### Name: John M. McManus

Title: Vice President- Environmental Service Company: American Electric Power Sign Date: 8/27/2010 Name: Scott W. Banach Title: Director, Project Engineering Company: Platt Environmental Sign Date: 8/26/2010 Permitted Facility Representative / Date Testing Company Representative / Date 

## Tanners Creek Unit 4 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.

Wednesday, January 19, 2011 Page 1 of 18

### Tanners Creek Unit 4
8/27/2010 Facility Information:
Tanners Creek Plant
800 AEP Drive

Lawrenceburg IN 47025 Contact:Paul Jackson Phone: 614-716-3278 Fax: 614-716-1252 Email: pmjackson@aep.com Testing Company: Platt Environmental Services, Inc. 1520 Kensington Road
Suite 204
Oak Brook IL 60523 Contact:Scott Banach Phone:630-521-9400 Fax: 630-521-9494 Email: sbanach@plattenv.com

Air Permit Number: T029-27545-00002 Permitted Source ID/Name: Boiler 4 Unit 4 Permitted Maximum Process Rate: N/A Max. Normal Operation Process Rate: N/A Target Process Test Rate N/A

Description of the source (including control equipment). Please see the attachments for source or process flow diagram: Electric generating cyclone boiler utilizing bituminous/ subbituminous blend (20/80) coal as the primary fuel. Industry/SCC/NAIS 221112

Sampling Location Information:

Test Parameter Information: AFS #: FRS #:

SCC / Description10100223 External Combustion Boilers - Electric Generation - Bituminous/Subbituminous Coal - Cyclone Furnace (Subbituminous Coal)

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 Stack 323 162 646 4 0 12

Target Parameter Test Method Number of

Test Runs Test Run

Duration Sample

Points Comments Location Carbon Monoxide Method 10 3 0 Stack Total organic compounds

(TOC) Method 25A 3 0 Stack
Hydrogen Fluoride Method 26A 3 0 Stack Hydrogen Chloride Method 26A 3 0 Stack Total PM2.5 OTM - 27/28 3 0 Stack Filterable PM2.5 OTM - 27/28 3 0 Stack Filterable Particulate OTM - 27/28 3 0 Stack


### Wednesday, January 19, 2011 Page 2 of 18

### Tanners Creek Unit 4
8/27/2010

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.

Total Particulate OTM - 27/28 3 0 Stack Selenium Method 29 3 0 Stack Antimony Method 29 3 0 Stack Arsenic Method 29 3 0 Stack Beryllium Method 29 3 0 Stack Cadmium Method 29 3 0 Stack Chromium Method 29 3 0 Stack Cobalt Method 29 3 0 Stack Lead Method 29 3 0 Stack Nickel Method 29 3 0 Stack Filterable Particulate Method 29 3 0 Stack Manganese Method 29 3 0 Stack Co2 Method 3A CO2 3 60 0 Stack O2 Method 3A O2 3 60 0 Stack



### Wednesday, January 19, 2011 Page 3 of 18

### Tanners Creek Unit 4
8/27/2010 Sampling / Stack Data Results Summary


### Location Stack - Method 10 Average Run Number 1 2 3
Test Date 5/28/2010 5/28/2010 5/28/2010 Run Start Time 2:40:00 PM5:05:00 PM 7:30:00 PM Run Finish Time 4:39:00 PM7:04:00 PM 9:29:00 PM Carbon Dioxide, % 14.1 14.1 14.1 14.100 Oxygen, % 5 5 5.1 5.033 Dry Volumetric Flow Rate, dry scfm 1104450 1105435 1101729 1,103,871.33 3 F-Factor, dscfm/MMBtu @ %O2 9780 9780 9780 9,780.000 Moisture, % 11.6 10.8 11.1 11.167 Fuel Type Coal - Bituminous Coal -

Bituminous Coal -

Bituminous
Fw 10640 10640 10640 10,640.000
Fc 1800 1800 1800 1,800.000



### Location Stack - Method 25A Average Run Number 1 2 3
Test Date 5/28/2010 5/28/2010 5/28/2010 Run Start Time 2:40:00 PM5:05:00 PM 7:30:00 PM Run Finish Time 4:39:00 PM7:04:00 PM 9:29:00 PM Carbon Dioxide, % 14.1 14.1 14.1 14.100 Oxygen, % 5 5 5.1 5.033 Dry Volumetric Flow Rate, dry scfm 1104450 1105435 1101729 1,103,871.33 3 F-Factor, dscfm/MMBtu @ %O2 9780 9780 9780 9,780.000 Moisture, % 11.6 10.8 11.1 11.167 Fuel Type Coal - Bituminous Coal -

Bituminous Coal -

Bituminous
Fw 10640 10640 10640 10,640.000
Fc 1800 1800 1800 1,800.000



### Wednesday, January 19, 2011 Page 4 of 18

### Tanners Creek Unit 4
8/27/2010
Location Stack - Method 26A Average Run Number M26A-1 M26A-2 M26A-3
Test Date 5/25/2010 5/26/2010 5/28/2010 Run Start Time 11:30:00 AM 10:55:00 AM 10:30:00 AM

