METHODS 1, 2, 3, 4, AND 29 ALCOA WENATCHEE WORKS Lb. / Hr. are per Room Roof Monitor File Name: Room 20 Monitor Lab #: Chester Front-Half Particulate Matter Mass Loading Client: ALCOA Start Time: 1504 hours Filter Number: Location: Wenatchee, Washington Stop Time: 1516 hours Tare Weight of Filter (grams): Sample Site: Room 20 Sample Length: 2880 minutes Final Weight of Filter (grams): Sample Date: April 8-10, 2013 Net Weight of Particulate Matter (grams): 0.03600 Run #: 1 - Method 29 Operators: CS,JF,JK Beaker Number: Tare Weight of Beaker (grams): Impinger Weights Final Weight of Beaker (grams): Final Initial Net Pitot Tube Cp: 0.8443 Net Weight of Particulate Matter (grams): 0.0133 grams grams grams Nozzle Diameter: 0.1530 inches Volume of Acetone (milliliters): 52 756.4 g 770.7 g -14.3 g Nozzle Area: 0.0001 ft2 Wt./Vol. of Acetone Blank (milligrams/ml): 0.0000 820.6 g 807.1 g 13.5 g Stack Diameter: 15.0 inches Net Weight of PM Due to Acetone (grams): 0.0000 796.0 g 780.1 g 15.9 g Stack Area: 1.23 ft2 2177.1 g 2174.0 g 3.1 g Meter Temperature: 80.8 °F Total Front-Half Particulate Matter (grams): 0.04930 1852.1 g 1780.1 g 72.0 g Barometric Pressure: 29.50 inches Hg Particulate Concentration (gr/dscf): 0.0007 1816.3 g 1794.3 g 22.0 g Static Pressure: -3.0 inches H2O Particulate Concentration (mg/dscm): 1.62 Total H2O Gain: 112.2 g Stack Pressure: 29.28 inches Hg Particulate Emission Rate (lb/hr): 5.478 Total Volume (scf): 5.29 Orifice Pressure: 0.412 inches H2O Percent Moisture: 0.49 Meter Pressure: 29.53 inches Hg Bws: 0.0049 Average Conc. CO2: 0.1 percent Initial Meter Volume: 353.554 Average Conc. O2: 20.9 percent Leak Check Volume 0.120 Molecular Weight: 28.85 g/g-mole-dry Final Meter Volume: 1483.310 Molecular Weight: 28.80 g/g-mole-wet Volume Sampled: 1129.636 Standard Volume (dscf): 1073.348 Roof Monitor Area: 8840.00 sq. feet Standard Volume (dscm): 30.398 Y Factor: 0.98600 Y Factor Cal. Check: 0.988 DH @: 1.60900 Percent Error (%): 0.2
Sample Velocity Temperature Sample Velocity Temperature Point (" of H2O) °F Point (" of H2O) °F 1 0.64 94 1 0.65 104 1 0.62 99 1 0.65 99 2 0.61 87 2 0.64 99 2 0.62 95 2 0.65 92 3 0.64 87 3 0.72 90 3 0.65 86 3 0.73 86 4 0.68 82 4 0.73 84 4 0.70 84 4 0.75 83 5 0.76 77 5 0.82 86 5 0.76 78 5 0.82 88 6 0.83 72 6 0.86 80 6 0.83 73 6 0.85 79 7 0.91 77 7 0.78 83 7 0.91 79 7 0.78 85 8 0.96 75 8 0.78 80 8 0.96 73 8 0.80 77 9 0.92 76 9 0.80 83 9 0.92 77 9 0.79 87 Stack and Process Data Parameters 10 0.97 81 10 0.80 84 Percent Isokinetics (%): 100 10 0.99 86 10 0.78 93 Stack Gas Temperature (°F): 86.1 11 0.97 92 11 0.79 86 Stack Gas Temperature (°R): 546.1 11 0.98 94 11 0.78 87 Average Velocity Head (" of H2O): 0.789 12 0.95 101 12 0.78 96 Stack Gas Velocity (ft/second): 51.6 12 0.99 103 12 0.78 92 Stack Gas Airflow (acf/min): 3799.7 Stack Gas Airflow (dscf/min): 3577.7 Roof Monitor Exhaust Temperature (°C): 39.0 Roof Monitor Exhaust Temperature (°R): 562.1 Monitor Isokinetic Sampling Check Average Anemometer Velocity (m/min): 61.142 Pre Test Sample duct Velocity ( Vd ) - Ft / Sec 50.928 Average Anemometer Velocity(ft/min): 110.7 Test Period Sample Duct Velocity ( Vs ) - Ft / Sec 51.55 Anemometer Airflow (dscf/min): 901840 Monitor Nozzle Percent Isokinetics: Vs <120% Vd Acceptable - % 101.23 Anemometer Airflow (dscf/min) both rooms (vents) 1803679METHODS 1, 2, 3, 4, AND 29 ALCOA WENATCHEE WORKS Lb. / Hr. are per Room Roof Monitor File Name: Room 20 Monitor Lab #: Chester Front-Half Particulate Matter Mass Loading Client: ALCOA Start Time: 1722 hours Filter Number: Location: Wenatchee, Washington Stop Time: 1731 hours Tare Weight of Filter (grams): Sample Site: Room 20 Sample Length: 2880 minutes Final Weight of Filter (grams): Sample Date: April 10-12, 2013 Net Weight of Particulate Matter (grams): 0.07010 Run #: 2 - Method 29 Operators: CS,JF,JK Beaker Number: Tare Weight of Beaker (grams): Impinger Weights Final Weight of Beaker (grams): Final Initial Net Pitot Tube Cp: 0.8162 Net Weight of Particulate Matter (grams): 0.0380 grams grams grams Nozzle Diameter: 0.1530 inches Volume of Acetone (milliliters): 62 816.1 g 831.8 g -15.7 g Nozzle Area: 0.0001 ft2 Wt./Vol. of Acetone Blank (milligrams/ml): 0.0000 827.5 g 810.8 g 16.7 g Stack Diameter: 15.0 inches Net Weight of PM Due to Acetone (grams): 0.0000 686.4 g 674.3 g 12.1 g Stack Area: 1.23 ft2 2075.2 g 2068.3 g 6.9 g Meter Temperature: 77.2 °F Total Front-Half Particulate Matter (grams): 0.10810 1920.0 g 1810.0 g 110.0 g Barometric Pressure: 29.50 inches Hg Particulate Concentration (gr/dscf): 0.0014 1856.0 g 1816.0 g 40.0 g Static Pressure: -3.1 inches H2O Particulate Concentration (mg/dscm): 3.19 Total H2O Gain: 170.0 g Stack Pressure: 29.27 inches Hg Particulate Emission Rate (lb/hr): 11.063 Total Volume (scf): 8.02 Orifice Pressure: 0.511 inches H2O Percent Moisture: 0.67 Meter Pressure: 29.54 inches Hg Bws: 0.0067 Average Conc. CO2: 0.1 percent Initial Meter Volume: 485.301 Average Conc. O2: 20.9 percent Leak Check Volume 0.070 Molecular Weight: 28.85 g/g-mole-dry Final Meter Volume: 1735.460 Molecular Weight: 28.78 g/g-mole-wet Volume Sampled: 1250.089 Standard Volume (dscf): 1195.925 Roof Monitor Area: 8840.00 sq. feet Standard Volume (dscm): 33.869 Y Factor: 0.98600 Y Factor Cal. Check: 0.991 DH @: 1.60900 Percent Error (%): 0.5
Sample Velocity Temperature Sample Velocity Temperature Point (" of H2O) °F Point (" of H2O) °F 1 0.84 88 1 0.90 89 1 0.87 79 1 0.90 89 2 0.91 84 2 0.93 77 2 0.99 80 2 0.94 75 3 1.00 79 3 0.40 75 3 0.99 89 3 0.40 80 4 1.10 84 4 0.95 76 4 1.10 77 4 0.96 72 5 1.20 80 5 1.00 70 5 1.20 71 5 1.05 73 6 1.20 73 6 1.10 71 6 1.20 76 6 1.10 65 7 1.30 65 7 1.10 76 7 1.30 72 7 1.10 77 8 1.30 82 8 0.90 75 8 1.20 83 8 0.87 77 9 1.20 78 9 1.00 88 9 1.20 80 9 0.99 89 Stack and Process Data Parameters 10 1.10 86 10 0.99 94 Percent Isokinetics (%): 101 10 1.10 84 10 0.99 90 Stack Gas Temperature (°F): 81.3 11 1.10 95 11 1.00 96 Stack Gas Temperature (°R): 541.3 11 1.10 90 11 1.00 93 Average Velocity Head (" of H2O): 1.017 12 1.10 88 12 1.00 93 Stack Gas Velocity (ft/second): 56.4 12 1.10 90 12 1.00 87 Stack Gas Airflow (acf/min): 4153.3 Stack Gas Airflow (dscf/min): 3937.5 Roof Monitor Exhaust Temperature (°C): 33.9 Roof Monitor Exhaust Temperature (°R): 553.0 Monitor Isokinetic Sampling Check Average Anemometer Velocity (m/min): 61.822 Pre Test Sample duct Velocity ( Vd ) - Ft / Sec 50.931 Average Anemometer Velocity(ft/min): 111.9 Test Period Sample Duct Velocity ( Vs ) - Ft / Sec 52.13 Anemometer Airflow (dscf/min): 925384 Monitor Nozzle Percent Isokinetics: Vs <120% Vd Acceptable - % 102.35 Anemometer Airflow (dscf/min) both rooms (vents) 1850768METHODS 1, 2, 3, 4, AND 29 ALCOA WENATCHEE WORKS Lb. / Hr. are per Room Roof Monitor File Name: Room 20 Monitor Lab #: Chester Front-Half Particulate Matter Mass Loading Client: ALCOA Start Time: 0850 hours Filter Number: Location: Wenatchee, Washington Stop Time: 0916 hours Tare Weight of Filter (grams): Sample Site: Room 20 Sample Length: 2880 minutes Final Weight of Filter (grams): Sample Date: April 13-15, 2013 Net Weight of Particulate Matter (grams): 0.00000 Run #: 3 - Method 29 Neg. filter wt entered as zero -0.01400 Operators: CS,JF,JK Beaker Number: Tare Weight of Beaker (grams): Impinger Weights Final Weight of Beaker (grams): Final Initial Net Pitot Tube Cp: 0.8443 Net Weight of Particulate Matter (grams): 0.0333 grams grams grams Nozzle Diameter: 0.1530 inches Volume of Acetone (milliliters): 38 702.7 g 722.2 g -19.5 g Nozzle Area: 0.0001 ft2 Wt./Vol. of Acetone Blank (milligrams/ml): 0.0000 754.6 g 746.4 g 8.2 g Stack Diameter: 15.0 inches Net Weight of PM Due to Acetone (grams): 0.0000 828.4 g 819.5 g 8.9 g Stack Area: 1.23 ft2 2287.8 g 2275.8 g 12.0 g Meter Temperature: 75.1 °F Total Front-Half Particulate Matter (grams): 0.03330 1940.0 g 1836.0 g 104.0 g Barometric Pressure: 29.00 inches Hg Particulate Concentration (gr/dscf): 0.0004 1881.0 g 1846.0 g 35.0 g Static Pressure: -3.4 inches H2O Particulate Concentration (mg/dscm): 1.02 Total H2O Gain: 148.6 g Stack Pressure: 28.75 inches Hg Particulate Emission Rate (lb/hr): 3.509 Total Volume (scf): 7.01 Orifice Pressure: 0.474 inches H2O Percent Moisture: 0.61 Meter Pressure: 29.03 inches Hg Bws: 0.0061 Average Conc. CO2: 0.1 percent Initial Meter Volume: 737.562 Average Conc. O2: 20.9 percent Leak Check Volume 0.050 Molecular Weight: 28.85 g/g-mole-dry Final Meter Volume: 1956.165 Molecular Weight: 28.79 g/g-mole-wet Volume Sampled: 1218.553 Standard Volume (dscf): 1150.555 Roof Monitor Area: 8840.00 sq. feet Standard Volume (dscm): 32.584 Y Factor: 0.98600 Y Factor Cal. Check: 0.986 DH @: 1.60900 Percent Error (%): 0.0
Sample Velocity Temperature Sample Velocity Temperature Point (" of H2O) °F Point (" of H2O) °F 1 0.95 64 1 0.89 75 1 0.91 69 1 0.87 84 2 0.91 70 2 0.87 77 2 0.89 75 2 0.86 85 3 0.90 70 3 0.86 73 3 0.91 69 3 0.84 100 4 0.90 78 4 0.85 89 4 0.89 81 4 0.85 79 5 0.94 85 5 0.87 86 5 0.95 80 5 0.87 91 6 0.96 75 6 0.88 70 6 0.97 69 6 0.86 83 7 1.10 67 7 0.88 70 7 1.10 69 7 0.89 79 8 1.10 72 8 0.89 72 8 1.10 63 8 0.88 77 9 1.10 66 9 0.77 77 9 0.98 64 9 0.85 69 Stack and Process Data Parameters 10 0.91 68 10 0.83 69 Percent Isokinetics (%): 100 10 0.88 67 10 0.83 75 Stack Gas Temperature (°F): 74.3 11 0.89 73 11 0.83 75 Stack Gas Temperature (°R): 534.3 11 0.89 71 11 0.87 72 Average Velocity Head (" of H2O): 0.902 12 0.88 66 12 0.82 68 Stack Gas Velocity (ft/second): 55.1 12 0.88 68 12 0.79 72 Stack Gas Airflow (acf/min): 4056.4 Stack Gas Airflow (dscf/min): 3828.5 Roof Monitor Exhaust Temperature (°C): 30.6 Roof Monitor Exhaust Temperature (°R): 547.0 Monitor Isokinetic Sampling Check Average Anemometer Velocity (m/min): 61.586 Pre Test Sample duct Velocity ( Vd ) - Ft / Sec 53.644 Average Anemometer Velocity(ft/min): 111.5 Test Period Sample Duct Velocity ( Vs ) - Ft / Sec 51.93 Anemometer Airflow (dscf/min): 916655 Monitor Nozzle Percent Isokinetics: Vs <120% Vd Acceptable - % 96.80 Anemometer Airflow (dscf/min) both rooms (vents) 1833311METALS EMISSION RESULTS - EPA METHOD 29

