### Name: Jason McLaurin

Title: Environmental Coordinator Company: Southern Illinois Power Sign Date: 8/30/2010 Name: Chet Gutwein Title: Engineer Company: Airtech Environmental Services Inc. Sign Date: 8/30/2010 Permitted Facility Representative / Date Testing Company Representative / Date 

## Marion Generating Station Boiler 123

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.

Thursday, February 03, 2011 Page 1 of 24

### Marion Generating Station Boiler 123

8/30/2010 Facility Information: Marion Generating Station
11543 LAKE OF EGYPT ROAD

Marion IL 62959 Contact: Jason McLaurin
Phone: (618) 964-1448
Fax: (618) 964-1867
Email: jmclaurin@sipower.org Testing Company:
Airtech Environmental Services Inc. 601A Country Club Drive

Bensenville IL 60106 Contact: Jim Christ
Phone: (630) 860-4740
Fax: (630) 860-4745
Email: jchrist@airtechenv.com

Air Permit Number: 976 Permitted Source ID/Name: B123
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: Industry/SCC/NAIS 221112

Sampling Location Information:

Test Parameter Information: AFS #: 1719900020 FRS #: 110017420049

SCC / Description 10100202 External Combustion Boilers - Electric Generation - Bituminous/Subbituminous Coal - Pulverized Coal: Dry Bottom (Bituminous 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 Exit 114 9.17 5.26 4 114 12 0 0

Target Parameter Test Method Number of

Test Runs Test Run

Duration Sample

Points Comments Location
% H2O Method 1 - 4 3 120 0 Stack Exit Carbon Monoxide Method 10 3 120 0 Stack Exit Total organic compounds

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

Chlorine Method 26A 3 180 0 Stack Exit Hydrogen Chloride Method 26A 3 180 0 Stack Exit Hydrogen Fluoride Method 26A 3 180 0 Stack Exit Filterable PM2.5 OTM - 27/28 3 240 0 Stack Exit


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8/30/2010

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. The following is a list of the test methods that are to be used for this test program and their respective promulgation dates:
Methods 1 through 29 – August 1997 Other Test Methods 27 and 28 – April 2009

Total PM2.5 OTM - 27/28 3 240 0 Stack Exit Inorganic (Aqueous)

Condensible Part. OTM - 27/28 3 240 0 Stack Exit

Organic Condensible

Particulate OTM - 27/28 3 240 0 Stack Exit

Chromium Method 29 3 240 0 Stack Exit Lead Method 29 3 240 0 Stack Exit Nickel Method 29 3 240 0 Stack Exit Antimony Method 29 3 240 0 Stack Exit Cobalt Method 29 3 240 0 Stack Exit Cadmium Method 29 3 240 0 Stack Exit Beryllium Method 29 3 240 0 Stack Exit Arsenic Method 29 3 240 0 Stack Exit Selenium Method 29 3 240 0 Stack Exit Manganese Method 29 3 240 0 Stack Exit Sulfur Dioxide Method 6C 3 120 0 Stack Exit Nitrogen oxides (NOx) Method 7E 3 180 0 Stack Exit



### Thursday, February 03, 2011 Page 3 of 24

### Marion Generating Station Boiler 123

8/30/2010 Sampling / Stack Data Results Summary



### Location Stack Exit - Method 1 - 4 Average
Run Number 1 2 3
Test Date 6/9/2010 6/10/2010 6/11/2010
Run Start Time 1:45:00 PM 6:04:00 AM 5:49:00 AM

Run Finish Time 4:05:00 PM 8:27:00 AM 8:03:00 AM

Net Run Time, minutes 210 120 120 Dry Gas Meter Volume Sampled, dscf 83.811 74.116 75.388 77.772 Moisture Content of Stack Gas, % 6.70 7.55 7.13 7.127 Moisture Saturation at Stack Gas Temperature, % 100.00 100.00 100.00 100.000 Carbon Dioxide, % 14.3 14.9 14.7 14.633 Oxygen, % 5.15 4.79 5.15 5.030 Average Stack Gas Temperature, °F 344.67 342.75 334.83 340.750 Dry Volumetric Flow Rate, dry scfm 303,907.1 292,498.1 296,294.1 297,566.433 Actual Wet Volumetric Flue Gas Flow Rate, acfm 496,911.2 480,537.4 480,112.1 485,853.567 Percent Isokinetic of Sampling Rate, % 59.1 97.2 101.2 85.833 F-Factor, dscfm/MMBtu @ %O2 10348 10382 10009 10,246.333
Fw 0 0 0 0.000
Fc 0 0 0 0.000



