### 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 7 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 14

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

Colorado Springs CO80903 Contact:Chris Welch Phone:(719) 668-8681 Fax: Email: cwelch@csu.org Testing Company:
Airtech Environmental Services Inc. 5776 Lamar Street

Arvada CO80002 Contact:Brandon Check Phone:(303) 670-0530 Fax: (303) 670-4130 Email:bcheck@airtechenv.com

Air Permit Number: 492 Permitted Source ID/Name: 7 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 7 is an 142 MW pulverized coal-fired steam electric generating unit with a General Electric single reheat steam turbine, a Babcock & Wilcox steam generator and a Research-Cottrell reverse air baghouse for the control of particulate emissions. Industry/SCC/NAIS221112

Sampling Location Information:

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

SCC / Description10100202 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 2.3 2.3 4 156 16 156 156

Target Parameter Test Method Number of

Test RunsTest Run

DurationSample

Points Comments LocationTotal 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 14

### Martin Drake Unit 7
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 14

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


### LocationStack Exit - Method 29 Average Run Number 1 2 3 Test Date 4/27/20104/27/2010 4/28/2010 Run Start Time 6:09:00 AM1:59:00 PM7:15:00 AM Run Finish Time 12:09:00 PM7:59:00 PM 1:15:00 PM Net Run Time, minutes 360 360 360 Dry Gas Meter Volume Sampled, dscf 138.248 129.476 127.220 131.648 Moisture Content of Stack Gas, % 8.49 8.41 8.34 8.413 Moisture Saturation at Stack Gas Temperature, % 100.00 100.00 100.00 100.000 Carbon Dioxide, % 12 12 11.8 11.933 Oxygen, % 7 6.8 7 6.933 Average Stack Gas Temperature, °F 273.04 277.88 277.29 276.070 Dry Volumetric Flow Rate, dry scfm 305,074.0 326,351.5 307,557.6312,994.367 Actual Wet Volumetric Flue Gas Flow Rate, acfm 584,064.0 628,375.8 591,263.4601,234.400 Percent Isokinetic of Sampling Rate, % 108.0 94.6 101.8 101.467 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



### LocationStack Exit - OTM - 27/28 Average Run Number 1 2 3 Test Date 4/27/20104/27/2010 4/28/2010 Run Start Time 6:05:00 AM2:01:00 PM7:12:00 AM Run Finish Time 12:35:00 PM8:31:00 PM 1:42:00 PM Net Run Time, minutes 390 390 390 Dry Gas Meter Volume Sampled, dscf 135.701 122.720 129.600 129.340 Moisture Content of Stack Gas, % 9.24 10.31 6.86 8.803 Moisture Saturation at Stack Gas Temperature, % 100.00 100.00 100.00 100.000 Carbon Dioxide, % 11.8 12 12 11.933 Oxygen, % 6.7 6.8 7 6.833 Average Stack Gas Temperature, °F 273.25 277.83 278.50 276.527 Dry Volumetric Flow Rate, dry scfm 324,805.9 329,866.3 335,180.9329,951.033 Actual Wet Volumetric Flue Gas Flow Rate, acfm 627,159.0 648,554.4 635,169.6636,961.000 Percent Isokinetic of Sampling Rate, % 97.0 86.4 103.8 95.733 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 14

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

Saturday, January 22, 2011 Page 5 of 14

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


### Location: Stack Exit - Method 29 Compound: Antimony Average RunNumber 1 2 3 Mass_mg 0.000163 0.00011 0.000101 0.000 Elb/hr 4.76E-05 3.67E-05 3.23E-05 0.000 lb/mmBtuO2 3.82E-08 2.72E-08 2.57E-08 0.000 mg/dscm 4.16E-05 3.00E-05 2.80E-05 0.000 mg/dscm@7%O2 4.16E-05 2.96E-05 2.80E-05 0.000 

### Compound: Arsenic Average RunNumber 1 2 3 Mass_mg 0.00143 0.00103 0.00202 0.001 Elb/hr 4.17E-04 3.43E-04 6.46E-04 0.000 lb/mmBtuO2 3.35E-07 2.54E-07 5.15E-07 0.000 mg/dscm 3.65E-04 2.81E-04 5.61E-04 0.000 mg/dscm@7%O2 3.65E-04 2.77E-04 5.61E-04 0.000 

