### Name: C.D. Holley

Title: Vice President F&H System Operation Company: Dominion Generation Sign Date: 10/18/2010 Name: Michael P. Martin Title: Senior Project Manager Company: TRC Companies, Inc. Sign Date: 10/18/2010 Permitted Facility Representative / Date Testing Company Representative / Date



## Utility Boiler MACT ICR - Yorktown Power Station Unit 3 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.

Thursday, January 13, 2011 Page 1 of 35

### Utility Boiler MACT ICR - Yorktown Power Station Unit 3
10/18/2010 Facility Information:
Yorktown 1600 Waterview Road

Yorktown VA23692 Contact:David Nuckols Phone: 804-796-6021 Fax: 804-796-6004 Email: david.nuckols@dom.com Testing Company: TRC Companies, Inc. 650 Suffolk Street

Lowell MA01854 Contact:Michael P. Martin Phone:978-656-3550 Fax: 978-453-4215 Email: mmartin@trcsolutions.com

Air Permit Number: 3809 Permitted Source ID/Name: 3 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: Unit 3 is an 8900 mmBtu/hr tangentially fired oil boiler w/ multicyclones. Industry/SCC/NAIS221112

Sampling Location Information:

Test Parameter Information: AFS #:5119900001 FRS #:110000342371

SCC / Description10100404 External Combustion Boilers - Electric Generation - Residual Oil - Grade 6 Oil: Tangential Firing

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 321 2880 1914 4 0 6 0 0

Target Parameter Test Method Number of

Test Runs Test Run

Duration Sample

Points Comments Location Carbon Monoxide Method 10 3 180 0 Stack Exit Formaldehyde Method 0011 3 120 0 Stack Exit 2,3,7,8-TCDD Method 23 3 480 0 Stack Exit 1,2,3,7,8-PeCDD Method 23 3 480 0 Stack Exit 1,2,3,4,7,8-HxCDD Method 23 3 480 0 Stack Exit 1,2,3,6,7,8-HxCDD Method 23 3 480 0 Stack Exit 1,2,3,7,8,9-HxCDD Method 23 3 480 0 Stack Exit



### Thursday, January 13, 2011 Page 2 of 35

### Utility Boiler MACT ICR - Yorktown Power Station Unit 3
10/18/2010 1,2,3,4,6,7,8-HpCDD Method 23 3 480 0 Stack Exit OCDD Method 23 3 480 0 Stack Exit 2,3,7,8-TCDF Method 23 3 480 0 Stack Exit 1,2,3,7,8-PeCDF Method 23 3 480 0 Stack Exit 2,3,4,7,8-PeCDF Method 23 3 480 0 Stack Exit 1,2,3,4,7,8-HxCDF Method 23 3 480 0 Stack Exit 1,2,3,6,7,8-HxCDF Method 23 3 480 0 Stack Exit 2,3,4,6,7,8-HxCDF Method 23 3 480 0 Stack Exit 1,2,3,7,8,9-HxCDF Method 23 3 480 0 Stack Exit 1,2,3,4,6,7,8-HpCDF Method 23 3 480 0 Stack Exit 1,2,3,4,7,8,9-HpCDF Method 23 3 480 0 Stack Exit OCDF Method 23 3 480 0 Stack Exit Other TCDD Method 23 0 Stack Exit Other PeCDD Method 23 0 Stack Exit Other HxCDD Method 23 0 Stack Exit Other HpCDD Method 23 0 Stack Exit Other TCDF Method 23 0 Stack Exit Other PeCDF Method 23 0 Stack Exit Other HxCDF Method 23 0 Stack Exit Other HpCDF Method 23 0 Stack Exit Total Dioxins Method 23 3 480 0 Stack Exit Total Furans Method 23 3 480 0 Stack Exit 3,3',4,4'-TCB (PCB77) Method 23 3 480 0 Stack Exit 3,4,4',5-TCB (PCB81) Method 23 3 480 0 Stack Exit 2,3,3',4,4'-PeCB (PCB105) Method 23 3 480 0 Stack Exit 2,3,4,4',5-PeCB (PCB114) Method 23 3 480 0 Stack Exit 2,3',4,4',5-PeCB (PCB118) Method 23 3 480 0 Stack Exit 2',3,4,4',5-PeCB (PCB123) Method 23 3 480 0 Stack Exit 3,3',4,4',5-PeCB (PCB126) Method 23 3 480 0 Stack Exit 2,3,3',4,4',5/2,3,3',4,4',5'-

HxCB (PCBs156/157) Method 23 3 480 0 Stack Exit
2,3',4,4',5,5'-HxCB (PCB167)Method 23 3 480 0 Stack Exit 3,3',4,4',5,5'-HxCB (PCB169)Method 23 3 480 0 Stack Exit 2,3,3',4,4',5,5'-HpCB

(PCB189) Method 23 3 480 0 Stack Exit
Total organic compounds

(TOC) as Propane Method 25A 3 180 0 NMHC emissions only. Methane emissions reported in excel template. Stack Exit

Hydrogen Chloride Method 26A 3 60 0 Stack Exit Hydrogen Fluoride Method 26A 3 60 0 Stack Exit Filterable PM2.5 OTM - 27/28 3 180 0 Stack Exit Filterable Particulate OTM - 27/28 3 180 0 Stack Exit Total Particulate OTM - 27/28 3 180 0 Stack Exit Organic Condensible

Particulate OTM - 27/28 3 180 0 Stack Exit
Inorganic (Aqueous)

Condensible Part. OTM - 27/28 3 180 0 Stack Exit

Total PM2.5 OTM - 27/28 3 180 0 Stack Exit Antimony Method 29 3 240 0 Stack Exit Nickel Method 29 3 240 0 Stack Exit Manganese Method 29 3 240 0 Stack Exit Lead Method 29 3 240 0 Stack Exit



### Thursday, January 13, 2011 Page 3 of 35

### Utility Boiler MACT ICR - Yorktown Power Station Unit 3
10/18/2010

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.

Selenium Method 29 3 240 0 Stack Exit Arsenic Method 29 3 240 0 Stack Exit Cobalt Method 29 3 240 0 Stack Exit Chromium Method 29 3 240 0 Stack Exit Beryllium Method 29 3 240 0 Stack Exit Cadmium Method 29 3 240 0 Stack Exit Sulfur Dioxide Method 6C 3 180 0 Stack Exit Nitrogen oxides (NOx) Method 7E 3 180 0 Stack Exit



### Thursday, January 13, 2011 Page 4 of 35

### Utility Boiler MACT ICR - Yorktown Power Station Unit 3
10/18/2010 Sampling / Stack Data Results Summary


### Location Stack Exit - Method 0011 Average Run Number 1 2 3 Test Date 6/4/2010 6/4/2010 6/4/2010 Run Start Time Run Finish Time Net Run Time, minutes 120 120 120 Dry Gas Meter Volume Sampled, dscf 93.095 91.426 92.063 92.195 Moisture Content of Stack Gas, % 9.99 9.59 8.84 9.473 Moisture Saturation at Stack Gas Temperature, % 100.00 100.00 100.00 100.000 Carbon Dioxide, % 8.871 8.901 8.93 8.901 Oxygen, % 9.714 9.691 9.667 9.691 Average Stack Gas Temperature, °F 278.38 278.54 276.33 277.750 Dry Volumetric Flow Rate, dry scfm 1,042,897.11,053,020.9 1,069,028.1 1,054,982.03 3 Actual Wet Volumetric Flue Gas Flow Rate, acfm 1,629,016.11,638,457.7 1,644,190.1 1,637,221.30 0 Percent Isokinetic of Sampling Rate, % 99.9 97.2 96.4 97.833 F-Factor, dscfm/MMBtu @ %O2 9190 9190 9190 9,190.000 Fw 10320 10320 10320 10,320.000 Fc 1420 1420 1420 1,420.000



### Location Stack Exit - Method 10 Average Run Number 1 2 3 Test Date 6/3/2010 6/3/2010 6/3/2010 Run Start Time 3:08:00 PM5:49:00 PM 8:20:00 PM Run Finish Time 5:08:00 PM7:49:00 PM10:20:00 PM Carbon Dioxide, % 8.94 8.883 8.858 8.894 Oxygen, % 9.693 9.756 9.805 9.751 Dry Volumetric Flow Rate, dry scfm 0 0 0 0.000 F-Factor, dscfm/MMBtu @ %O2 9190 9190 9190 9,190.000 Moisture, % 0 0 0 0.000 Fuel Type Oil Oil Oil Fw 10320 10320 10320 10,320.000 Fc 1420 1420 1420 1,420.000



### Thursday, January 13, 2011 Page 5 of 35

### Utility Boiler MACT ICR - Yorktown Power Station Unit 3
10/18/2010
Location Stack Exit - Method 23 Average Run Number 1 2 3 Test Date 6/2/2010 6/2/2010 6/3/2010 Run Start Time Run Finish Time Net Run Time, minutes 480 480 480 Dry Gas Meter Volume Sampled, dscf 385.816 363.326 372.773 373.972 Moisture Content of Stack Gas, % 9.09 9.39 9.04 9.173 Moisture Saturation at Stack Gas Temperature, % 100.00 100.00 100.00 100.000 Carbon Dioxide, % 8.6 8.7 8.5 8.600 Oxygen, % 10.1 9.9 10.3 10.100 Average Stack Gas Temperature, °F 275.63 272.86 276.16 274.883 Dry Volumetric Flow Rate, dry scfm 1,059,257.21,004,549.2 1,026,103.81,029,970.06 7 Actual Wet Volumetric Flue Gas Flow Rate, acfm 1,616,876.91,579,447.6 1,581,808.01,592,710.83 3 Percent Isokinetic of Sampling Rate, % 98.3 98.3 98.8 98.467 F-Factor, dscfm/MMBtu @ %O2 9190 9190 9190 9,190.000 Fw 10320 10320 10320 10,320.000 Fc 1420 1420 1420 1,420.000



