Appendix B 

Stakeholder Correspondence Regarding 

Motor Vehicle Emission Budgets 
Correspondence Regarding MVEBs i 

Hickory and Greensboro/Winston-Salem/High Point Annual PM2.5 Appendix B 

Redesignation Demonstration and Maintenance Plan December 18, 2009 

(This page intentionally left blank) 
Correspondence Regarding MVEBs ii 

Hickory and Greensboro/Winston-Salem/High Point Annual PM2.5 Appendix B 

Redesignation Demonstration and Maintenance Plan December 18, 2009 

Table of Contents 

Letter: 9/16/2005, B. Keith Overcash, NCDAQ’s request for comments on geographic extent for 

motor vehicle emissions budgets for attainment demonstrations ........................................1 

Letter: 9/29/05, Lydia McIntyre, Greensboro Urban Area Metropolitan Planning Organization’s 

response letter to NCDAQ’s 9/16/2005 letter ......................................................................4 

Email: 2/19/2006, Roland Tilley, Citizens for Smart Growth’s response to NCDAQ’s 9/16/2005 

letter .....................................................................................................................................5 

Letter: 6/21/2006, B. Keith Overcash, Response to Lydia McIntyre’s 9/26/2005 letter .................6 

Email: 1/29/2008, Phyllis D. Jones, request for comments on Consultation Plan with MVEB for 

the Hickory NA Area ...........................................................................................................7 

Email: 1/29/2008, Phyllis D. Jones, request for comments Consultation Plan with MVEB for the 

Triad NA Area .....................................................................................................................8 

Motor Vehicle Emissions Budgets Consultation Plan: Mobile Model Settings ..............................9 

Email: 1/29/2008, John Tippett, Greater Hickory Metropolitan Planning Organization’s 

Response to the Motor Vehicle Emissions Budgets Consultation Plan .............................17 
Correspondence Regarding MVEBs iii 

Hickory and Greensboro/Winston-Salem/High Point Annual PM2.5 Appendix B 

Redesignation Demonstration and Maintenance Plan December 18, 2009 

(This page intentionally left blank)
Correspondence Regarding MVEBs 

Hickory and Greensboro/Winston-Salem/High Point Annual PM2.5 

Redesignation Demonstration and Maintenance Plan

 1 

 Appendix B 

December 18, 2009
Correspondence Regarding MVEBs 

Hickory and Greensboro/Winston-Salem/High Point Annual PM2.5 

Redesignation Demonstration and Maintenance Plan

 2 

 Appendix B 

December 18, 2009
Correspondence Regarding MVEBs 

Hickory and Greensboro/Winston-Salem/High Point Annual PM2.5 

Redesignation Demonstration and Maintenance Plan

 3 

 Appendix B 

December 18, 2009
Correspondence Regarding MVEBs 

Hickory and Greensboro/Winston-Salem/High Point Annual PM2.5 

Redesignation Demonstration and Maintenance Plan

 4 

 Appendix B 

December 18, 2009
Correspondence Regarding MVEBs 

Hickory and Greensboro/Winston-Salem/High Point Annual PM2.5 

Redesignation Demonstration and Maintenance Plan

 5 

 Appendix B 

December 18, 2009
Correspondence Regarding MVEBs 

Hickory and Greensboro/Winston-Salem/High Point Annual PM2.5 

Redesignation Demonstration and Maintenance Plan

 6 

 Appendix B 

December 18, 2009
Consultation Plan with MVEB for the Hickory NA Area

1 of 1 2/13/2008 11:30 AM

Subject: Consultation Plan with MVEB for the Hickory NA Area

From: "Phyllis.D.Jones" <Phyllis.D.Jones@ncmail.net>

Date: Tue, 29 Jan 2008 11:12:17 -0500

To: john.tippett@wpcog.org, john.marshall@wpcog.org, lnguyen@dot.state.nc.us,

sarahsmith@dot.state.nc.us, "Alena Cook \(Cook, Alena\)" <arcook@dot.state.nc.us>, "Stark, Jill"

<Jill.Stark@fhwa.dot.gov>

CC: "Dancausse, Edward" <edward.dancausse@fhwa.dot.gov>, george.bridgers@ncmail.net,

janice.godfrey@ncmail.net, keith.melton@dot.gov, tarellano@dot.state.nc.us,

Wood.Amanetta@epamail.epa.gov, Benjamin.Lynorae@epamail.epa.gov, ward.nacosta@epa.gov, Laura

Boothe <laura.boothe@ncmail.net>

Good Morning All, 

As you know, the NCDAQ is planning on pursuing insignificance for Primary PM_2.5 , NOx,

NH_3 , SO_2 , VOC and road dust for the Hickory NA area. When the NCDAQ submits the PM_2.5

SIP for public comment (currently scheduled for 2/11/08), the draft SIP will have two

options, one with a Primary PM_2.5 MVEB for Catawba County, and an option without a MVEB.

