# 1

MEMORANDUM

TO: David Putney, Environmental Protection Agency (EPA)

FROM: David Green, RTI International

Matt Hakos, RTI International

DATE: November 13, 2014

SUBJECT: Revised Draft Development of the RTR Emissions Dataset for the Primary Aluminum

Production Source Category

The purpose of this memorandum is to document the t echnical approach and rationale used to assign

hazardous air pollutant (HAP) emissions data for pr imary aluminum reduction facilities. This work is

being performed pursuant to section 112(f) of the C lean Air Act as part of the residual risk assessmen t

for facilities that are subject to the National Emi ssion Standards for Hazardous Air Pollutants

(NESHAP) for Primary Aluminum Reduction Plants (i.e ., 40 CFR part 63, subpart LL).

I. Source-Specific Emissions, Emission Process Grou ps and Facilities

Emissions estimates were developed for the followin g pollutant categories: speciated HAP metals,

speciated polycyclic aromatic hydrocarbons (PAHs), speciated dioxins/furans (D/Fs), speciated

polychlorinated biphenyls (PCBs), carbonyl sulfide (COS) and hydrogen fluoride (HF). Table 1

summarizes the specific pollutants corresponding to these categories.

Table 1: Summary of Pollutant Categories

Code Pollutant Category

Hazardous Air Pollutant Metals

7440360 Antimony Antimony Compounds

7440382 Arsenic Arsenic Compounds

7440417 Beryllium Beryllium Compounds

7440439 Cadmium Cadmium Compounds

18540299 Chromium (VI) Chromium Compounds

16065831 Chromium (III) Chromium Compounds

7440484 Cobalt Cobalt Compounds

7439921 Lead Lead Compounds

7439965 Manganese Manganese Compounds

7440020 Nickel Nickel Compounds

253 Selenium & Compounds Selenium Compounds

200 Elemental Gaseous Mercury Mercury Compounds

201 Gaseous Divalent Mercury Mercury Compounds

202 Particulate Divalent Mercury Mercury Compounds

Polycyclic Aromatic Hydrocarbons

91203 Naphthalene Naphthalene

91576 2-Methylnaphthalene Polycyclic Organic Matter

83329 Acenaphthene Polycyclic Organic Matter

208968 Acenaphthylene Polycyclic Organic Matter

# 2 Table 1: Summary of Pollutant Categories

Code Pollutant Category

86737 Fluorene Polycyclic Organic Matter

85018 Phenanthrene Polycyclic Organic Matter

120127 Anthracene Polycyclic Organic Matter

206440 Fluoranthene Polycyclic Organic Matter

129000 Pyrene Polycyclic Organic Matter

56553 Benz[a]Anthracene Polycyclic Organic Matter

218019 Chrysene Polycyclic Organic Matter

205992 Benzo[b]Fluoranthene Polycyclic Organic Matt er

207089 Benzo[k]Fluoranthene Polycyclic Organic Matt er

192972 Benzo[e]Pyrene Polycyclic Organic Matter

50328 Benzo[a]Pyrene Polycyclic Organic Matter

198550 Perylene Polycyclic Organic Matter

193395 Indeno[1,2,3-c,d]Pyrene Polycyclic Organic M atter

53703 Dibenzo[a,h]Anthracene Polycyclic Organic Mat ter

191242 Benzo[g,h,i,]Perylene Polycyclic Organic Mat ter

Dioxins and Furans

1746016 2,3,7,8-Tetrachlorodibenzo-p-Dioxin Dioxins /Furans as 2,3,7,8-TCDD TEQs

40321764 1,2,3,7,8-Pentachlorodibenzo-p-Dioxin Diox ins/Furans as 2,3,7,8-TCDD TEQs

39227286 1,2,3,4,7,8-Hexachlorodibenzo-p-Dioxin Dio xins/Furans as 2,3,7,8-TCDD TEQs

57653857 1,2,3,6,7,8-Hexachlorodibenzo-p-Dioxin Dio xins/Furans as 2,3,7,8-TCDD TEQs

19408743 1,2,3,7,8,9-Hexachlorodibenzo-p-Dioxin Dio xins/Furans as 2,3,7,8-TCDD TEQs

35822469 1,2,3,4,6,7,8-Heptachlorodibenzodioxin Dio xins/Furans as 2,3,7,8-TCDD TEQs

51207319 2,3,7,8-Tetrachlorodibenzofuran Dioxins/Fu rans as 2,3,7,8-TCDD TEQs

57117416 1,2,3,7,8-Pentachlorodibenzofuran Dioxins/ Furans as 2,3,7,8-TCDD TEQs

57117314 2,3,4,7,8-Pentachlorodibenzofuran Dioxins/ Furans as 2,3,7,8-TCDD TEQs

70648269 1,2,3,4,7,8-Hexachlorodibenzofuran Dioxins /Furans as 2,3,7,8-TCDD TEQs

57117449 1,2,3,6,7,8-Hexachlorodibenzofuran Dioxins /Furans as 2,3,7,8-TCDD TEQs

72918219 1,2,3,7,8,9-Hexachlorodibenzofuran Dioxins /Furans as 2,3,7,8-TCDD TEQs

60851345 2,3,4,6,7,8-Hexachlorodibenzofuran Dioxins /Furans as 2,3,7,8-TCDD TEQs

67562394 1,2,3,4,6,7,8-Heptachlorodibenzofuran Diox ins/Furans as 2,3,7,8-TCDD TEQs

55673897 1,2,3,4,7,8,9-Heptachlorodibenzofuran Diox ins/Furans as 2,3,7,8-TCDD TEQs

Polychlorinated Biphenyls

70362504 3,4,4',5-TCB (PCB-81) Polychlorinated Biph enyls (Aroclors)

32598133 3,3',4,4'-TCB (PCB-77) Polychlorinated Bip henyls (Aroclors)

65510443 2',3,4,4',5-PeCB (PCB-123) Polychlorinated Biphenyls (Aroclors)

31508006 2,3',4,4',5-PeCB (PCB-118) Polychlorinated Biphenyls (Aroclors)

74472370 2,3,4,4',5-PeCB (PCB-114) Polychlorinated Biphenyls (Aroclors)

32598144 2,3,3',4,4'-PeCB (PCB-105) Polychlorinated Biphenyls (Aroclors)

57465288 3,3',4,4',5-PeCB (PCB-126) Polychlorinated Biphenyls (Aroclors)

52663726 2,3',4,4',5,5'-HxCB (PCB-167) Polychlorina ted Biphenyls (Aroclors)

38380084 2,3,3',4,4',5/2,3,3',4,4',5-HxCB (PCBs-156 /157) Polychlorinated Biphenyls (Aroclors)

# 3 Table 1: Summary of Pollutant Categories

Code Pollutant Category

32774166 3,3',4,4',5,5'-HxCB (PCB-169) Polychlorina ted Biphenyls (Aroclors)

39635319 2,3,3',4,4',5,5'-HpCB (PCB-189) Polychlori nated Biphenyls (Aroclors)

Carbonyl Sulfide and Hydrogen Fluoride

463581 Carbonyl Sulfide Carbonyl Sulfide

7664393 Hydrogen Fluoride Hydrogen Fluoride (Hydrof luoric Acid)



# These pollutants are emitted from five emission pro cess groups at primary aluminum reduction facilitie s.

Table 2 lists the emissions process groups and thei r corresponding pollutant categories.

Table 2: Emission Process Groups

Emission Process

Group Source

Classification

Code Emission

Type Pollutant Type Emitted

Metals PAHs D/Fs PCBs COS HF

Potline Stack (controlled) 30300102,

30300113,

30300114,

30300116,

30300117 Stack Y Y Y Y Y Y

Potline Roof Vent 30300109,

30300118,

30300119,

30300120,

30300122 Area Y Y Y Y * Y

Anode Bake Furnace 30300105 Stack Y Y Y Y Y

Paste Plant 30300112 Stack Y Y Y Y

Pitch Storage Tank 30300123 Stack Y

* Assumed Zero



# Emissions data were developed for fourteen individu al facilitates. Table 3 details these facilities an d the

corresponding number of emission units in each emis sion process group.

Table 3: Summary of Facilities and Number of Proces s Group Emission Points

NEI Site ID Facility Name SubCategory Potline

Stack Potline

Roof

Vent Anode

Bake

Furnace Paste

Plant Pitch

Storage

Tank

NEI39458 Alcoa - Massena

West CWPB1 3 11 1 1 1

NEI32661 Alcoa - Warrick CWPB1 5 10 1 1 1

NEI42328 Alcoa - Wenatchee CWPB1 4 8 1 1 1

NEI41217 Alumax - Mt. Holly CWPB1 4 4 1 1 1

NEI34464 Noranda Aluminum CWPB1 4 3 3 1 1

NEI11365 Century Aluminum

- Sebree CWPB1 6 6 1 1 1

NEI6464 Alcoa - Rockdale CWPB2 45 10 1 1 0

# 4

Table 3: Summary of Facilities and Number of Proces s Group Emission Points

NEI Site ID Facility Name SubCategory Potline

Stack Potline

Roof

Vent Anode

Bake

Furnace Paste

Plant Pitch

Storage

Tank

NEI700 Century Aluminum

of WV CWPB2 1 1 1 1 1

NEIOH1110001 Ormet Primary

Aluminum CWPB2 6 24 0 0 0

NEIKY0912109

100004 Century Aluminum

of KY CWPB3 2 8 1 1 1

NEIWA19906 Intalco Aluminum SWPB 18 6 1 1 1

NEI46970 Alcoa - Massena

East HSS 2 4 0 0 0

NEI12468 Columbia Falls

Aluminum VSS2 10 10 0 1 1

NEI5988 Lake Charles

Carbon NA * 0 0 2 1 1

CWPB1 = Center-worked prebake one SWPB = Side-worke d prebake

CWPB2 = Center-worked prebake two HSS = Horizontal stud Soderberg

CWPB3 = Center-worked prebake three VSS2 = Vertical stud Soderberg 2

* NA = Not applicable. This facility only produces anodes and has no reduction cells



# II. Emissions Data Collection

In 2011, the EPA conducted an initial evaluation of the residual risk associated with the Primary

Aluminum Production source category. The results of that initial residual risk review were described i n

the preamble to the proposed amendments to the NESH AP on December 6, 2011 (76 FR 76260)

(referred to as the 2011 proposal). The comment per iod for the December 2011 proposal opened on

December 6, 2011, and ended on February 1, 2012. Th e EPA received significant comments from

industry representatives, environmental organizatio ns, and state regulatory agencies. After reviewing the

comments, and after consideration of additional dat a and information received since the 2011 proposal,

the EPA determined it was appropriate to revise som e of the analyses associated with that proposal and

to publish a supplemental proposal.

In support of the supplemental proposal, an informa tion request was sent by the EPA to owners of

currently operating primary aluminum reduction plan ts in March of 2013. The associated responses were

received in May through August 2013 and were utiliz ed in the development of the emissions data

described in this memorandum. Note that the perform ance test data presented in this memorandum are

the average of the run-by-run data provided by faci lities. In instances where an individual run was be low

detection limit (BDL), half of the detection limit was used in accordance with EPA guidance. If all ru ns

at all tested facilities for a particular pollutant [or, within a given subcategory in the case of ars enic,

cadmium and nickel testing on potline stacks and ro of vents, (see discussion in Section III.1.a, below )]

were BDL, the associated pollutant emissions were a ssumed to be zero. Run-by-run test data are not

presented in this document, but are available in th e test reports in the project docket (Docket ID No.

EPA-HQ-OAR-2011-0797).

COS emissions are not regulated under the 1997 NESH AP. Thus, COS emissions are not routinely

measured and limited COS emissions test data exist for this source category. The COS emissions

developed from emission factors used in the 2011 ri sk assessment form the basis of the best estimates

available for 2013 emissions.

# 5

III. Development of Emission Rates for Modeling

1. HAP Metals

a. Potline Stack and Potline Roof Vent

Emission factors in units of pounds per ton aluminu m produced (lb/ton Al) for speciated HAP metals

were developed using available performance test dat a. Tables 4 and 5 detail the facilities for which

performance test data were available and summarize the emission factors developed for this effort.

Potroom test data were available for 7 facilities. Emission factors (for all pollutants except arsenic

, cadmium, and nickel) for the remaining 6 facilities that are equipped with potlines were developed as

the average of the 7 test results for each pollutan t. For arsenic, cadmium, and nickel, emission facto rs

were based on averages of test results on a potline subcategory basis (as shown in Table 3). When only

one test report was available for potroom HAP metal emissions for a particular potroom subcategory,

these emission factors were applied to the other un its in the subcategory. Note that 13 of the 14 mode led

facilities have potrooms.

Chromium (VI) was measured at 2 facilities. The ave rage mass fraction of chromium (VI) (mass

chromium (VI) per mass total chromium) for these 2 facilities was determined as follows:

		
	h    
			
 =  1.55 × 10 



# 8.44 × 10  

# # +  3.71 × 10 



# 8.50 × 10 ' 

# #(

2 = 0.114

	*	h    
			
 =  1.26 × 10 '



# 1.23 × 10 , 

# # +  2.04 × 10 '



# 1.34	× 10 - 

# #(

2 = 0.0589

The average chromium (VI) mass fraction of these 2 facilities was applied to the total chromium values

for the remaining 11 facilities (5 with test result s, 6 with the average test result) to determine chr omium

(VI) emission factors in lb/ton aluminum. Chromium (III) for all 13 facilities was determined as the

difference between total chromium and chromium (VI)

.

Mercury (pollutant number 7439976) emission factors and emission rates reported in this memo were

modeled as three different species; elemental gaseo us mercury (pollutant 200), gaseous divalent mercur y

(pollutant 201) and particulate divalent mercury (p ollutant 202). Emission factors for total mercury w ere

multiplied by 0.80 for elemental gaseous mercury, 0 .10 for gaseous divalent mercury, and 0.10 for

particulate divalent mercury. The mercury speciatio n is based on mercury default speciation profiles f or

primary metal production. ( http://www.epa.gov/ttn/chief/net/2005inventory.html )6Table 4: Potline Stack HAP Metal Emission FactorsCASPollutantMassenaWestWarrickWenat-cheeAlumaxNorandaCentury(RTA)-SebreeOrmetCenturyof KYIntalcoMassenaEastCenturyof WVRockdaleColumbiaFallsLakeCharles(lb/tonAl)(lb/tonAl)(lb/tonAl)(lb/tonAl)(lb/tonAl)(lb/tonAl)(lb/tonAl)(lb/tonAl)(lb/tonAl)(lb/tonAl)(lb/tonAl)(lb/tonAl)(lb/ton Al)(lb/tonAl)7440360 Antimony 4.88E-05 4.88E-054.23E-053.48E-05 4.88E-051.61E-051.09E-045.78E-053.35E-054.85E-05 4.88E-05 4.88E-05 4.88E-05N/A7440382 Arsenic 2.11E-05 2.11E-051.68E-043.02E-05 2.11E-053.32E-053.44E-041.95E-040.00E+002.99E-04 3.44E-04 3.44E-04 2.99E-04N/A7440417 Beryllium 4.33E-05 4.33E-058.92E-075.17E-07 4.33E-051.03E-064.26E-062.84E-046.74E-071.21E-05 4.33E-05 4.33E-05 4.33E-05N/A7440439 Cadmium 1.82E-05 1.82E-054.43E-065.32E-05 1.82E-051.54E-060.00E+006.38E-056.32E-050.00E+00 0.00E+00 0.00E+00 0.00E+00N/ATotal Chrome 3.05E-04 3.05E-043.13E-048.44E-05 3.05E-041.24E-041.99E-044.58E-041.09E-048.50E-04 3.05E-04 3.05E-04 3.05E-04N/A16065831 Chromium III 2.71E-04 2.71E-04 2.78E-04 6.89E-05 2.71E-04 1.10E-04 1.77E-04 4.06E-04 9.70E-058.12E-04 2.71E-04 2.71E-04 2.71E-04N/A18540299 Chromium (VI) 3.48E-05 3.48E-05 3.57E-051.55E-05 3.48E-05 1.41E-05 2.27E-05 5.21E-05 1.25E-053.71E-05 3.48E-05 3.48E-05 3.48E-05N/A7440484 Cobalt 2.98E-05 2.98E-055.03E-061.63E-05 2.98E-051.94E-066.10E-056.22E-052.59E-053.61E-05 2.98E-05 2.98E-05 2.98E-05N/A7439921 Lead 6.25E-04 6.25E-041.21E-041.86E-04 6.25E-047.63E-061.93E-039.62E-048.36E-043.34E-04 6.25E-04 6.25E-04 6.25E-04N/A7439965 Manganese 8.79E-04 8.79E-042.14E-048.25E-05 8.79E-044.75E-053.96E-035.34E-046.73E-046.42E-04 8.79E-04 8.79E-04 8.79E-04N/A7440020 Nickel 2.88E-04 2.88E-046.56E-041.11E-04 2.88E-049.81E-057.54E-041.96E-032.01E-031.59E-03 7.54E-04 7.54E-04 1.59E-03N/A253Selenium &Compounds 1.27E-04 1.27E-048.86E-056.15E-05 1.27E-041.58E-054.89E-044.73E-056.71E-051.21E-04 1.27E-04 1.27E-04 1.27E-04N/ATotal Mercury (Hg) 7.14E-06 7.14E-066.26E-061.35E-05 7.14E-061.35E-068.70E-072.28E-051.95E-063.30E-06 7.14E-06 7.14E-06 7.14E-06N/A200Elemental GaseousHg 5.71E-06 5.71E-06 5.01E-06 1.08E-05 5.71E-06 1.08E-06 6.96E-07 1.82E-05 1.56E-06 2.64E-06 5.71E-065.71E-06 5.71E-06N/A201Gaseous DivalentHg 7.14E-07 7.14E-07 6.26E-07 1.35E-06 7.14E-07 1.35E-07 8.70E-08 2.28E-06 1.95E-07 3.30E-07 7.14E-077.14E-07 7.14E-07N/A202Particulate DivalentHg 7.14E-07 7.14E-07 6.26E-07 1.35E-06 7.14E-07 1.35E-07 8.70E-08 2.28E-06 1.95E-07 3.30E-07 7.14E-077.14E-07 7.14E-07N/A- Blue highlighted values are original informationcollection test results, all other values derived based on average of test results.- N/A - no applicable emission unit at facility.- Chromium (VI) mass fraction = 0.114.- The emission factors for total mercury (7439976)are multiplied by the default EPA mercury speciation factors of 0.80 for elemental gaseous mercury (200), 0.10 for gaseous divalent mercury (201),and 0.10 for particulate divalent mercury (202).7Table 5: Potline Roof Vent HAP Metal Emission FactorsCASPollutantMassenaWestWarrickWenat-cheeAlumaxNorandaCentury(RTA)-SebreeOrmetCenturyof KYIntalcoMassenaEastCenturyof WVRockdaleColumbiaFallsLakeCharles(lb/tonAl)(lb/tonAl)(lb/tonAl)(lb/tonAl)(lb/tonAl)(lb/tonAl)(lb/tonAl)(lb/tonAl)(lb/tonAl)(lb/tonAl)(lb/tonAl)(lb/tonAl)(lb/ton Al)(lb/tonAl)7440360 Antimony 1.97E-03 1.97E-031.60E-047.70E-04 1.97E-033.87E-041.17E-021.08E-044.06E-042.29E-04 1.97E-03 1.97E-03 1.97E-03N/A7440382 Arsenic 4.43E-03 4.43E-036.44E-035.70E-03 4.43E-031.17E-034.52E-032.23E-040.00E+007.25E-03 4.52E-03 4.52E-03 7.25E-03N/A7440417 Beryllium 1.11E-04 1.11E-041.52E-056.97E-06 1.11E-043.05E-047.60E-053.06E-048.07E-065.73E-05 1.11E-04 1.11E-04 1.11E-04N/A7440439 Cadmium 1.71E-04 1.71E-049.56E-052.51E-04 1.71E-041.66E-040.00E+009.38E-052.20E-032.07E-04 0.00E+00 0.00E+00 2.07E-04N/ATotal Chrome 3.08E-03 3.08E-032.24E-041.23E-03 3.08E-031.11E-031.78E-032.31E-031.51E-031.34E-02 3.08E-03 3.08E-03 3.08E-03N/A16065831 Chromium III 2.90E-03 2.90E-032.11E-04 1.10E-03 2.90E-03 1.04E-03 1.68E-03 2.18E-031.42E-03 1.32E-02 2.90E-03 2.90E-03 2.90E-03N/A18540299 Chromium (VI) 1.81E-04 1.81E-04 1.32E-051.26E-04 1.81E-04 6.54E-05 1.05E-04 1.36E-04 8.91E-052.04E-04 1.81E-04 1.81E-04 1.81E-04N/A7440484 Cobalt 6.55E-04 6.55E-044.78E-051.10E-04 6.55E-043.91E-053.00E-035.24E-044.61E-058.11E-04 6.55E-04 6.55E-04 6.55E-04N/A7439921 Lead 6.19E-03 6.19E-039.74E-047.38E-04 6.19E-033.51E-043.53E-021.51E-038.84E-043.64E-03 6.19E-03 6.19E-03 6.19E-03N/A7439965 Manganese 3.90E-03 3.90E-035.09E-041.42E-03 3.90E-033.80E-041.86E-037.52E-038.78E-036.84E-03 3.90E-03 3.90E-03 3.90E-03N/A7440020 Nickel 7.95E-03 7.95E-034.94E-038.82E-03 7.95E-031.01E-021.19E-022.36E-022.69E-034.83E-02 1.19E-02 1.19E-02 4.83E-02N/A253Selenium &Compounds 1.63E-03 1.63E-031.66E-041.02E-04 1.63E-031.66E-049.51E-038.20E-058.13E-045.73E-04 1.63E-03 1.63E-03 1.63E-03N/ATotal Mercury (Hg) 3.23E-05 3.23E-059.55E-064.61E-05 3.23E-051.31E-058.36E-078.82E-055.42E-051.41E-05 3.23E-05 3.23E-05 3.23E-05N/A200Elemental GaseousHg 2.58E-05 2.58E-05 7.64E-06 3.69E-05 2.58E-05 1.05E-05 6.69E-07 7.06E-05 4.34E-05 1.13E-05 2.58E-052.58E-05 2.58E-05N/A201Gaseous DivalentHg 3.23E-06 3.23E-06 9.55E-07 4.61E-06 3.23E-06 1.31E-06 8.36E-08 8.82E-06 5.42E-06 1.41E-06 3.23E-063.23E-06 3.23E-06N/A202Particulate DivalentHg 3.23E-06 3.23E-06 9.55E-07 4.61E-06 3.23E-06 1.31E-06 8.36E-08 8.82E-06 5.42E-06 1.41E-06 3.23E-063.23E-06 3.23E-06N/A- Blue highlighted values are original informationcollection test results, all other values derived based on average of test results.- N/A - no applicable emission unit at facility.- Chromium (VI) mass fraction = 0.0589.- The emission factors for total mercury (7439976)are multiplied by the default EPA mercury speciation factors of 0.80 for elemental gaseous mercury (200), 0.10 for gaseous divalent mercury (201),and 0.10 for particulate divalent mercury (202)

