### Name: Mr. Patrick L. Pope

Title: Vice President & Chief Operating Offi Company: Nebraska Public Power District Sign Date: 6/17/2010 Name: Mr. Jeremy Miller Title: Lead Field Engineer Company:GE International, Inc. Sign Date: 6/17/2010 Permitted Facility Representative / Date Testing Company Representative / Date 

## Gerald Gentleman Station 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.

Wednesday, February 23, 2011 Page 1 of 13

### Gerald Gentleman Station
6/17/2010 Facility Information: NPPD Gerald Gentleman Station 6089 South Highway 25

Sutherland NE69165 Contact:Tom Brunz Phone: Fax: Email: Testing Company: General Electric International Inc. (GEII) 888 Industrial Blvd

Elmhurst IL60126 Contact:Jeff Daniels Phone:630-530-6655 Fax: Email:

Air Permit Number: N/A Permitted Source ID/Name: NPPD Gerald Gentleman Station 34385 Permitted Maximum Process Rate: 7538 mmbtu/hr 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: Fabric Filter Baghouse Industry/SCC/NAIS22112

Sampling Location Information:

Test Parameter Information: AFS #:3111100019 FRS #:110000606522

SCC / Description10100221 External Combustion Boilers - Electric Generation - Bituminous/Subbituminous Coal - Pulverized Coal: Wet 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 Unit 1 337.44 1754 2395 4 0 0 0 0

Target Parameter Test Method Number of

Test Runs Test Run

Duration Sample

Points Comments Location Total PM2.5 OTM - 27/28 3 345 0 Unit 1 Filterable Particulate OTM - 27/28 3 345 0 Unit 1 Organic Condensible

Particulate OTM - 27/28 3 345 0 Unit 1
Inorganic (Aqueous)

Condensible Part. OTM - 27/28 3 345 0 Unit 1

Filterable PM2.5 OTM - 27/28 3 345 0 Unit 1 Total Particulate OTM - 27/28 3 345 0 Unit 1


### Wednesday, February 23, 2011 Page 2 of 13

### Gerald Gentleman Station
6/17/2010

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.

Cadmium Method 29 3 240 0 Unit 1 Antimony Method 29 3 240 0 Unit 1 Beryllium Method 29 3 240 0 Unit 1 Chromium Method 29 3 240 0 Unit 1 Cobalt Method 29 3 240 0 Unit 1 Lead Method 29 3 240 0 Unit 1 Manganese Method 29 3 240 0 Unit 1 Nickel Method 29 3 240 0 Unit 1 Selenium Method 29 3 240 0 Unit 1 Arsenic Method 29 3 240 0 Unit 1 O2 Method 3A O2 3 360 0 Unit 1 Co2 Method 3A CO2 3 360 0 Unit 1 Filterable Particulate Method 5 3 240 0 Unit 1



### Wednesday, February 23, 2011 Page 3 of 13

### Gerald Gentleman Station
6/17/2010 Sampling / Stack Data Results Summary


### Location Unit 1 - Method 29 Average Run Number 1 2 3 Test Date 3/20/2010 3/20/2010 3/21/2010 Run Start Time 7:50:00 AM3:15:00 PM 7:45:00 AM Run Finish Time 12:23:00 PM7:30:00 PM 1:25:00 PM Net Run Time, minutes 240 240 240 Dry Gas Meter Volume Sampled, dscf 109.583 109.840 121.277 113.567 Moisture Content of Stack Gas, % 10.85 10.76 9.88 10.497 Moisture Saturation at Stack Gas Temperature, % 100.00 100.00 100.00 100.000 Carbon Dioxide, % 13.8 13.9 13.7 13.800 Oxygen, % 5.7 5.7 5.8 5.733 Average Stack Gas Temperature, °F 299.52 292.29 293.00 294.937 Dry Volumetric Flow Rate, dry scfm 1,385,826.11,389,047.0 1,475,781.91,416,885.00 0 Actual Wet Volumetric Flue Gas Flow Rate, acfm 2,539,064.02,518,197.0 2,397,094.12,484,785.03 3 Percent Isokinetic of Sampling Rate, % 101.8 101.8 105.8 103.133 F-Factor, dscfm/MMBtu @ %O2 9794 9794 9685 9,757.667 Fw 10640 10640 10640 10,640.000 Fc 1800 1800 1800 1,800.000



