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 13
Facility Information:

Plant Scherer Unit 4

10986 Highway 87

Juliette Ga 31046

Contact: Sarah Markham

Phone: 205-257-6780

Fax: 205-257-2988

Email: sasander@southernco.com

Testing Company:

Weston Solutions

1625 Pumphrey Ave

Auburn Al 36832

Contact:Jon Howard

Phone: 334-466-5600

Fax: 334-466-5660

Email:

Air Permit Number: Permitted Source ID/Name:

4 Unit 4

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

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 324 0 0 0 8148 3852 4 12

Target

Parameter 

Test

Method

Number of

Test Runs

Test Run

Duration

Sample 

Location Points Comments

Stack Flowrate Method 1 - 4 3 0

Stack % H2O Method 1 - 4 3 0

Stack Carbon Monoxide Method 10 3 0

Stack Formaldehyde Method 0011 3 0

Total organic compounds 

(TOC) as Propane

Stack Method 25A 3 0

Stack O2 Method 3A O2 3 0

Stack Co2 Method 3A CO2 3 0

Monday, February 07, 2011 Page 2 of 13
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.

-It is theorized that issues associated with the VOST analysis were due to high native source concentrations of 

Sulfur Dioxide (SO2). Specific issues are listed in the “General Comments” section of the Maxxam Analytics test 

report, Appendix D of the attached test report.

Maxxam Analytics comments:

-The samples (VOST) exhibited extremely high levels of non-target compounds, mainly siloxanes, based on 

standards calibration criteria and response factors within the GC/MS, which caused the following to occur within the 

analytical sequence(s).

a)	The last internal standard (Bromofluorobenzene) failed for many of the samples

b)	Following completion of an analytical run, we were unable to rid the system of these non-target analytes, thus 

inducing possible carryover into the subsequent analytical run(s).

c)	We dismantled the desorber, rinsed, and baked it in a lab oven. Subsequent reinstallation of the hardware proved 

that residual amounts of the non-target analyte remained.

d)	Repeated step c) again and finally were able to get to “clean” and ready.

e)	Often difficult to meet the tuning criteria for the method and experienced huge losses of sensitivity on the system 

up to 2/3 of standard sensitivity.

f)	Often could not get continuing calibrations to pass after running samples and it took hours of running calibrations 

to get the system to pass the continuing calibration criteria.

- Speciated VOST runs 1-3: levels of MeCl2 were found in the sample blank and the run to run data appears to be 

related to a level of contamination.

- Semi-VOST runs 1-3: Bis (2-ethylheyl) phthalate, this compound is commonly found in plastics, it is not a 

common combustion product but an artifact of sample recovery or lab handling.

- Method 10 (CO): Stratification test not <10% of mean. Historical test data indicates this sampling location is 

minimally stratified. The variation in CO concentration due to process effects would not allow a representative 

stratification test.

- Method 25A (THC): Due to the very low levels found in the source gas a response time study would not be 

representative as written in the methods. 

- Method 25A The span gas values (low and mid) were not between method specified limits for percentage of 

achieved span concentration. Low span achieved 20%, method limits 25-35%. Mid span achieved 41%, method 

limits 45-55%.

- Method 18 (Methane): Due to low methane concentrations in the source sample, a bag stability study was 

performed in lieu of a recovery study. Subsequently, the data presented in the test report have not been corrected for 

the 70-130% spike recovery procedure.

-Method 18 - the instrument response for each injection was not within 5% of mean response for the instrument.

-Method 18 - A mid range calibration standard wasn't analyzed after all samples were run.

Monday, February 07, 2011 Page 3 of 13
Sampling / Stack Data Results Summary

Location Stack - Method 0011

Average

Run Number 1 2 3

Test Date 1/6/2010 1/7/2010 1/7/2010

Run Start Time

Run Finish Time

Net Run Time, minutes 120 120 120

Dry Gas Meter Volume Sampled, dscf 82.301 81.262 79.398 80.987

Moisture Content of Stack Gas, % 11.70 12.05 11.74 11.830

Moisture Saturation at Stack Gas Temperature, % 100.00 100.00 100.00 100.000

Carbon Dioxide, % 14.2 14.4 14.4 14.333

Oxygen, % 5.3 5.3 5.2 5.267

Average Stack Gas Temperature, °F 316.63 314.83 323.46 318.307

Dry Volumetric Flow Rate, dry scfm 2,003,050.9 1,969,173.2 1,928,338.6 1,966,854.23

3

Actual Wet Volumetric Flue Gas Flow Rate, acfm 3,460,407.9 3,407,503.8 3,362,157.5 3,410,023.06

7

Percent Isokinetic of Sampling Rate, % 100.6 101.1 100.8 100.833

F-Factor, dscfm/MMBtu @ %O2 9780 9780 9780 9,780.000

Fw 10640 0 0 3,546.667

Fc 1800 0 0 600.000

Location Stack - Method 10

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

Monday, February 07, 2011 Page 4 of 13
Location Stack - Method 25A

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 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

Monday, February 07, 2011 Page 5 of 13
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