### Location Stack Exit - Method 10 Average Run Number
Test Date
Run Start Time
Run Finish Time Carbon Dioxide, % Oxygen, % Dry Volumetric Flow Rate, dry scfm F-Factor, dscfm/MMBtu @ %O2 Moisture, % Fuel Type
Fw
Fc



### Thursday, February 03, 2011 Page 4 of 24

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8/30/2010
Location Stack Exit - Method 25A Average Run Number
Test Date
Run Start Time
Run Finish Time Carbon Dioxide, % Oxygen, % Dry Volumetric Flow Rate, dry scfm F-Factor, dscfm/MMBtu @ %O2 Moisture, % Fuel Type
Fw
Fc



### Location Stack Exit - Method 26A Average Run Number
Test Date
Run Start Time
Run Finish Time Net Run Time, minutes Dry Gas Meter Volume Sampled, dscf Moisture Content of Stack Gas, % Moisture Saturation at Stack Gas Temperature, % Carbon Dioxide, % Oxygen, % 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
Fw
Fc



### Thursday, February 03, 2011 Page 5 of 24

### Marion Generating Station Boiler 123

8/30/2010
Location Stack Exit - Method 29 Average Run Number
Test Date
Run Start Time
Run Finish Time Net Run Time, minutes Dry Gas Meter Volume Sampled, dscf Moisture Content of Stack Gas, % Moisture Saturation at Stack Gas Temperature, % Carbon Dioxide, % Oxygen, % 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
Fw
Fc



### Location Stack Exit - Method 6C Average Run Number
Test Date
Run Start Time
Run Finish Time Carbon Dioxide, % Oxygen, % Dry Volumetric Flow Rate, dry scfm F-Factor, dscfm/MMBtu @ %O2 Moisture, % Fuel Type
Fw
Fc



### Thursday, February 03, 2011 Page 6 of 24

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8/30/2010
Location Stack Exit - Method 6C 3 Average Run Number
Test Date
Run Start Time
Run Finish Time Carbon Dioxide, % Oxygen, % Dry Volumetric Flow Rate, dry scfm F-Factor, dscfm/MMBtu @ %O2 Moisture, % Fuel Type
Fw
Fc



### Location Stack Exit - Method 7E Average Run Number
Test Date
Run Start Time
Run Finish Time Carbon Dioxide, % Oxygen, % Dry Volumetric Flow Rate, dry scfm F-Factor, dscfm/MMBtu @ %O2 Moisture, % Fuel Type
Fw
Fc



### Thursday, February 03, 2011 Page 7 of 24

### Marion Generating Station Boiler 123

8/30/2010
Location Stack Exit - OTM - 27/28 Average Run Number
Test Date
Run Start Time
Run Finish Time Net Run Time, minutes Dry Gas Meter Volume Sampled, dscf Moisture Content of Stack Gas, % Moisture Saturation at Stack Gas Temperature, % Carbon Dioxide, % Oxygen, % 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
Fw
Fc



### Thursday, February 03, 2011 Page 8 of 24

### Marion Generating Station Boiler 123

8/30/2010 Emissions Summary



### Location: Stack Exit - Method 1 - 4 Compound: % H2O Average RunNumber 1 2 3 Mass_mg 128000 128600 123000 126,533.333



### Location: Stack Exit - Method 10 

### Compound: Carbon Monoxide Average Run 1 2 3 Elb/hr 8.29E+01 7.56E+01 7.67E+02 308.500 lb/mmBtuO2 6.25E-02 5.80E-02 5.73E-02 0.059 ppm 6.26E+01 5.93E+01 5.93E+01 60.400 ppm@7%O2 5.52E+01 5.12E+01 5.23E+01 52.900



### Location: Stack Exit - Method 25A Compound: Total organic compounds (TOC) as Average Run 1 2 3 Elb/hr 1.41E+00 1.09E+00 1.10E+00 1.200 lb/mmBtuO2 1.03E-03 8.36E-04 8.20E-04 0.001 ppm 7.02E-01 5.42E-01 5.39E-01 0.594 ppm@7%O2 6.06E-01 4.68E-01 4.76E-01 0.517



### Location: Stack Exit - Method 26A Compound: Chlorine Average RunNumber 1 2 3 Mass_mg 89.872 64.974 77.184 77.343 lb/mmBtuO2 2.32E-02 1.79E-02 1.96E-02 0.020 mg/dscm 2.71E+01 2.12E+01 2.37E+01 24.000 mg/dscm@7%O2 2.39E+01 1.83E+01 2.09E+01 21.033 ppm 9.20E+00 7.21E+00 8.02E+00 8.143 ppm@7%O2 8.10E+00 6.22E+00 7.06E+00 7.127


