Results of the March 31-ApriI17, 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 

AQ File Number 541 

AQ Facility Pennit Number 13700061-002 

Prepared for 

Hibbing Taconite Company 

June 2008 

Prepared by 

Barr Engineering Company 

4700 West 7th Street 

Minneapolis, MN 55435-4803 

Phone: (952) 832-2600 

Fax: (952) 832-2601 
Results of the March 31-ApriI17, 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 

AQ File Number 541 

AQ Facility Permit Number 13700061-002 

Prepared for 

Hibbing Taconite Company 

June 2008 

BARR 

4700 lV est 77th Street 

Minneapolis, MN 55435 

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 

Report certification ....................................................................................................................................... 1 

Certification of sampling procedures: ............................................................................ 1 

Certification of Analytical Procedures: ......................................................................... 1 

Certification of Test Report by Testing Company: ........................................................ 1 

Certification of Test Report by Owner or Operator of Emission Facility: .................... 2 

Executive summary ....................................................................................................................................... 3 

Introduction ................................................................................................................................................... 4 

Results ........................................................................................................................................................... 5 

Process description ........................................................................................................................................ 6 

Stack testing procedures and methods .......................................................................................................... 7 
List of Figures 

Figure 1 Test Port Locations - Pellet Indurating Furnace Line 1 and 3: Venturi Scrubbers 

(SV021-024, EU 020), (SV029-032, EU022) 

Figure 2 Traverse Point Locations - Pellet Indurating Furnace Line 1 and 3: Venturi Scrubbers 

(SV021-024, EU 020), (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 

Appendix F Stack Test Plan 

Appendix G Project Participants and Contact Information 

11 
Re rt certification 

Certification of sampling procedures: 

I certify under penalty of law 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 of my 

knowledge and belief, true, accurate, and complete. All exceptions are listed and explained 

below. 

Signature: 

Tom Leier 

Air Quality Technician 

Barr Engineering 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 of law 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 of the 

person or persons who performed sampling and analysis relating to the performance test, the 

information submitted in this test report is, to the best of my knowledge and belief, true, accurate, 

and complete. Al7ptions are listed and expl ined below. 

/mt~ . Signature: 

2369Cl5001 

T:;n:;Kuchilski 

Stack Testing Services Supervisor 

Barr Engineering Co. 

6 -13 --0[5 

Date 

1 
Certification of Test Report by Owner or Operator of Emission Facility: 

I certify under penalty of law that the information submitted in this test report accurately reflects 

the operating conditions at the emission facility during this performance test and describes the 

date and nature of all operational and maintenance activities that were performed on the process 

and control equipment during the month prior to 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 of my 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 

Barr Engineering performed nitrogen oxides (NOx) emissions testing at Hibbing Taconite Company 

(HTC) located in Hibbing, Minnesota from March 31 - April 17, 2008. The Line 3 indurating 

furnace was tested March 31 to April 8, 2008. The Line 1 indurating furnace was tested from April 9 

to April 17,2008. 

The testing was performed in response to the Administrative Order by 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 impairment for 

Class I wilderness areas referred to as the Regional Haze Rule. The testing was performed to develop 

predictive equations for NOx emissions from each furnace line in lieu of installation of permanent 

continuous emissions monitors. 

Valid one-hour NOx emission data points were collected as required in the Administrative Order. 151 

hours of valid data was collected on Line 1 and 154 hours on Line 3. NOx emissions 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 

Barr Engineering conducted nitrogen oxides (NOx) emissions testing at Hibbing Taconite Company 

located in Hibbing, Minnesota. The test was performed to evaluate the variability of NOx emissions 

as it relates to the normal operation of taconite production. The test simultaneously measured NOx 

emissions from the four indurating furnace waste gas stacks of each line. The Line 3 indurating 

furnace was tested March 31 to April 8, 2008. The Line 1 indurating furnace was tested from April 9 

to April 17, 2008. 

The testing was performed in response to the Administrative Order by Consent between the MPCA 

and Hibbing Taconite Company. The Administrative Order addresses the U.S. Environmental 

Protection Agency regulations on visibility impairment for 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, sulfur dioxide (S02) and NOx. As an alternative to installing 

continuous emissions monitoring systems (CEMS) as a means of measuring NOx emissions for the 

Best Achievable 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 of Hibbing Taconite 

Company, Barr Engineering and Andy Place of the MPCA. A copy of the test plan and the test plan 

approval letter issued on March 28, 2008 are provided in Appendix F. Testing was performed as 

required with method exceptions defined in the test plan and test plan approval letter. 

Tom Leier of Barr Engineering performed the NOx testing and test data compilation. Andrea Hayden 

and Jeff Jones of Hibbing Taconite Company coordinated the test team and facility operations. The 

tests were not witnessed by a MPCA representative. A list of project participants is provided in 

Appendix G. 

During the test, the indurating furnaces were operated under normal operating conditions. Process 

conditions were varied for development of predictive NOx emission equations for each furnace line. 

Process data, operating conditions and predictive equation calculations results are provided under 

separate cover submitted by Hibbing Taconite. 

2369C15001 4 
Results 

Testing of Hibbing Taconite Company's line 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 1 indurating furnace waste gas stacks began on April 9, 200S and continued until 

April 17, 200S. A total of 151 valid one-hour data points were collected. 

Data was considered valid when all four analyzers/systems were operating correctly and 

simultaneously. It was agreed in the MPCA pretest meeting that forty-five minutes of data in an hour 

would be used to represent one hour of valid data. This allowed normal daily analyzer drift checks 

and system bias checks to be performed without omission of data provided the procedure could be 

completed in fifteen minutes. These events are identified in the data set. 

There were several significant interruptions of data collection due to a process interruptions and 

testing equipment failures. 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 of valid data had been collected. Periods of process 

upsets that invalidated data are identified in the dataset. 

Copies of the data files "Line 1 NOx CEMS lb per hour 4-9-0S 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 data sets contain 

all of the test data and emission rate calculations. The one-hour data provided is calculated using 

fifteen-minute averages. Hard copies of the data were not printed due to the large volume of data. 

Hibbing Taconite's process operations were within range of normal 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 of the concentrate is reduced by disk filters and then mixed with bentonite and 

conveyed to balling drums. After leaving the balling drum the green balls are discharged to a roll 

screen to control the pellet size. The green balls are transfened to an oscillating conveyor and then to 

a roll conveyor for additional removal of less than 1;4 inch material. The green balls are distributed 

evenly across the pallet cars, prior to their entry to the pellet furnace. The pallet cars have a layer of 

fired pellets already on the bottom and sides of the car called a hearth layer. The hearth layer allows 

for even airflow through the pellet bed and acts as a buffer between the pallet car and the heat 

generated through the exothermic conversion of magnetite to hematite. 

There are three natural gas fired furnaces at HTC, Lines 1 and 2 (Phase I), and Line 3 (Phase II). The 

straight grate 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 of magnetite to hematite is completed. The last two zones 

are cooling zones that allow the pellets to be discharged at a temperature of around 120 degrees 

Fahrenheit. Heated air discharged from the two cooling zones is recirculated to the first zones of the 

furnace for drying and preheating the green balls. Off gases from the furnaces are vented primarily 

through two ducts, the hood exhaust that handles the drying and recirculated cooling gases, and the 

windbox exhaust that handles the preheat, firing, and after-firing gases. The windbox exhaust flows 

through a multiclone, which protects a downstream fan, and then is combined with the hood exhaust 

steam in a common header. The exhaust gases are subsequently divided into four streams which lead 

to four venturi rod scrubbers and exhaust from individual stacks. 

2369C15001 6 
Stack testing procedures and methods 

The testing was performed from ports meeting EPA Method 1 criteria. Test port 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-typepitot tube was fixed at the point in each stack most representative of the average differential 

pressure. A calibrated Dwyer Magnesense gauge was used to read the differential pressure at this 

point. Calibrated type "K" thermocouples were positioned in the stack to measure stack temperature. 

Calculations of volumetric airflow were made with fifteen-minute average data values for velocity 

pressure, temperature, barometric pressure, oxygen and carbon dioxide. Stack gas 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 each process change that was made. 

The oxygen and carbon dioxide concentrations of the stack gas were measured at four stacks 

continuously by EPA Method 3A. Final oxygen and carbon dioxide results are bias corrected. 

Nitrogen oxides concentrations were determined using a modified EPA Method 7E. Protocol 1 gas 

standards were used for daily instrument calibration, system bias checks, and calibration drift checks. 

