### Name:

Title: Company: Sign Date: Name: Title: Company: Sign Date: Permitted Facility Representative / Date Testing Company Representative / Date Final Test Report for

/ / Based on information and belief formed after reasonable inquiry, I certify that the statements and information in this test report are true, accurate, and complete. I have reviewed all testing details and results in this test report and hereby certify that the test report is authentic and accurate.



### Friday, August 12, 2011 Page 1 of 17

### Facility Information:

A.B. Brown Generating Station
8511 Wellborn Road

Mt. Vernon IN 47620 Contact:Allen Rose Phone: 812-491-4562 Fax: Email: arose@vectren.com Testing Company: Platt Environmental Services, Inc. 1520 Kensington Road
Suite 204
Oak Brook IL 60523 Contact:Stuart Burton Phone:630-993-2100 Fax: Email: sburton@plattenv.com

Air Permit Number: Permitted Source ID/Name: SIGECO A.B. Brown Generating Station Unit #2 Permitted Maximum Process Rate: Max. Normal Operation Process Rate: Target Process Test Rat

Description of the source (including control equipment). Please see the attachments for source or process flow diagram: Industry/SCC/NAIS221112

Sampling Location Information:

Test Parameter Information: AFS #: 1812900010 FRS #: 110022937599

SCC / Description

The following state and federal regulations that apply to the proposed testing:

Location Round

Duct Diam. Distance from upstream dist. Distance from

downstream dist. Number of

Traverse Ports Equiv. Diam Min.Travers Points Rect. Duct Length /Width Unit 2 Stack 16.25 0 0 4 0 24 0 0

Target Parameter Test Method Number of

Test Runs Test Run

Duration Sample

Points Comments Location Custom 18 3 120 0 Unit 2 Stack Custom 0031 3 120 0 Unit 2 Stack Custom 0010 3 120 0 Unit 2 Stack Formaldehyde 316 3 120 0 Unit 2 Stack % H2O Method 1 - 4 0 Unit 2 Stack Carbon Monoxide Method 10 3 120 0 Unit 2 Stack Total organic compounds

(TOC) as Propane Method 25A 3 120 0 Unit 2 Stack



### Friday, August 12, 2011 Page 2 of 17

### The following describes any modifications and/or deviations to the applicable test

methods. If alternative methods were requested, see the attachments for documentation of request AND approval, including dates.

Co2 Method 3A CO2 3 120 0 Unit 2 Stack O2 Method 3A O2 3 120 0 Unit 2 Stack Sulfur Dioxide Method 6C 3 120 0 Unit 2 Stack



### Friday, August 12, 2011 Page 3 of 17

### Sampling / Stack Data Results Summary

Location Unit 2 Stack - 316 Average Run Number M316-1 M316-2 M316-3
Test Date 2/24/2010 2/24/2010 2/24/2010 Run Start Time 8:45:00 AM 11:50:00 AM 2:40:00 PM

Run Finish Time 10:51:00 AM 1:56:00 PM 4:46:00 PM Net Run Time, minutes 120 120 120 Dry Gas Meter Volume Sampled, dscf 70.403 69.707 70.094 70.068 Moisture Content of Stack Gas, % 14.09 13.90 14.18 14.057 Moisture Saturation at Stack Gas Temperature, % 14.70 14.77 14.77 14.747 Carbon Dioxide, % 12.91 13.08 13.211 13.067 Oxygen, % 5.6841 5.671 5.4732 5.609 Average Stack Gas Temperature, °F 127.83 128.00 128.00 127.943 Dry Volumetric Flow Rate, dry scfm 4,020.0 4,023.8 4,037.9 4,027.233 Actual Wet Volumetric Flue Gas Flow Rate, acfm 5,376.7 5,371.5 5,407.8 5,385.333 Percent Isokinetic of Sampling Rate, % 95.4 94.3 94.5 94.733 F-Factor, dscfm/MMBtu @ %O2 9737 9696 9835 9,756.000
Fw 0 0 0 0.000
Fc 0 0 0 0.000



