### Appendix C - Floyd County PM 2.5 

### Nonattainment Area Redesignation Request and Maintenance Plan

1 

## Emissions Inventory Development for Floyd County

Emissions inventories for Floyd County were develo ped for attainment year 2007 and future years 2017 and 2023. Direct PM 2.5 emissions and PM 2.5 precursor emissions (SO 2 and NO x ), as defined in the Clean Air Fine Particle Implementation Rule (72 FR 20586), were included in the inventories. The majority of the 2007 attainment year emissions inventory was prepared as part of SESARM’s contracted Southeastern Modeling, Analysis, and Planning (SEMAP) project. The majority of the projected emissions inventories were prepared by Georgia EPD. The attainment year and future year emissions were prepared for four source categories using diffe rent methods. The four source categories are:

 Point sources (EGU and Non-EGU )

 Nonpoint sources (including fire)

 Nonroad mobile sources (including marine, aircraft and railroad)

 Onroad mobile sources



## 1.0 Attainment Year Point Sources

Emissions estimates for point sources in 2007 we re obtained from SEMAP point source inventory v1.8. This inventory includes emissions estimates for 74 very large sources in 2007, 109 additional facilities in 2008, and 66 additional facilities in 2005, which were all submitted to EPA by the state of Georgia. This inventory also includes 19 faciliti es in CAMD database which were not included in the state submittal. For facilities with 2005 and 2008 em issions (but no 2007 emissions), 2007 emissions were estimated based on a linear interpolation be tween facility level 2005 and 2008 emissions on a pollutant-by-pollutant basis to calculate facility leve l 2007 emissions. For facilities with only 2008 data (no 2007 or 2005 data available), the SIC growth factors from the VISTAS Best&Final inventory were used to backcast 2008 reported emissions to 2007. For facilities with only 20 05 data (no 2007 or 2008 data available), the SIC growth factors from the VIST AS Best&Final inventory were used to project 2005 reported emissions to 2007. Af ter the above backcasting and proj ecting was performed, additional adjustments were made for facilities where only 2005 da ta were available and the facility did not operate in 2007 or operated for only part of 2007. Faciliti es that did not operate in 2007 were removed from the NIF files. For facilities that operated for part of 2007, the 2005 emissions were approximated for 2007 by multiply the 2005 emissions by a scaling factor of the number of days the facility operated in 2007 divided 365 days of full year operation. Also, the end date in the NIF EM and PE tables were changed to reflect the actual date that the facility ceased operation. In addition, PM augmentation was performed to generate missing emissions estimates for filterable and primary PM 2.5 , filterable and primary PM10, and condensable PM.

The SEMAP inventory went through review using EPA’s Basic Format and Content Checker tool (EPA 2004) which was used to verify the data was in the correct format, to check for referential integrity and duplicate record issues, and to check certain fields for proper valid codes and ranges. This inventory also went through several rounds of quality assurance (QA) reviews by State and local (S/L) agencies, as well as a review by SEMAP stakeholders. For more information regarding the SEMAP point inventory, please refer to Appendix C-1.

### Appendix C - Floyd County PM 2.5 

### Nonattainment Area Redesignation Request and Maintenance Plan

2 

### 1.1 EGU Point Sources

Emissions estimates for EGU point sources in 2007 were obtained from SEMAP point source inventory v1.8. The only EGU point source in Floyd county is Plant Hammond (Units 1-4). Georgia Power provided updated PM and NH3 emissions data for all Georgia Power facilities. The revised PM emission values include condensable emissions which were previously missing from the inventory.

Emissions in 2017 and 2023 were estimated using grow th factors and control factors. Growth factors were calculated based on coal consumption records and forecasts for the Southeastern region in AEO2010. The SO 2 control factor due to Flue Gas Desulfurization (FGD) was assumed to be 95% according to the VISTAS 2012 Projection Emissions Inventory. The NO x control factor due to Selective Catalytic Reduction (SCR) was assumed to be 82.5% accord ing to the VISTAS 2012 Projection Emissions Inventory. The PM 2.5 control factor due to FGD was assumed to be 50% according to Table 5.4-1 on page 5.4-24 of EPA document "Stationary Source Co ntrol Techniques Document for Fine Particulate Matter" (EC/R Incorporated, 1998). Table 1 contains control dates for Plant Hammond. Tables 2, 3, and 4 contain a list of unit-specific SO 2 , NO x , and PM emissions for 2007, 2017, and 2023 and the associated growth and control factors for Plant Hammond.



