AIR QUALITY CONFORMITY ANALYSISOF THE

2013 CONSTRAINED LONG RANGE PLAN & FY2013-2018 TRANSPORTATION

IMPROVEMENT PROGRAM

DRAFTJune 13, 2013

Transportation Planning BoardTechnical Committee Item #3

2

Travel Model Adopted in 2012: Version 2.3.39 Calibrated primarily with 2007 information:

2007/08 Household Travel Survey 2007 American Community Survey 2007 traffic counts Transit on-board surveys

2010 model validation objectives: 1. To evaluate calibrated model results against recent travel data:

2010 traffic counts 2010 American Community Survey 2010 Metrorail electronic counts 2010 Geographically Focused Household Travel Survey

2. To refine the model to improve performance and forecasting ability

Validated travel model used in 2013 CLRP Analysis: Version 2.3.52

Travel model validation: background

3

VMT and VMT per capita have not followed historic trends since 2007

Potential Reasons Effect of Recession Fuel Price Volatility Growing Internet-based Commerce and Communications Telecommuting Changing Travel Preferences of the “Millennials” (ages

13-30)

Why is 2010 an Important Validation Year?

4

Source: US DOT/FHWA and US Census Bureau

1987

1989

1991

1993

1995

1997

1999

2001

2003

2005

2007

2009

2011

0

500,000

1,000,000

1,500,000

2,000,000

2,500,000

3,000,000

3,500,000

0

2,000

4,000

6,000

8,000

10,000

12,000

Year

Vehi

cle

Mile

s of

Tra

vel

(mill

ions

)

VMT

per

capi

ta

Total US Vehicle-Miles and Vehicle-Miles per Capita

1987-2012

5

Year Ratio RatioJurisdiction 2005 2007 2010 2011 '11/'07 '11/'10Inner Jurisdictions 14,672,100 14,621,000 14,597,700 14,538,000 0.99 1.00

Suburban Jurisdictions 69,355,500 70,506,100 70,038,800 69,496,900 0.99 0.99Outer Jurisdictions 24,834,600 25,410,400 25,778,000 25,683,300 1.01 1.00

Grand Total 108,862,200 110,537,500 110,414,500 109,718,200 0.99 0.99

VMT for the TPB Planning Area 2005–2011

Legend:

Inner Jurisdictions:DC, Arlington, Alexandria

Suburban Jurisdictions:Montgomery, Prince George’s, Fairfax

Outer Jurisdictions:Loudoun, Prince William, Frederick, Charles

Source: VDOT, MDOT, DDOT HPMS data (does not include local roads)

2004 2005 2006 2007 2008 2009 2010 2011 20120

20,000,000

40,000,000

60,000,000

80,000,000

100,000,000

120,000,000

Year

TPB Planning Area

Suburban Jurisdic-tions

Outer Jurisdictions

Inner Jurisdictions

6

Population for the TPB Planning Area 2005-2011

Legend:

Inner Jurisdictions:DC, Arlington, Alexandria

Suburban Jurisdictions:Montgomery, Prince George’s, Fairfax

Outer Jurisdictions:Loudoun, Prince William, Frederick, Charles

Year Ratio RatioJurisdiction 2005 2007 2010 2011 '11/'07 '11/'10

Inner Jurisdictions 917,100 930,000 949,300 964,500 1.04 1.02Suburban Jurisdictions 2,831,500 2,880,000 2,952,800 2,973,400 1.03 1.01

Outer Jurisdictions 1,009,900 1,063,700 1,144,400 1,168,900 1.10 1.02Grand Total 4,758,500 4,873,700 5,046,500 5,106,800 1.05 1.01Source: Round 8.2 Cooperative Forecasts-

2007 & 2011 figures are linearly interpolated

2004 2005 2006 2007 2008 2009 2010 2011 20120

1,000,000

2,000,000

3,000,000

4,000,000

5,000,000

6,000,000

Year

TPB Planning Area

Suburban Jurisdic-tions

Outer Jurisdictions

Inner Jurisdictions

7

VMT per Capita for the TPB Planning Area 2005-2011

Legend:

