# Calcasieu Parish Support Document

### Calcasieu Parish Support Document 1

On March 2, 2015, a consent decree (CD) was filed in the United States District Court for the Northern District of California, San Francisco Division, which settled a suit between the United States Environmental Protection Agency (US EPA) , the Sierra Club , and the Natural Resources Defense Council (Case No. 1

- cv
- 03953). The CD requires US EPA to promulgate remaining area designations under the Primary National Ambient Air Quality S tandard (NAAQS) for Sulfur Dioxide (SO 2 

### ) in three phases: by July 2, 2016 ; December 31, 2017 ; and December 31, 2020.
The first phase of required designations address, in part, sources that according to US EPA’s Air Markets Database emitted more than 16,000 tons of SO 2 

### or emitted more than 2,600 tons of SO 2 

### and had an average emission rate of 0.45 lbs

. of SO 2 

### /mmbtu or higher in 2012. Three such facilities were identified in Louisiana, including two located in Calcasieu Parish and one in De Soto Parish ; both Calcasieu Parish facilities are located in the city of Westlake. Nelson Industrial Steam Company ( NISCO ) , operated b y Entergy Gulf States Louisiana, L.L.C (EGSL) , had an average emission rate of 0.69 lbs. of SO 2 

### /mmbtu in 2012. R S Nelson Generation Plant ( Nelson ) , owned and operated by EGSL , had an average emission rate of 0.46 lbs. of SO 2 

### /mmbtu in 2012.
Calcasieu Parish is located in the southwest corner of Louisiana. The parish encompasses 1,063.66 square miles and has a population of 197,204 according to the latest census data. Lake Charles is the parish seat; the parish also includes the cities of DeQuincy, Sulfur, and Westlake

. 1 

### As of September 1, 2015 , the Louisiana Department of Environment al Quality (LDEQ) recognized 128 permitted facilities as follo ws: 8 facilities that are permitted as major sources of SO 2 

### ; 29 other Title V facilities; and 91 minor source facilities with approximately 75 of those falling into the oil and gas sector. LDEQ operates an ambient air monitor (Westlake Monitor) in Calcasieu Parish to monitor air quality in the Lake Charles metropolitan statistical area

. t he State and Local Air Monitoring Station (SLAMS) monitor, identified as EPA AQS 220190008, uses U.V. Fluorescence and operates continuously for SO 2 

### monitoring purp oses, see figure 1

.



# Figure 1: Calcasieu Parish Permitted Facilities

### Calcasieu Parish Support Document 2

NISCO is a cogeneration plant owned as partnership among CITGO Petroleum Corporation, Phillips 66 Company , EGSL, and Sasol Chemicals (USA) LLC located in Westlake, Louisiana. The facility is opera ted by EGSL and currently operates under the following permits:

 Title V Permit Number 0520

- 00157

- V 3 , issued July 17, 2013 ; and

 Prevention of Significant Deterioration Permit Number PSD

- LA

- 557 (M

- 1) , issued January 5, 2012

.
Nelson is a three unit fossil

- fue led steam/electric generation facility also located in Westlake, Louisiana

. EGSL operate s the facility under the following permits:

 Title V Permit Number 0520

- 00014

- V2 , issued October 4, 2013 ; and

 Acid Rain Title IV Permit No. 0520

- 00014

- IV2 , issued October 4, 2013

. According to Louisiana’s emission reporting database as of September 15, 2015 , 28,942 tons of SO 2 

### w ere emitted in 2014

. The 8 largest SO 2 

### emitters represent 99.5 % of the SO 2 

### emitted in the parish , see t able 1

. SO 2 

### emissions in Calcasieu Parish have seen a reduction of approximately 30% or 7,650 tons since the 2010 SO 2 

### NAAQS was promulgated , see f igure 4

. These reductions were made possible by the installation of a sulfur dioxide scrubber by the Lake Charles Calcining Plant , LDEQ agency interest number (AI) 3439 , in December 2012

. The data provided is consistent with the data provided on US EPA’s website regarding SO 2 

### emissions in Calcasieu Parish

. 2


# Table 1: Calcasieu Parish Title V Facilities’ Emissions 3 

### Agency Interest Number Facility 2014 SO 2 

### Emissions (TPY)
19588 Entergy Gulf States LA LLC

- Nelson Electric Generating Plant * 10543.56
9142 Entergy Gulf States LA LLC

- Nelson Industrial Steam Company * 6106.71
133 Reynolds Metals Co

- Lake Charles Carbon Co * 4926.37
3439 Rain CII Carbon LLC

- Lake Charles Calcining Plant * 4431.75
1250 Citgo Petroleum Corp

- Lake Charles Manufacturing Complex * 1731.44
11496 Louisiana Pigment Co LP

- Titanium Dioxide Plant * 524.81
2538 Phillips 66 Co

- Lake Charles Refinery * 510.00
7835 Agrilectric Power Partners Ltd 62.79
101748 Air Products & Chemical Inc

- Lake Charles Facility ⱡ 26.91
3271 Sasol North America Inc

- Lake Charles Chemical Complex * 21.65
1255 Eagle US 2 LLC

- Lake Charles Complex 17.89
30168 Targa Midstream Services Limited Partnership

- Lake Charles LPG Fractionator 11.21
188813 Big Lake Fuels LLC 10.90†
185422 PPG Industries Inc

- Silica Plant 10.36
6164 Westlake Petrochemicals LLC

- Ethylene Manufacturing Complex 7.08
3585 Calcasieu Refining Co

- Lake Charles Crude Oil Refinery 2.21
42895 Sulphur Plant 1.60 119861 Starks Gas Storage LLC

- Starks Compressor Station 1.34†

### Calcasieu Parish Support Document 3

Agency Interest Number Facility 2014 SO 2 

### Emissions (TPY)
1251 Grace Division 1.23
184545 Cameron Interstate Pipeline LLC

- Holbrook Compressor Station 1.16†
4013 Georgia Gulf Lake Charles LLC

- VCM Plant 0.98
18070 Westlake Styrene LLC

- Styrene Monomer Production Facility 0.85
1253 Equistar Chemicals LP 0.71
81859 Entergy Gulf States LA LLC

- Calcasieu Plant 0.66
1244 Firestone Polymers LLC

- Lake Charles Facility 0.60
9061 Westlake Polymers LLC

- Polyethylene I & II Plants 0.23
3351 Lake Charles LNG Term 0.19
4777 Tennessee Gas Pipeline Co