Analyzers were calibrated at the beginning of each furnace line test. Intermediate instrument 

calibration adjustments were not needed as drift and calibration error remained within specifications 

of the method. The upper span limit used to calculate maximum drift and system bias was 513 ppm 

NOx· The MPCA agreed to accept data within 7.5 percent system bias error but application of that 

allowance was not needed. The system bias calibrations were performed at least once each day and 

these calibration results were used to bias correct the raw NOx averages between calibration times. 

U. S. EPA test Methods 1,2, 3A, 4 and 7E are found in 40 CFR Part 60, Appendix A. 

Calibration documentation for the instruments is provided in Appendix D. Copies of the gas 

certification analysis for NOx, oxygen and carbon dioxide are provided in Appendix E. 

A Campbell Scientific CRIOOO with multiplex board data logger system was 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. Four fifteen-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 near the 

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 1 04.50" 

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 
Appendix A 

Report Calculations and NOl1lenclature 
Calculation Equations - EPA Methods 3A, 6C, 7E, 10, Modified 16AI16B 

System bias adjustment on source concentration indicated by the analyzer. 

CpPfIl 

where: 

= (C -C) CiliA 

A 0 C C III - 0 

is the adjusted source concentration, ppm(dry) 

is the average concentration indicated by the analyzer, ppm( dry) 

is the average of the initial and final system calibration responses of the zero 

gas, ppm 

is the average of the initial and final system calibration responses of the upscale 

gas, ppm 

is the certified concentration of the upscale calibration gas, ppm 

Convert source concentration into emission rate (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 of compound, by weight(mg), per dry standard cubic meter of air 

is the molecular weight of the gaseous compound 

\V'here MW = 

64 S02 

46 N02 

28 CO 

34 TRS (Assume H2S Molecular Weight) 

is the molar volume of gas at 68 OF and 29.92 in Hg, Llg-mole 

emission rate of gaseous compound in pounds per hour 

is the conversion factor from mg/m3 to lb/fe 

flow rate of dry gas at standard conditions in cubic feet per minute, dscfm 

is the conversion factor from minutes to hours 

W:\Business Units\EM\Subunit Adrnin\Technical & Support Services\AIR SAMPLING\Ternplates\Reports\Equations\analyzereq.doc 
Emission rate of pounds per MMBhl heat input. 

E(tb!hr) 

E(ib/MMBlu) = -----'----'----

Heat Input(MMBhl/hr) 

Heat Input from operating data summary 

W:\Business Units\EM\Subunit Admin\Technical & Support Services\AIR SAMPLING\Templates\Reports\Equations\analyzereq.doc 
AppendixB 

Field Data Sheets 
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Project :< [ L')j },i,c. /i./~,l<. 

Sample Location ! J If' -(. I 

Date ~( , '£ -() "'{' 

Operators -r Y L- ) !J~fT 

Duct Dimensions ______ inches 

Port Length inches 

Pitot Tube No. Cp 

Manometer 10 Bar. ID 

Digital Therm 10 ___ T,C. 10 __ _ 

Traverse Point Information Cyclonic 

Point Inches From: Flow 

Nl)IJlber Wall Port L O 

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I 

Schematic of Duct CrosscSection 

EPA METHOD 2 

FIELD DATA SHEET ~ I 

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Stat Press (In H20r {}, $~ 

Temp - Dry Bulb of 

Temp - Wet Bulb of 

Moist Content - % 

°2% '.'" 

Time of Meas,J," 

Pitot Leak Check Positive: '"~ 

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EPA METHOD 2 

FIELD DATA SHEET 

.$~F~:Y~6f~'~~~'3c~:1~.~~}rc::_ Run 1 

Bar Press (In Hq) .. 

Stat. Press (In H2O) '''''C" 71 

Temp - DryBulb of 

Temp - Wet Bulb of 

Moist Content - % 

°2% 

Time of Meas. 

Pitot Leak Check Positive: 

Run 2 Run 3 Run 4 

____ Negative: ___ _ 

1-_...;T~r.::,av:..:e:..:.r.::..se:...:...p0.::ric:.:nt:..:l:.:.:n.:...:fo:..:.r:..:.m:.:.:a.:::tio::.;n~_~ Cyclonic 1-=---:-=V:..:.erIO:..:.C=ity~H:::-e.::..ad1--l=n:..:.c:..:.he~s:....:HT'2,-=O=---:--+--=_-:--..:rS.:.:ta:.::c;:..k...:T-=:em:.::!fp::.;er:..:a:;:.tu:..:.r-=:e:---T°F--:::---:-~ 

Point Inches From: Flow Run 1 Run 2 Run 3 Run 4 Run 1 Run 2 Run 3 Run 4 

Number 

.1 

, 

" 

I 

r 

Wall Port 

Schematic of Duct Cross-Section 

6.P 6.P t>P t>P Temp_ Temp. Temp. Temp. 

(. ) ',' 

E iL 

i;;j~~·'·Yc;. :/·f~;;.E;·_g Run 1 Run 2 Run 3 Run 4 

Stack Pres. - In Hg 

Duct Area c Sq Ft. 

Mole Weight - Md 

Mole Weight - Ms 

Avg.Temp. - of 

Average .JlJ> 

Gas Vel - FtiSec 

ACFM 

SCFM 

DSCFM 
Date 

Operators 

Duct Dimensions _______ inches 

Port Length inches 

Pitot Tube No. 

Manometer 10 

Digital Therm 10 ___ _ 

Cp 

Bar. 10 

T.C.ID __ _ 

EPA METHOD 2 

FIELD DATA SHEET 

Pitot Leak Check Positive: ____ Negative: ___ _ 

1-__ T;:.r.::,av.:..;e;:.:.r.;:.se:....;..P..:,oi:.:.:n.;:.t .:.:,In:.:..fo:.;;J.;.:m.;.:a;.;:ti;;..o:.:..n _-I Cyclonic Velocity Head - Inches H20 Stack Temperature - of 

Poi nt Inches Fro m: Flow I-=R-un-:-1 ---r---=R .... un-::"2 --'--=R-u n-::-3 -r"--::R:-u-n --:4--+--=R:--u-n-;1--'"--:R:--u-n-=2:--'r---::RO'"u-n-:3:--1--::RO'"u-'-n-4:-i 

Number 

., 

) 

, 

I:> l. 

.1. 

I 

V 

Wall Port 

Schematic of Duct Cross-Section 

6P 6P ilP ilP Temp. Temp. Temp. Temp. 

-- ~~-f.l· , C 'l t 

...... i

e 

1:%."~':;~ff>Cf·,.;;;?;-'C;:t';.. ci;~c.C;~·" ";';' Run 1 Run 2 Run 3 Run 4 

Stack Pres. - In Hg 

Duct Area - Sq Ft 

Mole Weiqht - Md 

Mole Weight - Ms 

AVQ. Temp. - of 

Average~ 

Gas Vel - FtiSec 

ACFM 

SCFM 

DSCFM 
EPA METHOD 2 

FIELD DATA SHEET 

Project, ~:,' ': "". ~ ·,b~rl~"!;S;~S,;(~!;;;~;::1;( Run 1 Run 2 Run 3 Run4 

-----Sample-L-oeatioR-:::::::::;::';::,·;:'::' ~ . • ~',":£:L=~7~< ~'=' . ',;;. ==~ ____ I-~B~a~r~p¢.re~s;s7(1~niH~g') IT~::;:;=:::;=t-====t====l====1,---.--- Date ;J ":' ii:. ( I Stat. Press (In H20) .,' . 

Operators __________ .:..:..":.. Temp' - Dry Bulb of 

Duct Dimensions -"'.:...' ______ inches "', Temp - Wet Bulb of 

Port Length inches Moist Content - % 

PitotTube No. Cp . ,', O2 % 

MahometerlO, Bar. ID Time of Meas. 

Dig;t?:lrfi~rn1 ID.--- T.C.!D ----

Pitot Leak Check Positive: ____ Negative: ___ _ 

1-'"---__ T::-,r.::,-dv.:...e;..:.rs;.:.:e.:....·_P,.oi;.:.:n.:.,t ~In?'-fo:.:,r.:.:m.:.:a:.::ti~on~_-l Cyclonic .--=--:-'V..::erlo..::c-=ity~H:;;-ea.:...dT--_'=n.:;;.ch.:...e::=s'-'HT'2'-=O-:::---:--+--:::---:--TS.:.:ta:.:c""k...:.T-::em:.:...!fp,:..;er:.::a""tu.:...r-,,;;e,--.. oF--;:::---:-i 

Point ' Inches From: Flow Run 1 Run 2 Run 3 Run 4 Run 1 Run 2 Run 3 Run 4 

Number Wall Port 

'-I 

Ji-,. 

