Name:

Title:

Company:

Sign Date:

Name:

Title:

Company:

Sign Date:

Permitted Facility Representative / Date Testing Company Representative / Date

Colstrip Energy LP

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.

Thursday, January 20, 2011 Page 1 of 11
Colstrip Energy LP

Facility Information:

Colstrip Energy LP

18 Snider Subdivsion Road

Colstrip MT 59323

Contact: Jim Geslin

Phone: (406) 748-4729

Fax:

Email:

Testing Company:

Bison Engineering

1400 11th Avenue

Helena MT 59601

Contact: Steve Fryberger

Phone: (406) 633-1523

Fax:

Email: sfryberger@bison-eng.com

Air Permit Number:

OP2035-2

Permitted Source ID/Name:

10784 Colstrip Energy Limited Partnership

Permitted Maximum Process Rate:

543 MMBtu/hr

Max. Normal Operation Process Rate:

635 MMBtu/hr

Target Process Test Rate

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 #: 030-087-0007A FRS #: 110017416946

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

BLR1 Stack 96 0 0 0 8 2 2 12

Target

Parameter 

Test

Method

Number of

Test Runs

Test Run

Duration

Sample 

Location Points Comments

BLR1 Stack % H2O Method 1 - 4 3 120 0

BLR1 Stack Flowrate Method 1 - 4 3 120 0

BLR1 Stack Carbon Monoxide Method 10 3 120 0

BLR1 Stack Formaldehyde Method 0011 3 120 0

Total organic compounds 

(TOC) as Propane

Method 25A 3 120 0 Non-methane TOC as 

propane

BLR1 Stack

BLR1 Stack Co2 Method 3A CO2 3 120 0

BLR1 Stack O2 Method 3A O2 3 120 0

Thursday, January 20, 2011 Page 2 of 11
Colstrip Energy LP

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.

N/A

BLR1 Stack Sulfur Dioxide Method 6C 3 120 0 Method 6

Thursday, January 20, 2011 Page 3 of 11
Colstrip Energy LP

Sampling / Stack Data Results Summary

Location BLR1 Stack - Method 0011

Average

Run Number 1 2 3

Test Date 5/4/2010 5/6/2010 5/6/2010

Run Start Time 8:30:00 AM 11:10:00 

AM

8:30:00 AM

Run Finish Time 10:20:00 AM 1:00:00 PM 10:20:00 AM

Net Run Time, minutes 120 120 120

Dry Gas Meter Volume Sampled, dscf 75.409 76.260 75.409 75.693

Moisture Content of Stack Gas, % 9.69 9.79 10.38 9.953

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

Carbon Dioxide, % 13.17 13.17 13.17 13.170

Oxygen, % 7.01 7.01 7.01 7.010

Average Stack Gas Temperature, °F 312.75 312.92 312.75 312.807

Dry Volumetric Flow Rate, dry scfm 121,174.1 122,147.8 120,430.7 121,250.867

Actual Wet Volumetric Flue Gas Flow Rate, acfm 218,743.2 220,794.0 219,075.0 219,537.400