### Table 1. EGU Control Dates fo r Plant Hammond (AIRS 11500003)

POINTID NO x Control SO 2 Control Other Controls Actual Operation Required Operation rule (sss) Actual Operation Required Operation rule (sss) SG01 NC NC 5/1/2008 12/31/08 Electrostatic precipitator (ESP) SG02 NC NC 5/1/2008 12/31/08 Electrostatic precipitator (ESP) SG03 NC NC 5/1/2008 12/31/08 Electrostatic precipitator (ESP) SG04 2002, 5/1/2008* 12/31/08 5/1/2008 12/31/08 Electrostatic precipitator (ESP)

* Starting in 2002, SCR was operated during the ozone season. Year-round operation (required by rule (sss)) started May 1, 2008. NC = no control



### Table 2. SO 2 

### emissions projection calculatio ns for EGU point sources (tons)

POINTID 2007 (tons) 2017 2023 Growth Factor Control Factor Emissions Growth Factor Control Factor Emissions

SG01 6028.200 1.013 95% 305.446 1.050 95% 316.338 SG02 6047.400 1.013 95% 306.419 1.050 95% 317.346 SG03 6147.900 1.013 95% 311.511 1.050 95% 322.620 SG04 29585.300 1.013 95% 1499.073 1.050 95% 1552.530



### Table 3. NO

x 

### emissions projection calculations for EGU point sources (tons)

POINTID 2007 (tons) 2017 2023 Growth Factor Control Factor Emissions Growth Factor Control Factor Emissions SG01 1184.350 1.013 1200.209 1.050 1243.008 SG02 1187.590 1.013 1203.493 1.050 1246.409 SG03 1207.070 1.013 1223.234 1.050 1266.854

### Appendix C - Floyd County PM 2.5 

### Nonattainment Area Redesignation Request and Maintenance Plan

3 SG04 3979.070 1.013 82.5% * 1028.442 1.050 82.5%* 1065.115

* In 2007, this unit’s SCR was operated during the ozone season only. The SCR will be operated year-round in 2017 and 2023. Therefore, the fraction of NO x emissions during ozone season in 2007 was calculated using CEM data, and the SCR control factor for NO x projections was applied to non-ozone season emissions only. According to CEM data, the SCR was operated from April to September in 2007.



### Table 4. PM 2.5 

### emissions projection calculatio ns for EGU point sources (tons)

POINTID 2007 (tons) 2017 2023 Growth Factor Control Factor Emissions Growth Factor Control Factor Emissions SG01 99.560 1.013 50% 50.447 1.050 50% 52.246 SG02 100.302 1.013 50% 50.823 1.050 50% 52.635 SG03 101.673 1.013 50% 51.517 1.050 50% 53.354 SG04 270.463 1.013 50% 137.042 1.050 50% 141.929



## 1.2 Non

‐ EGU Point Sources

Emissions estimates for non-EGU point sources in 2007 were obtained from SEMAP point source inventory v1.8, as described in the section for base y ear point sources. Emissions in future years 2017 and 2023 were estimated using SCC- and county-speci fic growth factors generated with the USEPA’s Economic Growth Analysis System version 5.0 (EGAS 5.0). Appendix C-7 contains a summary of the SCC-specific growth factors for Floyd County. Tables 5, 6, and 7 contain a list of specific non-EGU point sources in Floyd County and facility-specific SO 2 , NO x , and PM emissions for 2007, 2017, and 2023. These emissions are not subject to additiona l controls in the future years 2017 and 2023.



### Table 5. SO 2 

### emissions projection for no n-EGU point sources (tons)

PLANT ID FACILITY NAME 2007 2017 2023 11500016 Temple-Inland - Rome Lumber Mill 0.000 0.000 0.000 11500021 Temple-Inland (Rome Linerboard Mill) 3337.490 3535.286 3675.321 11500077 Metal Container Corporation 0.071 0.079 0.086 11500095 Packaging Products Corporation 0.014 0.016 0.017 11500105 General Shale Brick, Inc. - Plant 40 129.011 160.740 181.929



### Table 6. NO

x 

### emissions projection for non-EGU point sources (tons)

PLANT ID FACILITY NAME 2007 2017 2023 11500016 Temple-Inland - Rome Lumber Mill 0.000 0.000 0.000 11500021 Temple-Inland (Rome Linerboard Mill) 2591.150 2780.431 3025.787 11500077 Metal Container Corporation 13.359 14.903 16.230 11500095 Packaging Products Corporation 2.480 2.764 3.011 11500105 General Shale Brick, Inc. - Plant 40 0.000 0.000 0.000

