CLIFFS NATURAL RESOURCES 

Northshore Mining Company 

10 Outer Drive, Silver Bay, MN 55614 

P 218.226 4125 F 218 226.6037 clifIsnaturaIresources.com 

November 9, 2009 

Mr. Robert Beresford 

Minnesota Pollution Control Agency 

525 Lafayette Road North . 

St. Paul, MN 55165-4194 

Re: Summary of Results from Extended NOx Testing at Northshore Furnaces 11 and 12 

Dear Mr. Beresford: 

On April 7, 2008, Northshore Mining and the Minnesota Pollution Control Agency voluntarily entered into 

an Administrative Order by Consent with regards to nitrogen oxide (N0x) emissions from Northshore's 

induration furnaces. Part of that Order required Northshore to submit an Alternative Method Proposal, 

which it did on June 30, 2008, Northshore's Alternative Method Proposal summarized an analysis of 

emissions measurements from Northshore's Furnaces 11 and 12 that demonstrated that NOx emissions 

from these furnaces were of small magnitude and low variability. 

As part of the Alternative Method Proposal, Northshore committed to annually collect and assess 

additional emissions data from the waste gas portions of Furnaces 11 and 12. This letter is provided as a 

summary of the 2009 testing, the results of which are attached. 

The NOx data collected during this testing campaign was comparable to test data collected during 2008. 

Overall emissions from the waste gas sections of each furnace remain low at less than 80 lb/hr and the 

Relative Variability Index (as defined in.the 2008 Administrative Order) for Furnaces 11 and 12 was 0.14 

and 0.09, respectively. These indices remain below the 0.20 threshold for each furnace, indicating 

continued stability of NOx concentrations. 

If you have any questions regarding this information, please feel free to contact me at (218) 226-6076. 

Sincerely, 

Scott A. Gischia, P.E. 

Section Manager, Environmental Services 
Furnace 11 Stack Testing , :, 1104, 1165 ; 104 1 1 05 -. 1104 ,. . '1105 

Date Tonnage 

, Combustion Zone 

Tempetature (F) 

Gas MOW 

:. (mdfh) 

, NOX, ' 

ppit 

N1Dx,. ' 

: ppri t ' 

Airflow, - 

dscfm ' .. 

' Airflow 

*.': dsefin 

Emission 

kite.; IbIlir . 

: Etillssiori

Rate lb/hr, ,! 

Total '. 

Emisslon . , Rate , lb/hr , Flags 

.F11 WG 

FWA 

07/27/09 19:00 252 2322 142 

07/27/09 20:00 249 2325 142 

07/27/09 21:00 249 2329 141 

07127/09 22:00 249 2322 141 

07/27/09 23:00 251 2322 140 

07/28/09 00:00 250 2322 141 

07/28/09 01:00 250 2322 142 

07/28/09 02:00 250 2325 141 

07/28/090300 : . - 207 ' 2145 115 

07/28/09 04:00 251 2326 137 

07/28/09 05:00 249 2328 139 

07/28/09 06:00 246 2324 139 

07/28/09 07:00 251 2326 143 

07/28/09 08:00 242 2326 141 

07/28/09 09:00 250 2325 142 

07/28/09 10:00 247 2327 141 

07/28/09 11:00 246 2327 143 

07/28/09 12:00 242 2327 144 

07/28/09 13:00 235 2328 142 

07/28/09 14:00 249 2323 142 

07/28/09 15:00 251 2327 142 

07/28/09 16:00 251 2328 143 

07/28/09 17:00 248 2329 143 

07/28/09 18:00 253 2326 143 

07/28/09 19:00 251 2328 143 

07/28/09 20:00 250 2327 139 

07/28/09 21:00 250 2324 135 

07/28/09 22:00 249 2320 135 

07/28/09 23:00 247 2324 140 

07/29/09 00:00 249 2326 139 

07/29/09 01:00 249 2322 137 

07/29/09 02:00 249 2322 135 

07/29/09 03:00 249 2326 134 

07/29/09 04:00 249 2327 134 

07/29/09 05:00 249 2327 135 

07/29/09 06:00 252 2325 137 

98 97 50,942 56,921 359 39.6 75.5 C 98 

98 

98 

100 

101 

102 

102 

99 

See Below '- 

94 

96 

95 

97 

C 97 

99 

103 

99 

99 

97 

98 

95 

93 

93 

95 

97 

96 

95 

99 

101 

99 

102 

106 

105 

103 

104 

98 

99 97 50,886 56,925 36.1 39.7 75.9 

99 98 51,500 57,276 36.6 40.0 76.7 

101 99 52,986 57,363 38.3 40.5 78.8 

102 100 53,750 57,665 39.4 41.3 80.6 

104 101 53,974 57,898 40.1 42.1 82.1 

103 101 53,821 57,966 39.8 42.0 81.8 

101 98 53,768 57,874 38.8 40.8 79.5 

95 93 54,238 58,410 36.9 38.8 75.8 

97 95 53,112 57,043 36.9 38.6 75.5 

96 94 53,965 58,119 37.2 39.1 76.4 

98 96 53,088 57,302 37.3 39.5 76.8 

98 97 52,974 57,569 37.3 39.8 77.2 

100 99 53,318 57,569 38.1 40.9 79.0 

103 102 53,283 57,490 39.4 42.1 81.4 

100 99 52,971 57,159 37.9 40.4 78.3 

100 99 51,229 56,829 36.6 40.2 76.8 

98 97 48,708 54,629 34.3 37.9 72.2 

99 98 51,058 57,166 36.2 40.0 76.2 

96 95 51,956 57,501 35.7 39.1 74.8 

93 92 51,882 57,690 34.7 38.0 72.7 

94 93 52,738 57,690 35.5 38.4 73.9 

96 95 52,260 57,729 35.9 39.1 75.0 

98 97 52,021 57,230 36.6 39.7 76.3 

97 95 52,788 57,001 36.5 39.0 75.5 

96 95 52,165 56,687 35.9 38.4 74.3 

99 98 51,698 57,017 36.8 40.1 76.9 

102 100 50,859 57,419 37.0 41.1 78.1 

100 99 51,759 57,717 37.1 40.9 78.0 

103 102 52,251 58,010 38.5 42.3 80.9 

107 106 52,435 57,991 40.2 43.9 84.1 

105 104 52,189 58,056 39.4 43.4 82.8 

104 103 52,877 58,408 39.4 43.0 82.4 

104 103 53,827 58,431 40.2 43.1 83.3 

98 97 54,627 58,997 38.5 41.2 79.7 

This datapoint is excluded from the analysis because the furnace was offline for -30 minutes durin the hour to address an overload of the 124A conve or. 

07/28/09 03:00 207 2145 , 115 77 75 53,157 57,944 29.0 31.0 60.0 76 

R
Furnace 12 Stack Testing ,1264 ,12,5 1204 

. - 1205 .104 2 - „ 1205 -. 

Date, Tonnage 

, Combustion Zone 

. . Temperature (F)--, 

' Gas low ' 

(nicfb). : NOx, ppm 

,,, , 

NOx, ppm 

'AirfloW, 

Asefrn 

' Airflow, 

:clacfm 

Emission' - 

Rate, liaihr 

Emission 

Rate,sibihr 

2 Emission 

Rate,lbilir - Flags 

F12 WG 

FWA 

07/29/09 10:00 244 2301 140 

07/29/0911:00 241 2299 135 

07/29/09 12:00 240 2300 135 

07/29/09 13:00 238 2302 133 

07/29/09 14:00 237 2297 133 

07/29/09 15:00 237 2300 132 

07/29/09 16:00 235 2303 132 

07/29/09 17:00 243 2299 133 

07/29/09 18:00 245 2299 134 

07/29/09 19:00 246 2301 133 

07/29/09 20:00 246 2301 134 

07/29/09 21:00 246 2300 134 

07/29/09 22:00 245 2301 133 

07/29/09 23:00 245 2301 133 

07/30/09 00:00 245 2301 133 

07/30/09 01:00 245 2301 134 

07/30/09 02:00 247 2302 133 

07/30/09 03:00 250 2304 133 

07/30/09 04:00 250 2297 135 

07/30/09 05:00 251 2299 135 

07/30/09 06:00 252 2300 134 

07/30/09 07:00 255 2303 135 

07/30/09 08:00 249 2302 135 

07/30/09 09:00 249 2301 135 

07/30/09 10:00 250 2296 134 

07/30/09 11:00 249 2295 134 

07/30/09 12:00 249 2298 133 

07/30/09 13:00 249 2297 133 

07/30/09 14:00 252 2301 135 

07/30/09 15:00 253 2299 135 

07/30/09 16:00 250 2299 135 

07/30/09 17:00 248 2301 135 

93 93 57,738 54,950 38.4 36.6 74.9 93 

95 

95 

95 

94 

93 

93 

94 

94 

93 

93 

93 

92 

92 

91 

91 

91 

91 

90 

91 

90 

- 87 

91 

92 

91 

90 

88 

88 

89 

88 

89 

89 

95 95 53,707 54,561 36.4 37.1 73.4 

95 95 53,416 54,338 36.3 37.0 73.2 

94 95 53,283 54,159 36.0 36.7 72.8 

94 94 53,527 54,212 35.9 36.4 72.4 

93 93 53,102 53,862 35.5 36.0 71.5 

92 93 53,166 53,973 35.2 35.9 71.1 

94 94 53,288 54,069 35.7 36.3 72.1 

94 94 53,163 54,053 35.7 36.3 72.0 

93 94 53,420 53,953 35.6 36.3 71.9 

92 93 53,394 54,043 35.3 35.9 71.2 

92 93 53,304 54,171 35.3 36.0 71.2 

92 92 53,697 54,398 35.2 36.0 71.2 

91 92 53,708 54,404 35.0 35.9 70.9 

90 91 53,774 54,171 34.8 35.2 70.1 

90 91 53,504 54,206 34.7 35.3 70.0 

91 91 53,888 54,513 35.0 35.7 70.7 

91 91 54,069 54,848 35.1 35.8 70.9 

90 90 53,540 54,183 34.5 35.1 69.6 

90 91 54,471 55,048 35.3 35.9 71.1 

90 91 54,179 55,011 34.9 35.7 70.6 

87 88 54,821 55,357 34.3 34.8 69.0 

90 91 54,203 54,962 35.0 35.8 70.8 

92 92 53,870 54,666 35.6 36.0 71.6 

91 91 54,095 54,624 35.3 35.7 71.0 

89 90 53,715 54,573 34.4 35.2 69.6 

88 89 54,446 54,876 34.2 34.8 69.0 

88 89 54,381 55,021 34.3 35.1 69.3 

88 89 54,540 55,196 34.6 35.3 69.9 

88 89 54,283 55,339 34.0 35.1 69.2 

89 90 53,784 54,424 34.3 35.0 69.3 

88 89 53,650 54,434 34.0 34.8 68.8 

R
Results of the July 27-30, 2009 Continuous 

Nitrogen 0:rick: -(N0x) Monitoring on the Line 

11 (EU104) and Line 12 (EU114) Pellet 

Indurating Furnaces at the Northshore Mining 

Company's Taconite Facility 

Located in Silver Bay, iinhinesota 

MPCA AQD File Number 27A 

Air Emission Permit Number 07500003-004 

Prepared for 

Northsh ore Mining Company 

Silver Bay, Minnesota 

November 2009 

4700 West 771h Street 

Minneapolis, MN 55435-4803 

Phone: (952) 832-2600 

Fax: (952) 832-2601 
Northshore Mining Company 

Silver Bay, Minnesota 

Stack Test Report 

Table of Contents 

Report certification 1 

• Certification of sampling procedures. 1 

Certification of Test Report by Testing Company . 1 

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

Introduction 2 

Results 3 

Process Description 4 

Sampling and Analysis Procedures 5 
List of Tables 

Table 1 Nitrogen Oxides (NO) Emissions - Furnace 11 

Table 2 Nitrogen Oxides (NO) Emissions - Furnace 12 

List of Figures 

Figure 1 Test Port Locations — Furnace 11 Waste Gas Stacks (SV104 & SV105) 

Figure 2 Test Port Locations — Furnace 12 Waste Gas Stacks (SV114 & SV115) 

List of Appendices 

Appendix A Report Calculations and Nomenclature 

Appendix B Instrument Output 

Appendix C Calibration Data 

Appendix D Cylinder Gas Certifications 

Appendix E Process Operating Data 

Appendix F Stack Test Plan 

Appendix G Project Participants and Contact Information 

11 
Report 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, 

Mark Petersen 

Air Quality Technician 

Barr Engineering Co. 

Signature: //1 

Date 

Certification of Test Report by Testing Company: 

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. All exceptions are listed and explained below. 

Signature: 

Torn Kuchinski Date 

Stack Testing Services Supervisor 

Barr Engineering Co. 

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 an. 7 !I ained below. 

Signature: I Date CEIennif r Ram 

nv onmentaT ngineer 

Northshore Mining Company 
Introduction 

Barr Engineering performed continuous nitrogen oxides (NO„) emissions testing at Northshore 

Mining Company located in Silver Bay, Minnesota. The Furnace 11 testing was conducted between 

July 27-29, 2009 and the Furnace 12 testing occurred from July 29-30, 2009. 

The testing was performed in accordance with the Administrative Order by Consent voluntarily 

entered into by Northshore Mining and the Minnesota Pollution Control Agency on April 7, 2008. 

Recurrent annual stack testing is part of Northshore's June 2008 Alternative Method Proposal that is 

used to demonstrate current NOx emissions from the facility. During the tests, the indurating 

furnaces were operated under normal conditions. 

A test plan dated June 20, 2009 was submitted to the Minnesota Pollution Control Agency (MPCA). 

A pretest meeting was held on July 23, 2009 with representatives of Northshore Mining Company, 

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

letter issued on July 27, 2009 are provided in Appendix F. Testing was performed as required with 

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

Barr Engineering performed the NO testing with Jennifer Ramsdell of Northshore Mining Company 

coordinating 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. 

At least 30 hours of valid one-hour NOx emission data points were required from each Waste Gas 

stack. There was 36 hours of valid data collected on Line 11 and 32 hours on Line 12. NO 

emissions were measured simultaneously from the two indurating furnace Waste Gas stacks at each 

furnace line. 

2 
Results 

Testing of Northshore Mining Company's Furnace 11 resulted in a total of 36 valid one-hour data 

points collected and Furnace 12 resulted in a total of 32 data points. 

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

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

could be used to represent one hour of valid data. This would allow 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 with a "C" flag. 

The stack temperatures were also recorded and used to calculate the moisture content of the stacks. 

