### Name: Michael L Menne

Title: VP Environmental Safety/Health Company: Ameren Services Sign Date: 9/7/2010 Name: Bill Ansell Title: Project Manager Company:Clean Air Engineering, Inc. Sign Date: 9/7/2010 Permitted Facility Representative / Date Testing Company Representative / Date 

## Sioux Unit 2 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.

Tuesday, January 18, 2011 Page 1 of 18

### Sioux Unit 2
9/7/2010 Facility Information: Sioux 8501 N. State Rt 94

West Alton MO63386 Contact:Donald Schuh Phone:314-554-2658 Fax: 314-554-4182 Email: dschuh@ameren.com Testing Company: Clean Air Engineering 500 West Wood Street

Palatine IL60067 Contact:Bill Ansell Phone:847-654-4545 Fax: 847-991-3385 Email:bansell@cleanair.com

Air Permit Number: 2107 Permitted Source ID/Name: Enter the Boiler ID of the tested boiler (left) 2 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: Ameren UE owns and operates the Sioux Power Plant, located in West Alton, Missouri. Unit 2 is a Babcock and Wilcox cyclone-fired boiler installed in 1968 and rated at approximately 524 MWe gross and 4,920 million Btu per hour (MMBtu/hr) heat input. The boiler fires a mix of sub-bituminous and bituminous coals. The Unit 2 boiler utilizes an over-fire air system to control NOX emissions. Unit 2 is equipped with a cold side electrostatic precipitator (ESP) with flue gas conditioning to control particulate emissions. The testing described in this document was performed at the Unit 2 Stack. Industry/SCC/NAIS221112

Sampling Location Information:

Test Parameter Information: AFS #:2918300001 FRS #:110000442209

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 225 3645 2903 4 0 16 0 0

Target Parameter Test Method Number of

Test Runs Test Run

Duration Sample

Points Comments Location Carbon Monoxide Method 10 3 120 0 Stack Exit Total organic compounds

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



### Tuesday, January 18, 2011 Page 2 of 18

### Sioux Unit 2
9/7/2010

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. Oxygen (O2) and carbon dioxide (CO2) data (units of dry volume percent, %dv) used in molecular weight calculations, O2 correction and calculation of Fd-based emissions (units of lb/MMBtu) were obtained in the following manner during the test program: • For non-instrumental (wet) sampling methods, a modified version of EPA Method 3B was utilized. o Multi-point, integrated gas samples (IGS) were continuously collected at a constant rate from a slipstream of the exhaust of the sample trains into a flexible vinyl bag (IGS bag), per Method 3B specifications. o A calibrated paramagnetic/IR analyzer was used in place of a traditional Orsat analyzer to measure drift-corrected O2 and CO2 concentrations of the IGS bags, per Method 3A specifications. o Multiple IGS bags were collected during lengthy sample runs to ensure sample train integrity. Average O2 and CO2 results for each test run were calculated. Hydrogen Fluoride Method 26A 3 60 0 Stack Exit Hydrogen Chloride Method 26A 3 60 0 Stack Exit Organic Condensible

Particulate OTM - 27/28 3 360 0 Use only for dry stacks. Delete Method 5/OTM28 tests. Stack Exit

Inorganic (Aqueous)

Condensible Part. OTM - 27/28 3 360 0 Use only for dry stacks. Delete Method 5/OTM28 tests. Stack Exit

Filterable PM2.5 OTM - 27/28 3 360 0 Use only for dry stacks. Delete Method 5/OTM28 tests. Stack Exit

Total PM2.5 OTM - 27/28 3 360 0 Stack Exit Filterable Particulate Method 29 3 240 0 Stack Exit Antimony Method 29 3 240 0 Stack Exit Arsenic Method 29 3 240 0 Stack Exit Beryllium Method 29 3 240 0 Stack Exit Cadmium Method 29 3 240 0 Stack Exit Chromium Method 29 3 240 0 Stack Exit Lead Method 29 3 240 0 Stack Exit Manganese Method 29 3 240 0 Stack Exit Selenium Method 29 3 240 0 Stack Exit Cobalt Method 29 3 240 0 Stack Exit Nickel Method 29 3 240 0 Stack Exit



