### Name: James Kipp

Title: Plant Manager Company: Dynegy Midwest Generation Sign Date: 9/3/2010 Name: Scott R. Miller Title: Operations Manager Company: TRC Companies, Inc. Sign Date: 9/3/2010 Permitted Facility Representative / Date Testing Company Representative / Date



## Utility Boiler MACT ICR - Vermilion Power Station Units 1 & 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, February 15, 2011 Page 1 of 12

### Utility Boiler MACT ICR - Vermilion Power Station Units 1 & 2 9/3/2010 Facility Information: Vermilion Power Station County Rd 2150 N. 10188 E 2150 N Oakwood IL 61858 Contact: Rick Diericx Phone: 618-206-5927 Fax: 618-206-5891 Email: Aric.diericx@dynegy.com Testing Company: TRC Companies, Inc. 1058 N Dupage Avenue

Lombard IL 60148 Contact: Scott R. Miller Phone: 630-953-9046 Fax: 630-953-9114 Email: smiller@trcsolutions.com

Air Permit Number: 897 Permitted Source ID/Name: 1_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: Unit 1 has a rated generating capacity of 84 MW gross and Unit 2 has a rated capacity of 113 MW gross. Each are Combustion Engineering tangentially-fired boilers driving steam turbine generator units. Unit 1 burns PRB coal to reduce SO2 emissions and is equipped with rotating over-fire air to reduce NOx emissions. Unit 2 burns PRB coal to reduce SO2 emissions and is equipped with over-fire air and low NOx burners to reduce NOx emissions. Each unit has a dedicated electrostatic precipitator (ESP) to control particulate emissions. Exhaust from each ESP is combined and treated by activated carbon injection followed by a fabric filter bag-house and then vented through a common stack. Industry/SCC/NAIS 221112

Sampling Location Information:

Test Parameter Information: AFS #: 1718300114 FRS #: 110021308253

SCC / Description 10100222 External Combustion Boilers - Electric Generation - Bituminous/Subbituminous Coal - Pulverized Coal: Dry Bottom (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 Exit 198 1584 396 4 0 3 0 0

Target Parameter Test Method Number of

Test Runs Test Run

Duration Sample

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

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



### Tuesday, February 15, 2011 Page 2 of 12

### Utility Boiler MACT ICR - Vermilion Power Station Units 1 & 2 9/3/2010

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.

Organic Condensible Particulate OTM - 27/28 3 240 0 Stack Exit

Total Particulate OTM - 27/28 3 240 0 Stack Exit Filterable Particulate OTM - 27/28 3 240 0 Stack Exit Selenium 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 Antimony Method 29 3 240 0 Stack Exit Nickel Method 29 3 240 0 Stack Exit Cobalt Method 29 3 240 0 Stack Exit Manganese Method 29 3 240 0 Stack Exit



### Tuesday, February 15, 2011 Page 3 of 12

### Utility Boiler MACT ICR - Vermilion Power Station Units 1 & 2 9/3/2010 Sampling / Stack Data Results Summary


### Location Stack Exit - Method 29 Average Run Number 1 2 3 Test Date 8/22/2010 8/23/2010 8/23/2010 Run Start Time 3:05:00 PM 9:12:00 AM 3:50:00 PM

Run Finish Time 7:26:00 PM 1:43:00 PM 8:35:00 PM Net Run Time, minutes 240 240 240 Dry Gas Meter Volume Sampled, dscf 118.452 117.395 116.554 117.467 Moisture Content of Stack Gas, % 11.50 11.99 12.20 11.897 Moisture Saturation at Stack Gas Temperature, % 100.00 100.00 100.00 100.000 Carbon Dioxide, % 12 12 12 12.000 Oxygen, % 6 6 6 6.000 Average Stack Gas Temperature, °F 348.00 338.63 345.10 343.910 Dry Volumetric Flow Rate, dry scfm 478,074.8 473,326.7 466,117.5 472,506.333 Actual Wet Volumetric Flue Gas Flow Rate, acfm 838,151.2 823,653.9 827,759.3 829,854.800 Percent Isokinetic of Sampling Rate, % 101.2 101.3 102.1 101.533 F-Factor, dscfm/MMBtu @ %O2 9510 9565 9583 9,552.667 Fw 0 0 0 0.000 Fc 0 0 0 0.000



### Tuesday, February 15, 2011 Page 4 of 12

### Utility Boiler MACT ICR - Vermilion Power Station Units 1 & 2 9/3/2010 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



