### Name: Mark Williams, P.E

Title: Environmental Manager Company: Birchwood Power Facility Sign Date: 8/2/2010 Name: Mark Looney Title: President Company: Environmental Source Samplers, Inc Sign Date: 8/2/2010 Permitted Facility Representative / Date Testing Company Representative / Date 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.

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### 8/2/2010

Facility Information:
Birchwood Power
10900 Birchwood Drive

King George VA22485 Contact:Mark Williams Phone: 540.775.6304 Fax: 540.775.9601 Email: mark3.williams@ge.com Testing Company: Environmental Source Samplers, Inc 436 Raleigh Street

Wilmington NC28412 Contact:Mark Looney Phone:910-799-1055 Fax: 910-799-1056 Email: mark@essknowsair.com

Air Permit Number: Permitted Source ID/Name: BOILER 1A 1A Permitted Maximum Process Rate: Max. Normal Operation Process Rate: Target Process Test Rate

Description of the source (including control equipment). Please see the attachments for source or process flow diagram: Birchwood Power Facility operates a 242 megawatt (net) coal-fired boiler at the King George Facility. A 40 CFR 75 CEMS is maintained at the stack sampling plane for the measurement of flowrate (SCFH), CO2 (%-wet), NOx (ppmvw) and SO2 (ppmvw). Additionally, a 40 CFR 60 CEMS is maintained at the inlet duct to the FGD Scrubber for the measurement of CO2 (%-wet) and SO2 (ppmvw). Industry/SCC/NAIS

Sampling Location Information:

Test Parameter Information: AFS #: FRS #:

SCC / Description10100203 External Combustion Boilers - Electric Generation - Bituminous/Subbituminous Coal - Cyclone Furnace (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 BOILER 1A 186 2268 1248 4 0 4 0 0

Target Parameter Test Method Number of

Test Runs Test Run

Duration Sample

Points Comments Location Carbon Monoxide Method 10 3 240 0 BOILER 1A Total organic compounds

(TOC) as Propane Method 25A 3 240 0 BOILER 1A
Inorganic (Aqueous)

Condensible Part. OTM - 27/28 3 240 0 BOILER 1A

Filterable PM2.5 OTM - 27/28 3 240 0 BOILER 1A Total PM2.5 OTM - 27/28 3 240 0 BOILER 1A



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### 8/2/2010

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.
No Modification

Filterable Particulate OTM - 27/28 3 240 0 BOILER 1A Organic Condensible

Particulate OTM - 27/28 3 240 0 BOILER 1A

Total Particulate OTM - 27/28 3 240 0 BOILER 1A Filterable PM2.5 - PM10 OTM - 27/28 3 240 0 BOILER 1A Arsenic Method 29 3 240 0 BOILER 1A Beryllium Method 29 3 240 0 BOILER 1A Cadmium Method 29 3 240 0 BOILER 1A Chromium Method 29 3 240 0 BOILER 1A Cobalt Method 29 3 240 0 BOILER 1A Lead Method 29 3 240 0 BOILER 1A Manganese Method 29 3 240 0 BOILER 1A Nickel Method 29 3 240 0 BOILER 1A Selenium Method 29 3 240 0 BOILER 1A Mercury Method 29 3 240 0 BOILER 1A Antimony Method 29 3 240 0 BOILER 1A Co2 Method 3A CO2 3 240 0 BOILER 1A O2 Method 3A O2 3 240 0 BOILER 1A



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### 8/2/2010

Sampling / Stack Data Results Summary



### Location BOILER 1A - Method 10 Average Run Number 1 2 3
Test Date 5/18/2010 5/19/2010 5/19/2010 Run Start Time 12:35:00 PM 5:05:00 AM10:20:00 AM

Run Finish Time 4:34:00 PM 9:04:00 AM 2:19:00 PM

Carbon Dioxide, % 13.296 13.377 13.225 13.299 Oxygen, % 6.228 6.2882 6.2689 6.262 Dry Volumetric Flow Rate, dry scfm 523535.6 525405.5 528023.7 525,654.933 F-Factor, dscfm/MMBtu @ %O2 9780 9780 9780 9,780.000 Moisture, % 0 0 0 0.000 Fuel Type Coal - Bituminous Coal -

Bituminous Coal -

Bituminous
Fw 10640 10640 10640 10,640.000
Fc 1800 1800 1800 1,800.000



### Location BOILER 1A - Method 25A Average Run Number 1 2 3
Test Date 5/18/2010 5/19/2010 5/19/2010 Run Start Time 12:35:00 PM 5:05:00 AM10:20:00 AM

