METHODS 1, 2, 3, 4, AND 29 ALCOA WENATCHEE WORKS Lb. / Hr. are per Room Roof Monitor File Name: Room 6 Monitor Lab #: Chester Front-Half Particulate Matter Mass Loading Client: ALCOA Start Time: 1426 hours Filter Number: Location: Wenatchee, Washington Stop Time: 1445 hours Tare Weight of Filter (grams): Sample Site: Room 6 Sample Length: 2880 minutes Final Weight of Filter (grams): Sample Date: April 8-10, 2013 Net Weight of Particulate Matter (grams): 0.04440 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: 0.8223 Net Weight of Particulate Matter (grams): 0.0221 grams grams grams Nozzle Diameter: 0.1873 inches Volume of Acetone (milliliters): 43 655.2 g 654.2 g 1.0 g Nozzle Area: 0.0002 ft2 Wt./Vol. of Acetone Blank (milligrams/ml): 0.0000 765.7 g 759.8 g 5.9 g Stack Diameter: 15.0 inches Net Weight of PM Due to Acetone (grams): 0.0000 796.3 g 790.4 g 5.9 g Stack Area: 1.23 ft2 2116.0 g 2116.2 g -0.2 g Meter Temperature: 75.6 °F Total Front-Half Particulate Matter (grams): 0.06650 1882.0 g 1798.0 g 84.0 g Barometric Pressure: 29.30 inches Hg Particulate Concentration (gr/dscf): 0.0009 1822.0 g 1782.0 g 40.0 g Static Pressure: -4.3 inches H2O Particulate Concentration (mg/dscm): 2.04 Total H2O Gain: 136.6 g Stack Pressure: 28.98 inches Hg Particulate Emission Rate (lb/hr): 9.7 Total Volume (scf): 6.44 Orifice Pressure: 0.628 inches H2O Percent Moisture: 0.56 Meter Pressure: 29.35 inches Hg Bws: 0.0056 Average Conc. CO2: 0.1 percent Initial Meter Volume: 772.601 Average Conc. O2: 20.9 percent Leak Check Volume 0.115 Molecular Weight: 28.85 g/g-mole-dry Final Meter Volume: 1956.425 Molecular Weight: 28.79 g/g-mole-wet Volume Sampled: 1183.709 Standard Volume (dscf): 1149.818 Roof Monitor Area: 4897.57 sq. feet Standard Volume (dscm): 32.564 Y Factor: 1.00455 Y Factor Cal. Check: 1.094 DH @: 1.81813 Percent Error (%): 8.2
Sample Velocity Temperature Sample Velocity Temperature Point (" of H2O) °F Point (" of H2O) °F 12 0.58 95 12 0.62 99 12 0.58 95 12 0.63 96 11 0.57 92 11 0.63 97 11 0.58 87 11 0.63 99 10 0.58 88 10 0.63 95 10 0.60 88 10 0.64 96 9 0.58 85 9 0.63 95 9 0.59 84 9 0.64 93 8 0.54 83 8 0.62 92 8 0.56 84 8 0.62 93 7 0.56 85 7 0.55 88 7 0.56 79 7 0.54 88 6 0.45 67 6 0.38 82 6 0.43 65 6 0.35 82 5 0.47 67 5 0.36 82 5 0.45 73 5 0.36 82 4 0.43 67 4 0.37 78 4 0.49 69 4 0.35 71 Stack and Process Data Parameters 3 0.50 71 3 0.35 70 Percent Isokinetics (%): 92 3 0.63 72 3 0.37 68 Stack Gas Temperature (°F): 83.8 2 0.49 76 2 0.39 80 Stack Gas Temperature (°R): 543.8 2 0.50 80 2 0.38 83 Average Velocity Head (" of H2O): 0.503 1 0.47 84 1 0.38 95 Stack Gas Velocity (ft/second): 40.3 1 0.43 89 1 0.37 95 Stack Gas Airflow (acf/min): 2964.5 Stack Gas Airflow (dscf/min): 2772.6 Roof Monitor Exhaust Temperature (°C): 34.0 Roof Monitor Exhaust Temperature (°R): 553.2 Monitor Isokinetic Sampling Check Average Anemometer Velocity (m/min): 85.210 Pre Test Sample duct Velocity ( Vd ) - Ft / Sec 41.624 Average Anemometer Velocity(ft/min): 279.6 Test Period Sample Duct Velocity ( Vs ) - Ft / Sec 42.416 Anemometer Airflow (dscf/min): 1272589 Monitor Nozzle Percent Isokinetics: Vs <120% Vd Acceptable - % 101.90 Anemometer Airflow (dscf/min) both rooms (vents) 2545178METHODS 1, 2, 3, 4, AND 29 ALCOA WENATCHEE WORKS Lb. / Hr. are per Room Roof Monitor File Name: Room 6 Monitor Lab #: Chester Front-Half Particulate Matter Mass Loading Client: ALCOA Start Time: 1754 hours Filter Number: Location: Wenatchee, Washington Stop Time: 1803 hours Tare Weight of Filter (grams): Sample Site: Room 6 Sample Length: 2880 minutes Final Weight of Filter (grams): Sample Date: April 10-12, 2013 Net Weight of Particulate Matter (grams): 0.05960 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: 0.8033 Net Weight of Particulate Matter (grams): 0.0184 grams grams grams Nozzle Diameter: 0.1873 inches Volume of Acetone (milliliters): 65 723.5 g 732.7 g -9.2 g Nozzle Area: 0.0002 ft2 Wt./Vol. of Acetone Blank (milligrams/ml): 0.0000 852.6 g 853.0 g -0.4 g Stack Diameter: 15.0 inches Net Weight of PM Due to Acetone (grams): 0.0000 773.0 g 768.3 g 4.7 g Stack Area: 1.23 ft2 2145.5 g 2153.8 g -8.3 g Meter Temperature: 77.5 °F Total Front-Half Particulate Matter (grams): 0.07800 1866.0 g 1766.0 g 100.0 g Barometric Pressure: 29.50 inches Hg Particulate Concentration (gr/dscf): 0.0012 1904.0 g 1860.0 g 44.0 g Static Pressure: -4.2 inches H2O Particulate Concentration (mg/dscm): 2.66 Total H2O Gain: 130.8 g Stack Pressure: 29.19 inches Hg Particulate Emission Rate (lb/hr): 11.3 Total Volume (scf): 6.17 Orifice Pressure: 0.558 inches H2O Percent Moisture: 0.59 Meter Pressure: 29.54 inches Hg Bws: 0.0059 Average Conc. CO2: 0.1 percent Initial Meter Volume: 960.891 Average Conc. O2: 20.9 percent Leak Check Volume 0.130 Molecular Weight: 28.85 g/g-mole-dry Final Meter Volume: 2021.920 Molecular Weight: 28.79 g/g-mole-wet Volume Sampled: 1060.899 Standard Volume (dscf): 1033.706 Roof Monitor Area: 4897.57 sq. feet Standard Volume (dscm): 29.275 Y Factor: 1.00455 Y Factor Cal. Check: 1.148 DH @: 1.81813 Percent Error (%): 12.5
