Name: Mr. Patrick L. Pope

Title: Vice President & Chief Operating Offi

Company: Nebraska Public Power District

Sign Date: 7/6/2010

Name: Mr. Jeremy Miller

Title: Lead Field Engineer

Company: GE International, Inc.

Sign Date: 7/6/2010

Permitted Facility Representative / Date Testing Company Representative / Date

Nebraska Public Power District

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 12
Nebraska Public Power District

7/6/2010

Facility Information:

Nebraska Public Power District Sheldon Sta

4500 West Pella Road

Hallam NE 68368

Contact: Mr. Dave Darnell

Phone: 402-563-5817

Fax:

Email: dadarne@nppd.com

Testing Company:

GE International, Inc.

888 Industrial Drive

Elmhurst IL 60126

Contact:Mr. Jeffrey Daniels

Phone: 630-530-6655

Fax: 630-530-6630

Email: jeffery.daniels@ge.com

Air Permit Number: Permitted Source ID/Name:

3110900005 NPPD Sheldon Station

Permitted Maximum Process Rate:

1514 MMBtu/hr

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:

Control Device: The control device is a pulse-jet baghouse.

Flue Gas Flow Path: After exiting the boiler economizer, flue gas travels through a de-energized/non-functional 

precipitator before traveling through the air heater. After the air heater, the flue gas goes through the baghouse before 

exiting the stack

Industry/SCC/NAIS 221112

Sampling Location Information:

Test Parameter Information:

AFS #: 3110900005 FRS #: 110000447785

SCC / Description

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 2 Stack A 139.38 0 0 0 696.9 376.33 4 6

Target

Parameter 

Test

Method

Number of

Test Runs

Test Run

Duration

Sample 

Location Points Comments

Inorganic (Aqueous) 

Condensible Part.

Unit 2 Stack A OTM - 27/28 3 362 0

Unit 2 Stack A Total Particulate OTM - 27/28 3 362 0

Organic Condensible 

Particulate

Unit 2 Stack A OTM - 27/28 3 362 0

Unit 2 Stack A Filterable Particulate OTM - 27/28 3 362 0

Unit 2 Stack A Total PM2.5 OTM - 27/28 3 362 0

Wednesday, February 23, 2011 Page 2 of 12
Nebraska Public Power District

7/6/2010

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.

Unit 2 Stack A Filterable PM2.5 OTM - 27/28 3 362 0

Unit 2 Stack A Chromium Method 29 3 240 0

Unit 2 Stack A Antimony Method 29 3 240 0

Unit 2 Stack A Arsenic Method 29 3 240 0

Unit 2 Stack A Selenium Method 29 3 240 0

Unit 2 Stack A Nickel Method 29 3 240 0

Mercury Method 29 3 240 0 During the Sheldon 

Unit 2 test runs, the 

boiler experienced 

degrading 

performance due to 

pluggage. This 

condition lowers the 

quality of combustion, 

thus raising the 

percentage of carbon 

carryover in the flyash 

due to loss-of-ignition. 

This condition may 

have affected the 

actual mercury 

emissions since 

carbon is known to 

capture some mercury 

in flue gas.

Unit 2 Stack A

Unit 2 Stack A Manganese Method 29 3 240 0

Unit 2 Stack A Cobalt Method 29 3 240 0

Unit 2 Stack A Beryllium Method 29 3 240 0

Unit 2 Stack A Cadmium Method 29 3 240 0

Unit 2 Stack A Lead Method 29 3 240 0

Unit 2 Stack A O2 Method 3A O2 3 400 0

Unit 2 Stack A Co2 Method 3A CO2 3 400 0

Unit 2 Stack A O2 Method 3A O2 3 400 0

Unit 2 Stack A Co2 Method 3A CO2 3 400 0

Unit 2 Stack A Filterable Particulate Method 5 3 240 0

Wednesday, February 23, 2011 Page 3 of 12
Nebraska Public Power District

7/6/2010

Sampling / Stack Data Results Summary

Location Unit 2 Stack A - Method 29

Average

Run Number 1 2 3

Test Date 5/11/2010 5/11/2010 5/12/2010

Run Start Time 6:38:00 AM 12:36:00 

PM

6:57:00 AM

Run Finish Time 10:47:00 AM 4:46:00 PM 11:12:00 AM

Net Run Time, minutes 240 240 240

Dry Gas Meter Volume Sampled, dscf 141.454 137.410 137.985 138.950

Moisture Content of Stack Gas, % 9.88 9.76 9.20 9.613

Moisture Saturation at Stack Gas Temperature, % 100.00 100.00 100.00 100.000

Carbon Dioxide, % 12.2 12.1 11.8 12.033

Oxygen, % 8 8 8.1 8.033

Average Stack Gas Temperature, °F 284.73 287.58 277.75 283.353

Dry Volumetric Flow Rate, dry scfm 294,328.3 286,993.8 290,472.8 290,598.300

Actual Wet Volumetric Flue Gas Flow Rate, acfm 490,665.7 478,268.7 476,107.2 481,680.533