Moisture content of the stack gas is determined by calculating the saturated value using the average 

stack temperature for each hour. These sources have continuous airflow monitors that record in 

actual cubic feet per minute (acfm) and these data are used with the moisture content and barometric 

pressure to calculate a dry standard cubic feet per minute (dscfm) airflow rate. The dscfm and NOx 

concentrations are used to calculate the pound per hour (lb/hr) emissions from each stack. Hourly 

emission rates are shown in Tables 1 and 2. 

3 
Proce.,o ilescription 

Northshore's No. 11 and No. 12 Pelletizers are second generation straight grate furnaces 

manufactured by Arthur G. McKee Company and were installed in 1962. Each furnace has four 

major operating zones referred to as the drying zone, pre-heat zone, firing zone and the 

cooling/recoup zone. 

Unfired green balls comprised of iron concentrate and bentonite enter the furnace at the drying zone. 

A layer of previously fired pellets is placed on the grate (hearth layer) and the green balls are then 

placed on the hearth layer at the furnace entrance. The green balls are then dried using heat recouped 

from the furnace. The air from the drying zone is directed to the Hood Exhaust. 

The dried pellets enter the firing zone where they are heated sufficiently to start an exothermic 

reaction caused by conversion of the magnetite to hematite. Natural gas burners are located in the 

firing zone for providing the necessary heat. The waste gas is exhausted from the firing zone. 

Once the exothermic reaction is started the pellets enter the cooling/recoup zone where the 

exothermic reaction of the pellets is completed and the reacted pellets are cooled before exiting the 

furnace. The hot exhaust from this zone is recouped for furnace operation and the excess enters the 

Hood Exhaust. 

Furnace 11 and 12 hood exhaust and waste gas streams are directed to wet wall electrostatic 

precipitators (WWESP) for emissions control. The waste gas is split evenly between two WWESPs 

(CE104, CE105 and CE114, CE115). The hood exhaust is directed to three parallel WWESPs 

(CE101-103 and CE111-113). 

Operating parameters of the Furnace 11 and Furnace 12 were recorded every hour for the duration of 

the tests and are located in Appendix E. 

4 
rnpling and AnIyL ocedures 

The testing was performed from ports meeting EPA Method 1 criteria. Test port location drawings 

are provided in Figures 1-2. 

Data from the continuous airflow monitors (acfm) was used with the saturated moisture content of 

the average stack temperature and the barometric pressure to determine the dscfm airflow rates. 

The oxygen and carbon dioxide concentrations of the stack gas were determined continuously at one 

of the Waste Gas stacks and oxygen was monitored continuously at the other Waste Gas stack to 

show that the emissions from each stack are similar to one another. Modified EPA Method 3A was 

used. Final oxygen and carbon dioxide results are not 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 251 ppm 

NO for the Waste Gas stacks. The MPCA agreed to accept data within 7.5 percent system bias 

error, but application of that allowance was not needed. System bias calibrations were performed 

prior to testing and at the completion of the testing at a minimum. Final NO xaverages are not bias 

corrected. 

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

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

certification analysis for NO R, oxygen and carbon dioxide are provided in Appendix D. 

A Campbell Scientific CR1000 with multiplex board data logger system was used to record the 

output signals from the stack thermocouple, NO R, oxygen, carbon dioxide concentrations and 

barometric pressure. The data logger was programmed to collect data every ten seconds and generate 

one-minute, 15-minute, and one-hour averages. The one-hour averages collected by the data logger 

were used unless the data for that hour was not valid, but there were three valid 15-minute readings. 

The average of the three valid fifteen minute readings is used to replace the invalid one-hour reading. 

5 
Tables 
Flags Hr # 

1 

2 

3 

4 

5 

6 

7 

9 

10 

11 

12 

13 

14 

15 

16 

17 

18 

19 

20 

21 

22 

23 

24 

25 

26 

27 

28 

29 

30 

31 

32 

Furnace 12 WG - 1204 

NOx, 

ppm 

Airflow, 

dscfm 

Emission 

Rate, lb/hr 

92.7 57,738 38.4 

94.5 53,707 36.4 

94.7 53,416 36.3 

94.4 53,283 36.0 

93.7 53,527 35.9 

93.3 53,102 35.5 

92.4 53,166 35.2 

93.5 53,288 35.7 

93.6 53,163 35.7 

93.1 53,420 35.6 

92.3 53,394 35.3 

92.3 53,304 35.3 

91.5 53,697 35.2 

91.0 53,708 35.0 

90.4 53,774 34.8 

90.4 53,504 34.7 

90.7 53,888 35.0 

90.6 54,069 35.1 

89.9 53,540 34.5 

90.4 54,471 35.3 

89.9 54,179 34.9 

87.2 54,821 34.3 

90.2 54,203 35.0 

92.1 53,870 35.6 

91.0 54,095 35.3 

89.3 53,715 34.4 

87.6 54,446 34.2 

87.9 54,381 34.3 

88.4 54,540 34.6 

87.5 54,283 34.0 

89.0 53,784 34.3 

88.4 53,650 34.0 

Furnace 12 WG - 1205 

NOx, 

ppm 

Airflow, 

dscfm ' 

Emission 

Rate, lb/hr 

92.9 54,950 36.6 

94.8 54,561 37.1 

94.9 54,338 37.0 

94.6 54,159 36.7 

93.8 54,212 36.4 

93.2 53,862 36.0 

92.9 53,973 35.9 

93.8 54,069 36.3 

93.8 54,053 36.3 

93.8 53,953 36.3 

92.7 54,043 35.9 

92.7 54,171 36.0 

92.4 54,398 36.0 

92.1 54,404 35.9 

90.8 54,171 35.2 

91.0 54,206 35.3 

91.4 54,513 35.7 

91.0 54,848 35.8 

90.3 54,183 35.1 

90.9 55,048 35.9 

90.5 55,011 35.7 

87.7 55,357 34.8 

90.8 54,962 35.8 

92.0 54,666 36.0 

91.3 54,624 35.7 

90.1 54,573 35.2 

88.5 54,876 34.8 

88.9 55,021 35.1 

89.3 55,196 35.3 

88.6 55,339 35.1 

89.8 54,424 35.0 

89.3 54,434 34.8 

Time 

Fired Pellets, 

LTPH 

Furnace Gas 

Use, MCFH 

7/29/09 10:00 244.1 139.8 

7/29/09 11:00 240.8 135.2 

7/29/09 12:00 240.0 135.2 

7/29/09 13:00 237.9 133.2 

7/29/09 14:00 236.5 133.3 

7/29/09 15:00 237.0 132.4. 

7/29/09 16:00 234.8 131.7 

7/29/09 17:00 242.7 133.0 

7/29/09 18:00 244.6 134.3 

7/29/09 19:00 246.2 133.3 

7/29/09 20:00 245.5 133.6 

7/29/09 21:00 245.8 133.7 

7/29/09 22:00 244.9 133.1 

7/29/09 23:00 244.6 133.4 

7/30/09 0:00 244.7 133.2 

7/30/09 1:00 245.0 133.7 

7/30/09 2:00 247.0 133.2 

7/30/09 3:00 250.4 133.1 

7/30/09 4:00 250.4 135.1 

7/30/09 5:00 250.8 134.8 

7/30/09 6:00 251.5 134.4 

7/30/09 7:00 255.0 134.8 

7/30/09 8:00 248.8 134.7 

7/30/09 9:00 249.4 135.3 

7/30/09 10:00 249.7 134.2 

7/30/09 11:00 249.2 133.7 

7/30/09 12:00 248.6 132.7 

7/30/09 13:00 249.2 133.4 

7/30/09 14:00 251.9 135.3 

7/30/09 15:00 252.6 135.3 

7/30/09 16:00 250.3 134.8 

7/30/09 17:00 247.6 134.7 

Barr Engineering Co. 

Test Dates: 7/29/09 to 7/30/09 

Northshore Mining Company 

Silver Bay, Minnesota 

TABLE 2 

Nitrogen Oxides (N0x) Emissions 

Indurating Furnace Line 12 

*The average 1-minute readings from 0:01 through 1:00 equals Flags 

the average 1-hr reading for 1:00 Calibration 
Figures 
71.5" 

ROOF LINE 

>14' 

4 TEST PORTS 

©90 

0 

--, 14' 

FURNACE 11 

1104 

1105 

TEST PORT LOCATION 

NORTHSHORE MINING 

SILVER BAY, MINNESOTA 

FURNACE 11 WASTE GAS 1104 & 1105 IDENTICAL 

(SV104) 8c (SV 105) 

NOT TO SCALE FIGURE 1 
Appendices 
Appendix A 

Report Calculations and Nomenclature 
Calculation Equations - EPA Methods 3A, 6C, 7E, 10, Modified 16A/16B 

System bias adjustment on source concentration indicated by the analyzer. 

C = A — C n ) cmA ppm _ co 

where: 

Cppm is the adjusted source concentration, ppm(dry) 

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

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

gas, ppm 

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

gas, ppm 

CrnA is the certified concentration of the upscale calibration gas, ppm 

convert source concentration into emission rate (1b/hr). 

C mg ) -= 

dscm 

MW X Cppm 

24.04 

E(Jb1hr) -4.242 X10 -8 )X C

f 

 X 60 X Q d 

(ccgM) 

where: 

C amount of compound, by weight(mg), per dry standard cubic meter of air 

t,riscm 

MW is the molecular weight of the gaseous compound 

where MW = 

64 SO2 

46 NO2 

28 CO 

34 TRS (Assume H2S Molecular Weight) 

24.04 is the molar volume of gas at 68 °F and 29.92 in Hg, Ug-mole 

E(lb/hr) emission rate of gaseous compound in pounds per hour 

6.242x I is the conversion factor from mg/m 3to lb/f 3 

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

60 is the conversion factor from minutes to hours 

WABusiness Units WM\Subunit AdminVrechnical & Support Services\A1R SAMPLING \ Templates\Reports\Equations analyzereq.doc 
Furnace 12 Stack Testing - 1204 1205 1204 1205 1204 1205 

Date Tonnage 

Combustion Zone , Temperature (F) Gas Flow 

'. (Mei') - Nox, ppm NOx, ppm 

Airflow, 

dsofm 

Airflow, 

clscfm 

Emission 

Rate, 16/hr 

Emission 

Rate, lb/hr 

Total 

Emission 

Rate,.lbitlr Flags, 

F12 WG 

FWA 

07/29/09 10:00 244 2301 140 

07/29/09 11:00 241 2299 135 

07/29109 12:00 240 2300 135 

07/29/09 13:00 238 2302 133 

07/29/09 14:00 237 2297 133 

07/29/09 15:00 237 2300 132 

07/29/09 16:00 235 2303 132 

07/29/09 17:00 243 2299 133 

07/29/09 18:00 245 2299 134 

07/29/09 19:00 246 2301 133 

07/29/09 20:00 246 2301 134 

07/29/09 21:00 246 2300 134 

07/29/0922:00 - 245 2301 133 

07/29/09 23:00 245 2301 133 

07/30/09 00:00 245 2301 133 

07/30/09 01:00 245 2301 134 

07/30/09 02:00 247 2302 133 

07/30/09 03:00 250 2304 133 

07/30/09 04:00 250 2297 135 

07/30/09 05:00 251 2299 135 

07/30/09 06:00 252 2300 134 

07/30/09 07:00 255 2303 135 

07/30/09 08:00 249 2302 135 

07/30/09 09:00 249 2301 135 

07/30/09 10:00 250 2296 134 

07/30/09 11:00 249 2295 134 

07/30/09 12:00 249 2298 133 

07/30/09 13:00 249 2297 133 

07/30/09 14:00 252 2301 135 

07/30/09 15:00 253 2299 135 

07/30/09 16:00 250 2299 135 

07/30/09 17:00 248 2301 135 

93 93 57,738 54,950 38.4 36.6 74.9 93 

95 

95 

95 

94 

93 

93 

94 

94 

93 

93 

93 

92 

92 

91 

91 

91 

91 

90 

91 

90 

87 

91 

92 

91 

90 

88 

88 

89 

88 

89 

89 

95 95 53,707 54,561 36.4 37.1 73.4 

95 95 53,416 54,338 .36.3 37.0 73.2 

94 95 53,283 54,159 36.0 36.7 72.8 

94 94 53,527 54,212 35.9 36.4 72.4 

93 93 53,102 53,862 35.5 36.0 71.5 

92 93 53,166 53,973 35.2 35.9 71.1 

94 94 53,288 54,069 35.7 36.3 72.1 

94 94 53,163 54,053 35.7 36.3 72.0 

93 94 53,420 53,953 35.6 36.3 71.9 

92 93 53,394 54,043 35.3 35.9 71.2 

92 93 53,304 54,171 35.3 36.0 71.2 

92 92 53,697 54,398 35.2 36.0 71.2 

91 92 53,708 54,404 35.0 35.9 70.9 

90 91 53,774 54,171 34.8 35.2 70.1 

90 91 53,504 54,206 34.7 35.3 70.0 

91 91 53,888 54,513 35.0 35.7 70.7 

91 91 54,069 54,848 35.1 35.8 70.9 

90 90 53,540 54,183 34.5 35.1 69.6 

90 91 54,471 55,048 35.3 35.9 71.1 

90 91 54,179 55,011 34.9 35.7 70.6 

87 88 54,821 55,357 34.3 34.8 69.0 

90 91 54203 54,962 35.0 35.8 70.8 

92 92 53,870 54,666 35.6 36.0 71.6 

91 91 54,095 54,624 35.3 35.7 71.0 

89 90 53,715 54,573 34.4 35.2 69.6 

88 89 54,446 54,876 34.2 34.8 69.0 

88 89 54,381 55,021 34.3 35.1 69.3 

88 89 54,540 55,196 34.6 35.3 69.9 

88 89 54,283 55,339 34.0 35.1 69.2 

89 90 53,784 54,424 34.3 35.0 69.3 

88 89 53,650 54,434 34.0 34.8 68.8 

RVI 

Ov
Furnace 11 Stack Testing 1104 , 1105 .. 1104- 1105 1104 ' 1105 

Date Tonnage 

Combustion Zone 

Temperature (F) 

Gas Flow 

(mcfi) 

NOx, 

ppm 

.NOX, 

- p,pm 

Air-flow, 

dscfm 

Airflow, 

dscfrn 

Emission 

Rate, lb/hr 

Emission' 

Rate, Ibfir; 