If the option without a MVEB is not approved by EPA, the NCDAQ will have to establish a

MVEB for Catawba County. Attached is the consultation plan outlining the MOBILE6.2

parameters used to develop the Primary PM_2.5 MVEB for the Hickory NA area with the MVEB

for Catawba County. The MVEB is calculated using the latest speeds, VMT, vehicle age

distribution and vehicle count data (used to calculate the vehicle mix) supplied by NCDOT.

MOBILE6.2 is insensitive to the such parameters as temperature, RVP, anti-tampering and

I/M commands when calculating PM_2.5 emission factors, therefore, the Primary PM_2.5

emission factor was calculated for a typical summer day (using summertime temperatures,

RVP, etc.) and multiplied by 365 days to calculate an annual emission of kg/year. We

performed various sensitivity runs with MOBILE6.2 to verify this. 

Please provide comments to me by **2/05/08**. I can be reached via phone at 919-715-1246

or e-mail Phyllis.D.Jones@ncmail.net. 

Thanks, 

Phyllis D. Jones, EIT 

Environmental Engineer II 

NCDENR, Division of Air Quality 

1641 MSC, Raleigh, NC 27699 

Phone-(919) 715-1246 

Fac-(919) 715-7476 

www.ncair.org

PM2.5 SIP MVEB Mobile inputs.doc Content-Type: application/msword

Content-Encoding: base64

Correspondence Regarding MVEBs 

Hickory and Greensboro/Winston-Salem/High Point Annual PM2.5 

Redesignation Demonstration and Maintenance Plan

 7 

 Appendix B 

December 18, 2009
Consultation Plan with MVEB for the Triad NA Area

1 of 1 2/13/2008 11:31 AM

Subject: Consultation Plan with MVEB for the Triad NA Area

From: "Phyllis.D.Jones" <Phyllis.D.Jones@ncmail.net>

Date: Tue, 29 Jan 2008 10:53:05 -0500

To: Scott Rhine <scottr@partnc.org>

CC: Eddie Dancausse <edward.dancausse@fhwa.dot.gov>, Lynorae Benjamin

<Benjamin.Lynorae@epamail.epa.gov>, "Terry Arellano, PE" <tarellano@dot.state.nc.us>, George Bridgers

<George.Bridgers@ncmail.net>, Amanetta Wood <Wood.Amanetta@epamail.epa.gov>,

ward.nacosta@epa.gov, Laura Boothe <laura.boothe@ncmail.net>, Janice Godfrey

<Janice.Godfrey@ncmail.net>

Good Morning Scott, 

As you know, the NCDAQ is planning on pursuing insignificance for Primary PM_2.5 , NOx,

NH_3 , SO_2 , VOC and road dust for the Triad NA area. When the NCDAQ submits the PM_2.5

SIP for public comment (currently scheduled for 2/11/08), the draft SIP will have two

options, one with a Primary PM_2.5 MVEB for Davidson and Guilford Counties, and an option

without MVEBs. If the option without MVEBs is not approved by EPA, the NCDAQ will have to

establish MVEBs for Davidson and Guilford Counties. Attached is the consultation plan

outlining the MOBILE6.2 parameters used to develop the Primary PM_2.5 MVEBs for the Triad

NA area with MVEBs for each county. The MVEBs are calculated using the latest speeds, VMT,

vehicle age distribution and vehicle count data (used to calculate the vehicle mix)

supplied by NCDOT. 

I would like to note that there are slight differences in the MOBILE6.2 parameters used to

develop the MVEBs and the current conformity demonstration. MOBILE6.2 is insensitive to

the such parameters as temperature, RVP, anti-tampering and I/M commands when calculating

PM_2.5 emission factors. We performed various sensitivity runs with MOBILE6.2 to verify

this. Therefore, the Primary PM_2.5 emission factors were calculated for a typical summer

day (using summertime temperatures, RVP, etc.) and multiplied by 365 days to calculate an

annual emissions of kg/year. 