- Station 820 C

- 1 0.08
26073 Bio

- Lab Inc, A KIK Custom Product Company 0.07
17904 Westlake Styrene LLC

- Marine Terminal 0.04 1006 Citgo Pipeline Co

- Clifton Ridge Terminal 0.02† 2979 Central Crude Inc

- Gillis English Bayou Terminal 0.02† 3766 Citgo Petroleum Corp

- Lake Charles Truck Loading Facility 0.01†
16996 Phillips 66 Co

- Westlake Petroleum Product Terminal 0.01 27518 Westlake Petrochemicals LLC

- Poly III 0.01†
37119 Citgo Pipeline Co

- Pecan Grove Tank Farm 0.01 682 Phillips 66 Pipeline LLC

- Lake Charles Pipeline Facility 0.00

* Major s ources of SO 2 emissions †Permit l imit; actual emissions not reported ⱡ Title V due to CO 2 e. Permit converted to minor source 5/1/2015 

### As previously discussed, LDEQ operates one SLAMS monitor in Calcasieu Parish. In addition to the Westlake Monitor , the Lake Area Industr y Alliance (LAIA) operates two SO 2 

### monitors: the LAIA North Site /Mossville

m onitor ( LAIA North Monitor) ; and the LAIA South Site /Bayou D’Inde m onitor ( LAIA South Monitor ) , see figure 3

. Based on d ata from the three monitors, the concentration of SO 2 

### in th e form of the standard , the 3

- year average of the 99 th 

### percentile of the annual distributions of 1

- hour daily maximum concentrations (Design Value, DV) , is also declining. In fact, all three monitors are in compliance with the 2010 SO 2 

### NAAQS , see figure 4

. Data from the most recent monitori ng period indicates DV s of 33 , 30, and 50 ppb for the Westlake Monitor, the LAIA North Monitor, and the LAIA South Monitor, respectively.

### Calcasieu Parish Support Document 4 

# Figure 3

– Major SO 2 

# Emitters and Area Monitors

Figure 4

– Calcasieu Parish SO 2 

# Emissions and Monitoring Data

20 25 30 35 40 45 50 55 60 65 70

0 5000 10000 15000 20000 25000 30000 35000 40000 45000 50000 55000 60000 65000 Concentration in ppb Emissions in TPY 

### Total Parish

Emissions Westlake Monitor LAIA North Monitor LAIA South Monitor

### Calcasieu Parish Support Document 5

In an effort to support an impending are a designation, t he Calcasieu Parish SO 2 

### Stakeholders Group (Group) conducted modeling to further demonstrate Calcasieu Parish’s attainment status

. The Group utilized 2013 actual emissions , and documented stack parameters and temperatures as reported to LDEQ’s reporting database from the 8 facilities that represent the vast majority of emissions. The Group developed a background concentration of 14.37 ppb using the Westlake Monitoring data as described in the March 2011 US EPA memorandum, Additional Clarification Regarding Application of Appendix W Modeling Guidance for the 1

- Hour NO 2 

### National Ambient Air Quality Standard

. AERMOD , version 14134, was run using five years of meteorological data, building downwash, and a 25 ki lometer (km) by 35 km receptor grid centered on the industrial area. The complete report of the modeling effort is included as appendix A

. The final modeling result yielded a predicted concentration of 168.6 μg/m 3



### , 59.77 ppb

. The predicted concentration was added to the background concentration and compared to the NAAQS. Modeling results indicate that the area is in attainment with the 1

- hour SO 2 

### standard as the value is below 75 ppb.

Based on the technical review of available facility emissions, reliable monitoring data , and supportive modeling results , LDEQ propose s that Calcasieu Parish be designa ted as attainment for the 2010 P rimary SO 2 

### NAAQS

.

1 

### United States Census Bureau: “Calcasieu Parish QuickFacts from the US Census Bureau.” September 2015 2 

### http://www.epa.gov/airtrends/sulfur.html 3 

### 2014 Emissions Reporting & Inventory Center, Louisiana Department of Environmental Quality, Office of Environmental Services, Emission Inventory Group. Released July 6, 2015.

# Appendix A:

Calcasieu SO 2 

# Stakeholders Group Air Quality Modeling Report

# JULY 2009

Prepared By:
Providence Engineering and Environmental Group LLC 1201 Main Street Baton Rouge, Louisiana 70802 (225) 766

- 7400 www.providenceeng.com Project Number 1039

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# AIR QUALITY MODELING REPORT 

# CALCASIEU SO 2 

# STA K E HOLDERS GROUP

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## TABLE OF CONTENTS

Section Page No.

1.0 INTRODUCTION

................................ ................................ ................................ .. 1 2.0 POLLUTANT MODELED

................................ ................................ ..................... 1 3.0 EMISSION SOURCES

................................ ................................ ......................... 2 4.0 AIR DISPERSION MODEL

................................ ................................ .................. 3 5.0 BUILDING WAKE EFFECT S (DOWNWASH)

................................ ..................... 4 6.0 RECEPTOR GRID

................................ ................................ ................................ 4 7.0 METEOROL OGICAL DATA

................................ ................................ ................ 4 8.0 BACKGROUND DETERMINA TION

................................ ................................ .... 4 9.0 MODELING RESULTS

................................ ................................ ........................ 7

LIST OF TABLES

2

- 1 National Ambient Air Quality Standard For SO 2



## ................................ ................... 2 2

- 2 SO 2 

## Emission Trend In Calcasieu Parish

................................ .............................. 2

LIST OF FIGURES

F igure 1 West Lake Monitor

................................ ................................ ................................ 6 2 SO 2 

## Sources In Calcasieu Parish

................................ ................................ ......... 8

LIST OF APPENDICES
Appendix A List of Modeled Sources

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## 1.0 INTRODUCTION On June 22, 2010, the Environmental Protection Agency (EPA) promulgated a new 1

- hour SO 2 

## National Ambient Air Quality Standard (NAAQS). On May 13, 2014, the EPA proposed a data requirements rule to direct state agencies to provide data in order to characterize current air quality in areas of large SO 2 

## sources. The data develo ped by the state agencies with this proposed rule would be used by the EPA in future area attainment designations for the 1

- hour SO 2 

## NAAQS. When a NAAQS is revised, state agencies and the EPA must make area designations under the Clean Air Act (CAA). The area designations process typically relies on air quality concentrations characterized by ambient monitoring data to identify areas that are either meeting or violating the NAAQS. The EPA recognizes that peak concentrations of SO 2 

## are commonly caused by a few major sources in an area , and that peak concentrations are observed relatively close to those sources. Currently, eight major sources of SO 2 

## in Calcasieu Parish have been identified. As part of the NAAQS review process, the EPA conducted an analysis of SO 2 

## monitors across the country and determined that only up to one

- third of the monitors in operation are sited to characterize peak 1

- hour ambient concentrations. The EPA has determine d that the monitoring network as a whole is not appropriately positi oned or of adequate size for the purpose of NAAQS attainment designations.