# 8

Emission rates in units of tons pollutant per year (ton/yr) on an individual emission point basis were

developed by multiplying the emission factor (lb/to n Al) of a pollutant by the associated facility’s

aluminum production capacity and then dividing by t he number of emission release points at the facilit y,

as shown:/			r
	1	1	 2 345	647783953

:;9< 

# = = 	>
 2 7?	647783953

345	978@A58@ 

# = × B
1
C	 2 345	978@A58@

:;9< 

# = ×

Conversion	 2 K	LMN

-	OP 

# = ÷ number	of	emission	units

Emission rates were then applied to each emission p oint at a facility (e.g., all potline stack release points

at a particular facility were assigned the same emi ssion rate). Table 6 details the aluminum and green

anode production capacities used in the development of this data set. Appendix A contains the emission

rates developed from these factors.

Table 6: Summary of Aluminum and Anode Production C apacities in 2013

NEI Site ID Facility Name Aluminum Production

Capacity (tons/yr) Anode Production

Capacity (tons/yr)

NEI39458 Alcoa - Massena West 143,300 81,681

NEI32661 Alcoa - Warrick 295,900 168,663

NEI42328 Alcoa - Wenatchee 202,800 115,596

NEI41217 Alumax - Mt. Holly 246,900 140,733

NEI34464 Noranda Aluminum 304,700 173,679

NEI11365 Century Aluminum (RTA) -

Sebree 216,100 123,177

NEIOH1110001 Ormet Primary Aluminum 292,100 0

NEIKY091210910

0004 Century Aluminum of KY 269,000 153,330

NEIWA19906 Intalco Aluminum 306,400 174,648

NEI46970 Alcoa - Massena East 91,867 0

NEI700 Century Aluminum of WV 187,400 106,818

NEI6464 Alcoa - Rockdale 208,550 118,874

NEI12468 Columbia Falls Aluminum 148,160 84,451

NEI5988 Lake Charles Carbon 0 150,000

- Alcoa - Massena East - Corrected production capac ity is 2/3 of original production capacity because this facility

permanently shut down and dismantled one of its thr ee potlines in September of 2013. The remaining two Soderberg

potlines at this facility were permanently shut dow n in March of 2013. Alcoa (the owner of this facili ty) has not yet

decided whether to shut down the entire facility or to install and operate prebake potlines.

- Columbia Falls Aluminum - Corrected production ca pacity is 4/5 of original production capacity based on available

operational data from January of 2000 to the presen t. This facility has been idle since 2009, and havi ng inefficient

Soderberg technology is not expected to reopen in i ts present configuration.

- For anode production, 0 anode production capacity at Ormet does not indicate 0 anode consumption in aluminum

production but rather that the facility, prior to i ts shutdown in October of 2013, obtained its anodes from an offsite

vendor as opposed to producing anodes on site. Simi larly, the Alcoa-Massena East facility, prior to sh utting down its

potlines in March of 2014, obtained its anode mater ial from an offsite vendor.

- The Ormet Primary Aluminum facility has been idle since October of 2013 and currently is in bankrupt cy proceedings.

The Alcoa-Rockdale and Century Aluminum of West Vir ginia facilities are presently idle but are expecte d to resume

operations once market conditions improve.

# 9 b. Anode Bake Furnace and Paste Plant

Emissions factors in units of pounds per ton green anode (lb/ton anode) for speciated HAP metals were

developed using available performance test data. Ta bles 7 and 8 identify the facilities for which

performance test data were available and summarize the emission factors developed. Anode bake

furnace and paste plant test data were available fo r 3 facilities. Emission factors for the remaining

prebake facilities that are equipped with anode bak e furnaces and that are currently performing the on

site production of anodes in paste plants were deve loped as the average of the 3 test results for each

pollutant.

Chromium (VI) was determined at 1 facility. The ave rage mass fraction of chromium (VI) (i.e., mass

chromium (VI) per mass total chromium) for the anod e bake furnace and the paste plant at this facility

was determined as follows:

W
	>
	
	h    
			
 = 1.25 × 10 



# 1.98 × 10  

# = 0.631


		
	h    
			
 = 6.38 × 10 X



# 2.12 × 10 Y 

# = 0.301

The respective chromium (VI) mass fraction was appl ied to the total chromium values for the remaining

facilities to determine chromium (VI) emission fact ors in lb/ton green anode. Chromium (III) for all

facilities was determined as the difference between total chromium and chromium (VI).

Emission rates in units of tons pollutant per year (ton/yr) on an individual emission release point ba sis

were developed by multiplying the emission factor ( lb/ton anode) of a pollutant by the associated

facility’s anode production capacity and then divid ing by the number of emission release points at the

facility, as shown:/			r
	1	1 2 345	647783953

:;9< 

# = = 	>
 2 7?	647783953

345	954Z; 

# = × B
1
C	 2 345	954Z;

:;9< 

# = ×

Conversion	 2 K	LMN

-	OP 

# = ÷ number	of	emission	points

Emission rates were then applied to each emission p oint at a facility (e.g., all anode bake furnace st ack

release points at a particular facility have the sa me emission rate). Appendix A contains the emission

rates developed from these factors.10Table 7: Anode Bake Furnace HAP Metal Emission FactorsCASPollutantMassenaWestWarrickWenat-cheeAlumaxNorandaCentury(RTA) -SebreeOrmetCenturyof KYIntalcoMassenaEastCenturyof WVRockdaleColumbiaFallsLakeCharles(lb/tonanode)(lb/tonanode)(lb/tonanode)(lb/tonanode)(lb/tonanode)(lb/tonanode)(lb/tonanode)(lb/tonanode)(lb/tonanode)(lb/tonanode)(lb/tonanode)(lb/tonanode)(lb/tonanode)(lb/tonanode)7440360 Antimony 2.98E-06 2.98E-064.74E-061.56E-06 2.98E-062.64E-06 N/A 2.98E-06 2.98E-06 N/A 2.98E-06 2.98E-06 N/A 2.98E-067440382 Arsenic 5.27E-06 5.27E-069.49E-062.67E-06 5.27E-063.64E-06 N/A 5.27E-06 5.27E-06 N/A 5.27E-06 5.27E-06 N/A 5.27E-067440417 Beryllium 8.71E-08 8.71E-089.54E-083.48E-08 8.71E-081.31E-07 N/A 8.71E-08 8.71E-08 N/A 8.71E-08 8.71E-08 N/A 8.71E-087440439 Cadmium 3.03E-06 3.03E-064.74E-077.54E-06 3.03E-061.07E-06 N/A 3.03E-06 3.03E-06 N/A 3.03E-06 3.03E-06 N/A 3.03E-06Total Chrome 1.94E-05 1.94E-052.84E-051.98E-05 1.94E-051.00E-05 N/A 1.94E-05 1.94E-05 N/A 1.94E-05 1.94E-05 N/A 1.94E-0516065831 Chromium III 7.17E-06 7.17E-06 1.05E-05 7.30E-06 7.17E-06 3.69E-06 N/A 7.17E-06 7.17E-06 N/A7.17E-06 7.17E-06 N/A 7.17E-0618540299 Chromium (VI) 1.22E-05 1.22E-05 1.79E-051.25E-05 1.22E-05 6.31E-06 N/A 1.22E-05 1.22E-05 N/A 1.22E-05 1.22E-05 N/A 1.22E-057440484 Cobalt 2.74E-06 2.74E-065.73E-062.03E-06 2.74E-064.76E-07 N/A 2.74E-06 2.74E-06 N/A 2.74E-06 2.74E-06 N/A 2.74E-067439921 Lead 9.25E-06 9.25E-064.74E-061.68E-05 9.25E-066.19E-06 N/A 9.25E-06 9.25E-06 N/A 9.25E-06 9.25E-06 N/A 9.25E-067439965 Manganese 3.43E-05 3.43E-052.19E-057.45E-05 3.43E-056.48E-06 N/A 3.43E-05 3.43E-05 N/A 3.43E-05 3.43E-05 N/A 3.43E-057440020 Nickel 1.92E-05 1.92E-053.52E-051.86E-05 1.92E-053.65E-06 N/A 1.92E-05 1.92E-05 N/A 1.92E-05 1.92E-05 N/A 1.92E-05253Selenium &Compounds 3.01E-05 3.01E-059.49E-067.67E-05 3.01E-054.22E-06 N/A 3.01E-05 3.01E-05 N/A 3.01E-05 3.01E-05 N/A 3.01E-05Total Mercury (Hg) 1.48E-05 1.48E-053.39E-051.05E-05 1.48E-051.29E-07 N/A 1.48E-05 1.48E-05 N/A 1.48E-05 1.48E-05 N/A 1.48E-05200Elemental GaseousHg 1.18E-05 1.18E-05 2.71E-05 8.40E-06 1.18E-05 1.03E-07 N/A 1.18E-05 1.18E-05 N/A 1.18E-05 1.18E-05 N/A 1.18E-05201Gaseous DivalentHg 1.48E-06 1.48E-06 3.39E-06 1.05E-06 1.48E-06 1.29E-08 N/A 1.48E-06 1.48E-06 N/A 1.48E-06 1.48E-06 N/A 1.48E-06202Particulate DivalentHg 1.48E-06 1.48E-06 3.39E-06 1.05E-06 1.48E-06 1.29E-08 N/A 1.48E-06 1.48E-06 N/A 1.48E-06 1.48E-06 N/A 1.48E-06- Blue highlighted values are original informationrequest test results, all other values derived based on average of test results.- N/A - no applicable emission unit at facility.- Chromium (VI) mass fraction = 0.631.- The emission factors for total mercury (7439976)are multiplied by the default EPA mercury speciation factors of 0.80 for elemental gaseous mercury (200), 0.10 for gaseous divalent mercury (201),and 0.10 for particulate divalent mercury (202).11Table 8: Paste Plant HAP Metal Emission FactorsCASPollutantMassenaWestWarrickWenat-cheeAlumaxNorandaCentury(RTA) -SebreeOrmetCenturyof KYIntalcoMassenaEastCenturyof WVRockdaleColumbiaFallsLakeCharles(lb/tonanode)(lb/tonanode)(lb/tonanode)(lb/tonanode)(lb/tonanode)(lb/tonanode)(lb/tonanode)(lb/tonanode)(lb/tonanode)(lb/tonanode)(lb/tonanode)(lb/tonanode)(lb/tonanode)(lb/tonanode)7440360 Antimony 1.00E-06 1.00E-066.44E-072.50E-07 1.00E-062.12E-06 N/A 1.00E-06 1.00E-06 N/A 1.00E-06 1.00E-06 1.00E-06 1.00E-067440382 Arsenic 1.85E-06 1.85E-061.42E-061.89E-07 1.85E-063.93E-06 N/A 1.85E-06 1.85E-06 N/A 1.85E-06 1.85E-06 1.85E-06 1.85E-067440417 Beryllium 2.54E-08 2.54E-081.44E-083.61E-09 2.54E-085.83E-08 N/A 2.54E-08 2.54E-08 N/A 2.54E-08 2.54E-08 2.54E-08 2.54E-087440439 Cadmium 5.16E-07 5.16E-077.13E-081.41E-06 5.16E-076.13E-08 N/A 5.16E-07 5.16E-07 N/A 5.16E-07 5.16E-07 5.16E-07 5.16E-07Total Chrome 7.90E-06 7.90E-063.48E-062.12E-06 7.90E-061.81E-05 N/A 7.90E-06 7.90E-06 N/A 7.90E-06 7.90E-06 7.90E-06 7.90E-0616065831 Chromium III 5.52E-06 5.52E-06 2.43E-06 1.48E-06 5.52E-06 1.27E-05 N/A 5.52E-06 5.52E-06 N/A5.52E-06 5.52E-06 5.52E-06 5.52E-0618540299 Chromium (VI) 2.38E-06 2.38E-06 1.05E-066.38E-07 2.38E-06 5.45E-06 N/A 2.38E-06 2.38E-06 N/A 2.38E-06 2.38E-06 2.38E-06 2.38E-067440484 Cobalt 2.57E-07 2.57E-075.67E-083.67E-07 2.57E-073.48E-07 N/A 2.57E-07 2.57E-07 N/A 2.57E-07 2.57E-07 2.57E-07 2.57E-077439921 Lead 1.85E-06 1.85E-063.36E-061.29E-06 1.85E-069.10E-07 N/A 1.85E-06 1.85E-06 N/A 1.85E-06 1.85E-06 1.85E-06 1.85E-067439965 Manganese 1.21E-05 1.21E-053.06E-062.75E-06 1.21E-053.04E-05 N/A 1.21E-05 1.21E-05 N/A 1.21E-05 1.21E-05 1.21E-05 1.21E-057440020 Nickel 3.91E-06 3.91E-064.38E-063.45E-06 3.91E-063.89E-06 N/A 3.91E-06 3.91E-06 N/A 3.91E-06 3.91E-06 3.91E-06 3.91E-06253Selenium &Compounds 1.23E-06 1.23E-061.42E-061.14E-07 1.23E-062.14E-06 N/A 1.23E-06 1.23E-06 N/A 1.23E-06 1.23E-06 1.23E-06 1.23E-06Total Mercury (Hg) 1.05E-07 1.05E-078.68E-081.21E-07 1.05E-071.07E-07 N/A 1.05E-07 1.05E-07 N/A 1.05E-07 1.05E-07 1.05E-07 1.05E-07200Elemental GaseousHg 8.40E-08 8.40E-08 6.94E-08 9.68E-08 8.40E-08 8.56E-08 N/A 8.40E-08 8.40E-08 N/A 8.40E-08 8.40E-08 8.40E-08 8.40E-08201Gaseous DivalentHg 1.05E-08 1.05E-08 8.68E-09 1.21E-08 1.05E-08 1.07E-08 N/A 1.05E-08 1.05E-08 N/A 1.05E-08 1.05E-08 1.05E-08 1.05E-08202Particulate DivalentHg 1.05E-08 1.05E-08 8.68E-09 1.21E-08 1.05E-08 1.07E-08 N/A 1.05E-08 1.05E-08 N/A 1.05E-08 1.05E-08 1.05E-08 1.05E-08- Blue highlighted values are original informationrequest test results, all other values derived based on average of test results.- N/A - no applicable emission unit at facility.- Columbia Falls Aluminum Company is not in operation. Allowable emissions estimates (equal to estimated actual emissions) are provided above, actual andacute emissions were modeled as zero.- Chromium (VI) mass fraction = 0.301.- The emission factors for total mercury (7439976)are multiplied by the default EPA mercury speciation factors of 0.80 for elemental gaseous mercury (200), 0.10 for gaseous divalent mercury (201),and 0.10 for particulate divalent mercury (202).

