### Name:

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

## Craig Generating Station Unit 2 Stack

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.

Tuesday, February 22, 2011 Page 1 of 24

### Craig Generating Station Unit 2 Stack

Facility Information: Craig Station Unit 2

Craig CO 81626 Contact: Kerry Pabst
Phone: 303-452-6111
Fax: 303-254-6013
Email: kpabst@tristategt.org Testing Company: Platt Environmental Services, Inc. 1520 Kensington Road
Suite 204
Oak Brook IL 60523 Contact: Eric Ehlers
Phone: 630-699-7690
Fax: 630-521-9494
Email: eehlers@plattenv.com

Air Permit Number: 6021 Permitted Source ID/Name: C2 C2
Permitted Maximum Process Rate: Max. Normal Operation Process Rate: Target Process Test Rate >90%

Description of the source (including control equipment). Please see the attachments for source or process flow diagram: Subbituminous fueled, wall fired boiler, low Nox burners, overfire air, baghouse, wet FGD Industry/SCC/NAIS 221112

Sampling Location Information:

Test Parameter Information: AFS #: 0808100018 FRS #: 110000468020

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 336 0 0 4 0 24 0 0

Target Parameter Test Method Number of

Test Runs Test Run

Duration Sample

Points Comments Location Mercury M30B 3 120 0 Stack 2,3,7,8-TCDD Method 23 3 480 0 Stack 1,2,3,7,8-PeCDD Method 23 3 480 0 Stack 1,2,3,4,7,8-HxCDD Method 23 3 480 0 Stack 1,2,3,6,7,8-HxCDD Method 23 3 480 0 Stack 1,2,3,7,8,9-HxCDD Method 23 3 480 0 Stack 1,2,3,4,6,7,8-HpCDD Method 23 3 480 0 Stack



### Tuesday, February 22, 2011 Page 2 of 24

### Craig Generating Station Unit 2 Stack

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.

OCDD Method 23 3 480 0 Stack 2,3,7,8-TCDF Method 23 3 480 0 Stack 1,2,3,7,8-PeCDF Method 23 3 480 0 Stack 2,3,4,7,8-PeCDF Method 23 3 480 0 Stack 1,2,3,4,7,8-HxCDF Method 23 3 480 0 Stack 1,2,3,6,7,8-HxCDF Method 23 3 480 0 Stack 2,3,4,6,7,8-HxCDF Method 23 3 480 0 Stack 1,2,3,7,8,9-HxCDF Method 23 3 480 0 Stack 1,2,3,4,6,7,8-HpCDF Method 23 3 480 0 Stack 1,2,3,4,7,8,9-HpCDF Method 23 3 480 0 Stack OCDF Method 23 3 480 0 Stack Other TCDD Method 23 3 480 0 Stack Other PeCDD Method 23 3 480 0 Stack Other HxCDD Method 23 3 480 0 Stack Other HpCDD Method 23 3 480 0 Stack Other TCDF Method 23 3 480 0 Stack Other PeCDF Method 23 3 480 0 Stack Other HxCDF Method 23 3 480 0 Stack Other HpCDF Method 23 3 480 0 Stack 3,3',4,4'-TCB (PCB77) Method 23 3 480 0 Stack 3,4,4',5-TCB (PCB81) Method 23 3 480 0 Stack 2,3,3',4,4'-PeCB (PCB105) Method 23 3 480 0 Stack 2,3,4,4',5-PeCB (PCB114) Method 23 3 480 0 Stack 2,3',4,4',5-PeCB (PCB118) Method 23 3 480 0 Stack 2',3,4,4',5-PeCB (PCB123) Method 23 3 480 0 Stack 3,3',4,4',5-PeCB (PCB126) Method 23 3 480 0 Stack 2,3,3',4,4',5/2,3,3',4,4',5'-

HxCB (PCBs156/157) Method 23 3 480 0 Stack

2,3',4,4',5,5'-HxCB (PCB167) Method 23 3 480 0 Stack 3,3',4,4',5,5'-HxCB (PCB169) Method 23 3 480 0 Stack 2,3,3',4,4',5,5'-HpCB