### Location Stack Exit - Method 25A Average Run Number 1 2 3 Test Date 6/3/2010 6/3/2010 6/3/2010 Run Start Time 3:08:00 PM5:49:00 PM 8:20:00 PM Run Finish Time 5:08:00 PM7:49:00 PM10:20:00 PM Carbon Dioxide, % Oxygen, % 9.693 9.756 9.805 9.751 Dry Volumetric Flow Rate, dry scfm 0 0 0 0.000 F-Factor, dscfm/MMBtu @ %O2 9190 9190 9190 9,190.000 Moisture, % 9.41 9.41 9.3 9.373 Fuel Type Oil Oil Oil Fw 10320 10320 10320 10,320.000 Fc 1420 1420 1420 1,420.000



### Thursday, January 13, 2011 Page 6 of 35

### Utility Boiler MACT ICR - Yorktown Power Station Unit 3
10/18/2010
Location Stack Exit - Method 26A Average Run Number 1 2 3 Test Date 6/4/2010 6/4/2010 6/5/2010 Run Start Time Run Finish Time Net Run Time, minutes 60 60 60 Dry Gas Meter Volume Sampled, dscf 48.483 48.438 48.450 48.457 Moisture Content of Stack Gas, % 10.62 10.20 10.67 10.497 Moisture Saturation at Stack Gas Temperature, % 100.00 100.00 100.00 100.000 Carbon Dioxide, % 8.9 9 9 8.967 Oxygen, % 9.7 9.5 9.5 9.567 Average Stack Gas Temperature, °F 276.33 276.33 276.21 276.290 Dry Volumetric Flow Rate, dry scfm 1,037,035.11,039,564.4 1,030,972.91,035,857.46 7 Actual Wet Volumetric Flue Gas Flow Rate, acfm 1,648,910.91,645,201.7 1,640,480.91,644,864.50 0 Percent Isokinetic of Sampling Rate, % 101.7 101.3 102.2 101.733 F-Factor, dscfm/MMBtu @ %O2 9190 9190 9190 9,190.000 Fw 10320 10320 10320 10,320.000 Fc 1420 1420 1420 1,420.000



### Thursday, January 13, 2011 Page 7 of 35

### Utility Boiler MACT ICR - Yorktown Power Station Unit 3
10/18/2010
Location Stack Exit - Method 29 Average Run Number 1 2 3 Test Date 6/3/2010 6/3/2010 6/4/2010 Run Start Time Run Finish Time Net Run Time, minutes 240 240 240 Dry Gas Meter Volume Sampled, dscf 162.050 156.830 186.551 168.477 Moisture Content of Stack Gas, % 9.39 9.28 9.56 9.410 Moisture Saturation at Stack Gas Temperature, % 100.00 100.00 100.00 100.000 Carbon Dioxide, % 8.89 8.827 8.793 8.837 Oxygen, % 9.725 9.848 9.862 9.812 Average Stack Gas Temperature, °F 276.25 273.10 274.50 274.617 Dry Volumetric Flow Rate, dry scfm 1,058,850.71,047,878.7 1,053,603.61,053,444.33 3 Actual Wet Volumetric Flue Gas Flow Rate, acfm 1,638,794.91,623,283.7 1,627,667.31,629,915.30 0 Percent Isokinetic of Sampling Rate, % 98.7 96.5 99.1 98.100 F-Factor, dscfm/MMBtu @ %O2 9190 9190 9190 9,190.000 Fw 10320 10320 10320 10,320.000 Fc 1420 1420 1420 1,420.000



### Location Stack Exit - Method 6C Average Run Number 1 2 3 Test Date 6/3/2010 6/3/2010 6/3/2010 Run Start Time 3:08:00 PM5:49:00 PM 8:20:00 PM Run Finish Time 5:08:00 PM7:49:00 PM10:20:00 PM Carbon Dioxide, % 8.94 8.883 8.858 8.894 Oxygen, % 9.693 9.756 9.805 9.751 Dry Volumetric Flow Rate, dry scfm 0 0 0 0.000 F-Factor, dscfm/MMBtu @ %O2 9190 9190 9190 9,190.000 Moisture, % 0 0 0 0.000 Fuel Type Oil Oil Oil Fw 10320 10320 10320 10,320.000 Fc 1420 1420 1420 1,420.000



### Thursday, January 13, 2011 Page 8 of 35

### Utility Boiler MACT ICR - Yorktown Power Station Unit 3
10/18/2010
Location Stack Exit - Method 7E Average Run Number 1 2 3 Test Date 6/3/2010 6/3/2010 6/3/2010 Run Start Time 3:08:00 PM5:49:00 PM 8:20:00 PM Run Finish Time 5:08:00 PM7:49:00 PM10:20:00 PM Carbon Dioxide, % 8.94 8.883 8.858 8.894 Oxygen, % 9.693 9.756 9.805 9.751 Dry Volumetric Flow Rate, dry scfm 0 0 0 0.000 F-Factor, dscfm/MMBtu @ %O2 9190 9190 9190 9,190.000 Moisture, % 0 0 0 0.000 Fuel Type Oil Oil Oil Fw 10320 10320 10320 10,320.000 Fc 1420 1420 1420 1,420.000



### Location Stack Exit - OTM - 27/28 Average Run Number 1 2 3 Test Date 6/2/2010 6/2/2010 6/3/2010 Run Start Time Run Finish Time Net Run Time, minutes 155.75 153.25 135.5 Dry Gas Meter Volume Sampled, dscf 57.943 57.827 49.094 54.955 Moisture Content of Stack Gas, % 8.88 9.32 9.54 9.247 Moisture Saturation at Stack Gas Temperature, % 100.00 100.00 100.00 100.000 Carbon Dioxide, % 8.66 8.22 8.38 8.420 Oxygen, % 10.01 10.68 10.44 10.377 Average Stack Gas Temperature, °F 273.92 274.00 270.92 272.947 Dry Volumetric Flow Rate, dry scfm 1,132,089.91,099,972.9 1,093,190.61,108,417.80 0 Actual Wet Volumetric Flue Gas Flow Rate, acfm 1,720,060.31,674,538.2 1,717,699.91,704,099.46 7 Percent Isokinetic of Sampling Rate, % 96.8 102.2 97.7 98.900 F-Factor, dscfm/MMBtu @ %O2 9190 9190 9190 9,190.000 Fw 10320 10320 10320 10,320.000 Fc 1420 1420 1420 1,420.000



### Thursday, January 13, 2011 Page 9 of 35

### Utility Boiler MACT ICR - Yorktown Power Station Unit 3
10/18/2010 Emissions Summary


### Location: Stack Exit - Method 0011 Compound: Formaldehyde Average RunNumber 1 3 2 Mass_mg 0.0234 0.0185 0.0226 0.022 lb/mmBtuO2 9.52E-06 7.58E-06 9.34E-06 0.000 ppm 7.11E-03 5.68E-03 6.99E-03 0.007 ppm@7%O2 8.84E-03 7.03E-03 8.67E-03 0.008



### Location: Stack Exit - Method 10 Compound: Carbon Monoxide Average Run 1 2 3 lb/mmBtuO2 1.88E-05 1.89E-04 -1.59E-04 0.000 ppm 1.51E-02 1.51E-01 -1.26E-01 0.013 ppm@7%O2 1.87E-02 1.88E-01 -1.58E-01 0.016



### Location: Stack Exit - Method 23 Compound: 1,2,3,4,6,7,8-HpCDD Average RunNumber 1 2 3 Mass_mg 0.0000000181 0.000000016 0.000000013 0.000 lb/mmBtuO2 1.84E-12 1.70E-12 1.39E-12 0.000 ng/dscm 1.66E-03 1.56E-03 1.23E-03 0.001 ng/dscm@7%O2 2.14E-03 1.97E-03 1.61E-03 0.002 

### Compound: 1,2,3,4,6,7,8-HpCDF Average RunNumber 1 2 3 Mass_mg 0.000000009 0.0000000052 0.0000000109 0.000 lb/mmBtuO2 9.15E-13 5.51E-13 1.17E-12 0.000 ng/dscm 8.24E-04 5.06E-04 1.03E-03 0.001 ng/dscm@7%O2 1.06E-03 6.39E-04 1.35E-03 0.001 

### Compound: 1,2,3,4,7,8,9-HpCDF Average RunNumber 1 2 3 Mass_mg 0.0000000042 0.00000000559 0.0000000057 0.000 lb/mmBtuO2 4.27E-13 5.92E-13 6.11E-13 0.000 ng/dscm 3.84E-04 5.43E-04 5.40E-04 0.000 ng/dscm@7%O2 4.94E-04 6.86E-04 7.08E-04 0.001 

### Compound: 1,2,3,4,7,8-HxCDD Average RunNumber 1 2 3 Mass_mg 0.0000000044 0.0000000063 0.0000000052 0.000 lb/mmBtuO2 4.47E-13 6.67E-13 5.57E-13 0.000 ng/dscm 4.03E-04 6.12E-04 4.93E-04 0.001 ng/dscm@7%O2 5.19E-04 7.73E-04 6.46E-04 0.001



### Thursday, January 13, 2011 Page 10 of 35

### Utility Boiler MACT ICR - Yorktown Power Station Unit 3
10/18/2010 Compound: 1,2,3,4,7,8-HxCDF Average RunNumber 1 2 3 Mass_mg 0.0000000037 0.0000000038 0.0000000028 0.000 lb/mmBtuO2 3.76E-13 4.03E-13 3.00E-13 0.000 ng/dscm 3.39E-04 3.69E-04 2.65E-04 0.000 ng/dscm@7%O2 4.36E-04 4.66E-04 3.48E-04 0.000 

### Compound: 1,2,3,6,7,8-HxCDD Average RunNumber 1 2 3 Mass_mg 0.0000000047 0.0000000067 0.0000000055 0.000 lb/mmBtuO2 4.78E-13 7.10E-13 5.89E-13 0.000 ng/dscm 4.30E-04 6.51E-04 5.21E-04 0.001 ng/dscm@7%O2 5.53E-04 8.23E-04 6.83E-04 0.001 

### Compound: 1,2,3,6,7,8-HxCDF Average RunNumber 1 2 3 Mass_mg 0.0000000032 0.0000000034 0.0000000042 0.000 lb/mmBtuO2 3.25E-13 3.60E-13 4.50E-13 0.000 ng/dscm 2.93E-04 3.31E-04 3.98E-04 0.000 ng/dscm@7%O2 3.77E-04 4.18E-04 5.22E-04 0.000 