In the now final data requirements rule, the EPA has promulgated multiple modeling and monitoring approaches for use in the attainment designation of areas with large SO 2 

## sources

. Several of the major facilities located in Calcasieu Parish have joined together to form the Calcasieu SO 2 

## Stakeholders Group (Group). The Group has focused efforts on conducting air quality modeling, using AERMOD, to demonstrate attainment with the SO 2 

## NAAQS. A summary of the modeling effort is given in the report below.

2.0 POLLUTANT MODELED

The new 1

- hour SO 2 

## National Ambien t Air Quality Standard (NAAQS) was established to protect public health by reducing the public’s exposure to high short

- term concentrations. The form of the standard is the 99 th 

## percentile of 1

- hour daily maximum concentrations, averaged over three years

. Table 2
- 1 presents the 1

- hour SO 2 

## NAAQS

.

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## Table 2
- 1 National Ambient Air Quality Standard for SO 2



## Pollutant Primary/

Secondary Averaging

Time Level Form

SO 2 

## Primary 1

- hour 75 ppb 99th percentile of 1

- hour daily maximum concentrations, averaged

over three years With the exception of 2010, Table 2
- 2 shows that SO 2 

## emissions in Calcasieu Parish have gradually fallen over the last five years. This is partly due to Rain CII’s installation and use of a sulfur dioxide scrubber in December 2012.

Table 2
- 2 SO 2 

## Emission Trend in Calcasieu Parish

Year Actual Emissions of SO 2



## (Tons Per Year)
2010 35,950

2011 39,170

2012 36,416

2013 31,932

2014 28,942

3.0 EMISSION SOURCES Calcasieu Parish currently has 151 facilities that are permitted to emit a combined total of 117,562 tons per year of SO 2 

## . The majority of these emissions (117,506 tons per year or 99.5%) come from faci lities that emit greater than 100 tons per year of SO 2



## . Figure 1 shows SO 2 

## sources in Calcasieu Parish.

Modeled emission sources included facilities located within Calcasieu Parish that emit greater than 100 tons per year of SO 2



## . In accordance with EPA’s Final Rule for 1

- Hour Sulfur Dioxide (SO 2 

## ) Primary National Ambient Air Quality Standard (NAAQS) , actual emissions were used

.

“ The EPA proposed that modeling analyses be based on either actual 1

- hour SO 2 

## emis sions from the most recent 3 years or federally enforceable allowable emissions. [...] While actual emissions would be the preferred choice to use for emissions inputs, air agencies have the option of using a more conservative

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## approach by inputting a source’ s most recent 3 years of allowable, or “potential to emit,” emissions. ”

A ctual emissions were obtained from LDEQ’s Emissions Reporting and Inventory Center (ERIC) and based on the 2013 reporting year. Stack parameters were modeled as provided in the 2013 ERIC report

. Emissions from 2013 were used as base case emissions due to Rain CII’s installation and use of a sulfur dioxide scrubber in December 2012

. The sulfur dioxide scrubber is a federally enforceable requirement in the facility’s Title V air pe rmit

. As a result, emissions from 2011 and 2012 are not representative of current or future emissions in Calcasieu Parish

. Reported emissions from 2014 are lower than the reported emissions of 2013. As a result, the 2013 actual emissions are the best repre sentation of current actual emissions and future potential emissions in the study area

. Temporary, non

- routine, and emergency sources of SO 2 

## were removed from the list of emissions sources

. A list of the modeled sources along with the modeled emission rate s and stack parameters is included in Appendix A

. 4.0 AIR DISPERSION MODEL

The American Meteorological Society/Environmental Protection Agency Regulatory Model ( AERMOD ) model Version 14134 was used for the analysis of sulfur dioxide

. AERMOD is an EPA

- approved steady

- state Gaussian plume model capable of modeling multiple sources in complex terrain

. The model is currently used for most industrial sources and is the appropriate model for this analysis

. The Providence/ORIS BEEST Software was used to r un AERMOD.
The analysis used the regulatory default option. The list below identifies these default options:

• Use of elevated terrain algorithms requiring input of terrain height data;

• Use of stack

- tip downwash (except for building downwash cases);

• Use o f calms processing routines;

• Use of missing data processing routines; and

• Use of a 4

- hour half

- life for exponential decay of sulfur dioxide for urban sources. The terrain elevation for each modeled receptor was determined utilizing USGS Nation al Elevation Dataset ( NED ) data in conjunction with the most recent version of AERMAP. No flagpole receptors were used ( i.e. receptor heights were set at zero). AERMAP was used to d etermin e the elevation for buildings, sources , and receptors

. The most recent version o f AERSURFACE was used to determine the site specific surface characteristics (Albedo, B owen ratio, surface roughness). The modeling domain has been determined to be “rural” in terms of the AUER Land Use analysis

. Therefore, the urban option was not select ed in AERMOD.

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## 5.0 BUILDING WAKE EFFECT S (DOWNWASH)

Source proximities were evaluated with respect to nearby structures to determine whether or not the stack emissions might be affected by the turbulent wake of structures and lead to downwash of the plume

. Although it was expected that the building wake would have no effect on dispersion from tall stacks, building wake effect was expected for the other sources

. Therefore, building downwash was included in this analysis for sources where data was available. T his included the following facilities : Citgo Petroleum Corporation

- Lake Charles Manufacturing Complex Entergy Gulf States Louisiana LLC

- Nelson Industrial Steam Co. Entergy Gulf States Louisiana LLC

- Roy S Nelson Plant Rain CII Carbon LLC

- Lake Charl es Calcining Plant Reynolds Metals Company

- Lake Charles Carbon Co. EPA’s Building Profile Input Processor (BPIP) program was used to evaluate building downwash parameters and the dominant downwash structure associated with each emission source

. BPIP uses GEP stack heights to determine building downwash effects

. Downwash effects are limited to stacks located within a 5L radius, where L is the lesser dimension of the structure (height or the maximum projected width), of a structure

. The Schulman

- Scire d irection

- specific downwash technique w as applied to stacks having a height less than or equal to H + 1.5L, where H is the structure height

. The proper height and width dimensions were determined using current EPA guidance.

6.0 RECEPTOR GRID

A n initial 15 x 25 square kilometer receptor grid was placed at the center of the industrial area with 100

- meter spacing

. A second receptor grid with 250

- meter spacing extended five kilometers beyond the first

. A third grid with 500

- meter spacing extended an additional five kilometers from the second. Receptors lying within industrial boundaries or outside of the parish boundary were removed.

7.0 METEOROLOGICAL DATA

The assigned Baton Rouge surface and Lake Charles upper air National Weather Service Station meteorological data for the years 200 9 through 20 1 3 was used for this analysis

. The meteorological data was processed using the most recent version of AERMET

. The anemometer height was ten meters.