Monday, February 07, 2011 Page 6 of 13
Emissions Summary

Process Run Data

Location: Stack - Method 0011

Compound: Formaldehyde

Average

RunNumber 1 2 3

Mass_mg 0.006 0.008 0.007 0.007

lb/mmBtuO2 2.11E-06 2.84E-06 2.53E-06 0.000

ppm 2.06E-03 2.78E-03 2.49E-03 0.002

ppm@7%O2 1.84E-03 2.48E-03 2.20E-03 0.002

Location: Stack - Method 10

Compound: Carbon Monoxide

Average

Run 1 2 3

lb/mmBtuO2 4.31E-02 9.25E-02 7.31E-02 0.070

ppm 4.52E+01 9.71E+01 7.73E+01 73.200

ppm@7%O2 4.03E+01 8.65E+01 6.84E+01 65.067

Location: Stack - Method 25A

Compound: Total organic compounds (TOC) as 

Average

Run 1 2 3

lb/mmBtuO2 3.40E-04 8.64E-05 0.00E+00 0.000

ppm 2.26E-01 5.76E-02 0.00E+00 0.095

ppm@7%O2 2.01E-01 5.13E-02 0.00E+00 0.084

Monday, February 07, 2011 Page 7 of 13
Process Run Data

APCD Run Data

Process Lab Run Data

Run Name Value UOM Comments

Target

Value

1 Gross Electric Output 8526 MW 0

2 Gross Electric Output 8331 MW 0

3 Gross Electric Output 8683 MW 0

Run Name Value UOM Comments

1 Coal Fuel Analysis 8526 Btu/lb

2 Coal Fuel Analysis 8507 Btu/lb

3 Coal Fuel Analysis 8507 Btu/lb

Monday, February 07, 2011 Page 8 of 13
Sampling / Stack Data Results Detail

Location Stack - Method 0011

Average

Run Number 1 2 3

Test Date 1/6/2010 1/7/2010 1/7/2010

Run Start Time

Run Finish Time

Net Traversing Points 25 25 25

Net Run Time, minutes 120 120 120

Nozzle Diameter, inches 0.189 0.189 0.189 0.189

Pitot Tube Coefficient 0.84 0.84 0.84 0.840

Dry Gas Meter Calibration Factor 0.972 0.972 0.972 0.972

Barometric Pressure, inches of Mercury 29.15 29.15 29.15 29.150

Average Orifice Meter Differential, inches H2O 1.63 1.57 1.51 1.570

Dry Gas Meter Volume Sampled, cubic feet 86.061 84.349 83.944 84.785

Average Dry Gas Meter Temperature, °F 65.00 61.06 70.65 65.570

Dry Gas Meter Volume Sampled, dscf 82.301 81.262 79.398 80.987

Total Moisture Liquid collected, g 231.70000000

0001

236.5000000

00001

224.3 230.833

Volume of Water Vapor, standard cubic feet 10.91 11.13 10.56 10.867

Moisture Content of Stack Gas, % 11.70 12.05 11.74 11.830

Moisture Saturation at Stack Gas Temperature, % 100.00 100.00 100.00 100.000

Dry Mole Fraction 0.883 0.8795 0.8826 0.882

Carbon Dioxide, % 14.2 14.4 14.4 14.333

Oxygen, % 5.3 5.3 5.2 5.267

Carbon Monoxide & Nitrogen, % 80.5 80.3 80.4 80.400

Fuel Factor 1.10 1.08 1.09

Dry Molecular Weight, lb/lb-Mole 30.48 30.52 30.51 30.503

Wet Molecular weight, lb/lb-Mole 29.02 29.01 29.04 29.023

Flue Gas Static Pressure, inches of H2O -4.1 -4.1 -4.1 -4.100

Absolute Flue Gas Pressure, inches of Mercury 28.85 28.85 28.85 28.850

Average Stack Gas Temperature, °F 316.63 314.83 323.46 318.307

Average Velocity Head, inches of H2O 2.1211528365

0888

2.060977258

78006

1.986349943

39521

2.056

Average Stack Gas Velocity, feet/second 100.73 99.19 97.87 99.263

Stack Cross-Sectional Area, square feet 572.555 572.555 572.555 572.555

Dry Volumetric Flow Rate, dry scfm 2,003,050.9 1,969,173.2 1,928,338.6 1,966,854.2

33

Actual Wet Volumetric Flue Gas Flow Rate, acfm 3,460,407.9 3,407,503.8 3,362,157.5 3,410,023.0

67

Percent Isokinetic of Sampling Rate, % 100.6 101.1 100.8 100.833

Percent Excess Air, % 33.2 33.3 32.4 32.967

F-Factor, dscfm/MMBtu @ %O2 9780 9780 9780 9,780.000

Round Duct Diameter, inches 324 324 324

Rectangular Duct Width, inches 0 0 0

Rectangular Duct Length, inches 0 0 0

Fw 10640 0 0 3,546.667

Fc 1800 0 0 600.000

Monday, February 07, 2011 Page 9 of 13
Location Stack - Method 10

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

Monday, February 07, 2011 Page 10 of 13
Location Stack - Method 25A

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

Monday, February 07, 2011 Page 11 of 13
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

Monday, February 07, 2011 Page 12 of 13
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

Monday, February 07, 2011 Page 13 of 13