Can you please share this with the Triad NA area partners? Please provide comments to me

by **2/05/08**. I can be reached via phone at 919-715-1246 or e-mail

Phyllis.D.Jones@ncmail.net. 

Thanks, 

Phyllis D. Jones, EIT 

Environmental Engineer II 

NCDENR, Division of Air Quality 

1641 MSC, Raleigh, NC 27699 

Phone-(919) 715-1246 

Fac-(919) 715-7476 

www.ncair.org

-- 

************************************************************************************* 

E-mail correspondence to and from this address may be subject to the 

North Carolina Public Records Law and may be disclosed to third parties. 

************************************************************************************* 

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Content-Encoding: base64

Correspondence Regarding MVEBs 

Hickory and Greensboro/Winston-Salem/High Point Annual PM2.5 

Redesignation Demonstration and Maintenance Plan

 8 

 Appendix B 

December 18, 2009
1

Mobile Model Settings for Developing the 2009 MVEB in the PM2.5 Attainment Demonstration for 

Catawba, Davidson, and Guilford Counties 

Parameter Details 

a. Emissions Model Version(s): MOBILE6.2 

b. Emission Model Runs: Average annual weekday. 

c. Time Periods: Used daily data from TRM and Rural areas to calculate the annual 

emissions. 

d. Pollutants Reported: PM2.5

e. Emissions Budget Year: 2009 

f. Vehicle Classes: 16 

g. Max/Min Temperatures: Annual average 2002 max/min temperatures based upon the data 

from the Hickory Regional Airport (KHKY) and the Piedmont 

Triad International Airport (KGSO). 

County 2002 Annual 

Average Max 

(F)

2002 Annual 

Average Min 

(F)

Catawba 70 50 

Davidson 70 49 

Guilford 70 49 

h. VMT Mix: 2009 statewide vehicle mix based upon the 2006 count data 

provided by NCDOT using the method in the August 2004 USEPA 

Emissions Inventory Technical Guidance. 