:TOW 

Ethisslon 

, Rate, lb/hr Flags 

F11 WG 

FWA 

07/27/09 19:00 

07/27/09 20:00 

07/27/09 21:00 

07/27/09 22:00 

07/27/09 23:00 

07/28/09 00:00 

07/28/09 01:00 

07/28109 02:00 

1 -.07/28/09,9300 

07/28/09 04:00 

07/28/09 05:00 

07/28/09 06:00 

07/28/09 07:00 

07/28/09 08:00 

07/28/09 09:00 

07/28/09 10:00 

07/28/09 11:00 

07/28/09 12:00 

07/28/09 13:00 

07/28/09 14:00 

07/28/09 15:00 

07/28/09 16:00 

07/28/09 17:00 

07/28/09 18:00 

07/28/09 19:00 

07/28/09 20:00 

07/28/09 21:00 

07/28/09 22:00 

07/28/09 23:00 

07/29/09 00:00 

07/29/09 01:00 

07/29/09 02:00 

07/29/09 03:00 

07/29/09 04:00 

07/29/09 05:00 

07/29/09 06:00 

252 2322 142 

249 2325 142 

249 2329 141 

249 2322 141 

251 2322 140 

250 2322 141 

250 2322 142 

250 2325 141 

98 97 50,942 56,921 35.9 39.6 75.5 C 98 

98 

98 

100 

101 

102 

102 

99 

99 97 50,886 56,925 36.1 39.7 75.9 

99 98 51,500 57,276 36.6 40.0 76.7 

101 99 52,986 57,363 38.3 40.5 78.8 

102 100 53,750 57,665 39.4 41.3 80.6 

104 101 53,974 57,898 40.1 42.1 82.1 

103 101 53,821 57,966 39.8 42.0 81.8 

101 98 53,768 57,874 38.8 40.8 79.5 

'207 2145 115 See Below -

251 2326 137 

249 2328 139 

246 2324 139 

251 2326 143 

242 2326 141 

250 2325 142 

247 2327 141 

246 2327 143 

242 2327 144 

235 2328 142 

249 2323 142 

251 2327 142 

251 2328 143 

248 2329 143 

253 2326 143 

251 2328 143 

250 2327 139 

250 2324 135 

249 2320 135 

247 2324 140 

249 2326 139 

249 2322 137 

249 2322 135 

249 2326 134 

249 2327 134 

249 2327 135 

252 2325 137 

95 93 54,238 58,410 36.9 38.8 75.8 94 

96 

95 

97 

C 97 

99 

103 

99 

99 

97 

98 

95 

93 

93 

95 

97 

96 

95 

99 

101 

99 

102 

106 

105 

103 

104 

98 

97 95 53,112 57,043 36.9 38.6 75.5 

96 94 53,965 58,119 37.2 39.1 76.4 

98 96 53,088 57,302 37.3 39.5 76.8 

98 97 52,974 57,569 37.3 39.8 772 

100 99 53,318 57,569 38.1 40.9 79.0 

103 102 53,283 57,490 39.4 42.1 81.4 

100 99 52,971 57,159 37.9 40.4 78.3 

100 99 51,229 56,829 36.6 40.2 76.8 

98 97 48,708 54,629 34.3 37.9 72.2 

99 98 51,058 57,166 36.2 40.0 76.2 

96 95 51,956 57,501 35.7 39.1 74.8 

93 92 51,882 57,690 34.7 38.0 72.7 

94 93 52,738 57,690 35.5 38.4 73.9 

96 95 52,260 57,729 35.9 39.1 75.0 

98 97 52,021 57,230 36.6 39.7 76.3 

97 95 52,788 57,001 36.5 39.0 75.5 

96 95 52,165 56,687 35.9 38.4 74.3 

99 98 51,698 57,017 36.8 40.1 76.9 

102 100 50,859 57,419 37.0 41.1 78.1 

100 99 51,759 57,717 37.1 40.9 78.0 

103 102 52,251 58,010 38.5 42.3 80.9 

107 106 52,435 57,991 40.2 43.9 84.1 

105 104 52,189 58,056 39.4 43.4 82.8 

104 103 52,877 58,408 39.4 43.0 82.4 

104 103 53,827 58,431 40.2 43.1 83.3 

98 97 54,627 58,997 38.5 41.2 79.7 

This datapoint is excluded from the analysis because the furnace was offline for -30 minutes during the hour to address an overload of the 124A conveyor. 

1: 07/28/0903:00 , 207 2145 115 77 75 1 53,157 I 57,944 .1 29.0 •1 , ..31.0 .1 - ,60.0 761 

RV

O
Appendix B 

Instrument Output 
Source 

1205 WG SV115) 

NOx, 

PPm(drY) 

20.1 

92.9 

94.8 

94.9 

94.6 

93.8 

932 

92.9 

93.8 

93.8 

93.8 

92.7 

92.7 

92.4 

92.1 

90.8 

91.0 

91.4 

91.0 

90.3 

90.9 

90.5 

87.7 

90.8 

92.0 

91.3 

90.1 

88.5 

88.9 

89.3 

88.6 

89.8 

89.3 

Moisture 

Content, 

32 

20.2 

20.4 

20.4 

20.6 

20.5 

20.7 

20.6 

20.7 

20.7 

20.7 

20.5 

20.6 

20.5 

20.4 

20.6 

20.6 

20.7 

20.8 

20.5 

20.4 

20.5 

20.3 

20.4 

20.5 

20.5 

20.6 

20.5 

20.6 

20.6 

20.4 

20.5 

20.7 

Airflow 

Rate, 

dscfm 

75,103 

54,950 

54,561 

54,338 

54,159 

54,212 

53,862 

53,973 

54,069 

54,053 

53,953 

54,043 

54,171 

54,398 

54,404 

54,171 

54,206 

54,513 

54,848 

54,183 

55,048 

55,011 

55,357 

54,962 

54,666 

54,624 

54.573 

54,876 

55,021 

55,196 

55,339 

54,424 

54,434 

Em

Rat

NOTES Flags 

Start Test at 0900 

Analyzer Data and Calculations 

Time Stamp 

7/29/2009 9:00 

Barometric 

Pressure, 

in. Hg 

29.03 

Fired 

Pellets, 

LTPH 

Furnace 

Gas Use, 

MCFH 

7/2912009 10:00 29.03 244.1 139.8 

7/29/2009 11:00 29.03 240.8 135.2 

7/29/2009 12:00 29.03 240.0 135.2 

7/292009 13:00 29.02 237.9 1332 

7/2912009 14:00 29.03 236.5 133.3 

7/29/2009 15:00 29.03 237.0 132.4 

7129/2009 16:00 29.03 234.8 131.7 

7129/2009 17:00 29.03 242.7 133.0 

7/29/2009 18:00 29.02 244.6 134.3 

7/2912009 19:00 29.02 246.2 133.3 

7/29/2009 20:00 29.02 245.5 133.6 

7/29/2009 21:00 29.02 245.8 133.7 

7129/200933:00 29.03 244.9 133.1 

7/29/2009 23:00 29.04 244.6 133.4 

7/30/2009 0:00 29.03 244.7 133.2 

7/30/2009 1:00 29.02 245.0 133.7 

7/30/2009 2:00 29.02 247.0 133.2 

7/30/2009 3:00 29.01 250.4 133.1 

7/30/2009 4:00 29.01 250.4 135.1 

7130120095:00 29.01 250.8 134.8 

7/30120096:00 29.00 251.5 134.4 

7/30/2009 7:00 29.00 255.0 134.8 

7/30/2009 8:00 29.01 248.8 134.7 

7/30/2009 9:00 29.02 249.4 135.3 

7/30/2009 10:00 29.02 249.7 134.2 

7/30/2009 11:00 29.02 249.2 133.7 

7/30/2009 12:00 29.01 248.6 132.7 

7/30/2009 13:00 29.00 2492 133.4 

7/30/2009 14:00 29.01 251.9 135.3 

7/30/2009 15:00 29.03 252.6 135.3 

7/30/2009 16:00 29.02 250.3 134.8 

7/30/2009 17:00 29.01 247.6 134.7 

Furnace 12 VVG -1205 (SV115) Furnace 12 WG -1204 (SV114) 

Airflow 

(CEMS 

Data), Stack 

NOR, 02, ACFM Temp., 

ppm % x1,000 °F 

NO„, 

ppm 

Airflow 

(CEMS 

Data), 

02, CO, ACFM 

% % x1,000 

Stack 

Temp., 

°F 

20.1 15.7 81.22 76.3 17.0 16.0 1.8 79.61 83.1 

92.9 16.9 80.51 139.0 92.7 16.8 2.0 79.20 130.2 

94.8 17.0 80.20 139.4 94.5 17.0 1.9 78.95 139.4 

94.9 17.0 79.81 139.3 94.7 16.9 1.8 78.52 139.4 

94.6 17.0 79.85 139.7 94.4 17.0 1.8 78.55 139.7 

93.8 17.0 79.82 139.6 93.7 17.0 1.8 78.88 139.7 

93.2 16.9 79.51 139.9 93.3 17.0 1.8 78.32 139.8 

92.9 17.0 79.54 139.7 92.4 17.0 1.8 78.35 139.7 

93.8 16.9 79.81 139.9 93.5 17.0 1.8 78.59 139.8 

93.8 17.0 79.89 140.0 93.6 17.0 1.8 78.64 140.1 

93.8 17.0 79.74 140.0 93.1 16.9 1.8 78.89 139.9 

92.7 17.0 79.54 139.5 92.3 17.0 1.8 78.65 139.6 

92.7 17.0 79.93 139.8 92.3 17.0 1.8 78.72 139.9 

92.4 17.0 80.03 139.5 91.5 17.0 1.8 79.06 139.6 

92.1 17.0 80.00 139.5 91.0 16.9 1.8 79.05 139.6 

90.8 17.0 79.83 139.7 90.4 17.0 1.8 79.31 139.8 

91.0 17.0 79.91 139.7 90.4 17.0 1.8 78.95 139.8 

91.4 17.0 80.50 139.9 90.7 17.0 1.8 79.65 140.0 

91.0 17.0 81.17 140.1 90.6 17.0 1.8 80.08 140.2 

90.3 17.1 79.85 139.6 89.9 17.0 1.8 78.97 139.7 

90.9 17.1 80.99 139.4 90.4 17.0 1.8 80.14 139.4 

90.5 17.1 81.04 139.5 89.9 17.0 1.7 79.88 139.6 

87.7 17.1 81.28 139.1 87.2 17.0 1.7 80.55 139.2 

90.8 17.1 80.86 139.4 90.2 17.0 1.8 79.81 139.5 

92.0 16.9 80.52 139.6 92.1 16.9 1.8 79.42 139.7 

91.3 17.0 80.40 139.5 91.0 17.0 1.8 79.62 139.5 

90.1 17.0 80.46 139.7 89.3 17.0 1.8 79.26 139.8 

88.5 17.1 8037 139.6 87.6 17.0 1.8 80.30 139.7 

88.9 17.1 81.25 139.8 87.9 17.0 1.8 80.38 139.9 

89.3 17.1 81.41 139.7 88.4 17.0 1.8 80.51 139.8 

88.6 17.1 81.34 139.4 87.5 17.0 1.8 79.86 139.5 

89.8 17.0 80.17 139.6 89.0 17.0 1.8 7929 139.7 

89.3 17.0 80.42 139.9 88.4 16.9 1.8 79.33 140.0 

Furnace 12 
Appendix C 

Calibration Data 
Analyzer Calibrations 

Furnace 11 WG - 1105 (SV105) 

NO, 02, 

PPm 

96 16.7 

97 16.7 

97 16.7 

98 16.7 

99 16.7 

99 16.8 

99 16.8 

98 16.8 

97 16.8 

97 16.8 

97 16.8 

97 16.8 

98 16.8 

98 16.8 

96 16.1 

19 9.1 

NO„ 

PPm 

1 

Furnace 11 WG - 1104 SV104) 

CO2 , 

9 0 

9.0 

3.2 

0.2 

0,1 

0.3 

1.9 

1.9 

1.9 

1.9 

1.9 

1.9 

1.9 

1.9 

5.1 

8.6 

8.9 

9:0 

6.0 

0.1 

0.0 

Time Stamp 

7/27/2009 18:02 

7/27/2009 18:03 

7/27/2009 18:04 

7/27/2009 18:05 

7/27/2009 18:06 

7/27/2009 18:07 

7/27/2009 18:08 

7/27/2009 18:09 

7/27/2009 18:10 

7/27/2009 18:11 

7/27/2009 18:12 

7/27/2009 18:13 

7/27/2009 18:14 

7/27/2009 18:15 

7/28/2009 7:31 

7/28/2009 7:32 

7/28/2009 7:33 

7/28/2009 7:34 

7/28/2009 7:35 

7/28/2009 7:36 52 

7/28/2009 7:37 109 

7/28/2009 7:38 110 

7/28/20097:39[ 111 

7/28/2009 7:40 113 

7/28/2009 7:41 104 

7/28/2009 7:42 98 

7/28/2009 7:43 98 

7/28/2009 7:44 98 

7/28/2009 7:45 99 

7/29/2009 6:01 95 

7/29/2009 6:02 95 

7/29/2009 6:03 94 

7/29/2009 6:04 94 

7/29/2009 6:05 93 

7/29/2009 6:06 94 

7/29/2009 6:07 94 

7/29/2009 6:08 94 

7/29/2009 6:09 89 

7/29/20096:10 111 

7/29/20096:11 111 

7/29/20096:12 111 

7/29/2009 6:13 111 

7/29/2009 6:14 

7/29/2009 6:15 

7/29/2009 6:16 

7/29/20096:17 

02, 

8 9 

8 9 

3.1 

0,0 

P : 9 

1.5 

16.5 

16.7 

16.7 

16.7 

16.7 

16.7 

16.7 

16.8 

12.2 

8.8 

8.9 

8:9 

6.1 

0.0 

0.0 

54 

114 

115 

115 

103 

98 

98 

98 

98 

99 

99 

99 

60 

2 

2 Calibration 

16.9 95 

16.9 95 

16.9 95 

16.9 94 

16.9 95 

16.9 96 

16.9 95 

16.9 93 

7.0 94 

0.2 113 

0.1 113 

0.1 113 

107 

3 

5 

2 

19 : 0 16 

1.2 111 

0.1 112 

0.1 L 113 

0,0 113 

0.3 110 

15.9 99 

16.6 98 

16.7 98 

16.7 99 

16.7 99 

1.7 

1.7 

1.7 

1.7 

1.7 

1.7 

1.7 

1.5 

-0.1 

-0.1 

T0,1 

-LZ 1 -0.1 

2.1 2.4 

8.9 8.9 

7.4 7.5 

8.9 9.1 

-0.1 

7.8 

16.9 

16.9 

16.8 

16.8 

16.8 

17.1 

17.1 

17.1 

17.1 

17.1 

17.0 

16.9 

16.6 

0.2 

-0.1 

- 0.1 

0.0 

0.9 

1.8 

1.8 

1.8 

1.8 

1.8 

Final Cals 

Furnace 11 
BARR 

Northshore Mining Company 

Furnace 11 

7/27-7/29/09 

M. Petersen 

Analyzer Make & Model 

Analyzer Serial Number: 

Analyzer Range (span) 

ANALYZER CALIBRATION DATA 

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

MODIFIED EPA METHOD 7E 

ANALYZER CALIBRATION 

Cylinder 

Serial No. Certified Value 

Zero Gas CC47638 (N2) 0 

Mid-range CC74072 117 

High-range CC78164 251 

NO2 CC101276 43,2 

Project 

Sample Loc. 

