### Name: Ron Kocourek

Title: Plant Manager Company: Black Hills Wyoming, LLC Sign Date: Name: Karl Breuer Title: Senior Technical Writer Company: Air Pollution Testing, Inc. Sign Date: 8/25/2010 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.

Friday, January 21, 2011 Page 1 of 25

### Facility Information:

WYGEN 1 13151 Highway 51

Gillette Wy 82718 Contact: Tim Mordhorst
Phone: 605-721-2181
Fax: Of above person
Email: Tim.Mordhorst@blackhillscorp.co

m Testing Company: Air Pollution Testing, Inc.
5530 Marshall Street

Arvada CO 80002 Contact: Scott Bouchard
Phone: 303-420-5949
Fax: 303-420-5920
Email: sbouchard@airtest.net

Air Permit Number: Permit No. 3-0-205 Permitted Source ID/Name: WYGEN 1 Boiler 3
Permitted Maximum Process Rate: 100 MW Max. Normal Operation Process Rate: N/A Target Process Test Rate N/A

Description of the source (including control equipment). Please see the attachments for source or process flow diagram: Industry/SCC/NAIS 221112

Sampling Location Information:

Test Parameter Information: AFS #: Enter ARS ID FRS #: Enter FRS ID

SCC / Description 10100202 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 111 1740 1260 2 0 12 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

Hydrogen Chloride Method 26 2 60 0 Stack Exit Hydrogen Fluoride Method 26 2 60 0 Stack Exit Filterable Particulate Method 29 2 240 0 Stack Exit Antimony Method 29 2 240 0 Stack Exit Arsenic Method 29 2 240 0 Stack Exit


### Friday, January 21, 2011 Page 2 of 25

### 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. OTM-27 could not be used as requested due to the sampling device being too large to insert into the sampling port. EPA Method 5 was used instead.

Beryllium Method 29 2 240 0 Stack Exit Cadmium Method 29 2 240 0 Stack Exit Chromium Method 29 2 240 0 Stack Exit Lead Method 29 2 240 0 Stack Exit Manganese Method 29 2 240 0 Stack Exit Selenium Method 29 2 240 0 Stack Exit Nickel Method 29 2 240 0 Stack Exit O2 Method 3A O2 8 120 0 Stack Exit Co2 Method 3A CO2 8 120 0 Stack Exit Filterable Particulate Method 5/OTM-28 2 240 0 Use only for wet stacks. Delete OTM27/OTM28 test. Stack Exit

Inorganic (Aqueous)

Condensible Part. Method 5/OTM-28 2 240 0 Use only for wet stacks. Delete OTM27/OTM28 test. Stack Exit

Organic Condensible

Particulate Method 5/OTM-28 2 240 0 Use only for wet stacks. Delete OTM27/OTM28 test. Stack Exit

Total Particulate Method 5/OTM-28 2 240 0 Use only for wet stacks. Delete OTM27/OTM28 test. Stack Exit



### Friday, January 21, 2011 Page 3 of 25

### Sampling / Stack Data Results Summary



### Location Stack Exit - Method 1 - 4 Average
Run Number 1 2 3
Test Date 7/15/2010 7/15/2010 7/15/2010
Run Start Time 8:27:00 AM 10:48:00 AM 1:13:00 PM

Run Finish Time 10:22:00 AM 12:43:00 PM 3:08:00 PM

Net Run Time, minutes 120 120 120 Dry Gas Meter Volume Sampled, dscf 68.690 66.589 69.102 68.127 Moisture Content of Stack Gas, % 17.16 18.11 16.22 17.163 Moisture Saturation at Stack Gas Temperature, % 57.79 64.27 74.58 65.547 Carbon Dioxide, % 15.3 15.6 15.5 15.467 Oxygen, % 4.2 4.2 4.1 4.167 Average Stack Gas Temperature, °F 178.81 183.63 190.50 184.313 Dry Volumetric Flow Rate, dry scfm 207,253.6 202,932.5 207,050.4 205,745.500 Actual Wet Volumetric Flue Gas Flow Rate, acfm 352,119.8 351,273.1 354,055.2 352,482.700 Percent Isokinetic of Sampling Rate, % F-Factor, dscfm/MMBtu @ %O2 9820 9820 9820 9,820.000
Fw 0 0 0 0.000
Fc 0 0 0 0.000



### Location Stack Exit - Method 10 Average Run Number 1 2 3
Test Date 7/15/2010 7/15/2010 7/15/2010
Run Start Time 8:27:00 AM 10:48:00 AM 1:13:00 PM

Run Finish Time 10:27:00 AM 12:48:00 PM 3:13:00 PM

Carbon Dioxide, % 15.3 15.6 15.5 15.467 Oxygen, % 4.2 4.2 4.1 4.167 Dry Volumetric Flow Rate, dry scfm 206128 205181 207216 206,175.000 F-Factor, dscfm/MMBtu @ %O2 9820 9820 9820 9,820.000 Moisture, % 17.2 18.1 16.2 17.167 Fuel Type Override Override Override
Fw 0 0 0 0.000
Fc 0 0 0 0.000



### Friday, January 21, 2011 Page 4 of 25

### Location Stack Exit - Method 25A Average

Run Number 1 2 3
Test Date 7/15/2010 7/15/2010 7/15/2010
Run Start Time 8:27:00 AM 10:48:00 AM 1:13:00 PM