2009 State Vehicle Mix 

Rural 

 LDV LDT1 LDT2 LDT3 LDT4 HDV2B HDV3 HDV4 

 HDV5 HDV6 HDV7 HDV8a HDV8b HDBS HDBT MC

Interstate 

0.3030 0.0718 0.2389 0.0736 0.0339 0.0880 0.0086 0.0072 

0.0054 0.0197 0.0233 0.0253 0.0900 0.0045 0.0023 0.0045 

Principal Arterial 

0.3591 0.0851 0.2833 0.0873 0.0401 0.0448 0.0044 0.0037 

0.0028 0.0100 0.0119 0.0129 0.0458 0.0023 0.0012 0.0053 

Minor Arterial 

0.3668 0.0869 0.2894 0.0892 0.0410 0.0389 0.0038 0.0032 

0.0024 0.0087 0.0103 0.0112 0.0398 0.0020 0.0010 0.0054 

Major Collector 

0.3827 0.0906 0.3018 0.0930 0.0428 0.0267 0.0026 0.0022 

0.0017 0.0060 0.0071 0.0077 0.0274 0.0014 0.0007 0.0056 

Minor Collector 

0.3821 0.0905 0.3014 0.0929 0.0427 0.0272 0.0027 0.0022 

0.0017 0.0061 0.0072 0.0078 0.0278 0.0014 0.0007 0.0056 

Local 

0.3805 0.0901 0.3001 0.0925 0.0425 0.0284 0.0028 0.0023 

0.0018 0.0064 0.0075 0.0082 0.0291 0.0015 0.0007 0.0056 

Urban 

LDV LDT1 LDT2 LDT3 LDT4 HDV2B HDV3 HDV4 

HDV5 HDV6 HDV7 HDV8a HDV8b HDBS HDBT MC 

Interstate

0.3442 0.0815 0.2714 0.0836 0.0384 0.0564 0.0055 0.0046 

0.0035 0.0126 0.0149 0.0162 0.0577 0.0029 0.0015 0.0051 

Correspondence Regarding MVEBs 

Hickory and Greensboro/Winston-Salem/High Point Annual PM2.5 

Redesignation Demonstration and Maintenance Plan

 9 

 Appendix B 

December 18, 2009
2

Freeway 

0.3699 0.0876 0.2918 0.0899 0.0413 0.0366 0.0036 0.0030 

0.0023 0.0082 0.0097 0.0105 0.0374 0.0019 0.0009 0.0054 

Principal Arterial 

0.3837 0.0909 0.3026 0.0933 0.0429 0.0260 0.0025 0.0021 

0.0016 0.0058 0.0069 0.0075 0.0266 0.0013 0.0007 0.0056 

Minor Arterial 

0.3930 0.0931 0.3100 0.0956 0.0439 0.0188 0.0018 0.0015 

0.0012 0.0042 0.0050 0.0054 0.0192 0.0010 0.0005 0.0058 

Collector 

0.3967 0.0939 0.3127 0.0964 0.0443 0.0161 0.0016 0.0013 

0.0010 0.0036 0.0043 0.0046 0.0165 0.0008 0.0004 0.0058 

Local 

0.3872 0.0917 0.3054 0.0941 0.0433 0.0233 0.0023 0.0019 

0.0014 0.0052 0.0062 0.0067 0.0238 0.0012 0.0006 0.0057 

i. Speeds: From TDM and Rural spreadsheet provided by NCDOT. 

 

 Catawba County Speeds 

Road Type Model Area Non-Model 

Area 

Rural Interstate 0 66 

Rural Principal Arterial 0 47 

Rural Minor Arterial 0 44 

Rural Major Collector 0 43 

Rural Minor Collector 0 42 

Rural Local 0 42 

Urban Interstate 60 63 

Urban Freeway 57 56 

Urban Principal Arterial 27 29 

Urban Minor Arterial 29 32 

Urban Collector 33 31 

Urban Local 29 31 

Correspondence Regarding MVEBs 

Hickory and Greensboro/Winston-Salem/High Point Annual PM2.5 

Redesignation Demonstration and Maintenance Plan

 10 

 Appendix B 

December 18, 2009
3

 Davidson County Speeds 

Road Type Model Area Non-Model 

Area 

Rural Interstate 68 65 

Rural Principal Arterial 60 44 

Rural Minor Arterial 44 43 

Rural Major Collector 44 43 

Rural Minor Collector 48 42 

Rural Local 46 42 

Urban Interstate 66 62 

Urban Freeway 52 56 

Urban Principal Arterial 40 28 

Urban Minor Arterial 40 32 

Urban Collector 37 31 

Urban Local 43 32 

 Guilford County Speeds 

Road Type Model Area 

Rural Interstate 59 

Rural Principal Arterial 57 

Rural Minor Arterial 45 

Rural Major Collector 47 

Rural Minor Collector 46 

Rural Local 44 

Urban Interstate 60 

Urban Freeway 54 

Urban Principal Arterial 40 

Urban Minor Arterial 38 

Urban Collector 38 

Urban Local 37 

j. Vehicle Age Distribution: Based on 2005 vehicle registration data provided by NCDOT. 

NCAge05.prn is used for Davidson and Catawba Counties and 

TrdAge05.prn is used for Guilford County. 

NCAge05.prn 

* MOBILE6 Vehicle Classes: 

* 1 LDV Light-Duty Vehicles (Passenger Cars) 

* 2 LDT1 Light-Duty Trucks 1 (0-6,000 lbs. GVWR, 0-3750 lbs. LVW) 

* 3 LDT2 Light Duty Trucks 2 (0-6,000 lbs. GVWR, 3751-5750 lbs. LVW) 

* 4 LDT3 Light Duty Trucks 3 (6,001-8500 lbs. GVWR, 0-3750 lbs. LVW) 

* 5 LDT4 Light Duty Trucks 4 (6,001-8500 lbs. GVWR, 3751-5750 lbs. LVW) 

* 6 HDV2B Class 2b Heavy Duty Vehicles (8501-10,000 lbs. GVWR) 

* 7 HDV3 Class 3 Heavy Duty Vehicles (10,001-14,000 lbs. GVWR) 

* 8 HDV4 Class 4 Heavy Duty Vehicles (14,001-16,000 lbs. GVWR) 

* 9 HDV5 Class 5 Heavy Duty Vehicles (16,001-19,500 lbs. GVWR) 

* 10 HDV6 Class 6 Heavy Duty Vehicles (19,501-26,000 lbs. GVWR) 

Correspondence Regarding MVEBs 

Hickory and Greensboro/Winston-Salem/High Point Annual PM2.5 

Redesignation Demonstration and Maintenance Plan

 11 

 Appendix B 

December 18, 2009
4

* 11 HDV7 Class 7 Heavy Duty Vehicles (26,001-33,000 lbs. GVWR) 