# 12

2. Polychlorinated Biphenyls, Polycyclic Aromatic Hydr ocarbons, and Dioxins/Furans.

a. Potline Stack, Potline Roof Vent, Anode Bake Furnac e and Paste Plant

Emission factors in units of pounds per ton aluminu m produced (lb/ton Al) and pounds per ton of green

anode (lb/ton anode) for speciated PCB, PAH, and D/ F were developed using available performance test

data. Table 9 details the facilities for which perf ormance test data were available and summarizes the

emission factors developed for this effort. Potroom stack and roof vent test data were available for 2

facilities (Noranda and Massena East).

Noranda utilizes prebake type reduction cells. Test results from Noranda potrooms were applied to all

other facilities that utilize prebake type reductio n cells. Two test results were available for potlin e

stacks, and two test results were available for pot line roof vents. The average of these two respectiv e test

sets was utilized as the emission factor.

Massena East utilizes Soderberg type reduction cell s. Test results from Massena East potrooms were

applied to the other Soderberg facility (i.e., Colu mbia Falls). Two test results were available for po tline

stacks, and two test results were available for pot line roof vents. The average of these two respectiv e test

sets was utilized as the emission factor.

Test results for anode bake furnaces and paste plan ts were only available from 1 facility (Noranda). T est

results from the Noranda bake furnace and paste pla nt were applied to all other facilities, as applica ble.

Emission rates in units of tons pollutant per year (ton/yr) on an individual emission release point ba sis

were developed by multiplying the emission factor ( lb/ton anode or lb/ton Al, as applicable) of a

pollutant by the associated facility’s aluminum or anode production capacity, as applicable, and then

dividing by the number of emission points at the fa cility, as shown:/			r
	1	1 2 345	647783953

:;9< 

# = = 	>
 2 7?	647783953

345	\969\A3: 

# = × B
1
C	 2 345	\969\A3:

:;9< 

# = ×

B*		 2 K	345

-	7? 

# = ÷ ]					1

Emission rates are then applied to each emission po int at a facility. Appendix A contains the emission

rates developed from these factors.13Table 9: Organic Emission FactorsCASPollutantNoranda Test DataMassena East Test Data(SPPD_FAC_10)Potline Stack Test ResultsPotline Roof Vent Test ResultsAnodeBakeFurnacePastePlantPotlineStack TestResultsPotlineRoof VentTestResultsPotroom 2duct161 DuctAverageRoof #2Roof #3Average(lb/ton Al)(lb/ton Al)(lb/ton Al)(lb/ton Al)(lb/ton Al)(lb/ton Al)(lb/tonanode)(lb/tonanode)(lb/ton Al)(lb/ton Al)Polychlorinated Biphenyls70362504 3,4,4',5-TCB (PCB-81) 1.47E-10 1.87E-10 1.67E-10 4.88E-09 2.80E-09 3.84E-09 6.22E-11 4.01E-111.76E-09 1.66E-0832598133 3,3',4,4'-TCB (PCB-77) 9.25E-10 4.25E-10 6.75E-10 3.08E-08 1.13E-08 2.10E-08 1.52E-10 4.15E-11 1.51E-08 1.74E-0765510443 2',3,4,4',5-PeCB (PCB-123) 1.52E-10 1.35E-10 1.44E-10 6.10E-09 6.26E-09 6.18E-09 3.73E-11 2.13E-11 1.37E-09 1.66E-0831508006 2,3',4,4',5-PeCB (PCB-118) 1.37E-08 2.88E-09 8.31E-09 5.04E-07 3.58E-08 2.70E-07 9.56E-10 2.71E-11 5.68E-08 7.37E-0774472370 2,3,4,4',5-PeCB (PCB-114) 6.41E-10 1.38E-10 3.89E-10 1.61E-08 3.17E-09 9.65E-09 3.58E-11 2.01E-11 1.76E-09 2.21E-0832598144 2,3,3',4,4'-PeCB (PCB-105) 4.72E-09 1.23E-09 2.98E-09 1.48E-07 6.63E-09 7.72E-08 4.06E-10 2.05E-11 2.22E-08 2.94E-0757465288 3,3',4,4',5-PeCB (PCB-126) 1.54E-10 1.45E-10 1.50E-10 5.72E-09 3.28E-09 4.50E-09 3.64E-11 1.93E-11 1.40E-09 2.19E-0852663726 2,3',4,4',5,5'-HxCB (PCB-167) 8.55E-10 1.68E-10 5.12E-10 1.79E-08 2.04E-09 9.99E-09 4.47E-111.18E-11 1.48E-09 1.35E-0838380084 2,3,3',4,4',5/2,3,3',4,4',5-HxCB (PCBs-156/157) 1.24E-09 2.06E-10 7.25E-10 5.11E-08 2.48E-092.68E-08 4.66E-11 1.48E-11 3.95E-09 3.87E-0832774166 3,3',4,4',5,5'-HxCB (PCB-169) 9.77E-11 1.65E-10 1.31E-10 2.42E-09 1.85E-09 2.14E-09 4.05E-111.38E-11 2.09E-10 3.47E-0939635319 2,3,3',4,4',5,5'-HpCB (PCB-189) 2.12E-10 1.59E-10 1.85E-10 7.43E-09 2.25E-09 4.84E-09 3.37E-11 1.12E-11 2.45E-10 3.29E-09Polycyclic Aromatic Hydrocarbons91203 Naphthalene 8.07E-05 2.57E-04 1.69E-04 2.62E-03 1.35E-03 1.98E-03 5.18E-03 1.62E-04 3.48E-02 1.96E-0291576 2-Methylnaphthalene 1.35E-06 2.52E-06 1.93E-06 2.35E-04 1.40E-04 1.88E-04 7.46E-04 6.42E-05 1.45E-02 1.34E-0283329 Acenaphthene 1.16E-06 4.04E-06 2.60E-06 1.84E-04 2.23E-04 2.04E-04 3.29E-05 2.43E-03 3.25E-02 2.82E-02208968 Acenaphthylene 2.17E-07 7.01E-07 4.59E-07 6.71E-06 7.27E-06 6.99E-06 2.32E-04 4.15E-06 6.20E-032.25E-0386737 Fluorene3.97E-06 2.99E-06 3.48E-06 1.26E-04 5.26E-05 8.92E-05 1.12E-04 3.11E-04 6.56E-03 5.19E-0385018 Phenanthrene 5.06E-06 1.52E-05 1.01E-05 1.84E-04 2.22E-04 2.03E-04 3.28E-03 9.27E-04 1.50E-02 4.00E-02120127 Anthracene5.21E-07 2.43E-06 1.48E-06 1.41E-05 2.85E-05 2.13E-05 2.81E-05 7.13E-05 5.31E-04 4.48E-03206440 Fluoranthene 2.79E-06 3.07E-06 2.93E-06 1.70E-04 2.14E-04 1.92E-04 4.67E-03 6.53E-05 7.20E-03 5.82E-02129000 Pyrene1.66E-06 1.48E-06 1.57E-06 3.44E-05 7.59E-05 5.52E-05 3.97E-06 3.49E-05 1.98E-03 1.39E-0256553 Benz[a]Anthracene 4.35E-07 2.36E-07 3.36E-071.20E-05 3.54E-06 7.77E-06 2.98E-06 4.01E-07 9.14E-05 7.14E-03218019 Chrysene7.06E-07 4.75E-07 5.90E-07 7.46E-05 1.33E-05 4.40E-05 3.83E-04 6.98E-09 5.79E-04 2.11E-02205992 Benzo[b]Fluoranthene 8.26E-07 4.37E-07 6.31E-07 6.01E-05 8.53E-06 3.43E-05 2.94E-04 1.70E-07 4.31E-04 2.59E-02207089 Benzo[k]Fluoranthene 3.04E-07 2.21E-07 2.63E-07 1.21E-05 3.17E-06 7.65E-06 1.04E-05 5.25E-08 2.09E-04 9.88E-0314Table 9: Organic Emission FactorsCASPollutantNoranda Test DataMassena East Test Data(SPPD_FAC_10)Potline Stack Test ResultsPotline Roof Vent Test ResultsAnodeBakeFurnacePastePlantPotlineStack TestResultsPotlineRoof VentTestResultsPotroom 2duct161 DuctAverageRoof #2Roof #3Average(lb/ton Al)(lb/ton Al)(lb/ton Al)(lb/ton Al)(lb/ton Al)(lb/ton Al)(lb/tonanode)(lb/tonanode)(lb/ton Al)(lb/ton Al)192972 Benzo[e]Pyrene 6.90E-07 4.15E-07 5.53E-07 2.32E-05 4.50E-06 1.39E-05 1.54E-05 8.34E-08 2.64E-041.40E-0250328 Benzo[a]Pyrene 3.69E-07 1.45E-07 2.57E-07 2.48E-06 2.11E-06 2.30E-06 7.13E-07 5.31E-08 6.81E-053.58E-03198550 Perylene1.59E-07 1.27E-07 1.43E-07 2.07E-06 1.35E-06 1.71E-06 2.28E-07 1.05E-08 2.01E-05 8.46E-04193395 Indeno[1,2,3-c,d]Pyrene 3.25E-07 2.98E-07 3.11E-07 6.94E-06 3.40E-06 5.17E-06 3.18E-06 1.55E-089.15E-05 4.38E-0353703 Dibenzo[a,h]Anthracene 1.69E-07 3.18E-07 2.44E-07 5.52E-06 3.48E-06 4.50E-06 2.33E-06 6.98E-09 2.42E-05 1.33E-03191242 Benzo[g,h,i,]Perylene 5.00E-07 2.99E-07 3.99E-07 9.11E-06 5.21E-06 7.16E-06 1.18E-06 1.49E-08 1.41E-04 5.39E-03Dioxins and Furans1746016 2,3,7,8-Tetrachlorodibenzo-p-Dioxin 1.96E-11 5.44E-11 3.70E-11 7.33E-10 6.73E-10 7.03E-10 2.04E-11 5.06E-13 9.79E-11 1.08E-0940321764 1,2,3,7,8-Pentachlorodibenzo-p-Dioxin 2.14E-11 5.52E-11 3.83E-11 5.35E-10 6.60E-10 5.98E-10 1.56E-11 4.80E-13 1.07E-10 2.05E-0939227286 1,2,3,4,7,8-Hexachlorodibenzo-p-Dioxin 1.93E-12 5.36E-12 3.64E-12 6.67E-11 5.20E-11 5.94E-117.65E-13 3.28E-14 1.18E-10 1.62E-0957653857 1,2,3,6,7,8-Hexachlorodibenzo-p-Dioxin 2.44E-12 3.80E-12 3.12E-12 1.64E-10 7.32E-11 1.19E-106.43E-13 5.12E-14 1.22E-10 1.60E-0919408743 1,2,3,7,8,9-Hexachlorodibenzo-p-Dioxin 2.08E-12 9.66E-12 5.87E-12 1.44E-10 8.33E-11 1.14E-108.54E-13 3.46E-14 1.60E-10 1.98E-0935822469 1,2,3,4,6,7,8-Heptachlorodibenzodioxin 1.43E-12 1.13E-12 1.28E-12 6.19E-11 4.95E-11 5.57E-117.62E-13 6.92E-15 3.20E-10 8.59E-0951207319 2,3,7,8-Tetrachlorodibenzofuran 1.48E-11 1.52E-11 1.50E-11 2.23E-10 1.14E-10 1.68E-10 3.36E-12 3.00E-14 7.87E-10 1.48E-0857117416 1,2,3,7,8-Pentachlorodibenzofuran 1.82E-123.57E-12 2.70E-12 8.50E-11 4.68E-11 6.59E-11 3.99E-13 1.91E-14 3.42E-10 8.70E-0957117314 2,3,4,7,8-Pentachlorodibenzofuran 1.07E-111.16E-11 1.12E-11 2.50E-10 1.96E-10 2.23E-10 3.03E-12 6.74E-14 1.46E-09 1.75E-0870648269 1,2,3,4,7,8-Hexachlorodibenzofuran 1.86E-12 6.85E-12 4.36E-12 7.86E-11 6.78E-11 7.32E-11 8.06E-13 3.18E-14 5.24E-10 1.14E-0857117449 1,2,3,6,7,8-Hexachlorodibenzofuran 2.41E-12 3.57E-12 2.99E-12 1.11E-10 7.57E-11 9.32E-11 8.10E-13 3.61E-14 2.65E-10 9.68E-0972918219 1,2,3,7,8,9-Hexachlorodibenzofuran 1.56E-12 5.47E-12 3.52E-12 8.09E-11 1.18E-10 9.96E-11 1.04E-12 3.09E-14 9.31E-11 5.95E-1060851345 2,3,4,6,7,8-Hexachlorodibenzofuran 3.01E-12 4.68E-12 3.85E-12 9.65E-11 1.14E-10 1.05E-10 2.59E-12 4.79E-14 1.78E-10 8.67E-0967562394 1,2,3,4,6,7,8-Heptachlorodibenzofuran 3.25E-13 1.44E-12 8.80E-13 2.85E-11 3.98E-11 3.42E-11 3.57E-13 2.81E-15 9.04E-10 4.27E-0855673897 1,2,3,4,7,8,9-Heptachlorodibenzofuran 2.14E-13 5.66E-13 3.90E-13 2.07E-11 9.68E-12 1.52E-11 1.23E-13 3.75E-15 1.07E-10 6.62E-09

# 15 b. Pitch Storage Tanks

Emissions for speciated PAH were developed using av ailable PAH performance test data from Massena

East potroom vents in conjunction with a series of engineering assumptions and unit conversions. The

first step in determining the pitch storage tank PA H emissions was to estimate the volume of gas

displaced annually from pitch tanks (i.e., the work ing losses of the tanks). As a general approximatio n, it

was assumed that the volume of pitch added to the t ank equals the volume of gas displaced as the tank is

filled, as shown: ^	1
_	`
		  	1h

C # = a	B
1
C  	a

C # × 0.57  	`	
_

	a #

× 0.22  	1h

	`	
_ # ×  2000	]	1h

	1h # × b 1

78 c  	1h

]	1h #

Where:

 Assumed cubic feet (cu ft) pitch added to tank is e qual to cu ft gas displaced from tank.

 Green anode produced per ton of aluminum for bake f urnace and paste plant = 0.57 (ton

green anode/ton aluminum), (the industry average va lue provided by The Aluminum

Association).

 Green anode paste consists of 22% (0.22) pitch and 78% petroleum coke. 1



#  Density of pitch 2 

# = 78 (lb/cu ft); based on pitch specific gravity o f 1.25.

The next step is to approximate the hydrocarbon con tent of the displaced gas (i.e., what portion of th e

displaced gas contains volatile hydrocarbon) and th en speciate that volatile portion of the displaced gas

using PAH mass fractions. PAH mass fractions were d eveloped from Massena East potline roof vent

performance test data, as shown in Table 10. Specia ted pitch storage tank PAH emissions are

approximated as follows:ad					  

C # = _	1
_	`
		  	1h	`

C # × 0.0034  		hC_
]

		1h	` # ×

b 1

359 c  ] ∙ 	hC_
]

		hC_
] # × f 
			
 g  ]  ⁄

]  ⁄ ( × 
	i`h	  ]

] ∙  # ×

× 1
	*		 b 273

423 c × b 1

2000 c  

] #

Where:

 0.0034 = approximated percent volume of hydrocarbon in pitch gas based on calculated

vapor pressure of oxidized asphalt at 300 degrees F ahrenheit (assumed to approximate

pitch at that temperature, based on available data) of 0.0034 atmospheres (0.34 percent).

 1 lb mole of ideal gas at standard temperature and pressure occupies 359 cu ft.

 Mass fractions shown in Table 10. Assumed that spec iation profile of Massena East roof

vent PAH performance test report is similar to the speciation of the volatile portion of the

displaced pitch gas.

 Molecular weight of each PAH constituent is used to speciate total PAH.

 Temperature conversion accounts for gas temperature of 150°C

# 16 Table 10: Summary of Pitch Storage Tank Vapor Emiss ions a



# CAS Pollutant Molecular

Weight Massena East

Potline Vent

Emissions

Rate Estimated

Mole Fraction

in Organic

Vapors (lb/lb.mol) (lb/ton Al)



# 91203 Naphthalene 128.17 1.96E-02 1.40E-02

91576 2-Methylnaphthalene 142.20 1.34E-02 9.60E-03

83329 Acenaphthene 154.21 2.82E-02 2.02E-02

208968 Acenaphthylene 152.19 2.25E-03 1.61E-03

86737 Fluorene 166.22 5.19E-03 3.70E-03

85018 Phenanthrene 178.23 4.00E-02 2.86E-02

120127 Anthracene 178.23 4.48E-03 3.20E-03

206440 Fluoranthene 202.26 5.82E-02 4.16E-02

129000 Pyrene 202.25 1.39E-02 9.93E-03

56553 Benz[a]anthracene 228.29 7.14E-03 5.10E-03

218019 Chrysene 228.28 2.11E-02 1.51E-02

205992 Benzo[b]fluoranthene 252.31 2.59E-02 1.85E-0 2

207089 Benzo[k]fluoranthene 252.31 9.88E-03 7.06E-0 3

192972 Benzo[e]pyrene 252.31 1.40E-02 9.98E-03

50328 Benzo[a]pyrene 252.31 3.58E-03 2.56E-03

198550 Perylene 252.31 8.46E-04 6.04E-04

193395 Indeno[1,2,3-c,d]Pyrene 276.33 4.38E-03 3.13 E-03

53703 Dibenzo[a,h]anthracene 278.35 1.33E-03 9.49E- 04

191242 Benzo[g,h,i,]Perylene 276.33 5.39E-03 3.85E- 03

a 

# Developed from Massena East potline vent emissions test data, based on emission rate of 1.95 E-05 lbmoles hydrocarbon/ton Al produced.



# Appendix A contains the emission rates developed fo r pitch storage tanks.

3. Hydrogen Fluoride and Carbonyl Sulfide

a. Potline Stack, Potline Roof Vent and Anode Bake Fur nace

COS emission rates were taken directly from the 201 1 modeling effort (see docket item EPA-HQ-OAR2011-0797-0146) and are summarized in Appendix A. T hat is, since we have not obtained any new COS

emissions data since the 2011 proposal and since th e facilities’ production capacities have not change d

since the 2011 proposal, the 2011 emission factors form the basis for the best estimate of the emissio n

rates in 2013, which are identical to those used in the 2011 proposal.

Emission factors in units of pounds per ton capacit y (aluminum or anode) (lb/ton) for HF were based on

available performance test data. When performance t est data were not available, actual HF emission

factors were derived based on total fluoride (TF) l imits. In these cases, the TF potroom limit was

apportioned to potline stacks (10%) and potline roo f vents (90%) consistent with facilities for which

data were available. Then, the allowable HF emissio n factors (derived from TF) were estimated to be

50% of the allowable TF limit, and the actual HF em ission factors were estimated to be 2/3 of the

# 17

allowable HF emission factor. Table 11 identifies t he facilities for which performance test data were

available and summarizes the emission factors devel oped for this effort.

Emission rates in units of ton/yr on an individual emission unit basis were developed by multiplying t he

emission factor (lb/ton capacity) of a pollutant by the associated facility’s aluminum or anode

production capacity and then dividing by number of emission points at the facility, as shown:/			r
	1	1 2 345	647783953

:;9< 

# = = 	>
 2 7?	647783953

345	\969\A3: 

# = × B
1
C	 2 345	\969\A3:

:;9< 

# = ×

B*		 2 K	345

-	7? 

