Date Description SV EU CEs Pollutant NOx **68.7** SO2 **2.6** VOC **1.2** PM (Dry only) **0.0031** CO2 **0.4** O2 **20.3** NOx **51.3** SO2 **7.7** VOC **0.5** PM (Dry only) **0.0026** CO2 **0.4** O2 **20.2**

NOx **98.0** SO2 **3.7** VOC **1.6** PM (Dry only) **0.0052** CO2 **0.5** O2 **19.8** NOx **62.0** SO2 **9.2** VOC **0.5** PM (Dry only) **0.0029** CO2 **0.5** O2 **20.0**

NOx **154.5** SO2 **6.5** VOC **1.3** PM (Dry only) **0.0050** CO2 **0.8** O2 **19.3** NOx **88.4** SO2 **9.9** VOC **0.4** PM (Dry only) **0.0041** CO2 **0.6** O2 **19.5**
NOx **183.2** SO2 **6.9** VOC **1.6** PM (Dry only) **0.0048** CO2 **0.9** O2 **18.9** NOx **96.5** SO2 **11.2** VOC **0.4** PM (Dry only) **0.0038** CO2 **0.6** O2 **19.4** 6/15/2005 Furnace Line 1 Stack 5B SV 022 EU 020CEs 026, 023

6/16/2005 Furnace Line 1 Stack 5D SV 024 EU 020CEs 026, 025 6/15-16/2005 Furnace Line 1 Stack 5C SV 023 EU 020CEs 026, 024

6/23/2010 Furnace Line 1 Stack 5D SV 024 EU 020CEs 026, 025 6/23/2010 Furnace Line 1 Stack 5C SV 023 EU 020CEs 026, 024 6/22/2010 Furnace Line 1 Stack 5B SV 022 EU 020CEs 026, 023 

## Hibbing Taconite Company Flue Gas Composition - Furnace No. 1

Concentration

6/22/2010 Furnace Line 1 Stack 5ASV 021 EU 020CEs 026, 022 6/14/2005 Furnace Line 1 Stack 5ASV 021 EU 020CEs 026, 022ppmd

ppmd ppmw gr/dscf %v/v %v/v ppmd ppmd ppmw gr/dscf %v/v %v/v
ppmd ppmd ppmw gr/dscf %v/v %v/v ppmd ppmd ppmw gr/dscf %v/v %v/v
ppmd ppmd ppmw gr/dscf %v/v %v/v ppmd ppmd ppmw gr/dscf %v/v %v/v ppmd ppmd ppmw gr/dscf %v/v %v/v ppmd ppmd ppmw gr/dscf %v/v %v/v ConcentrationDate Description SV EU CEs Pollutant NOx **136.1** ppmd SO2 **10.1** ppmd VOC **0.9** ppmw PM (Dry only) **0.0040**gr/dscf CO2 **0.8** %v/v O2 **19.2** %v/v NOx **156.7** ppmd SO2 **14.5** ppmd VOC **0.5** ppmw PM (Dry only) **0.0050**gr/dscf CO2 **0.8** %v/v O2 **19.1** %v/v

NOx **119.3** ppmd SO2 **7.0** ppmd VOC **1.1** ppmw PM (Dry only) **0.0035**gr/dscf CO2 **0.7** %v/v O2 **19.4** %v/v NOx **128.4** ppmd SO2 **11.3** ppmd VOC **0.3** ppmw PM (Dry only) **0.0045**gr/dscf CO2 **0.8** %v/v O2 **19.5** %v/v
NOx **84.2** ppmd SO2 **3.9** ppmd VOC **0.9** ppmw PM (Dry only) **0.0030**gr/dscf CO2 **0.5** %v/v O2 **20.0** %v/v NOx **82.4** ppmd SO2 **8.0** ppmd VOC **0.5** ppmw PM (Dry only) **0.0043**gr/dscf CO2 **0.5** %v/v O2 **20.3** %v/v

