Summary of Stack Gas Parameters and Test Results

Rio Tinto Alcan

US EPA Test Method 315 (Polycyclic Organic Matter)

Potline 3 163S A-398 Scrubber

Page 1 of 2

MB# 1641 MB# 1869 MB# 1869

RUN NUMBER Section 3 Section 4 Section 5

RUN DATE 4/18/2013 4/18/2013 4/17/2013 Average

RUN TIME 10:41-15:35 10:37-15:32 10:28-14:38 Runs 1-3

MEASURED DATA

DH@ Orifice Meter Calibration Coef., in. H2O 1.7306 1.7832 1.7832 1.7657

Pstatic Stack Static Pressure, inches H2O -0.14 -0.14 -0.14 -0.14

y Meter Box Correction Factor 1.0042 1.0075 1.0075 1.0064

Pbar Barometric Pressure, inches Hg 29.82 29.82 29.82 29.82

Vm Sample Volume, ft3

172.854 165.987 157.697 165.513

Dp

1/2 Average Square Root Dp, (in. H2O)1/2 0.6202 0.6218 0.6062 0.6161

DH Avg Meter Orifice Pressure, in. H2O 1.470 1.490 1.430 1.463

Tm Average Meter Temperature, °F 103.05 85.60 95.00 94.55

Ts Average Stack Temperature, °F 213.50 215.30 217.40 215.40

Vlc Condensate Collected, ml 59.3 53.6 74.7 62.5

CO2wet Carbon Dioxide content, % by volume, wet, if measured - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

O2wet Oxygen content, % by volume, wet, if measured - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

CO2dry Carbon Dioxide content, % by volume, dry 0.5 0.5 0.5 0.5

O2dry Oxygen content, % by volume, dry 19.5 19.5 19.5 19.5

N2 Nitrogen content, % by volume 80.0 80.0 80.0 80.0

Cp Pitot Tube Coefficient 0.84 0.84 0.84 0.84

Circular Stack? 1=Y,0=N: 0 0 0

De/As Stack Dim- Circular (Dia-in) or Rectangular (Area-in2

): 2880.00 2880.00 2880.00 2880.00

Q Sample Run Duration, minutes 240.0 240.0 240.0 240.0

Dn Nozzle Diameter, inches 0.260 0.260 0.260 0.260

CALCULATED DATA

An Nozzle Area, ft2

0.000369 0.000369 0.000369 0.000369

Vm(std) Standard Meter Volume, ft3

162.819 161.889 151.176 158.628

Vm(std) Standard Meter Volume, m3

4.611 4.584 4.281 4.492

Qm Average Sampling Rate, dscfm 0.678 0.675 0.630 0.661

Ps Stack Pressure, inches Hg 29.81 29.81 29.81 29.81

Bws Moisture, % by volume 1.7 1.5 2.3 1.8

Bws(sat) Moisture (at saturation), % by volume 103.4 107.1 111.6 107.4

1-Bws Dry Mole Fraction 0.983 0.985 0.977 0.982

Md Molecular Weight (d.b.), lb/lb•mole 28.86 28.86 28.86 28.86

Ms Molecular Weight (w.b.), lb/lb•mole 28.68 28.69 28.61 28.66

Vs Stack Gas Velocity, ft/s 39.5 39.7 38.8 39.3

A Stack Area, ft220.0 20.0 20.0 20.00

Qa Stack Gas Volumetric Flow, acfm 47,442 47,614 46,553 47,203

Qs Stack Gas Volumetric Flow, dscfm 36,430 36,521 35,329 36,093

Qs Stack Gas Volumetric Flow, dscmm 1,032 1,034 1,000 1,022

I Isokinetic Sampling Ratio, % 101.0 100.1 96.7 99.3

Project # 13661-21

Page 1 of 2
Summary of Stack Gas Parameters and Test Results

Project # 13661-21

Rio Tinto Alcan

US EPA Test Method 315 (Polycyclic Organic Matter)