Run Finish Time 10:27:00 AM 12:48:00 PM 3:13:00 PM

Carbon Dioxide, % 15.3 15.6 15.5 15.467 Oxygen, % 4.2 4.2 4.1 4.167 Dry Volumetric Flow Rate, dry scfm 206128 205181 207216 206,175.000 F-Factor, dscfm/MMBtu @ %O2 9820 9820 9820 9,820.000 Moisture, % 17.2 18.1 16.2 17.167 Fuel Type Override Override Override
Fw 0 0 0 0.000
Fc 0 0 0 0.000



### Location Stack Exit - Method 26 Average Run Number 1 2
Test Date 6/30/2010 6/30/2010
Run Start Time 9:43:00 AM 3:35:00 PM
Run Finish Time 10:38:00 AM 4:30:00 PM Net Run Time, minutes 60 60 Dry Gas Meter Volume Sampled, dscf 1.729 1.583 1.656 Moisture Content of Stack Gas, % 15.20 18.11 16.655 Moisture Saturation at Stack Gas Temperature, % 65.30 67.84 66.570 Carbon Dioxide, % 15.5 15.7 15.600 Oxygen, % 3.8 3.7 3.750 Average Stack Gas Temperature, °F 183.75 185.50 184.625 Dry Volumetric Flow Rate, dry scfm 237,694.5 221,421.0 229,557.750 Actual Wet Volumetric Flue Gas Flow Rate, acfm 402,722.2 389,537.3 396,129.750 Percent Isokinetic of Sampling Rate, % F-Factor, dscfm/MMBtu @ %O2 9820 9820 9,820.000
Fw 0 0 0.000
Fc 0 0 0.000



### Friday, January 21, 2011 Page 5 of 25

### Location Stack Exit - Method 29 Average

Run Number 1 2
Test Date 6/30/2010 6/30/2010
Run Start Time 6:44:00 AM 12:36:00 PM
Run Finish Time 10:32:00 AM 4:39:00 PM Net Run Time, minutes 240 240 Dry Gas Meter Volume Sampled, dscf 180.129 168.889 174.509 Moisture Content of Stack Gas, % 15.02 17.32 16.170 Moisture Saturation at Stack Gas Temperature, % 65.30 67.84 66.570 Carbon Dioxide, % 15.5 15.7 15.600 Oxygen, % 3.8 3.7 3.750 Average Stack Gas Temperature, °F 183.75 185.50 184.625 Dry Volumetric Flow Rate, dry scfm 238,103.7 223,163.6 230,633.650 Actual Wet Volumetric Flue Gas Flow Rate, acfm 402,560.9 388,851.9 395,706.400 Percent Isokinetic of Sampling Rate, % 106.5 106.5 106.500 F-Factor, dscfm/MMBtu @ %O2 9820 9820 9,820.000
Fw 0 0 0.000
Fc 0 0 0.000



### Location Stack Exit - Method 3A CO2 Average
Run Number 1 2 3
Test Date 6/30/2010 6/30/2010 6/30/2010
Run Start Time 6:44:00 AM 8:49:00 AM 10:54:00 AM

Run Finish Time 8:44:00 AM 10:49:00 AM 12:54:00 PM

Carbon Dioxide, % 15.4 15.5 15.6 15.500 Oxygen, % 3.6 3.9 3.7 3.733 Dry Volumetric Flow Rate, dry scfm 238050 238050 223103 233,067.667 F-Factor, dscfm/MMBtu @ %O2 Moisture, % 15 15 17.4 15.800 Fuel Type
Fw
Fc



### Friday, January 21, 2011 Page 6 of 25

### Location Stack Exit - Method 3A CO2 3 Average

Run Number
Test Date
Run Start Time
Run Finish Time Carbon Dioxide, % Oxygen, % Dry Volumetric Flow Rate, dry scfm F-Factor, dscfm/MMBtu @ %O2 Moisture, % Fuel Type
Fw
Fc



### Location Stack Exit - Method 3A CO2 3 6 Average Run Number
Test Date
Run Start Time
Run Finish Time Carbon Dioxide, % Oxygen, % Dry Volumetric Flow Rate, dry scfm F-Factor, dscfm/MMBtu @ %O2 Moisture, % Fuel Type
Fw
Fc



### Friday, January 21, 2011 Page 7 of 25

### Location Stack Exit - Method 3A O2 Average

Run Number
Test Date
Run Start Time
Run Finish Time Carbon Dioxide, % Oxygen, % Dry Volumetric Flow Rate, dry scfm F-Factor, dscfm/MMBtu @ %O2 Moisture, % Fuel Type
Fw
Fc



### Location Stack Exit - Method 3A O2 3 Average Run Number
Test Date
Run Start Time
Run Finish Time Carbon Dioxide, % Oxygen, % Dry Volumetric Flow Rate, dry scfm F-Factor, dscfm/MMBtu @ %O2 Moisture, % Fuel Type
Fw
Fc



### Friday, January 21, 2011 Page 8 of 25

### Location Stack Exit - Method 3A O2 3 6 Average

Run Number
Test Date
Run Start Time
Run Finish Time Carbon Dioxide, % Oxygen, % Dry Volumetric Flow Rate, dry scfm F-Factor, dscfm/MMBtu @ %O2 Moisture, % Fuel Type
Fw
Fc



