MN Taconite FIP Document Locator

I. State Submittals

I.A. Minnesota Regional Haze State Implementation Plan (SIP) Submittal, December 30, 2009

I.B. Minnesota Supplemental Regional Haze SIP Submittal, May 8, 2012

II. Best Available Retrofit Technology (BART) Analyses Submitted to State by Facilities 

II.A. ArcelorMittal, September 8, 2006

II.B. Hibbing, September 2006

II.C. Northshore, September 2006

II.D. United Taconite, September 2006

II.E. U.S. Steel Keetac, September 8, 2006

II.F. U.S. Steel Minntac, September 8, 2006

III. 114 Information

III.A. ArcelorMittal

III.A.1. ArcelorMittal 114 Cover Letter, May 9, 2012

III.A.2. ArcelorMittal Item 1 Response

III.A.2.a. ArcelorMittal Facility Overview

III.A.2.b. ArcelorMittal Indurating Furnace Schematic

III.A.3. ArcelorMittal Item 2 Response

III.A.3.a. ArcelorMittal Flue Gas Composition, Pellet Residence Time and Air Flow Rate Data

III.A.3.b. ArcelorMittal Temperature Data

III.A.4. ArcelorMittal Item 3 Response

III.A.4.a. ArcelorMittal Natural Gas Usage

III.A.5. ArcelorMittal Item 5 Response

III.A.5.a. ArcelorMittal 2005 Indurating Furnace Stack Test: NOx

III.A.5.b. ArcelorMittal 2006 Stack Test: NOx, SO2 and CO

III.A.5.c. ArcelorMittal 2006 Stack Test: NOx, SO2 and CO

III.A.5.d. ArcelorMittal 2006 Stack Test: NOx, SO2 and CO

III.A.5.e. ArcelorMittal 2006 Stack Test: NOx, SO2 and CO

III.A.5.f. ArcelorMittal 2006 Stack Test: NOx, SO2 and CO

III.A.5.g. ArcelorMittal 2006 Stack Test: NOx, SO2 and CO

III.A.5.h. ArcelorMittal 2006 Stack Test: NOx, SO2 and CO

III.A.5.i. ArcelorMittal 2006 Stack Test for Taconite MACT Particulate Compliance

III.A.5.j. ArcelorMittal Notice of Compliance Letter from Minnesota Pollution Control Agency (MPCA) for 2006 Stack Test for Taconite MACT 

Particulate Compliance

III.A.5.k. ArcelorMittal 2007 Indurating Furnace Stack Test: Particulate Matter, NOx, SO2, and CO

III.A.5.l. ArcelorMittal 2008 Indurating Furnace Stack Test: NOx

III.A.5.m. ArcelorMittal 2008 Indurating Furnace Stack Test: SO2

III.A.5.n. ArcelorMittal 2009 Indurating Furnace Stack Test: SO2

III.A.5.o. ArcelorMittal 2009 Indurating Furnace Stack Test: NOx

III.A.5.p. ArcelorMittal 2011 Indurating Furnace Stack Test: SO2

III.A.5.q. ArcelorMittal 2009 Indurating Furnace Stack Test: NOx

III.A.5.r. ArcelorMittal 2011 MACT Particulate Compliance Tests

III.A.6. ArcelorMittal Item 6 Response

III.A.6.a. ArcelorMittal Potential To Emit Calculations for NOx and SO2

III.A.7. ArcelorMittal Item 7 Response

III.A.7.a. ArcelorMittal – MPCA Study Entitled “Evaluation of Minnesota Taconite Wet Scrubbers at Minntac, Keewatub Taconite, Hibbing 

Taconite, and United Taconite”

III.A.7.b. ArcelorMittal – MPCA Form GI05A

III.A.7.c. ArcelorMittal – Statistical Analysis of SO2 Data from 2008 Stack Test

III.A.7.d. ArcelorMittal – Memorandum Explaining the Source of Sulfur from Each Process

III.A.8. ArcelorMittal Item 8 Response

III.A.8.a. ArcelorMittal – Summary of Conversation with Danieli-Corus on NOx Study and Low NOx Burner Retrofit
page 2 of 10