(PCB189) Method 23 3 480 0 Stack

Arsenic Method 29 3 240 0 Stack Selenium Method 29 3 240 0 Stack Nickel Method 29 3 240 0 Stack Manganese Method 29 3 240 0 Stack Antimony Method 29 3 240 0 Stack Cobalt Method 29 3 240 0 Stack Chromium Method 29 3 240 0 Stack Beryllium Method 29 3 240 0 Stack Cadmium Method 29 3 240 0 Stack Lead Method 29 3 240 0 Stack Co2 Method 3A CO2 6 240 0 Stack O2 Method 3A O2 6 240 0 Stack Inorganic (Aqueous)

Condensible Part. Method 5/OTM-28 3 240 0 Stack

Filterable Particulate Method 5/OTM-28 3 240 0 Stack Total Particulate Method 5/OTM-28 3 240 0 Stack Organic Condensible

Particulate Method 5/OTM-28 3 240 0 Stack



### Tuesday, February 22, 2011 Page 3 of 24

### Craig Generating Station Unit 2 Stack

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.



### Tuesday, February 22, 2011 Page 4 of 24

### Craig Generating Station Unit 2 Stack

Sampling / Stack Data Results Summary



### Location Stack - Method 23 Average
Run Number M23-1 M23-2 M23-3
Test Date 5/4/2010 5/5/2010 5/7/2010
Run Start Time 7:20:00 AM 6:45:00 AM 12:27:00 PM

Run Finish Time 4:01:00 PM 3:24:00 PM 9:15:00 PM Net Run Time, minutes 480 480 480 Dry Gas Meter Volume Sampled, dscf 358.027 302.196 308.630 322.951 Moisture Content of Stack Gas, % 11.44 12.20 12.02 11.887 Moisture Saturation at Stack Gas Temperature, % 13.64 13.63 13.95 13.740 Carbon Dioxide, % 11.8 12.2 12 12.000 Oxygen, % 7.3 7 6.9 7.067 Average Stack Gas Temperature, °F 118.00 118.00 118.00 118.000 Dry Volumetric Flow Rate, dry scfm 1,087,815.5 1,068,505.2 1,047,193.3 1,067,838.00 0 Actual Wet Volumetric Flue Gas Flow Rate, acfm 1,686,175.3 1,669,180.5 1,671,027.8 1,675,461.20 0 Percent Isokinetic of Sampling Rate, % 98.7 104.7 109.2 104.200 F-Factor, dscfm/MMBtu @ %O2 10157 9946 9695 9,932.667
Fw 0 0 0 0.000
Fc 0 0 0 0.000



### Tuesday, February 22, 2011 Page 5 of 24

### Craig Generating Station Unit 2 Stack

Location Stack - Method 29 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



### Location Stack - Method 3A CO2 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



### Tuesday, February 22, 2011 Page 6 of 24

### Craig Generating Station Unit 2 Stack

Location Stack - Method 3A CO2 3 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 - Method 3A O2 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



### Tuesday, February 22, 2011 Page 7 of 24

### Craig Generating Station Unit 2 Stack

Location Stack - Method 3A O2 3 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 - Method 5/OTM-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



### Tuesday, February 22, 2011 Page 8 of 24

### Craig Generating Station Unit 2 Stack

Emissions Summary



### Location: Stack - Method 23 Compound: 1,2,3,4,6,7,8-HpCDD Average RunNumber M23-1 M23-2 M23-3 Mass_mg 0.0000000033 0.0000000028 0.0000000067 0.000 lb/mmBtuO2 3.17E-13 3.05E-13 6.93E-13 0.000 ng/dscm 3.26E-04 3.27E-04 7.67E-04 0.000 ng/dscm@7%O2 3.33E-04 3.27E-04 7.62E-04 0.000