### Friday, August 12, 2011 Page 4 of 17

### Location Unit 2 Stack - Method 1 - 4 Average

Run Number M4-1 M4-2 M4-3
Test Date 3/4/2010 3/4/2010 3/4/2010 Run Start Time 9:50:00 AM 12:30:00 PM 2:52:00 PM

Run Finish Time 11:50:00 AM2:30:00 PM 4:52:00 PM Net Run Time, minutes 120 120 120 Dry Gas Meter Volume Sampled, dscf 82.619 85.844 88.567 85.677 Moisture Content of Stack Gas, % 9.55 9.11 9.39 9.350 Moisture Saturation at Stack Gas Temperature, % Carbon Dioxide, % 0 0 0 0.000 Oxygen, % 0 0 0 0.000 Average Stack Gas Temperature, °F Dry Volumetric Flow Rate, dry scfm Actual Wet Volumetric Flue Gas Flow Rate, acfm Percent Isokinetic of Sampling Rate, % F-Factor, dscfm/MMBtu @ %O2 0 0 0 0.000
Fw 0 0 0 0.000
Fc 0 0 0 0.000



### Location Unit 2 Stack - Method 10 Average Run Number 1 2 3
Test Date 2/24/2010 2/24/2010 2/24/2010 Run Start Time 8:45:00 AM 11:50:00 AM 2:40:00 PM

Run Finish Time 10:54:00 AM 1:49:00 PM 4:39:00 PM Carbon Dioxide, % 0 0 0 0.000 Oxygen, % 5.6841 5.671 5.4732 5.609 Dry Volumetric Flow Rate, dry scfm 0 0 0 0.000 F-Factor, dscfm/MMBtu @ %O2 9737 9696 9835 9,756.000 Moisture, % 0 0 0 0.000 Fuel Type Override Override Override
Fw 0 0 0 0.000
Fc 0 0 0 0.000



### Friday, August 12, 2011 Page 5 of 17

### Location Unit 2 Stack - Method 25A Average

Run Number 1 2 3
Test Date 2/24/2010 2/24/2010 2/24/2010 Run Start Time 8:45:00 AM 11:50:00 AM 2:40:00 PM

Run Finish Time 10:44:00 AM 1:49:00 PM 4:39:00 PM Carbon Dioxide, % 0 0 0 0.000 Oxygen, % 5.6841 5.671 5.473 5.609 Dry Volumetric Flow Rate, dry scfm 0 0 0 0.000 F-Factor, dscfm/MMBtu @ %O2 9737 9696 9835 9,756.000 Moisture, % 14.1 13.2 14.2 13.833 Fuel Type Override Override Override
Fw 0 0 0 0.000
Fc 0 0 0 0.000



### Location Unit 2 Stack - Method 3A CO2 Average Run Number 1 2 3
Test Date 2/24/2010 2/24/2010 2/24/2010 Run Start Time 8:45:00 AM 11:50:00 AM 2:40:00 PM

Run Finish Time 10:54:00 AM 1:49:00 PM 4:39:00 PM Carbon Dioxide, % 0 0 0 0.000 Oxygen, % 0 0 0 0.000 Dry Volumetric Flow Rate, dry scfm 0 0 0 0.000 F-Factor, dscfm/MMBtu @ %O2 0 0 0 0.000 Moisture, % 0 0 0 0.000 Fuel Type
Fw 0 0 0 0.000
Fc 0 0 0 0.000



### Friday, August 12, 2011 Page 6 of 17

### Location Unit 2 Stack - Method 3A O2 Average

Run Number 1 2 3
Test Date 2/24/2010 2/24/2010 2/24/2010 Run Start Time 8:45:00 AM 11:50:00 AM 2:40:00 PM