8.0 BACKGROUND DET ERMINATION
Hourly sulfur dioxide data was obtained from the Westlake, LA monitor (AQS Number 22

- 019

- 0008) and was used to construct background sulfur dioxide concentration in accordance with the approach described in the March 2011 EPA

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## memorandum Additional Clarification Regarding Application of Appendix W Modeling Guidance for the 1

- Hour NO 2 

## National Ambient Air Quality Standard
, as well as the requirements coded within the AERMOD algorithms.

“Note that while the discussion of NO x 

## chemistry optio ns in this memo is exclusive to the 1

- hour NO 2 

## standard, the discussion of other topics in this memo should apply equally to the 1

- hour SO 2 

## standard, accounting for the slight differences in the form of the 1

- hour NO 2 

## and SO 2 

## standards.”

The Port Arthur, TX monitor (AQS Number 48

- 245

- 0021) was also analyzed for use as background data. The Port Arthur monitor is approximately 45 miles from the modeling domain

. The Port Arthur monitor is near the Gulf of Mexico , and the predomina nt wind direction is heavily influenced by land and sea breezes in the area

. Additionally, the monitor is dominated by the heavily industrial Beaumont

Port Arthur area. The land use surrounding the monitor is primarily residential

. It was determined that the Port Arthur monitor was no t representative of the study area based on distance, meteorological data , and surrounding land use.

The b ackground concentration i s based on the Westlake m onitor located in Westlake, Calcasieu Parish, Louisiana (30.262379°,

- 93.284989°). Monitoring data was collected from 2012 through 2014 and was reviewed to dete r mine a background concentration

. The Westlake monitor is an approved State and Local Air Monitoring Stations (SLAMS) or similar monitor type subject to the quality assurance requirements in 40 C FR Part 58, Appendix A

. The Westlake monitor meets the completeness requirements for monitoring data

. The Westlake monitor is stati oned in the middle of the modeled sulfur dioxide sources

. With the exception of the modeled sources, th e Westlake monitor is not located in a heavily industrial area , based on aerial photography

.

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## FIGURE 1 WEST LAKE MONITOR

The 2012 through 2014 monitoring data and wind direction data were provided by LDEQ

. In order to determine the most representative background concentration, wind directions from modeled sources that would impact the monitor were excluded from the analysis. T h is step remove d or limit ed contributions from the modeled point sources which would result in double

counting emissions. V alues from impact ed sectors were removed from background calculations in accordance with TCEQ’s Air Quality Modeling Guidelines ( APDG 6232v2, Revised 04/15)

. An impacted value , as defined in the guidance document , is a monitored value measured during a period when the wind was blowing from a 90

- degree sector centered on a line between the monitor and the potentially impacting source.

Of the remaining non

- impacted values, the 99th percentile of 1

- hr daily maximum concentrations was selected for each year and averaged over the 3

- year period. This yielded a background concentration of 14.37 ppm.
The Westlake monitor serves as a representative monitor for this analysis because it accounts for the t rue sulfur dioxide concentration in the study area

. The Westlake monitor has a similar land use profile and a mixture of industrial areas and residential areas, as the entire modeling domain. Given the regional

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## nature of sulfur dioxide concentrations, this monitor should be representative of the study area.

9.0 MODELING RESULTS

The f inal modeling result yielded a predicted concentration of 168. 6 μg/m 3 

## ( 59.77 ppb. ) The predicted concentration was added to the background concentrations and compared to the appropriate NAAQS

. 59.77 ppb ( modeled concentration ) + 14.37 ppb ( calculated background ) <7 5 ppb (NAAQS)
The modeled concentration and the background are below the 75 ppb 1

- hour SO 2 

## NAAQS

. Modeling results indicate that the area is in attainment with the 1

- hour SO 2 

## standard

.

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# FIGURE 2

SO 2 

# SOURCES IN CALCASIEU PARISH

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# APPENDIX A

LIST OF MODELED SOURCESAPPENDIX A LIST OF MODELED SOURCES Facility East North Exit Exit Exit 2013 Facility Source Source UTM UTM Height Temp Velocity Diameter SO2

ID Description (m) (m) (ft) (°F) (ft/sec) (ft) (tpy) Reynolds 2-02 Calciner Kiln and Cooler - Normal Operating Scenario 471433 3331505 174 2000 65 14 4547.88

2-02a Calciner Kiln and Cooler - Alternate Operating Scenario 471433 3331505 174 2000 65 14 40.67 3-07 Butts and Scrap- Drying w/ Dust Collection 471566 3331250 30 200 66 4.5 0.00 4-02 Drying with Dust Collection 471693 3331305 90 250 76.9 2.6 0.00 4-24 Thermal Fluid Heater 471646 3331349 30 600 34 1.5 0.00 5-01 Anode Baking Furnace - Normal Operating Scenario 471527 3331485 125.5 147 32 8 332.62 5-01a-1 Anode Bake Furnace- Alternate Operating Scenario 471527 3331485 125.5 147 32 8 0.76 5-01a-2 Anode Bake Furnace- Alternate Operating Scenario 471551 3331484 125.5 147 32 8 0.01 5-01a-3 Anode Bake Furnace- Alternate Operating Scenario 471551 3331484 125.5 147 32 8 0.18 5-13-1 Bake Furnace and Storage Operation (Fugitives) -Summary 471581 3331476 38.6811 -459.67 0.00328 3.28 0.06 5-13-2 Bake Furnace and Storage Operation (Fugitives) -Summary 471630 3331476 38.6811 -459.67 0.00328 3.28 0.06 5-13-3 Bake Furnace and Storage Operation (Fugitives) -Summary 471679 3331476 38.6811 -459.67 0.00328 3.28 0.06 6-14 Kiln Emergency Drive Generator 471449.3 3331406.046 35.33333 1138.73 148.969 0.166667 0.00 6-15 Water Well Emergency Drive Generator 471393 3331700 10 1111.73 195.2301 0.5 0.00 6-16 Kiln Backup Generator 1 471438 3331347 8.5 1133.33 76.39438 0.333333 0.00 Citgo BLR077 Power House Boiler B1C 469263 3338797 80.5 375 38.4 9 49.55

BLR078 Power House Boiler B1B 469236 3338788 74.3 465 31.9 8 43.54 BLR079 Power House Boiler B1, B1A 469211 3338791 125 430 17.2 14.5 86.64 BLR080 Power House Boiler B2 469247 3338773 92.5 400 10.1 9.5 12.36 BLR081 Power House Boiler B2A 469247 3338742 92.5 400 10.2 9.5 13.95 BLR082 Power House Boiler B3, B3B 469232 3338774 75 680 23.3 8 0.00 BLR083 Power House Boiler B3A, B3C 469232 3338737 75 670 12.6 8 10.03 BLR135 Power House Boiler B5A 469267 3338768 100 300 32.3 6.3 16.91 BLR136 Power House Boiler B5 469267 3338747 100 300 33.2 6.3 0.36 CKR199 Coker Blowdown Stack B102 (BD) 469115 3338774 65 672 0.3 1.5 0.02 DCA058 3(VIII-A)1 - DC/DA Stack B-602 (Acid Plant, AAT Area) 468366 3338158 250 180 0.3 5 135.60 DCA058 3(VIII-A)1 - DC/DA Stack B-602 (Acid Plant, AAT Area) 468366 3338158 250 180 0.3 5 0.28 FLR150 3(IV)1 - B-1 Flare 469145 3338587 211 1832 0.2 3.5 0.43 FLR151 3(IV-F)3 - B-4 Flare 469142 3338359 230 1832 0.5 3 0.65 FLR152 3(IX)41 - B-5 Flare 468725 3338785 200 1832 0.1 5 633.83 FLR153 3(IX)42 - B-6 Flare 468725 3338789 200 1832 0.1 4 51.45 FLR154 3(IX)33 - B-7 Flare 468725 3338793 200 1832 0.1 3.5 2.62 FLR155 3(VI)6 - B-8 Flare 468461 3339018 220 1832 0.2 3 445.76 FLR156 3(IV)2 - B-9 Flare 468461 3339009 215 1832 0.3 4 1.96 FLR164 3(XXII)4 - B-11 Flare 468409 3338432 215 1832 0.3 3 0.05 FLR165 3(XXIII)2 - B-12 Flare 468164 3338047 220 1832 0.1 3 3.72 FLR169 2(202)25 - CB-701 468175 3340710 202 1832 0.1 3 0.00