### Compound: 1,2,3,7,8,9-HxCDD Average RunNumber 1 2 3 Mass_mg 0.0000000045 0.0000000064 0.0000000053 0.000 lb/mmBtuO2 4.57E-13 6.78E-13 5.68E-13 0.000 ng/dscm 4.12E-04 6.22E-04 5.02E-04 0.001 ng/dscm@7%O2 5.30E-04 7.86E-04 6.58E-04 0.001 

### Compound: 1,2,3,7,8,9-HxCDF Average RunNumber 1 2 3 Mass_mg 0.0000000029 0.0000000039 0.0000000029 0.000 lb/mmBtuO2 2.95E-13 4.13E-13 3.11E-13 0.000 ng/dscm 2.65E-04 3.79E-04 2.75E-04 0.000 ng/dscm@7%O2 3.41E-04 4.79E-04 3.61E-04 0.000 

### Compound: 1,2,3,7,8-PeCDD Average RunNumber 1 2 3 Mass_mg 0.0000000071 0.000000006 0.0000000063 0.000 lb/mmBtuO2 7.22E-13 6.36E-13 6.75E-13 0.000 ng/dscm 6.50E-04 5.83E-04 5.97E-04 0.001 ng/dscm@7%O2 8.37E-04 7.37E-04 7.83E-04 0.001 

### Compound: 1,2,3,7,8-PeCDF Average RunNumber 1 2 3 Mass_mg 0.00000000613 0.0000000053 0.0000000113 0.000 lb/mmBtuO2 6.23E-13 5.62E-13 1.21E-12 0.000



### Thursday, January 13, 2011 Page 11 of 35

### Utility Boiler MACT ICR - Yorktown Power Station Unit 3
10/18/2010 ng/dscm 5.61E-04 5.15E-04 1.07E-03 0.001 ng/dscm@7%O2 7.22E-04 6.51E-04 1.40E-03 0.001 

### Compound: 2,3,3',4,4',5,5'-HpCB (PCB189) Average RunNumber 1 2 3 Mass_mg 0.00000000498 0.0000000036 0.0000000035 0.000 lb/mmBtuO2 5.06E-13 3.81E-13 3.75E-13 0.000 ng/dscm 4.56E-04 3.50E-04 3.32E-04 0.000 ng/dscm@7%O2 5.87E-04 4.42E-04 4.35E-04 0.000 

### Compound: 2,3,3',4,4',5/2,3,3',4,4',5'-HxCB (PC Average RunNumber 1 2 3 Mass_mg 0.00000007 0.0000000508 0.0000000621 0.000 lb/mmBtuO2 7.11E-12 5.38E-12 6.65E-12 0.000 ng/dscm 6.41E-03 4.94E-03 5.88E-03 0.006 ng/dscm@7%O2 8.25E-03 6.24E-03 7.71E-03 0.007 

### Compound: 2,3,3',4,4'-PeCB (PCB105) Average RunNumber 1 2 3 Mass_mg 0.000000352 0.000000234 0.000000672 0.000 lb/mmBtuO2 3.58E-11 2.48E-11 7.20E-11 0.000 ng/dscm 3.22E-02 2.27E-02 6.37E-02 0.040 ng/dscm@7%O2 4.14E-02 2.87E-02 8.35E-02 0.051 

### Compound: 2,3',4,4',5,5'-HxCB (PCB167) Average RunNumber 1 2 3 Mass_mg 0.000000027 0.00000002 0.0000000244 0.000 lb/mmBtuO2 2.74E-12 2.12E-12 2.61E-12 0.000 ng/dscm 2.47E-03 1.94E-03 2.31E-03 0.002 ng/dscm@7%O2 3.18E-03 2.45E-03 3.03E-03 0.003 

### Compound: 2,3,4,4',5-PeCB (PCB114) Average RunNumber 1 2 3 Mass_mg 0.0000000283 0.00000002 0.000000059 0.000 lb/mmBtuO2 2.88E-12 2.12E-12 6.32E-12 0.000 ng/dscm 2.59E-03 1.94E-03 5.59E-03 0.003 ng/dscm@7%O2 3.33E-03 2.45E-03 7.33E-03 0.004 

### Compound: 2,3',4,4',5-PeCB (PCB118) Average RunNumber 1 2 3 Mass_mg 0.00000101 0.000000635 0.00000153 0.000 lb/mmBtuO2 1.03E-10 6.73E-11 1.64E-10 0.000 ng/dscm 9.25E-02 6.17E-02 1.45E-01 0.100 ng/dscm@7%O2 1.19E-01 7.80E-02 1.90E-01 0.129 

### Compound: 2',3,4,4',5-PeCB (PCB123) Average RunNumber 1 2 3


### Thursday, January 13, 2011 Page 12 of 35

### Utility Boiler MACT ICR - Yorktown Power Station Unit 3
10/18/2010 Mass_mg 0.00000002 0.000000012 0.0000000413 0.000 lb/mmBtuO2 2.03E-12 1.27E-12 4.43E-12 0.000 ng/dscm 1.83E-03 1.17E-03 3.91E-03 0.002 ng/dscm@7%O2 2.36E-03 1.48E-03 5.13E-03 0.003 

### Compound: 2,3,4,6,7,8-HxCDF Average RunNumber 1 2 3 Mass_mg 0.0000000041 0.0000000036 0.0000000027 0.000 lb/mmBtuO2 4.17E-13 3.81E-13 2.89E-13 0.000 ng/dscm 3.75E-04 3.50E-04 2.56E-04 0.000 ng/dscm@7%O2 4.83E-04 4.42E-04 3.36E-04 0.000 

### Compound: 2,3,4,7,8-PeCDF Average RunNumber 1 2 3 Mass_mg 0.0000000055 0.0000000049 0.0000000063 0.000 lb/mmBtuO2 5.59E-13 5.19E-13 6.75E-13 0.000 ng/dscm 5.04E-04 4.76E-04 5.97E-04 0.001 ng/dscm@7%O2 6.49E-04 6.01E-04 7.83E-04 0.001 

### Compound: 2,3,7,8-TCDD Average RunNumber 1 2 3 Mass_mg 0.0000000081 0.0000000072 0.000000011 0.000 lb/mmBtuO2 8.23E-13 7.63E-13 1.18E-12 0.000 ng/dscm 7.42E-04 7.00E-04 1.04E-03 0.001 ng/dscm@7%O2 9.55E-04 8.85E-04 1.36E-03 0.001 

### Compound: 2,3,7,8-TCDF Average RunNumber 1 2 3 Mass_mg 0.000000008 0.0000000069 0.0000000083 0.000 lb/mmBtuO2 8.13E-13 7.31E-13 8.89E-13 0.000 ng/dscm 7.32E-04 6.71E-04 7.86E-04 0.001 ng/dscm@7%O2 9.42E-04 8.48E-04 1.03E-03 0.001 

### Compound: 3,3',4,4',5,5'-HxCB (PCB169) Average RunNumber 1 2 3 Mass_mg 0.0000000022 0.0000000025 0.0000000032 0.000 lb/mmBtuO2 2.24E-13 2.65E-13 3.43E-13 0.000 ng/dscm 2.01E-04 2.43E-04 3.03E-04 0.000 ng/dscm@7%O2 2.59E-04 3.07E-04 3.97E-04 0.000 

### Compound: 3,3',4,4',5-PeCB (PCB126) Average RunNumber 1 2 3 Mass_mg 0.00000001 0.000000013 0.000000017 0.000 lb/mmBtuO2 1.02E-12 1.38E-12 1.82E-12 0.000 ng/dscm 9.15E-04 1.26E-03 1.61E-03 0.001 ng/dscm@7%O2 1.18E-03 1.59E-03 2.11E-03 0.002



### Thursday, January 13, 2011 Page 13 of 35

### Utility Boiler MACT ICR - Yorktown Power Station Unit 3
10/18/2010 Compound: 3,3',4,4'-TCB (PCB77) Average RunNumber 1 2 3 Mass_mg 0.00000032 0.00000014 0.000000854 0.000 lb/mmBtuO2 3.25E-11 1.48E-11 9.15E-11 0.000 ng/dscm 2.93E-02 1.36E-02 8.09E-02 0.041 ng/dscm@7%O2 3.77E-02 1.72E-02 1.06E-01 0.054 

### Compound: 3,4,4',5-TCB (PCB81) Average RunNumber 1 2 3 Mass_mg 0.0000000148 0.00000000654 0.0000000452 0.000 lb/mmBtuO2 1.50E-12 6.93E-13 4.84E-12 0.000 ng/dscm 1.35E-03 6.36E-04 4.28E-03 0.002 ng/dscm@7%O2 1.74E-03 8.04E-04 5.61E-03 0.003 

### Compound: OCDD Average RunNumber 1 2 3 Mass_mg 0.000000024 0.0000000385 0.000000044 0.000 lb/mmBtuO2 2.44E-12 4.08E-12 4.72E-12 0.000 ng/dscm 2.20E-03 3.74E-03 4.17E-03 0.003 ng/dscm@7%O2 2.83E-03 4.73E-03 5.47E-03 0.004 

### Compound: OCDF Average RunNumber 1 2 3 Mass_mg 0.000000014 0.000000016 0.000000024 0.000 lb/mmBtuO2 1.42E-12 1.70E-12 2.57E-12 0.000 ng/dscm 1.28E-03 1.56E-03 2.27E-03 0.002 ng/dscm@7%O2 1.65E-03 1.97E-03 2.98E-03 0.002 

### Compound: Other HpCDD Average RunNumber 1 2 3 Mass_mg 0.000000016 0 0.0000000177 0.000 lb/mmBtuO2 1.63E-12 0.00E+00 1.90E-12 0.000 ng/dscm 1.46E-03 0.00E+00 1.68E-03 0.001 ng/dscm@7%O2 1.88E-03 0.00E+00 2.20E-03 0.001 

### Compound: Other HpCDF Average RunNumber 1 2 3 Mass_mg 0 0 0 0.000 lb/mmBtuO2 0.00E+00 0.00E+00 0.00E+00 0.000 ng/dscm 0.00E+00 0.00E+00 0.00E+00 0.000 ng/dscm@7%O2 0.00E+00 0.00E+00 0.00E+00 0.000 