Run Finish Time 10:54:00 AM 1:49:00 PM 4:39:00 PM Carbon Dioxide, % 0 0 0 0.000 Oxygen, % 5.6841 5.671 5.4732 5.609 Dry Volumetric Flow Rate, dry scfm 0 0 0 0.000 F-Factor, dscfm/MMBtu @ %O2 0 0 0 0.000 Moisture, % 0 0 0 0.000 Fuel Type
Fw 0 0 0 0.000
Fc 0 0 0 0.000



### Friday, August 12, 2011 Page 7 of 17

### Emissions Summary

Location: stack - Method 10 Compound: Carbon Monoxide Average Run 1 2 3 lb/mmBtuO2 0.00E+00 0.00E+00 0.00E+00 0.000 ppm 0.00E+00 0.00E+00 0.00E+00 0.000 ppm@7%O2 0.00E+00 0.00E+00 0.00E+00 0.000



### Location: stack - Method 25A Compound: Total organic compounds (TOC) as Average Run 1 2 3 lb/mmBtuO2 3.73E-04 3.48E-04 4.83E-04 0.000 ppm 9.10E-01 8.44E-01 1.17E+00 0.975 ppm@7%O2 8.60E-01 8.02E-01 1.11E+00 0.924



### Location: stack - Method 29 

### Compound: Antimony Average RunNumber 4 2 3 Mass_mg 0.328983 0.201963 0.402913 0.311 lb/mmBtuO2 5.66E-05 3.72E-05 7.19E-05 0.000 

### Compound: Arsenic Average RunNumber 4 2 3 Mass_mg 0.024403 0.021873 0.030363 0.026 lb/mmBtuO2 4.20E-06 4.03E-06 5.42E-06 0.000 

### Compound: Beryllium Average RunNumber 4 2 3 Mass_mg 0.00039 0.00036 0.00041 0.000 lb/mmBtuO2 6.71E-08 6.63E-08 7.31E-08 0.000 

### Compound: Cadmium Average RunNumber 4 2 3 Mass_mg 0.001653 0.001273 0.012 0.005 lb/mmBtuO2 2.84E-07 2.34E-07 2.14E-06 0.000 

### Compound: Chromium Average RunNumber 4 2 3 Mass_mg 0.01805 0.0253 0.021 0.021 lb/mmBtuO2 3.11E-06 4.66E-06 3.75E-06 0.000 

### Compound: Cobalt Average RunNumber 4 2 3



### Friday, August 12, 2011 Page 8 of 17Mass_mg 0.121905 0.110901 0.12895 0.121 lb/mmBtuO2 2.10E-05 2.04E-05 2.30E-05 0.000 

### Compound: Lead Average RunNumber 4 2 3 Mass_mg 0.02426 0.01776 0.02061 0.021 lb/mmBtuO2 4.17E-06 3.27E-06 3.68E-06 0.000 

### Compound: Manganese Average RunNumber 4 2 3 Mass_mg 0.03513 0.0305 0.04324 0.036 lb/mmBtuO2 6.05E-06 5.62E-06 7.71E-06 0.000 

### Compound: Nickel Average RunNumber 4 2 3 Mass_mg 4.46186 3.67116 4.59296 4.242 lb/mmBtuO2 7.68E-04 6.76E-04 8.19E-04 0.001 

### Compound: Selenium Average RunNumber 4 2 3 Mass_mg 0.0184 0.0208 0.0187 0.019 lb/mmBtuO2 3.17E-06 3.83E-06 3.34E-06 0.000



### Location: stack - Method 5 Compound: Filterable Particulate Average RunNumber 2 3 4 Mass_mg 353.4 467.6 469.5 430.167 lb/mmBtuO2 6.51E-02 8.34E-02 8.08E-02 0.076



