### 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 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.

Thursday, February 03, 2011 Page 1 of 14

### Marion Generating Station Boiler 4 8/30/2010 Facility Information: Marion Generating Station 11543 LAKE OF EGYPT ROAD

Marion IL62959 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 IL60106 Contact:Jim Christ Phone:(630) 860-4740 Fax: (630) 860-4745 Email:jchrist@airtechenv.com

Air Permit Number: 976 Permitted Source ID/Name: B4 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/NAIS221112

Sampling Location Information:

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

SCC / Description10100202 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 204.96 4.68 8.78 4 204.96 12 0 0

Target Parameter Test Method Number of

Test RunsTest Run

DurationSample

Points Comments Location2,3,7,8-TCDD Method 23 3 480 0 Stack Exit 1,2,3,7,8-PeCDD Method 23 3 480 0 Stack Exit 1,2,3,4,7,8-HxCDD Method 23 3 480 0 Stack Exit 1,2,3,6,7,8-HxCDD Method 23 3 480 0 Stack Exit 1,2,3,7,8,9-HxCDD Method 23 3 480 0 Stack Exit 1,2,3,4,6,7,8-HpCDD Method 23 3 480 0 Stack Exit OCDD Method 23 3 480 0 Stack Exit



### Thursday, February 03, 2011 Page 2 of 14

### Marion Generating Station Boiler 4 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 23 – August 1997

2,3,7,8-TCDF Method 23 3 480 0 Stack Exit 1,2,3,7,8-PeCDF Method 23 3 480 0 Stack Exit 2,3,4,7,8-PeCDF Method 23 3 480 0 Stack Exit 1,2,3,4,7,8-HxCDF Method 23 3 480 0 Stack Exit 1,2,3,6,7,8-HxCDF Method 23 3 480 0 Stack Exit 2,3,4,6,7,8-HxCDF Method 23 3 480 0 Stack Exit 1,2,3,7,8,9-HxCDF Method 23 3 480 0 Stack Exit 1,2,3,4,6,7,8-HpCDF Method 23 3 480 0 Stack Exit 1,2,3,4,7,8,9-HpCDF Method 23 3 480 0 Stack Exit OCDF Method 23 3 480 0 Stack Exit Other TCDD Method 23 0 Stack Exit Other PeCDD Method 23 0 Stack Exit Other HxCDD Method 23 0 Stack Exit Other HpCDD Method 23 0 Stack Exit Other TCDF Method 23 0 Stack Exit Other PeCDF Method 23 0 Stack Exit Other HxCDF Method 23 0 Stack Exit Other HpCDF Method 23 0 Stack Exit Total Dioxins Method 23 3 480 0 Stack Exit Total Furans Method 23 3 480 0 Stack Exit 3,3',4,4'-TCB (PCB77) Method 23 3 480 0 Stack Exit 3,4,4',5-TCB (PCB81) Method 23 3 480 0 Stack Exit 2,3,3',4,4'-PeCB (PCB105) Method 23 3 480 0 Stack Exit 2,3,4,4',5-PeCB (PCB114) Method 23 3 480 0 Stack Exit 2,3',4,4',5-PeCB (PCB118) Method 23 3 480 0 Stack Exit 2',3,4,4',5-PeCB (PCB123) Method 23 3 480 0 Stack Exit 3,3',4,4',5-PeCB (PCB126) Method 23 3 480 0 Stack Exit 2,3,3',4,4',5/2,3,3',4,4',5'-

HxCB (PCBs156/157) Method 23 3 480 0 Stack Exit 2,3',4,4',5,5'-HxCB (PCB167)Method 23 3 480 0 Stack Exit 3,3',4,4',5,5'-HxCB (PCB169)Method 23 3 480 0 Stack Exit 2,3,3',4,4',5,5'-HpCB

(PCB189) Method 23 3 480 0 Stack Exit

Total PCBs Method 23 3 480 0 Stack Exit Total TEQ Method 23 3 480 0 Stack Exit



### Thursday, February 03, 2011 Page 3 of 14

### Marion Generating Station Boiler 4 8/30/2010 Sampling / Stack Data Results Summary 

### LocationStack Exit - Method 23 Average Run Number 1 2 3 Test Date 6/8/2010 6/9/2010 6/10/2010 Run Start Time 8:20:00 AM 6:57:00 AM6:45:00 AM