# = ÷ ]					1

Appendix A contains the emission rates developed fr om these factors.18Table 11: Hydrogen Fluoride Emission FactorsCASPollutantMassenaWestWarrickWenat-cheeAlumaxNorandaCentury -SebreeOrmetCenturyof KYIntalcoMassenaEastCenturyof WVRockdaleColumbiaFallsLakeCharlesPotline Stack(lb/tonAl)(lb/tonAl)(lb/tonAl)(lb/tonAl)(lb/tonAl)(lb/tonAl)(lb/tonAl)(lb/tonAl)(lb/tonAl)(lb/tonAl)(lb/tonAl)(lb/tonAl)(lb/tonAl)(lb/tonAl)7664393 Hydrogen Fluoride0.0500.0800.044 0.0340.029 0.0630.0500.3750.0500.030 0.101 0.101 0.090 N/ATotal Fluoride1.0203.000 3.000 2.700 N/APotline Roof Vent(lb/tonAl)(lb/tonAl)(lb/tonAl)(lb/tonAl)(lb/tonAl)(lb/tonAl)(lb/tonAl)(lb/tonAl)(lb/tonAl)(lb/tonAl)(lb/tonAl)(lb/tonAl)(lb/tonAl)(lb/tonAl)7664393 Hydrogen Fluoride0.4600.6600.440 0.3080.7600.5700.7800.3420.5001.030 0.905 0.905 0.814 N/ATotal Fluoride1.0203.000 3.000 2.700 N/AAnode Bake Furnace(lb/tonAnode)(lb/tonAnode)(lb/tonAnode)(lb/tonAnode)(lb/tonAnode)(lb/tonAnode)(lb/tonAnode)(lb/tonAnode)(lb/tonAnode)(lb/tonAnode)(lb/tonAnode)(lb/tonAnode)(lb/tonAnode)(lb/tonAnode)7664393 Hydrogen Fluoride 0.067 0.067 0.067 0.067 0.0670.001 N/A 0.067 0.067 N/A 0.0670.099 N/A 0.067Total Fluoride 0.200 0.200 0.200 0.200 0.200 N/A0.200 0.200 N/A 0.200 N/A 0.200- N/A = Not applicable, no emission unit at facility.- Blue values are original information request testresults, all other values derived based on total fluoride limits.- Total fluoride potroom limit was apportioned to potline stacks (10%) and potline roof vents (90%)- For Alumax (SPPD_FAC_04), a more stringent potline limit imposed by State regulations was applied.

# 19

4. Discussion of Actual, Allowable and Acute Emissions

a. Actual Emissions

Actual emission rates developed for this data set w ere based on facility aluminum or anode production

capacities and available performance test data in u nits of lb/ton of aluminum or anode production, as

appropriate. The resulting emission rates assume th at the facilities operate at capacity. It should be noted

that the Alcoa - Massena East production capacity w as corrected to 2/3 of original production capacity

based on new information provided by the company (o ne of the 3 potlines was permanently shut down

in September of 2013). Also, Columbia Falls Aluminu m was corrected to 4/5 of original production

capacity based on actual operational data since 199 9. Appendix A contains the actual emission rates

developed for this effort.

b. Allowable Emissions

Allowable emission rates were developed by scaling the actual emission rates. The EPA evaluated

allowable emissions based on responses to the infor mation request and estimated that allowable

emissions for currently regulated HAP (i.e., PAHs a nd HF) were generally about 1.5 times higher than

the actual emissions. For Columbia Falls, which has the highest potential for emissions of all the

facilities, the EPA evaluated site-specific data an d estimated that allowable emissions for the regula ted

HAP (i.e., PAHs and HF) were about 1.9 times higher than estimated actual emissions when the plant is

operating. The current NESHAP includes no standards for COS, PCB, D/F and HAP metal emissions.

Since there is no standard in place for these HAP a nd therefore no defined level of “MACT allowable”

emissions levels, we assumed that allowable emissio ns for COS, PCB, D/F and HAP metal emissions

were equal to estimated actual emissions.

c. Acute Emissions

To develop screening estimates of acute exposures i n the absence of hourly emissions data, the EPA

generally develops estimates of maximum hourly emis sions rates by multiplying the average actual

annual hourly emissions rates by a default factor t o cover routinely variable emissions. The EPA

chooses the factor based on process knowledge and e ngineering judgment reflecting, where appropriate,

circumstances of the particular source category. Th e default factor reflects the findings of the Texas

study of short-term emissions variability, which sh owed that most peak emission events in a heavilyindustrialized were less than twice the annual aver age hourly emissions rate. 3



# For the primary aluminum reduction source category, information was available to determine processspecific factors. The processes in this source cate gory are typically equipped with controls which wil l

not allow startup of the emission source until the associated control device is operating and will

automatically shut down the emission source if the associated controls malfunction. The potline

processes typically operate continuously, so there are no significant spikes in emissions. The EPA

believes emissions from the potlines are relatively consistent over time with minimal fluctuation.

The EPA estimated that the maximum allowable emissi ons for potlines are about 1.5 times higher than

the average long-term actual emissions for these so urces. Therefore, the EPA also assumes that hourly

emissions rates from potlines could occasionally in crease by a factor of up to 1.5 times the average

hourly emissions. The EPA believes this is a valid multiplier to estimate maximum acute emissions from

potlines. Paste production and anode baking process es may have specific cycles with peak emissions

occurring for a part of that cycle. The EPA believe s these peak emissions could be as high as 2 times the

average emissions for paste plants and bake furnace s.

A summary of the multipliers used in this data set is shown in Table 12.

# 20 Table 12: Summary of Allowable and Acute Multiplier s

HAP Metals Polychlorinated

Biphenyls Polycyclic

Aromatic

Hydrocarbons Dioxins and

Furans Hydrogen

Fluoride Carbonyl

Sulfide

Allowable Emissions

Potline Stack = Actual = Actual = Actual x 1.5 = Ac tual = Actual x 1.5 = Actual

Potline Roof Vent = Actual = Actual = Actual x 1.5 = Actual = Actual x 1.5 N/A

Anode Bake Furnace = Actual = Actual = Actual x 1.5 = Actual = Actual x 1.5 N/A

Paste Plant = Actual = Actual = Actual x 1.5 = Actu al N/A N/A

Pitch Storage Tank N/A N/A = Actual x 1.5 N/A N/A N /A



# Acute Emissions

Potline Stack = Actual x 1.5 = Actual x 1.5 = Actua l x 1.5 = Actual x 1.5 = Actual x 1.5 = Actual x 1. 5

Potline Roof Vent = Actual x 1.5 = Actual x 1.5 = A ctual x 1.5 = Actual x 1.5 = Actual x 1.5 N/A

Anode Bake Furnace = Actual x 2 = Actual x 2 = Actu al x 2 = Actual x 2 = Actual x 2 N/A

Paste Plant = Actual x 2 = Actual x 2 = Actual x 2 = Actual x 2 N/A N/A

Pitch Storage Tank N/A N/A = Actual x 2 N/A N/A N/A



# - Columbia Falls Aluminum Company is not in operati on. Actual and acute emissions were modeled as zero . Allowable

emissions were estimated at 1.9 times production ba sed actual emission rate estimates.



# IV. Non-Category Emissions Development

1. Secondary Aluminum Collocated Sources and Other Non -category Emissions

A dataset representing facility-wide emissions was developed. This dataset consisted of HAP emissions

from all processes at the primary aluminum producti on facilities, as well as all HAP emitted from nonprimary aluminum production processes. Three modeli ng files were developed for use in the risk

review; a file with data for only primary aluminum sources, a file for only primary aluminum sources

collocated with secondary aluminum sources, and a m odeling file with other non-category emissions

that are not primary or secondary aluminum units at major sources.

A total of 14 major source facilities were modeled. Of the 14 major source facilities, 8 were collocat ed

with secondary aluminum facilities. Of the 14 major source facilities, 10 had non-category emissions

that were not primary aluminum units. The facility- wide emissions dataset was created by adding nonprimary aluminum source category emission points to the primary aluminum source category dataset.

The modeling inputs for the secondary aluminum oper ations collocated at primary aluminum

production facilities are exactly the same as the i nputs used in the 2014 risk assessment for the

secondary aluminum production source category. 4



# Other non-category emissions data that were not sub mitted for the section 114 request or extracted fro m

the primary aluminum proposal file (e.g., boiler em issions) were extracted from the 2008 National

Emissions Inventory (NEI).

V. Quality Control Checks and Resulting Changes

Data reported in the ICRs were checked in several w ays. Data quality checks that were performed and

changes that were made are briefly summarized below :

Source latitudes and longitudes reported by facilit ies were checked in Google EarthTM to

verify accuracy and were corrected as needed. Corre ct format for latitude and longitude was

reviewed and corrected as needed.

# 21

The total number of emission points (e.g., number o f potlines) were checked in Google

EarthTM and with facility contacts to verify accurac y and were corrected as needed.

Reviewed, identified and corrected missing stack pa rameters (diameter, flow rate,

temperature).

Reviewed and corrected pollutant names and pollutan t codes.

Reviewed and corrected exhaust temperatures, stack heights, stack diameters, and exhaust

flow rates that appeared to be out of standard indu stry range.

Verified that actual emissions were less than or eq ual to allowable and acute emissions.

Reviewed test reports for adherence to QA requireme nts (e.g., sample size, sample

temperature, leak check) and discarded questionable results.

Verified all test results with test reports to ensu re accurate data was used for emissions

estimates.

Verified that multiple emission points of a given t ype (i.e., potline vents, bake furnace

stacks) have identical emission rates for a given p ollutant.

Reviewed calculation methodology and verified that emission factors and emission rates

calculated were accurate.

The quality control efforts employed for this proje ct resulted in a more accurate 2013 data set. A few

facilities had the number of emission release point s and/or the actual location of the release points

changed in the modeling file. In all cases, these c hanges were minor and did not significantly change

the modeling inputs or outputs.

VI. References

1. Industry average values provided by The Aluminum As sociation

2. Suriyapraphadilok, U., et al.

(http://www.acs.omnibooksonline.com/data/papers/200 4_D013.pdf)

3. See http://www.tceq.state.tx.us/compliance/field_op s/eer/index.html or the docket to access the

source of these data.

4. NESHAP for Secondary Aluminum Production Amendments Based on the Risk and

Technology Review. Docket ID No. EPA-HQ-OAR-2010-05 44.