### Location: stack - Method 6C Compound: Sulfur Dioxide Average Run 1 2 3 lb/mmBtuO2 1.47E+00 1.45E+00 1.45E+00 1.457 ppm 6.68E+02 6.59E+02 6.57E+02 661.333 ppm@7%O2 6.33E+02 6.24E+02 6.25E+02 627.333



### Location: stack - Method 7E 

### Compound: Nitrogen oxides (NOx) Average Run 1 2 3 lb/mmBtuO2 4.89E-01 4.80E-01 4.78E-01 0.482 ppm 3.08E+02 3.04E+02 3.01E+02 304.333 ppm@7%O2 2.92E+02 2.88E+02 2.86E+02 288.667



### Location: stack - OTM - 27/28



### Friday, August 12, 2011 Page 9 of 17

### Compound: Filterable Particulate Average RunNumber 2 3 4 Mass_mg 110.8 157.4 145.3 137.833 lb/mmBtuO2 2.74E-02 3.57E-02 3.27E-02 0.032 

### Compound: Filterable PM2.5 Average RunNumber 2 3 4 Mass_mg 90.2 132 144 122.067 lb/mmBtuO2 2.23E-02 2.99E-02 3.24E-02 0.028 

### Compound: Inorganic (Aqueous) Condensible P Average RunNumber 2 3 4 Mass_mg 212.5 162.3 128.4 167.733 lb/mmBtuO2 5.26E-02 3.68E-02 2.89E-02 0.039 

### Compound: Organic Condensible Particulate Average RunNumber 2 3 4 Mass_mg 113.5 172.8 83.2 123.167 lb/mmBtuO2 2.81E-02 3.92E-02 1.87E-02 0.029 

### Compound: Total Particulate Average RunNumber 2 3 4 Mass_mg 492.1 533.5 395.4 473.667 lb/mmBtuO2 1.22E-01 1.21E-01 8.90E-02 0.111 

### Compound: Total PM2.5 Average RunNumber 2 3 4 Mass_mg 414.2 465.1 353.6 410.967 lb/mmBtuO2 1.02E-01 1.05E-01 7.96E-02 0.096



### Friday, August 12, 2011 Page 10 of 17

### Process Run Data

APCD Run Data

Process Lab Run Data



### Friday, August 12, 2011 Page 11 of 17

### Sampling / Stack Data Results Detail

Location Unit 2 Stack - 316 Average Run Number M316-1 M316-2 M316-3 Test Date 2/24/2010 2/24/2010 2/24/2010 Run Start Time 8:45:00 AM11:50:00 AM 2:40:00 PM Run Finish Time 10:51:00 AM 1:56:00 PM 4:46:00 PM Net Traversing Points 28 28 28 Net Run Time, minutes 120 120 120 Nozzle Diameter, inches 0.201 0.201 0.201 0.201 Pitot Tube Coefficient 0.84 0.84 0.84 0.840 Dry Gas Meter Calibration Factor 1.006 1.006 1.006 1.006 Barometric Pressure, inches of Mercury 29.28 29.28 29.28 29.280 Average Orifice Meter Differential, inches H2O 1.14 1.14 1.16 1.147 Dry Gas Meter Volume Sampled, cubic feet 71.283 71.280 71.721 71.428 Average Dry Gas Meter Temperature, °F 67.81 73.06 73.42 71.430 Dry Gas Meter Volume Sampled, dscf 70.403 69.707 70.094 70.068 Total Moisture Liquid collected, g 245.4 239 246 243.467 Volume of Water Vapor, standard cubic feet 11.55 11.25 11.58 11.460 Moisture Content of Stack Gas, % 14.09 13.90 14.18 14.057 Moisture Saturation at Stack Gas Temperature, % 14.70 14.77 14.77 14.747 Dry Mole Fraction 0.8591 0.861 0.8582 0.859 Carbon Dioxide, % 12.91 13.08 13.211 13.067 Oxygen, % 5.6841 5.671 5.4732 5.609 Carbon Monoxide & Nitrogen, % 81.4059 81.249 81.3158 81.324 Fuel Factor 1.18 1.16 1.17 Dry Molecular Weight, lb/lb-Mole 30.29 30.32 30.33 30.313 Wet Molecular weight, lb/lb-Mole 28.56 28.61 28.58 28.583 Flue Gas Static Pressure, inches of H2O -4 -4 -4 -4.000 Absolute Flue Gas Pressure, inches of Mercury 28.99 28.99 28.99 28.990 Average Stack Gas Temperature, °F 127.83 128.00 128.00 127.943 Average Velocity Head, inches of H2O 1.0576123517 32381.057313199