Potline 3 163S A-398 Scrubber

Page 2 of 2

RUN NUMBER Section 3 Section 4 Section 5

RUN DATE 4/18/2013 4/18/2013 4/17/2013 Average

RUN TIME 10:41-15:35 10:37-15:32 10:28-14:38

EMISSIONS DATA

Particulate Matter

PM Filter Weight Gain, mg 9.90 9.40 11.40 10.23

PM Beaker Weight Gain, mg 2.20 5.10 9.00 5.43

PM Total Catch, g 0.0121 0.0145 0.0204 0.0157

CPM-1 Concentration, gr/dscf 1.15E-03 1.38E-03 2.08E-03 1.54E-03

CPM-2 Concentration, lb/dscf 1.64E-07 1.97E-07 2.97E-07 2.20E-07

EPM-1 Emission Rate, lb/hr 0.358 0.433 0.631 0.474

EPM-2 Emission Rate, lb/ton aluminum 0.0799 0.0966 0.1404 0.106

Methylene Chloride Extractable Matter

Filter Weight Gain, mg 0.4 1.1 0.8 0.77

Front-half Weight Gain, mg 1.5 3.2 1.5 2.07

Impinger Weight Gain, mg 0.7 0.5 0.5 0.57

Back-half Weight Gain, mg 2.5 2.3 2.4 2.40

Total Acetone Blank, mg 0.1 0.1 0.2

Total MeCl Blank, mg 0.2 0.2 0.2

Total Filter Blank, mg 0.5 0.5 0.5

MCEM Total Catch, g 0.0043 0.0063 0.0043 0.0050

CMCEM-1 Concentration, gr/dscf 4.08E-04 6.01E-04 4.39E-04 4.82E-04

CMCEM-2 Concentration, lb/dscf 5.82E-08 8.58E-08 6.27E-08 6.89E-08

EMCEM-1 Emission Rate, lb/hr 0.127 0.188 0.133 0.149

EMCEM-2 Emission Rate, lb/ton aluminum 0.0284 0.0420 0.0296 0.033

Production: Tons aluminum per hour 4.480 4.480 4.490 4.483

Page 2 of 2


Summary of Stack Gas Parameters and Test Results

Rio Tinto Alcan

US EPA Test Methods 5 (Filterable Particulate Matter - PM) & 29 (Metallic HAPS)

Room 6 Roof Monitor Sampling Manifold (aka Downcomer)