Schematic of Duct Cross-Section 

.:::.0 b.P b.P b.P b.P Temp. Temp. Temp. Temp. 

/\ ~:;,' -:.;> 

." ..... p 

.t. c() I '-, t:·, 

" c-c.·}!:1¥~:~":JZ2:::::··~'"'i~4' 

Stack Pres: - In Hg 

Duct Area - Sq Ft. 

Mole Weight - Md 

Mole Weight - Ms 

Avg. Temp. - OF 

Average'vItJ> 

Gas Vel - FUSec 

ACFM 

SCFM 

DSCFM 

.' 

Run 1 Run 2 Run 3 Run4 

-.---~:..-

'0. 

, 
BARR 

Project 

-' ----Sample.LocatioL<o-==:=:===:=~~-----

Date ~ i- . / , . ./ ., , -,>/ i ,;:;, .. .., 

Duct Dimensions / P/4, 5' inches 

Port Length inches 

Pitot Tube No, Cp ",). -;j"¥ 

ManometerlD BaLlO 

TC,ID 

EPA METHOD 2 

FIELD DATA SHEET 

l's;~~'":';:&"1{i:'~::~;::'?;;~0: Run 1 

Bar Press (In Hg) 

Stat. Press (10 H2O) """. <-

Temp - Dry Bulb OF 

Temp - Wet Bulb OF 

Moist Content - % 

°2% 

Time.of Meas, 

Run 2 Run 3 Run 4 

-- - 1-' 

Digital Therm 1[5._.,-,--__ 

Pitot Leak Check' Positive: ____ . Negative: ___ _ 

Traverse Point Information Cyclonic <'. . Velocity Head· Inches H2O Stack Temperature. OF 

t" ' Point·: Inches From: Flow Run 1 Run 2 Run 3 Run 4 Run 1 Run 2 Run 3 Run4 

Number Wall Port /'? . I'::·: 4P 4P t.P t.P Temp, Temp, Temp, Temp, 

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r';~c,. · 

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BARR 

COMPUTED 

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COMPUTED 

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DULUTH, MINNESOTA 

ANN ARBOR, MICHIGAN - JEFFERSON CITY, MISSOURI 

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COMPUTED 

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COMPUTED CHECKED SUBMITTED 

DATE 

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COMPUTED 

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ANN ARBOR, MICHIGAN - JEFFERSON CITY, MISSOURI 

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::l: '"REVJ2/1/98 
Appendix C 

Instrument Output 
Instrument output can be found in a CD-ROM on 

the back of the title page. 
AppendixD 

Calibration Data 
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 Cylinder Value 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 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) Analyzer Analyzer Mod I SN 200 EI-I Cylinder Value 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 Cylinder Value 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 

N02 check 

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 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% 

0.21% 

Difference as 

% of Span 

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) I Span] x 100 

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

Final Values 

4/9/2008 

System Cal System Cal Drift, 

Response, Cal. Bias Percent of 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 % of Span span 

0.9 0.08% 0,041

% 

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 

4/9/2008 I 

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 of span 

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 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 Q CEMS 

ANALYZER CALIBRATION 

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% 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 percent at end of period 

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 % of Span 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% 

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 % of Span 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 % of Span PPM % of Span 

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 % 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 -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 

Hibbing Taconite 

Furnace Line 1 Scrubber 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 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 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 - 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 

% of Span 

0.00% 

0.00% 

0.56% 

0.56% 

Difference as 

% of Span 

0.00% 

0.00% 

0.56% 

0.56'Vo 

Difference as 

% of Span 

0.00% 

0.00% 

0.56% 

0.56% 

Difference as 

% of Span 

0.00% 

0.00% 

0.56% 

0.56% 

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 

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 

STACK A (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 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 % of Span PPM % of Span 

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 % of Span PPM % of Span 

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 % of Span PPM % of Span 

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 CALI BRA TION 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 Cylinder Value 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 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) Analyzer Analyzer Mod I SN 200 EH Cylinder Value 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 Cylinder Value 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 of 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.02IYu 

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 % of Span 

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 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 245 244 241.5 -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) 1 Span] 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 

ANAL YZER 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 Cylinder Value 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 Cylinder Value 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 Cylinder Value 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 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 

0.0 

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 

% 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% 

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 +/- 5 percent of span pre run period System Bias can not exceed +/- 7,5 percent at end of period 

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 % of Span PPM % of Span 

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 % of Span 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 O2 

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 of span 

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 Cylinder Value 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 Cylinder Value 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 Cylinder Value 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 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 

Stack 1 - C02( 1 ) Initial Values Final Values 

Difference as 4/9/2008 4/10/2008 

% 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 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 

% 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 B (2) Time (sec) PPM PPM PPM % of Span PPM % of Span 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 

% 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% I 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 ~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 % of Span 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 

ANAL YZER 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 Cylinder Value 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 1 SN 200 EH Cylinder Value 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 Cylinder Value 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 1 SN 600CLD Cylinder Value 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 of span pre run period System Bias can not exceed +1- 7.5 percent at 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 Analyzer Cal 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 % of Span 

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) 1 Span] x 100 

Drift = ((Final System Cal. Response -Initial System Cal Response) 1 Span] 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 1 Scrubber 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 of span 

Stack 1 - 02(1) 

Analyzer Mod 1 SN 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 1 SN Model 200 Cylinder Value 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 1 SN 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 1 SN Model 200 Cylinder Value 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 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 

% of Span 

0.00% 

0.00% 

0.10% 

0.00% 

Difference as 

% of Span 

0.00% 

0.00% 

0.10% 

0.00% 

I 

Difference as 

% of Span 

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 % of Span 

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 % of Span PPM % of Span 

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 % of Span 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 % 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 -0048% 20.6 -1.90% 

System Calibration Bias = [(System Cal. Response - Analyzer Cal. Response) 1 Span] x 100 

Drift = [(Final System Cal. Response - Initial System Cal Response) 1 Span] x 100 O2 

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 of span 

Stack 1 - C02( 1 ) Analyzer Analyzer Mod 1 SN Model 200 Cylinder Value 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 1 SN 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 __ 1 _____ ~.O ______________ 

Stack 3 - C02(3) Analyzer Analyzer Mod 1 SN 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 1 SN 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 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 

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 % 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% 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 

% 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 B (2) Time (sec) PPM PPM PPM % of Span PPM % of Span 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 % of Span 

0 0.00% I 

0.0 0.00% 

0.0 0.56% 

0.05 0.56% ._- ---

Absolute Difference as 

Difference % of Span 

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 % 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% 4.9 -1.12% 

Stack 4 - 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 

STACK A (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 5.0 0.00% 4.9 -1.12% 

System Calibration Bias = [(System Cal. Response - Analyzer Cal. Response) 1 Span] x 100 

Drift = [(Final System Cal. Response - Initial System Cal Response) 1 Span] 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 CALIBRA TION 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 1 SN 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 1 SN 200 EI-I 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) Analyzer Analyzer Mod 1 SN 200 EH Cylinder Value 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 1 SN 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 

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 

% 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 tXJ 

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 % 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 47,1 -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) 1 Span] x 100 

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

Final Values 

4/12/2008 

System Cal System Cal Drift, 

Response, Cal. Bias Percent of 

PPM % of Span 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 % of Span 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 % of Span 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 of span 

Stack 1 - 02(1) Analyzer Analyzer Mod 1 SN 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 1 SN Model 200 Cylinder Value 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 1 SN 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 1 SN 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 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 

% of Span 

0.00% 

0.00% 

0.10% 

0.48% 

Difference as 

% of Span 

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 % of Span PPM % of Span 

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 % of Span PPM % of Span 

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 % of Span PPM % of Span 

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) 1 Span] x 100 

Drift = [(Final System Cal. Response - Initial System Cal Response) 1 Span] 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 of span 

Stack 1 - C02( 1 ) Analyzer Analyzer Mod 1 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 9.1 

Stack 2 - C02(2) Analyzer Analyzer Mod 1 SN 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 9.1 

Stack 3 - C02(3) Analyzer Analyzer Mod 1 SN 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 1 SN 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 

% of Span 

0.00% , 

0.00% 

0.56% 

1.68% 

Difference as 

% of Span 

0.00% 

0.00% 

0.56% 

_~.68% 

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(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 