NOx **64.2** ppmd SO2 **3.5** ppmd VOC **1.0** ppmw PM (Dry only) **0.0038**gr/dscf CO2 **0.4** %v/v O2 **20.2** %v/v NOx **61.4** ppmd SO2 **5.7** ppmd VOC **0.6** ppmw PM (Dry only) **0.0055**gr/dscf CO2 **0.4** %v/v O2 **20.4** %v/v 

### Hibbing Taconite Company Flue Gas Composition - Furnace No. 2

Concentration

6/10/2010 Furnace Line 2 Stack 5E SV 025 EU 021 CEs 031, 027 6/23-24/2004 Furnace Line 2 Stack 5E SV 025 EU 021 CEs 031, 027

6/23/2004 Furnace Line 2 Stack 5F SV 026 EU 021 CEs 031, 028

6/10/2010 Furnace Line 2 Stack 5F SV 026 EU 021 CEs 031, 028

6/9/2010 Furnace Line 2 Stack 5G SV 027 EU 021 CEs 031, 029 6/22-23/2004 Furnace Line 2 Stack 5G SV 027 EU 021 CEs 031, 029

6/22/2004 Furnace Line 2 Stack 5H SV 028 EU 021 CEs 031, 030

6/9/2010 Furnace Line 2 Stack 5H SV 028 EU 021 CEs 031, 030Date Description SV EU CEs Pollutant

NOx **65.6** SO2 **4.1** VOC **1.0** PM (Dry only) **0.0058** CO2 **0.4** O2 **20.2** NOx **42.2** SO2 **6.0** VOC **0.5** PM (Dry only) **0.0019** CO2 **0.3** O2 **20.4**

NOx **86.8** SO2 **5.1** VOC **1.0** PM (Dry only) **0.0050** CO2 **0.5** O2 **20.1** NOx **53.4** SO2 **8.7** VOC **0.5** PM (Dry only) **0.0032** CO2 **0.5** O2 **20.1**

NOx **138.4** SO2 **7.8** VOC **1.1** PM (Dry only) **0.0051** CO2 **0.8** O2 **19.3** NOx **90.3** SO2 **13.6** VOC **0.3** PM (Dry only) **0.0028** CO2 **0.8** O2 **19.4**

NOx **157.3** SO2 **9.1** VOC **1.1** PM (Dry only) **0.0041** CO2 **0.9** O2 **19.0** NOx **157.3** SO2 **9.1** VOC **1.1** PM (Dry only) **0.0029** CO2 **0.9** O2 **19.0** 6/20/2005 Furnace Line 3 Stack 5MSV 032 EU 022CEs 036, 035 6/21/2005 Furnace Line 3 Stack 5L SV 031 EU 022CEs 036, 034

6/20/2010 Furnace Line 3 Stack 5MSV 032 EU 022CEs 036, 035 6/18/2010 Furnace Line 3 Stack 5L SV 031 EU 022CEs 036, 034 6/17/2010 Furnace Line 3 Stack 5KSV 030 EU 022CEs 036, 033 6/21/2005 Furnace Line 3 Stack 5KSV 030 EU 022CEs 036, 033 

## Hibbing Taconite Company Flue Gas Composition - Furnace No. 3

Concentration

6/16/2010 Furnace Line 3 Stack 5J SV 029 EU 022CEs 036, 032 6/22-23/2005 Furnace Line 3 Stack 5J SV 029 EU 022CEs 036, 032ppmd

ppmd ppmw gr/dscf %v/v %v/v ppmd ppmd ppmw gr/dscf %v/v %v/v
ppmd ppmd ppmw gr/dscf %v/v %v/v ppmd ppmd ppmw gr/dscf %v/v %v/v
ppmd ppmd ppmw gr/dscf %v/v %v/v ppmd ppmd ppmw gr/dscf %v/v %v/v ppmd ppmd ppmw gr/dscf %v/v %v/v ppmd ppmd ppmw gr/dscf %v/v %v/v Concentration