File Name: Room 20 Monitor Sample Site: Room 20 Lab ID: Chester Client: ALCOA Sample Date: Sample Volume: 30.398dscm Location: Wenatchee, Washington Start Time: 1504 Airflow: 901840dscfm Run Number: 1 - Method 29 Stop Time: 1516

DETECTION LIMIT EMISSION CONCENTRATION

Total Total ANALYTE Mercury Hg 0.0006 0.0006 0.001 0.01 0.002 0.008 0.001 U 0.024 DLL Antimony Sb 0.082 0.037 0.119 0.082 U 0.037 U 0.119 BDL Arsenic As 0.082 0.037 0.119 0.082 U 0.037 U 0.119 BDL Beryllium Be 0.0004 0.0004 0.002 0.0004 U 0.002 DLL Cadmium Cd 0.009 0.032 0.042 ADL Chromium Cr 0.161 0.03 0.191 ADL Cobalt Co 0.161 0.030 0.191 ADL Lead Pb 0.018 0.018 0.125 0.02 U 0.143 DLL Manganese Mn 0.36 0.051 0.413 ADL Nickel Ni 0.072 0.03 0.099 ADL Selenium Se 0.22 1.322 1.54 ADL

BDL (below detection level) – all analytical values used to calculate and report an in-stack emissions value are less than the laboratory’s reported detection level(s). DLL (detection level limited) – at least one but not all values used to calculate and report an in-stack emissions value are less than the laboratory’s reported detection level(s). ADL ( above detection level) - all analytical values used to calculate and report an in-stack emissions value are greater than the laboratory’s reported detection level(s). Note: Detection Limits (DL) are only reported above if the results are under the DL (U). See lab report for actual DL's. μg/dscm μg/dscm μg/dscm μg/dscm μg/dscm μg/dscm μg/dscm μg/dscm μg/dscm μg/dscm μg/dscm μg/dscm Fraction 1A/B (FH) Fraction

2A/B (BH) Fraction 3A Fraction 3B Fraction 3C Fraction 3C Fraction 1A/B (FH) Fraction

2A/B (BH) Fraction 3A Fraction 3B April 8-10, 2013 AMTEST AIR QUALITY - AN AFFILIATE OF HORIZON ENGINEERINGFile Name: Room 20 Monitor Lab ID: Chester Client: ALCOA Sample Volume: 30.398 dscm Location: Wenatchee, Washington Airflow: 901840 dscfm Sample Site: Room 20 Run Number: 1 - Method 29 (Type in the Process Rate in ton/hour below) Sample Date: April 8-10, 2013 Process Rate: 1.60 ton/hr Start Time: 1504 Process Rate: 1.45 MT/hr Stop Time: 1516



### Analyte μg μg μg μg μg μg Mercury Hg 0.0438 0.0000 0.0438 0.0014 0.362 0.000 0.362 0.012 Antimony Sb 2.50 U 2.50 2.50 U 0.082 U 1.11 U 1.11 1.11 U 0.037 U Arsenic As 2.50 U 2.50 2.50 U 0.082 U 1.11 U 1.11 1.11 U 0.037 U Beryllium Be 0.056 0.000 0.056 0.002 0.011 U 0.011 0.011 U 0.000 U Cadmium Cd 0.288 0.000 0.288 0.009 0.977 0.000 0.977 0.032 Chromium Cr 4.88 0.00 4.88 0.161 0.917 0.000 0.917 0.030 Cobalt Co 4.88 0.00 4.88 0.161 0.917 0.000 0.917 0.030 Lead Pb 3.79 0.00 3.79 0.125 0.555 U 0.555 0.555 U 0.018 U Manganese Mn 11.0 0.0 11.0 0.362 1.55 0.00 1.55 0.051 Nickel Ni 2.19 0.00 2.19 0.072 0.820 0.000 0.820 0.027 Selenium Se 6.73 0.00 6.73 0.221 40.2 0.0 40.2 1.322 Note: Detection Limits (DL) are only reported above if the results are under the DL (U). See lab report for actual DL's. Results are blank corrected . mg/dscm mg/dscm Detection Limit Corrected

Result Corrected

Result Fraction 1A/B (FH) Fraction 2A/B (BH) Sample Detection

Limit Corrected

Result Corrected

Result Sample CONTAINER 1/3 - FILTER/PROBE RINSE CONTAINER 4 - HNO3/H2O2IMPINGERS 

### Laboratory Input - Page 1File Name: Room 20 Monitor Lab ID: Chester Client: ALCOA Sample Volume: 30.398 dscm Location: Wenatchee, Washington Airflow: 901840 dscfm Sample Site: Room 20 Run Number: 1 - Method 29 Sample Date: April 8-10, 2013 Process Rate: 1.60 ton/hr Start Time: 1504 Process Rate: 1.45 MT/hr Stop Time: 1516



### Analyte μg μg μg μg μg μg μg μg μg Mercury Hg 0.059 0.000 0.059 0.002 0.236 0.000 0.236 0.008 0.0177 U 0.0177 0.0177 U 0.0006 U Note: Detection Limits (DL) are only reported above if the results are under the DL (U). See lab report for actual DL's. Results are blank corrected . mg/dscm mg/dscm



## INSTRUCTIONS (Laboratory input pages 1 and 2): In the BLUE colored cells type in the Blank Corrected result (μg/sample); if the value is <MDL, type in the value of the MDL. In the GREEN colored cells leave as zero, unless the result is <MDL; if (and only if) the value is <MDL type in the MDL value (μg/sample). Do Not type in the MDL value unless the result is <MDL. mg/dscm Fraction 3C Sample Detection

Limit Detection Limit Corrected

Result Corrected

Result Fraction 3A Fraction 3B Corrected Result Sample Detection Limit Corrected

Result Corrected

Result Sample Corrected Result CONTAINER 5C CONTAINER 5A CONTAINER 5B 

### Laboratory Input - Page 2METALS EMISSION RESULTS - EPA METHOD 29

File Name: Room 20 Monitor Sample Site: Room 20 Lab ID: Chester Client: ALCOA Sample Date: Sample Volume: 30.398dscm Location: Wenatchee, Washington Start Time: 1504 Airflow: 1803679dscfm Run Number: 1 - Method 29 Stop Time: 1516