Page 1 of 3

1534

RUN NUMBER 1 2 3

RUN DATE 4/16-17/13 4/17-18/13 4/18-19/13 Average

RUN TIME 14:03-14:15 15:08-15:19 16:16-16:25 Runs 1-3

MEASURED DATA

DH@ Orifice Meter Calibration Coef., in. H2O 1.6095 1.6095 1.6095 1.6095

Pstatic Stack Static Pressure, inches H2O 0.43 0.43 0.43 0.43

y Meter Box Correction Factor 1.0032 1.0032 1.0032 1.0032

Pbar Barometric Pressure, inches Hg 29.70 29.68 29.62 29.67

Vm Sample Volume, ft3

1423.922 822.621 831.070 1025.871

Dp

1/2 Average Square Root Dp, (in. H2O)1/2 0.8293 0.8595 0.8713 0.8534

DH Avg Meter Orifice Pressure, in. H2O 2.800 0.878 0.918 1.532

Tm Average Meter Temperature, °F 95.08 94.71 75.35 88.38

Ts Average Stack Temperature, °F 106.00 113.92 79.83 99.92

Vlc Condensate Collected, ml 306.9 269.7 212.8 263.1

CO2 Carbon Dioxide content, dry % by volume 0.5 0.5 0.0 0.3

O2 Oxygen content, dry % by volume 20.0 20.0 20.0 20.0

N2 Nitrogen content, dry % by volume 79.5 79.5 80.0 79.7

Cp Pitot Tube Coefficient 0.84 0.84 0.84 0.84

Circular Stack? 1=Y,0=N: 1 1 1

As Diameter or Dimensions, inches: 14.00 14.00 14.00 14.00

Q Sample Run Duration, minutes 1440.0 1440.0 1440.0 1440.0

Dn Nozzle Diameter, inches 0.258 0.190 0.190 0.213

CALCULATED DATA

An Nozzle Area, ft2

0.000363 0.000197 0.000197 0.000252

Vm(std) Standard Meter Volume, ft3

1358.140 780.912 815.887 984.979

Vm(std) Standard Meter Volume, m3

38.458 22.113 23.103 27.892

Qm Average Sampling Rate, dscfm 0.943 0.542 0.567 0.684

Ps Stack Pressure, inches Hg 29.73 29.71 29.65 29.70

Bws Moisture, % by volume 1.1 1.6 1.2 1.3

Bws(sat) Moisture (at saturation), % by volume 7.8 9.8 3.5 7.0

Vwstd Standard Water Vapor Volume, ft3

14.470 12.716 10.034 12.407

1-Bws Dry Mole Fraction 0.989 0.984 0.988 0.987

Md Molecular Weight (d.b.), lb/lb•mole 28.88 28.88 28.80 28.85

Ms Molecular Weight (w.b.), lb/lb•mole 28.77 28.71 28.67 28.71

Vs Stack Gas Velocity, ft/s 48.4 50.6 49.9 49.6

A Stack Area, ft21.1 1.1 1.1 1.07

Qa Stack Gas Volumetric Flow, acfm 3,107 3,247 3,198 3,184

Qs Stack Gas Volumetric Flow, dscfm 2,850 2,919 3,062 2,944

Qs Stack Gas Volumetric Flow, dscmm 81 83 87 83

I Isokinetic Sampling Ratio, % 97.4 100.8 100.4 99.5

Ts - Roof Average Roof Temperature, °F 105.8 113.3 79.0 99.4

Vs - Roof Stack Gas Velocity, ft/min (*) 268.0 277.5 238.2 261.2

A - Roof Roof Area, ft2 (**) 4,252 4,252 4,252 4,252

Qa - Roof Stack Gas Volumetric Flow, acfm 1,139,559 1,199,416 1,074,356 1,137,777

Qs - Roof Stack Gas Volumetric Flow, dscfm 1,042,924 1,069,617 1,018,743 1,043,761

Qs - Roof Stack Gas Volumetric Flow, dscmm 29,532 30,288 28,848 29,556

(*) measured by plant roof-mounted anemometers

(**) as reported by Alcan

Project # 13661-21

Page 1 of 4
Summary of Stack Gas Parameters and Test Results

Project # 13661-21

Rio Tinto Alcan

US EPA Test Methods 5 (Filterable Particulate Matter - PM) & 29 (Metallic HAPS)

Room 6 Roof Monitor Sampling Manifold (aka Downcomer)

Page 2 of 3

RUN NUMBER 1 2 3

RUN DATE 4/16-17/13 4/17-18/13 4/18-19/13 Average

RUN TIME 14:03-14:15 15:08-15:19 16:16-16:25

EMISSIONS DATA

Particulate Matter

PM Filter Weight Gain, mg 16.10 35.40 50.40 33.97

PM Beaker Weight Gain, mg 24.80 66.40 18.30 36.50

PM Total Catch, g 0.0409 0.1018 0.0687 0.0705

CPM-1 Concentration, gr/dscf 4.65E-04 2.01E-03 1.30E-03 1.26E-03

CPM-2 Concentration, lb/dscf 6.64E-08 2.87E-07 1.86E-07 1.80E-07

EPM-1 Emission Rate, lb/hr 4.154 18.444 11.347 11.315

EPM-2 Emission Rate, lb/ton aluminum 1.8464 8.0541 4.9120 4.937

Antimony (Sb)

