### Name:

Title: Company: Sign Date: Name: Brian Durkop Title: Vice President Company:EMSI Sign Date: 9/4/2010 Permitted Facility Representative / Date Testing Company Representative / Date 

## Dynegy Danskammer Unit 3 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.

Friday, February 11, 2011 Page 1 of 18

### Dynegy Danskammer Unit 3

Facility Information: Dynegy Danskammer Generating Station 994 River Road

Newburgh NY12550 Contact:Andrew Matura Phone:845-563-4923 Fax: 845-563-4992 Email: andrew.d.matura@dynegy.com Testing Company: Eagle Mountain Scientific, Inc. 8905 Autumn Oaks Drive Suite 2 Rockford MN55373 Contact:Brian Durkop Phone:763-477-4462 Fax: 763-477-5991 Email:bdurkop@eagle-msi.com

Air Permit Number: 3-3346-00011/00002 Permitted Source ID/Name: Unit 3 3 Permitted Maximum Process Rate: NA Max. Normal Operation Process Rate: 150 MW Target Process Test Rate 135 MW

Description of the source (including control equipment). Please see the attachments for source or process flow diagram: The Dynegy Danskammer Generating Station Unit 3 is a pulverized bituminous coal fired boiler. The boiler has a load of 150 Gross Megawatts (GMW). The unit is equipped with LNCFS – II Low NOx Burner Technology. Particulate emissions are controlled by electrostatic precipitators.

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. Industry/SCC/NAIS221112

Sampling Location Information:

Test Parameter Information: AFS #:3607100002 FRS #:110041167108

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 119.5 888 1440 4 0 12 0 0

Target Parameter Test Method Number of

Test Runs Test Run

Duration Sample

Points Comments Location Carbon Monoxide Method 10 3 180 0 Stack Exit Formaldehyde Method 0011 3 120 0 Stack Exit Total organic compounds

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

Sulfur Dioxide Method 6C 3 180 0 Stack Exit Nitrogen oxides (NOx) Method 7E 3 180 0 Stack Exit



### Friday, February 11, 2011 Page 2 of 18

### Dynegy Danskammer Unit 3

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. None



### Friday, February 11, 2011 Page 3 of 18

### Dynegy Danskammer Unit 3

Sampling / Stack Data Results Summary


### LocationStack Exit - Method 0011 Average Run Number 1 2 3 Test Date 7/8/2010 7/8/2010 7/8/2010 Run Start Time 9:09:00 AM 12:46:00 PM 3:43:00 PM

Run Finish Time 11:15:00 AM2:57:00 PM 5:53:00 PM Net Run Time, minutes 120 120 120 Dry Gas Meter Volume Sampled, dscf 85.712 94.027 89.692 89.810 Moisture Content of Stack Gas, % 8.10 7.90 7.76 7.920 Moisture Saturation at Stack Gas Temperature, % 100.00 100.00 100.00 100.000 Carbon Dioxide, % 12.9 12.9 12.9 12.900 Oxygen, % 6.1 6.1 6.2 6.133 Average Stack Gas Temperature, °F 279.28 280.25 281.35 280.293 Dry Volumetric Flow Rate, dry scfm 298,103.5 332,194.6 317,441.2315,913.100 Actual Wet Volumetric Flue Gas Flow Rate, acfm 456,620.3 508,913.7 486,295.3483,943.100 Percent Isokinetic of Sampling Rate, % 102.2 100.6 100.4 101.067 F-Factor, dscfm/MMBtu @ %O2 9798 9809 9823 9,810.000 Fw 0 0 0 0.000 Fc 0 0 0 0.000



### LocationStack Exit - Method 10 Average Run Number 1 2 3 Test Date 7/8/2010 7/8/2010 7/8/2010 Run Start Time 9:05:00 AM 12:45:00 PM 3:42:00 PM

Run Finish Time 11:05:00 AM2:45:00 PM 5:42:00 PM Carbon Dioxide, % 12.9 12.9 12.9 12.900 Oxygen, % 6.2 6.2 6.2 6.200 Dry Volumetric Flow Rate, dry scfm 297707 331831 317387315,641.667 F-Factor, dscfm/MMBtu @ %O2 9798 9809 9823 9,810.000 Moisture, % 9 8.8 8.5 8.767 Fuel Type Override Override Override Fw 0 0 0 0.000 Fc 0 0 0 0.000