Run Finish Time 4:34:00 PM 9:04:00 AM 2:19:00 PM

Carbon Dioxide, % 13.296 13.377 13.225 13.299 Oxygen, % 6.228 6.2882 6.2689 6.262 Dry Volumetric Flow Rate, dry scfm 523535.6 525405.5 528023.7 525,654.933 F-Factor, dscfm/MMBtu @ %O2 9780 9780 9780 9,780.000 Moisture, % 0 0 0 0.000 Fuel Type Coal - Bituminous Coal -

Bituminous Coal -

Bituminous
Fw 10640 10640 10640 10,640.000
Fc 1800 1800 1800 1,800.000



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Location BOILER 1A - Method 29 Average Run Number 1 2 3
Test Date 5/18/2010 5/19/2010 5/19/2010 Run Start Time 12:35:00 PM 5:05:00 AM10:20:00 AM

Run Finish Time 5:20:00 PM 9:43:00 AM 3:00:00 PM

Net Run Time, minutes 240 240 240 Dry Gas Meter Volume Sampled, dscf 158.002 173.591 173.176 168.256 Moisture Content of Stack Gas, % 10.10 9.74 9.26 9.700 Moisture Saturation at Stack Gas Temperature, % 53.64 53.50 53.16 53.433 Carbon Dioxide, % 13.296 13.377 13.225 13.299 Oxygen, % 6.228 6.2882 6.2689 6.262 Average Stack Gas Temperature, °F 181.29 181.27 180.98 181.180 Dry Volumetric Flow Rate, dry scfm 523,535.6 525,405.5 528,023.7 525,654.933 Actual Wet Volumetric Flue Gas Flow Rate, acfm 722,765.8 720,954.4 720,388.3 721,369.500 Percent Isokinetic of Sampling Rate, % 98.6 108.0 107.2 104.600 F-Factor, dscfm/MMBtu @ %O2 9780 9780 9780 9,780.000
Fw 10640 10640 10640 10,640.000
Fc 1800 1800 1800 1,800.000



### Location BOILER 1A - Method 3A CO2 Average Run Number 1 2 3
Test Date 5/19/2010 5/19/2010 5/19/2010 Run Start Time 12:35:00 PM 5:05:00 AM10:20:00 AM

Run Finish Time 4:34:00 PM 9:04:00 AM 2:19:00 PM

Carbon Dioxide, % 13.296 13.377 13.225 13.299 Oxygen, % 6.228 6.2882 6.2689 6.262 Dry Volumetric Flow Rate, dry scfm 0 0 0 0.000 F-Factor, dscfm/MMBtu @ %O2 9780 9780 9780 9,780.000 Moisture, % 0 0 0 0.000 Fuel Type Coal - Bituminous Coal -

Bituminous Coal -

Bituminous
Fw 10640 10640 10640 10,640.000
Fc 1800 1800 1800 1,800.000



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### 8/2/2010

Location BOILER 1A - Method 3A O2 Average Run Number 1 2 3
Test Date 5/18/2010 5/19/2010 5/19/2010 Run Start Time 12:35:00 PM 5:05:00 AM10:20:00 AM

Run Finish Time 4:34:00 PM 9:04:00 AM 2:19:00 PM

Carbon Dioxide, % 13.296 13.377 13.225 13.299 Oxygen, % 6.228 6.2882 6.2689 6.262 Dry Volumetric Flow Rate, dry scfm 0 0 0 0.000 F-Factor, dscfm/MMBtu @ %O2 9780 9780 9780 9,780.000 Moisture, % 0 0 0 0.000 Fuel Type Coal - Bituminous Coal -

Bituminous Coal -

Bituminous
Fw 10640 10640 10640 10,640.000
Fc 1800 1800 1800 1,800.000



### Location BOILER 1A - OTM - 27/28 Average Run Number 1 2 3
Test Date 5/18/2010 5/19/2010 5/19/2010 Run Start Time 12:35:00 PM 5:05:00 AM10:20:00 AM

Run Finish Time 5:20:00 PM 9:42:00 AM 3:00:00 PM

Net Run Time, minutes 221.5 241.01 239.55 Dry Gas Meter Volume Sampled, dscf 69.990 71.568 71.232 70.930 Moisture Content of Stack Gas, % 10.99 10.92 10.50 10.803 Moisture Saturation at Stack Gas Temperature, % 52.98 53.08 53.68 53.247 Carbon Dioxide, % 13.296 13.377 13.225 13.299 Oxygen, % 6.228 6.2882 6.2689 6.262 Average Stack Gas Temperature, °F 180.75 180.83 181.42 181.000 Dry Volumetric Flow Rate, dry scfm 522,299.7 523,621.3 522,822.8 522,914.600 Actual Wet Volumetric Flue Gas Flow Rate, acfm 727,407.7 728,766.2 723,671.6 726,615.167 Percent Isokinetic of Sampling Rate, % 106.8 100.1 100.4 102.433 F-Factor, dscfm/MMBtu @ %O2 9780 9780 9780 9,780.000
Fw 10640 10640 10640 10,640.000
Fc 1800 1800 1800 1,800.000