III.A.8.b. ArcelorMittal – MPCA/Barr Engineering Report Entitlted “Potential Impacts of the Federal Regional Haze and Best Available Retrofit 

Technology Rules on the Taconite Industry In Minnesota”

III.A.8.c. ArcelorMittal – Barr Email Regarding Low NOx Burners, April 27, 2012

III.A.8.d. ArcelorMittal – Proposal and Preliminary Data from EPS Technologies, Inc. Investigating the use of a catalyst, CFD24-7

III.B. Hibbing

III.B.1. Hibing 114 Cover Letter, May 4, 2012

III.B.2. Hibbing Summary of Response

III.B.3. Hibbing Item 1 Response

III.B.3.a. Hibbing Photographical Process Diagram

III.B.3.b. Hibbing Process Diagram

III.B.4. Hibbing Item 2 Response

III.B.4.a. Hibbing Flue Gas Composition

III.B.4.b. Hibbing 2010-2011 Process Data

III.B.5. Hibbing Item 3 Response

III.B.5.a. Hibbing 2007-2011 Gas Use

III.B.6. Hibbing Item 5 Response

III.B.6.a. Hibbing 1987 Stack Test: PM, NOx, SO2, CO, Pb, Orsat, Moisture, Beryllium

III.B.6.b. Hibbing 1994 Stack Test, Lines 1 and 2: PM, NOx, SO2, CO, Pb, VOC, Opacity, Total Hydrocarbon, TSP

III.B.6.c. Hibbing 1994 Stack Test, Line 2: PM, NOx, SO2, CO, Pb, VOC, Opacity, TSP

III.B.6.d. Hibbing 1994 Stack Test, Line 3: PM, NOx, SO2, CO, Pb, VOC, Opacity

III.B.6.e. Hibbing 1997 Stack Test, Lines 1, 2, and 3: NOx, CO2, O2

III.B.6.f. Hibbing 1999 Stack Test, Line 2: PM, NOx, SO2, CO, Pb, VOC, Opacity 

III.B.6.g. Hibbing 1999 Stack Test, Line 3: PM, NOx, SO2, CO, Pb, VOC

III.B.6.h. Hibbing 2004 Stack Test, Line 2: PM, NOx, SO2, CO, Pb, VOC, Opacity

III.B.6.i. Hibbing 2005 Stack Test, Lines 1 and 3: PM, NOx, SO2, CO, VOC, Opacity

III.B.6.j. Hibbing 2007 Stack Test, Lines 1, 2, and 3: NOx

III.B.6.k. Hibbing 2007 Stack Test, Line 2: NOx

III.B.6.l. Hibbing Forced Conditions from Line 2, 2007 NOx Stack Test

III.B.6.m. Hibbing 2008 Stack Test, Lines 1 and 3: NOx

III.B.6.n. Hibbing 2008 Line 1 NOx CEMS, pounds per hour

III.B.6.o. Hibbing 2008 Line 3 NOx CEMS, pounds per hour

III.B.6.p. Hibbing 2010 Stack Test, Lines 1, 2, and 3: NOx

III.B.6.q. Hibbing 2010 Stack Test Lines 1, 2, and 3: PM, NOx, SO2, CO, Pb, VOC, Opacity

III.B.6.r. Hibbing 2010 Line 1 NOx Stack Test and Lines 1 and 2 Predictive Emissions Monitoring Systems (PEMS) Relative Accuracy Test Audits 

(RATA)

III.B.6.s. Hibbing Line 1 PEMS Spreadsheet

III.B.6.t. Hibbing Line 2 PEMS Spreadsheet

III.B.6.u. Hibbing 2010 Line 1 Reference Method Data

III.B.6.v. Hibbing 2010 Line 2 Reference Method Data

III.B.6.w. Hibbing 2010 Lines 1 and 2 PEMS RATA Operating Data

III.B.6.x. Hibbing 2011 Lines 1, 2, and 3 NO2 to NOx ratio

III.B.7. Hibbing Item 6 Response

III.B.7.a. Hibbing NOx and SO2 Potential To Emit

III.B.8. Hibbing Item 7 Response

III.B.8.a. Hibbing – MPCA Study Entitled: “Evaluation of Minnesota Taconite Wet Scrubbers at Minntac, Keewatub Taconite, Hibbing 