1039-001-001NG Appendix A Table Page 1 of 7 PROVIDENCEAPPENDIX A LIST OF MODELED SOURCES Facility East North Exit Exit Exit 2013 Facility Source Source UTM UTM Height Temp Velocity Diameter SO2

ID Description (m) (m) (ft) (°F) (ft/sec) (ft) (tpy) Citgo FRN025 A-Topper Furnace B-4 469130 3339009 100 366 36.5 7.1 35.58 (Cont.) FRN026 Topper Furnace B-104 469130 3339034 100 265 43.8 7.1 43.92

FRN045 A Cat Steam Superheater Furnace, B-2 468744 3339083 56 800 3.9 2.8 0.52 FRN046 B Cat Steam Superheater Furnace, B-2 468836 3339085 56 800 9.8 2.8 0.48 FRN047 C Cat Steam Superheater Furnace, B-2 468922 3339082 56 800 5.4 2.8 0.59 FRN048 A Cat Feed Preheat Furnace, B-6 468737 3339080 114 760 4.9 7 2.42 FRN049 B Cat Feed Preheat Furnace, B-6 468824 3339080 89.5 755 17.1 4.1 2.93 FRN050 C Cat Feed Preheat Furnace, B-6 468915 3339080 114.4 750 11.3 7 2.83 FRN062 3(X)1 A-Reformer B-101 Furnace 468527 3338902 80 700 30.5 3 0.20 FRN063 3(X)4 Sulfolane B-201 Furnace 468523 3338854 106 665 26.6 5.5 1.32 FRN064 3(X)5 Sulfolane B-202 Furnace 468523 3338831 85 520 16.8 5.7 0.99 FRN065 Vacuum Furnace B-201 469067 3338914 155 780 28.9 5.5 9.20 FRN066 Vacuum Furnace B-2A 469086 3338913 70 780 7.5 6 3.60 FRN067 Vacuum Furnace B-1 469086 3338890 100 840 3.8 5.5 4.61 FRN068 3(I-D)3 Vacuum Furnace B-1 #2 469076 3338890 100 840 3.5 5.5 4.61 FRN069 Coker 1 Furnace B-101 469115 3338774 155 750 13 7 10.23 FRN070 Coker 1 Furnace B-201 469084 3338753 152.5 670 14.2 7 11.01 FRN071 BLCOH Stabilizer Reboiler, B-101 468596 3339076 100 664 14.7 3 1.82 FRN072 Feed Prep Furnace B-101 Stack 1 469086 3338875 100 645 14.8 5.5 7.44 FRN073 FEED PRED B-101 HEATER, STACK #2 469075 3338875 100 645 14.8 5.5 7.44 FRN074 SRF Furnace B-5 469082 3338774 115.5 580 7.2 5.6 3.76 FRN084 3(XVIII-A)1 B-Reformer B-401 Furnace 468524 3338731 101.3 787 24.4 5.7 0.88 FRN085 3(XVIII-A)2 B-Reformer B-406 Furnace 468524 3338723 98.3 750 22.4 5.7 0.79 FRN086 3(XVIII-A)3 B-Reformer B-402 Furnace 468524 3338715 98.3 792 22.6 5.7 0.79 FRN087 3(XVIII-A)4 B-Reformer B-403, 404, 405 Furnaces 468524 3338707 173.4 650 20.2 13.8 5.18 FRN088 3(XXVII-A)1 ISOM B-801 Furnace 468425 3338781 100 600 31 2.2 0.14 FRN090 3(XVIII)1 ALCOH B-101 Furnace 468528 3338764 91.5 875 23.3 4.8 0.48 FRN091 3(XVIII)2 ALCOH B-102 Furnace 468515 3338745 91.5 726 30.6 4.2 0.51 FRN092 3(X-A)1 BOH B-601 Furnace 468446 3338834 63 1010 25.2 3.5 0.32 FRN093 3(X-A)2 BOH B-602 Furnace 468446 3338827 63 880 34.5 3.5 0.50 FRN094 C Topper Furnace B-1C 469087 3338812 100 745 13.6 8 11.53 FRN095 C Topper Furnace B-2C 469085 3338802 120 850 14.8 7 9.37 FRN098 BLCOH Reactor Charge Heater, B-3 468595 3339082 100.7 664 6 4 1.36 FRN107 3(X)6 A-Reformer B-102, 103, 104, 105, 106 Furnaces 468528 3338862 93 400 43.5 6.2 1.43 FRN129 3(XVIII)3 ALCOH B-103 Furnace 468528 3338775 92.4 700 36.8 3.3 0.49 FRN139 Coker II B-201 Furnace 468187 3338768 150 300 15.8 7.5 3.08 FRN140 Coker II B-202 Furnace 468187 3338790 160 300 14.9 7.5 3.02

1039-001-001NG Appendix A Table Page 2 of 7 PROVIDENCEAPPENDIX A LIST OF MODELED SOURCES Facility East North Exit Exit Exit 2013 Facility Source Source UTM UTM Height Temp Velocity Diameter SO2

ID Description (m) (m) (ft) (°F) (ft/sec) (ft) (tpy) Citgo FRN141 3(XXVIII)1 Unicracker B-1,2,3,4,5 Furnaces 468239 3338424 150 325 31.6 8 3.56 (Cont.) FRN144 3(XXII)1 C-Reformer B-501,502,506 Furnaces 468515 3338604 200 320 43.5 7 1.29