### Wednesday, February 23, 2011 Page 4 of 13

### Gerald Gentleman Station
6/17/2010
Location Unit 1 - Method 5 Average Run Number 1 2 3 Test Date 3/20/2010 3/20/2010 3/21/2010 Run Start Time 7:50:00 AM3:15:00 PM 7:45:00 AM Run Finish Time 12:23:00 PM7:30:00 PM 1:25:00 PM Net Run Time, minutes 240 240 240 Dry Gas Meter Volume Sampled, dscf 109.583 109.840 121.277 113.567 Moisture Content of Stack Gas, % 10.85 10.76 9.88 10.497 Moisture Saturation at Stack Gas Temperature, % 100.00 100.00 100.00 100.000 Carbon Dioxide, % 13.8 13.9 13.7 13.800 Oxygen, % 5.7 5.7 5.8 5.733 Average Stack Gas Temperature, °F 299.52 292.29 293.00 294.937 Dry Volumetric Flow Rate, dry scfm 1,385,826.11,389,047.0 1,475,781.91,416,885.00 0 Actual Wet Volumetric Flue Gas Flow Rate, acfm 2,539,064.02,518,197.0 2,397,094.12,484,785.03 3 Percent Isokinetic of Sampling Rate, % 101.8 101.8 105.8 103.133 F-Factor, dscfm/MMBtu @ %O2 9794 9794 9685 9,757.667 Fw 10640 10640 10640 10,640.000 Fc 1800 1800 1800 1,800.000



### Wednesday, February 23, 2011 Page 5 of 13

### Gerald Gentleman Station
6/17/2010
Location Unit 1 - OTM - 27/28 Average Run Number 1 2 3 Test Date 3/20/2010 3/20/2010 3/21/2010 Run Start Time 7:00:00 AM2:20:00 PM 7:05:00 AM Run Finish Time 1:28:00 PM8:46:45 PM 1:39:00 PM Net Run Time, minutes 346.25 355.75 362.25 Dry Gas Meter Volume Sampled, dscf 111.539 115.539 115.296 114.125 Moisture Content of Stack Gas, % 10.06 10.29 12.37 10.907 Moisture Saturation at Stack Gas Temperature, % 100.00 100.00 100.00 100.000 Carbon Dioxide, % 13.8 13.9 13.7 13.800 Oxygen, % 5.7 5.7 5.8 5.733 Average Stack Gas Temperature, °F 296.13 290.92 290.46 292.503 Dry Volumetric Flow Rate, dry scfm 1,433,229.01,427,062.3 1,401,235.21,420,508.83 3 Actual Wet Volumetric Flue Gas Flow Rate, acfm 2,591,231.52,568,874.0 2,605,391.22,588,498.90 0 Percent Isokinetic of Sampling Rate, % 106.5 107.9 104.9 106.433 F-Factor, dscfm/MMBtu @ %O2 9794 9794 9685 9,757.667 Fw 10640 10640 10640 10,640.000 Fc 1800 1800 1800 1,800.000



### Wednesday, February 23, 2011 Page 6 of 13

### Gerald Gentleman Station
6/17/2010 Emissions Summary


### Location: Unit 1 - Method 29 Compound: Antimony Average RunNumber 1 2 3 Mass_mg 0.0018 0.0018 0.0018 0.002 lb/mmBtuO2 4.88E-07 4.87E-07 4.39E-07 0.000 

### Compound: Arsenic Average RunNumber 1 2 3 Mass_mg 0.0018 0.0018 0.0018 0.002 lb/mmBtuO2 4.88E-07 4.87E-07 4.39E-07 0.000 

### Compound: Beryllium Average RunNumber 1 2 3 Mass_mg 0.00045 0.00045 0.00045 0.000 lb/mmBtuO2 1.22E-07 1.22E-07 1.10E-07 0.000 

### Compound: Cadmium Average RunNumber 1 2 3 Mass_mg 0.00051 0.00371 0.00045 0.002 lb/mmBtuO2 1.38E-07 1.00E-06 1.10E-07 0.000 

### Compound: Chromium Average RunNumber 1 2 3 Mass_mg 0.00135 0.00135 0.00135 0.001 lb/mmBtuO2 3.66E-07 3.65E-07 3.29E-07 0.000 

### Compound: Cobalt Average RunNumber 1 2 3 Mass_mg 0.00045 0.00045 0.00045 0.000 lb/mmBtuO2 1.22E-07 1.22E-07 1.10E-07 0.000 

