### Name: Steve Mills

Title: Designated Representative Company: Public Service Company of Colorado Sign Date: 6/18/2010 Name: Patrick Clark Title: Owner Company:Airtech Environmental Services Sign Date: 6/18/2010 Permitted Facility Representative / Date Testing Company Representative / Date 

## Hayden Unit 2 2010 HAP 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.

Friday, February 18, 2011 Page 1 of 16

### Hayden Unit 2 2010 HAP ICR
6/18/2010 Facility Information: Hayden 13125 U.S. Highway 40

Hayden CO81639 Contact:Chad Campbell Phone: 303-294-2111 Fax: 303-294-2859 Email: chad.campbell@xcelenergy.com Testing Company: Airtech Environmental Services, Inc. 5776 Lamar St.

Arvada CO80002 Contact:Patrick Clark Phone:303-670-0530 Fax: 303-670-4130 Email: pclark@airtechenv.com

Air Permit Number: 96OPRO132 Permitted Source ID/Name: Unit 2 Boiler 2 Permitted Maximum Process Rate: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: Source is a CE Tangentially Fired pulverized coal boiler with Low NOx Burners and seperated over-fire air for NOx control, a spray dryer absorber for SO2 control and a baghouse (FFDC) for particulate control. Industry/SCC/NAIS221112

Sampling Location Information:

Test Parameter Information: AFS #:107.0001.002 FRS #:

SCC / Description10100212 External Combustion Boilers - Electric Generation - Bituminous/Subbituminous Coal - Pulverized Coal: Dry Bottom (Tangential) (Bituminous 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 291 11.67 2.47 4 0 0 0 0

Target Parameter Test Method Number of

Test Runs Test Run

Duration Sample

Points Comments Location Flowrate Method 1 - 4 3 60 0 Stack % H2O Method 1 - 4 3 60 0 Stack Hydrogen Fluoride Method 26A 3 0 Stack Hydrogen Chloride Method 26A 3 0 Stack Total Particulate OTM - 27/28 3 240 0 Stack Regulation Description Compound Limit Unit Colorado Operating Permit 96OPRO132, Condition 1.1 Total Particulate 0.03 lb/million BTU using CO2



### Friday, February 18, 2011 Page 2 of 16

### Hayden Unit 2 2010 HAP ICR
6/18/2010

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. Per discussion with Peter Westlin from the EPA on January 22, 2010, a three point traverse will be used in lieu of isokinetic testing for Method 26A as there are no entrained water droplets in the flue gas stream. Sampling will be conducted at a constant sampling rate of 0.75 cfm.

Filterable PM2.5 OTM - 27/28 3 240 0 Stack Chromium Method 29 3 0 Stack Selenium Method 29 3 0 Stack Nickel Method 29 3 0 Stack Manganese Method 29 3 0 Stack Lead Method 29 3 0 Stack Antimony Method 29 3 0 Stack Cobalt Method 29 3 0 Stack Filterable Particulate Method 29 3 240 0 Stack Beryllium Method 29 3 0 Stack Cadmium Method 29 3 0 Stack Arsenic Method 29 3 0 Stack



### Friday, February 18, 2011 Page 3 of 16

### Hayden Unit 2 2010 HAP ICR
6/18/2010 Sampling / Stack Data Results Summary


### Location Stack - Method 26A Average Run Number 1 2 3 Test Date 2/23/2010 2/24/2010 2/25/2010 Run Start Time 9:00:00 AM 8:20:00 AM 7:55:00 AM

