Name: Pamela K. Graika

Title: Designated Representative (Gen. Mgr.,

Company: Northern States Power Company

Sign Date: 9/1/2010

Name: Scott W. Banach

Title: Director, Project Engineering

Company: Platt environmental Services, Inc.

Sign Date: 8/27/2010

Permitted Facility Representative / Date Testing Company Representative / Date

Sherburne County Unit 3 MACT ICR

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.

Monday, February 21, 2011 Page 1 of 14
Sherburne County Unit 3 MACT ICR

9/1/2010

Facility Information:

Sherburne County

13999 Industrial Boulevard

Becker MN 55308

Contact: Arthur Zimmerman

Phone: 612-330-7823

Fax:

Email: arthur.t.zimmerman@xcelenergy.co

m

Testing Company:

Platt Environmental Services, Inc.

1520 Kensington Road

Suite 204

Oak Brook IL 60523

Contact: Scott Banach

Phone: 630-521-9400

Fax: 630-521-9494

Email: SBanach@plattenv.com

Air Permit Number:

14100004-002

Permitted Source ID/Name:

3 NSP - Sherburne County (EU003)

Permitted Maximum Process Rate:

NA

Max. Normal Operation Process Rate:

880-960 MW

Target Process Test Rate

880-960 MW

Description of the source (including control equipment). Please see the attachments for source or

 process flow diagram:

Source is a wall-fired dry bottom pulverized coal boiler with separated close-coupled over-fire air and Low NOx 

burners for NOx control, a spray dryer absorber for SO2 control, activated carbon for mercury control, and a 

baghouse for particulate control.

Industry/SCC/NAIS 221112

Sampling Location Information:

Test Parameter Information:

AFS #: 2714100004 FRS #: 110000424700

SCC / Description 10100222 External Combustion Boilers - Electric Generation - Bituminous/Subbituminous 

Coal - Pulverized Coal: Dry 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

Stack 354 0 0 0 11.5 8.5 4 0

Target

Parameter 

Test

Method

Number of

Test Runs

Test Run

Duration

Sample 

Location Points Comments

Stack Flowrate Method 1 - 4 3 60 0 12 Sample Points

Stack % H2O Method 1 - 4 3 60 0 12 Sample Points

Stack Carbon Monoxide Method 10 3 60 0 1 Sample Point

Stack Formaldehyde Method 0011 0

Total organic compounds 

(TOC) as Propane

Stack Method 25A 3 120 0 3 Sample Points

Stack Co2 Method 3A CO2 3 60 0 3 Sample Points

Stack O2 Method 3A O2 3 60 0 3 Sample Points

Monday, February 21, 2011 Page 2 of 14
Sherburne County Unit 3 MACT ICR

9/1/2010

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.

Monday, February 21, 2011 Page 3 of 14
Sherburne County Unit 3 MACT ICR

9/1/2010

Sampling / Stack Data Results Summary

Location Stack - Method 0011

Average

Run Number M0011-1 M0011-2 M0011-3

Test Date 4/6/2010 4/7/2010 4/7/2010

Run Start Time 1:00:00 PM 8:05:00 

AM

11:10:00 AM

Run Finish Time 4:00:00 PM 10:30:00 

AM

1:35:00 PM

Net Run Time, minutes 135 135 140

Dry Gas Meter Volume Sampled, dscf 71.321 66.531 72.458 70.103

Moisture Content of Stack Gas, % 14.24 14.27 13.99 14.167

Moisture Saturation at Stack Gas Temperature, % 45.64 44.01 43.97 44.540

Carbon Dioxide, % 12.8 13.1 13.1 13.000

Oxygen, % 6.9 6.2 6.2 6.433

Average Stack Gas Temperature, °F 173.08 171.79 171.75 172.207

Dry Volumetric Flow Rate, dry scfm 2,153,716.0 2,112,151.9 2,275,929.8 2,180,599.23

3

Actual Wet Volumetric Flue Gas Flow Rate, acfm 3,147,895.4 3,060,545.0 3,286,917.8 3,165,119.40

