### Name: Chris Welch

Title: Environmental Specialist Company: Colorado Springs Utilities Sign Date: 7/23/2010 Name: Chet Gutwein Title: Engineer Company: Airtech Environmental Services Inc. Sign Date: 7/23/2010 Permitted Facility Representative / Date Testing Company Representative / Date 

## Martin Drake Unit 5 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.

Saturday, January 22, 2011 Page 1 of 15

### Martin Drake Unit 5
7/23/2010 Facility Information:
Martin Drake 700 South Conejos Street

Colorado Springs CO 80903 Contact: Chris Welch Phone: (719) 668-8681 Fax: Email: cwelch@csu.org Testing Company:
Airtech Environmental Services Inc.
5776 Lamar Street

Arvada CO 80002 Contact:Brandon Check Phone: (303) 670-0530 Fax: (303) 670-4130 Email: bcheck@airtechenv.com

Air Permit Number: 492 Permitted Source ID/Name: 5 Permitted Maximum Process Rate: N/A 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: Colorado Springs Utilities Martin Drake Power Plant consists of three coal-fired, steam driven electric generating units designated Units 5, 6 and 7, for the generation of commercial electricity. The Martin Drake Power Plant is located at 700 South Conejos Street, Colorado Springs, Colorado.
Unit 5 is a 51 megawatt (MW) pulverized coal-fired steam electric generating unit with a Westinghouse superheat steam turbine, a Riley Stoker steam generator and a Marsulex reverse air baghouse for the control of particulate emissions. Industry/SCC/NAIS 221112

Sampling Location Information:

Test Parameter Information: AFS #: 0804100004 FRS #: 110009559637

SCC / Description 10100202 External Combustion Boilers - Electric Generation - Bituminous/Subbituminous Coal - Pulverized Coal: Dry Bottom (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 Exit 0 2.5 2.5 6 104.17 24 90 123.63

Target Parameter Test Method Number of

Test Runs Test Run

Duration Sample

Points Comments Location Total PM2.5 OTM - 27/28 3 240 0 Use only for dry stacks. Delete Method 5/OTM28 tests. Stack Exit



### Saturday, January 22, 2011 Page 2 of 15

### Martin Drake Unit 5
7/23/2010

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. The following is a list of the test methods that are to be used for this test program and their respective promulgation dates:
Methods 1 through 29 – August 1997 Method 30B – January 2008 Other Test Methods 27 and 28 – April 2009

Organic Condensible Particulate OTM - 27/28 3 240 0 Use only for dry stacks. Delete Method 5/OTM28 tests. Stack Exit

Inorganic (Aqueous)

Condensible Part. OTM - 27/28 3 240 0 Use only for dry stacks. Delete Method 5/OTM28 tests. Stack Exit

Filterable PM2.5 OTM - 27/28 3 240 0 Use only for dry stacks. Delete Method 5/OTM28 tests. Stack Exit

Selenium Method 29 3 240 0 Stack Exit Arsenic Method 29 3 240 0 Stack Exit Beryllium Method 29 3 240 0 Stack Exit Cadmium Method 29 3 240 0 Stack Exit Chromium Method 29 3 240 0 Stack Exit Lead Method 29 3 240 0 Stack Exit Antimony Method 29 3 240 0 Stack Exit Nickel Method 29 3 240 0 Stack Exit Cobalt Method 29 3 240 0 Stack Exit Filterable Particulate Method 29 3 240 0 Stack Exit Phosphorus (yellow or white) Method 29 3 240 0 Stack Exit Manganese Method 29 3 240 0 Stack Exit



### Saturday, January 22, 2011 Page 3 of 15

### Martin Drake Unit 5
7/23/2010 Sampling / Stack Data Results Summary



### Location Stack Exit - Method 29 Average Run Number 1 2 3
Test Date 4/29/2010 4/30/2010 5/3/2010 Run Start Time 7:59:00 AM 6:31:00 AM 7:26:00 AM