* 12 HDV8A Class 8a Heavy Duty Vehicles (33,001-60,000 lbs. GVWR) 

* 13 HDV8B Class 8b Heavy Duty Vehicles (>60,000 lbs. GVWR) 

* 14 HDBS School Busses 

* 15 HDBT Transit and Urban Busses 

* 16 MC Motorcycles (All) 

RESULTING MOBILE6-BASED REGISTRATION FRACTIONS 

*

*MOBILE6 REGISTRATION FRACTIONS BY VEHICLE CLASS AND AGE 

* LDV M5 LDGV 

 1 0.061 0.064 0.063 0.065 0.064 0.072 0.069 0.063 0.061 0.056 

 0.061 0.049 0.043 0.035 0.029 0.025 0.023 0.019 0.015 0.011 

 0.009 0.006 0.004 0.002 0.030 

* LDT1 M5 LDGT1 

 2 0.040 0.050 0.047 0.047 0.052 0.058 0.056 0.055 0.057 0.047 

 0.051 0.054 0.039 0.032 0.029 0.028 0.034 0.033 0.028 0.028 

 0.021 0.018 0.012 0.007 0.078 

* LDT2 M5 LDGT1 

 3 0.040 0.050 0.047 0.047 0.052 0.058 0.056 0.055 0.057 0.047 

 0.051 0.054 0.039 0.032 0.029 0.028 0.034 0.033 0.028 0.028 

 0.021 0.018 0.012 0.007 0.078 

* LDT3 M5 LDGT2 

 4 0.071 0.079 0.060 0.049 0.053 0.061 0.059 0.047 0.053 0.041 

 0.050 0.040 0.030 0.023 0.021 0.025 0.031 0.028 0.019 0.021 

 0.018 0.014 0.009 0.006 0.090 

* LDT4 M5 LDGT2 

 5 0.071 0.079 0.060 0.049 0.053 0.061 0.059 0.047 0.053 0.041 

 0.050 0.040 0.030 0.023 0.021 0.025 0.031 0.028 0.019 0.021 

 0.018 0.014 0.009 0.006 0.090 

* HDV2B M5 HDVs (Combined HDGV and HDDV) 

 6 0.069 0.061 0.054 0.045 0.060 0.069 0.069 0.042 0.052 0.040 

 0.049 0.036 0.026 0.021 0.020 0.026 0.028 0.027 0.022 0.021 

 0.018 0.014 0.008 0.007 0.116 

* HDV3 M5 HDVs (Combined HDGV and HDDV) 

 7 0.069 0.061 0.054 0.045 0.060 0.069 0.069 0.042 0.052 0.040 

 0.049 0.036 0.026 0.021 0.020 0.026 0.028 0.027 0.022 0.021 

 0.018 0.014 0.008 0.007 0.116 

* HDV4 M5 HDVs (Combined HDGV and HDDV) 

 8 0.069 0.061 0.054 0.045 0.060 0.069 0.069 0.042 0.052 0.040 

 0.049 0.036 0.026 0.021 0.020 0.026 0.028 0.027 0.022 0.021 

 0.018 0.014 0.008 0.007 0.116 

* HDV5 M5 HDVs (Combined HDGV and HDDV) 

 9 0.069 0.061 0.054 0.045 0.060 0.069 0.069 0.042 0.052 0.040 

 0.049 0.036 0.026 0.021 0.020 0.026 0.028 0.027 0.022 0.021 

 0.018 0.014 0.008 0.007 0.116 

* HDV6 M5 HDVs (Combined HDGV and HDDV) 

 10 0.069 0.061 0.054 0.045 0.060 0.069 0.069 0.042 0.052 0.040 

 0.049 0.036 0.026 0.021 0.020 0.026 0.028 0.027 0.022 0.021 

 0.018 0.014 0.008 0.007 0.116 

* HDV7 M5 HDVs (Combined HDGV and HDDV) 

 11 0.069 0.061 0.054 0.045 0.060 0.069 0.069 0.042 0.052 0.040 

 0.049 0.036 0.026 0.021 0.020 0.026 0.028 0.027 0.022 0.021 

 0.018 0.014 0.008 0.007 0.116 

* HDV8a M5 HDVs (Combined HDGV and HDDV) 