### Compound: Hydrogen Chloride Average RunNumber 1 2 3 Mass_mg 92.7 66.6 79.4 79.567 lb/mmBtuO2 2.39E-02 1.83E-02 2.01E-02 0.021 mg/dscm 2.80E+01 2.18E+01 2.43E+01 24.700 mg/dscm@7%O2 2.47E+01 1.88E+01 2.14E+01 21.633 ppm 1.85E+01 1.44E+01 1.61E+01 16.333 ppm@7%O2 1.63E+01 1.24E+01 1.42E+01 14.300


### Compound: Hydrogen Fluoride Average RunNumber 1 2 3 Mass_mg 0.376 0.374 0.368 0.373 lb/mmBtuO2 9.71E-05 1.03E-04 9.33E-05 0.000


### Thursday, February 03, 2011 Page 9 of 24

### Marion Generating Station Boiler 123

8/30/2010 mg/dscm 1.14E-01 1.22E-01 1.13E-01 0.116 mg/dscm@7%O2 1.00E-01 1.05E-01 9.95E-02 0.102 ppm 1.36E-01 1.47E-01 1.36E-01 0.140 ppm@7%O2 1.20E-01 1.27E-01 1.20E-01 0.122



### Location: Stack Exit - Method 29 

### Compound: Antimony Average RunNumber 1 2 3 Mass_mg 0.000798 0.000783 0.001197 0.001 lb/mmBtuO2 1.41E-07 1.53E-07 2.43E-07 0.000 mg/dscm 1.78E-04 1.80E-04 2.84E-04 0.000 mg/dscm@7%O2 1.53E-04 1.57E-04 2.50E-04 0.000 ppm 3.51E-05 3.56E-05 5.62E-05 0.000 ppm@7%O2 3.01E-05 3.11E-05 4.94E-05 0.000


### Compound: Arsenic Average RunNumber 1 2 3 Mass_mg 0.004893 0.008843 0.010473 0.008 lb/mmBtuO2 8.64E-07 1.73E-06 2.13E-06 0.000 mg/dscm 1.09E-03 2.04E-03 2.49E-03 0.002 mg/dscm@7%O2 9.34E-04 1.78E-03 2.19E-03 0.002 ppm 3.50E-04 6.54E-04 7.99E-04 0.001 ppm@7%O2 3.00E-04 5.71E-04 7.02E-04 0.001


### Compound: Beryllium Average RunNumber 1 2 3 Mass_mg 0.000733 0.00104 0.00233 0.001 lb/mmBtuO2 1.29E-07 2.03E-07 4.74E-07 0.000 mg/dscm 1.63E-04 2.40E-04 5.54E-04 0.000 mg/dscm@7%O2 1.40E-04 2.10E-04 4.87E-04 0.000 ppm 4.36E-04 6.39E-04 1.48E-03 0.001 ppm@7%O2 3.74E-04 5.58E-04 1.30E-03 0.001


### Compound: Cadmium Average RunNumber 1 2 3 Mass_mg 0.002535 0.001705 0.002445 0.002 lb/mmBtuO2 4.47E-07 3.33E-07 4.97E-07 0.000 mg/dscm 5.64E-04 3.93E-04 5.81E-04 0.001 mg/dscm@7%O2 4.83E-04 3.43E-04 5.10E-04 0.000 ppm 1.21E-04 8.40E-05 1.24E-04 0.000 ppm@7%O2 1.04E-04 7.34E-05 1.09E-04 0.000


### Compound: Chromium Average RunNumber 1 2 3 Mass_mg 0.01757 0.02357 0.03507 0.025 lb/mmBtuO2 3.10E-06 4.61E-06 7.13E-06 0.000 mg/dscm 3.91E-03 5.43E-03 8.33E-03 0.006 mg/dscm@7%O2 3.35E-03 4.74E-03 7.32E-03 0.005



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8/30/2010

ppm 1.81E-03 2.51E-03 3.85E-03 0.003 ppm@7%O2 1.55E-03 2.19E-03 3.38E-03 0.002


### Compound: Cobalt Average RunNumber 1 2 3 Mass_mg 0.003418 0.005538 0.008608 0.006 lb/mmBtuO2 6.03E-07 1.08E-06 1.75E-06 0.000 mg/dscm 7.61E-04 1.28E-03 2.05E-03 0.001 mg/dscm@7%O2 6.52E-04 1.12E-03 1.80E-03 0.001 ppm 3.11E-04 5.21E-04 8.35E-04 0.001 ppm@7%O2 2.67E-04 4.55E-04 7.34E-04 0.000