STACK A (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 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 % of Soan PPM % of Soan 

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 % of Soan PPM % of Soan 

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 % of Soan PPM % of Soan 

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) 1 Span] x 100 

Drift = [(Final System Cal. Response -Initial System Cal Response) 1 Span] 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 1 SN 200 EH Cylinder Value 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 1 SN 200 EJ-I 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) Analyzer Analyzer Mod 1 SN 200 EJ-I Cylinder Value 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 1 SN 600CLD Cylinder Value 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 % of Span 

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 of span 

Stack '1 - 02( 1) Analyzer Analyzer Mod 1 SN 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 1 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 20.9 0.1 

Stack 3 - 02(3) Analyzer Analyzer Mod 1 SN Model 200 Cylinder Value 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 1 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 9.0 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 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 

% of Span 

0.00% 

0.00% 

0.10% 

0.48% --

Difference as 

% of Span 

0.00% 

0.00% 

0.10% 

0.48% 

Difference as 

% of Span 

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 

STACK A (1) Time(sec) PPM PPM PPM % of Span PPM % of SfJan 

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 % of Span PPM % of Span 

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 % of Span PPM % of Span 

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) 1 Span] x 100 O2 

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 1 Scrubber 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 1 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~ange - -- - 9.0 -- - 9.1 

Stack 2 - C02(2) Analyzer Analyzer Mod 1 SN Model 200 Cylinder Value 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 1 SN 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 1 SN 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 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% 0.0 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 % of Span 

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) 1 Span] x 100 

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

Drift = [(Final System Cal. Response - Initial System Cal Response) 1 Span] 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 Cylinder Value 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 Cylinder Value 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 Cylinder Value 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 I SN Model 200 Cylinder Value 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 of span pre run period Syslem Bias can not exceed +1- 7.5 percent at end of period 

Difference as 

% of Span 

0.00% 

0.00% 

0.38% 

0.00% 

Difference as 

% of Span 

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 % of Span 

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 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 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 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 % 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 % 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) 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% 

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 CALI BRA TION DATA 

Note: Difference must be less than +1- 2 percent of span 

Stack 1 - C02(1) 

Analyzer Mod 1 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 1 SN Model 200 Cylinder Value 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 1 SN 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 1 SN 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 

0.2 

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- 5 percent of span 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 

STACK A (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 % 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% 4.9 -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 % of Span 

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 irIJ 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) 1 Span] x 100 

Drift = [(Final System Cal. Response -Initial System Cal Response) 1 Span] 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 1 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 

High - Range 513 513.0 

50.2 49.0 

Stack 2 - NOx(2) Analyzer Analyzer Mod 1 SN 200 EH Cylinder Value 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 1 SN 200 EI-I Cylinder Value 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 1 SN 600CLD Cylindor Value 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 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% 

Q.19tX) 

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.291rh 

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 

STACK A (1) Time (sec) PPM PPM PPM % of Span 

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 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 0.5 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 - Analyzer Cal. Response) 1 Span) x 100 

Drift = [(Final System Cal. Response -Initial System Cal Response) 1 Span) 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.i9I

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 Percent of 

PPM IYt) of Span span 

2.2 Q,04I

Yu 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 1 Scrubber 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 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 a 

Low - Range a Mid - Range 8.98 

High - Range 21 -- --

Stack 3 - 02(3) 

Analyzer Mod I SN Model 200 Cylinder Value 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 Cylinder Value 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 

% 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 

4/14/2008 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 % 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 20,8 -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 % of Span 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 

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 20.9 -0.48% 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 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 1 Scrubber Stack 1-4 

4/14/08 

TYL 

Cylinder 

Serial No. 

CC176437 

CC62111 

CC106732 

ANALYZER CALI BRA TION 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 1 SN Model 200 Absolute Cylinder Value Calibralion 

Analyzer Span: 9.0 Difference 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 1 SN Model 200 Cylinder Value 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 1 SN Model 200 Cylinder Value 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 1 SN Model 200 Cylinder Value 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 percent of span pre run period System Bias can not exceed +1- 7.5 percent at end of period 

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 % 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 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 % of Span 

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 % 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) 1 Span] x 100 

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

Final Values 

4115/2008 

System Cal System Cal 

Response, Cal. Bias 

PPM % of Span 

0.0 0.00% 

4.9 -1.12% 

Final Values 

4115/2008 

System Cal System Cal 

Response, Cal. Bias 

PPM % of Span 

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 of span 

Stack 1 - NOx( 1) Analyzer Analyzer Mod 1 SN 200 EH Cylinder Value 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 1 SN 200 EH Cylinder Value 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 1 SN 200 EH Cylinder Value 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 1 SN 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 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 

0.06% 

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.391yo 

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 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 0.8 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 % of Span 

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 % of Soan 

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) 1 Span] x 100 

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

Final Values 

411612008 

System Cal System Cal Drift, 

Response, Cal. Bias Percent of 

PPM % of Span 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,121

\tl) _O,i6I

X, 

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- 2 percent of span 

Stack 1-02(1) Analyzer Analyzer Mod 1 SN Model 200 Cylinder Value 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 1 SN Model 200 Cylinder Value 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 1 SN Model 200 Cylinder Value 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 1 SN Model 200 Cylinder Value 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- 5 percenl of span 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 

% of Span 

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% 

Upscale 9as ........ -...... -----.--........ ---~ 

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 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 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 % 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% 20.4 -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 % of Span 

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) 1 Span] x 100 

Drift = [(Final System Cal. Response -Initial System Cal Response) 1 Span] 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 1 SN Model 200 Cylinder Value 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 1 SN Model 200 Absolute Cylinder Value Calibration 

Analyzer Span: 8.95 Difference 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 ___ 

CAL 4-'15-081030 

9_.1_ L- ____ ~ 

Stack 3 - C02(3) Analyzer Analyzer Mod 1 SN Model 200 Cylinder Value 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 1 SN Model 200 Cylinder Value 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 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% 

Q,56f% 

1.68% 

Difference as 

% of Span 

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 % of Span 

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 % 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 

4/15/2008 

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) 1 Span] x 100 

Drift = [(Final System Cal. Response - Initial System Cal Response) 1 Span] 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 of span 

Stack 1 - NOx(1) Analyzer Analyzer Mod 1 SN 200 EH Cylinder Value 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 1 SN 200 EH Cylinder Value Calibration 

Analyzer Span: 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 1 SN 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 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% 

0.78%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 % of Span 

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 % of Span 

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) 1 Span] x 100 

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

Final Values 

411712008 

System Cal System Cal Drift, 

Response, Cal. Bias Percent of 

PPM % of Span span 

0.4 O.021

X) 0.04% 

85.5 MO.97I

X) 0.06% 

Final Values 

411712008 

System Cal System Cal Drift, 

Response, Cal. Bias Percent of 

PPM % of Span 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 Cylinder Value 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 I SN Model 200 Cylinder Value 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 Cylinder Value 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 Cylinder Value 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% 

0.57110 

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 % of Span 

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 % of Span 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 % of Span 

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 % of Span 

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 - Analyzer Cal. 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 of span 

Stack 1 - C02( 1) Anatyzer Analyzer Mod 1 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 9:1 

CAL 4-15-081030 

Stack 2 - C02(2) Analyzer Analyzer Mod 1 SN Model 200 Cylinder Vatue 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 1 SN 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 8.9 

CAL 4-15-081045 

Stack 4 - C02(4) Analyzer Analyzer Mod 1 SN 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 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% 

0.56% 

1.68% 

Difference as 

% of Span 

0.00% 

0.00% 

0.56% 

1.681M. 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 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 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 % of Span 

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 - Analyzer Cal. Response) 1 Span) x 100 

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

Final Values 

4/17/2008 

System Cal System Cal Drift, 

Response, Cal. Bias Percent of 

PPM % of Span 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 % of Span 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 % of Span 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 % of Span 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 of span 

Stack 1 - NOx(l) Analyzer Analyzer Mod 1 SN 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 1 SN 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 1 SN 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 1 SN 600CLD Cylinder Value 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 of span pre run period System Bias can not exceed +1- 7.5 percent at end of period 