### Compound: 1,2,3,4,6,7,8-HpCDF Average RunNumber M23-1 M23-2 M23-3 Mass_mg 0.0000000046 0.0000000024 0.0000000069 0.000 lb/mmBtuO2 4.42E-13 2.62E-13 7.13E-13 0.000 ng/dscm 4.54E-04 2.81E-04 7.90E-04 0.001 ng/dscm@7%O2 4.64E-04 2.81E-04 7.84E-04 0.001


### Compound: 1,2,3,4,7,8,9-HpCDF Average RunNumber M23-1 M23-2 M23-3 Mass_mg 0.0000000021 0.0000000023 0.0000000019 0.000 lb/mmBtuO2 2.02E-13 2.51E-13 1.96E-13 0.000 ng/dscm 2.07E-04 2.69E-04 2.17E-04 0.000 ng/dscm@7%O2 2.12E-04 2.69E-04 2.15E-04 0.000


### Compound: 1,2,3,4,7,8-HxCDD Average RunNumber M23-1 M23-2 M23-3 Mass_mg 0.0000000023 0.000000002 0.0000000023 0.000 lb/mmBtuO2 2.21E-13 2.18E-13 2.38E-13 0.000 ng/dscm 2.27E-04 2.34E-04 2.63E-04 0.000 ng/dscm@7%O2 2.32E-04 2.34E-04 2.61E-04 0.000


### Compound: 1,2,3,4,7,8-HxCDF Average RunNumber M23-1 M23-2 M23-3 Mass_mg 0.0000000027 0.0000000018 0.0000000047 0.000 lb/mmBtuO2 2.60E-13 1.96E-13 4.86E-13 0.000 ng/dscm 2.66E-04 2.10E-04 5.38E-04 0.000 ng/dscm@7%O2 2.72E-04 2.10E-04 5.34E-04 0.000


### Compound: 1,2,3,6,7,8-HxCDD Average RunNumber M23-1 M23-2 M23-3 Mass_mg 0.0000000023 0.0000000019 0.0000000023 0.000 lb/mmBtuO2 2.21E-13 2.07E-13 2.38E-13 0.000 ng/dscm 2.27E-04 2.22E-04 2.63E-04 0.000 ng/dscm@7%O2 2.32E-04 2.22E-04 2.61E-04 0.000


### Compound: 1,2,3,6,7,8-HxCDF Average



### Tuesday, February 22, 2011 Page 9 of 24

### Craig Generating Station Unit 2 Stack

RunNumber M23-1 M23-2 M23-3 Mass_mg 0.0000000019 0.0000000017 0.0000000022 0.000 lb/mmBtuO2 1.83E-13 1.85E-13 2.27E-13 0.000 ng/dscm 1.87E-04 1.99E-04 2.52E-04 0.000 ng/dscm@7%O2 1.91E-04 1.99E-04 2.50E-04 0.000


### Compound: 1,2,3,7,8,9-HxCDD Average RunNumber M23-1 M23-2 M23-3 Mass_mg 0.0000000022 0.0000000018 0.0000000022 0.000 lb/mmBtuO2 2.11E-13 1.96E-13 2.27E-13 0.000 ng/dscm 2.17E-04 2.10E-04 2.52E-04 0.000 ng/dscm@7%O2 2.22E-04 2.10E-04 2.50E-04 0.000


### Compound: 1,2,3,7,8,9-HxCDF Average RunNumber M23-1 M23-2 M23-3 Mass_mg 0.0000000025 0.0000000022 0.0000000023 0.000 lb/mmBtuO2 2.40E-13 2.40E-13 2.38E-13 0.000 ng/dscm 2.47E-04 2.57E-04 2.63E-04 0.000 ng/dscm@7%O2 2.52E-04 2.57E-04 2.61E-04 0.000


### Compound: 1,2,3,7,8-PeCDD Average RunNumber M23-2 M23-3 M23-1 Mass_mg 0.0000000025 0.0000000028 0.000000002 0.000 lb/mmBtuO2 2.73E-13 2.89E-13 1.92E-13 0.000 ng/dscm 2.92E-04 3.20E-04 1.97E-04 0.000 ng/dscm@7%O2 2.92E-04 3.18E-04 2.01E-04 0.000