Run Finish Time 12:00:00 PM 11:20:00 AM10:55:00 AM

Net Run Time, minutes Dry Gas Meter Volume Sampled, dscf 114.314 111.762 109.725 111.934 Moisture Content of Stack Gas, % 12.93 13.12 12.54 12.863 Moisture Saturation at Stack Gas Temperature, % 46.55 45.98 46.93 46.487 Carbon Dioxide, % 14.3 13.9 14.2 14.133 Oxygen, % 4.4 4.8 4.8 4.667 Average Stack Gas Temperature, °F 165.28 164.61 165.28 165.057 Dry Volumetric Flow Rate, dry scfm 555,798.2 554,556.6 556,147.9 555,500.900 Actual Wet Volumetric Flue Gas Flow Rate, acfm 964,924.2 967,141.1 969,080.9 967,048.733 Percent Isokinetic of Sampling Rate, % F-Factor, dscfm/MMBtu @ %O2 9684 9663 9678 9,675.000 Fw 0 0 0 0.000 Fc 0 0 0 0.000



### Friday, February 18, 2011 Page 4 of 16

### Hayden Unit 2 2010 HAP ICR
6/18/2010
Location Stack - Method 29 Average Run Number 1 2 3 Test Date 2/23/2010 2/24/2010 2/25/2010 Run Start Time 8:21:00 AM 8:00:00 AM Run Finish Time 3:43:00 PM 1:41:00 PM Net Run Time, minutes Dry Gas Meter Volume Sampled, dscf 158.829 160.199 146.178 155.069 Moisture Content of Stack Gas, % 13.13 13.08 15.30 13.837 Moisture Saturation at Stack Gas Temperature, % 45.59 45.86 46.71 46.053 Carbon Dioxide, % 14.3 14 14.1 14.133 Oxygen, % 4.3 4.7 4.9 4.633 Average Stack Gas Temperature, °F 164.39 164.50 165.08 164.657 Dry Volumetric Flow Rate, dry scfm 600,923.4 608,969.6 579,751.3 596,548.100 Actual Wet Volumetric Flue Gas Flow Rate, acfm 1,044,179.91,061,361.2 1,042,794.31,049,445.13 3 Percent Isokinetic of Sampling Rate, % F-Factor, dscfm/MMBtu @ %O2 9684 9663 9678 9,675.000 Fw 0 0 0.000 Fc 0 0 0.000



### Location Stack - Method 29 3 Average Run Number 4 Test Date 2/25/2010 Run Start Time 3:22:00 PM Run Finish Time 7:55:00 PM Net Run Time, minutes Dry Gas Meter Volume Sampled, dscf 147.894 147.894 Moisture Content of Stack Gas, % 15.06 15.060 Moisture Saturation at Stack Gas Temperature, % 46.22 46.220 Carbon Dioxide, % 13.4 13.400 Oxygen, % 4.9 4.900 Average Stack Gas Temperature, °F 164.63 164.630 Dry Volumetric Flow Rate, dry scfm 587,997.5 587,997.500 Actual Wet Volumetric Flue Gas Flow Rate, acfm 1,053,879.0 1,053,879.00 0 Percent Isokinetic of Sampling Rate, % F-Factor, dscfm/MMBtu @ %O2 9724 9,724.000 Fw 0 0.000 Fc 0 0.000



### Friday, February 18, 2011 Page 5 of 16

### Hayden Unit 2 2010 HAP ICR
6/18/2010
Location Stack - OTM - 27/28 Average Run Number 1 2 3 Test Date 2/23/2010 2/24/2010 2/25/2010 Run Start Time 8:21:00 AM 8:06:00 AM 9:05:00 AM

Run Finish Time 4:52:00 PM4:45:00 PM 5:50:00 PM Net Run Time, minutes Dry Gas Meter Volume Sampled, dscf 135.310 130.178 134.136 133.208 Moisture Content of Stack Gas, % 12.92 13.33 13.28 13.177 Moisture Saturation at Stack Gas Temperature, % 48.17 47.92 48.19 48.093 Carbon Dioxide, % 14.4 14 13.4 13.933 Oxygen, % 4.5 4.7 4.9 4.700 Average Stack Gas Temperature, °F 166.75 166.38 166.42 166.517 Dry Volumetric Flow Rate, dry scfm 591,666.9 594,647.1 587,271.1 591,195.033 Actual Wet Volumetric Flue Gas Flow Rate, acfm 1,029,492.61,042,517.2 1,033,926.51,035,312.10 0 Percent Isokinetic of Sampling Rate, % F-Factor, dscfm/MMBtu @ %O2 9684 9663 9678 9,675.000 Fw 0 0 0 0.000 Fc 0 0 0 0.000



