# Results of theMarch 31-ApriI17, 2008 Temporary CEMSNitrogen Oxides Testing on thePelletInduratingFurnaceLine 1 (EU020) (Stacks SV021, 022, 023, 024) andPellet InduratingFurnaceLine3 (EU022) (Stacks SV029, 030, 031, 032) atHibbing Taconite CompanyLocatedinHibbing, Minnesota AQFileNumber541 AQFacility PennitNumber13700061-002 Prepared for Hibbing Taconite Company June2008

Preparedby BarrEngineering Company 4700 West 7th Street Minneapolis, MN55435-4803 Phone: (952) 

# 832-2600 Fax: (952) 

# 832-2601

# Results of theMarch 31-ApriI17, 2008 Temporary CEMSNitrogen Oxides Testing on thePelletInduratingFurnaceLine 1 (EU020) (Stacks SV021, 022, 023, 024) andPellet InduratingFurnaceLine3 (EU022) (Stacks SV029, 030, 031, 032) atHibbing Taconite Company LocatedinHibbing, Minnesota AQFileNumber541 AQFacility PermitNumber13700061-002 Prepared for Hibbing Taconite Company June2008



# BARR 4700 lV est 77th Street Minneapolis, MN55435 

## Phone: (952) 

## 832·2600 Fax: (952) 

## 832·2601

# Results of the March 31-April17, 2008 Temporary CEMS Nitrogen Oxides Testing on the Pellet Indurating Furnace Line 1 (EU020) (Stacks SV021 , 

# 022, 023, 024) and Pellet Indurating Furnace Line 3 (EU022) (Stacks SV029, 030, 031, 032) at Hibbing Taconite Company Located in Hibbing, Minnesota Table of Contents Reportcertification
....................................................................................................................................... 1 Certification ofsamplingprocedures:
............................................................................ 1 Certification ofAnalytical Procedures:
......................................................................... 1 Certification ofTestReportby Testing Company:........................................................ 1 Certification ofTestReport by Owner orOperatorofEmission Facility:
....................2 Executive summary.......................................................................................................................................3 Introduction
...................................................................................................................................................4 Results
...........................................................................................................................................................5 Process description
........................................................................................................................................6 Stacktestingprocedures and methods
..........................................................................................................7

# List of Figures Figure 1 Test PortLocations

- Pellet InduratingFurnaceLine 1and 3: Venturi Scrubbers (SV021-024, EU020), (SV029-032, EU022) Figure 2 Traverse Point Locations

- Pellet InduratingFurnace Line 1and 3: Venturi Scrubbers (SV021-024, EU020), (SV029-032, EU022)


# List of Appendices Appendix A Report Calculations and Nomenclature Appendix B Field Data Sheets Appendix C Instrument Output Appendix D Calibration Data Appendix E Cylinder Gas Certifications AppendixF StackTest Plan Appendix G Project Participants and Contact Information

11

# Re rt certification
Certification of sampling procedures: 

# I certify underpenalty oflaw that the sampling procedures were performed in accordance with the approved test plan and that the data presented in this test report are, to the best ofmy knowledge and belief, true, accurate, and complete. All exceptions are listed and explained below. Signature: TomLeier Air Quality Technician BarrEngineering Co.
Certification of Analytical Procedures: 

# Laboratory analytical procedures are not required for test Method 7E.
Certification of Test Report by Testing Company: 

# Date

I certify under penalty oflaw that this test report and all attachments were prepared under my direction or supervision in accordance with a system designed to assure that qualified personnel properly gathered and evaluated the test information submitted. Based on my inquiry ofthe person or persons who performed sampling and analysis relating to the performance test, the information submitted in this test report is, to the best ofmy knowledge and belief, true, accurate, and complete. Al7ptions are listed and expl ined below.

# /mt~ . Signature:

2369Cl5001 

# T:;n:;Kuchilski StackTesting Services Supervisor BarrEngineering Co. 

# 6 -13 --0[5 Date

1

## Certification of Test Report by Owner or Operator of Emission Facility: 

# I certify under penalty oflaw thatthe information submitted in thistest report accurately reflects the operating conditions atthe emission facility during this performance test and describes the date and nature ofall operational and maintenance activities that were performed on the process and control equipment duringthe month priorto the performance test. Based on my inquiry of the person or persons who performed the operational and maintenance activities, the information submitted in this test report is, to the best ofmy knowledge and belief, true, accurate, and complete. All exceptions are listed and explained below. Signature:

2369CI5001 

# Andrew S. McDowell Environmental Coordinator Hibbing Taconite Company

2

# Executive summa
BarrEngineering performed nitrogen oxides (NOx) emissions testing at Hibbing Taconite Company (HTC) located in Hibbing, Minnesotafrom March 31
- April 17, 2008. The Line 3 indurating furnace was tested March 31 to April 8, 2008. The Line 1indurating furnace was tested from April 9 to April 17,2008. The testing was performed in response to the Administrative Orderby Consent between the Minnesota Pollution Control Agency (MPCA) and Hibbing Taconite Company. The Administrative Order addresses the U.S. Environmental Protection Agency regulations on visibility impairmentfor Class I wilderness areas referred to as the Regional Haze Rule. The testing was performed to develop predictive equations for NOxemissions from each furnace line in lieu ofinstallation ofpermanent continuous emissions monitors. Valid one-hourNOx emission data points were collected as required in the Administrative Order. 151 hours ofvalid data was collected on Line 1and 154 hours on Line 3. NOxemissions were measured simultaneously from the four indurating furnace waste gas stacks at each furnace line. Testing was performed as required using method modifications defined in the test plan and test plan approval letter.

2369Cl5001 

# 3

# Introduction
BarrEngineering conducted nitrogen oxides (NOx) emissions testing at Hibbing Taconite Company located in Hibbing, Minnesota. The test was performed to evaluate the variability ofNOxemissions as itrelates to the normal operation oftaconiteproduction. The test simultaneously measured NOx emissions from the four indurating furnace waste gas stacks ofeach line. The Line 3indurating furnace was tested March 31 to April 8, 2008. The Line 1indurating furnace was tested from April 9 to April 17, 2008. The testing was performed in response to the Administrative Orderby Consentbetween the MPCA and Hibbing Taconite Company. The Administrative Order addresses the U.S. Environmental Protection Agency regulations on visibility impairmentfor Class I wilderness areas referred to as the Regional Haze Rule (40 CFR part 51.300-51.309). The rule identifies key pollutants that contribute to regional haze as particulate matter, sulfurdioxide (S02) and NOx. As an alternative to installing continuous emissions monitoring systems (CEMS) as a means ofmeasuring NOxemissions for the BestAchievable Retrofit Technology (BART), Hibbing Taconite Company has agreed to perform the testing as required in the Administrative Order and use the emissions data to develop predictive equations to estimate NOx emissions. A test plan dated March 11, 2008 was submitted to the Minnesota Pollution Control Agency (MPCA). A pretest meeting was held on March 27, 2008 with representatives ofHibbing Taconite Company, BarrEngineering and Andy Place ofthe MPCA. A copy ofthe test plan and the test plan approval letter issued on March 28, 2008 are provided in AppendixF. Testing was performed as required with method exceptions defined in the test plan and test plan approval letter. TomLeier ofBarrEngineering performed the NOxtesting and test data compilation. Andrea Hayden and JeffJones ofHibbingTaconite Company coordinated the test team and facility operations. The tests were not witnessed by a MPCArepresentative. A list ofproject participants is provided in Appendix G. During the test, the indurating furnaces were operated under normal operating conditions. Process conditions were varied for development ofpredictive NOx emission equations for each furnace line. Process data, operatingconditions and predictive equation calculationsresults are provided under separate cover submitted by Hibbing Taconite.

2369C15001 

# 4

# Results Testing ofHibbing Taconite Company'sline 3 pellet indurating furnace waste gas stacks began on March 31, 200S and continued until April S, 200S. A total of 154 valid one-hour data points were collected. Testing on Line 1indurating furnace waste gas stacks began on April 9, 200S and continued until April 17, 200S. A total of 151 valid one-hourdata points were collected. Data was considered valid when all four analyzers/systems were operating correctly and simultaneously. It was agreed in the MPCApretest meeting that forty-five minutes ofdata in an hour would be used to represent one hour ofvalid data. This allowed normal daily analyzer drift checks and systembias checks to be performed without omission ofdata provided the procedure could be completed in fifteen minutes. These events are identified in the data set. There were several significant interruptions ofdata collection due to a process interruptions and testing equipmentfailures. The primary problems with the test equipment were with the airflow measuring equipment. Several times moisture migrated into the pitot lines and froze giving false readings. Affected data was flagged when the problem appeared until the problem was corrected. Testing continued until in excess of 150 hours ofvalid data had been collected. Periods ofprocess upsets that invalidated data are identified in the dataset. Copies ofthe data files "Line 1NOx CEMS lb perhour4-9-0S to 4-17-OS.xls" and "Line 3 NOx CEMS lb per hour 3-31-0S to 4-S-0S" are provided on a CD with this report. These datasets contain all ofthe test data and emission rate calculations. The one-hourdata provided is calculated using fifteen-minute averages. Hard copies ofthe data were not printed due to the large volume ofdata. Hibbing Taconite'sprocess operations were within range ofnormal taconite production. Process operating conditions were varied to represent different operating scenarios and to provide input for predictive equations development.

2369Cl5001 

# 5

# Process description Hibbing Taconite Company (HTC) mines iron ore (magnetite) and produces taconite pellets that are shipped to steel producers for processing in blast furnaces. The emission sources tested capture the waste gases from the pellet indurating process. 

# Pelletizing Plant Concentrate slurry flows to the thickener after which limestone is added for compression strength. The moisture ofthe concentrate is reduced by disk filters and then mixed with bentonite and conveyed toballing drums. After leaving the balling drumthe green balls are discharged to aroll screen to control the pellet size. The green balls are transfened to an oscillating conveyor and then to a roll conveyorfor additional removal ofless than 1;4 

# inch material. The green balls are distributed evenly across the pallet cars, priorto their entry to the pelletfurnace. The pallet cars have a layer of fired pellets already on the bottom and sides ofthe carcalled a hearth layer. The hearth layer allows for even airflow through the pellet bed and acts as a bufferbetween the pallet car and the heat generated through the exothermic conversion ofmagnetite to hematite. There are three natural gas fired furnaces at HTC, Lines 1 and 2 (Phase I), 

# andLine 3 (Phase II). 

# The straightgrate furnaces at HTC have several distinct zones. The first two stages are updraft and downdraft drying zones. The next zones are the preheat zone and firing zone. The temperature climbs as the pellets pass through each zone reaching a peak in the firing zone, after which the pellets enter the after-firing zone where the conversion ofmagnetite to hematite is completed. The last two zones are cooling zones that allow the pellets to be discharged at a temperature ofaround 120 degrees Fahrenheit. Heated air discharged from the two cooling zones is recirculated to the first zones ofthe furnace for drying and preheating the green balls. Offgases from the furnaces are vented primarily through two ducts, the hood exhaust that handles the drying and recirculated cooling gases, and the windbox exhaustthat handles the preheat, firing, and after-firing gases. The windbox exhaustflows through a multiclone, which protects a downstreamfan, and then is combined with the hood exhaust steam in a common header. The exhaust gases are subsequently divided into four streams which lead tofour venturirod scrubbers and exhaust from individual stacks.

2369C15001 

# 6

# Stack testing procedures and methods
The testing was performed from ports meetingEPAMethod 1criteria. Testport location and full traverse drawings are provided in Figures 1 and 2. An initial airflow using an S-type pitot was performed using EPA Method 2 criteria at each stack. An S-typepitottube was fixed at the point in each stack mostrepresentative ofthe average differential pressure. A calibrated DwyerMagnesense gauge was used to read the differential pressure at this point. Calibrated type "K" thermocouples were positioned in the stackto measure stacktemperature. Calculations ofvolumetric airflow were made with fifteen-minute average data values for velocity pressure, temperature, barometric pressure, oxygen and carbon dioxide. Stackgas moisture was measured using an approximation method (wet bulb-dry bulb technique) from EPA Method 4. Moisture determinations were made at least daily or as process conditions changes warranted. Moisture values determined were applied through each condition. Static pressure at each stack was taken daily and for eachprocess change that was made. The oxygen and carbon dioxide concentrations ofthe stack gas were measured at four stacks continuously by EPAMethod 3A. Final oxygen and carbon dioxide results are bias corrected. Nitrogen oxides concentrations were determined using a modified EPAMethod 7E. Protocol 1gas standards were used for daily instrument calibration, systembias checks, and calibration drift checks. Analyzers were calibrated at the beginning ofeach furnace line test. Intermediate instrument calibration adjustments were not needed as drift and calibration errorremained within specifications ofthe method. The upper span limit used to calculate maximum drift and systembias was 513 ppm NOx·The MPCA agreedto accept data within 7.5 percent systembias error but application ofthat allowance was not needed. The systembias calibrations were performed at least once each day and these calibration results were used to bias correctthe raw NOx averages between calibration times. U. S. EPAtestMethods 1,2, 3A, 4 and 7E are found in 40 CFRPart 60, Appendix A. 

# Calibration documentation for the instruments is provided in AppendixD. Copies ofthe gas certification analysis for NOx, oxygen and carbon dioxide are provided in Appendix E. A Campbell Scientific CRIOOO with multiplex board data logger systemwas used to record the output signals from the differential pressure gauge (pitot), stack thermocouple, NOx, oxygen, carbon

2369C15001 

# 7

# dioxide concentrations and ambient temperature. The data logger was programmed to collect data every ten seconds and generate one-minute and fifteen-minute averages. Fourfifteen-minute averages were averaged to make one-hour averages. The one-hour averages are not always on the hour as problems were corrected as needed and data collection resumed as soon as possible. Ambient temperature was recorded continuously using a type K thermocouple located nearthe testing trailer. The data is provided in the Excel spreadsheet.

2369C15001 

# 8

# Figures

# 2 TEST PORTS @ 

# 90· 104.5" 

# n -t

rv185" 

# o

# -~ TESTING PLATFORM ELEVATION 

# t rv75'



# TEST PORT LOCATIONS HIBBING TACONITE COMPANY HIBBING, MINNESOTA FROM SCRUBBER



# PELLET INDURATING FURNACE LINE 1 AND 3: VENTURI SCRUBBERS (SV021-024, EU020), (SV029-032, EU022) NOT TO SCALE 

# FIGURE 1

# • • •



# • • 

# •

• • 

# •

NO. OF TEST PORTS 2 PORT LENGTH 10.50" PORT DIAMETER 6" NO. OF TRAVERSE POINTS 12 DUCT DIAMETER 104.50"



# TRAVERSE POINT LOCATIONS HIBBING TACONITE COMPANY HIBBING, MINNESOTA POINT INSERTION DEPTH IN " 1 4.55 2 15.30 3 30.92 4 73.58 5 89.20 

# 6 99.95



# PELLET INDURATING FURNACE LINE 1 AND 3: VENTURI SCRUBBERS (SV021-024, EU020), (SV029-032, EU022) NOT TO SCALE 

# FIGURE 2

# Appendices

# AppendixA ReportCalculationsandNOl1lenclature

# CalculationEquations

- EPA Methods 3A, 6C, 7E, 10, Modified 16AI16B
Systembias adjustment on source concentration indicatedbythe analyzer. 

# CpPfIl 

# where: 

# =

# (C -C) CiliA A 

### 0 

# C C III - 

### 0


# is the adjusted source concentration, ppm(dry) is the average concentrationindicatedbythe analyzer, ppm(dry) is the average ofthe initial and final systemcalibrationresponses ofthe zero gas, ppm is the average ofthe initial and final systemcalibrationresponses ofthe upscale gas, ppm is the certifiedconcentrationofthe upscale calibration gas, ppm Convert source concentrationinto emissionrate (lb/hr).

where: MWxCppIII 

# C 

# =



# (

;;;'/1) 24.04

E(tb/llr) 

# =(6.242

# x 10-8

# )x C( mg ) X 

# 60 X 

# Qd dscm 

# C( ilia) dsc:lI 

# lvIW



# 24.04 E(/b/IIIJ 

# 6.242xl0-8 

# Qd 60 amount ofcompound, byweight(mg), per dry standard cubic meter ofair is the molecular weight ofthe gaseous compound \V'here MW= 

# 64 S02 46 N02 

# 28 CO 34 TRS (Assume H2

# SMolecularWeight) is the molarvolume ofgas at 68 

# OF and 29.92 inHg, Llg-mole emissionrate ofgaseous compoundinpoundsperhour is the conversionfactor from mg/m3

# to lb/fe 

# flow rate ofdry

# gas at standard conditions in cubic feet perminute, dscfm is the conversionfactor from minutes to hours

W:\Business Units\EM\SubunitAdrnin\Technical & 

### Support Services\AIR SAMPLING\Ternplates\Reports\Equations\analyzereq.doc

# Emissionrate ofpounds perMMBhlheat input. E(tb!hr) E(ib/MMBlu) 

## = -----'----'---- 

# HeatInput(MMBhl/hr) HeatInput from operating data summary

W:\Business Units\EM\SubunitAdmin\Technical & 

### Support Services\AIR SAMPLING\Templates\Reports\Equations\analyzereq.doc

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# AppendixC Instrument Output

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# AppendixD CalibrationData

# BARR Engineering Company Project Sample Lac. Date Operators

Zero Gas Low-ranoe

Mid-range High-range Hibbing Taconite Furnace Une 1 Scrubber Stack 1-4 4/8/00 TYL Cylinder Serial No. CC176437 CC29081 CC86743 CC7380 CC28675 ANALYZER CALIBRATION DATA Certified Value 0.0 91.5 245 513 50.2 Note: Difference must be less than +1- 2 percent of span Stack 1 - NOx(1) Analyzer Analyzer Mod I SN 200 EH CylinderValue Calibration Analyzer Span: 513 Response Zero Gas 0 0.3 Low - Range 91.5 90.5 Mid - Range 245 244.0 High - Range 513 513.0 50.2 49.0 Stack 2 - NOX(2) Analyzer Analyzer Mod I SN 200 EH CylinderValue Calibration Analyzer Span: 513 Response Zero Gas 0 0.5 Low - Range 91.5 89.8 Mid - Range 245 244.0 High - Range 513 512.0 50.2 49.1 Stack 3 - NOx(3) Analyzer Analyzer Mod I SN 200 EI-I CylinderValue Calibration Analyzer Span: 513 Response Zero Gas 0 0.1 Low - Range 91.5 90.4 Mid - Range 245 244.0 High - Range 513 511.2 50.5 48.4 Stack 4 - NOx(4) Analyzer Analyzer Mod I SN 600CLD CylinderValue Calibralion Anatyzer Span: 513 Response Zero Gas 0 2.0 Low - Range 91.5 93.5 Mid - Range 245 247.1 High - Range 513 514.5 50.5 52.0 Absolute Difference

0.3 1.0 1.0 0 1.2 Absolute Difference

0.5 1.7 1.0 1 1.1 Absolute Differenco

0.1 1.1 1.0 1.8 2.1 Absolute Difference 2 2.0 2.1 

### 1.5 1.5 

### EPA METHOD 7E NOx CEMS ANALYZER CALIBRATION

Begin Calibration at 1908 N02check L1 L2 L3 L4

SYSTEM CALIBRATION BIAS AND DRIFT DATA: 46.4 ppm N02

### = 46 @1929 46 @1929 45 @1929 40.2 @1929

Une calibration @ 1930 Note: System Cal bias cannot exceed +1- 5 percent ofspan pre run period System Bias can not exceed +1- 7.5 percent at end ofperiod
Difference as



### %of Span

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0.10%) 0.33% 0.19% 0.19% 0.21% Difference as % ofSpan

0.02% 0.21% 0.19% 0.35% 0.41%) Difference as 

### °A) of Span

0,39(% O.391 }'(1 O.41 IXI 0,29% 0.29% Drift check exceeding 3% span requires recalibralion Initial Values 4/8/2008 Cylinder Analyzer Cal System Cal System Cal Response Value Response, Response, Cal. Bias STACKA(1) Time (sec) PPM PPM PPM % of Span Zero Gas 0.0 0.3 1.1 0.16% Upscale Gas 245 244.0 237.0 -1.36% 91.5 90.5 50.2 49.0 48.5 -0.10% Initial Values 4/8/2008 Cylinder Analyzer Cal System Cal System Cal Response Value Response, Response, Cal. Bias STACKB(2) Time (sec) PPM PPM PPM % of Span Zero Gas 0.0 0.5 0.7 0.04% Upscale Gas 245.0 244.0 239.0 -0.97% 91.5 89.8 50.2 49.1 48.6 -0.10% Initial Values 41812008 Cytinder Analyzer Cal System Cal System Cal Response Value Response, Response, Cal. Bias STACKC(3) Time (sec) PPM PPM PPM % ofSp_an Zero Gas 0.0 0.5 0.9 0.08% Upscale Gas 245 244 239.0 -0.97% 91.5 90.4 88.1 -0.45% Initial Values 4/8/2008 Cylinder Analyzer Cal System Cal System Cal Response Value Response, Response, Cal. Bias STACK D (4) Time (sec) PPM PPM PPM % of Span Zero Gas 0.0 2.0 2.0 O.DooA) Upscale Gas 245 247.1 242.0 -0.99% 91.5 93.5 89.6 -0.75% System Calibration Bias 

### =[(System Cal. Response - Analyzer Cal. Response) 

### ISpan] x 100 Drift

### =[(Final System Cal. Response -Initial System Cal Response) 

### ISpan] x 100 Final Values 4/9/2008 System Cal System Cal Drift, Response, Cal. Bias Percentof I

PPM % of Span span 0.3 0.00% -0.16% 235.8 -1.60% -0.23% 46.8 -0.43% -0.33% Final Values 4/9/2008 System Cal System Cal Drift, : Response, Cal. Bias Percent of

PPM % ofSpan span 0.9 0.08% 0,04 1 % 236.6 -"1.44% -0.47% 47.9 -0.23% -0.14% Final Values 419/2008 System Cal System Cal Drift, Response, Cal. Bias Percent of

PPM % of Span span 1.4 0.18% 0.10% 241.5 -0.49% 0.49%, 88.6 -0.35% 0.10% Final Values I 4/9/2008 System Cal System Cal Drift, Response, Cal. Bias Percent of !

PPM 

### % of Span span 1.8 -0.04% -0.04% ' 241.7 

### M1.051

### yo -0.05% 91.0 -0.49% 0.27% NOx 1934 015 1943 826 1946 021

1934 0·15 1943 026 1946 021

1952 832 1958 037 2005 835

1952 832 1958 837 2005 835

# BARR Engineering Company Project Sample Loc. Date Operators

Zero Gas Low-range

Mid-range High-range Hibbing Taconite Furnace Line 1 Scrubber Stack 1-4 

### 4/8/08 TYL Cylinder Serial No. CC176437 CC106732 CC62111

.- __ CC;28675

-- ANALYZER CALIBRATION DATA Certified Value 0.0 9.0 21.0 _50_.2
__ Note: Difference must be less than 

### +1- 2 percent ofspan Stack 1 - 02(1) Analyzer Analyzer Mod 

### I SN Model 200 Cylinder Value Calibration Analyzer Span: 21.0 Response Zero Gas 0.0 Low - Range 0 0.0 Mid - Range 8.98 9.0 Absolute Difference 0.0 0.0 0.0

_____ High - Raf)ge
___ ..__**~~** _,--2_1._0
__**.~** Stack 2 - 02(2) Analyzer Analyzer Mod 

### I SN Model 200 Cylinder Value Calibration Absolute Analyzer Span: 21 Response Difference Zero Gas 0 0.0 Low - Range 0 0.0 0.0 Mid - Range 8.98 9.0 0.0 High - Range 21 21.0 0 Stack 3 - 02(3) Analyzer Analyzer Mod 

### I SN Model 200 Cylinder Value Calibration Absolute Analyzer Span: 21 Response Difference Zero Gas 0 0 Low - Range 0 0.0 0.0 Mid - Range 8.98 9.2 0.2 High - ",ange 21

-----**21:~** -

### ~ .- Stack 4 02(4) Analyzer Analyzer Mod 

### I SN Model 200 CylinderValue Calibration Absolute Analyzer Span: 21 Response Difference Zero Gas 0 0 Low - Range 0 0.0 0.0 Mid - Range 8.98 9.0 0.0 High - Range 21 21.0 0 

### EPA METHOD 3A 

## Q CEMS ANALYZER CALIBRATION

Difference as



### %ofSpan !

0.00% 0.00% , 0.10% 0.00%
Difference as

% of Span

0.00% 0.00% 0.10% 0.00%
Difference as 

### % of Span

0.00% 

# I 0.00% 

# I 1.05%1 0.00% 

# _ .._---------_..._-- Difference as

% of Span

0.00% 

# I 0.00% 0.10% 0.00% 1919 start calibration

SYSTEM CALIBRATION BIAS AND DRIFT DATA: Note: System Cal bias cannot exceed 

### +1- 5 percent of span pre run period System Bias can not exceed +1- 7.5 percentat end ofperiod Drift check exceeding 3% span requires recalibration Stack 1 - 02(1) Initial Values Final Values 

### 4/8/2008 4/9/2008 Cylinder Analyzer Cal System Cal System Cal System Cal System Cal Response Value Response, Response, Cal. Bias Response, Cal. Bias STACI<A(l) Time (sec) PPM PPM PPM % ofSpan PPM % ofSpan Zero Gas 0.0 0.0 0.1 0.48% 0.1 0.48% Upscale Gas 21.0 21.0 20.8 -0.95% 20.8 -0.95%
Stack 2 - 02(2) Initial Values Final Values 

### 4/8/2008 4/9/2008 Cylinder Analyzer Cal System Cal System Cal System Cal System Cal Response Value Response, Response, Cal. Bias Response, Cal. Bias STACI< B (2) Time (sec) PPM PPM PPM 

### %ofSpan PPM 

### % of Span Zero Gas 0.0 0.0 0.1 0.48% 0.1 0.48% Upscale Gas 21.0 21.0 20.8 -0.95% 20.8 -0.95%
Staell 3 - 02(3) Initial Values Final Values 

### 4/8/2008 4/9/2008 Cylinder Analyzer Cal System Cal System Cal System Cal System Cal Response Value Response, Response, Cal. Bias Response, Cal. Bias STACK C (3) Time (sec) PPM PPM PPM 

### % ofSpan PPM 

### % ofSpan Zero Gas 0.0 0.0 0.1 0.48% 0.2 0.95%**lJPscaleG~** ---_..._---_
.. __**2_1.~**

### '---~

### -~-**~9.~~~** 20.8**~5%_** Stack 4 02(4) Initial Values Final Values 

### 4/8/2008 4/9/2008 Analyzer Cal System Cal System Cal System Cal System Cal Response Response, Response, Cal. Bias Response, Cal. Bias STACK 0 (4) Time (sec) PPM PPM 

### % ofSpan PPM % ofSpan Zero Gas 0 0.0 0.1 0.48% 0.1 0.48% Upscale Gas 21 21.0 20.8 -0.95'% 20.9 -0.48% System Calibration Bias 

### =[(System Cal. Response - Analyzer Cal. Response) 

### I Span] x 100 Drift 

### =[(Final System Cal. Response - Initial System Cal Response) 

### I Span] x 100 

### 0, Drift, Percent of

span 0.00% 0.00%

Drift, Percent of

span 0.00% 0.00%

Drift, Percent of

span 0.48%**_O.OO~**

Drift, Percent of

span 0.00% 0.48% 1934 815 1938 829

1934 815 1938 829

1957 832 2111 838

1952 832 2111 838

# BARR Engineering Company Project Sample Loc. Date Operators HibbingTaconite Furnace Line 1Scrubber Stack 1-4 418108 TYL Cylinder Serial No. Zero Gas CC176437 Low-range

Mid-ranqe CC62111 High-range CC106732
ANALYZER CALIBRATION DATA Note: Difference must be less than 

### +1- 2 percent ofspan Stack 1 - C02(1) Analyzer Mod 

### I SN Model 

### 200 CylinderValue Analyzer Span: 

### 9.0 Zero Gas 0.0 Low - Range 0 Mid - Range 5.05 High - Range 9.0 Stack 2 - C02(2) Analyzer Mod 

### I SN Model 200 Cylinder Value Analyzer Span: 8.95 Zero Gas 0 Low - Range 0 Mid - Range 5.05 High - Range 8.95 Stack 3 - C02(3) Analyzer Mod 

### I SN Model 200 CylinderValue Analyzer Span: 8.95 Zero Gas 0 Low - Ranqe 0 Mid - Range 5.05 High - Range 8.95 Stack 4 - C02(4) Analyzer Mod 

### I SN Model 200 Cylinder Value Analyzer Span: 8.95 Zero Gas 0 Low - Ranqe 0 Mid - Range 5.05 High - Range 8.95 Certified Value 0.0 5.05 9.0

Analyzer Calibration Absolute Response Difference

0.0 0.0 0.0 0.0 5.0 0.0 9.0 0.1 Analyzer Calibration Absolute Response Difference

0.0 0.0 0.0 0.0 5.0 0.0 9.0 0.05 Analyzer Calibration Absolute Response Difference

0.0 0 0.0 0.0 5.0 0.0 9.0 0.05 Analyzer Calibration Absolute Response Difference

0.0 0 0.0 0.0 5.0 0.0 9.0 0.05 

### EPA METHOD 3A CO2 

### CEMS ANALYZER CALIBRATION

Difference as



### %ofSpan

0.00% 0.00% 

### 0.56% 0.56%
Difference as 

### % ofSpan

0.00% 0.00% 0.56% 0.56'Vo
Difference as 

### % ofSpan

0.00% 0.00% 0.56% 0.56%
Difference as

% ofSpan

0.00% 0.00% 0.56% 0.56% SYSTEM CALIBRATION BIAS AND DRIFT DATA: Note: System Cal bias cannot exceed 

### +1- 5 percent ofspan pre run period System Bias can not exceed 

### +1- 7.5 percent at end of period Drift check exceeding 3% span requires recalibration Stack 1 - C02(1 ) Initial Values Final Values 4/8/2008 4/9/2008 Cylinder Analyzer Cal System Cal System Cal System Cal System Cal Response Value Response, Response, Cal. Bias Response, Cal. Bias STACKA 

### (1) Time (sec) PPM PPM PPM 

### % of Span PPM 

### % ofSpan Zero Gas 0.0 0.0 0.0 0.00% 0.0 0.00% Upscale Gas 5.05 5.0 4.9**-1~**

### ~ ... 

# ----=1. 12%_ 

# co, Stack 2 - C02(2) Initial Values Final Values 4/8/2008 4/9/2008 Cylinder Analyzer Cal System Cal System Cal System Cal System Cal Response Value Response, Response, Cal. Bias Response, Cal. Bias STACK B (2) Time (sec) PPM PPM PPM 

### % ofSpan PPM % ofSpan Zero Gas 0.0 0.0 0.0 0.00% 0.0 0.00% Upscale Gas 5.05 5.0 4.9 -1.12% 4,9 -1.12%
Stack 3 - C02(3) Initial Values Final Values 4/8/2008 4/9/2008 Cylinder Analyzer Cal System Cal System Cal System Cal System Cal Response Value Response, Response, Cal. Bias Response, Cal. Bias STACI< A (1) Time (sec) PPM PPM PPM 

### % ofSpan PPM 

### % ofSpan Zero Gas 0.0 0.0 0.0 0.00% 0.0 0.00% Upscale Gas 5.05 5.0 4.9**-~** 5.0
__ 0.00%
__ Stack 4 - C02(4) Initial Values Final Values 4/8/2008 4/9/2008 Cylinder Analyzer Cal System Cal System Cal System Cal System Cal Response Value Response, Response, Cal. Bias Response, Cal. Bias STACKA(1) Time (sec) PPM PPM PPM % ofSpan PPM % ofSpan Zero Gas 0.0 0.0 01 

### 1,12I

### X) 0.1 1.12% Upscale Gas 5.05 5.0 4.9 -1.12% 5.0 0.00% System Calibration Bias 

### =[(System Cal. Response - Analyzer Cal. Response) 

### I Span] x 100 Drift 

### =[(Final System Cal. Response -Initial System Cal Response) 

### I Span] x 100 Drift, Percent of

span 0.00%

_ 0.00°""-

Drift, Percent of

span 0.00% 0.00%

Drift, Percent of

span 0.00% 1.12%

Drift, Percent of

span 0.00% 1.12%, 1934 815 1938 829

1934 815 1938 829

1952 832 2010 838

1952 832 2010 838

# BARR Engineering Company Project Sample Loc. Date Operators

Zero Gas low-ranQe

Mid-range High-range Hibbing Taconite Furnace Line 1 Scrubber Stack 1-4 4/9/08 TYL Cylinder Serial No. CC176437 CC29081 CC86743 CC7380 CC28675 ANALYZER CALIBRATION DATA Certified Value 0.0 91.5 245 513 50.2
Note: Difference must be less than +1- 2 percent ofspan Stack 1 - NOx(1) Analyzer Analyzer Mod I SN 200 EH CylinderValue Calibration Analyzer Span: 513 Response Zero Gas 0 0.3 Low - RanQe 91.5 90.5 Mid - Range 245 244.0 High - Range 513 513.0 50.2 49.0 Stack 2 - NOx(2) Analyzer Analyzer Mod I SN 200 EH CylinderValue Calibration Analyzer Span: 513 Response Zero Gas 0 0.5 Low - Range 91.5 89.8 Mid - Range 245 244.0 High - Range 513 512.0 50.2 49.1 Stack 3 - NOx(3) Analyzer Analyzer Mod I SN 200 EH CylinderValue Calibration Analyzer Span: 513 Response Zero Gas 0 0.1 Low - Range 91.5 90.4 Mid - Range 245 244.0 High - Range 513 511.2 50.5 48.4 Stack 4 - NOx(4) Analyzer Analyzer Mod I SN 600CLD CylinderValue Calibration Analyzer Span: 513 Response Zero Gas 0 2.0 Low - Range 91.5 93.5 Mid - Range 245 247.1 High - Range 513 514.5 50.5 52.0 Absolute Difference

0.3 1.0 1.0 0 1.2 Absolute Difference

0.5 1.7 1.0 1 1.1 Absolute Difference

0.1 1.1 1.0 1.8 2.1 Absolute Difference 2 2.0 2.1 1.5 1.5 

### EPA METHOD 7E NOx CEMS ANALYZER CALIBRATION

SYSTEM CALIBRATION BIAS AND DRIFT DATA:

Note: System Cal bias cannot exceed +1- 5 percentof span. Drift cannot exceed +1-7.5 percent of span Difference as 'X) of Span

0.06% 0.19% 0.19% 0.00% 0.23% Difference as 

### [Yo of Span

0.10% 0.33% 0.19% 0.19% 0.21% Difference as (}h of Span

O.02 IYu 0.21% O.191X) 0,35%) 0.41%1 Difference as 

### %of Span

0.39% 0.39% 0.41% 0.29% 0.29% Initial Values 4/9/2008 Cylinder Analyzer Cal System Cal System Cal Response Value Response, Response, Cal. Bias STACI<A(1) Time (sec) PPM PPM PPM % ofSpan Zero Gas 0.0 0.3 0.3 0.00% Upscale Gas 245 244.0 91.5 90.5 50.2 49.0 46.8 -0.43% Initial Values 4/9/2008 Cylinder Analyzer Cal System Cal System Cal Response Value Response, Response, Cal. Bias STACK B(2) Timejsec) PPM PPM PPM 

### % of SRan Zero Gas 0.0 0.5 0.9 0.08% Upscale Gas 245.0 244.0 91.5 89.8 50.2 49.1 47.9 -0.23% Initial Values 4/9/2008 Cylinder AnalyzerCal System Cal System Cal Response Value Response, Response, Cal. Bias STACKC(3) Time (sec) PPM PPM PPM % of Span Zero Gas 0.0 0.5 1.4 0.18% Upscale Gas 245 244 241.5 -0.49% 91.5 90.4 Initial Values 4/9/2008 Cylinder Analyzer Cal System Cal System Cal Response Value Response, Response, Cal. Bias STACK D(4) Time(sec) PPM PPM PPM 

### % ofSRan Zero Gas 0.0 2.0 1.8 -0.04% Upscale Gas 245 247.1 241.7 -1.05% '---- 91.5 93.5

--- System Calibration Bias 

### = [(System Cal. Response - Analyzer Cal. Response) I Span] x 100 Drift 

### =[(Final System Cal. Response - Initial System Cal Response) 

### 1Span] x 100 Final Values 4/10/2008 System Cal System Cal Response, Cal. Bias

PPM 

### % of Span 0.7 0.08%
47.2 

### pO.35°AJ Final Values 4/10/2008 System Cal System Cal Response, Cal. Bias

PPM (Xl of Span 1.0 0.10%
48.6 -0.10% Final Values 4/10/2008 System Cal System Cal Response, Cal. Bias

PPM 

### % of Span 1.9 0.27% 240.0**~O,78{%** Final Values 4/10/2008 System Cal System Cal Response, Cal. Bias

PPM % of Span 1.8 -0.04% 241.9 -1.01%NOx Drift, Percent of

span 0.08% 815 800
0.08% 821 806
Drift, Percent of

span 0.02% 815 800
0.14% 821 806
Drift, Percent of

span O.101yo 832 817 -0.29% 837 823

Drift, Percent of

span 0.00% 832 817 0.04% 837 823

- --

# BARR Engineering Company Project Sample Loc, Date Operators

Zero Gas Low-ranQe

Mid-range High-range Hibbing Taconite Furnace Line 1 Scrubber Stack 1-4 4/9/08 TYL Cvlinder Serial No. CC176437 CC106732 CC62111
ANALYZER CALIBRATION DATA Certified Value 0.0 9.0 21.0

Note: Difference must be less than 

### +/- 2 percent of span Stack 1 - 02(1) Analyzer Analyzer Mod / SN Model 200 CylinderValue Calibration Analyzer Span: 21.0 Response Zero Gas 0.0 Low - Range 0 0,0 Mid - Range 8.98 9,0

____**Higl:l..:-_~nge** 

### ____ ---- 

### 21.0 21.0

--- 

### Stack 2 - 02(2) Analyzer Analyzer Mod/ SN Model 200 CylinderValue Calibration Analyzer Span: 21 Response Zero Gas 0 Low - RanrJe 0 0.0 Mid - Range 8.98 9,0 High - Range 21 21.0 Stack 3 - 02(3) Analyzer Analyzer Mod / SN Model 200 CylinderValue Calibration Analyzer Span: 21 Response Zero Gas 0 Low - Range 0 0.0 Mid - Range 8.98 9.2 High - Rang_e
____ 21


### ___ 21Q..
__ ------_ .._-- 

### Stack 402(4) Analyzer Analyzer Mod / SN Model 200 CylinderValue Calibration Analyzer Span: 21 Response Zero Gas 0 Low - RanQe 0 0.0 Mid - Range 8.98 9,0 High - Range 21 21,0 Absolute Difference 0.0 0.0 0.0 0.0
Absolute Difference 0,0 0,0 0.0 0
Absolute Difference 0 0.0 0,2

### ------~------- Absolute Difference 0 0,0 0,0 0 

### EPA METHOD 3A O2 

### CEMS ANALYZER CALIBRATION

Difference as



### % ofSpan

0.00% 0.00% 0.10% 0.00%

- --- 

### Difference as

% of Span

0.00% 0,00% 0,10% 0,00%
Difference as



### % ofSpan

0.00% 0.00% 1.05% 0.00%

- 

### Difference as



### % of Span

0,00% 0,00% 0.10% 0.00% SYSTEM CALIBRATION BIAS AND DRIFT DATA: Note: System Cal bias cannot exceed +/- 

### 5percent ofspan pre run period System Bias can not exceed +/- 

### 7,5 percentat end ofperiod Drift cheCk exceeding 3% span requires recalibration Stack 1 - 02(1) Initial Values Final Values 4/9/2008 4/10/2008 Cylinder Analyzer Cal System Cal System Cal System Cal System Cal Response Value Response, Response, Cal. Bias Response, Cal. Bias STACKA(1) Time (sec) PPM PPM PPM 

### % ofSpan PPM 

### % ofSpan Zero Gas 0.0 0.0 0,1 0.48% 0.1 0.48%**Upscale.C;a~** 

### 21,0 21,0 20,8 -0,95% 20.8 -0.95%

--- - -------- - ----- 

### Stack 2 - 02(2) Initial Values Final Values 4/9/2008 4/10/2008 Cylinder Analyzer Cal System Cal System Cal System Cal System Cal Response Value Response, Response, Cal. Bias Response, Cal. Bias STACK B (2) Time (sec) PPM PPM PPM % ofSpan PPM % of Span Zero Gas 0.0 0.0 0.1 0.48% 0,1 0.48% Upscale Gas 21.0 21,0 20.8 -0.95% 20.9 -0.48%
Stack 3 - 02(3) Initial Values Final Values 4/9/2008 4/10/2008 Cylinder Analyzer Cal System Cal System Cal System Cal System Cal Response Value Response, Response, Cal. Bias Response, Cal. Bias STACK C (3) Time (sec) PPM PPM PPM % of Span PPM 

### % of Span Zero Gas 0.0 0.0 0.2 0.95% 0.2 0.95%**~cale~** 

### 21.0 21.0 20,8
__**-().~5%_** 

### 20,8 -0.95%

----- ---- -- --- - 

### Stack 4 02(4) Initial Values Final Values 4/9/2008 4/10/2008 Analyzer Cal System Cal System Cal System Cal System Cal Response Response, Response, Cal. Bias Response, Cal. Bias STACI( D (4) Time (sec) PPM PPM 

### % of Span PPM 

### % of Span Zero Gas 0 0,0 0,1 0.48% 0.1 0.48% Upscale Gas 21 21.0 20.9 -0.48% 20,9 -0.48% System Calibration Bias 

### = [(System Cal. Response - Analyzer Cal. Response) / Span] x 100 Drift 

### = [(Final System Cal. Response - Initial System Cal Response)/ Span] x 100 

## O 2 

### Drift,

Percent of

span 0,00% 0.00%

Drift, Percent of

span 0.00% 0.48%

Drift, Percent of

span 0,00% 0.00%

-



### Drift, Percent of

span 0,00% 0.00% 815 800 829 814

815 800 829 814

832 817 838 824

832 817 838 824

# BARR Engineering Company Project Sample Loc. Date Operators

Zero Gas Low-ran!'Je

Mid-range High-range Hibbing Taconite Furnace Line 1 Scrubber Stack 1-4 4/9108 TYL Cylinder Serial No. CC176437 CC62111 CC106732
ANALYZER CALIBRATION DATA Certified Value 0.0 5.05 9.0

Note: Difference must be less than 

### +1- 2 percent ofspan Stack 1 - C02(1 ) Analyzer Analyzer Mod 

### I SN Model 200 Cylinder Value Calibration Analyzer Span: 9.0 Response Zero Gas 0.0 0.0 Low - Range 0 0.0 Mid - Range 5.05 5.0 High - Range 9.0 9.0 Stack 2 - C02(2) Analyzer Analyzer Mod 