Sample Velocity Temperature Sample Velocity Temperature Point (" of H2O) °F Point (" of H2O) °F 1 0.52 93 1 0.40 98 1 0.55 90 1 0.40 92 2 0.53 94 2 0.39 92 2 0.53 87 2 0.40 88 3 0.53 86 3 0.40 92 3 0.52 91 3 0.40 88 4 0.51 91 4 0.42 82 4 0.50 87 4 0.42 82 5 0.40 83 5 0.42 82 5 0.40 80 5 0.42 81 6 0.40 88 6 0.42 81 6 0.40 84 6 0.42 79 7 0.45 83 7 0.42 81 7 0.45 88 7 0.42 81 8 0.50 88 8 0.44 82 8 0.49 84 8 0.44 81 9 0.49 84 9 0.44 84 9 0.48 89 9 0.43 86 Stack and Process Data Parameters 10 0.48 92 10 0.43 92 Percent Isokinetics (%): 90 10 0.50 101 10 0.43 93 Stack Gas Temperature (°F): 88.5 11 0.52 104 11 0.42 93 Stack Gas Temperature (°R): 548.5 11 0.53 93 11 0.42 88 Average Velocity Head (" of H2O): 0.452 12 0.51 103 12 0.42 94 Stack Gas Velocity (ft/second): 37.3 12 0.51 102 12 0.43 89 Stack Gas Airflow (acf/min): 2746.0 Stack Gas Airflow (dscf/min): 2563.9 Roof Monitor Exhaust Temperature (°C): 34.0 Roof Monitor Exhaust Temperature (°R): 553.2 Monitor Isokinetic Sampling Check Average Anemometer Velocity (m/min): 75.470 Pre Test Sample duct Velocity ( Vd ) - Ft / Sec 42.590 Average Anemometer Velocity(ft/min): 247.6 Test Period Sample Duct Velocity ( Vs ) - Ft / Sec 37.568 Anemometer Airflow (dscf/min): 1134370 Monitor Nozzle Percent Isokinetics: Vs <120% Vd Acceptable - % 88.21 Anemometer Airflow (dscf/min) both rooms (vents) 2268740METHODS 1, 2, 3, 4, AND 29 ALCOA WENATCHEE WORKS Lb. / Hr. are per Room Roof Monitor File Name: Room 6 Monitor Lab #: Chester Front-Half Particulate Matter Mass Loading Client: ALCOA Start Time: 0932 hours Filter Number: Location: Wenatchee, Washington Stop Time: 1004 hours Tare Weight of Filter (grams): Sample Site: Room 6 Sample Length: 2880 minutes Final Weight of Filter (grams): Sample Date: April 13-15, 2013 Net Weight of Particulate Matter (grams): 0.07010 Run #: 3 - 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: 0.8223 Net Weight of Particulate Matter (grams): 0.0166 grams grams grams Nozzle Diameter: 0.1873 inches Volume of Acetone (milliliters): 28 549.0 g 581.0 g -32.0 g Nozzle Area: 0.0002 ft2 Wt./Vol. of Acetone Blank (milligrams/ml): 0.0000 776.0 g 772.3 g 3.7 g Stack Diameter: 15.0 inches Net Weight of PM Due to Acetone (grams): 0.0000 807.7 g 804.0 g 3.7 g Stack Area: 1.23 ft2 2219.4 g 2219.6 g -0.2 g Meter Temperature: 74.3 °F Total Front-Half Particulate Matter (grams): 0.08670 1776.0 g 1684.0 g 92.0 g Barometric Pressure: 29.00 inches Hg Particulate Concentration (gr/dscf): 0.0008 1853.0 g 1782.0 g 71.0 g Static Pressure: -5.1 inches H2O Particulate Concentration (mg/dscm): 1.93 Total H2O Gain: 138.2 g Stack Pressure: 28.63 inches Hg Particulate Emission Rate (lb/hr): 8.6 Total Volume (scf): 6.52 Orifice Pressure: 0.983 inches H2O Percent Moisture: 0.41 Meter Pressure: 29.07 inches Hg Bws: 0.0041 Average Conc. CO2: 0.1 percent Initial Meter Volume: 22.000 Average Conc. O2: 20.9 percent Leak Check Volume 0.314 Molecular Weight: 28.85 g/g-mole-dry Final Meter Volume: 1670.028 Molecular Weight: 28.81 g/g-mole-wet Volume Sampled: 1647.714 Standard Volume (dscf): 1589.493 Roof Monitor Area: 4897.57 sq. feet Standard Volume (dscm): 45.015 Y Factor: 1.00455 Y Factor Cal. Check: 0.986 DH @: 1.81813 Percent Error (%): -1.8
Sample Velocity Temperature Sample Velocity Temperature Point (" of H2O) °F Point (" of H2O) °F 1 0.70 76 1 0.44 86 1 0.66 82 1 0.72 83 2 0.66 83 2 0.73 84 2 0.65 76 2 0.74 78 3 0.64 76 3 0.72 91 3 0.60 84 3 0.71 95 4 0.68 81 4 0.76 89 4 0.65 80 4 0.78 84 5 0.79 84 5 0.80 89 5 0.79 88 5 0.78 85 6 0.79 82 6 0.80 82 6 0.79 85 6 0.80 77 7 0.76 83 7 0.85 82 7 0.75 79 7 0.86 77 8 0.75 86 8 0.86 80 8 0.76 78 8 0.95 82 9 0.79 77 9 0.94 79 9 0.79 77 9 0.95 81 Stack and Process Data Parameters 10 0.78 76 10 0.98 80 Percent Isokinetics (%): 103 10 0.78 73 10 0.99 75 Stack Gas Temperature (°F): 80.5 11 0.78 80 11 0.99 77 Stack Gas Temperature (°R): 540.5 11 0.79 71 11 1.00 72 Average Velocity Head (" of H2O): 0.784 12 0.77 75 12 1.00 68 Stack Gas Velocity (ft/second): 50.4 12 0.77 84 12 1.00 73 Stack Gas Airflow (acf/min): 3709.6 Stack Gas Airflow (dscf/min): 3452.7 Roof Monitor Exhaust Temperature (°C): 30.4 Roof Monitor Exhaust Temperature (°R): 546.7 Monitor Isokinetic Sampling Check Average Anemometer Velocity (m/min): 79.240 Pre Test Sample duct Velocity ( Vd ) - Ft / Sec 42.820 Average Anemometer Velocity(ft/min): 260.0 Test Period Sample Duct Velocity ( Vs ) - Ft / Sec 39.445 Anemometer Airflow (dscf/min): 1186967 Monitor Nozzle Percent Isokinetics: Vs <120% Vd Acceptable - % 92.12 Anemometer Airflow (dscf/min) both rooms (vents) 2373935METALS EMISSION RESULTS - EPA METHOD 29