### Tuesday, February 15, 2011 Page 5 of 12

### Utility Boiler MACT ICR - Vermilion Power Station Units 1 & 2 9/3/2010 Emissions Summary


### Location: Stack Exit - Method 29 Compound: Antimony Average RunNumber 1 2 3 Mass_mg 0.002 0.00227 0.00541 0.003 lb/mmBtuO2 4.97E-07 5.72E-07 1.38E-06 0.000 

### Compound: Arsenic Average RunNumber 1 2 3 Mass_mg 0.002 0.002 0.00462 0.003 lb/mmBtuO2 4.97E-07 5.04E-07 1.17E-06 0.000 

### Compound: Beryllium Average RunNumber 1 2 3 Mass_mg 0.00022 0.00013 0.00008 0.000 lb/mmBtuO2 5.46E-08 3.28E-08 2.03E-08 0.000 

### Compound: Cadmium Average RunNumber 1 2 3 Mass_mg 0.00049 0.00033 0.00035 0.000 lb/mmBtuO2 1.22E-07 8.31E-08 8.90E-08 0.000 

### Compound: Chromium Average RunNumber 1 2 3 Mass_mg 0.00873 0.0154 0.00204 0.009 lb/mmBtuO2 2.17E-06 3.88E-06 5.19E-07 0.000 

### Compound: Cobalt Average RunNumber 1 2 3 Mass_mg 0.00122 0.00088 0.00219 0.001 lb/mmBtuO2 3.03E-07 2.22E-07 5.57E-07 0.000 

### Compound: Lead Average RunNumber 1 2 3 Mass_mg 0.01978 0.01412 0.0125 0.015 lb/mmBtuO2 4.91E-06 3.56E-06 3.18E-06 0.000 

### Compound: Manganese Average RunNumber 1 2 3 Mass_mg 0.00816 0.0097 0.00406 0.007 lb/mmBtuO2 2.03E-06 2.44E-06 1.03E-06 0.000 

### Compound: Nickel Average


### Tuesday, February 15, 2011 Page 6 of 12

### Utility Boiler MACT ICR - Vermilion Power Station Units 1 & 2 9/3/2010

Process Run Data RunNumber 1 2 3 Mass_mg 0.01346 0.03269 0.00623 0.017 lb/mmBtuO2 3.34E-06 8.24E-06 1.58E-06 0.000 

### Compound: Selenium Average RunNumber 1 2 3 Mass_mg 0.00673 0.00652 0.01317 0.009 lb/mmBtuO2 1.67E-06 1.64E-06 3.35E-06 0.000


### Location: Stack Exit - OTM - 27/28 Compound: Filterable Particulate Average RunNumber 1 2 3 Mass_mg 6 5 5.6 5.533 lb/mmBtuO2 1.42E-03 1.21E-03 1.38E-03 0.001 

### Compound: Filterable PM2.5 Average RunNumber 1 2 3 Mass_mg 2.9 1.9 2.6 2.467 lb/mmBtuO2 6.88E-04 4.58E-04 6.40E-04 0.001 

### Compound: Inorganic (Aqueous) Condensible Pa Average RunNumber 1 2 3 Mass_mg 24.8 25.6 15.2 21.867 lb/mmBtuO2 5.89E-03 6.17E-03 3.74E-03 0.005 

### Compound: Organic Condensible Particulate Average RunNumber 1 2 3 Mass_mg 2.6 3.7 2.1 2.800 lb/mmBtuO2 6.17E-04 8.92E-04 5.17E-04 0.001 

### Compound: Total Particulate Average RunNumber 1 2 3 Mass_mg 33.4 34.3 22.9 30.200 lb/mmBtuO2 7.93E-03 8.27E-03 5.64E-03 0.007 

### Compound: Total PM2.5 Average RunNumber 1 2 3 Mass_mg 30.3 31.2 19.9 27.133 lb/mmBtuO2 7.19E-03 7.52E-03 4.90E-03 0.007



### Tuesday, February 15, 2011 Page 7 of 12

### Utility Boiler MACT ICR - Vermilion Power Station Units 1 & 2 9/3/2010 Process Run Data



### Run Name Value UOM Comments Target Value 1 Unit 1 & 2 Combined Heat Input 1970.3 Million Btus/hr Collected during run 1 of M29 and OTM 27/28 0