### Compound: Other HxCDD Average RunNumber 1 2 3 Mass_mg 0 0 0 0.000 lb/mmBtuO2 0.00E+00 0.00E+00 0.00E+00 0.000



### Thursday, January 13, 2011 Page 14 of 35

### Utility Boiler MACT ICR - Yorktown Power Station Unit 3
10/18/2010 ng/dscm 0.00E+00 0.00E+00 0.00E+00 0.000 ng/dscm@7%O2 0.00E+00 0.00E+00 0.00E+00 0.000 

### Compound: Other HxCDF Average RunNumber 1 2 3 Mass_mg 0.0000000123 0 0.00000000922 0.000 lb/mmBtuO2 1.25E-12 0.00E+00 9.88E-13 0.000 ng/dscm 1.13E-03 0.00E+00 8.74E-04 0.001 ng/dscm@7%O2 1.45E-03 0.00E+00 1.15E-03 0.001 

### Compound: Other PeCDD Average RunNumber 1 2 3 Mass_mg 0.0000000191 0 0 0.000 lb/mmBtuO2 1.94E-12 0.00E+00 0.00E+00 0.000 ng/dscm 1.75E-03 0.00E+00 0.00E+00 0.001 ng/dscm@7%O2 2.25E-03 0.00E+00 0.00E+00 0.001 

### Compound: Other PeCDF Average RunNumber 1 2 3 Mass_mg 0.00000000547 0 0 0.000 lb/mmBtuO2 5.56E-13 0.00E+00 0.00E+00 0.000 ng/dscm 5.01E-04 0.00E+00 0.00E+00 0.000 ng/dscm@7%O2 6.45E-04 0.00E+00 0.00E+00 0.000 

### Compound: Other TCDD Average RunNumber 1 2 3 Mass_mg 0.0000000116 0 0 0.000 lb/mmBtuO2 1.18E-12 0.00E+00 0.00E+00 0.000 ng/dscm 1.06E-03 0.00E+00 0.00E+00 0.000 ng/dscm@7%O2 1.36E-03 0.00E+00 0.00E+00 0.000 

### Compound: Other TCDF Average RunNumber 1 2 3 Mass_mg 0.0000000691 0 0 0.000 lb/mmBtuO2 7.02E-12 0.00E+00 0.00E+00 0.000 ng/dscm 6.33E-03 0.00E+00 0.00E+00 0.002 ng/dscm@7%O2 8.15E-03 0.00E+00 0.00E+00 0.003 

### Compound: Total Dioxins Average RunNumber 1 2 3 Mass_mg 0.0000001176 0.0000000871 0.000000108 0.000 lb/mmBtuO2 1.20E-11 9.23E-12 1.16E-11 0.000 ng/dscm 1.08E-02 8.47E-03 1.02E-02 0.010 ng/dscm@7%O2 1.39E-02 1.07E-02 1.34E-02 0.013 

### Compound: Total Furans Average RunNumber 1 2 3


### Thursday, January 13, 2011 Page 15 of 35

### Utility Boiler MACT ICR - Yorktown Power Station Unit 3
10/18/2010 Mass_mg 0.0000001476 0.00000005859 0.00000008832 0.000 lb/mmBtuO2 1.50E-11 6.21E-12 9.46E-12 0.000 ng/dscm 1.35E-02 5.70E-03 8.37E-03 0.009 ng/dscm@7%O2 1.74E-02 7.20E-03 1.10E-02 0.012



### Location: Stack Exit - Method 25A 

### Compound: Total organic compounds (TOC) as Average Run 1 2 3 lb/mmBtuO2 1.18E-06 9.47E-06 1.01E-04 0.000 ppm 6.00E-04 4.80E-03 5.10E-02 0.019 ppm@7%O2 7.44E-04 5.99E-03 6.39E-02 0.024



### Location: Stack Exit - Method 26A 

### Compound: Hydrogen Chloride Average RunNumber 1 2 3 Mass_mg 0.819 0.929 0.87 0.873 lb/mmBtuO2 6.39E-04 7.12E-04 6.67E-04 0.001 

### Compound: Hydrogen Fluoride Average RunNumber 1 2 3 Mass_mg 0.363 0.375 0.33 0.356 lb/mmBtuO2 2.83E-04 2.88E-04 2.53E-04 0.000



### Location: Stack Exit - Method 29 Compound: Antimony Average RunNumber 1 2 3 Mass_mg 0.1921 0.605124 0.186148 0.328 lb/mmBtuO2 4.49E-05 1.48E-04 3.83E-05 0.000 

### Compound: Arsenic Average RunNumber 1 2 3 Mass_mg 0.019029 0.090098 0.01757 0.042 lb/mmBtuO2 4.45E-06 2.20E-05 3.61E-06 0.000 

### Compound: Beryllium Average RunNumber 1 2 3 Mass_mg 0.00135 0.00391 0.001034 0.002 lb/mmBtuO2 3.16E-07 9.55E-07 2.13E-07 0.000 

### Compound: Cadmium Average RunNumber 1 2 3 Mass_mg 0.00311 0.01735 0.000925 0.007 lb/mmBtuO2 7.27E-07 4.24E-06 1.90E-07 0.000



### Thursday, January 13, 2011 Page 16 of 35

### Utility Boiler MACT ICR - Yorktown Power Station Unit 3
10/18/2010 Compound: Chromium Average RunNumber 1 2 3 Mass_mg 0.03619 10.200948 0.08991 3.442 lb/mmBtuO2 8.46E-06 2.49E-03 1.85E-05 0.001 

### Compound: Cobalt Average RunNumber 1 2 3 Mass_mg 0.174125 1.830109 0.1611 0.722 lb/mmBtuO2 4.07E-05 4.47E-04 3.31E-05 0.000 

### Compound: Lead Average RunNumber 1 2 3 Mass_mg 0.11638 0.411574 0.105461 0.211 lb/mmBtuO2 2.72E-05 1.01E-04 2.17E-05 0.000 

### Compound: Manganese Average RunNumber 1 2 3 Mass_mg 0.19635 1.120964 0.1672 0.495 lb/mmBtuO2 4.59E-05 2.74E-04 3.44E-05 0.000 

### Compound: Nickel Average RunNumber 1 2 3 Mass_mg 7.380991 80.20124 6.83185 31.471 lb/mmBtuO2 1.73E-03 1.96E-02 1.40E-03 0.008 

### Compound: Selenium Average RunNumber 1 2 3 Mass_mg 0.01862 0.00868 0.0209 0.016 lb/mmBtuO2 4.35E-06 2.12E-06 4.30E-06 0.000



### Location: Stack Exit - Method 6C Compound: Sulfur Dioxide Average Run 1 2 3 lb/mmBtuO2 9.50E-01 9.42E-01 9.46E-01 0.946 ppm 3.33E+02 3.29E+02 3.29E+02 330.333 ppm@7%O2 4.13E+02 4.10E+02 4.12E+02 411.667



### Location: Stack Exit - Method 7E Compound: Nitrogen oxides (NOx) Average Run 1 2 3 lb/mmBtuO2 1.62E-01 1.79E-01 1.83E-01 0.175 ppm 7.92E+01 8.70E+01 8.88E+01 85.000 ppm@7%O2 9.82E+01 1.09E+02 1.11E+02 106.067



### Thursday, January 13, 2011 Page 17 of 35

### Utility Boiler MACT ICR - Yorktown Power Station Unit 3
10/18/2010

Process Run Data Location: Stack Exit - OTM - 27/28 

### Compound: Filterable Particulate Average RunNumber 1 2 3 Mass_mg 70.6 78.4 62.7 70.567 lb/mmBtuO2 4.74E-02 5.62E-02 5.17E-02 0.052 

### Compound: Filterable PM2.5 Average RunNumber 1 2 3 Mass_mg 27.1 28.6 23.1 26.267 lb/mmBtuO2 1.82E-02 2.05E-02 1.90E-02 0.019 

### Compound: Inorganic (Aqueous) Condensible Pa Average RunNumber 1 2 3 Mass_mg 3.32 12.02 4.02 6.453 lb/mmBtuO2 2.23E-03 8.61E-03 3.31E-03 0.005 

### Compound: Organic Condensible Particulate Average RunNumber 1 2 3 Mass_mg 5.48 11.68 13.98 10.380 lb/mmBtuO2 3.68E-03 8.37E-03 1.15E-02 0.008 

### Compound: Total Particulate Average RunNumber 1 2 3 Mass_mg 79.4 102.1 80.7 87.400 lb/mmBtuO2 5.33E-02 7.32E-02 6.65E-02 0.064 

### Compound: Total PM2.5 Average RunNumber 1 2 3 Mass_mg 35.9 52.3 41.1 43.100 lb/mmBtuO2 2.41E-02 3.75E-02 3.39E-02 0.032



### Thursday, January 13, 2011 Page 18 of 35

### Utility Boiler MACT ICR - Yorktown Power Station Unit 3
10/18/2010 Process Run Data



### Run Name Value UOM Comments Target Value 1 Heat Input 3577.2Million Btus/hr Collected during M23 run 1 0



### 1 Fuel Oil Firing Rate 414.12 gpm Collected during M23 run 1 0

1 Flue Gas Flow Rate 1E+06 dscfm Collected during M23 run 1 0



### 2 Heat Input 3516.6Million Btus/hr Collected during M23 run 2 0

1 Unit Gross Electrical Output 331.85 MW Collected during M23 run 1 0

1 Unit Net Electric Generation 295.23 MW Collected during M23 run 1 0



### 1 Steam Output 2099.11000 lbs steam/hr Collected during M23 run 1 0

1 Flue Gas Sampling Point Temperature 269.83 degrees F Collected during M23 run 1 0



### 1 Flue Gas CO2 7.9 % Collected during M23 run 1 0

2 Fuel Oil Firing Rate 410.75 gpm Collected during M23 run 2 0



### 2 Flue Gas Flow Rate 1E+06 dscfm Collected during M23 run 2 0

2 Unit Gross Electrical Output 328.35 MW Collected during M23 run 2 0



### 2 Unit Net Electric Generation 291.27 MW Collected during M23 run 2 0

2 Steam Output 2071.11000 lbs steam/hr Collected during M23 run 2 0



### 2 Flue Gas Sampling Point Temperature 268.79 degrees F Collected during M23 run 2 0

2 Flue Gas CO2 7.79 % Collected during M23 run 2 0



### 3 Heat Input 3674.3Million Btus/hr Collected during M23 run 3 0

3 Fuel Oil Firing Rate 423 gpm Collected during M23 run 3 0

3 Flue Gas Flow Rate 1E+06 dscfm Collected during M23 run 3 0



### 3 Unit Gross Electrical Output 338.98 MW Collected during M23 run 3 0

3 Unit Net Electric Generation 301.71 MW Collected during M23 run 3 0



### Thursday, January 13, 2011 Page 19 of 35

### Utility Boiler MACT ICR - Yorktown Power Station Unit 3
10/18/2010 3 Steam Output 2159.41000 lbs steam/hr Collected during M23 run 3 0