DETECTION LIMIT EMISSION CONCENTRATION

Total Total ANALYTE Mercury Hg 0.001 0.000 0.0009 0.001 U 0.00 0.000 U 0.005 0.001 0.009 DLL Antimony Sb 0.041 0.020 0.061 0.041 U 0.020 U 0.061 BDL Arsenic As 0.039 0.039 1.283 0.039 U 1.322 DLL Beryllium Be 0.0004 0.0004 0.002 0.0004 U 0.002 DLL Cadmium Cd 0.038 0.009 0.047 ADL Chromium Cr 0.118 0.04 0.161 ADL Cobalt Co 0.019 0.010 0.029 ADL Lead Pb 0.444 0.13 0.569 ADL Manganese Mn 0.08 0.067 0.145 ADL Nickel Ni 2.540 0.02 2.557 ADL Selenium Se 0.08 0.08 0.08 U 0.050 0.13 DLL

BDL (below detection level) – all analytical values used to calculate and report an in-stack emissions value are less than the laboratory’s reported detection level(s). DLL (detection level limited) – at least one but not all values used to calculate and report an in-stack emissions value are less than the laboratory’s reported detection level(s). ADL ( above detection level) - all analytical values used to calculate and report an in-stack emissions value are greater than the laboratory’s reported detection level(s). Note: Detection Limits (DL) are only reported above if the results are under the DL (U). See lab report for actual DL's. μg/dscm μg/dscm μg/dscm μg/dscm μg/dscm μg/dscm μg/dscm μg/dscm μg/dscm μg/dscm μg/dscm μg/dscm Fraction 1A/B (FH) Fraction

2A/B (BH) Fraction 3A Fraction 3B Fraction 3C Fraction 3C Fraction 1A/B (FH) Fraction

2A/B (BH) Fraction 3A Fraction 3B April 8-10, 2013 AMTEST AIR QUALITY - AN AFFILIATE OF HORIZON ENGINEERINGFile Name: Room 20 Monitor Lab ID: Chester Client: ALCOA Sample Volume: 30.398 dscm Location: Wenatchee, Washington Airflow: 1803679 dscfm Sample Site: Room 20 Run Number: 1 - Method 29 (Type in the Process Rate in ton/hour below) Sample Date: April 8-10, 2013 Process Rate: 6.97 ton/hr Start Time: 1504 Process Rate: 6.32 MT/hr Stop Time: 1516



### Analyte μg μg μg μg μg μg Mercury Hg 0.022 U 0.022 0.0219 U 0.0007 U 0.076 0.000 0.076 0.003 Antimony Sb 1.250 U 1.250 1.25 U 0.041 U 0.595 U 0.595 0.60 U 0.020 U Arsenic As 39.000 0.000 39.00 1.283 1.190 U 1.190 1.19 U 0.039 U Beryllium Be 0.052 0.000 0.052 0.002 0.012 U 0.012 0.012 U 0.000 U Cadmium Cd 1.150 0.000 1.150 0.038 0.282 0.000 0.282 0.009 Chromium Cr 3.580 0.000 3.58 0.118 1.310 0.000 1.310 0.043 Cobalt Co 0.579 0.000 0.58 0.019 0.310 0.000 0.310 0.010 Lead Pb 13.500 0.000 13.50 0.444 3.800 0.000 3.800 0.125 Manganese Mn 2.370 0.000 2.4 0.078 2.040 0.000 2.04 0.067 Nickel Ni 77.200 0.000 77.20 2.540 0.522 0.000 0.522 0.017 Selenium Se 2.500 U 2.500 2.50 U 0.082 U 1.530 0.000 1.5 0.050 Note: Detection Limits (DL) are only reported above if the results are under the DL (U). See lab report for actual DL's. Results are blank corrected . mg/dscm mg/dscm Detection Limit Corrected

Result Corrected

Result Fraction 1A/B (FH) Fraction 2A/B (BH) Sample Detection

Limit Corrected

Result Corrected

Result Sample CONTAINER 1/3 - FILTER/PROBE RINSE CONTAINER 4 - HNO3/H2O2IMPINGERS 

### Laboratory Input - Page 1File Name: Room 20 Monitor Lab ID: Chester Client: ALCOA Sample Volume: 30.398 dscm Location: Wenatchee, Washington Airflow: 1803679 dscfm Sample Site: Room 20 Run Number: 1 - Method 29 Sample Date: April 8-10, 2013 

### Process Rate: 6.97 ton/hr Start Time: 1504 

### Process Rate: 6.32 MT/hr Stop Time: 1516



### Analyte μg μg μg μg μg μg μg μg μg Mercury Hg 0.007 U 0.007 0.007 U 0.000 U 0.158 0.000 0.158 0.005 0.0204 0.0000 0.0204 0.0007 Note: Detection Limits (DL) are only reported above if the results are under the DL (U). See lab report for actual DL's. Results are blank corrected . mg/dscm mg/dscm mg/dscm



## INSTRUCTIONS (Laboratory input pages 1 and 2): In the BLUE colored cells type in the Blank Corrected result (μg/sample); if the value is <MDL, type in the value of the MDL. In the GREEN colored cells leave as zero, unless the result is <MDL; if (and only if) the value is <MDL type in the MDL value (μg/sample). Do Not type in the MDL value unless the result is <MDL. Fraction 3C Sample Detection

Limit Detection Limit Corrected

Result Corrected

Result Fraction 3A Fraction 3B Corrected Result Sample Detection Limit Corrected

Result Corrected

Result Sample Corrected Result CONTAINER 5C CONTAINER 5A CONTAINER 5B 

### Laboratory Input - Page 2METALS EMISSION RESULTS - EPA METHOD 29

File Name: Room 20 Monitor Sample Site: Room 20 Lab ID: Chester Client: ALCOA Sample Date: Sample Volume: 33.869dscm Location: Wenatchee, Washington Start Time: 1722 Airflow: 1850768dscfm Run Number: 2 - Method 29 Stop Time: 1731

DETECTION LIMIT EMISSION CONCENTRATION

Total Total ANALYTE Mercury Hg 0.001 0.000 0.0006 0.0015 0.001 U 0.002 0.000 U 0.005 0.001 U 0.008 DLL Antimony Sb 0.037 0.017 0.05 0.037 U 0.017 U 0.053 BDL Arsenic As 0.033 0.033 2.200 0.033 U 2.233 DLL Beryllium Be 0.0003 0.0003 0.003 0.0003 U 0.004 DLL Cadmium Cd 0.058 0.010 0.068 ADL Chromium Cr 0.107 0.076 0.182 ADL Cobalt Co 0.028 0.014 0.041 ADL Lead Pb 0.549 0.133 0.683 ADL Manganese Mn 0.087 0.1 0.162 ADL Nickel Ni 4.813 0.049 4.862 ADL Selenium Se 0.07 0.07 0.07 U 0.168 0.24 DLL

BDL (below detection level) – all analytical values used to calculate and report an in-stack emissions value are less than the laboratory’s reported detection level(s). DLL (detection level limited) – at least one but not all values used to calculate and report an in-stack emissions value are less than the laboratory’s reported detection level(s). ADL ( above detection level) - all analytical values used to calculate and report an in-stack emissions value are greater than the laboratory’s reported detection level(s). Note: Detection Limits (DL) are only reported above if the results are under the DL (U). See lab report for actual DL's. μg/dscm μg/dscm μg/dscm μg/dscm μg/dscm μg/dscm μg/dscm μg/dscm μg/dscm μg/dscm μg/dscm μg/dscm Fraction 1A/B (FH) Fraction

2A/B (BH) Fraction 3A Fraction 3B Fraction 3C Fraction 3C Fraction 1A/B (FH) Fraction

2A/B (BH) Fraction 3A Fraction 3B April 10-12, 2013 AMTEST AIR QUALITY - AN AFFILIATE OF HORIZON ENGINEERINGFile Name: Room 20 Monitor Lab ID: Chester Client: ALCOA Sample Volume: 33.869 dscm Location: Wenatchee, Washington Airflow: 1850768 dscfm Sample Site: Room 20 Run Number: 2 - Method 29 (Type in the Process Rate in ton/hour below) Sample Date: April 10-12, 2013 Process Rate: 6.97 ton/hr Start Time: 1722 Process Rate: 6.32 MT/hr Stop Time: 1731



### Analyte μg μg μg μg μg μg Mercury Hg 0.022 U 0.022 0.022 U 0.001 U 0.066 0.000 0.066 0.002 Antimony Sb 1.250 U 1.250 1.250 U 0.037 U 0.560 U 0.560 0.560 U 0.017 U Arsenic As 74.500 0.000 74.500 2.200 1.120 U 1.120 1.120 U 0.033 U Beryllium Be 0.116 0.000 0.116 0.003 0.011 U 0.011 0.011 U 0.000 U Cadmium Cd 1.970 0.000 1.970 0.058 0.342 0.000 0.342 0.010 Chromium Cr 3.620 0.000 3.620 0.107 2.560 0.000 2.560 0.076 Cobalt Co 0.943 0.000 0.943 0.028 0.461 0.000 0.461 0.014 Lead Pb 18.600 0.000 18.600 0.549 4.520 0.000 4.520 0.133 Manganese Mn 2.940 0.000 2.940 0.087 2.530 0.000 2.530 0.075 Nickel Ni 163.000 0.000 163.000 4.813 1.660 0.000 1.660 0.049 Selenium Se 2.500 U 2.500 2.500 U 0.074 U 5.680 0.000 5.680 0.168 Note: Detection Limits (DL) are only reported above if the results are under the DL (U). See lab report for actual DL's. Results are blank corrected . mg/dscm mg/dscm Detection Limit Corrected

Result Corrected

Result Fraction 1A/B (FH) Fraction 2A/B (BH) Sample Detection

Limit Corrected

Result Corrected

Result Sample CONTAINER 1/3 - FILTER/PROBE RINSE CONTAINER 4 - HNO3/H2O2IMPINGERS 

### Laboratory Input - Page 1File Name: Room 20 Monitor Lab ID: Chester Client: ALCOA Sample Volume: 33.869 dscm Location: Wenatchee, Washington Airflow: 1850768 dscfm Sample Site: Room 20 Run Number: 2 - Method 29 Sample Date: April 10-12, 2013 

### Process Rate: 6.97 ton/hr Start Time: 1722 

### Process Rate: 6.32 MT/hr Stop Time: 1731



### Analyte μg μg μg μg μg μg μg μg μg Mercury Hg 0.009 U 0.009 0.009 U 0.000 U 0.153 0.000 0.153 0.005 0.0191 U 0.0191 0.0191 U 0.0006 U Note: Detection Limits (DL) are only reported above if the results are under the DL (U). See lab report for actual DL's. Results are blank corrected . mg/dscm mg/dscm mg/dscm