### Thursday, January 20, 2011 Page 6 of 17

### 8/2/2010

Emissions Summary



### Location: BOILER 1A - Method 10 Compound: Carbon Monoxide Average Run 1 2 3 Elb/hr 1.75E+02 1.49E+02 1.19E+02 147.667 lb/mmBtuO2 7.76E-02 6.63E-02 5.24E-02 0.065 ppm 7.66E+01 6.52E+01 5.16E+01 64.467 ppm@7%O2 7.26E+01 6.20E+01 4.90E+01 61.200



### Location: BOILER 1A - Method 25A Compound: Total organic compounds (TOC) as Average Run 1 2 3 Elb/hr 7.24E-01 2.05E-01 -4.16E-01 0.171 lb/mmBtuO2 3.21E-04 9.08E-05 -1.83E-04 0.000 ppm 2.01E-01 5.67E-02 -1.15E-01 0.048 ppm@7%O2 1.90E-01 5.39E-02 -1.09E-01 0.045



### Location: BOILER 1A - Method 29 Compound: Antimony Average RunNumber 1 2 3 Mass_mg 0.001219 0.00165 0.00034 0.001 Elb/hr 5.34E-04 6.61E-04 1.37E-04 0.000 lb/mmBtuO2 2.37E-07 2.93E-07 6.05E-08 0.000 

### Compound: Arsenic Average RunNumber 1 2 3 Mass_mg 0.000693 0.000603 0.000635 0.001 Elb/hr 3.04E-04 2.41E-04 2.56E-04 0.000 lb/mmBtuO2 1.35E-07 1.07E-07 1.13E-07 0.000 

### Compound: Beryllium Average RunNumber 1 2 3 Mass_mg 0.000104 0.00011 0.000121 0.000 Elb/hr 4.56E-05 4.40E-05 4.88E-05 0.000 lb/mmBtuO2 2.02E-08 1.95E-08 2.15E-08 0.000 

### Compound: Cadmium Average RunNumber 1 2 3 Mass_mg 0.001094 0.0006535 0.000551 0.001 Elb/hr 4.79E-04 2.62E-04 2.22E-04 0.000 lb/mmBtuO2 2.13E-07 1.16E-07 9.80E-08 0.000 

### Compound: Chromium Average RunNumber 1 2 3



### Thursday, January 20, 2011 Page 7 of 17

### 8/2/2010 Mass_mg 0.01126 0.0178065 0.008197 0.012 Elb/hr 4.94E-03 7.13E-03 3.31E-03 0.005 lb/mmBtuO2 2.19E-06 3.16E-06 1.46E-06 0.000 

### Compound: Cobalt Average RunNumber 1 2 3 Mass_mg 0.00127 0.000964 0.000625 0.001 Elb/hr 5.57E-04 3.86E-04 2.52E-04 0.000 lb/mmBtuO2 2.47E-07 1.71E-07 1.11E-07 0.000 

### Compound: Lead Average RunNumber 1 2 3 Mass_mg 0.00387 0.002278 0.003247 0.003 Elb/hr 1.70E-03 9.12E-04 1.31E-03 0.001 lb/mmBtuO2 7.52E-07 4.05E-07 5.77E-07 0.000 

### Compound: Manganese Average RunNumber 1 2 3 Mass_mg 0.01244 0.02536 0.02866 0.022 Elb/hr 5.45E-03 1.02E-02 1.16E-02 0.009 lb/mmBtuO2 2.42E-06 4.51E-06 5.10E-06 0.000 

### Compound: Mercury Average RunNumber 1 2 3 Mass_mg 0.000066 0.000078 0.000111 0.000 Elb/hr 2.89E-05 3.12E-05 4.48E-05 0.000 lb/mmBtuO2 1.28E-08 1.39E-08 1.97E-08 0.000 

### Compound: Nickel Average RunNumber 1 2 3 Mass_mg 0.02248 0.021407 0.010499 0.018 Elb/hr 9.85E-03 8.57E-03 4.23E-03 0.008 lb/mmBtuO2 4.37E-06 3.80E-06 1.87E-06 0.000 