### Tuesday, January 18, 2011 Page 3 of 18

### Sioux Unit 2
9/7/2010 Sampling / Stack Data Results Summary


### Location Stack Exit - Method 10 Average Run Number 1 2 3 Test Date 5/4/2010 5/4/2010 5/4/2010 Run Start Time 10:18:00 AM1:37:00 PM 4:44:00 PM Run Finish Time 12:23:00 PM3:50:00 PM 6:51:00 PM Carbon Dioxide, % 15.5 15.6 15.5 15.533 Oxygen, % 4.1 4 4.1 4.067 Dry Volumetric Flow Rate, dry scfm 882901 802363 860293 848,519.000 F-Factor, dscfm/MMBtu @ %O2 9756 9665 9751 9,724.000 Moisture, % 10.5 18.7 11.6 13.600 Fuel Type Override Override Override Fw 0 0 0 0.000 Fc 0 0 0 0.000



### Location Stack Exit - Method 25A Average Run Number 1 2 3 Test Date 5/4/2010 5/4/2010 5/4/2010 Run Start Time 10:18:00 AM1:37:00 PM 4:44:00 PM Run Finish Time 12:23:00 PM3:50:00 PM 6:51:00 PM Carbon Dioxide, % 15.5 15.6 15.5 15.533 Oxygen, % 4.1 4 4.1 4.067 Dry Volumetric Flow Rate, dry scfm 882901 802363 860293 848,519.000 F-Factor, dscfm/MMBtu @ %O2 9756 9665 9751 9,724.000 Moisture, % 10.5 18.7 11.6 13.600 Fuel Type Override Override Override Fw 0 0 0 0.000 Fc 0 0 0 0.000



### Tuesday, January 18, 2011 Page 4 of 18

### Sioux Unit 2
9/7/2010
Location Stack Exit - Method 26A Average Run Number M26A-1 M26A-2 M26A-3 Test Date 4/27/2010 4/27/2010 4/27/2010 Run Start Time 10:44:00 AM 9:34:00 AM 9:00:00 AM

Run Finish Time 12:37:00 PM 11:22:00 AM10:57:00 AM

Net Run Time, minutes 64 64 64 Dry Gas Meter Volume Sampled, dscf 40.068 39.118 40.165 39.784 Moisture Content of Stack Gas, % 17.65 22.63 21.02 20.433 Moisture Saturation at Stack Gas Temperature, % 100.00 100.00 100.00 100.000 Carbon Dioxide, % 12.3 14.3 14 13.533 Oxygen, % 4.9 4.6 4.5 4.667 Average Stack Gas Temperature, °F 312.75 312.38 316.94 314.023 Dry Volumetric Flow Rate, dry scfm 827,553.3 770,335.0 784,924.4 794,270.900 Actual Wet Volumetric Flue Gas Flow Rate, acfm 1,520,024.11,505,279.4 1,493,848.21,506,383.90 0 Percent Isokinetic of Sampling Rate, % 106.1 111.3 112.1 109.833 F-Factor, dscfm/MMBtu @ %O2 9939 10032 10043 10,004.667 Fw 0 0 0 0.000 Fc 0 0 0 0.000



### Tuesday, January 18, 2011 Page 5 of 18

### Sioux Unit 2
9/7/2010
Location Stack Exit - Method 29 Average Run Number M5/29-1 M5/29-2 M5/29-3 Test Date 4/27/2010 4/27/2010 5/3/2010 Run Start Time 11:15:00 AM 9:59:00 AM 9:23:00 AM

Run Finish Time 3:56:00 PM2:49:00 PM 2:05:00 PM Net Run Time, minutes 240 240 240 Dry Gas Meter Volume Sampled, dscf 146.250 146.807 150.444 147.834 Moisture Content of Stack Gas, % 11.54 11.81 12.04 11.797 Moisture Saturation at Stack Gas Temperature, % 100.00 100.00 100.00 100.000 Carbon Dioxide, % 12.3 14.3 14 13.533 Oxygen, % 4.98 4.6 4.5 4.693 Average Stack Gas Temperature, °F 314.31 314.96 317.85 315.707 Dry Volumetric Flow Rate, dry scfm 833,111.4 838,917.8 850,391.5 840,806.900 Actual Wet Volumetric Flue Gas Flow Rate, acfm 1,427,414.41,436,029.3 1,454,915.71,439,453.13 3 Percent Isokinetic of Sampling Rate, % 101.5 101.2 102.3 101.667 F-Factor, dscfm/MMBtu @ %O2 9939 10032 10043 10,004.667 Fw 0 0 0 0.000 Fc 0 0 0 0.000