2 Unit 1 & 2 Combined Heat Input 1996.9 Million Btus/hr Collected during run 2 of M29 and OTM 27/28 0



### 3 Unit 1 & 2 Combined Heat Input 1992.5 Million Btus/hr Collected during run 3 of M29 and OTM 27/28 0

1 Unit 2 Baghouse Pressure Drop 5.13 in wc Collected during run 1 of M29 and OTM 27/28 0

2 Unit 2 Baghouse Pressure Drop 5.01 in wc Collected during run 2 of M29 and OTM 27/28 0

3 Unit 2 Baghouse Pressure Drop 5.12 in wc Collected during run 3 of M29 and OTM 27/28 0



### 1 Unit 1 Coal Feed Rate 53 ton/hr Collected during run 1 of M29 and OTM 27/28 0

2 Unit 1 Coal Feed Rate 53 ton/hr Collected during run 2 of M29 and OTM 27/28 0

3 Unit 1 Coal Feed Rate 53 ton/hr Collected during run 3 of M29 and OTM 27/28 0

1 Unit 2 Steam Output 790.34 Klb/hr Collected during run 1 of M29 and OTM 27/28 0



### 2 Unit 2 Steam Output 795.46 Klb/hr Collected during run 2 of M29 and OTM 27/28 0

3 Unit 2 Steam Output 792.61 Klb/hr Collected during run 3 of M29 and OTM 27/28 0

1 Unit 1 Steam Output 523.72 Klb/hr Collected during run 1 of M29 and OTM 27/28 0

2 Unit 1 Steam Output 562.01 Klb/hr Collected during run 2 of M29 and OTM 27/28 0



### 3 Unit 1 Steam Output 562.85 Klb/hr Collected during run 3 of M29 and OTM 27/28 0

Tuesday, February 15, 2011 Page 8 of 12

### Utility Boiler MACT ICR - Vermilion Power Station Units 1 & 2 9/3/2010 1 Unit 1 & 2 Combined Stack CO2 12.5 % Collected during run 1 of M29 and OTM 27/28 0

2 Unit 1 & 2 Combined Stack CO2 12.5 % Collected during run 2 of M29 and OTM 27/28 0



### 3 Unit 1 & 2 Combined Stack CO2 12.5 % Collected during run 3 of M29 and OTM 27/28 0

1 Unit 1 & 2 Combined Stack Flow 3E+07 scfh Collected during run 1 of M29 and OTM 27/28 0

2 Unit 1 & 2 Combined Stack Flow 3E+07 scfh Collected during run 2 of M29 and OTM 27/28 0

3 Unit 1 & 2 Combined Stack Flow 3E+07 scfh Collected during run 3 of M29 and OTM 27/28 0



### 1 Unit 2 Gross Load 108.99 MW Collected during run 1 of M29 and OTM 27/28 0

2 Unit 2 Gross Load 108.9 MW Collected during run 2 of M29 and OTM 27/28 0

3 Unit 2 Gross Load 109.29 MW Collected during run 3 of M29 and OTM 27/28 0

1 Unit 2 Net Load 97.23 MW Collected during run 1 of M29 and OTM 27/28 0



### 2 Unit 2 Net Load 99.11 MW Collected during run 2 of M29 and OTM 27/28 0

3 Unit 2 Net Load 99.53 MW Collected during run 3 of M29 and OTM 27/28 0

1 Unit 1 Gross Load 69.95 MW Collected during run 1 of M29 and OTM 27/28 0

2 Unit 1 Gross Load 73.91 MW Collected during run 2 of M29 and OTM 27/28 0

3 Unit 1 Gross Load 73.94 MW Collected during run 3 of M29 and OTM 27/28 0



### 1 Unit 1 Net Load 64.27 MW Collected during run 1 of M29 and OTM 27/28 0

Tuesday, February 15, 2011 Page 9 of 12

### Utility Boiler MACT ICR - Vermilion Power Station Units 1 & 2 9/3/2010

APCD Run Data

Process Lab Run Data 2 Unit 1 Net Load 65.99 MW Collected during run 2 of M29 and OTM 27/28 0