### Friday, February 18, 2011 Page 6 of 16

### Hayden Unit 2 2010 HAP ICR
6/18/2010 Emissions Summary


### Location: Stack - Method 26A Compound: Hydrogen Chloride Average RunNumber 1 2 3 Mass_mg 0.431 0.641 0.662 0.578 lb/mmBtuO2 1.02E-04 1.59E-04 1.67E-04 0.000 

### Compound: Hydrogen Fluoride Average RunNumber 1 2 3 Mass_mg 0.26 0.247 0.255 0.254 lb/mmBtuO2 6.15E-05 6.11E-05 6.44E-05 0.000



### Location: Stack - Method 29 Compound: Antimony Average RunNumber 1 2 3 Mass_mg 0.000457 0.000616 0.000197 0.000 lb/mmBtuO2 7.73E-08 1.06E-07 3.76E-08 0.000 

### Compound: Arsenic Average RunNumber 1 2 3 Mass_mg 0.000471 0.00047 0.000416 0.000 lb/mmBtuO2 7.97E-08 8.06E-08 7.93E-08 0.000 

### Compound: Beryllium Average RunNumber 1 2 3 Mass_mg 0.000084 0.000078 0.000086 0.000 lb/mmBtuO2 1.42E-08 1.34E-08 1.64E-08 0.000 

### Compound: Cadmium Average RunNumber 1 2 3 Mass_mg 0.003573 0.000158 0.002873 0.002 lb/mmBtuO2 6.05E-07 2.71E-08 5.48E-07 0.000 

### Compound: Chromium Average RunNumber 1 2 3 Mass_mg 0.019038 0.005648 0.004388 0.010 lb/mmBtuO2 3.22E-06 9.69E-07 8.37E-07 0.000 

### Compound: Cobalt Average RunNumber 1 2 3 Mass_mg 0.00034 0.000264 0.000285 0.000 lb/mmBtuO2 5.75E-08 4.53E-08 5.43E-08 0.000



### Friday, February 18, 2011 Page 7 of 16

### Hayden Unit 2 2010 HAP ICR
6/18/2010 Compound: Filterable Particulate Average RunNumber 1 2 3 Mass_mg 16.7 16.3 16 16.333 lb/mmBtuO2 2.83E-03 2.80E-03 3.05E-03 0.003 

### Compound: Lead Average RunNumber 1 2 3 Mass_mg 0.00745 0.00443 0.00519 0.006 lb/mmBtuO2 1.26E-06 7.60E-07 9.90E-07 0.000 

### Compound: Manganese Average RunNumber 1 2 3 Mass_mg 0.003221 0.001661 0.00172 0.002 lb/mmBtuO2 5.45E-07 2.85E-07 3.28E-07 0.000 

### Compound: Nickel Average RunNumber 1 2 3 Mass_mg 0.008841 0.002725 0.001915 0.004 lb/mmBtuO2 1.50E-06 4.68E-07 3.65E-07 0.000 

### Compound: Selenium Average RunNumber 1 2 3 Mass_mg 0.000425 0.0002 0.000274 0.000 lb/mmBtuO2 7.19E-08 3.43E-08 5.22E-08 0.000