### 3 Flue Gas Sampling Point Temperature 271.14 degrees F Collected during M23 run 3 0

3 Flue Gas CO2 8.03 % Collected during M23 run 3 0

4 Heat Input 3595.9Million Btus/hr Collected during OTM 27/28 run 1 0



### 4 Fuel Oil Firing Rate 415.92 gpm Collected during OTM 27/28 run 1 0

4 Flue Gas Flow Rate 1E+06 dscfm Collected during OTM 27/28 run 1 0



### 4 Unit Gross Electrical Output 333.25 MW Collected during OTM 27/28 run 1 0

4 Unit Net Electric Generation 296.35 MW Collected during OTM 27/28 run 1 0



### 4 Steam Output 21121000 lbs steam/hr Collected during OTM 27/28 run 1 0

4 Flue Gas Sampling Point Temperature 270.01 degrees F Collected during OTM 27/28 run 1 0



### 4 Flue Gas CO2 7.96 % Collected during OTM 27/28 run 1 0

5 Heat Input 3475.4Million Btus/hr Collected during OTM 27/28 run 2 0



### 5 Fuel Oil Firing Rate 407.73 gpm Collected during OTM 27/28 run 2 0

5 Flue Gas Flow Rate 1E+06 dscfm Collected during OTM 27/28 run 2 0



### 5 Unit Gross Electrical Output 325.75 MW Collected during OTM 27/28 run 2 0

5 Unit Net Electric Generation 288.79 MW Collected during OTM 27/28 run 2 0



### 5 Steam Output 2055.61000 lbs steam/hr Collected during OTM 27/28 run 2 0

5 Flue Gas Sampling Point Temperature 270.43 degrees F Collected during OTM 27/28 run 2 0

5 Flue Gas CO2 7.76 % Collected during OTM 27/28 run 2 0



### 6 Heat Input 3536.1Million Btus/hr Collected during OTM 27/28 run 3 0

6 Fuel Oil Firing Rate 411.52 gpm Collected during OTM 27/28 run 3 0



### 6 Flue Gas Flow Rate 1E+06 dscfm Collected during OTM 27/28 run 3 0

6 Unit Gross Electrical Output 329.13 MW Collected during OTM 27/28 run 3 0



### Thursday, January 13, 2011 Page 20 of 35

### Utility Boiler MACT ICR - Yorktown Power Station Unit 3
10/18/2010 6 Unit Net Electric Generation 292.06 MW Collected during OTM 27/28 run 3 0



### 6 Steam Output 2074.91000 lbs steam/hr Collected during OTM 27/28 run 3 0

6 Flue Gas Sampling Point Temperature 268.02 degrees F Collected during OTM 27/28 run 3 0

6 Flue Gas CO2 7.81 % Collected during OTM 27/28 run 3 0



### 7 Heat Input 3605.5Million Btus/hr Collected during M29 run 1 0

7 Fuel Oil Firing Rate 420.15 gpm Collected during M29 run 1 0



### 7 Flue Gas Flow Rate 1E+06 dscfm Collected during M29 run 1 0

7 Unit Gross Electrical Output 339.79 MW Collected during M29 run 1 0



### 7 Unit Net Electric Generation 302.58 MW Collected during M29 run 1 0

7 Steam Output 2141.61000 lbs steam/hr Collected during M29 run 1 0



### 7 Flue Gas Sampling Point Temperature 271.81 degrees F Collected during M29 run 1 0

7 Flue Gas CO2 7.92 % Collected during M29 run 1 0



### 8 Heat Input 3635.6Million Btus/hr Collected during M29 run 2 0

8 Fuel Oil Firing Rate 418.45 gpm Collected during M29 run 2 0



### 8 Flue Gas Flow Rate 1E+06 dscfm Collected during M29 run 2 0

8 Unit Gross Electrical Output 337 MW Collected during M29 run 2 0



### 8 Unit Net Electric Generation 299.63 MW Collected during M29 run 2 0

8 Steam Output 2122.11000 lbs steam/hr Collected during M29 run 2 0

8 Flue Gas Sampling Point Temperature 269.89 degrees F Collected during M29 run 2 0



### 8 Flue Gas CO2 7.93 % Collected during M29 run 2 0

9 Heat Input 3541.6Million Btus/hr Collected during M29 run 3 0



### 9 Fuel Oil Firing Rate 414.22 gpm Collected during M29 run 3 0

9 Flue Gas Flow Rate 1E+06 dscfm Collected during M29 run 3 0



### Thursday, January 13, 2011 Page 21 of 35

### Utility Boiler MACT ICR - Yorktown Power Station Unit 3
10/18/2010 9 Unit Gross Electrical Output 334.29 MW Collected during M29 run 3 0



### 9 Unit Net Electric Generation 297.03 MW Collected during M29 run 3 0

9 Steam Output 2098.51000 lbs steam/hr Collected during M29 run 3 0

9 Flue Gas Sampling Point Temperature 270.17 degrees F Collected during M29 run 3 0



### 9 Flue Gas CO2 7.82 % Collected during M29 run 3 0

10Heat Input 3607.2Million Btus/hr Collected during run 1 of Method 6C, 7E, 10, and 25A 0

10Fuel Oil Firing Rate 421.49 gpm Collected during run 1 of Method 6C, 7E, 10, and 25A 0

10Flue Gas Flow Rate 1E+06 dscfm Collected during run 1 of Method 6C, 7E, 10, and 25A 0

10Unit Gross Electrical Output 341.75 MW Collected during run 1 of Method 6C, 7E, 10, and 25A 0

10Unit Net Electric Generation 304.6 MW Collected during run 1 of Method 6C, 7E, 10, and 25A 0



### 10Steam Output 2150.51000 lbs steam/hr Collected during run 1 of Method 6C, 7E, 10, and 25A 0

10Flue Gas Sampling Point Temperature 272 degrees F Collected during run 1 of Method 6C, 7E, 10, and 25A 0

10Flue Gas CO2 7.97 % Collected during run 1 of Method 6C, 7E, 10, and 25A 0

11 Heat Input 3568.8Million Btus/hr Collected during run 2 of Method 6C, 7E, 10, and 25A 0

Thursday, January 13, 2011 Page 22 of 35

### Utility Boiler MACT ICR - Yorktown Power Station Unit 3
10/18/2010 11Fuel Oil Firing Rate 416.99 gpm Collected during run 2 of Method 6C, 7E, 10, and 25A 0

11Flue Gas Flow Rate 1E+06 dscfm Collected during run 2 of Method 6C, 7E, 10, and 25A 0

11Unit Gross Electrical Output 336.58 MW Collected during run 2 of Method 6C, 7E, 10, and 25A 0

11Unit Net Electric Generation 299.38 MW Collected during run 2 of Method 6C, 7E, 10, and 25A 0

11 Steam Output 21241000 lbs steam/hr Collected during run 2 of Method 6C, 7E, 10, and 25A 0

11Flue Gas Sampling Point Temperature 271.73 degrees F Collected during run 2 of Method 6C, 7E, 10, and 25A 0

11Flue Gas CO2 7.84 % Collected during run 2 of Method 6C, 7E, 10, and 25A 0

12Heat Input 3656.3Million Btus/hr Collected during run 3 of Method 6C, 7E, 10, and 25A 0

12Fuel Oil Firing Rate 420.65 gpm Collected during run 3 of Method 6C, 7E, 10, and 25A 0

12Flue Gas Flow Rate 1E+06 dscfm Collected during run 3 of Method 6C, 7E, 10, and 25A 0

12Unit Gross Electrical Output 339.5 MW Collected during run 3 of Method 6C, 7E, 10, and 25A 0

12Unit Net Electric Generation 302.19 MW Collected during run 3 of Method 6C, 7E, 10, and 25A 0



### Thursday, January 13, 2011 Page 23 of 35

### Utility Boiler MACT ICR - Yorktown Power Station Unit 3
10/18/2010 12Steam Output 2137.61000 lbs steam/hr Collected during run 3 of Method 6C, 7E, 10, and 25A 0

12Flue Gas Sampling Point Temperature 271.34 degrees F Collected during run 3 of Method 6C, 7E, 10, and 25A 0

12Flue Gas CO2 7.96 % Collected during run 3 of Method 6C, 7E, 10, and 25A 0

13Heat Input 3568.2Million Btus/hr Collected during M0011 run 1 0



### 13Fuel Oil Firing Rate 417.22 gpm Collected during M0011 run 1 0

13Flue Gas Flow Rate 1E+06 dscfm Collected during M0011 run 1 0



### 13Unit Gross Electrical Output 338.08 MW Collected during M0011 run 1 0

13Unit Net Electric Generation 300.71 MW Collected during M0011 run 1 0

13Steam Output 2122.41000 lbs steam/hr Collected during M0011 run 1 0



### 13Flue Gas Sampling Point Temperature 274.54 degrees F Collected during M0011 run 1 0

13Flue Gas CO2 7.92 % Collected during M0011 run 1 0



### 14Heat Input 3541.8Million Btus/hr Collected during M0011 run 2 0

14Fuel Oil Firing Rate 412.32 gpm Collected during M0011 run 2 0



### 14Flue Gas Flow Rate 1E+06 dscfm Collected during M0011 run 2 0

14Unit Gross Electrical Output 333.42 MW Collected during M0011 run 2 0



### 14Unit Net Electric Generation 296.16 MW Collected during M0011 run 2 0

14Steam Output 2095.41000 lbs steam/hr Collected during M0011 run 2 0



### 14Flue Gas Sampling Point Temperature 274.28 degrees F Collected during M0011 run 2 0

14Flue Gas CO2 7.87 % Collected during M0011 run 2 0



### 15Heat Input 3612.5Million Btus/hr Collected during M0011 run 3 0

Thursday, January 13, 2011 Page 24 of 35

### Utility Boiler MACT ICR - Yorktown Power Station Unit 3
10/18/2010 15Fuel Oil Firing Rate 416.43 gpm Collected during M0011 run 3 0