# 1

Appendix A – 2013 Modeled Emission Rates2Table A-1: 2013 Potline Stack HAP Actual Metal EmissionRates (per release point)CASPollutantMassenaWestWarrickWenat-cheeAlumaxNorandaCentury(RTA) -SebreeOrmetCenturyof KYIntalcoMassenaEastCenturyof WVRockdaleColumbiaFallsLakeCharles3 ReleasePoints5 ReleasePoints4 ReleasePoints4 ReleasePoints4 ReleasePoints6 ReleasePoints6 ReleasePoints2 ReleasePoints18ReleasePoints2 ReleasePoints1 ReleasePoint45ReleasePoints10 ReleasePoints0ReleasePoints143,300ton Al295,900ton Al202,800ton Al246,900ton Al304,700ton Al216,100ton Al292,100ton Al269,000ton Al306,400ton Al91,867ton Al187,400ton Al208,550ton Al148,160ton Al0 ton Al(ton/yr)(ton/yr)(ton/yr)(ton/yr)(ton/yr)(ton/yr)(ton/yr)(ton/yr)(ton/yr)(ton/yr)(ton/yr)(ton/yr)(ton/yr)(ton/yr)7440360 Antimony 1.17E-03 1.44E-03 1.07E-03 1.07E-03 1.86E-03 2.90E-04 2.65E-03 3.89E-03 2.85E-04 1.11E-03 4.57E-03 1.13E-04 1.52E-04 N/A7440382 Arsenic 5.04E-04 6.25E-04 4.25E-03 9.31E-048.04E-04 5.98E-04 8.37E-03 1.31E-02 0.00E+00 6.87E-03 3.22E-02 7.97E-04 2.21E-03 N/A7440417 Beryllium 1.03E-03 1.28E-03 2.26E-05 1.60E-05 1.65E-03 1.85E-05 1.04E-04 1.91E-02 5.74E-06 2.78E-04 4.06E-03 1.00E-04 1.35E-04 N/A7440439 Cadmium 4.35E-04 5.39E-04 1.12E-04 1.64E-036.93E-04 2.78E-05 0.00E+00 4.29E-03 5.38E-04 0.00E+00 0.00E+00 0.00E+00 0.00E+00 N/A16065831 Chromium (III) 6.46E-03 8.01E-03 7.04E-032.13E-03 1.03E-02 1.98E-03 4.30E-03 2.73E-02 8.26E-04 1.87E-02 2.54E-02 6.27E-04 8.44E-04 N/A18540299 Chromium (VI) 8.30E-04 1.03E-03 9.04E-04 4.79E-04 1.32E-03 2.54E-04 5.52E-04 3.51E-03 1.06E-04 8.52E-04 3.26E-03 8.06E-05 1.08E-04 N/A7440484 Cobalt 7.11E-04 8.81E-04 1.28E-04 5.03E-041.13E-03 3.49E-05 1.48E-03 4.19E-03 2.20E-04 8.29E-04 2.79E-03 6.90E-05 9.29E-05 N/A7439921 Lead 1.49E-02 1.85E-02 3.08E-03 5.74E-03 2.38E-02 1.37E-04 4.69E-02 6.47E-02 7.11E-03 7.66E-035.85E-02 1.45E-03 1.95E-03 N/A7439965 Manganese 2.10E-02 2.60E-02 5.43E-03 2.55E-03 3.35E-02 8.55E-04 9.65E-02 3.59E-02 5.73E-03 1.47E-02 8.24E-02 2.04E-03 2.74E-03 N/A7440020 Nickel 6.88E-03 8.52E-03 1.66E-02 3.43E-031.10E-02 1.77E-03 1.84E-02 1.32E-01 1.71E-02 3.64E-02 7.07E-02 1.75E-03 1.17E-02 N/A253Selenium &Compounds 3.04E-03 3.76E-03 2.25E-03 1.90E-03 4.85E-03 2.85E-04 1.19E-02 3.18E-03 5.71E-04 2.78E-03 1.19E-02 2.95E-04 3.97E-04 N/ATotal Mercury (Hg) 1.71E-04 2.11E-04 1.59E-04 4.15E-04 2.72E-04 2.43E-05 2.12E-05 1.53E-03 1.66E-05 7.57E-05 6.69E-04 1.65E-05 2.23E-05 N/A200Elemental GaseousHg 1.37E-04 1.69E-04 1.27E-04 3.32E-04 2.18E-04 1.94E-05 1.70E-05 1.22E-03 1.33E-05 6.06E-05 5.35E-041.32E-05 1.78E-05 N/A201Gaseous DivalentHg 1.71E-05 2.11E-05 1.59E-05 4.15E-05 2.72E-05 2.43E-06 2.12E-06 1.53E-04 1.66E-06 7.57E-06 6.69E-051.65E-06 2.23E-06 N/A202Particulate DivalentHg 1.71E-05 2.11E-05 1.59E-05 4.15E-05 2.72E-05 2.43E-06 2.12E-06 1.53E-04 1.66E-06 7.57E-06 6.69E-051.65E-06 2.23E-06 N/A- N/A - no applicable emission unit at facility.- Columbia Falls Aluminum Company is not in operation. Allowable emissions estimates (equal to estimated actual emissions) are provided above, actual andacute emissions were modeled as zero.- The emission factors for total mercury (7439976)are multiplied by the default EPA mercury speciation factors of 0.80 for elemental gaseous mercury (200), 0.10 for gaseous divalent mercury (201),and 0.10 for particulate divalent mercury (202).3Table A-2: 2013 Potline Roof Vent HAP Actual MetalEmissionRates (per release point)CASPollutantMassenaWestWarrickWenat-cheeAlumaxNorandaCentury(RTA)-SebreeOrmetCenturyof KYIntalcoMassenaEastCenturyof WVRockdaleColumbiaFallsLakeCharles11ReleasePoints10ReleasePoints8 ReleasePoints4 ReleasePoints3 ReleasePoints6 ReleasePoints24ReleasePoints8 ReleasePoints6 ReleasePoints4 ReleasePoints1 ReleasePoint10ReleasePoints10 ReleasePoints0ReleasePoints143,300ton Al295,900ton Al202,800ton Al246,900ton Al304,700ton Al216,100ton Al292,100ton Al269,000ton Al306,400ton Al91,867ton Al187,400ton Al208,550ton Al148,160ton Al0 ton Al(ton/yr)(ton/yr)(ton/yr)(ton/yr)(ton/yr)(ton/yr)(ton/yr)(ton/yr)(ton/yr)(ton/yr)(ton/yr)(ton/yr)(ton/yr)(ton/yr)7440360 Antimony 1.28E-02 3.65E-02 2.03E-03 2.38E-02 1.00E-01 6.97E-03 7.14E-02 1.81E-03 1.04E-02 2.63E-03 1.85E-01 2.06E-02 6.15E-03 N/A7440382 Arsenic 2.89E-02 6.56E-02 8.16E-02 1.76E-012.25E-01 2.11E-02 2.75E-02 3.75E-03 0.00E+00 8.32E-02 4.24E-01 4.72E-02 5.36E-02 N/A7440417 Beryllium 7.20E-04 2.05E-03 1.93E-04 2.15E-04 5.62E-03 5.49E-03 4.63E-04 5.14E-03 2.06E-04 6.58E-04 1.04E-02 1.15E-03 3.45E-04 N/A7440439 Cadmium 1.11E-03 2.53E-03 1.21E-03 7.74E-038.68E-03 2.99E-03 0.00E+00 1.58E-03 5.61E-02 2.38E-03 0.00E+00 0.00E+00 1.53E-03 N/A16065831 Chromium (III) 1.89E-02 5.35E-02 2.67E-033.41E-02 1.47E-01 1.88E-02 1.02E-02 3.66E-02 3.63E-02 1.51E-01 2.71E-01 3.02E-02 9.03E-03 N/A18540299 Chromium (VI) 1.18E-03 3.35E-03 1.67E-04 3.90E-03 9.21E-03 1.18E-03 6.39E-04 2.29E-03 2.28E-03 2.34E-03 1.70E-02 1.89E-03 5.65E-04 N/A7440484 Cobalt 4.26E-03 1.21E-02 6.06E-04 3.39E-033.32E-02 7.04E-04 1.83E-02 8.81E-03 1.18E-03 9.32E-03 6.13E-02 6.83E-03 2.04E-03 N/A7439921 Lead 4.03E-02 1.15E-01 1.23E-02 2.28E-02 3.15E-01 6.32E-03 2.15E-01 2.54E-02 2.26E-02 4.18E-025.80E-01 6.46E-02 1.93E-02 N/A7439965 Manganese 2.54E-02 7.21E-02 6.46E-03 4.37E-02 1.98E-01 6.84E-03 1.13E-02 1.26E-01 2.24E-01 7.86E-02 3.66E-01 4.07E-02 1.22E-02 N/A7440020 Nickel 5.18E-02 1.18E-01 6.26E-02 2.72E-014.04E-01 1.82E-01 7.22E-02 3.96E-01 6.86E-02 5.55E-01 1.11E+00 1.24E-01 3.57E-01 N/A253Selenium &Compounds 1.06E-02 3.02E-02 2.11E-03 3.15E-03 8.28E-02 2.99E-03 5.79E-02 1.38E-03 2.08E-02 6.58E-03 1.53E-01 1.70E-02 5.09E-03 N/ATotal Mercury (Hg) 2.10E-04 5.97E-04 1.21E-04 1.42E-03 1.64E-03 2.36E-04 5.08E-06 1.48E-03 1.38E-03 1.62E-04 3.03E-03 3.37E-04 1.01E-04 N/A200Elemental GaseousHg 1.68E-04 4.78E-04 9.68E-05 1.14E-03 1.31E-03 1.89E-04 4.06E-06 1.18E-03 1.10E-03 1.30E-04 2.42E-032.70E-04 8.08E-05 N/A201 Gaseous Divalent Hg 2.10E-05 5.97E-05 1.21E-051.42E-04 1.64E-04 2.36E-05 5.08E-07 1.48E-04 1.38E-04 1.62E-05 3.03E-04 3.37E-05 1.01E-05 N/A202Particulate DivalentHg 2.10E-05 5.97E-05 1.21E-05 1.42E-04 1.64E-04 2.36E-05 5.08E-07 1.48E-04 1.38E-04 1.62E-05 3.03E-043.37E-05 1.01E-05 N/A- N/A - no applicable emission unit at facility.- Columbia Falls Aluminum Company is not in operation. Allowable emissions estimates (equal to estimated actual emissions) are provided above, actual andacute emissions were modeled as zero.- The emission factors for total mercury (7439976)are multiplied by the default EPA mercury speciation factors of 0.80 for elemental gaseous mercury (200), 0.10 for gaseous divalent mercury (201),and 0.10 for particulate divalent mercury (202).4Table A-3: 2013 Anode Bake Furnace HAP Metal Emission Rates (per release point)CASPollutantMassenaWestWarrickWenat-cheeAlumaxNorandaCentury(RTA) -SebreeOrmetCenturyof KYIntalcoMassenaEastCenturyof WVRockdaleColumbiaFallsLakeCharles1 ReleasePoint1 ReleasePoint1 ReleasePoint1 ReleasePoint3 ReleasePoints1 ReleasePoint0ReleasePoints1 ReleasePoint1 ReleasePoint0 ReleasePoints1 ReleasePoint1 ReleasePoint0 ReleasePoints2 ReleasePoint81,681ton anode168,663ton anode115,596ton anode140,733ton anode173,679ton anode123,177ton anode0 tonanode153,330ton anode174,648ton anode0 tonanode106,818ton anode118,874ton anode0 tonanode150,000ton anode(ton/yr)(ton/yr)(ton/yr)(ton/yr)(ton/yr)(ton/yr)(ton/yr)(ton/yr)(ton/yr)(ton/yr)(ton/yr)(ton/yr)(ton/yr)(ton/yr)7440360 Antimony 1.22E-04 2.51E-04 2.74E-04 1.10E-04 8.63E-05 1.63E-04 N/A 2.29E-04 2.60E-04 N/A 1.59E-04 1.77E-04 N/A 1.12E-047440382 Arsenic 2.15E-04 4.44E-04 5.49E-04 1.88E-041.52E-04 2.24E-04 N/A 4.04E-04 4.60E-04 N/A 2.81E-04 3.13E-04 N/A 1.98E-047440417 Beryllium 3.56E-06 7.34E-06 5.51E-06 2.45E-06 2.52E-06 8.07E-06 N/A 6.67E-06 7.60E-06 N/A 4.65E-06 5.17E-06 N/A 3.26E-067440439 Cadmium 1.24E-04 2.55E-04 2.74E-05 5.31E-048.77E-05 6.59E-05 N/A 2.32E-04 2.65E-04 N/A 1.62E-04 1.80E-04 N/A 1.14E-0416065831 Chromium III 2.93E-04 6.04E-04 6.07E-04 5.13E-04 2.07E-04 2.28E-04 N/A 5.49E-04 6.26E-04 N/A3.83E-04 4.26E-04 N/A 2.69E-0418540299 Chromium (VI) 4.99E-04 1.03E-03 1.04E-03 8.76E-04 3.54E-04 3.88E-04 N/A 9.38E-04 1.07E-03 N/A6.53E-04 7.27E-04 N/A 4.59E-047440484 Cobalt 1.12E-04 2.31E-04 3.31E-04 1.43E-047.95E-05 2.93E-05 N/A 2.10E-04 2.40E-04 N/A 1.47E-04 1.63E-04 N/A 1.03E-047439921 Lead 3.78E-04 7.80E-04 2.74E-04 1.18E-03 2.68E-04 3.81E-04 N/A 7.09E-04 8.08E-04 N/A 4.94E-045.50E-04 N/A 3.47E-047439965 Manganese 1.40E-03 2.89E-03 1.27E-03 5.25E-03 9.93E-04 3.99E-04 N/A 2.63E-03 3.00E-03 N/A 1.83E-03 2.04E-03 N/A 1.29E-037440020 Nickel 7.83E-04 1.62E-03 2.04E-03 1.31E-035.55E-04 2.25E-04 N/A 1.47E-03 1.67E-03 N/A 1.02E-03 1.14E-03 N/A 7.19E-04253Selenium &Compounds 1.23E-03 2.54E-03 5.49E-04 5.39E-03 8.72E-04 2.60E-04 N/A 2.31E-03 2.63E-03 N/A 1.61E-03 1.79E-03 N/A 1.13E-03Total Mercury (Hg) 6.06E-04 1.25E-03 1.96E-03 7.38E-04 4.30E-04 7.96E-06 N/A 1.14E-03 1.30E-03 N/A 7.93E-04 8.82E-04 N/A 5.57E-04200Elemental GaseousHg 4.85E-04 1.00E-03 1.57E-03 5.90E-04 3.44E-04 6.37E-06 N/A 9.12E-04 1.04E-03 N/A 6.34E-04 7.06E-04 N/A 4.46E-04201 Gaseous Divalent Hg 6.06E-05 1.25E-04 1.96E-047.38E-05 4.30E-05 7.96E-07 N/A 1.14E-04 1.30E-04 N/A 7.93E-05 8.82E-05 N/A 5.57E-05202Particulate DivalentHg 6.06E-05 1.25E-04 1.96E-04 7.38E-05 4.30E-05 7.96E-07 N/A 1.14E-04 1.30E-04 N/A 7.93E-05 8.82E-05 N/A 5.57E-05- N/A - no applicable emission unit at facility.- The emission factors for total mercury (7439976)are multiplied by the default EPA mercury speciation factors of 0.80 for elemental gaseous mercury (200), 0.10 for gaseous divalent mercury (201),and 0.10 for particulate divalent mercury (202).5Table A-4: 2013 Paste Plant HAP Metal Emission Rates (per release point)CASPollutantMassenaWestWarrickWenat-cheeAlumaxNorandaCentury(RTA) -SebreeOrmetCenturyof KYIntalcoMassenaEastCenturyof WVRockdaleColumbiaFallsLakeCharles1 ReleasePoint1 ReleasePoint1 ReleasePoint1 ReleasePoint1 ReleasePoint1 ReleasePoint0ReleasePoints1 ReleasePoint1 ReleasePoint0 ReleasePoints1 ReleasePoint1 ReleasePoint1 ReleasePoint1ReleasePoint81,681ton anode168,663ton anode115,596ton anode140,733ton anode173,679ton anode123,177ton anode0 tonanode153,330ton anode174,648ton anode0 tonanode106,818ton anode118,874ton anode84,451 tonanode150,000tonanode(ton/yr)(ton/yr)(ton/yr)(ton/yr)(ton/yr)(ton/yr)(ton/yr)(ton/yr)(ton/yr)(ton/yr)(ton/yr)(ton/yr)(ton/yr)(ton/yr)7440360 Antimony 4.10E-05 8.47E-05 3.72E-05 1.76E-05 8.72E-05 1.31E-04 N/A 7.70E-05 8.77E-05 N/A 5.37E-05 5.97E-05 1.79E-05 7.53E-057440382 Arsenic 7.55E-05 1.56E-04 8.23E-05 1.33E-051.60E-04 2.42E-04 N/A 1.42E-04 1.61E-04 N/A 9.87E-05 1.10E-04 3.29E-05 1.39E-047440417 Beryllium 1.04E-06 2.14E-06 8.29E-07 2.54E-07 2.21E-06 3.59E-06 N/A 1.95E-06 2.22E-06 N/A 1.36E-06 1.51E-06 4.52E-07 1.91E-067440439 Cadmium 2.11E-05 4.35E-05 4.12E-06 9.95E-054.48E-05 3.78E-06 N/A 3.95E-05 4.50E-05 N/A 2.75E-05 3.07E-05 9.17E-06 3.87E-0516065831 Chromium III 2.25E-04 4.66E-04 1.40E-04 1.04E-04 4.79E-04 7.79E-04 N/A 4.23E-04 4.82E-04 N/A2.95E-04 3.28E-04 9.81E-05 4.14E-0418540299 Chromium (VI) 9.71E-05 2.01E-04 6.05E-05 4.49E-05 2.07E-04 3.36E-04 N/A 1.82E-04 2.08E-04 N/A1.27E-04 1.41E-04 4.23E-05 1.78E-047440484 Cobalt 1.05E-05 2.17E-05 3.28E-06 2.58E-052.23E-05 2.14E-05 N/A 1.97E-05 2.25E-05 N/A 1.37E-05 1.53E-05 4.58E-06 1.93E-057439921 Lead 7.57E-05 1.56E-04 1.94E-04 9.08E-05 1.61E-04 5.60E-05 N/A 1.42E-04 1.62E-04 N/A 9.90E-051.10E-04 3.30E-05 1.39E-047439965 Manganese 4.93E-04 1.02E-03 1.77E-04 1.94E-04 1.05E-03 1.87E-03 N/A 9.25E-04 1.05E-03 N/A 6.45E-04 7.17E-04 2.15E-04 9.05E-047440020 Nickel 1.60E-04 3.29E-04 2.53E-04 2.43E-043.39E-04 2.40E-04 N/A 2.99E-04 3.41E-04 N/A 2.09E-04 2.32E-04 6.94E-05 2.93E-04253Selenium &Compounds 5.01E-05 1.03E-04 8.23E-05 8.01E-06 1.06E-04 1.32E-04 N/A 9.40E-05 1.07E-04 N/A 6.55E-05 7.29E-05 2.18E-05 9.20E-05Total Mercury (Hg) 4.28E-06 8.84E-06 5.02E-06 8.50E-06 9.10E-06 6.58E-06 N/A 8.04E-06 9.15E-06 N/A 5.60E-06 6.23E-06 1.86E-06 7.86E-06200Elemental GaseousHg 3.42E-06 7.07E-06 4.02E-06 6.80E-06 7.28E-06 5.26E-06 N/A 6.43E-06 7.32E-06 N/A 4.48E-06 4.98E-06 1.49E-06 6.29E-06201Gaseous DivalentHg 4.28E-07 8.84E-07 5.02E-07 8.50E-07 9.10E-07 6.58E-07 N/A 8.04E-07 9.15E-07 N/A 5.60E-07 6.23E-07 1.86E-07 7.86E-07202Particulate DivalentHg 4.28E-07 8.84E-07 5.02E-07 8.50E-07 9.10E-07 6.58E-07 N/A 8.04E-07 9.15E-07 N/A 5.60E-07 6.23E-07 1.86E-07 7.86E-07- N/A - no applicable emission unit at facility.- Columbia Falls Aluminum Company is not in operation. Allowable emissions estimates (equal to estimated actual emissions) are provided above, actual andacute emissions were modeled as zero.