### Compound: Beryllium Average RunNumber 1 2 3 Mass_mg 0.000089 0.000048 0.000079 0.000 Elb/hr 2.60E-05 1.60E-05 2.53E-05 0.000 lb/mmBtuO2 2.09E-08 1.18E-08 2.01E-08 0.000 mg/dscm 2.27E-05 1.31E-05 2.19E-05 0.000 mg/dscm@7%O2 2.27E-05 1.29E-05 2.19E-05 0.000 

### Compound: Cadmium Average RunNumber 1 2 3 Mass_mg 0.000392 0.000969 0.00138 0.001 Elb/hr 1.14E-04 3.23E-04 4.41E-04 0.000 lb/mmBtuO2 9.19E-08 2.39E-07 3.52E-07 0.000 mg/dscm 1.00E-04 2.64E-04 3.83E-04 0.000 mg/dscm@7%O2 1.00E-04 2.60E-04 3.83E-04 0.000 

### Compound: Chromium Average RunNumber 1 2 3 Mass_mg 0.00394 0.0022 0.0031 0.003 Elb/hr 1.15E-03 7.34E-04 9.91E-04 0.001 lb/mmBtuO2 9.24E-07 5.43E-07 7.90E-07 0.000 mg/dscm 1.01E-03 6.00E-04 8.61E-04 0.001 mg/dscm@7%O2 1.01E-03 5.91E-04 8.61E-04 0.001 

### Compound: Cobalt Average RunNumber 1 2 3 Mass_mg 0.000261 0.000148 0.000257 0.000 Elb/hr 7.62E-05 4.93E-05 8.22E-05 0.000



### Saturday, January 22, 2011 Page 6 of 14

### Martin Drake Unit 7
7/23/2010 lb/mmBtuO2 6.12E-08 3.65E-08 6.55E-08 0.000 mg/dscm 6.67E-05 4.04E-05 7.14E-05 0.000 mg/dscm@7%O2 6.67E-05 3.98E-05 7.14E-05 0.000 

### Compound:Filterable Particulate Average RunNumber 1 2 3 Mass_mg 18.8 11.4 19.8 16.667 Elb/hr 5.49E+00 3.80E+00 6.33E+00 5.207 lb/mmBtuO2 4.41E-03 2.81E-03 5.05E-03 0.004 mg/dscm 4.80E+00 3.11E+00 5.50E+00 4.470 mg/dscm@7%O2 4.80E+00 3.07E+00 5.50E+00 4.457 

### Compound:Lead Average RunNumber 1 2 3 Mass_mg 0.00111 0.0146 0.0186 0.011 Elb/hr 3.24E-04 4.87E-03 5.95E-03 0.004 lb/mmBtuO2 2.60E-07 3.60E-06 4.74E-06 0.000 mg/dscm 2.84E-04 3.98E-03 5.16E-03 0.003 mg/dscm@7%O2 2.84E-04 3.92E-03 5.16E-03 0.003 

### Compound:Manganese Average RunNumber 1 2 3 Mass_mg 0.00333 0.00192 0.00275 0.003 Elb/hr 9.72E-04 6.40E-04 8.79E-04 0.001 lb/mmBtuO2 7.81E-07 4.74E-07 7.01E-07 0.000 mg/dscm 8.51E-04 5.24E-04 7.63E-04 0.001 mg/dscm@7%O2 8.51E-04 5.17E-04 7.63E-04 0.001 

### Compound:Nickel Average RunNumber 1 2 3 Mass_mg 0.00212 0.00067 0.00123 0.001 Elb/hr 6.19E-04 2.23E-04 3.93E-04 0.000 lb/mmBtuO2 4.97E-07 1.65E-07 3.13E-07 0.000 mg/dscm 5.42E-04 1.83E-04 3.41E-04 0.000 mg/dscm@7%O2 5.42E-04 1.80E-04 3.41E-04 0.000 

### Compound: Phosphorus (yellow or white) Average RunNumber 1 2 3 Mass_mg 0.339 0.312 0.445 0.365 Elb/hr 9.90E-02 1.04E-01 1.42E-01 0.115 lb/mmBtuO2 7.95E-05 7.70E-05 1.13E-04 0.000 mg/dscm 8.66E-02 8.51E-02 1.24E-01 0.099 mg/dscm@7%O2 8.66E-02 8.39E-02 1.24E-01 0.098 

### Compound: Selenium Average RunNumber 1 2 3 Mass_mg 0.00381 0.00426 0.00397 0.004 Elb/hr 1.11E-03 1.42E-03 1.27E-03 0.001