### 15Flue Gas Flow Rate 1E+06 dscfm Collected during M0011 run 3 0

15Unit Gross Electrical Output 336.75 MW Collected during M0011 run 3 0

15Unit Net Electric Generation 299.38 MW Collected during M0011 run 3 0



### 15Steam Output 2121.81000 lbs steam/hr Collected during M0011 run 3 0

15Flue Gas Sampling Point Temperature 272.61 degrees F Collected during M0011 run 3 0



### 15Flue Gas CO2 7.97 % Collected during M0011 run 3 0

16Heat Input 3612.5Million Btus/hr Collected during M26A run 1 0



### 16Fuel Oil Firing Rate 416.43 gpm Collected during M26A run 1 0

16Flue Gas Flow Rate 1E+06 dscfm Collected during M26A run 1 0



### 16Unit Gross Electrical Output 336.75 MW Collected during M26A run 1 0

16Unit Net Electric Generation 299.38 MW Collected during M26A run 1 0



### 16Steam Output 2121.81000 lbs steam/hr Collected during M26A run 1 0

16Flue Gas Sampling Point Temperature 272.61 degrees F Collected during M26A run 1 0



### 16Flue Gas CO2 7.97 % Collected during M26A run 1 0

17Heat Input 3623.3Million Btus/hr Collected during M26A run 2 0



### 17Fuel Oil Firing Rate 423.14 gpm Collected during M26A run 2 0

17Flue Gas Flow Rate 1E+06 dscfm Collected during M26A run 2 0

17Unit Gross Electrical Output 342.92 MW Collected during M26A run 2 0



### 17Unit Net Electric Generation 305.47 MW Collected during M26A run 2 0

17Steam Output 2163.91000 lbs steam/hr Collected during M26A run 2 0



### 17Flue Gas Sampling Point Temperature 272.48 degrees F Collected during M26A run 2 0

17Flue Gas CO2 8 % Collected during M26A run 2 0



### Thursday, January 13, 2011 Page 25 of 35

### Utility Boiler MACT ICR - Yorktown Power Station Unit 3
10/18/2010

APCD Run Data

Process Lab Run Data 18Heat Input 3613.8Million Btus/hr Collected during M26A run 3 0



### 18Fuel Oil Firing Rate 421.99 gpm Collected during M26A run 3 0

18Flue Gas Flow Rate 1E+06 dscfm Collected during M26A run 3 0

18Unit Gross Electrical Output 342.88 MW Collected during M26A run 3 0



### 18Unit Net Electric Generation 305.47 MW Collected during M26A run 3 0

18Steam Output 2159.61000 lbs steam/hr Collected during M26A run 3 0



### 18Flue Gas Sampling Point Temperature 272.26 degrees F Collected during M26A run 3 0

18Flue Gas CO2 7.98 % Collected during M26A run 3 0

Run Name Value UOM Comments Target Value 

### 1 MULTIPLE CYCLONES 0

Thursday, January 13, 2011 Page 26 of 35

### Utility Boiler MACT ICR - Yorktown Power Station Unit 3
10/18/2010 Sampling / Stack Data Results Detail


### Location Stack Exit - Method 0011 Average Run Number 1 2 3 Test Date 6/4/2010 6/4/2010 6/4/2010 Run Start Time Run Finish Time Net Traversing Points 24 24 24 Net Run Time, minutes 120 120 120 Nozzle Diameter, inches 0.277 0.277 0.277 0.277 Pitot Tube Coefficient 0.84 0.84 0.84 0.840 Dry Gas Meter Calibration Factor 0.9942 0.9942 0.9942 0.994 Barometric Pressure, inches of Mercury 29.8 29.8 29.8 29.800 Average Orifice Meter Differential, inches H2O 2.18 2.22 2.27 2.223 Dry Gas Meter Volume Sampled, cubic feet 98.236 97.077 96.771 97.361 Average Dry Gas Meter Temperature, °F 94.67 98.19 92.65 95.170 Dry Gas Meter Volume Sampled, dscf 93.095 91.426 92.063 92.195 Total Moisture Liquid collected, g 219.5 206 189.8 205.100 Volume of Water Vapor, standard cubic feet 10.33 9.70 8.93 9.653 Moisture Content of Stack Gas, % 9.99 9.59 8.84 9.473 Moisture Saturation at Stack Gas Temperature, % 100.00 100.00 100.00 100.000 Dry Mole Fraction 0.9001 0.9041 0.9116 0.905 Carbon Dioxide, % 8.871 8.901 8.93 8.901 Oxygen, % 9.714 9.691 9.667 9.691 Carbon Monoxide & Nitrogen, % 81.415 81.408 81.403 81.409 Fuel Factor 1.26 1.26 1.26 Dry Molecular Weight, lb/lb-Mole 29.81 29.81 29.82 29.813 Wet Molecular weight, lb/lb-Mole 28.63 28.68 28.78 28.697 Flue Gas Static Pressure, inches of H2O -0.6 -0.62 -0.56 -0.593 Absolute Flue Gas Pressure, inches of Mercury 29.76 29.75 29.76 29.757 Average Stack Gas Temperature, °F 278.38 278.54 276.33 277.750 Average Velocity Head, inches of H2O 0.5222373353 063070.528877150

5969120.536329954

867505 0.529
Average Stack Gas Velocity, feet/second 48.31 48.59 48.76 48.553 Stack Cross-Sectional Area, square feet 562.001 562.001 562.001 562.001 Dry Volumetric Flow Rate, dry scfm 1,042,897.1 1,053,020.9 1,069,028.11,054,982.0 33 Actual Wet Volumetric Flue Gas Flow Rate, acfm 1,629,016.1 1,638,457.7 1,644,190.11,637,221.3 00 Percent Isokinetic of Sampling Rate, % 99.9 97.2 96.4 97.833 Percent Excess Air, % 82.5 82.1 81.8 82.133 F-Factor, dscfm/MMBtu @ %O2 9190 9190 9190 9,190.000 Round Duct Diameter, inches 321 321 321 Rectangular Duct Width, inches 0 0 0 Rectangular Duct Length, inches 0 0 0 Fw 10320 10320 1032010,320.000 Fc 1420 1420 1420 1,420.000



### Thursday, January 13, 2011 Page 27 of 35

### Utility Boiler MACT ICR - Yorktown Power Station Unit 3
10/18/2010
Location Stack Exit - Method 10 Average Run Number 1 2 3 Test Date 6/3/2010 6/3/2010 6/3/2010 Run Start Time 3:08:00 PM 5:49:00 PM 8:20:00 PM Run Finish Time 5:08:00 PM 7:49:00 PM10:20:00 PM Carbon Dioxide, % 8.94 8.883 8.858 8.894 Oxygen, % 9.693 9.756 9.805 9.751 Fuel Factor 1.25 1.25 1.25 Dry Volumetric Flow Rate, dry scfm 0 0 0 0.000 F-Factor, dscfm/MMBtu @ %O2 9190 9190 9190 9,190.000 Moisture, % 0 0 0 0.000 Analyzer Make Analyzer Model Analyzer Serial Number Operating Range 0 0 0 0.000 Operating Units No. Readings/Avg. 0 0 0 0.000 Calibration Set 1 1 1 1.000 Calibration Pre Zero Cylinder ID CC149542 CC149542 CC149542 Calibration Pre Zero Cylinder Instrument Response 0.26 0.41 0.31 0.327 Calibration Pre Zero Cylinder Bias 0.04 0.11 0.06 0.070 Calibration Pre Zero Cylinder Drift 0 0 0 0.000 Calibration Pre High Cylinder ID CC91533 CC91533 CC91533 Calibration Pre High Cylinder Instrument Response 90.09 90.2 89.71 90.000 Calibration Pre High Cylinder Bias -1.27 -1.22 -1.46 -1.317 Calibration Pre High Cylinder Drift 0 0 0 0.000 Calibration Post Zero Cylinder ID CC149542 CC149542 CC149542 Calibration Post Zero Cylinder Instrument Response 0.41 0.31 0.18 0.300 Calibration Post Zero Cylinder Bias 0.11 0.06 0 0.057 Calibration Post Zero Cylinder Drift 0.07 0.05 0.06 0.060 Calibration Post High Cylinder ID CC91533 CC91533 CC91533 Calibration Post High Cylinder Instrument Response 90.2 89.71 89.13 89.680 Calibration Post High Cylinder Bias -1.22 -1.46 -1.75 -1.477 Calibration Post High Cylinder Drift 0.05 0.24 0.29 0.193 Cavg 0.35 0.51 0.12 0.327 Cavg Units ppmvd ppmvd ppmvd Cgas 0.0151 0.1509 -0.1264 0.013 Cgas Units ppmvd ppmvd ppmvd Fuel Type Oil Oil Oil Fw 10320 10320 1032010,320.000 Fc 1420 1420 1420 1,420.000 Cgasw 0 0 0 0.000 Cgasw Units