Sb mg/sample (front half) 4.3 6.6 3.7 4.87

Sb mg/sample (back half) 1.00 0.86 0.92 0.93

Sb g/sample 5.30E-06 7.46E-06 4.62E-06 5.79E-06

CSb-1 Concentration, gr/dscf 6.02E-08 1.47E-07 8.74E-08 9.83E-08

CSb-2 Concentration, lb/dscf 8.60E-12 2.11E-11 1.25E-11 1.40E-11

ESb-1 Emission Rate, lb/hr 5.38E-04 1.35E-03 7.63E-04 8.84E-04

ESb-2 Emission Rate, lb/ton aluminum 2.39E-04 5.90E-04 3.30E-04 3.87E-04

Arsenic (As)

As mg/sample (front half) 16.7 22.6 12.7 17.33

As mg/sample (back half) 0.25 0.28 0.25 0.26

As g/sample 1.70E-05 2.29E-05 1.30E-05 1.76E-05

CAs-1 Concentration, gr/dscf 1.93E-07 4.52E-07 2.45E-07 2.97E-07

CAs-2 Concentration, lb/dscf 2.75E-11 6.46E-11 3.50E-11 4.24E-11

EAs-1 Emission Rate, lb/hr 1.72E-03 4.15E-03 2.14E-03 2.67E-03

EAs-2 Emission Rate, lb/ton aluminum 7.65E-04 1.81E-03 9.26E-04 1.17E-03

Beryllium (Be)

Be mg/sample (front half) 4.7 5.4 3.8 4.63

Be mg/sample (back half) 0.015 0.015 0.015 0.02

Be g/sample 4.72E-06 5.42E-06 3.82E-06 4.65E-06

CBe-1 Concentration, gr/dscf 5.36E-08 1.07E-07 7.22E-08 7.76E-08

CBe-2 Concentration, lb/dscf 7.65E-12 1.53E-11 1.03E-11 1.11E-11

EBe-1 Emission Rate, lb/hr 4.79E-04 9.81E-04 6.30E-04 6.97E-04

EBe-2 Emission Rate, lb/ton aluminum 2.13E-04 4.28E-04 2.73E-04 3.05E-04

Cadmium (Cd)

Cd mg/sample (front half) 2.0 3.3 0.94 2.08

Cd mg/sample (back half) 1.1 0.12 0.30 0.51

Cd g/sample 3.10E-06 3.42E-06 1.24E-06 2.59E-06

CCd-1 Concentration, gr/dscf 3.52E-08 6.76E-08 2.35E-08 4.21E-08

CCd-2 Concentration, lb/dscf 5.03E-12 9.65E-12 3.35E-12 6.01E-12

ECd-1 Emission Rate, lb/hr 3.15E-04 6.20E-04 2.05E-04 3.80E-04

ECd-2 Emission Rate, lb/ton aluminum 1.40E-04 2.71E-04 8.87E-05 1.66E-04

Chromium (Cr)

Cr mg/sample (front half) 10.7 10.8 9.2 10.23

Cr mg/sample (back half) 6.7 6.9 6.6 6.73

Cr g/sample 1.74E-05 1.77E-05 1.58E-05 1.70E-05

CCr-1 Concentration, gr/dscf 1.98E-07 3.50E-07 2.99E-07 2.82E-07

CCr-2 Concentration, lb/dscf 2.82E-11 5.00E-11 4.27E-11 4.03E-11

ECr-1 Emission Rate, lb/hr 1.77E-03 3.21E-03 2.61E-03 2.53E-03

ECr-2 Emission Rate, lb/ton aluminum 7.86E-04 1.40E-03 1.13E-03 1.11E-03

Page 2 of 4
Summary of Stack Gas Parameters and Test Results

Project # 13661-21

Rio Tinto Alcan

US EPA Test Methods 5 (Filterable Particulate Matter - PM) & 29 (Metallic HAPS)