## INSTRUCTIONS (Laboratory input pages 1 and 2): In the BLUE colored cells type in the Blank Corrected result (μg/sample); if the value is <MDL, type in the value of the MDL. In the GREEN colored cells leave as zero, unless the result is <MDL; if (and only if) the value is <MDL type in the MDL value (μg/sample). Do Not type in the MDL value unless the result is <MDL. Fraction 3C Sample Detection

Limit Detection Limit Corrected

Result Corrected

Result Fraction 3A Fraction 3B Corrected Result Sample Detection Limit Corrected

Result Corrected

Result Sample Corrected Result CONTAINER 5C CONTAINER 5A CONTAINER 5B 

### Laboratory Input - Page 2METALS EMISSION RESULTS - EPA METHOD 29

File Name: Room 20 Monitor Sample Site: Room 20 Lab ID: Chester Client: ALCOA Sample Date: Sample Volume: 32.584dscm Location: Wenatchee, Washington Start Time: 0850 Airflow: 1833311 dscfm Run Number: 3 - Method 29 Stop Time: 0916

DETECTION LIMIT EMISSION CONCENTRATION

Total Total ANALYTE Mercury Hg 0.0003 0.0006 0.0009 0.001 0.001 0.000 U 0.004 0.001 U 0.007 DLL Antimony Sb 0.017 0.017 0.773 0.017 U 0.791 DLL Arsenic As 0.034 0.03 23.20 0.034 U 23.24 DLL Beryllium Be 0.0003 0.0003 0.070 0.0003 U 0.071 DLL Cadmium Cd 0.002 0.002 0.124 0.002 U 0.126 DLL Chromium Cr 0.269 0.026 0.295 ADL Cobalt Co 0.073 0.002 0.075 ADL Lead Pb 0.002 0.002 1.399 0.002 U 1.401 DLL Manganese Mn 1.031 0.036 1.067 ADL Nickel Ni 2.560 0.024 2.584 ADL Selenium Se 0.08 0.03 0.11 0.08 U 0.034 U 0.11 BDL

BDL (below detection level) – all analytical values used to calculate and report an in-stack emissions value are less than the laboratory’s reported detection level(s). DLL (detection level limited) – at least one but not all values used to calculate and report an in-stack emissions value are less than the laboratory’s reported detection level(s). ADL ( above detection level) - all analytical values used to calculate and report an in-stack emissions value are greater than the laboratory’s reported detection level(s). Note: Detection Limits (DL) are only reported above if the results are under the DL (U). See lab report for actual DL's. μg/dscm μg/dscm μg/dscm μg/dscm μg/dscm μg/dscm μg/dscm μg/dscm μg/dscm μg/dscm μg/dscm μg/dscm Fraction 1A/B (FH) Fraction

2A/B (BH) Fraction 3A Fraction 3B Fraction 3C Fraction 3C Fraction 1A/B (FH) Fraction

2A/B (BH) Fraction 3A Fraction 3B April 13-15, 2013 AMTEST AIR QUALITY - AN AFFILIATE OF HORIZON ENGINEERINGFile Name: Room 20 Monitor Lab ID: Chester Client: ALCOA Sample Volume: 32.584 

### dscm Location: Wenatchee, Washington Airflow: 1833311 dscfm Sample Site: Room 20 Run Number: 3 - Method 29 (Type in the Process Rate in ton/hour below) Sample Date: April 13-15, 2013 Process Rate: 

### 6.971 ton/hr Start Time: 0850 Process Rate: 6.32 MT/hr Stop Time: 0916



### Analyte μg μg μg μg μg μg Mercury Hg 0.025 0.000 0.025 0.001 0.047 0.000 0.047 0.001 Antimony Sb 25.200 0.000 25.200 0.773 0.560 U 0.560 J 0.560 U 0.017 U Arsenic As 756.000 0.000 756.000 23.201 1.120 U 1.120 1.120 U 0.034 U Beryllium Be 2.290 0.000 2.290 0.070 0.011 U 0.011 0.011 U 0.000 U Cadmium Cd 4.040 0.000 4.040 0.124 0.056 U 0.056 0.056 U 0.002 U Chromium Cr 8.760 0.000 8.760 0.269 0.844 0.000 0.844 0.026 Cobalt Co 2.370 0.000 2.370 0.073 0.066 0.000 0.066 0.002 Lead Pb 45.600 0.000 45.600 1.399 0.056 U 0.056 0.056 U 0.002 U Manganese Mn 33.600 0.000 33.600 1.031 1.170 0.000 1.170 0.036 Nickel Ni 83.400 0.000 83.400 2.560 0.789 0.000 0.789 0.024 Selenium Se 2.500 U 2.500 2.500 U 0.077 U 1.120 U 1.120 1.120 U 0.034 U Note: Detection Limits (DL) are only reported above if the results are under the DL (U). See lab report for actual DL's. Results are blank corrected . mg/dscm mg/dscm Detection Limit Corrected

Result Corrected

Result Fraction 1A/B (FH) Fraction 2A/B (BH) Sample Detection

Limit Corrected

Result Corrected

Result Sample CONTAINER 1/3 - FILTER/PROBE RINSE CONTAINER 4 - HNO3/H2O2IMPINGERS 

### Laboratory Input - Page 1File Name: Room 20 Monitor Lab ID: Chester Client: ALCOA Sample Volume: 32.584 dscm Location: Wenatchee, Washington Airflow: 1833311 dscfm Sample Site: Room 20 Run Number: 3 - Method 29 Sample Date: April 13-15, 2013 

### Process Rate: 6.97 ton/hr Start Time: 0850 

### Process Rate: 6.32 MT/hr Stop Time: 0916



### Analyte μg μg μg μg μg μg μg μg μg Mercury Hg 0.009 U 0.009 0.009 U 0.000 U 0.136 0.000 0.136 0.004 0.0196 U 0.0196 0.0196 U 0.0006 U Note: Detection Limits (DL) are only reported above if the results are under the DL (U). See lab report for actual DL's. Results are blank corrected . mg/dscm mg/dscm mg/dscm



## INSTRUCTIONS (Laboratory input pages 1 and 2): In the BLUE colored cells type in the Blank Corrected result (μg/sample); if the value is <MDL, type in the value of the MDL. In the GREEN colored cells leave as zero, unless the result is <MDL; if (and only if) the value is <MDL type in the MDL value (μg/sample). Do Not type in the MDL value unless the result is <MDL. Fraction 3C Sample Detection

Limit Detection Limit Corrected

Result Corrected

Result Fraction 3A Fraction 3B Corrected Result Sample Detection Limit Corrected

Result Corrected

Result Sample Corrected Result CONTAINER 5C CONTAINER 5A CONTAINER 5B 

### Laboratory Input - Page 2

### File Name: Room 20 Monitor Client: ALCOA Location: Wenatchee, Washington Sample Date:

Run 1 Run 2 Run 3 Average ANALYTE μg/dscm μg/dscm μg/dscm μg/dscm Mercury Hg 0.009 DLL 0.008 DLL 0.007 DLL 0.0082 DLL Antimony Sb 0.061 BDL 0.053 BDL 0.791 DLL 0.3016 DLL Arsenic As 1.322 DLL 2.233 DLL 23.236 DLL 8.9302 DLL Beryllium Be 0.002 DLL 0.004 DLL 0.071 DLL 0.0255 DLL Cadmium Cd 0.047 ADL 0.068 ADL 0.126 DLL 0.0804 DLL Chromium Cr 0.161 ADL 0.182 ADL 0.295 ADL 0.2127 ADL Cobalt Co 0.029 ADL 0.041 ADL 0.075 ADL 0.0485 ADL Lead Pb 0.569 ADL 0.683 ADL 1.401 DLL 0.8843 DLL Manganese Mn 0.145 ADL 0.162 ADL 1.067 ADL 0.4579 ADL Nickel Ni 2.557 ADL 4.862 ADL 2.584 ADL 3.3341 ADL Selenium Se 0.133 DLL 0.242 DLL 0.111 BDL 0.1617 DLL

BDL (below detection level) – all analytical values used to calculate and report an in-stack emissions value are less than the laboratory’s reported detection level(s). DLL (detection level limited) – at least one but not all values used to calculate and report an in-stack emissions value are less than the laboratory’s reported detection level(s). ADL ( above detection level) - all analytical values used to calculate and report an in-stack emissions value are greater than the laboratory’s reported detection level(s). 

### SUMMARY OF EMISSION RESULTS EPA METHOD 29 - METALS AMTEST AIR QUALITY - AN AFFILIATE OF HORIZON ENGINEERING

April 8 - 15, 2013

Room 20

## METALS EMISSION RESULTS - EPA METHOD 29 AMTEST AIR QUALITY - AN AFFILIATE OF HORIZON ENGINEERING

File Name: Room 20 Monitor Start Time: 1504 Client: ALCOA Stop Time: 1516 Location: Wenatchee, Washington Sample Volume: 30.398dscm Sample Site: Room 20 Sample Date: Run Number: 1 - Method 29 Lab ID: Chester EMISSION CONCENTRATION

Total ANALYTE Mercury Hg 0.000001 U 0.0000025 0.0000002 U 0.00001 0.000001 0.000009 DLL 

## Antimony Sb 0.000041 U 0.0000196U 0.000061 BDL 

## Arsenic As 0.001283 0.0000391 U 0.001322 DLL 

## Beryllium Be 0.000002 0.0000004U 0.000002 DLL 

## Cadmium Cd 0.000038 0.0000093 0.000047 ADL 

## Chromium Cr 0.000118 0.0000431 0.000161 ADL 

## Cobalt Co 0.000019 0.0000102 0.000029 ADL 

## Lead Pb 0.000444 0.0001250 0.000569 ADL 

## Manganese Mn 0.000078 0.0000671 0.000145 ADL 

## Nickel Ni 0.002540 0.0000172 0.002557 ADL 

## Selenium Se 0.000082U 0.0000503 0.000133 DLL BDL (below detection level) – all analytical values used to calculate and report an in-stack emissions value are less than the laboratory’s reported detection level(s). DLL (detection level limited) – at least one but not all values used to calculate and report an in-stack emissions value are less than the laboratory’s reported detection level(s). ADL ( above detection level) - all analytical values used to calculate and report an in-stack emissions value are greater than the laboratory’s reported detection level(s). Note: Detection Limits (DL) are only reported above if the results are under the DL (U). See lab report for actual DL's. mg/dscm mg/dscm mg/dscm mg/dscm mg/dscm mg/dscm 

