1 PM2.5 Redesignation PM2.5 Redesignation Request for the Request for the Metropolitan Metropolitan Washington,D.C. Washington,D.C. Region Region Joan Rohlfs Joan Rohlfs Chief, Air Quality Planning Chief, Air Quality Planning Metropolitan Washington COG Metropolitan Washington COG
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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 - PowerPoint PPT Presentation
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PM2.5 Redesignation PM2.5 Redesignation Request for the Request for the
Metropolitan Metropolitan Washington,D.C. RegionWashington,D.C. Region
Joan RohlfsJoan RohlfsChief, Air Quality PlanningChief, Air Quality Planning
Metropolitan Washington COGMetropolitan Washington COG
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OverviewOverview
Background: PM2.5 Annual StandardBackground: PM2.5 Annual Standard Redesignation: StepsRedesignation: Steps Maintenance Plan Requirements Maintenance Plan Requirements Transportation Conformity RequirementsTransportation Conformity Requirements New 24-hour PM StandardNew 24-hour PM Standard
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Metropolitan Washington DC-MD-VA Region Fine Particle Nonattainment Area
Annual Standard= 15 µg/m315 µg/m3
District of Columbia
Suburban Maryland (Montgomery, Prince George’s, Frederick, Charles Counties)
Virginia (Fairfax, Arlington, Loudoun, Prince William Counties, City of Alexandria
EPA designated the entire 8-hour ozone nonattainment area EPA designated the entire 8-hour ozone nonattainment area for PM, but excluded Calvert County.for PM, but excluded Calvert County.
EPA designated the entire 8-hour ozone nonattainment area EPA designated the entire 8-hour ozone nonattainment area for PM, but excluded Calvert County.for PM, but excluded Calvert County.
Two Design Values with Clean Data: Air Two Design Values with Clean Data: Air Quality data shows attainment of Annual Quality data shows attainment of Annual PM2.5 standard for 2003-2005 and 2004-PM2.5 standard for 2003-2005 and 2004-20062006
#2 #2 Prepare Redesignation Request Prepare Redesignation Request and Maintenance Plan and Maintenance Plan
2007
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STEP #3STEP #3
SUBMIT Redesignation Request and SUBMIT Redesignation Request and Maintenance Plan to EPA by APRIL 15, Maintenance Plan to EPA by APRIL 15, 20082008
If late, region is subject to penalties for If late, region is subject to penalties for failure to submitfailure to submit
2008
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STEP #4STEP #4
EPA approves Redesignation EPA approves Redesignation RequestRequest Process may take up to 18 months after Process may take up to 18 months after
submittal submittal • earliest date: December 2008earliest date: December 2008• Latest date: 2010Latest date: 2010
2010
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WHAT IS A MAINTENANCE PLAN?
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Purpose of Maintenance PlanPurpose of Maintenance Plan
To demonstrate that the region will To demonstrate that the region will maintain the annual PM2.5 standard for 10 maintain the annual PM2.5 standard for 10 years after redesignationyears after redesignation
Maintenance Plan ComponentsMaintenance Plan Components
Contingency Measures• Measures to be implemented if
region fails to attain by 2020• Region sets trigger for contingency
measures
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Maintenance Plan ComponentsMaintenance Plan Components
Maintenance Demonstration• Attainment Inventory approach• Photochemical Modeling for supporting
evidence (2012, 2018)• Control strategy reductions come from
permanent, enforceable measures
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and Transportation Conformity DeterminationsSpring Summer Fall 2007 Winter 2007 Spring 2008
2007
Inventory DevelopmentDetermine Base Year, OutyearsBase Year Inventory: 2005
P
Control MeasuresMaster list of control measuresPriority measures for PlanContingency Measures
Modeling Analysis/Weight of EvidencePrecursor Significance Determination?
Review Regional Haze Modeling Results for 2018Weight of Evidence
Conformity
Complete conformity 2007 CLRP FY2008-2013 TIP Develop PM2.5 mobile budgets (SIP)
Draft Redesignation /Maintenance Plan Document Public Meetings on control strategy
Prepare Draft Attainment Maintenance Plan Adopt Draft Maintenance Plan (MWAQC) Public Hearings Approve Maintenance Plan for PM2.5 Transmit Plan to IAQC States Submit Plan to EPA