### Thursday, January 13, 2011 Page 28 of 35

### Utility Boiler MACT ICR - Yorktown Power Station Unit 3
10/18/2010
Location Stack Exit - Method 23 Average Run Number 1 2 3 Test Date 6/2/2010 6/2/2010 6/3/2010 Run Start Time Run Finish Time Net Traversing Points 96 96 96 Net Run Time, minutes 480 480 480 Nozzle Diameter, inches 0.282 0.281 0.281 0.281 Pitot Tube Coefficient 0.84 0.84 0.84 0.840 Dry Gas Meter Calibration Factor 0.9873 0.9873 0.9873 0.987 Barometric Pressure, inches of Mercury 30.09 29.2 29.8 29.697 Average Orifice Meter Differential, inches H2O 2.18 2.02 2.06 2.087 Dry Gas Meter Volume Sampled, cubic feet 404.483 388.182 395.258 395.974 Average Dry Gas Meter Temperature, °F 92.55 86.32 93.32 90.730 Dry Gas Meter Volume Sampled, dscf 385.816 363.326 372.773 373.972 Total Moisture Liquid collected, g 819.8 799.4 787.1 802.100 Volume of Water Vapor, standard cubic feet 38.59 37.63 37.05 37.757 Moisture Content of Stack Gas, % 9.09 9.39 9.04 9.173 Moisture Saturation at Stack Gas Temperature, % 100.00 100.00 100.00 100.000 Dry Mole Fraction 0.9091 0.9061 0.9096 0.908 Carbon Dioxide, % 8.6 8.7 8.5 8.600 Oxygen, % 10.1 9.9 10.3 10.100 Carbon Monoxide & Nitrogen, % 81.3 81.4 81.2 81.300 Fuel Factor 1.26 1.26 1.25 Dry Molecular Weight, lb/lb-Mole 29.78 29.79 29.77 29.780 Wet Molecular weight, lb/lb-Mole 28.71 28.68 28.71 28.700 Flue Gas Static Pressure, inches of H2O -0.62 -0.7 -0.71 -0.677 Absolute Flue Gas Pressure, inches of Mercury 30.04 29.15 29.75 29.647 Average Stack Gas Temperature, °F 275.63 272.86 276.16 274.883 Average Velocity Head, inches of H2O 0.5227620798 609060.485420639

7593620.495128015

410972 0.501
Average Stack Gas Velocity, feet/second 47.95 46.84 46.91 47.233 Stack Cross-Sectional Area, square feet 562.001 562.001 562.001 562.001 Dry Volumetric Flow Rate, dry scfm 1,059,257.2 1,004,549.2 1,026,103.81,029,970.0 67 Actual Wet Volumetric Flue Gas Flow Rate, acfm 1,616,876.9 1,579,447.6 1,581,808.01,592,710.8 33 Percent Isokinetic of Sampling Rate, % 98.3 98.3 98.8 98.467 Percent Excess Air, % 88.9 85.4 92.5 88.933 F-Factor, dscfm/MMBtu @ %O2 9190 9190 9190 9,190.000 Round Duct Diameter, inches 321 321 321 Rectangular Duct Width, inches 0 0 0 Rectangular Duct Length, inches 0 0 0 Fw 10320 10320 1032010,320.000 Fc 1420 1420 1420 1,420.000



### Thursday, January 13, 2011 Page 29 of 35

### Utility Boiler MACT ICR - Yorktown Power Station Unit 3
10/18/2010
Location Stack Exit - Method 25A Average Run Number 1 2 3 Test Date 6/3/2010 6/3/2010 6/3/2010 Run Start Time 3:08:00 PM 5:49:00 PM 8:20:00 PM Run Finish Time 5:08:00 PM 7:49:00 PM10:20:00 PM Carbon Dioxide, % Oxygen, % 9.693 9.756 9.805 9.751 Fuel Factor 0 0 0 Dry Volumetric Flow Rate, dry scfm 0 0 0 0.000 F-Factor, dscfm/MMBtu @ %O2 9190 9190 9190 9,190.000 Moisture, % 9.41 9.41 9.3 9.373 Analyzer Make Analyzer Model Analyzer Serial Number Operating Range 0 0 0 0.000 Operating Units No. Readings/Avg. 0 0 0 0.000 Calibration Set 2 2 2 2.000 Calibration Pre Zero Cylinder ID CC149542 CC149542 CC149542 Calibration Pre Zero Cylinder Instrument Response 0.002 0.003 0.003 0.003 Calibration Pre Zero Cylinder Bias 0 0 0 0.000 Calibration Pre Zero Cylinder Drift 0 0 0 0.000 Calibration Pre High Cylinder ID CC178755 CC178755 CC178755 Calibration Pre High Cylinder Instrument Response 6.474 6.415 6.445 6.445 Calibration Pre High Cylinder Bias -1.44 -1.68 -1.56 -1.560 Calibration Pre High Cylinder Drift 0 0 0 0.000 Calibration Post Zero Cylinder ID CC149542 CC149542 CC149542 Calibration Post Zero Cylinder Instrument Response 0.003 0.003 0.002 0.003 Calibration Post Zero Cylinder Bias 0 0 0 0.000 Calibration Post Zero Cylinder Drift 0 0 0 0.000 Calibration Post High Cylinder ID CC178755 CC178755 CC178755 Calibration Post High Cylinder Instrument Response 6.415 6.445 6.413 6.424 Calibration Post High Cylinder Bias -1.68 -1.56 -1.69 -1.643 Calibration Post High Cylinder Drift 0.24 0.12 0.13 0.163 Cavg 0.003 0.007 0.045 0.018 Cavg Units ppmvw ppmvw ppmvw Cgas 0.0006 0.0048 0.051 0.019 Cgas Units ppmvd ppmvd ppmvd Fuel Type Oil Oil Oil Fw 10320 10320 1032010,320.000 Fc 1420 1420 1420 1,420.000 Cgasw 5.4338714684 8805E-044.357242881

59328E-034.629930755

46565E-02 0.017
Cgasw Units ppmvw ppmvw ppmvw



### Thursday, January 13, 2011 Page 30 of 35

### Utility Boiler MACT ICR - Yorktown Power Station Unit 3
10/18/2010
Location Stack Exit - Method 26A Average Run Number 1 2 3 Test Date 6/4/2010 6/4/2010 6/5/2010 Run Start Time Run Finish Time Net Traversing Points 24 24 24 Net Run Time, minutes 60 60 60 Nozzle Diameter, inches 0.281 0.281 0.281 0.281 Pitot Tube Coefficient 0.84 0.84 0.84 0.840 Dry Gas Meter Calibration Factor 0.9873 0.9873 0.9873 0.987 Barometric Pressure, inches of Mercury 29.4 29.4 29.4 29.400 Average Orifice Meter Differential, inches H2O 2.24 2.23 2.22 2.230 Dry Gas Meter Volume Sampled, cubic feet 52.079 51.942 51.709 51.910 Average Dry Gas Meter Temperature, °F 93.31 92.35 89.73 91.797 Dry Gas Meter Volume Sampled, dscf 48.483 48.438 48.450 48.457 Total Moisture Liquid collected, g 122.4 116.9 123.1 120.800 Volume of Water Vapor, standard cubic feet 5.76 5.50 5.79 5.683 Moisture Content of Stack Gas, % 10.62 10.20 10.67 10.497 Moisture Saturation at Stack Gas Temperature, % 100.00 100.00 100.00 100.000 Dry Mole Fraction 0.8938 0.898 0.8933 0.895 Carbon Dioxide, % 8.9 9 9 8.967 Oxygen, % 9.7 9.5 9.5 9.567 Carbon Monoxide & Nitrogen, % 81.4 81.5 81.5 81.467 Fuel Factor 1.26 1.27 1.27 Dry Molecular Weight, lb/lb-Mole 29.81 29.82 29.82 29.817 Wet Molecular weight, lb/lb-Mole 28.56 28.61 28.56 28.577 Flue Gas Static Pressure, inches of H2O -0.58 -0.6 -0.64 -0.607 Absolute Flue Gas Pressure, inches of Mercury 29.36 29.36 29.35 29.357 Average Stack Gas Temperature, °F 276.33 276.33 276.21 276.290 Average Velocity Head, inches of H2O 0.5280286563 045410.526506308

9351010.522624963

229401 0.526
Average Stack Gas Velocity, feet/second 48.90 48.79 48.65 48.780 Stack Cross-Sectional Area, square feet 562.001 562.001 562.001 562.001 Dry Volumetric Flow Rate, dry scfm 1,037,035.1 1,039,564.4 1,030,972.91,035,857.4 67 Actual Wet Volumetric Flue Gas Flow Rate, acfm 1,648,910.9 1,645,201.7 1,640,480.91,644,864.5 00 Percent Isokinetic of Sampling Rate, % 101.7 101.3 102.2 101.733 Percent Excess Air, % 82.3 79.1 79.1 80.167 F-Factor, dscfm/MMBtu @ %O2 9190 9190 9190 9,190.000 Round Duct Diameter, inches 321 321 321 Rectangular Duct Width, inches 0 0 0 Rectangular Duct Length, inches 0 0 0 Fw 10320 10320 1032010,320.000 Fc 1420 1420 1420 1,420.000



### Thursday, January 13, 2011 Page 31 of 35

### Utility Boiler MACT ICR - Yorktown Power Station Unit 3
10/18/2010
Location Stack Exit - Method 29 Average Run Number 1 2 3 Test Date 6/3/2010 6/3/2010 6/4/2010 Run Start Time Run Finish Time Net Traversing Points 48 48 48 Net Run Time, minutes 240 240 240 Nozzle Diameter, inches 0.258 0.258 0.277 0.264 Pitot Tube Coefficient 0.84 0.84 0.84 0.840 Dry Gas Meter Calibration Factor 0.9942 0.9942 0.9942 0.994 Barometric Pressure, inches of Mercury 29.8 29.6 29.84 29.747 Average Orifice Meter Differential, inches H2O 1.68 1.62 2.21 1.837 Dry Gas Meter Volume Sampled, cubic feet 171.684 164.914 198.907 178.502 Average Dry Gas Meter Temperature, °F 96.21 88.29 101.25 95.250 Dry Gas Meter Volume Sampled, dscf 162.050 156.830 186.551 168.477 Total Moisture Liquid collected, g 357 341 419.2 372.400 Volume of Water Vapor, standard cubic feet 16.80 16.05 19.73 17.527 Moisture Content of Stack Gas, % 9.39 9.28 9.56 9.410 Moisture Saturation at Stack Gas Temperature, % 100.00 100.00 100.00 100.000 Dry Mole Fraction 0.9061 0.9072 0.9044 0.906 Carbon Dioxide, % 8.89 8.827 8.793 8.837 Oxygen, % 9.725 9.848 9.862 9.812 Carbon Monoxide & Nitrogen, % 81.385 81.325 81.345 81.352 Fuel Factor 1.26 1.25 1.26 Dry Molecular Weight, lb/lb-Mole 29.81 29.81 29.80 29.807 Wet Molecular weight, lb/lb-Mole 28.70 28.71 28.67 28.693 Flue Gas Static Pressure, inches of H2O -0.63 -0.59 -0.68 -0.633 Absolute Flue Gas Pressure, inches of Mercury 29.75 29.56 29.79 29.700 Average Stack Gas Temperature, °F 276.25 273.10 274.50 274.617 Average Velocity Head, inches of H2O 0.5312390808 577530.520303978