### I SN Model 200 CylinderValue Calibration Analyzer Span: 8.95 Response Zero Gas 0 0.0 Low - Ranqe 0 0.0 Mid - Range 5.05 5.0 High-=-'3ange

- , 8.95

- 9.0

--- Stack 3 - C02(3) Analyzer Analyzer Mod 

### I SN Model 200 CylinderValue Calibration Analyzer Span: 8.95 Response Zero Gas 0 0.0 Low - RanQe 0 0.0 Mid - Range 5.05 5.0 High - Range 8.95 9.0 Stack 4 - C02(4) Analyzer Analyzer Mod 

### I SN Model 200 CylinderValue Calibration Analyzer Span: 8.95 Response Zero Gas 0 0.0 Low - RanQe 0 0.0 Mid - Range 5.05 5.0 Absolute Difference

0.0 0.0 0.0 0.1
Absolute Difference

0.0 0.0 0.0 0.05
Absolute Difference 0 0.0 0.0 0.05
Absolute Difference 0 0.0 0.0 

### EPA METHOD 3A CO2 

### CEMS ANALYZER CALIBRATION

SYSTEM CALIBRATION BIAS AND DRIFT DATA: Note: System Cal bias cannot exceed 

### +1- 5 percent ofspan pre run period System Bias can not exceed 

### +1- 7.5 percent at end ofperiod Drift check exceeding 3% span requires recalibration Stack 1 - C02(1 ) Initial Values Final Values Difference as 4/9/2008 4/10/2008 

### %ofSpan Cylinder Analyzer Cal System Cal System Cal System Cal System Cal Drift, Response Value Response, Response, Cal. Bias Response, Cal. Bias Percent of 0.00% STACKA(1) Time (sec) PPM PPM PPM 

### % ofSpan PPM 

### % ofSpan span 0.00% Zero Gas 0.0 0.0 0.0 0.00% 0.0 0.00% 0.00% 0.56% Upscale Gas 5.05 5.0 4.9 -1.12% 4.9 -1.12% 0.00% 0.56% CO2 Stack 2 - C02(2) Initial Values Final Values Difference as 4/9/2008 4/10/2008



### %ofSpan Cylinder Analyzer Cal System Cal System Cal System Cal System Cal Drift, Response Value Response, Response, Cal. Bias Response, Cal. Bias Percent of 0.00% STACK B (2) Time (sec) PPM PPM PPM % ofSpan PPM 

### % ofSpan span 0.00% Zero Gas 0.0 0.0 0.0 0.00% 0.1 1.12°1<, 1.12% 0.56% Upscale Gas 5.05 ,. 5.0 4.9 -1.12% 5.0 0.00')(, 1.12% 0.56%

- .- Stack 3 - C02(3) Initial Values Final Values Difference as 4/9/2008 4/10/2008 

### % ofSpan Cylinder Analyzer Cal System Cal System Cal System Cal System Cal Drift, Response Value Response, Response, Cal. Bias Response, Cal. Bias Percent of 0.00% 

# I STACKA(1) Time (sec) PPM PPM PPM 

### % ofSpan PPM 

### % ofSpan span 0.00% Zero Gas 0.0 0.0 0.0 0.00% 0.0 0.00% 0.00% 0.56% Upscale Gas 5.05 5.0 5.0 0.00% 5.0**~O%_**c...Jl.00% 0.56% 

## I Stack 4 - C02(4) Initial Values Final Values Difference as 4/9/2008 4/10/2008



### (X) of 

### Span Cylinder Analyzer Cal System Cal System Cal System Cal System Cal Drift, Response Value Response, Response, Cal. Bias Response, Cal. Bias Percent of 0.00% STACKA(1) Time (sec) PPM PPM PPM % ofSpan PPM % of Span span 0.00% Zero Gas 0.0 0.0 0.1 1.12% 0.0 Q,QQ1YtJ -1.12% 0.56% Upscale Gas 5.05 5.0 5.0
__**~,9_~_** 5.0 0.00% 0.00% High - Range

### ~ _'--

### ~**~~'--** Q.56% System Calibration Bias 

### = [(System Cal. Response - Analyzer Cal. Response) 

### I Span] x 100 Drift

# =[(Final System Cal. Response - Initial System Cal Response) I Span] x 100 815 800 829 814

815 800 829 814

832 817 838 824

832 817 838 824

# BARR Engineering Company Project Sample Loc. Date Operators

Zero Gas**Low-ran~e** Mid-rarlge High-range Hibbing Taconite Furnace Line 1 Scrubber Stack 1-4 4/10108

TYL Cylinder Serial No. CC176437 CC2908'1 CC86743 CC7380 CC28675 ANALYZER CALIBRATION DATA Certified Value 0.0 91.5 245 513 50.2
Note: Difference must be less than +1- 2 percent of span Stack 1 - NOx(1) Analyzer Analyzer Mod I SN 200 EH CylinderValue Calibration Analyzer Span: 513 Response Zero Gas 0 0.3 Low - Range 91.5 90.5 Mid - Range 245 244.0 High - Range 513 513.0 50.2 49.0 Stack 2 - NOx(2) Analyzer Analyzer Mod 1SN 200 EH CylinderValue Calibration Analyzer Span: 513 Response Zero Gas 0 0.5 Low - Ranoe 91.5 89.8 Mid - Range 245 244.0 High - Range 513 5"12.0 50.2 49.1 Stack 3 - NOx(3) Analyzer Analyzer Mod I SN 200 EH CylinderValue Calibration Analyzer Span: 513 Response Zero Gas 0 0.1 Low - Range 91.5 90.4 Mid - Range 245 244.0 High - Range 513 511.2 50.5 48.4 Stack 4 - NOx(4) Analyzer Analyzer Mod 1SN 600CLD CylinderValue Calibration Analyzer Span: 513 Response Zero Gas 0 2.0 Low - Range 91.5 93.5 Mid - Range 245 247.1 High - Range 513 514.5 50.5 52.0 Absolute Difference

0.3 1.0 1.0 0 1.2 Absolute Difference

0.5 1.7 1.0 1 1.1 Absolute Difference

0.1 1.1 1.0 1.8 2.1 Absolute Difference 2 2.0 2.1 1.5 1,5 

### EPA METHOD 7E NOx CEMS ANALYZER CALIBRATION

SYSTEM CALIBRATION BIAS AND DRIFT DATA: Note: System Cal bias cannot exceed +1- 5 percentofspan pre run period System Bias can not exceed +1- 7.5 percentat end of period
Difference as 

### (Xl of Span

0.06% 0.19% 0.19% 0.00% 0.23% Difference as % of Span

0.10% a.33Oft} 0.19% 0.19%) 0.21% Difference as % of Span

0.02% 0.21% 0:19% 

# I 0.35% 0.41% Difference as Oft) of Span

0.39% 0.39% 0,41 (Xl O.29tVtI 0.29% Drift check exceeding 3% span requires recalibration Initial Values 4110/2008 Cylinder Analyzer Cal System Cal System Cal Response Value Response, Response, Cal. Bias STACI<A(l) Time (sec) PPM PPM PPM % of Span Zero Gas 0.0 0.3 0.7 0.08% Upscale Gas 245 244.0 91.5 90.5 50.2 49.0 47.2 ·Q.35''l'o Initial Values 4/10/2008 Cylinder Analyzer Cal System Cal System Cal Response Value Response, Response, Cal. Bias STACI<B(2) Time (sec) PPM PPM PPM 

### % of Span Zero Gas 0.0 0.5 1.0 0.10% Upscale Gas 245.0 244.0 91.5 89.8 50.2 49.1 48.6 -0.10% Initial Values 4/1012008 Cylinder AnalyzerCal System Cal System Cal Response Value Response. Response, Cal. Bias STACI<C(3) Time (sec) PPM PPM PPM % of$pan Zero Gas 0.0 0.5 1.9 0.27% Upscale Gas 245 244 240.0 -0.78% 91.5 90.4 Initial Values 4/10/2008 Cylinder Analyzer Cal System Cal System Cal Response Value Response, Response, Cal. Bias STACI< 0 (4) Time (sec) PPM PPM PPM 

### %ofSpan Zero Gas 0.0 2.0 1.8 -0.04% Upscale Gas 245 247.1 241.9 -1.01% 91.5 93.5 System Calibration Bias 

### =((System Cal. Response - Analyzer Cal. Response)

### 1Span] x 100 Drift

### =((Final System Cal. Response -Initial System Cal Response) 1Span] x 100 Final Values 4/11/2008 System Cat System Cal Drift, Response, Cal. Bias Percent of

PPM 

### % of Span span 0.7 0.08% 0.00%
47.1 -0.37% -0.02% Final Values 4/11/2008 System Cal System Cal Drift. Response, Cal. Bias Percent of

PPM % of Span span 0.0 

### -O.10oAJ -0.19%
47.7 -0.27%1 -0.18% Final Values 4/11/2008 System Cal System Cal Drift, Response. Cal. Bias Percent of

PPM % of Span span 1.4 0.18% -0.10% 237.4 -1.29% -0.51%
Final Values 4/11/2008 System Cal System Cal Drift, Response, Cal. Bias Percent of

PPM ''leI of Span span 2.0 Q,aQuA) 0.04% 241.9 -1.01% O.Ooo/h NOx 800 933
806 936

800 933
806 936

817 948 823 95'1

817 948 823 951

# BARR Engineering Company Project Sample Loc. Date Operators Hibbing Taconite Furnace Line 1Scrubber Stack 1-4 4/10108

TYL Cvlinder Serial No. Certified Value Zero Gas CC176437 0.0 Low-range

Mid-range CC106732 9.0 High-range CC62111 21.0
ANALYZER CALIBRATION DATA Note: Difference must be less than 

### +1- 2 percent ofspan Stack 1 - 02(1) Analyzer Mod 

### 1SN Model 200 Analyzer Cylinder Value Calibration Analyzer Span: 21.0 Response Zero Gas 0.0 Low - Range 0 0.0 Mid - Range 8.98 9.0 High - Range 21.0 21.0 Stack 2 - 02(2) Analyzer Analyzer Mod 

### 1SN Model 200 CylinderValue Calibration Analyzer Span: 21 Response Zero Gas 0 Low - Range 0 0.0 Mid - Range 8.98 9.0 High - Range 21 21.0 Stacl, 3 - 02(3) Analyzer Analyzer Mod 1SN Model 200 Cylinder Value Calibration Analyzer Span: 21 Response Zero Gas 0 Low - Range 0 0.0 Mid - Range 8.98 9.2 Higl1_: Range

-- 

# -- 21

_ ___ 21.0 Stack 4 02(4) Analyzer Analyzer Mod 

### 1SN Model 200 CylinderValue Calibration Analyzer Span: 21 Response Zero Gas 0 Low - Range 0 0.0 Mid - Range 8.98 9.0 High - Range 21 21.0 Absolute Difference 0.0 0.0 0.0 0.0
Absolute Difference 0.0 0.0 0.0 0
Absolute Difference 0 0.0 0.2 0
Absolute Difference 0 0.0 0.0 0 

### EPA METHOD 3A

# q CEMS ANALYZER CALIBRATION

SYSTEM CALIBRATION BIAS AND DRIFT DATA: Note: System Cal bias cannot exceed 

### +1- 5 percentofspan pre run period System Bias can not exceed 

### +1- 7.5 percent at end of period Drift check exceeding 3% span requires recalibration Difference as



### %of Span

0.00% 0.00% 0.10% 0.00%
Difference as 

### % ofSpan

0.00% 0.00% 0.10% 0.00% 

# I Difference as % ofSpan 

## I

0.00% 

# I 0.00% 1.05%

### ~OO%.~ Difference as



### % of Span

0.00% 0.00% 0.10% 0.00% Stack 1 - 02(1) Initial Values Final Values 4/10/2008 4/11/2008 Cylinder Analyzer Cal System Cal System Cal System Cal System Cal Response Value Response, Response, Cal. Bias Response, Cal. Bias STACKA(1) Time (sec) PPM PPM PPM % of Span PPM 

### % ofSpan Zero Gas 0.0 0.0 0.1 0.48% 0.1 0048% Upscale Gas 21.0 21.0 20.8 -0.95% 20.6 -1.90%
Stack 2 - 02(2) Initial Values Final Values 4/10/2008 4/11/2008 Cylinder Analyzer Cal System Cal System Cal System Cal System Cal Response Value Response, Response, Cal. Bias Response, Cal. Bias STACK B (2) Time (sec) PPM PPM PPM % ofSpan PPM 

### % ofSpan Zero Gas 0.0 0.0 0.1 0048% 0.1 0048% Upscale Gas 21.0 21.0 20.9 -0048% 20.5 -2.38%
Stack 3 - 02(3) Initial Values Final Values 4/10/2008 4/11/2008 Cylinder Analyzer Cal System Cal System Cal System Cal System Cal Response Value Response, Response, Cal. Bias Response, Cal. Bias STACK C (3) Time (sec) PPM PPM PPM 

### % ofSpan PPM 

### % of Span Zero Gas 0.0 0.0 0.2 0.95% 0.2 0.95% Upsc;aleGas 21.0 

# _JJ.O_ 20.8 -0.95% 20.7 -1.43%**~** ...------..------.-.-**----~.----** . - - Stack 4 02(4) Initial Values Final Values 4/10/2008 4/11/2008 Analyzer Cal System Cal System Cal System Cal System Cal Response Response, Response, Cal. Bias Response, Cal. Bias STACI< D (4) Time (sec) PPM PPM 

### % ofSpan PPM 

### % ofSpan Zero Gas 0 0.0 0.1 0.48% 0.1 0.48% Upscale Gas 21 21.0 20.9 -0048% 20.6 -1.90% System Calibration Bias

# =[(System Cal. Response - Analyzer Cal. Response) 

### 1Span] x 100 Drift 

### =[(Final System Cal. Response - Initial System Cal Response) 

### 1Span] x 100 

### O 2 Drift,

Percent of

span 0.00% -0.95%

Drift, Percent of

span 0.00% -1.90%

Drift, Percent of

span 0.00% -0.48%

Drift, Percent of

span 0.00% -1043% 800 933 814 940

800 933 814 940

817 948 824 953



### 817 948 824 953

# BARR Engineering Company Project Sample Lac. Date Operators

Zero Gas Low-ranqe

Mid-range High-ran[Je Hibbing Taconite Furnace Line 1 Scrubber Stack 1-4 

### 4/10108

TYL Cylinder Serial No. CC176437 CC62111 CC106732
ANALYZER CALIBRATION DATA Certified Value 0.0 5.05 9.0

Note: Difference must be less than 

### +1- 2 percent ofspan Stack 1 - C02(1 ) Analyzer Analyzer Mod 

### 1SN Model 200 CylinderValue Calibration Analyzer Span: 9.0 Response Zero Gas 0.0 0.0 Low - Ranqe 0 0.0 Mid - Range 5.05 5.0
._-**Higl~ange** __ - 9.0

- _9.0
.. Stack 2 - C02(2) Analyzer Analyzer Mod 

### 1SN Model 200 CylinderValue Calibration Analyzer Span: 8.95 Response Zero Gas 0 0.0 Low - Ran[Je 0 0.0 Mid - Range 5.05 5.0

.--- High - Range
__ 8.95

__ 1
_____**~.O**______________ Stack 3 - C02(3) Analyzer Analyzer Mod 

### 1SN Model 200 Cylinder Value Calibration Analyzer Span: 8.95 Response Zero Gas 0 0.0 Low - Range 0 0.0 Mid - Range 5.05 5.0

-- High...:.B.ange

- . 8.95

- 9.0

-- Stack 4 - C02(4) Analyzer Analyzer Mod 

### 1SN Model 200 Cylinder Value Calibration Analyzer Span: 8.95 Response Zero Gas 0 0.0 Low - Range 0 0.0 Mid - Range 5.05 5.0 High - Range 8.95 9.0 Absolute Difference 0.0 0.0 0.0 0.1
Absolute Difference

0.0 0.0 0.0 

### EPA METHOD 3A CO2 

### CEMS ANALYZER CALIBRATION

SYSTEM CALIBRATION BIAS AND DRIFT DATA: Note: System Cal bias cannot exceed 

### +1- 5 percentofspan pre run period System Bias can not exceed 

### +1- 7.5 percent at end of period Drift check exceeding 3% span requires recalibration Stack 1 - C02(1 ) Initial Values Final Values Difference as 

### 4/10/2008 4/1112008 % of Span Cylinder Analyzer Cal System Cal System Cal System Cal System Cal Drift, Response Value Response, Response, Cal. Bias Response, Cal. Bias Percent of 0.00% STACI<A(l) Time (sec) PPM PPM PPM % ofSpan PPM 

### % ofSpan span 0.00% Zero Gas 0.0 0.0 0.0 0.00% 0.0 0.00% 0.00% 0.56% Ups<:ale Gas 

# , ...... 

# , 5.05
_ 5.0
. 4.9 -1.12% 4.8 -2.23% -1.12%

__ 0.56%**~** CO2 Stack 2 - C02(2) Initial Values Final Values Difference as 

### 4/10/2008 4/11/2008

% ofSpan Cylinder Analyzer Cal System Cal System Cal System Cal System Cal Drift, Response Value Response, Response, Cal. Bias Response, Cal. Bias Percent of 0.00% STACK B (2) Time (sec) PPM PPM PPM % ofSpan PPM 

### % ofSpan span 0.00% Zero Gas 0.0 0.0 0.1 1.12% 0.2 2.23% 1.12% 0.56%**~aleGas** 5.05

### ---~-~-~g-**.~** 0.00%
__ 5.1_ 1.12% 1.12%**~**__ 0.56%
Absolute Difference as Difference 

### % ofSpan 0 0.00% 

# I 0.0 0.00% 0.0 0.56% 0.05 0.56% ._- --- Absolute Difference as Difference % ofSpan 0 0.00% 0.0 0.00% 0.0 0.56% 0.05 0.56% Stack 3 - C02(3) Initial Values Final Values 

### 4/10/2008 4/11/2008 Cylinder Analyzer Cal System Cal System Cal System Cal System Cal Response Value Response, Response, Cal. Bias Response, Cal. Bias STACKA(l) Time (sec) PPM PPM PPM 

### % of Span PPM 

### % ofSpan Zero Gas 0.0 0.0 0.0 0.00% 0.0 0.00% Upscale Gas 5.05 

## . 5.0 5.0 0.00% 4.9 -1.12%
Stack4 - C02(4) Initial Values Final Values 

### 4/10/2008 4/11/2008 Cylinder Analyzer Cal System Cal System Cal System Cal System Cal Response Value Response, Response, Cal. Bias Response, Cal. Bias STACKA (1) Time (sec) PPM PPM PPM % ofSpan PPM 

### % ofSpan Zero Gas 0.0 0.0 0.0 0.00% 0.1 1.12% Upscale Gas 5.05 5.0 5.0 0.00% 4.9 -1.12% System Calibration Bias

### =[(System Cal. Response - Analyzer Cal. Response) 

### 1Span] x 100 Drift 

### = [(Final System Cal. Response - Initial System Cal Response) 

### 1Span] x 100 Drift, Percent of

span 0.00% -1.12%

Drift, Percent of

span 1.12% -1.12(Yt) 800 933 814 939

800 933 814 939

817 948 824 953

817 948 824 953

# BARR Engineering Company Project Sample Lac. Date Operators

Zero Gas Low-range

Mid-range High-range Hibbing Taconite Furnace Une 1 Scrubber Stack 1-4 4/11/08

TYL Cylinder Serial No. CC176437 CC29081 CC86743 CC7380 CC28675 ANALYZER CALIBRATION DATA Certified Value 0.0 91.5 245 513 50.2 Note: Difference must be less than +1- 2 percent ofspan Stack 1 - NOx(1) Analyzer Analyzer Mod 1SN 200 EH Cylinder Value Calibration Analyzer Span: 513 Response Zero Gas 0 0.3 Low - Ranoe 91.5 90.5 Mid - Range 245 244.0 High- Range 513 513.0 50.2 49.0 Stack 2 - NOx(2) Analyzer Analyzer Mod 1SN 200 EI-I CylinderValue Calibration Analyzer Span: 513 Response Zero Gas 0 0.5 Low - Range 91.5 89.8 Mid - Range 245 244.0 High - Range 513 512.0 50.2 49.1 Stack 3 - NOx(3) Analyzer Analyzer Mod 

### 1SN 200 EH CylinderValue Calibration Analyzer Span: 513 Response Zero Gas 0 0.1 Low - Ranoe 91.5 90.4 Mid - Range 245 244.0 High - Range 513 511.2 50.5 48.4 Stack 4 - NOx(4) Analyzer Analyzer Mod 

### 1SN 600CLD CylinderValue Calibration Analyzer Span: 513 Response Zero Gas 0 2.0 Low - Range 91.5 93,5 Mid - Range 245 247.1 I-ligh - Range 513 514.5 

### '--- 50,5 52.0 Absolute Difference

0.3 1.0 1.0 0 1.2 Absolute Difference

0,5 1.7 1.0 1 1.1 Absolute Difference

0.1 1.1 1.0 1.8 2.1 Absolute Difference 2 2,0 2.1 1,5 1,5 

### EPA METHOD 7E NOx CEMS ANALYZER CALIBRATION

SYSTEM CALIBRATION BIAS AND DRIFT DATA: Note: System Cal bias cannot exceed +1- 5 percent of span pre run period System Bias can not exceed +1- 7.5 percentat end ofperiod
Difference as % of Span

Q,06IX) 0.19% 0.19% 0.00% 0.23% Difference as % of Span

0.10% 0.33% O.19IM) 0.19% 

### Q,21 t

### XJ Difference as tyo of Span

0.02% 0.21% Q,19IX) 0,35% 0.41% Difference as ('leI of Span

0.39°h, 0,39% 0.41% 0,29% 0,29% Drift check exceeding 3% span requires recalibration Initial Values 4/11/2008 Cylinder Analyzer Cal System Cal System Cal Response Value Response, Response, Cal. Bias STACKA(1) Time (sec) PPM PPM PPM 

### %ofSpan Zero Gas 0,0 0.3 0.7 0,08% Upscale Gas 245 244.0 91.5 90,5 50.2 49,0 47,1 -0,37% Initial Values 4/11/2008 Cylinder Analyzer Cal System Cal System Cal Response Value Response, Response, Cal. Bias STACK B (2) Time (sec) PPM PPM PPM % of Span Zero Gas 0.0 0.5 0.0 -0,100;.. Upscale Gas 245,0 244,0 91.5 89.8 50.2 49,1 47,7 -0,27% Initial Values 4/11/2008 Cylinder Analyzer Cal System Cal System Cal Response Value Response, Response, Cal. Bias STACKC(3) Time (sec) PPM PPM PPM % of Span Zero Gas 0,0 0,5 1.4 0.18% Upscale Gas 245 244 237.4 -1,29%

.... 91,5 .• 90.4

..

## , ........ Initial Values 4/11/2008 Cylinder Analyzer Cal System Cal System Cal Response Value Response, Response, Cal. Bias STACK D(4) Time (sec) PPM PPM PPM % of Span Zero Gas 0.0 2.0 2,0 0,00% Upscale Gas 245 247,1 241.9 -1.01% 91,5 93,5 System Calibration Bias 

### =[(System Cal. Response - Analyzer Cal. Response) 1Span] x 100 Drift

### =[(Final System Cal. Response -Initial System Cal Response) 1Span] x 100 Final Values 4/12/2008 System Cal System Cal Drift, Response, Cal. Bias Percent of

PPM 

### %ofSpan span 0.6 0,06% -0.02%
47.1**~O,37(X)** 0,00(% Final Values 4/12/2008 System Cal System Cal Drift, Response, Cal. Bias Percent of

PPM % ofSpan span -0.2 -0,14% -0,04% 48,0 -0.21% 0.06% Final Values 4/12/2008 System Cal System Cal Drift, Response, Cal. Bias Percent of

PPM % of Span span 0,1 -0,08% -0.25% 237.3 -'1.31%, -0,02%,
Final Values 4/12/2008 System Cal System Cal Drift, Response, Cal. Bias Percent of

PPM % ofSpan span 2,0 0,00% 0.00% 242,6 -0.88% 0,14% NOx 933 902
936 905

933 902
936 905

948 916 951 920

948 916 951 920

# BARR Engineering Company Project Sample Lac. Date Operators

Zero Gas Low-range

Mid-ranrJe High-range Hibbing Taconite Furnace Line 1 Scrubber Stack 1-4 

### 4/11108

TYL Cylinder Serial No. CC176437 CC106732 CC62111
ANALYZER CALIBRATION DATA Certified Value 0.0 9.0 21.0

Note: Difference must be less than 

### +1- 2 percent ofspan Stack 1 - 02(1) Analyzer Analyzer Mod 

### 1SN Model 200 Cylinder Value Calibration Analyzer Span: 

### 21.0 Response Zero Gas 0.0 Low - Ranqe 0 0.0 Mid - Range 8.98 9.0 High - Range 21.0 20.9 Stack 2 - 02(2) Analyzer Analyzer Mod 

### 1SN Model 200 CylinderValue Calibration Analyzer Span: 21 Response Zero Gas 0 Low - Range 0 0.0 Mid - Range 8.98 9.0 High - Range 21 20.9 Stack 3 - 02(3) Analyzer Analyzer Mod 1SN Model 200 Cylinder Value Calibration Analyzer Span: 21 Response Zero Gas 0 Low - RanrJe 0 0.0 Mid - Range 8.98 9.2

---------**Hig~f<ange_** _ , 21
__ 2_!,O_

---- --- Stack 4 02(4) Analyzer Analyzer Mod 

### 1SN Model 200 Cylinder Value Calibration Analyzer Span: 21 Response Zero Gas 0 Low - Ranqe 0 0.0 Mid - Range 8.98 9.0 High - Range 21 21.0 Absolute Difference 0.0 0.0 0.0 0.1
Absolute Difference 0.0 0.0 0.0 0.1
Absolute Difference 0 0.0 0.2 0
Absolute Difference 0 0.0 0.0 0 

### EPA METHOD 3A 

## Q CEMS ANALYZER CALIBRATION

SYSTEM CALIBRATION BIAS AND DRIFT DATA: Note: System Cal bias cannot exceed 

### +1- 5 percentofspan pre run period System Bias can not exceed 

### +1- 7.5 percent at end ofperiod Drift check exceeding 3% span requires recalibration Difference as % of Span

0.00% 0.00% 0.10% 0.48%
Difference as % ofSpan

0.00% 0.00% 0.10% 0.48%
Difference as

% of Span

0.00% 0.00% 1.05%**O.O~** Difference as 

### % of Span

0.00% 0.00% 0.10% 0.00% Stack 1 - 02(1) Initial Values Final Values 

### 4/11/2008 4/12/2008 Cylinder Analyzer Cal System Cal System Cal System Cal System Cal Response Value Response, Response, Cal. Bias Response, Cal. Bias STACKA(l) Time (sec) PPM PPM PPM % ofSpan PPM % ofSpan Zero Gas 0.0 0.0 0.1 0.48% 0.1 0.48% Upsca_le Gas

-- - 21.0

--- 20.9

- 20.6 -1.43%
__ 20.B_ 0.00%
Stack 2 - 02(2) Initial Values Final Values 

### 4/11/2008 4/12/2008 Cylinder Analyzer Cal System Cal System Cal System Cal System Cal Response Value Response, Response, Cal. Bias Response, Cal. Bias STACK B (2) Time (sec) PPM PPM PPM % ofSpan PPM % ofSpan Zero Gas 0.0 0.0 0.1 0.48% 0.0 0.00% Upscale Gas 21.0 20.9 20.5 -1.90% 21.0 0.48%
Stack 3 - 02(3) Initial Values Final Values 

### 4/11/2008 4/12/2008 Cylinder Analyzer Cal System Cal System Cal System Cal System Cal Response Value Response, Response, Cal. Bias Response, Cal. Bias STACKC(3) Time (sec) PPM PPM PPM % ofSpan PPM % ofSpan Zero Gas 0.0 0.0 0.2 0.95% 0.2 0.95% Upscale Gas 21.0 21.0 20.7 -1.43% 20.8 -0.95%
Stack 4 02(4) Initial Values Final Values 

### 4/11/2008 4/12/2008 Analyzer Cal System Cal System Cal System Cal System Cal Response Response, Response, Cal. Bias Response, Cal. Bias STACK D (4) Time (sec) PPM PPM % of Span PPM % of Span Zero Gas 0 0.0 0.1 0.48% 0.1 0.48% Upscale Gas

-- - 21 _21.0_ 20.6 -1.90%

--- 20.8 -0.95% System Calibration Bias

# =[(System Cal. Response - Analyzer Cal. Response) 

### 1Span] x 100 Drift

# =[(Final System Cal. Response - Initial System Cal Response) 

### 1Span] x 100 

### O2 Drift, Percent of

span 0.00% 1.43%

Drift, Percent of

span -0.48% 2.38%

Drift, Percent of

span 0.00% 0.48%

Drift, Percent of

span 0.00% 0.95% 933 902 953 909

933 902 953 909

948 916 953 922

948 916 

### 953 920

# BARR Engineering Company Project Sample Loc. Date Operators

Zero Gas Low-range

Mid-ranqe High-range Hibbing Taconite Furnace Line 1 Scrubber Stack 1-4 

### 4/11/08

TYL Cylinder Serial No. CC176437 CC62111 CC106732
ANALYZER CALIBRATION DATA Certified Value 0.0 5.05 9.0

Note: Difference must be less than 

### +1- 2 percent ofspan Stack 1 - C02(1 ) Analyzer Analyzer Mod 

### 1SN Model 200 Cylinder Value Calibration Analyzer Span: 9.0 Response Zero Gas 0.0 0.0 Low - Range 0 0.0 Mid - Range 5.05 5.0 High - Range 9.0 9.1 Stack 2 - C02(2) Analyzer Analyzer Mod 

### 1SN Model 200 CylinderValue Calibration Analyzer Span: 8.95 Response Zero Gas 0 0.0 Low - Ran[Je 0 0.0 Mid - Range 5.05 5.0 High - Range 8.95 9.1 Stack 3 - C02(3) Analyzer Analyzer Mod 

### 1SN Model 200 CylinderValue Calibration Analyzer Span: 8.95 Response Zero Gas 0 0.0 Low - Range 0 0.0 Mid - Range 5.05 5.0 High - Range 8.95 9.0 Stack 4 - C02(4) Analyzer Analyzer Mod 

### 1SN Model 200 Cylinder Value Calibration Analyzer Span: 8.95 Response Zero Gas 0 0.0 Low - Ran[Je 0 0.0 Mid - Range 5.05 5.0 High - Range 8.95 9.0 Absolute Difference 0.0 0.0 0.0 0.2
Absolute Difference

0.0 0.0 0.0 0.15
Absolute Difference 0 0.0 0.0 0.05
Absolute Difference 0 0.0 0.0 0.05 

### EPA METHOD 3A CO2 

### CEMS ANALYZER CALIBRATION

SYSTEM CALIBRATION BIAS AND DRIFT DATA: Note: System Cal bias cannot exceed 

### +1- 5 percent of span pre run period System Bias can not exceed 

### +1- 7.5 percent at end of period Drift check exceeding 3% span requires recalibration Difference as



### %ofSpan

0.00% , 0.00% 0.56% 1.68%
Difference as

% ofSpan

0.00% 0.00% 0.56%**_~.68%** Difference as



### %ofSpan

0.00% 0.00% 0.56% 0.56%
Difference as



### % ofSpan

0.00% 0.00% 0.56% 0.56% Stack 1 - C02(l) Initial Values Final Values 

### 4/11/2008 4/12/2008 Cylinder Analyzer Cal System Cal System Cal System Cal System Cal Response Value Response, Response, Cal. Bias Response, Cal. Bias STACKA (1) Time (sec) PPM PPM PPM % ofSpan PPM % ofSpan Zero Gas 0.0 0.0 0.0 0.00% 0.0 0.00% Upscale Gas 5.05 5.0 4.8 -2.23% 5.0 0.00°/,,---- CO2 Stack 2 - C02(2) Initial Values Final Values 

### 4/11/2008 4/12/2008 Cylinder Analyzer Cal System Cal System Cal System Cal System Cal Response Value Response, Response, Cal. Bias Response, Cal. Bias STACK B (2) Time (sec) PPM PPM PPM 

### % ofSoan PPM 

### % ofSoan Zero Gas 0.0 0.0 0.2 2.23% 0.0 0.00% Upscale Gas,
... 5.05 5.0 5.1 1.12% 4.9 -1.12%
Stack 3 - C02(3) Initial Values Final Values 

### 4/11/2008 4/12/2008 Cylinder Analyzer Cal System Cal System Cal System Cal System Cal Response Value Response, Response, Cal. Bias Response, Cal. Bias STACKA(1) Time (sec) PPM PPM PPM 

### % ofSoan PPM % ofSoan Zero Gas 0.0 0.0 0.0 0.00% 0.0 0.00% Upscale Gas

## ---~**~_l-** 4.9 --=.1.12%

.- 5.0 0.00%
Stack 4 - C02(4) Initial Values Final Values 

### 4/11/2008 4/12/2008 Cylinder Analyzer Cal System Cal System Cal System Cal System Cal Response Value Response, Response, Cal. Bias Response, Cal. Bias STACKA(1) Time (sec) PPM PPM PPM % ofSoan PPM 

### % ofSoan Zero Gas 0.0 0.0 0.1 1.12% 0.0 0.00% Upscale Gas

### 5~~_1- 4.9 

## -.::.1. 12

### %__ 4.9 -1.12%) System Calibration Bias

### =[(System Cal. Response - Analyzer Cal. Response) 

### 1Span] x 100 Drift 

### =[(Final System Cal. Response -Initial System Cal Response) 

### 1Span] x 100 

# I Drift, 

# I Percent of

span 0.00% 

# I**~.23%** !

Drift, Percent of

span -2.23% R2.23%J

Drift, Percent of

soan 0.00% 1.12%

Drift, Percent of

span ·1,12%, 0.00%) 933 902 953 909

933 902 953 909

948 916 953 921

948 916 953 921

# BARR Engineering Company Project Sample Loc. Date Operators

Zero Gas Low-range

Mid-range High-range Hibbing Taconite Furnace Line 1 Scrubber Stack 1-4 4/12/08

TYL Cvlinder Serial No. CC176437 CC29081 CC86743 CC7380 CC28675 ANALYZER CALIBRATION DATA Certified Value 0.0 91.5 

### 245 513

, 50,£ Note: Difference must be less than +1- 2 percent of span Stack 1 - NOx(1) Analyzer Analyzer Mod 1SN 200 EH CylinderValue Calibration Analyzer Span: 513 Response Zero Gas 0 0.3 Low - Range 91.5 90.5 Mid - Range 245 244.0 High - Range 513 513.0 50.2 49.0 Slack 2 - NOx(2) Analyzer Analyzer Mod 1SN 200 EJ-I CylinderValue Calibration Analyzer Span: 513 Response Zero Gas 0 

### 0.5 Low - Range 91.5 89.8 Mid - Range 245 244.0 High - Range 513 512.0 50.2 49.1 Stack 3 - NOx(3) Analyzer Analyzer Mod 1SN 200 EJ-I CylinderValue Calibration Analyzer Span: 513 Response Zero Gas 0 0.1 Low - Range 91.5 90.4 Mid - Range 245 244.0 High - Range 513 511.2 50.5 48.4 Stack 4 - NOx(4) Analyzer Analyzer Mod 1SN 600CLD CylinderValue Calibration Analyzer Span: 513 Rosponse Zero Gas 0 2.0 Low - Ran(le 91.5 93.5 Mid - Range 245 247.1 High - Range 513 514.5 50,5 52.0 Absolute Difference

0.3 1.0 1.0 0 1.2 Absolute Difference

0.5 1.7 1.0 1 1.1 Absolute Difference

0.1 1.1 1.0 1.8 2.1 Absolute Difference 2 2.0 2.1 1.5 1.5 

### EPA METHOD 7E NOx CEMS ANALYZER CALIBRATION

SYSTEM CALIBRATION BIAS AND DRIFT DATA: Note: System Cal bias cannot exceed +1- 5 percent of span pre run period System Bias can not exceed +1- 7.5 percent at end of period
Difference as

I'll> 

### of Span

0.06% 0,'19% 0.19% 0.00% 0.23% Difference as

% of Span

O.10!Yu 0.331

### % O.19!Yo 0.19% 

### a.Zily!) Difference as % of Span

0.02% 0.21% 0.19% 0.35%J 0.41% Difference as % of Span

0.39% 0.39% 0.41% 0.29% 0.29% Orin check exceeding 3% span requires recalibration Initial Values 4/12/2008 Cylinder Analyzer Cal System Cal System Cal Response Value Response, Response, Cal. Bias STACKA(1) Time (sec) PPM PPM PPM % ofSpan Zero Gas 0.0 0.3 0.6 0.06% Upscale Gas 245 244.0 91.5 90.5 50.2 49.0 47.1 -0.37% Initial Values 4/12/2008 Cylinder Analyzer Cal System Cal System Cal Response Value Response, Response, Cal. Bias STACK B (2) Time (sec) PPM PPM PPM % of Span Zero Gas 0.0 0.5 -0.2 vO.14°;l) Upscale Gas 245.0 244.0 91.5 89.8 50.2 49.1 48.0 -0.21% Initial Values 4/12/2008 Cylinder Analyzer Cal System Cal System Cal Response Value Response, Response, Cal. Bias STACJ<C (3) Time (sec) PPM PPM PPM % of Span Zero Gas 0.0 0.5 0.1 -0.08% Upscale Gas 245 244 237.3 -1.31%

- 91.5 '- 90.4 

## -_

........_-- Initial Values 4/12/2008 Cylinder Analyzer Cal System Cal System Cal Response Value Response, Response, Cal. Bias STACJ<D (4) Time (sec) PPM PPM PPM % of Span Zero Gas 0.0 2.0 2.0 0.00% Upscale Gas 245 247.1 242.6 

### -D.BBlyo 91.5 93.5 System Calibration Bias'" (System Cal. Response - Analyzer Cal. Response) / Span] x 100 Drift '" ((Final System Cal. Response - Initial System Cal Response)/ Span] x 100 Final Values 4/13/2008 System Cal System Cal Drift, Response, Cal. Bias Percent of

PPM % of Span span 0.6 0.06% 0.00%
46.9 -0.41% -0.04% Final Values 4/13/2008 System Cal System Cal Orin, Response, Cal. Bias Percent of

PPM % of Span span 0.3 -0.04% a.iDly!) I 47.8 -0.25% vO.04% Final Values 4/13/2008 ! System Cal System Cal Drift, Response, Cal. Bias Percent of

PPM % of Span span 0.2 -0.06% 0.02% 241.6 -0.47% 0.84% 

## -_

......_--**~**......---
.....**~ ~.-----------------**  Final Values 4/13/2008 System Cal System Cal Drift, Response, Cal. Bias Percent of

PPM 

### {Yo of Span span 2.2 0.04% 0.04% 244.6 -0.49% 0.39% NOx 902 846
905 850

902 846
905 850

916 901 920 904

916 901 920 904

# BARR Engineering Company Project Sample Loc. Date Operators

Zero Gas Low-range

Mid-ranqe High-range Hibbing Taconite Furnace Line 1 Scrubber Stack 1-4 4/12/08

TYL Cylinder Serial No. CC176437 CC106732 CC62111
ANALYZER CALIBRATION DATA Certified Value 0.0 9.0 21.0

Note: Difference must be less than 

### +1- 2 percent ofspan Stack '1 - 02(1) Analyzer Analyzer Mod 

### 1SN Model 200 Cylinder Value Calibration Analyzer Span: 21.0 Response Zero Gas 0.0 Low - Ranqe 0 0.0 Mid - Range 8.98 9.0 Absolute Difference 0.0 0.0 0.0

____ High-Rangs
________:21.0
____**~9** _._ L._ 0.1 Stack 2 - 02(2) Analyzer Analyzer Mod 

### 1SN Model 200 Cylinder Value Calibration Absolute Analyzer Span: 21 Response Difference Zero Gas 0 0.0 Low - Range 0 0.0 0.0 Mid - Range 8.98 9.0 0.0 High - Range 21 20.9 0.1 Stack 3 - 02(3) Analyzer Analyzer Mod 

### 1SN Model 200 CylinderValue Calibration Absolute Analyzer Span: 21 Response Difference Zero Gas 0 0 Low - Ranqe 0 0.0 0.0 Mid - Range 8.98 9.2 0.2 High.- Range 

## , 21 .21.0 0 Stack 4 02(4) Analyzer Analyzer Mod 

### 1SN Model 200 Cylinder Value Calibration Absolute Analyzer Span: 21 Response Difference Zero Gas 0 0 Low - Range 0 0.0 0.0 Mid - Range 8.98 9.0 0.0 High - Range 21 21.0 0 

### EPA METHOD 3A**~** 

### CEMS ANALYZER CALIBRATION

1919 start calibration

SYSTEM CALIBRATION BIAS AND DRIFT DATA: Note: System Cal bias cannot exceed +/- 5 percentof span pre run period System Bias can not exceed 

### +1- 7.5 percentat end ofperiod Drift check exceeding 3% span requires recalibration Difference as % ofSpan

0.00% 0.00% 0.10% 0.48%

-- Difference as



### % ofSpan

0.00% 0.00% 0.10% 0.48%
Difference as % ofSpan

0.00% 0.00% 1.05% 0.00%

- Difference as



### % of Span

0.00% 0.00% 0.10% 0.00% Stack 1 - 02(1) Initial Values Final Values 4/12/2008 4/13/2008 Cylinder Analyzer Cal System Cal System Cal System Cal System Cal Response Value Response, Response, Cal. Bias Response, Cal. Bias STACKA 

### (1) Time(sec) PPM PPM PPM % ofSpan PPM % ofSfJan Zero Gas 0.0 0.0 0.1 0.48% 0.1 0.48%**lJpscal,"-()a.~**
------ 21.0
__ 2_0.9
__ 20.9 0.00% 21.1 0.95%

- ---_.-- - Stack 2 - 02(2) Initial Values Final Values 4/12/2008 4/13/2008 Cylinder Analyzer Cal System Cal System Cal System Cal System Cal Response Value Response, Response, Cal. Bias Response, Cal. Bias STACK B (2) Time (sec) PPM PPM PPM 

### % ofSpan PPM % ofSpan Zero Gas 0.0 0.0 0.0 0.00% 0.1 0.48% Upscale Gas 21.0 20.9 21.0 0.48% 21.2 1.43%

---- Stack 3 - 02(3) Initial Values Final Values 4/12/2008 4/13/2008 Cylinder Analyzer Cal System Cal Systern Cal System Cal System Cal Response Value Response, Response, Cal. Bias Response, Cal. Bias STACI<C(3) Time (sec) PPM PPM PPM % ofSpan PPM % ofSpan Zero Gas 0.0 0.0 0.2 0.95% 0.2 0.95% Upscale Gas 21.0 21.0 20.8 -0.95% 21.0 0.00%
Stack 4 02(4) Initial Values Final Values 4/12/2008 4/13/2008 Analyzer Cal System Cal Systern Cal System Cal Systern Cal Response Response, Response, Cal. Bias Response, Cal. Bias STACK D (4) Time (sec) PPM PPM % of Span PPM 