Percent Isokinetic of Sampling Rate, % 101.3 100.9 100.1 100.767

F-Factor, dscfm/MMBtu @ %O2 8168 8168 9104 8,480.000

Fw 0 0 0 0.000

Fc 1674 1674 1828 1,725.333

Wednesday, February 23, 2011 Page 4 of 12
Nebraska Public Power District

7/6/2010

Location Unit 2 Stack A - Method 5

Average

Run Number

Test Date

Run Start Time

Run Finish Time

Net Run Time, minutes

Dry Gas Meter Volume Sampled, dscf

Moisture Content of Stack Gas, %

Moisture Saturation at Stack Gas Temperature, %

Carbon Dioxide, %

Oxygen, %

Average Stack Gas Temperature, °F

Dry Volumetric Flow Rate, dry scfm

Actual Wet Volumetric Flue Gas Flow Rate, acfm

Percent Isokinetic of Sampling Rate, %

F-Factor, dscfm/MMBtu @ %O2

Fw

Fc

Location Unit 2 Stack A - OTM - 27/28

Average

Run Number

Test Date

Run Start Time

Run Finish Time

Net Run Time, minutes

Dry Gas Meter Volume Sampled, dscf

Moisture Content of Stack Gas, %

Moisture Saturation at Stack Gas Temperature, %

Carbon Dioxide, %

Oxygen, %

Average Stack Gas Temperature, °F

Dry Volumetric Flow Rate, dry scfm

Actual Wet Volumetric Flue Gas Flow Rate, acfm

Percent Isokinetic of Sampling Rate, %

F-Factor, dscfm/MMBtu @ %O2

Fw

Fc

Wednesday, February 23, 2011 Page 5 of 12
Nebraska Public Power District

7/6/2010

Emissions Summary

Location: Unit 2 Stack A - Method 29

Compound: Antimony

Average

RunNumber 1 2 3

Mass_mg 0.0028 0.0028 0.0028 0.003

lb/mmBtuO2 5.77E-07 5.94E-07 6.65E-07 0.000

Compound: Arsenic

Average

RunNumber 1 2 3

Mass_mg 0.0028 0.0028 0.0028 0.003

lb/mmBtuO2 5.77E-07 5.94E-07 6.65E-07 0.000

Compound: Beryllium

Average

RunNumber 1 2 3

Mass_mg 0.0007 0.0007 0.0007 0.001

lb/mmBtuO2 1.44E-07 1.49E-07 1.66E-07 0.000

Compound: Cadmium

Average

RunNumber 1 2 3

Mass_mg 0.00085 0.0007 0.0007 0.001

lb/mmBtuO2 1.75E-07 1.49E-07 1.66E-07 0.000

Compound: Chromium

Average

RunNumber 1 2 3

Mass_mg 0.00361 0.00216 0.0021 0.003

lb/mmBtuO2 7.45E-07 4.59E-07 4.99E-07 0.000

Compound: Cobalt

Average

RunNumber 1 2 3

Mass_mg 0.0007 0.0007 0.0007 0.001

lb/mmBtuO2 1.44E-07 1.49E-07 1.66E-07 0.000

Compound: Lead

Average

RunNumber 1 2 3

Mass_mg 0.00162 0.0014 0.0014 0.001

lb/mmBtuO2 3.34E-07 2.97E-07 3.33E-07 0.000

Compound: Manganese

Average

RunNumber 1 2 3

Mass_mg 0.00405 0.004 0.004 0.004

lb/mmBtuO2 8.35E-07 8.49E-07 9.50E-07 0.000

Compound: Mercury

Average

Wednesday, February 23, 2011 Page 6 of 12
Nebraska Public Power District

7/6/2010

RunNumber 1 2 3

Mass_mg 0.002138 0.001535 0.000949 0.002

lb/mmBtuO2 4.41E-07 3.26E-07 2.25E-07 0.000

Compound: Nickel

Average

RunNumber 1 2 3

Mass_mg 0.00574 0.00465 0.0035 0.005

lb/mmBtuO2 1.18E-06 9.87E-07 8.31E-07 0.000

Compound: Selenium

Average

RunNumber 1 2 3

Mass_mg 0.0154 0.0088 0.007 0.010

lb/mmBtuO2 3.18E-06 1.87E-06 1.66E-06 0.000

Location: Unit 2 Stack A - Method 5

Compound: Filterable Particulate

Average

RunNumber 1 2 3

Mass_mg 4.6 2.7 2.4 3.233

lb/mmBtuO2 9.49E-04 5.73E-04 5.70E-04 0.001

Location: Unit 2 Stack A - OTM - 27/28

Compound: Filterable Particulate

Average

RunNumber 1 2 3

Mass_mg 1.5 1.5 1.3 1.433

lb/mmBtuO2 3.41E-04 3.30E-04 3.29E-04 0.000

Compound: Filterable PM2.5

Average

RunNumber 1 2 3