Run Finish Time 5:15:00 PM4:02:00 PM3:17:00 PM Net Run Time, minutes 480 480 480 Dry Gas Meter Volume Sampled, dscf 315.603 319.165 310.085 314.951 Moisture Content of Stack Gas, % 9.12 9.25 9.72 9.363 Moisture Saturation at Stack Gas Temperature, % 15.46 15.93 15.69 15.693 Carbon Dioxide, % 14.5 14.6 14.4 14.500 Oxygen, % 4.7 4.6 4.8 4.700 Average Stack Gas Temperature, °F 131.08 132.00 131.50 131.527 Dry Volumetric Flow Rate, dry scfm 446,775.8447,152.7 441,223.3445,050.600 Actual Wet Volumetric Flue Gas Flow Rate, acfm 547,415.9552,639.9 546,591.1548,882.300 Percent Isokinetic of Sampling Rate, % 103.0 99.9 98.4 100.433 F-Factor, dscfm/MMBtu @ %O2 10326 10114 10198 10,212.667 Fw 0 0 0 0.000 Fc 0 0 0 0.000



### Thursday, February 03, 2011 Page 4 of 14

### Marion Generating Station Boiler 4 8/30/2010 Emissions Summary 

### Location:Stack Exit - Method 23 Compound: 1,2,3,4,6,7,8-HpCDD Average RunNumber 1 2 3 Mass_mg 0.0000000092 0.0000000061 0.0000000103 0.000 lb/mmBtuO2 8.56E-13 5.46E-13 9.69E-13 0.000 ng/dscm 1.03E-03 6.75E-04 1.17E-03 0.001 ng/dscm@7%O2 8.84E-04 5.76E-04 1.01E-03 0.001 

### Compound: 1,2,3,4,6,7,8-HpCDF Average RunNumber 1 2 3 Mass_mg 0.0000000056 0.000000005 0.0000000066 0.000 lb/mmBtuO2 5.21E-13 4.48E-13 6.21E-13 0.000 ng/dscm 6.27E-04 5.53E-04 7.52E-04 0.001 ng/dscm@7%O2 5.38E-04 4.72E-04 6.49E-04 0.001 

### Compound: 1,2,3,4,7,8,9-HpCDF Average RunNumber 1 2 3 Mass_mg 0.0000000073 0.0000000052 0.0000000064 0.000 lb/mmBtuO2 6.79E-13 4.66E-13 6.02E-13 0.000 ng/dscm 8.17E-04 5.75E-04 7.29E-04 0.001 ng/dscm@7%O2 7.01E-04 4.90E-04 6.29E-04 0.001 

### Compound: 1,2,3,4,7,8-HxCDD Average RunNumber 1 2 3 Mass_mg 0.0000000068 0.0000000053 0.0000000057 0.000 lb/mmBtuO2 6.33E-13 4.75E-13 5.36E-13 0.000 ng/dscm 7.61E-04 5.87E-04 6.49E-04 0.001 ng/dscm@7%O2 6.53E-04 5.01E-04 5.60E-04 0.001 

### Compound: 1,2,3,4,7,8-HxCDF Average RunNumber 1 2 3 Mass_mg 0.0000000047 0.0000000033 0.0000000036 0.000 lb/mmBtuO2 4.37E-13 2.96E-13 3.39E-13 0.000 ng/dscm 5.26E-04 3.65E-04 4.10E-04 0.000 ng/dscm@7%O2 4.51E-04 3.11E-04 3.54E-04 0.000 

### Compound: 1,2,3,6,7,8-HxCDD Average RunNumber 1 2 3 Mass_mg 0.0000000067 0.0000000052 0.0000000056 0.000 lb/mmBtuO2 6.23E-13 4.66E-13 5.27E-13 0.000 ng/dscm 7.50E-04 5.75E-04 6.38E-04 0.001 ng/dscm@7%O2 6.44E-04 4.90E-04 5.51E-04 0.001 

