Technical Support Document (TSD) for the

Redesignation Request and Maintenance Plan

For the West Virginia Portion of the Martinsburg-Hagerstown, WV-MD

1997 PM2.5 Nonattainment Area

Submitted August 2013 by the West Virginia 

Department of Environmental Protection 

TSD Prepared December 2013 by

Jessica L. Fry

Office of Air Monitoring and Analysis, 3AP40

U.S. Environmental Protection Agency, Region 3

1650 Arch Street

Philadelphia, Pennsylvania 19103

/s/

____________________________________________

Reviewed by Alice H. Chow, Associate Director

Office of Air Monitoring and Analysis (3AP40)

January 14, 2014

_________________

Date Signed
I. Introduction

The purpose of this document is to provide a technical summary of the Office of Air Monitoring 

and Analysis (OAMA) review of the emissions inventories submitted with the Redesignation 

Request and Maintenance Plan for the Martinsburg-Hagerstown, WV-MD 1997 PM2.5

Nonattainment Area by the West Virginia Department of Environmental Protection (WVDEP). 

This review does not determine the approvability of the redesignation request or maintenance 

plan. Emissions inventories in a redesignation request are used to show permanent and 

enforceable emission reductions between the year the area was designated as a nonattainment 

area and the year the area came into attainment. In a maintenance plan, the emissions inventories 

are used to reflect the emissions during the time the area came into attainment and are then 

projected to show that the area will remain in attainment. Any questions pertaining to this 

technical summary should be directed to Alice H. Chow, Associate Director, Office of Air 

Monitoring and Analysis, at 215-814-2144 or via email at chow.alice@epa.gov. 

II. Emissions Inventories for Redesignation Request 

2005 Nonattainment Year Inventory 

In a redesignation request, emissions inventories are used to support the States claim that 

the area has permanent and enforceable emissions reductions. In order to do this, the state 

should estimate the percent reduction (from the year that was used to determine the design value 

for designation and classification) achieved from federal and state control measures; this is 

usually termed as the nonattainment year inventory. For the purpose of this plan the year 2005 

was used the nonattainment year inventory. The 2005 nonattainment year inventory contains 

primary PM2.5 emissions (including condensibles), SO2, NOx, VOC, and NH3. This section will 

discuss the 2005 nonattainment year inventory that was used in the Martinsburg-Hagerstown, 

WV-MD Redesignation Request and Maintenance Plan submitted by WVDEP.

WVDEP compiled emissions inventories for the West Virginia portion of the

nonattainment area which consists of Berkeley County, WV. 

The 2005 point source inventory contained emissions for Non-electric generating units 

(EGUs) sources in Berkeley County. There are no EGU sources located in Berkeley County. 

EPA guidance for emissions inventory development provides that actual emissions should be 

used for purposes of the base year inventory. WVDEP used WV Department of Air Quality’s 

(DAQ) 2005 annual emissions inventory submitted to EPA’s National Emissions Inventory 

(NEI) database to compile their inventory. 

For the 2005 nonpoint emissions, WVDEP used 2005 NEI v2 data developed by the 

EPA. 

For 2005 nonroad mobile sources, WVDEP generated the emissions using EPA’s 

NONROAD model. NH3 emissions are not calculated in the NONROAD model and were pulled 
from the 2005 NEI v2. Since marine, air and rail/locomotive (MAR) emissions are not part of 

the NONROAD model, they were calculated separately outside of the NONROAD model. 

The 2005 onroad mobile source inventory was developed using EPA’s highway mobile 

source emissions model MOVES2010a. The analysis was performed by Michael Baker Jr. Inc., 

under contract to the WV Department of Transportation (WVDOT) and the responsible 

Metropolitan Organization (MPO), the Regional Intergovernmental Council (RIC). In order to 

develop local data inputs the latest planning assumptions and regional planning tools were used. 

Data used to develop inputs was obtained from WVDOT, DEP, RIC and other national/local 

sources. 