970451.0705787838

421 1.062

Average Stack Gas Velocity, feet/second 62.23 62.17 62.59 62.330 Stack Cross-Sectional Area, square feet 1.440 1.440 1.440 1.440 Dry Volumetric Flow Rate, dry scfm 4,020.0 4,023.8 4,037.9 4,027.233 Actual Wet Volumetric Flue Gas Flow Rate, acfm 5,376.7 5,371.5 5,407.8 5,385.333 Percent Isokinetic of Sampling Rate, % 95.4 94.3 94.5 94.733 Percent Excess Air, % 36.0 35.9 34.2 35.367 F-Factor, dscfm/MMBtu @ %O2 9737 9696 9835 9,756.000 Round Duct Diameter, inches 16.25 16.25 16.25 Rectangular Duct Width, inches 0 0 0 Rectangular Duct Length, inches 0 0 0 Fw 0 0 0 0.000 Fc 0 0 0 0.000



### Friday, August 12, 2011 Page 12 of 17

### Location Unit 2 Stack - Method 1 - 4 Average

Run Number M4-1 M4-2 M4-3 Test Date 3/4/2010 3/4/2010 3/4/2010 Run Start Time 9:50:00 AM12:30:00 PM 2:52:00 PM Run Finish Time 11:50:00 AM 2:30:00 PM 4:52:00 PM Net Traversing Points 2 2 2 Net Run Time, minutes 120 120 120 Nozzle Diameter, inches 0 0 0 0.000 Pitot Tube Coefficient 0 0 0 0.000 Dry Gas Meter Calibration Factor 0.996 0.996 0.996 0.996 Barometric Pressure, inches of Mercury 29.25 29.25 29.25 29.250 Average Orifice Meter Differential, inches H2O 1.60 1.60 1.60 1.600 Dry Gas Meter Volume Sampled, cubic feet 86.112 89.972 92.483 89.522 Average Dry Gas Meter Temperature, °F 78.00 81.00 79.00 79.333 Dry Gas Meter Volume Sampled, dscf 82.619 85.844 88.567 85.677 Total Moisture Liquid collected, g 185.3 182.7 195 187.667 Volume of Water Vapor, standard cubic feet 8.72 8.60 9.18 8.833 Moisture Content of Stack Gas, % 9.55 9.11 9.39 9.350 Moisture Saturation at Stack Gas Temperature, % Dry Mole Fraction Carbon Dioxide, % 0 0 0 0.000 Oxygen, % 0 0 0 0.000 Carbon Monoxide & Nitrogen, % 100 100 100 100.000 Fuel Factor Dry Molecular Weight, lb/lb-Mole 28.00 28.00 28.00 28.000 Wet Molecular weight, lb/lb-Mole Flue Gas Static Pressure, inches of H2O 0 0 0 0.000 Absolute Flue Gas Pressure, inches of Mercury 29.25 29.25 29.25 29.250 Average Stack Gas Temperature, °F Average Velocity Head, inches of H2O Average Stack Gas Velocity, feet/second Stack Cross-Sectional Area, square feet 1.440 1.440 1.440 1.440 Dry Volumetric Flow Rate, dry scfm Actual Wet Volumetric Flue Gas Flow Rate, acfm Percent Isokinetic of Sampling Rate, % Percent Excess Air, % 0.0 0.0 0.0 0.000 F-Factor, dscfm/MMBtu @ %O2 0 0 0 0.000 Round Duct Diameter, inches 16.25 16.25 16.25 Rectangular Duct Width, inches 0 0 0 Rectangular Duct Length, inches 0 0 0 Fw 0 0 0 0.000 Fc 0 0 0 0.000