### Compound: 1,2,3,6,7,8-HxCDF Average



### Thursday, February 03, 2011 Page 5 of 14

### Marion Generating Station Boiler 4 8/30/2010 RunNumber 1 2 3 Mass_mg 0.0000000041 0.0000000029 0.00000000317 0.000 lb/mmBtuO2 3.82E-13 2.60E-13 2.98E-13 0.000 ng/dscm 4.59E-04 3.21E-04 3.61E-04 0.000 ng/dscm@7%O2 3.94E-04 2.74E-04 3.12E-04 0.000 

### Compound: 1,2,3,7,8,9-HxCDD Average RunNumber 1 2 3 Mass_mg 0.0000000068 0.0000000053 0.0000000057 0.000 lb/mmBtuO2 6.33E-13 4.75E-13 5.36E-13 0.000 ng/dscm 7.61E-04 5.87E-04 6.49E-04 0.001 ng/dscm@7%O2 6.53E-04 5.01E-04 5.60E-04 0.001 

### Compound: 1,2,3,7,8,9-HxCDF Average RunNumber 1 2 3 Mass_mg 0.0000000052 0.0000000036 0.0000000039 0.000 lb/mmBtuO2 4.84E-13 3.22E-13 3.67E-13 0.000 ng/dscm 5.82E-04 3.98E-04 4.44E-04 0.000 ng/dscm@7%O2 4.99E-04 3.39E-04 3.83E-04 0.000 

### Compound: 1,2,3,7,8-PeCDD Average RunNumber 1 2 3 Mass_mg 0.0000000069 0.0000000059 0.0000000086 0.000 lb/mmBtuO2 6.42E-13 5.29E-13 8.09E-13 0.000 ng/dscm 7.72E-04 6.53E-04 9.80E-04 0.001 ng/dscm@7%O2 6.62E-04 5.57E-04 8.46E-04 0.001 

### Compound: 1,2,3,7,8-PeCDF Average RunNumber 1 2 3 Mass_mg 0.0000000133 0.0000000042 0.0000000049 0.000 lb/mmBtuO2 1.24E-12 3.76E-13 4.61E-13 0.000 ng/dscm 1.49E-03 4.65E-04 5.58E-04 0.001 ng/dscm@7%O2 1.28E-03 3.97E-04 4.82E-04 0.001 

### Compound:2,3,3',4,4',5,5'-HpCB (PCB189) Average RunNumber 1 2 3 Mass_mg 0.0000000195 0.0000000196 0.0000000089 0.000 lb/mmBtuO2 1.81E-12 1.76E-12 8.38E-13 0.000 ng/dscm 2.18E-03 2.17E-03 1.01E-03 0.002 ng/dscm@7%O2 1.87E-03 1.85E-03 8.72E-04 0.002 

### Compound:2,3,3',4,4',5/2,3,3',4,4',5'-HxCB (PC Average RunNumber 1 2 3 Mass_mg 0.000000128 0.000000385 0.00000028 0.000 lb/mmBtuO2 1.19E-11 3.45E-11 2.64E-11 0.000 ng/dscm 1.43E-02 4.26E-02 3.19E-02 0.030 ng/dscm@7%O2 1.23E-02 3.63E-02 2.75E-02 0.025



### Thursday, February 03, 2011 Page 6 of 14

### Marion Generating Station Boiler 4 8/30/2010 Compound:2,3,3',4,4'-PeCB (PCB105) Average RunNumber 1 2 3 Mass_mg 0.000000245 0.000000263 0.000000265 0.000 lb/mmBtuO2 2.28E-11 2.36E-11 2.49E-11 0.000 ng/dscm 2.74E-02 2.91E-02 3.02E-02 0.029 ng/dscm@7%O2 2.35E-02 2.48E-02 2.61E-02 0.025 

### Compound:2,3',4,4',5,5'-HxCB (PCB167) Average RunNumber 1 2 3 Mass_mg 0.000000021 0.0000000456 0.0000000267 0.000 lb/mmBtuO2 1.95E-12 4.08E-12 2.51E-12 0.000 ng/dscm 2.35E-03 5.05E-03 3.04E-03 0.003 ng/dscm@7%O2 2.02E-03 4.31E-03 2.62E-03 0.003 

### Compound:2,3,4,4',5-PeCB (PCB114) Average RunNumber 1 2 3 Mass_mg 0.000000025 0.0000000364 0.0000000137 0.000 lb/mmBtuO2 2.33E-12 3.26E-12 1.29E-12 0.000 ng/dscm 2.80E-03 4.03E-03 1.56E-03 0.003 ng/dscm@7%O2 2.40E-03 3.44E-03 1.35E-03 0.002 