Date 

Operators 

API Model 200EH 

218 

251 ppm 

(1105 Waste Gas Stack) 

Cal Date: 7/27/2009 

Zero Gas 

Cylinder 

Value 

Analyzer 

Calibration 

• Response 

Absolute 

Difference 

Difference, 

% of Span 

0:0; 0.0 0.0 0:00°4r-. 

Mid rage 1170 116.0 1 0: 0.40%! 

High range 251 0 251.0 00 _ 0:00%.. 

NO2 to NOx Mode 43.2 40.5 Cony. Eff. 93..8io'' 

SYSTEM CALIBRATION BIAS AND DRIFT DATA: 

Note: System Cal bias cannot exceed +/- 5 percent of span. Drift cannot exceed +/- 3 percent of span 

Cal Values 

Response 

Time (sec) 

Analyzer Cal 

Response, 

PPM 

System Cal 

Response, 

PPM 

System Cal 

Cal. Bias 

% of Span 

Cal Date: 7/27/2009 Cal. Time: 1709-1815 

Zero Gas 47 0 1 040% : 

Upscale Gas 50 116 113 .20% 

Cal Date: 7/28/2009 Cal. Time: 0730-0745 

Zero Gas 0 1 0.40% 

Upscale Gas 116 . 111 

Cal Date: 7/29/2009 Cal. Time: 0600-0617 

Zero Gas 0 1 0.40% . 

Upscale Gas ..........:1.l e . : : 111 74.69% 

System Calibration Bias = [(System Cal. Response - Analyzer Cal.Response) pan] x 

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

Project Northshore Mining Company 

Sample Loc. Furnace 11 

Date 7/27-7/29/09 

Operators M. Petersen 

Analyzer Make & Model API Model 200EH 

Analyzer Serial Number: 218 

Analyzer Range (span) 21 

ANALYZER CALIBRATION DATA , 

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

MODIFIED EPA METHOD 3A 

ANALYZER CALIBRATION 

(Oxygen) 

Cylinder 

Serial No, Certified Value 

Zero Gas CC47638 (N2) 0.0 

Mid-range CC28340 9.0 

High-range CC60429 21.0 

(1105 Waste Gas Stack) 

Cal Date: 7/27/2009 

Zero Gas 

Cylinder 

Value 

Analyzer 

Calibration 

Response 

Absolute 

Difference 

Difference, 

% of Span 

0.0 0.0 : 0.00% 

Mid-rage 9.0 9.0 0 0.00% 

High-range: - 21,0 21.0 0.0 0.00% 

SYSTEM CALIBRATION BIAS AND DRIFT DATA: 

Note: System Cal bias cannot exceed +/- 5 percent of span. Drift cannot exceed +/- 3 percent of span 

Cal Values 

Response 

Time (sec) 

Analyzer Cal 

Response, 

PPM 

System Cal 

Response, 

PPM 

System Cal 

Cal. Bias 

% of Span 

Cal Date: 7/27/2009 Cal. Time: 1709-1815 

Zero Gas 28 0.0 0.1 148% 

Upscale Gas 29 9.0 9.0 

Cal Date: 7/28/2009 Cal. Time: 0730-0745 

Zero Gas .0.0 0.0 : 0.00% 

Upscale Gas •0 9.0 ;:.0.00% 

Cal Date: 7/29/2009 Cal. Time: 0600-0617 

Zero Gas 0 0.0 0.00%_ 

Upscale Gas 9 0 8.9 -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 02 
Analyzer Make & Model API Model 200EH 

Analyzer Serial Number: 484 

Analyzer Range (span) 251 ppm 

BARR 

Project Northshore Mining Company 

Sample Loc. Furnace 11 

Date 7/27-7/29/09 

Operators M. Petersen 

(1104 Waste Gas Stack) 

MODIFIED EPA METHOD 7E 

ANALYZER CALIBRATION 

Cylinder 

Serial No. Certified Value 

Zero Gas CC47638 (N2) 0 

Mid-range CC74072 117 

High-range CC78164 251 

NO2 CC101276 43.2 

ANALYZER CALIBRATION DATA 

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

Cal Date: 7/27/2009 

Zero Gas 

Cylinder 

Value 

Analyzer 

Calibration 

Response 

Absolute 

Difference 

Difference, 

% of Span 

0 0 1.0 1 0 0.40% 

Mid rage -.0 117 116.0 1 0 040% ' 

High range 21.0 . 251.0 0.0- 0;00%;_ 

NO2 to NOx Mode 43.2 .: 41.8 Cony. Eff. 96.8%,,3 , 

SYSTEM CALIBRATION BIAS AND DRIFT DATA: 

Note: System Cal bias cannot exceed +/- 5 percent of span. Drift cannot exceed +/- 3 percent of span 

Cal Values 

Response 

Time (sec) 

Analyzer Cal 

Response, 

PPM 

System Cal 

Response, 

PPM 

System Cal 

Cal. Bias 

% of Span 

Cal Date: 7/27/2009 Cal. Time: 1709-1815 

Zero Gas 48 1 1 000% 

Upscale Gas 49 116 115 

Cal Date: 7/28/2009 Cal. Time: 0730-0745 

Zero Gas 1 0,00% 

Upscale Gas :116::.; 1.20%, 

Cal Date: 7/29/2009 Cal. Time: 0600-0617 

Zero Gas , 1 0.00% 

Upscale Gas : - 116'. 113 -1,20% - 

Drift = [(Final System Cal. Response - Initial System Cal Response) / Span] x 100 NOx 
Imi■Emo 

Northshore Mining Company 

Furnace 11 

BARR 

Project 

Sample Loc. 

Date 

Operators 

Analyzer Make & Model 

Analyzer Serial Number: 

Analyzer Range (span) 

MODIFIED EPA METHOD 3A 

ANALYZER CALIBRATION 

(Carbon Dioxide) 

(1104 Waste Gas Stack) 

Cylinder 

Serial No. Certified Value 

Zero Gas CC47638 (N2) 0.0 

Mid-range CC60429 5.0 

High-range CC28340 , 9.0 

7/27-7/29/09 

M. Petersen 

Cal, Anal. Model 200 

1N07006 

9.0 

ANALYZER CALIBRATION DATA 

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

Cal Date: 7/27/2009 

Zero Gas 

Cylinder 

Value 

Analyzer 

Calibration 

Response 

Absolute 

Difference 

Difference, 

% of Span 

0 0 0.0 0.0'• 0.00%'v:,:'. 

Mid rage 5 0 5.0 0 0 0.00%' , 

High-range: 9:01 1 9.0 0 0.00%. 

SYSTEM CALIBRATION BIAS AND DRIFT DATA: 

Note: System Cal bias cannot exceed +/- 5 percent of span. Drift cannot exceed +/- 3 percent of span 

Cal Values 

Response 

Time (sec) 

Analyzer Cal 

Response, 

PPM 

System Cal 

Response, 

PPM 

System Cal 

Cal. Bias 

% of Span 

Cal Date: 7/27/2009 Cal. Time: 1709-1815 

Zero Gas 27 0.0 0.1 

Upscale Gas 27 9.0 9.0 

Cal Date: 7/28/2009 Cal, Time: 0730-0745 

Zero Gas 0.0 0.00% 

Upscale Gas :9.0 9.0 . 0.00% - 

Cal Date: 7/29/2009 Cal. Time: 0600-0617 

Zero Gas -0.1 

Upscale Gas 9.0' - 9.1 

Drift = [(Final System Cal. Response - Initial System Cal Response) / Span] x 100 CO2 
MODIFIED EPA METHOD 3A 

ANALYZER CALIBRATION 

(Oxygen) 

(1104 Waste Gas Stack) 

Cylinder 

Serial No. Certified Value 

Zero Gas CC47638 (N2) 0.0 

Mid-range CC28340 9.0 

High-range CC60429 21.0 

Analyzer Make & Model 

Analyzer Serial Number: 

Analyzer Range (span) 

Cal. Anal. Model 200 

1N07006 

21 

BARR 

Project 

Sample Loc. 

Date 

Operators 

Northshore Mining Company 

Furnace 11 

7/27-7/29/09 

M. Petersen 

ANALYZER CALIBRATION DATA 

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

Cal Date: 7/27/2009 

Zero Gas 

Cylinder 

Value 

Analyzer 

Calibration 

Response 

Absolute 

Difference 

Difference, 

% of Span 

,,. 0.0 0.0 0. 0 00%; 

Mid-rage 9.0 . 0.00%. 

High-range: 21.0 .- 21.0 0.0 0.00%.. 

, 

SYSTEM CALIBRATION BIAS AND DRIFT DATA: 

Note: System Cal bias cannot exceed +/- 5 percent of span. Drift cannot exceed +/- 3 percent of span 

Cal Values 

Response 

Time (sec) 

Analyzer Cal 

Response, 

PPM 

System Cal 

Response, 

PPM 

System Cal 

Cal. Bias 

% of Span 

Cal Date: 7/27/2009 Cal. Time: 1709-1815 

Zero Gas 30 0.0 0.0 . 0.00% 

Upscale Gas 30 9.0 8.9 :1.:-O48% fl 

Cal Date: 7/28/2009 Cal. Time: 0730-0745 

Zero Gas 001 0.0 6.60-W 

Upscale Gas 8.9 -0.48% 

Cal Date: 7/29/2009 Cal. Time: 0600-0617 

Zero Gas 0.0 -0.1 -0.48% 

Upscale Gas o.a 8.9 

_. 

.' 448%_::-. 

Drift = [(Final System Cal. Response - Initial System Cal Response) / Span] x 100 02 
6.6 

0.0 

0.0 

0.0 

0.0 

0.0 

0.0 

0.0 

0.0 

0.0 

0.0 

16.1 

20.9 

15.6 

9.0 

9.0 

15.2 

20.6 

20.6 

20.6 

20.6 

20.6 

20.6 

20.6 

20.7 

20.7 

20.7 

20.7 

20.7 

20.7 

20.7 

20.7 

20.7 

20.7 

20.7 

20.7 

20.7 

20.7 

20.7 

20.8 

20.7 

20.7 

20.7 

20.7 

18.6 

18.9 

16.8 

56 

240 

243 

252 

195 

118 

79 

41 

42 

42,2 

12 

1 

1 

1 

1 

1 

1 

1 

Analyzer Calibrations 

Furnace 12 WG - 1205 (SV115) Furnace 12 WG -1204 (SV114) 

NO„, 02, NO,, 02, 002 , 

Time Stamp ppm % PPm VD 9/0 

1.8 

0.0 

-0.1 

7/29/2009 7:46 0 

7/29/2009 7:47 0 

7/29/2009 7:48 

7/29/2009 7:49 IL 0 

7/29/2009 7:50 

7/29/2009 7:51 223 

7/29/2009 7:52 240 

7/29/2009 7:53[ 252 

7/29/2009 7:54 220 

7/29/20097:55 119 

7/29/2009 7:56F 118 

7/29/2009 7:57 88 

7/29/20097:58 40 

7/29/2009 7:59 41 

7/29/2009 8:00i 41 7 

7/29/2009 8:01 21 

7/29/2009 8:02 0 

7/29/2009 8:03 0 

7/29/2009 8:04 0 

7/29/2009 8:05 0 

7/29/2009 8:06 0 

7/29/2009 8:07 0 

7/29/2009 8:08 0 

7/29/2009 8:09 0 

7/29/2009 8:10 0 

7/29/2009 8:11 0 

7/29/2009 8:12 0 

7/29/2009 8:13 0 

7/29/2009 8:14 0 

7/29/2009 8:15 0 

7/29/2009 8:16 0 

7/29/2009 8:17 0 

7/29/2009 8:18 0 

7/29/2009 8:19 0 

7/29/2009 8:20 0 

7/29/2009 8:21 0 

7/29/2009 8:22 0 

7/29/2009 8:23 0 

7/29/2009 8:24 0 

7/29/2009 8:25 0 

7/29/2009 8:26 0 

7/29/2009 8:27 0 

7/29/2009 8:28 0 

7/29/2009 8:29 0 

7/29/2009 8:30 0 

7/29/2009 8:31 0 

7/29/2009 8:32 0 

7/29/2009 8:33 0 

7/29/2009 8:34 0 

7/29/2009 8:35 19 

7/29/2009 8:36 46 

7/29/2009 8:37 3 

0.1 0.0 

0.0 0.0 

0.0 0.0 

0.0 

0.0 0.0 

0.0 0.0 

0.0 0.0 

0.0 0.0 

0.0 0.0 

0.0 0.0 

0.0 0.0 

0.0 0.0 

0.0 0.0 

0.0 0.0 

20.0 5.2 

21.3 5.1 

21.0 5.0 

13.7 

9.0 9.1 

9.0 9.1 

17.1 2.5 

20.5 0.3 

2 20.5 0.3 

3 20.5 0.3 

2 20.5 0.3 

2 20.5 0.3 

3 20.5 0.3 

3 20.5 0.3 

3 20.6 0.3 

2 20.6 0.3 

2 20.6 0.3 

2 20.6 0.3 

3 20.6 0,3 

2 20.6 0.2 

3 20.6 0.2 

2 20.6 0.2 

2 20.6 0.2 

3 20.6 0.2 

2 20.6 0.2 

3 20.6 0.2 

2 20.6 0.2 

3 20.6 0.2 

3 20.6 0.2 

3 20.7 0.2 

3 20.6 0.2 

3 20.6 0.2 

3 20.6 0.2 

2 20.6 0.2 

6 20.3 0.2 

4 20.6 0.2 

3 3.8 0.3 

'Analyzer Cal 

Furnace 12 
Analyzer Calibrations 

Furnace 12 WG - 1205 (SV115) Furnace 12 WG - 1204 (SV114) 

NO„ 02, NO, 02, CO2, 

Time Stamp ppm % PPm % % 

2 0.3 

2 0.2 

1 0.1 

1 0.1 

78 0.1 

115 0.1 

115 0.1 

2 

1 

1 

45 

114 

115 

1 

10 

80 

84 

84 

83 

83 

84 

86 

85 

78 

109 

115 

115 

105 2.4 34 

8 8.8 1 

8.9 1 

0H 1 

9.0 1 

10.3 2 

20.6 3 

19.6 4 

16.8 5 

16.7 5 

16.7 52 

16.8 82 

16.8 83 

16.8 86 

16.8 85 

16.9 85 

10.4 91 

0.2 114 

7/29/2009 8:38 

7/29/2009 8:39 

7/29/2009 8:40 

7/29/2009 8:41 

7/29/2009 8:42 

7/29/2009 8:43 

7/29/2009 8:44 

7/29/2009 8:45 

7/29/2009 8:46 

7/29/2009 8:47 

7/29/2009 8:48 

7/29/2009 8:49 

7/29/2009 8:50 

7/29/2009 8:51 

7/29/2009 8:52 

7/29/2009 8:53 

7/29/2009 8:54 

7/29/2009 8:55 

7/29/2009 8:56 

7/29/2009 8:57 

7/29/2009 8:58 

7/29/2009 8:59 

7/29/2009 9:00 

7/30/2009 17:01 

7/30/2009 17:02 

7/30/2009 17:03 

7/30/2009 17:04 

7/30/2009 17:05 

7/30/2009 17:06 

7/30/2009 17:07[ 

0.1 

0.1 

0.0 

0.5 

0.0 

0. 