File Name: Room 6 Monitor Sample Site: Room 6 Lab ID: Chester Client: ALCOA Sample Date: Sample Volume: 32.564dscm Location: Wenatchee, Washington Start Time: 1426 Airflow: 1272589dscfm Run Number: 1 - Method 29 Stop Time: 1445

DETECTION LIMIT EMISSION CONCENTRATION

Total Total ANALYTE Mercury Hg 0.0005 0.0005 0.001 0.01 0.002 0.007 0.001 U 0.022 DLL Antimony Sb 0.077 0.034 0.111 0.077 U 0.034 U 0.111 BDL Arsenic As 0.077 0.034 0.111 0.077 U 0.034 U 0.111 BDL Beryllium Be 0.0003 0.0003 0.002 0.0003 U 0.002 DLL Cadmium Cd 0.009 0.030 0.039 ADL Chromium Cr 0.150 0.03 0.178 ADL Cobalt Co 0.150 0.028 0.178 ADL Lead Pb 0.017 0.017 0.116 0.02 U 0.133 DLL Manganese Mn 0.34 0.048 0.385 ADL Nickel Ni 0.067 0.03 0.092 ADL Selenium Se 0.21 1.235 1.44 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 6 Monitor Lab ID: Chester Client: ALCOA Sample Volume: 32.564 dscm Location: Wenatchee, Washington Airflow: 1272589 dscfm Sample Site: Room 6 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: 1426 Process Rate: 1.45 MT/hr Stop Time: 1445



### Analyte μg μg μg μg μg μg Mercury Hg 0.0438 0.0000 0.0438 0.0013 0.362 0.000 0.362 0.011 Antimony Sb 2.50 U 2.50 2.50 U 0.077 U 1.11 U 1.11 1.11 U 0.034 U Arsenic As 2.50 U 2.50 2.50 U 0.077 U 1.11 U 1.11 1.11 U 0.034 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 0.030 Chromium Cr 4.88 0.00 4.88 0.150 0.917 0.000 0.917 0.028 Cobalt Co 4.88 0.00 4.88 0.150 0.917 0.000 0.917 0.028 Lead Pb 3.790 0.00 3.79 0.116 0.555 U 0.555 0.555 U 0.017 U Manganese Mn 11.0 0.0 11.0 0.338 1.55 0.00 1.55 0.048 Nickel Ni 2.19 0.00 2.19 0.067 0.820 0.000 0.820 0.025 Selenium Se 6.73 0.00 6.73 0.207 40.2 0.0 40.2 1.235 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 6 Monitor Lab ID: Chester Client: ALCOA Sample Volume: 32.564 dscm Location: Wenatchee, Washington Airflow: 1272589 dscfm Sample Site: Room 6 Run Number: 1 - Method 29 Sample Date: April 8-10, 2013 Process Rate: 1.60 ton/hr Start Time: 1426 Process Rate: 1.45 MT/hr Stop Time: 1445



### Analyte μg μg μg μg μg μg μg μg μg Mercury Hg 0.0594 0.000 0.059 0.002 0.236 0.000 0.236 0.007 0.0177 U 0.0177 0.0177 U 0.0005 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 6 Monitor Sample Site: Room 6 Lab ID: Chester Client: ALCOA Sample Date: Sample Volume: 32.564dscm Location: Wenatchee, Washington Start Time: 1426 Airflow: 2545178dscfm Run Number: 1 - Method 29 Stop Time: 1445

DETECTION LIMIT EMISSION CONCENTRATION

Total Total ANALYTE Mercury Hg 0.001 0.000 0.0009 0.001 U 0.00 0.000 U 0.007 0.002 0.011 DLL Antimony Sb 0.038 0.018 0.057 0.038 U 0.018 U 0.057 BDL Arsenic As 2.426 0.080 2.506 ADL Beryllium Be 0.0004 0.0004 0.003 0.0004 U 0.003 DLL Cadmium Cd 0.073 0.006 0.079 ADL Chromium Cr 0.130 0.03 0.161 ADL Cobalt Co 0.027 0.005 0.032 ADL Lead Pb 0.633 0.06 0.690 ADL Manganese Mn 0.10 0.553 0.655 ADL Nickel Ni 4.176 0.03 4.205 ADL Selenium Se 0.08 0.08 0.08 U 0.075 0.15 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 6 Monitor Lab ID: Chester Client: ALCOA Sample Volume: 32.564 dscm Location: Wenatchee, Washington Airflow: 2545178 dscfm Sample Site: Room 6 Run Number: 1 - Method 29 (Type in the Process Rate in ton/hour below) Sample Date: April 8-10, 2013 Process Rate: 5.65 ton/hr Start Time: 1426 Process Rate: 5.13 MT/hr Stop Time: 1445



### Analyte μg μg μg μg μg μg Mercury Hg 0.022 U 0.022 0.0219 U 0.0007 U 0.050 0.000 0.050 0.002 Antimony Sb 1.250 U 1.250 1.25 U 0.038 U 0.590 U 0.590 0.59 U 0.018 U Arsenic As 79.000 0.000 79.00 2.426 2.610 0.000 2.61 0.080 Beryllium Be 0.091 0.000 0.091 0.003 0.012 U 0.012 0.012 U 0.000 U Cadmium Cd 2.380 0.000 2.380 0.073 0.183 0.000 0.183 0.006 Chromium Cr 4.240 0.000 4.24 0.130 0.988 0.000 0.988 0.030 Cobalt Co 0.872 0.000 0.87 0.027 0.162 0.000 0.162 0.005 Lead Pb 20.600 0.000 20.60 0.633 1.880 0.000 1.880 0.058 Manganese Mn 3.340 0.000 3.3 0.103 18.000 0.000 18.00 0.553 Nickel Ni 136.000 0.000 136.00 4.176 0.936 0.000 0.936 0.029 Selenium Se 2.500 U 2.500 2.50 U 0.077 U 2.440 0.000 2.4 0.075 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 6 Monitor Lab ID: Chester Client: ALCOA Sample Volume: 32.564 dscm Location: Wenatchee, Washington Airflow: 2545178 dscfm Sample Site: Room 6 Run Number: 1 - Method 29 Sample Date: April 8-10, 2013 Process Rate: 5.65 ton/hr Start Time: 1426 Process Rate: 5.13 MT/hr Stop Time: 1445



### Analyte μg μg μg μg μg μg μg μg μg Mercury Hg 0.009 U 0.009 0.009 U 0.000 U 0.224 0.000 0.224 0.007 0.0558 0.0000 0.0558 0.0017 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 6 Monitor Sample Site: Room 6 Lab ID: Chester Client: ALCOA Sample Date: Sample Volume: 29.275dscm Location: Wenatchee, Washington Start Time: 1754 Airflow: 2268740dscfm Run Number: 2 - Method 29 Stop Time: 1803

