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Technical Support Document (TSD) for West Virginia's Portion ofthe Huntington-Ashland WV-KY-OH Nonattainment Area's PM2.S State Implementation Plan (SIP) Base Year Inventory

Submitted May 2009 bythe West Virginia Department ofEnvironmental Protection

TSD Prepared July 2010 by Alice 

### H. Chow Office ofAir Monitoring and Analysis, 3AP40 u.S. Environmental Protection Agency, Region 3 1650 Arch Street Philadelphia, Pennsylvania 19103

Reviewed by Walter Wilkie, Associate lrector Office ofAir Monitoring and Analysis, 3AP40

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### Signed

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I. Introduction

The purpose ofthis document is to**provi~e** a technical summary ofthe Office of Air Monitoring and Analysis (OAMA) review ofthe Base Year emissions inventories , submitted with WestVirginia's portion ofthe Huntington-AshlandNonattainmentArea's (Huntington area) PM2.5 SIP bythe West Virginia Department ofthe Envir , onmental :: Protection (WVDEP).' This review determines the approvability ofthe SIP Base Year Inventory and an evaluation ofthe methods used. A SIP Base Year Inventory is the

.. starting point from which other SIP inventories are derived as well as serving as the benchmark for other SIP planning activities, such as the establishment ofan emissions reduction credit-program. On January 5, 2005**th~** West Virginia's portion ofthe Huntington-Ashland's nonattainment area, comprised ofCabell and Wayne Counties 

## arld the Graham Tax District inMason County, was designated as nonattainment for the ' PM2.5 NAAQS. Any, questions pertaining to this technical summary should be directed to Walter 

### K. Wilkie, Associate Director, Office ofAir Monitoring and Analysis, at 215- 814-2150 or via email at wilkie.walter@epa.gov.



### II 2002 SIP Base Year Inventory

The SIP base year inventory is the primary inventory from which other inventories (3-year cycle inventories, reasonable further progress inventories, modeling inventories) are derived. The CleanAirActcalls for State, local, and Tribal agencies to
ensure thatthe base'year inventory is comprehensive, accurate, and current for all actual' emissions. 1 The base year inventory includes emissions estimates from stationary point and nonpoint sources, onroad mobile sources, and nonroad mobile sources. Forthe PM2.5 NAAQS, the pollutapts to be inventoried are PM 10, PM2.5, VOC, NOx, S02 and NH3. Forthe NAAQS, emissions shouldbereported as actual annual emissions. In the Huntington area SIP the base year used was 2002. WVDEP provided a point source inventory for 2002 that contained emissions for electric generating units (EGUs) and Non-EGU sources. There are two EGU sources inthe Huntington area. For EGUs and Non-EGUs WVDEP supplied datato EPA'sNational Emissions Inventory

, (NEI) for 2002, as required bythe Consolidated Emissions Reporting Rule (CERR). West

Virginia submitted filterable PM emissions that were augmented by MACTEC for

. VISTAS to develop primary PM estimates. Forthe 2002 area source emissions, WVDEP used 2002 NEI data developed by the EPA as the starting point for the area source inventory. West Virginia updated estimates for the Residential Fuel/Wood Combustion categories for coal, distillate oil, natural gas, and wood from the 2002 preliminaryNEI file. NH3 emissions estimates were calculated using the Carnegie Mellon University NH3 model. WVDEP used a two step process to develop the Nonroad Mobile source inventory used inthis request. Firstthe emissions for the nonroad soU!ce categories that are included inEPA's NONROAD2005 Mo

. del (NONROAD) were developed. NONROAD estimates fuel consumption and emissions oftotal hydrocarbons, carbon monoxide, nitrogen oxides, sulfur dioxide, and particulate matter for all nonroad mobile source

I "Emissions Inventory Guidance/orImplementation o/Ozone andParticulateMatterNationalAmbient Air Quality Standards (NAAQS) andRegionalHaze Regulations" EPA-4541R-05-001, August 2005

### categories exceptfor aircraft, locomotives, and commercial marine vessels (CMV). The second step was to develop emissions that were not contained 

### inthe NONROAD Model. Aircraft, locomotives, and commercial marine vessels (CMV) emission estimates

. submitted by WVDEP were developed by E.H. Pechan and Associates for VISTAS. OAMA staffreviewed the documentation provided concerning this portion ofthe Nonroad inventory and believes that it is reasonable to use these emission estimates. The MOBILE6 module ofthe SMOKE model was used to develop the onroad mobile source emissions estimates for NOx, 

### NH3, S02, PM, and VOC emissions. MOBILE 6.2 defaults were used for the speed, vehicle age and vehicle mix data. The 2002 vehicle miles traveled (VMT) was obtained from the West VirginiaDepartment of Transportation (WVDOT) and provided 'along with West Virginia-specific temperature data. Mobile emissions values were given annually by SCC. AQAB staffreviewed the files and emissionresults.

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