### Appendix C - Floyd County PM 2.5 

### Nonattainment Area Redesignation Request and Maintenance Plan

4 

### Table 7. PM 2.5 

### emissions projection (tons)

PLANT ID FACILITY NAME 2007 2017 2023 11500016 Temple-Inland - Rome Lumber Mill 0.018 0.022 0.025 11500021 Temple-Inland (Rome Linerboard Mill) 379.056 405.354 444.448 11500077 Metal Container Corporation 1.349 1.569 1.754 11500095 Packaging Products Corporation 0.200 0.223 0.243 11500105 General Shale Brick, Inc. - Plant 40 0.000 0.000 0.000



## 2.0 Nonpoint Sources

Emissions from nonpoint sources in 2007 were obtained from the SEMAP nonpoint source inventory v1.1 which was developed by Pechan. Pechan created a default 2007 nonpoint source inventory that includes all of the source categories covered by the 2008 nonpo int source NEI. For all source categories except industrial and commercial/institutional (ICI) fuel com bustion, Pechan either directly incorporated emissions data from the 2008 nonpoint source NEI (when the NEI represented use of 2007 emissions activity data), or recalculated the NEI emission estim ates to reflect 2007 activity levels (when the NEI reflected 2006 or 2008 activity levels) and/or to remove emissions associated with activity reflected in the point source inventory. For ICI fuel combustion, the 2008 nonpoint source NEI only developed emissions activity estimates, not emission estimates. Because of the potential importance of these source categories and the availability of methodological improvements, Pechan utilized an emissions estimation method for ICI fuel combustion incorporates a few refi nements to the NEI method. These emissions were supplemented with carry-forward categories from 2005 GA CERR submission grown using EGAS. For more information regarding the SEMAP nonpoint inventory, please refer to Appendix C-2.

Emissions in future years 2017 and 2023 were es timated using SCC- and county-specific growth factors generated with the USEPA ’s Economic Growth Analysis System version 5.0 (EGAS 5.0). Appendix C-7 contains a summary of the SCC-specific growth factors for Floyd County. These emissions are not subject to additional cont rols in the future years 2017 and 2023.

Emissions from fires in 2007 were obtained from SEM AP final “actual” fire emissions inventory. This inventory was developed using 2007 burned area data submitted by states, as well as updated fuel consumption and emissions factors (MACTEC, SEMAP document is not available yet). Emissions in future years 2017 and 2023 were assumed to be the same as attainment year 2007.



## 3.0 Nonroad Mobile Sources

The nonroad sector is comprised of nonroad e ngines included in EPA’s NONROAD model, such as recreational marine and land-based vehicles, farm, c onstruction and industrial machinery, and lawn and garden equipment. This sector also includes e ngines not modeled in NONROAD, specifically aircraft, commercial marine vessels, and locomotives.



### 3.1 NONROAD Model Category

Emissions from NONROAD model source categories in 2007 were obtained from the SEMAP final nonroad mobile sources emissions inventory. These emissions were calculated using NMIM2008, which incorporates EPA’s latest NONROAD model (NONROAD2008) released in April 2009, and reflects all

### Appendix C - Floyd County PM 2.5 

### Nonattainment Area Redesignation Request and Maintenance Plan

5 of EPA’s final nonroad standards to date. The county/monthly gasoline profile assignments in theCountyYearMonth table and the gasoline fuel profiles in the Gasoline table of the 2007 NMIM countylevel database (NCD) was updated with data provided by the State of Georgia. For more information regarding the SEMAP nonroad inventor y, please refer to Appendix C-2.

Emissions in future years 2017 and 2023 were also calculated using NMIM2008, using the same meteorological inputs as for 2007. Defaults in NMIM 2008 were used for other inputs in future years.



### 3.2 Marine, Aircraft, and Locomotives

Emissions from commercial marine vessels (CMV), aircraft, and locomotives in 2007 were obtained from SEMAP final nonroad mobile sources emissions i nventory. For more information regarding the SEMAP marine, aircraft, and locomotives inventory, please refer to Appendix C-2 (Pechan, 2010). Growth and control factors that were used to develo p future year emissions were provided by Pechan. For more information regarding the SEMAP marine, ai rcraft, and locomotives growth and control factors, please refer to Appendix C-5.