DETECTION LIMIT EMISSION CONCENTRATION

Total Total ANALYTE Mercury Hg 0.001 0.000 0.001 0.0007 0.0028 0.001 U 0.001 0.000 U 0.001 U 0.001 U 0.004 DLL Antimony Sb 0.043 0.019 0.06 0.043 U 0.019 U 0.062 BDL Arsenic As 2.634 0.183 2.817 ADL Beryllium Be 0.0004 0.0004 0.003 0.0004 U 0.003 DLL Cadmium Cd 0.070 0.006 0.076 ADL Chromium Cr 0.156 0.050 0.206 ADL Cobalt Co 0.026 0.007 0.033 ADL Lead Pb 0.721 0.077 0.798 ADL Manganese Mn 0.123 0.1 0.268 ADL Nickel Ni 4.406 0.033 4.440 ADL Selenium Se 0.09 0.09 0.09 U 0.085 0.17 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 6 Monitor Lab ID: Chester Client: ALCOA Sample Volume: 29.275 dscm Location: Wenatchee, Washington Airflow: 2268740 dscfm Sample Site: Room 6 Run Number: 2 - Method 29 (Type in the Process Rate in ton/hour below) Sample Date: April 10-12, 2013 Process Rate: 5.65 ton/hr Start Time: 1754 Process Rate: 5.13 MT/hr Stop Time: 1803



### Analyte μg μg μg μg μg μg Mercury Hg 0.022 U 0.022 0.022 U 0.001 U 0.032 0.000 0.032 0.001 Antimony Sb 1.250 U 1.250 1.250 U 0.043 U 0.560 U 0.560 0.560 U 0.019 U Arsenic As 77.100 0.000 77.100 2.634 5.360 0.000 5.360 0.183 Beryllium Be 0.088 0.000 0.088 0.003 0.011 U 0.011 0.011 U 0.000 U Cadmium Cd 2.060 0.000 2.060 0.070 0.173 0.000 0.173 0.006 Chromium Cr 4.580 0.000 4.580 0.156 1.460 0.000 1.460 0.050 Cobalt Co 0.770 0.000 0.770 0.026 0.209 0.000 0.209 0.007 Lead Pb 21.100 0.000 21.100 0.721 2.250 0.000 2.250 0.077 Manganese Mn 3.590 0.000 3.590 0.123 4.260 0.000 4.260 0.146 Nickel Ni 129.000 0.000 129.000 4.406 0.973 0.000 0.973 0.033 Selenium Se 2.500 U 2.500 2.500 U 0.085 U 2.490 0.000 2.490 0.085 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 6 Monitor Lab ID: Chester Client: ALCOA Sample Volume: 29.275 dscm Location: Wenatchee, Washington Airflow: 2268740 dscfm Sample Site: Room 6 Run Number: 2 - Method 29 Sample Date: April 10-12, 2013 Process Rate: 5.65 ton/hr Start Time: 1754 Process Rate: 5.13 MT/hr Stop Time: 1803



### Analyte μg μg μg μg μg μg μg μg μg Mercury Hg 0.009 U 0.009 0.009 U 0.000 U 0.032 U 0.032 0.032 U 0.001 U 0.0196 U 0.0196 0.0196 U 0.0007 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 2

### METALS EMISSION RESULTS - EPA METHOD 29

File Name: Room 6 Monitor Sample Site: Room 6 Lab ID: Chester Client: ALCOA Sample Date: Sample Volume: 45.015dscm Location: Wenatchee, Washington Start Time: 0932 Airflow: 2373935dscfm Run Number: 3 - Method 29 Stop Time: 1004

DETECTION LIMIT EMISSION CONCENTRATION

Total Total ANALYTE Mercury Hg 0.000 0.0002 0.0004 0.0011 0.000 U 0.001 0.000 U 0.003 0.000 U 0.006 DLL 

### Antimony Sb 0.028 0.012 0.040 0.028 U 0.012 U 0.040 BDL 

### Arsenic As 2.35 0.052 2.41 ADL 

### Beryllium Be 0.0002 0.0002 0.003 0.0002 U 0.004 DLL 

### Cadmium Cd 0.001 0.001 0.055 0.001 U 0.057 DLL 

### Chromium Cr 0.067 0.020 0.087 ADL 

### Cobalt Co 0.024 0.002 0.026 ADL 

### Lead Pb 0.012 0.012 0.542 0.012 U 0.554 DLL 

### Manganese Mn 0.099 0.026 0.125 ADL 

### Nickel Ni 3.821 0.014 3.835 ADL 

### Selenium Se 0.06 0.02 0.08 0.06 U 0.025 U 0.08 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 ENGINEERING

### File Name: Room 6 Monitor Lab ID: Chester Client: ALCOA Sample Volume: 45.015 dscm Location: Wenatchee, Washington Airflow: 2373935 dscfm Sample Site: Room 6 Run Number: 3 - Method 29 (Type in the Process Rate in ton/hour below) Sample Date: April 13-15, 2013 Process Rate: 5.65 ton/hr Start Time: 0932 Process Rate: 5.13 MT/hr Stop Time: 1004



### Analyte μg μg μg μg μg μg Mercury Hg 0.022 U 0.022 0.022 U 0.000U 0.055 0.000 0.055 0.001 Antimony Sb 1.250U 1.250 1.250 U 0.028U 0.560U 0.560 J 0.560 U 0.012 U Arsenic As 106.000 0.000 106.000 2.355 2.320 0.000 2.320 0.052 Beryllium Be 0.151 0.000 0.151 0.003 0.011 U 0.011 0.011 U 0.000 U Cadmium Cd 2.490 0.000 2.490 0.055 0.056U 0.056 0.056 U 0.001 U Chromium Cr 3.010 0.000 3.010 0.067 0.911 0.000 0.911 0.020 Cobalt Co 1.060 0.000 1.060 0.024 0.090 0.000 0.090 0.002 Lead Pb 24.400 0.000 24.400 0.542 0.560U 0.560 0.560 U 0.012 U Manganese Mn 4.450 0.000 4.450 0.099 1.190 0.000 1.190 0.026 Nickel Ni 172.000 0.000 172.000 3.821 0.634 0.000 0.634 0.014 Selenium Se 2.500U 2.500 2.500 U 0.056U 1.120U 1.120 1.120 U 0.025 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

### /H2

### O2

### IMPINGERS 

### Laboratory Input - Page 1

### File Name: Room 6 Monitor Lab ID: Chester Client: ALCOA Sample Volume: 45.015 dscm Location: Wenatchee, Washington Airflow: 2373935 dscfm Sample Site: Room 6 Run Number: 3 - Method 29 Sample Date: April 13-15, 2013 Process Rate: 5.65 ton/hr Start Time: 0932 Process Rate: 5.13 MT/hr Stop Time: 1004



### Analyte μg μg μg μg μg μg μg μg μg Mercury Hg 0.009U 0.009 0.009 U 0.000U 0.145 0.000 0.145 0.003 0.0192 U 0.0192 0.0192 U 0.0004 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 2