0.1 

0.0 

0.1 

0.0 

0.0 

0,2 

8.3 

'System Bias 

0.0 

8.7 

8.. 9__-_ a:.61 „ . 

8.9 9.0 

8.9 9.0 

8.9 9.1 

18.3 1.9 

20.7 0.3 

20.6 0.3 

20.5 0.3 

20.6 0.3 

17.1 2.0 

16.8 2.0 

16.8 2.0 

16.9 2.0 

16.9 1.9 

16.9 1.9 

4.3 0.2 

0.0 0.1 

0.1 115 0 0 Final Cals 

0 1 0 - 0 

5.0 33 8.0 8,5 

8.9 1 8,9 8.8 

9.0 89 

.. 

Furnace 12 
Project 

Sample Loc. 

Date 

Operators 

Northshore Mining Company 

Furnace 12 

7/29-7/30/09 

M. Petersen 

Analyzer Make & Model 

Analyzer Serial Number: 

Analyzer Range (span) 

API Model 200EH 

218 

251 ppm 

ANALYZER CALIBRATION DATA 

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

MODIFIED EPA METHOD 7E 

ANALYZER CALIBRATION 

BARR 

(1205 Waste Gas Stack) 

Cylinder 

Serial No. Certified Value 

Zero Gas CC47638 (N2) 0 

Mid-range CC74072 117 

High-range CC78164 251 

NO2 CC101276 43.2 

Cal Date: 7/29/2009 

Zero Gas 

Cylinder 

Value 

Analyzer 

Calibration 

Response 

Absolute 

Difference 

Difference, 

% of Span 

0 o 00 000% 

Mid-rage :117 118 1 0.-40c/0 

High range -251 252 10 .- .0.40% 

NO2 to NOx Mode -43.2 41.7 Cony. Eff. :,,96.5% 

SYSTEM CALIBRATION BIAS AND DRIFT DATA: 

Note: System Cal bias cannot exceed +/- 5 percent of span. Drift cannot exceed +/- 3 percent of span 

Cal Values 

Response 

Time (sec) 

Analyzer Cal 

Response, 

PPM 

System Cal 

Response, 

PPM 

System Cal 

Cal. Bias 

% of Span 

Cal Date: 7/29/2009 Cal. Time: 0749-0900 

Zero Gas 47 0 1 0.40% - 

Upscale Gas 50 118 115 -1.20% 

Cal Date: 7/30/2009 Cal. Time: 1700-1707 

Zero Gas 0 1 Q.417/ 

Upscale Gas : ,118 115 71.20% 

System Calibration Bias = [(System Cal. Response - Analyzer Cal. Response) / Spani x 

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

lommimn 

Project Northshore Mining Company 

Sample Loc. Furnace 12 

Date 7/29-7/30/09 

Operators M. Petersen 

Analyzer Make & Model API Model 200EH 

Analyzer Serial Number: 218 

Analyzer Range (span) 21 

MODIFIED EPA METHOD 3A 

ANALYZER CALIBRATION 

(Oxygen) 

Cylinder 

Serial No. Certified Value 

Zero Gas CC47638 (N2) 0.0 

Mid-range CC28340 9.0 

High-range CC60429 21.0 

(1205 Waste Gas Stack) 

ANALYZER CALIBRATION DATA 

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

Cal Date: 7/29/2009 

Zero Gas 

Cylinder 

Value 

Analyzer 

Calibration 

Response 

Absolute 

Difference 

Difference, 

% of Span 

00- 0.0 0 0 0.00% . 

Mid rage 9 0 9.0 0.0 0.00%; : 

High range 21:0 21.0 0.Q. -, - 0:00% • 

SYSTEM CALIBRATION BIAS AND DRIFT DATA: 

Note: System Cal bias cannot exceed +/- 5 percent of span. Drift cannot exceed +/- 3 percent of span 

Cal Values 

Response 

Time (sec) 

Analyzer Cal 

Response, 

PPM 

System Cal 

Response, 

PPM 

System Cal 

Cal. Bias 

% of Span 

Cal Date: 7/29/2009 Cal. Time: 0749-0900 

Zero Gas 28 0.0 0.1 

Upscale Gas 29 9.0 9.0 0,00% 

Cal Date: 7/30/2009 Cal. Time: 1700-1707 

Zero Gas .---- 0.0 0.1 -9.48% 

Upscale Gas .= =9 0 9.0 0.00% 

System Calibra ion Bias = [(System Cal. Response - Analyzer Cal. Response) / Span] x 100 

Drift = [(Final System Cal. Response - Initial System Cal Response) / Span] x 100 02 
BARR 

Project 

Sample Loc. 

Date 

Operators 

Northshore Mining Company 

Furnace 12 

7/29-7/30/09 

M. Petersen 

Analyzer Make & Model API Model 200EH 

Analyzer Serial Number: 484 

Analyzer Range (span) 251 PPm 

ANALYZER CALIBRATION DATA 

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

MODIFIED EPA METHOD 7E 

ANALYZER CALIBRATION 

Cylinder 

Serial No. Certified Value 

Zero Gas CC47638 (N2) 0 

Mid-range CC74072 117 

High-range CC78164 251 

NO2 CC101276 43.2 

(1204 Waste Gas Stack) 

Cal Date: 7/29/2009 

Zero Gas 

Cylinder 

Value 

Analyzer 

Calibration 

Response 

Absolute 

Difference 

Difference, 

% of Span 

0 1 10 0,40% ; 

Mid rage 117 118 1,0 040% 

High range 251 252 1 0 0.40% 

NO2 to NOx Mode :432 ' 42.2 Cony. Eff. 97, 7%:c. :. - 

SYSTEM CALIBRATION BIAS AND DRIFT DATA: 

Note: System Cal bias cannot exceed +/- 5 percent of span. Drift cannot exceed +/- 3 percent of span 

Cal Values 

Response 

Time (sec) 

Analyzer Cal 

Response, 

PPM 

System Cal 

Response, 

PPM 

System Cal 

Cal. Bias 

% of Span 

Cal Date: 7/29/2009 Cal. Time: 0749-0900 

Zero Gas 48 1 1 0.00% 

Upscale Gas 49 118 115 -1.20% 

Cal Date: 7/30/2009 Cal. Time: 1700-1707 

Zero Gas 1 0.00% 

Upscale Gas -. 118 115 -1 20% 

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

Project Northshore Mining Company 

Sample Loc. Furnace 12 

Date 7/29-7/30/09 

Operators M. Petersen 

MODIFIED EPA METHOD 3A 

ANALYZER CALIBRATION 

(Oxygen) 

(1204 Waste Gas Stack) 

Cylinder 

Serial No. Certified Value 

Zero Gas CC47638 (N2) 0.0 

Mid-range CC28340 9,0 

High-range CC60429 21.0 

Analyzer Make & Model Cal. Anal. Model 200 

Analyzer Serial Number: 1N07006 

Analyzer Range (span) 21 c/0 

ANALYZER CALIBRATION DATA 

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

Cal Date: 7/29/2009 

Zero Gas 

Cylinder 

Value 

Analyzer 

Calibration 

Response 

Absolute 

Difference 

Difference, 

% of Span 

0.0 • 0.0 00 0.00% 

Mid rage 9 0 9.0 So ,d o:oci%: 

High-range: . 21.0 . .0.00%1 

SYSTEM CALIBRATION BIAS AND DRIFT DATA: 

Note: System Cal bias cannot exceed +/- 5 percent of span. Drift cannot exceed +/- 3 percent of span 

Cal Values 

Response 

Time (sec) 

Analyzer Cal 

Response, 

PPM 

System Cal 

Response, 

PPM 

System Cal 

Cal. Bias 

% of Span 

Cal Date: 7/29/2009 Cal. Time: 0749-0900 

Zero Gas 30 0.0 0.0 

Upscale Gas 30 9.0 8.9 

Cal Date: 7/30/2009 Cal. Time: 1700-1707 

Zero Gas 0.0 ' 0.00% 

Upscale Gas .: 9,0 :- 8.9 .-0.48.0/0 ., 

Drift = [(Final System Cal. Response - Initial System Cal Response) / Span] x 100 02 
BARR 

Project Northshore Mining Company 

Sample Loc. Furnace 12 

Date 7/29-7/30/09 

Operators M. Petersen 

Analyzer Make & Model Cal. Anal. Model200 

Analyzer Serial Number: 1N07006 

Analyzer Range (span) 9.0 

Cylinder 

Serial No. Certified Value 

Zero Gas CC47638 (N2) 0.0 

Mid-range CC60429 5.0 

High-range CC28340 9.0 

MODIFIED EPA METHOD 3A 

ANALYZER CALIBRATION 

(Carbon Dioxide) 

(1204 Waste Gas Stack) 

ANALYZER CALIBRATION DATA 

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

Cal Date: 7/29/2009 

Zero Gas 

Cylinder 

Value 

Analyzer 

Calibration 

Response 

Absolute 

Difference 

Difference, 

% of Span 

— 00 0.0 0.0 . 0.00%.:. 

Mid rage :5.0 5.0 0.0 . 0.00% • 

High range 90 9.1 0 1 1.11% 

SYSTEM CALIBRATION BIAS AND DRIFT DATA: 

Note: System Cal bias cannot exceed +/- 5 percent of span. Drift cannot exceed +/- 3 percent of span 

Cal Values 

Response 

Time (sec) 

Analyzer Cal, 

Response, 

PPM 

System Cal 

Response, 

PPM 

System Cal 

Cal. Bias 

% of Span 

Cal Date: 7/29/2009 Cal. Time: 0749-0900 

Zero Gas 27 0,0 0,0 

Upscale Gas 27 9.1 8.9 

Cal Date: 7/30/2009 Cal. Time: 1700-1707 

Zero Gas 0.0 0.1 H 1.11% 

Upscale Gas 9.1 8.9 -2:22% 

Drift = [(Final System Cal. Response - Initial System Cal Response) / Span] x 100 CO2 
THERMOCOUPLE ID T -56 

Regression R Squared = 0.999998 

—4—Calibration Curve - Unit Under Test 

Upper Limit of Calibration 

—Lower Limit of Calibration 

—Extrapolated Calibration Curve 

1700 

1600 

fx1-6.1500 

1-1400 

300 

200 

H0 

m a) t ea 0 

900 

0 

0 800 

rY 700 

600 

500 

THERMOCOUPLE CALIBRATION 

400 

400 500 600 700 800 900 1000 1100 1200 1300 1400 1500 1600 1700 

REFERENCE TEMPERATURE, deg.R 

03ect 4),0/,12.0s- ,/ toss fgul. ps. 

THERMOCOUPLE CALIBRATION 

BARR 

Cal Date: 

THERMOCOUPLE ID 1-56 

12/23/2008 Handheld 

CALIBRATION TECHNICIAN: PRC 

REFERENCE STANDARDS TRACEABILITY DATE LABORATORY 

Hart Scientific 9103-A s/n A1B289 Report No. Al B0718 12/26/2007 Hart Scientific 

Hart Scientific 9140 s/n A1B086 Report No. A1B2024 12/26/2007 Hart Scientific 

Temperature Calibration Points 32 212 400 650 Ambient 

Reference Deg F (To) 31.8 212 400 650 70 

Probe Temp (deg F) 32 211 399 647 68 

Reference Temp (deg R) deg F + 460 491.8 672 860 1110 530 

Probe Temp (deg R), deg F + 460 492 671 859 1107 528 

Difference (degrees) -0.2 1 3 2 

% Diff Abs. T 0.0% 0.1% 0.1% 0.3% 0.4% 

Is difference less than 1.5% at all 

measured points? YES 

Are extrapolated limits less than 1.5%? YES 

FAHRENHEIT 

CALIBRATION RANGE 

-20 1200 

If not acceptable, describe corrective action: 

Technician signature 

QA signature 

00:64 7-rtzfr4-0.4 
Oseot izoyr-floy 

THERMOCOUPLE CALIBRATION 

BARR 

Cal Date: 

THERMOCOUPLE ID T -54 

12122/2008 Handheld 

CALIBRATION TECHNICIAN: PRC 

REFERENCE STANDARDS TRACEABILITY DATE LABORATORY 

Hart Scientific 9103-A s/n A1B289 Report No. A1B0718 12/26/2007 Hart Scientific 

Hart Scientific 9140 sin A1B086 Report No. A1B2024 12/26/2007 Hart Scientific 

Temperature Calibration Points 32 212 400 650 Ambient 

Reference Deg F (To) 31.9 212 400 650 70 

Probe Temp (deg F) 30 210 397 648 68 

Reference Temp (deg R) deg F + 460 491.9 672 860 1110 530 

Probe Temp (deg R), deg F + 460 490 670 857 1108 528 

Difference (degrees) 1.9 2 3 2 2 

% Diff Abs. T 0.4% 0.3% 0.3% 0.4% 

Is difference less than 1.5% at all 

measured points? YES 

, 

THERMOCOUPLE CALIBRATION 1700 

1600 

THERMOCOUPLE ID T - 54 

Regression R Squared = 0.999996 

1500 - 

1400 

-a 

s5iir 1300 

Vg 1200 

tfi 

&- 1100 

in 

L■, 1000 - a. 