### Tuesday, January 18, 2011 Page 6 of 18

### Sioux Unit 2
9/7/2010
Location Stack Exit - OTM - 27/28 Average Run Number M27/28-1 M27/28-2 M27/28-3 Test Date 4/27/2010 4/28/2010 5/2/2010 Run Start Time 10:44:00 AM 9:10:00 AM 8:34:00 AM

Run Finish Time 5:50:42 PM4:19:18 PM 3:17:54 PM Net Run Time, minutes 383.7 387.3 388.9 Dry Gas Meter Volume Sampled, dscf 131.644 132.310 132.881 132.278 Moisture Content of Stack Gas, % 11.14 11.42 11.64 11.400 Moisture Saturation at Stack Gas Temperature, % 100.00 100.00 100.00 100.000 Carbon Dioxide, % 14.3 14 14.2 14.167 Oxygen, % 4.6 4.6 4.6 4.600 Average Stack Gas Temperature, °F 315.96 316.94 320.02 317.640 Dry Volumetric Flow Rate, dry scfm 844,112.9 851,146.3 852,173.1 849,144.100 Actual Wet Volumetric Flue Gas Flow Rate, acfm 1,442,821.81,454,253.0 1,455,412.71,450,829.16 7 Percent Isokinetic of Sampling Rate, % 91.5 90.3 90.2 90.667 F-Factor, dscfm/MMBtu @ %O2 9939 10009 10043 9,997.000 Fw 0 0 0 0.000 Fc 0 0 0 0.000



### Tuesday, January 18, 2011 Page 7 of 18

### Sioux Unit 2
9/7/2010 Emissions Summary


### Location: Stack Exit - Method 10 Compound: Carbon Monoxide Average Run 1 2 3 lb/mmBtuO2 9.64E-02 1.23E-01 1.14E-01 0.111



### Location: Stack Exit - Method 25A 

### Compound: Total organic compounds (TOC) as Average Run 1 2 3 lb/mmBtuO2 3.21E-04 4.54E-04 8.25E-04 0.001



### Location: Stack Exit - Method 26A Compound: Hydrogen Chloride Average RunNumber M26A-1 M26A-2 M26A-3 Mass_mg 21.864 21.338 24.222 22.475 lb/mmBtuO2 1.56E-02 1.55E-02 1.70E-02 0.016 

### Compound: Hydrogen Fluoride Average RunNumber M26A-1 M26A-2 M26A-3 Mass_mg 1.29 3.061 2.458 2.270 lb/mmBtuO2 9.22E-04 2.22E-03 1.73E-03 0.002



### Location: Stack Exit - Method 29 Compound: Antimony Average RunNumber M5/29-1 M5/29-2 M5/29-3 Mass_mg 0.0294489 0.0079962 0.0003744 0.013 lb/mmBtuO2 5.79E-06 1.54E-06 7.02E-08 0.000 

### Compound: Arsenic Average RunNumber M5/29-1 M5/29-2 M5/29-3 Mass_mg 0.0061412 0.0075803 0.0081034 0.007 lb/mmBtuO2 1.21E-06 1.46E-06 1.52E-06 0.000 

### Compound: Beryllium Average RunNumber M5/29-1 M5/29-2 M5/29-3 Mass_mg 0.000074 0.0000927 0.0001124 0.000 lb/mmBtuO2 1.46E-08 1.79E-08 2.11E-08 0.000 

### Compound: Cadmium Average RunNumber M5/29-1 M5/29-2 M5/29-3 Mass_mg 0.0002645 0.0002405 0.000259 0.000 lb/mmBtuO2 5.20E-08 4.65E-08 4.86E-08 0.000



### Tuesday, January 18, 2011 Page 8 of 18

### Sioux Unit 2
9/7/2010 Compound: Chromium Average RunNumber M5/29-1 M5/29-2 M5/29-3 Mass_mg 0.0032491 0.0023274 0.0025249 0.003 lb/mmBtuO2 6.39E-07 4.50E-07 4.74E-07 0.000 

### Compound: Cobalt Average RunNumber M5/29-1 M5/29-2 M5/29-3 Mass_mg 0.0004046 0.000451 0.0004671 0.000 lb/mmBtuO2 7.96E-08 8.71E-08 8.76E-08 0.000 

### Compound: Filterable Particulate Average RunNumber M5/29-1 M5/29-2 M5/29-3 Mass_mg 19.47 15.43 17.23 17.377 lb/mmBtuO2 3.83E-03 2.98E-03 3.23E-03 0.003 