### Compound: 1,2,3,7,8-PeCDF Average RunNumber M23-2 M23-3 M23-1 Mass_mg 0.000000002 0.000000002 0.0000000023 0.000 lb/mmBtuO2 2.18E-13 2.07E-13 2.21E-13 0.000 ng/dscm 2.34E-04 2.29E-04 2.27E-04 0.000 ng/dscm@7%O2 2.34E-04 2.27E-04 2.32E-04 0.000


### Compound: 2,3,3',4,4',5,5'-HpCB (PCB189) Average RunNumber M23-2 M23-3 M23-1 Mass_mg 0.000000007 0.0000000054 0.0000000068 0.000 lb/mmBtuO2 7.64E-13 5.58E-13 6.54E-13 0.000 ng/dscm 8.18E-04 6.18E-04 6.71E-04 0.001 ng/dscm@7%O2 8.18E-04 6.14E-04 6.86E-04 0.001


### Compound: 2,3,3',4,4',5/2,3,3',4,4',5'-HxCB (PC Average RunNumber M23-2 M23-3 M23-1 Mass_mg 0.000000014 0.0000000092 0.000000017 0.000 lb/mmBtuO2 1.53E-12 9.51E-13 1.63E-12 0.000 ng/dscm 1.64E-03 1.05E-03 1.68E-03 0.001 ng/dscm@7%O2 1.64E-03 1.04E-03 1.72E-03 0.001



### Tuesday, February 22, 2011 Page 10 of 24

### Craig Generating Station Unit 2 Stack

Compound: 2,3,3',4,4'-PeCB (PCB105) Average RunNumber M23-2 M23-3 M23-1 Mass_mg 0.000000053 0.000000034 0.00000014 0.000 lb/mmBtuO2 5.78E-12 3.52E-12 1.35E-11 0.000 ng/dscm 6.19E-03 3.89E-03 1.38E-02 0.008 ng/dscm@7%O2 6.19E-03 3.86E-03 1.41E-02 0.008


### Compound: 2,3',4,4',5,5'-HxCB (PCB167) Average RunNumber M23-2 M23-3 M23-1 Mass_mg 0.0000000061 0.0000000037 0.0000000074 0.000 lb/mmBtuO2 6.66E-13 3.83E-13 7.11E-13 0.000 ng/dscm 7.13E-04 4.23E-04 7.30E-04 0.001 ng/dscm@7%O2 7.13E-04 4.20E-04 7.46E-04 0.001


### Compound: 2,3,4,4',5-PeCB (PCB114) Average RunNumber M23-2 M23-3 M23-1 Mass_mg 0.0000000052 0.0000000063 0.000000013 0.000 lb/mmBtuO2 5.67E-13 6.51E-13 1.25E-12 0.000 ng/dscm 6.08E-04 7.21E-04 1.28E-03 0.001 ng/dscm@7%O2 6.08E-04 7.16E-04 1.31E-03 0.001


### Compound: 2,3',4,4',5-PeCB (PCB118) Average RunNumber M23-2 M23-3 M23-1 Mass_mg 0.00000014 0.0000001 0.00000037 0.000 lb/mmBtuO2 1.53E-11 1.03E-11 3.56E-11 0.000 ng/dscm 1.64E-02 1.14E-02 3.65E-02 0.021 ng/dscm@7%O2 1.64E-02 1.13E-02 3.73E-02 0.022


### Compound: 2',3,4,4',5-PeCB (PCB123) Average RunNumber M23-2 M23-3 M23-1 Mass_mg 0.0000000054 0.0000000065 0.0000000066 0.000 lb/mmBtuO2 5.89E-13 6.72E-13 6.34E-13 0.000 ng/dscm 6.31E-04 7.44E-04 6.51E-04 0.001 ng/dscm@7%O2 6.31E-04 7.39E-04 6.65E-04 0.001