### Friday, August 12, 2011 Page 13 of 17

### Location Unit 2 Stack - Method 10 Average

Run Number 1 2 3 Test Date 2/24/2010 2/24/2010 2/24/2010 Run Start Time 8:45:00 AM11:50:00 AM 2:40:00 PM Run Finish Time 10:54:00 AM 1:49:00 PM 4:39:00 PM Carbon Dioxide, % 0 0 0 0.000 Oxygen, % 5.6841 5.671 5.4732 5.609 Fuel Factor 0 0 0 Dry Volumetric Flow Rate, dry scfm 0 0 0 0.000 F-Factor, dscfm/MMBtu @ %O2 9737 9696 9835 9,756.000 Moisture, % 0 0 0 0.000 Analyzer Make Thermo Thermo Thermo Analyzer Model 48I 48I 48I Analyzer Serial Number 48I-ANPAA48I-ANPAA 48I-ANPAA Operating Range 906.7 906.7 906.7 906.700 Operating Units ppm ppm ppm No. Readings/Avg. 120 120 120 120.000 Calibration Set 2 2 2 2.000 Calibration Pre Zero Cylinder ID CC240000 CC240000 CC240000 Calibration Pre Zero Cylinder Instrument Response 0.2 -0.8 -0.7 -0.433 Calibration Pre Zero Cylinder Bias -0.07 -0.18 -0.17 -0.140 Calibration Pre Zero Cylinder Drift 0 0 0 0.000 Calibration Pre High Cylinder ID XCO334707BXCO334707 BXCO334707B

Calibration Pre High Cylinder Instrument Response 461.8 459.2 458.7 459.900 Calibration Pre High Cylinder Bias 0.4 0.11 0.06 0.190 Calibration Pre High Cylinder Drift 0 0 0 0.000 Calibration Post Zero Cylinder ID CC240000 CC240000 CC240000 Calibration Post Zero Cylinder Instrument Response -0.8 -0.7 -0.4 -0.633 Calibration Post Zero Cylinder Bias -0.18 -0.17 -0.13 -0.160 Calibration Post Zero Cylinder Drift 0.119.999999999 99998E-03 0.04 0.053

Calibration Post High Cylinder ID XCO334707BXCO334707 BXCO334707B

Calibration Post High Cylinder Instrument Response 459.2 458.7 459.3 459.067 Calibration Post High Cylinder Bias 0.11 0.06 0.12 0.097 Calibration Post High Cylinder Drift 0.29 0.05 0.06 0.133 Cavg 461.3 471 605.2 512.500 Cavg Units ppmvd ppmvd ppmvd Cgas 456.1606 467.3065 600.2402 507.902 Cgas Units ppmvd ppmvd ppmvd Fuel Type Override Override Override Fw 0 0 0 0.000 Fc 0 0 0 0.000 Cgasw 0 0 0 0.000 Cgasw Units