### Location Stack Exit - Method 5/OTM-28 Average Run Number 1 2
Test Date 6/30/2010 6/30/2010
Run Start Time 6:44:00 AM 12:36:00 PM
Run Finish Time 10:32:00 AM 4:39:00 PM Net Run Time, minutes 240 240 Dry Gas Meter Volume Sampled, dscf 161.695 159.754 160.725 Moisture Content of Stack Gas, % 15.73 8.96 12.345 Moisture Saturation at Stack Gas Temperature, % 67.73 69.59 68.660 Carbon Dioxide, % 15.5 15.7 15.600 Oxygen, % 3.8 3.7 3.750 Average Stack Gas Temperature, °F 185.42 186.67 186.045 Dry Volumetric Flow Rate, dry scfm 214,085.4 230,226.9 222,156.150 Actual Wet Volumetric Flue Gas Flow Rate, acfm 365,949.8 364,982.1 365,465.950 Percent Isokinetic of Sampling Rate, % 102.0 93.7 97.850 F-Factor, dscfm/MMBtu @ %O2 9820 9820 9,820.000
Fw 0 0 0.000
Fc 0 0 0.000



### Friday, January 21, 2011 Page 9 of 25

### Emissions Summary



### Location: Stack Exit - Method 10 Compound: Carbon Monoxide Average Run 1 2 3 lb/mmBtuO2 3.76E-02 4.59E-02 5.74E-02 0.047 ppm 4.21E+01 5.14E+01 6.46E+01 52.700 ppm@7%O2 3.50E+01 4.28E+01 5.34E+01 43.733



### Location: Stack Exit - Method 25A Compound: Total organic compounds (TOC) as Average Run 1 2 3 lb/mmBtuO2 1.35E-02 1.25E-02 1.34E-02 0.013 ppm 9.59E+00 8.88E+00 9.55E+00 9.340 ppm@7%O2 7.98E+00 7.39E+00 7.90E+00 7.757



### Location: Stack Exit - Method 26 Compound: Hydrogen Chloride Average RunNumber 1 2 Mass_mg 0.0117 0.00807 0.010 lb/mmBtuO2 1.79E-04 1.34E-04 0.000


### Compound: Hydrogen Fluoride Average RunNumber 1 2 Mass_mg 0.0292 0.0202 0.025 lb/mmBtuO2 4.47E-04 3.36E-04 0.000



### Location: Stack Exit - Method 29 Compound: Antimony Average RunNumber 1 2 Mass_mg 0.000067 0.000145 0.000 Elb/hr 1.17E-05 2.53E-05 0.000 lb/mmBtuO2 9.84E-09 2.26E-08 0.000 mg/dscm 1.31E-05 3.03E-05 0.000 mg/dscm@7%O2 1.06E-05 2.45E-05 0.000


### Compound: Arsenic Average RunNumber 1 2 Mass_mg 0.00015 0.001275 0.001 Elb/hr 2.62E-05 2.23E-04 0.000 lb/mmBtuO2 2.20E-08 1.99E-07 0.000 mg/dscm 2.94E-05 2.67E-04 0.000 mg/dscm@7%O2 2.39E-05 2.16E-04 0.000


### Compound: Beryllium Average


### Friday, January 21, 2011 Page 10 of 25RunNumber 1 2 Mass_mg 0.00003 0.000028 0.000 Elb/hr 5.25E-06 4.89E-06 0.000 lb/mmBtuO2 4.41E-09 4.36E-09 0.000 mg/dscm 5.88E-06 5.86E-06 0.000 mg/dscm@7%O2 4.78E-06 4.74E-06 0.000


### Compound: Cadmium Average RunNumber 1 2 Mass_mg 0.00016 0.000446 0.000 Elb/hr 2.80E-05 7.80E-05 0.000 lb/mmBtuO2 2.35E-08 6.95E-08 0.000 mg/dscm 3.14E-05 9.33E-05 0.000 mg/dscm@7%O2 2.55E-05 7.54E-05 0.000


### Compound: Chromium Average RunNumber 1 2 Mass_mg 0.00329 0.00255 0.003 Elb/hr 5.75E-04 4.46E-04 0.001 lb/mmBtuO2 4.83E-07 3.97E-07 0.000 mg/dscm 6.45E-04 5.33E-04 0.001 mg/dscm@7%O2 5.24E-04 4.31E-04 0.000


### Compound: Filterable Particulate Average RunNumber 1 2 Mass_mg 8.75 2.7 5.725 Elb/hr 1.53E+00 4.72E-01 1.001 lb/mmBtuO2 1.29E-03 4.21E-04 0.001 mg/dscm 1.72E+00 5.65E-01 1.143 mg/dscm@7%O2 1.40E+00 4.57E-01 0.929


### Compound: Lead Average RunNumber 1 2 Mass_mg 0.00206 0.00183 0.002 Elb/hr 3.60E-04 3.20E-04 0.000 lb/mmBtuO2 3.03E-07 2.85E-07 0.000 mg/dscm 4.04E-04 3.83E-04 0.000 mg/dscm@7%O2 3.28E-04 3.10E-04 0.000


### Compound: Manganese Average RunNumber 1 2 Mass_mg 0.0026 0.00243 0.003 Elb/hr 4.55E-04 4.25E-04 0.000 lb/mmBtuO2 3.82E-07 3.79E-07 0.000 mg/dscm 5.10E-04 5.08E-04 0.001 mg/dscm@7%O2 4.15E-04 4.11E-04 0.000