### Compound: Lead Average RunNumber 1 2 3 Mass_mg 0.020503 0.030603 0.0316 0.028 lb/mmBtuO2 3.62E-06 5.98E-06 6.43E-06 0.000 mg/dscm 4.56E-03 7.05E-03 7.51E-03 0.006 mg/dscm@7%O2 3.91E-03 6.16E-03 6.60E-03 0.006 ppm 5.30E-04 8.18E-04 8.71E-04 0.001 ppm@7%O2 4.54E-04 7.15E-04 7.65E-04 0.001


### Compound: Manganese Average RunNumber 1 2 3 Mass_mg 0.05982 0.09922 0.17122 0.110 lb/mmBtuO2 1.06E-05 1.94E-05 3.48E-05 0.000 mg/dscm 1.33E-02 2.29E-02 4.07E-02 0.026 mg/dscm@7%O2 1.14E-02 2.00E-02 3.58E-02 0.022 ppm 5.83E-03 1.00E-02 1.78E-02 0.011 ppm@7%O2 5.00E-03 8.74E-03 1.56E-02 0.010


### Compound: Nickel Average RunNumber 1 2 3 Mass_mg 0.01075 0.01675 0.02855 0.019 lb/mmBtuO2 1.90E-06 3.27E-06 5.81E-06 0.000 mg/dscm 2.39E-03 3.86E-03 6.78E-03 0.004 mg/dscm@7%O2 2.05E-03 3.37E-03 5.96E-03 0.004 ppm 9.80E-04 1.58E-03 2.78E-03 0.002 ppm@7%O2 8.40E-04 1.38E-03 2.44E-03 0.002


### Compound: Selenium Average RunNumber 1 2 3 Mass_mg 0.00221 0.00283 0.00545 0.003 lb/mmBtuO2 3.90E-07 5.53E-07 1.11E-06 0.000 mg/dscm 4.92E-04 6.52E-04 1.29E-03 0.001 mg/dscm@7%O2 4.22E-04 5.70E-04 1.13E-03 0.001 ppm 1.50E-04 1.99E-04 3.94E-04 0.000 ppm@7%O2 1.29E-04 1.74E-04 3.46E-04 0.000



### Location: Stack Exit - Method 6C



### Thursday, February 03, 2011 Page 11 of 24

### Marion Generating Station Boiler 123

8/30/2010 Compound: Sulfur Dioxide Average Run 1 2 3 Elb/hr 5.51E+02 6.88E+02 6.70E+02 636.333 lb/mmBtuO2 4.15E-01 5.28E-01 5.01E-01 0.481 ppm 1.82E+02 2.36E+02 2.27E+02 215.000 ppm@7%O2 1.61E+02 2.04E+02 2.00E+02 188.333



### Location: Stack Exit - Method 6C 3 

### Compound: Sulfur Dioxide Average Run 4 5 6 Elb/hr 5.41E+02 6.70E+02 6.79E+02 630.000 lb/mmBtuO2 4.07E-01 5.15E-01 5.07E-01 0.476 ppm 1.79E+02 2.30E+02 2.30E+02 213.000 ppm@7%O2 1.58E+02 1.98E+02 2.03E+02 186.333



### Location: Stack Exit - Method 7E 

### Compound: Nitrogen oxides (NOx) Average Run 1 2 3 Elb/hr 1.25E+02 1.35E+02 1.21E+02 127.000 lb/mmBtuO2 9.43E-02 1.04E-01 9.00E-02 0.096 ppm 5.75E+01 6.46E+01 5.69E+01 59.667 ppm@7%O2 5.07E+01 5.58E+01 5.01E+01 52.200



### Location: Stack Exit - OTM - 27/28 Compound: Filterable PM2.5 Average RunNumber 1 2 3 Mass_mg 28.7 19.9 16.2 21.600 Elb/hr 9.16E+00 6.45E+00 5.45E+00 7.020 lb/mmBtuO2 6.27E-03 4.72E-03 4.00E-03 0.005 mg/dscm 7.90E+00 5.57E+00 4.68E+00 6.050 mg/dscm@7%O2 6.77E+00 4.86E+00 4.10E+00 5.243


### Compound: Inorganic (Aqueous) Condensible Pa Average RunNumber 1 2 3 Mass_mg 14.8 12.5 15.9 14.400 Elb/hr 4.72E+00 4.05E+00 5.35E+00 4.707 lb/mmBtuO2 3.23E-03 2.97E-03 3.93E-03 0.003 mg/dscm 4.07E+00 3.50E+00 4.60E+00 4.057 mg/dscm@7%O2 3.49E+00 3.06E+00 4.03E+00 3.527


