Technical Support Document (TSD) for the

Redesignation Request and Maintenance Plan

for the West Virginia Portion of the Wheeling, WV-OH

1997 PM2.5 Nonattainment Area  

Submitted March 2012 by the West Virginia 

Department of Environmental Protection 

TSD Prepared May 2012 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 Walter Wilkie, Associate Director

Office of Air Monitoring and Analysis (3AP40)

May 18, 2012

_________________

Date Signed

Introduction

The purpose of this document is to provide a technical summary of the
Office if Air Monitoring and Analysis (OAMA) review of the emissions
inventories submitted with the Redesignation Request and Maintenance
Plan for the West Virginia Portion of the Wheeling, WV-OH 1997 PM2.5
Nonattainment Area by the West Virginia Department of the Environment
(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 use 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
Walter Wilkie, Associate Director, Office of Air Monitoring and
Analysis, at 215-814-2150 or via email at  HYPERLINK
"mailto:wilkie.walter@epa.gov" wilkie.walter@epa.gov . 

II.	Emissions Inventories for Redesignation Request (Base 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 “base year” inventory. The
base year inventory contains primary PM2.5 emissions (including
condensibles), SO2 and NOx.  WVDEP did not include VOC and NH3 emissions
having determined them to be insignificant.  This section will discuss
the 2005 Nonattainment Year Inventory that was used in the Wheeling
Redesignation Request and Maintenance Plan submitted by WVDEP.

WVDEP compiled emissions inventories for the West Virginia portion of
the Wheeling Nonattainment Area.  The West Virginia portion of the
nonattainment area consists of Marshall County and Ohio County.  

The 2005 point source inventory contained emissions for electric
generating units (EGUs) and Non-EGU sources in Marshall County and Ohio
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 and EPA’s Clean Air Markets Division (CAMD) database to
compile their inventory. Much of the work in developing the inventory
involved realigning the EGUs and Non-EGUs from the 2005 dataset
submitted to the NEI with the CAMD dataset.

	

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.  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 the most
current version of EPA’s highway mobile source emissions model
MOVES2010a.  The Ohio Department of Transportation (ODOT) and the
Wood-Washington-Wirt Interstate Planning Commission (WWW) performed the
analysis in coordination with the Ohio Environmental Protection Agency
and WVDEP, with additional data provided by Ohio EPA, West Virginia
Department of Transportation (WVDOT), and WVDEP.  

OAMA staff reviewed the files and the emission results provided by WVDEP
and found them to be acceptable.

III.	Emissions Inventories for Maintenance Plan

2008 Attainment Year Inventory and Maintenance Plan Base Year Inventory

 The inventory used for the year of attainment is called the Attainment
Year Inventory and also is 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 contains primary PM2.5 emissions (including
condensibles), SO2 and NOx . WVDEP did not include VOC and NH3 emissions
having determined them to be insignificant. This section will discuss
the 2008 Attainment Year Inventory that was used in the Wheeling
Redesignation Request and Maintenance Plan submitted by WVDEP.

The 2008 point source inventory contained emissions for EGUs and Non-EGU
sources in Marshall County and Ohio County.  EPA guidance for emissions
inventory development provides that actual emissions should be used for
purposes of the base year inventory. WVDEP used WVDAQ 2008 annual
emissions inventory submitted to EPA’s NEI database and EPA’s CAMD
database to compile their inventory. Much of the work in developing the
inventory involved realigning the EGUs and Non-EGUs from the 2008
dataset submitted to the NEI with the CAMD dataset.

	

For the 2008 Nonpoint emissions, WVDEP used 2008 NEI v1.5 data developed
by the EPA. Commercial marine vessels and locomotive emissions contained
in the 2008 NEI v1.5 were moved to the nonroad data category. 

For 2008 Nonroad mobile sources, WVDEP generated the emissions using
EPA’s NONROAD model.  Since marine, MAR emissions are not part of the
NONROAD model, they were calculated separately outside of the NONROAD
model.  

The 2008 Onroad Mobile source inventory was developed using the most
current version of EPA’s highway mobile source emissions model
MOVES2010a.  The ODOT and the WWW performed the analysis in coordination
with the Ohio Environmental Protection Agency and WVDEP, with additional
data provided by Ohio EPA, WVDOT, and WVDEP.  

OAMA staff reviewed the files and the emission results provided by WVDEP
and found them to be acceptable.

2015 and 2022 Projection Emission Inventories

Projection inventories are used to show that the area will remain in
attainment.  WVDEP used 2015 and 2022 emission projections for the
interim and maintenance plan end year, respectively.  

WVDEP used EPA’s Integrated Planning Model (IPM) projections to
support the Cross State Air Pollution Rule (CSAPR).  IPM projections of
2014 (released as 2014, the projected future year data provided with
this platform is generally representative of several years around 2012
and 2014 such as 2015), 2020 and 2030 were used. WVDEP compiled Point
source EGUs from EPA’s CSAPR inventories of 2015 and 2022 was
interpolated between 2020 and 2030 inventories.  

For Non-EGU emissions, inventories for 2015 and 2022 were grown from the
2008 inventory using Workforce West Virginia economic forecasts.  

	Nonpoint source emissions for 2015 and 2022 were based on the 2008
inventory using Workforce West Virginia economic forecasts.  The
Workforce WV projections were selected because their projections were
based more on local data, provided more coverage of various categories
and a wider range of years, based on 2008. WVDEP compiled and associated
Workforce WV’s growth factors with North American Industrial
Classification System (NAICS) codes with WVDEP’s Source Classification
Codes (SCCs).  Calculations were made and final estimates reflected both
positive and negative growth.

Nonroad source emissions for 2015 and 2022 were developed using monthly
NOROAD model runs and summing the monthly data to obtain annual data. 
MAR emissions for 2015 and 2022 were based on the 2008 inventory using
Workforce WV economic forecasts.  The same methodology was used to
project MAR emissions as was discussed for Nonpoint sources.

Onroad mobile projection emissions for 2015 and 2022 were calculated
from MOVES2010a produced emission factors as performed by the Ohio
Department of Transportation.

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

 Posted June 29, 2011, 2014 Emissions Data Files,
ftp://ftp.epa.gov/EmisInventory/2005v4_2/2014emis/readme_2005v4_2_CAP_BA
FM_HAPs_inventories_2014_inputs.txt