Percent Isokinetic of Sampling Rate, % 100.6 100.9 101.2 100.900

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 BLR1 Stack - Method 10

Average

Run Number 1 2 3

Test Date 5/5/2010 5/5/2010 5/5/2010

Run Start Time 10:58:00 AM 2:03:00 PM 4:28:00 PM

Run Finish Time 12:58:00 PM 4:03:00 PM 6:28:00 PM

Carbon Dioxide, % 12.89 13.2 12.85 12.980

Oxygen, % 6.98 6.76 7.02 6.920

Dry Volumetric Flow Rate, dry scfm 132920 134540 134035 133,831.667

F-Factor, dscfm/MMBtu @ %O2 9780 9780 9780 9,780.000

Moisture, % 8.79 8.72 8.48 8.663

Fuel Type Override Override Override

Fw 10640 10640 10640 10,640.000

Fc 1800 1800 1800 1,800.000

Thursday, January 20, 2011 Page 4 of 11
Colstrip Energy LP

Location BLR1 Stack - Method 25A

Average

Run Number 1 2 3

Test Date 5/5/2010 5/5/2010 5/5/2010

Run Start Time 10:58:00 AM 2:03:00 PM 4:28:00 PM

Run Finish Time 12:58:00 PM 4:03:00 PM 6:28:00 PM

Carbon Dioxide, % 12.89 13.2 12.85 12.980

Oxygen, % 6.98 6.76 7.02 6.920

Dry Volumetric Flow Rate, dry scfm 132920 134540 134035 133,831.667

F-Factor, dscfm/MMBtu @ %O2 9780 9780 9780 9,780.000

Moisture, % 8.79 8.72 8.48 8.663

Fuel Type Override Override Override

Fw 10640 10640 10640 10,640.000

Fc 1800 1800 1800 1,800.000

Thursday, January 20, 2011 Page 5 of 11
Colstrip Energy LP

Emissions Summary

Process Run Data

Location: BLR1 Stack - Method 0011

Compound: Formaldehyde

Average

RunNumber 1 2 3

Mass_mg 0.12 0.037 0.04 0.066

lb/mmBtuO2 5.16E-05 1.57E-05 1.72E-05 0.000

ppm 4.50E-02 1.37E-02 1.50E-02 0.025

ppm@7%O2 4.50E-02 1.37E-02 1.50E-02 0.025

Location: BLR1 Stack - Method 10

Compound: Carbon Monoxide

Average

Run 1 2 3

ppm 1.41E+00 1.16E+00 1.27E+00 1.280

ppm@7%O2 1.41E+00 1.14E+00 1.27E+00 1.273

Location: BLR1 Stack - Method 25A

Compound: Total organic compounds (TOC) as 

Average

Run 1 2 3

lb/mmBtuO2 0.00E+00 0.00E+00 0.00E+00 0.000

ppm 0.00E+00 0.00E+00 0.00E+00 0.000

ppm@7%O2 0.00E+00 0.00E+00 0.00E+00 0.000

Thursday, January 20, 2011 Page 6 of 11
Colstrip Energy LP

Process Run Data

Run Name Value UOM Comments

Target

Value

1 Gross MW 44.5 MW 0

2 Gross MW 44.36 MW 0

3 Gross MW 44.32 MW 0

4 Gross MW 0 MW 0

5 Gross MW 0 MW 0

6 Gross MW 0 MW 0

1 Net MW 37.89 MW 0

2 Net MW 37.9 MW 0

3 Net MW 38.11 MW 0

4 Net MW 0 MW 0

5 Net MW 0 MW 0

6 Net MW 0 MW 0

1 Total Steam Flow 357.72 K lb/hr 0

2 Total Steam Flow 357.71 K lb/hr 0

3 Total Steam Flow 360.02 K lb/hr 0

4 Total Steam Flow 0 K lb/hr 0

5 Total Steam Flow 0 K lb/hr 0

6 Total Steam Flow 0 K lb/hr 0

1 Baghouse Differential Pressure 7.13 in H2O 0

2 Baghouse Differential Pressure 7.15 in H2O 0

3 Baghouse Differential Pressure 7.89 in H2O 0

4 Baghouse Differential Pressure 0 in H2O 0

5 Baghouse Differential Pressure 0 in H2O 0

6 Baghouse Differential Pressure 0 in H2O 0