Run Finish Time 1:59:00 PM 12:31:00 PM 1:31:00 PM

Net Run Time, minutes 360 360 360 Dry Gas Meter Volume Sampled, dscf 141.680 143.057 138.242 140.993 Moisture Content of Stack Gas, % 10.88 10.48 9.77 10.377 Moisture Saturation at Stack Gas Temperature, % 100.00 100.00 100.00 100.000 Carbon Dioxide, % 13 12.8 12.8 12.867 Oxygen, % 6 6 6 6.000 Average Stack Gas Temperature, °F 330.46 324.96 326.33 327.250 Dry Volumetric Flow Rate, dry scfm 128,869.9 129,272.9 133,683.2 130,608.667 Actual Wet Volumetric Flue Gas Flow Rate, acfm 292,158.2 288,820.3 289,423.0 290,133.833 Percent Isokinetic of Sampling Rate, % 102.9 103.6 96.8 101.100 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



### Saturday, January 22, 2011 Page 4 of 15

### Martin Drake Unit 5
7/23/2010
Location Stack Exit - 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



### Saturday, January 22, 2011 Page 5 of 15

### Martin Drake Unit 5
7/23/2010 Emissions Summary



### Location: Stack Exit - Method 29 Compound: Antimony Average RunNumber 1 2 3 Mass_mg 0.00047 0.000089 0.000051 0.000 Elb/hr 5.65E-05 1.06E-05 6.52E-06 0.000 lb/mmBtuO2 1.00E-07 1.88E-08 1.12E-08 0.000 mg/dscm 1.17E-04 2.20E-05 1.30E-05 0.000 mg/dscm@7%O2 1.09E-04 2.05E-05 1.21E-05 0.000 

### Compound: Arsenic Average RunNumber 1 2 3 Mass_mg 0.000737 0.000556 0.000993 0.001 Elb/hr 8.87E-05 6.65E-05 1.27E-04 0.000 lb/mmBtuO2 1.57E-07 1.18E-07 2.17E-07 0.000 mg/dscm 1.84E-04 1.37E-04 2.54E-04 0.000 mg/dscm@7%O2 1.72E-04 1.28E-04 2.37E-04 0.000 

### Compound: Beryllium Average RunNumber 1 2 3 Mass_mg 0.00005 0.00005 0.00005 0.000 Elb/hr 6.02E-06 5.98E-06 6.40E-06 0.000 lb/mmBtuO2 1.07E-08 1.06E-08 1.09E-08 0.000 mg/dscm 1.25E-05 1.23E-05 1.28E-05 0.000 mg/dscm@7%O2 1.17E-05 1.15E-05 1.19E-05 0.000 

### Compound: Cadmium Average RunNumber 1 2 3 Mass_mg 0.000583 0.000147 0.000216 0.000 Elb/hr 7.01E-05 1.76E-05 2.76E-05 0.000 lb/mmBtuO2 1.24E-07 3.11E-08 4.73E-08 0.000 mg/dscm 1.45E-04 3.63E-05 5.52E-05 0.000 mg/dscm@7%O2 1.35E-04 3.39E-05 5.15E-05 0.000 

### Compound: Chromium Average RunNumber 1 2 3 Mass_mg 0.00142 0.000685 0.000668 0.001 Elb/hr 1.71E-04 8.19E-05 8.54E-05 0.000 lb/mmBtuO2 3.03E-07 1.45E-07 1.46E-07 0.000 mg/dscm 3.54E-04 1.69E-04 1.71E-04 0.000 mg/dscm@7%O2 3.30E-04 1.58E-04 1.60E-04 0.000 

### Compound: Cobalt Average RunNumber 1 2 3 Mass_mg 0.0002 0.000006 0.0002 0.000 Elb/hr 2.41E-05 7.17E-07 2.56E-05 0.000



### Saturday, January 22, 2011 Page 6 of 15

### Martin Drake Unit 5
7/23/2010
lb/mmBtuO2 4.27E-08 1.27E-09 4.38E-08 0.000 mg/dscm 4.99E-05 1.48E-06 5.11E-05 0.000 mg/dscm@7%O2 4.66E-05 1.38E-06 4.77E-05 0.000 