### Compound: 2,3,4,6,7,8-HxCDF Average RunNumber M23-1 M23-2 M23-3 Mass_mg 0.0000000023 0.000000002 0.0000000036 0.000 lb/mmBtuO2 2.21E-13 2.18E-13 3.72E-13 0.000 ng/dscm 2.27E-04 2.34E-04 4.12E-04 0.000 ng/dscm@7%O2 2.32E-04 2.34E-04 4.09E-04 0.000


### Compound: 2,3,4,7,8-PeCDF Average RunNumber M23-2 M23-3 M23-1 Mass_mg 0.0000000029 0.0000000041 0.0000000039 0.000 lb/mmBtuO2 3.16E-13 4.24E-13 3.75E-13 0.000



### Tuesday, February 22, 2011 Page 11 of 24

### Craig Generating Station Unit 2 Stack

ng/dscm 3.39E-04 4.69E-04 3.85E-04 0.000 ng/dscm@7%O2 3.39E-04 4.66E-04 3.93E-04 0.000


### Compound: 2,3,7,8-TCDD Average RunNumber M23-2 M23-3 M23-1 Mass_mg 0.0000000023 0.0000000025 0.000000002 0.000 lb/mmBtuO2 2.51E-13 2.58E-13 1.92E-13 0.000 ng/dscm 2.69E-04 2.86E-04 1.97E-04 0.000 ng/dscm@7%O2 2.69E-04 2.84E-04 2.01E-04 0.000


### Compound: 2,3,7,8-TCDF Average RunNumber M23-1 M23-2 M23-3 Mass_mg 0.0000000095 0.0000000048 0.0000000068 0.000 lb/mmBtuO2 9.13E-13 5.24E-13 7.03E-13 0.000 ng/dscm 9.37E-04 5.61E-04 7.78E-04 0.001 ng/dscm@7%O2 9.58E-04 5.61E-04 7.72E-04 0.001


### Compound: 3,3',4,4',5,5'-HxCB (PCB169) Average RunNumber M23-2 M23-3 M23-1 Mass_mg 0.0000000047 0.0000000038 0.0000000077 0.000 lb/mmBtuO2 5.13E-13 3.93E-13 7.40E-13 0.000 ng/dscm 5.49E-04 4.35E-04 7.60E-04 0.001 ng/dscm@7%O2 5.49E-04 4.32E-04 7.77E-04 0.001


### Compound: 3,3',4,4',5-PeCB (PCB126) Average RunNumber M23-2 M23-3 M23-1 Mass_mg 0.0000000053 0.0000000064 0.0000000053 0.000 lb/mmBtuO2 5.78E-13 6.62E-13 5.09E-13 0.000 ng/dscm 6.19E-04 7.32E-04 5.23E-04 0.001 ng/dscm@7%O2 6.19E-04 7.27E-04 5.35E-04 0.001


### Compound: 3,3',4,4'-TCB (PCB77) Average RunNumber M23-2 M23-3 M23-1 Mass_mg 0.000000015 0.000000047 0.000000093 0.000 lb/mmBtuO2 1.64E-12 4.86E-12 8.94E-12 0.000 ng/dscm 1.75E-03 5.38E-03 9.17E-03 0.005 ng/dscm@7%O2 1.75E-03 5.34E-03 9.37E-03 0.005


### Compound: 3,4,4',5-TCB (PCB81) Average RunNumber M23-2 M23-3 M23-1 Mass_mg 0.0000000065 0.0000000066 0.0000000078 0.000 lb/mmBtuO2 7.09E-13 6.82E-13 7.50E-13 0.000 ng/dscm 7.60E-04 7.55E-04 7.69E-04 0.001 ng/dscm@7%O2 7.60E-04 7.50E-04 7.86E-04 0.001


### Compound: OCDD Average RunNumber M23-1 M23-3 M23-2



### Tuesday, February 22, 2011 Page 12 of 24

### Craig Generating Station Unit 2 Stack

Mass_mg 0.0000000163 0.0000000195 0.0000000175 0.000 lb/mmBtuO2 1.57E-12 2.02E-12 1.91E-12 0.000 ng/dscm 1.61E-03 2.23E-03 2.05E-03 0.002 ng/dscm@7%O2 1.65E-03 2.21E-03 2.05E-03 0.002