2007 CMV emissions in the SEMAP inventory were based largely on EPA’s 2008 NEI, and then were adjusted to represent 2007. Growth factors fo r residual CMVs were deve loped using average annual growth rates in USEPA regulatory impact analysis (RIA) to support their category 3 engine rulemaking. Growth factors for diesel engine CMV emissions we re based on fuel consumption forecasts published by EIA. Control factors were developed using info rmation from USEPA’s RIA. There were no CMV emissions in Floyd County.

2007 aircraft emissions in the SEMAP inventory were primarily based on EPA’s 2008 NEI, which were back-cast to 2007 using appro ach operations by airport and aircraft type compiled from the FAA’s Air Traffic Activity Data System (ATADS) (FAA, 2010) . Growth factors for all aircraft engine and airport-related SCCs were based on landing and ta ke-off operation (LTO) projections available from the Federal Aviation Administration’s Terminal Area Forecasts (TAF) (FAA, 2010). Growth rates for military aircraft were held constant at 2007 levels. No control factors have been applied to aircraft for criteria pollutant forecasts. Tables 8, 9, and 10 contai n a list of specific aircraft sources in Floyd County and SCC-specific SO 2 , NO x , and PM emissions for 2007, 2017, and 2023 and the associated growth factors.

### Appendix C - Floyd County PM 2.5 

### Nonattainment Area Redesignation Request and Maintenance Plan

6 

### Table 8. SO 2 

### emissions projection for Aircraft (tons)

State Facility Identifier Facility Name SCC Description 2007 2017 2023 Growth Factor Emissions Growth Factor Emissions

2GA8 SHANNON FLIGHT STRIP 2275050011 General Aviation - Piston 0.011 0.881 0.010 0.904 0.010 2GA8 SHANNON FLIGHT STRIP 2275050012 General Aviation - Turbine 0.004 0.881 0.004 0.904 0.004 53GA DAWSON FIELD 2275050011 General Aviation - Piston 0.009 0.881 0.008 0.904 0.008 53GA DAWSON FIELD 2275050012 General Aviation - Turbine 0.003 0.881 0.003 0.904 0.003 RMG RICHARD B RUSSELL 2275001000 Military Aircraft 0.003 1.000 0.003 1.000 0.003 RMG RICHARD B RUSSELL 2275050011 General Aviation - Piston 0.070 0.881 0.062 0.904 0.064 RMG RICHARD B RUSSELL 2275050012 General Aviation - Turbine 0.027 0.881 0.024 0.904 0.025



### Table 9. NO

x 

### emissions projection for Aircraft (tons)

State Facility Identifier Facility Name SCC Description 2007 2017 2023 Growth Factor Emissions Growth Factor Emissions

2GA8 SHANNON FLIGHT STRIP 2275050011 General Aviation - Piston 0.073 0.881 0.065 0.904 0.066 2GA8 SHANNON FLIGHT STRIP 2275050012 General Aviation - Turbine 0.029 0.881 0.025 0.904 0.026 53GA DAWSON FIELD 2275050011 General Aviation - Piston 0.056 0.881 0.050 0.904 0.051 53GA DAWSON FIELD 2275050012 General Aviation - Turbine 0.022 0.881 0.019 0.904 0.020 RMG RICHARD B RUSSELL 2275001000 Military Aircraft 0.029 1.000 0.029 1.000 0.029 RMG RICHARD B RUSSELL 2275050011 General Aviation - Piston 0.458 0.881 0.403 0.904 0.414 RMG RICHARD B RUSSELL 2275050012 General Aviation - Turbine 0.178 0.881 0.157 0.904 0.161

### Appendix C - Floyd County PM 2.5 

### Nonattainment Area Redesignation Request and Maintenance Plan

7 

### Table 10. PM 2.5 

### emissions projection for Aircraft (tons)

State Facility Identifier Facility Name SCC Description 2007 2017 2023 Growth Factor Emissions Growth Factor Emissions

2GA8 SHANNON FLIGHT STRIP 2275050011 General Aviation - Piston 0.184 0.881 0.162 0.904 0.167 2GA8 SHANNON FLIGHT STRIP 2275050012 General Aviation - Turbine 0.072 0.881 0.063 0.904 0.065 53GA DAWSON FIELD 2275050011 General Aviation - Piston 0.142 0.881 0.125 0.904 0.128 53GA DAWSON FIELD 2275050012 General Aviation - Turbine 0.055 0.881 0.049 0.904 0.050 RMG RICHARD B RUSSELL 2275001000 Military Aircraft 0.077 1.000 0.077 1.000 0.077 RMG RICHARD B RUSSELL 2275050011 General Aviation - Piston 1.150 0.881 1.014 0.904 1.040 RMG RICHARD B RUSSELL 2275050012 General Aviation - Turbine 0.447 0.881 0.394 0.904 0.404