Run Finish Time 2:45:00 PM2:05:00 PM 1:43:00 PM Net Run Time, minutes 180 180 180 Dry Gas Meter Volume Sampled, dscf 107.169 102.240 103.252 104.220 Moisture Content of Stack Gas, % 10.81 10.83 11.15 10.930 Moisture Saturation at Stack Gas Temperature, % 100.00 100.00 100.00 100.000 Carbon Dioxide, % 14.2 14.3 14 14.167 Oxygen, % 4.9 4.8 5.3 5.000 Average Stack Gas Temperature, °F 316.92 317.79 318.63 317.780 Dry Volumetric Flow Rate, dry scfm 1,129,670.21,077,736.6 1,108,113.1 1,105,173.30 0 Actual Wet Volumetric Flue Gas Flow Rate, acfm 1,922,169.8 1,842,620.0 1,916,024.3 1,893,604.70 0 Percent Isokinetic of Sampling Rate, % 102.2 102.2 100.3 101.567 F-Factor, dscfm/MMBtu @ %O2 9780 9780 9780 9,780.000
Fw 10640 10640 10640 10,640.000
Fc 1800 1800 1800 1,800.000



### Wednesday, January 19, 2011 Page 5 of 18

### Tanners Creek Unit 4
8/27/2010
Location Stack - Method 29 Average Run Number M29-1 M29-2 M29-3
Test Date 5/25/2010 5/26/2010 5/28/2010 Run Start Time 6:50:00 AM 6:15:00 AM 6:05:00 AM

Run Finish Time 11:01:00 AM 10:26:00 AM 10:16:00 AM

Net Run Time, minutes 240 240 240 Dry Gas Meter Volume Sampled, dscf 141.239 142.155 141.955 141.783 Moisture Content of Stack Gas, % 9.97 11.56 11.06 10.863 Moisture Saturation at Stack Gas Temperature, % 100.00 100.00 100.00 100.000 Carbon Dioxide, % 14.2 14.3 14 14.167 Oxygen, % 5 4.8 5.2 5.000 Average Stack Gas Temperature, °F 312.21 313.46 307.88 311.183 Dry Volumetric Flow Rate, dry scfm 1,127,294.61,125,286.5 1,117,749.7 1,123,443.60 0 Actual Wet Volumetric Flue Gas Flow Rate, acfm 1,888,711.1 1,928,998.1 1,904,074.8 1,907,261.33 3 Percent Isokinetic of Sampling Rate, % 101.2 102.0 102.6 101.933 F-Factor, dscfm/MMBtu @ %O2 9780 9780 9780 9,780.000
Fw 10640 10640 10640 10,640.000
Fc 1800 1800 1800 1,800.000



### Location Stack - Method 3A CO2 Average Run Number 1 2 3
Test Date 5/28/2010 5/28/2010 5/28/2010 Run Start Time 2:40:00 PM5:05:00 PM 7:30:00 PM Run Finish Time 4:39:00 PM7:04:00 PM 9:29:00 PM Carbon Dioxide, % 14.1 14.1 14.1 14.100 Oxygen, % 5 5 5.1 5.033 Dry Volumetric Flow Rate, dry scfm 1104450 1105435 1101729 1,103,871.33 3 F-Factor, dscfm/MMBtu @ %O2 9780 9780 9780 9,780.000 Moisture, % 11.6 10.8 11.1 11.167 Fuel Type Coal - Bituminous Coal -

Bituminous Coal -

Bituminous
Fw 10640 10640 10640 10,640.000
Fc 1800 1800 1800 1,800.000



### Wednesday, January 19, 2011 Page 6 of 18

### Tanners Creek Unit 4
8/27/2010
Location Stack - Method 3A O2 Average Run Number 1 2 3
Test Date 5/28/2010 5/28/2010 5/28/2010 Run Start Time 2:40:00 PM5:05:00 PM 7:30:00 PM Run Finish Time 4:39:00 PM7:04:00 PM 9:29:00 PM Carbon Dioxide, % 14.1 14.1 14.1 14.100 Oxygen, % 5 5 5.1 5.033 Dry Volumetric Flow Rate, dry scfm 1104450 1105435 1101729 1,103,871.33 3 F-Factor, dscfm/MMBtu @ %O2 9780 9780 9780 9,780.000 Moisture, % 11.6 10.8 11.1 11.167 Fuel Type Coal - Bituminous Coal -

Bituminous Coal -

Bituminous
Fw 10640 10640 10640 10,640.000
Fc 1800 1800 1800 1,800.000



### Location Stack - OTM - 27/28 Average Run Number MOTM27/O TM28-1 MOTM27/

OTM28-2 MOTM27/O

TM28-3
Test Date 5/25/2010 5/26/2010 5/28/2010 Run Start Time 6:50:00 AM 6:00:00 AM 5:50:00 AM