5565720.525320639

177791 0.526
Average Stack Gas Velocity, feet/second 48.60 48.14 48.27 48.337 Stack Cross-Sectional Area, square feet 562.001 562.001 562.001 562.001 Dry Volumetric Flow Rate, dry scfm 1,058,850.7 1,047,878.7 1,053,603.61,053,444.3 33 Actual Wet Volumetric Flue Gas Flow Rate, acfm 1,638,794.9 1,623,283.7 1,627,667.31,629,915.3 00 Percent Isokinetic of Sampling Rate, % 98.7 96.5 99.1 98.100 Percent Excess Air, % 82.7 84.7 84.9 84.100 F-Factor, dscfm/MMBtu @ %O2 9190 9190 9190 9,190.000 Round Duct Diameter, inches 321 321 321 Rectangular Duct Width, inches 0 0 0 Rectangular Duct Length, inches 0 0 0 Fw 10320 10320 1032010,320.000 Fc 1420 1420 1420 1,420.000



### Thursday, January 13, 2011 Page 32 of 35

### Utility Boiler MACT ICR - Yorktown Power Station Unit 3
10/18/2010
Location Stack Exit - Method 6C Average Run Number 1 2 3 Test Date 6/3/2010 6/3/2010 6/3/2010 Run Start Time 3:08:00 PM 5:49:00 PM 8:20:00 PM Run Finish Time 5:08:00 PM 7:49:00 PM10:20:00 PM Carbon Dioxide, % 8.94 8.883 8.858 8.894 Oxygen, % 9.693 9.756 9.805 9.751 Fuel Factor 1.25 1.25 1.25 Dry Volumetric Flow Rate, dry scfm 0 0 0 0.000 F-Factor, dscfm/MMBtu @ %O2 9190 9190 9190 9,190.000 Moisture, % 0 0 0 0.000 Analyzer Make Analyzer Model Analyzer Serial Number Operating Range 0 0 0 0.000 Operating Units No. Readings/Avg. 0 0 0 0.000 Calibration Set 3 3 3 3.000 Calibration Pre Zero Cylinder ID CC149542 CC149542 CC149542 Calibration Pre Zero Cylinder Instrument Response 0.04 -0.9 -0.4 -0.420 Calibration Pre Zero Cylinder Bias 0.17 -0.04 0.07 0.067 Calibration Pre Zero Cylinder Drift 0 0 0 0.000 Calibration Pre High Cylinder ID CC301684 CC301684 CC301684 Calibration Pre High Cylinder Instrument Response 432.6 431.46 435.45 433.170 Calibration Pre High Cylinder Bias -3.54 -3.8 -2.91 -3.417 Calibration Pre High Cylinder Drift 0 0 0 0.000 Calibration Post Zero Cylinder ID CC149542 CC149542 CC149542 Calibration Post Zero Cylinder Instrument Response -0.9 -0.4 0.3 -0.333 Calibration Post Zero Cylinder Bias -0.04 0.07 0.22 0.083 Calibration Post Zero Cylinder Drift 0.21 0.11 0.15 0.157 Calibration Post High Cylinder ID CC301684 CC301684 CC301684 Calibration Post High Cylinder Instrument Response 431.46 435.45 438.15 435.020 Calibration Post High Cylinder Bias -3.8 -2.91 -2.31 -3.007 Calibration Post High Cylinder Drift 0.26 0.89 0.6 0.583 Cavg 320.46 316.76 319.37 318.863 Cavg Units ppmvd ppmvd ppmvd Cgas 333.4597 328.5934 328.5964 330.217 Cgas Units ppmvd ppmvd ppmvd Fuel Type Oil Oil Oil Fw 10320 10320 1032010,320.000 Fc 1420 1420 1420 1,420.000 Cgasw 0 0 0 0.000 Cgasw Units



### Thursday, January 13, 2011 Page 33 of 35

### Utility Boiler MACT ICR - Yorktown Power Station Unit 3
10/18/2010
Location Stack Exit - Method 7E Average Run Number 1 2 3 Test Date 6/3/2010 6/3/2010 6/3/2010 Run Start Time 3:08:00 PM 5:49:00 PM 8:20:00 PM Run Finish Time 5:08:00 PM 7:49:00 PM10:20:00 PM Carbon Dioxide, % 8.94 8.883 8.858 8.894 Oxygen, % 9.693 9.756 9.805 9.751 Fuel Factor 1.25 1.25 1.25 Dry Volumetric Flow Rate, dry scfm 0 0 0 0.000 F-Factor, dscfm/MMBtu @ %O2 9190 9190 9190 9,190.000 Moisture, % 0 0 0 0.000 Analyzer Make Analyzer Model Analyzer Serial Number Operating Range 0 0 0 0.000 Operating Units No. Readings/Avg. 0 0 0 0.000 Calibration Set 4 5 5 4.667 Calibration Pre Zero Cylinder ID CC149542 CC149542 CC149542 Calibration Pre Zero Cylinder Instrument Response 0.64 0.96 0.88 0.827 Calibration Pre Zero Cylinder Bias -0.04 0.02 0 -0.007 Calibration Pre Zero Cylinder Drift 0 0 0 0.000 Calibration Pre High Cylinder ID CC25147 CC25147 CC25147 Calibration Pre High Cylinder Instrument Response 430.35 432.16 429.18 430.563 Calibration Pre High Cylinder Bias -3.12 -2.71 -3.38 -3.070 Calibration Pre High Cylinder Drift 0 0 0 0.000 Calibration Post Zero Cylinder ID CC149542 CC149542 CC149542 Calibration Post Zero Cylinder Instrument Response 0.6 0.88 0.64 0.707 Calibration Post Zero Cylinder Bias -0.05 0 -0.05 -0.033 Calibration Post Zero Cylinder Drift 0.01 0.02 0.05 0.027 Calibration Post High Cylinder ID CC25147 CC25147 CC25147 Calibration Post High Cylinder Instrument Response 422.05 429.18 426.16 425.797 Calibration Post High Cylinder Bias -5 -3.38 -4.06 -4.147 Calibration Post High Cylinder Drift 1.88 0.67 0.68 1.077 Cavg 76.83 85.45 86.47 82.917 Cavg Units ppmvd ppmvd ppmvd Cgas 79.1862 86.9789 88.7797 84.982 Cgas Units ppmvd ppmvd ppmvd Fuel Type Oil Oil Oil Fw 10320 10320 1032010,320.000 Fc 1420 1420 1420 1,420.000 Cgasw 0 0 0 0.000 Cgasw Units



### Thursday, January 13, 2011 Page 34 of 35

### Utility Boiler MACT ICR - Yorktown Power Station Unit 3
10/18/2010
Location Stack Exit - OTM - 27/28 Average Run Number 1 2 3 Test Date 6/2/2010 6/2/2010 6/3/2010 Run Start Time Run Finish Time Net Traversing Points 12 12 12 Net Run Time, minutes 155.75 153.25 135.5 Nozzle Diameter, inches 0.187 0.186 0.187 0.187 Pitot Tube Coefficient 0.84 0.84 0.84 0.840 Dry Gas Meter Calibration Factor 0.9942 0.9942 0.9942 0.994 Barometric Pressure, inches of Mercury 30.09 30.19 29.2 29.827 Average Orifice Meter Differential, inches H2O 0.47 0.45 0.47 0.463 Dry Gas Meter Volume Sampled, cubic feet 60.453 59.526 52.213 57.397 Average Dry Gas Meter Temperature, °F 91.42 85.83 85.50 87.583 Dry Gas Meter Volume Sampled, dscf 57.943 57.827 49.094 54.955 Total Moisture Liquid collected, g 120 126.1 110 118.700 Volume of Water Vapor, standard cubic feet 5.65 5.94 5.18 5.590 Moisture Content of Stack Gas, % 8.88 9.32 9.54 9.247 Moisture Saturation at Stack Gas Temperature, % 100.00 100.00 100.00 100.000 Dry Mole Fraction 0.9112 0.9068 0.9046 0.908 Carbon Dioxide, % 8.66 8.22 8.38 8.420 Oxygen, % 10.01 10.68 10.44 10.377 Carbon Monoxide & Nitrogen, % 81.33 81.1 81.18 81.203 Fuel Factor 1.26 1.24 1.25 Dry Molecular Weight, lb/lb-Mole 29.79 29.74 29.76 29.763 Wet Molecular weight, lb/lb-Mole 28.74 28.65 28.64 28.677 Flue Gas Static Pressure, inches of H2O -0.7 -0.75 -0.75 -0.733 Absolute Flue Gas Pressure, inches of Mercury 30.04 30.13 29.14 29.770 Average Stack Gas Temperature, °F 273.92 274.00 270.92 272.947 Average Velocity Head, inches of H2O 0.5935267396 96760.562504006

5475320.574619125

506651 0.577
Average Stack Gas Velocity, feet/second 51.01 49.66 50.94 50.537 Stack Cross-Sectional Area, square feet 562.001 562.001 562.001 562.001 Dry Volumetric Flow Rate, dry scfm 1,132,089.9 1,099,972.9 1,093,190.61,108,417.8 00 Actual Wet Volumetric Flue Gas Flow Rate, acfm 1,720,060.3 1,674,538.2 1,717,699.91,704,099.4 67 Percent Isokinetic of Sampling Rate, % 96.8 102.2 97.7 98.900 Percent Excess Air, % 87.3 99.5 95.0 93.933 F-Factor, dscfm/MMBtu @ %O2 9190 9190 9190 9,190.000 Round Duct Diameter, inches 321 321 321 Rectangular Duct Width, inches 0 0 0 Rectangular Duct Length, inches 0 0 0 Fw 10320 10320 1032010,320.000 Fc 1420 1420 1420 1,420.000



### Thursday, January 13, 2011 Page 35 of 35