### Compound: Lead Average RunNumber 1 2 3 Mass_mg 0.00212 0.0009 0.00251 0.002 lb/mmBtuO2 5.74E-07 2.43E-07 6.12E-07 0.000 

### Compound: Manganese Average RunNumber 1 2 3 Mass_mg 0.0028 0.0028 0.0028 0.003 lb/mmBtuO2 7.59E-07 7.57E-07 6.82E-07 0.000 

### Compound: Nickel Average



### Wednesday, February 23, 2011 Page 7 of 13

### Gerald Gentleman Station
6/17/2010 RunNumber 1 2 3 Mass_mg 0.0023 0.0023 0.0023 0.002 lb/mmBtuO2 6.23E-07 6.22E-07 5.60E-07 0.000 

### Compound: Selenium Average RunNumber 1 2 3 Mass_mg 0.0045 0.0045 0.0045 0.005 lb/mmBtuO2 1.22E-06 1.22E-06 1.10E-06 0.000



### Location: Unit 1 - Method 5 Compound: Filterable Particulate Average RunNumber 1 2 3 Mass_mg 2.1 1.3 5.1 2.833 lb/mmBtuO2 5.69E-04 3.51E-04 1.24E-03 0.001



### Location: Unit 1 - OTM - 27/28 

### Compound: Filterable Particulate Average RunNumber 1 2 3 Mass_mg 1.5 1.5 15 6.000 lb/mmBtuO2 3.99E-04 3.85E-04 3.84E-03 0.002 

### Compound: Filterable PM2.5 Average RunNumber 1 2 3 Mass_mg 1 1 1 1.000 lb/mmBtuO2 2.66E-04 2.57E-04 2.56E-04 0.000 

### Compound: Inorganic (Aqueous) Condensible Pa Average RunNumber 1 2 3 Mass_mg 16.4 17.9 18.3 17.533 lb/mmBtuO2 4.37E-03 4.60E-03 4.69E-03 0.005 

### Compound: Organic Condensible Particulate Average RunNumber 1 2 3 Mass_mg 1 0.8 0.7 0.833 lb/mmBtuO2 2.66E-04 2.06E-04 1.79E-04 0.000 

### Compound: Total Particulate Average RunNumber 1 2 3 Mass_mg 18.9 20.2 20.5 19.867 lb/mmBtuO2 5.03E-03 5.19E-03 5.25E-03 0.005 

### Compound: Total PM2.5 Average RunNumber 1 2 3 Mass_mg 18.4 19.7 20 19.367 lb/mmBtuO2 4.90E-03 5.06E-03 5.13E-03 0.005