### Friday, February 11, 2011 Page 4 of 18

### Dynegy Danskammer Unit 3

LocationStack Exit - Method 25A Average Run Number 1 2 3 Test Date 7/8/2010 7/8/2010 7/8/2010 Run Start Time 9:05:00 AM 12:45:00 PM 3:42:00 PM

Run Finish Time 11:05:00 AM2:45:00 PM 5:42:00 PM Carbon Dioxide, % 12.9 12.9 12.9 12.900 Oxygen, % 6.2 6.2 6.2 6.200 Dry Volumetric Flow Rate, dry scfm 397707 331831 317387348,975.000 F-Factor, dscfm/MMBtu @ %O2 9798 9809 9823 9,810.000 Moisture, % 9 8.8 8.5 8.767 Fuel Type Override Override Override Fw 0 0 0 0.000 Fc 0 0 0 0.000



### LocationStack Exit - Method 6C Average Run Number 1 2 3 Test Date 7/8/2010 7/8/2010 7/8/2010 Run Start Time 9:05:00 AM 12:45:00 PM 3:42:00 PM

Run Finish Time 11:05:00 AM2:45:00 PM 5:42:00 PM Carbon Dioxide, % 12.9 12.9 12.9 12.900 Oxygen, % 6.2 6.2 6.2 6.200 Dry Volumetric Flow Rate, dry scfm 397707 331831 317387348,975.000 F-Factor, dscfm/MMBtu @ %O2 9798 9809 9823 9,810.000 Moisture, % 9 8.8 8.5 8.767 Fuel Type Override Override Override Fw 0 0 0 0.000 Fc 0 0 0 0.000



### Friday, February 11, 2011 Page 5 of 18

### Dynegy Danskammer Unit 3

LocationStack Exit - Method 7E Average Run Number 1 2 3 Test Date 7/8/2010 7/8/2010 7/8/2010 Run Start Time 9:05:00 AM 12:45:00 PM 3:42:00 PM

Run Finish Time 11:05:00 AM2:45:00 PM 5:42:00 PM Carbon Dioxide, % 12.9 12.9 12.9 12.900 Oxygen, % 6.2 6.2 6.2 6.200 Dry Volumetric Flow Rate, dry scfm 297707 331831 317387315,641.667 F-Factor, dscfm/MMBtu @ %O2 9798 9809 9823 9,810.000 Moisture, % 9 8.8 8.5 8.767 Fuel Type Override Override Override Fw 0 0 0 0.000 Fc 0 0 0 0.000



### LocationStack Exit - SW0010 Average Run Number 1 2 3 Test Date 7/8/2010 7/8/2010 7/8/2010 Run Start Time 9:09:00 AM 12:46:00 PM 3:44:00 PM

Run Finish Time 11:15:00 AM2:57:00 PM 5:53:00 PM Net Run Time, minutes 120 120 120 Dry Gas Meter Volume Sampled, dscf 80.557 89.577 85.414 85.183 Moisture Content of Stack Gas, % 8.99 8.78 8.45 8.740 Moisture Saturation at Stack Gas Temperature, % 100.00 100.00 100.00 100.000 Carbon Dioxide, % 12.9 12.9 12.9 12.900 Oxygen, % 6.1 6.1 6.2 6.133 Average Stack Gas Temperature, °F 279.28 280.25 281.35 280.293 Dry Volumetric Flow Rate, dry scfm 295,820.8 329,685.2 315,369.4313,625.133 Actual Wet Volumetric Flue Gas Flow Rate, acfm 457,555.0 509,941.8 486,762.6484,753.133 Percent Isokinetic of Sampling Rate, % 97.8 97.6 97.3 97.567 F-Factor, dscfm/MMBtu @ %O2 9798 9809 9823 9,810.000 Fw 0 0 0 0.000 Fc 0 0 0 0.000



### Friday, February 11, 2011 Page 6 of 18

### Dynegy Danskammer Unit 3

Emissions Summary

Process Run Data 

### Location: Stack Exit - Method 0011 Compound: Formaldehyde Average RunNumber 1 2 3 Mass_mg 0.09 0.14 0.094 0.108 lb/mmBtuO2 3.20E-05 4.55E-05 3.23E-05 0.000 ppm 2.97E-02 4.21E-02 2.96E-02 0.034 ppm@7%O2 2.79E-02 3.95E-02 2.80E-02 0.032