### Compound: Lead Average RunNumber M5/29-1 M5/29-2 M5/29-3 Mass_mg 0.0026789 0.0026775 0.002646 0.003 lb/mmBtuO2 5.27E-07 5.17E-07 4.96E-07 0.000 

### Compound: Manganese Average RunNumber M5/29-1 M5/29-2 M5/29-3 Mass_mg 0.0094305 0.0031085 0.0043308 0.006 lb/mmBtuO2 1.85E-06 6.00E-07 8.12E-07 0.000 

### Compound: Nickel Average RunNumber M5/29-1 M5/29-2 M5/29-3 Mass_mg 0.0016357 0.0008326 0.002093 0.002 lb/mmBtuO2 3.22E-07 1.61E-07 3.93E-07 0.000 

### Compound: Selenium Average RunNumber M5/29-1 M5/29-2 M5/29-3 Mass_mg 0.0794776 0.0972129 0.0846925 0.087 lb/mmBtuO2 1.56E-05 1.88E-05 1.59E-05 0.000



### Location: Stack Exit - OTM - 27/28 Compound: Filterable PM2.5 Average RunNumber M27/28-1 M27/28-2 M27/28-3 Mass_mg 14.88 30.43 5.74 17.017 lb/mmBtuO2 3.18E-03 6.51E-03 1.23E-03 0.004 

### Compound: Inorganic (Aqueous) Condensible Pa Average RunNumber M27/28-1 M27/28-2 M27/28-3 Mass_mg 137.53 41.03 31.76 70.107 

### Tuesday, January 18, 2011 Page 9 of 18

### Sioux Unit 2
9/7/2010

Process Run Data lb/mmBtuO2 2.94E-02 8.77E-03 6.79E-03 0.015 

### Compound: Organic Condensible Particulate Average RunNumber M27/28-1 M27/28-2 M27/28-3 Mass_mg 2.06 1.69 0.7 1.483 lb/mmBtuO2 4.40E-04 3.61E-04 1.50E-04 0.000 

### Compound: Total PM2.5 Average RunNumber M27/28-1 M27/28-2 M27/28-3 Mass_mg 154.47 73.15 38.2 88.607 lb/mmBtuO2 3.30E-02 1.56E-02 8.16E-03 0.019



### Tuesday, January 18, 2011 Page 10 of 18

### Sioux Unit 2
9/7/2010 Process Run Data



### Run Name Value UOM Comments Target Value 1 Coal Firing Rate 752873 lb/hr 0 

### 2 Coal Firing Rate 757745 lb/hr 0 3 Coal Firing Rate 782533 lb/hr 0 1 Average Heat Input 3108 MMBtu/hr 0 

### 2 Average Heat Input 3110 MMBtu/hr 0 3 Average Heat Input 3136 MMBtu/hr 0 1 Steam Output 27661000 lb steam/hr 0 

### 2 Steam Output 27831000 lb steam/hr 0 3 Steam Output 28031000 lb steam/hr 0 1 Synfuel Firing Rate 0 0 

### 2 Synfuel Firing Rate 0 0 3 Synfuel Firing Rate 0 0 1 Petroleum Coke Firing Rate 0 0 

### 2 Petroleum Coke Firing Rate 0 0 3 Petroleum Coke Firing Rate 0 0 1 Coal Gas Firing Rate 0 0 

### 2 Coal Gas Firing Rate 0 0 3 Coal Gas Firing Rate 0 0 1 Fuel Oil Firing Rate 0 0 

### 2 Fuel Oil Firing Rate 0 0 3 Fuel Oil Firing Rate 0 0 1 Flue Gas Flow Rate 991076 scfm 0 

### 1 Pressure Drop Across FGD (if applicable) 0 in H20 0 1 FGD Scrubber Liquor pH 0 pH 0 

### 1 FGD Scrubber Liquor Flow Rate 0 gal/min 0 1 Sorbent Type and Sorbent Injection Rate (if applicable) 0 lb/hr 0

1 Flue Gas Oxygen Content 0 % 0 

### 1 Flue Gas Carbon Dioxide Content 0 % 0 1 Flue Gas Moisture Content 0 % 0 1 Flue Gas Sampling Point Temperature 0 Deg F 0 

### 1 Flue Gas Pressure 0 atm 0 1 Standard Pressure 0 atm 0 1 Standard Temperature 0 Deg F 0



### Tuesday, January 18, 2011 Page 11 of 18

### Sioux Unit 2
9/7/2010

APCD Run Data

Process Lab Run Data 1 Unit Gross Electrical Output 445 MW 0 

### 1 Unit Net Electric Generation 421 MWh 0

Run Name Value UOM Comments Target Value 1 SELECTIVE NONCATALYTIC REDUCTION FOR NOX 0 0