Taconite, and United Taconite”

III.B.8.b. Hibbing – Barr Email Regarding the Cost To Increase Scrubber Efficiency, July 14, 2006

III.B.8.c. Hibbing – EPA CueCost Workbook Version 5.0

III.B.9. Hibbing Item 8 Response

III.B.9.a. Hibbing – Agenda and Discussion Points from Meeting Regarding the Technical Feasibility of Low NOx Burners and SCR

III.B.9.b. Hibbing – Budget Estimate from Vogt Power

III.B.9.c. Hibbing – Email Regarding Discussions with a Low NOx Burner Vendor
page 3 of 10

III.B.10. Hibbing Item 9 Response

III.B.10.a. Hibbing – Email from Metso Regarding Feasibility of Overfire Air

III.B.11. Hibbing Item 10 Response

III.B.11.a. Hibbing – Manufacturer Contact Information

III.B.12. Hibbing Item 11 Response

III.B.12.a. Hibbing – Combustion Chamber Modification Project, 1/26/06

III.B.12.b. Hibbing – CTG Studies, NOx: Line 3 NOx

III.B.12.c. Hibbing – CTG Studies, NOx: Line 3 NOx 25%PA

III.B.12.d. Hibbing – CTG Studies, NOx: Line 3 NOx 50%PA

III.B.12.e. Hibbing – CTG Studies, NOx: Line 3 NOx 75%PA

III.B.12.f. Hibbing – CTG Studies, NOx: Line 3 NOx 100%PA

III.B.12.g. Hibbing – CTG Studies, NOx: Lines 1, 2, and 3 NOx Balances

III.B.12.h. Hibbing – NOx Alternative Monitoring Method Cover Letter, November 12, 2009

III.B.12.i. Hibbing – NOx Alternative Monitoring Method, November 12, 2009

III.B.12.j. Hibbing – NOx Alternative Monitoring Method Cover Letter, December 9, 2009

III.B.12.k. Hibbing – NOx Alternative Monitoring Method, December 9, 2009

III.B.12.l. Hibbing – Alternative Method Proposal, March 31, 2008

III.B.12.m. Hibbing – Line 1 Alternative Method Proposal

III.B.12.n. Hibbing – Line 2 Alternative Method Proposal

III.B.12.o. Hibbing – Line 3 Alternative Method Proposal

III.B.12.p. Hibbing – NOx Formation Project: Baseline Graphs

III.B.12.q. Hibbing – NOx Formation Project: Analyze Phase

III.B.12.r. Hibbing – NOx Formation Project: Control Phase

III.B.12.s. Hibbing – NOx Formation Project: Improve Phase

III.B.12.t. Hibbing – NOx Formation Project: Define Presentation – NOx Formation

III.B.12.u. Hibbing – NOx Formation Project: Measure Presentation Template

III.B.12.v. Hibbing – PEMS Discussion Summary, June 4, 2010

III.B.12.w. Hibbing – Testing PEMS Using 24-Hour Average Predictors

III.B.12.x. Hibbing – NOx PEMS Write-up, 2012

III.B.12.y. Hibbing – Minitab File

III.B.12.z. Hibbing – Barr BART NOx Emission Reduction Analysis, December 10, 2007

III.B.13. Hibbing Item 13 Response

III.B.13.a. Hibbing – Barr Email, Discussion of Process Optimization, July 12, 2006

III.B.13.b. Hibbing Bart Analysis

III.B.14. Hibbing Item 15 Response

III.B.14.a. Hibbing – Formation of NOx in Iron Oxide Pelletizing Furnaces

III.B.14.b. Hibbing – NOx Reduction in Industrial Heat Processing

III.B.14.c. Hibbing – Measure Presentation Template

III.B.14.d. Hibbing – NOx Emission Reduction During Pellet Induration by Fuel-Addition to the Green-Pellet