### % of Span Zero Gas 0 0.0 0.1 0.48% 0.1 0.48% Upscale Gas 21 21.0 20.8 -0.95% 20.9**~%_** System Calibration Bias

# =[(System Cal. Response - Analyzer Cal. Response)/ Span] x 100 Drift

### =[(Final System Cal. Response - Initial System Cal Response) 

### 1Span] x 100 

## O 2 Drift,

Percent of

sfJan 0.00% 0.95%

Drift, Percent of

span 0.48%**~§o/,,----**

Drift, Percent of

span 0.00% 0.95%

Drift, Percent of

span 0.00%**~1_~_!~** 902 846 909 855

902 846 909 855

916 901 921 908

916 901 921 908

# BARR Engineering Company Project Sample Loc. Date Operators

Zero Gas Low-ranqe

Mid-ranGe Hibbing Taconite Furnace Line 1Scrubber Stack 1-4 4/12/08

TYL Cylinder Serial No. CC176437 CC62111

_**~ral1ll."'.-** __**~106732** ANALYZER CALIBRATION DATA Certified Value 0.0 5.05 9.0

Note: Difference must be less than +1- 2 percent of span Stack 1 - C02(1) Analyzer Analyzer Mod 1SN Model 200 CylinderValue Calibration Analyzer Span: 9.0 Response Zero Gas 0.0 0.0 Low - Range 0 0.0 Mid - Range 5.05 5.0**~ High~ange** - -- - 9.0

-- - 9.1 Stack 2 - C02(2) Analyzer Analyzer Mod 

### 1SN Model 200 CylinderValue Calibration Analyzer Span: 8.95 Response Zero Gas 0 0.0 Low - Rang.e 0 0.0 Mid - Range 5.05 5.0 High· Range 8.95 9.1 Stack 3 - C02(3) Analyzer Analyzer Mod 1SN Model 200 Cylinder Value Calibration Analyzer Span: 8.95 Response Zero Gas 0 0.0 Low - Range 0 0.0 Mid - Range 5.05 5.0 High - Range 8.95 9.0 Stack 4 - C02(4) Analyzer Analyzer Mod 1SN Model 200 Cylinder Value Calibration Analyzer Span: 8.95 Response Zero Gas 0 0.0 Low - Range 0 0.0 Mid - Range 5.05 5.0 High - Range 8.95 

## , 9.0 Absolute Difference

0.0 0.0 0.0 

### EPA METHOD 3A CO2 

### CEMS ANALYZER CALIBRATION

SYSTEM CALIBRATION BIAS AND DRIFT DATA: Note: Syslem Cal bias cannot exceed +1- 5 percent of span pre run period Syslem Bias can nol exceed +1· 7.5 percent al end of period Drift check exceeding 3% span requires recalibration Stack 1 - C02(1) Initial Values Final Values Difference as 4/12/2008 4/13/2008 % of Span Cylinder Analyzer Cal System Cal System Cal System Cal System Cal Drift, Response Value Response, Response, Cal. Bias Response, Cal. Bias Percent of 0.00% STACKA(1) Time (sec) PPM PPM PPM 

### % of Span PPM % of Span span 0.00% Zero Gas 0.0 0.0 0.0 0.00% 0.0 0.00% 0.00% 0.56% Upscale Gas 

# , 5.05 

# , 5.0 5.0 0.00% , 5.0 Q,QOIX, O.GOIX>

__0,2
___**~8'10** Absolute Difference as Difference IX) of Span

0.0 0.00% 0.0 O.OOI'lh 0.0 0.56% 0.15 1.68%
Absolute Difference as Difference %1 of Span 0 0.00% 0.0 0.00% 0.0 0.56% 0.05 0.56%,
Absolute Difference as Difference 

### (Yo of Span 0 0.00% 0.0 

### O.OOlX, 0.0 0.56% 0.05 I 0.56% CO2 Stack 2 - C02(2) Initial Values Final Values 4/12/2008 4/13/2008 Cylinder Analyzer Cal System Cal System Cal System Cal System Cal Response Value Response, Response, Cal. Bias Response, Cal. Bias STACK B(2) Time (sec) PPM PPM PPM % of Span PPM 

### % of Span Zero Gas 0.0 0.0 0.0 0.00% 0.1 1.12% Upscale Gas 5.05 5.0 4.9 -1.12% 5.2 2.23%
Stack 3 - C02(3) Initial Values Final Values 4/12/2008 4/13/2008 Cylinder AnalyzerCal System Cal System Cal System Cal System Cal Response Value Response, Response, Cal. Bias Response, Cal. Bias STACKA(1) Time (sec) PPM PPM PPM 

### %of Span PPM % of Span Zero Gas 0.0 0.0 0.0 0.00% 0.0 0.00% Upscale Gas

___L 5,05
___

### '---.~**~~**L.__**O.OOO~_**

### --~--**~Q~** Stack 4 - C02(4) Initial Values Final Values 4/12/2008 4/13/2008 Cylinder Analyzer Cal System Cal System Cal System Cal System Cal Response Value Response, Response, Cal. Bias Response, Cal. Bias STACI< A (1) Time (sec) PPM PPM PPM % of Span PPM % ofSpan Zero Gas 0.0 0.0 0.0 0.00% 0.0 0.00% Upscale Gas 5.05 5.0 4.9 -1.12% 5.0 , 0.00% System Calibration Bias

### =[(System Cal. Response - Analyzer Cal. Response) 1Span] x 100 Drift

### =[(Final System Cal. Response -Initial System Cal Response) 1Span] x 100 

# I Drift, 1 Percenlof

span 1.12% 3.35%

Drift, Percent of

span 0.00% 0.00%

Drift, Percent of

span 0.00% 1.12% 902 846 909 855

902 846 909 855

916 901 921 908

916 901 921 90B

# BARR Engineering Company Project Sample Loc. Date Operators

Zero Gas Low-range

Mid-range High-range Hibbing Taconite Furnace Line 1 Scrubber Stac\< 1-4 4/t3108



### TYL Cylinder Serial No. CC176437 CC29081 CC86743 CC7380 CC28675 ANALYZER CALIBRATION DATA Certified Value 00 91.5 245 513 50.2
Note: Difference must be less than +/- 2 percent of span Stack 1 - NOx(1) Analyzer Analyzer Mod / SN 200 EI-I Cylinder Value Calibration Analyzer Span: 513 Response Zero Gas 0 0.3 Low - Range 91.5 90.5 Mid - Range 245 244.0 I-ligh - Range 513 513.0 50.2 49.0 Stack 2 - NOx(2) Analyzer Analyzer Mod/ SN 200 EH Cylinder Value Calibration Analyzer Span: 513 Response Zero Gas 0 0.5 Low - Range 91.5 89.8 Mid - Range 245 244.0 High - Range 513 512.0 50.2 49.1 Stack 3 - NOx(3) Anatyzer Analyzer Mod 1SN 200 EH Cylinder Vatue Calibration Analyzer Span: 513 Response Zero Gas 0 0.1 Low - Range 91.5 90.4 Mid - Range 245 244.0 High - Range 513 511.2 50.5 48.4 Stac\< 4 - NOx(4) Analyzer Analyzer Mod 1SN 600CLD Cylinder Value Calibration Analyzer Span: 513 Response Zero Gas 0 2.0 Low - Range 91.5 93.5 Mid - Range 245 247.1 I-ligh - Range 513 514.5 50.5 52.0 Absolute Difference

0.3 1.0 1.0 0 1.2 Absolute Difference

0.5 1.7 10 1 1.1 Absolute Difference

0.1 1.1 1.0 1.8 2.1 Absolute Difference 2 2.0 21 1.5 1.5 

### EPA METHOD 7E NOx CEMS ANALYZER CALIBRATION

SYSTEM CALIBRATION BIAS AND DRIFT DATA: Note: System Cal bias cannot exceed +/- 5 percent of span pre run period System Bias can not exceed +1- 7.5 percent at end of period
Difference as % of Span

0.06% 0.19% 0.19% 0.00% 0.23% Difference as % of Span

0.10% 0.33% 0.19% 0.19% 0,211\10 Difference as %of Span

0.02% 0.21% 0.19% 0.35% 0.41% Difference as % of Span

0.39% 0.39% OJl1% 0.29% O.29!Yu Drift check exceeding 3% span requires recalibralion Initial Values 411312008 Cylinder Analyzer Cal Syslem Cal Syslem Cal Response Value Response, Response, Cal. Bias STACKA(1) Time (sec) PPM PPM PPM % of Span Zero Gas 0.0 0.3 0.6 0.06% Upscale Gas 245 244.0 91.5 90.5 -0.88% 50.2 49.0 46.9 

## I -0.41% Initial Values 411312008 Cylinder Analyzer Cal System Cal System Cal Response Value Response, Response, Cal. Bias STACK B (2) Time (sec) PPM PPM PPM 

### %of Span Zero Gas 0.0 0.5 0.3 -0.04% Upscale Gas 245.0 244.0 91.5 89.8 -0.35% 50.2 49.1 47.8 -0.25% Initial Values 411312008 Cylinder Analyzer Cal System Cal System Cal Response Value Response, Response, Cal. Bias STACK C (3)_ TimejseiOL PPM PPM PPM % of Span Zero Gas 0.0 0.5 0.2 -0.06% Upscale Gas 245 244 241.6 -0.47% 91.5 90.4 Initial Values 411312008 Cylinder Analyzer Cal System Cal System Cal Response Value Response, Response, Cal. Bias STACI( 0 (4) Time (sec) PPM PPM PPM % of Span Zero Gas 0.0 2.0 2.2 0.04% Upscale Gas 245 247.1 244.6 -0.49% 91.5 93.5 System Calibration Bias = [(System Cal. Response - Analyzer Cal. Response) 1Span] x 100 Drift = [(Final System Cal. Response - Initial System Cal Response) 1Span] x 100 Final Values 4/14/2008 Syslem Cal System Cal Drilt, Response, Cal. Bias Percent of

PPM % of Span span 0.3 0.00% -0.06% 86.4 -0.80% 0.08% 469 -0.41% 0.00% Final Values 411412008 System Cal System Cal Drilt, Response, Cal. Bias Percent of

PPM % of Span span 0.1**~O.O8%) ~O.04°A)**  87.1 -0.53% -0.18% 47.7 -0.27% -0.02% Final Values 411412008 System Cal System Cal Drilt, Response, Cal. Bias Percenlof

PPM %of Span span 0.1 -0.08% -0.02% 242.6 -0.27% 0.19%
Final Values 411412008 System Cal System Cal Drill, Response, Cal. Bias Percent of

PPM % of Span span 2.0 0.00%, wO.04% 243.9 -0.62% -0.14% NOx 846 746 Estimaled 752 850 750

!

846 746

Estimated 752 850 750

901 802 904 805

901 802 904 805

# BARR Engineering Company Project Sample Loc. Date Operators

Zero Gas Low-range

Mid-range High-range Hibbing Taconite Furnace Line 1 Scrubber Stack 1-4 4/13/08

TYL Cylinder Serial No. CC176437 CC106732 CC62111
ANALYZER CALIBRATION DATA Certified Value 0.0 9.0 21.0

Note: Difference must be less than +1- 2 percent of span Stack 1-02(1) Analyzer Analyzer Mod I SN Model 200 CylinderValue Calibration Analyzer Span: 21.0 Response Zero Gas 0.0 Low - Range 0 0.0 Mid - Range 8.98 8.9 High - Range 21.0 21.0 CAL 4-13-08 930 Stack 2 - 02(2) Analyzer Analyzer Mod I SN Model 200 CylinderValue Calibration Analyzer Span: 21 Response Zero Gas 0 Low - Range 0 0.0 Mid - Range 8.98 8.9 High - Range 21 21.0 CAL 4-'13-08 930 Stack 3 - 02(3) Analyzer Analyzer Mod I SN Model 200 CylinderValue Calibration Analyzer Span: 21 Response Zero Gas 0 Low - Range 0 0.0 Mid - Range 8.98 9.2**Hi~Rang,,----** - - 21

- - 21.0

-- Stack 4 02(4) Analyzer Analyzor Mod 

### ISN Model 200 CylinderValue Calibration Analyzer Span: 21 Response Zero Gas 0 Low - Range 0 0.0 Mid - Range 8.98 9.0 High - Range 21 21.0 Absolute Difference

0.0 0.0 0.1 0.0
Absolute Difference

0.0 0.0 0.1 0
Absolute Difference 0 0.0 0.2**~O_** Absolute Difference 0 0.0 0.0 

## a EPA METHOD 3A O2 

### CEMS ANALYZER CALIBRATION

SYSTEM CALIBRATION BIAS AND DRIFT DATA: Note: System Cal bias cannot exceed +1- 5 percent ofspan pre run period Syslem Bias can not exceed +1- 7.5 percent at end ofperiod
Difference as 

### % of Span

0.00% 0.00% 0.38% 0.00%
Difference as % ofSpan



### a.DOoA, 0.00% 0.38% 0.00%,
Difference as %, of Span

0.00% 0.00% 1.05%

. 0.00%_
Difference as Iyo of Span

0.00% 0.00% 

### 0.101yo 0.00% 

# _ .... -heck exceedinq 3% span reQuires recalib
.. 

# _ ..

### _

.. 

# - Stack 1 - 02(1) Initial Values Final Values 4/13/2008 4/14/2008 Cylinder Analyzer Cal System Cal System Cal System Cal System Cal Response Vatue Response. Response. Cal. Bias Response. Cal. Bias STACKA(1) Time (sec) PPM PPM PPM % of Span PPM 

### % ofSpan Zero Gas 0.0 0.0 0.0 0.00% 0.0 0.00% Upscale Gas 21.0 21.0 20.8 -0.95% 20.7

### ~~~ Stack 2 - 02(2) Initial Values Final Values 4/13/2008 4/14/2008 Cylinder AnalyzerCal System Cal System Cal System Cal System Cal Response Value Response. Response. Cal. Bias Response. Cal. Bias STACK B (2) Time (sec) PPM PPM PPM % of Span PPM % of Span Zero Gas 0.0 0.0 0.0 D,DQoA, 0.0 0.00% Upscale Gas 21.0 21.0 20.8 -0.95% 20.8 -0.95%
Stack 3 - 02(3) Initial Values Final Values 4/13/2008 4/14/2008 Cylinder AnalyzerCal System Cal System Cal System Cal System Cal Response Value Response. Response. Cal. Bias Response. Cal. Bias STACI< C (3) Time (sec) PPM PPM PPM % ofStJ.an PPM 

### % of Span Zero Gas 0.0 0.0 0.2 0.95% 0.2 0.95% Upscale Gas 21.0 , 21.0 21.0 0.00% 21.0 0.00%
Stack 402(4) Initial Values Final Values 4/13/2008 4/14/2008 Analyzer Cal System Cal System Cal System Cal System Cal Response Response. Response. Cal. Bias Response. Cal. Bias STACI( D (4) Time (sec) PPM PPM % of Span PPM 

### %ofSpan Zero Gas 0 0.0 0.1 0.48% 0.1 0.48% Upscale Gas 21 21.0 20.9 -0.48% 20.9 -0.48% System Calibration Bias

### =[(System Cal. Response - Analyzer Cal. Response) I Span] x 100 Drift 

### =[(Final System Cal. Response -Initial System Cal Response) I Span] x 100 

### O 2 Drift.

Percent of

span 0.00% -0.48%

Drift. Percent of

span 0.00% 0.00%

Drift. Percent of

span 0.00% • 0.00%

Drift. I Percent of

span 

## a.ool}'!, 0.00% 937 746 939 754

937 746 939 754

901 802 908 807

901 802 908 807

# BARR Engineering Company Project Sample Lac. Date Operators Hibbing Taconite Furnace Line 1 Scrubber Stack 1-4 4/13/08.

TYL Cylinder Serial No. Zero Gas CC176437 Low-range

Mid-range CC62111 High-range CC106732
ANALYZER CALIBRATION DATA Note: Difference must be less than +1- 2 percent ofspan Stack 1 - C02(1) Analyzer Mod 1SN Model 200 CylinderValue Analyzer Span: 9.0 Zero Gas 0.0 Low - Range 0 Mid - Range 5.05 High - Range 9.0 Stack 2 - C02(2) Analyzer Mod 1SN Model 200 CylinderValue Analyzer Span: 8.95 Zero Gas 0 Low - Range 0 Mid - Range 5.05 Certified Value 0.0 5.05 9.0

Analyzer Calibration Response

0.0 0.0 5.0 9.1 CAL 4-13-08 930

Analyzer Calibration Response

0.0 0.0 5.0 High - Range _L...........-..

### ~ ___ L.....-
___**~_:~** CAL 4-13-08 930 Stack 3 - C02(3) Analyzer Analyzer Mod 1SN Model 200 CylinderValue Calibration Analyzer Span: 8.95 Response Zero Gas 0 0.0 Low - Range 0 0.0 Mid - Range 5.05 5.0 High - Range 8.95 9.0 Stack 4 - C02(4) Analyzer Analyzer Mod 1SN Model 200 CylinderValue Calibration Analyzer Span: 8.95 Response Zero Gas 0 0.0 Low - Range 0 0.0 Mid - Range 5.05 5.0 High - Range 8.95 9.0 Absolute Difference

0.0 0.0 0.0 0.2
Absolute Difference

0.0 0.0 0.0 0.15
Absolute Difference 0 0.0 0.0 0.05
Absolute Difference 0 0.0 0.0 0.05 

### EPA METHOD 3A CO2 

### CEMS ANALYZER CALIBRATION

SYSTEM CALIBRATION BIAS AND DRIFT DATA: Nole: System Cal bias cannot exceed +1- 5percent ofspan pre run period Syslem Bias can not exceed +1- 7.5 percenl al end of period
Difference as % of Span

0.00% 0.00% 0.56% 1.66%
Difference as % of Span

0.00% 0.00% 0.56%



### __**~_6~ly~_~**

Difference as % of Span

0.00% 0.00% 0,56% 0.56%
Difference as 

### 'Yo of Span

0.00% 0.00% 0.56% 0.56% - ... - ._--- - .._--_...

### '"

- ... --_.. --,_..

### __ .- _._..

### _ .. Stack 1 - C02(1) Initial Values Final Values 411312006 4/1412008 Cylinder Analyzer Cal System Cal System Cal System Cal System Cal Response Value Response, Response, Cal. Bias Response, Cal. Bias STACKA (1) Time (sec) PPM PPM PPM 

### %of Span PPM % of Span Zero Gas 0.0 0.0 0.0 0.00% -0.1 -1.12% Upscale Gas 5.05

- 5.0 L
____________ 

## ?Q 0.00% 4.9 1
_________ -1,12t% CO, Stack 2 - C02(2) Initial Values Final Values 4/13/2008 4114/2006 Cylinder Analyzer Cal System Cal System Cal System Cal System Cal Response Value Response, Response, Cal. Bias Response, Cal. Bias STACK B (2) Time (sec) PPM PPM PPM % ofSpan PPM 

### %of Span Zero Gas 0.0 0.0 0.1 1.12% -0.1 -1.12% Upscale Gas 5.05 5.0 5.0 0.00% 4.9 -1.12%
Stack 3 - C02(3) Initial Values Final Values 411312006 411412006 Cylinder Analyzer Cal System Cal System Cal System Cal System Cal Response Value Response, Response, Cal. Bias Response, Cal. Bias STACKA(1) Time (sec) PPM PPM PPM % of Span PPM 

### %ofSpan Zero Gas 0.0 0.0 0.0 0.00% 0.0 0.00% Upscale Gas

- -- . 5.02..., 5.0 

## __ ?O.
________________ 0.00% 5,0 0.00%
Stack 4 - C02(4) Initial Values Final Values 411312008 4/1412008 Cylinder Analyzer Cal System Cal System Cal System Cal System Cal Response Value Response, Response, Cal. Bias Response, Cal. Bias STACKA(1) Time (sec) PPM PPM PPM % of Span PPM i

### rIJ of Span Zero Gas 0.0 0.0 0.0 0.00% 0.0 0.00% Upscale Gas 

### 5.05 5.0 5.0 0.00% 5.0 0.00% System Calibration Bias 

### = [(System Cal. Response - Analyzer Cal. Response)1Span] x 100 Drift

### =[(Final System Cal. Response -Initial System Cal Response) 1Span] x 100 Drift, Percent of

span -1.12% -1.12%

Drift, Percent of

span -2.23% -1.12% •

Drift, Percent of

span 0.00% 0.00%

Drift, Percent of

span 0.00% 

### O.OOlyo 937 746 939 754

937 746 939 754

901 801 908 807

901 801 908 807

# BARR Engineering Company Project Sample Loc. Date Operators

Zero Gas Low-range

Mid-range High-range Hibbing Taconite Furnace Line 1 Scrubber Stack 1-' 4/14/08

TYL Cvlinder Serial No. CC176437 CC29081 CC86743 CC7380 CC28675 Certified Value 0.0 91.5 

### 245 513 50.2

- . - ANALYZER CALIBRATION DATA Note: Difference must be less than +1- 2 percent of span Stack 1 - NOx(l) Analyzer Analyzer Mod 1SN 200 EI-I CylinderValue Calibration Analyzer Span: 513 Response Zero Gas 0 0.3 Low - Range 91.5 90.5 Mid - Range 245 244.0 High - Range 513 513.0 50.2 49.0 Stack 2 - NOx(2) Analyzer Analyzer Mod 1SN 200 EH CylinderValue Calibration Analyzer Span: 513 Response Zero Gas 0 0.5 Low - RanQe 91.5 89.8 Mid - Range 245 244.0 High - Range 513 512.0 50.2 49.1 Stack 3 - NOx(3) Analyzer Analyzer Mod 1SN 200 EI-I CylinderValue Calibration Analyzer Span: 513 Response Zero Gas 0 0.1 Low - Range 91.5 

### 90A Mid - Range 245 244.0 High - Range 513 511.2 50,5 48.4 Stack 4 - NOx(4) Analyzer Analyzer Mod 1SN 600CLD CylindorValue Calibration Analyzer Span: 513 Response Zero Gas 0 2.0 Low - Range 91.5 93.5 Mid - Range 245 247.1 High - Range 513 

### 514.5 50.5 52.0 Absolute Difference

0.3 1.0 1.0 0 1.2 Absolute Difference

0.5 1.7 1.0 1 1.1 Absolute Difference

0.1 1.1 1.0 1.8 2.1 Absolute Difference 2 2.0 2.1 1.5 1.5 

### EPA METHOD 7E NOx CEMS ANALYZER CALIBRATION

SYSTEM CALIBRATION BIAS AND DRIFT DATA: Note: System Cal bias cannot exceed +1- 5 percent ofspan pre run period System Bias can not exceed +1- 7.5 percent at end of period
Difference as % of Span

0.06% 0.19% 0.19% 0.00% 0.23% Difference as % of Span

0.10% 0,33% 0.19% Q.19t X) 0.2'1% Difference as 

### %of Span

0.02% 0.21% O.19!},o 0.35% 0.41%) Difference as



### %of Span

0.39(10 0.39% 0.41%) 0.29% Q.29 1 rh Drift check exceeding 3% span requires recalibration Initial Values 4/14/2008 Cylinder Analyzer Cal System Cal System Cal Response Value Response, Response, Cal. Bias STACKA (1) Time (sec) PPM PPM PPM % ofSpan Zero Gas 0.0 0.3 0.3 0.00% Upscale Gas 245 244.0 91.5 90.5 86.0 -0.88% 50.2 49.0 Initial Values 4/14/2008 Cylinder Anatyzer Cal System Cal System Cal Response Value Response, Response, Cal. Bias STACK B (2) Time (sec) PPM PPM PPM % of Span Zero Gas 0.0 0.5 0.1 -0.08% Upscale Gas 245.0 244.0 91.5 89.8 87.1 -0.53% 50.2 49.1 Initial Values 4/14/2008 Cylinder AnalyzerCal System Cal System Cal Response Value Response, Response, Cal. Bias STACK C (3) Time (sec) PPM PPM PPM %ofSpan Zero Gas 0.0 0.5 0.1 -0.08% Upscale Gas 245 244 242.6 -0.27% 91.5 90.4

. Initial Values 4/14/2008 Cylinder Analyzer Cal System Cal System Cal Response Value Response, Response, Cal. Bias STACI( 0 (4) Time (sec) PPM PPM PPM % of Span Zero Gas 0.0 2.0 2.0 0.00% Upscale Gas 245 247.1 243.9 -0.62% --'!l.5_-_
.. 93.5 System Calibration Bias

### =[(System Cal. Response - AnalyzerCal. Response)

### 1Span) x 100 Drift 

### =[(Final System Cal. Response -Initial System Cal Response) 

### 1Span) x 100 Final Values 4/15/2008 System Cal System Cal Drift, Response, Cal. Bias Percent of

PPM 

### % of Span span 0.4 0.02% 0,02% 85.7 -0.94%**~O,O6%1** Final Values 4/15/2008 System Cal System Cal Drift, Response, Cal. Bias Percent of

PPM % of Span span 0.8 

### O.06°/h 0.14%, 86.1 -0.72% -O.i9 I

### yo Final Values 4/15/2008 System Cal System Cal Drift, Response, Cal. Bias Percent of

PPM % of Span span 1.0 a.i0!},;} 0.18% 238.1 -1.15% -0.88%
Final Values 4/15/2008 System Cal System Cal Drift, Response, Cal. Bias Percentof

PPM IYt) of Span span 2.2 Q,04IYu O.04°lt) 243.5 MO.701yo -0.08%

--
.. - - NOx •

746 1001 752 1006

746 1001 752 1006

• 802 1018 805 1020

·

•
802 1018 805 1020

# BARR Engineering Company Project Sample Loc. Date Operators Hibbing Taconite Furnace Line 1Scrubber Stack 1-4 4/14/08

TYL Cylinder Serial No. Zero Gas CC176437 Low-range

Mid-range CC106732 _f:IillIl-range CC62111
ANALYZER CALIBRATION DATA Note: Difference must be less than +1- 2 percent ofspan Stack 1 - 02(1) Analyzer Mod I SN Model 200 CylinderValue Analyzer Span: 21.0 Zero Gas 0.0 Low - Range 0 Mid - Range 8.98 High - Range 21.0 Stack 2 - 02(2) Analyzer Mod I SN Model 200 CylinderValue Analyzer Span: 21 Zero Gas 

# a Low - Range 

# a Mid - Range 8.98 High - Range 21

-- -- Stack 3 - 02(3) Analyzer Mod I SN Model 200 CylinderValue Analyzer Span: 21 Zero Gas 

# a Low - Range 

# a Mid - Range 8.98 High - Range 21 Stack 402(4) Analyzer Mod I SN Model 200 CylinderValue Analyzer Span: 21 Zero Gas 

# a Low - Range 

# a Mid - Range 8.98 High - Range 21 Certified Value 0.0 9.0 21_._0
__

Analyzer Calibration Absolute Response Difference 0.0 0.0 0.0 8.9 0.1 21.0 0.0 CAL 4-13-08 930

Analyzer Calibration Absolute Response Difference 0,0 0,0 0.0 8.9 0.1 21..:.2...-_ 

# a CAL 4-13-08 930

Analyzer Calibration Absolute Response Difference 

# a 0.0 0,0 9.2 0,2 21.0 0 Analyzer Calibration Absolute Response Difference 

# a 0.0 0.0 9.0 0.0 21.0 0 

### EPA METHOD 3A O2 

### CEMS ANALYZER CALIBRATION

SYSTEM CALIBRATION BIAS AND DRIFT DATA: Note: System Cal bias cannot exceed +1- 5 percent of span pre run period System Bias can not exceed +1- 7.5 percent at end of period
Difference as

%of Span

0.00% 0.00% 0.38% 0,001

### %
Difference as



### lrh of Span

O,OO°/.) 0.00% 0,38% 0.00%

- Difference as (X, 

### of Span

0.00% 0,00% 1.05%) 0.0011()
Difference as % ofSpan

0.00% 0.00% 0.10% 0,00% Drift check exceeding 3% span requires recalibration Stack 1 - 02(1) Initial Values Final Values 4/14/2008 4/15/2008 Cylinder Analyzer Cal System Cal System Cal System Cal System Cal Response Value Response, Response, Cal. Bias Response, Cal. Bias STACKA(l) Time (sec) PPM PPM PPM % ofSpan PPM % of Span Zero Gas 0,0 0.0 0.0 0.00% 0.1 0.48% Upscale Gas 21.0 21.0 20,8 -0.95% 20.3 -3,33%
Stack 2 - 02(2) Initial Values Final Values 4/14/2008 4/15/2008 Cylinder Analyzer Cal System Cal System Cal System Cal System Cal Response Value Response, Response, Cal. Bias Response, Cal. Bias STACK B (2) Time (sec) PPM PPM PPM % ofSpan PPM % of Span Zero Gas 0.0 0.0 0,0 0.00% 0.0 O.DooAI Upscale Gas

.. 21.0 21.0 20.8_ -0.95% 20.4 , -2,86%_
Stack 3 - 02(3) Initial Values Final Values 4/14/2008 4/15/2008 Cylinder Analyzer Cal System Cal System Cal System Cal System Cal Response Value Response, Response, Cal. Bias Response, Cal. Bias STACI< C (3) Time (sec) PPM PPM PPM % of Span PPM % of Span Zero Gas 0.0 0.0 0.2 0.95%) 0.3 1.43% Upscale Gas 21.0 21.0 21.0 0.00% 20.7 -1.43%
Stack 402(4) Initial Values Final Values 4/14/2008 4/15/2008 AnalyzerCal System Cal System Cal System Cal System Cal Response Response, Response, Cal. Bias Response, Cal. Bias STACK D(4) Time (sec) PPM PPM 

### %ofSpan PPM % ofSpan Zero Gas 0 0.0 0.1 0.48% 0,1 0.48% Upscale Gas 21 21.0 20.9 -0.48% 20.6 -1.90% System Calibration Bias 

### =[(System Cal. Response - Analyzer Cal. Response) 

### ISpan] x 100 Drift

# = [(Final System Cal. Response - Initial System Cal Response) I Span] x 100 

### 0, Drift, Percent of

span 0.48% -2.38%

Drift, Percent of

span 0.00% -1.90%

Drift, Percent of

span i 0.48% ' -1.43% i

Drift, Percent of

span 0.00% -1.43% 746 '1001 754 1010

746 1001 754 1010

8021017 807 '1023

802 1017 807 1023

# BARR Engineering Company Project Sample Loc. Date Operators

Zero Gas Low-range

Mid-range High-range Hibbing Taconite Furnace Line 1Scrubber Stack 1-4 4/14/08

TYL Cylinder Serial No. CC176437 CC62111 CC106732
ANALYZER CALIBRATION DATA Certified Value 0.0 5.05 9.0

Note: Difference must be less than 

### +1- 2 percent ofspan Stack 1-C02(1) Analyzer Analyzer Mod 1SN Model 200 Absolute CylinderValue Calibralion Difference Analyzer Span: 9.0 Response Zero Gas 0.0 0.0 0.0 Low - Range 0 0.0 0.0 Mid - Range 5.05 5.0 0.0 High - Range 9.0**9.~,---** 0.2 CAL 4-13-08 930 Stack 2 - C02(2) Analyzer Analyzer Mod 1SN Model 200 CylinderValue Calibration Absoluto Analyzer Span: 0.95 Response Difference Zero Gas 0 0.0 0.0 Low - Range 0 0.0 0.0 Mid - Range 5.05 5.0 0.0 High - Range 8.95 9.1 0.15 CAL 4-13-08 930 Stack 3 - C02(3) Analyzer Analyzer Mod 1SN Model 200 CylinderValue Calibralion Absolute Analyzer Span: 8.95 Response Difference Zero Gas 0 0.0 0 Low - Range 0 0.0 0.0 Mid - Range 5.05 5.0 0.0 High - Range 8.95 9.0 0.05 Stack 4 - C02(4) Analyzer Analyzer Mod 1SN Model 200 CylinderValue Calibration Absolute Analyzer Span: 8.95 Response Difference Zero Gas 0 0.0 0 Low - Range 0 0.0 0.0 Mid - Range 

### 5.05 5.0 0.0 High - Range 8.95 9.0 0.05 

### EPA METHOD 3A CO2 

### CEMS ANALYZER CALIBRATION

SYSTEM CALIBRATION BIAS AND DRIFT DATA: Note: System Cal bias cannot exceed 

### +1- 5 percentofspan pre run period System Bias can not exceed 

### +1- 7.5 percentatend ofperiod
Difference as oft) of Span

0.00% 0.00% 0,56% 1.68%
Difference as °A) of Span

0.00% 0.00% 0.56% 

# i 1.68% 

## I
Difference as 

# I**[~'h** of Span



### o.aQ°A.} 0.00% 0,56% 0.56%

-- Difference as % of Span

0.00% 0.00% I 0.561 % 

# I 0.56% 

## I Drift check exceeding 3% span requires recalibration Stack 1 - C02(1) Initial Values Final Values 4114/2008 4115/2008 Cylinder Analyzer Cal System Cal System Cal System Cal System Cal Response Value Response, Response, Cal. Bias Response, Cal. Bias STACKA(1) Time (sec) PPM PPM PPM % of Span PPM 

### % of Span Zero Gas 0.0 0.0 -0.1 -1.12% -0.1 -1.12% Upscale Gas 5.05 5.0 5.0 0.00% 4.8 -2.23% CO2 Stack 2 - C02(2) Inilial Values Final Values 4114/2008 4/15/2008 Cylinder Analyzer Cal System Cal System Cal System Cal System Cal Response Value Response, Response, Cal. Bias Response, Cal. Bias STACK B (2) Time (sec) PPM PPM PPM % ofSpan PPM 

### %ofSpan Zero Gas 0.0 0.0 -0.1 -1.12% -0.1 -1.12% Upscale Gas 5.05 5.0 4.9 -1.12%

### ~ -4.47%
Stack 3 - C02(3) Initial Values 411412008 Cylinder Analyzer Cal System Cal System Cal Response Value Response, Response, Cal. Bias STACKA(1) Time (sec) PPM PPM PPM % ofSpan Zero Gas 0.0 0.0 0.0 0.00% Upscale Gas 5.05 5.0 5.0 0.00%
Stack 4 - C02(4) Initial Values 4114/2008 Cylinder Analyzer Cal System Cal System Cal Response Value Response, Response, Cal. Bias STACKA(1) Time (sec) PPM PPM PPM % ofSpan Zero Gas 0.0 0.0 0.0 0.00% Upscale Gas 5.05 5.0 5.0 0.00% System Calibration Bias

### =[(System Cal. Response - Analyzer Cal. Response) 1Span] x 100 Drift

# = [(Final System Cal. Response - Initial System Cal Response)1Span] x 100 Final Values 4115/2008 System Cal System Cal Response, Cal. Bias

PPM % ofSpan 0.0 0.00% 4.9 -1.12%

Final Values 4115/2008 System Cal System Cal Response, Cal. Bias

PPM % ofSpan 0.0 0.00% 4.8 -2.231% Drift•. Percent of

span 0.00% -2.23%

Drift, Percent of

span Q,QOIX) -3.35%

I Drift. Percent of

span 

# I Q,QO(}h I -1.12% !

Drift, Percent of

span 0.00% -2.23% 746 1001 754 1010

746 1001 754 1010

801 1017 807 1023

801 1017 807 '1023

# BARR Engineering Company Project Sample Loc. Date Operators

Zero Gas Low-range

Mid-range Higl1-range Hibbing Taconite Furnace Line 1 Scrubber Stack 1-' 4115108

TYL Cylinder Serial No. CC176437 CC29081 CC86743 CC7380
ANALYZER CALIBRATION DATA Certified Value 0.0 91.5 248 513

Note: Difference must be less tl1an +1- 2 percent ofspan Stack 1 - NOx(1) Analyzer Analyzer Mod 1SN 200 EH CylinderValue Calibration Analyzer Span: 513 Response Zero Gas 0 0.3 Low - Range 91.5 90.5 Mid - Range 248 244.0 Higl1- Range 513 513.0 50.2 49 Stack 2 - NOx(2) Analyzer Analyzer Mod 1SN 200 EH CylinderValue Calibration Analyzer Span: 513 Response Zero Gas 0 0.5 Low - Ranqe 91.5 89.8 Mid - Range 248 244.0

__**~** Higl1 - Range

- 513 512.0 50.2 49.1 Stack 3 - NOx(3) Analyzer Analyzer Mod 1SN 200 EH CylinderValue Calibration Analyzer Span: 513 Response Zero Gas 0 0.1 Low - Range 91.5 90.4 Mid - Range 248 244.0 Higl1- Range 513 511.2 50.5 48.4 Stack 4 - NOx(4) Analyzer Analyzer Mod 1SN 600CLD Cylinder Value Calibration Analyzer Span: 513 Response Zero Gas 0 2.0 Low - Range 91.5 93,5 Mid - Range 248 247.1 Higl1- Range 513 514.5 50.5 52 Absolute Difference

0.3 1.0 4.0 0
Absolute Difference

0.5 1.7 4.0 1
Absolute Difference

0.1 1.1 4.0 1.8
Absolute Difference 2 2.0 0.9 1,5 

### EPA METHOD 7E NOx CEMS ANALYZER CALIBRATION

SYSTEM CALIBRATION BIAS AND DRIFT DATA: Note: System Cal bias cannotexceed +1- 5 percent of span pre run period System Bias can not exceed +1- 7.5 percent at end of period
Difference as % of Span

0.06% Q.19IX, 0.78%, 0.00%
Difference as 

### °A, of Span

a,i0IX) 0.33% 0.78% 0.19%
Difference as 

### %of Span

0.02% 0.21% 0.78% O.351X,
Difference as I}h of Span

O.39 1 

### yo O.39°,h 0.18% 0.29% _ .... _.,-_.. - ..----.,'U' -.- - _.,**.-...,~".--** .--_..-._.._., Initial Values 411512008 Cylinder Analyzer Cal System Cal System Cal Response Value Response, Response, Cal. Bias STACKA(1) Time (sec) PPM PPM PPM % of Span Zero Gas 0.0 0.3 0.4 0.02% Upscale Gas 248 244.0 91.5 90.5 85.7 -0.94% 50.2 49.0 Initial Values 411512008 Cylinder AnalyzerCal System Cal System Cal Response Value Response, Response, Cal. Bias STACKB(2) Time (sec) PPM PPM PPM % ofSpan Zero Gas 0.0 0,5 0.8 0.06% Upscale Gas 248.0 244.0 91.5 89.8 86.1 -0.72% 50.2 49.1 Initial Values 411512008 Cylinder Analyzer Cal System Cal System Cal Response Value Response, Response, Cal. Bias STACK C (3) Time (sec) PPM PPM PPM 

### %ofSpan Zero Gas 0.0 0.5 1.0 0.10% Upscale Gas 248 244 238.1 -1.15% 91.5 90.4 Initial Values 411512008 Cylinder Analyzer Cal System Cal System Cal Response Value Response, Response, Cal. Bias STACK D (4) Time (sec) PPM PPM PPM % ofSoan Zero Gas 0.0 2.0 2.2 0.04% Upscale Gas 248 247.1 243.5 -0.70% 91.5 93.5 System Calibration Bias 

### =[(System Cal. Response - Analyzer Cal. Response) 1Span] x 100 Drift

### =[(Final System Cal. Response -Initial System Cal Response) 1Span] x 100 Final Values 411612008 System Cal System Cal Drift, Response, Cal. Bias Percent of

PPM % ofSpan span 0.2 -0.02% -0.04% 85.2 -1.03% -0.10% Final Values 411612008 System Cal System Cal Drift, Response, Cal. Bias Percent of

PPM % of Span span 1.0 0.10% 0.04% 85**~O,94°A)** -0.21%

Final Values 411612008 System Cal System Cal Drift, Response, Cal. Bias Percent of

PPM % of Span span 0.6 0.02% -0.08% 235.8 -1.60% -0.45%,

.- Final Values 4/1612008 System Cal System Cal Drift, Response, Cal. Bias Percent of

PPM Iyo of Span span 1.4 -Q,12 1 \tl) _O,i6IX, 239.0**-1.58{~'h** -0.88% NOx 1001 1031 1006 1035

1001 103'1 1006 1035

1018 1046 1020 1050

10'18 1046 1020 1050

# BARR Engineering Company Project Sample Loc. Date Operators

Zero Gas Low-range

Mid-range High-range Hibbing Taconite Furnace Line 1 Scrubber Stack 1-4 4115108

TYL Cylinder Serial No. CC176437 CC106732 CC62111
ANALYZER CALIBRATION DATA Certified Value 0.0 9.0 21.0

Note: Difference must be less than +1- 2percent of span Stack 1-02(1) Analyzer Analyzer Mod 1SN Model 200 CylinderValue Calibration Analyzer Span: 21.0 Response Zero Gas 0.0 0.0 Low - Range 0 0.0 Mid - Range 8.98 8.9

- High - Range

- , 21.0

- 21.0 

# , CAL 4-15-081030 Stack 2 - 02(2) Analyzer Analyzer Mod 1SN Model 200 CylinderValue Calibration Analyzer Span: 21 Response Zero Gas 0 0.0 Low - Range 0 0.0 Mid - Range 8.98 9.0 High - Range 21 21.0 CAL 4-'\5-081030 Stack 3 - 02(3) Analyzer Analyzer Mod 1SN Model 200 CylinderValue Calibration Analyzer Span: 21 Response Zero Gas 0 0.0 Low - Range 0 0.0 Mid - Range 8.98 9.1 High - Range 21

-**~.O** CAL 4-15-081045 Stack 402(4) Analyzer Analyzer Mod 1SN Model 200 CylinderValue Calibration Analyzer Span: 21 Response Zero Gas 0 0.0 Low - Range 0 0.0 Mid - Range 8.98 9.0 High - Range 21 21.0 , CAL 4-15-081045 Absolute Difference

0.0 0.0 0.1 0.0
Absolute Difference

0.0 0.0 0.0 0
Absolute Difference 0 0.0 0.1 0
Absolute Difference 0 0.0 0.0 0 

### EPA METHOD 3A O2 

### CEMS ANALYZER CALIBRATION

SYSTEM CALIBRATION BIAS AND DRIFT DATA: Nole: Syslern Cal bias cannot exceed +1- 5percenl ofspan pre run period Syslem Bias can nol exceed +1- 7.5 percenl al end of period
Difference as % of Span

0.00% 0.00% 0.38% 0.00%

- Difference as % of Span

0.00% 0.00% 0.10% 0.00%
Difference as % ofSpan

0.00% 0.00% 0.57% 0.00% ._-- .. _- Difference as % of Span

0.00% 0.00% 0.10% 0.00% Drift check exceeding 3% span requires recalibration Stack 1 - 02(1) Initial Values Final Values 4/1512008 4/16/2008 Cylinder Analyzer Cal System Cal System Cal System Cal System Cal Response Value Response, Response, Cal. Bias Response, Cal. Bias STACI< A (1) Time (sec) PPM PPM PPM 

### %of Span PPM 

### % of Span Zero Gas 0.0 0.0 0.1 0.48% 0.0 0.00% Upscale9as

........- ......-----.--........**---~** 21.0 .- 21.0 20.8


### __'"---....**-O.95°~** 20.5 -2.38%
Stack 2 - 02(2) Initial Values Final Values 4/15/2008 4/16/2008 Cylinder AnalyzerCal System Cal System Cal System Cal System Cal Response Value Response, Response, Cal. Bias Response, Cal. Bias STACK B (2) Time (sec) PPM PPM PPM % of Span PPM 

### % of Span Zero Gas 0.0 0.0 0.0 0.00% 0.1 0.48% Upscale Gas 21.0 21.0 20.9 -0.48% 20.5 -2.38%
Stack 3 - 02(3) Initial Values Final Values 4/15/2008 4/16/2008 Cylinder Analyzer Cal System Cal Syslem Cal System Cal System Cal Response Value Response, Response, Cal. Bias Response, Cal. Bias STACI< C (3) Time (sec) PPM PPM PPM % of Span PPM % ofSpan Zero Gas 0.0 0.0 0.0 0.00% 0.1 0.48% Upscale Gas 

## , .. 21.0 21.0 20.8 -0.95% 20.4 -2.86%
Stack 4 02(4) Initial Values Final Values 4/15/2008 4/16/2008 Analyzer Cal System Cal System Cal System Cal System Cal Response Response, Response, Cal. Bias Response. Cal. Bias STACI< D (4) Time (sec) PPM PPM % of Span PPM % ofSpan Zero Gas 0 0.0 0.0 0.00% 0.0 0.00%) Upscale Gas

...... . .... 