### Compound: Organic Condensible Particulate Average RunNumber 1 2 3 Mass_mg 44 87.2 101.1 77.433 Elb/hr 1.40E+01 2.83E+01 3.40E+01 25.433 lb/mmBtuO2 9.61E-03 2.07E-02 2.50E-02 0.018 mg/dscm 1.21E+01 2.44E+01 2.92E+01 21.900


### Thursday, February 03, 2011 Page 12 of 24

### Marion Generating Station Boiler 123

8/30/2010

Process Run Data mg/dscm@7%O2 1.04E+01 2.13E+01 2.56E+01 19.100


### Compound: Total PM2.5 Average RunNumber 1 2 3 Mass_mg 87.6 119.6 133.2 113.467 Elb/hr 2.80E+01 3.88E+01 4.48E+01 37.200 lb/mmBtuO2 1.91E-02 2.84E-02 3.29E-02 0.027 mg/dscm 2.41E+01 3.35E+01 3.85E+01 32.033 mg/dscm@7%O2 2.07E+01 2.92E+01 3.37E+01 27.867



### Thursday, February 03, 2011 Page 13 of 24

### Marion Generating Station Boiler 123

8/30/2010 Process Run Data

APCD Run Data 

### Run Name Value UOM Comments Target Value 1 Coal Firing Rate 1638 tons/day 1700


### 2 Coal Firing Rate 1772 tons/day 1700
3 Coal Firing Rate 1753 tons/day 1700
4 Coal Firing Rate 1683 tons/day 1700


### 1 Average Heat Input 1246 MMBtu/hr 1250
2 Average Heat Input 1262.8 MMBtu/hr 1250
3 Average Heat Input 1276 MMBtu/hr 1250


### 4 Average Heat Input 1279.5 MMBtu/hr 1250
1 Steam Output 994 1000 lb steam/hr 1000
2 Steam Output 992 1000 lb steam/hr 1000


### 3 Steam Output 991 1000 lb steam/hr 1000
4 Steam Output 991 1000 lb steam/hr 1000
1 Flue Gas Flow Rate 2E+07 dscfm 2E+07


### 2 Flue Gas Flow Rate 2E+07 dscfm 2E+07
3 Flue Gas Flow Rate 2E+07 dscfm 2E+07
4 Flue Gas Flow Rate 2E+07 dscfm 2E+07


### 1 Flue Gas Oxygen Content 5.2 % 5
2 Flue Gas Oxygen Content 5.1 % 5
3 Flue Gas Oxygen Content 4.9 % 5


### 4 Flue Gas Oxygen Content 5.1 % 5
1 Flue Gas Carbon Dioxide Content 14.1 % 14.5
2 Flue Gas Carbon Dioxide Content 14.3 % 14.5


### 3 Flue Gas Carbon Dioxide Content 14.5 % 14.5
4 Flue Gas Carbon Dioxide Content 14.3 % 14.5


### 1 Flue Gas Sampling Point Temperature 229.6 Deg F 230
2 Flue Gas Sampling Point Temperature 228.6 Deg F 230
3 Flue Gas Sampling Point Temperature 230.5 Deg F 230


### 4 Flue Gas Sampling Point Temperature 230.4 Deg F 230
1 Unit Gross Electrical Output 229.6 MW 105
2 Unit Gross Electrical Output 105 MW 105