Run Finish Time 1:06:00 PM 12:15:00 PM 12:05:00 PM

Net Run Time, minutes 360 360 360 Dry Gas Meter Volume Sampled, dscf 124.524 135.433 137.650 132.536 Moisture Content of Stack Gas, % 12.32 10.26 8.51 10.363 Moisture Saturation at Stack Gas Temperature, % 100.00 100.00 100.00 100.000 Carbon Dioxide, % 14.4 14.3 14 14.233 Oxygen, % 4.9 4.8 5.3 5.000 Average Stack Gas Temperature, °F 310.24 310.61 308.85 309.900 Dry Volumetric Flow Rate, dry scfm 1,133,598.21,155,386.8 1,170,982.3 1,153,322.43 3 Actual Wet Volumetric Flue Gas Flow Rate, acfm 1,966,212.41,945,386.1 1,939,582.0 1,950,393.50 0 Percent Isokinetic of Sampling Rate, % 90.1 96.1 96.4 94.200 F-Factor, dscfm/MMBtu @ %O2 9780 9780 9780 9,780.000
Fw 10640 10640 10640 10,640.000
Fc 1800 1800 1800 1,800.000



### Wednesday, January 19, 2011 Page 7 of 18

### Tanners Creek Unit 4
8/27/2010 Emissions Summary


### Location: Stack - Method 10 Compound: Carbon Monoxide Average Run 1 2 3 lb/mmBtuO2 7.14E-02 6.40E-02 9.09E-02 0.075 ppm 7.64E+01 6.84E+01 9.66E+01 80.467 ppm@7%O2 6.68E+01 5.98E+01 8.50E+01 70.533



### Location: Stack - Method 25A Compound: Total organic compounds (TOC) Average Run 1 2 3 lb/mmBtuO2 3.82E-05 3.65E-05 3.27E-05 0.000 ppm 9.54E-02 9.10E-02 8.10E-02 0.089 ppm@7%O2 8.34E-02 7.96E-02 7.13E-02 0.078



### Location: Stack - Method 26A Compound: Hydrogen Chloride Average RunNumber M26A-1 M26A-2 M26A-3 Mass_mg 68 61 68 65.667 lb/mmBtuO2 1.79E-02 1.67E-02 1.90E-02 0.018 

### Compound: Hydrogen Fluoride Average RunNumber M26A-1 M26A-2 M26A-3 Mass_mg 14 13 15 14.000 lb/mmBtuO2 3.68E-03 3.56E-03 4.20E-03 0.004



### Location: Stack - Method 29 Compound: Antimony Average RunNumber M29-1 M29-2 M29-3 Mass_mg 0.0048 0.0048 0.0048 0.005 lb/mmBtuO2 9.63E-07 9.45E-07 9.71E-07 0.000 

### Compound: Arsenic Average RunNumber M29-1 M29-2 M29-3 Mass_mg 0.00776 0.00844 0.00839 0.008 lb/mmBtuO2 1.56E-06 1.66E-06 1.70E-06 0.000 

### Compound: Beryllium Average RunNumber M29-1 M29-2 M29-3 Mass_mg 0.00121 0.00121 0.0012 0.001 lb/mmBtuO2 2.43E-07 2.38E-07 2.43E-07 0.000



### Wednesday, January 19, 2011 Page 8 of 18

### Tanners Creek Unit 4
8/27/2010 Compound: Cadmium Average RunNumber M29-1 M29-2 M29-3 Mass_mg 0.0012 0.0012 0.0012 0.001 lb/mmBtuO2 2.41E-07 2.36E-07 2.43E-07 0.000 

### Compound: Chromium Average RunNumber M29-1 M29-2 M29-3 Mass_mg 0.01609 0.01539 0.01559 0.016 lb/mmBtuO2 3.23E-06 3.03E-06 3.15E-06 0.000 

### Compound: Cobalt Average RunNumber M29-1 M29-2 M29-3 Mass_mg 0.00178 0.00256 0.00191 0.002 lb/mmBtuO2 3.57E-07 5.04E-07 3.86E-07 0.000 

### Compound: Filterable Particulate Average RunNumber M29-1 M29-2 M29-3 Mass_mg 37.6 32.9 18.3 29.600 lb/mmBtuO2 7.54E-03 6.48E-03 3.70E-03 0.006 

### Compound: Lead Average RunNumber M29-1 M29-2 M29-3 Mass_mg 0.00787 0.00786 0.00638 0.007 lb/mmBtuO2 1.58E-06 1.55E-06 1.29E-06 0.000 

### Compound: Manganese Average RunNumber M29-1 M29-2 M29-3 Mass_mg 0.0091 0.0168 0.0096 0.012 lb/mmBtuO2 1.83E-06 3.31E-06 1.94E-06 0.000 