### Compound: Nickel Average



### Friday, January 21, 2011 Page 11 of 25

### Process Run Data RunNumber 1 2 Mass_mg 0.00468 0.00403 0.004 Elb/hr 8.18E-04 7.04E-04 0.001 lb/mmBtuO2 6.87E-07 6.28E-07 0.000 mg/dscm 9.18E-04 8.43E-04 0.001 mg/dscm@7%O2 7.46E-04 6.81E-04 0.001


### Compound: Selenium Average RunNumber 1 2 Mass_mg 0.00052 0.00052 0.001 Elb/hr 9.09E-05 9.09E-05 0.000 lb/mmBtuO2 7.64E-08 8.10E-08 0.000 mg/dscm 1.02E-04 1.09E-04 0.000 mg/dscm@7%O2 8.29E-05 8.81E-05 0.000



### Location: Stack Exit - Method 5/OTM-28 Compound: Filterable Particulate Average RunNumber 1 2 Mass_mg 5.5 4.25 4.875 mg/dscm 1.20E+00 9.40E-01 1.070


### Compound: Inorganic (Aqueous) Condensible Pa Average RunNumber 1 2 Mass_mg 160.3 73.8 117.050 mg/dscm 3.50E+01 1.63E+01 25.650


### Compound: Organic Condensible Particulate Average RunNumber 1 2 Mass_mg 3.4 1.9 2.650 mg/dscm 7.43E-01 4.20E-01 0.582


### Compound: Total Particulate Average RunNumber 1 2 Mass_mg 169.2 79.95 124.575 mg/dscm 3.70E+01 1.77E+01 27.350



### Friday, January 21, 2011 Page 12 of 25

### Process Run Data

APCD Run Data

Process Lab Run Data 

### Run Name Value UOM Comments Target Value 1 Coal Firing Rate 0 0


### 2 Coal Firing Rate 0 0
3 Coal Firing Rate 0 0
1 Average Heat Input 0 MMBtu/hr 0


### 2 Average Heat Input 0 MMBtu/hr 0
3 Average Heat Input 0 MMBtu/hr 0
1 Steam Output 0 1000 lb steam/hr 0


### 2 Steam Output 0 1000 lb steam/hr 0
3 Steam Output 0 1000 lb steam/hr 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 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


### 1 Unit Gross Electrical Output 0 MW 0
1 Unit Net Electric Generation 0 MWh 0

Run Name Value UOM Comments Target Value 

### 1 LOW NOX BURNERS 0 0
1 SCR (SELECTIVE CATALYTIC REDUCTION) 0 0
1 DRY SCRUBBER 0 0


### 1 BAGHOUSE 0 0

Friday, January 21, 2011 Page 13 of 25

### Sampling / Stack Data Results Detail



### Location Stack Exit - Method 1 - 4 Average Run Number 1 2 3 Test Date 7/15/2010 7/15/2010 7/15/2010 Run Start Time 8:27:00 AM 10:48:00 AM 1:13:00 PM Run Finish Time 10:22:00 AM 12:43:00 PM 3:08:00 PM Net Traversing Points 24 24 24 Net Run Time, minutes 120 120 120 Nozzle Diameter, inches Pitot Tube Coefficient 0.84 0.84 0.84 0.840 Dry Gas Meter Calibration Factor 0.996 0.996 0.996 0.996 Barometric Pressure, inches of Mercury 25.66 25.66 25.66 25.660 Average Orifice Meter Differential, inches H2O 1.00 1.00 1.00 1.000 Dry Gas Meter Volume Sampled, cubic feet 80.784 80.668 84.565 82.006 Average Dry Gas Meter Temperature, °F 71.94 87.94 93.52 84.467 Dry Gas Meter Volume Sampled, dscf 68.690 66.589 69.102 68.127 Total Moisture Liquid collected, g 302.4 312.9 284.2 299.833 Volume of Water Vapor, standard cubic feet 14.23 14.73 13.38 14.113 Moisture Content of Stack Gas, % 17.16 18.11 16.22 17.163 Moisture Saturation at Stack Gas Temperature, % 57.79 64.27 74.58 65.547 Dry Mole Fraction 0.8284 0.8189 0.8378 0.828 Carbon Dioxide, % 15.3 15.6 15.5 15.467 Oxygen, % 4.2 4.2 4.1 4.167 Carbon Monoxide & Nitrogen, % 80.5 80.2 80.4 80.367 Fuel Factor 1.09 1.07 1.08 Dry Molecular Weight, lb/lb-Mole 30.62 30.66 30.64 30.640 Wet Molecular weight, lb/lb-Mole 28.45 28.37 28.59 28.470 Flue Gas Static Pressure, inches of H2O 0.87 0.98 0.98 0.943 Absolute Flue Gas Pressure, inches of Mercury 25.72 25.73 25.73 25.727 Average Stack Gas Temperature, °F 178.81 183.63 190.50 184.313 Average Velocity Head, inches of H2O 1.6941860480 1082 1.669131327

63553 1.690672404

5116 1.685

Average Stack Gas Velocity, feet/second 87.33 87.12 87.81 87.420 Stack Cross-Sectional Area, square feet 67.201 67.201 67.201 67.201 Dry Volumetric Flow Rate, dry scfm 207,253.6 202,932.5 207,050.4 205,745.500 Actual Wet Volumetric Flue Gas Flow Rate, acfm 352,119.8 351,273.1 354,055.2 352,482.700 Percent Isokinetic of Sampling Rate, % Percent Excess Air, % 24.6 24.7 23.9 24.400 F-Factor, dscfm/MMBtu @ %O2 9820 9820 9820 9,820.000 Round Duct Diameter, inches 111 111 111 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, January 21, 2011 Page 14 of 25