### Compound: Selenium Average RunNumber 1 2 3 Mass_mg 0.001391 0.000264 0.000603 0.001 Elb/hr 6.10E-04 1.06E-04 2.43E-04 0.000 lb/mmBtuO2 2.70E-07 4.69E-08 1.07E-07 0.000



### Location: BOILER 1A - OTM - 27/28 Compound: Filterable Particulate Average RunNumber 1 2 3 Mass_mg 48.4 13.4 13.6 25.133 Elb/hr 4.78E+01 1.30E+01 1.32E+01 24.667 lb/mmBtuO2 2.12E-02 5.77E-03 5.88E-03 0.011



### Thursday, January 20, 2011 Page 8 of 17

### 8/2/2010

Process Run Data Compound: Filterable PM2.5 Average RunNumber 1 2 3 Mass_mg 19 0.1 0.1 6.400 Elb/hr 1.88E+01 9.68E-02 9.71E-02 6.331 lb/mmBtuO2 8.34E-03 4.31E-05 4.32E-05 0.003 

### Compound: Filterable PM2.5 - PM10 Average RunNumber 1 2 3 Mass_mg 8.7 3 2 4.567 Elb/hr 8.59E+00 2.90E+00 1.94E+00 4.477 lb/mmBtuO2 3.82E-03 1.29E-03 8.65E-04 0.002 

### Compound: Inorganic (Aqueous) Condensible Pa Average RunNumber 1 2 3 Mass_mg 32.3 24.9 17.9 25.033 Elb/hr 3.19E+01 2.41E+01 1.74E+01 24.467 lb/mmBtuO2 1.42E-02 1.07E-02 7.74E-03 0.011 

### Compound: Organic Condensible Particulate Average RunNumber 1 2 3 Mass_mg 1.7 4.8 1.5 2.667 Elb/hr 1.68E+00 4.65E+00 1.46E+00 2.597 lb/mmBtuO2 7.46E-04 2.07E-03 6.49E-04 0.001 

### Compound: Total Particulate Average RunNumber 1 2 3 Mass_mg 82.4 43.1 33 52.833 Elb/hr 8.13E+01 4.17E+01 3.20E+01 51.667 lb/mmBtuO2 3.62E-02 1.86E-02 1.43E-02 0.023 

### Compound: Total PM2.5 Average RunNumber 1 2 3 Mass_mg 1.3 0.07 3.8 1.723 Elb/hr 1.28E+00 6.77E-02 3.69E+00 1.679 lb/mmBtuO2 5.70E-04 3.02E-05 1.64E-03 0.001



### Thursday, January 20, 2011 Page 9 of 17

### 8/2/2010

Process Run Data



### Run Name Value UOM Comments Target Value 1 Steam Flow 84.08 kpph M29-OTM27&28- M3A-M10-M26- M316-M25a Run 1 5/18/10 12:35- 17:20 0



### 2 Steam Flow 84.09 kpph M29-OTM27&28- M3A-M10-M26- M316-M25a Run 2 5/19/2010 05:05 - 09:43 0

3 Steam Flow 84.38 kpph M29-OTM27&28- M3A-M10-M26- M316-M25a Run 2 5/19/2010 05:05 - 09:43 Run 3 5/19/2010 10:20 - 15:00 0

1 Coal Feed Value 82.59 ton/hr M29-OTM27&28- M3A-M10-M26- M316-M25a Run 1 5/18/10 12:35- 17:20 0



### 2 Coal Feed Value 83.68 ton/hr M29-OTM27&28- M3A-M10-M26- M316-M25a Run 2 5/19/2010 05:05 - 09:43 0

3 Coal Feed Value 83.89 ton/hr M29-OTM27&28- M3A-M10-M26- M316-M25a Run 2 5/19/2010 05:05 - 09:43 Run 3 5/19/2010 10:20 - 15:00 0

1 Unit Gross Electical Output 236.43 MW M29-OTM27&28- M3A-M10-M26- M316-M25a Run 1 5/18/10 12:35- 17:20 0



### 2 Unit Gross Electical Output 236.67 MW M29-OTM27&28- M3A-M10-M26- M316-M25a Run 2 5/19/2010 05:05 - 09:43 0

Thursday, January 20, 2011 Page 10 of 17

### 8/2/2010

APCD Run Data

Process Lab Run Data 3 Unit Gross Electical Output 236.97 MW M29-OTM27&28- M3A-M10-M26- M316-M25a Run 2 5/19/2010 05:05 - 09:43 Run 3 5/19/2010 10:20 - 15:00 0