### Compound: Nickel Average RunNumber M29-1 M29-2 M29-3 Mass_mg 0.02281 0.02281 0.02081 0.022 lb/mmBtuO2 4.58E-06 4.49E-06 4.21E-06 0.000 

### Compound: Selenium Average RunNumber M29-1 M29-2 M29-3 Mass_mg 0.0945 0.0475 0.0747 0.072 lb/mmBtuO2 1.90E-05 9.35E-06 1.51E-05 0.000



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

### Compound: Filterable Particulate Average RunNumber MOTM27/OTM28-1 MOTM27/OTM28-2 MOTM27/OTM28-3 Mass_mg 29.2 35.4 23.5 29.367


### Wednesday, January 19, 2011 Page 9 of 18

### Tanners Creek Unit 4
8/27/2010

Process Run Data Compound: Filterable PM2.5 Average RunNumber MOTM27/OTM28-1 MOTM27/OTM28-2 MOTM27/OTM28-3 Mass_mg 21.1 22.5 18.2 20.600 

### Compound: Total Particulate Average RunNumber MOTM27/OTM28-1 MOTM27/OTM28-2 MOTM27/OTM28-3 Mass_mg 49.275 56.164 42.36 49.266 

### Compound: Total PM2.5 Average RunNumber MOTM27/OTM28-1 MOTM27/OTM28-2 MOTM27/OTM28-3 Mass_mg 41.2 43.3 37.1 40.533



### Wednesday, January 19, 2011 Page 10 of 18

### Tanners Creek Unit 4
8/27/2010 Process Run Data

APCD Run Data

Process Lab Run Data 

### Run Name Value UOM Comments Target Value 1 Subbituminous Coal Burned 227.7 tons/hr 240


### 2 Subbituminous Coal Burned 218.2 tons/hr 240
3 Subbituminous Coal Burned 193.3 tons/hr 240
1 Gross Load 481.5 MW 500


### 2 Gross Load 467.6 MW 500
3 Gross Load 421.5 MW 500
1 Opacity 1.8 % 20


### 2 Opacity 1.9 % 20
3 Opacity 2.2 % 20
1 Excess Air 16 % 20


### 1 Steam Pressure 3491.5 psig 3500
1 Steam Temperature 999.9 F 1000

Run Name Value UOM Comments Target Value 

### 1 ELECTROSTATIC PRECIPITATOR - HIGH EFFICIENCY 1.8 opacity 20

2 ELECTROSTATIC PRECIPITATOR - HIGH EFFICIENCY 1.9 opacity 20



### 3 ELECTROSTATIC PRECIPITATOR - HIGH EFFICIENCY 2.2 opacity 20

Wednesday, January 19, 2011 Page 11 of 18

### Tanners Creek Unit 4
8/27/2010 Sampling / Stack Data Results Detail


### Location Stack - Method 10 Average Run Number 1 2 3 Test Date 5/28/2010 5/28/2010 5/28/2010 Run Start Time 2:40:00 PM 5:05:00 PM 7:30:00 PM Run Finish Time 4:39:00 PM 7:04:00 PM 9:29:00 PM Carbon Dioxide, % 14.1 14.1 14.1 14.100 Oxygen, % 5 5 5.1 5.033 Fuel Factor 1.13 1.13 1.12 Dry Volumetric Flow Rate, dry scfm 1104450 1105435 11017291,103,871.3 33 F-Factor, dscfm/MMBtu @ %O2 9780 9780 9780 9,780.000 Moisture, % 11.6 10.8 11.1 11.167 Analyzer Make Analyzer Model Analyzer Serial Number Operating Range 304.7 304.7 304.7 304.700 Operating Units ppm ppm ppm No. Readings/Avg. 120 120 120 120.000 Calibration Set 0 0 0 0.000 Calibration Pre Zero Cylinder ID CC136263-CO CC136263- CO CC136263-

CO Calibration Pre Zero Cylinder Instrument Response 0 0 0 0.000 Calibration Pre Zero Cylinder Bias 0 0 0 0.000 Calibration Pre Zero Cylinder Drift 0 0 0 0.000 Calibration Pre High Cylinder ID CC7510-COCC7510-CO CC7510-CO Calibration Pre High Cylinder Instrument Response 152.9 152.9 152.9 152.900 Calibration Pre High Cylinder Bias -0.16 -0.16 -0.16 -0.160 Calibration Pre High Cylinder Drift 0 0 0 0.000 Calibration Post Zero Cylinder ID CC136263-CO CC136263- CO CC136263-

CO Calibration Post Zero Cylinder Instrument Response 0 0 0 0.000 Calibration Post Zero Cylinder Bias 0 0 0 0.000 Calibration Post Zero Cylinder Drift 0 0 0 0.000 Calibration Post High Cylinder ID CC7510-COCC7510-CO CC7510-CO Calibration Post High Cylinder Instrument Response 152.9 152.9 152.9 152.900 Calibration Post High Cylinder Bias -0.16 -0.16 -0.16 -0.160 Calibration Post High Cylinder Drift 0 0 0 0.000 Cavg 75.9 68 96 79.967 Cavg Units ppmvd ppmvd ppmvd Cgas 76.3964 68.4447 96.6279 80.490 Cgas Units ppmvd ppmvd ppmvd Fuel Type Coal - Bituminous Coal -