OAMA staff reviewed the files and the emission results provided by WVDEP and found 

them to be acceptable.

III. Emissions Inventories for Maintenance Plan

2007 Attainment Year Inventory and Maintenance Plan Base Year Inventory

Under section 172(c)(3) states are required to submit a comprehensive, accurate, current 

accounting of actual emissions from all sources (point, nonpoint, nonroad, and onroad) in the 

nonattainment area. This inventory contains primary PM2.5 emissions (including condensibles), 

SO2, NOx, VOC, and NH3. In a Maintenance Plan, states are required to submit an inventory used 

for the year of attainment, which is called the attainment year inventory and can also be referred 

to as the maintenance plan base year inventory. This inventory is used as the basis for the 

projected inventories that are used to show the area will remain in attainment. The base year 

inventory submitted by WVDEP contains primary PM2.5 emissions (including condensibles), 

SO2, NOx, VOC, and NH3. This section will discuss the 2007 emissions inventory that was used 

in the Martinsburg-Hagerstown, WV-MD Redesignation Request and Maintenance Plan in order 

to fulfill the 172(c)(3) and attainment year emissions inventory requirements.

The 2007 point source inventory contained emissions for Non-EGU sources in Berkeley 

County. There are no EGU sources located in Berkeley County. EPA guidance for emissions 

inventory development provides that actual emissions should be used for purposes of the base 

year inventory. WVDEP used a 2007 point source inventory that was developed by contractors 

working for the Southeastern Modeling, Analysis, and Planning (SEMAP) project. WV 

Department of Air Quality (DAQ) provided the contractor with 2007 point source data, which 

was used in the development of the inventory.

For the 2007 nonpoint emissions, WVDEP used the 2007 SEMAP Area (Nonpoint) 

Source inventory.

For 2007 nonroad mobile sources, WVDEP generated the emissions using EPA’s 

NONROAD model. NH3 emissions are not calculated in the NONROAD model and were pulled 

from the 2007 SEMAP inventory. Since MAR emissions are not part of the NONROAD model, 

they were calculated separately outside of the NONROAD model. 
The 2007 onroad mobile source inventory was developed using EPA’s highway mobile 

source emissions model MOVES2010a. The analysis was performed by Michael Baker Jr. Inc., 

under contract to the WVDOT and the responsible RIC. In order to develop local data inputs the 

latest planning assumptions and regional planning tools were used. Data used to develop inputs 

was obtained from WVDOT, DEP, RIC and other national/local sources. 

OAMA staff reviewed the files and the emission results provided by WVDEP and found 

them to be acceptable.

2017 and 2025 Projection Emission Inventories

Projection inventories are used to show that the area will remain in attainment. WVDEP 

used 2017 and 2025 emission projections for the interim and maintenance plan end year, 

respectively. 

Non-EGU point source emissions, inventories for 2017 and 2025 were grown from the 

SEMAP inventory using growth and control factors prepared by SEMAP’s contractor. There are 

no EGU point sources in Berkeley County.

Nonpoint source emissions for 2017 and 2025 were prepared by WVDAQ by applying 

growth and control factors developed by SEMAP’s contractor.

Nonroad source emissions for 2017 and 2025 were developed using monthly NONROAD 

model runs and summarizations of monthly data to obtain annual data values. WVDAQ created 

growth factors for NH3 emissions by using SEMAP’s 2007 and 2018 NONROAD inventories to 

develop a growth factor and applied these to the 2007 NONROAD emission data. MAR 

emissions for 2017 and 2025 were prepared by WVDAQ by applying growth and control factors 

developed by SEMAP’s contractor.

Onroad mobile projection emissions for 2017 and 2025 were calculated from 

MOVES2010a produced emission factors as performed by Michael Baker Jr. Inc., under contract 

to the WVDOT and RIC.

OAMA staff reviewed the methodologies provided by WVDEP and found them to be 

acceptable.