FRN145 3(XXII)2 C-Reformer B-503,504,505 Furnaces 468505 3338643 250 290 41.5 13.2 6.66 FRN177 Cat Feed Hydrotreater Recycle Hydrogen Furnace, B-101 468933 3339455 150 713 11.4 7.2 8.73 FRN178 Cat Feed Hydrotreater Fractionator Feed Heater, B-102 468918 3339455 124 713 4.6 6 2.44 FRN266 Furnace B-101 468958 3339248 180 600 7.6 4.2 4.03 FRN267 Furnace B-102 468958 3339234 180 600 4.3 4.2 1.96 FRN268 Reboiler B-103 468958 3339222 180 600 11.3 3.7 2.31 FRN269 Furnace B-201 468958 3339410 180 600 7.7 4.2 2.39 FRN270 Furnace B-202 468958 3339397 180 600 6.2 4.2 2.25 FRN271 Reboiler B-203 468958 3339385 180 600 11.6 3.7 2.55 FRN521 3(XXX)2 Mixed Xylenes B-1001 Furnace 468044 3338448 212 400 41.3 7.2 3.26 FRN562 CV-1 B101A 469055 3339429 175 450 8.3 8.3 10.57 FRN563 CV-1 B101B 469063 3339429 175 450 8.5 8.3 10.35 FRN564 CV-1 B102A 469079 3339431 175 450 22.2 6.9 17.05 FRN565 CV-1 B102B 469098 3339431 175 450 22 6.9 19.22 FUG245 3(MISC)5 - AAT Area Fugitives 469060 3338565 5 77 0.00328 100 0.48 GEN558 3(MISC)GEN - Miscellaneous Power Sources 468333 3338640 10 77 0.3 0.3 0.05 GEN559 3(MISC)Gen EMERG ¿ Emergency Stationary Internal Combustion Engines 468400 3338400 10 77 0.3 0.3 0.03 INC510 EMISSIONS FROM INCIDENTS 468333 3338640 10 77 0.00328 100 0.10 LDL213 3(IX)12 - Marine Loading Uncontrolled 469373 3338553 30 77 0.00328 100 0.07 MSC567 GC 17 FOR AAT AREA 469060 3338565 5 77 0.00328 100 4.92 MSC569 GC17 FOR REFORMER AREA 468482 3338738 5 77 0.00328 100 2.07 MSC571 GC17 FOR POWER THERMAL AREA 469068 3339087 5 77 0.00328 100 20.51 THX158 3(XX-B)1 - Thermal Oxidizer B-407 (AAT Area) 468356 3338155 127 1200 2.1 5.8 0.01 THX158 3(XX-B)1 - Thermal Oxidizer B-407 (AAT Area) 468356 3338155 127 1200 2.1 5.8 0.91 TNK803 3(XX-K)2-1 - T-803 Sulfur Tank 468226 3338168 20 77 0.003 3.4 0.07 TNK805 3(XX-K)2-2 - T-805 Sulfur Tank 468209 3338168 20 77 0.003 3.4 0.07 VCS166 3(IX)34 - B-13 Flare ("A"Dock) 469141 3337856 75 1832 15.5 0.8 0.01 VCS167 3(IX)35 - B-14 Flare ("B/C"Dock) 469216 3338344 100 1832 2.5 2 0.03 VCS176 3(IX)38 - B-700 Wastewater Treatment Plant Flare 468512 3337852 50 1832 1.7 1.7 53.54 VCS527 3(XXX)1 - Vapor Combustor System - Marine Dock 469953 3339145 50 1500 0.2 8 0.00 VNT146 3(XXII)3 C-Reformer CCR Regenerator Vent 468486 3338663 135 344 36.4 0.8 0.41 VNT546 3(X)7 A-Reformer F-102 Regen Vent 468486 3338891 40 100 20 0.5 0.05 VNT547 3(XVIII-A)5 B-Reformer F-409 Regen Vent 468466 3338713 40 100 20 0.5 0.02 VNT613 3(XX-K)1-1 - Sulfur Pit - A SRU (AAT Area) 468383 3338057 20 77 0.5 0.5 0.00 VNT614 3(XX-K)1-2 - Sulfur Pit - C SRU (AAT Area) 468288 3338187 20 77 0.5 0.5 0.00

1039-001-001NG Appendix A Table Page 3 of 7 PROVIDENCEAPPENDIX A LIST OF MODELED SOURCES Facility East North Exit Exit Exit 2013 Facility Source Source UTM UTM Height Temp Velocity Diameter SO2

ID Description (m) (m) (ft) (°F) (ft/sec) (ft) (tpy) Citgo WGS537 A Cat - Wet Gas Scrubber 468738 3339109 223 150 39.9 8 1.56 (Cont.) WGS538 B Cat - Wet Gas Scrubber 468824 3339109 223 150 39.8 8 3.80

WGS539 C Cat - Wet Gas Scrubber 468918 3339109 223 150 40.9 8 5.87 Entergy C1 Unit 1 Boiler Stack A 472310 3350210 425 270 92.4 9 3534.73

C2 Unit 2 Boiler Stack A 472306 3350210 425 270 92.4 9 3301.22 Rain RLP006 Kiln Stack 467700.5 3335260.3 200 1959 57.4 17 1879.00

RLP037 WHB/Baghouse Stack 467764.7 3335329.4 199 215 91.457 8 3591.00 Entergy C3A C3A - Unit 3 Boiler Stack A 472265 3350420 196 301 50 10 0.21

C3B C3B - Unit 3 Boiler Stack B 472247 3350420 196 301 50 10 0.21 C4 C4 - Unit 4 Boiler 472080 3350446 400 300 90 19 5.05 C6 C6 - Unit 6 Boiler 471844 3350564 500 277 99 23 11455.40 C7 C7 - Unit 4 Auxiliary Boiler 472194 3350407 75 776 25.2 6 0.01 Phillips 66 B00005 EP022 HIGH PRESSURE BOILER (B-5) 473686.3 3345619 50 475 54.1 5.5 1.04