### Saturday, January 22, 2011 Page 7 of 14

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

Process Run Data lb/mmBtuO2 8.93E-07 1.05E-06 1.01E-06 0.000 mg/dscm 9.73E-04 1.16E-03 1.10E-03 0.001 mg/dscm@7%O2 9.73E-04 1.14E-03 1.10E-03 0.001



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

### Compound:Filterable PM2.5 Average RunNumber 1 2 3 Mass_mg 7.7 4.3 1.8 4.600 lb/mmBtuO2 1.80E-03 1.12E-03 4.50E-04 0.001 

### Compound: Inorganic (Aqueous) Condensible Pa Average RunNumber 1 2 3 Mass_mg 16.5 8.2 5.5 10.067 lb/mmBtuO2 3.86E-03 2.14E-03 1.38E-03 0.002 

### Compound: Organic Condensible Particulate Average RunNumber 1 2 3 Mass_mg 4.8 2.8 3.9 3.833 lb/mmBtuO2 1.12E-03 7.29E-04 9.76E-04 0.001 

### Compound: Total PM2.5 Average RunNumber 1 2 3 Mass_mg 29 15.3 11.2 18.500 lb/mmBtuO2 6.78E-03 3.98E-03 2.80E-03 0.005



### Saturday, January 22, 2011 Page 8 of 14

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



### Run Name Value UOM Comments Target Value 1 Coal Burned 0.05491000 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. 0.0625

1 Average Heat Input 1313.9MMBtu/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. 1200

1 Steam Output 875.891000 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. 800



### 1 Flue Gas Flow Rate 315348 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. 250000

1 Flue Gas Carbon Dioxide Content 12.5 % 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. 12

Saturday, January 22, 2011 Page 9 of 14

### Martin Drake Unit 7
7/23/2010 1 Flue Gas Sampling Point Temperature 264.44 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. 260

1 Unit Gross Electrical Output 128 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. 130



### 1 Unit Net Electric Generation 124.16 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. 120

2 Coal Burned 0.06041000 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. 0.0625

2 Average Heat Input 1269.3MMBtu/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. 1200

Saturday, January 22, 2011 Page 10 of 14

### Martin Drake Unit 7
7/23/2010 2 Steam Output 818.381000 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. 800

2 Flue Gas Flow Rate 304086 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. 250000



### 2 Flue Gas Carbon Dioxide Content 12.5 % 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. 12

2 Flue Gas Sampling Point Temperature 267.17 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. 260

2 Unit Gross Electrical Output 123 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. 130

Saturday, January 22, 2011 Page 11 of 14

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

APCD Run Data

Process Lab Run Data 2 Unit Net Electric Generation 119.71 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. 120

Run Name Value UOM Comments Target Value 

### 1 BAGHOUSE 0 0

Saturday, January 22, 2011 Page 12 of 14

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


### LocationStack Exit - Method 29 Average Run Number 1 2 3 Test Date 4/27/2010 4/27/2010 4/28/2010 Run Start Time 6:09:00 AM1:59:00 PM7:15:00 AM Run Finish Time 12:09:00 PM7:59:00 PM 1:15:00 PM Net Traversing Points 24 24 24 Net Run Time, minutes 360 360 360 Nozzle Diameter, inches 0.19 0.19 0.187 0.189 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 24 24 24 24.000 Average Orifice Meter Differential, inches H2O 0.61 0.63 0.56 0.600 Dry Gas Meter Volume Sampled, cubic feet 170.440 163.500 161.220 165.053 Average Dry Gas Meter Temperature, °F 65.48 78.27 80.06 74.603 Dry Gas Meter Volume Sampled, dscf 138.248 129.476 127.220 131.648 Total Moisture Liquid collected, g 272.3 252.6 246 256.967 Volume of Water Vapor, standard cubic feet 12.82 11.89 11.58 12.097 Moisture Content of Stack Gas, % 8.49 8.41 8.34 8.413 Moisture Saturation at Stack Gas Temperature, % 100.00 100.00 100.00 100.000 Dry Mole Fraction 0.9151 0.9159 0.9166 0.916 Carbon Dioxide, % 12 12 11.8 11.933 Oxygen, % 7 6.8 7 6.933 Carbon Monoxide & Nitrogen, % 81 81.2 81.2 81.133 Fuel Factor 1.16 1.18 1.18 Dry Molecular Weight, lb/lb-Mole 30.20 30.19 30.17 30.187 Wet Molecular weight, lb/lb-Mole 29.16 29.16 29.16 29.160 Flue Gas Static Pressure, inches of H2O -4 -4 -4 -4.000 Absolute Flue Gas Pressure, inches of Mercury 23.71 23.71 23.71 23.710 Average Stack Gas Temperature, °F 273.04 277.88 277.29 276.070 Average Velocity Head, inches of H2O 0.6068998302 660470.697763636