### Location Stack Exit - Method 10 Average

Run Number 1 2 3 Test Date 7/15/2010 7/15/2010 7/15/2010 Run Start Time 8:27:00 AM 10:48:00 AM 1:13:00 PM Run Finish Time 10:27:00 AM 12:48:00 PM 3:13:00 PM Carbon Dioxide, % 15.3 15.6 15.5 15.467 Oxygen, % 4.2 4.2 4.1 4.167 Fuel Factor 1.09 1.07 1.08 Dry Volumetric Flow Rate, dry scfm 206128 205181 207216 206,175.000 F-Factor, dscfm/MMBtu @ %O2 9820 9820 9820 9,820.000 Moisture, % 17.2 18.1 16.2 17.167 Analyzer Make TECO TECO TECO Analyzer Model 48C 48C 48C Analyzer Serial Number 48-21571-198 48-21571- 198 48-21571-198

Operating Range 182 182 182 182.000 Operating Units ppm ppm ppm No. Readings/Avg. 6 6 6 6.000 Calibration Set 101 101 101 101.000 Calibration Pre Zero Cylinder ID CC-131138 CC-131138 CC-131138 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 ALM059451 ALM059451 ALM059451 Calibration Pre High Cylinder Instrument Response 78.4 78.5 78.3 78.400 Calibration Pre High Cylinder Bias -0.33 -0.27 -0.38 -0.327 Calibration Pre High Cylinder Drift 0 0 0 0.000 Calibration Post Zero Cylinder ID CC-131138 CC-131138 CC-131138 Calibration Post Zero Cylinder Instrument Response 0 0 -0.1 -0.033 Calibration Post Zero Cylinder Bias 0 0 -0.05 -0.017 Calibration Post Zero Cylinder Drift 0 0 0.05 0.017 Calibration Post High Cylinder ID ALM059451 ALM059451 ALM059451 Calibration Post High Cylinder Instrument Response 78.5 78.3 77.9 78.233 Calibration Post High Cylinder Bias -0.27 -0.38 -0.6 -0.417 Calibration Post High Cylinder Drift 0.06 0.11 0.22 0.130 Cavg 42.3 51.6 64.6 52.833 Cavg Units ppmvd ppmvd ppmvd Cgas 42.1113 51.4026 64.6086 52.708 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, January 21, 2011 Page 15 of 25

### Location Stack Exit - Method 25A Average

Run Number 1 2 3 Test Date 7/15/2010 7/15/2010 7/15/2010 Run Start Time 8:27:00 AM 10:48:00 AM 1:13:00 PM Run Finish Time 10:27:00 AM 12:48:00 PM 3:13:00 PM Carbon Dioxide, % 15.3 15.6 15.5 15.467 Oxygen, % 4.2 4.2 4.1 4.167 Fuel Factor 1.09 1.07 1.08 Dry Volumetric Flow Rate, dry scfm 206128 205181 207216 206,175.000 F-Factor, dscfm/MMBtu @ %O2 9820 9820 9820 9,820.000 Moisture, % 17.2 18.1 16.2 17.167 Analyzer Make TECO TECO TECO Analyzer Model 55i 55i 55i Analyzer Serial Number Operating Range 100 100 100 100.000 Operating Units ppm ppm ppm No. Readings/Avg. 6 6 6 6.000 Calibration Set 251 251 251 251.000 Calibration Pre Zero Cylinder ID CC-131138 CC-131138 CC-131138 Calibration Pre Zero Cylinder Instrument Response 0 0.1 0.2 0.100 Calibration Pre Zero Cylinder Bias 0 0.1 0.2 0.100 Calibration Pre Zero Cylinder Drift 0 0 0 0.000 Calibration Pre High Cylinder ID ALM052218 ALM052218 ALM052218 Calibration Pre High Cylinder Instrument Response 30.6 30.5 30.3 30.467 Calibration Pre High Cylinder Bias 0 -0.1 -0.3 -0.133 Calibration Pre High Cylinder Drift 0 0 0 0.000 Calibration Post Zero Cylinder ID CC-131138 CC-131138 CC-131138 Calibration Post Zero Cylinder Instrument Response 0.1 0.2 0.1 0.133 Calibration Post Zero Cylinder Bias 0.1 0.2 0.1 0.133 Calibration Post Zero Cylinder Drift 0.1 0.1 0.1 0.100 Calibration Post High Cylinder ID ALM052218 ALM052218 ALM052218 Calibration Post High Cylinder Instrument Response 30.5 30.3 30.6 30.467 Calibration Post High Cylinder Bias -0.1 -0.3 0 -0.133 Calibration Post High Cylinder Drift 0.1 0.2 0.3 0.200 Cavg 9.8 9.1 9.8 9.567 Cavg Units ppmvd ppmvd ppmvd Cgas 9.5902 8.876 9.5545 9.340 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, January 21, 2011 Page 16 of 25