Absolute Difference as 

Difference % of Span 

0.3 0.06% 

0.8 0.16% 

4.0 0.78% 

0:9 0.18% -

Absolute Difference as 

Difference % of Span 

0.1 0.02% 

0.8 0.16'% 

5.0 0.97% 

1.5 0.29% 

Absolute Difference as 

Difference % of Span 

0.2 0.04% I 

0.9 0.18% 

3.0 0.58% 

0 0.00% --~ 

Absolute Difference as 

Difference % of Span 

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 % of Span 

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 % of Span 

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 % of Span 

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) 1 Span] x 100 

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

Final Values 

3/31/2008 2125 

System Cal System Cal Drift, 

Response, Cal. Bias Percent of 

PPM % of Span 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 % of Span 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 % of Span 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 % of Span 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 1 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 1 SN Model 200 Cylinder Value 

Analyzer Span: 21 

Zero Gas 0 

Low - Range 0 

Mid - Range 8.98 

High - Range 21 

Stack 3 - 02(3) 

Analyzer Mod 1 SN Model 200 Cylinder Value 

Analyzer Span: 21 

Zero Gas 0 

Low - Range 0 

Mid - Range 8.98 

High - Range 21 

Stack 402(4) 

Analyzer Mod 1 SN Model 200 Cylinder Value 

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 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% 

0.10% 

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 

% 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 % of Span PPM % of Span 

Zero Gas 0.0 0.0 0.1 0.48% 0.1 OA8% 

L,J1)Scale Gas 76 21.0 21.0 20.8 -0.95% 20.9 ---------- -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) 1 Span] x 100 

Drift = [(Final System Cal. Response - Initial System Cal Response) 1 Span] 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% 

O2 

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 1 SN Model 200 Cylinder Value 

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 1 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 1 SN Model 200 Cylinder Value 

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 of span pre run period System Bias can not exceed +/- 7.5 percent at end of period 

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 % 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% : 

0.56% 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 

STACK A (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 1 SN 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) 1 Span] x 100 

Drift" [(Final System Cal. Response - Initial System Cal Response) 1 Span] 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 of span 

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 of span pre run period System Bias can not exceed +/- 7.5 percent at end of period 

Difference as 

% of Span 

0.06% 

0.16% 

0.78% 

0.18% 

Difference as 

% of Span 

0.02% 

0.16% 

0.97% 

0.29% _. 

% of Span 

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 % of Span 

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 % of Span 

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 % of Span 

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 % of Span 

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 % of Span 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 % of Span 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 % of Span 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 % of Span span 

1.9 -0.04% -0.10% 

248.5 0.29% 0.88% 

NOx 
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-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 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 I SN Model 200 Cylinder Value 

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- 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 of span 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 

% 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 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) 1 Span] x 100 

Drift = [(Final System Cal. Response -Initial System Cal Response) 1 Span] x 100 O2 

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 Cylinder Value 

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 Cylinder Value 

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 

Analyzer Span: 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 of span pre run period System Bias can not exceed +/- 7.5 percent at end of period 

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 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 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 % of Span 

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) I Span] 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 

Project Hibbing Taconite 

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 of span 

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 Cylinder Value 

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 Cylinder Value 

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 of span pre run period System Bias can not exceed +1- 7.5 percent at end of period 

Difference as 

% of Span 

0.06% 

0.16% 

0.7B% 

0,18% 

Difference as 

% of Span 

0,02% 

0.16% 

0,97% 

0,29% 

Difference as 

% of Span 

0,04% 

0,18% 

0.58% 

0,00%, 

Difference as 

% of Span 

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 % of Span 

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 % of Span 

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 % of Span 

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 % of Span 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 % of Span 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 % of Span 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 % of Span span 

2.2 0.02% 0.061

% 

250.4 0.66% 0.37% 

NOx 
BARR 

Engineering Company 

Project 

Sample Loc. 

Date 

Operators 

Hibbing Taconite 

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 Cylinder Value 

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 - 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 of span 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 

% of Span 

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 

STACK A (1) Time (sec) PPM PPM PPM % of Span PPM 0;', 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% 20.9 -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) 1 Span] x 100 

Drift = [(Final System Cal. Response -Initial System Cal Response) 1 Span] x 100 O2 

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 Cylinder Value 

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 Cylinder Value 

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 Cylinder Value 

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 Cylinder Value 

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 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% 

0.78% 

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 

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 % 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% 5.1 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 line 3 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 of span 

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 of span pre run period System Bias can not exceed +1- 7,5 percent at end of period 

Difference as 

% of Span 

0,06% 

0,16% 

0,78% 

0,18% 

Difference as I 

% of Span 

0,02% 

0,16% 

0,97% 

0.29% 

Difference as 

% of Span 

0,04% 

0,18% 

0,58% 

0,00% 

Difference as 

% of Span 

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 % of Span 

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 % of Span 

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 % of Span 

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 % of Span 

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 % of Span 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 % of Span 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 % of Span 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 % of Span 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 of span 

Stack 1 - 02(1) 

Analyzer Mod I SN Model 200 Cylinder Value 

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 Cylinder Value 

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 Cylinder Value 

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 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% 

0.10% 

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 

% 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 % 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 20.8 -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 % 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% 20.7 -1.43% 

System Calibration Bias = [(System Cal. Response - Analyzer Cal. Response) 1 Span] x 100 

Drift = [(Final System Cal. Response -Initial System Cal Response) 1 Span] x 100 O2 

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 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 Cylinder Value 

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 Cylinder Value 

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 

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 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% 

0.78% 

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 

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 -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 % of Span 

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) 1 Span] x 100 

Drift = [(Final System Cal. Response -Initial System Cal Response) 1 Span] 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 

Project Hibbing Taconite 

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 of span 

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 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 of span pre run period System Bias can not exceed +1- 7.5 percent at end of period 

Difference as 

% of Span 

0.06% 

0.16% 

0.78% 

0.18% 

Difference as 

% of Span 

0.02% 

0.16% 

0.97% 

0.29% 

Difference as 

% of Span 

0.04% 

0.18% 

0.58% 

0.00% 

Difference as 

% of Span 

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 % of Span 

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 % of Span 

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 % of Span 

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 % of Span 

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 % of Span 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 % of Span 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 % of Span 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 % of Span 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 Cylinder Value 

Analyzer Span: 21.0 

Zero Gas 0.0 

Low- Ranf:je 0 

Mid - Range 8.98 

______ l1i9h : 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 Cylinder Value 

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 

STACK A (1) Time (sec) PPM PPM PPM % of Span PPM % of Span 

Zero Gas 78 0.0 0.0 0.0 0.00% 0.1 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 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% 0.1 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 % of Span PPM % of Span 

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) I Span] x 100 

Drift = [(Final System Cal. Response - Initial System Cal Response) I Span] x 100 O2 

-----_._ .. _---_._--_._._._---_. 

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 Scrubber Stack 1-4 

4/4/08 

TYL 

Cvlinder 

Serial No. Certified Value 

Zero Gas CC176437 0.0 

Low-range 

Mid-range CC62111 5.05 

High-range CC106732 9.0 --------------

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 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 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 - 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 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% 

0.78% 

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 

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 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 

4/3/2008 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 

STACK A (1) Time (sec) PPM PPM PPM % of Span PPM % of Span 

Zero Gas 78 0.0 0.0 0.1 1.12% 0.1 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 

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% 4.8 -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 i 

0.00% 

0.00% 

I 

Drift, 

Percent ofi I 

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 CALIBRA TION DATA Cal Date: 3/31108 

Note: Difference must be less than +1- 2 percent of span 

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 1 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.~ ___ 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 of span pre run period System Bias can not exceed +1- 7.5 percent at end of period 

Difference as 

% of Span 

0.06% 

0.16% 

0.19% 

Q,181X, 

Difference as 

% of Span 

0.02% • 

0.16% • 

0.39% i 

0.29% I 

Difference as 

% of Span 

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 % of Span 

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 % of Span 

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 % of Span 

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) 1 Span] x 100 

Final Values 

4/5/2008 745 

System Cal System Cal Drift, 

Response, Cal. Bias Percent of 

PPM % of Span 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 % of Span 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 % of Span 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 % of Span span 

1.9 -0.04% 0.04% 

244.8 -0.43% -0.35% 

NOx 

: 
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-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 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 1 SN Model 200 Cylinder Value 

Analyzer Span: 21 

Zero Gas 0 

Low - Range 0 

Mid - Range 8.98 

High - Range 21 ---------------

Stack 3 - 02(3) 

Analyzer Mod 1 SN 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 1 SN Model 200 Cylinder Value 

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 

~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 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% 

0.10% 

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% 

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) 1 Span] x 100 

Drift = [(Final System Cal. Response -Initial System Cal Response) 1 Span] x 100 O2 

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~_ ,-- - -- --- CC10QU2 

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 1 SN 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 1 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 1 SN Model 200 Cylinder Value 