5577460.618320195

24111 0.641
Average Stack Gas Velocity, feet/second 57.60 61.97 58.31 59.293 Stack Cross-Sectional Area, square feet 169.000 169.000 169.000 169.000 Dry Volumetric Flow Rate, dry scfm 305,074.0 326,351.5 307,557.6312,994.367 Actual Wet Volumetric Flue Gas Flow Rate, acfm 584,064.0 628,375.8 591,263.4601,234.400 Percent Isokinetic of Sampling Rate, % 108.0 94.6 101.8 101.467 Percent Excess Air, % 48.7 46.5 48.5 47.900 F-Factor, dscfm/MMBtu @ %O2 9780 9780 97809,780.000 Round Duct Diameter, inches 0 0 0 Rectangular Duct Width, inches 156 156 156 Rectangular Duct Length, inches 156 156 156 Fw 10640 10640 1064010,640.000 Fc 1800 1800 18001,800.000



### Saturday, January 22, 2011 Page 13 of 14

### Martin Drake Unit 7
7/23/2010
LocationStack Exit - OTM - 27/28 Average Run Number 1 2 3 Test Date 4/27/2010 4/27/2010 4/28/2010 Run Start Time 6:05:00 AM2:01:00 PM7:12:00 AM Run Finish Time 12:35:00 PM8:31:00 PM 1:42:00 PM Net Traversing Points 12 12 12 Net Run Time, minutes 390 390 390 Nozzle Diameter, inches 0.185 0.185 0.172 0.181 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 24 24 24 24.000 Average Orifice Meter Differential, inches H2O 0.40 0.40 0.40 0.400 Dry Gas Meter Volume Sampled, cubic feet 167.120 154.540 164.500 162.053 Average Dry Gas Meter Temperature, °F 63.17 74.96 79.21 72.447 Dry Gas Meter Volume Sampled, dscf 135.701 122.720 129.600 129.340 Total Moisture Liquid collected, g 293.5 299.5 202.9 265.300 Volume of Water Vapor, standard cubic feet 13.82 14.10 9.55 12.490 Moisture Content of Stack Gas, % 9.24 10.31 6.86 8.803 Moisture Saturation at Stack Gas Temperature, % 100.00 100.00 100.00 100.000 Dry Mole Fraction 0.9076 0.8969 0.9314 0.912 Carbon Dioxide, % 11.8 12 12 11.933 Oxygen, % 6.7 6.8 7 6.833 Carbon Monoxide & Nitrogen, % 81.5 81.2 81 81.233 Fuel Factor 1.20 1.18 1.16 Dry Molecular Weight, lb/lb-Mole 30.16 30.19 30.20 30.183 Wet Molecular weight, lb/lb-Mole 29.04 28.93 29.36 29.110 Flue Gas Static Pressure, inches of H2O -4 -4 -4 -4.000 Absolute Flue Gas Pressure, inches of Mercury 23.71 23.71 23.71 23.710 Average Stack Gas Temperature, °F 273.25 277.83 278.50 276.527 Average Velocity Head, inches of H2O 0.6965012934 400390.737408430

5617590.717332659

887949 0.717
Average Stack Gas Velocity, feet/second 61.85 63.96 62.64 62.817 Stack Cross-Sectional Area, square feet 169.000 169.000 169.000 169.000 Dry Volumetric Flow Rate, dry scfm 324,805.9 329,866.3 335,180.9329,951.033 Actual Wet Volumetric Flue Gas Flow Rate, acfm 627,159.0 648,554.4 635,169.6636,961.000 Percent Isokinetic of Sampling Rate, % 97.0 86.4 103.8 95.733 Percent Excess Air, % 45.2 46.5 48.7 46.800 F-Factor, dscfm/MMBtu @ %O2 9780 9780 97809,780.000 Round Duct Diameter, inches 0 0 0 Rectangular Duct Width, inches 156 156 156 Rectangular Duct Length, inches 156 156 156 Fw 10640 10640 1064010,640.000 Fc 1800 1800 18001,800.000



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