### Compound: Filterable Particulate Average RunNumber 1 2 3 Mass_mg 2.9 3 0.7 2.200 Elb/hr 3.49E-01 3.59E-01 8.95E-02 0.266 lb/mmBtuO2 6.19E-04 6.34E-04 1.53E-04 0.000 mg/dscm 7.23E-01 7.41E-01 1.79E-01 0.548 mg/dscm@7%O2 6.74E-01 6.91E-01 1.67E-01 0.511 

### Compound: Lead Average RunNumber 1 2 3 Mass_mg 0.0113 0.0017 0.00199 0.005 Elb/hr 1.36E-03 2.03E-04 2.55E-04 0.001 lb/mmBtuO2 2.41E-06 3.59E-07 4.35E-07 0.000 mg/dscm 2.82E-03 4.20E-04 5.08E-04 0.001 mg/dscm@7%O2 2.63E-03 3.92E-04 4.74E-04 0.001 

### Compound: Manganese Average RunNumber 1 2 3 Mass_mg 0.00166 0.000725 0.00114 0.001 Elb/hr 2.00E-04 8.67E-05 1.46E-04 0.000 lb/mmBtuO2 3.54E-07 1.53E-07 2.49E-07 0.000 mg/dscm 4.14E-04 1.79E-04 2.91E-04 0.000 mg/dscm@7%O2 3.86E-04 1.67E-04 2.71E-04 0.000 

### Compound: Nickel Average RunNumber 1 2 3 Mass_mg 0.000364 0.000496 0.00128 0.001 Elb/hr 4.38E-05 5.93E-05 1.64E-04 0.000 lb/mmBtuO2 7.77E-08 1.05E-07 2.80E-07 0.000 mg/dscm 9.07E-05 1.22E-04 3.27E-04 0.000 mg/dscm@7%O2 8.46E-05 1.14E-04 3.05E-04 0.000 

### Compound: Phosphorus (yellow or white) Average RunNumber 1 2 3 Mass_mg 0.279 0.248 0.316 0.281 Elb/hr 3.36E-02 2.96E-02 4.04E-02 0.035 lb/mmBtuO2 5.96E-05 5.24E-05 6.91E-05 0.000 mg/dscm 6.96E-02 6.12E-02 8.07E-02 0.071 mg/dscm@7%O2 6.49E-02 5.71E-02 7.53E-02 0.066 

### Compound: Selenium Average RunNumber 1 2 3 Mass_mg 0.000926 0.0009 0.00123 0.001 Elb/hr 1.11E-04 1.08E-04 1.57E-04 0.000


### Saturday, January 22, 2011 Page 7 of 15

### Martin Drake Unit 5
7/23/2010

Process Run Data lb/mmBtuO2 1.98E-07 1.90E-07 2.69E-07 0.000 mg/dscm 2.31E-04 2.22E-04 3.14E-04 0.000 mg/dscm@7%O2 2.15E-04 2.07E-04 2.93E-04 0.000



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

### Compound: Filterable PM2.5 Average RunNumber 1 2 3 Mass_mg 6.7 7.5 1.7 5.300 lb/mmBtuO2 1.73E-03 1.58E-03 4.13E-04 0.001 

### Compound: Inorganic (Aqueous) Condensible Pa Average RunNumber 1 2 3 Mass_mg 7.6 9.6 7.9 8.367 lb/mmBtuO2 1.96E-03 2.02E-03 1.92E-03 0.002 

### Compound: Organic Condensible Particulate Average RunNumber 1 2 3 Mass_mg 2.8 2.8 2.5 2.700 lb/mmBtuO2 7.22E-04 5.90E-04 6.07E-04 0.001 

### Compound: Total PM2.5 Average RunNumber 1 2 3 Mass_mg 17.1 19.9 12.1 16.367 lb/mmBtuO2 4.41E-03 4.19E-03 2.94E-03 0.004



