### Name:

Title: Company: Sign Date: Name: Title: Company: Sign Date: Permitted Facility Representative / Date Testing Company Representative / Date 

## BLR1 EU ICR Section 114 Test April 2010

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.

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### BLR1 EU ICR Section 114 Test April 2010

Facility Information: Silver Bay Power
10 Outer Drive

Silver Bay MN 55614 Contact: Mr. Scott Gischia Phone: (218)226-6076 Fax: (218)226-6096 Email: Scott.Gischia@CliffsNR.com Testing Company: Barr Engineering Company
4700 W. 77th St.

Minneapolis MN 55435 Contact: Mr. Mark Petersen Phone: (952)832-2955 Fax: (952)832-2601 Email: mpetersen@barr.com

Air Permit Number: 07500003-007 Permitted Source ID/Name: Power Boiler 1 BLR1 Permitted Maximum Process Rate: 517 MMBtu/hr Max. Normal Operation Process Rate: 45 MW Target Process Test Rate 42 MW

Description of the source (including control equipment). Please see the attachments for source or process flow diagram:
517 MMBtu/hr steam boiler. Produces steam for a 45 MW/hr electric turbine Industry/SCC/NAIS 212210

Sampling Location Information:

Test Parameter Information: AFS #: FRS #:

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 - 48 107.75 8 65 2 8.98 48 0 0 Stack - M2 107.75 8 65 2 8.98 16 0 0 Stack - M5 107.75 8 65 2 8.98 24 0 0 Stack - OTM27 107.75 8 65 2 8.98 12 0 0

Target Parameter Test Method Number of

Test Runs Test Run

Duration Sample

Points Comments Location Chromium Method 29 3 240 0 Stack - 48 Mercury Method 29 3 240 0 Stack - 48 Antimony Method 29 3 240 0 Stack - 48



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### BLR1 EU ICR Section 114 Test April 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.

Arsenic Method 29 3 240 0 Stack - 48 Cadmium Method 29 3 240 0 Stack - 48 Cobalt Method 29 3 240 0 Stack - 48 Lead Method 29 3 240 0 Stack - 48 Manganese Method 29 3 240 0 Stack - 48 Nickel Method 29 3 240 0 Stack - 48 Selenium Method 29 3 240 0 Stack - 48 Beryllium Method 29 3 240 0 Stack - 48 Carbon Monoxide Method 10 3 120 0 Stack - M2 Total organic compounds

(TOC) as Propane Method 25A 3 120 0 Stack - M2

Filterable PM2.5 OTM - 27/28 3 337 0 Stack - OTM27 Inorganic (Aqueous)

Condensible Part. OTM - 27/28 3 337 0 Stack - OTM27 Organic Condensible

Particulate OTM - 27/28 3 337 0 Stack - OTM27



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### BLR1 EU ICR Section 114 Test April 2010

Sampling / Stack Data Results Summary



### Location Stack - 48 - Method 29 Average Run Number 1 2 3
Test Date 3/16/2010 3/16/2010 3/17/2010 Run Start Time 11:14:00 AM 4:17:00 PM 9:01:00 AM Run Finish Time 3:24:00 PM 8:25:00 PM 1:34:00 PM Net Run Time, minutes 240 240 240 Dry Gas Meter Volume Sampled, dscf 158.607 161.849 173.778 164.745 Moisture Content of Stack Gas, % 9.09 8.68 9.18 8.983 Moisture Saturation at Stack Gas Temperature, % 100.00 100.00 100.00 100.000 Carbon Dioxide, % 10.6 10.5 10.5 10.533 Oxygen, % 9.3 9.4 9.4 9.367 Average Stack Gas Temperature, °F 318.38 318.42 323.08 319.960 Dry Volumetric Flow Rate, dry scfm 162,621.6 163,184.6 173,553.7 166,453.300 Actual Wet Volumetric Flue Gas Flow Rate, acfm 268,008.3 267,742.3 289,018.8 274,923.133 Percent Isokinetic of Sampling Rate, % 98.4 100.0 101.0 99.800 F-Factor, dscfm/MMBtu @ %O2 9883 9883 9883 9,883.000
Fw 10700 11700 11700 11,366.667
Fc 1800 1800 1800 1,800.000



### Location Stack - M2 - 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



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### BLR1 EU ICR Section 114 Test April 2010

Location Stack - M2 - 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 - OTM27 - 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



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### BLR1 EU ICR Section 114 Test April 2010

Emissions Summary



### Location: Stack - 48 - Method 29 Compound: Antimony Average RunNumber 1 2 3 Mass_mg 0.000369 0.0002005 0.0001 0.000 lb/mmBtuO2 9.13E-08 4.91E-08 2.28E-08 0.000 