Mass_mg 1 1 0.8 0.933

lb/mmBtuO2 2.27E-04 2.20E-04 2.03E-04 0.000

Compound: Inorganic (Aqueous) Condensible Pa

Average

RunNumber 1 2 3

Mass_mg 11.58 17.98 37.78 22.447

lb/mmBtuO2 2.63E-03 3.96E-03 9.57E-03 0.005

Compound: Organic Condensible Particulate

Average

RunNumber 1 2 3

Mass_mg 3.52 2.12 2.72 2.787

lb/mmBtuO2 7.99E-04 4.67E-04 6.89E-04 0.001

Compound: Total Particulate

Average

RunNumber 1 2 3

Mass_mg 16.6 21.6 41.8 26.667

lb/mmBtuO2 3.77E-03 4.75E-03 1.06E-02 0.006

Wednesday, February 23, 2011 Page 7 of 12
Nebraska Public Power District

7/6/2010

Process Run Data

Compound: Total PM2.5

Average

RunNumber 1 2 3

Mass_mg 16.1 21.1 41.3 26.167

lb/mmBtuO2 3.65E-03 4.64E-03 1.05E-02 0.006

Wednesday, February 23, 2011 Page 8 of 12
Nebraska Public Power District

7/6/2010

Process Run Data

APCD Run Data

Process Lab Run Data

Run Name Value UOM Comments

Target

Value

1 Total Steam Flow 728 KPPH 0

2 Total Steam Flow 722 KPPH 0

3 Total Steam Flow 703 KPPH 0

1 Total Coal Flow 0.128 KPPH 0

2 Total Coal Flow 0.127 KPPH 0

3 Total Coal Flow 0.12 KPPH 0

1 Gross Megawatts 104 MW 0

2 Gross Megawatts 103 MW 0

3 Gross Megawatts 100 MW 0

Run Name Value UOM Comments

Target

Value

1 BAGHOUSE 0 0

Wednesday, February 23, 2011 Page 9 of 12
Nebraska Public Power District

7/6/2010

Sampling / Stack Data Results Detail

Location Unit 2 Stack A - Method 29

Average

Run Number 1 2 3

Test Date 5/11/2010 5/11/2010 5/12/2010

Run Start Time 6:38:00 AM 12:36:00 PM 6:57:00 AM

Run Finish Time 10:47:00 AM 4:46:00 PM 11:12:00 AM

Net Traversing Points 48 48 48

Net Run Time, minutes 240 240 240

Nozzle Diameter, inches 0.196 0.196 0.196 0.196

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 28.13 28.21 28.13 28.157

Average Orifice Meter Differential, inches H2O 1.28 1.22 1.22 1.240

Dry Gas Meter Volume Sampled, cubic feet 149.955 149.153 145.839 148.316

Average Dry Gas Meter Temperature, °F 63.78 77.75 62.13 67.887

Dry Gas Meter Volume Sampled, dscf 141.454 137.410 137.985 138.950

Total Moisture Liquid collected, g 329.2 315.8 296.9 313.967

Volume of Water Vapor, standard cubic feet 15.50 14.86 13.98 14.780

Moisture Content of Stack Gas, % 9.88 9.76 9.20 9.613

Moisture Saturation at Stack Gas Temperature, % 100.00 100.00 100.00 100.000

Dry Mole Fraction 0.9012 0.9024 0.908 0.904

Carbon Dioxide, % 12.2 12.1 11.8 12.033

Oxygen, % 8 8 8.1 8.033

Carbon Monoxide & Nitrogen, % 79.8 79.9 80.1 79.933

Fuel Factor 1.06 1.07 1.08

Dry Molecular Weight, lb/lb-Mole 30.27 30.26 30.21 30.247

Wet Molecular weight, lb/lb-Mole 29.06 29.06 29.09 29.070

Flue Gas Static Pressure, inches of H2O -0.5 -0.5 -0.5 -0.500

Absolute Flue Gas Pressure, inches of Mercury 28.09 28.17 28.09 28.117

Average Stack Gas Temperature, °F 284.73 287.58 277.75 283.353

Average Velocity Head, inches of H2O 1.2661962149

0634

1.201713109

18971

1.204533910

22461

1.224

Average Stack Gas Velocity, feet/second 77.18 75.23 74.89 75.767

Stack Cross-Sectional Area, square feet 105.957 105.957 105.957 105.957

Dry Volumetric Flow Rate, dry scfm 294,328.3 286,993.8 290,472.8 290,598.300

Actual Wet Volumetric Flue Gas Flow Rate, acfm 490,665.7 478,268.7 476,107.2 481,680.533