### Location: Stack Exit - Method 10 Compound: Carbon Monoxide Average Run 1 2 3 lb/mmBtuO2 3.29E-01 2.63E-01 2.22E-01 0.271 ppm 3.25E+02 2.59E+02 2.19E+02 267.667 ppm@7%O2 3.07E+02 2.45E+02 2.07E+02 253.000



### Location: Stack Exit - Method 25A Compound: Total organic compounds (TOC) as Average Run 1 2 3 lb/mmBtuO2 0.00E+00 0.00E+00 0.00E+00 0.000 ppm 0.00E+00 0.00E+00 0.00E+00 0.000 ppm@7%O2 0.00E+00 0.00E+00 0.00E+00 0.000


### Location: Stack Exit - Method 6C Compound: Sulfur Dioxide Average Run 1 2 3 lb/mmBtuO2 9.70E-01 9.60E-01 9.68E-01 0.966 ppm 4.19E+02 4.14E+02 4.17E+02 416.667 ppm@7%O2 3.96E+02 3.91E+02 3.94E+02 393.667


### Location: Stack Exit - Method 7E Compound: Nitrogen oxides (NOx) Average Run 1 2 3 lb/mmBtuO2 2.66E-01 2.72E-01 2.72E-01 0.270 ppm 1.60E+02 1.63E+02 1.63E+02 162.000 ppm@7%O2 1.51E+02 1.54E+02 1.54E+02 153.000



### Friday, February 11, 2011 Page 7 of 18

### Dynegy Danskammer Unit 3

Process Run Data



### Run Name Value UOM Comments Target Value 1 Average Heat Input 0 MMBtu/hr 0 

### 10Average Heat Input 0 MMBtu/hr 0 11Average Heat Input 0 MMBtu/hr 0 12Average Heat Input 0 MMBtu/hr 0 

### 2 Average Heat Input 0 MMBtu/hr 0 3 Average Heat Input 0 MMBtu/hr 0 4 Average Heat Input 1401 MMBtu/hr 0 

### 5 Average Heat Input 1404.5 MMBtu/hr 0 6 Average Heat Input 1400.1 MMBtu/hr 0 7 Average Heat Input 0 MMBtu/hr 0 

### 8 Average Heat Input 0 MMBtu/hr 0 9 Average Heat Input 0 MMBtu/hr 0 1 Fuel Input 0 lbs/hr 

### 10Fuel Input 0 lbs/hr 11Fuel Input 0 lbs/hr 12Fuel Input 0 lbs/hr 

### 2 Fuel Input 0 lbs/hr 3 Fuel Input 0 lbs/hr 4 Fuel Input 52.95 lbs/hr 

### 5 Fuel Input 52.99 lbs/hr 6 Fuel Input 52.9 lbs/hr 7 Fuel Input 0 lbs/hr 

### 8 Fuel Input 0 lbs/hr 9 Fuel Input 0 lbs/hr 

### 1 Unit Gross Electrical Output 0 Mwe Run 1 0 10Unit Gross Electrical Output 0 Mwe Run 3 0 11Unit Gross Electrical Output 0 Mwe Run 2 0 

### 12Unit Gross Electrical Output 0 Mwe Run 1 0 2 Unit Gross Electrical Output 0 Mwe Run 2 0 3 Unit Gross Electrical Output 0 Mwe Run 3 0 

### 4 Unit Gross Electrical Output 145.83 Mwe Run 1 0 5 Unit Gross Electrical Output 145.58 Mwe Run 2 0 6 Unit Gross Electrical Output 145.68 Mwe Run 3 0



### Friday, February 11, 2011 Page 8 of 18

### Dynegy Danskammer Unit 3

APCD Run Data 7 Unit Gross Electrical Output 0 Mwe Run 1 0 

### 8 Unit Gross Electrical Output 0 Mwe Run 2 0 9 Unit Gross Electrical Output 0 Mwe Run 3 0 1 Opacity 0 % Dioxin/Furan Organic HAP Group 0