 12 0.069 0.061 0.054 0.045 0.060 0.069 0.069 0.042 0.052 0.040 

 0.049 0.036 0.026 0.021 0.020 0.026 0.028 0.027 0.022 0.021 

 0.018 0.014 0.008 0.007 0.116 

* HDV8b M5 HDVs (Combined HDGV and HDDV) 

 13 0.069 0.061 0.054 0.045 0.060 0.069 0.069 0.042 0.052 0.040 

 0.049 0.036 0.026 0.021 0.020 0.026 0.028 0.027 0.022 0.021 

 0.018 0.014 0.008 0.007 0.116 

Correspondence Regarding MVEBs 

Hickory and Greensboro/Winston-Salem/High Point Annual PM2.5 

Redesignation Demonstration and Maintenance Plan

 12 

 Appendix B 

December 18, 2009
5

* HDBS M5 HDVs (Combined HDGV and HDDV) 

 14 0.069 0.061 0.054 0.045 0.060 0.069 0.069 0.042 0.052 0.040 

 0.049 0.036 0.026 0.021 0.020 0.026 0.028 0.027 0.022 0.021 

 0.018 0.014 0.008 0.007 0.116 

* HDBT M5 HDDVs 

 15 0.093 0.074 0.064 0.051 0.071 0.087 0.089 0.051 0.063 0.044 

 0.051 0.037 0.027 0.019 0.020 0.027 0.026 0.025 0.021 0.014 

 0.013 0.009 0.004 0.004 0.016 

* Motorcycles M5 MC 

 16 0.122 0.092 0.104 0.087 0.076 0.066 0.056 0.042 0.038 0.037 

 0.028 0.024 0.019 0.013 0.010 0.010 0.010 0.010 0.011 0.018 

 0.016 0.013 0.013 0.015 0.070 

TrdAge05.prn

* MOBILE6 Vehicle Classes: 

* 1 LDV Light-Duty Vehicles (Passenger Cars) 

* 2 LDT1 Light-Duty Trucks 1 (0-6,000 lbs. GVWR, 0-3750 lbs. LVW) 

* 3 LDT2 Light Duty Trucks 2 (0-6,000 lbs. GVWR, 3751-5750 lbs. LVW) 

* 4 LDT3 Light Duty Trucks 3 (6,001-8500 lbs. GVWR, 0-3750 lbs. LVW) 

* 5 LDT4 Light Duty Trucks 4 (6,001-8500 lbs. GVWR, 3751-5750 lbs. LVW) 

* 6 HDV2B Class 2b Heavy Duty Vehicles (8501-10,000 lbs. GVWR) 

* 7 HDV3 Class 3 Heavy Duty Vehicles (10,001-14,000 lbs. GVWR) 

* 8 HDV4 Class 4 Heavy Duty Vehicles (14,001-16,000 lbs. GVWR) 

* 9 HDV5 Class 5 Heavy Duty Vehicles (16,001-19,500 lbs. GVWR) 

* 10 HDV6 Class 6 Heavy Duty Vehicles (19,501-26,000 lbs. GVWR) 

* 11 HDV7 Class 7 Heavy Duty Vehicles (26,001-33,000 lbs. GVWR) 

* 12 HDV8A Class 8a Heavy Duty Vehicles (33,001-60,000 lbs. GVWR) 

* 13 HDV8B Class 8b Heavy Duty Vehicles (>60,000 lbs. GVWR) 

* 14 HDBS School Busses 

* 15 HDBT Transit and Urban Busses 

* 16 MC Motorcycles (All) 