Bituminous Coal -

Bituminous Fw 10640 10640 1064010,640.000 Fc 1800 1800 1800 1,800.000 Cgasw 0 0 0 0.000 Cgasw Units



### Wednesday, January 19, 2011 Page 12 of 18

### Tanners Creek Unit 4
8/27/2010
Location Stack - Method 25A Average Run Number 1 2 3 Test Date 5/28/2010 5/28/2010 5/28/2010 Run Start Time 2:40:00 PM 5:05:00 PM 7:30:00 PM Run Finish Time 4:39:00 PM 7:04:00 PM 9:29:00 PM Carbon Dioxide, % 14.1 14.1 14.1 14.100 Oxygen, % 5 5 5.1 5.033 Fuel Factor 1.13 1.13 1.12 Dry Volumetric Flow Rate, dry scfm 1104450 1105435 11017291,103,871.3 33 F-Factor, dscfm/MMBtu @ %O2 9780 9780 9780 9,780.000 Moisture, % 11.6 10.8 11.1 11.167 Analyzer Make Analyzer Model Analyzer Serial Number Operating Range 100 100 100 100.000 Operating Units ppm ppm ppm No. Readings/Avg. 120 120 120 120.000 Calibration Set 3 3 3 3.000 Calibration Pre Zero Cylinder ID CC114878- THC CC114878-

THC CC114878-

THC Calibration Pre Zero Cylinder Instrument Response 0 0.01 0.01 0.007 Calibration Pre Zero Cylinder Bias 0 0.01 0.01 0.007 Calibration Pre Zero Cylinder Drift 0 0 0 0.000 Calibration Pre High Cylinder ID SG9168560B AL-THCSG9168560B

AL-THCSG9168560B

AL-THC Calibration Pre High Cylinder Instrument Response 10.22 10.11 10.09 10.140 Calibration Pre High Cylinder Bias 0 -0.11 -0.13 -0.080 Calibration Pre High Cylinder Drift 0 0 0 0.000 Calibration Post Zero Cylinder ID CC114878- THC CC114878-

THC CC114878-

THC Calibration Post Zero Cylinder Instrument Response 0.01 0.01 0.03 0.017 Calibration Post Zero Cylinder Bias 0.01 0.01 0.03 0.017 Calibration Post Zero Cylinder Drift 0.01 0 0.02 0.010 Calibration Post High Cylinder ID SG9168560B AL-THCSG9168560B

AL-THCSG9168560B

AL-THC Calibration Post High Cylinder Instrument Response 10.11 10.09 10.09 10.097 Calibration Post High Cylinder Bias -0.11 -0.13 -0.13 -0.123 Calibration Post High Cylinder Drift 0.11 0.02 0 0.043 Cavg 0.1 0.1 0.1 0.100 Cavg Units ppmvd ppmvd ppmvd Cgas 0.0954 0.091 0.081 0.089 Cgas Units ppmvd ppmvd ppmvd Fuel Type Coal - Bituminous Coal -

Bituminous Coal -

Bituminous Fw 10640 10640 1064010,640.000 Fc 1800 1800 1800 1,800.000 Cgasw 0 0 0 0.000 Cgasw Units



### Wednesday, January 19, 2011 Page 13 of 18

### Tanners Creek Unit 4
8/27/2010
Location Stack - Method 26A Average Run Number M26A-1 M26A-2 M26A-3 Test Date 5/25/2010 5/26/2010 5/28/2010 Run Start Time 11:30:00 AM10:55:00 AM 10:30:00 AM Run Finish Time 2:45:00 PM 2:05:00 PM 1:43:00 PM Net Traversing Points 28 28 28 Net Run Time, minutes 180 180 180 Nozzle Diameter, inches 0.232 0.232 0.232 0.232 Pitot Tube Coefficient 0.84 0.84 0.84 0.840 Dry Gas Meter Calibration Factor 1 1 1 1.000 Barometric Pressure, inches of Mercury 29 28.9 28.71 28.870 Average Orifice Meter Differential, inches H2O 0.99 0.92 0.96 0.957 Dry Gas Meter Volume Sampled, cubic feet 114.654 110.593 111.643 112.297 Average Dry Gas Meter Temperature, °F 88.88 92.96 89.17 90.337 Dry Gas Meter Volume Sampled, dscf 107.169 102.240 103.252 104.220 Total Moisture Liquid collected, g 276 263.8 275.4 271.733 Volume of Water Vapor, standard cubic feet 12.99 12.42 12.96 12.790 Moisture Content of Stack Gas, % 10.81 10.83 11.15 10.930 Moisture Saturation at Stack Gas Temperature, % 100.00 100.00 100.00 100.000 Dry Mole Fraction 0.8919 0.8917 0.8885 0.891 Carbon Dioxide, % 14.2 14.3 14 14.167 Oxygen, % 4.9 4.8 5.3 5.000 Carbon Monoxide & Nitrogen, % 80.9 80.9 80.7 80.833 Fuel Factor 1.13 1.13 1.11 Dry Molecular Weight, lb/lb-Mole 30.47 30.48 30.45 30.467 Wet Molecular weight, lb/lb-Mole 29.12 29.13 29.06 29.103 Flue Gas Static Pressure, inches of H2O 0.2 0.2 0.2 0.200 Absolute Flue Gas Pressure, inches of Mercury 29.01 28.91 28.72 28.880 Average Stack Gas Temperature, °F 316.92 317.79 318.63 317.780 Average Velocity Head, inches of H2O 0.6683567549 8780.611471246

