SIP Requirements for PM Pollutants Base Year Emission Inventory Attainment Year Emission Inventory - - Not required Significance Determinations for SIP Controls and Motor Vehicle Emission Budgets Significance Precursors for SIP Controls Significance Precursors for Motor Vehicle Emission Budgets for Conformity - = Not required unless precursor deemed significant by states or EPA. No No* No* No* No* * = Due to lack of conclusive information at this time, given the state of science and research on PM 2.5 precursors, the Washington, DC region decided to follow EPA s advice on VOC and NH 3 for the current Annual PM 2.5 NAAQS SIP and reevaluate their significance in future PM 2.5 SIPs and revisions.
14 PM2.5 Precursor Inventories PM2.5-Direct Emissions by Source (2002 Vs. 2009) Washington, DC Nonattainment Area Emissions (tpy) , , , , , , , , Point Area Non-road On-road Total 25, ,
15 PM2.5 Precursor Inventories PM2.5 Precursor Inventories NOx Emissions by Source (2002 Vs. 2009) Washington, DC Nonattainment Area SO2 Emissions by Source (2002 Vs. 2009) Washington, DC Nonattainment Area 12, , , , , , , , , Point Area Non-road On-road Total Point Area Non-road On-road Total Emissions (tpy) 61, , , , , , , , , , Emissions (tpy)
16 Control Measures
17 Plan to Reduce Fine Particles Point Source NOX SIP Call Clean Air Interstate Rule (CAIR) - VA & DC Maryland Healthy Air Act - MD Utility Reductions (Possum Point Fuel Conversion) -VA Area Source National Locomotives Rule Nonroad Source 2004 Nonroad Heavy Duty Diesel Rule Onroad Source Heavy-Duty Diesel Engine Rule Tier 2 Motor Vehicle Emission Standards Vehicle Inspection Program
18 Plan to Reduce Fine Particles Supplemental Measures: Telecommuting Initiative Tree Canopy Programs Wind Energy Purchases Energy Efficiency in buildings LED Traffic Signal Retrofits Renewable Portfolio Standards
19 Contingency Plan
20 Planning Requirements SIP must contain post-2010 measures Approx. 10,000 tpy NOx target Will meet using both NOx and SO 2 Measures Tier 2 Motor Vehicle Standards CAIR/HAA
21 Mobile Vehicle Emissions Budgets Ozone SIP: 2008, 2009, 2010 PM2.5 SIP: 2009, 2010
22 NEXT STEPS Dec. 12: MWAQC vote to approve SIP for public comment Dec. 21: Start of 30-day public comment period January 28: Public hearings held. February 12: TAC reviews comments and responses to comments March 6: MWAQC votes to approve
23 Draft PM2.5 SIP %20Documents/Forms/AllItems.aspx
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