Room 6 Roof Monitor Sampling Manifold (aka Downcomer)

Page 3 of 3

RUN NUMBER 1 2 3

RUN DATE 4/16-17/13 4/17-18/13 4/18-19/13 Average

RUN TIME 14:03-14:15 15:08-15:19 16:16-16:25

Cobalt (Co)

Co mg/sample (front half) 0.18 0.081 0.081 0.11

Co mg/sample (back half) 0.32 0.14 1.00 0.49

Co g/sample 5.00E-07 2.21E-07 1.08E-06 6.01E-07

CCo-1 Concentration, gr/dscf 5.68E-09 4.37E-09 2.04E-08 1.02E-08

CCo-2 Concentration, lb/dscf 8.12E-13 6.24E-13 2.92E-12 1.45E-12

ECo-1 Emission Rate, lb/hr 5.08E-05 4.00E-05 1.79E-04 8.98E-05

ECo-2 Emission Rate, lb/ton aluminum 2.26E-05 1.75E-05 7.73E-05 3.91E-05

Lead (Pb)

Pb mg/sample (front half) 5.7 7.9 0.95 4.85

Pb mg/sample (back half) 0.91 0.27 0.6 0.59

Pb g/sample 6.61E-06 8.17E-06 1.53E-06 5.44E-06

CPb-1 Concentration, gr/dscf 7.51E-08 1.61E-07 2.89E-08 8.85E-08

CPb-2 Concentration, lb/dscf 1.07E-11 2.31E-11 4.13E-12 1.26E-11

EPb-1 Emission Rate, lb/hr 6.71E-04 1.48E-03 2.53E-04 8.01E-04

EPb-2 Emission Rate, lb/ton aluminum 2.98E-04 6.46E-04 1.09E-04 3.51E-04

Manganese (Mn)

Mn mg/sample (front half) 3.4 4.1 7.1 4.87

Mn mg/sample (back half) 0.84 0.79 0.75 0.79

Mn g/sample 4.24E-06 4.89E-06 7.85E-06 5.66E-06

CMn-1 Concentration, gr/dscf 4.82E-08 9.66E-08 1.48E-07 9.78E-08

CMn-2 Concentration, lb/dscf 6.88E-12 1.38E-11 2.12E-11 1.40E-11

EMn-1 Emission Rate, lb/hr 4.31E-04 8.86E-04 1.30E-03 8.71E-04

EMn-2 Emission Rate, lb/ton aluminum 1.91E-04 3.87E-04 5.61E-04 3.80E-04

Nickel (Ni)

Ni mg/sample (front half) 175.0 186.0 102.0 154.33

Ni mg/sample (back half) 1.7 0.87 1.90 1.49

Ni g/sample 1.77E-04 1.87E-04 1.04E-04 1.56E-04

CNi-1 Concentration, gr/dscf 2.01E-06 3.69E-06 1.97E-06 2.56E-06

CNi-2 Concentration, lb/dscf 2.87E-10 5.28E-10 2.81E-10 3.65E-10

ENi-1 Emission Rate, lb/hr 1.79E-02 3.39E-02 1.72E-02 2.30E-02

ENi-2 Emission Rate, lb/ton aluminum 7.98E-03 1.48E-02 7.43E-03 1.01E-02

Selenium (Se)

Se mg/sample (front half) 2.4 2.2 2.0 2.20

Se mg/sample (back half) 0.35 0.35 0.40 0.37

Se g/sample 2.75E-06 2.55E-06 2.40E-06 2.57E-06

CSe-1 Concentration, gr/dscf 3.12E-08 5.04E-08 4.54E-08 4.23E-08

CSe-2 Concentration, lb/dscf 4.46E-12 7.20E-12 6.48E-12 6.05E-12

ESe-1 Emission Rate, lb/hr 2.79E-04 4.62E-04 3.96E-04 3.79E-04

ESe-2 Emission Rate, lb/ton aluminum 1.24E-04 2.02E-04 1.72E-04 1.66E-04

Mercury (Hg)