## , 21 21.0
. 20.8 -0.95% 20.6 I
....... -1.90(Vo System Calibration Bias

### =[(System Cal. Response - Analyzer Cal. Response) 1Span] x 100 Drift

### =[(Final System Cal. Response -Initial System Cal Response) 1Span] x 100 

### 0, Drift, Percent of

span -0.48% -1.43%

- -

Drift. Percent of

span 0.48% -1.90%

Drift, Percent of

span 0.48%) -1.90%

Drift. Percenlof

span O.OQlyo -O.95°Al 1034 1031 1038 1039

1034 1031 1037 1039

1053 1046 1057 1052

1053 1046 1057 1052

# BARR Engineering Company Project Sample Loc. Date Operators

Zero Gas Low-ranoe

Mid-range High-range Hibbing Taconite Furnace Line 1 Scrubber Stack 1-4 4115108

TYL Cylinder Serial No. CC176437 CC62111 CC106732
ANALYZER CALIBRATION DATA Certified Value 0.0 5.05 9.0

Note: Difference must be less than +1- 2 percent of span Stack 1 - C02(1) Analyzer Analyzer Mod 1SN Model 200 CylinderValue Calibration Absolute Analyzer Span: 9.0 Response Difference Zero Gas 0.0 0.0 0.0 Low - Range 0 0.0 0.0 Mid - Range 5.05 5.0 0.0 High - Range 9.0 9.1 0.2 CAL 4-15-081030 Stack 2 - C02(2) Analyzer Analyzer Mod 1SN Model 200 Absolute CylinderValue Calibration Difference Analyzer Span: 8.95 Response Zero Gas 0 0.0 0.0 Low - Range 0 0.0 0.0 Mid - Range 5.05 5.0 0.0 High - Range 8.95
___ 9_.1_L-
____**~** CAL 4-'15-081030 Stack 3 - C02(3) Analyzer Analyzer Mod 1SN Model 200 CylinderValue Calibration Absolute Analyzer Span: 8.95 Response Difference Zero Gas 0 0.0 0 Low - Ranoe 0 0.0 0.0 Mid - Range 5.05 5.0 0.0 High - Range 8.95 8.9 

### 0.05 CAL 4-15-081045 4-15-08 104b Stack 4 - C02(4) Analyzer Analyzer Mod 1SN Model 200 CylinderValue Calibration Absolute Analyzer Span: 8.95 Response Difference Zero Gas 0 0.0 0 Low - Range 0 0.0 0.0 Mid - Range 5.05 5.0 0.0 High - Range 8.95 9.0 0.05 CAL 4-15-081045 

### EPA METHOD 3A CO2 

### CEMS ANALYZER CALIBRATION

SYSTEM CALIBRATION BIAS AND DRIFT DATA: Note: System Cal bias cannotexceed +1- 5 percent of span pre run period System Bias can not exceed +1- 7.5 percent at end ofperiod
Difference as % of Span

0.00% 0.00% 

### Q,56f% 1.68%
Difference as % ofSpan

0.00% 0.00% 0.56% 1,68%1

- Difference as (Yo of Span

0.00% 0.00% Q,56°..{) 0.56%
Difference as %) of Span

0,00% 0.00% O.56°/h 0.56% Drift check exceeding 30/0 span requires recalibration Stack 1 - C02(1) Initial Values 411512008 Cylinder Analyzer Cal System Cal System Cal Response Value Response, Response, Cal. Bias STACI<A(1) Time (sec) PPM PPM PPM % ofSpan Zero Gas 0.0 0.0 0.0 

### a.aQoh, Upscale Gas 5.05 5.0
__

### ~~-~Q-**~** 0.00%
Stack 2 - C02(2) Initial Values 411512008 Cylinder Analyzer Cal System Cal System Cal Response Value Response, Response, Cal. Bias STACI< B (2) Time (sec) PPM PPM PPM 

### % of Span Zero Gas 0.0 0.0 0.0 0.00% Upscale Gas 5,05 5.0 4.9 -1.12%
Stack 3 - C02(3) Initial Values 411512008 Cylinder Analyzer Cal System Cal System Cal Response Value Response, Response, Cal. Bias STACI<A(1) Time (sec) PPM PPM PPM % ofSpan Zero Gas 0.0 0.0 0.0 0.00% Upscale Gas 5.05 5.0 4.9 -1.12%
Stack 4 - C02(4) Initial Values 4/15/2008 Cylinder Analyzer Cal System Cal System Cal Response Value Response, Response, Cal. Bias STACKA(1) Time (sec) PPM PPM PPM 

### %of Span Zero Gas 0.0 0.0 0.0 0.00% Upscale Gas 5.05 5.0 

### 5.0 0.00%

-- - System Calibration Bias

### =[(System Cal. Response - Analyzer Cal. Response) 1Span] x 100 Drift 

### =[(Final System Cal. Response - Initial System Cal Response) 1Span] x '100 Final Values 411612008 System Cal System Cal Drift, Response, Cal. Bias Percent of

PPM % of Span span 0.0 0.00%) 0.00% 4.9 

### _____ -1.121:,{} -1.12{X) CO2 Final Values 411612008 System Cal System Cal Drift, Response, Cal. Bias Percent of

PPM % of Span span 0.3 3,351

### Xl 3.35%) 5.1 1.12% 2.23%

Final Values 4/1612008 System Cal System Cal Drift, Response, Cal. Bias Percent of

PPM 

### %of Span span 0.0 0.00% Q,QOIX) 4.9
__ -1.12%_ O.OooAI

- Final Values 411612008 System Cal System Cal Drift, Response, Cal. Bias Percenlof

PPM 

### % of Span span 0.0 0.00% 0.00% 

### 4.9 -1.12% -1.12% 1034 1031 1038 1038

1034 1031 1038 1038

1053 1046 1054

1053 1046 1054

# BARR Engineering Company Project Sample Loc. Date Operators

Zero Gas Low-range

Mid-range High-range Hibbing Taconite Furnace Line 1 Scrubber Stack 1-' 4116108

TYl Cvlinder Serial No. CC176437 CC29081 CC86743 CC7380
ANALYZER CALIBRATION DATA Cerlified Value 0.0 91.5 248 513

------
Note: Difference must be less than +1- 2 percent ofspan Stack 1 - NOx(1) Analyzer Analyzer Mod 1SN 200 EH CylinderValue Calibration Analyzer Span: 513 Response Zero Gas 0 0.3 low- Range 91.5 90.5 Mid - Range 248 244.0 High - Range 513 513.0 50.2 49 Slack 2 - NOx(2) Analyzer Analyzer Mod I SN 200 EH Cylinder Value Calibration Analyzer Span: 513 Response Zero Gas 0 0.5 Low - Ranne 91.5 89.8 Mid - Range 248 244.0 High - Range 513 512.0 50.2 49.1 Stack 3 - NOx(3) Analyzer Analyzer Mod 1SN 200 EH CylinderValue Calibration AnalyzerSpan: 513 Response Zero Gas 0 0.1 low- Range 91.5 90.4 Mid - Range 248 244.0 High - Range 513 511.2 

### 50.5 48.4 Stack 4 - NOx(4) Analyzer Analyzer Mod 1SN 600CLD Cylinder Value Calibration Analyzer Span: 513 Response Zero Gas 0 2.0 Low - Range 91.5 93.5 Mid - Range 248 247.1 High - Range 513 

### '- 514.5 50,5 52 Absolute Difference

0.3 1.0 4.0 0
Absolute Difference

0.5 1.7 4.0 1
Absolute Difference

0.1 1.1 4.0 1.8
Absolute Difference 2 2.0 0.9 1.5 

### EPA METHOD 7E NOx CEMS ANALYZER CALIBRATION

SYSTEM CALIBRATION BIAS AND DRIFT DATA: Note: System Cal bias cannot exceed +1- 5 percent ofspan pre run period System Bias can not exceed +1- 7.5 percent at end of period
Difference as % of Span

0.06% 0.19% 0.78%J 0.00%
Difference as %) 

### of Span

0.10% 0,33'Yt, 0.78% 

### Q.19<Yo
Difference as 

### %of Span

Q,02'Ytl 0.21% 0,78% a.35IM)
Difference as %JofSpan

0.39% 0.39% 0.18% O.291X) Drift check exceeding 3% span requires recalibration Initial Values 411612008 Cylinder Analyzer Cal System Cal System Cal Response Value Response, Response, Cal. Bias STACI<A(1) Time (sec) PPM PPM PPM 

### % of Span Zero Gas 0.0 0.3 0.2 -0.02% Upscale Gas 248 244.0 91.5 90.5 85.2 -1.03% 50.2 49.0 Initial Values 411612008 Cylinder Analyzer Cal System Cal System Cal Response Value Response, Response, Cal. Bias STACI< B (2) Time (sec) PPM PPM PPM % of Span Zero Gas 0.0 0,5 1.0 0.10% Upscale Gas 248.0 244.0 91.5 89.8 85 -0.94% 50.2 49.1 Initial Values 411612008 Cylinder Analyzer Cal System Cal System Cal Response Value Response, Response, Cal. Bias STACI<C(3) Time (sec) PPM PPM PPM % ofSpan Zero Gas 0.0 0.5 0.6 0.02% Upscale Gas 248 244 235.8 -1.60% 91.5 90.4 Initial Values 411612008 Cylinder Analyzer Cal System Cal System Cal Response Value Response, Response, Cal. Bias STACI< 0 (4) Time (sec) PPM PPM PPM 

### %ofSpan Zero Gas 0.0 2.0 1.4 

### -O.12°ft) Upscale Gas 248 247.1 239.0 -1.58% 91.5 93.5 System Calibration Bias 

### =[(System Cal. Response - Analyzer Cal. Response) 1Span] x 100 Drift 

### =[(Final System Cal. Response -Initial System Cal Response) 1Span] x 100 Final Values 411712008 System Cal System Cal Drift, Response, Cal. Bias Percent of

PPM % ofSpan span 0.4 O.021X) 0.04% 85.5 MO.97I

### X) 0.06% Final Values 411712008 System Cal System Cal Drift, Response, Cal. Bias Percent of

PPM % ofSpan span 0.2 -0.061 }'(1 -0.16% 85.2 -0.90% Q,04f Yo Final Values 411712008 System Cal System Cal Drift, Response, Cal. Bias Percent of

PPM 

### %of Span span 1.4 0.18% 0.16% 236.5 -1.46%1 0.14%1
Final Values 411712008 System Cal System Cal Drift, Response, Cal. Bias Percent of

PPM %) of Span span 1.2 -0,16%1**~O,O4%** 238.7 -1.64% -O,06{Yo NOx I 1031 918 1035 921

1031 918 1035 921

1046 931 1050 935

1046 931 1050 935

# BARR Engineering Company Project Sample Loc. Date Operators

Zero Gas Low-range

Mid-range High-range Hibbing Taconite Furnace Line 1 Scrubber Stack 1-4 4/16108

TYL Cylinder Serial No. CC176437 CC106732 CC62111
___ ANALYZER CALIBRATION DATA Certified Value 0.0 9.0 21.0

Note: Difference must be less than +1- 2 percent of span Stack 1 - 02(1) Analyzer Analyzer Mod I SN Model 200 CylinderValue Calibration Analyzer Span: 21.0 Response Zero Gas 0.0 0.0 Low - Range 0 0.0 Mid - Range 8.98 8.9 High- Range 21.0 21.0 CAL 4-15-081030 Stack 2 - 02(2) Analyzer Analyzer Mod 

### ISN Model 200 CylinderValue Calibration Analyzer Span: 21 Response Zero Gas 0 0.0 Low - Range 0 0.0 Mid - Range 8.98 9.0 High- Range 21 21.0 CAL 4-15-081030 Stack 3 - 02(3) Analyzer Analyzer Mod I SN Model 200 CylinderValue Calibration Analyzer Span: 21 Response Zero Gas 0 0.0 Low - Range 0 0.0 Mid - Range 8.98 9.1**--~** High-Hange**.~** 21**~** 21Jl. CAL 4-15-081045 Stack 4 02(4) Analyzer Analyzer Mod I SN Model 200 CylinderValue Calibration Analyzer Span: 21 Response Zero Gas 0 0.0 Low - Range 0 0.0 Mid - Range 8.98 9.0


# ,.. ... High-Range 21 21.0 CAL 4-15-081045 Absolute Difference

0.0 0.0 0.1 0.0
Absolute Difference

0.0 0.0 0.0 0
Absolute Difference 0 0.0 0.1 0
Absolute Difference 0 0.0 0.0 0 

### EPA METHOD 3A O2 

### CEMS ANALYZER CALIBRATION

SYSTEM CALIBRATION BIAS AND DRIFT DATA: Note: Syslem Cal bias cannot exceed +/- 5 percent of span pre run period Syslem Bias can nol exceed +/- 7.5 percenl al end of period
Difference as Iyo of Span

0.00% 0.00% 0.38% 0.00%._
Difference as 

### %of Span !

0.00% ! 0.00%

• 0.10% 

### I 0,00%) 

## I
Difference as % of Span

0,00%) 0.00% 

### 0.57 1

### 10 0.00%
Difference as % of Span

0.00% Q,OOIX) 0.10% 0.00%**~** Stack 1-02(1) Initial Values Final Values 4/16/2008 4/1712008 Cylinder Analyzer Cal System Cal System Cal System Cal System Cal Response Value Response, Response, Cal. Bias Response, Cal. Bias STACKA(1) Time (sec) PPM PPM PPM % of Span PPM % ofSpan Zero Gas 0.0 0.0 0.0 0.00% 0.0 0.00% Upscale Gas. , 

# ........ 21.0,. 21.0_ 20.5 -2.38% 21.0 0.00%
Stack 2 - 02(2) Initial Values Final Values 4/16/2008 4/1712008 Cylinder Analyzer Cal System Cal System Cal System Cal System Cal Response Value Response, Response, Cal. Bias Response, Cal. Bias STACK B (2) Time (sec) PPM PPM PPM % ofSpan PPM 

### % of Span Zero Gas 0.0 0.0 0.1 0.48% 0.1 0.48% ,Upscale Ga"..L.. .'-- 21.0

.. 21.0
_ 20.5 -2.38% 21.1 0.48%
Stack 3 - 02(3) Initial Values Final Values 4/16/2008 4/1712008 Cylinder Analyzer Cal System Cal System Cal System Cal System Cal Response Value Response. Response. Cal. Bias Response, Cal. Bias STACI<C(3) Time (sec) PPM PPM PPM 

### %of Span PPM % ofSpan Zero Gas 0.0 0.0 0.1 0.48%) 0.1 0.48% Upscale Gas 21.0 21.0 20.4 -2,861 % 20.8 -0.95°/1,
Stack 4 02(4) Initial Values Final Values 4/16/2008 4/17/2008 Analyzer Cal System Cal System Cal System Cal System Cal Response Response, Response, Cal. Bias Response, Cal. Bias STACK D (4) Time (sec) PPM PPM % of Span PPM % ofSpan Zero Gas 0 0.0 0.0 0.00% 0.0 0.00% Upscale Gas 21 21.0 20.6 -'1.90%

### .~ 0.48%

---- System Calibration Bias 

### =[(System Cal. Response - AnalyzerCal. Response)/ Span] x 100 Drift

### =[(Final System Cal. Response -Initial System Cal Response) I Span] x 100 

### 0, Drift, Percent of

span 0.00% 2.38%

Drift, Percent of

span 0.00% 2.86%

Drift. Percent of

span 0.001 % 1.90%

Drift, Percent of

span 0,00% 2.38% 1031 918 1039 923

1031 918 

### I 1039 923

1046 932 1052 937

1046 932 1052 937

# BARR Engineering Company Project Sample loco Date Operators

Zero Gas low-range

Mid-range

### ~~@flge Hibbing Taconite Furnace line 1 Scrubber Stack 1-4 4/16/08

TYl Cylinder Serial No. CC176437 CC62111 CC106732
ANALYZER CALIBRATION DATA Certified Value 0.0 5.05 9.0

Note: Difference must be less than 

### +1- 2 percent ofspan Stack 1 - C02(1) Anatyzer Analyzer Mod 1SN Model 200 CylinderValue Calibration Analyzer Span: 9.0 Response Zero Gas 0.0 0.0 low - Range 0 0.0 Mid - Range 5.05 5.0 High - Range 9.0 9:1 CAL 4-15-081030 Stack 2 - C02(2) Analyzer Analyzer Mod 1SN Model 200 CylinderVatue Calibration Analyzer Span: 8.95 Response Zero Gas 0 0.0 Low - Range 0 0.0 Mid - Range 5.05 5.0 '--- High - Range 8.95 9.1 CAL 4-15-081030 Stack 3 - C02(3) Analyzer Analyzer Mod 1SN Model 200 CylinderValue Calibration Analyzer Span: 8.95 Response Zero Gas 0 0.0 Low - Ran(le 0 0.0 Mid - Range 5.05 5.0 High - Range 8.95 8.9 CAL 4-15-081045 Stack 4 - C02(4) Analyzer Analyzer Mod 1SN Model 200 Cylinder Value Calibration Analyzer Span: 8.95 Response Zero Gas 0 0.0 Low - Ran(le 0 0.0 Mid - Range 5.05 5.0 High - Range 8.95 9.0 CAL 4-15-08 1045 Absolute Difference

0.0 0.0 0.0 0.2
Absolute Difference

0.0 0.0 0.0 0.15
Absolute Difference 0 0.0 0.0 0.05
Absolute Difference 0 0.0 0.0 0.05 

### EPA METHOD 3A CO2 

### CEMS ANALYZER CALIBRATION

SYSTEM CALIBRATION BIAS AND DRIFT DATA: Note: System Cal bias cannot exceed 

### +1- 5 percent ofspan pre run period System Bias can not exceed 

### +1- 7.5 percent at end of period
Difference as % of Span

0.00% 0.00% 0.56% 1.68%
Difference as % of Span

0.00% 0.00% 0.56% 1.681 

### M. 

## I
Difference as % of Span

D.DODAI 0.00% 0.56% 0.56%
Difference as 

# I % of Span

0.00% 

### a.aQDAI 0.56% 0.56% Drift check exceeding 3% span requires recalibration Stack 1 - C02(1) Initial Values 4/16/2008 Cylinder AnalyzerCal System Cal System Cal Response Value Response, Response, Cal. Bias STACKA(1) Time (sec) PPM PPM PPM 

### %ofSpan Zero Gas 0.0 0.0 0.0 0.00% Upscale Gas 5.05 5.0 4.9 -1.12%
Stack 2 - C02(2) Initial Values 4/16/2008 Cylinder Analyzer Cal System Cal System Cal Response Value Response, Response, Cal. Bias STACK B (2) Time (sec) PPM PPM PPM % of Span Zero Gas 0.0 0.0 0.3 3.35% Upscale Gas 5.05 5.0 5.1 1.12%
Stack 3 - C02(3) Initial Values 4/16/2008 Cylinder Analyzer Cal System Cal System Cal Response Value Response, Response, Cal. Bias STACI<A(1) Time (sec) PPM PPM PPM % of Span Zero Gas 0.0 0.0 0.0 0.00% Upscale Gas 5.05 5.0 4.9 -1.12%
Stack 4 - C02(4) Initial Values 4/16/2008 Cylinder Analyzer Cal System Cal System Cal Response Value Response, Response, Cal. Bias STACKA(1) Time (sec) PPM PPM PPM % ofSpan Zero Gas 0.0 0.0 0.0 0.00% Upscale Gas 5.05 5.0 4.9 -1.12% System Calibration Bias 

### =[(System Cal. Response - AnalyzerCal. Response) 

### 1Span) x 100 Drift

### =[(Final System Cal. Response -Initial System Cal Response) 1Span] x 100 Final Values 4/17/2008 System Cal System Cal Drift, Response, Cal. Bias Percent of

PPM 

### %ofSpan span 0.0 0.00% 0.00% 5.1 1.12% 2.23% CO, Final Values 4/1712008 System Cal System Cal Drift, Response, Cal. Bias Percent of

PPM % ofSpan span 0.1 1.12%**~2.23Oft,** 5.1 1.12% 0.00%

Final Values 4/17/2008 System Cal System Cal Drift, Response, Cal. Bias Percent of

PPM % ofSpan span 0.0 0.00% 0.00% 5.0 0.00% 1.12%

Final Values 4/17/2008 System Cal System Cal Drift, Response, Cal. Bias Percent of

PPM % ofSpan span 0.0 0.00% O.OooA, 5.0 O.OO°;() 1.12% 1031 918 1038 923

1031 9'18 1038 923

I

1046 932 1054 937

1046 931 1054 937

## ,

# BARR Engineering Company Project Sample Loc. Date Operators

Zero Gas Low-range

Mid-range**~b:range** Hibbing Taconite Furnace Line 3 Scrubber Stack 1-4 3/31/08

TAK Cylinder Serial No. CC176437 CC29081 CC86743 CC7380
ANALYZER CALIBRATION DATA Certified Value 0.0 91.5 245 513

Note: Difference must be less than 

### +1- 2 percent ofspan Stack 1 - NOx(l) Analyzer Analyzer Mod 

### 1SN 200 EH Cylinder Value Calibration Analyzer Span: 513 Response Zero Gas 0 0.3 Low - RanCie 91.5 90.7 Mid - Range 248 244.0

--- High - Range
__ 513 513.9 Stack 2 - NOx(2) Analyzer Analyzer Mod 1SN 200 EH Cylinder Value Calibration Analyzer Span: 513 Response Zero Gas 0 0.1 Low - Range 91.5 90.7 Mid - Range 248 243.0

--- High - Range
__

## -~- 514.5 Stack 3 - NOx(3) Analyzer Analyzer Mod 

### 1SN 200 EH Cylinder Value Calibration Analyzer Span: 513 Response Zero Gas 0 0.2 Low - Range 91.5 90.6 Mid - Range 248 245.0 High - Range 513 , 513.0
__ , Stack 4 - NOx(4) Analyzer Analyzer Mod 

### 1SN 600CLD CylinderValue Calibration Analyzer Span: 513 Response Zero Gas 

## a 2.1 Low - Range 91.5 93.1 Mid - Range 248 247.0 High - Range 513 514.3 

### EPA METHOD 7E NOx CEMS ANALYZER CALIBRATION

SYSTEM CALIBRATION BIAS AND DRIFT DATA: Note: System Cal bias cannot exceed 

### +1- 5 percent ofspan pre run period System Bias can not exceed 

### +1- 7.5 percent at end ofperiod
Absolute Difference as Difference % ofSpan

0.3 0.06% 0.8 0.16% 4.0 0.78% 0:9 0.18%

- Absolute Difference as Difference % ofSpan

0.1 0.02% 0.8 0.16'% 5.0 0.97% 1.5 0.29%
Absolute Difference as Difference % ofSpan

0.2 0.04% 

# I 0.9 0.18% 3.0 0.58% 0 0.00%**--~** Absolute Difference as Difference % ofSpan 2.1 0.41% 1.6 0.31% 1.0 0.19% 1.3 0.25% Drift check exceeding 3% span requires recalibration Initial Values 3/31/2008 1610 Cylinder Analyzer Cal System Cal System Cal Response Value Response, Response, Cal. Bias STACK A (1) Time (sec) PPM PPM PPM 

### % ofSpan Zero Gas 84 0.0 0.3 0.3 0.00% L1Qscale Gas 87 248
__'--- 244.0 239.0 -0.97%
Initial Values 3/31/2008 1610 Cylinder Analyzer Cal System Cal System Cal Response Value Response, Response, Cal. Bias STACK B (2) Time (sec) PPM PPM PPM 

### % ofSpan Zero Gas 92 0.0 0.1 0.7 0.12% c!:JEscale(3as 86 248.0 243.0 239.0 -0.78%

- Initial Values 3/31/2008 1640 Cylinder Analyzer Cal System Cal System Cal Response Value Response, Response, Cal. Bias STACK C (3) Time (sec) PPM PPM PPM 

### % ofSpan Zero Gas 88 0.0 0.1 0.2 0.02% Upscale Gas 86 248 ..• 245 238.0 , -1.36%
Initial Values 313112008 1640 Cylinder Analyzer Cal System Cal System Cal Response Value Response, Response, Cal. Bias STACK 0 (4) Time(sec) PPM PPM PPM 

### % of Span Zero Gas 76 0.0 2.1 2.1 0.00% Upscale Gas 74 248 247.0 242.0 -0.97'Vo System Calibration Bias 

### =[(System Cal. Response - Analyzer Cal. Response) 

### 1Span] x 100 Drift

### =[(Final System Cal. Response -Initial System Cal Response) 1Span] x 100 Final Values 3/31/2008 2125 System Cal System Cal Drift, Response, Cal. Bias Percent of

PPM 

### % ofSpan span 1.1 0.16% 0.16%

. 236.0
__ -1.56% -0.58%
Final Values ! 3/31/2008 2125 System Cal System Cal Drift, Response, Cal. Bias Percent of

PPM % ofSpan span 0.8 0.14%' 0.02% 236.0 -1.36% -0.58%
Final Values 3/31/2008 System Cal System Cal Drift, Response, Cal. Bias Percent of •

PPM 

### % ofSpan span 0.9 0.16% 0.14% 236.0 -1.75% -0.39%
Final Values 3131/2008 System Cal System Cal Drift, Response, Cal. Bias Percent of

PPM 

### % ofSpan span 2.4 0.06% 0.06% 244.0 -0.58% 0.39% NOx

# BARR Engineering Company Project Sample Loc. Date Operators Hibbing Taconite Furnace Line 3 Scrubber Stack 1-4 3/31/08

TAK Cylinder Serial No. Zero Gas CC176437 Low-ranqe

Mid-range CC106732 High-range CC62111
ANALYZER CALIBRATION DATA Note: Difference must be less than 

### +1- 2 percent of span Stack 1 - 02(1) Analyzer Mod 

### 1SN Model 200 Cylinder Value Analyzer Span: 21.0 Zero Gas 0.0 Low - Range 0 Mid - Range 8.98 High - Range 21.0 Stack 2 - 02(2) Analyzer Mod 

### 1SN Model 200 CylinderValue Analyzer Span: 21 Zero Gas 0 Low - Range 0 Mid - Range 8.98 High - Range 21 Stack 3 - 02(3) Analyzer Mod 

### 1SN Model 200 CylinderValue Analyzer Span: 21 Zero Gas 0 Low - Range 0 Mid - Range 8.98 High - Range 21 Stack 402(4) Analyzer Mod 

### 1SN Model 200 CylinderValue Analyzer Span: 21 Zero Gas 0 Low - Ranqe 0 Mid - Range 8.98 High - Range 21 Certified Value 0.0 9.0 21.0

Analyzer Calibration Absolute Response Difference 0.0 0.0 0.0 0.0 9.0 0.0 21.0 0.0 Analyzer Calibration Absolute Response Difference 0.0 0.0 0.0 9.0 0.0 21.0 0

---- Analyzer Absolute Calibration Difference Response 0.0 0 0.0 9.0 0.0 21.0 0 Analyzer Calibration Absolute Response Difference 0.0 0 0.0 9.0 0.0 21.0 0 

### EPA METHOD 3A O2 

### CEMS ANALYZER CALIBRATION

SYSTEM CALIBRATION BIAS AND DRIFT DATA: Note: System Cal bias cannot exceed 

### +1- 5 percent ofspan pre run period System Bias can not exceed 

### +1- 7.5 percent at end of period
Difference as



### % of Span

0.00% 0.00% 0.10% 0.00%
Difference as

% ofSpan

0.00% 0.00% 0.10% 0.00%

------ Difference as



### % ofSpan

0.00% 0.00% 0.10% 0.00%
Difference as



### % of Span

0.00% 0.00% 0.10% 0.00% Drift check exceeding 3% span requires recalibration

- Stack 1 - 02(1) Initial Values Final Values 3/31/2008 1610 3/31/2008 2120 Cylinder Analyzer Cal System Cal System Cal System Cal System Cal Response Value Response, Response, Cal. Bias Response, Cal. Bias STACI< A (1) Time (sec) PPM PPM PPM % of Span PPM % of Span Zero Gas 78 0.0 0.0 0.1 0.48% 0.1 0.48% Upscale Gas 76 21.0 21.0 20.8 -0.95% 20.8 -0.95%
Stack 2 - 02(2) Initial Values Final Values 3/31/2008 1610 3/31/2008 2120 Cylinder Analyzer Cal System Cal System Cal System Cal System Cal Response Value Response, Response, Cal. Bias Response, Cal. Bias STACK B (2) Time (sec) PPM PPM PPM % ofSpan PPM 

### % ofSpan Zero Gas 0.0 0.0 0.1 0.48% 0.1 OA8% 76 21.0 21.0 20.8 -0.95% 20.9 L,J1)Scale Gas

----------

### -O·~ Stack 3 - 02(3) Initial Values 3/31/2008 1645 Cylinder Analyzer Cal System Cal System Cal Response Value Response, Response, Cal. Bias STACK C (3) Time (sec) PPM PPM PPM % of Span Zero Gas 0.0 0.0 0.0 0.00% Upscale Gas 21.0 21.0 20.9 -0.48%
Stack 402(4) Initial Values 3/31/2008 1645 Analyzer Cal System Cal System Cal Response Response, Response, Cal. Bias STACK 0 

### ('I) Time (sec) PPM PPM 

### % of Span Zero Gas 0 0.0 0.0 0.00% Upscale Gas 21 21.0 20.9 -0.48% System Calibration Bias 

### = [(System Cal. Response - Analyzer Cal. Response) 

### 1Span] x 100 Drift

# =[(Final System Cal. Response - Initial System Cal Response) 

### 1Span] x 100 Final Values 3/31/2008 2133 System Cal System Cal Response, Cal. Bias

PPM % of Span 0.1 0.48% 21.0 0.00%
Final Values 3/31/2008 2133 System Cal System Cal Response, Cal. Bias

PPM % of Span 0.1 0.48% 20.8 -0.95%

## O 2 Drift,

Percent of

span 0.00% 0.00%

. Drift, Percent of

span 0.00% 0.48"1oJ

Drift, Percent of

span 0.48% 0.48%

Drift, Percent of

span 0.48% -0.48%

# BARR Engineering Company Project Sample Loc. Date Operators Hibbing Taconite Furnace Line 3 Scrubber Stack 1-4 

### 3/31/08

TAK Cylinder Serial No. Zero Gas CC176437 Low-range

Mid-ranQe CC62111 High-range CC106732
ANALYZER CALIBRATION DATA Note: Difference must be less than 

### +1- 2 percent of span Stack 1 - C02(1) Analyzer Mod 

### 1SN Model 200 CylinderValue Analyzer Span: 9.0 Zero Gas 0.0 Low - Ranqe 0 Mid - Range 5.05 High - Range 9.0

-- 

# - Stack 2 - C02(2) Analyzer Mod 

### 1SN Model 200 Cylinder Value Analyzer Span: 8.95 Zero Gas 0 Low - Range 0 Mid - Range 5.05 High - Range 8.95 Stack 3 - C02(3) Analyzer Mod 

### 1SN Model 200 CylinderValue Analyzer Span: 8.95 Zero Gas 0 Low - Ranqe 0 Mid - Range 5.05 Certified Value 0.0 5.05 9.0

Analyzer Calibration Absolute Response Difference 0.0 0.0 0.0 5.0 0.1 9.0 0.1 Analyzer Calibration Absolute Response Difference 0.0 0.0 0.0 5.0 0.0 9.0 0.05 Analyzer Calibration Absolute Response Difference 0.0 0 0.0 5.0 0.0 

### EPA METHOD 3A CO2 

### CEMS ANALYZER CALIBRATION

SYSTEM CALIBRATION BIAS AND DRIFT DATA: Note: System Cal bias cannot exceed +/- 

### 5 percent ofspan pre run period System Bias can not exceed +/- 

### 7.5 percent at end ofperiod Drift check exceeding 3% span requires recalibration

- 

### Stack 1 - C02(1) Initial Values Final Values Difference as 

### 3/31/2008 1610 

### 3/31/2008 2120



### 'Yo of Span Cylinder Analyzer Cal System Cal System Cal System Cal System Cal Drift, I 

### Response Value Response, Response, Cal. Bias Response, Cal. Bias Percent of 0.00% STACKA(1) Time (sec) PPM PPM PPM % of Span PPM % of Span span 0.00% Zero Gas 78 0.0 0.0 0.0 0.00% 0.1 1.12% 1.12% 0.78% Upscale Gas 76 5.05 5.0 4.9 -0.89% 4.9 -0.89% 0.00% 0.56% CO2 

### Stack 2 - C02(2) Initial Values Final Values . 

### Difference as 

### 3/31/2008 1610 

### 3/31/2008 2120

% of Span Cylinder Analyzer Cal System Cal System Cal System Cal System Cal Drift, Response Value Response, Response, Cal. Bias Response, Cal. Bias Percent of 0.00% STACK A 

### (11 Time (sec) PPM PPM PPM 

### % ofSpan PPM % ofSpan span 0.00% Zero Gas 78 0.0 0.0 0.0 0.00% 0.1 1.12% 1.12% : 0.56% Upscale Gas 76 5.05 5.0 4.9 -1.12% 4.9 -1.12% 0.00% 

# I 0.56% Stack 3 - C02(3) Initial Values Final Values Difference as 

### 3/31/2008 1645 

### 3/31/2008 2133

% of Span Cylinder Analyzer Cal System Cal System Cal System Cal System Cal Drift,

0.00% Response Value Response, Response, Cal. Bias Response, Cal. Bias Percent ofl STACKA (1) Time (sec) PPM PPM PPM % of Span PPM % of Span span , 0.00% Zero Gas 78 0.0 0.0 0.0 0.00% 0.0 0.00% 0.00% i 

### 0.56% Upscale Gas 76 5.05 5.0 5.0 0.00% 5.0 0.00% 0.00%

--- 

### High - Rang(3
__ 8.95 9.0
____**0~_O.56%**

----- 

### Stack 4 - C02(4) Analyzer Analyzer Mod 

### 1SN Model 200 Cylinder Value Calibration Absolute Difference as Analyzer Span: 8.95 Response Difference % of Span Zero Gas 0 0.0 0 0.00% Low - Ranqe 0 0.0 0.00% Mid - Range 5.05 5.0 0.0 0.56% High - Range 8.95 9.0 0.05 0.56% Stack 4 - C02(4) Initial Values Final Values 

### 3/31/2008 1645 

### 3/31/2008 Cylinder Analyzer Cal System Cal System Cal System Cal Response Value Response, Response, Cal. Bias Response, STACKA(l) Time (sec) PPM PPM PPM % of Span PPM Zero Gas 78 0.0 0.0 0.0 0.00% 0.0 Upscale Gas 76 5.05 5.0 5.0 0.00% 4.9 System Calibration Bias" [(System Cal. Response - Analyzer Cal. Response) 

### 1Span] x 100 Drift" [(Final System Cal. Response - Initial System Cal Response) 

### 1Span] x 100 2133 System Cal Cal. Bias % of Span

0.00% -1.12% Drift, Percent of

span 0.00% -1.12% i

# BARR Engineering Company Project Sample loco Date Operators Hibbing Taconite Furnace line 3 Scrubber Stack 1-4 4/1/08 TAK Cylinder Serial No. Certified Value Zero Gas CC176437 low-ran!le CC29081

Mid-range CC86743 Hi[jh-ran!le CC7380
ANALYZER CALIBRATION DATA Cal Date: 3/31/08 Note: Difference must be less than +/- 2 percent ofspan Stack 1 - NOx(1 ) Analyzer Mod / SN 200 EH Cylinder Value Analyzer Span: 513 Zero Gas 0 low - Range 91.5 Mid - Range 248 High - Range 513 Stack 2 - NOx(2) Analyzer Mod / SN 200 EH Cylinder Value Analyzer Span: 513 Zero Gas 0 Low - Ran!le 91.5 Mid - Range 248 High - Range 513

- Stack 3 - NOx(3) Analyzer Mod / SN 200 EH Cylinder Value Analyzer Span: 513 Zero Gas 0 Low - RanQe 91.5 Mid - Range 248

___ l:1i911- Rang"----
___ 513 Stack 4 - NOx(4) Analyzer Mod / SN 600CLD Cylinder Value Analyzer Span: 513 Zero Gas 0 Low - Ran!le 91.5 Mid - Range 248 High - Range 513 0.0 91.5 245 513

Analyzer Calibration Response 0.3 90.7 244.0 513.9 Analyzer Calibration Response 0.1 90.7 243.0 514.5 Analyzer Calibration Response 0.2 90.6 245.0 513.0 Analyzer Calibration Response 2.1 93.1 247.0 514.3 Absolute Difference 0.3 0.8 4.0 0.9
Absolute Difference 0.1 0.8 5.0 1.5

----Absolute

Difference 0.2 0.9 3.0 0
Absolute Difference 2.1 1.6 1.0 1.3 

### EPA METHOD 7E NOx CEMS ANALYZER CALIBRATION

SYSTEM CALIBRATION BIAS AND DRIFT DATA: Note: System Cal bias cannot exceed +/- 5 percent ofspan pre run period System Bias can not exceed +/- 7.5 percent at end ofperiod
Difference as

% of Span

0.06% 0.16% 0.78% 0.18%
Difference as % ofSpan

0.02% 0.16% 0.97% 0.29%

_.

% ofSpan Difference as 

## I

0.04% Q.18%J 0,580/0 

# I 0.00%

----- Difference as % of Span

0.41% 0.31% 0.19% 0.25% Drift check exceeding 3% span requires recalibration

- Initial Values 3/31/2008 2125 Cylinder Analyzer Cal System Cal System Cal Response Value Response, Response, Cal. Bias STACKA(1) Time (sec) PPM PPM PPM 

### %ofSpan Zero Gas 150 0.0 0.3 1.1 0.16% Upscale Gas 160 248 244.0 236.0 -1.56% 91.5 90.7 I -0.53% estimated Initial Values

3/31/2008 2125 Cylinder Analyzer Cal System Cal System Cal Response Value Response, Response, Cal. Bias STACK B(2) Time (sec) PPM PPM PPM % ofSpan Zero Gas 145 0.0 0.1 0.8 0.14% Upscale Gas 150 248.0 243.0 236.0 -1.36% 90.7 -0.72% estimated Initial Values

3/31/2008 2133 Cylinder Analyzer Cal System Cal System Cal Response Value Response, Response, Cal. Bias STACK C (3) Time (sec) PPM PPM PPM 

### % ofSpan Zero Gas 120 0.0 0.1 0.9 0.16% Upscale Ga_s
__ 135 248 245 236.0 -1.75%
Initial Values 3/31/2008 2133 Cylinder Analyzer Cal System Cal System Cal Response Value Response, Response, Cal. Bias STACI< 0 (4) Time (sec) PPM PPM PPM % ofSpan Zero Gas 85 0.0 2.1 2.4 0.06% Upscale Gas 60 248 247.0 244.0 -0.58% System Calibration Bias

# =[(System Cal. Response - Analyzer Cal. Response)/ Span]

### x 100 Drift 

### = [(Final System Cal. Response - Initial System Cal Response)/ Span]

### x 100 Final Values 4/1/2008 1000 System Cal System Cal Drift, Response, Cal. Bias Percent of

PPM % ofSpan span 0.3 0.00% -0.16% 234.0 

### -1.95% -0.39% 86.9 -0.74% -0.21% Final Values 4/1/2008 1000 : System Cal System Cal Drift, 

# I Response, Cal. Bias Percent of

PPM 

### % ofSpan span 0.6 0.10% -0.04% 236.2 -1.33% 0.04% 

### I 87.5 -0.62% 0.10% 

### I Final Values 4/1/2008 1015 System Cal System Cal Drift, Response, Cal. Bias Percent of

PPM 

### % ofSpan span -0.6 -0.14% -0.29% 237.0 -1.56%**.~o_** Final Values : 4/1/2008 System Cal System Cal Drift, Response, Cal. Bias Percent of

PPM % ofSpan span 1.9 -0.04% -0.10% 248.5 0.29% 0.88% NOx

# BARR Engineering Company Project Sample Loc. Date Operators HibbingTaconite Furnace Line 3 Scrubber Stack 1-4 

### 4/1/08 TAK Cylinder Serial No. Certified Value Zero Gas CC176437 Low-ranr:Je

Mid-ranr:Je CC106732 Hir:Jh-ranr:Je CC62111
ANALYZER CALIBRATION DATA Cal Date: 

### 3/31/08 Note: Difference must be less than 

### +1- 2 percent ofspan Stack 1 - 02(1) Analyzer Mod 

### I SN Model 200 CylinderValue Analyzer Span: 21.0 Zero Gas 0.0 Low- Ranr:Je 0 Mid - Range 8.98 High - Range 21.0 Stack 2 - 02(2) Analyzer Mod 

### I SN Model 200 CylinderValue Analyzer Span: 21 Zero Gas 0 Low - Range 0 Mid - Range 8.98 High - Range 21 Stack 3 - 02(3) Analyzer Mod 

### I SN Model 200 CylinderValue Analyzer Span: 21 Zero Gas 0 Low- Range 0 Mid - Range 8.98 High - Range 21 Stack 4 02(4) Analyzer Mod 

### I SN Model 200 Cylinder Value Analyzer Span: 21 Zero Gas 0 Low- Ranr:Je 0 Mid - Range 8.98 High - Range 21 0.0 9.0 21.0

Analyzer Calibration Response 0.0 0.0 9.0 21.0 Analyzer Calibration Response 0.0 9.0 21.0 Analyzer Calibration Response 0.0 9.0 21.0 Analyzer Calibration Response 0.0 9.0 21.0 Absolute Difference 0.0 0.0 0.0 0.0
Absolute Difference 0.0 0.0 0.0 0
Absolute Difference 0 0.0 0.0 0
Absolute Difference 0 0.0 0.0 0 

## EPA METHOD 3A

# O:z CEMS ANALYZER CALIBRATION

SYSTEM CALIBRATION BIAS AND DRIFT DATA: Note: System Cal bias cannot exceed +/- 

### 5 percent ofspan pre run period System Bias can not exceed +/- 

### 7.5 percent at end of period
Difference as



### % of Span

0.00% 0.00% 0.10% 0.00%
Difference as i



### % of Span

0.00%
• 

### 0.00%

. 