### Compound:2,3',4,4',5-PeCB (PCB118) Average RunNumber 1 2 3 Mass_mg 0.000000865 0.000000972 0.000000964 0.000 lb/mmBtuO2 8.05E-11 8.71E-11 9.07E-11 0.000 ng/dscm 9.68E-02 1.08E-01 1.10E-01 0.105 ng/dscm@7%O2 8.31E-02 9.21E-02 9.50E-02 0.090 

### Compound:2',3,4,4',5-PeCB (PCB123) Average RunNumber 1 2 3 Mass_mg 0.000000026 0.0000000436 0.000000015 0.000 lb/mmBtuO2 2.42E-12 3.91E-12 1.41E-12 0.000 ng/dscm 2.91E-03 4.82E-03 1.71E-03 0.003 ng/dscm@7%O2 2.50E-03 4.11E-03 1.48E-03 0.003 

### Compound:2,3,4,6,7,8-HxCDF Average RunNumber 1 2 3 Mass_mg 0.0000000045 0.0000000031 0.0000000033 0.000 lb/mmBtuO2 4.19E-13 2.78E-13 3.11E-13 0.000 ng/dscm 5.04E-04 3.43E-04 3.76E-04 0.000 ng/dscm@7%O2 4.32E-04 2.92E-04 3.25E-04 0.000 

### Compound:2,3,4,7,8-PeCDF Average RunNumber 1 2 3 Mass_mg 0.0000000067 0.0000000043 0.000000005 0.000 lb/mmBtuO2 6.23E-13 3.85E-13 4.71E-13 0.000



### Thursday, February 03, 2011 Page 7 of 14

### Marion Generating Station Boiler 4 8/30/2010 ng/dscm 7.50E-04 4.76E-04 5.70E-04 0.001 ng/dscm@7%O2 6.44E-04 4.06E-04 4.92E-04 0.001 

### Compound:2,3,7,8-TCDD Average RunNumber 1 2 3 Mass_mg 0.0000000157 0.0000000108 0.0000000124 0.000 lb/mmBtuO2 1.46E-12 9.67E-13 1.17E-12 0.000 ng/dscm 1.76E-03 1.20E-03 1.41E-03 0.001 ng/dscm@7%O2 1.51E-03 1.02E-03 1.22E-03 0.001 

### Compound:2,3,7,8-TCDF Average RunNumber 1 2 3 Mass_mg 0.000000024 0.0000000099 0.0000000084 0.000 lb/mmBtuO2 2.23E-12 8.87E-13 7.91E-13 0.000 ng/dscm 2.69E-03 1.10E-03 9.57E-04 0.002 ng/dscm@7%O2 2.31E-03 9.38E-04 8.26E-04 0.001 

### Compound:3,3',4,4',5,5'-HxCB (PCB169) Average RunNumber 1 2 3 Mass_mg 0.0000000227 0.0000000242 0.0000000118 0.000 lb/mmBtuO2 2.11E-12 2.17E-12 1.11E-12 0.000 ng/dscm 2.54E-03 2.68E-03 1.34E-03 0.002 ng/dscm@7%O2 2.18E-03 2.29E-03 1.16E-03 0.002 

### Compound:3,3',4,4',5-PeCB (PCB126) Average RunNumber 1 2 3 Mass_mg 0.0000000273 0.0000000283 0.0000000138 0.000 lb/mmBtuO2 2.54E-12 2.54E-12 1.30E-12 0.000 ng/dscm 3.06E-03 3.13E-03 1.57E-03 0.003 ng/dscm@7%O2 2.63E-03 2.67E-03 1.36E-03 0.002 

### Compound:3,3',4,4'-TCB (PCB77) Average RunNumber 1 2 3 Mass_mg 0.0000000565 0.000000104 0.0000000848 0.000 lb/mmBtuO2 5.26E-12 9.32E-12 7.98E-12 0.000 ng/dscm 6.32E-03 1.15E-02 9.66E-03 0.009 ng/dscm@7%O2 5.42E-03 9.81E-03 8.34E-03 0.008 