1 Heat Input 2116.1 Million Btus/million BTU using O2M29-OTM27&28- M3A-M10-M26- M316-M25a Run 1 5/18/10 12:35- 17:20 0

2 Heat Input 2042.7 Million Btus/million BTU using O2M29-OTM27&28- M3A-M10-M26- M316-M25a Run 2 5/19/2010 05:05 - 09:43 0

3 Heat Input 2117.5 Million Btus/million BTU using O2M29-OTM27&28- M3A-M10-M26- M316-M25a Run 2 5/19/2010 05:05 - 09:43 Run 3 5/19/2010 10:20 - 15:00 0

Run Name Value UOM Comments 1 See Spreadsheet 2 See Spreadsheet 9.15



### Thursday, January 20, 2011 Page 11 of 17

### 8/2/2010

Sampling / Stack Data Results Detail



### Location BOILER 1A - Method 10 Average Run Number 1 2 3 Test Date 5/18/2010 5/19/2010 5/19/2010 Run Start Time 12:35:00 PM5:05:00 AM10:20:00 AM Run Finish Time 4:34:00 PM9:04:00 AM 2:19:00 PM Carbon Dioxide, % 13.296 13.377 13.225 13.299 Oxygen, % 6.228 6.2882 6.2689 6.262 Fuel Factor 1.1 1.09 1.11 Dry Volumetric Flow Rate, dry scfm 523535.6 525405.5 528023.7525,654.933 F-Factor, dscfm/MMBtu @ %O2 9780 9780 9780 9,780.000 Moisture, % 0 0 0 0.000 Analyzer Make Analyzer Model Analyzer Serial Number Operating Range 0 0 0 0.000 Operating Units ppm ppm ppm No. Readings/Avg. 240 240 240 240.000 Calibration Set 3 3 3 3.000 Calibration Pre Zero Cylinder ID CC CC CC Calibration Pre Zero Cylinder Instrument Response 0.445 0.545 0.688 0.559 Calibration Pre Zero Cylinder Bias 0.31 0.4 0.53 0.413 Calibration Pre Zero Cylinder Drift 0 0 0 0.000 Calibration Pre High Cylinder ID CC41265 CC41265 CC41265 Calibration Pre High Cylinder Instrument Response 91.675 90.322 92.315 91.437 Calibration Pre High Cylinder Bias -0.48 -1.66 0.18 -0.653 Calibration Pre High Cylinder Drift 0 0 0 0.000 Calibration Post Zero Cylinder ID CC CC CC Calibration Post Zero Cylinder Instrument Response 0.882 0.688 1.114 0.895 Calibration Post Zero Cylinder Bias 0.83 0.53 0.93 0.763 Calibration Post Zero Cylinder Drift 0.47 0.13 0.4 0.333 Calibration Post High Cylinder ID CC41265 CC41265 CC41265 Calibration Post High Cylinder Instrument Response 90.224 92.315 93.211 91.917 Calibration Post High Cylinder Bias -2.05 0.18 1.01 -0.287 Calibration Post High Cylinder Drift 1.57 1.84 0.83 1.413 Cavg 75.679 64.805 52.286 64.257 Cavg Units ppmvd ppmvd ppmvd Cgas 76.5809 65.2274 51.5573 64.455 Cgas Units ppmvd ppmvd ppmvd Fuel Type Coal - Bituminous Coal -

Bituminous Coal -

Bituminous Fw 10640 10640 1064010,640.000 Fc 1800 1800 1800 1,800.000 Cgasw 0 0 0 0.000 Cgasw Units