### Location Stack Exit - Method 26 Average

Run Number 1 2 Test Date 6/30/2010 6/30/2010 Run Start Time 9:43:00 AM 3:35:00 PM Run Finish Time 10:38:00 AM 4:30:00 PM Net Traversing Points 12 12 Net Run Time, minutes 60 60 Nozzle Diameter, inches Pitot Tube Coefficient 0.82 0.82 0.820 Dry Gas Meter Calibration Factor 0.982 0.982 0.982 Barometric Pressure, inches of Mercury 25.48 25.48 25.480 Average Orifice Meter Differential, inches H2O 0.00 0.00 0.000 Dry Gas Meter Volume Sampled, cubic feet 2.126 2.023 2.075 Average Dry Gas Meter Temperature, °F 82.83 104.17 93.500 Dry Gas Meter Volume Sampled, dscf 1.729 1.583 1.656 Total Moisture Liquid collected, g 6.5 7.4 6.950 Volume of Water Vapor, standard cubic feet 0.31 0.35 0.330 Moisture Content of Stack Gas, % 15.20 18.11 16.655 Moisture Saturation at Stack Gas Temperature, % 65.30 67.84 66.570 Dry Mole Fraction 0.848 0.8189 0.833 Carbon Dioxide, % 15.5 15.7 15.600 Oxygen, % 3.8 3.7 3.750 Carbon Monoxide & Nitrogen, % 80.7 80.6 80.650 Fuel Factor 1.10 1.10 Dry Molecular Weight, lb/lb-Mole 30.63 30.66 30.645 Wet Molecular weight, lb/lb-Mole 28.71 28.37 28.540 Flue Gas Static Pressure, inches of H2O -1.2 -1.2 -1.200 Absolute Flue Gas Pressure, inches of Mercury 25.39 25.39 25.390 Average Stack Gas Temperature, °F 183.75 185.50 184.625 Average Velocity Head, inches of H2O 2.2985280515 8804 2.119202917

50089 2.209

Average Stack Gas Velocity, feet/second 99.88 96.61 98.245 Stack Cross-Sectional Area, square feet 67.201 67.201 67.201 Dry Volumetric Flow Rate, dry scfm 237,694.5 221,421.0 229,557.750 Actual Wet Volumetric Flue Gas Flow Rate, acfm 402,722.2 389,537.3 396,129.750 Percent Isokinetic of Sampling Rate, % Percent Excess Air, % 21.7 21.0 21.350 F-Factor, dscfm/MMBtu @ %O2 9820 9820 9,820.000 Round Duct Diameter, inches 111 111 Rectangular Duct Width, inches 0 0 Rectangular Duct Length, inches 0 0 Fw 0 0 0.000 Fc 0 0 0.000



### Friday, January 21, 2011 Page 17 of 25

### Location Stack Exit - Method 29 Average

Run Number 1 2 Test Date 6/30/2010 6/30/2010 Run Start Time 6:44:00 AM 12:36:00 PM Run Finish Time 10:32:00 AM 4:39:00 PM Net Traversing Points 12 12 Net Run Time, minutes 240 240 Nozzle Diameter, inches 0.191 0.191 0.191 Pitot Tube Coefficient 0.82 0.82 0.820 Dry Gas Meter Calibration Factor 1.008 1.008 1.008 Barometric Pressure, inches of Mercury 25.48 25.48 25.480 Average Orifice Meter Differential, inches H2O 2.17 2.03 2.100 Dry Gas Meter Volume Sampled, cubic feet 215.049 205.708 210.379 Average Dry Gas Meter Temperature, °F 84.50 95.29 89.895 Dry Gas Meter Volume Sampled, dscf 180.129 168.889 174.509 Total Moisture Liquid collected, g 676.5 751.9 714.200 Volume of Water Vapor, standard cubic feet 31.84 35.39 33.615 Moisture Content of Stack Gas, % 15.02 17.32 16.170 Moisture Saturation at Stack Gas Temperature, % 65.30 67.84 66.570 Dry Mole Fraction 0.8498 0.8268 0.838 Carbon Dioxide, % 15.5 15.7 15.600 Oxygen, % 3.8 3.7 3.750 Carbon Monoxide & Nitrogen, % 80.7 80.6 80.650 Fuel Factor 1.10 1.10 Dry Molecular Weight, lb/lb-Mole 30.63 30.66 30.645 Wet Molecular weight, lb/lb-Mole 28.73 28.47 28.600 Flue Gas Static Pressure, inches of H2O -1.2 -1.2 -1.200 Absolute Flue Gas Pressure, inches of Mercury 25.39 25.39 25.390 Average Stack Gas Temperature, °F 183.75 185.50 184.625 Average Velocity Head, inches of H2O 2.2985280515 8804 2.119202917

50089 2.209

Average Stack Gas Velocity, feet/second 99.84 96.44 98.140 Stack Cross-Sectional Area, square feet 67.201 67.201 67.201 Dry Volumetric Flow Rate, dry scfm 238,103.7 223,163.6 230,633.650 Actual Wet Volumetric Flue Gas Flow Rate, acfm 402,560.9 388,851.9 395,706.400 Percent Isokinetic of Sampling Rate, % 106.5 106.5 106.500 Percent Excess Air, % 21.7 21.0 21.350 F-Factor, dscfm/MMBtu @ %O2 9820 9820 9,820.000 Round Duct Diameter, inches 111 111 Rectangular Duct Width, inches 0 0 Rectangular Duct Length, inches 0 0 Fw 0 0 0.000 Fc 0 0 0.000