### Compound: OCDF Average RunNumber M23-1 M23-2 M23-3 Mass_mg 0.0000000045 0.000000005 0.000000007 0.000 lb/mmBtuO2 4.33E-13 5.46E-13 7.24E-13 0.000 ng/dscm 4.44E-04 5.84E-04 8.01E-04 0.001 ng/dscm@7%O2 4.54E-04 5.84E-04 7.95E-04 0.001


### Compound: Other HpCDD Average RunNumber M23-2 M23-3 M23-1 Mass_mg 0.0000000023 0.0000000059 0.0000000022 0.000 lb/mmBtuO2 2.51E-13 6.10E-13 2.11E-13 0.000 ng/dscm 2.69E-04 6.75E-04 2.17E-04 0.000 ng/dscm@7%O2 2.69E-04 6.70E-04 2.22E-04 0.000


### Compound: Other HpCDF Average RunNumber M23-2 M23-3 M23-1 Mass_mg 0.0000000027 0.000000008 0.0000000054 0.000 lb/mmBtuO2 2.95E-13 8.27E-13 5.19E-13 0.000 ng/dscm 3.16E-04 9.16E-04 5.33E-04 0.001 ng/dscm@7%O2 3.16E-04 9.09E-04 5.45E-04 0.001


### Compound: Other HxCDD Average RunNumber M23-2 M23-3 M23-1 Mass_mg 0.0000000024 0.0000000073 0.0000000023 0.000 lb/mmBtuO2 2.62E-13 7.55E-13 2.21E-13 0.000 ng/dscm 2.81E-04 8.35E-04 2.27E-04 0.000 ng/dscm@7%O2 2.81E-04 8.29E-04 2.32E-04 0.000


### Compound: Other HxCDF Average RunNumber M23-2 M23-3 M23-1 Mass_mg 0.0000000019 0.0000000028 0.0000000028 0.000 lb/mmBtuO2 2.07E-13 2.89E-13 2.69E-13 0.000 ng/dscm 2.22E-04 3.20E-04 2.76E-04 0.000 ng/dscm@7%O2 2.22E-04 3.18E-04 2.82E-04 0.000


### Compound: Other PeCDD Average RunNumber M23-1 M23-2 M23-3 Mass_mg 0.000000002 0.0000000025 0.0000000028 0.000 lb/mmBtuO2 1.92E-13 2.73E-13 2.89E-13 0.000 ng/dscm 1.97E-04 2.92E-04 3.20E-04 0.000 ng/dscm@7%O2 2.01E-04 2.92E-04 3.18E-04 0.000



### Tuesday, February 22, 2011 Page 13 of 24

### Craig Generating Station Unit 2 Stack

Compound: Other PeCDF Average RunNumber M23-2 M23-3 M23-1 Mass_mg 0.000000002 0.0000000074 0.0000000023 0.000 lb/mmBtuO2 2.18E-13 7.65E-13 2.21E-13 0.000 ng/dscm 2.34E-04 8.47E-04 2.27E-04 0.000 ng/dscm@7%O2 2.34E-04 8.41E-04 2.32E-04 0.000


### Compound: Other TCDD Average RunNumber M23-1 M23-3 M23-2 Mass_mg 0.0000000027 0.0000000025 0.0000000023 0.000 lb/mmBtuO2 2.60E-13 2.58E-13 2.51E-13 0.000 ng/dscm 2.66E-04 2.86E-04 2.69E-04 0.000 ng/dscm@7%O2 2.72E-04 2.84E-04 2.69E-04 0.000


### Compound: Other TCDF Average RunNumber M23-2 M23-3 M23-1 Mass_mg 0.0000000032 0.0000000035 0.000000034 0.000 lb/mmBtuO2 3.49E-13 3.62E-13 3.27E-12 0.000 ng/dscm 3.74E-04 4.01E-04 3.35E-03 0.001 ng/dscm@7%O2 3.74E-04 3.98E-04 3.42E-03 0.001