10Opacity 0 % Acid Gas HAP Group 0



### 11Opacity 0 % Acid Gas HAP Group 0

12Opacity 0 % Acid Gas HAP Group 0



### 2 Opacity 0 % Dioxin/Furan Organic HAP Group 0

3 Opacity 0 % Dioxin/Furan Organic HAP Group 0

4 Opacity 6.36 % Non-Dioxin Organic HAP Group 0

5 Opacity 6.39 % Non-Dioxin Organic HAP Group 0



### 6 Opacity 6.37 % Non-Dioxin Organic HAP Group 0

7 Opacity 0 % Mercury and Metallic HAP Group 0

8 Opacity 0 % Mercury and Metallic HAP Group 0

9 Opacity 0 % Mercury and Metallic HAP Group 0



### 1 Heat Input 0 Million Btus/million BTU using CO2 0

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

### 10ELECTROSTATIC PRECIPITATOR 0 kV 11ELECTROSTATIC PRECIPITATOR 0 kV 12ELECTROSTATIC PRECIPITATOR 0 kV



### Friday, February 11, 2011 Page 9 of 18

### Dynegy Danskammer Unit 3

Process Lab Run Data 2 ELECTROSTATIC PRECIPITATOR 0 kV 

### 3 ELECTROSTATIC PRECIPITATOR 0 kV 4 ELECTROSTATIC PRECIPITATOR 0 kV 5 ELECTROSTATIC PRECIPITATOR 0 kV 

### 6 ELECTROSTATIC PRECIPITATOR 0 kV 7 ELECTROSTATIC PRECIPITATOR 0 kV 8 ELECTROSTATIC PRECIPITATOR 0 kV 

### 9 ELECTROSTATIC PRECIPITATOR 0 kV 1 LNCFS-II Low Nox Burners 0 0 10LNCFS-II Low Nox Burners 0 0 

### 11LNCFS-II Low Nox Burners 0 0 12LNCFS-II Low Nox Burners 0 0 2 LNCFS-II Low Nox Burners 0 0 

### 3 LNCFS-II Low Nox Burners 0 0 4 LNCFS-II Low Nox Burners 0 0 5 LNCFS-II Low Nox Burners 0 0 

### 6 LNCFS-II Low Nox Burners 0 0 7 LNCFS-II Low Nox Burners 0 0 8 LNCFS-II Low Nox Burners 0 0 

### 9 LNCFS-II Low Nox Burners 0 0 1 0 0 

### 10 0 0 11 0 0 12 0 0 

### 2 0 0 3 0 0 4 0 0 

### 5 0 0 6 0 0 7 0 0 

### 8 0 0 9 0 0

Run Name ValueUOM Comments 1 Moisture As Received 0 %



### Friday, February 11, 2011 Page 10 of 18

### Dynegy Danskammer Unit 3

2 Moisture As Received 0 % 

### 3 Moisture As Received 0 % 1 Ash As Received 0 % 2 Ash As Received 0 % 3 Ash As Received 0 % 

### 1 Carbon As Received 0 % 2 Carbon As Received 0 % 3 Carbon As Received 0 % 

### 1 Hydrogen (Excl. H in Moisture) As Received 0 % 2 Hydrogen (Excl. H in Moisture) As Received 0 % 3 Hydrogen (Excl. H in Moisture) As Received 0 % 1 Hydrogen (Incl. H in Moisture) As Received 0 % 

### 2 Hydrogen (Incl. H in Moisture) As Received 0 % 3 Hydrogen (Incl. H in Moisture) As Received 0 % 1 Nitrogen As Reveiced 0 % 

### 2 Nitrogen As Reveiced 0 % 3 Nitrogen As Reveiced 0 % 1 Oxygen (Excl. O in Moisture) As Received 0 % 2 Oxygen (Excl. O in Moisture) As Received 0 % 

### 3 Oxygen (Excl. O in Moisture) As Received 0 % 1 Oxygen (Incl. O in Moisture) As Received 0 % 2 Oxygen (Incl. O in Moisture) As Received 0 % 

### 3 Oxygen (Incl. O in Moisture) As Received 0 % 1 Fixed Carbon As Received 0 % 2 Fixed Carbon As Received 0 % 3 Fixed Carbon As Received 0 % 