### Wednesday, February 23, 2011 Page 8 of 13

### Gerald Gentleman Station
6/17/2010

Process Run Data



### Wednesday, February 23, 2011 Page 9 of 13

### Gerald Gentleman Station
6/17/2010 Process Run Data

APCD Run Data

Process Lab Run Data 

### Run Name Value UOM Comments Target Value 1 Coal Flow 0.361 1000 Tons/hr 0


### 1 Gross Megawatt 637 MW 0
2 Coal Flow 0.356 1000 Tons/hr 0
2 Gross Megawatt 637 MW 0 

### 3 Coal Flow 0.3521000 Tons/hr 0 3 Gross Megawatt 635 MW 0



### Run Name Value UOM Comments Target Value 1 BAGHOUSE 0 0



### Wednesday, February 23, 2011 Page 10 of 13

### Gerald Gentleman Station
6/17/2010 Sampling / Stack Data Results Detail


### Location Unit 1 - Method 29 Average Run Number 1 2 3 Test Date 3/20/2010 3/20/2010 3/21/2010 Run Start Time 7:50:00 AM3:15:00 PM 7:45:00 AM Run Finish Time 12:23:00 PM7:30:00 PM 1:25:00 PM Net Traversing Points 48 48 48 Net Run Time, minutes 240 240 240 Nozzle Diameter, inches 0.192 0.192 0.192 0.192 Pitot Tube Coefficient 0.84 0.84 0.84 0.840 Dry Gas Meter Calibration Factor 0.997 0.997 0.997 0.997 Barometric Pressure, inches of Mercury 26.39 26.39 29.16 27.313 Average Orifice Meter Differential, inches H2O 0.72 0.74 0.72 0.727 Dry Gas Meter Volume Sampled, cubic feet 124.766 127.103 125.839 125.903 Average Dry Gas Meter Temperature, °F 69.70 78.39 73.31 73.800 Dry Gas Meter Volume Sampled, dscf 109.583 109.840 121.277 113.567 Total Moisture Liquid collected, g 283.1 281.5 282.6 282.400 Volume of Water Vapor, standard cubic feet 13.33 13.25 13.30 13.293 Moisture Content of Stack Gas, % 10.85 10.76 9.88 10.497 Moisture Saturation at Stack Gas Temperature, % 100.00 100.00 100.00 100.000 Dry Mole Fraction 0.8915 0.8924 0.9012 0.895 Carbon Dioxide, % 13.8 13.9 13.7 13.800 Oxygen, % 5.7 5.7 5.8 5.733 Carbon Monoxide & Nitrogen, % 80.5 80.4 80.5 80.467 Fuel Factor 1.10 1.09 1.10 Dry Molecular Weight, lb/lb-Mole 30.44 30.45 30.42 30.437 Wet Molecular weight, lb/lb-Mole 29.09 29.11 29.19 29.130 Flue Gas Static Pressure, inches of H2O -0.6 -0.6 -0.08 -0.427 Absolute Flue Gas Pressure, inches of Mercury 26.35 26.35 29.15 27.283 Average Stack Gas Temperature, °F 299.52 292.29 293.00 294.937 Average Velocity Head, inches of H2O 0.9087789313 184280.903089433

5247740.906830129

88155 0.906
Average Stack Gas Velocity, feet/second 68.14 67.58 64.33 66.683 Stack Cross-Sectional Area, square feet 621.041 621.041 621.041 621.041 Dry Volumetric Flow Rate, dry scfm 1,385,826.1 1,389,047.0 1,475,781.91,416,885.0 00 Actual Wet Volumetric Flue Gas Flow Rate, acfm 2,539,064.02,518,197.0 2,397,094.12,484,785.0 33 Percent Isokinetic of Sampling Rate, % 101.8 101.8 105.8 103.133 Percent Excess Air, % 36.7 36.7 37.5 36.967 F-Factor, dscfm/MMBtu @ %O2 9794 9794 9685 9,757.667 Round Duct Diameter, inches 337.44 337.44 337.44 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



### Wednesday, February 23, 2011 Page 11 of 13

### Gerald Gentleman Station
6/17/2010
Location Unit 1 - Method 5 Average Run Number 1 2 3 Test Date 3/20/2010 3/20/2010 3/21/2010 Run Start Time 7:50:00 AM3:15:00 PM 7:45:00 AM Run Finish Time 12:23:00 PM7:30:00 PM 1:25:00 PM Net Traversing Points 48 48 48 Net Run Time, minutes 240 240 240 Nozzle Diameter, inches 0.192 0.192 0.192 0.192 Pitot Tube Coefficient 0.84 0.84 0.84 0.840 Dry Gas Meter Calibration Factor 0.997 0.997 0.997 0.997 Barometric Pressure, inches of Mercury 26.39 26.39 29.16 27.313 Average Orifice Meter Differential, inches H2O 0.72 0.74 0.72 0.727 Dry Gas Meter Volume Sampled, cubic feet 124.766 127.103 125.839 125.903 Average Dry Gas Meter Temperature, °F 69.70 78.39 73.31 73.800 Dry Gas Meter Volume Sampled, dscf 109.583 109.840 121.277 113.567 Total Moisture Liquid collected, g 283.1 281.5 282.6 282.400 Volume of Water Vapor, standard cubic feet 13.33 13.25 13.30 13.293 Moisture Content of Stack Gas, % 10.85 10.76 9.88 10.497 Moisture Saturation at Stack Gas Temperature, % 100.00 100.00 100.00 100.000 Dry Mole Fraction 0.8915 0.8924 0.9012 0.895 Carbon Dioxide, % 13.8 13.9 13.7 13.800 Oxygen, % 5.7 5.7 5.8 5.733 Carbon Monoxide & Nitrogen, % 80.5 80.4 80.5 80.467 Fuel Factor 1.10 1.09 1.10 Dry Molecular Weight, lb/lb-Mole 30.44 30.45 30.42 30.437 Wet Molecular weight, lb/lb-Mole 29.09 29.11 29.19 29.130 Flue Gas Static Pressure, inches of H2O -0.6 -0.6 -0.08 -0.427 Absolute Flue Gas Pressure, inches of Mercury 26.35 26.35 29.15 27.283 Average Stack Gas Temperature, °F 299.52 292.29 293.00 294.937 Average Velocity Head, inches of H2O 0.9087789313 184280.903089433