III.B.14.e. Hibbing – Barr Email, Regarding Kiln NOx Emissions, May 12, 2006

III.B.15. Hibbing Item 7-9 Supporting Documents

III.B.15.a. Hibbing – Guidance Documents: 2003 BART and Taconite Report from Barr

III.B.15.b. Hibbing – Guidance Documents: Regulations and Guidelines for Best Available Retrofit Technology (BART) Determinations, 70 FR 

39164

III.B.15.c. Hibbing – Guidance Documents: Northshore Furnace 5 Reactivation Project and BACT Analysis

III.B.15.d. Hibbing – Guidance Documents: Email from Barr to MPCA Regarding NOx and SOx Control Technologies, May 9, 2006

III.B.15.e. Hibbing – Guidance Documents: MPCA's 2006 Guidelines for Facilities Conducting a BART Analysis

III.C. Northshore

III.C.1. Northshore 114 Cover Letter and Summary of Response, May 4, 2012

III.C.2. Northshore Item 1 Response

III.C.2.a. Northshore Process Description

III.C.2.b. Northshore Process Diagram
page 4 of 10

III.C.2.c. Northshore Process Pictures

III.C.2.d. Northshore Furnace Diagram

III.C.2.e. Northshore Process Descripton, Furnaces 5 and 6

III.C.2.f. Northshore Process Description, Furnaces 11 and 12

III.C.3. Northshore Item 2 Response

III.C.3.a. Northshore Operating Data

III.C.4. Northshore Item 3 Response

III.C.4.a. Northshore Natural Gas Usage

III.C.5. Northshore Item 5 Response

III.C.5.a. Northshore 2000 NOx Stack Test, SV 262, SV 113, SV 114

III.C.5.b. Northshore 2005 NOx Stack Test, SV 104, SV 261

III.C.5.c. Northshore 2006 NOx Stack Test, SV 112, SV 114

III.C.5.d. Northshore 2007 NOx Stack Test, July, SV 104

III.C.5.e. Northshore 2007 NOx Stack Test, March, SV104

III.C.5.f. Northshore 2008 SO2 Stack Test, SV 266

III.C.5.g. Northshore 2009 NOx Stack Test, EU 104, EU114

III.C.5.h. Northshore 2010 NOx Stack Test, EU 104, EU 114

III.C.5.i. Northshore 2011 NOx Stack Test, EU 104, EU 114

III.C.6. Northshore Item 6 Response

III.C.6.a. Northshore NOx and SO2 Potential to Emit Calculations

III.C.7. Northshore Item 7 Response

III.C.7.a. Northshore – Furnace 5 Restart BACT Analysis

III.C.7.b. Northshore – Barr SO2 Scrubber Cost Adjustment, January 10, 2007

III.C.7.c. Northshore – Furnace BART Report 

III.C.7.d. Northshore – Furnace BART Report: Appendix A - Control Costs

III.C.7.e. Northshore – Furnace BART Report: Appendix A - Process Boiler Control Cost

III.C.7.f. Northshore – Furnace BART Report: Appendix B – Taconite BART Response to Comment

III.C.7.g. Northshore – Furnace BART Report: Appendix B Taconite BART Protocol Revised, May 16, 2006

III.C.7.h. Northshore – Furnace BART Report: Appendix B BART Modeling Domain

III.C.7.i. Northshore – Furnace BART Report: Appendix C Modeling Report

III.C.7.j. Northshore – Furnace BART Report: Appendix C Northshore Site Plan

III.C.7.k. Northshore – Furnace BART Report: Appendix D List of Control Technologies, NOx

III.C.7.l. Northshore – Furnace BART Report: Appendix D List of Control Technologies, SO2

III.C.7.m. Northshore – Furnace BART Report: Appendix E Table of Costs Per Ton

III.C.7.n. Northshore – Furnace BART Report: Appendix F Process Boilers List of NOx Control Technologies