### Friday, August 12, 2011 Page 14 of 17

### Location Unit 2 Stack - Method 25A Average

Run Number 1 2 3 Test Date 2/24/2010 2/24/2010 2/24/2010 Run Start Time 8:45:00 AM11:50:00 AM 2:40:00 PM Run Finish Time 10:44:00 AM 1:49:00 PM 4:39:00 PM Carbon Dioxide, % 0 0 0 0.000 Oxygen, % 5.6841 5.671 5.473 5.609 Fuel Factor 0 0 0 Dry Volumetric Flow Rate, dry scfm 0 0 0 0.000 F-Factor, dscfm/MMBtu @ %O2 9737 9696 9835 9,756.000 Moisture, % 14.1 13.2 14.2 13.833 Analyzer Make VIG VIG VIG Analyzer Model 200 200 200 200.000 Analyzer Serial Number R19802 R19802 R19802 Operating Range 38 38 38 38.000 Operating Units ppm ppm ppm No. Readings/Avg. 120 120 120 120.000 Calibration Set 4 4 4 4.000 Calibration Pre Zero Cylinder ID CC240000 CC240000 CC240000 Calibration Pre Zero Cylinder Instrument Response 0.13 0.11 0.06 0.100 Calibration Pre Zero Cylinder Bias 0.39 0.34 0.21 0.313 Calibration Pre Zero Cylinder Drift 0 0 0 0.000 Calibration Pre High Cylinder ID CC158728 CC158728 CC158728 Calibration Pre High Cylinder Instrument Response 10.08 10.12 10.19 10.130 Calibration Pre High Cylinder Bias -0.45 -0.34 -0.16 -0.317 Calibration Pre High Cylinder Drift 0 0 0 0.000 Calibration Post Zero Cylinder ID CC240000 CC240000 CC240000 Calibration Post Zero Cylinder Instrument Response 0.11 0.06 0.19 0.120 Calibration Post Zero Cylinder Bias 0.34 0.21 0.55 0.367 Calibration Post Zero Cylinder Drift 0.05 0.13 0.34 0.173 Calibration Post High Cylinder ID CC158728 CC158728 CC158728 Calibration Post High Cylinder Instrument Response 10.12 10.19 10.09 10.133 Calibration Post High Cylinder Bias -0.34 -0.16 -0.42 -0.307 Calibration Post High Cylinder Drift 0.11 0.18 0.26 0.183 Cavg 5.17 3.4 3.56 4.043 Cavg Units ppmvw ppmvw ppmvw Cgas 5.9555 3.8343 4.0415 4.610 Cgas Units ppmvd ppmvd ppmvd Fuel Type Override Override Override Fw 0 0 0 0.000 Fc 0 0 0 0.000 Cgasw 5.1157815631 26253.328167825

223443.4675836245

6316 3.971

Cgasw Units ppmvw ppmvw ppmvw



### Friday, August 12, 2011 Page 15 of 17

### Location Unit 2 Stack - Method 3A CO2 Average

Run Number 1 2 3 Test Date 2/24/2010 2/24/2010 2/24/2010 Run Start Time 8:45:00 AM11:50:00 AM 2:40:00 PM Run Finish Time 10:54:00 AM 1:49:00 PM 4:39:00 PM Carbon Dioxide, % 0 0 0 0.000 Oxygen, % 0 0 0 0.000 Fuel Factor 0 0 0 Dry Volumetric Flow Rate, dry scfm 0 0 0 0.000 F-Factor, dscfm/MMBtu @ %O2 0 0 0 0.000 Moisture, % 0 0 0 0.000 Analyzer Make Servomex Servomex Servomex Analyzer Model 0114OD1 0144OD1 0144OD1 Analyzer Serial Number 3790 3790 3790 3,790.000 Operating Range 19.2 19.2 19.2 19.200 Operating Units % % % No. Readings/Avg. 120 120 120 120.000 Calibration Set 0 0 0 0.000 Calibration Pre Zero Cylinder ID CC240000 CC240000 CC240000 Calibration Pre Zero Cylinder Instrument Response 0.01 0.03 0.03 0.023 Calibration Pre Zero Cylinder Bias 0 0.1 0.1 0.067 Calibration Pre Zero Cylinder Drift 0 0 0 0.000 Calibration Pre High Cylinder ID CC287521 CC287521 CC287521 Calibration Pre High Cylinder Instrument Response 9.85 9.81 9.75 9.803 Calibration Pre High Cylinder Bias -0.05 -0.26 -0.57 -0.293 Calibration Pre High Cylinder Drift 0 0 0 0.000 Calibration Post Zero Cylinder ID CC240000 CC240000 CC240000 Calibration Post Zero Cylinder Instrument Response 0.03 0.03 0.04 0.033 Calibration Post Zero Cylinder Bias 0.1 0.1 0.16 0.120 Calibration Post Zero Cylinder Drift 0.1 0 0.06 0.053 Calibration Post High Cylinder ID CC287521 CC287521 CC287521 Calibration Post High Cylinder Instrument Response 9.81 9.75 9.62 9.727 Calibration Post High Cylinder Bias -0.26 -0.57 -1.25 -0.693 Calibration Post High Cylinder Drift 0.21 0.31 0.68 0.400 Cavg 12.9 13 13 12.967 Cavg Units %vd %vd %vd Cgas 12.9102 13.0804 13.2109 13.067 Cgas Units %vd %vd %vd Fuel Type Fw 0 0 0 0.000 Fc 0 0 0 0.000 Cgasw 0 0 0 0.000 Cgasw Units