1 Limestone Flow 8.12 K lb/hr 0

2 Limestone Flow 6.95 K lb/hr 0

3 Limestone Flow 7.9 K lb/hr 0

4 Limestone Flow 0 K lb/hr 0

5 Limestone Flow 0 K lb/hr 0

6 Limestone Flow 0 K lb/hr 0

1 Coal Flow 59.33 K lb/hr 0

2 Coal Flow 60.69 K lb/hr 0

3 Coal Flow 67.11 K lb/hr 0

Thursday, January 20, 2011 Page 7 of 11
Colstrip Energy LP

APCD Run Data

Process Lab Run Data

4 Coal Flow 0 K lb/hr 0

5 Coal Flow 0 K lb/hr 0

6 Coal Flow 0 K lb/hr 0

1 Heat Rate 536.08 MMBtu/hr 0

2 Heat Rate 526.24 MMBtu/hr 0

3 Heat Rate 579.22 MMBtu/hr 0

4 Heat Rate 0 MMBtu/hr 0

5 Heat Rate 0 MMBtu/hr 0

6 Heat Rate 0 MMBtu/hr 0

Run Name Value UOM Comments

Target

Value

1 ACTIVATED CARBON ADSORPTION 0 0

1 BAGHOUSE 0 0

1 DRY LIMESTONE INJECTION 0 0

Run Name Value UOM Comments

1 N/A 0

Thursday, January 20, 2011 Page 8 of 11
Colstrip Energy LP

Sampling / Stack Data Results Detail

Location BLR1 Stack - Method 0011

Average

Run Number 1 2 3

Test Date 5/4/2010 5/6/2010 5/6/2010

Run Start Time 8:30:00 AM 11:10:00 AM 8:30:00 AM

Run Finish Time 10:20:00 AM 1:00:00 PM 10:20:00 AM

Net Traversing Points 13 13 13

Net Run Time, minutes 120 120 120

Nozzle Diameter, inches 0.218 0.218 0.218 0.218

Pitot Tube Coefficient 0.84 0.84 0.84 0.840

Dry Gas Meter Calibration Factor 0.952 0.952 0.952 0.952

Barometric Pressure, inches of Mercury 26.79 26.79 26.79 26.790

Average Orifice Meter Differential, inches H2O 1.29 1.38 1.29 1.320

Dry Gas Meter Volume Sampled, cubic feet 87.765 87.825 87.765 87.785

Average Dry Gas Meter Temperature, °F 65.67 60.29 65.67 63.877

Dry Gas Meter Volume Sampled, dscf 75.409 76.260 75.409 75.693

Total Moisture Liquid collected, g 171.8 175.9 185.5 177.733

Volume of Water Vapor, standard cubic feet 8.09 8.28 8.73 8.367

Moisture Content of Stack Gas, % 9.69 9.79 10.38 9.953

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

Dry Mole Fraction 0.9031 0.9021 0.8962 0.900

Carbon Dioxide, % 13.17 13.17 13.17 13.170

Oxygen, % 7.01 7.01 7.01 7.010

Carbon Monoxide & Nitrogen, % 79.82 79.82 79.82 79.820

Fuel Factor 1.05 1.05 1.05

Dry Molecular Weight, lb/lb-Mole 30.39 30.39 30.39 30.390

Wet Molecular weight, lb/lb-Mole 29.19 29.18 29.10 29.157

Flue Gas Static Pressure, inches of H2O 1 1 1 1.000

Absolute Flue Gas Pressure, inches of Mercury 26.86 26.86 26.86 26.860

Average Stack Gas Temperature, °F 312.75 312.92 312.75 312.807

Average Velocity Head, inches of H2O 1.0350619892

4426

1.054057787

61196

1.035061989

24426

1.041

Average Stack Gas Velocity, feet/second 72.53 73.21 72.64 72.793

Stack Cross-Sectional Area, square feet 50.265 50.265 50.265 50.265

Dry Volumetric Flow Rate, dry scfm 121,174.1 122,147.8 120,430.7 121,250.867

Actual Wet Volumetric Flue Gas Flow Rate, acfm 218,743.2 220,794.0 219,075.0 219,537.400