### 3 Unit Gross Electrical Output 105 MW 105
4 Unit Gross Electrical Output 105 MW 105

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8/30/2010

Process Lab Run Data Run Name Value UOM Comments Target Value 

### 1 NSCR (NON-SELECTIVE CATALYTIC REDUCTION) 0 0

1 SCRUBBER 0 0


### 1 Limestone Injection 0 0

Run Name Value UOM Comments 1 See 4b Comments. 0



### Thursday, February 03, 2011 Page 15 of 24

### Marion Generating Station Boiler 123

8/30/2010 Sampling / Stack Data Results Detail



### Location Stack Exit - Method 1 - 4 Average Run Number 1 2 3 Test Date 6/9/2010 6/10/2010 6/11/2010 Run Start Time 1:45:00 PM 6:04:00 AM 5:49:00 AM Run Finish Time 4:05:00 PM 8:27:00 AM 8:03:00 AM Net Traversing Points 12 12 12 Net Run Time, minutes 210 120 120 Nozzle Diameter, inches 0.17 0.168 0.165 0.168 Pitot Tube Coefficient 0.84 0.84 0.84 0.840 Dry Gas Meter Calibration Factor 0.9944 0.9944 0.9963 0.995 Barometric Pressure, inches of Mercury 29.93 29.99 29.97 29.963 Average Orifice Meter Differential, inches H2O 1.54 1.36 1.42 1.440 Dry Gas Meter Volume Sampled, cubic feet 90.880 79.570 77.330 82.593 Average Dry Gas Meter Temperature, °F 111.67 106.88 82.38 100.310 Dry Gas Meter Volume Sampled, dscf 83.811 74.116 75.388 77.772 Total Moisture Liquid collected, g 128 128.6 123 126.533 Volume of Water Vapor, standard cubic feet 6.02 6.05 5.79 5.953 Moisture Content of Stack Gas, % 6.70 7.55 7.13 7.127 Moisture Saturation at Stack Gas Temperature, % 100.00 100.00 100.00 100.000 Dry Mole Fraction 0.933 0.9245 0.9287 0.929 Carbon Dioxide, % 14.3 14.9 14.7 14.633 Oxygen, % 5.15 4.79 5.15 5.030 Carbon Monoxide & Nitrogen, % 80.55 80.31 80.15 80.337 Fuel Factor 1.10 1.08 1.07 Dry Molecular Weight, lb/lb-Mole 30.49 30.58 30.56 30.543 Wet Molecular weight, lb/lb-Mole 29.65 29.63 29.66 29.647 Flue Gas Static Pressure, inches of H2O -0.6 -0.6 -0.6 -0.600 Absolute Flue Gas Pressure, inches of Mercury 29.89 29.95 29.93 29.923 Average Stack Gas Temperature, °F 344.67 342.75 334.83 340.750 Average Velocity Head, inches of H2O 2.9154681803 2002 2.736835877

30999 2.760121117

24337 2.804

Average Stack Gas Velocity, feet/second 116.84 112.99 112.89 114.240 Stack Cross-Sectional Area, square feet 70.882 70.882 70.882 70.882 Dry Volumetric Flow Rate, dry scfm 303,907.1 292,498.1 296,294.1 297,566.433 Actual Wet Volumetric Flue Gas Flow Rate, acfm 496,911.2 480,537.4 480,112.1 485,853.567 Percent Isokinetic of Sampling Rate, % 59.1 97.2 101.2 85.833 Percent Excess Air, % 32.0 29.2 32.2 31.133 F-Factor, dscfm/MMBtu @ %O2 10348 10382 10009 10,246.333 Round Duct Diameter, inches 114 114 114 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



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8/30/2010
Location Stack Exit - Method 10 Average Run Number Test Date Run Start Time Run Finish Time Carbon Dioxide, % Oxygen, % Fuel Factor Dry Volumetric Flow Rate, dry scfm F-Factor, dscfm/MMBtu @ %O2 Moisture, % Analyzer Make Analyzer Model Analyzer Serial Number Operating Range Operating Units No. Readings/Avg. Calibration Set Calibration Pre Zero Cylinder ID Calibration Pre Zero Cylinder Instrument Response Calibration Pre Zero Cylinder Bias Calibration Pre Zero Cylinder Drift Calibration Pre High Cylinder ID Calibration Pre High Cylinder Instrument Response Calibration Pre High Cylinder Bias Calibration Pre High Cylinder Drift Calibration Post Zero Cylinder ID Calibration Post Zero Cylinder Instrument Response Calibration Post Zero Cylinder Bias Calibration Post Zero Cylinder Drift Calibration Post High Cylinder ID Calibration Post High Cylinder Instrument Response Calibration Post High Cylinder Bias Calibration Post High Cylinder Drift Cavg Cavg Units Cgas Cgas Units Fuel Type Fw Fc Cgasw Cgasw Units



### Thursday, February 03, 2011 Page 17 of 24

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8/30/2010
Location Stack Exit - Method 25A Average Run Number Test Date Run Start Time Run Finish Time Carbon Dioxide, % Oxygen, % Fuel Factor Dry Volumetric Flow Rate, dry scfm F-Factor, dscfm/MMBtu @ %O2 Moisture, % Analyzer Make Analyzer Model Analyzer Serial Number Operating Range Operating Units No. Readings/Avg. Calibration Set Calibration Pre Zero Cylinder ID Calibration Pre Zero Cylinder Instrument Response Calibration Pre Zero Cylinder Bias Calibration Pre Zero Cylinder Drift Calibration Pre High Cylinder ID Calibration Pre High Cylinder Instrument Response Calibration Pre High Cylinder Bias Calibration Pre High Cylinder Drift Calibration Post Zero Cylinder ID Calibration Post Zero Cylinder Instrument Response Calibration Post Zero Cylinder Bias Calibration Post Zero Cylinder Drift Calibration Post High Cylinder ID Calibration Post High Cylinder Instrument Response Calibration Post High Cylinder Bias Calibration Post High Cylinder Drift Cavg Cavg Units Cgas Cgas Units Fuel Type Fw Fc Cgasw Cgasw Units