### Friday, August 12, 2011 Page 16 of 17

### Location Unit 2 Stack - Method 3A O2 Average

Run Number 1 2 3 Test Date 2/24/2010 2/24/2010 2/24/2010 Run Start Time 8:45:00 AM11:50:00 AM 2:40:00 PM Run Finish Time 10:54:00 AM 1:49:00 PM 4:39:00 PM Carbon Dioxide, % 0 0 0 0.000 Oxygen, % 5.6841 5.671 5.4732 5.609 Fuel Factor 0 0 0 Dry Volumetric Flow Rate, dry scfm 0 0 0 0.000 F-Factor, dscfm/MMBtu @ %O2 0 0 0 0.000 Moisture, % 0 0 0 0.000 Analyzer Make Servomex Servomex Servomex Analyzer Model 0144OD1 0144OD1 0144OD1 Analyzer Serial Number 3790 3790 3790 3,790.000 Operating Range 22.5 22.5 22.5 22.500 Operating Units % % % No. Readings/Avg. 120 120 120 120.000 Calibration Set 5 5 5 5.000 Calibration Pre Zero Cylinder ID CC240000 CC240000 CC240000 Calibration Pre Zero Cylinder Instrument Response 0.02 0.01 0.01 0.013 Calibration Pre Zero Cylinder Bias -0.09 -0.13 -0.13 -0.117 Calibration Pre Zero Cylinder Drift 0 0 0 0.000 Calibration Pre High Cylinder ID CC266906 CC266906 CC266906 Calibration Pre High Cylinder Instrument Response 12.5 12.37 12.35 12.407 Calibration Pre High Cylinder Bias 0.67 0.09 0 0.253 Calibration Pre High Cylinder Drift 0 0 0 0.000 Calibration Post Zero Cylinder ID CC240000 CC240000 CC240000 Calibration Post Zero Cylinder Instrument Response 0.01 0.01 0.07 0.030 Calibration Post Zero Cylinder Bias -0.13 -0.13 0.13 -0.043 Calibration Post Zero Cylinder Drift 0.04 0 0.26 0.100 Calibration Post High Cylinder ID CC266906 CC266906 CC266906 Calibration Post High Cylinder Instrument Response 12.37 12.35 12.55 12.423 Calibration Post High Cylinder Bias 0.09 0 0.89 0.327 Calibration Post High Cylinder Drift 0.58 0.09 0.89 0.520 Cavg 5.69 5.64 5.5 5.610 Cavg Units %vd %vd %vd Cgas 5.6841 5.671 5.4732 5.609 Cgas Units %vd %vd %vd Fuel Type Fw 0 0 0 0.000 Fc 0 0 0 0.000 Cgasw 0 0 0 0.000 Cgasw Units



### Friday, August 12, 2011 Page 17 of 17