### Location: Stack - Method 29 3 

### Compound: Antimony Average RunNumber 4 Mass_mg 0.001404 0.001 lb/mmBtuO2 2.66E-07 0.000 

### Compound: Arsenic Average RunNumber 4 Mass_mg 0.000373 0.000 lb/mmBtuO2 7.06E-08 0.000 

### Compound: Beryllium Average RunNumber 4 Mass_mg 0.000082 0.000 lb/mmBtuO2 1.55E-08 0.000 

### Compound: Cadmium Average RunNumber 4 Mass_mg 0.000697 0.001 

### Friday, February 18, 2011 Page 8 of 16

### Hayden Unit 2 2010 HAP ICR
6/18/2010 lb/mmBtuO2 1.32E-07 0.000 

### Compound: Chromium Average RunNumber 4 Mass_mg 0.011528 0.012 lb/mmBtuO2 2.18E-06 0.000 

### Compound: Cobalt Average RunNumber 4 Mass_mg 0.00036 0.000 lb/mmBtuO2 6.82E-08 0.000 

### Compound: Filterable Particulate Average RunNumber 4 Mass_mg 12.3 12.300 lb/mmBtuO2 2.33E-03 0.002 

### Compound: Lead Average RunNumber 4 Mass_mg 0.0066 0.007 lb/mmBtuO2 1.25E-06 0.000 

### Compound: Manganese Average RunNumber 4 Mass_mg 0.003971 0.004 lb/mmBtuO2 7.52E-07 0.000 

### Compound: Nickel Average RunNumber 4 Mass_mg 0.005805 0.006 lb/mmBtuO2 1.10E-06 0.000 

### Compound: Selenium Average RunNumber 4 Mass_mg 0.000239 0.000 lb/mmBtuO2 4.53E-08 0.000



### Location: Stack - OTM - 27/28 

### Compound: Filterable PM2.5 Average RunNumber 1 2 3 Mass_mg 1 1.8 1.85 1.550 lb/mmBtuO2 2.01E-04 3.80E-04 3.84E-04 0.000 

### Compound: Total Particulate Average



### Friday, February 18, 2011 Page 9 of 16

### Hayden Unit 2 2010 HAP ICR
6/18/2010

Process Run Data RunNumber 1 2 3 Mass_mg 15 14.9 10.5 13.467 lb/mmBtuO2 3.02E-03 3.15E-03 2.18E-03 0.003



### Friday, February 18, 2011 Page 10 of 16

### Hayden Unit 2 2010 HAP ICR
6/18/2010 Process Run Data

APCD Run Data

Process Lab Run Data 

### Run Name Value UOM Comments Target Value 1 Heat Input 245.23 Million Btus/million BTU using CO2 0 

### 1 Gross load 281.61 MW 1 Spray dryer absorber pressure drop 2.96 " wc
1 Spray dryer absorber slurry flow 269.76 gpm 

### 1 Main Steam Flow 1969.2 KPPH 0
1 Heat Input 2822.7 MMBtu/hr 0
1 Flue Gas Flow Rate 39532 KSCFH 0 

### 1 SO2 Control Setpoint 0.12 lb/MMBtu 0.13
2 Heat Input 244.34 Million Btus/million BTU using CO2 0
2 Gross load 281.66 MW 

### 2 Spray dryer absorber pressure drop 5.93 " wc
2 Spray dryer absorber slurry flow 262.78 gpm 2 Main Steam Flow 1969.4 KPPH 0 

### 2 Heat Input 2804.8 MMBtu/hr 0
2 Flue Gas Flow Rate 39592 KSCFH 0
2 SO2 Control Setpoint 0.12 lb/MMBtu 0.13 

### 3 Heat Input 242.75 Million Btus/million BTU using CO2 0 3 Gross load 281.46 MW 3 Spray dryer absorber pressure drop 2.96 " wc 