Analyzer Span: 8.95 

Zero Gas 0 

Low - Range 0 

Mid - Range 5.05 

.. ----~ 

Higll- RClflge 8.95 

Stack 4 - C02(4) 

Analyzer Mod 1 SN Model 200 Cylinder Value 

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 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% 

0.78% 

0.56% 

Difference as 

% of Span 

0.00% 

0.00% 

0.56% • 

0.56% 

Difference as 

% of Span 

0.00% 

0.00% 

0.56% 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 % of Soan 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) 1 Span] x 100 

Drift = [(Final System Cal. Response - Initial System Cal Response) 1 Span] 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 

Project Hibbing Taconite 

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 of span 

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 of span pre run period System Bias can not exceed +1- 7.5 percent at end of period 

Difference as 

% of Span 

0.06% 

0.16% 

0.19% I 

0.18% 

Difference as 

% of Span 

0.02% 

0.16% 

0.39% 

0.29% 

Difference as 

% of Span 

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 % of Span 

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 % of Span 

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 % of Span 

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 % of Span 

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 % of Span 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 % of Span 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 % of Span 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 % of Span 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 Cylinder Value 

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 Cylinder Value 

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 - RangEJ _ -------- - ---- - - ---------

Stae!1 3 - 02(3) Analyzer Analyzer Mod I SN Model 200 Cylinder Value 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 Cylinder Value 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 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% 

0.10% 

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 

STACK A (1) Time (sec) PPM PPM PPM % of Span PPM % of Span 

Zero Gas 78 0.0 0.0 0.1 0.48% 0.1 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 O2 

Drift. 

Percent of 

span 

0.00% 

0.48% 

Drift, 

Percent of 

span 

0.00% 

0.00% I 

Drift, 

Percent of 

I span 

0.00% 

0.00% 

Drift, 

Percent of 

span 

0.00% 

0.00% 
BARR 

Engineering Company 

Project Hibbing Taconite 

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 Cylinder Value 

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 Cylinder Value 

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- 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 percent at 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 % of Span 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 % 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 

4/5/2008 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) 1 Span] 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 

Project Hibbing Taconite 

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 of span 

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 - 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 of span pre run period System Bias can not exceed +1- 7.5 percent at end of period 

Difference as 

% of Span 

O.06(X) 

0.16% 

0.19% 

0.18% 

Difference as 

% of Span 

0.02% 

0.16% 

0.39% 

0.29% 

Difference as 

% of Span 

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 

41612008 1430 

Cylinder Analyzer Cal System Cal System Cal 

Response Value Response, Response, Cal. Bias 

STACKA(1) Time (sec) PPM PPM PPM % of Span 

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 % of Span 

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 % of Span 

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 % of Span 

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 % of Span 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 % of Span 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 % of Span 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 % of Span 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 Cylinder Value 

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 Cylinder Value 

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 - 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 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% 

0.10% 

0.00% 

Difference as 

% of Span 

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 

STACK A (1) Time (sec) PPM PPM PPM % of Span PPM % of Span 

Zero Gas 78 0.0 0.0 0.1 0.48% 0.1 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 % 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 20.6 -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 % 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 20.5 -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 % 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% 20.5 -2.38% ------- -------

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 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 Cylinder Value 

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 Cylinder Value 

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 Cylinder Value 

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 +/- 5 percent of span pre run period System Bias can not exceed +/- 7.5 percent at end of period 

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% 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 % 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% 4.8 -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 of span 

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 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 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 of span pre run period System Bias can not exceed +1- 7.5 percent at end of period 

Difference as 

% of Span 

0.06% 

0.16% 

0.19% 

0.18% 

I Difference as ' 

% of Span 

0.02% 

0.16% 

0.39% 

, .. 0.29% 

Difference as 

% of Span 

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 % of Span 

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 % of Span 

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 % of Span 

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 % of Span 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 % of Span 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 % of Span 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 Scrubber Stack 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 Cylinder Value 

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 Cylinder Value 

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 of span 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 

% 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 

4/7/2008 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 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 20.6 -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 O2 

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 Cylinder Value 

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 of span 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 % 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 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% 
Pitot Tube Number: _~3-....:1 __ 

Length: _-=3:...;ft.:...-_ 

1. Are face openings perpendicular to tube axis? 

m YES ( go to 2) o NO (go to 1a) 

2. Are face openings parallel to longitudinal axls? 

I$l YES ( go to 3) o NO (go to 2a) 

S-Type Pitot Tube 

Geometry Check 

Function: 

Inspection Date: z;? fo 8' 

Technician: ftfl/ 1<7. 

M-5 Probe 

1a. If NO, Is angle less than 10"? 

o YES ( go to 2) 

~ I 

--~--. I I , . 

2a. If NO, 15 angle less than 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 of equallenglh? 

ILl YES ( go to 4) o NO (go to 3a) 

--t----~~~----~=>-----

4. Are center-Ilnes of legs coincident? 

r¥l YES ( go to 5) o NO (go to 4a) 

--~----~~----<~~-----

5. Does this pltot tube pass all of the above criteria? 

,+:-_.ww; -

____ 3~-­ ~ ':''l!_ 

3a. If NO, is difference less than 1/8 inch? 

o YES (go to 4) ONO (discontinu~ use) 

4a. If NO, are center-lines of face openings less than 1/32 inch? 

o YES ( go to 5) 0 NO (discontinue use) 

[$I YES o NO 
Pilot Tube Number: 

Length: ~r 

FUnCtiOn:~ J Free 

1. Are face openings perpendicular to 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 of equal length? , " 

~ YES ( go to 4) !~i: 0 NO (go to 3a) 

;;:t 

4. Are center-lines of legs coincident? 

Q;r YES (go to 5) 0 NO (go to 4a) 

--k----~~----<-~----· 

5. Does this pitet tUDe pass aa of the above criteria? 

S-Type Pitot Tube 

Geometry Check 

·Inspection Date: L -/ ( ~o 1-

Technician: Tf L 

1a. If NO, is an~le less than 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 ( go to 5) o NO (discontinue use) 

DYES ONO 
Pitot Tube Number: 

Length: l{1 

FunctiorG5P~~ Free 

1. Are !ace openings perpendicular to tube axis? 

~YES (go to 2) 0 NO (go to 13) 

1\--- I I 

'-~-f--:-~-:--t------- . 

~~-: - . . . 

2. Are face openings parnJlel to longitudinal axis? 

AYES (go to 3) 0 NO (go to 2a) 

S-Type Pitot Tube 

Geometry Check 

Inspectlon Date: ( - ~ - O~ 

Technician: MoM!< 'Z... 

1a. If NO. is angle less than 1O.? 

o YES ( go to 2) . o NO (discontlnue use) 

.~ ~:-. ~ ~ . 

-~~--. --~--. ! ~ ~ ! 

Za If NO. 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 of equal length? 

oo..YES ( go to 4) 

.:::Jfw. 

o NO (go to 3a) 

4. Are cenler-lines of legs coincident? 

~'ye:S{go(05) o NO (go to 4a) 

--&----~~---~-)-----

5. Does this pttot lube pass all of the above criteria? 

~--'~3~'- .M __ 

---- - *:=--

32. IrNO. is difference less than 1/8 Inch? 

DYES ( go to 4) o NO (discontinue use) 

v 

-F -----if ~-

4a. If NO. are center· lines of face openings less than 1/32 inch? 

DYES (go to 5) 0 NO (discontinue use) 

~YES ONO 
Pitot Tube Number: 

Length: If' 

1. Are. ~ 0;:>enln95 perpendicular to tube axis? 

:q YES (go 10 2) 0 NO (go to 1a) 

- I I r ...... 

~-~-----

~ 

I toc:a I 

. J--~--:--: , 

2. Are face openings parallel to longitudinal axis? 

~ES(got03) O· NO(got02a) 

....... "'" 

S-Type Pitot Tube 

Geometry Check 

I nspection Dale: I J. -'3 1-0 +-

Technician: T l( L 

1a. If NO, is angle less than 10'? 

o YES (go(02) 

2a. If NO, is angle less than 5-.>? 

o YES (got03) 

o NO (discontinue use) 

o NO (discontinue use) 

,,~~ Ed~E-=7~1-~---:--lf{~;~" t.~O, ---~---------~~ , ;..J~_ 

-I: -f: 

3. Are legs of eqvallength? 

1Sf YES ( go to 4) o NO (go to 3a) 

4. Are center-lines of legs coincident? 

~YES(90105J 0 NO (go to4a) 

t---~~----(?~-----

5. Does this pilot tube pas!; all of the above criteria? 

........-::---

Technician Signature: S ~ ~~ 

Reviewed by: U-~ 

3a. If NO, is difference less than 1t8 inch? 

o YES (got04) o NO (discontinue use) 

F---

4a. If NO, are center~ines of face openings less than 1/32 incll? 

o YES ( go 105) 0 NO (cliscontinue use) 

C!(YES oNO 
REFERENCE STANDARDS 

Hart Scientific 9103-A sIn A1B289 

Hart Scientific 9140 sIn A1 B085 

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 less than 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 

Report No. A 182024 

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 

Hart Scientific 

Hart Scientific 

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 

REFERENCE TEMPERATURE, deg.R 

Are extrapolated limits less than 1.5%? 