5247740.906830129

881551 0.906
Average Stack Gas Velocity, feet/second 68.14 67.58 64.33 66.683 Stack Cross-Sectional Area, square feet 621.041 621.041 621.041 621.041 Dry Volumetric Flow Rate, dry scfm 1,385,826.1 1,389,047.0 1,475,781.91,416,885.0 00 Actual Wet Volumetric Flue Gas Flow Rate, acfm 2,539,064.02,518,197.0 2,397,094.12,484,785.0 33 Percent Isokinetic of Sampling Rate, % 101.8 101.8 105.8 103.133 Percent Excess Air, % 36.7 36.7 37.5 36.967 F-Factor, dscfm/MMBtu @ %O2 9794 9794 9685 9,757.667 Round Duct Diameter, inches 337.44 337.44 337.44 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



### Wednesday, February 23, 2011 Page 12 of 13

### Gerald Gentleman Station
6/17/2010
Location Unit 1 - OTM - 27/28 Average Run Number 1 2 3 Test Date 3/20/2010 3/20/2010 3/21/2010 Run Start Time 7:00:00 AM2:20:00 PM 7:05:00 AM Run Finish Time 1:28:00 PM 8:46:45 PM 1:39:00 PM Net Traversing Points 24 24 23 Net Run Time, minutes 346.25 355.75 362.25 Nozzle Diameter, inches 0.155 0.155 0.157 0.156 Pitot Tube Coefficient 0.84 0.84 0.84 0.840 Dry Gas Meter Calibration Factor 1.008 1.008 1.008 1.008 Barometric Pressure, inches of Mercury 26.39 26.39 26.16 26.313 Average Orifice Meter Differential, inches H2O 0.30 0.30 0.30 0.300 Dry Gas Meter Volume Sampled, cubic feet 124.930 131.240 131.530 129.233 Average Dry Gas Meter Temperature, °F 66.23 73.67 71.31 70.403 Dry Gas Meter Volume Sampled, dscf 111.539 115.539 115.296 114.125 Total Moisture Liquid collected, g 265 281.6 345.7 297.433 Volume of Water Vapor, standard cubic feet 12.47 13.25 16.27 13.997 Moisture Content of Stack Gas, % 10.06 10.29 12.37 10.907 Moisture Saturation at Stack Gas Temperature, % 100.00 100.00 100.00 100.000 Dry Mole Fraction 0.8994 0.8971 0.8763 0.891 Carbon Dioxide, % 13.8 13.9 13.7 13.800 Oxygen, % 5.7 5.7 5.8 5.733 Carbon Monoxide & Nitrogen, % 80.5 80.4 80.5 80.467 Fuel Factor 1.10 1.09 1.10 Dry Molecular Weight, lb/lb-Mole 30.44 30.45 30.42 30.437 Wet Molecular weight, lb/lb-Mole 29.19 29.17 28.88 29.080 Flue Gas Static Pressure, inches of H2O -0.6 -0.6 -0.8 -0.667 Absolute Flue Gas Pressure, inches of Mercury 26.35 26.35 26.10 26.267 Average Stack Gas Temperature, °F 296.13 290.92 290.46 292.503 Average Velocity Head, inches of H2O 0.9538211056 295440.943302305

4013420.952131801

352262 0.950
Average Stack Gas Velocity, feet/second 69.54 68.94 69.92 69.467 Stack Cross-Sectional Area, square feet 621.041 621.041 621.041 621.041 Dry Volumetric Flow Rate, dry scfm 1,433,229.0 1,427,062.3 1,401,235.21,420,508.8 33 Actual Wet Volumetric Flue Gas Flow Rate, acfm 2,591,231.5 2,568,874.0 2,605,391.22,588,498.9 00 Percent Isokinetic of Sampling Rate, % 106.5 107.9 104.9 106.433 Percent Excess Air, % 36.7 36.7 37.5 36.967 F-Factor, dscfm/MMBtu @ %O2 9794 9794 9685 9,757.667 Round Duct Diameter, inches 337.44 337.44 337.44 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



### Wednesday, February 23, 2011 Page 13 of 13