### Friday, January 21, 2011 Page 18 of 25

### Location Stack Exit - Method 3A CO2 Average

Run Number 1 2 3 Test Date 6/30/2010 6/30/2010 6/30/2010 Run Start Time 6:44:00 AM 8:49:00 AM 10:54:00 AM Run Finish Time 8:44:00 AM 10:49:00 AM 12:54:00 PM Carbon Dioxide, % 15.4 15.5 15.6 15.500 Oxygen, % 3.6 3.9 3.7 3.733 Fuel Factor Dry Volumetric Flow Rate, dry scfm 238050 238050 223103 233,067.667 F-Factor, dscfm/MMBtu @ %O2 Moisture, % 15 15 17.4 15.800 Analyzer Make Servomex Servomex Servomex Analyzer Model 1415C 1415C 1415C Analyzer Serial Number 272 272 272 272.000 Operating Range 19.2 19.2 19.2 19.200 Operating Units % % % No. Readings/Avg. 6 6 6 6.000 Calibration Set 31 31 31 31.000 Calibration Pre Zero Cylinder ID CC-131138 CC-131138 CC-131138 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 ALM024737- CO2 ALM024737

-CO2 ALM024737-

CO2 Calibration Pre High Cylinder Instrument Response 10.1 10.1 10.1 10.100 Calibration Pre High Cylinder Bias 0 0 0 0.000 Calibration Pre High Cylinder Drift 0 0 0 0.000 Calibration Post Zero Cylinder ID CC-131138 CC-131138 CC-131138 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 ALM024737- CO2 ALM024737

-CO2 ALM024737-

CO2 Calibration Post High Cylinder Instrument Response Calibration Post High Cylinder Bias Calibration Post High Cylinder Drift Cavg Cavg Units Cgas Cgas Units Fuel Type Fw Fc Cgasw Cgasw Units



### Friday, January 21, 2011 Page 19 of 25

### Location Stack Exit - Method 3A CO2 3 Average

Run Number Test Date Run Start Time Run Finish Time Carbon Dioxide, % Oxygen, % Fuel Factor Dry Volumetric Flow Rate, dry scfm F-Factor, dscfm/MMBtu @ %O2 Moisture, % Analyzer Make Analyzer Model Analyzer Serial Number Operating Range Operating Units No. Readings/Avg. Calibration Set Calibration Pre Zero Cylinder ID Calibration Pre Zero Cylinder Instrument Response Calibration Pre Zero Cylinder Bias Calibration Pre Zero Cylinder Drift Calibration Pre High Cylinder ID Calibration Pre High Cylinder Instrument Response Calibration Pre High Cylinder Bias Calibration Pre High Cylinder Drift Calibration Post Zero Cylinder ID Calibration Post Zero Cylinder Instrument Response Calibration Post Zero Cylinder Bias Calibration Post Zero Cylinder Drift Calibration Post High Cylinder ID Calibration Post High Cylinder Instrument Response Calibration Post High Cylinder Bias Calibration Post High Cylinder Drift Cavg Cavg Units Cgas Cgas Units Fuel Type Fw Fc Cgasw Cgasw Units



### Friday, January 21, 2011 Page 20 of 25

### Location Stack Exit - Method 3A CO2 3 6 Average

Run Number Test Date Run Start Time Run Finish Time Carbon Dioxide, % Oxygen, % Fuel Factor Dry Volumetric Flow Rate, dry scfm F-Factor, dscfm/MMBtu @ %O2 Moisture, % Analyzer Make Analyzer Model Analyzer Serial Number Operating Range Operating Units No. Readings/Avg. Calibration Set Calibration Pre Zero Cylinder ID Calibration Pre Zero Cylinder Instrument Response Calibration Pre Zero Cylinder Bias Calibration Pre Zero Cylinder Drift Calibration Pre High Cylinder ID Calibration Pre High Cylinder Instrument Response Calibration Pre High Cylinder Bias Calibration Pre High Cylinder Drift Calibration Post Zero Cylinder ID Calibration Post Zero Cylinder Instrument Response Calibration Post Zero Cylinder Bias Calibration Post Zero Cylinder Drift Calibration Post High Cylinder ID Calibration Post High Cylinder Instrument Response Calibration Post High Cylinder Bias Calibration Post High Cylinder Drift Cavg Cavg Units Cgas Cgas Units Fuel Type Fw Fc Cgasw Cgasw Units



### Friday, January 21, 2011 Page 21 of 25

### Location Stack Exit - Method 3A O2 Average

Run Number Test Date Run Start Time Run Finish Time Carbon Dioxide, % Oxygen, % Fuel Factor Dry Volumetric Flow Rate, dry scfm F-Factor, dscfm/MMBtu @ %O2 Moisture, % Analyzer Make Analyzer Model Analyzer Serial Number Operating Range Operating Units No. Readings/Avg. Calibration Set Calibration Pre Zero Cylinder ID Calibration Pre Zero Cylinder Instrument Response Calibration Pre Zero Cylinder Bias Calibration Pre Zero Cylinder Drift Calibration Pre High Cylinder ID Calibration Pre High Cylinder Instrument Response Calibration Pre High Cylinder Bias Calibration Pre High Cylinder Drift Calibration Post Zero Cylinder ID Calibration Post Zero Cylinder Instrument Response Calibration Post Zero Cylinder Bias Calibration Post Zero Cylinder Drift Calibration Post High Cylinder ID Calibration Post High Cylinder Instrument Response Calibration Post High Cylinder Bias Calibration Post High Cylinder Drift Cavg Cavg Units Cgas Cgas Units Fuel Type Fw Fc Cgasw Cgasw Units