### File Name: Room 6 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 0.0111 DLL 0.0039 DLL 0.0056 DLL 0.0068 DLL Antimony Sb 0.0565 BDL 0.0618 BDL 0.0402 BDL 0.0528 BDL Arsenic As 2.5062 ADL 2.8167 ADL 2.4063 ADL 2.5764 ADL Beryllium Be 0.0032 DLL 0.0034 DLL 0.0036 DLL 0.0034 DLL Cadmium Cd 0.0787 ADL 0.0763 ADL 0.0566 DLL 0.0705 DLL Chromium Cr 0.1605 ADL 0.2063 ADL 0.0871 ADL 0.1513 ADL Cobalt Co 0.0318 ADL 0.0334 ADL 0.0255 ADL 0.0302 ADL Lead Pb 0.6903 ADL 0.7976 ADL 0.5545 DLL 0.6808 DLL Manganese Mn 0.6553 ADL 0.2681 ADL 0.1253 ADL 0.3496 ADL Nickel Ni 4.2052 ADL 4.4397 ADL 3.8350 ADL 4.1600 ADL Selenium Se 0.1517 DLL 0.1705 DLL 0.0804 BDL 0.1342 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 6

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

File Name: Room 6 Monitor Start Time: 1426 Client: ALCOA Stop Time: 1445 Location: Wenatchee, Washington Sample Volume: 32.564dscm Sample Site: Room 6 Sample Date: Run Number: 1 - Method 29 Lab ID: Chester EMISSION CONCENTRATION

Total ANALYTE Mercury Hg 0.000001 U 0.0000015 0.0000003 U 0.00001 0.000002 0.000011 DLL 

## Antimony Sb 0.000038U 0.0000181 U 0.000057 BDL 

## Arsenic As 0.002426 0.0000802 0.002506 ADL 

## Beryllium Be 0.000003 0.0000004U 0.000003 DLL 

## Cadmium Cd 0.000073 0.0000056 0.000079 ADL 

## Chromium Cr 0.000130 0.0000303 0.000161 ADL 

## Cobalt Co 0.000027 0.0000050 0.000032 ADL 

## Lead Pb 0.000633 0.0000577 0.000690 ADL 

## Manganese Mn 0.000103 0.0005528 0.000655 ADL 

## Nickel Ni 0.004176 0.0000287 0.004205 ADL 

## Selenium Se 0.000077U 0.0000749 0.000152 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 6 Monitor Start Time: 1754 Client: ALCOA Stop Time: 1803 Location: Wenatchee, Washington Sample Volume: 29.275dscm Sample Site: Room 6 Sample Date: Run Number: 2 - Method 29 Lab ID: Chester EMISSION CONCENTRATION

Total ANALYTE Mercury Hg 0.000001 U 0.0000011 0.0000003 U 0.000001 U 0.000001 U 0.000004 DLL Antimony Sb 0.000043 U 0.0000191 U 0.000062 BDL Arsenic As 0.002634 0.0001831 0.002817 ADL Beryllium Be 0.000003 0.0000004 U 0.000003 DLL Cadmium Cd 0.000070 0.0000059 0.000076 ADL Chromium Cr 0.000156 0.0000499 0.000206 ADL Cobalt Co 0.000026 0.0000071 0.000033 ADL Lead Pb 0.000721 0.0000769 0.000798 ADL Manganese Mn 0.000123 0.0001455 0.000268 ADL Nickel Ni 0.004406 0.0000332 0.004440 ADL Selenium Se 0.000085 U 0.0000851 0.000170 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 6 Monitor Start Time: 0932 Client: ALCOA Stop Time: 1004 Location: Wenatchee, Washington Sample Volume: 45.015dscm Sample Site: Room 6 Sample Date: Run Number: 3 - Method 29 Lab ID: Chester EMISSION CONCENTRATION

Total ANALYTE Mercury Hg 0.0000005 U 0.0000012 0.0000002 U 0.000003 0.0000004 U 0.000006 DLL Antimony Sb 0.0000278 U 0.0000124 U 0.000040 BDL Arsenic As 0.0023548 0.0000515 0.002406 ADL Beryllium Be 0.0000034 0.0000002 U 0.000004 DLL Cadmium Cd 0.0000553 0.0000012 U 0.000057 DLL Chromium Cr 0.0000669 0.0000202 0.000087 ADL Cobalt Co 0.0000235 0.0000020 0.000026 ADL Lead Pb 0.0005420 0.0000124 U 0.000554 DLL Manganese Mn 0.0000989 0.0000264 0.000125 ADL Nickel Ni 0.0038209 0.0000141 0.003835 ADL Selenium Se 0.0000555 U 0.0000249 U 0.000080 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 6 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 0.000011 DLL 0.000004DLL 0.000006 DLL 0.000007DLL Antimony Sb 0.000057BDL 0.000062 BDL 0.000040BDL 0.000053BDL Arsenic As 0.002506ADL 0.002817ADL 0.002406ADL 0.002576ADL Beryllium Be 0.000003DLL 0.000003DLL 0.000004DLL 0.000003DLL Cadmium Cd 0.000079ADL 0.000076ADL 0.000057DLL 0.000071 DLL Chromium Cr 0.000161 ADL 0.000206ADL 0.000087ADL 0.000151 ADL Cobalt Co 0.000032ADL 0.000033ADL 0.000026ADL 0.000030ADL Lead Pb 0.000690ADL 0.000798ADL 0.000554DLL 0.000681 DLL Manganese Mn 0.000655ADL 0.000268ADL 0.000125ADL 0.000350ADL Nickel Ni 0.004205ADL 0.004440ADL 0.003835ADL 0.004160ADL Selenium Se 0.000152 DLL 0.000170 DLL 0.000080BDL 0.000134DLL

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 6

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

File Name: Room 6 Monitor Start Time: 1426 Client: ALCOA Stop Time: 1445 Location: Wenatchee, Washington Sample Volume: 32.564dscm Sample Site: Room 6 Sample Date: Airflow: 2545178dscfm Run Number: 1 - Method 29 Lab ID: Chester EMISSION CONCENTRATION

Total ANALYTE Mercury Hg 0.0485U 0.1111 0.0192 U 0.4958 0.1235 0.7981 DLL 

## Antimony Sb 2.7669U 1.3060U 4.0729 BDL 

## Arsenic As 174.8703 5.7774 180.6477 ADL 

## Beryllium Be 0.2014 0.0266U 0.2280 DLL 

## Cadmium Cd 5.2682 0.4051 5.6733 ADL 

## Chromium Cr 9.3854 2.1870 11.5724 ADL 

## Cobalt Co 1.9302 0.3586 2.2888 ADL 

## Lead Pb 45.5991 4.1615 49.7606 ADL 

## Manganese Mn 7.3933 39.8439 47.2371 ADL 

## Nickel Ni 301.0426 2.0719 303.1145 ADL 

## Selenium Se 5.5339U 5.4011 10.9349 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 6 Monitor Start Time: 1754 Client: ALCOA Stop Time: 1803 Location: Wenatchee, Washington Sample Volume: 29.275dscm Sample Site: Room 6 Sample Date: Airflow: 2268740dscfm Run Number: 2 - Method 29 Lab ID: Chester EMISSION CONCENTRATION