### 0.10% 

# I 0.00% 

# I
Difference as

Oft) of Span

0.00% 0.00% 0.10% 0.00%
Difference as

% ofSpan

0.00% 0.00% 0.10% 0.00% Drift check exceeding 3% span requires recalibration Stack 1 - 02(1) Initial Values Final Values 3/31/2008 2120 

### 4/112008 1000 Cylinder Analyzer Cal System Cal System Cal Systern Cal System Cal Response Value Response, Response, Cal. Bias Response, Cal. Bias STACKA(1) Tirne (sec) PPM PPM PPM % of Span PPM % of Span Zero Gas 78 0.0 0.0 0.1 0.48% 0.1 0.48% Upscale Gas 76 21.0 21.0 20.8 -0.95% 20.8 -0.95%
Stack 2 - 02(2) Initial Values Final Values 

### 3/31/2008 2120 

### 4/112008 1000 Cylinder Analyzer Cal System Cal System Cal System Cal System Cal Response Value Response, Response, Cal. Bias Response, Cal. Bias STACK B (2) Time (sec) PPM PPM PPM % of Span PPM 

### % of Span Zero Gas 0.0 0.0 0.1 0.48% 0.1 0.48%**Upscale(3~** 

### 76 21.0 21.0 20.9 -0.48% 20.8 -0.95%

- -- ------------- 

### Staci< 3 - 02(3) Initial Values Final Values 

### 3/31/2008 2133 

### 4/31/08 1015 Cylinder Analyzer Cal System Cal System Cal System Cal System Cal Response Value Response, Response, Cal. Bias Response, Cal. Bias STACK C (3) Time (sec) PPM PPM PPM % of Span PPM 

### % of Span Zero Gas 95 0.0 0.0 0.1 0.48% 0.0 0.00%**lJpscaleG~~** 

### 100 21.0 21.0 21.0 0.00% 20.9 -0.48%

- -------- 

### Stack 4 02(4) Initial Values Final Values 

### 3/31/2008 2133 

### 4/31/08 1015 Analyzer Cal System Cal System Cal System Cal System Cal Response Response, Response, Cal. Bias Response, Cal. Bias STACK D (4) Time (sec) PPM PPM o,{) 

### of Span PPM 

### % of Span Zero Gas 80 0 0.0 0.1 0.48% 0.0 0.00% Upscale Gas 80 21 21.0 20.8 -0.95% 20.9 -0.48% System Calibration Bias

# =[(System Cal. Response - Analyzer Cal. Response) 

### 1Span] x 100 Drift 

### =[(Final System Cal. Response -Initial System Cal Response) 

### 1Span] x 100 

## O 2 

### Drift,

Percent of

span 0.00% 0.00%

Drift, Percent of

span 0.00% -0.48%

Drift, Percent of

span -0.48% -0.48%

Drift, Percent of

span -0.48% 0.48%

# BARR Engineering Company Project Sample Loc. Date Operators Hibbing Taconite Furnace Line 3 Scrubber Stack 1-4 4/1/08 

### TAK Cylinder Serial No. Certified Value Zero Gas CC176437 Low-range

Mid-range CC62111

...___ l::iigil.:.@l1ge CC106732
ANALYZER CALIBRATION DATA Cal Date: 3/31/08 

### Note: Difference rnust be less than 

### +1- 2 percent of span Stack 1 -C02(1) Analyzer Mod 

### I SN Model 200 CylinderValue Analyzer Span: 9.0 Zero Gas 0.0 Low - RanQe 0 Mid - Range 5.05

___.**..._HlgI2~_Fl§n.ge** 

### 9.0 Stack 2 - C02(2) Analyzer Mod I SN Model 200 CylinderValue Analyzer Span: 8.95 Zero Gas 0 Low - Rance 0 Mid - Range 5.05 High - Range 8.95 Stack 3 - C02(3) Analyzer Mod 

### I SN Model 200 Cylinder Value AnalyzerSpan: 8.95 Zero Gas 0 Low- Rance 0 Mid - Range 5.05 High - Range 8.95 Stack 4 - C02(4) Analyzer Mod 

### I SN Model 200 Cylinder Value Analyzer Span: 8.95 Zero Gas 0 Low - RanQe 0 Mid - Range 5.05 High - Range 8.95 0.0 5.05 9.0

------------ ---



### Analyzer Calibration Response 0.0 5.0 9.0 Analyzer Calibralion Response 0.0 5.0 9.0 Analyzer Calibration Response 0.0 5.0 9.0 Analyzer Calibration Response 0.0 5.0 9.0 Absolute Difference 0.0 0.0 0.1 0.1
Absolute Difference 0.0 0.0 0.0 0.05
Absolute Difference 0 0.0 0.0 0.05
Absolute Difference 0 0.0 0.0 0.05 

### EPA METHOD 3A CO2 

### CEMS ANALYZER CALIBRATION

SYSTEM CALIBRATION BIAS AND DRIFT DATA: Note: System Cal bias cannot exceed +/- 

### 5 percent ofspan pre run period System Bias can not exceed +/- 

### 7.5 percent at end ofperiod
Difference as

% of Span

0.00% 0.00% 0.78% 0.56%
Difference as

% of Span

0.00% 0.00% 0.56% 0.56%
Difference as



### % of Span

0.00% 0.00% 0.56% 0.56%
Difference as

% of Span

0.00% 0.00% 0.56% 0.56% Drift check exceeding 3% span requires recalibration Stack 1 - C02(1) Initial Values Final Values 3/31/2008 

### 2120 4/112008 

### 1000 Cylinder AnalyzerCal System Cal System Cal System Cal System Cal Response Value Response, Response, Cal. Bias Response, Cal. Bias STACK A (1) Time (sec) PPM PPM PPM 

### %of Span PPM % of Span Zero Gas 78 0.0 0.0 0.1 1.12% 0.0 0.00% Upscale Gas 76 5.05 5.0 4.9 -0.89% 4.9 -0.89% CO2 

### Stack 2 - C02(2) Initial Values Final Values 3/31/2008 

### 2120 4/112008 

### 1000 Cylinder Analyzer Cal System Cal System Cal System Cal System Cal Response Value Response, Response, Cal. Bias Response, Cal. Bias STACKA(1) Time (sec) PPM PPM PPM % of Span PPM 

### % ofSpan Zero Gas 78 0.0 0.0 0.1 1.12% 0.1 f.12%**UjJ~cale** 

### Gas 76 5.05 5.0 4.9 -1.12% 5.0 0.00%

----------- ----- --------- 

### Stack 3 - C02(3) Initial Values Final Values 3/31/2008 

### 2133 4/31/08 

### 1015 Cylinder Analyzer Cal System Cal System Cal System Cal System Cal Response Value Response, Response, Cal. Bias Response, Cal. Bias STACKA(1) Time (sec) PPM PPM PPM % of Span PPM % of Span Zero Gas 78 0.0 0.0 0.0 0.00% 0.0 0.00% Upscale Gas 76 5.05 5.0 5.0 0.00% 5.0 0.00%
Stack 4 - C02(4) Initial Values Final Values 3/31/2008 

### 2133 4/31/08 

### 1015 Cylinder Analyzer Cal System Cal System Cal System Cal System Cal Response Value Response, Response, Cal. Bias Response, Cal. Bias STACKA(1) Time (sec) PPM PPM PPM % of Span PPM 

### % of Soan Zero Gas 78 0.0 0.0 0.0 0.00% 0.0 0.00% Upscale Gas 76 5.05 5.0 4.9 -1.12% 4.9 -1.12% System Calibration Bias

## =[(System Cal. Response - Analyzer Cal. Response) 

### ISpan] x 100 Drift 

### =[(Final System Cal. Response -Initial System Cal Response) 

### I Span] x 100 Drift, Percent of

span I 

### -1.12% i 

### 0.00% I



### Drift, Percent of!

span 0.00% I 

### 1.12% I



### Drift, Percent of

span 0.00% 0.00%

Drift, Percent of

soan 0.00% 0.00%

# BARR Engineering Company Hibbing Taconite Project Sample Lac. Date Operators Furnace Line 3 Scrubber Stack 1-4 4/1/0B TAI<ITYL Cylinder Serial No. Zero Gas CC176437 Low-range CC290B1

Mid-range CCB6743**----'::J.igh~range** --- CC73BO
__ ANALYZER CALIBRATION DATA Cal Date: 3/31/0B Note: Difference must be less than 

### +1- 2 percent ofspan Stack 1 - NOx(1) Analyzer Mod 

### I SN 200 EH Cylinder Value Analyzer Span: 513 Zero Gas 0 Low - Range 91.5 Mid - Range 248

-- High - Range

-- 513 Stack 2 - NOx(2) Analyzer Mod 

### I SN 200 EH Cylinder Value Analyzer Span: 513 Zero Gas 0 Low - Range 91,5 Mid - Range 248 High - Range 513 Stack 3 - NOx(3) Analyzer Mod 

### I SN 200 EH CylinderValue Analyzer Span: 513 Zero Gas 0 Low - Range 91,5 Mid - Range 248 High - Range 513 Stack 4 - NOx(4) Analyzer Mod 

### I SN 600CLD CylinderValue Analyzer Span: 513 Zero Gas 0 Low - Range 91.5 Mid - Range 24B High - Range 513 Certified Value 0.0 91.5 245 513 ----.

Analyzer Calibration Absolute Response Difference

0.3 0.3 90.7 O.B 244.0 4.0 513.9 

## , 0.9 Analyzer Calibration Absolute Response Difference

0.1 0.1 90.7 O.B 243.0 5.0 514,5 1.5 Analyzer Calibration Absolute Response Difference

0,2 0.2 90,6 0.9 245.0 3.0 513.0 0 Analyzer Calibration Absolute Response Difference

2,1 2,1 93.1 1,6 247,0 1.0 514.3 1,3 

### EPA METHOD 7E NOx CEMS ANALYZER CALIBRATION

SYSTEM CALIBRATION BIAS AND DRIFT DATA: Note: System Cal bias cannot exceed 

### +1- 5 percent ofspan pre run period System Bias can not exceed 

### +1- 7.5 percent at end of period
Difference as

% ofSpan

0.06% 0.16% 0.7B% 0,18%
Difference as 

### % ofSpan

0,02% 0.16% 0,97% 0,29%
Difference as % ofSpan

0,04% 0,18% 0.58% 0,00%,
Difference as 

### % ofSpan

0.41% 0,31% 0.19% 0.25% Drift check exceeding 3% span requires recalibration

- Initial Values 4/1/2008 1000 Cylinder Analyzer Cal System Cal System Cal Response Value Response, Response, Cal. Bias STACKA(1) Time (sec) PPM PPM PPM % ofSpan Zero Gas 150 0.0 0.3 0.3 0.00% Upscale Gas 160 248 244.0 234.0 -1.95% 91.5 90,7 86,9 -0,74% Initial Values 4/1/2008 1000 Cylinder Analyzer Cal System Cal System Cal Response Value Response, Response, Cal. Bias STACK B (2) Time (sec) PPM PPM PPM % ofSpan Zero Gas 145 0.0 0.1 0.6 0.10% Upscale Gas 150 248.0 243.0 236.2 -1.33% 91,5 90.7 87.5 -0.62% Initial Values 4/1/2008 1015 Cylinder Analyzer Cal System Cal System Cal Response Value Response, Response, Cal. Bias STACK C (3) Time (sec) PPM PPM PPM %ofSIJan Zero Gas 120 0.0 0.1 -0.6 -0.14%, Upscale Gas 135 248 245 237.0 -1.56%
Initial Values 4/1/2008 1015 Cylinder Analyzer Cal System Cal System Cal Response Value Response, Response, Cal. Bias STACK D (4) Time (sec) PPM PPM PPM 

### % ofSpan Zero Gas 85 0.0 2.1 1.9 -0.04% Upscale Gas 60 248 247.0 248.5 0.29% System Calibration Bias 

### =[(System Cal. Response - Analyzer Cal. Response) 

### I Span] x 100 Drift 

### =[(Final System Cal. Response - Initial System Cal Response) 

### I Span] x 100 Final Values 4/2/2008 705 System Cal System Cal Drift, Response, Cal. Bias Percent of

PPM % ofSpan span 0.3 0.00% 0,00% 232.4 -2.26% -0.31%, 85.7 -0.97% -0.23% Final Values 4/2/2008 705 System Cal System Cal Drift, Response, Cal. Bias Percent of

PPM % ofSpan span -0.1 -0.04% -0.14% 235.4 -1.48% -0.16% 85.5 -1.01% -0.39%

- Final Values 4/2/2008 718 System Cal System Cal Drift, Response, Cal. Bias Percent of

PPM 

### % ofSpan span 0.6 0.10% 0.23% 236.0 -1.75% -0.19%
Final Values 4/2/200B 718 System Cal System Cal Drift, Response, Cal. Bias Percent of

PPM 

### % ofSpan span 2.2 0.02% 0.061% 250.4 0.66% 0.37% NOx

# BARR Engineering Company Project Sample Loc. Date Operators HibbingTaconite Furnace Line 3 Scrubber Stack 1-4 

### 4/1/08 TAKITYL Cylinder Serial No. Certified Value Zero Gas CC176437 Low-range

Mid-ranQe CC106732**HiQh-rang~** _. 

### CC62111
ANALYZER CALIBRATION DATA Cal Date: 

### 3/31/08 Note: Difference must be less than +1- 2 percent of span Stack 1 - 02(1) Analyzer Mod 

### I SN Model 200 Cylinder Value Analyzer Span: 21.0 Zero Gas 0.0 Low - Range 0 Mid - Range 8.98 High - Range 21.0 Stack 2 - 02(2) Analyzer Mod 

### I SN Model 200 Cylinder Value Analyzer Span: 21 Zero Gas 0 Low - RanQe 0 Mid - Range 8.98 High - Range 21 ._- ---- 

### Stack 3 - 02(3) Analyzer Mod 

### I SN Model 200 CylinderValue Analyzer Span: 21 Zero Gas 0 Low- Range 0 Mid - Range 8.98 High - Range 21 Stack 4 02(4) Analyzer Mod I SN Model 200 CylinderValue Analyzer Span: 21 Zero Gas 0 Low - Range 0 Mid - Range 8.98 High - Range 21 0.0 9.0 21.0

Analyzer Calibration Response 0.0 0.0 9.0 21.0 Analyzer Calibration Response 0.0 9.0 21.0 Analyzer Calibration Response 0.0 9.0 21.0 Analyzer Calibration Response 0.0 9.0 21.0 Absolute Difference 0.0 0.0 0.0 0.0
Absolute Difference 0.0 0.0 0.0 0
Absolute Difference 0 0.0 0.0 0
Absolute Difference 0 0.0 0.0 0 

### EPA METHOD 3A O2 

### CEMS ANALYZER CALIBRATION

3

SYSTEM CALIBRATION BIAS AND DRIFT DATA: Note: System Cal bias cannot exceed +1- 5 percent ofspan pre run period System Bias can not exceed +/- 

### 7.5 percent at end ofperiod
Difference as



### % of Span

0.00% 0.00% 0.10% 0.00%
Difference as

% ofSpan

0.00% 0.00% 0.10% 0.00% 

## I
Difference as

% of Span

0.00% 

# I 0.00% 

# I 0.10% 

# I 0.00% 

# I
Difference as

% of Span

0.00% 0.00% 0.10% 0.00% Drift check exceeding 3% span requires recalibration Stack 1 - 02(1) Initial Values Final Values 

### 4/1/2008 1000 

### 4/2/2008 705 Cylinder Analyzer Cal System Cal System Cal System Cal System Cal Response Value Response, Response, Cal. Bias Response, Cal. Bias STACKA (1) Time (sec) PPM PPM PPM 

### % ofSpan PPM 0;', 

### ofSpan Zero Gas 78 0.0 0.0 0.1 0.48% 0.1 0.48% Upscale Gas 76 21.0 21.0 20.8 -0.95% 20.9 -0.48%

---------- ----------- 

### Stack 2 - 02(2) Initial Values Final Values 

### 4/1/2008 1000 

### 4/2/2008 705 Cylinder Analyzer Cal System Cal System Cal System Cal System Cal Response Value Response, Response, Cal. Bias Response, Cal. Bias STACKB (2) Time (sec) PPM PPM PPM % of Span PPM % of Span Zero Gas 0.0 0.0 0.1 0.48% 0.0 0:00% Upscale Gas 76 21.0 21.0 20.8 -0.95% 20.8 -0.95%
Stack 3 - 02(3) Initial Values Final Values 

### 4/1/2008 1015 

### 4/2/2008 718 Cylinder Analyzer Cal System Cal System Cal System Cal System Cal Response Value Response, Response, Cal. Bias Response, Cal. Bias STACK C (3) Time (sec) PPM PPM PPM % of Span PPM % of Span Zero Gas 95 0.0 0.0 0.0 0.00% 0.1 0.48%**Upscal~**

### Gas 100 21.0
.. 21.0 20.9 -0.48% 20.8 -0.95%

- - ------------ 

### Stack 402(4) Initial Values Final Values 

### 4/1/2008 1015 

### 4/2/2008 718 Analyzer Cal System Cal System Cal System Cal System Cal Response Response, Response, Cal. Bias Response, Cal. Bias STACK D (4) Time (sec) PPM PPM % of Span PPM 

### % of Span Zero Gas 80 0 0.0 0.0 0.00% 0.0 0.00% Upscale Gas 80 21 21.0 20.9 -0.48% 20.9 -0.48% System Calibration Bias 

### = [(System Cal. Response - Analyzer Cal. Response) 

### 1Span] x 100 Drift 

### =[(Final System Cal. Response -Initial System Cal Response) 

### 1Span] x 100 

## O 2 

### Drift,

Percent ofl

span 0.00% -' 0.48%

. 

### Drift, Percent of

span -0.48% 0.00% 

## i


# I Drift, 1 

### Percent ofi

span 0.48% i 

### -0.48% i



### Drift, Percent of

span 0.00% 0.00%

# BARR Engineering Company Project Sample Loc. Date Operators Hibbing Taconite Furnace Line 3 Scrubber Stack 1-4 

### 4/1/0B TAI</TYL Cylinder Serial No. Zero Gas CC176437 Low-range

Mid-ran>le CC62111 High-range CC106732
ANALYZER CALIBRATION DATA Cal Date: 

### 3/31/0B Note: Difference must be less than 

### +1- 2 percent of span Stack 1 - C02(1) Analyzer Mod 

### I SN Model 200 CylinderValue Analyzer Span: 9.0 Zero Gas 0.0 Low - Ran>le 0 Mid - Range 5.05 High - Range 9.0 Stack 2 - C02(2) Analyzer Mod 

### I SN Model 200 CylinderValue Analyzer Span: B.95 Zero Gas 0 Low - Range 0 Mid - Range 5.05



# -**High-~ange** 

### 8.95 Stack 3 - C02(3) Analyzer Mod 

### I SN Model 200 CylinderValue Analyzer Span: B.95 Zero Gas 0 Low - Ran>le 0 Mid - Range 5.05 High - Range 8.95 Stack 4 - C02(4) Analyzer Mod 

### I SN Model 200 CylinderValue Analyzer Span: 8.95 Zero Gas 0 Low - Range 0 Mid - Range 5.05 High - Range 8.95 Certified Value 0.0 5.05 9.0

Analyzer Calibration Absolute Response Difference 0.0 0.0 0.0 5.0 0.1 9.0 0.1 Analyzer Absolute Calibration Difference Response 0.0 0.0 0.0 5.0 0.0 9.0 0.05 Analyzer Calibration Absolute Response Difference 0.0 0 0.0 5.0 0.0 9.0 0.05 Analyzer Absolute Calibration Difference Response 0.0 0 0.0 5.0 0.0 9.0 0.05 

### EPA METHOD 3A CO2 

### CEMS ANALYZER CALIBRATION

SYSTEM CALIBRATION BIAS AND DRIFT DATA: Note: System Cal bias cannot exceed 

### +1- 5 percent ofspan pre run period System Bias can not exceed 

### +1- 7.5 percent at end ofperiod
Difference as

% ofSpan

0.00% 0.00% 0.78% 0.56%
Difference as

% ofSpan

0.00% 0.00% 0.56% 0.56%
Difference as



### % ofSpan

0.00% 0.00% 0.56% 0.56%
Difference as



### % of Span

0.00% 0.00% 0.56% 0.56% Drift check exceeding 3% span requires recalibration Stack 1 - C02(1) Initial Values Final Values 

### 4/1/2008 1000 

### 4/2/200B 705 Cylinder Analyzer Cal System Cal System Cal System Cal System Cal Response Value Response, Response, Cal. Bias Response, Cal. Bias STACI< A (1) Time (sec) PPM PPM PPM % of Span PPM % of Span Zero Gas 78 0.0 0.0 0.0 0.00% 0.0 0.00% Upscale Gas 76 5.05 5.0 4.9 -0.89% 4.9 -0.89% CO2 

### Stack 2 - C02(2) Initial Values Final Values 

### 4/1/200B 1000 

### 4/2/2008 705 Cylinder Analyzer Cal System Cal System Cal System Cal System Cal Response Value Response, Response, Cal. Bias Response, Cal. Bias STACI< B (2) Time (sec) PPM PPM PPM 

### % ofSpan PPM % of Span Zero Gas 78 0.0 0.0 0.1 1.12% 0.1 1".12% Upscale Gas 76 5.05 5.0 5.0 0.00% 5.1 1.12%
Stack 3 - C02(3) Initial Values Final Values 

### 4/1/2008 1015 

### 4/2/2008 71B Cylinder Analyzer Cal System Cal System Cal System Cal System Cal Response Value Response, Response, Cal. Bias Response, Cal. Bias STACI<A(1) Time (sec) PPM PPM PPM % of Span PPM 

### % of Span Zero Gas 78 0.0 0.0 0.0 0.00% 0.0 0.00% Upscale Gas 76 5.05 5.0 5.0 0.00% 5.0 0.00%
Stack 4 - C02(4) Initial Values Final Values 

### 4/1/2008 1015 

### 4/2/2008 718 Cylinder Analyzer Cal System Cal System Cal System Cal System Cal Response Value Response, Response, Cal. Bias Response, Cal. Bias STACI<A(1) Time (sec) PPM PPM PPM % of Span PPM 

### % of Span Zero Gas 78 0.0 0.0 0.0 0.00% 0.0 0.00% Upscale**C:;~**

## __ 76 5.05 5.0 4.9 -1.12% 4.9 -1.12% System Calibration Bias 

### = [(System Cal. Response - Analyzer Cal. Response) 

### I Span] x 100 Drift 

### =[(Final System Cal. Response - Initial System Cal Response) 

### I Span] x 100 Drift, Percent of

span 0.00% 0.00%

Drift, Percent ofi

span 0.00% 1.12%

Drift, Percent of

span 0.00% 0.00%

Drift, Percent of

span 0.00% 0.00%

# BARR Engineering Company Project Sample lac. Date Operators Hibbing Taconite Furnace line3 Scrubber Stack 1-4 

### 4/3/08 TYl Cylinder Serial No. Zero Gas CC176437 low-range CC29081

Mid-ranqe CC86743 High-range CC7380
ANALYZER CALIBRATION DATA Cal Date: 

### 3/31/08 Note: Difference must be less than 

### +1- 2 percent ofspan Stack'l - NOx(1) Analyzer Mod 

### I SN 200 EH Cylinder Value Analyzer Span: 513 Zero Gas 

# ° low - Ranqe 91,5 Mid - Range 248 High - Range 513 Stack 2 - NOx(2) Analyzer Mod 

### I SN 200 EH Cylinder Value Analyzer Span: 513 Zero Gas 

# ° low - Range 91,5 Mid - Range 248 '---- High - Range 513 Stack 3 - NOx(3) Analyzer Mod 

### I SN 200 EH Cylinder Value Analyzer Span: 513 Zero Gas 

# ° Low - Range 91,5 Mid - Range 248 High - Range 513 Stack 4 - NOx(4) Analyzer Mod 

### I SN 600ClD Cylinder Value Analyzer Span: 513 Zero Gas 

# ° Low - Range 91,5 Mid - Range 248**Higll-~ilI1ge** 513 Certified Value 0.0 91.5 245 513

Analyzer Calibration Absolute Response Difference 0.3 0,3 90,7 0,8 244,0 4,0 513,9 0,9 

## , Analyzer Calibration Absolute Response Difference 0,1 0,1 90,7 0,8 243,0 5,0 514,5 1,5 Analyzer Calibration Absolute Response Difference 0.2 0,2 90,6 0,9 245,0 3,0 513,0 

# ° Analyzer Calibration Absolute Response Difference 2,1 2,1 93,1 1,6 247,0 1,0 514,3 1,3 

### EPA METHOD 7E NOx CEMS ANALYZER CALIBRATION

SYSTEM CALIBRATION BIAS AND DRIFT DATA: Note: System Cal bias cannot exceed 

### +1- 5 percent ofspan pre run period System Bias can not exceed 

### +1- 7,5 percent at end of period
Difference as



### % ofSpan

0,06% 0,16% 0,78% 0,18%
Difference as 

# I % ofSpan

0,02% 0,16% 0,97% 0.29%
Difference as



### % of Span

0,04% 0,18% 0,58% 0,00%
Difference as

% ofSpan

0,41% 0,31% 0,19% 0,25% Drift check exceeding 3% span requires recalibration Initial Values 

### 4/2/2008 705 Cylinder Analyzer Cal System Cal System Cal Response Value Response, Response, Cal. Bias STACKA(1) Time (sec) PPM PPM PPM % ofSpan Zero Gas 150 0,0 0,3 0,3 0,00% Upscale Gas 160 248 244,0 232.4 -2.26% 91,5 90,7 85,7 -0,97% Initial Values 

### 4/2/2008 705 Cylinder Analyzer Cal System Cal System Cal Response Value Response, Response, Cal. Bias STACK B (2) Time (sec) PPM PPM PPM % ofSpan Zero Gas 145 0,0 0,1 -0,1 -0,04% Upscale Gas 150 248,0 243,0 235.4 -1.48% 91,5 90,7 85,5 -1,01% Initial Values 

### 4/2/2008 718 Cylinder Analyzer Cal System Cal System Cal Response Value Response, Response, Cal. Bias STACK C (3) Time (sec) PPM PPM PPM % ofSpan Zero Gas 120 0,0 0,1 0,6 0,10% Upscale Gas 135 248 245 236,0 -1,75%
Initial Values 

### 4/2/2008 718 Cylinder Analyzer Cal System Cal System Cal Response Value Response, Response, Cal. Bias STACK 

### 0 (4) Time (sec) PPM PPM PPM 

### % ofSpan Zero Gas 85 0,0 2,1 2.2 0,02% Upscale Gas 60 248 247,0 250.4 0,66% System Calibration Bias 

### =[(System Cal. Response - Analyzer Cal. Response) 

### I Span] x 100 Drift

### =[(Final System Cal. Response -Initial System Cal Response) 

### I Span] 

### x 100 Final Values 

### 4/3/2008 715 System Cal System Cal Drift, Response, Cal. Bias Percent of

PPM % ofSpan span 0,1 -0,04% -0,04% 228.4 -3,04% -0,78% 84,0 -1,31% -0,33% Final Values 

### 4/3/2008 715 System Cal System Cal Drift, Response, Cal. Bias Percent of

PPM % ofSpan span 0,3 0,04% 0,08% 232,5 -2,05% -0,57% 85,5 -1,01% 0,00% Final Values 

### 4/3/2008 731 System Cal System Cal Drift, Response, Cal. Bias Percent of

PPM 

### % ofSpan span 0,7 0,12% 0,02% 231,2 -2,69% -0,94%
Final Values 

### 4/3/2008 731 System Cal System Cal Drift, Response, Cal. Bias Percent of

PPM % ofSpan span 2,1 0,00% -0,02% 244,3 -0,53% -1,19% NOx

# BARR Engineering Company Project Sample Loc. Date Operators Hibbing Taconite Furnace Line 3 Scrubber Stack 1-4 4/3/08 TYL Cylinder Serial No. Zero Gas CC176437 Low-ranqe

Mid-ranqe CC106732 Hiqh-ranqe CC62111

-- 

### ANALYZER CALIBRATION DATA Cal Date: 3/31108 Note: Difference must be less than 

### +1- 2 percent ofspan Stack 1 - 02(1) Analyzer Mod 

### I SN Model 200 CylinderValue Analyzer Span: 21.0 Zero Gas 0.0 Low - Ranqe 0 Mid - Range 8.98 High - Range 21.0 Stack 2 - 02(2) Analyzer Mod I 

### SN Model 200 CylinderValue Analyzer Span: 21 Zero Gas 0 Low - Range 0 Mid - Range 8.98 High - Range 21 Stack 3 - 02(3) Analyzer Mod 

### I SN Model 200 Cylinder Value Analyzer Span: 21 Zero Gas 0 Low - Ranqe 0 Mid - Range 8.98 High - Range 

# .3l Stack 402(4) Analyzer Mod I 

### SN Model 200 CylinderValue Analyzer Span: 21 Zero Gas 0 Low - Ranqe 0 Mid - Range 8.98 High - Range 21 Certified Value 0.0 9.0 21.0

Analyzer Calibration Absolute Response Difference 0.0 0.0 0.0 0.0 9.0 0.0 21.0 0.0

----- 

### Analyzer Calibration Absolute Response Difference 0.0 0.0 0.0 9.0 0.0 21.0 0 Analyzer Calibration Absolute Response Difference 0.0 0 0.0 9.0 0.0 21.0 0



## - Analyzer Calibration Absolute Response Difference 0.0 0 0.0 9.0 0.0 21.0 0 

### EPA METHOD 3A O2 

### CEMS ANALYZER CALIBRATION

SYSTEM CALIBRATION BIAS AND DRIFT DATA: Note: System Cal bias cannot exceed 

### +1- 5 percent ofspan pre run period System Bias can not exceed 

### +1- 7.5 percent at end of period
Difference as

% ofSpan

0.00% 0.00% 0.10% 0.00%
Difference as

% ofSpan

0.00% 0.00% 0.10% 0.00%
Difference as



### %of Span

0.00% 0.00% 0.10% 0.00%

- 

### Difference as

% of Span

0.00% 0.00% 0.10% 0.00%

--------- 

### Drift check exceeding 3% span requires recalibration Stack 1 - 02(1) Initial Values Final Values 4/2/2008 705 4/3/2008 715 Cylinder Analyzer Cal System Cal System Cal System Cal System Cal Response Value Response, Response, Cal. Bias Response, Cal. Bias STACK A (1) Time (sec) PPM PPM PPM 

### %of Span PPM % of Span Zero Gas 78 0.0 0.0 0.1 0.48% 0.0 0.00% Upscale Gas 76 21.0 21.0 20.9 -0.48% 20.7 -1.43%
Stack 2 - 02(2) Initial Values Final Values 4/2/2008 705 4/3/2008 715 Cylinder Analyzer Cal System Cal System Cal System Cal System Cal Response Value Response, Response, Cal. Bias Response, Cal. Bias STACK B (2) Time (sec) PPM PPM PPM % of Span PPM % of Span Zero Gas 0.0 0.0 0.0 0.00% 0.0 0.00%**lJ'pscaJElQa.~** 

### 76 21.0 21.0 20.8 -0.95% 20.8 -0.95%
Stack 3 - 02(3) Initial Values Final Values 4/2/2008 705 4/3/2008 731 Cylinder Analyzer Cal System Cal System Cal System Cal System Cal Response Value Response, Response, Cal. Bias Response, Cal. Bias STACK C (3) Time (sec) PPM PPM PPM % ofSpan PPM 

### % of Span Zero Gas 95 0.0 0.0 0.1 0.48% 0.1 0.48% Upscale Gas 100 21.0 21.0 20.8 -0.95% 20.7 -1.43%
Stack 4 02(4) Initial Values Final Values 4/2/2008 705 4/3/2008 731 Analyzer Cal System Cal System Cal System Cal System Cal Response Response, Response, Cal. Bias Response, Cal. Bias STACK 0 (4) Time (sec) PPM PPM 

### % ofSpan PPM % ofSpan Zero Gas 80 0 0.0 0.0 0.00% 0.0 0.00% Upscale Gas 80 21 21.0 20.9 -0.48% 20.7 -1.43% System Calibration Bias 

### =[(System Cal. Response - Analyzer Cal. Response) 

### 1Span] x 100 Drift 

### = [(Final System Cal. Response -Initial System Cal Response) 

### 1Span] x 100 

## O 2 

### Drift,

Percent of

span -0.48% -0.95%

Drift, Percent of

span 0.00% 0.00%

Drift, Percent of

span 0.00% -0.48%

Drift, Percent of

span 0.00% -0.95%

# BARR Engineering Company Project Sample Lac. Date Operators Hibbing Taconite Furnace Line 3 Scrubber Stack 1-4 

### 4/3/08 TYL Cylinder Serial No. Certified Value Zero Gas CC176437 Low-range

Mid-range CC62111 High-range CC106732
ANALYZER CALIBRATION DATA Cal Date: 

### 3/31/08 Note: Difference must be less than 

### +1- 2 percent of span Stack 1 - C02(1) Analyzer Mod I SN Model 200 CylinderValue Analyzer Span: 9.0 Zero Gas 0.0 Low- Range 0 Mid - Range 5.05 High - Range 9.0 Stack 2 - C02(2) Analyzer Mod 

### I SN Model 200 CylinderValue Analyzer Span: 8.95 Zero Gas 0 Low - Range 0 Mid - Range 5.05

_______**I::llg~~ Rang~___**  

### _ 8.95 Stack 3 - C02(3) Analyzer Mod 

### I SN Model 200 CylinderValue Analyzer Span: 8.95 Zero Gas 0 Low - Range 0 Mid - Range 5.05 High - Range 8.95 Stack 4 - C02(4) Analyzer Mod 

### I SN Model 200 CylinderValue Analyzer Span: 8.95 Zero Gas 0 Low - Range 0 Mid - Range 5.05 High - Range 8.95 0.0 5.05 9.0

Analyzer Calibration Response 0.0 5.0 9.0 Analyzer Calibration Response 0.0 5.0 9.0 Analyzer Calibration Response 0.0 5.0 9.0 Analyzer Calibration Response 0.0 5.0 9.0 Absolute Difference 0.0 0.0 0.1 0.1
Absolute Difference 0.0 0.0 0.0 0.05
Absolute Difference 0 0.0 0.0 0.05
Absolute Difference 0 0.0 0.0 0.05 

### EPA METHOD 3A CO2 

### CEMS ANALYZER CALIBRATION

SYSTEM CALIBRATION BIAS AND DRIFT DATA: Note: System Cal bias cannot exceed 

### +1- 5 percent ofspan pre run period System Bias can not exceed 

### +1- 7.5 percent at end ofperiod
Difference as



### % of Span

0.00% 0.00% 0.78% 0.56%
Difference as

% of Span

0.00% 0.00% I 

### 0.56% 0.56%
Difference as



### % of Span

0.00% 0.00% 0.56% 0.56%
Difference as

% of Span

0.00% 0.00% 0.56% I 

### 0.56% I 

### Drift check exceeding 3% span requires recalibration Stack 1 - C02(1) Initial Values Final Values 

### 4/2/2008 705 

### 4/3/2008 715 Cylinder Analyzer Cal System Cal System Cal System Cal System Cal Response Value Response, Response, Cal. Bias Response, Cal. Bias STACKA (1) Time (sec) PPM PPM PPM 

### % of Span PPM 

### %of Span Zero Gas 78 0.0 0.0 0.0 0.00% 0.0 0.00% Upscale Gas 76 5.05 5.0 4.9 -0.89% 4.9 -0.89% CO2 

### Stack 2 - C02(2) Initial Values Final Values 

### 4/2/2008 705 

### 4/3/2008 715 Cylinder Analyzer Cal System Cal System Cal System Cal System Cal Response Value Response, Response, Cal. Bias Response, Cal. Bias STACK B (2) Time (sec) PPM PPM PPM 

### % of Span PPM 

### % of Span Zero Gas 78 0.0 0.0 0.1 1.12% 0.1 1.12% Upscale Gas 76 5.05 5.0 5.1 1.12% 5.0 0.00%
Stack 3 - C02(3) Initial Values Final Values 

### 4/2/2008 705 

### 4/3/2008 731 Cylinder Analyzer Cal System Cal System Cal System Cal System Cal Response Value Response, Response, Cal. Bias Response, Cal. Bias STACI< A (1) Time (sec) PPM PPM PPM % of Span PPM % of Span Zero Gas 78 0.0 0.0 0.0 0.00% 0.1 1.12% Upscale Gas 76 5.05 5.0 5.0 0.00% 5.0 0.00%
Stack 4 - C02(4) Initial Values Final Values 

### 4/2/2008 705 

### 4/3/2008 731 Cylinder Analyzer Cal System Cal System Cal System Cal System Cal Response Value Response, Response, Cal. Bias Response, Cal. Bias STACK A(l) Time (sec) PPM PPM PPM % of Span PPM % ofSpan Zero Gas 78 0.0 0.0 0.0 0.00% 0.0 0.00% Upscale**~as** 

### 76 5.05 5.0 4.9 -1.12% 4.9 -1.12%

- - 

### System Calibration Bias 

### =[(System Cal. Response - Analyzer Cal. Response) 

### 1Span] x 100 Drift

# =[(Final System Cal. Response -Initial System Cal Response) 

### 1Span] x 100 I 

### Drift, I 

### Percent of

span 0.00% 0.00%

Drift, Percent of

span 0.00% -1.12% I



### Drift, Percent of

span 1.12% I 

### 0.00%

Drift, Percent of

span 0.00% 0.00%

# BARR Engineering Company Hibbing Taconite Project Sample Loc. Date Operators Furnace Line 3 Scrubber Stack 1-4 

### 4/4/08 TYL Cylinder Serial No. Zero Gas CC176437 Low-ranqe CC29081

Mid-range CC86743**~l-ranQe** CC7380
ANALYZER CALIBRATION DATA Cal Date: 

### 3/31/08 Note: Difference must be less than 

### +1- 2 percent ofspan Stack 1 - NOx(1 ) Analyzer Mod 

### I SN 200 EH Cylinder Value Analyzer Span: 513 Zero Gas 0 Low - Range 91.5 Mid - Range 248 High - Range 513 Stack 2 - NOx(2) Analyzer Mod 

### I SN 200 EH CylinderValue Analyzer Span: 513 Zero Gas 0 Low - Range 91.5 Mid - Range 248 High - Range 513 Stack 3 - NOx(3) Analyzer Mod 

### I SN 200 EH Cylinder Value Analyzer Span: 513 Zero Gas 0 Low - RanQe 91.5 Mid - Range 248 

### '----**High:R~~** 513 Stack 4 - NOx(4) Analyzer Mod 

### I SN 600CLD Cylinder Value Analyzer Span: 513 Zero Gas 0 Low - Ranqe 91.5 Mid - Range 248 

### '--- High - Range

-- 513 Certified Value 0.0 91.5 245 513

Analyzer Calibration Absolute Response Difference

0.3 0.3 90.7 0.8 244.0 4.0 513.9 0.9 Analyzer Calibration Absolute Response Difference

0.1 0.1 90.7 0.8 243.0 5.0 514.5 1.5 Analyzer Calibration Absolute Response Difference

0.2 0.2 90.6 0.9 245.0 3.0 513.0 0 Analyzer Calibration Absolute Response Difference

2.1 2.1 93.1 1.6 247.0 1.0 514.3 1.3 

### EPA METHOD 7E NOx CEMS ANALYZER CALIBRATION

SYSTEM CALIBRATION BIAS AND DRIFT DATA: Note: System Cal bias cannot exceed 

### +1- 5 percent ofspan pre run period System Bias can not exceed 

### +1- 7.5 percent at end of period
Difference as



### % ofSpan

0.06% 0.16% 0.78% 0.18%
Difference as

% of Span

0.02% 0.16% 0.97% 0.29%
Difference as 

### % ofSpan

0.04% 0.18% 0.58% 0.00%
Difference as % ofSpan

0.41% 0.31% 0.19% 0.25% Drift check exceeding 3% span requires recalibration Initial Values 

### 4/3/2008 715 Cylinder Analyzer Cal System Cal System Cal Response Value Response, Response, Cal. Bias STACI, A (1) Time (sec) PPM PPM PPM % ofSpan Zero Gas 150 0.0 0.3 0.1 -0.04% Upscale Gas 160 248 244.0 228.4 -3.04% 91.5 90.7 84.0 -1.31% Initial Values 

### 4/3/2008 715 Cylinder Analyzer Cal System Cal System Cal Response Value Response, Response, Cal. Bias STACK B(2) Time (sec) PPM PPM PPM 

### % ofSpan Zero Gas 145 0.0 0.1 0.3 0.04% Upscale Gas 150 248.0 243.0 232.5 -2.05% 91.5 90.7 85.5 -1.01% Initial Values 

### 4/3/2008 731 Cylinder Analyzer Cal System Cal System Cal Response Value Response, Response, Cal. Bias STACK C (3) Time (sec) PPM PPM PPM % ofSpan Zero Gas 120 0.0 0.1 0.7 0.12% lJPscale_Gas 135 248 245 231.2 -2.69%
Initial Values 

### 4/3/2008 731 Cylinder Analyzer Cal System Cal System Cal Response Value Response, Response, Cal. Bias STACK D (4) Time (sec) PPM PPM PPM 

### % ofSpan Zero Gas 85 0.0 2.1 2.1 0.00% Upscale Gas 60 248 247.0 244.3 -0.53% System Calibration Bias

### =[(System Cal. Response - Analyzer Cal. Response) 

### I Span] x 100 Drift

# =[(Final System Cal. Response -Initial System Cal Response) 

### I Span] x 100 Final Values : 

### 4/4/2008 730 System Cal System Cal Drift, Response, Cal. Bias Percent of

PPM 

### % ofSpan span 0.3 0.00% 0.04% 228.3 -3.06% -0.02% 84.6 -1.19% 0.12% Final Values 

### 4/4/2008 730 System Cal System Cal Drift, Response, Cal. Bias Percent of

PPM 

### % ofSpan span 0.1 

### 0.001

### % -0.04% 231.3 -2.28% -0.23% , 85.2 -1.07% -0.06% Final Values 

### 4/4/2008 746 System Cal System Cal Drift, Response, Cal. Bias Percent of

PPM % ofSpan span 1.1 0.19% 0.08% 231.3 -2.67'1,
_ _ 0.02%

- Final Values 

### 4/4/2008 746 System Cal System Cal Drift, Response, Cal. Bias Percent of

PPM 

### % ofSpan span 1.7 -0.08% -0.08% 246.6 -0.08%, 0.45'% NOx

# BARR Engineering Company Project Sample Loc. Date Operators Hibbing Taconite Furnace Line 3 Scrubber Stack 1-4 

### 4/4/08 TYL Cylinder Serial No. Zero Gas CC176437 Low-ranf:je

Mid-ranf:je CC106732 High-range CC62111
ANALYZER CALIBRATION DATA Cal Date: 