### Thursday, February 03, 2011 Page 18 of 24

### Marion Generating Station Boiler 123

8/30/2010
Location Stack Exit - Method 26A Average Run Number Test Date Run Start Time Run Finish Time Net Traversing Points Net Run Time, minutes Nozzle Diameter, inches Pitot Tube Coefficient Dry Gas Meter Calibration Factor Barometric Pressure, inches of Mercury Average Orifice Meter Differential, inches H2O Dry Gas Meter Volume Sampled, cubic feet Average Dry Gas Meter Temperature, °F Dry Gas Meter Volume Sampled, dscf Total Moisture Liquid collected, g Volume of Water Vapor, standard cubic feet Moisture Content of Stack Gas, % Moisture Saturation at Stack Gas Temperature, % Dry Mole Fraction Carbon Dioxide, % Oxygen, % Carbon Monoxide & Nitrogen, % Fuel Factor Dry Molecular Weight, lb/lb-Mole Wet Molecular weight, lb/lb-Mole Flue Gas Static Pressure, inches of H2O Absolute Flue Gas Pressure, inches of Mercury Average Stack Gas Temperature, °F Average Velocity Head, inches of H2O Average Stack Gas Velocity, feet/second Stack Cross-Sectional Area, square feet Dry Volumetric Flow Rate, dry scfm Actual Wet Volumetric Flue Gas Flow Rate, acfm Percent Isokinetic of Sampling Rate, % Percent Excess Air, % F-Factor, dscfm/MMBtu @ %O2 Round Duct Diameter, inches Rectangular Duct Width, inches Rectangular Duct Length, inches Fw Fc



### Thursday, February 03, 2011 Page 19 of 24

### Marion Generating Station Boiler 123

8/30/2010
Location Stack Exit - Method 29 Average Run Number Test Date Run Start Time Run Finish Time Net Traversing Points Net Run Time, minutes Nozzle Diameter, inches Pitot Tube Coefficient Dry Gas Meter Calibration Factor Barometric Pressure, inches of Mercury Average Orifice Meter Differential, inches H2O Dry Gas Meter Volume Sampled, cubic feet Average Dry Gas Meter Temperature, °F Dry Gas Meter Volume Sampled, dscf Total Moisture Liquid collected, g Volume of Water Vapor, standard cubic feet Moisture Content of Stack Gas, % Moisture Saturation at Stack Gas Temperature, % Dry Mole Fraction Carbon Dioxide, % Oxygen, % Carbon Monoxide & Nitrogen, % Fuel Factor Dry Molecular Weight, lb/lb-Mole Wet Molecular weight, lb/lb-Mole Flue Gas Static Pressure, inches of H2O Absolute Flue Gas Pressure, inches of Mercury Average Stack Gas Temperature, °F Average Velocity Head, inches of H2O Average Stack Gas Velocity, feet/second Stack Cross-Sectional Area, square feet Dry Volumetric Flow Rate, dry scfm Actual Wet Volumetric Flue Gas Flow Rate, acfm Percent Isokinetic of Sampling Rate, % Percent Excess Air, % F-Factor, dscfm/MMBtu @ %O2 Round Duct Diameter, inches Rectangular Duct Width, inches Rectangular Duct Length, inches Fw Fc



### Thursday, February 03, 2011 Page 20 of 24

### Marion Generating Station Boiler 123

8/30/2010
Location Stack Exit - Method 6C Average Run Number Test Date Run Start Time Run Finish Time Carbon Dioxide, % Oxygen, % Fuel Factor Dry Volumetric Flow Rate, dry scfm F-Factor, dscfm/MMBtu @ %O2 Moisture, % Analyzer Make Analyzer Model Analyzer Serial Number Operating Range Operating Units No. Readings/Avg. Calibration Set Calibration Pre Zero Cylinder ID Calibration Pre Zero Cylinder Instrument Response Calibration Pre Zero Cylinder Bias Calibration Pre Zero Cylinder Drift Calibration Pre High Cylinder ID Calibration Pre High Cylinder Instrument Response Calibration Pre High Cylinder Bias Calibration Pre High Cylinder Drift Calibration Post Zero Cylinder ID Calibration Post Zero Cylinder Instrument Response Calibration Post Zero Cylinder Bias Calibration Post Zero Cylinder Drift Calibration Post High Cylinder ID Calibration Post High Cylinder Instrument Response Calibration Post High Cylinder Bias Calibration Post High Cylinder Drift Cavg Cavg Units Cgas Cgas Units Fuel Type Fw Fc Cgasw Cgasw Units



