Technical Support Document (TSD) for the Redesignation Request and Maintenance Plan

For the West Virginia Portion o f the

Steubenville

- Weirton, OH

- WV

1997 PM 2.5 Nonattainment Area

Submitted April 2012 by the West Virginia Department of Environmental Protection

TSD Prepared August 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)

_______ 8/24/2012

__________ Date SignedI. Introduction

The purpose of this document is to provide a technical summary of the Office o f Air Monitoring and Analysis (OAMA) review of the emissions inventories submitted with the Redesignation Request and Mai ntenance Plan for the West Virginia Portion of the Steubenville

- Weirton

, OH

WV 1997 PM 2.5 Nonattainment Area by the West Virginia Department of the Environment (WVDEP). This review does not determine the approvability of the redesignatio n request or
maint enance plan. In a maintenance plan, the emissions inventories are use d 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 technic al summary should be

directed to Walter Wilkie , Associate Director, Office of Air Monitoring and Analysis, at 215

- 814

- 2150 or via email at wilkie.walter@epa.gov

.

II. 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 PM 2.5 emissions (including condensibles), SO 2 and

NO

x

. WVDEP did not include VOC and NH 3 emissions having determine d them to be

in significant for the purpose of this submittal

. This section will discuss the 2008 Attainment Year Inventory that was used in the Steubenville

- Weirton Redesignation Request and Maintenance Plan submitted by WVDEP.

WVDEP compiled emissions in ventories for the West Virginia portion of the

Steubenville

- Weirton Nonattainment Area. The West Virginia portion of the nonattainment area

consists of Brooke and Hancock Counties

.

The 2008 point source inventory contained emissions for n on

- electric ge nerating units ( EGU ) sources in Brooke and Hancock Count ies

. There are no EGU sources in Brooke or Hancock 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) 2008 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 2008 dataset submitted to the NEI with the CAMD

datas et.

For the 2008 Nonpoint emissions, WVDEP used 2008 NEI v1.5 data developed by the

EPA. Commercial marine vessels and l ocomotive emissions contained in the 2008 NEI v1.5

were moved to the non

- road data category

.For 2008 Non

- road mobile sources, WVDEP generated the emissions using EPA’s

NONROAD model. Since marine, air and rail/locomotive (M AR) emissions are not part of the NONROAD model, they were calculated separately outside of the NONROAD model.

The 2008 Onroad Mobile source inventory was develo ped using the most current version of EPA’s highway mobile source emissions model MOVES2010 a

. The Ohio Department of Transportation (ODOT) and the Wood

- Washington

- Wirt Interstate Planning Commission (WWW) performed the analysis in coordination with the Oh io 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 accepta ble.

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.

For Non

- EGU Point source emissions, inventories for 2015 and 2022 were grown from the 2008 inventory using Workforce West Virginia economic forecasts. There are no EGUs located in the WV portion of the Steubenville

- Weirton, OH

- WV area.

Nonpoint source e missions for 2015 and 2022 were based on the 2008 inventory using

Workforce West V ir ginia 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 emissions data . WVDEP compiled and associated Workforce WV’s growth factors with North American Industrial Classification System codes with WVDEP’s Source Classification Codes. Calculations were made and final

est imates reflected both positive and negative growth.

Non

- road source emissions for 2015 and 2022 were developed using monthly

NO N ROAD model runs and summarizations of monthly data to obtain annual data values

. 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 previously for Nonpoint sources.

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

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

.