### 3 Spray dryer absorber slurry flow 268.37 gpm 3 Main Steam Flow 1959.7 KPPH 0 3 Heat Input 2802.3 MMBtu/hr 0 

### 3 Flue Gas Flow Rate 39383 KSCFH 0 3 SO2 Control Setpoint 0.12 lb/MMBtu 0.13

Run Name Value UOM Comments Target Value 

### 1 LOW NOX BURNERS 0 0
1 OVERFIRE AIR 0 0
1 DRY SCRUBBER 0 

### 1 BAGHOUSE 0 0

Friday, February 18, 2011 Page 11 of 16

### Hayden Unit 2 2010 HAP ICR
6/18/2010

Friday, February 18, 2011 Page 12 of 16

### Hayden Unit 2 2010 HAP ICR
6/18/2010 Sampling / Stack Data Results Detail


### Location Stack - Method 26A Average Run Number 1 2 3 Test Date 2/23/2010 2/24/2010 2/25/2010 Run Start Time 9:00:00 AM8:20:00 AM 7:55:00 AM Run Finish Time 12:00:00 PM11:20:00 AM10:55:00 AM Net Traversing Points 18 18 18 Net Run Time, minutes Nozzle Diameter, inches Pitot Tube Coefficient 0.84 0.84 0.84 0.840 Dry Gas Meter Calibration Factor 1.0045 1.0045 1.0045 1.005 Barometric Pressure, inches of Mercury 23.45 23.37 23.26 23.360 Average Orifice Meter Differential, inches H2O 2.00 2.00 2.00 2.000 Dry Gas Meter Volume Sampled, cubic feet 145.230 143.460 142.280 143.657 Average Dry Gas Meter Temperature, °F 71.42 75.11 78.03 74.853 Dry Gas Meter Volume Sampled, dscf 114.314 111.762 109.725 111.934 Total Moisture Liquid collected, g 360.6 358.7 334.1 351.133 Volume of Water Vapor, standard cubic feet 16.97 16.88 15.73 16.527 Moisture Content of Stack Gas, % 12.93 13.12 12.54 12.863 Moisture Saturation at Stack Gas Temperature, % 46.55 45.98 46.93 46.487 Dry Mole Fraction 0.8707 0.8688 0.8746 0.871 Carbon Dioxide, % 14.3 13.9 14.2 14.133 Oxygen, % 4.4 4.8 4.8 4.667 Carbon Monoxide & Nitrogen, % 81.3 81.3 81 81.200 Fuel Factor 1.15 1.16 1.13 Dry Molecular Weight, lb/lb-Mole 30.46 30.42 30.46 30.447 Wet Molecular weight, lb/lb-Mole 28.85 28.79 28.90 28.847 Flue Gas Static Pressure, inches of H2O -0.2 -0.2 -0.2 -0.200 Absolute Flue Gas Pressure, inches of Mercury 23.44 23.36 23.25 23.350 Average Stack Gas Temperature, °F 165.28 164.61 165.28 165.057 Average Velocity Head, inches of H2O 0.2543418987 334660.254287035

461330.254803893

009981 0.254
Average Stack Gas Velocity, feet/second 34.82 34.90 34.97 34.897 Stack Cross-Sectional Area, square feet 461.863 461.863 461.863 461.863 Dry Volumetric Flow Rate, dry scfm 555,798.2 554,556.6 556,147.9555,500.900 Actual Wet Volumetric Flue Gas Flow Rate, acfm 964,924.2 967,141.1 969,080.9967,048.733 Percent Isokinetic of Sampling Rate, % Percent Excess Air, % 25.8 28.8 28.9 27.833 F-Factor, dscfm/MMBtu @ %O2 9684 9663 9678 9,675.000 Round Duct Diameter, inches 291 291 291 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