### Friday, January 21, 2011 Page 22 of 25

### Location Stack Exit - Method 3A O2 3 Average

Run Number Test Date Run Start Time Run Finish Time Carbon Dioxide, % Oxygen, % Fuel Factor Dry Volumetric Flow Rate, dry scfm F-Factor, dscfm/MMBtu @ %O2 Moisture, % Analyzer Make Analyzer Model Analyzer Serial Number Operating Range Operating Units No. Readings/Avg. Calibration Set Calibration Pre Zero Cylinder ID Calibration Pre Zero Cylinder Instrument Response Calibration Pre Zero Cylinder Bias Calibration Pre Zero Cylinder Drift Calibration Pre High Cylinder ID Calibration Pre High Cylinder Instrument Response Calibration Pre High Cylinder Bias Calibration Pre High Cylinder Drift Calibration Post Zero Cylinder ID Calibration Post Zero Cylinder Instrument Response Calibration Post Zero Cylinder Bias Calibration Post Zero Cylinder Drift Calibration Post High Cylinder ID Calibration Post High Cylinder Instrument Response Calibration Post High Cylinder Bias Calibration Post High Cylinder Drift Cavg Cavg Units Cgas Cgas Units Fuel Type Fw Fc Cgasw Cgasw Units



### Friday, January 21, 2011 Page 23 of 25

### Location Stack Exit - Method 3A O2 3 6 Average

Run Number Test Date Run Start Time Run Finish Time Carbon Dioxide, % Oxygen, % Fuel Factor Dry Volumetric Flow Rate, dry scfm F-Factor, dscfm/MMBtu @ %O2 Moisture, % Analyzer Make Analyzer Model Analyzer Serial Number Operating Range Operating Units No. Readings/Avg. Calibration Set Calibration Pre Zero Cylinder ID Calibration Pre Zero Cylinder Instrument Response Calibration Pre Zero Cylinder Bias Calibration Pre Zero Cylinder Drift Calibration Pre High Cylinder ID Calibration Pre High Cylinder Instrument Response Calibration Pre High Cylinder Bias Calibration Pre High Cylinder Drift Calibration Post Zero Cylinder ID Calibration Post Zero Cylinder Instrument Response Calibration Post Zero Cylinder Bias Calibration Post Zero Cylinder Drift Calibration Post High Cylinder ID Calibration Post High Cylinder Instrument Response Calibration Post High Cylinder Bias Calibration Post High Cylinder Drift Cavg Cavg Units Cgas Cgas Units Fuel Type Fw Fc Cgasw Cgasw Units



### Friday, January 21, 2011 Page 24 of 25

### Location Stack Exit - Method 5/OTM-28 Average

Run Number 1 2 Test Date 6/30/2010 6/30/2010 Run Start Time 6:44:00 AM 12:36:00 PM Run Finish Time 10:32:00 AM 4:39:00 PM Net Traversing Points 12 12 Net Run Time, minutes 240 240 Nozzle Diameter, inches 0.195 0.195 0.195 Pitot Tube Coefficient 0.83 0.83 0.830 Dry Gas Meter Calibration Factor 0.996 0.996 0.996 Barometric Pressure, inches of Mercury 25.48 25.48 25.480 Average Orifice Meter Differential, inches H2O 1.59 1.63 1.610 Dry Gas Meter Volume Sampled, cubic feet 194.255 196.457 195.356 Average Dry Gas Meter Temperature, °F 80.50 93.33 86.915 Dry Gas Meter Volume Sampled, dscf 161.695 159.754 160.725 Total Moisture Liquid collected, g 641.3 334 487.650 Volume of Water Vapor, standard cubic feet 30.19 15.72 22.955 Moisture Content of Stack Gas, % 15.73 8.96 12.345 Moisture Saturation at Stack Gas Temperature, % 67.73 69.59 68.660 Dry Mole Fraction 0.8427 0.9104 0.877 Carbon Dioxide, % 15.5 15.7 15.600 Oxygen, % 3.8 3.7 3.750 Carbon Monoxide & Nitrogen, % 80.7 80.6 80.650 Fuel Factor 1.10 1.10 Dry Molecular Weight, lb/lb-Mole 30.63 30.66 30.645 Wet Molecular weight, lb/lb-Mole 28.64 29.53 29.085 Flue Gas Static Pressure, inches of H2O -1.2 -1.2 -1.200 Absolute Flue Gas Pressure, inches of Mercury 25.39 25.39 25.390 Average Stack Gas Temperature, °F 185.42 186.67 186.045 Average Velocity Head, inches of H2O 1.8431931315 5088 1.886890536

4507 1.865

Average Stack Gas Velocity, feet/second 90.76 90.52 90.640 Stack Cross-Sectional Area, square feet 67.201 67.201 67.201 Dry Volumetric Flow Rate, dry scfm 214,085.4 230,226.9 222,156.150 Actual Wet Volumetric Flue Gas Flow Rate, acfm 365,949.8 364,982.1 365,465.950 Percent Isokinetic of Sampling Rate, % 102.0 93.7 97.850 Percent Excess Air, % 21.7 21.0 21.350 F-Factor, dscfm/MMBtu @ %O2 9820 9820 9,820.000 Round Duct Diameter, inches 111 111 Rectangular Duct Width, inches 0 0 Rectangular Duct Length, inches 0 0 Fw 0 0 0.000 Fc 0 0 0.000



### Friday, January 21, 2011 Page 25 of 25