### Compound:3,4,4',5-TCB (PCB81) Average RunNumber 1 2 3 Mass_mg 0.0000000344 0.0000000323 0.0000000186 0.000 lb/mmBtuO2 3.20E-12 2.89E-12 1.75E-12 0.000 ng/dscm 3.85E-03 3.57E-03 2.12E-03 0.003 ng/dscm@7%O2 3.30E-03 3.04E-03 1.83E-03 0.003 

### Compound:OCDD Average RunNumber 1 2 3 

### Thursday, February 03, 2011 Page 8 of 14

### Marion Generating Station Boiler 4 8/30/2010 Mass_mg 0.0000000157 0.0000000344 0.0000000616 0.000 lb/mmBtuO2 1.46E-12 3.08E-12 5.80E-12 0.000 ng/dscm 1.76E-03 3.81E-03 7.02E-03 0.004 ng/dscm@7%O2 1.51E-03 3.25E-03 6.06E-03 0.004 

### Compound:OCDF Average RunNumber 1 2 3 Mass_mg 0.0000000079 0.0000000076 0.0000000111 0.000 lb/mmBtuO2 7.35E-13 6.81E-13 1.04E-12 0.000 ng/dscm 8.84E-04 8.41E-04 1.26E-03 0.001 ng/dscm@7%O2 7.58E-04 7.17E-04 1.09E-03 0.001 

### Compound:Other HpCDD Average RunNumber 1 2 3 Mass_mg 0.0000000092 0.0000000082 0.0000000127 0.000 lb/mmBtuO2 8.56E-13 7.35E-13 1.20E-12 0.000 ng/dscm 1.03E-03 9.07E-04 1.45E-03 0.001 ng/dscm@7%O2 8.84E-04 7.73E-04 1.25E-03 0.001 

### Compound:Other HpCDF Average RunNumber 1 2 3 Mass_mg 0.0000000064 0.0000000026 0.0000000036 0.000 lb/mmBtuO2 5.96E-13 2.33E-13 3.39E-13 0.000 ng/dscm 7.16E-04 2.88E-04 4.10E-04 0.000 ng/dscm@7%O2 6.14E-04 2.46E-04 3.54E-04 0.000 

### Compound:Other HxCDD Average RunNumber 1 2 3 Mass_mg 0.00000003 0.000000028 0.000000021 0.000 lb/mmBtuO2 2.79E-12 2.51E-12 1.98E-12 0.000 ng/dscm 3.36E-03 3.10E-03 2.39E-03 0.003 ng/dscm@7%O2 2.88E-03 2.64E-03 2.06E-03 0.003 

### Compound:Other HxCDF Average RunNumber 1 2 3 Mass_mg 0.0000000047 0.0000000032 0.0000000035 0.000 lb/mmBtuO2 4.37E-13 2.87E-13 3.29E-13 0.000 ng/dscm 5.26E-04 3.54E-04 3.99E-04 0.000 ng/dscm@7%O2 4.51E-04 3.02E-04 3.44E-04 0.000 

### Compound:Other PeCDD Average RunNumber 1 2 3 Mass_mg 0.0000000069 0.0000001526 0.0000000296 0.000 lb/mmBtuO2 6.42E-13 1.37E-11 2.79E-12 0.000 ng/dscm 7.72E-04 1.69E-02 3.37E-03 0.007 ng/dscm@7%O2 6.62E-04 1.44E-02 2.91E-03 0.006



### Thursday, February 03, 2011 Page 9 of 14

### Marion Generating Station Boiler 4 8/30/2010 Compound:Other PeCDF Average RunNumber 1 2 3 Mass_mg 0.0000000093 0.0000000071 0.0000000068 0.000 lb/mmBtuO2 8.65E-13 6.36E-13 6.40E-13 0.000 ng/dscm 1.04E-03 7.86E-04 7.75E-04 0.001 ng/dscm@7%O2 8.92E-04 6.70E-04 6.69E-04 0.001 

### Compound:Other TCDD Average RunNumber 1 2 3 Mass_mg 0.0000000157 0.0000000108 0.0000000131 0.000 lb/mmBtuO2 1.46E-12 9.67E-13 1.23E-12 0.000 ng/dscm 1.76E-03 1.20E-03 1.49E-03 0.001 ng/dscm@7%O2 1.51E-03 1.02E-03 1.29E-03 0.001 