### Thursday, January 20, 2011 Page 12 of 17

### 8/2/2010

Location BOILER 1A - Method 25A Average Run Number 1 2 3 Test Date 5/18/2010 5/19/2010 5/19/2010 Run Start Time 12:35:00 PM5:05:00 AM10:20:00 AM Run Finish Time 4:34:00 PM9:04:00 AM 2:19:00 PM Carbon Dioxide, % 13.296 13.377 13.225 13.299 Oxygen, % 6.228 6.2882 6.2689 6.262 Fuel Factor 1.1 1.09 1.11 Dry Volumetric Flow Rate, dry scfm 523535.6 525405.5 528023.7525,654.933 F-Factor, dscfm/MMBtu @ %O2 9780 9780 9780 9,780.000 Moisture, % 0 0 0 0.000 Analyzer Make Analyzer Model Analyzer Serial Number Operating Range 0 0 0 0.000 Operating Units ppm ppm ppm No. Readings/Avg. 240 240 240 240.000 Calibration Set 4 4 4 4.000 Calibration Pre Zero Cylinder ID CC CC CC Calibration Pre Zero Cylinder Instrument Response 0.324 0.317 0.388 0.343 Calibration Pre Zero Cylinder Bias 0.08 0.08 0.14 0.100 Calibration Pre Zero Cylinder Drift 0 0 0 0.000 Calibration Pre High Cylinder ID CC205237 CC205237 CC205237 Calibration Pre High Cylinder Instrument Response 48.876 48.882 48.565 48.774 Calibration Pre High Cylinder Bias -0.11 -0.11 -0.4 -0.207 Calibration Pre High Cylinder Drift 0 0 0 0.000 Calibration Post Zero Cylinder ID CC CC CC Calibration Post Zero Cylinder Instrument Response 0.41 0.388 0.616 0.471 Calibration Post Zero Cylinder Bias 0.16 0.14 0.35 0.217 Calibration Post Zero Cylinder Drift 0.08 0.06 0.21 0.117 Calibration Post High Cylinder ID CC205237 CC205237 CC205237 Calibration Post High Cylinder Instrument Response 48.622 48.565 48.122 48.436 Calibration Post High Cylinder Bias -0.35 -0.4 -0.81 -0.520 Calibration Post High Cylinder Drift 0.24 0.29 0.41 0.313 Cavg 0.564 0.408 0.391 0.454 Cavg Units ppmvd ppmvd ppmvd Cgas 0.2013 0.0567 -0.1147 0.048 Cgas Units ppmvd ppmvd ppmvd Fuel Type Coal - Bituminous Coal -

Bituminous Coal -

Bituminous Fw 10640 10640 1064010,640.000 Fc 1800 1800 1800 1,800.000 Cgasw 0 0 0 0.000 Cgasw Units



### Thursday, January 20, 2011 Page 13 of 17

### 8/2/2010

Location BOILER 1A - Method 29 Average Run Number 1 2 3 Test Date 5/18/2010 5/19/2010 5/19/2010 Run Start Time 12:35:00 PM5:05:00 AM10:20:00 AM Run Finish Time 5:20:00 PM9:43:00 AM 3:00:00 PM Net Traversing Points 1 1 1 Net Run Time, minutes 240 240 240 Nozzle Diameter, inches 0.21 0.21 0.21 0.210 Pitot Tube Coefficient 0.84 0.84 0.84 0.840 Dry Gas Meter Calibration Factor 1.0137 1.1037 1.1037 1.074 Barometric Pressure, inches of Mercury 29.35 29.4 29.4 29.383 Average Orifice Meter Differential, inches H2O 1.50 1.50 1.50 1.500 Dry Gas Meter Volume Sampled, cubic feet 158.149 158.546 159.505 158.733 Average Dry Gas Meter Temperature, °F 67.50 64.96 69.40 67.287 Dry Gas Meter Volume Sampled, dscf 158.002 173.591 173.176 168.256 Total Moisture Liquid collected, g 377.4 398.1 375.7 383.733 Volume of Water Vapor, standard cubic feet 17.76 18.74 17.68 18.060 Moisture Content of Stack Gas, % 10.10 9.74 9.26 9.700 Moisture Saturation at Stack Gas Temperature, % 53.64 53.50 53.16 53.433 Dry Mole Fraction 0.899 0.9026 0.9074 0.903 Carbon Dioxide, % 13.296 13.377 13.225 13.299 Oxygen, % 6.228 6.2882 6.2689 6.262 Carbon Monoxide & Nitrogen, % 80.476 80.3348 80.5061 80.439 Fuel Factor 1.10 1.09 1.11 Dry Molecular Weight, lb/lb-Mole 30.38 30.39 30.37 30.380 Wet Molecular weight, lb/lb-Mole 29.13 29.18 29.22 29.177 Flue Gas Static Pressure, inches of H2O -0.9 -0.86 -0.85 -0.870 Absolute Flue Gas Pressure, inches of Mercury 29.28 29.34 29.34 29.320 Average Stack Gas Temperature, °F 181.29 181.27 180.98 181.180 Average Velocity Head, inches of H2O 1.051 1.05 1.05 1.050 Average Stack Gas Velocity, feet/second 63.84 63.68 63.63 63.717 Stack Cross-Sectional Area, square feet 188.692 188.692 188.692 188.692 Dry Volumetric Flow Rate, dry scfm 523,535.6 525,405.5 528,023.7525,654.933 Actual Wet Volumetric Flue Gas Flow Rate, acfm 722,765.8 720,954.4 720,388.3721,369.500 Percent Isokinetic of Sampling Rate, % 98.6 108.0 107.2 104.600 Percent Excess Air, % 41.5 42.1 41.8 41.800 F-Factor, dscfm/MMBtu @ %O2 9780 9780 9780 9,780.000 Round Duct Diameter, inches 186 186 186 Rectangular Duct Width, inches 0 0 0 Rectangular Duct Length, inches 0 0 0 Fw 10640 10640 1064010,640.000 Fc 1800 1800 1800 1,800.000