- The emission factors for total mercury (7439976)are multiplied by the default EPA mercury speciation factors of 0.80 for elemental gaseous mercury (200), 0.10 for gaseous divalent mercury (201),and 0.10 for particulate divalent mercury (202).6Table A-5: 2013 Potline Stack Organic Emission Rates (per release point)CASPollutantMassenaWestWarrickWenatcheeAlumaxNorandaCentury- SebreeOrmetCenturyof KYIntalcoMassenaEastCenturyof WVRockdaleColumbiaFallsLakeCharles3 ReleasePoints5 ReleasePoints4 ReleasePoints4 ReleasePoints4 ReleasePoints6 ReleasePoints6 ReleasePoints2 ReleasePoints18ReleasePoints2 ReleasePoints1 ReleasePoint45ReleasePoints10 ReleasePoints0ReleasePoints143,300ton Al295,900ton Al202,800ton Al246,900ton Al304,700ton Al216,100ton Al292,100ton Al269,000ton Al306,400ton Al91,867ton Al187,400ton Al208,550ton Al148,160ton Al0 ton Al(ton/yr)(ton/yr)(ton/yr)(ton/yr)(ton/yr)(ton/yr)(ton/yr)(ton/yr)(ton/yr)(ton/yr)(ton/yr)(ton/yr)(ton/yr)(ton/yr)Polychlorinated Biphenyls70362504 3,4,4',5-TCB (PCB-81) 3.99E-09 4.95E-09 4.24E-09 5.16E-09 6.37E-09 3.01E-09 4.07E-09 1.12E-081.42E-09 4.04E-08 1.57E-08 3.87E-10 1.04E-08N/A32598133 3,3',4,4'-TCB (PCB-77) 1.61E-08 2.00E-08 1.71E-08 2.08E-08 2.57E-08 1.22E-08 1.64E-08 4.54E-08 5.74E-09 3.47E-07 6.32E-08 1.56E-09 8.95E-08N/A65510443 2',3,4,4',5-PeCB (PCB-123) 3.43E-09 4.25E-09 3.64E-09 4.43E-09 5.47E-09 2.59E-09 3.50E-09 9.66E-09 1.22E-09 3.15E-08 1.35E-08 3.33E-10 8.13E-09N/A31508006 2,3',4,4',5-PeCB (PCB-118) 1.98E-07 2.46E-07 2.11E-07 2.56E-07 3.16E-07 1.50E-07 2.02E-07 5.59E-07 7.07E-08 1.30E-06 7.78E-07 1.92E-08 3.36E-07N/A74472370 2,3,4,4',5-PeCB (PCB-114) 9.30E-09 1.15E-08 9.87E-09 1.20E-08 1.48E-08 7.01E-09 9.48E-09 2.62E-08 3.31E-09 4.05E-08 3.65E-08 9.02E-10 1.04E-08N/A32598144 2,3,3',4,4'-PeCB (PCB-105) 7.11E-08 8.81E-08 7.55E-08 9.19E-08 1.13E-07 5.36E-08 7.25E-08 2.00E-07 2.53E-08 5.10E-07 2.79E-07 6.90E-09 8.13E-09N/A57465288 3,3',4,4',5-PeCB (PCB-126) 3.57E-09 4.43E-09 3.79E-09 4.62E-09 5.70E-09 2.69E-09 3.64E-09 1.01E-08 1.27E-09 3.22E-08 1.40E-08 3.47E-10 8.31E-09N/A526637262,3',4,4',5,5'-HxCB (PCB167) 1.22E-08 1.51E-08 1.30E-08 1.58E-08 1.95E-08 9.21E-09 1.25E-08 3.44E-08 4.35E-09 3.40E-08 4.79E-08 1.19E-09 8.78E-09N/A383800842,3,3',4,4',5/2,3,3',4,4',5-HxCB (PCBs-156/157) 1.73E-08 2.14E-08 1.84E-08 2.24E-08 2.76E-08 1.31E-08 1.76E-08 4.87E-08 6.17E-09 9.07E-08 6.79E-08 1.68E-09 2.34E-08N/A327741663,3',4,4',5,5'-HxCB (PCB169) 3.14E-09 3.89E-09 3.33E-09 4.05E-09 5.00E-09 2.37E-09 3.20E-09 8.83E-09 1.12E-09 4.79E-09 1.23E-08 3.04E-10 1.24E-09N/A396353192,3,3',4,4',5,5'-HpCB (PCB189) 4.43E-09 5.49E-09 4.70E-09 5.72E-09 7.07E-09 3.34E-09 4.52E-09 1.25E-08 1.58E-09 5.63E-09 1.74E-08 4.30E-10 1.45E-09N/APolycyclic Aromatic Hydrocarbons91203 Naphthalene 4.03E-03 4.99E-03 4.27E-03 5.20E-03 6.42E-03 3.04E-03 4.10E-03 1.13E-02 1.43E-03 7.98E-01 1.58E-02 3.91E-04 2.06E-01N/A91576 2-Methylnaphthalene 4.61E-05 5.72E-05 4.90E-05 5.96E-05 7.36E-05 3.48E-05 4.70E-05 1.30E-04 1.64E-05 3.33E-01 1.81E-04 4.48E-06 1.63E-01N/A83329 Acenaphthene 6.21E-05 7.69E-05 6.59E-05 8.02E-05 9.90E-05 4.68E-05 6.33E-05 1.75E-04 2.21E-05 7.46E-01 2.44E-04 6.02E-06 3.66E-01N/A208968 Acenaphthylene 1.10E-05 1.36E-05 1.16E-05 1.42E-05 1.75E-05 8.26E-06 1.12E-05 3.09E-05 3.91E-061.42E-01 4.30E-05 1.06E-06 6.98E-02N/A86737 Fluorene 8.31E-05 1.03E-04 8.82E-05 1.07E-041.33E-04 6.27E-05 8.47E-05 2.34E-04 2.96E-05 1.51E-01 3.26E-04 8.06E-06 7.39E-02N/A85018 Phenanthrene 2.42E-04 2.99E-04 2.56E-04 3.12E-04 3.85E-04 1.82E-04 2.46E-04 6.80E-04 8.61E-05 3.45E-01 9.48E-04 2.34E-05 1.69E-01N/A120127 Anthracene 3.53E-05 4.37E-05 3.75E-05 4.56E-05 5.63E-05 2.66E-05 3.60E-05 9.94E-05 1.26E-05 1.22E-02 1.38E-04 3.42E-06 5.97E-03N/A206440 Fluoranthene 6.99E-05 8.66E-05 7.42E-05 9.03E-05 1.11E-04 5.27E-05 7.12E-05 1.97E-04 2.49E-05 1.65E-01 2.74E-04 6.78E-06 8.10E-02N/A129000 Pyrene 3.75E-05 4.64E-05 3.98E-05 4.84E-05 5.97E-05 2.82E-05 3.82E-05 1.05E-04 1.33E-05 4.56E-02 1.47E-04 3.63E-06 2.23E-02N/A56553 Benz[a]Anthracene 8.02E-06 9.94E-06 8.52E-061.04E-05 1.28E-05 6.05E-06 8.18E-06 2.26E-05 2.86E-06 2.10E-03 3.15E-05 7.78E-07 1.03E-03N/A7218019 Chrysene 1.41E-05 1.75E-05 1.50E-05 1.82E-052.25E-05 1.06E-05 1.44E-05 3.97E-05 5.02E-06 1.33E-02 5.53E-05 1.37E-06 6.51E-03N/A205992 Benzo[b]Fluoranthene 1.51E-05 1.87E-05 1.60E-05 1.95E-05 2.40E-05 1.14E-05 1.54E-05 4.25E-05 5.37E-06 9.90E-03 5.92E-05 1.46E-06 4.85E-03N/A207089 Benzo[k]Fluoranthene 6.27E-06 7.77E-06 6.66E-06 8.10E-06 1.00E-05 4.73E-06 6.39E-06 1.77E-05 2.23E-06 4.80E-03 2.46E-05 6.08E-07 2.35E-03N/A192972 Benzo[e]Pyrene 1.32E-05 1.64E-05 1.40E-05 1.71E-05 2.10E-05 9.95E-06 1.35E-05 3.72E-05 4.70E-066.05E-03 5.18E-05 1.28E-06 2.97E-03N/A50328 Benzo[a]Pyrene 6.14E-06 7.60E-06 6.51E-06 7.93E-06 9.79E-06 4.63E-06 6.25E-06 1.73E-05 2.19E-061.56E-03 2.41E-05 5.95E-07 7.67E-04N/A198550 Perylene 3.42E-06 4.24E-06 3.63E-06 4.42E-065.46E-06 2.58E-06 3.49E-06 9.63E-06 1.22E-06 4.62E-04 1.34E-05 3.32E-07 2.26E-04N/A193395 Indeno[1,2,3-c,d]Pyrene 7.44E-06 9.21E-06 7.89E-06 9.61E-06 1.19E-05 5.61E-06 7.58E-06 2.09E-052.65E-06 2.10E-03 2.92E-05 7.22E-07 1.03E-03N/A53703 Dibenzo[a,h]Anthracene 5.82E-06 7.22E-06 6.18E-06 7.53E-06 9.29E-06 4.39E-06 5.94E-06 1.64E-05 2.08E-06 5.55E-04 2.29E-05 5.65E-07 2.72E-04N/A191242 Benzo[g,h,i,]Perylene 9.54E-06 1.18E-05 1.01E-05 1.23E-05 1.52E-05 7.19E-06 9.72E-06 2.69E-05 3.40E-06 3.23E-03 3.74E-05 9.25E-07 1.58E-03N/ADioxins and Furans17460162,3,7,8-Tetrachlorodibenzo-pDioxin 8.84E-10 1.09E-09 9.38E-10 1.14E-09 1.41E-096.66E-10 9.01E-10 2.49E-09 3.15E-10 2.25E-09 3.47E-09 8.57E-11 5.80E-10N/A403217641,2,3,7,8-Pentachlorodibenzop-Dioxin 9.14E-10 1.13E-09 9.70E-10 1.18E-09 1.46E-09 6.89E-10 9.32E-10 2.57E-09 3.26E-10 2.45E-09 3.59E-09 8.87E-11 6.31E-10N/A392272861,2,3,4,7,8-Hexachlorodibenzo-p-Dioxin 8.70E-11 1.08E-10 9.23E-11 1.12E-10 1.39E-10 6.56E-11 8.86E-11 2.45E-10 3.10E-11 2.70E-09 3.41E-10 8.44E-12 6.98E-10N/A576538571,2,3,6,7,8-Hexachlorodibenzo-p-Dioxin 7.44E-11 9.22E-11 7.90E-11 9.62E-11 1.19E-10 5.61E-11 7.59E-11 2.10E-10 2.65E-11 2.80E-09 2.92E-10 7.22E-12 7.21E-10N/A194087431,2,3,7,8,9-Hexachlorodibenzo-p-Dioxin 1.40E-10 1.74E-10 1.49E-10 1.81E-10 2.24E-10 1.06E-10 1.43E-10 3.95E-10 4.99E-11 3.67E-09 5.50E-10 1.36E-11 9.47E-10N/A358224691,2,3,4,6,7,8-Heptachlorodibenzodioxin 3.06E-11 3.80E-11 3.25E-113.96E-11 4.89E-11 2.31E-11 3.12E-11 8.63E-11 1.09E-11 7.35E-09 1.20E-10 2.97E-12 1.90E-09N/A512073192,3,7,8-Tetrachlorodibenzofuran 3.58E-10 4.44E-10 3.81E-104.63E-10 5.72E-10 2.70E-10 3.65E-10 1.01E-09 1.28E-10 1.81E-08 1.41E-09 3.48E-11 4.66E-09N/A571174161,2,3,7,8-Pentachlorodibenzofuran 6.44E-11 7.98E-11 6.84E-118.33E-11 1.03E-10 4.86E-11 6.57E-11 1.81E-10 2.30E-11 7.85E-09 2.53E-10 6.25E-12 2.03E-09N/A571173142,3,4,7,8-Pentachlorodibenzofuran 2.66E-10 3.30E-10 2.83E-103.44E-10 4.25E-10 2.01E-10 2.71E-10 7.50E-10 9.49E-11 3.34E-08 1.04E-09 2.58E-11 8.63E-09N/A706482691,2,3,4,7,8-Hexachlorodibenzofuran 1.04E-10 1.29E-10 1.10E-10 1.34E-10 1.66E-10 7.85E-11 1.06E-10 2.93E-10 3.71E-11 1.20E-08 4.08E-10 1.01E-11 3.11E-09N/A571174491,2,3,6,7,8-Hexachlorodibenzofuran 7.15E-11 8.86E-11 7.59E-11 9.24E-11 1.14E-10 5.39E-11 7.29E-11 2.01E-10 2.55E-11 6.08E-09 2.80E-10 6.94E-12 1.57E-09N/A729182191,2,3,7,8,9-Hexachlorodibenzofuran 8.40E-11 1.04E-10 8.91E-11 1.09E-10 1.34E-10 6.33E-11 8.56E-11 2.36E-10 2.99E-11 2.14E-09 3.29E-10 8.15E-12 5.52E-10N/A608513452,3,4,6,7,8-Hexachlorodibenzofuran 9.19E-11 1.14E-10 9.75E-11 1.19E-10 1.46E-10 6.93E-11 9.36E-11 2.59E-10 3.27E-11 4.09E-09 3.60E-10 8.91E-12 1.06E-09N/A675623941,2,3,4,6,7,8-Heptachlorodibenzofuran 2.10E-11 2.60E-11 2.23E-112.72E-11 3.35E-11 1.59E-11 2.14E-11 5.92E-11 7.49E-12 2.08E-08 8.25E-11 2.04E-12 5.36E-09N/A556738971,2,3,4,7,8,9-Heptachlorodibenzofuran 9.31E-12 1.15E-11 9.88E-121.20E-11 1.48E-11 7.02E-12 9.49E-12 2.62E-11 3.32E-12 2.47E-09 3.65E-11 9.03E-13 6.36E-10N/A- N/A - no applicable emission unit at facility.- Columbia Falls Aluminum Company is not in operation. Allowable emissions estimates (estimated to beequal to 1.9 times estimated actual emissions for polycyclic aromatic hydrocarbons and 1.0times estimated actual emissions for other species)are provided above; actual and acute emissions were modeled as zero.8Table A-6: 2013 Potline Roof Vent Organic EmissionRates (per release point)CASPollutantMassenaWestWarrickWenatcheeAlumaxNorandaCentury- SebreeOrmetCenturyof KYIntalcoMassenaEastCenturyof WVRockdaleColumbiaFallsLakeCharles11ReleasePoints10ReleasePoints8 ReleasePoints4 ReleasePoints3 ReleasePoints6 ReleasePoints24ReleasePoints8 ReleasePoints6 ReleasePoints4 ReleasePoints1 ReleasePoint10ReleasePoints10ReleasePoints0 ReleasePoints143,300ton Al295,900ton Al202,800ton Al246,900ton Al304,700ton Al216,100ton Al292,100ton Al269,000ton Al306,400ton Al91,867ton Al187,400ton Al208,550ton Al148,160ton Al0 ton Al(ton/yr)(ton/yr)(ton/yr)(ton/yr)(ton/yr)(ton/yr)(ton/yr)(ton/yr)(ton/yr)(ton/yr)(ton/yr)(ton/yr)(ton/yr)(ton/yr)Polychlorinated Biphenyls70362504 3,4,4',5-TCB (PCB-81) 2.50E-08 7.10E-08 4.87E-08 1.19E-07 1.95E-07 6.92E-08 2.34E-08 6.46E-089.80E-08 1.91E-07 3.60E-07 4.00E-08 9.86E-08N/A32598133 3,3',4,4'-TCB (PCB-77) 1.37E-07 3.89E-07 2.66E-07 6.49E-07 1.07E-06 3.78E-07 1.28E-07 3.53E-07 5.37E-07 1.99E-06 1.97E-06 2.19E-07 1.03E-06N/A65510443 2',3,4,4',5-PeCB (PCB-123) 4.02E-08 1.14E-07 7.83E-08 1.91E-07 3.14E-07 1.11E-07 3.76E-08 1.04E-07 1.58E-07 1.91E-07 5.79E-07 6.44E-08 9.86E-08N/A31508006 2,3',4,4',5-PeCB (PCB-118) 1.76E-06 4.99E-06 3.42E-06 8.33E-06 1.37E-05 4.86E-06 1.64E-06 4.54E-06 6.89E-06 8.47E-06 2.53E-05 2.81E-06 4.37E-06N/A74472370 2,3,4,4',5-PeCB (PCB-114) 6.29E-08 1.78E-07 1.22E-07 2.98E-07 4.90E-07 1.74E-07 5.87E-08 1.62E-07 2.46E-07 2.53E-07 9.04E-07 1.01E-07 1.31E-07N/A32598144 2,3,3',4,4'-PeCB (PCB-105) 5.03E-07 1.14E-07 9.78E-07 2.38E-06 3.92E-06 1.39E-06 3.76E-08 1.30E-06 1.97E-06 3.37E-06 7.23E-06 8.05E-07 9.86E-08N/A57465288 3,3',4,4',5-PeCB (PCB-126) 2.93E-08 8.32E-08 5.70E-08 1.39E-07 2.28E-07 8.10E-08 2.74E-08 7.56E-08 1.15E-07 2.51E-07 4.21E-07 4.69E-08 1.30E-07N/A526637262,3',4,4',5,5'-HxCB (PCB167) 6.50E-08 1.85E-07 1.27E-07 3.08E-07 5.07E-07 1.80E-07 6.08E-08 1.68E-07 2.55E-07 1.55E-07 9.36E-07 1.04E-07 8.02E-08N/A383800842,3,3',4,4',5/2,3,3',4,4',5-HxCB (PCBs-156/157) 1.75E-07 4.96E-07 3.40E-07 8.27E-07 1.36E-06 4.83E-07 1.63E-07 4.51E-07 6.85E-07 4.44E-07 2.51E-06 2.80E-07 2.29E-07N/A327741663,3',4,4',5,5'-HxCB (PCB169) 1.39E-08 3.95E-08 2.71E-08 6.59E-08 1.08E-07 3.85E-08 1.30E-08 3.59E-08 5.45E-08 3.98E-08 2.00E-07 2.23E-08 2.05E-08N/A396353192,3,3',4,4',5,5'-HpCB (PCB189) 3.15E-08 8.94E-08 6.13E-08 1.49E-07 2.46E-07 8.71E-08 2.94E-08 8.13E-08 1.23E-07 3.78E-08 4.53E-07 5.04E-08 1.95E-08N/APolycyclic Aromatic Hydrocarbons91203 Naphthalene 1.29E-02 3.67E-02 2.51E-02 6.12E-02 1.01E-01 3.57E-02 1.21E-02 3.34E-02 5.07E-02 2.25E-01 1.86E-01 2.07E-02 1.16E-01N/A91576 2-Methylnaphthalene 1.22E-03 3.47E-03 2.38E-03 5.79E-03 9.52E-03 3.38E-03 1.14E-03 3.15E-03 4.79E-03 1.54E-01 1.76E-02 1.96E-03 1.51E-01N/A83329 Acenaphthene 1.33E-03 3.77E-03 2.58E-03 6.29E-03 1.04E-02 3.67E-03 1.24E-03 3.43E-03 5.21E-03 3.24E-01 1.91E-02 2.13E-03 3.18E-01N/A208968 Acenaphthylene 4.55E-05 1.29E-04 8.86E-05 2.16E-04 3.55E-04 1.26E-04 4.25E-05 1.18E-04 1.78E-042.58E-02 6.55E-04 7.29E-05 2.53E-02N/A86737 Fluorene 5.81E-04 1.65E-03 1.13E-03 2.75E-034.53E-03 1.61E-03 5.43E-04 1.50E-03 2.28E-03 5.96E-02 8.36E-03 9.30E-04 5.84E-02N/A85018 Phenanthrene 1.32E-03 3.76E-03 2.57E-03 6.27E-03 1.03E-02 3.66E-03 1.24E-03 3.41E-03 5.18E-03 4.59E-01 1.90E-02 2.12E-03 4.50E-01N/A120127 Anthracene 1.39E-04 3.93E-04 2.70E-04 6.56E-04 1.08E-03 3.83E-04 1.29E-04 3.58E-04 5.43E-04 5.14E-02 1.99E-03 2.22E-04 5.04E-02N/A206440 Fluoranthene 1.25E-03 3.55E-03 2.43E-03 5.92E-03 9.74E-03 3.45E-03 1.17E-03 3.22E-03 4.90E-03 6.68E-01 1.80E-02 2.00E-03 6.55E-01N/A129000 Pyrene 3.59E-04 1.02E-03 6.99E-04 1.70E-03 2.80E-03 9.93E-04 3.36E-04 9.27E-04 1.41E-03 1.60E-01 5.17E-03 5.75E-04 1.57E-01N/A956553 Benz[a]Anthracene 5.06E-05 1.44E-04 9.85E-052.40E-04 3.95E-04 1.40E-04 4.73E-05 1.31E-04 1.98E-04 8.20E-02 7.28E-04 8.10E-05 8.04E-02N/A218019 Chrysene 2.86E-04 8.13E-04 5.57E-04 1.36E-032.23E-03 7.92E-04 2.68E-04 7.39E-04 1.12E-03 2.43E-01 4.12E-03 4.59E-04 2.38E-01N/A205992 Benzo[b]Fluoranthene 2.23E-04 6.35E-04 4.35E-04 1.06E-03 1.74E-03 6.18E-04 2.09E-04 5.77E-04 8.76E-04 2.98E-01 3.21E-03 3.58E-04 2.92E-01N/A207089 Benzo[k]Fluoranthene 4.99E-05 1.42E-04 9.70E-05 