746083 0.654693638

839104 0.645
Average Stack Gas Velocity, feet/second 56.30 53.97 56.12 55.463 Stack Cross-Sectional Area, square feet 569.026 569.026 569.026 569.026 Dry Volumetric Flow Rate, dry scfm 1,129,670.2 1,077,736.6 1,108,113.11,105,173.3 00 Actual Wet Volumetric Flue Gas Flow Rate, acfm 1,922,169.8 1,842,620.0 1,916,024.31,893,604.7 00 Percent Isokinetic of Sampling Rate, % 102.2 102.2 100.3 101.567 Percent Excess Air, % 29.8 29.0 33.1 30.633 F-Factor, dscfm/MMBtu @ %O2 9780 9780 9780 9,780.000 Round Duct Diameter, inches 323 323 323 Rectangular Duct Width, inches Rectangular Duct Length, inches Fw 10640 10640 1064010,640.000 Fc 1800 1800 1800 1,800.000



### Wednesday, January 19, 2011 Page 14 of 18

### Tanners Creek Unit 4
8/27/2010
Location Stack - Method 29 Average Run Number M29-1 M29-2 M29-3 Test Date 5/25/2010 5/26/2010 5/28/2010 Run Start Time 6:50:00 AM 6:15:00 AM 6:05:00 AM Run Finish Time 11:01:00 AM10:26:00 AM 10:16:00 AM Net Traversing Points 52 52 52 Net Run Time, minutes 240 240 240 Nozzle Diameter, inches 0.232 0.232 0.232 0.232 Pitot Tube Coefficient 0.84 0.84 0.84 0.840 Dry Gas Meter Calibration Factor 1 1 1 1.000 Barometric Pressure, inches of Mercury 29 28.9 28.71 28.870 Average Orifice Meter Differential, inches H2O 0.95 0.97 0.96 0.960 Dry Gas Meter Volume Sampled, cubic feet 147.445 149.126 149.034 148.535 Average Dry Gas Meter Temperature, °F 75.54 76.33 73.22 75.030 Dry Gas Meter Volume Sampled, dscf 141.239 142.155 141.955 141.783 Total Moisture Liquid collected, g 332.2 394.9 375 367.367 Volume of Water Vapor, standard cubic feet 15.64 18.59 17.65 17.293 Moisture Content of Stack Gas, % 9.97 11.56 11.06 10.863 Moisture Saturation at Stack Gas Temperature, % 100.00 100.00 100.00 100.000 Dry Mole Fraction 0.9003 0.8844 0.8894 0.891 Carbon Dioxide, % 14.2 14.3 14 14.167 Oxygen, % 5 4.8 5.2 5.000 Carbon Monoxide & Nitrogen, % 80.8 80.9 80.8 80.833 Fuel Factor 1.12 1.13 1.12 Dry Molecular Weight, lb/lb-Mole 30.47 30.48 30.45 30.467 Wet Molecular weight, lb/lb-Mole 29.23 29.04 29.07 29.113 Flue Gas Static Pressure, inches of H2O 0.2 0.2 0.2 0.200 Absolute Flue Gas Pressure, inches of Mercury 29.01 28.91 28.72 28.880 Average Stack Gas Temperature, °F 312.21 313.46 307.88 311.183 Average Velocity Head, inches of H2O 0.6515827183 532920.671882879

348652 0.655679389

40445 0.660
Average Stack Gas Velocity, feet/second 55.32 56.50 55.77 55.863 Stack Cross-Sectional Area, square feet 569.026 569.026 569.026 569.026 Dry Volumetric Flow Rate, dry scfm 1,127,294.6 1,125,286.5 1,117,749.71,123,443.6 00 Actual Wet Volumetric Flue Gas Flow Rate, acfm 1,888,711.1 1,928,998.1 1,904,074.81,907,261.3 33 Percent Isokinetic of Sampling Rate, % 101.2 102.0 102.6 101.933 Percent Excess Air, % 30.6 29.0 32.2 30.600 F-Factor, dscfm/MMBtu @ %O2 9780 9780 9780 9,780.000 Round Duct Diameter, inches 323 323 323 Rectangular Duct Width, inches Rectangular Duct Length, inches Fw 10640 10640 1064010,640.000 Fc 1800 1800 1800 1,800.000