Percent Isokinetic of Sampling Rate, % 100.6 100.9 101.2 100.900

Percent Excess Air, % 49.8 49.8 49.8 49.800

F-Factor, dscfm/MMBtu @ %O2 9780 9780 9780 9,780.000

Round Duct Diameter, inches 96 96 96

Rectangular Duct Width, inches 0 0 0

Rectangular Duct Length, inches 0 0 0

Fw 10640 10640 10640 10,640.000

Fc 1800 1800 1800 1,800.000

Thursday, January 20, 2011 Page 9 of 11
Colstrip Energy LP

Location BLR1 Stack - Method 10

Average

Run Number 1 2 3

Test Date 5/5/2010 5/5/2010 5/5/2010

Run Start Time 10:58:00 AM 2:03:00 PM 4:28:00 PM

Run Finish Time 12:58:00 PM 4:03:00 PM 6:28:00 PM

Carbon Dioxide, % 12.89 13.2 12.85 12.980

Oxygen, % 6.98 6.76 7.02 6.920

Fuel Factor 1.08 1.07 1.08

Dry Volumetric Flow Rate, dry scfm 132920 134540 134035 133,831.667

F-Factor, dscfm/MMBtu @ %O2 9780 9780 9780 9,780.000

Moisture, % 8.79 8.72 8.48 8.663

Analyzer Make Thermo

Analyzer Model 48i-HL

Analyzer Serial Number 734025183 734,025,183

.000

Operating Range 10000 0 0 3,333.333

Operating Units ppm

No. Readings/Avg. 1 0 0 0.333

Calibration Set 1 1 1 1.000

Calibration Pre Zero Cylinder ID Zero Air Zero Air Zero Air

Calibration Pre Zero Cylinder Instrument Response -0.2 0.5 0.33 0.210

Calibration Pre Zero Cylinder Bias -0.8 -0.2 -0.54 -0.513

Calibration Pre Zero Cylinder Drift 0 0 0 0.000

Calibration Pre High Cylinder ID ALM048635-

25

ALM048635

-25

ALM048635-

25

Calibration Pre High Cylinder Instrument Response 25.27 24.6 24.62 24.830

Calibration Pre High Cylinder Bias 0.27 -0.8 -0.76 -0.430

Calibration Pre High Cylinder Drift 0 0 0 0.000

Calibration Post Zero Cylinder ID Zero Air Zero Air Zero Air

Calibration Post Zero Cylinder Instrument Response 0.5 0.33 -0.37 0.153

Calibration Post Zero Cylinder Bias -0.1 -0.54 -1.94 -0.860

Calibration Post Zero Cylinder Drift 0.7 0.34 1.4 0.813

Calibration Post High Cylinder ID ALM048635-

25

ALM048635

-25

ALM048635-

25

Calibration Post High Cylinder Instrument Response 24.6 24.62 23.66 24.293

Calibration Post High Cylinder Bias -0.4 -0.76 -2.68 -1.280

Calibration Post High Cylinder Drift 0.67 0.04 1.92 0.877

Cavg 1.55 1.54 1.21 1.433

Cavg Units ppmvd ppmvd ppmvd

Cgas 1.4121 1.1624 1.2728 1.282

Cgas Units ppmvd ppmvd ppmvd

Fuel Type Override Override Override

Fw 10640 10640 10640 10,640.000

Fc 1800 1800 1800 1,800.000

Cgasw 0 0 0 0.000

Cgasw Units

Thursday, January 20, 2011 Page 10 of 11
Colstrip Energy LP

Location BLR1 Stack - Method 25A

Average

Run Number 1 2 3

Test Date 5/5/2010 5/5/2010 5/5/2010

Run Start Time 10:58:00 AM 2:03:00 PM 4:28:00 PM

Run Finish Time 12:58:00 PM 4:03:00 PM 6:28:00 PM

Carbon Dioxide, % 12.89 13.2 12.85 12.980

Oxygen, % 6.98 6.76 7.02 6.920

Fuel Factor 1.08 1.07 1.08

Dry Volumetric Flow Rate, dry scfm 132920 134540 134035 133,831.667

F-Factor, dscfm/MMBtu @ %O2 9780 9780 9780 9,780.000

Moisture, % 8.79 8.72 8.48 8.663

Analyzer Make Thermo

Analyzer Model 51 51.000

Analyzer Serial Number N/A

Operating Range 10000 0 0 3,333.333

Operating Units ppm

No. Readings/Avg. 1 0 0 0.333

Calibration Set 3 3 3 3.000

Calibration Pre Zero Cylinder ID Zero Air Zero Air Zero Air

Calibration Pre Zero Cylinder Instrument Response -1.28 -1.23 -1.24 -1.250

Calibration Pre Zero Cylinder Bias 0.22 0.27 0.26 0.250

Calibration Pre Zero Cylinder Drift 0 0 0 0.000

Calibration Pre High Cylinder ID ALM002064-

25

ALM002064

-25

ALM002064-

25

Calibration Pre High Cylinder Instrument Response 24.54 27.31 25.63 25.827

Calibration Pre High Cylinder Bias -2.36 0.41 -1.27 -1.073

Calibration Pre High Cylinder Drift 0 0 0 0.000

Calibration Post Zero Cylinder ID Zero Air Zero Air Zero Air

Calibration Post Zero Cylinder Instrument Response -1.23 -1.24 1.52 -0.317

Calibration Post Zero Cylinder Bias 0.27 0.26 3.02 1.183

Calibration Post Zero Cylinder Drift 0.05 0.01 2.76 0.940

Calibration Post High Cylinder ID ALM002064-

25

ALM002064

-25

ALM002064-

25

Calibration Post High Cylinder Instrument Response 27.31 25.63 -3.19 16.583

Calibration Post High Cylinder Bias 0.41 -1.27 -30.09 -10.317

Calibration Post High Cylinder Drift 2.77 1.68 28.82 11.090

Cavg -1.27 -1.31 -1.3 -1.293

Cavg Units ppmvw ppmvw

Cgas 0 0 0 0.000

Cgas Units ppmvd ppmvd

Fuel Type Override Override Override

Fw 10640 10640 10640 10,640.000

Fc 1800 1800 1800 1,800.000

Cgasw 0 0 0 0.000

Cgasw Units ppmvw ppmvw

Thursday, January 20, 2011 Page 11 of 11