0

Percent Isokinetic of Sampling Rate, % 95.9 91.3 88.9 92.033

F-Factor, dscfm/MMBtu @ %O2 9902 9971 9964 9,945.667

Fw 0 0 0 0.000

Fc 0 0 0 0.000

Location Stack - Method 10

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

Monday, February 21, 2011 Page 4 of 14
Sherburne County Unit 3 MACT ICR

9/1/2010

Location Stack - Method 25A

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 - Method 3A CO2

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

Monday, February 21, 2011 Page 5 of 14
Sherburne County Unit 3 MACT ICR

9/1/2010

Location Stack - 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

Monday, February 21, 2011 Page 6 of 14
Sherburne County Unit 3 MACT ICR

9/1/2010

Emissions Summary

Process Run Data

Location: Stack - Method 0011

Compound: Formaldehyde

Average

RunNumber M0011-1 M0011-2 M0011-3

Mass_mg 0.021 0.021 0.026 0.023

lb/mmBtuO2 9.60E-06 9.87E-06 1.12E-05 0.000

ppm 8.33E-03 8.93E-03 1.01E-02 0.009

Location: Stack - Method 10

Compound: Carbon Monoxide

Average

Run 1 2 3

lb/mmBtuO2 1.58E-01 9.14E-02 5.58E-02 0.102

ppm 1.47E+02 8.87E+01 5.42E+01 96.633

Location: Stack - Method 25A

Compound: Total organic compounds (TOC) as 

Average

Run 1 2 3

lb/mmBtuO2 1.74E-03 3.79E-04 2.83E-04 0.001

ppm 1.03E+00 2.33E-01 1.74E-01 0.479

Monday, February 21, 2011 Page 7 of 14
Sherburne County Unit 3 MACT ICR

9/1/2010

Process Run Data

Run Name Value UOM Comments

Target

Value

1 Subbituminous Coal Burned 509.3 Tons/hr Run 1 - Method 

0010, 0011, 0031, 

3A, 4, 6C, 18, 25A

0

1 Gross load 918.7 MW Run 1 - Method 

0010, 0011, 0031, 

3A, 4, 6C, 18, 25A

880

1 Spray dryer absorber pressure drop 0.33 " wc Run 1 - Method 

0010, 0011, 0031, 

3A, 4, 6C, 18, 25A

2.5

1 Spray dryer absorber slurry flow 127.1 gpm/module Run 1 - Method 

0010, 0011, 0031, 

3A, 4, 6C, 18, 25A

25

1 Baghouse pressure drop 0 " w.c. Run 1 - Method 

0010, 0011, 0031, 

3A, 4, 6C, 18, 25A

0

2 Subbituminous Coal Burned 499.9 Tons/hr Run 2 - Method 

0010, 0011, 0031, 

3A, 4, 6C, 18, 25A

0

2 Gross load 906 MW Run 2 - Method 

0010, 0011, 0031, 

3A, 4, 6C, 18, 25A

880

2 Spray dryer absorber pressure drop 0.31 " wc Run 2 - Method 

0010, 0011, 0031, 

3A, 4, 6C, 18, 25A

2.5

2 Spray dryer absorber slurry flow 120.3 gpm/module Run 2 - Method 

0010, 0011, 0031, 

3A, 4, 6C, 18, 25A

25

2 Baghouse pressure drop 0 " w.c. Run 2 - Method 

0010, 0011, 0031, 

3A, 4, 6C, 18, 25A

0

3 Subbituminous Coal Burned 495.8 Tons/hr Run 3 - Method 

0010, 0011, 0031, 

3A, 4, 6C, 18, 25A

0

3 Gross load 905.3 MW Run 3 - Method 

0010, 0011, 0031, 

3A, 4, 6C, 18, 25A

880

3 Spray dryer absorber pressure drop 0.31 " wc Run 3 - Method 

0010, 0011, 0031, 

3A, 4, 6C, 18, 25A

2.5

3 Spray dryer absorber slurry flow 123.3 gpm/module Run 3 - Method 

0010, 0011, 0031, 

3A, 4, 6C, 18, 25A

25

3 Baghouse pressure drop 0 " w.c. Run 3 - Method 

0010, 0011, 0031, 

3A, 4, 6C, 18, 25A

0

Monday, February 21, 2011 Page 8 of 14
Sherburne County Unit 3 MACT ICR

9/1/2010

APCD Run Data

Process Lab Run Data

Run Name Value UOM Comments

Target

Value

1 OVERFIRE AIR 0

2 OVERFIRE AIR 0

3 OVERFIRE AIR 0

1 LOW NOX BURNERS 0

2 LOW NOX BURNERS 0

3 LOW NOX BURNERS 0

1 SPRAY DRYER 127.1 gpm/module 25

2 SPRAY DRYER 120.3 gpm/module 25

3 SPRAY DRYER 123.3 gpm/module 25

1 SPRAY DRYER 0.33 " w.c. 2.5

2 SPRAY DRYER 0.31 " w.c. 2.5

3 SPRAY DRYER 0.31 " w.c. 2.5