8 900 

(.1 

R soo —4—Calibration Curve - Unit Under Test ce Lu 

x 700 of 1-. — Upper Limit Calibration 

Lower Limit of Calibration 600 

—Extrapolated Calibration Curve 500 — 

400 I , ■ , , 1 , , 

400 500 600 700 800 900 1000 1100 1200 1300 1400 1500 

REFERENCE TEMPERATURE, deg.R 

1600 1700 

FAHRENHEIT 

Are extrapolated limits less than 1.5%? YES CALIBRATION RANGE 

-20 1200 

If not acceptable, describe corrective action: 

Technician signature 

QA signature od 
Appendix D 

Cylinder Gas Certifications 
I III 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 

BARRO1 

TO: Barr Engineering Co 

Attn: Aaron Aamold 

7390 OHMS Lane 

Edina, MN 55439-2330 

(952) 832-2959 

REPORT NO: 54774-02 

REPORT DATE: November 25, 20080 

CUSTOMER PO NO: 20081023AA0A 

CYLINDER NUMBER: CC74072 CYLINDER. SIZE: 150A (141 •std ca.ft) CYLINDER PRESSURE: 2000 psig 

COMPONENT CONCENTRATION (v/v) REFERENCE 

i- EPA UNCERTAINTY STANDARD 

ANALYZER EXPIRATION 

MAKE, MODEL, 5/N, DETECTION DATE 

REPLICATE 

ANALYSIS DATA 

Monitor Labs Model 8440 

Serial # 135 

Continuous 

Chemiluminescence 

LAST CAL DATE: 11/18/2008 

11/25/2010 11/18/2008 11/25/2008 

117.6 ppm 117.6 ppm 

117.7 ppm 118.0 ppm 

118.0 ppm 118.0 ppm 

MEAN: 117.8 ppm 117.9 ppm 

Nitric oxide 

NOx 

Nitrogen dioxide 

117.8 ± 0.9 ppm 

117.8 ppm 

<0.6 ppm 

GMIS 

CYLINDER #: 

CC68777 

@101.1 ppmv 

02-free Nitrogen Balance 

ppm = umole/mole % = mole-% 

The above analyses were performed in accordance with Procedure 01 of the EPA Traceability Protocol, Report Number EPA-600/R97/121, dated 

September 1997. 

The above analyses are invalid if the cylinder pressure is less than 150 psi. 

ANALYST: c APPROVED: 

D.C.Marrin J. T. Marrin 

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

STANDARD CALIBRATION BASES IN ALUMINUM CYLINDERS 
J. T. Marrin 

I HI SCOTT-MA.RRIN, INC. 

6531 BOX SPRINGS BIND. • RIVERSIDE, CA 92507 

TELEPHONE (951) 653-6780 • FAX (951) 653-2430 

Report Of Analysis 

NIST-Traceable Gas Mixtures 

REPORT NO: 56176-01 

REPORT DATE: February 13, 20090 

CUSTOMER PO NO: 20090122AMMK2 

BARRO1 

TO: Barr Engineering Co 

Attn: Aaron Aamold 

7390 OHMS Lane 

• Edina, MN 55439-2330 

(952) 832-2959 

CYLINDER NUMBER: ccioine 

COMPONENT CONCENTRATION (v/v) NIST TRACEABLE 

REFERENCE STANDARD 

Nitrogen dioxide 

Nitrogen 

432 ± 0.9 ppmv 

Balance 

SRM 1683b 

Cylinder size: 150A (121 std Cu ft) 

Cylinder Pressure: 1725 psig 

sh,ejr. Life:, 6 months. • 

ppm = umole/mole % = 

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

standard listed.hereirb.Where_indicated, volumetric and gravimetric reference standards are traceable thru use of our analytical 

belance.;- NIST Report Number MMAP 232.09/202491. 

ANixLy§T: 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 
III I SCOTT-MARRIN, INC. 

6531 BOX SPRINGS BLVD, • RIVERSIDE, CA 92507 

TELEPHONE (951)653-6780 • FAX (951) 653-2430 

BARRO1 

TO: Barr Engineering Co 

Attn: Aaron Grosser 

7390 OHMS Lane 

Edina, MN 55439-2330 

(952) 832-2959 

Report Of Analysis 

EPA Protocol Gas Mixtures 

REPORT NO: 

REPORT DATE: 

CUSTOMER PO NO: 

54622-02 

October 29, 20080 

20080912CPJR 

CYLINDER NUMBER: CC28340 CYLINDER SIZE: 150A (141 std cu ft) CYLINDER PRESSURE: 2000 psig 

COMPONENT CONCENTRATION (v/v) REFERENCE ANALYZER 

± EPA UNCERTAINTY STANDARD MAKE, MODEL, S/N, DETECTION 

EXPIRATION 

DATE 

REPLICATE 

ANALYSIS DATA 

GMIS 

CYLINDER #: 

CC83094 

@ 8.09 % 

GMIS 

CYLINDER #: 

CC51181 

@ 10.04% 

Carbon dioxide 8.98 ± 0.09 % 

Oxygen 9.02 ± 0.05 % 

'Nitrogen Balance 

Varian Model 3400 10/27/2011 

Serial # 10680 

Thermal Conductivity 

Gas Chromotography 

LAST CAL DATE: 10/24/2008 ME AN: 

Varian Model 3800 10/23/201 1 

Serial # 

Thermal Conductivity 

Gas Chromotography 

LAST CAL DATE: 10/2/2008 ME AN: 

10/27/2008 

8.98% 

8,98 % 

8,98% 

8.98% 

10/23/2008 

9.03% 

9.01 % 

9.01 % 

9.02% 

ppm = umole/mole % = mole-% 

The above analyses were performed in accordance with Procedure 01 of the EPA Traceability Protocol, Report Number EPA-600/R97/121, dated 

September 1997. 

The above analyses are inva id if the pylinder pressure is less than 160 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 ant or reanalysis thereof by the company without extra cost. 

STANDARD CALIBRATION GASES IN ALUMINUM CYLINDERS 
111 1 6531 BOX SPRING-8 BLVD. • RIVERISIDE,PCA 92507 

INC. 

TELEPHONE (951) 653-6780 • FAX (951) 653-2430 

Report Of Analysis 

EPA Protocol Gas Mixtures 

BARRO1 

TO: Barr Engineering Co 

Attn: Aaron Aamold 

7390 OHMS Lane 

Edina, MN 55439-2330 

(952) 832-2959 

REPORT NO: 55580-02 

REPORT DATE: April 30, 200911 

CUSTOMER PO NO: 20090401AAGA 

CYLINDER NUMBER: CC60429 

COMPONENT 

CYLINDER SIZE: 150A -(141 std Cu ft) 

ANALYZER 

MAKE, MODEL, SIN, DETECTION 

CYLINDER PRESSURE: 2000 psig 

EXPIRATION REPLICATE 

DATE ANALYSIS DATA 

CONCENTRATION (v/v) REFERENCE 

± EPA UNCERTAINTY STANDARD 

Carbon dioxide 5.03 ± 0.05 % 

Oxygen 21.02 ± 0.22 % 

Nitrogen Balance 

GMIS Varian Model 3400 4/30/2012 4/30/2009 

CYLINDER #: Serial # 10680 5.04 % 

CC83094 Thermal Conductivity 5.03 % 

@ 8.09% Gas Chromotography 5.02 % 

LAST CAL DATE: 4/2/2009 MEAN: 5,03 % 

GMIS Varian Model 3800 4/24/2012 4/24/2009 

CYLINDER #: Serial # 21.01 % 

ALM031591 Thermal Conductivity 21.01 % 

@ 24.39% Gas Chromotography 21.05% 

LAST CAL DATE: 4/712009 MEAN: 21.02,% 

ppm = umole/mole % = 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 pylinder pressure is less than 150 psig, 

ANALYST: APPROVED: 

M.S.Calhoun J. T. Marrin 

The only liability of this company for gas which falls 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 E 

Process Operating Data 
Fce 11 NOx 

Timestamp 

1101 

CEMS 

Flow 

1102 

CEMS 

Flow 

1103 

CEMS 

Flow 

1104 

CEMS 

Flow 

1105 

CEMS 

Flow 

7/27/2009 18:00 83.10 91.71 86.09 78.22 83.59 

7/27/2009 18:30 83.12 91.76 86.03 78.00 83.28 

7/27/2009 19:00 83.11 91.42 85.94 77.74 82,98 

7/27/2009 19:30 82.99 91.56 85.74 78.12 83.12 

7/27/2009 20:00 82.96 91.60 85.78 77.98 83.25 

7/27/2009 20:30 83.44 91.54 85.88 78.58 83.81 

7/27/2009 21:00 83.50 92.12 86.01 78.38 83.58 

7/27/2009 21:30 83.39 91.69 86.01 78.59 83.64 

7/27/2009 22:00 83.56 91.94 86.30 79.05 84.07 

7/27/2009 22:30 83.75 92.05 86.07 78.66 83.58 

7/27/2009 23:00 84.10 91.91 86.39 78.74 84,19 

7/27/2009 23:30 83,96 92.26 86.12 78.61 83.81 

7/28/2009 0:00 83.92 92.37 86.45 78.99 84.17 

7/28/2009 0:30 83.80 92.45 86.48 78.35 83,98 

7/28/2009 1:00 83.89 91.95 86.35 78.55 83.80 

7/28/2009 1:30 83.95 92.18 86.47 78.56 84.06 

7/28/2009 2:00 83.73 91.97 86.53 78.26 83.52 

7/28/2009 2:30 80.38 88.74 83.43 75.30 80.33 

7/28/2009 3:00 83.93 92.24 86.72 78.56 84.07 

7/28/2009 3:30 83.53 92.19 86.31 78.91 84.26 

7/28/2009 4:00 80.10 87.63 82.66 78.90 84.47 

7/28/2009 4:30 83.66 92.05 86.68 75.26 80.17 

7/28/2009 5:00 83.55 91.80 86.57 78.36 84.18 

7/28/2009 5:30 83.91 92.31 86.57 78.18 83.50 

7/28/2009 6:00 83.76 91.88 86.22 78,34 83.76 

7/28/2009 6:30 83.71 91.80 86.71 77.95 83.45 

7/28/2009 7:00 82.66 91.25 85.66 77.14 82.50 

7/28/2009 7:30 83.17 91.76 86.55 78.36 83.54 

7/28/2009 8:00 83.51 91.90 86.30 77.87 82.84 

7/28/2009 8:30 83.09 91.30 86.40 78.19 83.76 

7/28/2009 9:00 83.55 92.04 86.54 78.14 83.28 

7/28/2009 9:30 83.30 91.20 86.29 78.29 83.38 

7/28/2009 10:00 83.81 91.93 86.54 77.75 83.50 

7/28/2009 10:30 83.15 91.92 86.20 78.03 83.20 

7/28/2009 11:00 83.63 91.69 86.11 77.67 83.19 

7/28/2009 11:30 83.62 91.99 86.55 77.31 82.66 

7128/2009 12:00 83.50 91.85 86.01 77.23 82.70 

7/28/2009 12:30 77.14 91.63 79.66 70.84 75.12 

7/28/2009 13:00 83.70 92.08 86.35 77.88 83.39 

7/28/2009 13:30 83.72 91.84 83.86 78.39 83.70 

7/28/2009 14:00 84.23 92.20 86.31 78.45 84.26 

7/28/2009 14:30 84.14 92.31 86.55 78.39 84.23 

7/28/2009 15:00 83.96 92.60 86.96 78.62 84.29 

7/28/2009 15:30 84.32 92.72 86.84 78.55 84.53 

7/28/2009 16:00 84.48 92.59 86.92 78.73 84.05 
7/28/2009 16:30 84.09 92.29 86.68 78.76 84.07 

7/28/2009 17:00 84.50 92.31 86.77 78.47 84.10 

7/28/2009 17:30 84.13 92.14 86.63 78.44 83.95 

7/28/2009 18:00 84.03 92.25 86.86 78.66 84.12 

7/28/2009 18:30 83.95 91.75 86.36 77.62 83.04 

7/28/2009 19:00 82.94 91.18 85.47 77.74 83.10 

7/28/2009 19:30 82.06 90.48 84.96 76.55 81.87 

7/28/2009 20:00 81.84 90.21 84.57 76.94 82.18 

7/28/2009 20:30 81.98 90.61 84.74 76.91 82.31 

7/28/200921:00 82.09 90.48 84.80 76.20 81.27 

7/28/2009 21:30 82.41 91.32 85.52 76.89 82.01 

7/28/2009 22:00 83.79 92.41 86.63 77.70 83.18 

7/28/2009 22:30 83.43 91.79 85.72 77.10 82.27 

7/28/2009 23:00 83.60 91.74 86.16 77.92 83.49 

7/28/2009 23:30 83.68 92.18 86.40 77.75 83.36 

7/29/2009 0:00 83.48 91.94 86.39 77.91 83.79 

7/29/2009 0:30 84.03 92.29 86.84 78.23 83.66 

7/29/2009 1:00 83.56 92.25 86.85 78.29 83.61 

7/29/2009 1:30 83.97 92.41 86.97 78.11 83.65 

7/29/2009 2:00 83.55 91.95 86.86 77.89 83.58 

7/29/2009 2:30 83.85 92.25 86.98 78.13 83.84 

7/29/2009 3:00 84.17 92.45 86.81 78.00 83.63 

7/29/2009 3:30 84.20 92.29 86.86 78.81 84.23 

7/29/2009 4:00 83.79 92.02 86.60 78.29 84.00 

7/29/2009 4:30 83.90 92.25 86.79 78.46 83.70 

7/29/2009 5:00 83.88 92.66 87.10 78.50 84.13 

7/29/2009 5:30 83.81 92.63 86.90 78.66 84.68 

7/29/2009 6:00 84.49 92.56 86.82 79.04 84.97 
Furnace 12 Stack Testing 

Combustion Zone 

Temperature (F) 

Gas Row. 