### Wednesday, January 19, 2011 Page 15 of 18

### Tanners Creek Unit 4
8/27/2010
Location Stack - Method 3A CO2 Average Run Number 1 2 3 Test Date 5/28/2010 5/28/2010 5/28/2010 Run Start Time 2:40:00 PM 5:05:00 PM 7:30:00 PM Run Finish Time 4:39:00 PM 7:04:00 PM 9:29:00 PM Carbon Dioxide, % 14.1 14.1 14.1 14.100 Oxygen, % 5 5 5.1 5.033 Fuel Factor 1.13 1.13 1.12 Dry Volumetric Flow Rate, dry scfm 1104450 1105435 11017291,103,871.3 33 F-Factor, dscfm/MMBtu @ %O2 9780 9780 9780 9,780.000 Moisture, % 11.6 10.8 11.1 11.167 Analyzer Make ServoMex ServoMex ServoMex Analyzer Model 01440D1 01440D1 01440D114,400.000 Analyzer Serial Number 3791 3791 3791 3,791.000 Operating Range 20 20 20 20.000 Operating Units % % % No. Readings/Avg. 120 120 120 120.000 Calibration Set 1 1 1 1.000 Calibration Pre Zero Cylinder ID CC136263- CO2 CC136263-

CO2 CC136263-

CO2 Calibration Pre Zero Cylinder Instrument Response 0.02 0.06 0.06 0.047 Calibration Pre Zero Cylinder Bias 0.1 0.3 0.3 0.233 Calibration Pre Zero Cylinder Drift 0 0 0 0.000 Calibration Pre High Cylinder ID CC114878- CO2 CC114878-

CO2 CC114878-

CO2 Calibration Pre High Cylinder Instrument Response 9.87 9.79 9.8 9.820 Calibration Pre High Cylinder Bias -48.15 -0.3 -0.25 -16.233 Calibration Pre High Cylinder Drift 0 0 0 0.000 Calibration Post Zero Cylinder ID CC136263- CO2 CC136263-

CO2 CC136263-

CO2 Calibration Post Zero Cylinder Instrument Response 0.06 0.06 0.06 0.060 Calibration Post Zero Cylinder Bias 0.3 0.3 0.3 0.300 Calibration Post Zero Cylinder Drift 0.2 0 0 0.067 Calibration Post High Cylinder ID CC114878- CO2 CC114878-

CO2 CC114878-

CO2 Calibration Post High Cylinder Instrument Response 9.79 9.8 9.81 9.800 Calibration Post High Cylinder Bias -48.55 -0.25 -0.2 -16.333 Calibration Post High Cylinder Drift 0.3999999999 99999 0.05 0.05 0.167
Cavg 14.1 14.1 14.1 14.100 Cavg Units %vd %vd %vd Cgas 14.1131 14.1727 14.1581 14.148 Cgas Units %vd %vd %vd Fuel Type Coal - Bituminous Coal -

Bituminous Coal -

Bituminous Fw 10640 10640 1064010,640.000 Fc 1800 1800 1800 1,800.000 Cgasw 0 0 0 0.000 Cgasw Units



### Wednesday, January 19, 2011 Page 16 of 18

### Tanners Creek Unit 4
8/27/2010
Location Stack - Method 3A O2 Average Run Number 1 2 3 Test Date 5/28/2010 5/28/2010 5/28/2010 Run Start Time 2:40:00 PM 5:05:00 PM 7:30:00 PM Run Finish Time 4:39:00 PM 7:04:00 PM 9:29:00 PM Carbon Dioxide, % 14.1 14.1 14.1 14.100 Oxygen, % 5 5 5.1 5.033 Fuel Factor 1.13 1.13 1.12 Dry Volumetric Flow Rate, dry scfm 1104450 1105435 11017291,103,871.3 33 F-Factor, dscfm/MMBtu @ %O2 9780 9780 9780 9,780.000 Moisture, % 11.6 10.8 11.1 11.167 Analyzer Make ServoMex ServoMex ServoMex Analyzer Model 01440D1 01440D1 01440D114,400.000 Analyzer Serial Number 3791 3791 3791 3,791.000 Operating Range 25 25 25 25.000 Operating Units % % % No. Readings/Avg. 120 120 120 120.000 Calibration Set 2 2 2 2.000 Calibration Pre Zero Cylinder ID CC40376-O2CC40376-O2CC40376-O2 Calibration Pre Zero Cylinder Instrument Response 0.02 0.05 0.06 0.043 Calibration Pre Zero Cylinder Bias 0.08 0.2 0.24 0.173 Calibration Pre Zero Cylinder Drift 0 0 0 0.000 Calibration Pre High Cylinder ID CC114878-O2 CC114878- O2 CC114878-