### 1 OVERFIRE AIR 0 0 1 ELECTROSTATIC PRECIPITATOR 0 0



### Run Name ValueUOM Comments 1 Fuel Higher Heating Value 12173 Btu/lb 

### 2 Fuel Higher Heating Value 12277Btu/lb 3 Fuel Higher Heating Value 12058Btu/lb 1 Fuel Moisture 25.84 % 

### 2 Fuel Moisture 26.05 % 3 Fuel Moisture 26.33 % 1 Fuel Mercury Content 0.066 ppm 2 Fuel Mercury Content 0.043 ppm 

### 3 Fuel Mercury Content 0.057 ppm 1 Fuel Cadmium Content 0.095 ppm 2 Fuel Cadmium Content 0.087 ppm 

### 3 Fuel Cadmium Content 0.103 ppm 1 Ultimate/Proximate Analysis 2 Ultimate/Proximate Analysis 0 3 Ultimate/Proximate Analysis 

### 1 Fuel Nickel Content 6.86 ppm 2 Fuel Nickel Content 6.27 ppm 3 Fuel Nickel Content 5.81 ppm 

### 1 Fuel Arsenic Content 1.42 ppm 2 Fuel Arsenic Content 1.27 ppm 3 Fuel Arsenic Content 1.22 ppm 1 Fuel Chromium Content 8.21 ppm 

### 2 Fuel Chromium Content 6.78 ppm 3 Fuel Chromium Content 7.93 ppm 1 Fuel Beryllium Content 0.419 ppm 

### 2 Fuel Beryllium Content 0.392 ppm 3 Fuel Beryllium Content 0.415 ppm 1 Fuel Lead Content 3.25 ppm 2 Fuel Lead Content 3.14 ppm


### Tuesday, January 18, 2011 Page 12 of 18

### Sioux Unit 2
9/7/2010 3 Fuel Lead Content 3.09 ppm 

### 1 Fuel Manganese Content 17.72 ppm 2 Fuel Manganese Content 19.46 ppm 3 Fuel Manganese Content 14.5 ppm 1 Fuel Chlorine Content 0.096 % 

### 2 Fuel Chlorine Content 0.018 % 3 Fuel Chlorine Content 0.02 % 1 Fuel Fluorine Content 112 ppm 

### 2 Fuel Fluorine Content 87.9 ppm 3 Fuel Fluorine Content 124 ppm

Tuesday, January 18, 2011 Page 13 of 18

### Sioux Unit 2
9/7/2010 Sampling / Stack Data Results Detail


### Location Stack Exit - Method 10 Average Run Number 1 2 3 Test Date 5/4/2010 5/4/2010 5/4/2010 Run Start Time 10:18:00 AM1:37:00 PM 4:44:00 PM Run Finish Time 12:23:00 PM3:50:00 PM 6:51:00 PM Carbon Dioxide, % 15.5 15.6 15.5 15.533 Oxygen, % 4.1 4 4.1 4.067 Fuel Factor 1.08 1.08 1.08 Dry Volumetric Flow Rate, dry scfm 882901 802363 860293848,519.000 F-Factor, dscfm/MMBtu @ %O2 9756 9665 9751 9,724.000 Moisture, % 10.5 18.7 11.6 13.600 Analyzer Make T.E.I T.E.I T.E.I Analyzer Model 48CHL 48CHL 48CHL Analyzer Serial Number 205194 205194 205194205,194.000 Operating Range 500 500 500 500.000 Operating Units ppm ppm ppm No. Readings/Avg. 60 60 60 60.000 Calibration Set 1 1 1 1.000 Calibration Pre Zero Cylinder ID ALM059791ALM059791ALM059791 Calibration Pre Zero Cylinder Instrument Response -0.098 -0.152 -0.127 -0.126 Calibration Pre Zero Cylinder Bias 0.07 0.05 0.06 0.060 Calibration Pre Zero Cylinder Drift 0 0 0 0.000 Calibration Pre High Cylinder ID ALM059699ALM059699ALM059699 Calibration Pre High Cylinder Instrument Response 246.01 245.22 245.573 245.601 Calibration Pre High Cylinder Bias 0.02 -0.3 -0.16 -0.147 Calibration Pre High Cylinder Drift 0 0 0 0.000 Calibration Post Zero Cylinder ID ALM059791ALM059791ALM059791 Calibration Post Zero Cylinder Instrument Response -0.152 -0.127 -0.144 -0.141 Calibration Post Zero Cylinder Bias 0.05 0.06 0.06 0.057 Calibration Post Zero Cylinder Drift 0.02 0.01 0 0.010 Calibration Post High Cylinder ID ALM059699ALM059699ALM059699 Calibration Post High Cylinder Instrument Response 245.22 245.573 246.165 245.653 Calibration Post High Cylinder Bias -0.3 -0.16 0.08 -0.127 Calibration Post High Cylinder Drift 0.32 0.14 0.24 0.233 Cavg 108.85 140.502 129.117 126.156 Cavg Units ppmvd ppmvd ppmvd Cgas 109.2677 141.1364 129.4603 126.621 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