### Thursday, January 20, 2011 Page 14 of 17

### 8/2/2010

Location BOILER 1A - Method 3A CO2 Average Run Number 1 2 3 Test Date 5/19/2010 5/19/2010 5/19/2010 Run Start Time 12:35:00 PM5:05:00 AM10:20:00 AM Run Finish Time 4:34:00 PM9:04:00 AM 2:19:00 PM Carbon Dioxide, % 13.296 13.377 13.225 13.299 Oxygen, % 6.228 6.2882 6.2689 6.262 Fuel Factor 1.1 1.09 1.11 Dry Volumetric Flow Rate, dry scfm 0 0 0 0.000 F-Factor, dscfm/MMBtu @ %O2 9780 9780 9780 9,780.000 Moisture, % 0 0 0 0.000 Analyzer Make Analyzer Model Analyzer Serial Number Operating Range 0 0 0 0.000 Operating Units % % % No. Readings/Avg. 240 240 240 240.000 Calibration Set 1 1 1 1.000 Calibration Pre Zero Cylinder ID CC CC CC Calibration Pre Zero Cylinder Instrument Response 0.04 0.033 0.08 0.051 Calibration Pre Zero Cylinder Bias 0.41 0.37 0.66 0.480 Calibration Pre Zero Cylinder Drift 0 0 0 0.000 Calibration Pre High Cylinder ID XCO01052BCO2XCO01052B

-CO2XCO01052BCO2 Calibration Pre High Cylinder Instrument Response 16.051 15.977 15.934 15.987 Calibration Pre High Cylinder Bias 0.08 -0.38 -0.65 -0.317 Calibration Pre High Cylinder Drift 0 0 0 0.000 Calibration Post Zero Cylinder ID CC CC CC Calibration Post Zero Cylinder Instrument Response -0.103 0.08 0.102 0.026 Calibration Post Zero Cylinder Bias -0.48 0.66 0.8 0.327 Calibration Post Zero Cylinder Drift 0.89 0.29 0.14 0.440 Calibration Post High Cylinder ID XCO01052BCO2XCO01052B

-CO2XCO01052BCO2 Calibration Post High Cylinder Instrument Response 15.965 15.934 16.065 15.988 Calibration Post High Cylinder Bias -0.45 -0.65 0.17 -0.310 Calibration Post High Cylinder Drift 0.53 0.27 0.82 0.540 Cavg 13.231 13.283 13.175 13.230 Cavg Units %vd %vd %vd Cgas 13.296 13.3771 13.2251 13.299 Cgas Units %vd %vd %vd Fuel Type Coal - Bituminous Coal -

Bituminous Coal -

Bituminous Fw 10640 10640 1064010,640.000 Fc 1800 1800 1800 1,800.000 Cgasw 0 0 0 0.000 Cgasw Units



### Thursday, January 20, 2011 Page 15 of 17

### 8/2/2010

Location BOILER 1A - Method 3A O2 Average Run Number 1 2 3 Test Date 5/18/2010 5/19/2010 5/19/2010 Run Start Time 12:35:00 PM5:05:00 AM10:20:00 AM Run Finish Time 4:34:00 PM9:04:00 AM 2:19:00 PM Carbon Dioxide, % 13.296 13.377 13.225 13.299 Oxygen, % 6.228 6.2882 6.2689 6.262 Fuel Factor 1.1 1.09 1.11 Dry Volumetric Flow Rate, dry scfm 0 0 0 0.000 F-Factor, dscfm/MMBtu @ %O2 9780 9780 9780 9,780.000 Moisture, % 0 0 0 0.000 Analyzer Make Analyzer Model Analyzer Serial Number Operating Range 0 0 0 0.000 Operating Units % % % No. Readings/Avg. 240 240 240 240.000 Calibration Set 2 2 2 2.000 Calibration Pre Zero Cylinder ID CC CC CC Calibration Pre Zero Cylinder Instrument Response 0.057 0.058 0.103 0.073 Calibration Pre Zero Cylinder Bias 0.19 0.2 0.58 0.323 Calibration Pre Zero Cylinder Drift 0 0 0 0.000 Calibration Pre High Cylinder ID XCO01052BO2XCO01052B