1 ACTIVATED CARBON ADSORPTION 148.1 lb/hr

2 ACTIVATED CARBON ADSORPTION 108.2 lb/hr

3 ACTIVATED CARBON ADSORPTION 108.2 lb/hr

1 BAGHOUSE 7.1 " w.c. 0

2 BAGHOUSE 6.7 " w.c. 0

3 BAGHOUSE 6.7 " w.c. 0

Run Name Value UOM Comments

1 Higher heating value 11841 Btu/lb

1 Moisture 26.41 %

2 Higher heating value 11502 Btu/lb

2 Moisture 23.32 %

3 Higher heating value 11530 Btu/lb

3 Moisture 23.4 %

Monday, February 21, 2011 Page 9 of 14
Sherburne County Unit 3 MACT ICR

9/1/2010

Sampling / Stack Data Results Detail

Location Stack - Method 0011

Average

Run Number M0011-1 M0011-2 M0011-3

Test Date 4/6/2010 4/7/2010 4/7/2010

Run Start Time 1:00:00 PM 8:05:00 AM 11:10:00 AM

Run Finish Time 4:00:00 PM 10:30:00 AM 1:35:00 PM

Net Traversing Points 25 25 25

Net Run Time, minutes 135 135 140

Nozzle Diameter, inches 0.179 0.179 0.179 0.179

Pitot Tube Coefficient 0.84 0.84 0.84 0.840

Dry Gas Meter Calibration Factor 0.999 0.999 0.999 0.999

Barometric Pressure, inches of Mercury 28.65 28.85 28.85 28.783

Average Orifice Meter Differential, inches H2O 1.12 0.85 0.98 0.983

Dry Gas Meter Volume Sampled, cubic feet 75.992 69.425 74.675 73.364

Average Dry Gas Meter Temperature, °F 79.71 71.88 65.48 72.357

Dry Gas Meter Volume Sampled, dscf 71.321 66.531 72.458 70.103

Total Moisture Liquid collected, g 251.6 235.1 250.5 245.733

Volume of Water Vapor, standard cubic feet 11.84 11.07 11.79 11.567

Moisture Content of Stack Gas, % 14.24 14.27 13.99 14.167

Moisture Saturation at Stack Gas Temperature, % 45.64 44.01 43.97 44.540

Dry Mole Fraction 0.8576 0.8573 0.8601 0.858

Carbon Dioxide, % 12.8 13.1 13.1 13.000

Oxygen, % 6.9 6.2 6.2 6.433

Carbon Monoxide & Nitrogen, % 80.3 80.7 80.7 80.567

Fuel Factor 1.09 1.12 1.12

Dry Molecular Weight, lb/lb-Mole 30.32 30.34 30.34 30.333

Wet Molecular weight, lb/lb-Mole 28.57 28.58 28.61 28.587

Flue Gas Static Pressure, inches of H2O -0.4 -0.4 -0.4 -0.400

Absolute Flue Gas Pressure, inches of Mercury 28.62 28.82 28.82 28.753

Average Stack Gas Temperature, °F 173.08 171.79 171.75 172.207

Average Velocity Head, inches of H2O 1.4757839351

7869

1.408003700

44719

1.625927593

17001

1.503

Average Stack Gas Velocity, feet/second 76.76 74.63 80.15 77.180

Stack Cross-Sectional Area, square feet 683.493 683.493 683.493 683.493

Dry Volumetric Flow Rate, dry scfm 2,153,716.0 2,112,151.9 2,275,929.8 2,180,599.2

33

Actual Wet Volumetric Flue Gas Flow Rate, acfm 3,147,895.4 3,060,545.0 3,286,917.8 3,165,119.4

00

Percent Isokinetic of Sampling Rate, % 95.9 91.3 88.9 92.033

Percent Excess Air, % 48.3 41.0 41.0 43.433

F-Factor, dscfm/MMBtu @ %O2 9902 9971 9964 9,945.667

Round Duct Diameter, inches 354 354 354

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

Monday, February 21, 2011 Page 10 of 14
Sherburne County Unit 3 MACT ICR

9/1/2010

Location Stack - Method 10

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

Monday, February 21, 2011 Page 11 of 14
Sherburne County Unit 3 MACT ICR

9/1/2010

Location Stack - Method 25A

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

Monday, February 21, 2011 Page 12 of 14
Sherburne County Unit 3 MACT ICR

9/1/2010

Location Stack - Method 3A CO2

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

Monday, February 21, 2011 Page 13 of 14
Sherburne County Unit 3 MACT ICR

9/1/2010

Location Stack - 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

Monday, February 21, 2011 Page 14 of 14