Hg mg/sample (front half) 0.08 0.08 0.08 0.08

Hg mg/sample (back half) 0.12 0.12 0.12 0.12

Hg g/sample 2.00E-07 2.00E-07 2.00E-07 2.00E-07

CHg-1 Concentration, gr/dscf 2.27E-09 3.95E-09 3.78E-09 3.34E-09

CHg-2 Concentration, lb/dscf 3.25E-13 5.65E-13 5.40E-13 4.77E-13

EHg-1 Emission Rate, lb/hr 2.03E-05 3.62E-05 3.30E-05 2.99E-05

EHg-2 Emission Rate, lb/ton aluminum 9.03E-06 1.58E-05 1.43E-05 1.31E-05

Production: Tons of Aluminum per hour 2.250 2.290 2.310 2.283

Page 3 of 4
Italics Below Detection Level

Bold

Method blank contamination. The 

associated method blank contains the 

target analyte at a reportable level

Metallic HAPS Legend

Page 4 of 4
Summary of Stack Gas Parameters and Test Results

Rio Tinto Alcan

US EPA Test Method 315 (Polycyclic Organic Matter)

Room 6 Roof Monitor Sampling Manifold (aka Downcomer)

Page 1 of 2

1311

RUN NUMBER 1 2 3

RUN DATE 4/16-17/13 4/17-18/13 4/18-19/13 Average

RUN TIME 14:04-14:14 15:09-15:18 16:15-16:24 Runs 1-3

MEASURED DATA

DH@ Orifice Meter Calibration Coef., in. H2O 1.7411 1.7411 1.7411 1.7411

Pstatic Stack Static Pressure, inches H2O 0.43 0.43 0.43 0.43

y Meter Box Correction Factor 0.9952 0.9952 0.9952 0.9952

Pbar Barometric Pressure, inches Hg 29.54 29.33 29.25 29.37

Vm Sample Volume, ft3

1382.054 557.047 561.986 833.696

Dp

1/2 Average Square Root Dp, (in. H2O)1/2 0.7941 0.8461 0.8715 0.8372

DH Avg Meter Orifice Pressure, in. H2O 2.754 0.405 0.443 1.201

Tm Average Meter Temperature, °F 87.46 87.42 69.58 81.49

Ts Average Stack Temperature, °F 105.50 112.63 78.25 98.79

Vlc Condensate Collected, ml 277.3 175.4 179.2 210.6

CO2 Carbon Dioxide content, dry % by volume 0.5 0.5 0.0 0.3

O2 Oxygen content, dry % by volume 20.0 20.0 20.0 20.0

N2 Nitrogen content, dry % by volume 79.5 79.5 80.0 79.7

Cp Pitot Tube Coefficient 0.84 0.84 0.84 0.84

Circular Stack? 1=Y,0=N: 1 1 1

As Diameter or Dimensions, inches: 14.00 14.00 14.00 14.00

Q Sample Run Duration, minutes 1440.0 1440.0 1440.0 1440.0

Dn Nozzle Diameter, inches 0.258 0.155 0.155 0.189

CALCULATED DATA

An Nozzle Area, ft2

0.000363 0.000131 0.000131 0.000208

Vm(std) Standard Meter Volume, ft3

1318.664 524.697 545.737 796.366

Vm(std) Standard Meter Volume, m3

37.340 14.858 15.454 22.551

Qm Average Sampling Rate, dscfm 0.916 0.364 0.379 0.553

Ps Stack Pressure, inches Hg 29.57 29.36 29.28 29.40

Bws Moisture, % by volume 1.0 1.6 1.5 1.4

Bws(sat) Moisture (at saturation), % by volume 7.7 9.5 3.3 6.8

Vwstd Standard Water Vapor Volume, ft3