3 Unit 1 Net Load 66.08 MW Collected during run 3 of M29 and OTM 27/28 0



### 1 Unit 2 Coal Feed Rate 68 ton/hr Collected during run 1 of M29 and OTM 27/28 0

2 Unit 2 Coal Feed Rate 68 ton/hr Collected during run 2 of M29 and OTM 27/28 0

3 Unit 2 Coal Feed Rate 68 ton/hr Collected during run 3 of M29 and OTM 27/28 0

1 Unit 1 Baghouse Pressure Drop 5.13 in wc Collected during run 1 of M29 and OTM 27/28 0



### 2 Unit 1 Baghouse Pressure Drop 5.01 in wc Collected during run 2 of M29 and OTM 27/28 0

3 Unit 1 Baghouse Pressure Drop 5.12 in wc Collected during run 3 of M29 and OTM 27/28 0

1 ACI Rate 0.89 lb/macf 0 

### 2 ACI Rate 0.88 lb/macf 0 3 ACI Rate 0.89 lb/macf 0

Run Name Value UOM Comments Target Value 

### 1 OVERFIRE AIR 0 0 1 LOW NOX BURNERS 0 0 1 ELECTROSTATIC PRECIPITATOR 0 0 

### 1 ACTIVATED CARBON ADSORPTION 0 0 1 BAGHOUSE 0 0

Tuesday, February 15, 2011 Page 10 of 12

### Utility Boiler MACT ICR - Vermilion Power Station Units 1 & 2 9/3/2010 Sampling / Stack Data Results Detail


### Location Stack Exit - Method 29 Average Run Number 1 2 3 Test Date 8/22/2010 8/23/2010 8/23/2010 Run Start Time 3:05:00 PM 9:12:00 AM 3:50:00 PM Run Finish Time 7:26:00 PM 1:43:00 PM 8:35:00 PM Net Traversing Points 48 48 48 Net Run Time, minutes 240 240 240 Nozzle Diameter, inches 0.2 0.2 0.2 0.200 Pitot Tube Coefficient 0.84 0.84 0.84 0.840 Dry Gas Meter Calibration Factor 0.9994 0.9994 0.9994 0.999 Barometric Pressure, inches of Mercury 29.54 29.59 29.29 29.473 Average Orifice Meter Differential, inches H2O 0.83 0.81 0.80 0.813 Dry Gas Meter Volume Sampled, cubic feet 124.238 122.059 123.149 123.149 Average Dry Gas Meter Temperature, °F 87.56 83.69 86.90 86.050 Dry Gas Meter Volume Sampled, dscf 118.452 117.395 116.554 117.467 Total Moisture Liquid collected, g 327 340 344 337.000 Volume of Water Vapor, standard cubic feet 15.39 16.00 16.19 15.860 Moisture Content of Stack Gas, % 11.50 11.99 12.20 11.897 Moisture Saturation at Stack Gas Temperature, % 100.00 100.00 100.00 100.000 Dry Mole Fraction 0.885 0.8801 0.878 0.881 Carbon Dioxide, % 12 12 12 12.000 Oxygen, % 6 6 6 6.000 Carbon Monoxide & Nitrogen, % 82 82 82 82.000 Fuel Factor 1.24 1.24 1.24 Dry Molecular Weight, lb/lb-Mole 30.16 30.16 30.16 30.160 Wet Molecular weight, lb/lb-Mole 28.76 28.70 28.68 28.713 Flue Gas Static Pressure, inches of H2O -0.43 -0.48 -0.46 -0.457 Absolute Flue Gas Pressure, inches of Mercury 29.51 29.55 29.26 29.440 Average Stack Gas Temperature, °F 348.00 338.63 345.10 343.910 Average Velocity Head, inches of H2O 0.8693702713 30507 0.848796028

237347 0.841399287

980376 0.853 Average Stack Gas Velocity, feet/second 65.33 64.20 64.52 64.683 Stack Cross-Sectional Area, square feet 213.825 213.825 213.825 213.825 Dry Volumetric Flow Rate, dry scfm 478,074.8 473,326.7 466,117.5 472,506.333 Actual Wet Volumetric Flue Gas Flow Rate, acfm 838,151.2 823,653.9 827,759.3 829,854.800 Percent Isokinetic of Sampling Rate, % 101.2 101.3 102.1 101.533 Percent Excess Air, % 38.3 38.3 38.3 38.300 F-Factor, dscfm/MMBtu @ %O2 9510 9565 9583 9,552.667 Round Duct Diameter, inches 198 198 198 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, February 15, 2011 Page 11 of 12

### Utility Boiler MACT ICR - Vermilion Power Station Units 1 & 2 9/3/2010 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



### Tuesday, February 15, 2011 Page 12 of 12