niefn 

07/29/09 10:00 244 2301 140 

07/29/09 11:00 241 2299 135 

07/29/09 12:00 240 2300 135 

07/29/09 13:00 238 2302 133 

07/29/09 14:00 237 2297 133 

07/29/09 15:00 237 2300 132 

07/29/09 16:00 235 2303 132 

07/29/09 17:00 243 2299 133 

07/29/09 18:00 245 2299 134 

07/29/09 19:00 246 2301 133 

07/29/09 20:00 246 2301 134 

07/29/09 21:00 246 2300 134 

07/29/09 22:00 245 2301 133 

07/29/09 23:00 245 2301 133 

07/30/09 00:00 245 2301 133 

07/30/09 01:00 245 2301 134 

07/30/09 02:00 247 2302 133 

07/30/09 03:00 250 2304 133 

07/30/09 04:00 250 2297 135 

07/30/09 05:00 251 2299 135 

07/30/09 06:00 252 2300 134 

07/30/09 07:00 255 2303 135 

07/30/09 08:00 249 2302 135 

07/30/09 09:00 249 2301 135 

07/30/09 10:00 250 2296 134 

07/30/09 11:00 249 2295 134 

07/30/09 12:00 249 2298 133 

07/30/09 13:00 249 2297 133 

07/30/09 14:00 252 2301 135 

07/30/09 15:00 253 2299 135 

07/30/09 16:00 250 2299 135 

07/30/09 17:00 248 2301 135 
Fce 12 NOx 

Timestam p 

1201 

CEMS 

Flow 

1202 

CEMS 

Flow 

1203 

CEMS 

Flow 

1204 

CEMS 

Flow 

1205 

CEMS 

Flow 

7/29/2009 9:00 78.29 74.07 83.89 79.61 81.22 

7/29/2009 9:30 78.10 73.97 83.84 79.27 80.38 

7/29/2009 10:00 77.78 73.44 83.21 79.13 80.63 

7/29/2009 10:30 77.88 73.34 83.36 79.24 80.55 

7/29/2009 11:00 77.76 73.34 83.13 78.66 79.85 

7/29/2009 11:30 77.57 73.27 83.25 78.69 79.98 

7/29/2009 12:00 77.80 73.61 83.41 78.35 79.64 

7/29/2009 12:30 77.81 73.59 83.13 78.24 79.47 

7/29/2009 13:00 77.61 73.39 83.08 78.87 80.22 

7/29/2009 13:30 77.94 73.29 82.72 78.48 79.35 

7/29/2009 14:00 78.02 73.27 82.93 79.28 80.29 

7/29/2009 14:30 77.56 73.04 83.17 78.40 79.76 

7/29/2009 77.29 73.26 82.88 78.24 79.25 

7/29/2009 15:30 77.55 73.41 83.37 78.56 79.75 

7/29/2009 16:00 77.60 73.66 83.52 78.13 79.32 

7/29/2009 16:30 77.79 73.23 82.92 78.43 79.74 

7/29/2009 17:00 77.58 73.68 83.29 78.75 79.88 

7/29/2009 17:30 77.73 73.56 83.26 78.39 79.43 

7/29/2009 18:00 77.11 73.50 83.10 78.89 80.35 

7/29/2009 18:30 77.80 73.71 83.52 78.87 79.58 

7/29/2009 19:00 77.66 73.02 83.17 78.90 79,90 

7/29/2009 19:30 78.00 73.80 83.07 78.90 79.86 

7/29/2009 20:00 78.02 73.44 83.03 78.40 79.22 

7/29/2009 20:30 77.65 73.15 82.81 79.00 80.00 

7/29/2009 21:00 77.75 73.49 83.24 78.43 79.86 

7/29/2009 21:30 77.50 73.43 82.98 78.89 79.97 

7/29/2009 22:00 77.81 73.71 83.06 79.24 80.09 

7/29/2009 22:30 78.09 73.43 83.18 78.78 79.65 

7/29/2009 23:00 77.79 73.53 82.81 79.31 80.36 

7/29/2009 23:30 77.88 73.82 83.05 79.21 79.77 

7/30/2009 0:00 77.99 73.71 83.19 79.41 79.88 

7/30/2009 0:30 77.62 73.75 83.17 79.24 80.14 

7/30/2009 1:00 78.06 73.60 83.14 78.65 79.68 

7/30/2009 1:30 77.71 73.43 83,24 79.61 80.39 

7/30/2009 2:00 78.24 73.92 83.14 79.68 80.61 

7/30/2009 2:30 77.82 73.37 83.10 80.09 81.03 

7/30/2009 3:00 75.48 71.57 80.70 80.08 81.30 

7/30/2009 3:30 78.12 73.97 83.65 77.40 78.05 

7/30/2009 4:00 78.28 73.98 83.25 80.53 81.64 

7/30/2009 4:30 77.94 74.05 83.36 79.92 80.91 

7/30/2009 5:00 77.82 73.49 83.51 80.36 81.07 

7/30/2009 5:30 78.29 73.76 83.62 80.03 81.04 

7/30/2009 6:00 78.05 73.48 83.17 79.72 81.03 

7/30/2009 6:30 77.93 73.66 83.75 80.94 81.68 

7/30/2009 7:00 77.96 73.65 83.65 80.17 80.87 

7/30/2009 7:30 77.99 74.07 83.40 79.97 81.06 
7/30/2009 8:00 77.94 73.99 83.14 79.65 80.66 

7/30/2009 8:30 77.91 73.99 83.29 79.07 80.11 

7/30/2009 9:00 77.47 73.84 83.44 79.76 80.94 

7/30/2009 9:30 77.99 73.77 82.94 79.46 80.53 

7/30/2009 10:00 77.86 73.53 82.62 79.78 80.26 

7/30/2009 10:30 77.92 73.84 83.10 79.44 80.79 

7/30/2009 11:00 77.62 73.33 82.63 79.08 80.12 

7/30/2009 11:30 77.81 73.51 83.45 80.23 80.89 

7/30/2009 12:00 78.19 73.80 83.07 80.37 80.85 

7/30/2009 12:30 78.15 73.49 83.48 80.33 81,14 

7/30/2009 13:00 78.27 73.90 83.33 80.42 81.36 

7/30/2009 13:30 78.14 73.75 83.04 80.09 80.92 

7/30/2009 14:00 78.55 74.15 83.49 80.93 81.89 

7/30/2009 14:30 78.30 74.06 83.27 80.11 81.47 

7/30/2009 78.11 73.42 82.99 79.61 81.22 

7/30/2009 15:30 78.02 73.84 83.59 79.76 80.72 

7/30/2009 16:00 77.84 73.70 82,95 78.82 79.61 

7/30/2009 16:30 77.94 73.64 82.95 79.53 80.79 

7/30/2009 17:00 78.25 73.96 83.37 79.12 80.05 
Appendix F 

Stack Test Plan 
PART II: Testing Requirements 

The tables below gives a summary of the pollutants to be tested and test methods. 

Title V Testin 

Source Description 

Stack Vent and Other 

Associated Nos. 

Pollutant Tested 

and Applicable 

Emission Limit 

Limitation Basis of 

Pollutant Tested 

Specific Methods/Procedures 

Required Citation 

Power Boilers S02: 2.5 lb/MMBtu (1 -hr 

average) 

Title I Condition: 40 CFR 

Section 52.21(k); Minn. R. 

7007.3000 

And 

Minn. R. 7011.0510, subp. 

1 (also applies) 

40 CFR Part 60, Appendix A 

EPA Methods 1-4 

Method 6 or 6C: 3 1-hr runs 

(GP001) 

Test one stack from the 

pool of GP001 on a 

rotating basis. 

Which includes stack 

vents (SV001-002) 

SV001 will be tested. 

Dry Cobbing and TPM: 0.0052 grains/dscf 

PM io: 0.0052 grains/dscf 

and MN R. limits in 

7011.0730 and 7011.0735 

apply 

Title I Condition: 40 CFR 

Section 52.21(k); Minn. R. 

7007.3000 

And 

Minn, R. 7011.0710, subp. 

1.A (also applies) 

40 CFR Part 60, Appendix A and 

40 CFR Part 51, Appendix M 

EPA Methods 1 -4 (ambient 

02/CO2) 

Method 5: 3 2-hr runs (>32 dscf) 

Method 202: 3 2-hr runs in 

conjunction with Method 5 

Conveying (GP007) 

Test one stack from the 

pool of GP007 

Which includes stack 

vents (SV021-025) 

SV022 will be tested. 

(also being tested for 

MACT) 

Furnace Discharge of TPM: 0.011 grains/dscf 

Milo: 0.011 grains/dscf 

and MN R. limits in 

7011.0730 and 7011.0735 

apply 

Title I Condition; 40 CFR 

Section 52.21(k), and co 

for EU011 and EUO20 

BACT Limits; Minn. R. 

7007.3000 

And 

Minn. R. 7011.0610, suhll 

1.A (also applies) 

40 CFR Part 60, Appendix A and 

40 CFR Part 51, Appendix M 

 EPA Methods 1 -4 (ambient 

02/CO2) 

Method 5: 3 1-hr runs (?..32 dscf) 

Method 202: 3 1-hr runs in 

conjunction with Method 5 

Finished Pellets 

(GP015) 

Test one stack from the 

pool of GP015, except 

for SV269. 

Which includes stack 

vents (SV120-121, 

SV265, SV269) 

SV121 will be tested. 

Northshore Mining Company 

Page 2 of 10 
Source Description 

Stack Vent and Other 

Associated Nos. 

Pollutant Tested 

and Applicable 

Emission Limit 

Limitation Basis of 

Pollutant Tested 

Specific Methods/Procedures 

Required Citation 

Pellet Screening SV097 Limit: 

TPM: 0.0063 grains/dscf 

PM10: 0.0063 grains/dscf 

SV122-124 Limit: 

TPM: 0.011 grains/dscf 

PM10: 0.011 grains/dscf 

SV125 Limit: 

TPM: 0.015 grains/dscf 

Pmio: 0.015 grains/dscf 

and 

PM: 0.022 grains/dscf also 

applies to all 

Title I Condition: 40 CFR 

Section 52.21(k); Minn. R. 

7007.3000 

And 

40 CFR 60.382(a)(1); 

Minn. R. 7011.2700 (also 

applies) 

40 CFR Part 60, Appendix A and 

40 CFR Part 51, Appendix M 

EPA Methods 1-4 (ambient 

02/CO2) 

Method 5: 3 1-hr runs (?_32 dscf) 

Method 202: 3 1-hr runs in 

conjunction with Method 5 

(GP016) 

Test all stacks from the 

pool of GP016. 

Which includes stack 

vents (SV097, SV122- 

125) 

All five stacks will be 

tested. 

MACT Testin 

Source Description 

Affected Source Category, Air 

Permit Group Numbers and 

Stack Vent Nos. 

Applicable 

Particulate 

Emission Limit 

Limitation Basis 

of Pollutant 

Tested 

Specific Methods/Procedures 

Required Citation 

Affected Source Cat.: Ore PM 0.008 : TABLE 1 TO 40 CFR Part 60, Appendix A 

Crushing and Handling 

Emission Units 

grains/dscf SUBPART RRRRR 

OF 40 CFR PART 63 EPA Methods 1-4 (ambient 

02/CO2) 

GP006 Crushed Ore Conveying Method 5: 3 2-hr runs (>32 dscf) 

(SV015-016) . 

Test one stack from this pool. 

SV016 — Crushed Ore Conveyor - 

East will be tested 

GP007 Dry Cobbing and 

Conveying (SV021-025) 

Test one stack from this pool. 

SV022 — Dry Cobber — East will 

be tested (This is also being tested 

for Title V) 

GP008 Coarse Tails Handling 

(SV026-029) 

Test one stack from this pool. 

SV027 — Tails Belts will be tested 

0P009 Concentrator Bins — W or 

E (SV030-031) 

Test one stack from this pool. 

SV030 — West Transfer Bin will be 

tested 

Northshore Mining Company 

Page 3 of 10 
Source Description 

Affected Source Category, Air 

Permit Group Numbers and 

Stack Vent Nos. 

Applicable 

Particulate 

Emission Limit 

Limitation Basis 

of Pollutant 

Tested 

Specific Methods/Procedures 

Required Citation 

Affected Source Cat.: Straight PM: 0.01 TABLE 1 TO 40 CFR Part 60, Appendix A 

Grate Indurating Furnace grains/dscf SUBPART RRRRR 

Processing Magnetite OF 40 CFR PART 63 EPA Methods 1-4 (ambient 

02/CO2) 

GPO 14 Pellet Indurating Furnaces Method 5: 3 2-hr runs (>32 dscf) 

(SV101-105 [Line 11], 

SV111-115 [Line 12], 

SV261-263 [Line 6], 

SV266-268 [Line 5]) 

Five stacks from Line 11 will be 

tested. 

SV101-103 Furnace 11 Hood 

Exhausts 

SV104-105 Furnace 11 Waste Gas 

Five stacks from Line 12 will be 

tested. 

SV111-113 Furnace 12 Hood 

Exhausts 

SV114-115 Furnace 12 Waste Gas 

Testing for Administrative Order Regarding Regional Haze 

Source Description 

Stack Vent and Other Associated Nos. 

Specific Methods/Procedures 

Required Citation 

Indurating Furnaces 11 and 12 Methods Modified from 

40 CFR Part 60, Appendix A 

Method 1: single point sampling 

Method 2: use continuous airflow 

monitor results 

Method 3A: not needed for use with 

airflow monitor results 

Method 4: stacks are saturated, use 

average stack temperature to calculate 

moisture content 

Method 7E: 30 1-hr averages 

determined 

Continuous airflow monitors are installed on all three Hood Exhausts and 

the two Waste Gas Stacks for each Furnace Line. Airflow rates will be 

verified at all of these stacks, for both Furnace Lines. 

30 hours of NOx emissions will be determined at each Waste Gas stack. 

Stacks to be tested 

SV101-103 Furnace 11 Hood Exhaust (3 stacks) 

SV104-105 Furnace 11 Waste Gas (2 stacks) 

SV111-113 Furnace 12 Hood Exhaust (3 stacks) 

SV114-115 Furnace 12 Waste Gas (2 stacks) 

Northshore Mining Company 

Page 4 of 10 
Part III: Operating Conditions 

Parameters that will be monitored during the test include, but are not limited to the following: 

Power Boiler 1 (EU001) 

Process Description Power Boiler Unit #1 — Coal fired boiler 

Process Parameters Fuel Use Rate (tons/lir, MMBtu/hr), power output (MW/hr): maximum 

rate of 50 MW/hr); [Unit will be fired on coal] 

Control Equipment Fabric Filters (CE001) 

Control Equipment Parameters Gas stream pressure drop (in. H 20) 

Crushed Ore Conveyors - East (EU016) 

Process Description Conveyors moving crushed ore from the crusher building to the east 

concentrator building 

Process Parameters Throughput Rate, long tons of crushed ore/hr: maximum rate of 1700 

ltph ±150 ltph 

Control Equipment Fabric Filters (CE016) 

Control Equipment Parameters None Applicable for MACT Test 

Dry Cobber - East (EUO22) 

Process Description Dry Cobbing and Conveying 

Process Parameters Throughput Rate, long tons of crushed ore/hr: maximum rate of 1200 

ltph ±200 ltph 

Control Equipment Fabric Filters (CE022) 

Control Equipment Parameters Gas stream pressure drop (in. H 20) 

Cleaning cycle pulse rate (seconds between pulses) 

Northshore Mining Company 

Page 5 of 10 
Coarse Tails Conveying (EUO27) 

Process Description Conveying belts transferring coarse tailings 

Process Parameters Throughput Rate, long tons of coarse tailings/hr: maximum rate of 400 

ltph ± 150 ltph 

Control Equipment Fabric Filters (CE027) 

Control Equipment Parameters None Applicable for MACT Test 

West Transfer Bin (EUO30) 

Process Description Conveying belts transferring crushed ore to the storage bins serving the 

concentrator sections in the west side of the concentrator building 

Process Parameters Throughput Rate, long tons of crushed ore/hr: maximum rate of 1100 

ltph ± 200 ltph 

Control Equipment Fabric Filters (CE030) 

Control Equipment Parameters None Applicable for MACT Test 

Hearth Layer (EU097) . 