### 3/31/08 Note: Difference must be less than 

### +1- 2 percent of span Stack 1 - 02(1) Analyzer Mod I SN Model 200 CylinderValue Analyzer Span: 21.0 Zero Gas 0.0 Low- Ranf:je 0 Mid - Range 8.98



# ______ l1i

## 9h : R<JnJle
____ 21.0 Stack 2 - 02(2) Analyzer Mod 

### I SN Model 200 Cylinder Value Analyzer Span: 21 Zero Gas 0 Low - Ranqe 0 Mid - Range 8.98 High - Range 21 Stack 3 - 02(3) Analyzer Mod 

### I SN Model 200 Cylinder Value Analyzer Span: 21 Zero Gas 0 Low - Ranf:je 0 Mid - Range 8.98 High - Range 21 Stack 4 02(4) Analyzer Mod 

### I SN Model 200 CylinderValue Analyzer Span: 21 Zero Gas 0 Low - Ranf:je 0 Mid - Range 8.98 High - Range 21 Certified Value 0.0 9.0 21.0

Analyzer Calibration Absolute Response Difference 0.0 0.0 0.0 0.0 9.0 0.0 21.0 0.0 Analyzer Calibration Absolute Response Difference 0.0 0.0 0.0 9.0 0.0 21.0 0 Analyzer Calibration Absolute Response Difference 0.0 0 0.0 9.0 0.0 21.0 0

-------- 

### Analyzer Calibration Absolute Response Difference 0.0 0 0.0 9.0 0.0 21.0 0 

### EPA METHOD 3A O2 

### CEMS ANALYZER CALIBRATION

SYSTEM CALIBRATION BIAS AND DRIFT DATA: Note: System Cal bias cannot exceed +1- 5 percent of span pre run period System Bias can not exceed +1- 7.5 percent at end of period
Difference as



### % of Span 

## I

0.00% 

## I 0.00% 

## I 0.10% 

# I 0.00%
Difference as

% of Span

0.00% 0.00% 0.10% 0.00%
Difference as



### % of Span

0.00% 0.00% 0.10% 0.00%

-- ----



### Difference as

% of Span

0.00% 0.00% 0.10% 0.00% Drift check exceeding 3% span requires recalibration Stack 1 - 02(1) Initial Values Final Values 

### 4/3/2008 715 

### 4/4/2008 730 Cylinder Analyzer Cal System Cal System Cal System Cal System Cal Response Value Response, Response, Cal. Bias Response, Cal. Bias STACKA (1) Time (sec) PPM PPM PPM % of Span PPM % of Span Zero Gas 78 0.0 0.0 0.0 0.00% 0.1 0.48% Upscale Gas 76 21.0 21.0 20.7 -1.43% 20.7 -1.43%

----------- 

### Stack 2 - 02(2) Initial Values Final Values 

### 4/3/2008 715 

### 4/4/2008 730 Cylinder Analyzer Cal System Cal System Cal System Cal System Cal Response Value Response, Response, Cal. Bias Response, Cal. Bias STACK B (2) Time (sec) PPM PPM PPM % of Span PPM 

### % of Span Zero Gas 0.0 0.0 0.0 0.00% 0.1 0.48% Upscale Gas 76 21.0 21.0 20.8 -0.95% 20.7 -1.43%
Stack 3 - 02(3) Initial Values Final Values 

### 4/3/2008 731 

### 4/4/2008 746 Cylinder AnalyzerCal System Cal System Cal System Cal System Cal Response Value Response, Response, Cal. Bias Response, Cal. Bias STACK C (3) Time (sec) PPM PPM PPM % of Span PPM % of Span Zero Gas 95 0.0 0.0 0.1 0.48% 0.1 0.48% Upscale Gas 100 21.0 21.0 20.7 -1.43% 20.6 -1.90%
Stack 4 02(4) Initial Values Final Values 

### 4/3/2008 731 

### 414/2008 746 Analyzer Cal System Cal System Cal System Cal System Cal Response Response, Response, Cal. Bias Response, Cal. Bias STACK D (4) Time (sec) PPM PPM 

### % ofSpan PPM % ofSpan Zero Gas 80 0 0.0 0.0 0.00% 0.0 0.00%**I,Jp~c_ale_~as_** 

### 80 21 21.0 20.7 -1.43% 20.6 -1.90%

-- - -------- ----------_.._------ - ------ 

### System Calibration Bias

### =[(System Cal. Response - Analyzer Cal. Response) 

### ISpan] x 100 Drift 

### =[(Final System Cal. Response - Initial System Cal Response) 

### I Span] x 100 

## O 2



## -----_._..

## _---_._--_._._._---_. Drift, Percent of

span 0.48% 0.00%

Drift, Percent of

span 0.48% -0.48%

Drift, Percent of

span 0.00%

, -0.48%

Drift, Percent of

span 0.00% -0.48%

# BARR Engineering Company Project Sample Loc. Date Operators Hibbing Taconite Furnace Line 3 ScrubberStack 1-4 

### 4/4/08 TYL Cvlinder Serial No. Certified Value Zero Gas CC176437 0.0 Low-range

Mid-range CC62111 5.05 CC106732 9.0 High-range

-------------- 

### ANALYZER CALIBRATION DATA Cal Date: 

### 3/31/08 Note: Difference must be less than 

### +1- 2 percent ofspan Stack 1 - C02(1) Analyzer Mod 

### I SN Model 200 CylinderValue Analyzer Span: 9.0 Zero Gas 0.0 Low - Range 0 Mid - Range 5.05 High - Range 9.0 Stack 2 - C02(2) Analyzer Mod 

### I SN Model 200 Cylinder Value Analyzer Span: 8.95 Zero Gas 0 Low - Range 0 Mid - Range 5.05 High - Range 8.95 Stack 3 - C02(3) Analyzer Mod 

### I SN Model 200 CylinderValue Analyzer Span: 8.95 Zero Gas 0 Low - Range 0 Mid - Range 5.05 High - Range 8.95 Stack 4 - C02(4) Analyzer Mod I SN Model 200 Cylinder Value Analyzer Span: 8.95 Zero Gas 0 Low - Range 0 Mid - Range 5.05 High - Range 8.95 Analyzer Calibration Response 0.0 5.0 9.0 Analyzer Calibration Response 0.0 5.0 9.0 Analyzer Calibration Response 0.0 5.0 9.0 Analyzer Calibration Response 0.0 5.0 9.0 Absolute Difference 0.0 0.0 0.1 0.1

- 

### Absolute Difference 0.0 0.0 0.0 0.05
Absolute Difference 0 0.0 0.0 0.05
Absolute Difference 0 0.0 0.0 0.05 

## EPA METHOD 3A CO2 

## CEMS ANALYZER CALIBRATION

SYSTEM CALIBRATION BIAS AND DRIFT DATA: Note: System Cal bias cannot exceed +1- 5 percent ofspan pre run period System Bias can not exceed +1- 7.5 percent at end ofperiod
Difference as

% of Span

0.00% 0.00% 0.78% 0.56%
Difference as

% ofSpan

0.00% 0.00% 0.56% 0.56%
Difference as

% ofSpan

0.00% 0.00% 0.56% 0.56%
Difference as

% of Span

0.00% 0.00% 0.56% 0.56% Drift check exceeding 3% span requires recalibration Stack 1 - C02(1) Initial Values Final Values 

### 4/3/2008 715 

### 4/4/2008 730 Cylinder Analyzer Cal System Cal System Cal System Cal System Cal Response Value Response, Response, Cal. Bias Response, Cal. Bias STACKA (1) Time (sec) PPM PPM PPM 

### % of Span PPM 

### %of Span Zero Gas 78 0.0 0.0 0.0 0.00% 0.0 0.00% Upscale Gas 76 5.05 5.0 4.9 -0.89% 4.9 -0.89% CO2 

### Stack 2 - C02(2) Initial Values Final Values 

### 4/3/2008 715 

### 4/4/2008 730 Cylinder Analyzer Cal System Cal System Cal System Cal System Cal Response Value Response, Response, Cal. Bias Response, Cal. Bias STACI< B (2) Time (sec) PPM PPM PPM % of Span PPM % of Span Zero Gas 78 0.0 0.0 0.1 1.12% 0.1 1.12% Upscale Gas 76 5.05 5.0 5.0 0.00% 5.0 0.00%

---------- 

### Stack 3 - C02(3) Initial Values Final Values 

### 4/3/2008 731 

### 4/4/2008 746 Cylinder Analyzer Cal System Cal System Cal System Cal System Cal Response Value Response, Response, Cal. Bias Response, Cal. Bias STACKA (1) Time (sec) PPM PPM PPM % of Span PPM 

### % of Span Zero Gas 78 0.0 0.0 0.1 1.12% 0.1 1.12% Upscale Gas 76 5.05 5.0 5.0 0.00% 4.9 -1.12%
Stack 4 - C02(4) Initial Values Final Values 

### 4/3/2008 731 

### 4/4/2008 746 Cylinder Analyzer Cal System Cal System Cal System Cal System Cal Response Value Response, Response, Cal. Bias Response, Cal. Bias STACKA (1) Time (sec) PPM PPM PPM % of Span PPM 

### % of Span Zero Gas 78 0.0 0.0 0.0 0.00% 0.0 0.00% Upscale Gas 76 5.05 5.0 4.9 -1.12% 4.8 -2.23%

-------- 

### System Calibration Bias 

### = [(System Cal. Response - AnalyzerCal. Response) 

### I Span] x 100 Drift 

### = [(Final System Cal. Response -Initial System Cal Response) 

### I Span] x 100 Drift, Percent of:

span 

# i 0.00% 0.00%


## I Drift, Percent ofiI



### span ! 

### 0.00% 

# I gOO,,/o j



### Drift, Percent of

span 0.00% -1.12%



## :

Drift, ! 

### Percent of

span ! 

### 0.00% 

# I**-1.1~"I0** 

### !

# BARR Engineering Company Project Sample Loc. Date Operators Hibbing Taconite Furnace Line 3 Scrubber Stack 1-4 

### 4/5/07 TYL Cylinder Serial No. Zero Gas CC176437 Low-range CC29081

Mid-ranQe CC86743 High:range

-- --- CC7380
ANALYZER CALIBRATION DATA Cal Date: 3/31108 Note: Difference must be less than 

### +1- 2 percent ofspan Stack 1 - NOx(l) Analyzer Mod 

### I SN 200 EH Cylinder Value Analyzer Span: 513 Zero Gas 0 Low - Range 91.5 Mid - Range 245 High - Range 513 Stack 2 - NOx(2) Analyzer Mod 

### I SN 200 EH Cylinder Value Analyzer Span: 513 Zero Gas 0 Low - RanQe 91.5 Mid - Range 245 

### '-- High-Range



# - 513

- Stack 3 - NOx(3) Analyzer Mod 

### I SN 200 EH Cylinder Value Analyzer Span: 513 Zero Gas 0 Low - RanQe 91.5 Mid - Range 245 High - Range 513 Stack 4 - NOx(4) Analyzer Mod 1SN 600CLD Cylinder Value Analyzer Span: 513 Zero Gas 0 Low- RanQe 91.5 Mid - Range 245 High - Range 513 Certified Value 0.0 91.5 245 513

---

Analyzer Calibration Absolute Response Difference

0.3 0.3 90.7 0.8 244.0 1.0 513.9 0.9 Analyzer Calibration Absolute Response Difference

0.1 0.1 90.7 0.8 243.0 2.0**514.~**___ 1.5 Analyzer Calibration Absolute Response Difference

0.2 0.2 90.6 0.9 245.0 0.0 513.0 0 Analyzer Calibration Absolute Response Difference

2.1 2.1 93.1 1.6 247.0 2.0 514.3 1.3 

### EPA METHOD 7E NOx CEMS ANALYZER CALIBRATION

SYSTEM CALIBRATION BIAS AND DRIFT DATA: Note: System Cal bias cannot exceed 

### +1- 5 percent ofspan pre run period System Bias can not exceed 

### +1- 7.5 percent at end of period
Difference as

% ofSpan

0.06% 0.16% 0.19% 

### Q,18 1 

### X,
Difference as 

### % ofSpan

0.02% • 0.16%

• 0.39% i 0.29% 

## I
Difference as % ofSpan

0.04%, 0.18% 0.00% 0.00%
Difference as

% of Span

0.41% 0.31% 0.39% 0.25% I Drift check exceeding 3% span requires recalibration Initial Values 

### 4/4/2008 730 Cylinder Analyzer Cal System Cal System Cal Response Value Response, Response, Cal. Bias STACK A (1) Time (sec) PPM PPM PPM 

### % ofSpan Zero Gas 150 0.0 0.3 0.3 0.00% Upscale Gas 160 245 244.0 228.3 -3.06% 91.5 90.7 84.6 -1.19%

- Initial Values 

### 4/4/2008 730 Cylinder Analyzer Cal System Cal System Cal Response Value Response, Response, Cal. Bias STACK B (2) Time (sec) PPM PPM PPM %ofSfJan Zero Gas 145 0.0 0.1 0.1 0.00% Upscale Gas 150 245.0 243.0 231.3 -2.28% 91.5 90.7 85.2 -1.07% Initial Values 

### 4/4/2008 746 Cylinder Analyzer Cal System Cal System Cal Response Value Response, Response, Cal. Bias STACI<C (3) Time (sec) PPM PPM PPM % ofSpan Zero Gas 120 0.0 0.1 1.1 0.19% Upscale Gas 135 245 245 231.3 -2.67%
Initial Values 

### 4/4/2008 746 Cylinder Analyzer Cal System Cal System Cal Response Value Response, Response, Cal. Bias STACK 0 (4) Time (sec) PPM PPM PPM % ofSpan Zero Gas 85 0.0 2.1 1.7 _Q,Q81% Upscale Gas 60 245 247.0 246.6 -O,OBIX) System Calibration Bias 

### = [(System Cal. Response - Analyzer Cal. Response) 

### I Span] x 100 Drift 

### =[(Final System Cal. Response - Initial System Cal Response) 

### 1Span] x 100 Final Values 

### 4/5/2008 745 System Cal System Cal Drift, Response, Cal. Bias Percent of

PPM % ofSpan span 0.0 -0.06% -0.06% 228.7 -2.98% 0.08% 84,5 -1.21% -0.02%

- Final Values 

### 4/5/2008 745 System Cal Systern Cal Drift, Response, Cal. Bias Percent of

PPM 

### % ofSpan span 0.0 -0.02% -0.02% 231.8 -2.18% 0.10% 85.1 -1.09% -0.02% Final Values 

### 4/5/2008 800 System Cal System Cal Drift, Response, Cal. Bias Percent of

PPM 

### % ofSpan span 0.3 0.04%, -0.16% 231.1 -2.71% -0.04%
Final Values 

### 4/5/2008 800 System Cal System Cal Drift, Response, Cal. Bias Percent of

PPM 

### % ofSpan span 1.9 -0.04% 0.04% 244.8 -0.43% -0.35% NOx :

# BARR Engineering Company Project Sample Loc. Date Operators HibbingTaconite Furnace Line 3 ScrubberStack 1-4 4/5/07 

## TYL Cylinder Serial No. Zero Gas CC176437 Low-ranqe

Mid-ranqe CC106732 Hinh-ranne CC62111
ANALYZER CALIBRATION DATA Cal Date: 3/31/08 Note: Difference must be less than +/- 2 percent of span Stack 1 - 02(1) Analyzer Mod / SN Model 200 CylinderValue Analyzer Span: 21.0 Zero Gas 0.0 Low - Range 0 Mid - Range 8.98 High - Range 21.0 Stack 2 - 02(2) Analyzer Mod 1SN Model 200 CylinderValue Analyzer Span: 21 Zero Gas 0 Low - Range 0 Mid - Range 8.98 High - Range 21

--------------- 

### Stack 3 - 02(3) Analyzer Mod 

### 1SN Model 200 Cylinder Value Analyzer Span: 21 Zero Gas 0 Low - Range 0 Mid - Range 8.98

----- 

### ljigh - Raf]ge 21 

## , Stack 402(4) Analyzer Mod 

### 1SN Model 200 CylinderValue AnalyzerSpan: 21 Zero Gas 0 Low - Ranqe 0 Mid - Range 8.98 High - Range 21 Certified Value 0.0 9.0 21.0

Analyzer Calibration Absolute Response Difference 0.0 0.0 0.0 0.0 9.0 0.0 21.0 0.0 Analyzer Calibration Absolute Response Difference 0.0 0.0 0.0 9.0 0.0**~10**



### __ 

## a

_ .._-- 

### Analyzer Calibration Absolute Response Difference 0.0 0 0.0 9.0 0.0 21.0 0 Analyzer Calibration Absolute Response Difference 0.0 0 0.0 9.0 0.0 21.0 0 

### EPA METHOD 3A O2 

### CEMS ANALYZER CALIBRATION

SYSTEM CALIBRATION BIAS AND DRIFT DATA: Note: System Cal bias cannot exceed +1- 5 percent ofspan pre run period System Bias can not exceed +1- 7.5 percent at end ofperiod
Difference as



### %of Span

0.00% 0.00% 0.10% 0.00%
Difference as

% ofSpan

0.00% 0.00% 0.10%

_ 0.00%_

Difference as



## 'Yo of Span

0.00% 0.00% 0.10% 0.00%
Difference as



### % of Span

0.00% 0.00% 0.10% 0.00% Drift check exceeding 3% span requires recalibration Stack 1 - 02(1) Initial Values Final Values 4/4/2008 730 

### 4/5/2008 745 Cylinder Analyzer Cal System Cal System Cal System Cal System Cal Response Value Response, Response, Cal. Bias Response, Cal. Bias STACKA(1) Time (sec}. PPM PPM PPM % of Span PPM 

### % of Span Zero Gas 78 0.0 0.0 0.1 0.48% 0.1 0.48% Upscale Gas 76 21.0 21.0 20.7 -1.43% 20.6 -1.90%
Stack 2 - 02(2) Initial Values Final Values 

### 4/4/2008 730 

### 4/5/2008 745 Cylinder Analyzer Cal System Cal System Cal System Cal System Cal Response Value Response, Response, Cal. Bias Response, Cal. Bias STACK B (2) Time (sec) PPM PPM PPM 

### %of Span PPM % of Span Zero Gas 0.0 0.0 0.1 0.48% 0.0 0·.00% Upscale Gas 76 21.0 21.0 20.7 -1.43% 20.6 -1.90%
Stack 3 - 02(3) Initial Values Final Values 

### 4/4/2008 746 

### 4/5/2008 800 Cylinder Analyzer Cal System Cal System Cal System Cal System Cal Response Value Response, Response, Cal. Bias Response, Cal. Bias STACI< C (3) Time (sec) PPM PPM PPM % of Span PPM 

### % of Span Zero Gas 95 0.0 0.0 0.1 0.48% 0.1 0.48%**~ps~eGas_**

### -----.!.()()--**"---~1.~**

### __ 21.0 20.6 -1.90% L 

### 20.5 -2.38%

- ----_.._----- - - - 

### Stack 4 02(4) Initial Values Final Values 

### 4/4/2008 746 

### 4/5/2008 800 Analyzer Cal System Cal System Cal System Cal System Cal Response Response, Response, Cal. Bias Response, Cal. Bias STACK D (4) Time (sec) PPM PPM 

### % of Span PPM 

### % of SIJan Zero Gas 80 0 0.0 0.0 0.00% 0.0 0.00% Upscale Gas 80 21 21.0 20.6 -1.90% 20.6 -1.90% System Calibration Bias 

### = [(System Cal. Response - Analyzer Cal. Response) 

### 1Span] x 100 Drift

### = [(Final System Cal. Response -Initial System Cal Response) 

### 1Span] x 100 

## O 2 

### Drift,

Percent of

span 0.00% -0.48%

Drift, Percent of

span -0.48% -0.48%

-



### Drift, Percent of

span 0.00% -0.48%

: 

### Drift, Percent of

span 0.00% 0.00%

# BARR Engineering Company Project Sample Loc. Date Operators Hibbing Taconite Furnace Line 3 Scrubber Stack 1-4 

### 4/5/07 TYL Cylinder Serial No. Zero Gas CC176437 Low-range

Mid-range CC62111

____**l::ligh-raf1g~_** 

## ,--

- -- --- CC10QU 

### 2
ANALYZER CALIBRATION DATA Cal Date: 

### 3/31/08 Note: Difference must be less than 

### +1- 2 percent of span Stack 1 - C02(1) Analyzer Mod 

### 1SN Model 200 Cylinder Value Analyzer Span: 9.0 Zero Gas 0.0 Low - Range 0 Mid - Range 5.05 liigl1
__**Rallg~_** 

# - ------- 9.0 Stack 2 - C02(2) Analyzer Mod 

### 1SN Model 200 CylinderValue Analyzer Span: 8.95 Zero Gas 0 Low - Range 0 Mid - Range 5.05 High - Range 8.95 Stack 3 - C02(3) Analyzer Mod 

### 1SN Model 200 CylinderValue Analyzer Span: 8.95 Zero Gas 0 Low - Range 0 Mid - Range 5.05

..**----~** Higll- RClflge 8.95 Stack 4 - C02(4) Analyzer Mod 

### 1SN Model 200 CylinderValue Analyzer Span: 8.95 Zero Gas 0 Low - Range 0 Mid - Range 5.05 High - Range 8.95 Certified Value 0.0 5.05 9.0

-----

Analyzer Calibration Absolute Response Difference 0.0 0.0 0.0 5.0 0.1 9.0 0.1



# - Analyzer Calibration Absolute Response Difference 0.0 0.0 0.0 5.0 0.0 9.0 0.05 Analyzer Calibration Absolute Response Difference 0.0 0 0.0 5.0 0.0 9.0 0.05 Analyzer Calibration Absolute Response Difference 0.0 0 0.0 5.0 0.0 9.0 0.05 

### EPA METHOD 3A CO2 

### CEMS ANALYZER CALIBRATION

SYSTEM CALIBRATION BIAS AND DRIFT DATA: Note: System Cal bias cannot exceed 

### +1- 5 percent ofspan pre run period System Bias can not exceed 

### +1- 7.5 percent at end ofperiod
Difference as

% of Span

0.00% 0.00% 0.78% 0.56%
Difference as

% ofSpan

0.00% 0.00% 0.56%

• 0.56%
Difference as



### % ofSpan

0.00% 0.00% 0.56% i 0.56% 

# I
Difference as

% of Span

0.00% 0.00% 0.56% 0.56% Drift check exceeding 3% span requires recalibration Stack 1 - C02(1 ) Initial Values Final Values 

### 4/4/2008 730 

### 4/5/2008 745 Cylinder Analyzer Cal System Cal System Cal System Cal System Cal Response Value Response, Response, Cal. Bias Response, Cal. Bias STACK A(1) Time (sec) PPM PPM PPM % of Span PPM % of Span Zero Gas 78 0.0 0.0 0.0 0.00% 0,0 0.00% UpscaleQ<ls
__ 76 5.05 5.0 4.9 -0.89% 4.8 -2.01% 

### CO2 Stack 2 - C02(2) Initial Values Final Values 

### 4/4/2008 730 

### 4/5/2008 745 Cylinder Analyzer Cal System Cal System Cal System Cal System Cal Response Value Response, Response, Cal. Bias Response, Cal. Bias STACK B (2) Time (sec) PPM PPM PPM 

### % of Span PPM 

### % of Span Zero Gas 78 0.0 0.0 0.1 1.12% 0.1 1.12% Upscale Gas 76 5.05 5.0 5.0 0.00% 5.0 0.00%
Stack 3 - C02(3) Initial Values Final Values 

### 4/4/2008 746 

### 4/5/2008 800 Cylinder Analyzer Cal System Cal System Cal System Cal System Cal Response Value Response, Response, Cal. Bias Response, Cal. Bias STACK A (1) Time (sec) PPM PPM PPM 

### % of Soan PPM 

### % of Soan Zero Gas 78 0.0 0.0 0.1 1.12% 0.0 0.00% UJJsc.a.le Gas 76. 5.05 5.0
___ 4.9 -1.12% 4.9 -1.12%
Stack 4 - C02(4) Initial Values Final Values 

### 4/4/2008 746 

### 4/5/2008 800 Cylinder Analyzer Cal System Cal System Cal System Cal System Cal Response Value Response, Response, Cal. Bias Response, Cal. Bias STACK A (1) Time (sec) PPM PPM PPM 

### % ofSoan PPM % of Soan Zero Gas 78 0.0 0.0 0.0 0.00% 0.0 0.00% Upscale Gas 76 5.05 5.0 4.8 -2.23% 4.8 -2.23%

- System Calibration Bias

# =[(System Cal. Response - Analyzer Cal. Response) 

### 1Span] x 100 Drift 

### = [(Final System Cal. Response - Initial System Cal Response) 

### 1Span] x 100 Drift, Percent of

span 0.00% -1.12%

Drift, Percent of

span 0.00% 0.00%

Drift, Percent of

span -1.12% 0.00%

Drift, Percent of

span 0.00% 0.00% 

# I

,

# BARR Engineering Company Hibbing Taconite Project Sample Loc. Date Operators Furnace Line 3 Scrubber Stacll 1-4 41610B TYL Cylinder Serial No. Zero Gas CC176437 Low-range CC290Bl

Mid-ranqe CCB6743 High-range CC7380
ANALYZER CALIBRATION DATA Cal Date: 3131108 Note: Difference must be less than +1- 2 percent ofspan Stack 1 - NOx(1 ) Analyzer Mod 

### I SN 200 EH Cylinder Value Analyzer Span: 513 Zero Gas 0 Low - Range 91.5 Mid - Range 245 High - Range 513 Stack 2 - NOx(2) Analyzer Mod I SN 200 EH Cylinder Value Analyzer Span: 513 Zero Gas 0 Low - Range 91.5 Mid - Range 245**~** High - Range 

# - 513 Stack 3 - NOx(3) Analyzer Mod 

### I SN 200 EH Cylinder Value Analyzer Span: 513 Zero Gas 0 Low - Range 91.5 Mid - Range 245 High - Range 513 Stack 4 - NOx(4) Analyzer Mod 

### I SN 600CLD Cylinder Value Analyzer Span: 513 Zero Gas 0 Low - Ranqe 91.5 Mid - Range 245 High - Range 513 Certified Value 0.0 91.5 245 513

Analyzer Calibration Absolute Response Difference

0.3 0.3 90.7 O.B 244.0 1.0 513.9 0.9 Analyzer Calibration Absolute Response Difference

0.1 0.1 90.7 O.B 243.0 2.0 514.5 1.5 Analyzer Calibration Absolute Response Difference

0.2 0.2 90.6 0.9 245.0 0.0 513.0 0 Analyzer Calibration Absolute Response Difference 2.1 2.1 93.1 1.6 247.0 2.0 514.3 1.3 

### EPA METHOD 7E NOx CEMS ANALYZER CALIBRATION

SYSTEM CALIBRATION BIAS AND DRIFT DATA: Note: System Cal bias cannot exceed +1- 5 percent ofspan pre run period System Bias can not exceed +1- 7.5 percent at end ofperiod
Difference as



### %ofSpan

0.06% 0.16% 0.19% 

# I 0.18%
Difference as % ofSpan

0.02% 0.16% 0.39% 0.29%
Difference as 

### % ofSpan

0.04% O.lB% 0.00% 0.00%
Difference as

% of Span

0.41% 0,31%) 0.39% 0.25% Drift check exceeding 3% span requires recalibration Initial Values 4151200B 745 Cylinder Analyzer Cal System Cal System Cal Response Value Response, Response, Cal. Bias STACK A (1) Time (sec) PPM PPM PPM 

### % ofSpan Zero Gas 150 0.0 0.3 0.0 -0.06% Upscale Gas 160 245 244.0 228.7 -2.98% 91.5 90.7 84.5 -1.21%

- Initial Values 41512008 745 Cylinder Analyzer Cal System Cal System Cal Response Value Response, Response, Cal. Bias STACK B (2) Time (sec) PPM PPM PPM % ofSpan Zero Gas 145 0.0 0.1 0.0 -0.02% Upscale Gas 150 245.0 243.0 231.8 -2.18% 91.5 90.7 85.1 -1.09% Initial Values 41512008 800 Cylinder Analyzer Cal System Cal System Cal Response Value Response, Response, Cal. Bias STACI< C (3) Time (sec) PPM PPM PPM 

### % ofSpan Zero Gas 120 0.0 0.1 0.3 0.04% Upscale Gas 135 245 245 231.1 -2.71%
Initial Values 41512008 800 Cylinder Analyzer Cal System Cal System Cal Response Value Response, Response, Cal. Bias STACK 

### 0 (4) Timejsec) PPM PPM PPM 

### % ofSpan Zero Gas 85 0.0 2.1 1.9 -0.04% Upscale Gas 60 245 247.0 244.8 -0.43% System Calibration Bias 

### =[(System Cal. Response - Analyzer Cal. Response) 

### I Span] x 100 Drift

# =[(Final System Cal. Response - Initial System Cal Response) I Span] x 100 Final Values 4161200B 1430 System Cal System Cal Drift, Response, Cal. Bias Percent of

PPM 

### % ofSpan span 0.5 0.04% 0.10% 229.9 -2.75% 0.23% B4.1 -1.29% -O.OB% Final Values 41612008 1430 System Cal System Cal Drift, Response, Cal. Bias Percent of

PPM 

### % ofSpan span 0.1 O.OOv/" 0.02% 228.5 -2.83% -0.64% 84.4 -1.23% ·Q,141 Yc) Final Values 41612008 1445 System Cal System Cal Drift, Response, Cal. Bias Percent of

PPM 

### % ofSpan span 0.7 0.12% 0.08% 228.8 -3.16% -0.45%
Final Values 41612008 1445 System Cal System Cal Drift, Response, Cal. Bias Percent of

PPM 

### % ofSpan span 1.9 -0.04% 0.00% 244.6 -0.47% -0.04% NOx

# BARR Engineering Company Project Sample Loc. Date Operators Hibbing Taconite Furnace Line 3 Scrubber Stack 1-4 

### 4/6/08 TYL Cvlinder Serial No. Zero Gas CC176437 Low-ran!=)e

Mid-ran!=)e CC106732 High-range CC62111

-- 

### ANALYZER CALIBRATION DATA Cal Date: 

### 3/31/08 Note: Difference must be less than +1- 2 percent of span Stack 1 - 02(1) Analyzer Mod 

### I SN Model 200 CylinderValue Analyzer Span: 21.0 Zero Gas 0.0 Low - Ran!=)e 0 Mid - Range 8.98 _High - Range 21.0 Stack 2 - 02(2) Analyzer Mod 

### I SN Model 200 CylinderValue Analyzer Span: 21 Zero Gas 0 Low - Ranqe 0 Mid - Range 8.98 21 Certified Value 0.0 9.0



## ___ :1LO

Analyzer Calibration Absolute Response Difference 0.0 0.0 0.0 0.0 9.0 0.0 21.0 0.0 Analyzer Calibration Absolute Response Difference 0.0 0.0 0.0 9.0 0.0 21.0 0

--- 

### High - Rang

### EJ_

-------- - ---- - - --------- 

### Stae!1 3 - 02(3) Analyzer Analyzer Mod 

### I SN Model 200 CylinderValue Calibration Absolute Analyzer Span: 21 Response Difference Zero Gas 0 0.0 0 Low - Ran!=)e 0 0.0 Mid - Range 8.98 9.0 0.0 High - Range 21 21.0 0 Stack 4 02(4) Analyzer Analyzer Mod I SN Model 200 CylinderValue Calibration Absolute Analyzer Span: 21 Response Difference Zero Gas 0 0.0 0 Low - Range 0 0.0 Mid- Range 8.98 9.0 0.0

-----**Higl~-** 

### Rall9l3
__

## ---~ 21.0 0

-------- ----- 

### EPA METHOD 3A O2 

### CEMS ANALYZER CALIBRATION

SYSTEM CALIBRATION BIAS AND DRIFT DATA: Note: System Cal bias cannot exceed +1- 5 percent ofspan pre run period System Bias can not exceed +1- 7.5 percent at end of period
Difference as

% of Span

0.00% 0.00% 0.10% 0.00%
Difference as

% of Span

0.00% 0.00% 0.10% 0.00%
Difference as

% of Span

0.00% 0.00% 0.10% 0.00%
Difference as



### 'Yo of Span

0.00% 0.00% 0.10% 0.00% Drift check exceeding 3% span requires recalibration Stack 1 - 02(1) Initial Values Final Values 

### 4/5/2008 745 

### 4/6/2008 1430 Cylinder Analyzer Cal System Cal System Cal System Cal System Cal Response Value Response, Response, Cal. Bias Response, Cal. Bias STACKA (1) Time (sec) PPM PPM PPM % ofSpan PPM % ofSpan Zero Gas 78 0.0 0.0 0.1 0.48% 0.1 0.48% Upscale**G~_** 

### 76
__ 21.0 21.0 20.6**_:~90%** 

### _____ 20.7 -1.43%

------ --------- --- --- ---- ---- 

### Stack 2 - 02(2) Initial Values Final Values 

### 4/5/2008 745 

### 4/6/2008 1430 Cylinder Analyzer Cal System Cal System Cal Systern Cal System Cal Response Value Response, Response. Cal. Bias Response, Cal. Bias STACK B (2) Time (sec) PPM PPM PPM 0;" 

### of Span PPM % of Span Zero Gas 0.0 0.0 0.0 0.00% 0.0 0.00% Upscale Gas 76 21.0 21.0 20.6 -1.90% 20.6 -1.90%
Stack 3 - 02(3) Initial Values Final Values 

### 4/5/2008 800 

### 4/6/2008 1445 Cylinder Analyzer Cal System Cal System Cal System Cal System Cal Response Value Response, Response, Cal. Bias Response, Cal. Bias STACKC (3) Time (sec) PPM PPM PPM % of Span PPM 

### % of SQ8n Zero Gas 95 0.0 0.0 0.1 0.48% 0.1 0.48% Upscale Gas 100 21.0 21.0 20.5 -2.38% 20.5 -2.38%

- -- ---**-~** 

### Stack 4 02(4) Initial Values Final Values 

### 4/5/2008 800 

### 4/6/2008 1445 Analyzer Cal System Cal System Cal System Cal System Cal Response Response, Response, Cal. Bias Response, Cal. Bias STACKD (4) Time (sec) PPM PPM 

### % of Span PPM % of Span Zero Gas 80 0 0.0 0.0 0.00% 0.0 0.00% Upscale Gas 80 21 21.0 20.6 -1.90% 20.6 -1.90% System Calibration Bias

### =[(System Cal. Response - Analyzer Cal. Response) 

### I Span] x 100 Drift

### =[(Final System Cal. Response - Initial System Cal Response) 

### I Span] x 100 

## O 2 

### Drift.

Percent of

span 0.00% 0.48%

Drift, Percent of

span 0.00% 0.00% I



### Drift, Percent ofI



### span 0.00% 0.00%

Drift, Percent of

span 0.00% 0.00%

# BARR Engineering Company Hibbing Taconite Project Sample Loc. Date Operators Furnace Line 3 Scrubber Stack 1-4 

### 4/6/08 TYL Cylinder Serial No. Zero Gas CC176437 Low-range

Mid-range CC62111 High-range CC106732
ANALYZER CALIBRATION DATA Cal Date: 3/31108 Note: Difference must be less than 

### +1- 2 percent of span Stack 1 - C02(1) Analyzer Mod 

### I SN Model 200 Cylinder Value Analyzer Span: 9.0 Zero Gas 0.0 Low - Range 0 Mid - Range 5.05

---.High - Range 

### 9.0

----- Stack 2 - C02(2) Analyzer Mod 

### I SN Model 200 CylinderValue Analyzer Span: 8.95 Zero Gas 0 Low - Range 0 Mid - Range 5.05

-- High - Bange _--.?95 Stack 3 - C02(3) Analyzer Mod 

### I SN Model 200 CylinderValue Analyzer Span: 8.95 Zero Gas 0 Low - Range 0 Mid - Range 5.05 High - Range 8.95 Stack 4 - C02(4) Analyzer Mod 

### I SN Model 200 CylinderValue Analyzer Span: 8.95 Zero Gas 0 Low- Ran\le 0 Mid - Range 5.05 High - Range 8.95 Certified Value 0.0 5.05 9.0

Analyzer Calibration Absolute Response Difference 0.0 0.0 0.0 5.0 0.1 9.0 0.1 Analyzer Calibration Absolute Response Difference 

### 0.0 0.0 

### 0.0 5.0 0.0 9.0 

### 0.05

---- Analyzer Calibration Absolute Response Difference 0.0 0 0.0 5.0 0.0 9.0 0.05 Analyzer Calibration Absolute Response Difference 0.0 0 0.0 5.0 0.0 9.0 0.05 

### EPA METHOD 3A CO2 

### CEMS ANALYZER CALIBRATION

SYSTEM CALIBRATION BIAS AND DRIFT DATA: Note: System Cal bias cannot exceed 

### +1- 5 percent of span pre run period System Bias can not exceed +1- 7.5 percentat end of period Drift check exceeding 3% span requires recalibration Difference as



### % of Span

0.00% 0.00% 

### 0.78'1'0 0.56%
Difference as 

### % of Span

0.00% 

### 0.00% 0.56% 

### 0.56%

----Difference as 

### % of Span

0.00% 0.00% 0.56% 0.56%
Difference as



### % of Span

0.00% 0.00% 0.56% 0.56% Stack 1 - C02(1) Initial Values Final Values 

### 4/5/2008 745 

### 4/612008 1430 Cylinder Analyzer Cal System Cal System Cal System Cal System Cal Response Value Response, Response, Cal. Bias Response, Cal. Bias STACI< A (1) Time (sec) PPM PPM PPM % of Span PPM % of Span Zero Gas 78 0.0 0.0 0.0 0.00% 0.0 0.00% Upscale Gas 76 5.05 5.0 4.8 -2.01% CO, Stack 2 - C02(2) Initial Values Final Values 

### 4/5/2008 745 

### 4/6/2008 1430 Cylinder Analyzer Cal System Cal System Cal System Cal System Cal Response Value Response, Response, Cal. Bias Response, Cal. Bias STACK B (2) Time (sec) PPM PPM PPM % ofSpan PPM % of Span Zero Gas 78 0.0 0.0 0.1 1.12% 0.2 2.23% ""'pscale Gas 76 5.05 5.0 5.0 0.00% 5.0 0.00%
Stack 3 - C02(3) Initial Values Final Values 

### 4/5/2008 BOO 

### 4/6/2008 1445 Cylinder Analyzer Cal System Cal System Cal System Cal System Cal Response Value Response, Response, Cal. Bias Response, Cal. Bias STACKA(l) Time (sec) PPM PPM PPM 

### % ofSpan PPM % of Span Zero Gas 78 0.0 0.0 0.0 0.00% 0.0 0.00% Upscale Gas 76 5.05 5.0 4.9 -1.12% 4.9 -1.12%
Stack 4 - C02(4) Initial Values Final Values 

### 4/5/2008 800 

### 4/61200B 1445 Cylinder Analyzer Cal System Cal System Cal System Cal System Cal Response Value Response, Response, Cal. Bias Response, Cal. Bias STACK A 

### (1) Time (sec) PPM PPM PPM 

### % of Span PPM 

### % of Span Zero Gas 78 0.0 0.0 0.0 0.00% 0.0 0.00% Upscale Gas 76 5.05 5.0 4.8 -2.23% 4.B -2.23% System Calibration Bias 

### = [(System Cal. Response - Analyzer Cal. Response) 

### I Span] x 100 Drift 

### = [(Final System Cal. Response - Initial System Cal Response) 

### 1Span] x 100 Drift, i Percent of

span 0.00%

Drift, I Percent of

span 1.12% 0.00% I


## I Drift, I Percent of

span 0.00% 0.00% I I

Drift, Percent 

### 01

span . 0.00% I 0.00%

# BARR Engineering Company Hibbing Taconite Project Sample Loc. Date Operators Furnace Line 3 Scrubber Stack 1-4 417108 TYL Cylinder Serial No. Zero Gas CC176437 Low-range CC29081

Mid-ranqe CC86743 High-range CC7380
.. ANALYZER CALIBRATION DATA Cal Date: 3131108 Note: Difference must be less than +1- 2 percent ofspan Stack 1 - NOx(l) Analyzer Mod I SN 200 EH CylinderValue Analyzer Span: 513 Zero Gas 0 Low - Range 91.5 Mid - Range 245 High - Range 513 Stack 2 - NOx(2) Analyzer Mod I SN 200 EH Cylinder Value Analyzer Span: 513 Zero Gas 0 Low - Ran!]e 91.5 Mid - Range 245

---**High-R.?.'1.~** 513 Stack 3 - NOx(3) Analyzer Mod I SN 200 EH Cylinder Value Analyzer Span: 513 Zero Gas 0 Low - Range 91.5 Mid - Range 245 High - Range 513 Stack 4 - NOx(4) Analyzer Mod I SN 600CLD Cylinder Value Analyzer Span: 513 Zero Gas 0 Low- Range 91.5 Mid - Range 245 High - Range 513 Certified Value 0.0 91.5 245 513

Analyzer Calibration Absolute Response Difference

0.3 0.3 90.7 0.8 244.0 1.0 513.9 0.9 Analyzer Calibration Absolute Response Difference

0.1 0.1 90.7 0.8 243.0 2.0 514.5 1.5 Analyzer Calibration Absolute Response Difference

0.2 0.2 90.6 0.9 245.0 0.0 513.0 0 Analyzer Calibration Absolute Response Difference

2.1 2.1 93.1 1.6 247.0 2.0 514.3 1.3 

### EPAMETHOD7ENOxCEMS ANALYZER CALIBRATION

SYSTEM CALIBRATION BIAS AND DRIFT DATA: Note: System Cal bias cannot exceed +1- 5 percent ofspan pre run period System Bias can not exceed +1- 7.5 percent at end ofperiod
Difference as 

### % ofSpan

O.06(X) 0.16% 0.19% 0.18%
Difference as 

### % ofSpan

0.02% 0.16% 0.39% 0.29%
Difference as



### % ofSpan

0.04% 0.18% 0.00% 0.00%
Difference as % ofSpan

0.41% 0.31% 0.39% 0.25% Drift check exceeding 3% span requires recalibration Initial Values 41612008 1430 Cylinder Analyzer Cal System Cal System Cal Response Value Response, Response, Cal. Bias STACKA(1) Time (sec) PPM PPM PPM 

### % ofSpan Zero Gas 150 0.0 0.3 0.5 0.04% Upscale Gas 160 245 244.0 229.9 -2.75% 91.5
__ , 90.7**.~84.1** -1.29% Initial Values 41612008 1430 Cylinder Analyzer Cal System Cal System Cal Response Value Response, Response, Cal. Bias STACI< B (2) Time (sec) PPM PPM PPM % ofSpan Zero Gas 145 0.0 0.1 0.1 0.00% Upscale Gas 150 245.0 243.0 228.5 -2.83% 91.5 90.7 84.4 -1.23% Initial Values 41612008 1445 Cylinder Analyzer Cal System Cal System Cal Response Value Response, Response, Cal. Bias STACK C (3) Time(sec) PPM PPM PPM 