If not acceptable, 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 

Hart Scientific 9103-A sIn A1B289 

Hart Scientific 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) 

% Diff Abs. T 

Is difference less than 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 

Report No. A1 B0718 

Report No. A 1 B2024 

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 Hart Scientific 

12/26/2007 Hart Scientific 

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 

REFERENCE TEMPERATURE. 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 

Hart Scientific 9140 sIn A1B086 

Temperature Calibration Points 

Reference Deg F (To) 

Probe Temp (deg F) 

Reference Temp (deg R) deg F + 460 

Probe Temp (de9 R), deg F + 460 

Difference (degrees) 

% DiffAbs. T 

Is difference less than 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 Hart Scientific 

12/26/2007 Hart Scientific 

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 

REFERENCE TEMPERATURE, deg.R 

Are extrapolated limits less than 1.5%7 YES 

If not acceptable, describe corrective action: 

Technician signature 

QA signature 

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 

Hart Scientific 91 03-A sIn A1 B289 Report No. A1B0718 12126/2007 Hart Scientific 

Hart Scientific 9140 sIn A1 B086 Report No. A1 B2024 12126/2007 Hart Scientific 

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 

Reference Temp (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 

% Diff Abs. 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 

REFERENCE TEMPERATURE, deg.R 

Are extrapolated limits less than 1.5%? YES 

If not 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)' '7 SO 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 -j Qt.'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: P J20sSth/i\qyPyrometer 

q-J)A-

~~ 

'-\ 0·\ . <.. -c.. 

350, -,-z.. 

3c i, \ ~ 

Z 5Ll{ Qj 

z:.~\ ,of152.,1-<':' 

10'\,()~ 

5IrC[~ 

() , ll-;-

-- y~ .05 
BARR 

Engineering Company 

Pyrometer Number: eJ.\ ~ l\. '/ cPyrometer Reference: Ll -3¢c\<- • i,m(: -g i 2-

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 

CALI BRA TION 

Date: .~,. ~. ~15' 

Technician: 'j). \4,ss.vV'i\\<UY 

Pyrometer 

!'J \ (l-

\ 

yo' ,i ~ 

3m.,') 

',ot. \'1' 

Z S-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; 01 ci Me 39 0 

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 

CALI BRA TION 

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. .. r c.. 

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 

,3 C):::). 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 

CALI BRA 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 

I S-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: en f i" l'-i -(:y~SI ) i-JP;:rj(vle; .. rrJ}r.rc/7:6y 1 

Range Setting: () ~ L.. i' I~ I 0 

Date of Calibration: ~ - 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 

mtc 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.e fT - (~. 0 0 5) J rJrs rj /U..efl.Jte')/U:fC"....y-1 

Range Setting: 0 ' (... ;1 }~z. C,) 

Date of Calibration: 6' &> . 0 ~ 

Technician: P,¢.-I),SSVv\. :t\c.':.iV 

Notes: 

Barr Engineering Co. 

4700 W. 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 

I 'hs .. 

,'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 of Calibration: :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 . -LO r, 

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 of Calibration: 3 - :) . 0~ 

TeChnician:iI)J~ ch.S\lVl·)\.v{ -

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(,(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 of Calibration: :l r ~ - 0 ~ 

Technician: 91, R>s..s )\'1,') t e: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 

G,' '" U(./ 

0, c... ) I0.51/' 

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: "(Ii ft - H - DOS)) ".r~..syf'levle.Vn:.;t",-,\( I 

Range Setting: 0 - 1. I' l~ 7 0 

~<... 

Date of Calibration: J,';;' 0 lS 

Technician: p r ~Y'\: ,\(.1'/' 

Notes: 

Barr Engineering 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 . j C, 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 

After Adjustment 

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 SPRINGS BLVD. • RIVERSIDE, CA 92507 

TELEPHONE (951) 653-6780. FAX (951) 653~2430 

Report Of Analysis 

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 analyses were perfonned in accordance with Procedure G1 of the EPA Traceability Protocol, Report Number EPA-6001R97/121, dated 

September 1997. 

The above analyses are invalid if the cylinder pressure is less ihan 150 psig. 

D.C~M---/ ANALYST: __________ ~~~~ __________ APPROVED: ____ ~~----____ --------

D.C.Marrin 

The only liability of this company for gas which fails to comply with this analysis shall be replace ent or reanalysis thereof by the company without 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 Of Analysis 

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 accordance with Procedure G1 of the EPA Traceability Protocol, Report Number EPA-SOO/R97/121, dated 

September 1997. 

The above <i!1.alyses are invalid if the cylinder pressure is less than 150 psig. 

ANALYST: ~.~:t:t::s APPROVED: ____ ~~--------------

B.M.Marrin 

The only liability of this company for gas which fails to comply with this analysis shall be replace ent or reanalysis thereof by the company without 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.~ .. 

rc 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 B yo 

TElnl 
~ 

51111 SCOTT-MARRIN, INC. 

6531 BOX SPRINGS BLVD. • RIVERSIDE, CA 92507 

TELEPHONE (951) 653~6780. FAX(950 653~2430 

Report Of Analysis 

EPA Protocol Gas Mixtures 

BARR01 

TO: Barr Engineering Co 

Attn: Pete Rossmiller 

REPORT NO: 51880-04 

REPORT DATE: June 12, 2007 

CUSTOMER PO NO; 2007-0518TYL 1 

4700 West 77th Street 

Minneapolis, MN 55435-4803 

(952) 832-2890 

CYLINDER NUMBER: CC7380 

CONCENTRATION 

COMPONENT (v/v) 

Nitric oxide 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 ANAL YSIS 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 analyses were performed in accordance with Procedure G1 of the EPA Traceability Protocol, Report Number EPA-600JR97/121, dated 

September 1997. 

The above analyses are invalid if the 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 of this company [or gas which falls to comply wIth tms analysIs shall be rePlarent or reanalysIs thereof by !na company 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 Of Analysis 

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 OTYL 1 

NIST TRACEABLE 

REFERENCE STANDARD 

SRM 1683b 

The above analyses are traceable to the National Institute of Standards and Technology by intercomparison with the reference 

standard listed herein. Where indicated, volumetric and gravimetric reference standards are traceable thru use of our analytical 

balance .. N1ST Report Number MMAP 232.09/202491. 

ANALYST: ro, c. !Z1~ APPROVED: ____ -7~ ______________ __ 

D.C.Marrin 

The only liability of this company for gas which fails to comply with this analysis shall be replace ent or reanalysis thereof by the company 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 Of Analysis 

EPA Protocol Gas Mixtures 

BARR01 REPORT NO: 50895-02 

TO: Barr Engineering Co 

Attn: Pete Rossmiller 

4700 West 77th Street 

Minneapolis, MN 55435-4803 

(952) 832-2890 

REPORT DATE: November 30, 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 

± EPA UNCERTAINTY 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 accordance with Procedure G1 of the EPA Traceability ProtOCOl, Report Number EPA-600/R97/121. dated 

September 1997. 

The above analyses are iova 'd if L'1e ylioder pressure is less than 150 psig. 

ANALYST: ____ ~_=~~~~~ _____ APPROVED: ____ ~~---------------

M.S.Calhoun 

The only liability of this company jor gas which iails to comply with this analysis shall be replac ment cr reanalysis thereof by the company 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 Of Analysis 

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: 2007/09/20TYL 1 

CYLINDER NUMBER: CC62111 CYLINDER SIZE.: .1.50A(141 §)td cu ft) CYLINDER PRESSURE: 2000 psig. 

COMPONENT CON CENTRA 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 of the EPA Traceability Protocol, Report Number EPA-600/R97/121, dated 

September 1997. 

The above analyses are inva id if the ylinder pressure is less than 150 psig. 