### Location: Stack - Method 29 Compound: Antimony Average RunNumber M29-1 M29-2 M29-3 Mass_mg 0.00349 0.00215 0.00292 0.003 lb/mmBtuO2 6.41E-07 3.28E-07 4.43E-07 0.000


### Compound: Arsenic Average RunNumber M29-1 M29-2 M29-3 Mass_mg 0.0018 0.0018 0.0018 0.002 lb/mmBtuO2 3.31E-07 2.74E-07 2.73E-07 0.000


### Compound: Beryllium Average RunNumber M29-1 M29-2 M29-3 Mass_mg 0.00045 0.00045 0.00045 0.000 lb/mmBtuO2 8.26E-08 6.86E-08 6.82E-08 0.000


### Compound: Cadmium Average RunNumber M29-1 M29-2 M29-3 Mass_mg 0.00079 0.00048 0.00089 0.001 lb/mmBtuO2 1.45E-07 7.31E-08 1.35E-07 0.000


### Compound: Chromium Average RunNumber M29-1 M29-2 M29-3 Mass_mg 0.00997 0.00745 0.01004 0.009



### Tuesday, February 22, 2011 Page 14 of 24

### Craig Generating Station Unit 2 Stack

lb/mmBtuO2 1.83E-06 1.14E-06 1.52E-06 0.000


### Compound: Cobalt Average RunNumber M29-1 M29-2 M29-3 Mass_mg 0.00066 0.00059 0.00084 0.001 lb/mmBtuO2 1.21E-07 8.99E-08 1.27E-07 0.000


### Compound: Lead Average RunNumber M29-1 M29-2 M29-3 Mass_mg 0.00157 0.0014 0.00134 0.001 lb/mmBtuO2 2.88E-07 2.13E-07 2.03E-07 0.000


### Compound: Manganese Average RunNumber M29-1 M29-2 M29-3 Mass_mg 0.11399 0.10889 0.20329 0.142 lb/mmBtuO2 2.09E-05 1.66E-05 3.08E-05 0.000


### Compound: Nickel Average RunNumber M29-1 M29-2 M29-3 Mass_mg 0.01468 0.00868 0.00978 0.011 lb/mmBtuO2 2.70E-06 1.32E-06 1.48E-06 0.000


### Compound: Selenium Average RunNumber M29-1 M29-2 M29-3 Mass_mg 0.007 0.0045 0.0054 0.006 lb/mmBtuO2 1.29E-06 6.86E-07 8.18E-07 0.000



### Location: Stack - Method 5/OTM-28 Compound: Filterable Particulate Average RunNumber M5B/OTM28-1 M5B/OTM28-2 M5B/OTM28-3 Mass_mg 15.6 20.5 32.7 22.933 lb/mmBtuO2 3.06E-03 4.18E-03 6.46E-03 0.005


### Compound: Inorganic (Aqueous) Condensible Pa Average RunNumber M5B/OTM28-1 M5B/OTM28-2 M5B/OTM28-3 Mass_mg 7 7.6 11.1 8.567 lb/mmBtuO2 1.37E-03 1.55E-03 2.19E-03 0.002


### Compound: Organic Condensible Particulate Average RunNumber M5B/OTM28-1 M5B/OTM28-2 M5B/OTM28-3 Mass_mg 1.3 1.6 7.8 3.567 lb/mmBtuO2 2.55E-04 3.26E-04 1.54E-03 0.001


### Compound: Total Particulate Average



### Tuesday, February 22, 2011 Page 15 of 24

### Craig Generating Station Unit 2 Stack

Process Run Data RunNumber M5B/OTM28-1 M5B/OTM28-2 M5B/OTM28-3 Mass_mg 23.9 29.7 51.6 35.067 lb/mmBtuO2 4.69E-03 6.06E-03 1.02E-02 0.007