### Thursday, February 03, 2011 Page 21 of 24

### Marion Generating Station Boiler 123

8/30/2010
Location Stack Exit - Method 6C 3 Average Run Number Test Date Run Start Time Run Finish Time Carbon Dioxide, % Oxygen, % Fuel Factor Dry Volumetric Flow Rate, dry scfm F-Factor, dscfm/MMBtu @ %O2 Moisture, % Analyzer Make Analyzer Model Analyzer Serial Number Operating Range Operating Units No. Readings/Avg. Calibration Set Calibration Pre Zero Cylinder ID Calibration Pre Zero Cylinder Instrument Response Calibration Pre Zero Cylinder Bias Calibration Pre Zero Cylinder Drift Calibration Pre High Cylinder ID Calibration Pre High Cylinder Instrument Response Calibration Pre High Cylinder Bias Calibration Pre High Cylinder Drift Calibration Post Zero Cylinder ID Calibration Post Zero Cylinder Instrument Response Calibration Post Zero Cylinder Bias Calibration Post Zero Cylinder Drift Calibration Post High Cylinder ID Calibration Post High Cylinder Instrument Response Calibration Post High Cylinder Bias Calibration Post High Cylinder Drift Cavg Cavg Units Cgas Cgas Units Fuel Type Fw Fc Cgasw Cgasw Units



### Thursday, February 03, 2011 Page 22 of 24

### Marion Generating Station Boiler 123

8/30/2010
Location Stack Exit - Method 7E Average Run Number Test Date Run Start Time Run Finish Time Carbon Dioxide, % Oxygen, % Fuel Factor Dry Volumetric Flow Rate, dry scfm F-Factor, dscfm/MMBtu @ %O2 Moisture, % Analyzer Make Analyzer Model Analyzer Serial Number Operating Range Operating Units No. Readings/Avg. Calibration Set Calibration Pre Zero Cylinder ID Calibration Pre Zero Cylinder Instrument Response Calibration Pre Zero Cylinder Bias Calibration Pre Zero Cylinder Drift Calibration Pre High Cylinder ID Calibration Pre High Cylinder Instrument Response Calibration Pre High Cylinder Bias Calibration Pre High Cylinder Drift Calibration Post Zero Cylinder ID Calibration Post Zero Cylinder Instrument Response Calibration Post Zero Cylinder Bias Calibration Post Zero Cylinder Drift Calibration Post High Cylinder ID Calibration Post High Cylinder Instrument Response Calibration Post High Cylinder Bias Calibration Post High Cylinder Drift Cavg Cavg Units Cgas Cgas Units Fuel Type Fw Fc Cgasw Cgasw Units



### Thursday, February 03, 2011 Page 23 of 24

### Marion Generating Station Boiler 123

8/30/2010
Location Stack Exit - OTM - 27/28 Average Run Number Test Date Run Start Time Run Finish Time Net Traversing Points Net Run Time, minutes Nozzle Diameter, inches Pitot Tube Coefficient Dry Gas Meter Calibration Factor Barometric Pressure, inches of Mercury Average Orifice Meter Differential, inches H2O Dry Gas Meter Volume Sampled, cubic feet Average Dry Gas Meter Temperature, °F Dry Gas Meter Volume Sampled, dscf Total Moisture Liquid collected, g Volume of Water Vapor, standard cubic feet Moisture Content of Stack Gas, % Moisture Saturation at Stack Gas Temperature, % Dry Mole Fraction Carbon Dioxide, % Oxygen, % Carbon Monoxide & Nitrogen, % Fuel Factor Dry Molecular Weight, lb/lb-Mole Wet Molecular weight, lb/lb-Mole Flue Gas Static Pressure, inches of H2O Absolute Flue Gas Pressure, inches of Mercury Average Stack Gas Temperature, °F Average Velocity Head, inches of H2O Average Stack Gas Velocity, feet/second Stack Cross-Sectional Area, square feet Dry Volumetric Flow Rate, dry scfm Actual Wet Volumetric Flue Gas Flow Rate, acfm Percent Isokinetic of Sampling Rate, % Percent Excess Air, % F-Factor, dscfm/MMBtu @ %O2 Round Duct Diameter, inches Rectangular Duct Width, inches Rectangular Duct Length, inches Fw Fc



### Thursday, February 03, 2011 Page 24 of 24