Process Description Handling of finished pellets used to make the hearth layer in the Line 

11 and Line 12 Furnaces. 

Process Parameters Hearth Layer Feed Rate, long tons of finished pellets/hr: maximum 

rate of 120 long tons/hr 

Control Equipment Fabric Filters (CE097) 

Control Equipment Parameters Gas stream pressure drop (in. H 20) 

Furnace 12 Discharge (EU121) 

Process Description Finished pellets are discharged from the furnace grate 

Process Parameters Finished Pellet Production Rate, long tons of finished pellets/hr: 

maximum rate of 250 ltph 

Control Equipment Wet Scrubber, rod-deck scrubber (CE121) 

Control Equipment Parameters Gas stream pressure drop (in. H 20) 

Liquid flow rate (gpm) 

North shore Mining Company 

Page 6 of 10 
Finished Pellet Screening (EU122-125) 

Process Description Screening of the Line 11 and Line 12 finished pellets 

Process Parameters Finished Pellet Production Rate, long tons of finished pellets/hr: 

maximum rate of 250 ltph per Furnace Line 

Control Equipment Wet Scrubbers, rod-deck scrubbers (CE122-125) 

Control Equipment Parameters Gas stream pressure drop (in. H20) 

Liquid flow rate (gpm) 

Furnace 11 Hood Exhaust #1101, #1102, & #1103 (EU100) and 

Furnace 11 Waste Gas #1105 & #1104 (EU104) 

Process Description Straight Grate Indurating Furnace. A second generation furnace 

manufactured by Arthur G. McKee Company and installed in 1962 

Process Parameters Production Rate — long tons of finished pellets/hr: maximum 250 Itph 

Natural Gas Fuel Use Rate — cf/hr (x1,000) 

Control Equipment Wet Wall Electrostatic Precipitators (CE101-105) 

Control Equipment Parameters Primary amperage (amps): Power will be off for the MACT test 

Primary voltage (volts): Power will be off for the MACT test 

Gas temperature (degrees Fahrenheit) 

Liquid flow rate (gpm) 

Furnace 12 Hood Exhaust #1201, #1202, & #1203 (EU110) and 

Furnace 12 Waste Gas #1205 & #1204 (EU114) 

Process Description Straight Grate Indurating Furnace. A second generation furnace 

manufactured by Arthur G. McKee Company and installed in 1962 

Process Parameters Production Rate — long tons of finished pellets/hr: maximum 250 Itph 

Natural Gas Fuel Use Rate — cf/hr (x1,000) 

Control Equipment Wet Wall Electrostatic Precipitators (CE111-115) 

Control Equipment Parameters Primary amperage (amps): Power will be off for the MACT test 

Primary voltage (volts): Power will be off for the MACT test 

Gas temperature (degrees Fahrenheit) 

Liquid flow rate (gpm) 

Northshore Mining Company 

Page 7 of 10 
Part IV: Test Methods 

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

Test Method' 

Method 1 Sample and Velocity Traverses for Stationary Sources. (once at each stack vent for 

Title V and MACT tests) 

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

concurrent with each Method 5 sample test run. 

Method 3 

(modified) 

Determination of Oxygen and Carbon Dioxide Concentrations in Emissions from 

Stationary Sources. At the non-combustion sources ambient conditions will be 

assumed (20.9% oxygen and 0.03% carbon dioxide) and 20.9% oxygen will be verified 

using a portable oxygen analyzer. An integrated bag sample will be collected at the 

Furnace 11 and 12 MACT tests, and the Power Boiler 1 test. The integrated samples 

will be analyzed using an oxygen and carbon monoxide analyzer calibrated following 

EPA Method 3A analyzer calibration procedures. 

Method 4 Determination of Moisture Content in Stack Gases. One determination concurrent with 

each Method 5 and Method 6 test run. 

Method 5 Determination of particulate matter. 

For each Title V test, three runs per test with a sampling time equal to or greater than 

60 minutes per run and a sample volume greater than or equal to 32 dry standard 

cubic feet. All filterable particulate matter will be assumed to be PMio. 

For each MACT test, three runs per test with a sampling time equal to or greater than 

120 minutes per run and a sample volume greater than or equal to 32 dry standard 

cubic feet. 

Method 202 Determination of condensible particulate matter. Used in the determination of TPM 

and PK°(for Title V testing). 

Method 6 or 

6C 

Determination of sulfur dioxide concentrations. Three runs per test with a sampling 

time equal to or greater than 60 minutes per run. 

All test methods are found in 40 CFR Part 60 Appendix A and 40 CRF Part 60 Appendix M with modifications listed 

above. 

Test Methods for NOx Testing on the Waste Gas Stacks (30-hrs) 

Modified 

Method 1 

One sample point will be used to collect the gas sample for NOx and 02/CO2 analysis. 

Airflow Rate The airflow rate monitors that are in stalled on the stacks will be used to obtain the 

airflow rates of each stack. These results will be corrected for the saturated moisture 

content of the stack to determine the dry standard airflow rate. 

If the airflow rate monitors are not available during the time of the NOx testing, the the 

following procedures will be used. An "S" type pitot tube fixed at a representative single 

point in each stack. A full traverse of the stack will be recorded (once at each stack 

vent) and a correction factor will be made based on the average differential pressure 

readings from the full traverse to correct any bias from the single point readings. 

Differential pressure recorded with one minute and one hour averages in inches of 

water. (30 1-hr data points for each stack vent) 

Stack temperature using a type K thermocouple, recorded with one minute and one hour 

averages in F. (30 1-hr data points for each stack vent) 

Modified Determination of Moisture Content in Stack Gases. Wet bulb/dry bulb readings will be 

Northshore Mining Company 

Page 8 of 10 
Test Methods for NOx Testing on the Waste Gas Stacks (30-hrs) 

Method 4 taken to verify saturated stack conditions. 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 at each of the Waste Gas 

stacks and will be performed following Modified EPA Method 7E and CEM guidelines. 

The method performance will be modified by collecting data over 30 hours of 

representative plant operation. 

Chemiluminescent NO/NO„ analyzers will be used to determine NOx concentrations on 

a dry basis. All analyzers will be calibrated initially for linearity and the NO 2converter 

efficiency check will be conducted with a NIST traceable NO2 in N2 balance calibration 

gas. Daily system bias calibrations with zero and span calibration gases. 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 acceptability for data validating. If the bias calibration results are 

greater than 5% the analyzer will be recalibrated for linearity and system bias will be 

checked again. 

A span range of -250 ppm is expected for the Waste Gas stacks. • 

Following GEM data guidelines any one hour data point is considered valid if 45 minutes 

of data during that hour is valid, the average of the valid data will be used for that hour's 

average. Therefore calibration time completed within 15 minutes/system will result in no 

data loss time. 

Data will be used like OEM data. No bias correction will be done to the raw 

concentration recordings. 

Verification of the Continuous Airflow Rate Monitors 

Method 1 Velocity Traverses for Stationary Sources. 

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

will be made and then compared with the Airflow Rate Monitor results for the same 

time period. Necessary the Airflow Monitor will be recalibrated and this procedure 

will be repeated until the Airflow Rate Monitor results are within ±10% of the 

reference method results. 

Method 3 

(modified) 

Determination of Oxygen and Carbon Dioxide Concentrations in Emissions from 

Stationary Sources. An integrated bag sample will be collected and analyzed using 

an oxygen and carbon monoxide analyzer calibrated following EPA Method 3A 

analyzer calibration procedures. 

Modified 

Method 4 

Determination of Moisture Content in Stack Gases. Wet bulb/dry bulb readings will 

be taken to verify saturated stack conditions. Further moisture calculations will 

assume saturation at the average stack temperature. 

Part V: Continuous Emissions Monitors 

There are no continuous emissions monitors that are germane to this test. 

Part VI: Other 

The emissions will be reported in units of the applicable emissions standards. Separate reports will be 

generated for tests that are conducted for similar purposes. 

Northshore Mining Company 

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Testing schedule: Week of July 27, 2009 

Mobilization Description 

July 28thto 

August 4th , 2009 

Verification of Furnace 11 and 12 Airflow Rate Monitors 

Furnace 11 and 12 MACT Testing 

Furnace 11 and 12 Waste Gas NOx Testing 

August 1 1 th to 

August 20, 2009 

Title V Testing 

Remaining MACT Testing 

Additional 

Mobilization 

(Date TBD) 

Any testing that could not be completed during the other two mobilizations 

Note: Scheduled testing order may change depending on process operating schedule. 

This test plan serves as the official request for performance audit material from the responsible enforcement 

authority. If audit samples are provided, they will be analyzed during the performance test. 

A copy of each report will be submitted within 45-days after the completion of the last test and a pdf copy 

of the complete report will be submitted on a CD within 105-days after the completion of the last test. 

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

normal maintenance schedule will be included in the test report. 

Test plans and report submittals 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 email. 

Jennifer Ramsdell 

Environmental Engineer 

Northshore Mining Company 

Northshore Mining Company 

Page 10 of 10 
Minnesota Pollution 

Control Agency 

520 Lafayette Road 

St. Paul, MN 55155-4194 

Air Performance Test Form 

Performance Test Plan Approval 

Facility Information (please print) 

Facility name: Northshore Mining Company AQ#: 27A 

Facility contact: Ms. Jennifer Ramsdell, Environmental Engineer 

Address: 10 Outer Drive, Silver Bay, MN 55614 

Phone: (218) 226-6231 

Power Boilers (GP001/ SV001 to be tested), Dry Cobbing and Conveying (GP007/SV022 to be tested), 

Furnace Discharge of Finished Pellet (GP015/SV121 to be tested), and Pellet Screening (GP016/all stacks to 

be tested) for Title V. Crushed Ore Conveyor (SV016), Dry Cobber (SV022), Tail Belts (SV027), and West 

Transfer Bin (SV030) for MACT. Pellet Indurating Furnaces 11 and 12 Waste Gas Stacks (GP014/SV104, 

Unit(s) to be tested: SV105, SV114, and SV115 to be tested) for NOx relating to the Regional Haze Administrative Order 

Scheduled for: Starting July 28, 2009 at your facility located in: Silver Bay, Minnesota. 

Test Plan 

Submitted on (date): July 20, 2009 Discussed on (date): July 23, 2009 

Your test plan has been approved by the Minnesota Pollution Control Agency (MPCA) as follows: 

O Shortened test notification approved 

O Test plan approved without modification 

EJ Test plan approved with the following provisions: 

1. MACT testing is not being completed to meet ongoing test requirements. At this time, units are not being completed for 

corrective action purposes. 

2. For MACT testing, provide explanation as to how results are expected to be used and units that will be represented by the 

test along with the report. Unless explained, it will be presumed that the test results are representative of the tested unit 

only. 

3. NOx test will be completed on Furnace Waste Gas Stacks only. Airflow will be verified on all stacks. Airflow monitors will 

be certified prior to test according to procedures outlined in test plan 

4. Modified Method 3/3A using a calibrated 02/CO2 analyzer shall be used to verify continuous airflow monitors operation. 

5. Record and report greenball, fired pellet, and fuel usage data during the NOx test as well as during all other tests where 

appropriate. 

6. Please be reminded all periods indicating noncompliance with emission limits must be reported to the MPCA. This 

includes any periods of engineering tests. Operating at a rate other than that required by the current air permit must also 

be reported. Deviations ultimately need to be reported on the facility's semiannual deviation and annual compliance 

certification forms. 

7. Label on CD copy should include: Facility Name, AQ File No., Emission Unit Designator, and Test Date. 

Attached Forms 

El Operating Data Summary — Combustion Sources 0 Operating Data Summary — Waste Combustors 

El Operating Data Summary — Process Sources 

• 

Operating Data Summary — Asphalt Plants 

Z Certifications Form Microfiche/CD-ROM Submittal Form 

El Performance Test Report Completeness Criteria 

Note: Forms are also available at www.pca.state.mn.us/air/performancetest.html 

aq-f6-08 

5/1/07 Page 1 of 2 
Approved by: 

Date: July 27, 2009 

Andrew Place, Pollution Control Specialist 

Compliance and Enforcement Unit 

Minnesota Pollution Control Agency 

Please contact me at 651-757-2652 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 

St. Paul, Minnesota 55155-4194 

cc: Mark Petersen, Barr Engineering Company (email) 

Bob Beresford, MPCA (email) 

aq-f6-08 

5/1/07 Page 2 of 2 
Message Page 1 of 1 

Mark Petersen 

From: Place, Andrew [Andrew.Place@state.mn.us ] 

Sent: Monday, July 27, 2009 4:12 PM 

To: Ramsdell, Jennifer 

Cc: Mark Petersen; Beresford, Robert 

Subject: Test Plan Approval 

Attachments: Northshore, Multiple Tests, 7-09.doc; TEST REPORT MICROFICHE SUBMITTAL.doc; 

Operating Data Summary for Combustion Sources.doc; Operating Data Summary for Process 

Sources.doc; PTRCC.doc; TEST REPORT CERTIFICATION.doc 

Jennifer, 

The test plan approval forms associated with the upcoming performance test(s) are included with this message. 

Use the Performance Test Report Completeness Criteria form to review the test report prior to submitting it to the 

agency. The form was designed to help ensure completeness of test reports and aid in efficient MPCA report 

review and compliance determination. It may be helpful to review the PTRCC prior to the test date in order to be 

prepared for supplying all the needed information to the test company on the day of the test. This will aid the test 

company in compiling a complete test report. 

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

www. pca. state. mn . uslair/performancetest.html 

Sincerely, 

Andy Place 

Performance Test Coordinator 

Minnesota Pollution Control Agency 

520 Lafayette Road 

St. Paul, MN 55155-4194 

(651) 757-2652 

Andy Place 

Performance Test Coordinator 

Minnesota Pollution Control Agency 

520 Lafayette Road 

St. Paul, MN 55155-4194 

651-757-2652 

11/6/2009 
Appendix G 

Project Participants 
Project Participants 

Northshore Mining Company 

Scott Gischia — Section Manager, Environmental Services 

Jennifer Ramsdell — Environmental Engineer 

Minnesota Pollution Control Agency 

Andrew Place — Performance Test Coordinator 

Bob Beresford — MPCA Duluth 

Steve Palzkill — MPCA Duluth 

Barr Engineering Company 

George Pruchnofski — Vice President 

Mark Petersen — Project Manager/Air Quality Technician 

Tom Leier — Air Quality Technician 

Tom Kuchinski — Sr. Air Quality Technician 

(Primary contact information can be found in the test plan located in Appendix F)