Total ANALYTE Mercury Hg 0.0481 U 0.0709 0.0190 U 0.0691 U 0.0430 U 0.2501 DLL Antimony Sb 2.7435 U 1.2291 U 3.9725 BDL Arsenic As 169.2163 11.7639 180.9802 ADL Beryllium Be 0.1931 0.0241 U 0.2173 DLL Cadmium Cd 4.5212 0.3797 4.9009 ADL Chromium Cr 10.0520 3.2044 13.2564 ADL Cobalt Co 1.6900 0.4587 2.1487 ADL Lead Pb 46.3095 4.9382 51.2477 ADL Manganese Mn 7.8792 9.3497 17.2289 ADL Nickel Ni 283.1245 2.1355 285.2600 ADL Selenium Se 5.4869 U 5.4650 10.9519 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 6 Monitor Start Time: 0932 Client: ALCOA Stop Time: 1004 Location: Wenatchee, Washington Sample Volume: 45.015dscm Sample Site: Room 6 Sample Date: Airflow: 2373935dscfm Run Number: 3 - Method 29 Lab ID: Chester EMISSION CONCENTRATION

Total ANALYTE Mercury Hg 0.0327 U 0.0827 0.0135 U 0.2166 0.0287 U 0.3741 DLL Antimony Sb 1.8669 U 0.8364 U 2.7033 BDL Arsenic As 158.3128 3.4650 161.7778 ADL Beryllium Be 0.2255 0.0164 U 0.2419 DLL Cadmium Cd 3.7189 0.0836 U 3.8025 DLL Chromium Cr 4.4955 1.3606 5.8561 ADL Cobalt Co 1.5831 0.1344 1.7175 ADL Lead Pb 36.4418 0.8364 U 37.2782 DLL Manganese Mn 6.6462 1.7773 8.4234 ADL Nickel Ni 256.8850 0.9469 257.8319 ADL Selenium Se 3.7338 U 1.6727 U 5.4065 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 6 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 0.7981 DLL 0.2501 DLL 0.3741 DLL 0.4741 DLL Antimony Sb 4.0729BDL 3.9725BDL 2.7033BDL 3.5829BDL Arsenic As 180.6477ADL 180.9802ADL 161.7778ADL 174.4686ADL Beryllium Be 0.2280DLL 0.2173DLL 0.2419 DLL 0.2291 DLL Cadmium Cd 5.6733ADL 4.9009ADL 3.8025 DLL 4.7922 DLL Chromium Cr 11.5724ADL 13.2564ADL 5.8561 ADL 10.2283ADL Cobalt Co 2.2888ADL 2.1487ADL 1.7175ADL 2.0517ADL Lead Pb 49.7606ADL 51.2477ADL 37.2782 DLL 46.0955DLL Manganese Mn 47.2371 ADL 17.2289ADL 8.4234ADL 24.2965ADL Nickel Ni 303.1145ADL 285.2600ADL 257.8319ADL 282.0688ADL Selenium Se 10.9349 DLL 10.9519 DLL 5.4065 BDL 9.0978DLL

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 6

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

File Name: Room 6 Monitor Start Time: 1426 Client: ALCOA Stop Time: 1445 Location: Wenatchee, Washington Sample Volume: 32.564dscm Sample Site: Room 6 Sample Date: Airflow: 2545178dscfm Run Number: 1 - Method 29 Lab ID: Chester EMISSION CONCENTRATION

Total ANALYTE Mercury Hg 6.41E-06U 1.47E-05 2.54E-06 U 6.56E-05 1.63E-05 1.06E-04 DLL 

## Antimony Sb 3.66E-04U 1.73E-04U 5.39E-04 BDL 

## Arsenic As 2.31E-02 7.64E-04 2.39E-02 ADL 

## Beryllium Be 2.66E-05 3.51E-06U 3.02E-05 DLL 

## Cadmium Cd 6.97E-04 5.36E-05 7.50E-04 ADL 

## Chromium Cr 1.24E-03 2.89E-04 # 1.53E-03 ADL 

## Cobalt Co 2.55E-04 4.74E-05 3.03E-04 ADL 

## Lead Pb 6.03E-03 5.50E-04 6.58E-03 ADL 

## Manganese Mn 9.78E-04 5.27E-03 6.25E-03 ADL 

## Nickel Ni 3.98E-02 2.74E-04 4.01E-02 ADL 

## Selenium Se 7.32E-04U 7.14E-04 1.45E-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. lb/hr lb/hr lb/hr lb/hr lb/hr lb/hr 

## 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 6 Monitor Start Time: 1754 Client: ALCOA Stop Time: 1803 Location: Wenatchee, Washington Sample Volume: 29.275dscm Sample Site: Room 6 Sample Date: Airflow: 2268740dscfm Run Number: 2 - Method 29 Lab ID: Chester EMISSION CONCENTRATION

Total ANALYTE Mercury Hg 6.36E-06 U 9.38E-06 2.51E-06 U 9.14E-06 U 5.69E-06 U 3.31E-05 DLL Antimony Sb 3.63E-04 U 1.63E-04 U 5.25E-04 BDL Arsenic As 2.24E-02 1.56E-03 2.39E-02 ADL Beryllium Be 2.55E-05 3.19E-06 U 2.87E-05 DLL Cadmium Cd 5.98E-04 5.02E-05 6.48E-04 ADL Chromium Cr 1.33E-03 4.24E-04 # 1.75E-03 ADL Cobalt Co 2.24E-04 6.07E-05 2.84E-04 ADL Lead Pb 6.13E-03 6.53E-04 6.78E-03 ADL Manganese Mn 1.04E-03 1.24E-03 2.28E-03 ADL Nickel Ni 3.75E-02 2.82E-04 3.77E-02 ADL Selenium Se 7.26E-04 U 7.23E-04 1.45E-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. lb/hr lb/hr lb/hr lb/hr lb/hr lb/hr 

## 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 6 Monitor Start Time: 0932 Client: ALCOA Stop Time: 1004 Location: Wenatchee, Washington Sample Volume: 45.015dscm Sample Site: Room 6 Sample Date: Airflow: 2373935dscfm Run Number: 3 - Method 29 Lab ID: Chester EMISSION CONCENTRATION

Total ANALYTE Mercury Hg 4.33E-06 U 1.09E-05 1.78E-06 U 2.86E-05 3.79E-06 U 4.95E-05 DLL Antimony Sb 2.47E-04 U 1.11E-04 U 3.58E-04 BDL Arsenic As 2.09E-02 4.58E-04 2.14E-02 ADL Beryllium Be 2.98E-05 2.17E-06 U 3.20E-05 DLL Cadmium Cd 4.92E-04 1.11E-05 U 5.03E-04 DLL Chromium Cr 5.95E-04 1.80E-04 # 7.75E-04 ADL Cobalt Co 2.09E-04 1.78E-05 2.27E-04 ADL Lead Pb 4.82E-03 1.11E-04 U 4.93E-03 DLL Manganese Mn 8.79E-04 2.35E-04 1.11E-03 ADL Nickel Ni 3.40E-02 1.25E-04 3.41E-02 ADL Selenium Se 4.94E-04 U 2.21E-04 U 7.15E-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. lb/hr lb/hr lb/hr lb/hr lb/hr lb/hr 