Inner Jurisdictions:DC, Arlington, Alexandria

Suburban Jurisdictions:Montgomery, Prince George’s, Fairfax

Outer Jurisdictions:Loudoun, Prince William, Frederick, Charles

Year Ratio RatioJurisdiction 2005 2007 2010 2011 '11/'07 '11/'10

Inner Jurisdictions 16.0 15.7 15.4 15.1 0.96 0.98Suburban Jurisdictions 24.5 24.5 23.7 23.4 0.95 0.99

Outer Jurisdictions 24.6 23.9 22.5 22.0 0.92 0.98Grand Total 22.9 22.7 21.9 21.5 0.95 0.98

2004 2005 2006 2007 2008 2009 2010 2011 20120.0

5.0

10.0

15.0

20.0

25.0

30.0

Year

VMTp

erCa

pita

TPB Planning Area

Suburban Jurisdictions Jurisdictions

Outer Jurisdictions

Inner Jurisdictions

8

Increased non-motorized trip shares in dense-mixed use areas (Area Types 1 and 2)Based on comparisons with non-motorized trip shares observed in geographically focused household travel survey

Applies to non-work purposes only (i.e. did not change work trips)

Refined highway network facility type coding

Improved estimated to observed VMT2012 model: 1.042013 model: 1.00

Implemented several other technical adjustments to improve the performance or internal consistency of individual modeling steps

Validation-related Changes to the Travel Demand Model

9

Non-motorized Trip Adjustment in the Travel Demand Model

• The share of

non-work, non-motorized trips in dense mixed use areas has been adjusted upward

• map represents the year 2010

Area Type 1

 

Area Type 2

Share of Non-work, non-motorized tripsArea 2012 Model 2013 ModelArea Type 1 26% 33%Area Type 2 16% 21%

10

US 50 VA 606 (Loudoun County Pkwy) Northstar Blvd.

Northstar Blvd. To VA 606 US 50 to 1.5 miles

north of US 501.5 miles north of US 50 to

Dulles Greenway

US 50 (at Northstar Blvd.) to VA 606 (at 1.5 miles

north of US 50)

Current Conditions4/5/6 lanes, major/principal

arterial 2/4 lanes, minor arterial 2 lanes, minor arterial-------------

2013 CLRP (no Dulles access improvements) 6 lanes, principal arterial 4 lanes, minor/major arterial 4 lanes, minor/major arterial

-------------

2013 CLRP VDOT A 6 lanes, principal arterial 4 lanes, minor/major arterial 4 lanes, minor/major arterial 4 lanes, principal arterial

2013 CLRP VDOT B4 lanes, limited access facility

+ 6 lanes, principal arterial4 lanes, limited access facility

+ 4 lanes, major arterial 4 lanes, major arterial-------------

2013 CLRP VDOT C (Loudoun County Comprehensive Plan) 6 lanes, limited access facility 8 lanes, limited access facility 4 lanes, major arterial

-------------

VDOT Dulles Access Improvements Alternatives

11

AIR QUALITY CONFORMITY2013 CLRP & FY2013-2018 TIP

Ozone Season VOC

2015 2017 2020 2025 2030 20400

10

20

30

40

50

60

70

59.2

52.5

46.6

42.9

40.6 44

.1

40.6 44

.1

40.6 44

.1

40.6 44

.1

No Dulles Access ImprovementsVDOT ALT AVDOT ALT BVDOT ALT C2009 Attainment Budget

Year

Emis

sion

s In

vent

orie

s (to

ns/d

ay)

2009 Attainment Budget : 66.5 tons/day

12

AIR QUALITY CONFORMITY2013 CLRP & FY2013-2018 TIP

Ozone Season NOx

2015 2017 2020 2025 2030 20400

25

50

75

100

125

150

133.

8

110.