B00006 EP023 HIGH PRESSURE BOILER (B-6) 473672.1 3345619 56 475 58.8 6 1.55 B76001 EP109 HIGH PRESSURE BOILER (B-76001) 472994.3 3345714.8 150 325 120.2 6 1.04 CAL2 EP065 NO. 2 CALCINER STACK 473302.3 3345438 213 380 44 10 135.26 FAPI EP092 BENZENE WASTE FLARE (API) 473524.6 3345389.4 45 1832 60.1 0.5 0.01 FCC EP041 FCC REGENERATOR 473530.2 3345507 185 605 132.9 6 170.94 FMVRU2 EP-251 - Flare for MVRU 2 475596.2 3344594.7 60 1000 68 12 0.89 FNORTH EP064 NORTH FLARE 472864.2 3345934 250 1340 327 3.5 3.82 FSOUTH EP031 SOUTH FLARE 473339.1 3345301.8 250 1340 81.8 3.5 0.08 FWEST EP110 WEST FLARE 473101.2 3345292.9 380 1832 15.2 4.5 16.16 H00006 EP006 FCC HEATER (H-6) 473608.3 3345517.9 114 800 19.6 6 0.51 H00009 EP008 HEATING OIL BELT HEATER (H-9) 473503.1 3345561.8 126 900 15 6.7 0.33 H00014 EP061 THERMAL CRACKER HEATER (H-14) 473632.3 3345501.8 113 300 11.2 7.8 0.76 H00015 EP085 LVT HEATER (H-15) 473492.1 3345561.9 94.8 577 12.32 3.2 0.07 H00018 EP013 COKER HEATER (H-18) 473383.1 3345564 105 650 16 7.42 0.36 H00024 EP017 NO. 2 HDS HEATER (H-24) 473465.1 3345453 55 900 18 5 0.29 H00026 EP045 PREMIUM COKER HEATER (H-26) 473388.3 3345514.7 120 375 18.2 5 0.18 H00027 EP086 PREMIUM COKER HEATER (H-27) 473376.2 3345582.8 180 600 34.8 4 0.08 H01101 EP037 NO.3 CRUDE UNIT HEATERS (H-1101) 473535.1 3345645.8 150 325 22.4 8.5 2.18 H01103 EP071 NO 3 VACUUM UNIT HEATER (H-1103) 473589.3 3345638.9 195 400 16 6.6 0.43 H01201 EP063 NO 4 HDS HEATER (H-1201) 473480.3 3345635.8 99 450 17.7 3.9 0.23 H01202 EP072 NO 4 HDS HEATER (H-1202) 473476.2 3345728.7 115 450 18.4 4.9 0.30 H01301 EP040 NO. 5 HDS (HYDRODESULFURIZER) (H-1301) 473480.3 3345641.9 99 450 16.5 3.9 0.24 H02801 EP047 SULFURIC ACID AIR HEATER (H-2801) 473697.2 3345845.8 77 800 5.9 3 0.01 H03001 EP057 NO 2 COKER HEATER (H-3001) 473360.2 3345630.8 165 375 13.8 8 0.98

1039-001-001NG Appendix A Table Page 4 of 7 PROVIDENCEAPPENDIX A LIST OF MODELED SOURCES Facility East North Exit Exit Exit 2013 Facility Source Source UTM UTM Height Temp Velocity Diameter SO2

ID Description (m) (m) (ft) (°F) (ft/sec) (ft) (tpy) Phillips66 H03002 EP058 NO 2 COKER HEATER (H-3002) 473360.3 3345655.8 165 375 13.8 8 1.02 (Cont.) H03101 EP054 NO 6 HDS HEATER (H-3101) 473416.2 3345764.9 100 925 19.9 3 0.11

H03201 EP055 NO 7 HDS HEATER (H-3201) 473414.2 3345744.9 100 925 36.2 3 0.12 H03232 EP073 NO 7 HDS HEATER (H-3232) 473421.2 3345744.9 100 800 26.9 3 0.13 H03801 EP059 NO 3 REFORMER/HDS HEATERS (H-3801) 473688.1 3345701.8 289 375 19.5 10 1.17 H03951 EP067 NO 8 HDS HEATER (H-3951) 473424.2 3345764.9 100 925 17.5 3 0.06 H04050 EP143 H-4050 NO. 4 CTU HEATER (H-4050) 473611.2 3345722.9 171 364 21.5 8.5 1.19 H05401 EP221 SZORB PROCESS HEATER (NH-2) 473647.3 3345751.7 126 900 14.93 6.7 0.24 H11001 EP101 HDC H2 HEATER (H-11001) 472872.3 3345550.8 161.3 461 21.8 4.9 0.21 H11002 EP118 ATMOSPHERIC TOWER HEATER (H-11002) 472886.2 3345550.7 120 462 23.34 4.04 0.11 H11003 EP119 VACUUM TOWER HEATER (H-11003) 472896.1 3345551 120 423 21.22 3.5 0.07 H12001 EP102 HDW/HDF REACTOR CHARGE HEATER (H-12001) 472823.1 3345552.7 120 473 24.3 3.2 0.08 H12002 EP144 HDW/HDF REACTOR CHARGE HEATER (H-12002) 472811.1 3345551.8 120 473 24.3 3.2 0.13 H12003 EP103 HDW/HDF VACUUM CHARGE HEATER (H-12003) 472800.1 3345551.9 120 438 22.69 3.88 0.18 H16001 EP105 HDS CHARGE HEATER (H-16001) 473579.3 3345808.8 120 635 24.3 2.25 0.07 H16101 EP106 1-5 CCR HEATER COMMON STACK (H-16101) 473492.2 3345820.7 253 434 30.4 10.5 1.79 H20002 EP104 CVU FEED HEATER (H-20002) 473484.3 3345758.9 205.25 347 21.2 7.1 0.76 H30001 NO. 2 CTU HEATER (H-30001) 473534.2 3345636.9 171 364 17.3 8.5 1.29 SAP EP042 SULFURIC ACID UNIT 473726.2 3345428.9 150 170 17 4 24.14 SREF10 EP117 NO 10 CCR REGENERATOR VENT 473507.1 3345813.9 150 100 14.23 0.5 13.60 SREF3 EP060 NO 3 REFORMER REGEN VENT 473677.1 3345699.9 93 846 33.2 0.5 1.91 SRU12 EP056 SULFUR PLANT 473570.3 3345406.8 200 480 133 6 72.52 SRU45 EP111 LOHC SULFUR PLANT 472845.3 3345424 150 499 54.65 3.54 97.17 SSZRCV EP232 SZORB CAUSTIC SCRUB REGEN VENT 473591.3 3345779.9 126 600 1.06 0.33 28.91 LA Pigment S88121 OXYGEN SUPERHEATER W340-AX 470403.5 3340682.5 109.6 572 77.01 0.83 0.31

S88122 OXYGEN SUPERHEATER W340-BX 470421.7 3340682.8 109.6 572 77.01 0.83 0.27 S88131 TITANIUM TETRACHLORIDE SUPERHEATER W321-AX 470403.5 3340691.7 109.6 572 154.42 0.83 0.57 S88132 TITANIUM TETRACHLORIDE SUPERHEATER W321-BX 470421.7 3340672.9 109.6 572 154.42 0.83 0.55 S88150 CALCINER OFF-GAS SCRUBBER F476 470407.4 3340564.9 97.8 167 58.47 1.67 0.59 S88221 SPRAY DRYER DUST COLLECTOR F603-A 470374.7 3340513.3 107.6 213 75.45 3 1.50 S88222 SPRAY DRYER DUST COLLECTOR F603-B 470377.6 3340513.3 107.6 213 75.45 3 1.19 S88350 UTILITY BOILER D841-1X (ROUTINE EMISSIONS) 470312.4 3340529.7 79.8 329 94.54 2.75 4.66 S88-90 PROCESS OFF-GAS INCINERATOR STACK 470365.6 3340686.9 251 363 6.64 8.83 590.75 S90351 UTILITY BOILER D841-2X (ROUTINE EMISSIONS) 470312.4 3340524 79.8 329 94.54 2.75 4.59