* 

REG DIST 

* RESULTING MOBILE6-BASED REGISTRATION FRACTIONS 

* 

*MOBILE6 REGISTRATION FRACTIONS BY VEHICLE CLASS AND AGE 

* LDV M5 LDGV 

 1 0.071 0.067 0.067 0.069 0.069 0.076 0.073 0.066 0.062 0.055 

 0.059 0.046 0.040 0.032 0.026 0.023 0.020 0.016 0.012 0.009 

 0.007 0.005 0.003 0.001 0.024 

* LDT1 M5 LDGT1 

 2 0.041 0.052 0.054 0.052 0.055 0.061 0.058 0.058 0.059 0.048 

 0.053 0.055 0.037 0.032 0.027 0.024 0.031 0.030 0.024 0.024 

 0.017 0.014 0.008 0.006 0.081 

* LDT2 M5 LDGT1 

 3 0.041 0.052 0.054 0.052 0.055 0.061 0.058 0.058 0.059 0.048 

 0.053 0.055 0.037 0.032 0.027 0.024 0.031 0.030 0.024 0.024 

 0.017 0.014 0.008 0.006 0.081 

* LDT3 M5 LDGT2 

 4 0.091 0.081 0.078 0.052 0.062 0.070 0.079 0.062 0.060 0.044 

 0.052 0.042 0.029 0.019 0.017 0.018 0.019 0.020 0.013 0.013 

 0.011 0.007 0.005 0.004 0.053 

* LDT4 M5 LDGT2 

 5 0.091 0.081 0.078 0.052 0.062 0.070 0.079 0.062 0.060 0.044 

 0.052 0.042 0.029 0.019 0.017 0.018 0.019 0.020 0.013 0.013 

 0.011 0.007 0.005 0.004 0.053 

* HDV2B M5 HDVs (Combined HDGV and HDDV) 

 6 0.098 0.084 0.063 0.052 0.076 0.094 0.084 0.046 0.054 0.040 

 0.046 0.031 0.022 0.017 0.015 0.019 0.022 0.018 0.016 0.015 

 0.011 0.008 0.005 0.005 0.059 

* HDV3 M5 HDVs (Combined HDGV and HDDV) 

 7 0.098 0.084 0.063 0.052 0.076 0.094 0.084 0.046 0.054 0.040 

 0.046 0.031 0.022 0.017 0.015 0.019 0.022 0.018 0.016 0.015 

 0.011 0.008 0.005 0.005 0.059 

Correspondence Regarding MVEBs 

Hickory and Greensboro/Winston-Salem/High Point Annual PM2.5 

Redesignation Demonstration and Maintenance Plan

 13 

 Appendix B 

December 18, 2009
6

* HDV4 M5 HDVs (Combined HDGV and HDDV) 

 8 0.098 0.084 0.063 0.052 0.076 0.094 0.084 0.046 0.054 0.040 

 0.046 0.031 0.022 0.017 0.015 0.019 0.022 0.018 0.016 0.015 

 0.011 0.008 0.005 0.005 0.059 

* HDV5 M5 HDVs (Combined HDGV and HDDV) 

 9 0.098 0.084 0.063 0.052 0.076 0.094 0.084 0.046 0.054 0.040 

 0.046 0.031 0.022 0.017 0.015 0.019 0.022 0.018 0.016 0.015 

 0.011 0.008 0.005 0.005 0.059 

* HDV6 M5 HDVs (Combined HDGV and HDDV) 

 10 0.098 0.084 0.063 0.052 0.076 0.094 0.084 0.046 0.054 0.040 

 0.046 0.031 0.022 0.017 0.015 0.019 0.022 0.018 0.016 0.015 

 0.011 0.008 0.005 0.005 0.059 

* HDV7 M5 HDVs (Combined HDGV and HDDV) 

 11 0.098 0.084 0.063 0.052 0.076 0.094 0.084 0.046 0.054 0.040 

 0.046 0.031 0.022 0.017 0.015 0.019 0.022 0.018 0.016 0.015 

 0.011 0.008 0.005 0.005 0.059 

* HDV8a M5 HDVs (Combined HDGV and HDDV) 

 12 0.098 0.084 0.063 0.052 0.076 0.094 0.084 0.046 0.054 0.040 

 0.046 0.031 0.022 0.017 0.015 0.019 0.022 0.018 0.016 0.015 

 0.011 0.008 0.005 0.005 0.059 

* HDV8b M5 HDVs (Combined HDGV and HDDV) 

 13 0.098 0.084 0.063 0.052 0.076 0.094 0.084 0.046 0.054 0.040 

 0.046 0.031 0.022 0.017 0.015 0.019 0.022 0.018 0.016 0.015 

 0.011 0.008 0.005 0.005 0.059 

* HDBS M5 HDVs (Combined HDGV and HDDV) 

 14 0.098 0.084 0.063 0.052 0.076 0.094 0.084 0.046 0.054 0.040 

 0.046 0.031 0.022 0.017 0.015 0.019 0.022 0.018 0.016 0.015 

 0.011 0.008 0.005 0.005 0.059 

* HDBT M5 HDDVs 

 15 0.114 0.090 0.059 0.056 0.082 0.102 0.100 0.047 0.055 0.045 

 0.049 0.033 0.023 0.018 0.018 0.021 0.022 0.016 0.015 0.011 

 0.008 0.006 0.002 0.002 0.008 

* Motorcycles M5 MC 

 16 0.098 0.088 0.105 0.092 0.081 0.073 0.058 0.043 0.038 0.039 

 0.030 0.026 0.023 0.015 0.012 0.010 0.010 0.008 0.012 0.017 

 0.017 0.012 0.011 0.016 0.069 

k. Anti-tampering Applicability: Applies to vehicles 35 years and newer starting with MY 1975. 

l. RVP: RVP does not impact the MOBILE6.2 PM2.5 emission factors, 

therefore, NCDAQ is using the summertime RVP. 

