Technical Support Document (TSD) for the Redesignation Request and Maintenance Plan Forthe West Virginia Portion ofthe Steubenville-Weirton, 

### 0 H-WV 2006 PM2.5NonattainmentArea

Submitted June 2012 by the West Virginia Department ofEnvironmental Protection TSD Prepared August 2013 by Jessica 

### L. Fry Office ofAir Monitoring and Analysis, 3AP40 U.S. Environmental Protection Agency, Region 3 1650 Arch Street Philadelphia, Pennsylvania 19103

Reviewed by Alice H. Chow, Associate Director Office ofAirMonitoring and Analysis (3AP40)

### I. Introduction The purpose ofthis document is to provide atechnical summary ofthe Office ofAirMonitoring and Analysis (OAMA) review ofthe emissions inventories submitted with the Redesignation Request and Maintenance Plan for the West Virginia Portion ofthe Steubenville-Weirton, OHWV 2006 PM2.5Nonattainment Area by the West Virginia Department ofthe Environment (WVDEP). This review does not determine the approvability ofthe redesignation request or maintenance plan. Emissions inventories in a redesignationrequest are used to showpermanent and enforceable emission reductions betweenthe yearthe areawas designated as a nonattainment area and the yearthe area came into attainment. In a maintenanceplan, the emissions inventories are used to reflect the emissions during the time the area came into attainment and are then projected to showthat the area will remain in attainment. Any questions pertaining to this technical summary should be directed to Alice H. Chow, Associate Director, Office ofAir Monitoring and Analysis, at 215-814-2144 or via email at chow.alice@epa.gov. II. Emissions Inventories for Redesignation Request 2005Nonattainment YearInventory In a redesignation request, emissions inventories are used to support the States claimthat 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. The nonattainment year inventory contains primary PM2.5 emissions (including condensibles), S02andNOx. 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 Steubenville-Weirton Redesignation Request and Maintenance Plan submitted by WVDEP. WVDEP compiled emissions inventories for the West Virginiaportion ofthe Steubenville-WeirtonNonattainmentArea. The West Virginia portion ofthe nonattainment area consists ofBrooke and Hancock Counties. The 2005 point source inventory contained emissions for non-electric generating units (EGU) sources in Brooke and Hancock Counties

. 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 ofthe base year inventory. WVpEP used WV Department ofAir Quality's (DAQ) 2005 annual emissions inventory submitted to EPA's National Emissions Inventory (NEI) database and EPA's Clean AirMarkets Division (CAMD) database to compile their inventory. Much ofthe 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 2008 Non-road mobile sources, WVDEP generated the emissions using EPA's NONROAD model. Since marine, air and rail/locomotive (MAR) emissions are notpart ofthe NONROAD model, they were calculated separately outside oftheNONROAD model. The 2008 Onroad Mobile source inventory was developed using the most current version ofEPA'shighway mobile source emissions model MOVES2010a. ODOT and the WWWIPC performed the analysis in coordination with the Ohio Environmental Protection Agency and WVDEP, with additional dataprovided by Ohio EPA, WVDOT, and WVDEP. OAMA staffreviewed the files and the emission results provided by WVDEP and found them to be acceptable.



### 2015and2022Projection Emission Inventories Projection inventories are used to show that the area will remain in attainment. WVDEP used 2015 and 2022 emissionprojections for the interim and maintenance plan end year, respectively. ForNon-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 ofthe Steubenville-Weirton, OH-WV area. Nonpoint source emissions for 2015 and 2022 were based onthe 2008 inventory using Workforce West Virginia economic forecasts. The Workforce WV projections were selected because theirprojections were based more on local data, provided more coverage ofvarious categories, and a widerrange ofyears based on 2008 emissions data. WVDEP compiled and associated Workforce WV's growth factors withNorth American Industrial Classification · System codes with WVDEP's Source Classification Codes. Calculations were made and final estimates reflected both positive and negative growth. Non-road source emissions for 2015 and 2022 were developed using monthly NONROAD model runs and summarizations ofmonthly data to obtain annual datavalues. MAR emissions for 2015 and 2022 were based on the 2008 inventory using Workforce WV economic forecasts. The same methodology was used to project MARemissions as was discussed previously for Nonpoint sources. Onroad mobileprojection emissions for 2015 and 2022 were calculated from MOVES2010aproduced emission factors as performed by the ODOT. OAMA staffreviewed the methodologies provided by WVDEP and found them to be acceptable.,·

For the 2005 Nonpoint emissions, WVDEP used 2005 NEI v2 data developed bythe 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 ofthe NONROAD model, they were calculated separately outside ofthe NONROAD model. The 2005 Onroad Mobile source inventory was'developed using the most current version ofEPA'shighway mobile source emissions model MOVES2010a. The Ohio Department of Transportation (ODOT) and the Wood-Washington-Wirt Interstate Planning Commission (WWWIPC) performed the analysis in coordination with the Ohio Environmental Protection Agency and WVDEP, with additional data provided by Ohio EPA, WestVirginia Department of Transportation (WVDOT), and WVDEP. OAMA staffreviewed the files and the emission results provided by WVDEP and found them to be acceptable.

III. Emissions Inventories for Maintenance Plan 2008Attainment Year InventoryandMaintenancePlan Base Year Inventory Under section 172(c)(3) states are required to submit a comprehensive, accurate, current accounting ofactual emissions from all sources (point, nonpoint, nonroad, and onroad) in the nonattainment area. This inventory contains primary PM2 .5 emissions (including condensibles), S02, NOx, VOC, and NHJ. In a Maintenance Plan, states are required to submit an inventory used for the year ofattainment, 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 lo showthe area will remain in attainment. The base year inventory submitted by WVDEP containsprimary PM25 emissions (including condensibles), S02and NOx

.Emissions for VOC and NH3 for the nonattainment areahave been supplemented with emissions from the 2008 NEI v1.5. This section will discuss the 2008 emissions inventory that was used 

### in the Steubenville-Weirton Redesignation Request and Maintenance Plan in order to fulfill the 172(c)(3) and attainment year emissions inventory requirements. The 2008 point source inventory contained emissions for Non-EGU sources in Brooke and Hancock Counties. 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 ofthe base year inventory. WVDEP used WVDAQ 2008 annual emissions inventory submitted to EPA'sNEI database and EPA's CAMD database to compile their inventory. Much ofthe work in developing the inventory involved realigning the EGUs and Non-EGUs from the 2008 dataset submitted to the NEI with the CAMD dataset. Forthe 2008 Nonpoint emissions, WVDEP used 2008 NEI vl.S data developed by the EPA. Commercial marine vessels and locomotive emissions contained in the 2008 NEI v1.5 were moved to the non-road data category.