### % ofSpan Zero Gas 120 0.0 0.1 0.7 0.12% Upscale Gas 135 245 245 228.8 -3.16%
Initial Values 4/612008 1445 Cylinder Analyzer Cal System Cal System Cal Response Value Response, Response, Cal. Bias STACI< D (4) Time (sec) PPM PPM PPM % ofSpan Zero Gas 85 0.0 2.1 1.9 -0.04% Upscale Gas 60 245 247.0 244.6 -0.47% System Calibration Bias 

### =[(System Cal. Response - Analyzer Cal. Response) I Span] x 100 Drift 

### =[(Final System Cal. Response - Initial System Cal Response) I Span] x 100 Final Values 41712008 915 System Cal System Cal Drift, Response, Cal. Bias Percent of

PPM 

### % ofSpan span 0.4 0.02% -0.02% 228.1 -3.10% -0.35% 84.1**·1,2~(y?_** 0.00%

- ...._-_._-- Final Values 41712008 915 System Cal System Cal Drift, Response, Cal. Bias Percent of

PPM 

### % ofSpan span 0.8 0.14% 0.14% 224.8 -3.55% -0.72% 82.5 -1.60% -0.37'Yo Final Values 41712008 930 System Cal System Cal Drift, Response, Cal. Bias Percent of

PPM 

### % ofSpan span 0.0 -0.01% -0.13% 227.9 -3.33% -0.18%
Final Values 41712008 930 System Cal System Cal Drift, Response, Cal. Bias Percent of

PPM % ofSpan span 1.9 -0.04% 0.001% 243.3 -0.72% -0.25% 

### NOx

# BARR Engineering Company Project Sample Loc. Date Operators Hibbing Taconite Furnace Line 3 Scrubber Stack 1-4 417108 TYL Cylinder Serial No. Certified Value Zero Gas CC176437 Low-range

Mid-range CC106732 High-range CC62111
ANALYZER CALIBRATION DATA Cal Date: 3131108 Note: Difference must be less than +1- 2 percent of span Stack 1 - 02(1) Analyzer Mod I SN Model 200 Cylinder Value Analyzer Span: 21.0 Zero Gas 0.0 Low- Ranr:Je 0 Mid - Range 8.98 High - Range 21.0 Stack 2 - 02(2) Analyzer Mod/ SN Model 200 CylinderValue Analyzer Span: 21 Zero Gas 0 Low - Ranr:Je 0 Mid - Range 8.98 High - Range 21 Stack 3 - 02(3) Analyzer Mod I SN Model 200 CylinderValue Analyzer Span: 21 Zero Gas 0 Low - Range 0 Mid - Range 8.98 High - Range 21 Stack 4 02(4) Analyzer Mod I SN Model 200 CylinderValue Analyzer Span: 21 Zero Gas 0 Low - Range 0 Mid - Range 8.98 High - Range 21 0.0 9.0 21.0

Analyzer Calibration Response 0.0 0.0 9.0 21.0 Analyzer Calibration Response 0.0 9.0 21.0 Analyzer Calibration Response 0.0 9.0 21.0 Analyzer Calibration Response 0.0 9.0 21.0 Absolute Difference 0.0 0.0 0.0 0.0
Absolute Difference 0.0 0.0 0.0 0
Absolute Difference 0 0.0 0.0 0
Absolute Difference 0 0.0 0.0 0 

## EPA METHOD 3A

# o.z CEMS ANALYZER CALIBRATION

SYSTEM CALIBRATION BIAS AND DRIFT DATA: Note: System Cal bias cannot exceed +1- 5 percent ofspan pre run period System Bias can not exceed +1- 7.5 percent at end of period
Difference as

% of Span

0.00% 0.00% 0.10% 0.00%
Difference as

% ofSpan

0.00% 0.00% 0.10% 

# I 0.00% 

# I
I 

### Difference as

% of Span

0.00% 0.00% 0.10% 0.00%
Difference as

% of Span

0.00% 0.00% 0.10% 0.00% Drift check exceeding 3% span requires recalibration Stack 1 - 02(1) Initial Values Final Values 41612008 1430 41712008 915 Cylinder Analyzer Cal System Cal Systern Cal System Cal System Cal Response Value Response, Response, Cal. Bias Response, Cal. Bias STACKA (1) Time (sec) PPM PPM PPM 

### % of Span PPM % of Span Zero Gas 78 0.0 0.0 0.1 0.48% 0.1 0.48% Upscale Gas 76 21.0 21.0 20.7 -1.43% 20.6 -1.90%
Stack 2 - 02(2) Initial Values Final Values 41612008 1430 41712008 915 Cylinder Analyzer Cal System Cal System Cal System Cal System Cal Response Value Response, Response, Cal. Bias Response, Cal. Bias STACK B (2) Time (sec) PPM PPM PPM 

### % ofSpan PPM % of Span Zero Gas 0.0 0.0 0.0 0.00% 0.1 0.48% Upscale Gas 76 21.0 21.0 20.6 -1.90% 20.5 -2.38%
Stack 3 - 02(3) Initial Values Final Values 41612008 1445 41712008 930 Cylinder Analyzer Cal System Cal System Cal System Cal System Cal Response Value Response, Response, Cal. Bias Response, Cal. Bias STACI< C (3) Time (sec) PPM PPM PPM % ofSpan PPM % ofSpan Zero Gas 95 0.0 0.0 0.1 0.48% 0.1 0.48% Upscale Gas 100 21.0 21.0 20.5 -2.38% 20.5 -2.38%

---------------- 

### Stack 4 02(4) Initial Values Final Values 41612008 1445 41712008 930 Analyzer Cal System Cal System Cal System Cal System Cal Response Response, Response, Cal. Bias Response, Cal. Bias STACI< 0 (4) Time (sec) PPM PPM % ofSpan PPM % ofSpan Zero Gas 80 0 0.0 0.0 0.00% 0.0 0.00% Upscale Gas 80 21 21.0 20.6 -1.90% 20.5 -2.38%

------- ------- 

### System Calibration Bias 

### = [(System Cal. Response - AnalyzerCal. Response) I Span] x 100 Drift

### = [(Final System Cal. Response - Initial System Cal Response) I Span] x 100 

### O2 

### Drift, Percent of

span 0.00% -0.48% I

Drift, Percent of

span 0.48% :0.480;0

Drift, Percent of

span 0.00% 0.00%

Drift, Percent of

span 0.00% -0.48%

----------------

# BARR Engineering Company Project Sample Loc. Date Operators Hibbing Taconite Furnace Line 3 Scrubber Stack 1-4 4/7108 TYL Cylinder Serial No. Certified Value Zero Gas CC176437 0.0 Low-range

Mid-range CC62111 5.05 ---':iigh-rangEl__
_ CC 1 06'7:l_2
__

### ---~ ...- 

### ANALYZER CALIBRATION DATA Cal Date: 3/31/08 Note: Difference must be less than +1- 

### 2 percent of span Stack 1 - C02(1) Analyzer Mod 

### I SN Model 200 CylinderValue Analyzer Span: 9.0 Zero Gas 0.0 Low-**Ran~e** 

### 0 Mid - Range 5.05

__ Higl'l..-**Ran~** 

### .. _ _ _ 

## ._!J.Q. Stack 2 - C02(2) Analyzer Mod I 

### SN Model 200 Cylinder Value Analyzer Span: 8.95 Zero Gas 0 Low - RanQe 0 Mid - Range 5.05 High - Range 8.95 Stack 3 - C02(3) Analyzer Mod 

### I SN Model 200 CylinderValue Analyzer Span: 8.95 Zero Gas 0 Low -**Ran~e** 

### 0 Mid - Range 5.05

_.High - Range

----

## ~~- Stack 4 - C02(4) Analyzer Mod I 

### SN Model 200 CylinderValue Analyzer Span: 8.95 Zero Gas 0 Low - Range 0 Mid - Range 5.05 Higll..-l3a 

### ,r19_

e
__ ..- 8.95

--- 

### Analyzer Calibration Response 0.0 5.0 9.0 Analyzer Calibration Response 0.0 5.0 9.0 Analyzer Calibration Response 0.0 5.0**_J~_** 

### Analyzer Calibration Response 0.0 5.0 9.0 Absolute Difference 0.0 0.0 0.1 0.1
Absolute Difference 0.0 0.0 0.0 0.05
Absolute Difference 0 0.0 0.0 0.05

--- 

### Absolute Difference 0 0.0 0.0 0.05 

## EPA METHOD 3A CO2 

## CEMS ANALYZER CALIBRATION

SYSTEM CALIBRATION BIAS AND DRIFT DATA: Note: System Cal bias cannot exceed +/- 

### 5percent ofspan pre run period System Bias can not exceed +/- 

### 7.5 percent at end of period
Difference as

% ofSpan

0.00% 0.00% 0.78% 0.56%
Difference as

% of Span

0.00% 0.00% 0.56% 0.56%
Difference as

% of Span

0.00% 0.00% 0.56% 0.56%
Difference as

% of Span

0.00% 0.00% 0.56% I 

### 0.56% 

# i Drift checl< exceeding 3% span requires recalibration Stack 1 - C02(1) Initial Values Final Values 4/6/2008 1430 4/7/2008 915 Cylinder Analyzer Cal System Cal System Cal System Cal System Cal Response Value Response, Response, Cal. Bias Response, Cal. Bias STACKA(1) Time (sec) PPM PPM PPM % of Span PPM 

### % of Span Zero Gas 78 0.0 0.0 0.0 0.00% 0.0 0.00% Upscale Gas 76 5.05 5.0 4.8 -2.01% 4.8 -2.01% CO2 

### Stack 2 - C02(2) Initial Values Final Values 4/6/2008 1430 4/7/2008 915 Cylinder Analyzer Cal System Cal System Cal System Cal System Cal Response Value Response, Response, Cal. Bias Response, Cal. Bias STACI< B (2) Time (sec) PPM PPM PPM % of Span PPM % of Span Zero Gas 78 0.0 0.0 0.2 2.23% 0.1 f12%**Upscale~<ls** 

### 76
..... 5.05 5.0 5.0 0.00% 5.0 0.00%
Stack 3 - C02(3) Initial Values Final Values 4/6/2008 1445 4/7/2008 930 Cylinder Analyzer Cal System Cal System Cal System Cal System Cal Response Value Response, Response, Cal. Bias Response, Cal. Bias STACK A (1) Time (sec) PPM PPM PPM % of Span PPM % of Span Zero Gas 78 0.0 0.0 0.0 0.00% 0.0 0.00% Upscale Gas 76 5.05 5.0 4.9 -1.12% 4.9 -1.12%
Stack 4 - C02(4) Initial Values Final Values 4/6/2008 1445 4/7/2008 930 Cylinder Analyzer Cal System Cal System Cal System Cal System Cal Response Value Response, Response, Cal. Bias Response, Cal. Bias STACK A (1) Time (sec) PPM PPM PPM 

### % of Soan PPM % ofSpan Zero Gas 78 0.0 0.0 0.0 0.00% 0.0 0.00% Upscale Gas 76 5.05 5.0 4.8 -2.23% 4.8 -2.23% System Calibration Bias 

### =[(System Cal. Response - Analyzer Cal. Response) 

### I Span] x 100 Drift 

### =[(Final System Cal. Response - Initial System Cal Response) I 

### Span] x 100 Drift, Percent of

span 0.00% 0.00%

Drift, Percent of

span -1.12% 0.00%

Drift, Percent of

span 0.00% 0.00%

Drift, Percent of

span 0.00% 0.00%
.

# BARR Engineering Company Project Sample Loc. Date Operators Hibbing Taconite Furnace Line 3 Scrubber Stack 1-4 418108 TYL Cylinder Serial No. Zero Gas CC176437 Low-ran[je CC29081

Mid-range CC86743 High-range CC7380
ANALYZER CALIBRATION DATA Cal Date: 3131108 Note: Difference must be less than +1- 2 percent ofspan Stack 1 - NOx(l) Analyzer Mod I SN 200 EH Cylinder Value Analyzer Span: 513 Zero Gas 0 Low - Range 91.5 Mid - Range 245 High - Range 513 Stack 2 - NOx(2) Analyzer Mod 

### I SN 200 EH Cylinder Value Analyzer Span: 513 Zero Gas 0 Low - Range 91.5 Mid - Range 245

----------- High - Range
__ 513

- Stack 3 - NOx(3) Analyzer Mod 

### I SN 200 EH CylinderValue Analyzer Span: 513 Zero Gas 0 Low - Range 91.5 Mid - Range 245 High - Range 513 Stack 4 - NOx(4) Analyzer Mod I SN 600CLD Cylinder Value Analyzer Span: 513 Zero Gas 0 Low- Ranqe 91.5 Mid - Range 245 High - Range 513 Certified Value 0.0 91.5 245 513

Analyzer Calibration Absolute Response Difference 0.3 0.3 90.7 0.8 244.0 1.0 513.9 0.9 Analyzer Calibration Absolute Response Difference 0.1 0.1 90.7 0.8 243.0 2.0 514.5 1.5 Analyzer Calibration Absolute Response Difference

0.2 0.2 90.6 0.9 245.0 0.0 513.0 0 Analyzer Calibration Absolute Response Difference 2.1 2.1 93.1 1.6 247.0 2.0 514.3 1.3 

### EPA METHOD 7E NOx CEMS ANALYZER CALIBRATION

SYSTEM CALIBRATION BIAS AND DRIFT DATA: Note: System Cal bias cannot exceed +1- 5 percent ofspan pre run period System Bias can not exceed +1- 7.5 percent at end ofperiod
Difference as

% ofSpan

0.06% 0.16% 0.19% 0.18%

I Difference as ' % ofSpan

0.02% 0.16% 0.39%

, .. 0.29%

Difference as 

### % ofSpan

0.04% 0.18% 0.00% 0.00%
Difference as

% of Span

0.41% 0.31% 0.39% 0.25% Drift check exceeding 3% span requires recalibration Initial Values 41712008 915 Cylinder Analyzer Cal System Cal System Cal Response Value Response, Response, Cal. Bias STACI<A(l) Time (sec) PPM PPM PPM % ofSpan Zero Gas 150 0.0 0.3 0.4 0.02% Upscale Gas 160 245 244.0 228.1 -3.10% 91.5 90.7 84.1 -1.29% Initial Values 41712008 915 Cylinder Analyzer Cal System Cal System Cal Response Value Response, Response, Cal. Bias STACKB (2) Time (sec) PPM PPM PPM % ofSpan Zero Gas 145 0.0 0.1 0.8 0.14% Upscale Gas 150 245.0 243.0 224.8 -3.55% 91.5 90.7 82.5 -1.60% Initial Values 41712008 930 Cylinder Analyzer Cal System Cal System Cal Response Value Response, Response, Cal. Bias STACI< C (3) Time(sec) PPM PPM PPM % ofSpan Zero Gas 120 0.0 0.1 0.0 -0.01% c!:!.Pscale Gas 135 245 245 227.9 -3.33%
Initial Values 41712008 930 Cylinder Analyzer Cal System Cal System Cal Response Value Response, Response, Cal. Bias STACK 

### 0 (4) Time (sec) PPM PPM PPM % of Soan Zero Gas 85 0.0 2.1 1.9 -0.04% Upscale Gas 60 245 247.0 243.3 -0.72% System Calibration Bias

### =[(System Cal. Response - Analyzer Cal. Response) 

### I Span] x 100 Drift

# =[(Final System Cal. Response - Initial System Cal Response) 

### I Span] x 100 Final Values 41812008 730 System Cal System Cal Drift, Response, Cal. Bias Percent of

PPM % ofSpan span 0.6 0.06% 0.04% 230.0 -2.73% 0.37% 84.9 -1.13% O.16{% Final Values 41812008 730 System Cal System Cal Drift, Response, Cal. Bias Percent of

PPM % ofSpan span 0.7 0.12% -0.02% 229.7 -2.59% 0.96% 82.3 -1.64% -0.04% Final Values 41812008 745 System Cal System Cal Drift, Response, Cal. Bias Percent of

PPM % ofSpan span 0.5 0.08% 0.09% 230.4 -2.85% 0.49%
Final Values 41812008 745 System Cal System Cal Drift, Response, Cal. Bias Percent of

PPM %ofSoan span 2.6 0.10% 0.14% 245.6 -0.27% 0.45% NOx

# BARR Engineering Company Project Sample Loc. Date Operators Hibbing Taconite Furnace Line 3 ScrubberStack 1-4 

### 4/8/08 TYL Cylinder Serial No. Zero Gas CC176437 Low-ranqe

Mid-ranqe CC106732 Hiqh-ranqe CC62111
ANALYZER CALIBRATION DATA Cal Date: 

### 3/31/08 Note: Difference must be less than 

### +1- 2 percent of span Stack 1 - 02(1) Analyzer Mod 

### I SN Model 200 CylinderValue Analyzer Span: 21.0 Zero Gas 0.0 Low - Ranqe 0 Mid - Range 8.98**High:~_allgEl** 

### ____ _ _____ __ 21.0 Stack 2 - 02(2) Analyzer Mod 

### I SN Model 200 CylinderValue Analyzer Span: 21 Zero Gas 0 Low - Range 0 Mid - Range 8.98 High - Range 21 Stack 3 - 02(3) Analyzer Mod 

### I SN Model 200 Cylinder Value Analyzer Span: 21 Zero Gas 0 Low - Ranqe 0 Mid - Range 8.98 l-1igl1.-i=<ange 21

----------------- 

### Stack 402(4) Analyzer Mod 

### I SN Model 200 Cylinder Value Analyzer Span: 21 Zero Gas 0 Low- Range 0 Mid - Range 8.98

____ ljigh-=-f<a_llg.El....__
__ 21 Certified Value 0.0 9.0 21.0

Analyzer Calibration Absolute Response Difference 0.0 0.0 0.0 0.0 9.0 0.0 21.0 0.0 Analyzer Calibration Absolute Response Difference 0.0 0.0 0.0 9.0 0.0 21.0 0 Analyzer Calibration Absolute Response Difference 0.0 0 0.0 9.0 0.0 21.0 0 Analyzer Calibration Absolute Response Difference 0.0 0 0.0 9.0 0.0 21.0 0 

## EPA METHOD 3A O2 

## CEMS ANALYZER CALIBRATION

SYSTEM CALIBRATION BIAS AND DRIFT DATA: Note: System Cal bias cannot exceed +/- 

### 5 percent ofspan pre run period System Bias can not exceed +/- 

### 7.5 percent at end ofperiod
Difference as

% ofSpan

0.00% 0.00% 0.10% 0.00%
Difference as

% ofSpan

0.00% 0.00% 0.10% 0.00%
Difference as

% of Span

0.00% 0.00% 0.10% 0.00%
Difference as



### % of Span

0.00% 0.00% 0.10% 0.00% Drift check exceeding 3% span requires recalibration Stack 1 - 02(1) Initial Values Final Values 

### 4/7/2008 915 

### 4/8/2008 730 Cylinder Analyzer Cal System Cal System Cal System Cal System Cal Response Value Response, Response, Cal. Bias Response, Cal. Bias STACKA (1) Time (sec) PPM PPM PPM 

### % ofSpan PPM 

### % of Span Zero Gas 78 0.0 0.0 0.1 0.48% 0.1 0.48% Upscale Gas 76 21.0 21.0 20.6 -1.90% 20.9 , -0.48'/,
Stack 2 - 02(2) Initial Values Final Values 

### 4/7/2008 915 

### 4/8/2008 730 Cylinder Analyzer Cal System Cal System Cal System Cal System Cal Response Value Response, Response, Cal. Bias Response, Cal. Bias STACK B (2) Time (sec) PPM PPM PPM % of Span PPM % of Span Zero Gas 0.0 0.0 0.1 0.48% 00 0.00% Upscale Gas 76 21.0 21.0 20.5 -2.38% 20.7 -1.43%
Stack 3 - 02(3) Initial Values Final Values 

### 4/7/2008 930 

### 4/8/2008 745 Cylinder Analyzer Cal System Cal System Cal System Cal System Cal Response Value Response, Response, Cal. Bias Response, Cal. Bias STACKC (3) Time (sec) PPM PPM PPM 

### % of Span PPM 

### % of Span Zero Gas 95 0.0 0.0 0.1 0.48% 0.2 0.95% Upscale Gas 100 21.0 21.0 20.5 -2.38% 20.8 -0.95%
Stack 4 02(4) Initial Values Final Values 

### 4/7/2008 930 

### 4/8/2008 745 Analyzer Cal System Cal System Cal System Cal System Cal Response Response, Response, Cal. Bias Response, Cal. Bias STACK 0 (4) Time (sec) PPM PPM % of Span PPM % of Span Zero Gas 80 0 0.0 0.0 0.00% 0.0 0.00% Upscale Gas 80 21 21.0 20.5 -2.38% 20.8 -0.95% System Calibration Bias 

### = [(System Cal. Response - Analyzer Cal. Response) 

### I Span] x 100 Drift 

### =[(Final System Cal. Response -Initial System Cal Response) 

### I Span] x 100 

## O 2 

### Drift,

Percent of

span 0.00% 1.43%

Drift, Percent of

span -0.48% 0.95%

Drift, Percent of

span 0.48% 1.43%

Drift, Percent of

span 0.00% 1.43%

# BARR Engineering Company Project Sample Loc. Date Operators Hibbing Taconite Furnace Line 3 Scrubber Stack 1-4 

### 4/8/08 TYL Cylinder Serial No. Zero Gas CC176437 Low-ranfje

Mid-ranfje CC62111

___ J::Iigh-range
____ CC106732
ANALYZER CALIBRATION DATA Cal Date: 3/31/08 

### Note: Difference must be less than 

### +1- 2 percent of span Stack 1 - C02(1) Analyzer Mod 

### I SN Model 200 CylinderValue Analyzer Span: 9.0 Zero Gas 0.0 Low - Ranfje 0 Mid - Range 5.05 High- Range 9.0 Stack 2 - C02(2) Analyzer Mod 

### I SN Model 200 Cylinder Value Analyzer Span: 8.95 Zero Gas 0 Low - Range 0 Mid - Range 5.05 High- Range 8.95 Stack 3 - C02(3) Analyzer Mod I 

### SN Model 200 Cylinder Value Analyzer Span: 8.95 Zero Gas 0 Low - Ranfje 0 Mid - Range 5.05 High- Range 8.95

--- -------- 

### Stack 4 - C02(4) Analyzer Mod I 

### SN Model 200 Cylinder Value Analyzer Span: 8.95 Zero Gas 0 Low- Ranfje 0 Mid - Range 5.05 High- Range 8.95 Certified Value 0.0 5.05 9.0

Analyzer Calibration Response 0.0 5.0 9.0 Analyzer Calibration Response 0.0 5.0 9.0 Analyzer Calibration Response 0.0 5.0 9.0 Analyzer Calibration Response 0.0 5.0 9.0

- ---- 

### Absolute Difference 0.0 0.0 0.1 0.1
Absolute Difference 0.0 0.0 0.0 0.05
Absolute Difference 0 0.0 0.0 0.05
Absolute Difference 0 0.0 0.0 0.05 

### EPA METHOD 3A CO2 

### CEMS ANALYZER CALIBRATION

SYSTEM CALIBRATION BIAS AND DRIFT DATA: Note: System Cal bias cannot exceed 

### +1- 5 percent ofspan pre run period System Bias can not exceed 

### +1- 7.5 percent at end of period 

# I Difference as i

'Y., 

### of Span

0.00% 0.00% 0.78% 0.56%

• 

### Difference as



### % of Span

0.00% · 

### 0.00%

• 

### 0.56% 

# I 0.56% 

# I
Difference as



### % of Span

0.00% 0.00% 0.56% 0.56%

------ 

### Difference as

% 

### of Span

0.00% 0.00% 0.56% 0.56% Drift check exceeding 3% span requires recalibration Stack 1 - C02(1) Initial Values Final Values 

### 4/7/2008 915 

### 4/8/2008 730 Cylinder Analyzer Cal System Cal System Cal System Cal System Cal Response Value Response, Response, Cal. Bias Response, Cal. Bias STACK Aj11 Time (sec) PPM PPM PPM 

### %of Span PPM 

### % of Span Zero Gas 78 0.0 0.0 0.0 0.00% 0.0 0.00% Upscale Gas

- 

### 76 5.05
____ 5.0 4.8 -2.01% 4.9 -0.89%

-------- ------ 

### CO2 

### Stack 2 - C02(2) Initial Values Final Values 

### 4/7/2008 915 

### 4/8/2008 730 Cylinder Analyzer Cal System Cal System Cal System Cal System Cal Response Value Response, Response, Cal. Bias Response, Cal. Bias STACK B (2) Time (sec) PPM PPM PPM % 

### of Span PPM 

### % of Span Zero Gas 78 0.0 0.0 0.1 1.12% 0.1 1.12% Upscale Gas 76 5.05 5.0 5.0 0.00% 5.0 0.00%
Stack 3 - C02(3) Initial Values Final Values 

### 4/7/2008 930 

### 4/8/2008 745 Cylinder Analyzer Cal System Cal System Cal System Cal System Cal Response Value Response, Response, Cal. Bias Response, Cal. Bias STACKA(1) Time (sec) PPM PPM PPM % 

### of Span PPM % 

### of Span Zero Gas 78 0.0 0.0 0.0 0,00% 0.0 0.00% Upscale Gas 76 5.05 5.0 4.9 -1.12% 5.0 0.00%
Stack 4 - C02(4) Initial Values Final Values 

### 4/7/2008 930 

### 4/8/2008 745 Cylinder Analyzer Cal System Cal System Cal System Cal System Cal Response Value Response, Response, Cal. Bias Response, Cal. Bias STACK A (1) Time (sec) PPM PPM PPM 

### % ofSpan PPM % of Span Zero Gas 78 0.0 0.0 0.0 0.00% -0.1 -1.12% Upscale Gas 76 5.05 5.0 4.8 -2.23% 4.9 -1.12% System Calibration Bias 

### = [(System Cal. Response - Analyzer Cal. Response) 

### I Span] x 100 Drift 

### =[(Final System Cal. Response - Initial System Cal Response) 

### I Span] x 100 Drift, Percent of

span 0.00% 1.12%

Drift, Percent of

span 0.00% 0.00% i



### Drift, Percent of

span 0.00% 1.12%

Drift, Percent of

span -1.12% 1.12%

## PitotTube 

## Number:**_~3-....:1**

## __ Length:_-=3:...;ft.:...-_
1. Are face openings perpendicularto tube axis? 

# m YES (

## go

## to 2) 

# o NO (go to 

## 1a)

2. Arefaceopenings parallel to longitudinal axls? 

# I$l YES (

### go to 3) 

# o NO (goto 2a) 

## S-Type PitotTube 

# GeometryCheck
Function: Inspection Date: 

# z;?

# fo 8' 

## Technician: 

## ftfl/

# 1<7. M-5 Probe 1a. IfNO, Is angle lessthan 10"? 

# o YES ( go to 2)**~** I

# --~--. I I 

# , 

# .

2a. IfNO, 15 

### angle lessthan 

### 5"? 

# o YES ( go 

## to 3) 

# o NO (discontinue use)

# --~--. ! 

## !



# o NO (discontinue use) 

# "'1"'"**~**

# ....**~"""** I

## ---E:-----l~-- 

# .",,,,...''''''''

., .....- El

# ~i'~3:=~~-----,-- 

# .__ ------:1;--**~'"** 

# -Q-**.---~-:=::** 

# . .,.,. 

# Jr"""L.

3. Are legs ofequallenglh? 

# ILl YES (go to 4) 

# o NO (go to 3a)

# --t----~~~----~=>-----
4. Are center-Ilnes 

### oflegs coincident? 

# r¥l YES ( go

### to5) 

# o NO(go

### to 4a)

# --~----~~----<~~-----
5. Does this pltot tube pass all ofthe above criteria? 

# -**3~-­** 

# ,+:-_.ww;**~** 

# ____ ':''l!_

3a. IfNO, is 

### difference less than 

### 1/8 inch? 

# o YES 

### (go

## to 4) ONO

## (discontinu~ use)



### 4a. IfNO, 

### are center-lines offace openings lessthan 

### 1/32 inch? 

# o YES ( go

### to 5) 

# 0 NO 

### (discontinue use)



# [$I YES 

# o NO

### PilotTube Number: 

## Length:**~r**

# FUnCtiOn:~ J Free

1. Are face 

### openings perpendicularto 

### tuba axis?

# ~ES(9ot02) 0 NO (goto1a) 

### ;,,.

.....,.,,! I

# ~-t--:--X--:--t------ I r_ 

## I 

# r-**~** 

## -::O---l
2..Are face 

### openings parafielto longitudinal axls? 

## ...g( YES (

### go to 3) 

# 0 NO (go

### to 2a)

....**::~** 

### 3. Are legs

# ofequal length? , "

# ~ YES ( go 

### to 4)

# !~i: 0 NO (go to 3a) ;;:t



### 4. Are center-lines oflegs coincident? 

# Q;rYES 

### (go to 

### 5) 

# 0 NO (go

### to 4a)

## --k----~~----<-~----·
5. Does this pitettUDe 

### pass aaofthe above criteria? 

## S-Type PitotTube GeometryCheck ·Inspection Date: 

# L -/(**~o**

# 1- Technician: 

# TfL

1a. If NO, 

### is**an~le** 

### lessthan 10'? 

# o YES (got02) 

# o NO (discontinue use)

IN. 1· 

# fL.3!**--~--. --~--.**  I I I ) I • .. •



### 2a.**~** 

### NO, is angle less than 5"'? 

### DYES(go

## to 3) 

# o NO (discontinue use) 

# •. -Q.- .L_**~**

### .---~-


## '- 

# --**~~-** 

# w -- 

# ____ - l=- 

# '"'-

3a. If

### NO, is 

### difference less than 1/8 

### ii1ch? 

### DYES (goto

### 4) 

# o NO (discontinue use) tv
.. 

## Ef-===:-;G3

## ~_-:

48. 

### If NO. are**center~ines** 

### oiface openings less than 1/32 

### Inch? 

# o YES ( 

### goto 5) 

# o NO (discontinue 

### use)

DYES 

### ONO

## PitotTube Number: Length: l{1

# FunctiorG5P~~ Free

1. Are 

## !ace openings perpendicular

## totube axis?**~YES** (goto 

### 2) 

# 0 NO (goto 

### 13) 

## 1\--- 

## I I

# '-~-f--:-~-:--t------- 

# . 

# - .**~~-:** 

# . .
2. 

### Are face openings 

### parnJlel to 

### longitudinal axis? 

# AYES(goto 

### 3) 

# 0 NO (go 

### to 2a)

## S-Type PitotTube GeometryCheck Inspectlon Date: ( -

# ~ -

# O~ Technician: 

## MoM!< 

## 'Z...

1a. If NO. is angle lessthan 1O.? 

# o YES ( go 

### to 2)
. 

# o NO (discontlnue 

### use)**.~ ~:-.** **~ ~** 

## .

# -~~--.**--~--.**

!**~ ~**  

## !

Za 

### IfNO. Is 

### angle less than 5""'7 

### DYES(go

### to 3) 

# o NO (discontinue use)

# ~_ d:::d

# ~.**--=$;f_-_-fl:{~:~-.**

# """, ¢ 

# ::.u___**b=~:3.~"5**

3. Are 

### legs ofequal length? oo..YES ( 

### go to 4) 

# .:::Jfw.



# o NO (goto 3a)



### 4. Are cenler-lines oflegs coincident?

## ~'ye:S{go(05) 

# o NO (go to 4a)

# --&----~~---~-)-----
5. Does this pttot lube pass all of

### theabove criteria?

# ~--'~3~'- .M
__

---- - *:=--

32. 

### IrNO. isdifference lessthan 

### 1/8 Inch? 

### DYES(go to 

### 4) 

# o NO 

### (discontinue use) 

# v -F

# -----if**~-**
4a. 

### IfNO. are center·linesofface openings less than 1/32 

### inch? DYES (goto 5) 

# 0 NO 

### (discontinue use)

# ~YES ONO

## PitotTube Number: Length: 

# If'

1. Are.**~** 

### 0;:>enln95 perpendiculartotube axis? 

# :q YES (go 102) 

# 0 NO (go

### to 1a) 

## - I I r......**~**

# ~-~----- I toc:a I

### J--~--:--: 

# . , 2. 

### Are face 

### openings parallelto longitudinal axis?

# ~ES(got03) O· NO(got02a)



# .......

# "'" S-Type PitotTube GeometryCheck Inspection Dale: 

# IJ.
-

# '3 1-0

# +- Technician: 

# T l( L

1a. If NO, 

### is angle lessthan 10'? 

# o YES (go(02)



### 2a. IfNO, isangle lessthan 

### 5-.>? 

# o YES 

### (got03) 

# o NO 

### (discontinue

### use)



# o NO (discontinue use)

# ,,~~**Ed~E-=7~1-~---:--lf{~;~" t.~O,** **---~---------~~** 

# ,**;..J~_** 

# -I: -f:

3. 

### Are legsofeqvallength? 

# 1Sf YES (goto 4) 

# o NO 

### (go

### to 3a)

4. Are center-lines of

### legs coincident?

# ~YES(90105J 0 NO (go 

### to4a)

## t---~~----(?~-----
5. Doesthis pilottube pas!; all ofthe above criteria? 

### ........-::--- Technician Signature: 

# S**~ ~~** 

# U-~ Reviewed by: 3a. If

### NO, is difference

### less than 1t8

### inch? 

# o YES (got04) 

# o NO (discontinue use)


### F---

4a. IfNO, are**center~ines**

### offace openings 

### less than 1/32 

### incll? 

# o YES (go 105) 

# 0 NO 

### (cliscontinue use)

C!(YES oNO

## REFERENCE STANDARDS HartScientific 9103-A

## sInA1B289 HartScientific9140 sIn A1B085 

# Temperature Calibration Points Reference Deg F (To) ProbeTemp (deg F) ReferenceTemp (deg R) deg F 

## + 460 ProbeTemp (deg R), deg F +460 Difference (degrees) % DiffAbs.T Is difference lessthan 1.5% at all measured pOints?


## 1700 

# 1600 1500 '; 1400 oil**~** 

## 1300 ::l

## ~ 

## 1200

# ~ 1100 w 

## :;; 1000 ...l 

### a. ::l 

# 900 

# § :E 

## 800 a:: w 

## i= 700 600 500 400 

# THERMOCOUPLE CALIBRATION
THERMOCOUPLE ID TC4-1 Cal Date: 1/9/2008 

## CALIBRATION TECHNICIAN:

# M·5 Probe AGA TRACEABILITY Report No. A180718 ReportNo.A182024 

# 32 32 31.1 

# 492 491.1

0.9 0.2% 

## YES 

# 212 212 212 672 672



# o 0.0% 

## DATE 12/26/2007 12/25/2007 

# 400 400 

# 399 860 859

1 

# 0.1% LABORATORY HartScientific HartScientific 

# 650 650 650 

# 1110 1110



# o 0.0% Ambient 70 

# 70.5 530 

## 530.5 -0.5 0.1%



## 400 500 600 700 800 900 1000 1100 1200 1300 1400 1500 1600 1700 REFERENCETEMPERATURE, deg.R 

## Are extrapolated limits lessthan 1.5%? Ifnotacceptable, describe corrective action: Technician signature QA signature 

## YES FAHRENHEIT CALIBRATION RANGE 

## -20 1200

# THERMOCOUPLE CALIBRATION 

# BARR THERMOCOUPLE ID Cal Date: 

## 12/31/2007 

# TC4-2 M-5 Probe MMK2 REFERENCE STANDARDS HartScientific 9103-A

## sIn A1B289 HartScientific 9140 

## sIn MB086 

# Temperature Calibration Points Reference Deg F (To) Probe Temp (deg F) 

## Reference Temp (deg R) deg F 

## +460 Probe Temp (deg R). deg F + 460 Difference (degrees) % DiffAbs. T Is difference lessthan 1.5% at all measured pOints? 

## 1700 1600 1500**~** 

## 1400 il**~** 

## 1300 ::;)

### ~ 

## 1200

# ~ 1100 w 

## :;; 1000 ..J 0. 

# 5 900 

# g :iE 

## 800 

# '" w 

## ;: 700 

## 600 500 400 TRACEABILITY ReportNo. A1 B0718 ReportNo. A 1B2024 

# 32 212 31.7 212 31.4 212 491.7 672 491.4 672

0.3 0 0.1% 0.0% YES 

## CALIBRATION TECHNICIAN: DATE LABORATORY 

## 12/26/2007 HartScientific 

## 12/26/2007 HartScientific 

# 400 650 Ambient 400 650 69.9 400 650 69.7 860 1110 529.9 860 1110 529.7

0 0 0.2 0.0% 0.0% 0.0%



## 400 500 600 700 800 900 1000 1100 1200 1300 1400 1500 1600 1700 REFERENCETEMPERATURE. deg.R 

## Are extrapolated limits less than 1.5%? YES If not acceptable. describe corrective action: Technician Signature QA signature 

# Y .n ,**cJ"'4.~~** 

# , FAHRENHEIT CALIBRATION RANGE -20 1200

# THERMOCOUPLE CALIBRATION 

# BARR THERMOCOUPLE 10 Cal Date: 

## 1/912008 CALIBRATION TECHNICIAN: 

## TC3·1 

# M·5 Probe

AGA REFERENCE STANDARDS Hart Scientific 9103·A 

## sIn A1B289 HartScientific 9140 

## sIn A1B086 Temperature Calibration Points Reference Deg F 

## (To) ProbeTemp (deg F) 

## Reference Temp (deg R) deg 

## F +

## 460 Probe Temp (de9 R), deg 

## F+

## 460 Difference (degrees) 

## % DiffAbs. T Is difference lessthan 

## 1.5% at all measured TRACEABILITY Report No. A1B0718 Report No. A1B2024 

# 32 212 32 212 32.8 212 492 672 492.8 672 -0.8 0 0.2% 0.0% points? YES
1700 

## 1600 1500

## ~ 1400 

## .g gl1300 ::>

### ~ 

## 1200

## ~ 1100 w 

## : 1000 

## it 

# is 900 

# g :E 

## 800 

# '"**~** 700 

## 600 500 400 DATE LABORATORY 

## 1212612007 HartScientific 

## 12/26/2007 HartScientific 

## 400 

# 650 Ambient 

## 400 650 70 397 634 70.8 860 1110 530 857 1094 530.8

3 16 -0.8 0.3% 1.4% 0.2%

400 500 600 700 800 900 1000 1100 1200 1300 1400 1500 1600 1700 REFERENCETEMPERATURE, deg.R 

## Are extrapolated limits less 

## than 1.5%7 YES Ifnot acceptable, describe corrective action: Technician signature QAsignature FAHRENHEIT CALIBRATION RANGE 

## ·20 1200

# THERMOCOUPLE CALIBRATION 

# BARR THERMOCOUPLE 10 TC3-2 Cal Date: 

## 1/7/2008 

# M-5 Probe CALIBRATION TECHNICIAN: MMK2 REFERENCE STANDARDS TRACEABILITY DATE LABORATORY HartScientific 9103-AsInA1 B289 Report No. A1B0718 

## 12126/2007 HartScientific HartScientific 9140 sInA1B086 Report No. A1 B2024 

## 12126/2007 HartScientific 

# Temperature Calibration Points 

# 32 212 

# 400 650 Ambient Reference Deg F (To) 

## 31.8 212 400 650 70 Probe Temp (deg F) 

## 31.5 211 393 641 69.5 ReferenceTemp (deg R) deg F 

## +

## 460 491.8 672 860 1110 530 Probe Temp (deg R), deg 

## F +

## 460 491.5 671 853 1101 529.5 Difference (degrees) 

## 0.3 1 7 9 0.5 % DiffAbs. T 

## 0.1% 0.1% 0.8% 0.8% 0.1% Is difference less than 

## 1.5% at all measured points? YES 

# THERMOCOUPLE CALIBRATION 1700 1600 1500

## ~ 1400 

# "**~** 

## 1300 ::>

### ~ 

## 1200 w 

## l1! 1100 w 

# :u 1000 ..J Q. 

# 5 900 

# g :;; 800 

# '"**~** 700 600 

## 500 400 400 500 600 700 800 900 1000 1100 1200 1300 1400 1500 1600 1700 REFERENCETEMPERATURE, deg.R 

## Are extrapolated limits less than 

## 1.5%? YES Ifnot acceptable, describe corrective action: Technician signature QA signature FAHRENHEIT CALIBRATION RANGE 

## 1500 -20 1200

# BARR Engineering Company 

# PYROMETER CALIBRATION**?-~** Pyrometer Number: C\-\ ,- 

# i:,

# ~1 C 

# (fll/A.!,·
...,"" Pir 1'1) Date: 

# 3-- l.
. 6 

# g Pyrometer Reference:

# c...t-**~\;.~** 

# ;**tl..:O~**- 

# -s1"L Technician: 

# p.**!6.:::>~..sVVI "~\CI\-**  (0,-)1'1 (,(,390
Reference Pyrometer 

# 1000 

# v--t/A950 900 850 800 750 700 650 600 550 500 450 

# "\;1 400 350 300 250 200
.... L1 

# 150 

# I<;2. if;, 100 

# j0\.C:;- 50 

# EJ)' '7SO 

# 1. 0(,.. 

# -50 

# -(...0', f:f6
Notes: 

# (jZ.\ljJ)

# rQ~&geV::**~** 

# &r tC**Lw-~'G\rtJ ~/**  f?tyJ\;J,'o-C**~~.** 

# T**~j)s.**

# BARR Engineering Company
Pyrometer Number: 

# C\4 -S-fG Pyrometer Reference: 

# cl-**~t**

# -jQt.'C

# r--.3 i

# z. 00\4**('~39o** 

## Reference 

# 1000 950 900 850 800 750 700 650 600 550 500 450 400 350 300 250 200 150 100 50 0 -50 

# PYROMETER CALIBRATION

Date: 

# .5 ' & -(.)**~** Technician: 

# PJ20sSth/i\qyPyrometer 

# q-J)A-**~~** 

# '-\0·\ .

# <..

# -c.. 350,

# -,-z.. 3c

# i,\**~** 

# Z5Ll{ Qj

# z:.~\ 

# ,of152.,1-<':'**10'\,()~ 5IrC[~**  

# () , ll-;-



# --**y~** 

# .05

# BARR Engineering Company Pyrometer Number: 

# eJ.\**~** 

# l\. '/cPyrometer Reference: Ll-3¢c\<- • 

# i,m(:

-g

# i2-

## G~i**G~f>"jo** Reference 

# 1000 950 900 850 800 750 700 650 600 550 500 450 400 350 300 250 200 150 100 50 

# a ·50 Notes: 

# PYROMETER 

# CALIBRATION

Date:**.~,. ~.** **~15'** 

## Technician: 

# 'j).

# \4,ss.vV'i\\<UY
Pyrometer 

# !'J\

# (l-

\ 

# yo' ,i**~** 

# 3m.,') ',ot. \'1' 

# ZS-l. L-jy 

# l.c')
. 

# it:., 

# \ £JL. 

# 10

101, 1-:;- t:;2. ()\ 

# i.\<6

Lf

# 7. <7

# ~

# BARR Engineering Company
Pyrometer Number:

## q~ 

# -**3,~** 

# 'f'- Pyrometer Reference: Ci -

# ~l -;0::0(-':5Il j;

## 01ci

# Me

# 390 Reference 

# 1000 950 900 850 800 750 700 650 600 550 500 450 400 350 300 250 200 150 100 50 0 -50 Notes: 

# PYROMETER 

# CALIBRATION

Date: 

# :3
-**~** 

# -.**~**

# 't Technician: 

# P.**i'~"iS.S(.t\M** ; 

# IleAC
Pyrometer 

## t'-J

# I/>r**~lt** 

# Yol,O\**3~o,O'1** 

# J 

# 0l. at:,**'~** 

# S·\. 7.5i{ 

# 7..t:D
-

# 'i

# c;- ISZ.(, Y 

# I**u~,** 

# 1'-1 5"(-**<$~** 

# L {)S

## -Lj<iS".c:~

# BARR Engineering Company
Pyrometer Number: 

# C

# H -

# z... rc.. Pyrometer Reference: C \ - 3>4 - 

# i**~::;F--.sIZ..**

## ~("y.3Su Reference 

# 1000 950 900 850 800 750 700 650 600 550 500 450 400 350 300 250 200 150 100 50 0 -50 Notes: 

# PYROMETER CALIBRATION

Date: 

# 3 r

# c., ,

# 0~ Technician: 

# e,**~ssvv,jllCJV'** Pyrometer 

# N!r**~**

## ~ 

## \....l'OO"

# 91: 

# SSLl: 0 

# i

,3C):::). 