### Saturday, January 22, 2011 Page 8 of 15

### Martin Drake Unit 5
7/23/2010 Process Run Data



### Run Name Value UOM Comments Target Value 1 Coal Burned 0.0273 1000 Tons/hr Process Data is presented as an average over a 24 hour period. This value may differ slightly from the average value during each test
run. 0.0292

1 Average Heat Input 496.3 MMBtu/hr Process Data is presented as an average over a 24 hour period. This value may differ slightly from the average value during each test
run. 500

1 Steam Output 380.2 1000 lb steam/hr Process Data is presented as an average over a 24 hour period. This value may differ slightly from the average value during each test
run. 390



### 1 Flue Gas Flow Rate 135330 scfm Process Data is presented as an average over a 24 hour period. This value may differ slightly from the average value during each test
run. 140000

1 Flue Gas Carbon Dioxide Content 11.2 % Process Data is presented as an average over a 24 hour period. This value may differ slightly from the average value during each test
run. 11.5

Saturday, January 22, 2011 Page 9 of 15

### Martin Drake Unit 5
7/23/2010 1 Flue Gas Sampling Point Temperature 321.55 Deg F Process Data is presented as an average over a 24 hour period. This value may differ slightly from the average value during each test
run. 320

1 Unit Gross Electrical Output 47 Mwe Process Data is presented as an average over a 24 hour period. This value may differ slightly from the average value during each test
run. 48



### 1 Unit Net Electric Generation 42.53 MWh Process Data is presented as an average over a 24 hour period. This value may differ slightly from the average value during each test
run. 45

4 Coal Burned 0.0274 1000 Tons/hr Process Data is presented as an average over a 24 hour period. This value may differ slightly from the average value during each test
run. 0.0292

4 Average Heat Input 449 MMBtu/hr Process Data is presented as an average over a 24 hour period. This value may differ slightly from the average value during each test
run. 500

Saturday, January 22, 2011 Page 10 of 15

### Martin Drake Unit 5
7/23/2010 4 Steam Output 389.1 1000 lb steam/hr Process Data is presented as an average over a 24 hour period. This value may differ slightly from the average value during each test
run. 390

4 Flue Gas Flow Rate 137827 scfm Process Data is presented as an average over a 24 hour period. This value may differ slightly from the average value during each test
run. 140000



### 4 Flue Gas Carbon Dioxide Content 10 % Process Data is presented as an average over a 24 hour period. This value may differ slightly from the average value during each test
run. 11.5

4 Flue Gas Sampling Point Temperature 316.48 Deg F Process Data is presented as an average over a 24 hour period. This value may differ slightly from the average value during each test
run. 320

4 Unit Gross Electrical Output 48 Mwe Process Data is presented as an average over a 24 hour period. This value may differ slightly from the average value during each test
run. 48

Saturday, January 22, 2011 Page 11 of 15

### Martin Drake Unit 5
7/23/2010 4 Unit Net Electric Generation 43.65 MWh Process Data is presented as an average over a 24 hour period. This value may differ slightly from the average value during each test
run. 45

5 Coal Burned 0.0268 1000 Tons/hr Process Data is presented as an average over a 24 hour period. This value may differ slightly from the average value during each test
run. 0.0292



### 5 Average Heat Input 481.8 MMBtu/hr Process Data is presented as an average over a 24 hour period. This value may differ slightly from the average value during each test
run. 500

5 Steam Output 371.881000 lb steam/hr Process Data is presented as an average over a 24 hour period. This value may differ slightly from the average value during each test
run. 390

5 Flue Gas Flow Rate 133311 scfm Process Data is presented as an average over a 24 hour period. This value may differ slightly from the average value during each test
run. 140000

Saturday, January 22, 2011 Page 12 of 15

### Martin Drake Unit 5
7/23/2010

APCD Run Data

Process Lab Run Data 5 Flue Gas Carbon Dioxide Content 11.1 % Process Data is presented as an average over a 24 hour period. This value may differ slightly from the average value during each test
run. 11.5

5 Flue Gas Sampling Point Temperature 315 Deg F Process Data is presented as an average over a 24 hour period. This value may differ slightly from the average value during each test
run. 320