Percent Isokinetic of Sampling Rate, % 101.3 100.9 100.1 100.767

Percent Excess Air, % 61.2 61.1 62.1 61.467

F-Factor, dscfm/MMBtu @ %O2 8168 8168 9104 8,480.000

Round Duct Diameter, inches 139.38 139.38 139.38

Rectangular Duct Width, inches 0 0 0

Rectangular Duct Length, inches 0 0 0

Fw 0 0 0 0.000

Fc 1674 1674 1828 1,725.333

Wednesday, February 23, 2011 Page 10 of 12
Nebraska Public Power District

7/6/2010

Location Unit 2 Stack A - Method 5

Average

Run Number

Test Date

Run Start Time

Run Finish Time

Net Traversing Points

Net Run Time, minutes

Nozzle Diameter, inches

Pitot Tube Coefficient

Dry Gas Meter Calibration Factor

Barometric Pressure, inches of Mercury

Average Orifice Meter Differential, inches H2O

Dry Gas Meter Volume Sampled, cubic feet

Average Dry Gas Meter Temperature, °F

Dry Gas Meter Volume Sampled, dscf

Total Moisture Liquid collected, g

Volume of Water Vapor, standard cubic feet

Moisture Content of Stack Gas, %

Moisture Saturation at Stack Gas Temperature, %

Dry Mole Fraction

Carbon Dioxide, %

Oxygen, %

Carbon Monoxide & Nitrogen, %

Fuel Factor

Dry Molecular Weight, lb/lb-Mole

Wet Molecular weight, lb/lb-Mole

Flue Gas Static Pressure, inches of H2O

Absolute Flue Gas Pressure, inches of Mercury

Average Stack Gas Temperature, °F

Average Velocity Head, inches of H2O

Average Stack Gas Velocity, feet/second

Stack Cross-Sectional Area, square feet

Dry Volumetric Flow Rate, dry scfm

Actual Wet Volumetric Flue Gas Flow Rate, acfm

Percent Isokinetic of Sampling Rate, %

Percent Excess Air, %

F-Factor, dscfm/MMBtu @ %O2

Round Duct Diameter, inches

Rectangular Duct Width, inches

Rectangular Duct Length, inches

Fw

Fc

Wednesday, February 23, 2011 Page 11 of 12
Nebraska Public Power District

7/6/2010

Location Unit 2 Stack A - OTM - 27/28

Average

Run Number

Test Date

Run Start Time

Run Finish Time

Net Traversing Points

Net Run Time, minutes

Nozzle Diameter, inches

Pitot Tube Coefficient

Dry Gas Meter Calibration Factor

Barometric Pressure, inches of Mercury

Average Orifice Meter Differential, inches H2O

Dry Gas Meter Volume Sampled, cubic feet

Average Dry Gas Meter Temperature, °F

Dry Gas Meter Volume Sampled, dscf

Total Moisture Liquid collected, g

Volume of Water Vapor, standard cubic feet

Moisture Content of Stack Gas, %

Moisture Saturation at Stack Gas Temperature, %

Dry Mole Fraction

Carbon Dioxide, %

Oxygen, %

Carbon Monoxide & Nitrogen, %

Fuel Factor

Dry Molecular Weight, lb/lb-Mole

Wet Molecular weight, lb/lb-Mole

Flue Gas Static Pressure, inches of H2O

Absolute Flue Gas Pressure, inches of Mercury

Average Stack Gas Temperature, °F

Average Velocity Head, inches of H2O

Average Stack Gas Velocity, feet/second

Stack Cross-Sectional Area, square feet

Dry Volumetric Flow Rate, dry scfm

Actual Wet Volumetric Flue Gas Flow Rate, acfm

Percent Isokinetic of Sampling Rate, %

Percent Excess Air, %

F-Factor, dscfm/MMBtu @ %O2

Round Duct Diameter, inches

Rectangular Duct Width, inches

Rectangular Duct Length, inches

Fw

Fc

Wednesday, February 23, 2011 Page 12 of 12