## Fraction 3C April 8-10, 2013

Fraction 1A/B (FH) Fraction 2A/B (BH) Fraction 3A Fraction 3B

## METALS EMISSION RESULTS - EPA METHOD 29 AMTEST AIR QUALITY - AN AFFILIATE OF HORIZON ENGINEERING

File Name: Room 20 Monitor Start Time: 1722 Client: ALCOA Stop Time: 1731 Location: Wenatchee, Washington Sample Volume: 33.869dscm Sample Site: Room 20 Sample Date: Run Number: 2 - Method 29 Lab ID: Chester EMISSION CONCENTRATION

Total ANALYTE Mercury Hg 0.000001 U 0.0000019 0.0000003 U 0.000005 0.000001 U 0.00001 DLL Antimony Sb 0.000037 U 0.0000165 U 0.00005 BDL Arsenic As 0.002200 0.0000331 U 0.00223 DLL Beryllium Be 0.000003 0.0000003 U 0.00000 DLL Cadmium Cd 0.000058 0.0000101 0.00007 ADL Chromium Cr 0.000107 0.0000756 0.00018 ADL Cobalt Co 0.000028 0.0000136 0.00004 ADL Lead Pb 0.000549 0.0001335 0.00068 ADL Manganese Mn 0.000087 0.0000747 0.00016 ADL Nickel Ni 0.004813 0.0000490 0.00486 ADL Selenium Se 0.000074 U 0.0001677 0.00024 DLL
BDL (below detection level) – all analytical values used to calculate and report an in-stack emissions value are less than the laboratory’s reported detection level(s). DLL (detection level limited) – at least one but not all values used to calculate and report an in-stack emissions value are less than the laboratory’s reported detection level(s). ADL ( above detection level) - all analytical values used to calculate and report an in-stack emissions value are greater than the laboratory’s reported detection level(s). Note: Detection Limits (DL) are only reported above if the results are under the DL (U). See lab report for actual DL's. mg/dscm mg/dscm mg/dscm mg/dscm mg/dscm mg/dscm 

## Fraction 3C April 10-12, 2013

Fraction 1A/B (FH) Fraction 2A/B (BH) Fraction 3A Fraction 3B

## METALS EMISSION RESULTS - EPA METHOD 29 AMTEST AIR QUALITY - AN AFFILIATE OF HORIZON ENGINEERING

File Name: Room 20 Monitor Start Time: 0850 Client: ALCOA Stop Time: 0916 Location: Wenatchee, Washington Sample Volume: 32.584dscm Sample Site: Room 20 Sample Date: Run Number: 3 - Method 29 Lab ID: Chester EMISSION CONCENTRATION

Total ANALYTE Mercury Hg 0.000001 0.0000014 0.0000003 U 0.000004 0.000001 U 0.00001 DLL Antimony Sb 0.000773 0.0000172 U 0.00079 DLL Arsenic As 0.023201 0.0000344 U 0.02324 DLL Beryllium Be 0.000070 0.0000003 U 0.00007 DLL Cadmium Cd 0.000124 0.0000017 U 0.00013 DLL Chromium Cr 0.000269 0.0000259 0.00029 ADL Cobalt Co 0.000073 0.0000020 0.00007 ADL Lead Pb 0.001399 0.0000017 U 0.00140 DLL Manganese Mn 0.001031 0.0000359 0.00107 ADL Nickel Ni 0.002560 0.0000242 0.00258 ADL Selenium Se 0.000077 U 0.0000344 U 0.00011 BDL
BDL (below detection level) – all analytical values used to calculate and report an in-stack emissions value are less than the laboratory’s reported detection level(s). DLL (detection level limited) – at least one but not all values used to calculate and report an in-stack emissions value are less than the laboratory’s reported detection level(s). ADL ( above detection level) - all analytical values used to calculate and report an in-stack emissions value are greater than the laboratory’s reported detection level(s). Note: Detection Limits (DL) are only reported above if the results are under the DL (U). See lab report for actual DL's. mg/dscm mg/dscm mg/dscm mg/dscm mg/dscm mg/dscm 

## Fraction 3C April 13-15, 2013

Fraction 1A/B (FH) Fraction 2A/B (BH) Fraction 3A Fraction 3BFile Name: Room 20 Monitor Client: ALCOA Location: Wenatchee, Washington Sample Date:

Run 1 Run 2 Run 3 Average ANALYTE mg/dscm mg/dscm mg/dscm mg/dscm Mercury Hg 0.000009DLL 0.000008DLL 0.00001 DLL 0.00001 DLL Antimony Sb 0.000061 BDL 0.000053BDL 0.00079 DLL 0.00030DLL Arsenic As 0.001322 DLL 0.002233DLL 0.02324DLL 0.00893DLL Beryllium Be 0.000002 DLL 0.000004DLL 0.00007DLL 0.00003DLL Cadmium Cd 0.000047ADL 0.000068ADL 0.00013DLL 0.00008DLL Chromium Cr 0.000161 ADL 0.000182ADL 0.00029ADL 0.00021 ADL Cobalt Co 0.000029ADL 0.000041 ADL 0.00007ADL 0.00005ADL Lead Pb 0.000569ADL 0.000683ADL 0.00140DLL 0.00088DLL Manganese Mn 0.000145ADL 0.000162ADL 0.00107ADL 0.00046ADL Nickel Ni 0.002557ADL 0.004862ADL 0.00258ADL 0.00333ADL Selenium Se 0.000133DLL 0.000242 DLL 0.00011 BDL 0.00016DLL

BDL (below detection level) – all analytical values used to calculate and report an in-stack emissions value are less than the laboratory’s reported detection level(s). DLL (detection level limited) – at least one but not all values used to calculate and report an in-stack emissions value are less than the laboratory’s reported detection level(s). ADL ( above detection level) - all analytical values used to calculate and report an in-stack emissions value are greater than the laboratory’s reported detection level(s). SUMMARY OF EMISSION RESULTS EPA METHOD 29 - METALS AMTEST AIR QUALITY - AN AFFILIATE OF HORIZON ENGINEERING

April 8 - 15, 2013

Room 20

## METALS EMISSION RESULTS - EPA METHOD 29 AMTEST AIR QUALITY - AN AFFILIATE OF HORIZON ENGINEERING

File Name: Room 20 Monitor Start Time: 1504 Client: ALCOA Stop Time: 1516 Location: Wenatchee, Washington Sample Volume: 30.398dscm Sample Site: Room 20 Sample Date: Airflow: 1803679dscfm Run Number: 1 - Method 29 Lab ID: Chester EMISSION CONCENTRATION

Total ANALYTE Mercury Hg 0.0368U 0.1284 0.012 U 0.266 0.034 0.4766 DLL 

## Antimony Sb 2.1005U 0.9999U 3.1004 BDL 

## Arsenic As 65.5365 1.9997U 67.5362 DLL 

## Beryllium Be 0.0874 0.0202U 0.1075 DLL 

## Cadmium Cd 1.9325 0.4739 2.4064 ADL 

## Chromium Cr 6.0159 2.2014 8.2173 ADL 

## Cobalt Co 0.9730 0.5209 1.4939 ADL 

## Lead Pb 22.6857 6.3856 29.0713 ADL 

## Manganese Mn 3.9826 3.4281 7.4107 ADL 

## Nickel Ni 129.7286 0.8772 130.6058 ADL 

## Selenium Se 4.2011 U 2.5710 6.7721 DLL
BDL (below detection level) – all analytical values used to calculate and report an in-stack emissions value are less than the laboratory’s reported detection level(s). DLL (detection level limited) – at least one but not all values used to calculate and report an in-stack emissions value are less than the laboratory’s reported detection level(s). ADL ( above detection level) - all analytical values used to calculate and report an in-stack emissions value are greater than the laboratory’s reported detection level(s). Note: Detection Limits (DL) are only reported above if the results are under the DL (U). See lab report for actual DL's. mg/min mg/min mg/min mg/min mg/min mg/min 

## Fraction 3C April 8-10, 2013

Fraction 1A/B (FH) Fraction 2A/B (BH) Fraction 3A Fraction 3B

## METALS EMISSION RESULTS - EPA METHOD 29 AMTEST AIR QUALITY - AN AFFILIATE OF HORIZON ENGINEERING

File Name: Room 20 Monitor Start Time: 1722 Client: ALCOA Stop Time: 1731 Location: Wenatchee, Washington Sample Volume: 33.869dscm Sample Site: Room 20 Sample Date: Airflow: 1850768dscfm Run Number: 2 - Method 29 Lab ID: Chester EMISSION CONCENTRATION

Total ANALYTE Mercury Hg 0.0339 U 0.1015 0.0133 U 0.237 0.030 U 0.4150 DLL Antimony Sb 1.9345 U 0.8666 U 2.8011 BDL Arsenic As 115.2934 1.7333 U 117.0266 DLL Beryllium Be 0.1795 0.0170 U 0.1965 DLL Cadmium Cd 3.0487 0.5293 3.5780 ADL Chromium Cr 5.6022 3.9618 9.5639 ADL Cobalt Co 1.4594 0.7134 2.1728 ADL Lead Pb 28.7847 6.9950 35.7796 ADL Manganese Mn 4.5498 3.9153 8.4652 ADL Nickel Ni 252.2526 2.5690 254.8216 ADL Selenium Se 3.8689 U 8.7902 12.6591 DLL
BDL (below detection level) – all analytical values used to calculate and report an in-stack emissions value are less than the laboratory’s reported detection level(s). DLL (detection level limited) – at least one but not all values used to calculate and report an in-stack emissions value are less than the laboratory’s reported detection level(s). ADL ( above detection level) - all analytical values used to calculate and report an in-stack emissions value are greater than the laboratory’s reported detection level(s). Note: Detection Limits (DL) are only reported above if the results are under the DL (U). See lab report for actual DL's. mg/min mg/min mg/min mg/min mg/min mg/min 