### Compound: Arsenic Average RunNumber 1 2 3 Mass_mg 0.001003 0.001469 0.001411 0.001 lb/mmBtuO2 2.48E-07 3.59E-07 3.22E-07 0.000 

### Compound: Beryllium Average RunNumber 1 2 3 Mass_mg 0.000157 0.000157 0.000219 0.000 lb/mmBtuO2 3.89E-08 3.84E-08 4.99E-08 0.000 

### Compound: Cadmium Average RunNumber 1 2 3 Mass_mg 0.000364 0.000308 0.000352 0.000 lb/mmBtuO2 9.01E-08 7.54E-08 8.02E-08 0.000 

### Compound: Chromium Average RunNumber 1 2 3 Mass_mg 0.003655 0.003617 0.00745 0.005 lb/mmBtuO2 9.05E-07 8.85E-07 1.70E-06 0.000 

### Compound: Cobalt Average RunNumber 1 2 3 Mass_mg 0.00143 0.001395 0.00202 0.002 lb/mmBtuO2 3.54E-07 3.41E-07 4.60E-07 0.000 

### Compound: Lead Average RunNumber 1 2 3 Mass_mg 0.00456 0.00419 0.002675 0.004 lb/mmBtuO2 1.13E-06 1.03E-06 6.10E-07 0.000 

### Compound: Manganese Average RunNumber 1 2 3 Mass_mg 0.008741 0.008736 0.011561 0.010 lb/mmBtuO2 2.16E-06 2.14E-06 2.63E-06 0.000 

### Compound: Mercury Average



### Wednesday, February 02, 2011 Page 6 of 12

### BLR1 EU ICR Section 114 Test April 2010

Process Run Data RunNumber 1 2 3 Mass_mg 0.020266 0.022364 0.021061 0.021 lb/mmBtuO2 5.02E-06 5.47E-06 4.80E-06 0.000 

### Compound: Nickel Average RunNumber 1 2 3 Mass_mg 0.003275 0.0029995 0.005241 0.004 lb/mmBtuO2 8.11E-07 7.34E-07 1.19E-06 0.000 

### Compound: Selenium Average RunNumber 1 2 3 Mass_mg 0.001826 0.0022405 0.0029 0.002 lb/mmBtuO2 4.52E-07 5.48E-07 6.61E-07 0.000



### Location: Stack - M2 - Method 10 Compound: Carbon Monoxide Average Run 1 2 3 lb/mmBtuO2 0.00E+00 1.31E-04 1.32E-04 0.000 ppm 0.00E+00 1.00E-01 1.00E-01 0.067 ppm@7%O2 0.00E+00 1.22E-01 1.23E-01 0.082



### Location: Stack - M2 - Method 25A Compound: Total organic compounds (TOC) as Average Run 1 2 3 lb/mmBtuO2 1.61E-03 0.00E+00 1.78E-03 0.001 ppm 7.77E-01 0.00E+00 8.58E-01 0.545 ppm@7%O2 9.56E-01 0.00E+00 1.06E+00 0.672



### Location: Stack - OTM27 - OTM - 27/28 Compound: Filterable PM2.5 Average RunNumber 1 2 3 Mass_mg 5.65173913042596 15.0660869565021 4.18043478260047 8.299 lb/mmBtuO2 1.88E-03 4.61E-03 1.34E-03 0.003 

### Compound: Inorganic (Aqueous) Condensible Pa Average RunNumber 1 2 3 Mass_mg 13.4238421052633 1.9888245614036 17.7313333333336 11.048 lb/mmBtuO2 4.45E-03 6.09E-04 5.68E-03 0.004 

### Compound: Organic Condensible Particulate Average RunNumber 1 2 3 Mass_mg 1.72250000000016 0.981250000000124 1.51750000000021 1.407 lb/mmBtuO2 5.72E-04 3.00E-04 4.86E-04 0.000



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### BLR1 EU ICR Section 114 Test April 2010

Process Run Data

APCD Run Data

Process Lab Run Data 

### Run Name Value UOM Comments Target Value 1 Subbituminous Coal Burned 31.1 Tons/hr 32


### 2 Subbituminous Coal Burned 31.1 Tons/hr 32
3 Subbituminous Coal Burned 31.1 Tons/hr 32
4 Subbituminous Coal Burned 0 Tons/hr 32


### 5 Subbituminous Coal Burned 0 Tons/hr 32
6 Subbituminous Coal Burned 0 Tons/hr 32
7 Subbituminous Coal Burned 0 Tons/hr 32


