### Name:

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

Monday, February 07, 2011 Page 1 of 7

### Facility Information:

Plant Bowen 317 Covered Bridge Rd. SW

Cartersville Ga30120 Contact:Sarah Markham Phone: 205-257-6780 Fax: Email: sasander@southernco.com Testing Company: Weston Solutions 1625 Pumphrey

Auburn AL36832 Contact:Jon Howard Phone:334-466-5600 Fax: 334-466-5660 Email:jon.howard@westonsolutions.com

Air Permit Number: Permitted Source ID/Name: Unit 2 2BLR Permitted Maximum Process Rate:Max. Normal Operation Process Rate: Target Process Test Rat

Description of the source (including control equipment). Please see the attachments for source or process flow diagram: See Attached Report

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. Industry/SCC/NAIS

Sampling Location Information:

Test Parameter Information: AFS #: FRS #:

SCC / Description

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 372.1 8148 3852 4 0 12 0 0

Target Parameter Test Method Number of

Test Runs Test Run

Duration Sample

Points Comments Location Flowrate Method 1 - 4 3 0 Stack % H2O Method 1 - 4 3 0 Stack Hydrogen Fluoride Method 26A 3 0 Stack Hydrogen Chloride Method 26A 3 0 Stack



### Monday, February 07, 2011 Page 2 of 7

### -Method 26A /CTM-033 - The laboratory analysis for HCl and HF was completed in accordance with Method 26A

procedures and no analytical issues were encountered. During the time of sampling the normality of the NaOH impingers for HCN adsorption was not adjusted to maintain a pH above 12 through each test run. Although the test runs were conducted within method guidelines EPA issued guidance suggesting these modifications be made to maintain desired pH levels above 12. Furthermore, near the time of this test event or shortly after EPA posted to the ICR FAQS page that HCl/HF/HCN test runs using Method 26A procedures should be reduced to one hour from the three-hour specification published in the original 114 letters. These tests were performed for three hours using the initial specifications. -The CO2 gases near 13% within each source gas stream exhaust the adsorption potential of the NaOH solution and therefore some measurable levels of HCN may be passed through the solutions when present. HCN results seen at subsequent units at other Southern Company plants firing similar coal showed conclusively that HCN levels were DL. As a result, these test were qualified for HCl and HF and were not reported for HCN. -CTM-033 - Reference method requires a matrix spike, but this was not performed. - Please also note that the values presented in this database and the values in the hard copy report will vary slightly. We expect these differences are due to the fact that the ERT database recalculates all values.

Monday, February 07, 2011 Page 3 of 7

### Monday, February 07, 2011 Page 4 of 7

### Sampling / Stack Data Results Summary

Location Stack - Method 26A Average Run Number 1 2 3 Test Date 2/23/2010 2/23/2010 2/23/2010 Run Start Time 8:21:00 AM1:30:00 PM 5:07:00 PM Run Finish Time 11:37:00 AM4:49:00 PM 8:25:00 PM Net Run Time, minutes 180 180 180 Dry Gas Meter Volume Sampled, dscf 121.654 122.189 121.479 121.774 Moisture Content of Stack Gas, % 12.95 13.07 12.97 12.997 Moisture Saturation at Stack Gas Temperature, % 11.69 11.53 11.68 11.633 Carbon Dioxide, % 11.1 10.9 9.6 10.533 Oxygen, % 7.8 7.5 7.6 7.633 Average Stack Gas Temperature, °F 118.75 118.25 118.72 118.573 Dry Volumetric Flow Rate, dry scfm 1,871,012.61,881,240.3 1,877,219.31,876,490.73 3 Actual Wet Volumetric Flue Gas Flow Rate, acfm 2,444,041.92,450,838.5 2,451,744.72,448,875.03 3 Percent Isokinetic of Sampling Rate, % 100.6 100.5 100.1 100.400 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



### Monday, February 07, 2011 Page 5 of 7

### Emissions Summary

Process Run Data Location: Stack - Method 26A Compound: Hydrogen Chloride Average RunNumber 1 2 3 Mass_mg 0.793 0.498 0.379 0.557 lb/mmBtuO2 2.24E-04 1.37E-04 1.06E-04 0.000 ppm 1.52E-01 9.50E-02 7.27E-02 0.107 

