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

11

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

22

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

33

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.

44

Annual PM Planning HorizonAnnual PM Planning Horizon

Apr 2008

Apr 2008

Apr 2010

Apr 2010

Jul 1997

Jul 1997

PM 2.5 Standard First

Promulgated

Nov 2004

Nov 2004

Final Nonattainment Designations Issued

SIP due to EPA

Attainment Deadline

April 2005

April 2005

Final Nonattainment Designations Effective

55

Redesignation

in

4 Easy Steps

66

STEP 1STEP 1

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

77

Annual PM2.5 Design Value(Washington Region)

16.5

17.1

15.8

15.1

14.8 14.8

14.014.515.015.5

16.016.517.017.5

1999-2001 2000-2002 2001-2003 2002-2004 2003-2005 2004-2006

Year

Des

ign

Valu

e (µ

g/m

3)

* 2004-06 data is draft

Annual PM2.5 Standard: 15 ug/m3

88

STEP #2STEP #2

#2 #2 Prepare Redesignation Request Prepare Redesignation Request and Maintenance Plan and Maintenance Plan

2007

99

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

1010

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

1111

WHAT IS A MAINTENANCE PLAN?

1212

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

1313

ComponentsComponents

1)1) Attainment InventoryAttainment Inventory

2)2) Maintenance Demonstration (inventory)Maintenance Demonstration (inventory)

3)3) Monitoring NetworkMonitoring Network

4)4) Verification of continued attainmentVerification of continued attainment

5)5) Contingency Plan Contingency Plan

1414

SIP RequirementsSIP Requirements

• Emission InventoriesEmission Inventories• Rate of Progress Rate of Progress • Conformity/Mobile BudgetConformity/Mobile Budget• RACM AnalysisRACM Analysis• Contingency MeasuresContingency Measures• Attainment DemonstrationAttainment Demonstration

Maintenance PlanMaintenance Plan

NO

No Photochemical Modeling required

1515

PM 2.5 ConformityPM 2.5 Conformity

• Must demonstrate PM 2.5 conformity for PM Direct and Precursor NOx.

October 2007

• 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.

1616

Emission Inventory• Annual for PM Direct and all PM Precursors

(NOx, SO2, Ammonia, VOCs).

Maintenance Plan ComponentsMaintenance Plan Components

Rate of Progress Demonstrations• Not required if attain within 5 years.Conformity/Mobile Budget

• Establish budget for PM and PM Precursors determined to contribute significantly.

RACM Analysis• Identifies Reasonably Available

Control Measures for SIP• Explains why other measures are

not reasonably available

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]

Attainment Demonstration and Weight of Evidence

1717

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)


1818


Rate of Progress Demonstrations

• Must track progress of maintenance plan for an interim year (2010 or 2012)

• No established rate of reduction requirement

1919


Conformity/Mobile Budget• Establish budget for PM and PM Precursors

determined to contribute significantly.

• Establishes budgets for interim and outyear

2020

Maintenance PlanComponentsMaintenance PlanComponents

RACM Analysis• Not Required

2121


Contingency Measures• Measures to be implemented if

region fails to attain by 2020• Region sets trigger for contingency

measures

2222


Maintenance Demonstration• Attainment Inventory approach• Photochemical Modeling for supporting

evidence (2012, 2018)• Control strategy reductions come from

permanent, enforceable measures

2323

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

Plan/SIP Deadline: April 2008

Annual PM2.5 Maintenance Plan Schedule

2424

24-hour PM 2.5 24-hour PM 2.5 StandardStandard

2009

2525

24-Hour PM2.5 Design Value (Washington Region)

37

41

45 44

42

30

35

40

45

50

1999-2001 2000-2002 2001-2003 2002-2004 2003-2005

Year

Des

ign

Val

ue

(µg

/m3)

24-Hour PM2.5 Standard - 35 µg/m3

2626

Annual PM2.5 Design Value(Washington Region)

14.8

15.1

15.8

17.1

16.5

14.0

14.5

15.0

15.5

16.0

16.5

17.0

17.5

1999-2001 2000-2002 2001-2003 2002-2004 2003-2005

Year

De

sig

n V

alu

e (

µg

/m3

)

24-Hour PM2.5 Design Value (Washington Region)

37

41

45 44

42

30

35

40

45

50

1999-2001 2000-2002 2001-2003 2002-2004 2003-2005

Year

Des

ign

Val

ue

(µg

/m3)

2727

24-Hour PM Planning Horizon24-Hour PM Planning Horizon

Apr 2010

Apr 2010

Apr 2015

Apr 2015

Sep 2006

Sep 2006

PM 2.5 Standard Lowered

Nov 2007

Nov 2007

State Recommendations for Designations

Designations Effective

Attainment Deadline

Nov 2009

Nov 2009

EPA Designations SIPs due to EPA

Apr 2013

Apr 2013

2828

For More InformationFor More Information

mwcog.org/environmentmwcog.org/environment

mwcog.org/transportationmwcog.org/transportation

epa.govepa.gov

airnow.govairnow.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.

Documents

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