### Tuesday, January 18, 2011 Page 14 of 18

### Sioux Unit 2
9/7/2010
Location Stack Exit - Method 25A Average Run Number 1 2 3 Test Date 5/4/2010 5/4/2010 5/4/2010 Run Start Time 10:18:00 AM 1:37:00 PM 4:44:00 PM Run Finish Time 12:23:00 PM3:50:00 PM 6:51:00 PM Carbon Dioxide, % 15.5 15.6 15.5 15.533 Oxygen, % 4.1 4 4.1 4.067 Fuel Factor 1.08 1.08 1.08 Dry Volumetric Flow Rate, dry scfm 882901 802363 860293848,519.000 F-Factor, dscfm/MMBtu @ %O2 9756 9665 9751 9,724.000 Moisture, % 10.5 18.7 11.6 13.600 Analyzer Make J.U.M. J.U.M. J.U.M. Analyzer Model 3-300A 3-300A 3-300A Analyzer Serial Number 207021 207021 207021207,021.000 Operating Range 100 100 100 100.000 Operating Units ppm ppm ppm No. Readings/Avg. 60 60 60 60.000 Calibration Set 2 2 2 2.000 Calibration Pre Zero Cylinder ID ALM059791ALM059791ALM059791 Calibration Pre Zero Cylinder Instrument Response 0.105 0.481 -0.014 0.191 Calibration Pre Zero Cylinder Bias 0 0.79 -0.25 0.180 Calibration Pre Zero Cylinder Drift 0 0 0 0.000 Calibration Pre High Cylinder ID ALM066847ALM066847ALM066847 Calibration Pre High Cylinder Instrument Response 15.587 15.178 15.124 15.296 Calibration Pre High Cylinder Bias 0 -0.86 -0.97 -0.610 Calibration Pre High Cylinder Drift 0 0 0 0.000 Calibration Post Zero Cylinder ID ALM059791ALM059791ALM059791 Calibration Post Zero Cylinder Instrument Response 0.481 -0.014 -0.035 0.144 Calibration Post Zero Cylinder Bias 0.79 -0.25 -0.29 0.083 Calibration Post Zero Cylinder Drift 0.79 1.04 0.04 0.623 Calibration Post High Cylinder ID ALM066847ALM066847ALM066847 Calibration Post High Cylinder Instrument Response 15.178 15.124 14.992 15.098 Calibration Post High Cylinder Bias -0.86 -0.97 -1.25 -1.027 Calibration Post High Cylinder Drift 0.86 0.11 0.28 0.417 Cavg 0.5 0.5 0.5 0.500 Cavg Units ppmvw ppmvw ppmvw Cgas 0.2314 0.3318 0.594 0.386 Cgas Units ppmvd ppmvd ppmvd Fuel Type Override Override Override Fw 0 0 0 0.000 Fc 0 0 0 0.000 Cgasw 0.2071440405 580040.269760348