### 1 Heat Input 595 MMBtu/hr 517
1 Steam Output 8073 1000lb steam/hr 9000



### Run Name Value UOM Comments Target Value 1 BAGHOUSE 2.1 in. H2O 0


### 2 BAGHOUSE 2.3 in. H2O 0

Run Name Value UOM Comments 1 Coal Heating value 11700 Btu/lb 

### 1 Chloride 100.5 mg/Kg 1 Fluoride 56 mg/Kg 1 mercury 70.5 ng/g 1 Antimony antimony 1.1 mg/Kg



### 1 Arsenic 1.1 mg/Kg 1 Beryllium 0.32 mg/Kg 1 Cadmium 0.04 mg/Kg 

### 1 Chromium 3.25 mg/Kg 1 Cobalt 1.7 mg/Kg 1 Lead 2.35 mg/Kg 

### 1 Manganese 11.9 mg/Kg 1 Nickel 3.05 mg/Kg 1 Selemium 1.1 mg/Kg



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### BLR1 EU ICR Section 114 Test April 2010

Sampling / Stack Data Results Detail



### Location Stack - 48 - Method 29 Average Run Number 1 2 3 Test Date 3/16/2010 3/16/2010 3/17/2010 Run Start Time 11:14:00 AM 4:17:00 PM 9:01:00 AM Run Finish Time 3:24:00 PM 8:25:00 PM 1:34:00 PM Net Traversing Points 48 48 48 Net Run Time, minutes 240 240 240 Nozzle Diameter, inches 0.219 0.219 0.219 0.219 Pitot Tube Coefficient 0.84 0.84 0.84 0.840 Dry Gas Meter Calibration Factor 0.9992 0.9992 0.9992 0.999 Barometric Pressure, inches of Mercury 29.5 29.5 29.4 29.467 Average Orifice Meter Differential, inches H2O 1.57 1.57 1.87 1.670 Dry Gas Meter Volume Sampled, cubic feet 165.700 165.600 183.450 171.583 Average Dry Gas Meter Temperature, °F 85.56 74.31 89.82 83.230 Dry Gas Meter Volume Sampled, dscf 158.607 161.849 173.778 164.745 Total Moisture Liquid collected, g 337 327 373 345.667 Volume of Water Vapor, standard cubic feet 15.86 15.39 17.56 16.270 Moisture Content of Stack Gas, % 9.09 8.68 9.18 8.983 Moisture Saturation at Stack Gas Temperature, % 100.00 100.00 100.00 100.000 Dry Mole Fraction 0.9091 0.9132 0.9082 0.910 Carbon Dioxide, % 10.6 10.5 10.5 10.533 Oxygen, % 9.3 9.4 9.4 9.367 Carbon Monoxide & Nitrogen, % 80.1 80.1 80.1 80.100 Fuel Factor 1.09 1.10 1.10 Dry Molecular Weight, lb/lb-Mole 30.07 30.06 30.06 30.063 Wet Molecular weight, lb/lb-Mole 28.97 29.01 28.95 28.977 Flue Gas Static Pressure, inches of H2O -0.8 -0.8 -0.8 -0.800 Absolute Flue Gas Pressure, inches of Mercury 29.44 29.44 29.34 29.407 Average Stack Gas Temperature, °F 318.38 318.42 323.08 319.960 Average Velocity Head, inches of H2O 1.0572984135 216 1.056506485

50681 1.217013164

80975 1.110
Average Stack Gas Velocity, feet/second 70.54 70.47 76.07 72.360 Stack Cross-Sectional Area, square feet 63.323 63.323 63.323 63.323 Dry Volumetric Flow Rate, dry scfm 162,621.6 163,184.6 173,553.7 166,453.300 Actual Wet Volumetric Flue Gas Flow Rate, acfm 268,008.3 267,742.3 289,018.8 274,923.133 Percent Isokinetic of Sampling Rate, % 98.4 100.0 101.0 99.800 Percent Excess Air, % 78.5 80.0 80.0 79.500 F-Factor, dscfm/MMBtu @ %O2 9883 9883 9883 9,883.000 Round Duct Diameter, inches 107.75 107.75 107.75 Rectangular Duct Width, inches 0 0 0 Rectangular Duct Length, inches 0 0 0 Fw 10700 11700 11700 11,366.667 Fc 1800 1800 1800 1,800.000



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### BLR1 EU ICR Section 114 Test April 2010

Location Stack - M2 - 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



### Wednesday, February 02, 2011 Page 10 of 12

### BLR1 EU ICR Section 114 Test April 2010

Location Stack - M2 - 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



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### BLR1 EU ICR Section 114 Test April 2010

Location Stack - OTM27 - 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 02, 2011 Page 12 of 12