### 5 Unit Gross Electrical Output 46 Mwe Process Data is presented as an average over a 24 hour period. This value may differ slightly from the average value during each test
run. 48

5 Unit Net Electric Generation 41.82 MWh Process Data is presented as an average over a 24 hour period. This value may differ slightly from the average value during each test
run. 45

Run Name Value UOM Comments Target Value 

### 1 BAGHOUSE 0 0

Saturday, January 22, 2011 Page 13 of 15

### Martin Drake Unit 5
7/23/2010 Sampling / Stack Data Results Detail



### Location Stack Exit - Method 29 Average Run Number 1 2 3 Test Date 4/29/2010 4/30/2010 5/3/2010 Run Start Time 7:59:00 AM 6:31:00 AM 7:26:00 AM Run Finish Time 1:59:00 PM 12:31:00 PM 1:31:00 PM Net Traversing Points 24 24 24 Net Run Time, minutes 360 360 360 Nozzle Diameter, inches 0.205 0.205 0.205 0.205 Pitot Tube Coefficient 0.84 0.84 0.84 0.840 Dry Gas Meter Calibration Factor 0.9888 0.9888 0.9888 0.989 Barometric Pressure, inches of Mercury 23.42 23.49 24.06 23.657 Average Orifice Meter Differential, inches H2O 0.63 0.61 0.63 0.623 Dry Gas Meter Volume Sampled, cubic feet 183.590 181.710 174.790 180.030 Average Dry Gas Meter Temperature, °F 70.60 61.63 71.85 68.027 Dry Gas Meter Volume Sampled, dscf 141.680 143.057 138.242 140.993 Total Moisture Liquid collected, g 367.5 355.7 318 347.067 Volume of Water Vapor, standard cubic feet 17.30 16.74 14.97 16.337 Moisture Content of Stack Gas, % 10.88 10.48 9.77 10.377 Moisture Saturation at Stack Gas Temperature, % 100.00 100.00 100.00 100.000 Dry Mole Fraction 0.8912 0.8952 0.9023 0.896 Carbon Dioxide, % 13 12.8 12.8 12.867 Oxygen, % 6 6 6 6.000 Carbon Monoxide & Nitrogen, % 81 81.2 81.2 81.133 Fuel Factor 1.15 1.16 1.16 Dry Molecular Weight, lb/lb-Mole 30.32 30.29 30.29 30.300 Wet Molecular weight, lb/lb-Mole 28.98 29.00 29.09 29.023 Flue Gas Static Pressure, inches of H2O -17 -17 -17 -17.000 Absolute Flue Gas Pressure, inches of Mercury 22.17 22.24 22.81 22.407 Average Stack Gas Temperature, °F 330.46 324.96 326.33 327.250 Average Velocity Head, inches of H2O 0.6258750391 78444 0.618498206

169307 0.637730370

180438 0.627
Average Stack Gas Velocity, feet/second 63.02 62.30 62.43 62.583 Stack Cross-Sectional Area, square feet 77.266 77.266 77.266 77.266 Dry Volumetric Flow Rate, dry scfm 128,869.9 129,272.9 133,683.2 130,608.667 Actual Wet Volumetric Flue Gas Flow Rate, acfm 292,158.2 288,820.3 289,423.0290,133.833 Percent Isokinetic of Sampling Rate, % 102.9 103.6 96.8 101.100 Percent Excess Air, % 39.0 38.9 38.9 38.933 F-Factor, dscfm/MMBtu @ %O2 9780 9780 9780 9,780.000 Round Duct Diameter, inches 0 0 0 Rectangular Duct Width, inches 90 90 90 Rectangular Duct Length, inches 123.625 123.625 123.625 Fw 10640 10640 10640 10,640.000 Fc 1800 1800 1800 1,800.000



### Saturday, January 22, 2011 Page 14 of 15

### Martin Drake Unit 5
7/23/2010
Location Stack Exit - 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



### Saturday, January 22, 2011 Page 15 of 15