## Fraction 3C April 10-12, 2013

Fraction 1A/B (FH) Fraction 2A/B (BH) Fraction 3A Fraction 3B

## METALS EMISSION RESULTS - EPA METHOD 29 AMTEST AIR QUALITY - AN AFFILIATE OF HORIZON ENGINEERING

File Name: Room 20 Monitor Start Time: 0850 Client: ALCOA Stop Time: 0916 Location: Wenatchee, Washington Sample Volume: 32.584dscm Sample Site: Room 20 Sample Date: Airflow: 1833311 dscfm Run Number: 3 - Method 29 Lab ID: Chester EMISSION CONCENTRATION

Total ANALYTE Mercury Hg 0.0398 0.0747 0.0138 U 0.217 0.031 U 0.3763 DLL Antimony Sb 40.1540 0.8923 U 41.0464 DLL Arsenic As 1204.6214 1.7846 U 1206.4060 DLL Beryllium Be 3.6489 0.0175 U 3.6664 DLL Cadmium Cd 6.4374 0.0892 U 6.5266 DLL Chromium Cr 13.9583 1.3448 15.3032 ADL Cobalt Co 3.7764 0.1052 3.8816 ADL Lead Pb 72.6597 0.0892 U 72.7489 DLL Manganese Mn 53.5387 1.8643 55.4030 ADL Nickel Ni 132.8908 1.2572 134.1480 ADL Selenium Se 3.9835 U 1.7846 U 5.7682 BDL
BDL (below detection level) – all analytical values used to calculate and report an in-stack emissions value are less than the laboratory’s reported detection level(s). DLL (detection level limited) – at least one but not all values used to calculate and report an in-stack emissions value are less than the laboratory’s reported detection level(s). ADL ( above detection level) - all analytical values used to calculate and report an in-stack emissions value are greater than the laboratory’s reported detection level(s). Note: Detection Limits (DL) are only reported above if the results are under the DL (U). See lab report for actual DL's. mg/min mg/min mg/min mg/min mg/min mg/min 

## Fraction 3C April 13-15, 2013

Fraction 1A/B (FH) Fraction 2A/B (BH) Fraction 3A Fraction 3BFile Name: Room 20 Monitor Client: ALCOA Location: Wenatchee, Washington Sample Date:

Run 1 Run 2 Run 3 Average ANALYTE mg/min mg/min mg/min mg/min Mercury Hg 0.477DLL 0.415DLL 0.376DLL 0.423DLL Antimony Sb 3.100BDL 2.801 BDL 41.046DLL 15.649DLL Arsenic As 67.536DLL 117.027DLL 1206.406 DLL 463.656DLL Beryllium Be 0.108DLL 0.197DLL 3.666DLL 1.324DLL Cadmium Cd 2.406ADL 3.578ADL 6.527DLL 4.170DLL Chromium Cr 8.217ADL 9.564ADL 15.303ADL 11.028ADL Cobalt Co 1.494ADL 2.173ADL 3.882ADL 2.516ADL Lead Pb 29.071 ADL 35.780ADL 72.749 DLL 45.867DLL Manganese Mn 7.411 ADL 8.465ADL 55.403ADL 23.760ADL Nickel Ni 130.606ADL 254.822ADL 134.148ADL 173.192ADL Selenium Se 6.772 DLL 12.659DLL 5.768BDL 8.400DLL

BDL (below detection level) – all analytical values used to calculate and report an in-stack emissions value are less than the laboratory’s reported detection level(s). DLL (detection level limited) – at least one but not all values used to calculate and report an in-stack emissions value are less than the laboratory’s reported detection level(s). ADL ( above detection level) - all analytical values used to calculate and report an in-stack emissions value are greater than the laboratory’s reported detection level(s). SUMMARY OF EMISSION RESULTS EPA METHOD 29 - METALS AMTEST AIR QUALITY - AN AFFILIATE OF HORIZON ENGINEERING

April 8 - 15, 2013

Room 20

## METALS EMISSION RESULTS - EPA METHOD 29 AMTEST AIR QUALITY - AN AFFILIATE OF HORIZON ENGINEERING

File Name: Room 20 Monitor Start Time: 1504 Client: ALCOA Stop Time: 1516 Location: Wenatchee, Washington Sample Volume: 30.398dscm Sample Site: Room 20 Sample Date: Airflow: 1803679dscfm Run Number: 1 - Method 29 Lab ID: Chester EMISSION CONCENTRATION

Total ANALYTE Mercury Hg 4.87E-06U 1.70E-05 1.54E-06 U 3.51E-05 4.53E-06 6.30E-05 DLL 

## Antimony Sb 2.78E-04U 1.32E-04U 4.10E-04 BDL 

## Arsenic As 8.67E-03 2.65E-04U 8.93E-03 DLL 

## Beryllium Be 1.16E-05 2.67E-06U 1.42E-05 DLL 

## Cadmium Cd 2.56E-04 6.27E-05 3.18E-04 ADL 

## Chromium Cr 7.96E-04 2.91E-04 1.09E-03 ADL 

## Cobalt Co 1.29E-04 6.89E-05 1.98E-04 ADL 

## Lead Pb 3.00E-03 8.45E-04 3.85E-03 ADL 

## Manganese Mn 5.27E-04 4.53E-04 9.80E-04 ADL 

## Nickel Ni 1.72E-02 1.16E-04 1.73E-02 ADL 

## Selenium Se 5.56E-04U 3.40E-04 8.96E-04 DLL
BDL (below detection level) – all analytical values used to calculate and report an in-stack emissions value are less than the laboratory’s reported detection level(s). DLL (detection level limited) – at least one but not all values used to calculate and report an in-stack emissions value are less than the laboratory’s reported detection level(s). ADL ( above detection level) - all analytical values used to calculate and report an in-stack emissions value are greater than the laboratory’s reported detection level(s). Note: Detection Limits (DL) are only reported above if the results are under the DL (U). See lab report for actual DL's. 

## April 8-10, 2013

Fraction 1A/B (FH) Fraction 2A/B (BH) Fraction 3A Fraction 3B lb/hr lb/hr lb/hr lb/hr lb/hr lb/hr 

## Fraction 3C

## METALS EMISSION RESULTS - EPA METHOD 29 AMTEST AIR QUALITY - AN AFFILIATE OF HORIZON ENGINEERING

File Name: Room 20 Monitor Start Time: 1722 Client: ALCOA Stop Time: 1731 Location: Wenatchee, Washington Sample Volume: 33.869dscm Sample Site: Room 20 Sample Date: Airflow: 1850768dscfm Run Number: 2 - Method 29 Lab ID: Chester EMISSION CONCENTRATION

Total ANALYTE Mercury Hg 4.48E-06 U 1.34E-05 1.76E-06 U 3.13E-05 3.91E-06 U 5.49E-05 DLL Antimony Sb 2.56E-04 U 1.15E-04 U 3.71E-04 BDL Arsenic As 1.53E-02 2.29E-04 U 1.55E-02 DLL Beryllium Be 2.37E-05 2.25E-06 U 2.60E-05 DLL Cadmium Cd 4.03E-04 7.00E-05 4.73E-04 ADL Chromium Cr 7.41E-04 5.24E-04 1.27E-03 ADL Cobalt Co 1.93E-04 9.44E-05 2.87E-04 ADL Lead Pb 3.81E-03 9.25E-04 4.73E-03 ADL Manganese Mn 6.02E-04 5.18E-04 1.12E-03 ADL Nickel Ni 3.34E-02 3.40E-04 3.37E-02 ADL Selenium Se 5.12E-04 U 1.16E-03 1.67E-03 DLL
BDL (below detection level) – all analytical values used to calculate and report an in-stack emissions value are less than the laboratory’s reported detection level(s). DLL (detection level limited) – at least one but not all values used to calculate and report an in-stack emissions value are less than the laboratory’s reported detection level(s). ADL ( above detection level) - all analytical values used to calculate and report an in-stack emissions value are greater than the laboratory’s reported detection level(s). Note: Detection Limits (DL) are only reported above if the results are under the DL (U). See lab report for actual DL's. 

## April 10-12, 2013

Fraction 1A/B (FH) Fraction 2A/B (BH) Fraction 3A Fraction 3B lb/hr lb/hr lb/hr lb/hr lb/hr lb/hr 

## Fraction 3C

## METALS EMISSION RESULTS - EPA METHOD 29 AMTEST AIR QUALITY - AN AFFILIATE OF HORIZON ENGINEERING

File Name: Room 20 Monitor Start Time: 0850 Client: ALCOA Stop Time: 0916 Location: Wenatchee, Washington Sample Volume: 32.584dscm Sample Site: Room 20 Sample Date: Airflow: 1833311 dscfm Run Number: 3 - Method 29 Lab ID: Chester EMISSION CONCENTRATION

Total ANALYTE Mercury Hg 5.27E-06 9.89E-06 1.83E-06 U 2.87E-05 4.13E-06 U 4.98E-05 DLL Antimony Sb 5.31E-03 1.18E-04 U 5.43E-03 DLL Arsenic As 1.59E-01 2.36E-04 U 1.60E-01 DLL Beryllium Be 4.83E-04 2.32E-06 U 4.85E-04 DLL Cadmium Cd 8.52E-04 1.18E-05 U 8.63E-04 DLL Chromium Cr 1.85E-03 1.78E-04 2.02E-03 ADL Cobalt Co 5.00E-04 1.39E-05 5.13E-04 ADL Lead Pb 9.61E-03 1.18E-05 U 9.62E-03 DLL Manganese Mn 7.08E-03 2.47E-04 7.33E-03 ADL Nickel Ni 1.76E-02 1.66E-04 1.77E-02 ADL Selenium Se 5.27E-04 U 2.36E-04 U 7.63E-04 BDL
BDL (below detection level) – all analytical values used to calculate and report an in-stack emissions value are less than the laboratory’s reported detection level(s). DLL (detection level limited) – at least one but not all values used to calculate and report an in-stack emissions value are less than the laboratory’s reported detection level(s). ADL ( above detection level) - all analytical values used to calculate and report an in-stack emissions value are greater than the laboratory’s reported detection level(s). Note: Detection Limits (DL) are only reported above if the results are under the DL (U). See lab report for actual DL's. 