2.36E-04 3.89E-04 1.38E-04 4.66E-05 1.29E-04 1.95E-04 1.13E-01 7.17E-04 7.98E-05 1.11E-01N/A192972 Benzo[e]Pyrene 9.03E-05 2.57E-04 1.76E-04 4.28E-04 7.04E-04 2.50E-04 8.44E-05 2.33E-04 3.54E-041.60E-01 1.30E-03 1.45E-04 1.57E-01N/A50328 Benzo[a]Pyrene 1.50E-05 4.25E-05 2.91E-05 7.09E-05 1.17E-04 4.14E-05 1.40E-05 3.86E-05 5.87E-054.11E-02 2.15E-04 2.40E-05 4.03E-02N/A198550 Perylene 1.11E-05 3.16E-05 2.17E-05 5.27E-058.68E-05 3.08E-05 1.04E-05 2.87E-05 4.36E-05 9.71E-03 1.60E-04 1.78E-05 9.52E-03N/A193395 Indeno[1,2,3-c,d]Pyrene 3.37E-05 9.56E-05 6.55E-05 1.59E-04 2.62E-04 9.31E-05 3.14E-05 8.69E-051.32E-04 5.03E-02 4.84E-04 5.39E-05 4.93E-02N/A53703 Dibenzo[a,h]Anthracene 2.93E-05 8.32E-05 5.70E-05 1.39E-04 2.29E-04 8.10E-05 2.74E-05 7.57E-05 1.15E-04 1.53E-02 4.22E-04 4.69E-05 1.50E-02N/A191242 Benzo[g,h,i,]Perylene 4.66E-05 1.32E-04 9.07E-05 2.21E-04 3.64E-04 1.29E-04 4.36E-05 1.20E-04 1.83E-04 6.19E-02 6.71E-04 7.46E-05 6.07E-02N/ADioxins and Furans17460162,3,7,8-Tetrachlorodibenzop-Dioxin 4.58E-09 1.30E-08 8.91E-09 2.17E-08 3.57E-08 1.27E-08 4.28E-09 1.18E-08 1.80E-08 1.24E-08 6.59E-08 7.33E-09 6.41E-09N/A403217641,2,3,7,8-Pentachlorodibenzo-p-Dioxin 3.89E-09 1.11E-08 7.58E-09 1.84E-08 3.04E-08 1.08E-08 3.64E-09 1.00E-08 1.53E-08 2.36E-08 5.60E-08 6.23E-09 1.22E-08N/A392272861,2,3,4,7,8-Hexachlorodibenzo-p-Dioxin 3.87E-10 1.10E-09 7.52E-10 1.83E-09 3.01E-09 1.07E-09 3.61E-10 9.98E-10 1.52E-09 1.85E-08 5.56E-09 6.19E-10 9.57E-09N/A576538571,2,3,6,7,8-Hexachlorodibenzo-p-Dioxin 7.73E-10 2.19E-09 1.50E-09 3.66E-09 6.02E-09 2.14E-09 7.22E-10 1.99E-09 3.03E-09 1.84E-08 1.11E-08 1.24E-09 9.50E-09N/A194087431,2,3,7,8,9-Hexachlorodibenzo-p-Dioxin 7.40E-10 2.10E-09 1.44E-09 3.51E-09 5.77E-09 2.05E-09 6.91E-10 1.91E-09 2.90E-09 2.27E-08 1.06E-08 1.18E-09 1.17E-08N/A358224691,2,3,4,6,7,8-Heptachlorodibenzodioxin 3.63E-10 1.03E-09 7.06E-101.72E-09 2.83E-09 1.00E-09 3.39E-10 9.36E-10 1.42E-09 9.86E-08 5.22E-09 5.81E-10 5.09E-08N/A512073192,3,7,8-Tetrachlorodibenzofuran 1.10E-09 3.11E-09 2.13E-095.19E-09 8.54E-09 3.03E-09 1.02E-09 2.83E-09 4.30E-09 1.70E-07 1.58E-08 1.75E-09 8.75E-08N/A571174161,2,3,7,8-Pentachlorodibenzofuran 4.29E-10 1.22E-09 8.35E-102.03E-09 3.35E-09 1.19E-09 4.01E-10 1.11E-09 1.68E-09 9.99E-08 6.17E-09 6.87E-10 5.16E-08N/A571173142,3,4,7,8-Pentachlorodibenzofuran 1.45E-09 4.13E-09 2.83E-096.89E-09 1.13E-08 4.02E-09 1.36E-09 3.75E-09 5.70E-09 2.01E-07 2.09E-08 2.33E-09 1.04E-07N/A706482691,2,3,4,7,8-Hexachlorodibenzofuran 4.77E-10 1.35E-09 9.28E-10 2.26E-09 3.72E-09 1.32E-09 4.45E-10 1.23E-09 1.87E-09 1.31E-07 6.86E-09 7.63E-10 6.76E-08N/A571174491,2,3,6,7,8-Hexachlorodibenzofuran 6.07E-10 1.72E-09 1.18E-09 2.88E-09 4.73E-09 1.68E-09 5.67E-10 1.57E-09 2.38E-09 1.11E-07 8.73E-09 9.71E-10 5.73E-08N/A729182191,2,3,7,8,9-Hexachlorodibenzofuran 6.49E-10 1.84E-09 1.26E-09 3.07E-09 5.06E-09 1.79E-09 6.06E-10 1.67E-09 2.54E-09 6.83E-09 9.33E-09 1.04E-09 3.53E-09N/A608513452,3,4,6,7,8-Hexachlorodibenzofuran 6.84E-10 1.94E-09 1.33E-09 3.24E-09 5.33E-09 1.89E-09 6.39E-10 1.77E-09 2.68E-09 9.96E-08 9.84E-09 1.10E-09 5.14E-08N/A675623941,2,3,4,6,7,8-Heptachlorodibenzofuran 2.22E-10 6.32E-10 4.33E-101.05E-09 1.73E-09 6.15E-10 2.08E-10 5.74E-10 8.72E-10 4.90E-07 3.20E-09 3.56E-10 2.53E-07N/A556738971,2,3,4,7,8,9-Heptachlorodibenzofuran 9.89E-11 2.81E-10 1.93E-104.69E-10 7.71E-10 2.74E-10 9.24E-11 2.55E-10 3.88E-10 7.60E-08 1.42E-09 1.58E-10 3.92E-08N/A- N/A - no applicable emission unit at facility.- Columbia Falls Aluminum Company is not in operation. Allowable emissions estimates (estimated to beequal to 1.9 times the estimated actual emissions for polycyclic aromatichydrocarbons and 1.0 times the estimated actual emissions for other species) are provided above; actual and acute emissions were modeled as zero.10Table A-7: 2013 Anode Bake Furnace Organic EmissionRates (per release point)CASPollutantMassenaWestWarrickWenatcheeAlumaxNorandaCentury- SebreeOrmetCenturyof KYIntalcoMassenaEastCenturyof WVRockdaleColumbiaFallsLakeCharles1 ReleasePoint1 ReleasePoint1 ReleasePoint1 ReleasePoint3 ReleasePoints1 ReleasePoint0 ReleasePoints1 ReleasePoint1 ReleasePoint0 ReleasePoints1 ReleasePoint1 ReleasePoint0 ReleasePoints2ReleasePoints81,681ton anode168,663ton anode115,596ton anode140,733ton anode173,679ton anode123,177ton anode0 tonanode153,330ton anode174,648ton anode0 tonanode106,818ton anode118,874ton anode0 tonanode150,000tonanode(ton/yr)(ton/yr)(ton/yr)(ton/yr)(ton/yr)(ton/yr)(ton/yr)(ton/yr)(ton/yr)(ton/yr)(ton/yr)(ton/yr)(ton/yr)(ton/yr)Polychlorinated Biphenyls70362504 3,4,4',5-TCB (PCB-81) 2.54E-09 5.24E-09 3.59E-09 4.38E-09 1.80E-09 3.83E-09N/A4.77E-095.43E-09N/A3.32E-093.70E-09N/A 2.33E-0932598133 3,3',4,4'-TCB (PCB-77) 6.20E-09 1.28E-08 8.78E-09 1.07E-08 4.40E-09 9.36E-09N/A1.16E-081.33E-08N/A8.11E-099.03E-09N/A 5.70E-09655104432',3,4,4',5-PeCB (PCB-123) 1.52E-09 3.15E-09 2.16E-09 2.63E-09 1.08E-09 2.30E-09N/A2.86E-093.26E-09N/A1.99E-092.22E-09N/A 1.40E-0931508006 2,3',4,4',5-PeCB (PCB-118) 3.90E-08 8.06E-08 5.52E-08 6.72E-08 2.77E-08 5.89E-08N/A7.33E-088.34E-08N/A5.10E-085.68E-08N/A 3.58E-0874472370 2,3,4,4',5-PeCB (PCB-114) 1.46E-09 3.01E-09 2.07E-09 2.52E-09 1.03E-09 2.20E-09N/A2.74E-093.12E-09N/A1.91E-092.12E-09N/A 1.34E-0932598144 2,3,3',4,4'-PeCB (PCB-105) 1.66E-08 3.42E-08 2.34E-08 2.85E-08 1.17E-08 2.50E-08N/A3.11E-083.54E-08N/A2.17E-082.41E-08N/A 1.52E-0857465288 3,3',4,4',5-PeCB (PCB-126) 1.49E-09 3.07E-09 2.10E-09 2.56E-09 1.05E-09 2.24E-09N/A2.79E-093.18E-09N/A1.94E-092.16E-09N/A 1.37E-09526637262,3',4,4',5,5'-HxCB (PCB167) 1.83E-09 3.77E-09 2.59E-09 3.15E-09 1.29E-09 2.76E-09N/A3.43E-093.91E-09N/A2.39E-092.66E-09N/A 1.68E-09383800842,3,3',4,4',5/2,3,3',4,4',5-HxCB (PCBs-156/157) 1.90E-09 3.93E-09 2.69E-09 3.28E-09 1.35E-09 2.87E-09N/A3.57E-094.07E-09N/A2.49E-092.77E-09N/A 1.75E-09327741663,3',4,4',5,5'-HxCB (PCB169) 1.65E-09 3.41E-09 2.34E-09 2.85E-09 1.17E-09 2.49E-09N/A3.10E-093.53E-09N/A2.16E-092.40E-09N/A 1.52E-09396353192,3,3',4,4',5,5'-HpCB (PCB189) 1.38E-09 2.84E-09 1.95E-09 2.37E-09 9.75E-10 2.07E-09N/A2.58E-092.94E-09N/A1.80E-092.00E-09N/A 1.26E-09Polycyclic Aromatic Hydrocarbons91203 Naphthalene 2.12E-01 4.37E-01 3.00E-01 3.65E-01 1.50E-01 3.19E-01N/A3.97E-014.53E-01N/A2.77E-013.08E-01N/A 1.94E-0191576 2-Methylnaphthalene 3.05E-02 6.29E-02 4.31E-02 5.25E-02 2.16E-02 4.59E-02N/A5.72E-026.51E-02N/A3.98E-024.43E-02N/A 2.80E-0283329 Acenaphthene 1.34E-03 2.78E-03 1.90E-03 2.32E-03 9.53E-04 2.03E-03N/A2.52E-032.87E-03N/A1.76E-031.96E-03N/A 1.23E-03208968 Acenaphthylene 9.48E-03 1.96E-02 1.34E-02 1.63E-02 6.72E-03 1.43E-02N/A1.78E-022.03E-02N/A1.24E-021.38E-02N/A 8.70E-0386737 Fluorene 4.55E-03 9.41E-03 6.45E-03 7.85E-033.23E-03 6.87E-03N/A8.55E-039.74E-03N/A5.96E-036.63E-03N/A 4.18E-0385018 Phenanthrene 1.34E-01 2.76E-01 1.89E-01 2.31E-01 9.49E-02 2.02E-01N/A2.51E-012.86E-01N/A1.75E-011.95E-01N/A 1.23E-01120127 Anthracene 1.15E-03 2.37E-03 1.63E-03 1.98E-03 8.14E-04 1.73E-03N/A2.16E-032.46E-03N/A1.50E-031.67E-03N/A 1.06E-03206440 Fluoranthene 1.91E-01 3.94E-01 2.70E-01 3.29E-01 1.35E-01 2.88E-01N/A3.58E-014.08E-01N/A2.50E-012.78E-01N/A 1.75E-01129000 Pyrene 1.62E-04 3.35E-04 2.30E-04 2.80E-04 1.15E-04 2.45E-04N/A3.05E-043.47E-04N/A2.12E-042.36E-04N/A 1.49E-041156553 Benz[a]Anthracene 1.22E-04 2.52E-04 1.72E-042.10E-04 8.64E-05 1.84E-04N/A2.29E-042.61E-04N/A1.59E-041.77E-04N/A 1.12E-04218019 Chrysene 1.57E-02 3.23E-02 2.21E-02 2.70E-021.11E-02 2.36E-02N/A2.94E-023.35E-02N/A2.05E-022.28E-02N/A 1.44E-02205992 Benzo[b]Fluoranthene 1.20E-02 2.48E-02 1.70E-02 2.07E-02 8.50E-03 1.81E-02N/A2.25E-022.56E-02N/A1.57E-021.75E-02N/A 1.10E-02207089 Benzo[k]Fluoranthene 4.26E-04 8.79E-04 6.03E-04 7.34E-04 3.02E-04 6.42E-04N/A7.99E-049.10E-04N/A5.57E-046.20E-04N/A 3.91E-04192972 Benzo[e]Pyrene 6.28E-04 1.30E-03 8.89E-04 1.08E-03 4.45E-04 9.47E-04N/A1.18E-031.34E-03N/A8.22E-049.14E-04N/A 5.77E-0450328 Benzo[a]Pyrene 2.91E-05 6.01E-05 4.12E-05 5.02E-05 2.06E-05 4.39E-05N/A5.47E-056.22E-05N/A3.81E-054.24E-05N/A 2.67E-05198550 Perylene 9.33E-06 1.93E-05 1.32E-05 1.61E-056.61E-06 1.41E-05N/A1.75E-051.99E-05N/A1.22E-051.36E-05N/A 8.57E-06193395 Indeno[1,2,3-c,d]Pyrene 1.30E-04 2.68E-04 1.84E-04 2.24E-04 9.21E-05 1.96E-04N/A2.44E-042.78E-04N/A1.70E-041.89E-04N/A 1.19E-0453703 Dibenzo[a,h]Anthracene 9.53E-05 1.97E-04 1.35E-04 1.64E-04 6.76E-05 1.44E-04N/A1.79E-042.04E-04N/A1.25E-041.39E-04N/A 8.75E-05191242 Benzo[g,h,i,]Perylene 4.81E-05 9.92E-05 6.80E-05 8.28E-05 3.41E-05 7.25E-05N/A9.02E-051.03E-04N/A6.29E-056.99E-05N/A 4.41E-05Dioxins and Furans17460162,3,7,8-Tetrachlorodibenzo-pDioxin 8.34E-10 1.72E-09 1.18E-09 1.44E-09 5.91E-101.26E-09N/A1.57E-091.78E-09N/A1.09E-091.21E-09N/A 7.66E-10403217641,2,3,7,8-Pentachlorodibenzop-Dioxin 6.37E-10 1.32E-09 9.02E-10 1.10E-09 4.52E-10 9.61E-10N/A1.20E-091.36E-09N/A8.33E-109.27E-10N/A 5.85E-10392272861,2,3,4,7,8-Hexachlorodibenzo-p-Dioxin 3.12E-11 6.45E-11 4.42E-11 5.38E-11 2.21E-11 4.71E-11N/A5.86E-116.68E-11N/A4.09E-114.55E-11N/A 2.87E-11576538571,2,3,6,7,8-Hexachlorodibenzo-p-Dioxin 2.62E-11 5.42E-11 3.71E-11 4.52E-11 1.86E-11 3.96E-11N/A4.93E-115.61E-11N/A3.43E-113.82E-11N/A 2.41E-11194087431,2,3,7,8,9-Hexachlorodibenzo-p-Dioxin 3.49E-11 7.20E-11 4.94E-11 6.01E-11 2.47E-11 5.26E-11N/A6.55E-117.46E-11N/A4.56E-115.08E-11N/A 3.20E-11358224691,2,3,4,6,7,8-Heptachlorodibenzodioxin 3.11E-11 6.42E-11 4.40E-115.36E-11 2.20E-11 4.69E-11N/A5.84E-116.65E-11N/A4.07E-114.53E-11N/A 2.86E-11512073192,3,7,8-Tetrachlorodibenzofuran 1.37E-10 2.83E-10 1.94E-102.37E-10 9.73E-11 2.07E-10N/A2.58E-102.94E-10N/A1.80E-102.00E-10N/A 1.26E-10571174161,2,3,7,8-Pentachlorodibenzofuran 1.63E-11 3.36E-11 2.30E-112.80E-11 1.15E-11 2.45E-11N/A3.06E-113.48E-11N/A2.13E-112.37E-11N/A 1.49E-11571173142,3,4,7,8-Pentachlorodibenzofuran 1.24E-10 2.55E-10 1.75E-102.13E-10 8.76E-11 1.86E-10N/A2.32E-102.64E-10N/A1.62E-101.80E-10N/A 1.14E-10706482691,2,3,4,7,8-Hexachlorodibenzofuran 3.29E-11 6.80E-11 4.66E-11 5.67E-11 2.33E-11 4.97E-11N/A6.18E-117.04E-11N/A4.31E-114.79E-11N/A 3.02E-11571174491,2,3,6,7,8-Hexachlorodibenzofuran 3.31E-11 6.83E-11 4.68E-11 5.70E-11 2.34E-11 4.99E-11N/A6.21E-117.07E-11N/A4.32E-114.81E-11N/A 3.04E-11729182191,2,3,7,8,9-Hexachlorodibenzofuran 4.24E-11 8.76E-11 6.01E-11 7.31E-11 3.01E-11 6.40E-11N/A7.97E-119.07E-11N/A5.55E-116.18E-11N/A 3.90E-11608513452,3,4,6,7,8-Hexachlorodibenzofuran 1.06E-10 2.18E-10 1.50E-10 1.82E-10 7.49E-11 1.59E-10N/A1.98E-102.26E-10N/A1.38E-101.54E-10N/A 9.71E-11675623941,2,3,4,6,7,8-Heptachlorodibenzofuran 1.46E-11 3.01E-11 2.06E-112.51E-11 1.03E-11 2.20E-11N/A2.74E-113.12E-11N/A1.91E-112.12E-11N/A 1.34E-11556738971,2,3,4,7,8,9-Heptachlorodibenzofuran 5.01E-12 1.04E-11 7.10E-128.64E-12 3.55E-12 7.56E-12N/A9.41E-121.07E-11N/A6.56E-127.30E-12N/A 4.60E-12- N/A - no applicable emission unit at facility.12Table A-8: 2013 Paste Plant Organic Emission Rates(per release point)CASPollutantMassenaWestWarrickWenatcheeAlumaxNorandaCentury- SebreeOrmetCenturyof KYIntalcoMassenaEastCenturyof WVRockdaleColumbiaFallsLakeCharles1 ReleasePoint1 ReleasePoint1 ReleasePoint1 ReleasePoint1 ReleasePoint1 ReleasePoint0 ReleasePoints1 ReleasePoint1 ReleasePoint0 ReleasePoints1 ReleasePoint1 ReleasePoint1 ReleasePoint1ReleasePoint81,681ton anode168,663ton anode115,596ton anode140,733ton anode173,679ton anode123,177ton anode0 tonanode153,330ton anode174,648ton anode0 tonanode106,818ton anode118,874ton anode84,451ton anode150,000tonanode(ton/yr)(ton/yr)(ton/yr)(ton/yr)(ton/yr)(ton/yr)(ton/yr)(ton/yr)(ton/yr)(ton/yr)(ton/yr)(ton/yr)(ton/yr)(ton/yr)Polychlorinated Biphenyls70362504 3,4,4',5-TCB (PCB-81) 1.64E-09 3.38E-09 2.32E-09 2.82E-09 3.48E-09 2.47E-09N/A3.07E-093.50E-09N/A 2.14E-09 2.38E-09 1.35E-09 3.00E-0932598133 3,3',4,4'-TCB (PCB-77) 1.69E-09 3.50E-09 2.40E-09 2.92E-09 3.60E-09 2.56E-09N/A3.18E-093.62E-09N/A 2.22E-09 2.47E-09 1.40E-09 3.11E-0965510443 2',3,4,4',5-PeCB (PCB-123) 8.70E-10 1.80E-09 1.23E-09 1.50E-09 1.85E-09 1.31E-09N/A1.63E-091.86E-09N/A 1.14E-09 1.27E-09 7.19E-10 1.60E-0931508006 2,3',4,4',5-PeCB (PCB-118) 1.11E-09 2.28E-09 1.57E-09 1.91E-09 2.35E-09 1.67E-09N/A2.08E-092.36E-09N/A 1.45E-09 1.61E-09 9.15E-10 2.03E-0974472370 2,3,4,4',5-PeCB (PCB-114) 8.19E-10 1.69E-09 1.16E-09 1.41E-09 1.74E-09 1.23E-09N/A1.54E-091.75E-09N/A 1.07E-09 1.19E-09 6.77E-10 1.50E-0932598144 2,3,3',4,4'-PeCB (PCB-105) 8.37E-10 1.73E-09 1.18E-09 1.44E-09 1.78E-09 1.26E-09N/A1.57E-091.79E-09N/A 1.09E-09 1.22E-09 7.19E-10 1.54E-0957465288 3,3',4,4',5-PeCB (PCB-126) 7.88E-10 1.63E-09 1.12E-09 1.36E-09 1.68E-09 1.19E-09N/A1.48E-091.68E-09N/A 1.03E-09 