## Fraction 3C April 13-15, 2013

Fraction 1A/B (FH) Fraction 2A/B (BH) Fraction 3A Fraction 3BFile Name: Room 6 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 1.06E-04DLL 3.31E-05 DLL 4.95E-05 DLL 6.27E-05DLL Antimony Sb 5.39E-04BDL 5.25E-04BDL 3.58E-04BDL 4.74E-04BDL Arsenic As 2.39E-02ADL 2.39E-02ADL 2.14E-02ADL 2.31E-02ADL Beryllium Be 3.02E-05 DLL 2.87E-05 DLL 3.20E-05 DLL 3.03E-05DLL Cadmium Cd 7.50E-04ADL 6.48E-04ADL 5.03E-04DLL 6.34E-04DLL Chromium Cr 1.53E-03ADL 1.75E-03ADL 7.75E-04ADL 1.35E-03ADL Cobalt Co 3.03E-04ADL 2.84E-04ADL 2.27E-04ADL 2.71E-04ADL Lead Pb 6.58E-03ADL 6.78E-03ADL 4.93E-03 DLL 6.10E-03DLL Manganese Mn 6.25E-03ADL 2.28E-03ADL 1.11E-03ADL 3.21E-03ADL Nickel Ni 4.01E-02ADL 3.77E-02ADL 3.41E-02ADL 3.73E-02ADL Selenium Se 1.45E-03DLL 1.45E-03DLL 7.15E-04BDL 1.20E-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 6

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

File Name: Room 6 Monitor Start Time: 1426 Client: ALCOA Stop Time: 1445 Location: Wenatchee, Washington Sample Volume: 32.564dscm Sample Site: Room 6 Sample Date: 

# Airflow: 2545178

# dscfm Run Number: 1 - Method 29 

# Process Rate: 5.13

# MT/hr Lab ID: EMISSION RATE

ANALYTE Mercury Hg 0.5673U 1.3003 0.2243 U 5.8021 1.4453 9.3393 DLL 

## Antimony Sb 32.3776U 15.2822U 47.6599 BDL 

## Arsenic As 2046.2664 67.6045 2113.8709 ADL 

## Beryllium Be 2.3571 0.3108U 2.6679 DLL 

## Cadmium Cd 61.6470 4.7401 66.3871 ADL 

## Chromium Cr 109.8249 25.5913 135.4162 ADL 

## Cobalt Co 22.5866 4.1961 26.7828 ADL 

## Lead Pb 533.5834 48.6960 582.2793 ADL 

## Manganese Mn 86.5130 466.2379 552.7509 ADL 

## Nickel Ni 3522.6864 24.2444 3546.9308 ADL 

## Selenium Se 64.7553U 63.2011 127.9564 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 6 Monitor Start Time: 1754 Client: ALCOA Stop Time: 1803 Location: Wenatchee, Washington Sample Volume: 29.275dscm Sample Site: Room 6 Sample Date: 

# Airflow: 2268740

# dscfm Run Number: 2 - Method 29 

# Process Rate: 5.13

# MT/hr Lab ID: EMISSION RATE

ANALYTE Mercury Hg 0.5624U 0.8295 0.2224 U 0.8090 U 0.5034 U 2.9268 DLL 

## Antimony Sb 32.1029U 14.3821 U 46.4850 BDL 

## Arsenic As 1980.1048 137.6571 2117.7619 ADL 

## Beryllium Be 2.2600 0.2825U 2.5425 DLL 

## Cadmium Cd 52.9055 4.4430 57.3486 ADL 

## Chromium Cr 117.6249 37.4961 155.1211 ADL 

## Cobalt Co 19.7754 5.3676 25.1430 ADL 

## Lead Pb 541.8964 57.7852 599.6815 ADL 

## Manganese Mn 92.1994 109.4066 201.6060 ADL 

## Nickel Ni 3313.0158 24.9889 3338.0047 ADL 

## Selenium Se 64.2057U 63.9489 128.1546 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 6 Monitor Start Time: 0932 Client: ALCOA Stop Time: 1004 Location: Wenatchee, Washington Sample Volume: 45.015dscm Sample Site: Room 6 Sample Date: 

# Airflow: 2373935

# dscfm Run Number: 3 - Method 29 

# Process Rate: 5.13

# MT/hr Lab ID: EMISSION RATE

ANALYTE Mercury Hg 0.3827U 0.9682 0.1575 U 2.5341 0.3356 U 4.3781 DLL 

## Antimony Sb 21.8457U 9.7869U 31.6326 BDL 

## Arsenic As 1852.5170 40.5457 1893.0626 ADL 

## Beryllium Be 2.6390 0.1922U 2.8312 DLL 

## Cadmium Cd 43.5167 0.9787U 44.4954 DLL 

## Chromium Cr 52.6045 15.9212 68.5257 ADL 

## Cobalt Co 18.5252 1.5729 20.0981 ADL 

## Lead Pb 426.4284 9.7869U 436.2153 DLL 

## Manganese Mn 77.7708 20.7971 98.5679 ADL 

## Nickel Ni 3005.9709 11.0801 3017.0511 ADL 

## Selenium Se 43.6914U 19.5738U 63.2652 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 6 Monitor Client: ALCOA Location: Wenatchee, Washington Sample Date:

Run 1 Run 2 Run 3 ANALYTE Mercury Hg 9.3393DLL 2.9268DLL 4.3781 DLL 5.5480DLL Antimony Sb 47.6599BDL 46.4850BDL 31.6326BDL 41.9258BDL Arsenic As 2113.8709ADL 2117.7619ADL 1893.0626ADL 2041.5651 ADL Beryllium Be 2.6679 DLL 2.5425 DLL 2.8312 DLL 2.6806DLL Cadmium Cd 66.3871 ADL 57.3486ADL 44.4954 DLL 56.0770DLL Chromium Cr 135.4162ADL 155.1211 ADL 68.5257ADL 119.6876ADL Cobalt Co 26.7828ADL 25.1430ADL 20.0981 ADL 24.0079ADL Lead Pb 582.2793ADL 599.6815ADL 436.2153 DLL 539.3921 DLL Manganese Mn 552.7509ADL 201.6060ADL 98.5679ADL 284.3083ADL Nickel Ni 3546.9308ADL 3338.0047ADL 3017.0511 ADL 3300.6622ADL Selenium Se 127.9564DLL 128.1546DLL 63.2652 BDL 106.4587DLL 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 6 Average