2007 locomotive emissions in the SEMAP inventory were obtained from the Eastern Regional Technical Advisory Committee for Class I and Class II/III line haul locomotives and railyards. Passenger and commuter rail line emissions were grown from EPA’s 2002 NEI to 2007. For Class I and Class II/III line haul and diesel switchyard operations, Pechan calc ulated growth factors based on freight rail sector fuel consumption forecasts. For passenger and comm uter rail, growth factors were developed from national forecasts of intercity rail diesel consumption, and commuter rail diesel consumption. Control factors were based on US EPA’s locomotive engine RI A and associated emission factor guidance. Tables 11, 12, and 13 contain a list of specific locomotive sources in Floyd County and SCC-specific SO2, NO x , and PM emissions for 2007, 2017, and 2023 and the associated growth and control factors.



### Table 11. SO 2 

### emissions projection for Locomotives (tons)

SCC Description 2007 2017 2023 Growth Factor Control Factor Emissions Growth Factor Control Factor Emissions

2285002006 Class I 5.998 1.02 95.80 0.256 1.08 95.87 0.266 2285002010 Yard 0.427 1.02 95.80 0.018 1.08 95.87 0.019



### Table 12. NO

x 

### emissions projection for Locomotives (tons)

SCC Description 2007 2017 2023 Growth Factor Control Factor Emissions Growth Factor Control Factor Emissions

2285002006 Class I 526.634 1.02 34.86 348.409 1.08 52.00 271.928 2285002010 Yard 48.403 1.02 17.27 40.668 1.08 30.92 35.967

### Appendix C - Floyd County PM 2.5 

### Nonattainment Area Redesignation Request and Maintenance Plan

8 

### Table 13. PM 2.5 

### emissions projection for Locomotives (tons)

SCC Description 2007 2017 2023 Growth Factor Control Factor Emissions Growth Factor Control Factor Emissions

2285002006 Class I 18.442 1.02 53.97 8.621 1.08 69.84 5.983 2285002010 Yard 1.474 1.02 30.77 1.037 1.08 43.08 0.903



## 4.0 Onroad Mobile

SO 2 , NO x and PM 2.5 emissions from onroad mobile sources in 2007 and 2023 were developed by the Georgia Department of Transportation using MOV ES2010a. MOVES was run at the county level for Floyd County in inventory mode for a July day in Year 2007 and 2023. Average 2007 annual daily meteorological inputs were used in both runs. B est available local data for MOVES inputs such as vehicle population, vehicle miles traveled (VMT) by source types, road type distribution, speed distributions, ramp fractions, hourly VMT fractions and age distribution were used. Please refer to Appendix C-3 for more detailed information. 

## 5.0 QA/QC

Detailed QA/QC efforts for point and fire sour ces were documented in MACTEC’s 2009 Quality Assurance Project Plan (Appendix C-8), and QA/QC e fforts for nonroad and area sources can be found in E.H. Pechan’s 2009 QAPP (Appendix C-9). Onroad m obile source emissions were provided by the Georgia Department of Transportation, and were re viewed by running MOVES independently at Georgia EPD. All MOVES input files have been carefully checked.



## References MACTEC, 2009. Quality Assurance Project Plan for Po int Source, On-Road, and Fire Base Year, Future Year, and Control Strategy Emissions Inventories.

MACTEC, 2011, Development of the Point Source Em ission Inventory for 2007 in the SESARM Region (Version 1.8)

EC/R Incorporated, 1998, Stationary Source Control Techniques Document for Fine Particulate Matter, obtained from http://www.epa.gov/ttncatc1/dir 1/finepmtech.pdf , accessed on 1/19/2011.

E.H. Pechan & Associates, Inc. 2009. Quality A ssurance Project Plan for Non-Road and Area Source Base Year and Future Year Emissions Inventories.

E.H. Pechan & Associates, Inc. 2010. Area and Nonroad 2007 Base Year Inventories Final Report.

E.H. Pechan & Associates, Inc. 2011. Growth and Control Factor Development for Aircraft, Commercial Marine Vessels, and Locomotives

EPA, 2010. U.S. Environmental Protection Agency, EGAS Version 5.0, available for download from http://www.epa.gov/ttnecas1/eg as5.htm, accessed March 2010.