## April 13-15, 2013

Fraction 1A/B (FH) Fraction 2A/B (BH) Fraction 3A Fraction 3B lb/hr lb/hr lb/hr lb/hr lb/hr lb/hr 

## Fraction 3CFile Name: Room 20 Monitor Client: ALCOA Location: Wenatchee, Washington Sample Date:

Run 1 Run 2 Run 3 Average ANALYTE lb/hr lb/hr lb/hr lb/hr Mercury Hg 6.30E-05DLL 5.49E-05 DLL 4.98E-05 DLL 5.59E-05DLL Antimony Sb 4.10E-04BDL 3.71E-04BDL 5.43E-03DLL 2.07E-03DLL Arsenic As 8.93E-03DLL 1.55E-02 DLL 1.60E-01 DLL 6.13E-02DLL Beryllium Be 1.42E-05DLL 2.60E-05 DLL 4.85E-04DLL 1.75E-04DLL Cadmium Cd 3.18E-04ADL 4.73E-04ADL 8.63E-04DLL 5.52E-04DLL Chromium Cr 1.09E-03ADL 1.27E-03ADL 2.02E-03ADL 1.46E-03ADL Cobalt Co 1.98E-04ADL 2.87E-04ADL 5.13E-04ADL 3.33E-04ADL Lead Pb 3.85E-03ADL 4.73E-03ADL 9.62E-03DLL 6.07E-03DLL Manganese Mn 9.80E-04ADL 1.12E-03ADL 7.33E-03ADL 3.14E-03ADL Nickel Ni 1.73E-02ADL 3.37E-02ADL 1.77E-02ADL 2.29E-02ADL Selenium Se 8.96E-04DLL 1.67E-03DLL 7.63E-04BDL 1.11E-03DLL

BDL (below detection level) – all analytical values used to calculate and report an in-stack emissions value are less than the laboratory’s reported detection level(s). DLL (detection level limited) – at least one but not all values used to calculate and report an in-stack emissions value are less than the laboratory’s reported detection level(s). ADL ( above detection level) - all analytical values used to calculate and report an in-stack emissions value are greater than the laboratory’s reported detection level(s). SUMMARY OF EMISSION RESULTS EPA METHOD 29 - METALS AMTEST AIR QUALITY - AN AFFILIATE OF HORIZON ENGINEERING

April 8 - 15, 2013

Room 20

## METALS EMISSION RESULTS - EPA METHOD 29 AMTEST AIR QUALITY - AN AFFILIATE OF HORIZON ENGINEERING

File Name: Room 20 Monitor Start Time: 1504 Client: ALCOA Stop Time: 1516 Location: Wenatchee, Washington Sample Volume: 30.398dscm Sample Site: Room 20 Sample Date: 

# Airflow: 1803679

# dscfm Run Number: 1 - Method 29 

# Process Rate: 6.32

# MT/hr Lab ID: EMISSION RATE

ANALYTE Mercury Hg 0.3492U 1.2180 0.1102 U 2.5190 0.3252 4.5216 DLL 

## Antimony Sb 19.9288U 9.4861 U 29.4149 BDL 

## Arsenic As 621.7794 18.9722U 640.7516 DLL 

## Beryllium Be 0.8290 0.1913U 1.0204 DLL 

## Cadmium Cd 18.3345 4.4959 22.8305 ADL 

## Chromium Cr 57.0762 20.8854 77.9616 ADL 

## Cobalt Co 9.2310 4.9423 14.1734 ADL 

## Lead Pb 215.2313 60.5836 275.8149 ADL 

## Manganese Mn 37.7851 32.5238 70.3089 ADL 

## Nickel Ni 1230.8043 8.3223 1239.1265 ADL 

## Selenium Se 39.8577U 24.3929 64.2505 DLL BDL (below detection level) – all analytical values used to calculate and report an in-stack emissions value are less than the laboratory’s reported detection level(s). DLL (detection level limited) – at least one but not all values used to calculate and report an in-stack emissions value are less than the laboratory’s reported detection level(s). ADL ( above detection level) - all analytical values used to calculate and report an in-stack emissions value are greater than the laboratory’s reported detection level(s). Note: Detection Limits (DL) are only reported above if the results are under the DL (U). See lab report for actual DL's. 

## Fraction 3C Total mg/MT mg/MT mg/MT mg/MT mg/MT mg/MT 

## Fraction 3B April 8-10, 2013 Chester

Fraction 1A/B (FH) Fraction 2A/B

(BH) Fraction 3A

## METALS EMISSION RESULTS - EPA METHOD 29 AMTEST AIR QUALITY - AN AFFILIATE OF HORIZON ENGINEERING

File Name: Room 20 Monitor Start Time: 1722 Client: ALCOA Stop Time: 1731 Location: Wenatchee, Washington Sample Volume: 33.869dscm Sample Site: Room 20 Sample Date: 

# Airflow: 1850768

# dscfm Run Number: 2 - Method 29 

# Process Rate: 6.32

# MT/hr Lab ID: EMISSION RATE

ANALYTE Mercury Hg 0.3215U 0.9632 0.1260 U 2.2464 0.2804 U 3.9376 DLL 

## Antimony Sb 18.3532U 8.2222U 26.5754 BDL 

## Arsenic As 1093.8493 16.4444U 1110.2938 DLL 

## Beryllium Be 1.7032 0.1615U 1.8647 DLL 

## Cadmium Cd 28.9246 5.0214 33.9460 ADL 

## Chromium Cr 53.1508 37.5873 90.7381 ADL 

## Cobalt Co 13.8456 6.7687 20.6143 ADL 

## Lead Pb 273.0953 66.3651 339.4603 ADL 

## Manganese Mn 43.1667 37.1468 80.3135 ADL 

## Nickel Ni 2393.2542 24.3730 2417.6272 ADL 

## Selenium Se 36.7064U 83.3968 120.1032 DLL BDL (below detection level) – all analytical values used to calculate and report an in-stack emissions value are less than the laboratory’s reported detection level(s). DLL (detection level limited) – at least one but not all values used to calculate and report an in-stack emissions value are less than the laboratory’s reported detection level(s). ADL ( above detection level) - all analytical values used to calculate and report an in-stack emissions value are greater than the laboratory’s reported detection level(s). Note: Detection Limits (DL) are only reported above if the results are under the DL (U). See lab report for actual DL's. 

## Fraction 3C Total mg/MT mg/MT mg/MT mg/MT mg/MT mg/MT 

## Fraction 3B April 10-12, 2013 Chester

Fraction 1A/B (FH) Fraction 2A/B

(BH) Fraction 3A

## METALS EMISSION RESULTS - EPA METHOD 29 AMTEST AIR QUALITY - AN AFFILIATE OF HORIZON ENGINEERING

File Name: Room 20 Monitor Start Time: 0850 Client: ALCOA Stop Time: 0916 Location: Wenatchee, Washington Sample Volume: 32.584dscm Sample Site: Room 20 Sample Date: 

# Airflow: 1833311

# dscfm Run Number: 3 - Method 29 

# Process Rate: 6.32

# MT/hr Lab ID: EMISSION RATE

ANALYTE Mercury Hg 0.3779 0.7090 0.1309 U 2.0560 0.2963 U 3.5702 DLL 

## Antimony Sb 380.9627 8.4658U 389.4285 DLL 

## Arsenic As 11428.8805 16.9317U 11445.8122 DLL 

## Beryllium Be 34.6192 0.1663U 34.7855 DLL 

## Cadmium Cd 61.0750 0.8466U 61.9216 DLL 

## Chromium Cr 132.4299 12.7592 145.1891 ADL 

## Cobalt Co 35.8286 0.9978 36.8264 ADL 

## Lead Pb 689.3610 0.8466U 690.2076 DLL 

## Manganese Mn 507.9502 17.6876 525.6378 ADL 

## Nickel Ni 1260.8051 11.9278 1272.7328 ADL 

## Selenium Se 37.7939U 16.9317U 54.7256 BDL BDL (below detection level) – all analytical values used to calculate and report an in-stack emissions value are less than the laboratory’s reported detection level(s). DLL (detection level limited) – at least one but not all values used to calculate and report an in-stack emissions value are less than the laboratory’s reported detection level(s). ADL ( above detection level) - all analytical values used to calculate and report an in-stack emissions value are greater than the laboratory’s reported detection level(s). Note: Detection Limits (DL) are only reported above if the results are under the DL (U). See lab report for actual DL's. 

## Fraction 3C Total mg/MT mg/MT mg/MT mg/MT mg/MT mg/MT 

## Fraction 3B April 13-15, 2013 Chester

Fraction 1A/B (FH) Fraction 2A/B

(BH) Fraction 3AFile Name: Room 20 Monitor Client: ALCOA Location: Wenatchee, Washington Sample Date:

Run 1 Run 2 Run 3 ANALYTE Mercury Hg 4.5216DLL 3.9376DLL 3.5702 DLL 4.0098DLL Antimony Sb 29.4149BDL 26.5754BDL 389.4285 DLL 148.4730DLL Arsenic As 640.7516DLL 1110.2938 DLL 11445.8122 DLL 4398.9525DLL Beryllium Be 1.0204DLL 1.8647DLL 34.7855 DLL 12.5569DLL Cadmium Cd 22.8305ADL 33.9460ADL 61.9216 DLL 39.5660DLL Chromium Cr 77.9616ADL 90.7381 ADL 145.1891 ADL 104.6296ADL Cobalt Co 14.1734ADL 20.6143ADL 36.8264ADL 23.8714ADL Lead Pb 275.8149ADL 339.4603ADL 690.2076 DLL 435.1610DLL Manganese Mn 70.3089ADL 80.3135ADL 525.6378ADL 225.4201 ADL Nickel Ni 1239.1265ADL 2417.6272ADL 1272.7328ADL 1643.1622ADL Selenium Se 64.2505 DLL 120.1032 DLL 54.7256BDL 79.6931 DLL BDL (below detection level) – all analytical values used to calculate and report an in-stack emissions value are less than the laboratory’s reported detection level(s). DLL (detection level limited) – at least one but not all values used to calculate and report an in-stack emissions value are less than the laboratory’s reported detection level(s). ADL ( above detection level) - all analytical values used to calculate and report an in-stack emissions value are greater than the laboratory’s reported detection level(s). mg/MT mg/MT mg/MT mg/MT SUMMARY OF EMISSION RESULTS EPA METHOD 29 - METALS AMTEST AIR QUALITY - AN AFFILIATE OF HORIZON ENGINEERING

April 8 - 15, 2013

Room 20 Average

## METALS EMISSION RESULTS - EPA METHOD 29 AMTEST AIR QUALITY - AN AFFILIATE OF HORIZON ENGINEERING

File Name: Room 20 Monitor Start Time: 1504 Client: ALCOA Stop Time: 1516 Location: Wenatchee, Washington Sample Volume: 30.398dscm Sample Site: Room 20 Sample Date: 