### 1 Heating Value As Received 0 Btu/lb 2 Heating Value As Received 0 Btu/lb 3 Heating Value As Received 0 Btu/lb 

### 1 Sulfur As Receieved 0 % 2 Sulfur As Receieved 0 % 3 Sulfur As Receieved 0 % 1 Volatile Matter As Received 0 % 

### 2 Volatile Matter As Received 0 % 3 Volatile Matter As Received 0 % 1 Moisture Dry Basis 0 % 

### 2 Moisture Dry Basis 0 % 3 Moisture Dry Basis 0 % 1 Ash Dry Basis 0 % 2 Ash Dry Basis 0 % 

### 3 Ash Dry Basis 0 % 1 Carbon Dry Basis 0 % 2 Carbon Dry Basis 0 %



### Friday, February 11, 2011 Page 11 of 18

### Dynegy Danskammer Unit 3

3 Carbon Dry Basis 0 % 

### 1 Hydrogen (Excl. H in Moisture) Dry Basis 0 % 2 Hydrogen (Excl. H in Moisture) Dry Basis 0 % 3 Hydrogen (Excl. H in Moisture) Dry Basis 0 % 1 Nitrogen Dry Basis 0 % 

### 2 Nitrogen Dry Basis 0 % 3 Nitrogen Dry Basis 0 % 1 Oxygen (Excl. O in Moisture) Dry Basis 0 % 

### 2 Oxygen (Excl. O in Moisture) Dry Basis 0 % 3 Oxygen (Excl. O in Moisture) Dry Basis 0 % 1 Fixed Carbon Dry Basis 0 % 2 Fixed Carbon Dry Basis 0 % 

### 3 Fixed Carbon Dry Basis 0 % 1 Heating Valuie Dry Basis 0 Btu/lb 2 Heating Valuie Dry Basis 0 Btu/lb 

### 3 Heating Valuie Dry Basis 0 Btu/lb 1 Sulfur Dry Basis 0 % 2 Sulfur Dry Basis 0 % 3 Sulfur Dry Basis 0 % 

### 1 Volatile Matter Dry Basis 0 %

Friday, February 11, 2011 Page 12 of 18

### Dynegy Danskammer Unit 3

Sampling / Stack Data Results Detail


### LocationStack Exit - Method 0011 Average Run Number 1 2 3 Test Date 7/8/2010 7/8/2010 7/8/2010 Run Start Time 9:09:00 AM12:46:00 PM 3:43:00 PM Run Finish Time 11:15:00 AM2:57:00 PM 5:53:00 PM Net Traversing Points 120 120 120 Net Run Time, minutes 120 120 120 Nozzle Diameter, inches 0.183 0.183 0.183 0.183 Pitot Tube Coefficient 0.84 0.84 0.84 0.840 Dry Gas Meter Calibration Factor 0.992 0.992 0.992 0.992 Barometric Pressure, inches of Mercury 30.13 30.1 30.1 30.110 Average Orifice Meter Differential, inches H2O 1.91 2.26 2.06 2.077 Dry Gas Meter Volume Sampled, cubic feet 92.897 101.208 96.262 96.789 Average Dry Gas Meter Temperature, °F 114.33 110.30 108.37 111.000 Dry Gas Meter Volume Sampled, dscf 85.712 94.027 89.692 89.810 Total Moisture Liquid collected, g 160.5 171.3 160.4 164.067 Volume of Water Vapor, standard cubic feet 7.55 8.06 7.55 7.720 Moisture Content of Stack Gas, % 8.10 7.90 7.76 7.920 Moisture Saturation at Stack Gas Temperature, % 100.00 100.00 100.00 100.000 Dry Mole Fraction 0.919 0.921 0.9224 0.921 Carbon Dioxide, % 12.9 12.9 12.9 12.900 Oxygen, % 6.1 6.1 6.2 6.133 Carbon Monoxide & Nitrogen, % 81 81 80.9 80.967 Fuel Factor 1.15 1.15 1.14 Dry Molecular Weight, lb/lb-Mole 30.31 30.31 30.31 30.310 Wet Molecular weight, lb/lb-Mole 29.31 29.34 29.35 29.333 Flue Gas Static Pressure, inches of H2O -5.1 -5.1 -5.1 -5.100 Absolute Flue Gas Pressure, inches of Mercury 29.76 29.73 29.73 29.740 Average Stack Gas Temperature, °F 279.28 280.25 281.35 280.293 Average Velocity Head, inches of H2O 2.1844008057 51462.709635901