### Compound:Other TCDF Average RunNumber 1 2 3 Mass_mg 0.000000114 0.0000000248 0.0000000196 0.000 lb/mmBtuO2 1.06E-11 2.22E-12 1.84E-12 0.000 ng/dscm 1.28E-02 2.74E-03 2.23E-03 0.006 ng/dscm@7%O2 1.10E-02 2.34E-03 1.93E-03 0.005 

### Compound:Total Dioxins Average RunNumber 1 2 3 Mass_mg 0.0000001296 0.0000002726 0.0000001863 0.000 lb/mmBtuO2 1.21E-11 2.44E-11 1.75E-11 0.000 ng/dscm 1.45E-02 3.02E-02 2.12E-02 0.022 ng/dscm@7%O2 1.24E-02 2.58E-02 1.83E-02 0.019 

### Compound:Total Furans Average RunNumber 1 2 3 Mass_mg 0.0000002177 0.0000000868 0.00000008987 0.000 lb/mmBtuO2 2.03E-11 7.78E-12 8.46E-12 0.000 ng/dscm 2.44E-02 9.61E-03 1.02E-02 0.015 ng/dscm@7%O2 2.09E-02 8.20E-03 8.81E-03 0.013 

### Compound:Total PCBs Average RunNumber 1 2 3 Mass_mg 0.0000014 0.00000175 0.00000156 0.000 lb/mmBtuO2 1.30E-10 1.57E-10 1.47E-10 0.000 ng/dscm 1.57E-01 1.94E-01 1.78E-01 0.176 ng/dscm@7%O2 1.35E-01 1.65E-01 1.54E-01 0.151 

### Compound:Total TEQ Average RunNumber 1 2 3 Mass_mg 0.00000000669 0.0000000043 0.00000000563 0.000 lb/mmBtuO2 6.23E-13 3.85E-13 5.30E-13 0.000



### Thursday, February 03, 2011 Page 10 of 14

### Marion Generating Station Boiler 4 8/30/2010

Process Run Data ng/dscm 7.49E-04 4.76E-04 6.41E-04 0.001 ng/dscm@7%O2 6.43E-04 4.06E-04 5.53E-04 0.001



### Thursday, February 03, 2011 Page 11 of 14

### Marion Generating Station Boiler 4 8/30/2010 Process Run Data



### Run Name Value UOM Comments Target Value 1 Coal Firing Rate 1810 tons/day 1800 

### 2Coal Firing Rate 1787 tons/day 1800 3Coal Firing Rate 1800 tons/day 1800 1 Average Heat Input 1898 MMBtu/hr 1900 

### 2Average Heat Input 1967 MMBtu/hr 1900 3Average Heat Input 1905.5MMBtu/hr 1900 1 Steam Output 12511000 lb steam/hr1300 

### 2Steam Output 12411000 lb steam/hr1300 3Steam Output 14491000 lb steam/hr1300 1 Flue Gas Flow Rate 3E+07 dscfm 3E+07 

### 1 FGD Scrubber Liquor pH A 5.2 pH 5.5 1 FGD Scrubber Liquor Flow Rate A 37 gal/min 50 1 Flue Gas Oxygen Content 7.3 % 7 

### 1 Flue Gas Carbon Dioxide Content 12.3 % 13 1 Flue Gas Sampling Point Temperature 141.5 Deg F 145 1 Unit Gross Electrical Output 165 MW 165 

### 1 FGD Scrubber Liquor Flow Rate B 32 gal/min 50 2Flue Gas Flow Rate 3E+07 dscfm 3E+07 2FGD Scrubber Liquor pH A 5.3 pH 5.5 

### 2FGD Scrubber Liquor Flow Rate A 36 gal/min 50 2Flue Gas Oxygen Content 7.4 % 7 2Flue Gas Carbon Dioxide Content 12.2 % 13 

### 2Flue Gas Sampling Point Temperature 144.7 Deg F 145 2Unit Gross Electrical Output 169 MW 165 

### 2FGD Scrubber Liquor Flow Rate B 57 gal/min 50 3Flue Gas Flow Rate 3E+07 dscfm 3E+07 3FGD Scrubber Liquor pH A 5.3 pH 5.5 