### Tuesday, February 22, 2011 Page 16 of 24

### Craig Generating Station Unit 2 Stack

Process Run Data

APCD Run Data

Process Lab Run Data



### Tuesday, February 22, 2011 Page 17 of 24

### Craig Generating Station Unit 2 Stack

Sampling / Stack Data Results Detail



### Location Stack - Method 23 Average Run Number M23-1 M23-2 M23-3 Test Date 5/4/2010 5/5/2010 5/7/2010 Run Start Time 7:20:00 AM 6:45:00 AM 12:27:00 PM Run Finish Time 4:01:00 PM 3:24:00 PM 9:15:00 PM Net Traversing Points 2 2 2 Net Run Time, minutes 480 480 480 Nozzle Diameter, inches 0.28 0.252 0.252 0.261 Pitot Tube Coefficient 0.84 0.84 0.84 0.840 Dry Gas Meter Calibration Factor 0.992 0.992 0.992 0.992 Barometric Pressure, inches of Mercury 23.88 23.9 23.36 23.713 Average Orifice Meter Differential, inches H2O 1.94 1.27 1.26 1.490 Dry Gas Meter Volume Sampled, cubic feet 449.516 379.161 395.410 408.029 Average Dry Gas Meter Temperature, °F 68.00 67.00 66.00 67.000 Dry Gas Meter Volume Sampled, dscf 358.027 302.196 308.630 322.951 Total Moisture Liquid collected, g 982.8 892.3 895.5 923.533 Volume of Water Vapor, standard cubic feet 46.26 42.00 42.15 43.470 Moisture Content of Stack Gas, % 11.44 12.20 12.02 11.887 Moisture Saturation at Stack Gas Temperature, % 13.64 13.63 13.95 13.740 Dry Mole Fraction 0.8856 0.878 0.8798 0.881 Carbon Dioxide, % 11.8 12.2 12 12.000 Oxygen, % 7.3 7 6.9 7.067 Carbon Monoxide & Nitrogen, % 80.9 80.8 81.1 80.933 Fuel Factor 1.15 1.14 1.17 Dry Molecular Weight, lb/lb-Mole 30.18 30.23 30.20 30.203 Wet Molecular weight, lb/lb-Mole 28.79 28.74 28.73 28.753 Flue Gas Static Pressure, inches of H2O -0.3 -0.3 -0.4 -0.333 Absolute Flue Gas Pressure, inches of Mercury 23.86 23.88 23.33 23.690 Average Stack Gas Temperature, °F 118.00 118.00 118.00 118.000 Average Velocity Head, inches of H2O 0.48 0.47 0.46 0.470 Average Stack Gas Velocity, feet/second 45.64 45.18 45.23 45.350 Stack Cross-Sectional Area, square feet 615.752 615.752 615.752 615.752 Dry Volumetric Flow Rate, dry scfm 1,087,815.5 1,068,505.2 1,047,193.3 1,067,838.0 00 Actual Wet Volumetric Flue Gas Flow Rate, acfm 1,686,175.3 1,669,180.5 1,671,027.8 1,675,461.2 00 Percent Isokinetic of Sampling Rate, % 98.7 104.7 109.2 104.200 Percent Excess Air, % 51.9 48.8 47.6 49.433 F-Factor, dscfm/MMBtu @ %O2 10157 9946 9695 9,932.667 Round Duct Diameter, inches 336 336 336 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



### Tuesday, February 22, 2011 Page 18 of 24

### Craig Generating Station Unit 2 Stack

Location Stack - Method 29 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



### Tuesday, February 22, 2011 Page 19 of 24

### Craig Generating Station Unit 2 Stack

Location Stack - Method 3A CO2 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



### Tuesday, February 22, 2011 Page 20 of 24

### Craig Generating Station Unit 2 Stack

Location Stack - Method 3A CO2 3 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



### Tuesday, February 22, 2011 Page 21 of 24

### Craig Generating Station Unit 2 Stack

Location Stack - Method 3A O2 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



### Tuesday, February 22, 2011 Page 22 of 24

### Craig Generating Station Unit 2 Stack

Location Stack - Method 3A O2 3 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



### Tuesday, February 22, 2011 Page 23 of 24

### Craig Generating Station Unit 2 Stack

Location Stack - Method 5/OTM-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



### Tuesday, February 22, 2011 Page 24 of 24