### Friday, February 18, 2011 Page 13 of 16

### Hayden Unit 2 2010 HAP ICR
6/18/2010
Location Stack - Method 29 Average Run Number 1 2 3 Test Date 2/23/2010 2/24/2010 2/25/2010 Run Start Time 8:21:00 AM 8:00:00 AM Run Finish Time 3:43:00 PM 1:41:00 PM Net Traversing Points 36 36 24 Net Run Time, minutes Nozzle Diameter, inches Pitot Tube Coefficient 0.84 0.84 0.84 0.840 Dry Gas Meter Calibration Factor 1.0034 1.0034 1.0034 1.003 Barometric Pressure, inches of Mercury 23.45 23.37 23.26 23.360 Average Orifice Meter Differential, inches H2O 0.92 0.94 2.07 1.310 Dry Gas Meter Volume Sampled, cubic feet 203.370 206.750 188.300 199.473 Average Dry Gas Meter Temperature, °F 73.21 75.64 74.02 74.290 Dry Gas Meter Volume Sampled, dscf 158.829 160.199 146.178 155.069 Total Moisture Liquid collected, g 510 512.1 560.9 527.667 Volume of Water Vapor, standard cubic feet 24.01 24.10 26.40 24.837 Moisture Content of Stack Gas, % 13.13 13.08 15.30 13.837 Moisture Saturation at Stack Gas Temperature, % 45.59 45.86 46.71 46.053 Dry Mole Fraction 0.8687 0.8692 0.847 0.862 Carbon Dioxide, % 14.3 14 14.1 14.133 Oxygen, % 4.3 4.7 4.9 4.633 Carbon Monoxide & Nitrogen, % 81.4 81.3 81 81.233 Fuel Factor 1.16 1.16 1.13 Dry Molecular Weight, lb/lb-Mole 30.46 30.43 30.45 30.447 Wet Molecular weight, lb/lb-Mole 28.82 28.80 28.55 28.723 Flue Gas Static Pressure, inches of H2O -0.2 -0.2 -0.2 -0.200 Absolute Flue Gas Pressure, inches of Mercury 23.44 23.36 23.25 23.350 Average Stack Gas Temperature, °F 164.39 164.50 165.08 164.657 Average Velocity Head, inches of H2O 0.2979199793 976720.306421340

7661560.291517925

187565 0.299
Average Stack Gas Velocity, feet/second 37.68 38.30 37.63 37.870 Stack Cross-Sectional Area, square feet 461.863 461.863 461.863 461.863 Dry Volumetric Flow Rate, dry scfm 600,923.4 608,969.6 579,751.3596,548.100 Actual Wet Volumetric Flue Gas Flow Rate, acfm 1,044,179.9 1,061,361.2 1,042,794.31,049,445.1 33 Percent Isokinetic of Sampling Rate, % Percent Excess Air, % 25.0 28.0 29.7 27.567 F-Factor, dscfm/MMBtu @ %O2 9684 9663 9678 9,675.000 Round Duct Diameter, inches 291 291 291 Rectangular Duct Width, inches 0 0 0 Rectangular Duct Length, inches 0 0 0 Fw 0 0 0.000 Fc 0 0 0.000



### Friday, February 18, 2011 Page 14 of 16

### Hayden Unit 2 2010 HAP ICR
6/18/2010
Location Stack - Method 29 3 Average Run Number 4 Test Date 2/25/2010 Run Start Time 3:22:00 PM Run Finish Time 7:55:00 PM Net Traversing Points 24 Net Run Time, minutes Nozzle Diameter, inches Pitot Tube Coefficient 0.84 0.840 Dry Gas Meter Calibration Factor 1.0034 1.003 Barometric Pressure, inches of Mercury 23.26 23.260 Average Orifice Meter Differential, inches H2O 2.07 2.070 Dry Gas Meter Volume Sampled, cubic feet 189.290 189.290 Average Dry Gas Meter Temperature, °F 70.60 70.600 Dry Gas Meter Volume Sampled, dscf 147.894 147.894 Total Moisture Liquid collected, g 557.2 557.200 Volume of Water Vapor, standard cubic feet 26.23 26.230 Moisture Content of Stack Gas, % 15.06 15.060 Moisture Saturation at Stack Gas Temperature, % 46.22 46.220 Dry Mole Fraction 0.8494 0.849 Carbon Dioxide, % 13.4 13.400 Oxygen, % 4.9 4.900 Carbon Monoxide & Nitrogen, % 81.7 81.700 Fuel Factor 1.19 Dry Molecular Weight, lb/lb-Mole 30.34 30.340 Wet Molecular weight, lb/lb-Mole 28.48 28.480 Flue Gas Static Pressure, inches of H2O -0.2 -0.200 Absolute Flue Gas Pressure, inches of Mercury 23.25 23.250 Average Stack Gas Temperature, °F 164.63 164.630 Average Velocity Head, inches of H2O 0.2972533814 09646 0.297
Average Stack Gas Velocity, feet/second 38.03 38.030 Stack Cross-Sectional Area, square feet 461.863 461.863 Dry Volumetric Flow Rate, dry scfm 587,997.5 587,997.500 Actual Wet Volumetric Flue Gas Flow Rate, acfm 1,053,879.0 1,053,879.0 00 Percent Isokinetic of Sampling Rate, % Percent Excess Air, % 29.4 29.400 F-Factor, dscfm/MMBtu @ %O2 9724 9,724.000 Round Duct Diameter, inches 291 Rectangular Duct Width, inches 0 Rectangular Duct Length, inches 0 Fw 0 0.000 Fc 0 0.000