### 3FGD Scrubber Liquor Flow Rate A 5.4 gal/min 50 3Flue Gas Oxygen Content 7.3 % 7 3Flue Gas Carbon Dioxide Content 12.3 % 13 

### 3Flue Gas Sampling Point Temperature 144.8 Deg F 145 3Unit Gross Electrical Output 166 MW 165 3FGD Scrubber Liquor Flow Rate B 71 gal/min 50



### Thursday, February 03, 2011 Page 12 of 14

### Marion Generating Station Boiler 4 8/30/2010

APCD Run Data

Process Lab Run Data 1 FGD Scrubber Liquor pH 5.3 pH 5.5 

### 2FGD Scrubber Liquor pH 5.4 pH 5.5 3FGD Scrubber Liquor pH 5.3 pH 5.5



### Run Name Value UOM Comments Target Value 1 ELECTROSTATIC PRECIPITATOR 0 0 

### 1 SCRUBBER 0 0 1 SCR (SELECTIVE CATALYTIC REDUCTION) 0 0

Run Name ValueUOM Comments 

### 1 See 4b Comments. 0

Thursday, February 03, 2011 Page 13 of 14

### Marion Generating Station Boiler 4 8/30/2010 Sampling / Stack Data Results Detail 

### LocationStack Exit - Method 23 Average Run Number 1 2 3 Test Date 6/8/2010 6/9/2010 6/10/2010 Run Start Time 8:20:00 AM6:57:00 AM6:45:00 AM Run Finish Time 5:15:00 PM4:02:00 PM3:17:00 PM Net Traversing Points 12 12 12 Net Run Time, minutes 480 480 480 Nozzle Diameter, inches 0.245 0.25 0.25 0.248 Pitot Tube Coefficient 0.84 0.84 0.84 0.840 Dry Gas Meter Calibration Factor 1.0077 1.0077 1.0077 1.008 Barometric Pressure, inches of Mercury 30.06 29.93 29.99 29.993 Average Orifice Meter Differential, inches H2O 1.52 1.55 1.52 1.530 Dry Gas Meter Volume Sampled, cubic feet 322.860 325.700 318.770 322.443 Average Dry Gas Meter Temperature, °F 88.88 85.21 90.29 88.127 Dry Gas Meter Volume Sampled, dscf 315.603 319.165 310.085 314.951 Total Moisture Liquid collected, g 673 691 709 691.000 Volume of Water Vapor, standard cubic feet 31.68 32.53 33.37 32.527 Moisture Content of Stack Gas, % 9.12 9.25 9.72 9.363 Moisture Saturation at Stack Gas Temperature, % 15.46 15.93 15.69 15.693 Dry Mole Fraction 0.9088 0.9075 0.9028 0.906 Carbon Dioxide, % 14.5 14.6 14.4 14.500 Oxygen, % 4.7 4.6 4.8 4.700 Carbon Monoxide & Nitrogen, % 80.8 80.8 80.8 80.800 Fuel Factor 1.12 1.12 1.12 Dry Molecular Weight, lb/lb-Mole 30.51 30.52 30.50 30.510 Wet Molecular weight, lb/lb-Mole 29.37 29.36 29.29 29.340 Flue Gas Static Pressure, inches of H2O 0.3 -0.3 -0.3 -0.100 Absolute Flue Gas Pressure, inches of Mercury 30.08 29.91 29.97 29.987 Average Stack Gas Temperature, °F 131.08 132.00 131.50 131.527 Average Velocity Head, inches of H2O 0.4594631074 198880.464737672

8068050.454883107

46141 0.460 Average Stack Gas Velocity, feet/second 39.82 40.20 39.76 39.927 Stack Cross-Sectional Area, square feet 229.121 229.121 229.121 229.121 Dry Volumetric Flow Rate, dry scfm 446,775.8 447,152.7 441,223.3445,050.600 Actual Wet Volumetric Flue Gas Flow Rate, acfm 547,415.9 552,639.9 546,591.1548,882.300 Percent Isokinetic of Sampling Rate, % 103.0 99.9 98.4 100.433 Percent Excess Air, % 28.3 27.5 29.0 28.267 F-Factor, dscfm/MMBtu @ %O2 10326 10114 1019810,212.667 Round Duct Diameter, inches 204.96 204.96 204.96 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



### Thursday, February 03, 2011 Page 14 of 14