5

87.7

72.1

66.9

68.267 68.2

67.0 68

.2

66.9

68.2

No Dulles Access ImprovementsVDOT ALT AVDOT ALT BVDOT ALT C2009 Attainment Budget2010 Contingency Budget

Year

Emis

sion

s In

vent

orie

s (to

ns/d

ay)

2009 Attainment Budget: 146.1 tons/day

2010 Contingency Budget: 144.3 tons/day

13

AIR QUALITY CONFORMITY2013 CLRP & FY2013-2018 TIP

PM2.5 Precursor NOx

14

2002 2015 2017 2020 2025 2030 20400

20,000

40,000

60,000

80,000

100,000

120,000

140,000

126,95346

,904

38,8

92

31,0

95

25,6

96

23,9

89

24,6

0923,999 24,61823,997

24,6

2023,996

24,6

23

No Dulles Access ImprovementsVDOT ALT AVDOT ALT BVDOT ALT C2002 N0x LevelTier 1 Mobile BudgetsTier 2 Mobile Budgets

Year

Emis

sion

s In

vent

orie

s (

tons

/yea

r)

NOTE: MWAQC approved a PM2.5 Maintenance Plan on 5/22/2013. The Plan contains mobile budgets for years 2017 and 2025, which are shown in this graph for informational purposes only. When they are approved by EPA they will be used for conformity. In the meantime, without approved mobile budgets, it is required that Forecast Year emissions do not exceed Base Year 2002 emissions.

126,953 tons/year

50,051

32,88041,709

27,400

AIR QUALITY CONFORMITY2013 CLRP & FY2013-2018 TIP

Direct PM2.5

15

2002 2015 2017 2020 2025 2030 20400

500

1,000

1,500

2,000

2,500

3,000

3,500

4,000

4,500

3,95

9

1,88

5

1,65

0

1,38

5

1,23

4

1,21

1

1,25

6

1,21

2

1,25

6

1,21

2

1,25

6

1,21

2

1,25

6

No Dulles Access ImprovementsVDOT ALT AVDOT ALT BVDOT ALT CTier 1 Mobile BudgetsTier 2 Mobile Budgets2002 Level

Year

Emis

sion

s In

vent

orie

s (t

ons/

year

)

3,959 tons/year

NOTE: MWAQC approved a PM2.5 Maintenance Plan on 5/22/2013. The Plan contains mobile budgets for years 2017 and 2025, which are shown in this graph for informational purposes only. When they are approved by EPA they will be used for conformity. In the meantime, without approved mobile budgets, it is required that Forecast Year emissions do not exceed Base Year 2002 emissions.

1,2121,2121,212

2,144

1,5871,787

1,350

*September 19, 2012 TPB is Briefed on Draft Call for Projects *October 17, 2012 TPB Releases Final Call for Projects - Transportation Agencies Begin Submitting Project Information through On-Line

Database December 14, 2012 DEADLINE: Transportation Agencies Complete On-Line Submission of Draft Project Inputs. January 4, 2013 Technical Committee Reviews Draft CLRP & TIP Project Submissions and Draft Scope of Work for the Air Quality

Conformity Assessment January 10, 2013 CLRP & TIP Project Submissions and Draft Scope of Work Released for Public Comment *January 16, 2013 TPB is Briefed on Project Submissions and Draft Scope of Work February 9, 2013 Public Comment Period Ends *February 20, 2013 TPB Reviews Public Comments and is asked to Approve Project

Submissions and Draft Scope of Work May 3, 2013 DEADLINE: Transportation Agencies Finalize Congestion Management Documentation Forms (where needed) and

CLRP & TIP Forms1. (Submissions must not impact conformity inputs; note that the deadline for changes affecting conformity inputs was February 20, 2013).

June 13, 2013 Draft CLRP & TIP and Conformity Assessment Released for Public Comment at Citizens Advisory Committee (CAC) *June 19, 2013 TPB Briefed on the Draft CLRP & TIP and Conformity Assessment July 13, 2013 Public Comment Period Ends *July 17, 2013 TPB Reviews Public Comments and Responses to Comments, and

is Presented the Draft CLRP & TIP and Conformity Assessment for Adoption *TPB Meeting

1 By this date, the CLRP forms must include information on the Planning Factors, Environmental Mitigation, Congestion Management Information, and Intelligent Transportation Systems; separate Congestion Management Documentation Forms (where needed) must also be finalized.

Schedule

16