793122.471385780

35327 2.455
Average Stack Gas Velocity, feet/second 97.71 108.90 104.06 103.557 Stack Cross-Sectional Area, square feet 77.887 77.887 77.887 77.887 Dry Volumetric Flow Rate, dry scfm 298,103.5 332,194.6 317,441.2315,913.100 Actual Wet Volumetric Flue Gas Flow Rate, acfm 456,620.3 508,913.7 486,295.3483,943.100 Percent Isokinetic of Sampling Rate, % 102.2 100.6 100.4 101.067 Percent Excess Air, % 39.9 39.9 40.9 40.233 F-Factor, dscfm/MMBtu @ %O2 9798 9809 9823 9,810.000 Round Duct Diameter, inches 119.5 119.5 119.5 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



### Friday, February 11, 2011 Page 13 of 18

### Dynegy Danskammer Unit 3

LocationStack Exit - Method 10 Average Run Number 1 2 3 Test Date 7/8/2010 7/8/2010 7/8/2010 Run Start Time 9:05:00 AM12:45:00 PM 3:42:00 PM Run Finish Time 11:05:00 AM2:45:00 PM 5:42:00 PM Carbon Dioxide, % 12.9 12.9 12.9 12.900 Oxygen, % 6.2 6.2 6.2 6.200 Fuel Factor 1.14 1.14 1.14 Dry Volumetric Flow Rate, dry scfm 297707 331831 317387315,641.667 F-Factor, dscfm/MMBtu @ %O2 9798 9809 9823 9,810.000 Moisture, % 9 8.8 8.5 8.767 Analyzer Make Analyzer Model Analyzer Serial Number Operating Range 396.8 396.8 396.8 396.800 Operating Units ppm ppm ppm No. Readings/Avg. 120 120 120 120.000 Calibration Set 456 456 456 456.000 Calibration Pre Zero Cylinder ID Zero Zero Zero 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 CO XC021845B CO

XC021845B CO

XC021845B Calibration Pre High Cylinder Instrument Response 199 195.8 196.8 197.200 Calibration Pre High Cylinder Bias -0.45 -1.25 -1 -0.900 Calibration Pre High Cylinder Drift 0 0 0 0.000 Calibration Post Zero Cylinder ID Zero Zero Zero 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 CO XC021845B CO

XC021845B CO

XC021845B Calibration Post High Cylinder Instrument Response 195.8 196.8 197.2 196.600 Calibration Post High Cylinder Bias -1.25 -1 -0.9 -1.050 Calibration Post High Cylinder Drift 0.8 0.25 0.1 0.383 Cavg 322 255.1 216.1 264.400 Cavg Units ppmvd ppmvd ppmvd Cgas 325.2624 259.1286 218.7327 267.708 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



### Friday, February 11, 2011 Page 14 of 18

### Dynegy Danskammer Unit 3

LocationStack Exit - Method 25A Average Run Number 1 2 3 Test Date 7/8/2010 7/8/2010 7/8/2010 Run Start Time 9:05:00 AM12:45:00 PM 3:42:00 PM Run Finish Time 11:05:00 AM2:45:00 PM 5:42:00 PM Carbon Dioxide, % 12.9 12.9 12.9 12.900 Oxygen, % 6.2 6.2 6.2 6.200 Fuel Factor 1.15 1.14 1.14 Dry Volumetric Flow Rate, dry scfm 397707 331831 317387348,975.000 F-Factor, dscfm/MMBtu @ %O2 9798 9809 9823 9,810.000 Moisture, % 9 8.8 8.5 8.767 Analyzer Make Analyzer Model Analyzer Serial Number Operating Range 15.12 15.12 15.12 15.120 Operating Units ppm ppm ppm No. Readings/Avg. 120 120 120 120.000 Calibration Set 999 999 999 999.000 Calibration Pre Zero Cylinder ID Zero Zero Zero 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 Propane XC011537B Propane

XC011537B Propane

XC011537B Calibration Pre High Cylinder Instrument Response 5 5.1 5.04 5.047 Calibration Pre High Cylinder Bias -0.62 0 -0.37 -0.330 Calibration Pre High Cylinder Drift 0 0 0 0.000 Calibration Post Zero Cylinder ID Zero Zero Zero 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 Propane XC011537B Propane