O2 Calibration Pre High Cylinder Instrument Response 11.97 12.12 12 12.030 Calibration Pre High Cylinder Bias 0.04 0.64 0.16 0.280 Calibration Pre High Cylinder Drift 0 0 0 0.000 Calibration Post Zero Cylinder ID CC40376-O2CC40376-O2CC40376-O2 Calibration Post Zero Cylinder Instrument Response 0.05 0.06 0.05 0.053 Calibration Post Zero Cylinder Bias 0.2 0.24 0.2 0.213 Calibration Post Zero Cylinder Drift 0.12 0.04 0.04 0.067 Calibration Post High Cylinder ID CC114878-O2 CC114878- O2 CC114878-

O2 Calibration Post High Cylinder Instrument Response 12.12 12 12.01 12.043 Calibration Post High Cylinder Bias 0.64 0.16 0.2 0.333 Calibration Post High Cylinder Drift 0.6 0.48 0.04 0.373 Cavg 5 5 5.1 5.033 Cavg Units %vd %vd %vd Cgas 4.9567 4.9388 5.0619 4.986 Cgas Units %vd %vd %vd Fuel Type Coal - Bituminous Coal -

Bituminous Coal -

Bituminous Fw 10640 10640 1064010,640.000 Fc 1800 1800 1800 1,800.000 Cgasw 0 0 0 0.000 Cgasw Units



### Wednesday, January 19, 2011 Page 17 of 18

### Tanners Creek Unit 4
8/27/2010
Location Stack - OTM - 27/28 Average Run Number MOTM27/OT M28-1MOTM27/O

TM28-2MOTM27/OT

M28-3 Test Date 5/25/2010 5/26/2010 5/28/2010 Run Start Time 6:50:00 AM 6:00:00 AM 5:50:00 AM Run Finish Time 1:06:00 PM12:15:00 PM 12:05:00 PM Net Traversing Points 76 76 76 Net Run Time, minutes 360 360 360 Nozzle Diameter, inches 0.188 0.188 0.188 0.188 Pitot Tube Coefficient 0.84 0.84 0.84 0.840 Dry Gas Meter Calibration Factor 1.014 1.014 1.014 1.014 Barometric Pressure, inches of Mercury 28.7 28.9 28.71 28.770 Average Orifice Meter Differential, inches H2O 0.35 0.40 0.40 0.383 Dry Gas Meter Volume Sampled, cubic feet 132.445 140.787 141.409 138.214 Average Dry Gas Meter Temperature, °F 86.72 78.13 68.31 77.720 Dry Gas Meter Volume Sampled, dscf 124.524 135.433 137.650 132.536 Total Moisture Liquid collected, g 371.5 328.8 272.2 324.167 Volume of Water Vapor, standard cubic feet 17.49 15.48 12.81 15.260 Moisture Content of Stack Gas, % 12.32 10.26 8.51 10.363 Moisture Saturation at Stack Gas Temperature, % 100.00 100.00 100.00 100.000 Dry Mole Fraction 0.8768 0.8974 0.9149 0.896 Carbon Dioxide, % 14.4 14.3 14 14.233 Oxygen, % 4.9 4.8 5.3 5.000 Carbon Monoxide & Nitrogen, % 80.7 80.9 80.7 80.767 Fuel Factor 1.11 1.13 1.11 Dry Molecular Weight, lb/lb-Mole 30.50 30.48 30.45 30.477 Wet Molecular weight, lb/lb-Mole 28.96 29.20 29.39 29.183 Flue Gas Static Pressure, inches of H2O 0 0 0.5 0.167 Absolute Flue Gas Pressure, inches of Mercury 28.70 28.90 28.75 28.783 Average Stack Gas Temperature, °F 310.24 310.61 308.85 309.900 Average Velocity Head, inches of H2O 0.6939039807 332210.689557148

581379 0.687716847

187366 0.690
Average Stack Gas Velocity, feet/second 57.59 56.98 56.81 57.127 Stack Cross-Sectional Area, square feet 569.026 569.026 569.026 569.026 Dry Volumetric Flow Rate, dry scfm 1,133,598.2 1,155,386.8 1,170,982.31,153,322.4 33 Actual Wet Volumetric Flue Gas Flow Rate, acfm 1,966,212.4 1,945,386.1 1,939,582.01,950,393.5 00 Percent Isokinetic of Sampling Rate, % 90.1 96.1 96.4 94.200 Percent Excess Air, % 29.9 29.0 33.1 30.667 F-Factor, dscfm/MMBtu @ %O2 9780 9780 9780 9,780.000 Round Duct Diameter, inches 323 323 323 Rectangular Duct Width, inches Rectangular Duct Length, inches Fw 10640 10640 1064010,640.000 Fc 1800 1800 1800 1,800.000



### Wednesday, January 19, 2011 Page 18 of 18