### Compound: Hydrogen Fluoride Average RunNumber 1 2 3 Mass_mg 0.11 0.122 0.0906 0.108 lb/mmBtuO2 3.11E-05 3.36E-05 2.53E-05 0.000 ppm 3.84E-02 4.24E-02 3.17E-02 0.038



### Monday, February 07, 2011 Page 6 of 7

### Process Run Data

APCD Run Data

Process Lab Run Data Run Name Value UOM Comments Target Value 1 Gross Electric Output 754.29 MW 0 2 Gross Electric Output 754.52 MW 0 3 Gross Electric Output 754.57 MW 0



### Run Name Value UOM Comments 1 Coal Fuel Analysis 12601 Btu/lb 2 Coal Fuel Analysis 12595 Btu/lb 3 Coal Fuel Analysis 12568 Btu/lb

Monday, February 07, 2011 Page 7 of 7

### Sampling / Stack Data Results Detail

Location Stack - Method 26A Average Run Number 1 2 3 Test Date 2/23/2010 2/23/2010 2/23/2010 Run Start Time 8:21:00 AM 1:30:00 PM 5:07:00 PM Run Finish Time 11:37:00 AM4:49:00 PM 8:25:00 PM Net Traversing Points 36 36 36 Net Run Time, minutes 180 180 180 Nozzle Diameter, inches 0.223 0.223 0.223 0.223 Pitot Tube Coefficient 0.84 0.84 0.84 0.840 Dry Gas Meter Calibration Factor 0.981 0.981 0.981 0.981 Barometric Pressure, inches of Mercury 28.45 28.45 28.45 28.450 Average Orifice Meter Differential, inches H2O 1.80 1.82 1.80 1.807 Dry Gas Meter Volume Sampled, cubic feet 138.200 139.302 138.581 138.694 Average Dry Gas Meter Temperature, °F 102.11 104.14 104.47 103.573 Dry Gas Meter Volume Sampled, dscf 121.654 122.189 121.479 121.774 Total Moisture Liquid collected, g 384.3 390.2 384.5 386.333 Volume of Water Vapor, standard cubic feet 18.09 18.37 18.10 18.187 Moisture Content of Stack Gas, % 12.95 13.07 12.97 12.997 Moisture Saturation at Stack Gas Temperature, % 11.69 11.53 11.68 11.633 Dry Mole Fraction 0.8831 0.8847 0.8832 0.884 Carbon Dioxide, % 11.1 10.9 9.6 10.533 Oxygen, % 7.8 7.5 7.6 7.633 Carbon Monoxide & Nitrogen, % 81.1 81.6 82.8 81.833 Fuel Factor 1.18 1.23 1.39 Dry Molecular Weight, lb/lb-Mole 30.09 30.04 29.84 29.990 Wet Molecular weight, lb/lb-Mole 28.90 28.93 28.69 28.840 Flue Gas Static Pressure, inches of H2O -0.3 -0.3 -0.3 -0.300 Absolute Flue Gas Pressure, inches of Mercury 28.43 28.43 28.43 28.430 Average Stack Gas Temperature, °F 118.75 118.25 118.72 118.573 Average Velocity Head, inches of H2O 0.8008988406 72830.806919230

5398340.800065856

141479 0.803 Average Stack Gas Velocity, feet/second 53.94 54.09 54.11 54.047 Stack Cross-Sectional Area, square feet 755.173 755.173 755.173 755.173 Dry Volumetric Flow Rate, dry scfm 1,871,012.6 1,881,240.3 1,877,219.31,876,490.7 33 Actual Wet Volumetric Flue Gas Flow Rate, acfm 2,444,041.9 2,450,838.5 2,451,744.72,448,875.0 33 Percent Isokinetic of Sampling Rate, % 100.6 100.5 100.1 100.400 Percent Excess Air, % 57.3 53.4 53.3 54.667 F-Factor, dscfm/MMBtu @ %O2 9780 9780 9780 9,780.000 Round Duct Diameter, inches 372.1 372.1 372.1 Rectangular Duct Width, inches 0 0 0 Rectangular Duct Length, inches 0 0 0 Fw 10640 10640 1064010,640.000 Fc 1800 1800 1800 1,800.000



### Monday, February 07, 2011 Page 8 of 7