XC011537B Propane

XC011537B Calibration Post High Cylinder Instrument Response 5.1 5.04 4.8 4.980 Calibration Post High Cylinder Bias 0 -0.37 -1.88 -0.750 Calibration Post High Cylinder Drift 0.62 0.37 1.51 0.833 Cavg 0 0 0 0.000 Cavg Units ppmvw ppmvw ppmvw Cgas 0 0 0 0.000 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 ppmvw ppmvw ppmvw



### Friday, February 11, 2011 Page 15 of 18

### Dynegy Danskammer Unit 3

LocationStack Exit - Method 6C Average Run Number 1 2 3 Test Date 7/8/2010 7/8/2010 7/8/2010 Run Start Time 9:05:00 AM12:45:00 PM 3:42:00 PM Run Finish Time 11:05:00 AM2:45:00 PM 5:42:00 PM Carbon Dioxide, % 12.9 12.9 12.9 12.900 Oxygen, % 6.2 6.2 6.2 6.200 Fuel Factor 1.14 1.15 1.14 Dry Volumetric Flow Rate, dry scfm 397707 331831 317387348,975.000 F-Factor, dscfm/MMBtu @ %O2 9798 9809 9823 9,810.000 Moisture, % 9 8.8 8.5 8.767 Analyzer Make Analyzer Model Analyzer Serial Number Operating Range 800.3 800.3 800.3 800.300 Operating Units ppm ppm ppm No. Readings/Avg. 120 120 120 120.000 Calibration Set 789 789 789 789.000 Calibration Pre Zero Cylinder ID Zero Zero Zero Calibration Pre Zero Cylinder Instrument Response 3 0.8 0.5 1.433 Calibration Pre Zero Cylinder Bias 0.35 0.07 0.04 0.153 Calibration Pre Zero Cylinder Drift 0 0 0 0.000 Calibration Pre High Cylinder ID SO2 EB0013036 SO2

EB0013036 SO2

EB0013036 Calibration Pre High Cylinder Instrument Response 388.4 378 371.8 379.400 Calibration Pre High Cylinder Bias -1.52 -2.82 -3.6 -2.647 Calibration Pre High Cylinder Drift 0 0 0 0.000 Calibration Post Zero Cylinder ID Zero Zero Zero Calibration Post Zero Cylinder Instrument Response 0.8 0.5 0 0.433 Calibration Post Zero Cylinder Bias 0.07 0.04 -0.02 0.030 Calibration Post Zero Cylinder Drift 0.28 0.03 0.06 0.123 Calibration Post High Cylinder ID SO2 EB0013036 SO2

EB0013036 SO2

EB0013036 Calibration Post High Cylinder Instrument Response 378 371.8 370.4 373.400 Calibration Post High Cylinder Bias -2.82 -3.6 -3.77 -3.397 Calibration Post High Cylinder Drift 1.3 0.78 0.17 0.750 Cavg 401.5 388.5 387.1 392.367 Cavg Units ppmvd ppmvd ppmvd Cgas 418.6735 414.0176 416.7361 416.476 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



### Friday, February 11, 2011 Page 16 of 18

### Dynegy Danskammer Unit 3

LocationStack Exit - Method 7E Average Run Number 1 2 3 Test Date 7/8/2010 7/8/2010 7/8/2010 Run Start Time 9:05:00 AM12:45:00 PM 3:42:00 PM Run Finish Time 11:05:00 AM2:45:00 PM 5:42:00 PM Carbon Dioxide, % 12.9 12.9 12.9 12.900 Oxygen, % 6.2 6.2 6.2 6.200 Fuel Factor 1.14 1.14 1.14 Dry Volumetric Flow Rate, dry scfm 297707 331831 317387315,641.667 F-Factor, dscfm/MMBtu @ %O2 9798 9809 9823 9,810.000 Moisture, % 9 8.8 8.5 8.767 Analyzer Make Analyzer Model Analyzer Serial Number Operating Range 400.3 400.3 400.3 400.300 Operating Units ppm ppm ppm No. Readings/Avg. 120 120 120 120.000 Calibration Set 123 123 123 123.000 Calibration Pre Zero Cylinder ID Zero Zero Zero Calibration Pre Zero Cylinder Instrument Response 1.1 2 2 1.700 Calibration Pre Zero Cylinder Bias -0.02 0.2 0.2 0.127 Calibration Pre Zero Cylinder Drift 0 0 0 0.000 Calibration Pre High Cylinder ID NOx XC021845B NOx