ANALYST: ____ ~~~~~~~~ _____ APPROVED: ____ ~~--__ ------------

M.S.Calhoun J. T. Marrin 

The only liability of this company for gas which fails to comply with this analysis shall be replace ent or reanalysis thereof by the company without extra cost 

STANDARD CALIBRATION GASES IN ALUMINUM CYLINDERS 
Appendix F 

Stack Test Plan 
Test Plan 

For Temporary NOx Monitoring Installation at 

Hibbing Taconite Company 

Date Test Plan created/revised: March 11,2008 

Scheduled Test Dates: March 31-April 7 and April 8-15, 2008 

PART I: 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 

Minnesota Air Emissions Permit Number: 13700061-002 

AQD File Number: 541 

Reason emissions units are to be tested: 

Testing company contact 

Tom Kuchinski 

Barr Engineering Company 

4700 West 77th Street 

Minneapolis, MN 55431 

Phone: (952) 832-2727 

tkuchinski@barr.com 

Testing is a voluntary effort through MPCA-issued Administrative Order by Consent Decree 

(effective 3/3/08) to evaluate the variability of NO x emissions as it relates to normal operations of 

taconite production. This testing will also provide HTC with additional data for generating a 

predictive equation for NOx emissions based on operating parameters that HTC currently 

monitors continuously. 

The table below provides the emissions units' plant nomenclature, permit identification and plant 

location. Stack drawings showing stack dimensions and test port orientation and locations relative 

to airflow disturbances will be included in the final report. 

Process unit Emissions unit Stack vent 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 
PART II: Testing Requirements 

The following table identifies pollutants to be detennined; applicable emissions limit and units, 

and associated regulation for each emissions unit and stack vent. 

Process unit Stack Pollutant Specific Methods/Procedures Required 

nomenclature vent Tested/Permit Citation 

number Limit 

Line 1 and Line 3 SV021 NOx Required by Administrative 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 of tests runs will be perforrned in 

& Permit limit for place of three 1-hour test runs) 1 

NOx: 7017.2030 

Not Applicable 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 of dry 

molecular weight by modified EPA Method 

3A1 

Moisture content by modified EPA Method 41 

1 EPA test method modifications are detailed in Section VI. 

2 Submission of the test report will coincide with the Administrative Order by Consent deadline of June 30, 

2008, as indicated in Part VI Test Report. 
Part III: Operating Conditions 

HTC intends to vary process operations during the testing program. Parameters that will be 

monitored during the test include, but are not limited to 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 Air Temperature Degrees F Hourly average 

Stack gas flow rate continuous 

monitoring of gas 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 cubic feet 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 de mist, 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 
Part IV: Test Methods 

All tests will be performed using the following USEP A reference test methods. 

Pollutant, Test Method 1 

parameter 

NOx, Method 1 Sample and Velocity Traverses for Stationary Sources. Twelvevolumetric point traverse for selecting representative pOint for continuous 

air flow rate, monitoring 

temperature Method 2 Determination of Stack Gas Velocity and Volumetric Flow Rate. 

and moisture An US" type pitot tube fixed at a representative point in each stack. 

Differential pressure recorded with one minute and one hour 

averages in inches of water. 

Stack temperature using a type K thermocouple, recorded with 

one minute and one hour averages in of. 

Method 3A Determination of Oxygen 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 event the sources are 

consistently saturated, further moisture calculations will assume 

saturation at the average stack temperature. 

Method 7E Determination of Oxides of Nitrogen Emissions from Stationary 

Sources. The measurement of NOx 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 except that a 

system bias of up 7.5% of span will be used for the upper limit of 

bias correction. A span range of -500 ppm is expected. 45 

minutes of data within an hour will 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 

Part V: Continuous Emissions Monitors 

There are no continuous emissions monitors installed on the sources to be tested. 

2 
Part VI: Other 

Test Dates: March 31 through April 14,2008. The proposed test schedule follows!: 

Line 3 

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 of data 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 of data collection 

at -12:00 p.m -12:00 pm 

at Line 1 

I .. The test schedule may be modified pnor to the test dates. T estmg may be extended due to process 

upsets, test equipment failure or prolonged daily calibrations. 

HTC and Barr Engineering contacts will make themselves available for a pretest meeting prior to 

March 25. At the preference of the MPCA, HTC suggests the pretest meeting be conducted by 

telephone. 

Maintenance: A description of any necessary work done within 30 days prior to the test and the 

normal maintenance schedule followed will be included in the test report. 

Test Reports: One hard copy of the test report will be submitted to the MPCA. HTC requests 

that the required test report submittal deadline coincide with the Administrative Order by Consent 

deadline of June 30,2008 because of the large volume of data to be processed and summarized. 

NOx emissions concentration data and calculated emissions rates will be submitted on CD-ROM 

in a non-protected spreadsheet format (Excel). 

Test plans and report snbmittals will be addressed to: 

Andrew Place 

Performance Test Coordinator 

Compliance and Enforcement Section-Industrial Division 

Minnesota Pollution Control Agency 

520 Lafayette Road 

St. Paul, MN 55155-4194 

Closing Remarks 
If there are questions or comments about the information provided, please contact me by 

telephone or e-mail. 

Andrea Hayden 

Section Manager - Environmental 

Hibbing Taconite Company 

Attachments: 

c: Tom Kuchinski-Barr Engineering Company 

2 
Minnesota Pollution 

Control Agency 

520 Lafayette Road 

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 your facility located in: Hibbing, Minnesota. ---~~------

Test Plan 

Submitted on (date): March 11, 2008 Discussed on (date):-.-.:..:M.:.:::a:.:.rc:::.:h~27:..!,,-,2:.::0~0:.:::8 _________ _ 

Your test 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 bias will be completed at least once 

daily and may be completed more frequently if need be. The bias results must be within 7.5% of span or data 

between the failed calibration and the previous passing calibration will be considered invalid. If the drift is 

above 3% of span, the unit will need to be recalibrated. If this methodology does not appear to be appropriate 

after the test is begun, please contact the MPCA to discuss the situation. 

2. To determine valid data points follow standards similar to Minn. R. 7017.1160, subp. 2. During periods of 

calibration, valid data points will be used to calculate the emissions for that hour. Note hours of calibration in 

the test report. 

3. Test shall be completed over a range of operating 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 or test upsets may occur, please contact the MPCA to discuss 

options to proceed and/or consider handling data if problems 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 1 of 2 
Andrew Place, Performance Test Coordinator 

Compliance and Enforcement Unit 

Minnesota Pollution Control Agency 

Please contact me at 651-296-7169 if you have any questions regarding this approval. 

Please be aware that enforcement action will be taken for performance test failures indicating emissions above applicable limits 

(excess actual emissions to the environment). Failures commonly result in assessment of a monetary penalty. Upon the first test 

failure, the Company should take immediate measures to minimize emissions. The measures taken should be documented, as they 

will become part of the record of corrective 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 Page 2 of 2 
Message Page 1 of 1 

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 NOx test are included with this message. 

If you have problems with any of the attachments feel free to contact me. Additional forms are provided at 

www·Rca.state.mn.usiairiRerformancetest.html 

Sincerely, 

Andy Place 

Performance Test Coordinator 

Minnesota Pollution Control Agency 

520 Lafayette Road 

St. Paul, MN 55155-4194 

(651) 296-7169 

5/21/2008 
Appendix G 

Project Participants and 

Contact Information 
Project Participants and Contact Information 

Minnesota Pollution Control Agency 

Andrew Place - Performance Test Coordinator 

Hibbing Taconite Company 

Andrea Hayden - Section Manager, Environmental 

Andrew S. McDowell - Environmental Coordinator 

Jeff Jones - Process Engineer 

Barr Engineering Company 

Tim Russell - Vice President/Chemical Engineer 

Tom Kuchinski - Stack Testing Supervisor 

Tom Leier - Stack Test Technician 

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 

Minnesota Pollution Control Hibbing, MN 55746-0589 

Agency (218) 262-6856 

520 Lafayette Rd. N. (218) 262-6877 fax 

Saint Paul, Minnesota 55155 ajhavden@cleveland-cliffs.com 

(651) 296-7169 

andrew.Qlace@state.mn.us 

#2369C15 

Barr Engineering Co. 

Tom Kuchinski 

Stack Testing Supervisor 

Barr Engineering Company 

4700 W. 77 Street 

Minneapolis, MN 55435 

(952) 832-2727 

(952) 832-2601 fax 

tkuchinski@barr.com