# 9?:' 

# '(,51 ZS-**(OC~~R**

## .. J

# 5(· 

# 5li 0.0 ,

# <6:;- 

# :)/'&, o·q( -Lj

# <?..

# 0\

# BARR Engineering Company Pyrometer Number: (..)-\-\

# ~ Ie Pyrometer Reference: 

# c.L-3-:DK-/

# ()Jet: 3

# j"**~o!91p&3<jo** 

## Reference 

# 1000 950 900 850 800 750 700 650 600 550 500 450 400 350 300 250 200 150 100 50 0 -50 Notes: 

# PYROMETER CALIBRA 

# TION

Date: 

# -.5. (...,
-**O~** Technician: 

# .p**e.~ifll\l'\\e£.** Pyrometer 

# !J/A-

"k1 qal._ oS 35'0,1("**-~01, I~**  

# ZSl. 3'-1 (oi. oj 

# IS-l.. 1-0 (01
.

# 0">- 

# q-r 7'1 I. 

# It



# -"n-. '5(y

# BARR MS ELECTRONIC PRESSURE TRANSDUCER CALIBRATION

MS 1.0. Number:

# f1~" 

# G, Reference 10 No:

# enf i" l'-i

# -(:y~SI ) 

# i-JP;:rj(vle;
..rrJ}r.rc/7:6y

# 1 Range Setting: ()

## ~ 

# L.. i'

## I~ I 

# 0 Date ofCalibration:

# ~ - 

# C:,
- ()

# <6 Technician: 

# 2·**)""lv~VYL.'\~e-£**

Notes:

Barr Engineering Co. 4700 W. 77th St Minneapolis. MN 55437 (952) 832-2600 

## Positive:

Negative: Reference Oil Manometer 

# 0.06" 0.2" 0.5" 0.8"



# 1" 1.5" 2" Reference Oil

Manometer 

# 0.06" 0.2" 0.5" 0.8"

1" 1.5" 2" Electric Manometer**,~**\ 

# t5 •

# u(,; 

# (:)·zo·)



# D· <)'0" 

# U. 

# 11'lr 

# i. 001/ 

# J.**~**

# j I, 

# I .

# '1'1 if 

## Electric Manometer 

## 6·\J(,.'r 

# 0- 7...o'f**~.qq** )1 

# m tc 

# u, U

_**~** If 

# U·':1 r . 

# L-( q;cl 

# I, ;4it . Leak Check: Negative: 

# 4 Positive:

## Q\~ Pass/Fail

# f?·~S \!Jf'rSt5



# ,¥5**IJ~5**

# ~~**~~$~**



# pr-g; Electric Manometer 

# l:>{)-5;>**~f\-5b**

# b~S }PC;S 

# Jts> fO:55**);]~** 

# @2" @2"



# --

# BARR MS ELECTRONIC PRESSURE TRANSDUCER CALIBRATION

MS I.D. Number: 

# fV\$.- )"
. Reference 

# ID

# NO:C.efT

-

# (~. 0 0 

## 5)

# JrJrs

# rj /U..efl.Jte')/U:fC"....y-1 

## Range Setting: 

# 0 ' (... ;1

# }~z. C,) 

## Date 

# ofCalibration: 

# 6' &> . 0

# ~ Technician: 

# P,¢.-I),SSVv\.

# :t\c.':.iV

Notes:

Barr Engineering Co. 4700W. 77th 

### 5t Minneapolis, 

### MN 55437 (952) 832-2600 

## Positive:

Negative: Reference Oil Manometer 

# 0.06" 0.2" 0.5" 0.8"

1" 1.5" 2" Reference Oil

Manometer 

# 0.06" 0.2" 

# 0.5" 

# O.S"

1" 1.5" 2" Electric Manometer 

# (),aL" I, 

### (''') 

# . 20il 

# o ,'-\ 'j If



### (\. 

# 1- '1 "

..... -, 11 

## J
. u 

# --0" I.**~** 

# 1.11 " Electric Manometer

. {, 

# L).

# \?l.P " 'LU 

# '1 '-'

# - ()
. :rOll 

# 2> oJ'] II



## - " • I

## ~5') "



### I 

## \...-\411



## ---- 

# I 

# .'1/ i, 

## Leak Check: Negative: 

# <DIs. @ 

# 2" 

# Positive: 

# dg, @

# 2" Pass/Fail 

# ltr;;S f,I1-!;,'S 

# 'hs I
.. ,'J[>rs3> 

# Yi\-s,s 01'>--sS 

# Pfl-t;r. Electric Manometer 

# (Af\S:::,

--- 

# 9,A-!:S**~(s,**



# yrrss

tPrSS Y1'1':'-7)

# ~'r§-5-

# BARR MS ELECTRONIC PRESSURE TRANSDUCER CALIBRATION

MS 1.0. Number: 

# As-3. Reference 

# 10 No:

# at Sf [\..i

-

# ~

# r I

# j Nr::

# sri**~;;:;::w-l** Range Setting: 

# c:> r 

# 2.. I'

## \~

# 2 0 Date ofCalibration: 

# :S. Co : 0 

# <6 TeChnician:\). 

# \15NJY1;\\ c;;£:(



# Notes:

Barr Engineering Co. 4700 W. 77th St Minneapolis, MN 55437 (952)832-2600 

## Positive:

Negative: Reference Oil Manometer 

# 0.06" 0.2" 0.5" 0.8"

1" 

# 1.5" 2" Reference Oil

Manometer 

# 0.06" 0.2" 0.5" 0.8"

1" 1.5" 2" Electric Manometer 

## 0.0(011 

## () , "'2,0 1/ 

# O. Y**~** /I 

# O. 

# rCt" 

# 0'7Ci If 

# I,**l.1~!1** 

# 1,1'Q ;f 

## Electric Manometer 

# C.OI../' Q . 

# -LOr, 

# D.<-;()" f,. oaf; 

# kPo(t /. s"\)-' 

# 7. _.::;,{) If 

# Leak Check: Negative: 

# ()kPositive: 

# Of::
Pass/Fail 

# Pn-5.s. 9,IX;.S

# e~f.5 rp.SS rM:S

# ~!:!S.>**O~** Electric Manometer

# l~ 

# 9

f'?.i,

# 9~5 

# (l-ss '01-:$.> f/1&5 (JfrsS @2" @2"

# MS ELECTRONIC PRESSURE TRANSDUCER CALIBRATION

MS 1.0. Number: 

# M 5 - I Reference 10 

## No:

# 6'\£1

# )Y-06~))**NrsT/pVl~~'l** Range Setting: '- 

# l?

-- 

# Z. 1/

# \~,.\,) 

## Date ofCalibration: 

# 3 - :) .**0~**

# TeChnician:iI)J~ ch.S\lVl·)\.v{

-

Notes:

BarrEngineeringCo. 4700W. 77thSt 

### MinneapoliS, MN 

### 55437 (952) 832-2600 

## Positive:

Negative: Reference Oil Manometer 

# 0.06" 0.2" 0.5" 0.8"

1" 1.5" 2" Reference Oil

Manometer 

# 0.06" 0,2" 0.5" 0.8"

1" 1.5" 2" Electric Manometer 

# (,), 0(,(1 

# 0, 

# Ge/ I 

## L).

# ~v It 

# O· f1/1 

# o ·11" I 

# 5'd' J . 

# '1'1'/ Electric Manometer 

## L'l,()(..(1 

# 0.2tf'

-- _I i, 

# 0·::>



# --- (L "1-'7!' ( 

# uo N 

## J. 

# S J

# 1/ I. ,) II 

## Leak Check: Negative:

# A- @ 

# 2" Positive:

# ~ @

# 2" Pass/Fail

# y:?~ 

# J1i-.;,**l:l!~** 

# PkS'S.

-- PA-f:S,

# ~~( A=t-t;S. Electric Manometer



# Hl-.s

# 5**)01~S** -- 

# 01ss P4S$; 

# PI'r-Ss.
_.

# )~?



# P'l-fS

# MS ELECTRONIC PRESSURE TRANSDUCER CALIBRATION

MS I.D. Number: 

# i1S- 2.
. Reference ID No:

# (A~r 1""1

# ~ CO.n 

# /VJ:.ST

# )jt11eJ/ldlV'--CG\I-l Range Setting: 

# 0 ,.. 2/'**)~2** 0 Date ofCalibration: 

# :l r

# ~ - 

## 0

# ~ Technician: 

# 91,

# R>s..s )\'1,')

# te:y:

Notes:

Barr Engineering Co. 4700 W. 77th St Minneapolis, MN 55437 (952) 832-2600 

## Positive:

Negative: Reference Oil Manometer 

# 0.0611 

# 0.2" 0.5" 0.8"

1" 1.5" 2" Reference Oil

Manometer 

# 0.06"



# -- 0.2" 0.5"



# --- 0.8" 1" c------- 

## 1.5" 

# 2" 

# '-

--Electric Manometer 

# '" U(./ G,' 

# 0, 

# c... ) I

# 0.51/' 

# 0'8'0'1 

# I. 00 '/ I, 

# 4<j I' 

# '.<]7-/ 1 

## Electric Manometer 

# 6.0'}_/1

- 

# O'Z 

# IiI 0.)0 1• 

# o v-o If 

### ' '::;' 

# j, 

# 00 II 

# I . 

# 5'"0 If 

# -z -0'0 I) 

# - Leak Check: Negative: 

# ci Positive: 

# ok
Pass/Fail

# p.~

# r.~**~f)kSS** 

# 1

# ~r5~ ..p,'k;£**(J;i-~** 

# PI'1"s's' Electric Manometer

# )~~S 

# YA-SS 

# Yl:SS**i~'\-$.:;** .P!r( (

# p~.>S.

# ~(}~5S - 

# @2" @2"

--

# MS ELECTRONIC PRESSURE TRANSDUCER CALIBRATION

MS 1.0. Number:

# +tv.. ...**~""--_'1"'--**

# __ Reference ID No:

# "(Iift

- H - DOS))

# ".r~..syf'levle.Vn:.;t",-,\(

# I Range Setting: 

# 0 - 1. I'

# l~ 7 

# 0**~<...** 

# Date ofCalibration: 

# J,';;' 0 

# lS Technician: 

# pr

# ~Y'\: 

# ,\(.1'/'

Notes:

BarrEngineering Co. 4700 W. 77th St 

### Minneapolis, MN 

### 55437 (9S2) 832·2600 

## Positive:

Negative: Reference Oil Manometer 

# 0.06" 0.2" 

# 0.5" r--' 

# 0.8" 1---' 

# 1" 1.5" 2" Reference Oil

Manometer 

# 0.06" 0.2" 

# 0.5" 0.8"

1" 1.5" 2" Electric Manometer 

# o .oV 

# o .jC, II 

# D. 

# L\'111 6. 

# i'1 i•



# I·oo n 

# 1 . 

# q1" I. 

# 17 " Electric Manometer {. 

## ()

. 

### \,., 

## b·

# \~ \

### D-~()I\ 

## 0-"6'0' I 'I - 

## 00 q 

## 1 _**~\** 

# 16" 

# 1·11" Leak Check: Negative: 

# de Positive: 

# die
Pass/Fail 

# £crss

\Jp.-s<;, 

# ,1(l<-'>S



# -**ep..5~** 

# fJ.1\- <:$

# P~'1>5 ?'">S's Electric Manometer 

# YJ\.ss



# q

f'l"C;s, 

# @2" @2"



# -



# Xf'-S'"

--- 

# frf i,;s. 

# \>!KSc,**9.A-c,.~** 

# Y",5>

# ANEROID BAROMETER CALIBRATION

Barometer I.D. Number: 

# Y4'i?c.'d

# 4'7/Pnji

## "l'f3 Barometer Reference: 

# H")Ii C [) 7



## Pretest Calibration:
Before Adiustment AfterAdjustment

Postlest Check:

Notes:

Barr Engineering Co. 4700 W. 77th St Minneapolis, MN 55437 (952) 832-2600 

# ,

Reference CHg) 

# )"cr,. 36 Nflr

Reference CHg) 

## Project Name:

# yr'tl\.I:;'V~ '{U0'1 (b."lV\S Project Number:
_______ _

Barometer (HHg) 

## Date Technician



# -2-q. c"6 6**·~·o'\S'** 

# l\O)?) foJ)'\·**!\l~** 

## ;0\t1...



## Barometer 

# C'Hg) Date Technician

# AppendixE Cylinder Gas Certifications

# SIIII SCOTT-MARRIN, INC. 6531 BOX 

## SPRINGSBLVD. • RIVERSIDE, CA 92507 

## TELEPHONE (951) 653-6780. FAX (951)**653~2430** 

# Report OfAnalysis EPA Protocol Gas Mixtures BARR01 TO: Barr Engineering Co Attn: Pete Rossmiller 

## 7390 OHMS Lane Edina, MN 

## 55439-2330 (952) 832-2634 REPORT NO: 

## 53333-01 REPORT DATE: March 11, 

## 20080 CUSTOMER PO NO: 

## 20080111ATA2

CYLINDER NUMBER: 

# CC28675 CYLINDER SIZE: 150A (141 std cu ft) 

## CYLINDER PRESSURE: 2000 psig

COMPONENT CONCENTRATION 

## (vlv) REFERENCE ANALYZER EXPIRATION REPLICATE 

# ± EPA UNCERTAINTY STANDARD MAKE, MODEL, SIN, DETECTION 

## DATE ANALYSIS DATA Nitric oxide 50.2 

## ± 0.3 ppm GMIS Monitor Labs Model 8440 

## 3/5/2010 2/27/2008 3/512008 NOx 50.2 ppm CYLINDER #: Serial

## # 136 50.2 ppm 50.4 ppm CC28420 Continuous 50.2 ppm 50.4 ppm Nitrogen dioxide < 

## 0.3 ppm 

## @ 50ppmv Chemiluminescence 50.3 ppm 50.2 ppm LAST CAL DATE: 

## 2/14/2008 MEAN: 

## 50.2 ppm 50.3 ppm 02-free Nitrogen Balance

ppm 

## = umole/mole 

## %

# =mole-% The above analyseswere perfonned in accordance with Procedure G1 ofthe EPATraceability Protocol, Report Number EPA-6001R97/121, dated September 1997. The above analyses are invalid ifthe cylinder pressure is less ihan 150psig.

# D.C~M---/ ANALYST:
__________

# ~~~~__________ APPROVED:
____

# ~~---- ____-------- D.C.Marrin Theonly liability ofthis company for gas which fails to complywith this analysis shall be replace entor reanalysis thereofby the companywithout extra cost. 

### STANDARD CALIBRATION GASES IN ALUMINUM CYLINDERS

# IIII**~S~2-r:!~~Vf.'~R~2~~c!~s~·** TELEPHONE(951)653-6780· FAX (951) 653-2430 

# Report OfAnalysis EPA Protocol Gas Mixtures BARR01 TO: 

# Barr Engineering Co Attn: Jason McCann 4700 West 77th Street Minneapolis, MN 55435-4803 (952) 832-2890 REPORT NO: 

# 49471-03 REPORT DATE: 

# March 3, 20061 CUSTOMER PO NO: 

# 2006/02/08/NJM

COMPONENT Nitric oxide 

## NOx Nitrogen dioxide 02-free Nitrogen. CONCENTRATION (v/V) 

## REFERENCE ANALYZER :t 

## EPA UNCERTAINTY STANDARD MAKE, MOOEL, Sill, DETECTION 

## 91.5

# ±0.9 ppm 91.5 ppm < 

## 0.5 ppm Balance
...

### ': 

## GMIS Monitor Labs Model 8440 CYLINDER 

## #: Serial 

## # 136 CA03023 Continuous @ 

## 100.7 ppmv Chemiluminescence LAST CAL DATE: 

## 2/8/2006 : 

## :'

..



## ppm 

## =umole/mole %

## =mole-% 

## CYLINDER PRESSURE: 2.QOQp.sig 

## EXPIRATION DATE REPLICATE ANALYSIS DATA 2/10/2008 1/12{2006 91.6 ppm 91.8 ppm 91.7 ppm MEAN: 

## 91.7 ppm

# REC~~ MAR 092006**8A~ ~GCO.**  

## 2{10{2006 91.3 ppm 91.4 ppm 91.5 ppm 91.4 ppm

:.



### The above analyses were performed in accordancewith Procedure G1 ofthe EPATraceability Protocol, Report Number EPA-SOO/R97/121, dated September 1997. The above <i!1.alyses are invalid ifthe cylinder pressure is less than 150 psig. 

## ANALYST:

# ~.~:t:t::s APPROVED:
____

## ~~-------------- 

# B.M.Marrin The only 

### liability ofthis company for gaswhich failsto complywith this analysis shall be replace ent or reanalysis thereof bythe companywithout extra cost. 

### STANDARD CALIBRATION GASES IN ALUMINUM CYLINDERS

# '"0., \:.1 ",' :;: >1\: ':': 

### i ;_' :.":**:'~::rT'_** 

### -..0, 

## t.'L: I.:,

,J'.

# CERTIFl(-;ATJ~ 

# (JF/\IVALYS1S / 

# l-::;PA PROT()[:(JL (;,4S

,**'.f.'d~·(** 

### ?'\h:'.. 

### i**\.\.~ll~~'i'rl( "\~.,!rl(i'\:** **~YI.~** 

### ..


# r

# c f.: \,\1 

### \lEY"'; 

### ESI 

# REfERES(1: 

# STLVLJARlJ



# .·LVALrZER READISGS

l"{J'\>l' 

### /. 

## (0:-;::, (.!**C()~**.. t \ : 

## Z \S:;AY I.'**\~** 

### "CC:O'\il**J"';,\I,y~;t~** 

### lI,q f 

### I( 

### Z 

# c**~'jns ~!.:**  

### Li\pi-.f<
.....,(:'. i**l·J~!~;** 

### H<t.D**t~·: I·'.,~**  

### ;·.\'t**r~** 

## \ j**HJ~'"** 

### In-; m'E"; fTkTlLH:. ;f'C!**lI~D;';':;!**

# r,**'~":ii' !O'~**  

### :H !l·! U·F·l,r;[Lrr'i· 

### ['Rl)"tt",cur**~"f,}.** )tl{!

# 1: LJH JO'



### , E!([ li 

### ILl! .'L( (J I(

### ,'.!, " i \ 

## !I'd)n:**J'RrS~n(]:** 

### i 

### I-WIi" Ii 

### \TI: (,; \'1,\"1"1:: L**~**



### ...:illl,! \ 

### f I{ I' .. 

### D.\'

## Tl-:



# All/Ai'. r-etD Byo TElnl

# ~

# 51111 SCOTT-MARRIN, INC. 6531 BOX SPRINGS BLVD. • RIVERSIDE, CA 92507 TELEPHONE(951)**653~6780.** 

## FAX(950**653~2430** 

# Report OfAnalysis EPA Protocol GasMixtures BARR01 TO: Barr Engineering Co Attn: Pete Rossmiller REPORT NO: 

## 51880-04 REPORT DATE: June 12, 

## 2007 CUSTOMER PO NO; 

## 2007-0518TYL1 

## 4700 West77th Street Minneapolis, MN 

## 55435-4803 (952) 832-2890

CYLINDER NUMBER: 

# CC7380 CONCENTRATION COMPONENT (v/v) Nitricoxide 513±3ppm NOx 513 ppm Nitrogen dioxide <3 ppm 02-free Nitrogen Balance



# JUN lS2Q07

ppm

## =umole/mole %

## =mole-%**~WLlNDER** 

## SIZE: 150P. 

## (78 std C1J 

## ft) 

## CYLINDER PRESSURE: 1100 psig REFERENCE ANALYZER EXPIRATION REPLICATE STANDARD MAKE, MODEL, SIN, DETECTION 

## DATE ANALYSIS DATA GMIS Monitor Labs Model 8440 6/11/2009 6/11/2007 

## CYLINDER

## #: Serial

## # 136 515 ppm CC29067 Continuous 516 ppm @566ppmv Chemiluminescence 517 ppm LAST CAL DATE: 

### 6/8/2007 MEAN: 

## 516 ppm

The above analyseswere performed in accordancewith Procedure G1 ofthe EPATraceability Protocol, Report Number EPA-600JR97/121, dated September 1997. The above analyses are invalid 

### ifthe cylinder pressure 

### is less than 150 psig. ,/ 

## ANALYST: 

# ,S)C--

# /J4**~** APPROVED: 

# JI/f1?f!!/ D.C.Marrin 

# I J.T.Marrin The only liability ofthis company [or gas which falls to comply wIth tms analysIs shall be rePlarentor reanalysIs thereof by !nacompany without extra cost.


### STANDARD CALIBRATION GASES IN ALUMINUM CYLINDERS

# 51111 SCOTT-MARRIN, INC. 6531 BOX SPRINGS BLVD. • RIVERSIDE, CA 92507 TELEPHONE (951) 653"6780 • FAX (951) 653-2430 

# Report OfAnalysis NIST-Traceable Gas Mixtures BARR01 TO: Barr 

## Engineering Co Attn: Pete Rossmiller 4700 West 77th Street Minneapolis, MN 55435-4803 (952) 832-2890

CYLINDER NUMBER: 

# CC99443

COMPONENT Nitrogen dioxide Nitrogen Cylinder Size: 

## 150A (141std cu ft) Cylinder Pressure: 2000 

## psig Shelf Life: 

## 6 months CONCENTRATION (v/v) 46.4 ±

## 0.9 ppmv Balance

ppm 

## =umolelmole % =mole-% 

## REPORT NO: 

## 52671-01 REPORT DATE: 

## October 30, 2007[] CUSTOMER PO NO: 

## 2007/09/1

# OTYL1

NIST TRACEABLE REFERENCE STANDARD SRM 1683b

The above analyses are traceable to the National Institute ofStandards and Technology by intercomparison with the reference standard listed herein. Where indicated, volumetricand gravimetric reference standards are traceablethru use ofour analytical balance
.. N1ST ReportNumber MMAP 232.09/202491. ANALYST: 

# ro,c.**!Z1~** APPROVED:
____**-7~**

## ______________ __ D.C.Marrin Theonly liability ofthis company forgaswhich fails tocomplywith this analysis shall be replace entor reanalysis thereof bythe companywithoutextra cost 

### STANDARD CALIBRATION GASES IN ALUMINUM CYLINDERS

# 51111 SCOTT-MARRIN, INC. 6531 

# BOX SPRINGSBLVD. • RIVERSIDE,CA 92507 

# TELEPHONE (951) 653-6780. 

# FAX (951) 653-2430 

# Report OfAnalysis EPA Protocol Gas Mixtures BARR01 REPORT NO: 

## 50895-02 TO: 

## Barr Engineering Co Attn: Pete Rossmiller 4700West 77th Street Minneapolis, MN 55435-4803 (952) 832-2890 REPORT DATE: 

## November30, 20060 CUSTOMER PO NO: 

## 20060926TL

CYLINDER NUMBER: 

# CC106732 CYLINDER SIZE: 150..0.. (141 std cu

## ft) CYLINDER PRESSURE: 2000 psig

COMPONENT CONCENTRATION (v/v) REFERENCE ANALYZER EXPIRATION 

# ± EPAUNCERTAINTY STANDARD MAKE. MODEL. SIN. DETECTION 

## DATE REPLICATE ANALYSIS DATA Carbon dioxide 

## 8.98±0.09 % GMIS 

## CYLINDER#: Varian Model 

## 1860 Serial

## # None 

## 11/28/2009 11/28/2006



## Oxygen 

## 8.95 ±

## 0.05 %

Nitrogen Balance

ppm

## =umolelmole %

## = mole-% 

## CC42814 @8% GMIS 

## CYLINDER#: 

## CC81204 @9.88% Thermal Conductivity Gas Chromatography LAST CAL DATE: 

## 11/28/2006 MEAN: 

## Varian Model 

## 1860 

## 11/30/2009 Serial 

## # None Thermal Conductivity Gas Chromatography LAST CAL DATE: 

## 11/912006 MEAN: 

## 8.98 % 8.99% 8.98 % 8.98% 11/30/2006



## 8.95% 8.95% 8.96% 8.95 

# %

The above analyses were periormed in accordancewith Procedure G1 ofthe EPATraceability ProtOCOl, Report Number EPA-600/R97/121. dated September 1997. The aboveanalyses are iova 'd ifL'1e ylioder pressure is less than 150 psig.


## ANALYST:
____**~_=~~~~~**_____ 

## APPROVED:
____**~~---------------** 

## M.S.Calhoun The only liability ofthis companyjorgas which iailsto comply with this analysis shall be replac mentcr reanalysis thereof bythe company without extra cost. 

### STANDARD CALIBRATION GASES IN ALUMINUM CYLINDERS

# 51111 SCOTT-MARRIN, INC. 6531 BOXSPRINGS BLVD. • RIVERSIDE, CA 92507 TELEPHONE (951)

# 653-6780. FAX (951) 

# 653-2430 

# Report OfAnalysis EPA Protocol Gas Mixtures BARR01 REPORT NO: 52716-03 TO: 

## Barr Engineering Co 

## Attn: Pete Rossmiller 7390 OHMS 

## Lane Edina, 

## MN 55439-2330 (952) 832-2890 REPORT DATE: 

## November 6, 

## 2007C CUSTOMER PO NO: 

# 2007/09/20TYL1

CYLINDER NUMBER: 

# CC62111 CYLINDER SIZE.: .1.50A(141 §)td cu ft) 

## CYLINDER PRESSURE: 2000 psig.

COMPONENT CONCENTRA TION (vfv) REFERENCE ANALYZER EXPIRATION REPLICATE 

# ±EPA UNCERTAINTY STANDARD MAKE, MODEl, SIN, DETECTION 

## DATE ANALYSIS DATA Carbon dioxide 5.05 

## ±0.05 % GMIS Varian Model 1860 

## 11/5/2010 11/5/2007 CYLINDER#: Serial # None 5.05% CC83094 Thermal Conductivity 5.05% @8.1% Gas Chromatography 5.05% LAST CAL DATE: 

## 11/5/2007 MEAN: 

## 5.05% Oxygen 21.00 

## ±0.22 % GMIS Varian Model 1860 

## 11/2/2010 11/212007 CYLINDER#: Serial # None 21.01 

## % ALM031591 Thermal Conductivity 21.01 % @24.4% Gas Chromatography 20.99 

## % LAST CAL DATE: 

## 10/2612007 MEAN: 

## 21.00 

## % Nitrogen Balance

ppm

## =umolelmole % 

## =mole-% The above analyses were performed in accordance with Procedure G1 ofthe EPATraceability Protocol, Report Number EPA-600/R97/121, dated September 1997. The above analyses are inva id ifthe ylinder pressure is less than 150 psig.


## ANALYST:
____**~~~~~~~~**

## _____ APPROVED:
____**~~--** 

## __------------ M.S.Calhoun 

# J. T. Marrin Theonly liabilityofthis companyfor gaswhich fails to complywith this analysis shall be replace entorreanalysis thereof 

### bythecompanywithout extra

### cost STANDARD CALIBRATION GASES IN ALUMINUM CYLINDERS

# AppendixF Stack TestPlan

# TestPlan For Temporary NOxMonitoring Installation at Hibbing Taconite Company
DateTestPlan created/revised: March 11,2008 ScheduledTestDates: March 31-April 7 andApril 8-15, 2008 PARTI: General Information Emissions facility location Facility contact Hibbing Taconite Company Andrea Hayden P.O. Box 589 Hibbing Taconite Company Highway 5 North P.O. Box 589 Hibbing, MN 55746-0589 Hibbing, MN 55746-0589 Phone: (218) 262-6856 Fax: (218) 262-6877 ajhayden@cleveland-cliffs.com 

# MinnesotaAir Emissions PermitNumber: 13700061-002 AQDFileNumber: 541 Reason emissionsunits areto betested: Testing company contact Tom Kuchinski Barr Engineering Company 4700 West 77th Street Minneapolis, MN 55431 Phone: (952) 832-2727 tkuchinski@barr.com



# Testingis avoluntaryeffortthroughMPCA-issuedAdministrative OrderbyConsentDecree (effective 3/3/08)to evaluatethe variabilityofNOx emissions as itrelates to normal operations of taconiteproduction. This testing will alsoprovideHTC with additionaldata for generating a predictive equationforNOxemissionsbased onoperatingparametersthatHTC currently monitors continuously. Thetablebelowprovidesthe emissionsunits'plantnomenclature,permitidentificationandplant location. Stackdrawings showing stackdimensions and testportorientationand locationsrelative to airflowdisturbances willbeincludedin the final report.

Process unit Emissions unit Stackvent Emissions unit location nomenclature number number Line 1 Pellet EU020 SV021-024 Pellet Plant Indurating Furnace EU022 SV029-032 Pellet Plant Line 3 Pellet Indurating Furnace

# PARTII: TestingRequirements Thefollowing table identifiespollutantsto bedetennined; applicableemissions limit andunits, and associatedregulationfor each emissions unit and stackvent.

Process unit Stack Pollutant Specific Methods/Procedures Required nomenclature vent Tested/Permit Citation number Limit Line 1 and Line 3 SV021 NOx Required byAdministrative Order by Consent indurating furnace SV022 concentration (effective 3/3/08). Testing to be performed in waste gas stacks SV023 and mass accordance with Minn.R SV024 emissions rates 7017.2020, subp 2, (with the exception that 150 hours oftests runs will be perforrned in & 

# Permit limitfor place ofthree 1-hourtest runs)1 NOx: 7017.2030 NotApplicable 7017.20352 

# SV029 7017.2040 SV030 SV031 Testing performed by: SV032 40 CFR Part 60, appendix A NOx concentration by modified EPA Method 7E1 Volumetric airflow rate by modified EPA Method 21 Gas analysis for determination ofdry molecular weight by modified EPA Method 3A1 Moisture content by modified EPA Method 41 1 

## EPAtest method modifications are detailed in Section VI. 2 

## Submission ofthe test report will coincide with the Administrative Order by Consent deadline ofJune 30, 2008, as indicated in Part VI Test Report.

# PartIII: Operating Conditions HTC intends to varyprocess operationsduring the testingprogram. Parameters that will 

# be monitored during the testinclude,butare notlimitedto the following:
Process Parameters to be Monitored Process Parameter Units Frequency Pellet type (Standard) 

# -- -- Production Rate Tons/hr Hourly average Fuel Type (Natural Gas) 

# -- -- Heat input MMBtu/hr Hourly average Unusual production events 

# -- As needed Ambient AirTemperature Degrees F Hourly average Stack gas flow rate continuous monitoring ofgas flow rate (test dscfm 1 

# Hourly average company) Combustion zone temperature Degrees F Hourly average Air Damper Positions Percent open To be determined Ferrous iron content Percent Shift report 1

## dscfm (dry standard cubicfeet per minute)



# Process Emissions Control Devices Control equipment Control Manufacturer Monitored parameters ID equipment Model (hourly averages from continuous nomenclature data) CE022 -CE025 Venturi-Rod Environeering 

# Pressure drop across demist, 

# psi. CE032 -CE035 scrubbers A33-200000 

# Pressure drop across demist, 

# psi. permit limit>/= 0.1 psi Pressure drop across venturi, 

# psi. Pressure drop across venturi, 

# psi. permit limit>/= 0.5 psi Scrubber liquid flow, gpm (gallons per minute) Scrubber liquid flow, gpm (gallons per minute) permit limit: >/= 300 gpm

# PartIV: TestMethods All tests will be performedusingthe following USEPA referencetestmethods.

Pollutant, Test Method1 

# parameter NOx, Method 1 Sample and Velocity Traverses for Stationary Sources. Twelvevolumetric point traverse for selecting representative pOint for continuous airflow rate, monitoring temperature Method 2 Determination ofStack Gas Velocity and Volumetric Flow Rate. and moisture An US" type pitottube fixed at a representative point in each stack. Differential pressure recorded with one minute and one hour averages in inches ofwater. Stacktemperature using atype Kthermocouple, recorded with one minute and one houraverages in 

# of. Method 3A Determination ofOxygen and Carbon Dioxide Concentrations in Emissions from Stationary Sources. All analyzers will be calibrated initially for linearity and daily for zero and span checks. Data will be considered to be valid it drift is within the limits for a normal CEM system. Method 4 Determination of Moisture Content in Stack Gases. Daily wet bulb/dry bulb readings will be taken. In the eventthe sources are consistently saturated, further moisture calculations will assume saturation atthe average stack temperature. Method 7E Determination ofOxides of Nitrogen Emissions from Stationary Sources. The measurement ofNOx concentration will be performed simultaneously at all four stacks following EPA Method 7E. The method performance will be modified by collecting data over 150 hours of representative plant operation. All analyzers will be calibrated initially for linearity and daily for zero and span checks. All Method 7E calibration criteria will be met exceptthat a system bias of up 7.5% ofspan will be used for the upper limit of bias correction. A span range of-500 ppm is expected. 45 minutes ofdata within an hourwill be used for that hour's average. Therefore calibration time completed within 15 minutes/system will result in no data loss time. Instruments will read PPM dry. All test methods and are found In 

## 40 CFR 60 Appendix A 

# PartV: ContinuousEmissionsMonitors There areno continuous emissions monitors installedon the sources to betested.



# 2

# PartVI: Other TestDates: March 31 throughApril 14,2008. Theproposed test schedule follows!: Line3 Monday Tuesday-Sunday Monday March 31 April 1-6 April 7 Setup day 24 hours of NOx data Complete testing at 150 Begin sampling collection hours ofdata collection

at 6:00 p.m -12:00pm

at Line 

# 3 Move equipment to Line 1 

# Line 1 Tuesday Wednesday-Monday Tuesday

AprilS April 9-14 April 15 Complete setup. 24 hours of NOx data Complete testing at 150 Begin sampling collection hours ofdata collection at -12:00 p.m -12:00 pm at Line 

# 1

I 

# ..

The test schedule may be modified pnorto the test dates. Testmg may be extended due to process upsets, test equipmentfailure or prolonged daily calibrations. 

# HTC and BarrEngineeringcontacts willmake themselves available for apretestmeetingpriorto March25. Atthepreference oftheMPCA,HTC suggeststhepretestmeetingbe conductedby telephone. Maintenance: A description ofanynecessaryworkdone within 30 dayspriorto the test and the normalmaintenance schedule followed willbe included in the testreport. TestReports: Onehard copyofthe testreport willbe submittedto the MPCA. HTCrequests thattherequired testreport submittal deadline coincidewiththe Administrative OrderbyConsent deadline ofJune 30,2008because ofthe largevolume ofdata to beprocessed and summarized. NOx emissions concentrationdata and calculated emissionsrates willbe submittedon CD-ROM in anon-protected spreadsheetformat (Excel). Testplans and report snbmittals willbe addressed to: AndrewPlace PerformanceTestCoordinator Compliance and EnforcementSection-IndustrialDivision MinnesotaPollution ControlAgency 520 Lafayette Road St. Paul, MN 55155-4194 ClosingRemarks

# Ifthere are questions orcomments about the informationprovided,please contactme by telephone ore-mail.

AndreaHayden SectionManager
- Environmental HibbingTaconite Company Attachments: c: TomKuchinski-BarrEngineeringCompany



# 2

# Minnesota Pollution Control Agency 520 LafayetteRoad St.PauI.MN 

## 55155-4194 

# Air Performance Test Form Performance Test Plan Approval 

# Facility Information (please print)

Facility name: AQ#:**----"--54~1'---**

## __ _ Facility contact: Andrea Hayden, Environmental Coordinator Address: Highway 5 North, PO Box 589, Hibbing, MN 55746 Phone:**~(2~1~8)~2~6~2~-6~8~56~**

## ____________________________ _ Line 1 and 3 Indurating Furnace Waste Gas Stacks (SV021-SV024, SV029-SV032) for extended 7 day NOx Unit(s) to be tested:**~te::::s:.o:t.** 

## ___________________________________ _ Scheduled for: March 31,2008 at yourfacility located in: Hibbing, Minnesota.**---~~------** 

# Test Plan

Submitted on (date): March 11, 2008 Discussed on**(date):-.-.:..:M.:.:::a:.:.rc:::.:h~27:..!,,-,2:.::0~0:.:::8** 

## _________ _ 

# Yourtest plan has been approved by the Minnesota Pollution Control Agency (MPCA) as follows: 

# D Shortened test notification approved**~** 

## Test plan approved without modification 

# D Test plan approved with the following provisions: 1. Testing will be done comparative to Method 7E. Calibration and system biaswill be completed at least once daily and may be completed more frequently ifneed be. The bias results must be within 7.5% ofspan ordata between the failed calibration and the previous passing calibration will be considered invalid. Ifthe drift is above 3% ofspan, the unitwill need to be recalibrated. Ifthis methodology does not appearto be appropriate afterthe test is begun, please contact the MPCAto discuss the situation. 2. To determine valid data pointsfollow standards similarto Minn. R. 7017.1160, subp. 2. During periods of calibration, valid data points will be used to calculate the emissions forthat hour. Note hours ofcalibration in the test report. 3. Test shall be completed over a range ofoperating conditions in the event generating a predictive equation becomes necessary based on test results. 4. Emissions as well as all operating parameters must be recorded and reported on an hourly basis. 5. The MPCA requests a continuous 7 days oftest results (150 data points). All data relating to the test should be submitted for review. Due to the event process ortest upsets may occur, please contact the MPCAto discuss options to proceed and/or consider handling data ifproblems arise. 6. Label on CD copy should include: Facility Name, AQ File No., Emission Unit Designator, and Test Date. 

# Attached Forms**~** 

## Operating Data Summary- Combustion Sources**~** 

## Operating Data Summary - Process Sources**~** 

## Certifications Form**~** 

## Performance Test Report Completeness Criteria 

# D Operating Data Summary - Waste Combustors 

# D Operating Data Summary- Asphalt Plants**~** 

## Microfiche/CD-ROM Submittal Form Note: Forms are also available at www.pca.state.mn.us/air/performancetest.html 

# Approved by:
Date: March 28, 2008 aq-f6-0B 5/1/07 Page 

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## Andrew Place, Performance Test Coordinator Compliance and Enforcement Unit Minnesota Pollution Control Agency 

## Please contact me at651-296-7169 ifyou have any questions regarding this approval. Please be aware that enforcement action will be taken for performance testfailures indicating emissions above applicable limits (excess actual emissions to the environment). Failures commonly result in assessment ofa monetary penalty. Upon the firsttest failure, the Company should take immediate measures to minimize emissions. The measures taken should be documented, as they will become part ofthe record ofcorrective actions. Hard Copy Performance Test Reports and Microfiche or CD Copy submittals will be addressed to: Air Quality Compliance Tracking Coordinator Minnesota Pollution Control Agency 520 Lafayette Road North 8t. Paul, Minnesota 55155-4194 cc: Tom Kuchinski (email) Bob Beresford, MPCA (email) AQ Correspondence File No. 541

aq-f6-0B 511107 

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# Message Page 1of1
Thomas Leier Subject: FW: Test Plan Approval Attachments: MICROFICHE AND CD REPORT SUBMITIALS.doc; OPERATING DATA SUMMARY FOR COMBUSTION SOURCES.doc; OPERATING DATA SUMMARY FOR PROCESS SOURCES.doc; Performance Test Report Completeness Criteria (PTRCC).doc; CERTIFICATIONS REQUIRED FOR PERFORMANCE TEST REPORT.doc; Hibbtac,Extended NOx Test, 4-0S.doc



# From: Place, Andrew [mailto:Andrew.Place@state.mn.us] 

# Sent: Friday, March 28, 2008 2:07 PM 

# To: Hayden, Andrea 

# J Cc: Tom Kuchinski; Beresford, Robert 

# Subject: Test Plan Approval Andrea, The test plan approval forms associated with the upcoming extended NOxtest are included with this message. Ifyou have problems with any ofthe attachments feel free to contact me. Additional forms are provided at www·Rca.state.mn.usiairiRerformancetest.html Sincerely, AndyPlace Performance Test Coordinator Minnesota Pollution Control Agency 520 Lafayette Road St. Paul, MN 55155-4194 (651) 296-7169



# 5/21/2008

# Appendix G ProjectParticipantsand ContactInformation

# Project Participants and Contact Information
Minnesota Pollution Control Agency Andrew Place

- PerformanceTest Coordinator 

# Hibbing Taconite Company Andrea Hayden

- Section Manager, Environmental Andrew S. McDowell

- Environmental Coordinator JeffJones
- Process Engineer 

# Barr Engineering Company TimRussell

- Vice President/Chemical Engineer Tom Kuchinski

- StackTesting Supervisor TomLeier

- StackTestTechnician 

# CONTACT INFORMATION MPCA Hibbing Taconite Company Andrew Place Andrea Hayden Performance Test Coordinator Section Manager
- Environmental Compliance and Enforcement Hibbing Taconite Company Section-Industrial Division P.O. Box 589 MinnesotaPollution Control Hibbing, MN 55746-0589 Agency (218) 262-6856 520Lafayette Rd. N. (218) 262-6877 fax SaintPaul, Minnesota 55155 ajhavden@cleveland-cliffs.com (651) 296-7169 andrew.Qlace@state.mn.us

#2369C15 

# Barr Engineering Co. TomKuchinski StackTesting Supervisor BarrEngineering Company 4700W. 77 Street Minneapolis, MN 55435 (952) 832-2727 (952) 832-2601 fax tkuchinski@barr.com