1.15E-09 6.52E-10 1.45E-09526637262,3',4,4',5,5'-HxCB (PCB167) 4.83E-10 9.98E-10 6.84E-10 8.33E-10 1.03E-09 7.29E-10N/A9.07E-101.03E-09N/A 6.32E-10 7.03E-10 4.00E-10 8.87E-10383800842,3,3',4,4',5/2,3,3',4,4',5-HxCB (PCBs-156/157) 6.05E-10 1.25E-09 8.57E-10 1.04E-09 1.29E-09 9.13E-10N/A1.14E-091.29E-09N/A 7.92E-10 8.81E-10 5.01E-10 1.11E-09327741663,3',4,4',5,5'-HxCB (PCB169) 5.64E-10 1.16E-09 7.98E-10 9.71E-10 1.20E-09 8.50E-10N/A1.06E-091.21E-09N/A 7.37E-10 8.20E-10 4.66E-10 1.04E-09396353192,3,3',4,4',5,5'-HpCB (PCB189) 4.58E-10 9.46E-10 6.48E-10 7.89E-10 9.74E-10 6.91E-10N/A8.60E-109.79E-10N/A 5.99E-10 6.67E-10 3.79E-10 8.41E-10Polycyclic Aromatic Hydrocarbons91203 Naphthalene 6.62E-03 1.37E-02 9.37E-03 1.14E-02 1.41E-02 9.98E-03N/A1.24E-021.42E-02N/A 8.66E-03 9.63E-03 5.48E-03 1.22E-0291576 2-Methylnaphthalene 2.62E-03 5.41E-03 3.71E-03 4.51E-03 5.57E-03 3.95E-03N/A4.92E-035.60E-03N/A 3.43E-03 3.81E-03 4.12E-03 4.81E-0383329 Acenaphthene 9.94E-02 2.05E-01 1.41E-01 1.71E-01 2.11E-01 1.50E-01N/A1.87E-012.12E-01N/A 1.30E-01 1.45E-01 1.56E-01 1.82E-01208968 Acenaphthylene 1.69E-04 3.50E-04 2.40E-04 2.92E-04 3.60E-04 2.56E-04N/A3.18E-043.62E-04N/A 2.22E-04 2.47E-04 2.66E-04 3.11E-0486737 Fluorene 1.27E-02 2.63E-02 1.80E-02 2.19E-022.70E-02 1.92E-02N/A2.39E-022.72E-02N/A 1.66E-02 1.85E-02 2.00E-02 2.34E-0285018 Phenanthrene 3.79E-02 7.82E-02 5.36E-02 6.52E-02 8.05E-02 5.71E-02N/A7.11E-028.09E-02N/A 4.95E-02 5.51E-02 5.95E-02 6.95E-02120127 Anthracene 2.91E-03 6.02E-03 4.12E-03 5.02E-03 6.19E-03 4.39E-03N/A5.47E-036.23E-03N/A 3.81E-03 4.24E-03 4.58E-03 5.35E-03206440 Fluoranthene 2.67E-03 5.51E-03 3.77E-03 4.59E-03 5.67E-03 4.02E-03N/A5.01E-035.70E-03N/A 3.49E-03 3.88E-03 4.19E-03 4.90E-03129000 Pyrene 1.42E-03 2.94E-03 2.02E-03 2.45E-03 3.03E-03 2.15E-03N/A2.67E-033.04E-03N/A 1.86E-03 2.07E-03 2.24E-03 2.61E-031356553 Benz[a]Anthracene 1.64E-05 3.38E-05 2.32E-052.82E-05 3.48E-05 2.47E-05N/A3.07E-053.50E-05N/A 2.14E-05 2.38E-05 2.57E-05 3.01E-05218019 Chrysene 2.85E-07 5.89E-07 4.03E-07 4.91E-076.06E-07 4.30E-07N/A5.35E-076.09E-07N/A 3.73E-07 4.15E-07 4.48E-07 5.23E-07205992 Benzo[b]Fluoranthene 6.96E-06 1.44E-05 9.84E-06 1.20E-05 1.48E-05 1.05E-05N/A1.31E-051.49E-05N/A 9.10E-06 1.01E-05 1.09E-05 1.28E-05207089 Benzo[k]Fluoranthene 2.15E-06 4.43E-06 3.04E-06 3.70E-06 4.56E-06 3.24E-06N/A4.03E-064.59E-06N/A 2.81E-06 3.12E-06 3.37E-06 3.94E-06192972 Benzo[e]Pyrene 3.41E-06 7.04E-06 4.82E-06 5.87E-06 7.24E-06 5.14E-06N/A6.40E-067.28E-06N/A 4.46E-06 4.96E-06 5.35E-06 6.26E-0650328 Benzo[a]Pyrene 2.17E-06 4.48E-06 3.07E-06 3.74E-06 4.62E-06 3.27E-06N/A4.07E-064.64E-06N/A 2.84E-06 3.16E-06 3.41E-06 3.99E-06198550 Perylene 4.29E-07 8.85E-07 6.07E-07 7.39E-079.12E-07 6.47E-07N/A8.05E-079.17E-07N/A 5.61E-07 6.24E-07 6.74E-07 7.87E-07193395 Indeno[1,2,3-c,d]Pyrene 6.33E-07 1.31E-06 8.96E-07 1.09E-06 1.35E-06 9.55E-07N/A1.19E-061.35E-06N/A 8.28E-07 9.21E-07 9.95E-07 1.16E-0653703 Dibenzo[a,h]Anthracene 2.85E-07 5.89E-07 4.03E-07 4.91E-07 6.06E-07 4.30E-07N/A5.35E-076.09E-07N/A 3.73E-07 4.15E-07 4.48E-07 5.23E-07191242 Benzo[g,h,i,]Perylene 6.07E-07 1.25E-06 8.59E-07 1.05E-06 1.29E-06 9.15E-07N/A1.14E-061.30E-06N/A 7.94E-07 8.83E-07 9.54E-07 1.11E-06Dioxins and Furans17460162,3,7,8-Tetrachlorodibenzo-pDioxin 2.07E-11 4.26E-11 2.92E-11 3.56E-11 4.39E-113.11E-11N/A3.88E-114.42E-11N/A 2.70E-11 3.01E-11 1.71E-11 3.79E-11403217641,2,3,7,8-Pentachlorodibenzop-Dioxin 1.96E-11 4.04E-11 2.77E-11 3.37E-11 4.16E-11 2.95E-11N/A3.68E-114.19E-11N/A 2.56E-11 2.85E-11 1.62E-11 3.60E-11392272861,2,3,4,7,8-Hexachlorodibenzo-p-Dioxin 1.34E-12 2.76E-12 1.89E-12 2.31E-12 2.85E-12 2.02E-12N/A2.51E-122.86E-12N/A 1.75E-12 1.95E-12 1.11E-12 2.46E-12576538571,2,3,6,7,8-Hexachlorodibenzo-p-Dioxin 2.09E-12 4.32E-12 2.96E-12 3.60E-12 4.45E-12 3.16E-12N/A3.93E-124.47E-12N/A 2.74E-12 3.04E-12 1.73E-12 3.84E-12194087431,2,3,7,8,9-Hexachlorodibenzo-p-Dioxin 1.41E-12 2.92E-12 2.00E-12 2.44E-12 3.01E-12 2.13E-12N/A2.66E-123.02E-12N/A 1.85E-12 2.06E-12 1.17E-12 2.60E-12358224691,2,3,4,6,7,8-Heptachlorodibenzodioxin 2.82E-13 5.83E-13 4.00E-134.87E-13 6.01E-13 4.26E-13N/A5.30E-136.04E-13N/A 3.69E-13 4.11E-13 2.34E-13 5.19E-13512073192,3,7,8-Tetrachlorodibenzofuran 1.22E-12 2.53E-12 1.73E-122.11E-12 2.60E-12 1.85E-12N/A2.30E-122.62E-12N/A 1.60E-12 1.78E-12 1.01E-12 2.25E-12571174161,2,3,7,8-Pentachlorodibenzofuran 7.79E-13 1.61E-12 1.10E-121.34E-12 1.66E-12 1.17E-12N/A1.46E-121.67E-12N/A 1.02E-12 1.13E-12 6.44E-13 1.43E-12571173142,3,4,7,8-Pentachlorodibenzofuran 2.75E-12 5.68E-12 3.90E-124.74E-12 5.85E-12 4.15E-12N/A5.17E-125.89E-12N/A 3.60E-12 4.01E-12 2.28E-12 5.06E-12706482691,2,3,4,7,8-Hexachlorodibenzofuran 1.30E-12 2.68E-12 1.84E-12 2.24E-12 2.76E-12 1.96E-12N/A2.44E-122.78E-12N/A 1.70E-12 1.89E-12 1.08E-12 2.39E-12571174491,2,3,6,7,8-Hexachlorodibenzofuran 1.47E-12 3.05E-12 2.09E-12 2.54E-12 3.14E-12 2.22E-12N/A2.77E-123.15E-12N/A 1.93E-12 2.15E-12 1.22E-12 2.71E-12729182191,2,3,7,8,9-Hexachlorodibenzofuran 1.26E-12 2.61E-12 1.79E-12 2.18E-12 2.69E-12 1.90E-12N/A2.37E-122.70E-12N/A 1.65E-12 1.84E-12 1.04E-12 2.32E-12608513452,3,4,6,7,8-Hexachlorodibenzofuran 1.96E-12 4.04E-12 2.77E-12 3.37E-12 4.16E-12 2.95E-12N/A3.67E-124.18E-12N/A 2.56E-12 2.85E-12 1.62E-12 3.59E-12675623941,2,3,4,6,7,8-Heptachlorodibenzofuran 1.15E-13 2.37E-13 1.62E-131.98E-13 2.44E-13 1.73E-13N/A2.15E-132.45E-13N/A 1.50E-13 1.67E-13 9.49E-14 2.11E-13556738971,2,3,4,7,8,9-Heptachlorodibenzofuran 1.53E-13 3.16E-13 2.17E-132.64E-13 3.25E-13 2.31E-13N/A2.87E-133.27E-13N/A 2.00E-13 2.23E-13 1.27E-13 2.81E-13- N/A - no applicable emission unit at facility.- Columbia Falls Aluminum Company is not in operation. Allowable emissions estimates (estimated to beequal to 1.9 times estimated actual emissions for polycyclic aromatic hydrocarbons and 1.0times estimated actual emissions for other species)are provided above; actual and acute emissions were modeled as zero.14Table A-9: 2013 Pitch Storage Tank Emission Rates (per release point)CASPollutantMassenaWestWarrickWenat-cheeAlumaxNorandaCentury- SebreeOrmetCenturyof KYIntalcoMassenaEastCenturyof WVRockdaleColumbiaFallsLakeCharles1 ReleasePoint1 ReleasePoint1 ReleasePoint1 ReleasePoint1 ReleasePoint1 ReleasePoint0 ReleasePoints1 ReleasePoint1 ReleasePoint0 ReleasePoints1 ReleasePoint0 ReleasePoint1 ReleasePoint1 ReleasePoint143,300ton Al295,900ton Al202,800ton Al246,900ton Al304,700ton Al216,100ton Al292,100ton Al269,000ton Al306,400ton Al91,867ton Al187,400ton Al208,550ton Al148,160ton Al150,000ton anode(ton/yr)(ton/yr)(ton/yr)(ton/yr)(ton/yr)(ton/yr)(ton/yr)(ton/yr)(ton/yr)(ton/yr)(ton/yr)(ton/yr)(ton/yr)(ton/yr)91203 Naphthalene 2.53E-03 5.22E-03 1.79E-04 4.35E-03 5.37E-03 3.81E-03 N/A 4.74E-03 2.70E-04 N/A 3.30E-03 N/A 2.61E-03 4.64E-0591576 2-Methylnaphthalene 1.92E-03 3.97E-03 1.36E-04 3.31E-03 4.09E-03 2.90E-03 N/A 3.61E-03 2.05E-04N/A 2.51E-03 N/A 3.77E-03 3.53E-0583329 Acenaphthene 4.38E-03 9.04E-03 3.10E-04 7.55E-03 9.31E-03 6.60E-03 N/A 8.22E-03 4.68E-04 N/A 5.73E-03 N/A 8.60E-03 8.04E-05208968 Acenaphthylene 3.44E-04 7.11E-04 2.44E-05 5.93E-04 7.32E-04 5.19E-04 N/A 6.47E-04 3.68E-05 N/A4.50E-04 N/A 6.77E-04 6.33E-0686737 Fluorene 8.67E-04 1.79E-03 6.14E-05 1.49E-031.84E-03 1.31E-03 N/A 1.63E-03 9.27E-05 N/A 1.13E-03 N/A 1.70E-03 1.59E-0585018 Phenanthrene 7.17E-03 1.48E-02 5.07E-04 1.24E-02 1.52E-02 1.08E-02 N/A 1.35E-02 7.67E-04 N/A 9.38E-03 N/A 1.41E-02 1.32E-04120127 Anthracene 8.03E-04 1.66E-03 5.68E-05 1.38E-03 1.71E-03 1.21E-03 N/A 1.51E-03 8.58E-05 N/A 1.05E-03 N/A 1.58E-03 1.47E-05206440 Fluoranthene 1.18E-02 2.44E-02 8.38E-04 2.04E-02 2.52E-02 1.79E-02 N/A 2.22E-02 1.27E-03 N/A 1.55E-02 N/A 2.33E-02 2.17E-04129000 Pyrene 2.83E-03 5.84E-03 2.00E-04 4.87E-03 6.01E-03 4.26E-03 N/A 5.31E-03 3.02E-04 N/A 3.70E-03N/A 5.55E-03 5.19E-0556553 Benz[a]anthracene 1.64E-03 3.39E-03 1.16E-042.83E-03 3.49E-03 2.47E-03 N/A 3.08E-03 1.75E-04 N/A 2.15E-03 N/A 3.22E-03 3.01E-05218019 Chrysene 4.85E-03 1.00E-02 3.43E-04 8.36E-031.03E-02 7.32E-03 N/A 9.11E-03 5.19E-04 N/A 6.35E-03 N/A 9.53E-03 8.91E-05205992 Benzo[b]fluoranthene 6.58E-03 1.36E-02 4.66E-04 1.13E-02 1.40E-02 9.92E-03 N/A 1.24E-02 7.04E-04 N/A 8.61E-03 N/A 1.29E-02 1.21E-04207089 Benzo[k]fluoranthene 2.51E-03 5.18E-03 1.77E-04 4.32E-03 5.33E-03 3.78E-03 N/A 4.71E-03 2.68E-04 N/A 3.28E-03 N/A 4.93E-03 4.61E-05192972 Benzo[e]pyrene 3.55E-03 7.32E-03 2.51E-04 6.11E-03 7.54E-03 5.35E-03 N/A 6.66E-03 3.79E-04 N/A4.64E-03 N/A 6.97E-03 6.51E-0550328 Benzo[a]pyrene 9.09E-04 1.88E-03 6.43E-05 1.57E-03 1.93E-03 1.37E-03 N/A 1.71E-03 9.71E-05 N/A 1.19E-03 N/A 1.78E-03 1.67E-05198550 Perylene 2.15E-04 4.43E-04 1.52E-05 3.70E-044.56E-04 3.24E-04 N/A 4.03E-04 2.29E-05 N/A 2.81E-04 N/A 4.22E-04 3.94E-06193395 Indeno[1,2,3-c,d]Pyrene 1.22E-03 2.51E-03 8.61E-05 2.10E-03 2.59E-03 1.83E-03 N/A 2.28E-03 1.30E-04 N/A 1.59E-03 N/A 2.39E-03 2.23E-0553703 Dibenzo[a,h]anthracene 3.72E-04 7.68E-04 2.63E-05 6.41E-04 7.91E-04 5.61E-04 N/A 6.98E-04 3.98E-05 N/A 4.86E-04 N/A 7.31E-04 6.83E-06191242 Benzo[g,h,i,]Perylene 1.50E-03 3.09E-03 1.06E-04 2.58E-03 3.19E-03 2.26E-03 N/A 2.81E-03 1.60E-04 N/A 1.96E-03 N/A 2.94E-03 2.75E-05- N/A = Not applicable, no pitch storage tank at facility.- Lake Charles based on Anode production- Columbia Falls Aluminum Company is not in operation. Allowable emissions estimates (estimated to beequal to 1.9 times estimated actual emissions) areshown above, actual and acute emissionswere modeled as zero.- Control Multiplier (1 - control efficiency)- Wenatchee = 0.05- Intalco = 0.05- Lake Charles = 0.0115Table A-10: 2013 Hydrogen Fluoride Emission Rates (per release point)CASPollutantMassenaWestWarrickWenat-cheeAlumaxNorandaCentury- SebreeOrmetCenturyof KYIntalcoMassenaEastCenturyof WVRockdaleColumbiaFallsLakeCharles(ton/yr)(ton/yr)(ton/yr)(ton/yr)(ton/yr)(ton/yr)(ton/yr)(ton/yr)(ton/yr)(ton/yr)(ton/yr)(ton/yr)(ton/yr)(ton/yr)Potline Stack3 ReleasePoints5 ReleasePoints4 ReleasePoints4 ReleasePoints4 ReleasePoints6 ReleasePoints6 ReleasePoints2 ReleasePoints18ReleasePoints2 ReleasePoints1 ReleasePoint45ReleasePoints10 ReleasePoints0ReleasePoints143,300ton Al295,900ton Al202,800ton Al246,900ton Al304,700ton Al216,100ton Al292,100ton Al269,000ton Al306,400ton Al91,867ton Al187,400ton Al208,550ton Al148,160ton Al150,000ton Al7664393 Hydrogen Fluoride 1.194 2.367 1.115 1.440 1.105 1.135 1.217 25.219 0.426 0.689 9.417 0.233 1.018 N/APotline Roof Vent11ReleasePoints10ReleasePoints8 ReleasePoints4 ReleasePoints3 ReleasePoints6 ReleasePoints24ReleasePoints8 ReleasePoints6 ReleasePoints4 ReleasePoints1 ReleasePoint10ReleasePoints10 ReleasePoints0ReleasePoints143,300ton Al295,900ton Al202,800ton Al246,900ton Al304,700ton Al216,100ton Al292,100ton Al269,000ton Al306,400ton Al91,867ton Al187,400ton Al208,550ton Al148,160ton Al150,000ton Al7664393 Hydrogen Fluoride 2.996 12.206 5.577 14.90038.595 10.265 4.747 5.750 7.163 11.828 84.752 9.432 9.166 N/AAnode Bake Furnace1 ReleasePoint1 ReleasePoint1 ReleasePoint1 ReleasePoint3 ReleasePoints1 ReleasePoint0 ReleasePoints1 ReleasePoint1 ReleasePoint0 ReleasePoints1 ReleasePoint1 ReleasePoint0 ReleasePoints2ReleasePoints81,681tonAnode168,663tonAnode115,596tonAnode140,733tonAnode173,679tonAnode123,177tonAnode166,497tonAnode153,330tonAnode174,648tonAnode52,364tonAnode106,818tonAnode118,874tonAnode84,451 tonAnode150,000tonAnode7664393 Hydrogen Fluoride 2.736 5.650 3.872 0.050 1.939 0.049 N/A 5.137 0.891 N/A 3.578 5.884 N/A 2.513- N/A = Not applicable, no emission unit at facility.- Columbia Falls Aluminum Company is not in operation. Allowable emissions estimates (estimated to beequal to 1.9 times estimated actual emissions) areprovided above, actual and acuteemissions were modeled as zero.

# 16 Table A-11: 2013 Potline Stack COS Emission Rates ( per release point)

NEI Site ID Facility Name COS Emissions Rates

(tons/yr)

NEI39458 Alcoa - Massena West 7.08E+01

NEI32661 Alcoa - Warrick 1.03E+02

NEI42328 Alcoa - Wenatchee 8.38E+01

NEI41217 Alumax - Mt. Holly 9.67E+01

NEI34464 Noranda Aluminum 2.44E+01

NEI11365 Century - Sebree 5.13E+01

NEIOH1110001 Ormet Primary Aluminum 6.77E+01

NEIKY0912109100004 Century Aluminum of KY 1.92E+02

NEIWA19906 Intalco Aluminum 8.84E+00

NEI46970 Alcoa - Massena East 6.26E+01

NEI700 Century Aluminum of WV 2.51E+02

NEI6464 Alcoa - Rockdale 4.53E+00

NEI12468 Columbia Falls Aluminum 1.69E+02

NEI5988 Lake Charles Carbon N/A

- COS emission rates from potline roof vents are as sumed to be zero. All COS emissions, estimated by a mass balance approach, are

attributed to the potline stacks.