XC021845B NOx

XC021845B Calibration Pre High Cylinder Instrument Response 195.6 189.4 190.1 191.700 Calibration Pre High Cylinder Bias -1.1 -2.65 -2.47 -2.073 Calibration Pre High Cylinder Drift 0 0 0 0.000 Calibration Post Zero Cylinder ID Zero Zero Zero Calibration Post Zero Cylinder Instrument Response 2 2 1.5 1.833 Calibration Post Zero Cylinder Bias 0.2 0.2 0.07 0.157 Calibration Post Zero Cylinder Drift 0.22 0 0.13 0.117 Calibration Post High Cylinder ID NOx XC021845B NOx

XC021845B NOx

XC021845B Calibration Post High Cylinder Instrument Response 189.4 190.1 190.5 190.000 Calibration Post High Cylinder Bias -2.65 -2.47 -2.37 -2.497 Calibration Post High Cylinder Drift 1.55 0.18 0.1 0.610 Cavg 153.4 154.2 154.4 154.000 Cavg Units ppmvd ppmvd ppmvd Cgas 160.1602 163.2654 163.0534 162.160 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



### Friday, February 11, 2011 Page 17 of 18

### Dynegy Danskammer Unit 3

LocationStack Exit - SW0010 Average Run Number 1 2 3 Test Date 7/8/2010 7/8/2010 7/8/2010 Run Start Time 9:09:00 AM12:46:00 PM 3:44:00 PM Run Finish Time 11:15:00 AM2:57:00 PM 5:53:00 PM Net Traversing Points 120 120 119 Net Run Time, minutes 120 120 120 Nozzle Diameter, inches 0.182 0.182 0.182 0.182 Pitot Tube Coefficient 0.84 0.84 0.84 0.840 Dry Gas Meter Calibration Factor 1.02 1.02 1.02 1.020 Barometric Pressure, inches of Mercury 30.13 30.1 30.1 30.110 Average Orifice Meter Differential, inches H2O 1.66 2.06 1.89 1.870 Dry Gas Meter Volume Sampled, cubic feet 85.979 96.151 91.912 91.347 Average Dry Gas Meter Temperature, °F 121.19 124.49 125.71 123.797 Dry Gas Meter Volume Sampled, dscf 80.557 89.577 85.414 85.183 Total Moisture Liquid collected, g 169.1 183.1 167.5 173.233 Volume of Water Vapor, standard cubic feet 7.96 8.62 7.88 8.153 Moisture Content of Stack Gas, % 8.99 8.78 8.45 8.740 Moisture Saturation at Stack Gas Temperature, % 100.00 100.00 100.00 100.000 Dry Mole Fraction 0.9101 0.9122 0.9155 0.913 Carbon Dioxide, % 12.9 12.9 12.9 12.900 Oxygen, % 6.1 6.1 6.2 6.133 Carbon Monoxide & Nitrogen, % 81 81 80.9 80.967 Fuel Factor 1.15 1.15 1.14 Dry Molecular Weight, lb/lb-Mole 30.31 30.31 30.31 30.310 Wet Molecular weight, lb/lb-Mole 29.20 29.23 29.27 29.233 Flue Gas Static Pressure, inches of H2O -5.1 -5.1 -5.1 -5.100 Absolute Flue Gas Pressure, inches of Mercury 29.76 29.73 29.73 29.740 Average Stack Gas Temperature, °F 279.28 280.25 281.35 280.293 Average Velocity Head, inches of H2O 2.1851421485 84692.710712660

819522.469300469

34562 2.455
Average Stack Gas Velocity, feet/second 97.91 109.12 104.16 103.730 Stack Cross-Sectional Area, square feet 77.887 77.887 77.887 77.887 Dry Volumetric Flow Rate, dry scfm 295,820.8 329,685.2 315,369.4313,625.133 Actual Wet Volumetric Flue Gas Flow Rate, acfm 457,555.0 509,941.8 486,762.6484,753.133 Percent Isokinetic of Sampling Rate, % 97.8 97.6 97.3 97.567 Percent Excess Air, % 39.9 39.9 40.9 40.233 F-Factor, dscfm/MMBtu @ %O2 9798 9809 9823 9,810.000 Round Duct Diameter, inches 119.5 119.5 119.5 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



### Friday, February 11, 2011 Page 18 of 18