5838780.525108569

534228 0.334
Cgasw Units



### Tuesday, January 18, 2011 Page 15 of 18

### Sioux Unit 2
9/7/2010
Location Stack Exit - Method 26A Average Run Number M26A-1 M26A-2 M26A-3 Test Date 4/27/2010 4/27/2010 4/27/2010 Run Start Time 10:44:00 AM9:34:00 AM 9:00:00 AM Run Finish Time 12:37:00 PM11:22:00 AM10:57:00 AM Net Traversing Points 16 16 16 Net Run Time, minutes 64 64 64 Nozzle Diameter, inches 0.19 0.19 0.19 0.190 Pitot Tube Coefficient 0.84 0.84 0.84 0.840 Dry Gas Meter Calibration Factor 0.9898 0.9898 0.9898 0.990 Barometric Pressure, inches of Mercury 29.1 29.1 29.4 29.200 Average Orifice Meter Differential, inches H2O 1.36 1.32 1.32 1.333 Dry Gas Meter Volume Sampled, cubic feet 42.365 41.475 42.820 42.220 Average Dry Gas Meter Temperature, °F 79.28 80.72 89.28 83.093 Dry Gas Meter Volume Sampled, dscf 40.068 39.118 40.165 39.784 Total Moisture Liquid collected, g 182.6 243 227.1 217.567 Volume of Water Vapor, standard cubic feet 8.59 11.44 10.69 10.240 Moisture Content of Stack Gas, % 17.65 22.63 21.02 20.433 Moisture Saturation at Stack Gas Temperature, % 100.00 100.00 100.00 100.000 Dry Mole Fraction 0.8235 0.7737 0.7898 0.796 Carbon Dioxide, % 12.3 14.3 14 13.533 Oxygen, % 4.9 4.6 4.5 4.667 Carbon Monoxide & Nitrogen, % 82.8 81.1 81.5 81.800 Fuel Factor 1.30 1.14 1.17 Dry Molecular Weight, lb/lb-Mole 30.16 30.47 30.42 30.350 Wet Molecular weight, lb/lb-Mole 28.01 27.65 27.81 27.823 Flue Gas Static Pressure, inches of H2O -2 -2 -1.5 -1.833 Absolute Flue Gas Pressure, inches of Mercury 28.95 28.95 29.29 29.063 Average Stack Gas Temperature, °F 312.75 312.38 316.94 314.023 Average Velocity Head, inches of H2O 1.7127835180 41021.659199630

387841.653089703

97407 1.675
Average Stack Gas Velocity, feet/second 91.75 90.86 90.17 90.927 Stack Cross-Sectional Area, square feet 276.117 276.117 276.117 276.117 Dry Volumetric Flow Rate, dry scfm 827,553.3 770,335.0 784,924.4794,270.900 Actual Wet Volumetric Flue Gas Flow Rate, acfm 1,520,024.1 1,505,279.4 1,493,848.21,506,383.9 00 Percent Isokinetic of Sampling Rate, % 106.1 111.3 112.1 109.833 Percent Excess Air, % 28.9 27.4 26.4 27.567 F-Factor, dscfm/MMBtu @ %O2 9939 10032 1004310,004.667 Round Duct Diameter, inches 225 225 225 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



### Tuesday, January 18, 2011 Page 16 of 18

### Sioux Unit 2
9/7/2010
Location Stack Exit - Method 29 Average Run Number M5/29-1 M5/29-2 M5/29-3 Test Date 4/27/2010 4/27/2010 5/3/2010 Run Start Time 11:15:00 AM9:59:00 AM 9:23:00 AM Run Finish Time 3:56:00 PM2:49:00 PM 2:05:00 PM Net Traversing Points 48 48 48 Net Run Time, minutes 240 240 240 Nozzle Diameter, inches 0.191 0.191 0.191 0.191 Pitot Tube Coefficient 0.822 0.822 0.822 0.822 Dry Gas Meter Calibration Factor 1.0085 1.0085 1.0085 1.009 Barometric Pressure, inches of Mercury 29.1 29.2 29.4 29.233 Average Orifice Meter Differential, inches H2O 1.27 1.30 1.33 1.300 Dry Gas Meter Volume Sampled, cubic feet 153.710 154.490 159.275 155.825 Average Dry Gas Meter Temperature, °F 86.06 88.66 95.79 90.170 Dry Gas Meter Volume Sampled, dscf 146.250 146.807 150.444 147.834 Total Moisture Liquid collected, g 405.4 417.7 437.5 420.200 Volume of Water Vapor, standard cubic feet 19.08 19.66 20.59 19.777 Moisture Content of Stack Gas, % 11.54 11.81 12.04 11.797 Moisture Saturation at Stack Gas Temperature, % 100.00 100.00 100.00 100.000 Dry Mole Fraction 0.8846 0.8819 0.8796 0.882 Carbon Dioxide, % 12.3 14.3 14 13.533 Oxygen, % 4.98 4.6 4.5 4.693 Carbon Monoxide & Nitrogen, % 82.72 81.1 81.5 81.773 Fuel Factor 1.29 1.14 1.17 Dry Molecular Weight, lb/lb-Mole 30.17 30.47 30.42 30.353 Wet Molecular weight, lb/lb-Mole 28.77 29.00 28.92 28.897 Flue Gas Static Pressure, inches of H2O -2 -1.5 -1.5 -1.667 Absolute Flue Gas Pressure, inches of Mercury 28.95 29.09 29.29 29.110 Average Stack Gas Temperature, °F 314.31 314.96 317.85 315.707 Average Velocity Head, inches of H2O 1.6169039820 33231.656274528