### Friday, February 18, 2011 Page 15 of 16

### Hayden Unit 2 2010 HAP ICR
6/18/2010
Location Stack - OTM - 27/28 Average Run Number 1 2 3 Test Date 2/23/2010 2/24/2010 2/25/2010 Run Start Time 8:21:00 AM8:06:00 AM 9:05:00 AM Run Finish Time 4:52:00 PM4:45:00 PM 5:50:00 PM Net Traversing Points 24 24 24 Net Run Time, minutes Nozzle Diameter, inches Pitot Tube Coefficient 0.84 0.84 0.84 0.840 Dry Gas Meter Calibration Factor 1.0018 1.0018 1.0018 1.002 Barometric Pressure, inches of Mercury 23.45 23.37 23.26 23.360 Average Orifice Meter Differential, inches H2O 0.35 0.35 0.34 0.347 Dry Gas Meter Volume Sampled, cubic feet 173.230 168.010 172.950 171.397 Average Dry Gas Meter Temperature, °F 71.33 73.81 70.77 71.970 Dry Gas Meter Volume Sampled, dscf 135.310 130.178 134.136 133.208 Total Moisture Liquid collected, g 426.4 425.6 436.6 429.533 Volume of Water Vapor, standard cubic feet 20.07 20.03 20.55 20.217 Moisture Content of Stack Gas, % 12.92 13.33 13.28 13.177 Moisture Saturation at Stack Gas Temperature, % 48.17 47.92 48.19 48.093 Dry Mole Fraction 0.8708 0.8667 0.8672 0.868 Carbon Dioxide, % 14.4 14 13.4 13.933 Oxygen, % 4.5 4.7 4.9 4.700 Carbon Monoxide & Nitrogen, % 81.1 81.3 81.7 81.367 Fuel Factor 1.14 1.16 1.19 Dry Molecular Weight, lb/lb-Mole 30.48 30.43 30.34 30.417 Wet Molecular weight, lb/lb-Mole 28.87 28.77 28.70 28.780 Flue Gas Static Pressure, inches of H2O -0.2 -0.2 -0.2 -0.200 Absolute Flue Gas Pressure, inches of Mercury 23.44 23.36 23.25 23.350 Average Stack Gas Temperature, °F 166.75 166.38 166.42 166.517 Average Velocity Head, inches of H2O 0.2888979032 909480.294392146

9964150.287495291

8963 0.290
Average Stack Gas Velocity, feet/second 37.15 37.62 37.31 37.360 Stack Cross-Sectional Area, square feet 461.863 461.863 461.863 461.863 Dry Volumetric Flow Rate, dry scfm 591,666.9 594,647.1 587,271.1591,195.033 Actual Wet Volumetric Flue Gas Flow Rate, acfm 1,029,492.6 1,042,517.2 1,033,926.51,035,312.1 00 Percent Isokinetic of Sampling Rate, % Percent Excess Air, % 26.6 28.0 29.4 28.000 F-Factor, dscfm/MMBtu @ %O2 9684 9663 9678 9,675.000 Round Duct Diameter, inches 291 291 291 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



### Friday, February 18, 2011 Page 16 of 16