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

File Name: Room 6 Monitor Start Time: 1426 Client: ALCOA Stop Time: 1445 Location: Wenatchee, Washington Sample Volume: 32.564dscm Sample Site: Room 6 Sample Date: 

# Airflow: 2545178

# dscfm Run Number: 1 - Method 29 

# Process Rate: 5.65

# ton/hr Lab ID: EMISSION RATE

ANALYTE Mercury Hg 0.000001 U 0.0000026 0.0000004 U 0.000012 0.000003 0.000019 DLL 

## Antimony Sb 0.000065U 0.0000306U 0.000095 BDL 

## Arsenic As 0.004093 0.0001352 0.004228 ADL 

## Beryllium Be 0.000005 0.0000006U 0.000005 DLL 

## Cadmium Cd 0.000123 0.0000095 0.000133 ADL 

## Chromium Cr 0.000220 0.0000512 0.000271 ADL 

## Cobalt Co 0.000045 0.0000084 0.000054 ADL 

## Lead Pb 0.001067 0.0000974 0.001165 ADL 

## Manganese Mn 0.000173 0.0009325 0.001106 ADL 

## Nickel Ni 0.007045 0.0000485 0.007094 ADL 

## Selenium Se 0.000130U 0.0001264 0.000256 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 lb/ton lb/ton lb/ton lb/ton lb/ton lb/ton 

## 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 6 Monitor Start Time: 1754 Client: ALCOA Stop Time: 1803 Location: Wenatchee, Washington Sample Volume: 29.275dscm Sample Site: Room 6 Sample Date: 

# Airflow: 2268740

# dscfm Run Number: 2 - Method 29 

# Process Rate: 5.65

# ton/hr Lab ID: EMISSION RATE

ANALYTE Mercury Hg 0.000001 U 0.0000017 0.0000004 U 0.000002 U 0.000001 U 0.000006 DLL 

## Antimony Sb 0.000064U 0.0000288U 0.000093 BDL 

## Arsenic As 0.003960 0.0002753 0.004236 ADL 

## Beryllium Be 0.000005 0.0000006U 0.000005 DLL 

## Cadmium Cd 0.000106 0.0000089 0.000115 ADL 

## Chromium Cr 0.000235 0.0000750 0.000310 ADL 

## Cobalt Co 0.000040 0.0000107 0.000050 ADL 

## Lead Pb 0.001084 0.0001156 0.001199 ADL 

## Manganese Mn 0.000184 0.0002188 0.000403 ADL 

## Nickel Ni 0.006626 0.0000500 0.006676 ADL 

## Selenium Se 0.000128U 0.0001279 0.000256 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 lb/ton lb/ton lb/ton lb/ton lb/ton lb/ton 

## 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 6 Monitor Start Time: 0932 Client: ALCOA Stop Time: 1004 Location: Wenatchee, Washington Sample Volume: 45.015dscm Sample Site: Room 6 Sample Date: 

# Airflow: 2373935

# dscfm Run Number: 3 - Method 29 

# Process Rate: 5.65

# ton/hr Lab ID: EMISSION RATE

ANALYTE Mercury Hg 0.0000008U 0.0000019 0.0000003 U 0.000005 0.0000007 U 0.000009 DLL 

## Antimony Sb 0.0000437U 0.0000196U 0.000063 BDL 

## Arsenic As 0.0037050 0.0000811 0.003786 ADL 

## Beryllium Be 0.0000053 0.0000004U 0.000006 DLL 

## Cadmium Cd 0.0000870 0.0000020U 0.000089 DLL 

## Chromium Cr 0.0001052 0.0000318 0.000137 ADL 

## Cobalt Co 0.0000371 0.0000031 0.000040 ADL 

## Lead Pb 0.0008529 0.0000196U 0.000872 DLL 

## Manganese Mn 0.0001555 0.0000416 0.000197 ADL 

## Nickel Ni 0.0060119 0.0000222 0.006034 ADL 

## Selenium Se 0.0000874U 0.0000391 U 0.000127 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 lb/ton lb/ton lb/ton lb/ton lb/ton lb/ton 

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

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

(BH) Fraction 3AFile Name: Room 6 Monitor Client: ALCOA Location: Wenatchee, Washington Sample Date:

Run 1 Run 2 Run 3 ANALYTE Mercury Hg 0.000019 DLL 0.000006DLL 0.000009 DLL 0.00001 DLL Antimony Sb 0.000095BDL 0.000093BDL 0.000063BDL 0.00008BDL Arsenic As 0.004228ADL 0.004236ADL 0.003786ADL 0.00408ADL Beryllium Be 0.000005 DLL 0.000005 DLL 0.000006 DLL 0.00001 DLL Cadmium Cd 0.000133ADL 0.000115ADL 0.000089 DLL 0.00011 DLL Chromium Cr 0.000271 ADL 0.000310ADL 0.000137ADL 0.00024ADL Cobalt Co 0.000054ADL 0.000050ADL 0.000040ADL 0.00005ADL Lead Pb 0.001165ADL 0.001199ADL 0.000872 DLL 0.00108DLL Manganese Mn 0.001106ADL 0.000403ADL 0.000197ADL 0.00057ADL Nickel Ni 0.007094ADL 0.006676ADL 0.006034ADL 0.00660ADL Selenium Se 0.000256 DLL 0.000256DLL 0.000127BDL 0.00021 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). 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 6 Average

### File Name: Room 6 Monitor Client: ALCOA Location: Wenatchee, Washington Sample Date:

ANALYTE Mercury Hg 0.0068DLL 0.00001 DLL 0.4741 DLL 0.00006DLL 5.5480DLL 0.000011 DLL Antimony Sb 0.0528BDL 0.00005BDL 3.5829BDL 0.00047BDL 41.9258BDL 0.000084BDL Arsenic As 2.5764ADL 0.00258ADL 174.4686ADL 0.02308ADL ########ADL 0.004083ADL Beryllium Be 0.0034DLL 0.00000DLL 0.2291 DLL 0.00003DLL 2.6806DLL 0.000005DLL Cadmium Cd 0.0705DLL 0.00007DLL 4.7922DLL 0.00063DLL 56.0770DLL 0.000112DLL Chromium Cr 0.1513ADL 0.00015ADL 10.2283ADL 0.00135ADL 119.6876ADL 0.000239ADL Cobalt Co 0.0302ADL 0.00003ADL 2.0517ADL 0.00027ADL 24.0079ADL 0.000048ADL Lead Pb 0.6808DLL 0.00068DLL 46.0955DLL 0.00610DLL 539.3921 DLL 0.001079DLL Manganese Mn 0.3496ADL 0.00035ADL 24.2965ADL 0.00321 ADL 284.3083ADL 0.000569ADL Nickel Ni 4.1600ADL 0.00416ADL 282.0688ADL 0.03731 ADL ########ADL 0.006601 ADL Selenium Se 0.1342DLL 0.00013DLL 9.0978DLL 0.00120DLL 106.4587DLL 0.000213DLL
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 April 8 - 15, 2013

lb/ton 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

Room 6