# Airflow: 1803679

# dscfm Run Number: 1 - Method 29 

# Process Rate: 6.97

# ton/hr Lab ID: EMISSION RATE

ANALYTE Mercury Hg 0.0000007U 0.0000024 0.0000002 U 0.000005 0.0000007 0.000009 DLL 

## Antimony Sb 0.0000399U 0.0000190U 0.000059 BDL 

## Arsenic As 0.0012436 0.0000379U 0.001282 DLL 

## Beryllium Be 0.0000017 0.0000004U 0.000002 DLL 

## Cadmium Cd 0.0000367 0.0000090 0.000046 ADL 

## Chromium Cr 0.0001142 0.0000418 0.000156 ADL 

## Cobalt Co 0.0000185 0.0000099 0.000028 ADL 

## Lead Pb 0.0004305 0.0001212 0.000552 ADL 

## Manganese Mn 0.0000756 0.0000650 0.000141 ADL 

## Nickel Ni 0.0024616 0.0000166 0.002478 ADL 

## Selenium Se 0.0000797U 0.0000488 0.000129 DLL BDL (below detection level) – all analytical values used to calculate and report an in-stack emissions value are less than the laboratory’s reported detection level(s). DLL (detection level limited) – at least one but not all values used to calculate and report an in-stack emissions value are less than the laboratory’s reported detection level(s). ADL ( above detection level) - all analytical values used to calculate and report an in-stack emissions value are greater than the laboratory’s reported detection level(s). Note: Detection Limits (DL) are only reported above if the results are under the DL (U). See lab report for actual DL's. 

## April 8-10, 2013 Chester

Fraction 1A/B (FH) Fraction 2A/B

(BH) Fraction 3A Fraction 3C Total lb/ton lb/ton lb/ton lb/ton lb/ton lb/ton 

## Fraction 3B

## METALS EMISSION RESULTS - EPA METHOD 29 AMTEST AIR QUALITY - AN AFFILIATE OF HORIZON ENGINEERING

File Name: Room 20 Monitor Start Time: 1722 Client: ALCOA Stop Time: 1731 Location: Wenatchee, Washington Sample Volume: 33.869dscm Sample Site: Room 20 Sample Date: 

# Airflow: 1850768

# dscfm Run Number: 2 - Method 29 

# Process Rate: 6.97

# ton/hr Lab ID: EMISSION RATE

ANALYTE Mercury Hg 0.0000006U 0.0000019 0.0000003 U 0.000004 0.0000006 U 0.000008 DLL 

## Antimony Sb 0.0000367U 0.0000164U 0.000053 BDL 

## Arsenic As 0.0021877 0.0000329U 0.002221 DLL 

## Beryllium Be 0.0000034 0.0000003U 0.000004 DLL 

## Cadmium Cd 0.0000578 0.0000100 0.000068 ADL 

## Chromium Cr 0.0001063 0.0000752 0.000181 ADL 

## Cobalt Co 0.0000277 0.0000135 0.000041 ADL 

## Lead Pb 0.0005462 0.0001327 0.000679 ADL 

## Manganese Mn 0.0000863 0.0000743 0.000161 ADL 

## Nickel Ni 0.0047865 0.0000487 0.004835 ADL 

## Selenium Se 0.0000734U 0.0001668 0.000240 DLL BDL (below detection level) – all analytical values used to calculate and report an in-stack emissions value are less than the laboratory’s reported detection level(s). DLL (detection level limited) – at least one but not all values used to calculate and report an in-stack emissions value are less than the laboratory’s reported detection level(s). ADL ( above detection level) - all analytical values used to calculate and report an in-stack emissions value are greater than the laboratory’s reported detection level(s). Note: Detection Limits (DL) are only reported above if the results are under the DL (U). See lab report for actual DL's. 

## April 10-12, 2013 Chester

Fraction 1A/B (FH) Fraction 2A/B

(BH) Fraction 3A Fraction 3C Total lb/ton lb/ton lb/ton lb/ton lb/ton lb/ton 

## Fraction 3B

## METALS EMISSION RESULTS - EPA METHOD 29 AMTEST AIR QUALITY - AN AFFILIATE OF HORIZON ENGINEERING

File Name: Room 20 Monitor Start Time: 0850 Client: ALCOA Stop Time: 0916 Location: Wenatchee, Washington Sample Volume: 32.584dscm Sample Site: Room 20 Sample Date: 

# Airflow: 1833311

# dscfm Run Number: 3 - Method 29 

# Process Rate: 6.97

# ton/hr Lab ID: EMISSION RATE

ANALYTE Mercury Hg 0.0000008 0.0000014 0.0000003 U 0.000004 0.0000006 U 0.000007 DLL 

## Antimony Sb 0.0007619 0.0000169U 0.000779 DLL 

## Arsenic As 0.0228578 0.0000339U 0.022892 DLL 

## Beryllium Be 0.0000692 0.0000003U 0.000070 DLL 

## Cadmium Cd 0.0001221 0.0000017U 0.000124 DLL 

## Chromium Cr 0.0002649 0.0000255 0.000290 ADL 

## Cobalt Co 0.0000717 0.0000020 0.000074 ADL 

## Lead Pb 0.0013787 0.0000017U 0.001380 DLL 

## Manganese Mn 0.0010159 0.0000354 0.001051 ADL 

## Nickel Ni 0.0025216 0.0000239 0.002545 ADL 

## Selenium Se 0.0000756U 0.0000339U 0.000109 BDL BDL (below detection level) – all analytical values used to calculate and report an in-stack emissions value are less than the laboratory’s reported detection level(s). DLL (detection level limited) – at least one but not all values used to calculate and report an in-stack emissions value are less than the laboratory’s reported detection level(s). ADL ( above detection level) - all analytical values used to calculate and report an in-stack emissions value are greater than the laboratory’s reported detection level(s). Note: Detection Limits (DL) are only reported above if the results are under the DL (U). See lab report for actual DL's. 

## April 13-15, 2013 Chester

Fraction 1A/B (FH) Fraction 2A/B

(BH) Fraction 3A Fraction 3C Total lb/ton lb/ton lb/ton lb/ton lb/ton lb/ton 

## Fraction 3BFile Name: Room 20 Monitor Client: ALCOA Location: Wenatchee, Washington Sample Date:

Run 1 Run 2 Run 3 ANALYTE Mercury Hg 0.000009DLL 0.000008DLL 0.000007DLL 0.000008DLL Antimony Sb 0.000059BDL 0.000053BDL 0.000779 DLL 0.000297DLL Arsenic As 0.001282 DLL 0.002221 DLL 0.022892 DLL 0.008798DLL Beryllium Be 0.000002 DLL 0.000004DLL 0.000070 DLL 0.000025DLL Cadmium Cd 0.000046ADL 0.000068ADL 0.000124DLL 0.000079DLL Chromium Cr 0.000156ADL 0.000181 ADL 0.000290ADL 0.000209ADL Cobalt Co 0.000028ADL 0.000041 ADL 0.000074ADL 0.000048ADL Lead Pb 0.000552ADL 0.000679ADL 0.001380 DLL 0.000870DLL Manganese Mn 0.000141 ADL 0.000161 ADL 0.001051 ADL 0.000451 ADL Nickel Ni 0.002478ADL 0.004835ADL 0.002545ADL 0.003286ADL Selenium Se 0.000129DLL 0.000240DLL 0.000109BDL 0.000159DLL BDL (below detection level) – all analytical values used to calculate and report an in-stack emissions value are less than the laboratory’s reported detection level(s). DLL (detection level limited) – at least one but not all values used to calculate and report an in-stack emissions value are less than the laboratory’s reported detection level(s). ADL ( above detection level) - all analytical values used to calculate and report an in-stack emissions value are greater than the laboratory’s reported detection level(s). lb/ton lb/ton lb/ton lb/ton SUMMARY OF EMISSION RESULTS EPA METHOD 29 - METALS AMTEST AIR QUALITY - AN AFFILIATE OF HORIZON ENGINEERING

April 8 - 15, 2013

Room 20 Average

### File Name: Room 20 Monitor Client: ALCOA Location: Wenatchee, Washington Sample Date:

ANALYTE Mercury Hg 0.0082DLL 0.00001 DLL 0.4226DLL 5.59E-05DLL 4.0098DLL 0.000008DLL Antimony Sb 0.3016DLL 0.00030DLL 15.6493DLL 2.07E-03DLL 148.4730DLL 0.000297DLL Arsenic As 8.9302DLL 0.00893DLL 463.6563DLL 6.13E-02DLL ########DLL 0.008798DLL Beryllium Be 0.0255DLL 0.00003DLL 1.3235DLL 1.75E-04DLL 12.5569DLL 0.000025DLL Cadmium Cd 0.0804DLL 0.00008DLL 4.1703DLL 5.52E-04DLL 39.5660DLL 0.000079DLL Chromium Cr 0.2127ADL 0.00021 ADL 11.0281 ADL 1.46E-03ADL 104.6296ADL 0.000209ADL Cobalt Co 0.0485ADL 0.00005ADL 2.5161 ADL 3.33E-04ADL 23.8714ADL 0.000048ADL Lead Pb 0.8843DLL 0.00088DLL 45.8666DLL 6.07E-03DLL 435.1610DLL 0.000870DLL Manganese Mn 0.4579ADL 0.00046ADL 23.7596ADL 3.14E-03ADL 225.4201 ADL 0.000451 ADL Nickel Ni 3.3341 ADL 0.00333ADL 173.1918ADL 2.29E-02ADL ########ADL 0.003286ADL Selenium Se 0.1617DLL 0.00016DLL 8.3998DLL 1.11E-03DLL 79.6931 DLL 0.000159DLL
BDL (below detection level) – all analytical values used to calculate and report an in-stack emissions value are less than the laboratory’s reported detection level(s). DLL (detection level limited) – at least one but not all values used to calculate and report an in-stack emissions value are less than the laboratory’s reported detection level(s). ADL ( above detection level) - all analytical values used to calculate and report an in-stack emissions value are greater than the laboratory’s reported detection level(s). 

### Average lb/hr lb/ton Room 20 Average μg/dscm Average mg/dscm Average mg/min mg/MT OVERALL SUMMARY OF 3-RUN AVERAGE RESULTS

EPA METHOD 29 - METALS AMTEST AIR QUALITY - AN AFFILIATE OF HORIZON ENGINEERING

April 8 - 15, 2013