1039-001-001NG Appendix A Table Page 5 of 7 PROVIDENCEAPPENDIX A LIST OF MODELED SOURCES Facility East North Exit Exit Exit 2013 Facility Source Source UTM UTM Height Temp Velocity Diameter SO2

ID Description (m) (m) (ft) (°F) (ft/sec) (ft) (tpy) Sasol ALU-GB-552 ALU-GB-552 Niro Spray Dryer and Product Recovery 473443 3346664 80 215 62.2 4.8 0.20

ALU-BA-1 Alumina Calciner No. 1 Combustion Vent 473517 3346754 50 250 34.5 0.83 0.01 ALU-XGB-2 Drytec Dryer Dust Collector 473445 3346758 97 235 63.4 3.8 0.08 Facility Research and development facility 473193 3346713 1 70 3.28E-03 100 0.03 ETH-BA-201 Feed Dryer Regenerator 472809 3346405 75 1050 18 2.5 0.08 ETH-BA-401 Acetylene / Propadiene Converter Regenerator 472809 3346405 72 1050 14 2 0.01 ETH-EGF ETH-EGF Enclosed Ground Flare Pilot & Purge Gas Emissions 473086 3346621 96 1832 65.6 1.986 0.02 ETH-F-501 ETH-F-501 Ethylene Unit Elevated Flare Pilot & Purge Gas Emissions 473203 3346788 130 1832 65.6 0.712 0.01 NPU-F-801 NPU-F-801 NPU Flare Pilot, Purge, MO-V9, & W9-2 473604 3346076 150 431 65.6 0.718 0.01 Non-AIMS ETO-FL-10341 ETO Elevated Flare Pilot & Purge 473197 3346361 60 1800 65.6 0.723 0.01 Non-AIMS ETO-FL-10342 ETO Vapor Combustor Unit (VCU) Pilot & Purge 473247 3346160 45 1800 65.6 1.899 0.03 Non-AIMS NPU-F-801 NPU Flare Other Process Vents 473604 3346076 150 431 65.6 0.718 3.50 ETH-BA-101 Ethylene Cracking Furnace 473801 3346363 90 400 71 11.5 1.04 ETH-BA-102 Ethylene Cracking Furnace 473801 3346363 90 400 71 11.5 1.01 ETH-BA-103 Ethylene Cracking Furnace 473801 3346363 90 400 71 11.5 1.02 ETH-BA-104 Ethylene Cracking Furnace 473801 3346363 90 400 71 11.5 0.98 ETH-BA-105 Ethylene Cracking Furnace 473801 3346363 90 400 71 11.5 0.99 ETH-BA-106 Ethylene Cracking Furnace 473801 3346363 90 400 71 11.5 0.95 ETH-BA-107 Ethylene Cracking Furnace 472771 3346414 132 450 28 5 1.16 STM-B7-901 Utility Steam Boiler No. 1 472936 3346384 50 300 46.5 6.5 1.31 STM-B7-902 Utility Steam Boiler No. 2 472936 3346384 50 300 46.5 6.5 0.99 STM-B7-903 Utility Steam Boiler No. 3 472936 3346384 50 300 46.5 6.5 1.00 ALU-BA-2 Alumina Calciner No. 2 Combustion Vent 473513 3346727 50 250 34.5 0.83 0.02 NPU-H-3 Process Heater 473482 3346059 60 580 19.6 3.5 0.13 NPU-H-2 Process Heater 473482 3346021 72.5 640 17 5 0.21 NPU-H-102 Process Heater 473482 3346028 72.5 640 17 4.8 0.23 NPU-H-101 Process Heater 473482 3346041 63.5 581 15 4.8 0.18 ETH-EGF Enclosed Ground Flare Process Offgas Emissions 473086 3346621 96 1832 65.6 1.986 0.89 ETH-F-501 Ethylene Unit Elevated Flare Process Offgas Emissions 473203 3346788 130 1832 65.6 0.712 0.15 ALC-BA-801 OLD HOT OIL HEATER 473264 3346365 101.5 750 22 4.5 0.03 ALC-BA-802 HOT OIL HEATER 473251 3346366 90 640 13 5 0.06 ALC-ECU-3 EMISSION COMBUSTION UNIT #3 473189 3346466 40 1800 3.28E-03 3.279856 0.01 ALC-F-801 ALCOHOL UNIT FLARE PROCESS VENT COMBUSTION 473236 3346362 150 1832 65.6 2.907 0.10 ALC-H6-404 SSO Column Heater 473162 3346673 60 600 6.3 2.5 0.03 ENG-G3-001 ENG G3-001 Administration Generator (Diesel) 473636 3346670 10 200 111.82 0.33 0.07 ENG-G12-001 ENG G12-001 ECHO Generator (Diesel) 473117 3346829 10 200 339.56 0.33 0.01 ENG-E-129 ENG E-129 Fire Water Pump (Diesel) 472754 3346355 10 200 237.06 0.33 0.13

1039-001-001NG Appendix A Table Page 6 of 7 PROVIDENCEAPPENDIX A LIST OF MODELED SOURCES Facility East North Exit Exit Exit 2013 Facility Source Source UTM UTM Height Temp Velocity Diameter SO2

ID Description (m) (m) (ft) (°F) (ft/sec) (ft) (tpy) Sasol ENG-E-130 ENG E-130 Fire Water Pump (Diesel) 472902 3346467 10 200 237.06 0.33 0.13 (Cont.) ENG-G7-906 ENG G7-906 Ethylene Plant Generator (Diesel) 472826 3346590 10 200 339.56 0.33 0.01

ENG-G6-001 ENG G6-001 ETO/Alcohol Generator (Diesel) 473378 3346466 10 200 507.99 0.33 0.01 ENG-G10-001 ENG G10-001 ASU Generator (Diesel) 472977 3346350 10 200 507.99 0.33 0.01 ENG-L6-56 ENG L6-56 Radio Tower Generator (Diesel) 473202 3346163 10 200 9.03 0.33 0.01 ENG-E6-806 ENG Firewater Pump 3 E6-806 (Diesel) 472754 3346355 10 200 223.51 0.33 0.13 ENG-N6-802 ENG Firewater Pump 4 N6-802 (Diesel) 472902 3346467 10 200 180.62 0.33 0.10 ENG-L-653 ENG L-653 LAB Compressor (Diesel) 472950 3346946 10 200 126.43 0.33 2.51 LAB-LH-1 PACOL Charge Heater H-201 472878 3346831 161 416 30 4.6 0.30 LAB-LH-3 Hot Oil Heater H-601 472869 3346807 183 530 11 8.5 3.97 LAB-LF-1 LAB-LF-1 - LAB Unit Flare Pilot & Purge 473091 3347044 130 1500 65.6 1.96 0.07 Non-AIMS LAB-LF-1 - LAB Unit Flare Process Vents 473091 3347044 130 1500 65.6 1.96 0.18

1039-001-001NG Appendix A Table Page 7 of 7 PROVIDENCE