-O2XCO01052BO2 Calibration Pre High Cylinder Instrument Response 12.045 12.045 12.075 12.055 Calibration Pre High Cylinder Bias 1.09 1.09 1.34 1.173 Calibration Pre High Cylinder Drift 0 0 0 0.000 Calibration Post Zero Cylinder ID CC CC CC Calibration Post Zero Cylinder Instrument Response 0.115 0.103 0.155 0.124 Calibration Post Zero Cylinder Bias 0.68 0.58 1.01 0.757 Calibration Post Zero Cylinder Drift 0.49 0.38 0.43 0.433 Calibration Post High Cylinder ID XCO01052BO2XCO01052B

-O2XCO01052BO2 Calibration Post High Cylinder Instrument Response 12.124 12.075 12.134 12.111 Calibration Post High Cylinder Bias 1.75 1.34 1.83 1.640 Calibration Post High Cylinder Drift 0.66 0.25 0.49 0.467 Cavg 6.334 6.379 6.406 6.373 Cavg Units %vd pptvd %vd Cgas 6.228 6.2882 6.2689 6.262 Cgas Units %vd pptvd %vd Fuel Type Coal - Bituminous Coal -

Bituminous Coal -

Bituminous Fw 10640 10640 1064010,640.000 Fc 1800 1800 1800 1,800.000 Cgasw 0 0 0 0.000 Cgasw Units



### Thursday, January 20, 2011 Page 16 of 17

### 8/2/2010

Location BOILER 1A - OTM - 27/28 Average Run Number 1 2 3 Test Date 5/18/2010 5/19/2010 5/19/2010 Run Start Time 12:35:00 PM5:05:00 AM10:20:00 AM Run Finish Time 5:20:00 PM9:42:00 AM 3:00:00 PM Net Traversing Points 12 13 13 Net Run Time, minutes 221.5 241.01 239.55 Nozzle Diameter, inches 0.14 0.14 0.14 0.140 Pitot Tube Coefficient 0.84 0.84 0.84 0.840 Dry Gas Meter Calibration Factor 0.9852 0.9852 0.9852 0.985 Barometric Pressure, inches of Mercury 29.35 29.35 29.4 29.367 Average Orifice Meter Differential, inches H2O 0.33 0.33 0.33 0.330 Dry Gas Meter Volume Sampled, cubic feet 74.509 75.558 75.887 75.318 Average Dry Gas Meter Temperature, °F 83.67 79.17 85.00 82.613 Dry Gas Meter Volume Sampled, dscf 69.990 71.568 71.232 70.930 Total Moisture Liquid collected, g 183.5 186.4 177.6 182.500 Volume of Water Vapor, standard cubic feet 8.64 8.77 8.36 8.590 Moisture Content of Stack Gas, % 10.99 10.92 10.50 10.803 Moisture Saturation at Stack Gas Temperature, % 52.98 53.08 53.68 53.247 Dry Mole Fraction 0.8901 0.8908 0.895 0.892 Carbon Dioxide, % 13.296 13.377 13.225 13.299 Oxygen, % 6.228 6.2882 6.2689 6.262 Carbon Monoxide & Nitrogen, % 80.476 80.3348 80.5061 80.439 Fuel Factor 1.10 1.09 1.11 Dry Molecular Weight, lb/lb-Mole 30.38 30.39 30.37 30.380 Wet Molecular weight, lb/lb-Mole 29.02 29.04 29.07 29.043 Flue Gas Static Pressure, inches of H2O -0.84 -0.84 -0.85 -0.843 Absolute Flue Gas Pressure, inches of Mercury 29.29 29.29 29.34 29.307 Average Stack Gas Temperature, °F 180.75 180.83 181.42 181.000 Average Velocity Head, inches of H2O 1.0618416048 57171.066321839

96791 1.053475578

8508 1.061
Average Stack Gas Velocity, feet/second 64.25 64.37 63.92 64.180 Stack Cross-Sectional Area, square feet 188.692 188.692 188.692 188.692 Dry Volumetric Flow Rate, dry scfm 522,299.7 523,621.3 522,822.8522,914.600 Actual Wet Volumetric Flue Gas Flow Rate, acfm 727,407.7 728,766.2 723,671.6726,615.167 Percent Isokinetic of Sampling Rate, % 106.8 100.1 100.4 102.433 Percent Excess Air, % 41.5 42.1 41.8 41.800 F-Factor, dscfm/MMBtu @ %O2 9780 9780 9780 9,780.000 Round Duct Diameter, inches 186 186 186 Rectangular Duct Width, inches 0 0 0 Rectangular Duct Length, inches 0 0 0 Fw 10640 10640 1064010,640.000 Fc 1800 1800 1800 1,800.000



### Thursday, January 20, 2011 Page 17 of 17