13.075 8.270 8.449 9.931

1-Bws Dry Mole Fraction 0.990 0.984 0.985 0.986

Md Molecular Weight (d.b.), lb/lb•mole 28.88 28.88 28.80 28.85

Ms Molecular Weight (w.b.), lb/lb•mole 28.77 28.71 28.64 28.71

Vs Stack Gas Velocity, ft/s 46.5 50.1 50.1 48.9

A Stack Area, ft21.1 1.1 1.1 1.07

Qa Stack Gas Volumetric Flow, acfm 2,982 3,212 3,216 3,137

Qs Stack Gas Volumetric Flow, dscfm 2,725 2,861 3,041 2,875

Qs Stack Gas Volumetric Flow, dscmm 77 81 86 81

I Isokinetic Sampling Ratio, % 98.9 103.9 101.6 101.5

Ts - Roof Average Roof Temperature, °F 105.8 113.3 79.0 99.4

Vs - Roof Stack Gas Velocity, ft/min (*) 268.0 282.1 252.7 267.6

A - Roof Roof Area, ft2 (**) 4,252 4,252 4,252 4,252

Qa - Roof Stack Gas Volumetric Flow, acfm 1,139,559 1,199,416 1,074,356 1,137,777

Qs - Roof Stack Gas Volumetric Flow, dscfm 1,042,924 1,069,617 1,018,743 1,043,761

Qs - Roof Stack Gas Volumetric Flow, dscmm 29,532 30,288 28,848 29,556

(*) measured by plant roof-mounted anemometers

(**) as reported by Alcan

Project # 13661-21

Page 1 of 2
Summary of Stack Gas Parameters and Test Results

Project # 13661-21

Rio Tinto Alcan

US EPA Test Method 315 (Polycyclic Organic Matter)

Room 6 Roof Monitor Sampling Manifold (aka Downcomer)

Page 2 of 2

RUN NUMBER 1 2 3

RUN DATE 4/16-17/13 4/17-18/13 4/18-19/13 Average

RUN TIME 14:04-14:14 15:09-15:18 16:15-16:24

EMISSIONS DATA

Particulate Matter

PM Filter Weight Gain, mg 22.60 25.60 15.30 21.17

PM Beaker Weight Gain, mg 23.40 20.70 14.50 19.53

PM Total Catch, g 0.0460 0.0463 0.0298 0.0407

CPM-1 Concentration, gr/dscf 5.38E-04 1.36E-03 8.43E-04 9.14E-04

CPM-2 Concentration, lb/dscf 7.69E-08 1.95E-07 1.20E-07 1.31E-07

EPM-1 Emission Rate, lb/hr 4.81 12.48 7.36 8.218

EPM-2 Emission Rate, lb/ton aluminum 2.1388 5.4518 3.1854 3.5920

Methylene Chloride Extractable Matter

Filter Weight Gain, mg 0.7 1.5 1.3 1.17

Front-half Weight Gain, mg 1.2 2.0 2.2 1.80

Impinger Weight Gain, mg 0.5 0.5 0.9 0.63

Back-half Weight Gain, mg 2.9 2.8 2.5 2.73

Total Acetone Blank, mg 0.1 0.2 0.1

Total MeCl Blank, mg 0.2 0.2 0.2

Total Filter Blank, mg 0.5 0.5 0.5

MCEM Total Catch, g 0.0045 0.0059 0.0061 0.0055

CMCEM-1 Concentration, gr/dscf 5.27E-05 1.74E-04 1.72E-04 1.33E-04

CMCEM-2 Concentration, lb/dscf 7.52E-09 2.48E-08 2.46E-08 1.90E-08

EMCEM-1 Emission Rate, lb/hr 0.47 1.59 1.51 1.19

EMCEM-2 Emission Rate, lb/ton aluminum 0.21 0.69 0.65 0.52

Production: Tons of Aluminum per hour 2.250 2.290 2.310 2.283

Page 2 of 2