365741.700587713

03421 1.658
Average Stack Gas Velocity, feet/second 86.16 86.68 87.82 86.887 Stack Cross-Sectional Area, square feet 276.117 276.117 276.117 276.117 Dry Volumetric Flow Rate, dry scfm 833,111.4 838,917.8 850,391.5840,806.900 Actual Wet Volumetric Flue Gas Flow Rate, acfm 1,427,414.4 1,436,029.3 1,454,915.71,439,453.1 33 Percent Isokinetic of Sampling Rate, % 101.5 101.2 102.3 101.667 Percent Excess Air, % 29.5 27.4 26.4 27.767 F-Factor, dscfm/MMBtu @ %O2 9939 10032 1004310,004.667 Round Duct Diameter, inches 225 225 225 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



### Tuesday, January 18, 2011 Page 17 of 18

### Sioux Unit 2
9/7/2010
Location Stack Exit - OTM - 27/28 Average Run Number M27/28-1 M27/28-2 M27/28-3 Test Date 4/27/2010 4/28/2010 5/2/2010 Run Start Time 10:44:00 AM9:10:00 AM 8:34:00 AM Run Finish Time 5:50:42 PM4:19:18 PM 3:17:54 PM Net Traversing Points 48 48 48 Net Run Time, minutes 383.7 387.3 388.9 Nozzle Diameter, inches 0.15 0.15 0.15 0.150 Pitot Tube Coefficient 0.84 0.84 0.84 0.840 Dry Gas Meter Calibration Factor 0.9898 0.9898 0.9898 0.990 Barometric Pressure, inches of Mercury 29.1 29.2 29.4 29.233 Average Orifice Meter Differential, inches H2O 0.40 0.40 0.40 0.400 Dry Gas Meter Volume Sampled, cubic feet 139.410 141.310 142.925 141.215 Average Dry Gas Meter Temperature, °F 78.82 85.28 92.90 85.667 Dry Gas Meter Volume Sampled, dscf 131.644 132.310 132.881 132.278 Total Moisture Liquid collected, g 350.5 362.5 371.8 361.600 Volume of Water Vapor, standard cubic feet 16.50 17.06 17.50 17.020 Moisture Content of Stack Gas, % 11.14 11.42 11.64 11.400 Moisture Saturation at Stack Gas Temperature, % 100.00 100.00 100.00 100.000 Dry Mole Fraction 0.8886 0.8858 0.8836 0.886 Carbon Dioxide, % 14.3 14 14.2 14.167 Oxygen, % 4.6 4.6 4.6 4.600 Carbon Monoxide & Nitrogen, % 81.1 81.4 81.2 81.233 Fuel Factor 1.14 1.16 1.15 Dry Molecular Weight, lb/lb-Mole 30.47 30.42 30.46 30.450 Wet Molecular weight, lb/lb-Mole 29.08 29.00 29.01 29.030 Flue Gas Static Pressure, inches of H2O -2 -1.5 -1.5 -1.667 Absolute Flue Gas Pressure, inches of Mercury 28.95 29.09 29.29 29.110 Average Stack Gas Temperature, °F 315.96 316.94 320.02 317.640 Average Velocity Head, inches of H2O 1.5956943437 59791.622265175

954871.630342948

33274 1.616
Average Stack Gas Velocity, feet/second 87.09 87.78 87.85 87.573 Stack Cross-Sectional Area, square feet 276.117 276.117 276.117 276.117 Dry Volumetric Flow Rate, dry scfm 844,112.9 851,146.3 852,173.1849,144.100 Actual Wet Volumetric Flue Gas Flow Rate, acfm 1,442,821.8 1,454,253.0 1,455,412.71,450,829.1 67 Percent Isokinetic of Sampling Rate, % 91.5 90.3 90.2 90.667 Percent Excess Air, % 27.4 27.2 27.3 27.300 F-Factor, dscfm/MMBtu @ %O2 9939 10009 10043 9,997.000 Round Duct Diameter, inches 225 225 225 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



### Tuesday, January 18, 2011 Page 18 of 18