County Average Annual RVP (psi) 

Catawba 9.0 

Davidson 7.8 

Guilford 7.8 

m. I/M Fraction: Will assume 100 percent penetration since MOBILE6.2 PM2.5 

emission factors are not impacted by I/M. 

n. Evaluation month: July 

o. VMT: TRM and rural spreadsheet where applicable. 

Correspondence Regarding MVEBs 

Hickory and Greensboro/Winston-Salem/High Point Annual PM2.5 

Redesignation Demonstration and Maintenance Plan

 14 

 Appendix B 

December 18, 2009
7

Catawba County VMT 

Road Type Model Area Non-Model 

Area 

Rural Interstate 0 56,490 

Rural Principal Arterial 0 75,274 

Rural Minor Arterial 0 73,290 

Rural Major Collector 0 56,815 

Rural Minor Collector 0 90,945 

Rural Local 0 68,374 

Urban Interstate 1,068,778 165,606 

Urban Freeway 318,096 39,019 

Urban Principal Arterial 762,827 167,088 

Urban Minor Arterial 1,132,744 152,147 

Urban Collector 261,444 26,271 

Urban Local 514,186 123,328 

 Davidson County VMT 

Road Type Model Area Non-Model 

Area 

Rural Interstate 306,105 443,207 

Rural Principal Arterial 249,163 287,385 

Rural Minor Arterial 269,215 301,987 

Rural Major Collector 172,846 427,935 

Rural Minor Collector 156,314 215,492 

Rural Local 301,453 157,910 

Urban Interstate 333,251 371,816 

Urban Freeway 676,186 199,204 

Urban Principal Arterial 448,118 372,564 

Urban Minor Arterial 293,172 298,549 

Urban Collector 192,524 57,169 

Urban Local 242,868 131,653 

 Guilford County VMT 

Road Type Model Area 

Rural Interstate 992,132 

Rural Principal Arterial 587,329 

Rural Minor Arterial 198,365 

Rural Major Collector 688,901 

Rural Minor Collector 289,515 

Rural Local 440,324 

Urban Interstate 4,925,953 

Urban Freeway 2,341,290 

Urban Principal Arterial 2,405,902 

Urban Minor Arterial 2,698,219 

Urban Collector 1,143,015 

Urban Local 1,884,921 

Correspondence Regarding MVEBs 

Hickory and Greensboro/Winston-Salem/High Point Annual PM2.5 

Redesignation Demonstration and Maintenance Plan

 15 

 Appendix B 

December 18, 2009
8

p. Diesel Sulfur Content: USEPA Technical Guidance: Use of MOBILE6.2 for Emissions 

Inventory Preparation (August 2004). 

County 2009 Diesel Sulfur (ppm) 

Catawba 43 

Davidson 43 

Guilford 43 

 

s. Annual Emissions: Annual 2009 PM2.5 emissions will be calculated by multiplying 

average daily county emissions by 365 days. 

t. Emissions analysis units: Units = Kilograms/day 

NOTE: NOx has been deemed insignificant for mobile; therefore there is no NOx MVEB. 

MVEBs 

County MVEB 

(Kilograms/year) 

Catawba 48,132 

Davidson 71,152 

Guilford 164,286 

Correspondence Regarding MVEBs 

Hickory and Greensboro/Winston-Salem/High Point Annual PM2.5 

Redesignation Demonstration and Maintenance Plan

 16 

 Appendix B 

December 18, 2009
Correspondence Regarding MVEBs 

Hickory and Greensboro/Winston-Salem/High Point Annual PM2.5 

Redesignation Demonstration and Maintenance Plan

 17 

 Appendix B 

December 18, 2009
Correspondence Regarding MVEBs 

Hickory and Greensboro/Winston-Salem/High Point Annual PM2.5 

Redesignation Demonstration and Maintenance Plan

 18 

 Appendix B 

December 18, 2009