III.C.7.o. Northshore – Furnace BART Report: Appendix F Process Boilers List of SO2 Control Technologies

III.C.8. Northshore Item 7-9 Supporting Documents

III.C.8.a. Northshore – Guidance Documents: MPCA/Barr Engineering Report Entitlted “Potential Impacts of the Federal Regional Haze and 

Best Available Retrofit Technology Rules on the Taconite Industry In Minnesota”

III.C.8.b. Northshore – Guidance Documents: Email from Barr to MPCA Regarding NOx and SOx Control Technologies, May 9, 2006

III.C.8.c. Northshore – Guidance Documents: MPCA's 2006 Guidelines for Facilities Conducting a BART Analysis

III.C.8.d. Northshore – Guidance Documents: Regulations and Guidelines for Best Available Retrofit Technology (BART) Determinations, 70 FR 

39164

III.C.8.e. Northshore – Furnace 5 Restart BACT Analysis

III.C.9. Northshore Item 8 Response

III.C.9.a. Northshore – Barr Low NOx Burner Vendor Discussion, August 2, 2006

III.C.9.b. Northshore – Osmndson BART Comments, August 30, 2006

III.C.9.c. Northshore – Agenda and Discussion Points from Meeting Regarding the Technical Feasibility of Low NOx Burners and SCR

III.C.9.d. Northshore – Vogt Vendor Budget Estimate (Redacted)

III.C.9.e. Northshore – – MPCA/Barr Engineering Report Entitlted “Potential Impacts of the Federal Regional Haze and Best Available Retrofit 

Technology Rules on the Taconite Industry In Minnesota”

III.C.10. Northshore Item 9 Response
page 5 of 10

III.C.10.a. Northshore – Email from Metso Regarding Feasibility of Overfire Air

III.C.10.b. Northshore Furnace 5 Restart BACT Analysis

III.C.11. Northshore Item 10 Response

III.C.11.a. Northshore – Manufacturer Contact Information

III.C.12. Northshore Item 11 Response

III.C.12.a. Northshore – NOx Generation in Northshore Mining Furnaces

III.C.13. Northshore Item 12 Response

III.C.13.a. Northshore CEMS Data

III.C.14. Northshore Item 13 Response

III.C.14.a. Northshore – Barr Email, Discussion of Process Optimization, July 12, 2006

III.C.14.b. Northshore Furnace BART Report 

III.C.15. Northshore Item 14 Response

III.C.15.a. Northshore NOx CEMS Emissions Data

III.C.16. Northshore Item 15 Response

III.C.16.a. Northshore – Barr Email, Regarding Kiln NOx Emissions, May 12, 2006

III.C.16.b. Northshore – Formation of NOx in Iron Oxide Pelletizing Furnaces

III.C.16.c. Northshore NOx Generation in Northshore Mining Furnaces

III.D. United Taconite

III.D. United Taconite1. United Taconite 114 Cover Letter, May 4, 2012

III.D. United Taconite2. United Taconite Summary of 114 Response

III.D. United Taconite3. United Taconite Item 1 Response 

III.D. United Taconite3.a. United Taconite Process Diagram: Mine, External

III.D. United Taconite3.b. United Taconite Process Diagram: Crusher, External

III.D. United Taconite3.c. United Taconite Process Diagram: Concetco

III.D. United Taconite3.d. United Taconite Process Diagram: Concexco

III.D. United Taconite3.e. United Taconite Process Diagram: Filter, External

III.D. United Taconite3.f. United Taconite Process Diagram: Balling, External

III.D. United Taconite3.g. United Taconite Process Diagram: Kiln, External

III.D. United Taconite3.h. United Taconite Process Diagram: Loadout

III.D. United Taconite3.i. United Taconite Pages from 13700011-001 Air Permit-Mine

III.D. United Taconite3.j. United Taconite Pages from 13700113-005 Air Permit - Plant

III.D. United Taconite4. United Taconite Item 2 Response 

III.D. United Taconite4.a. United Taconite – Allis Chalmers Flowsheet Information All Plants

III.D. United Taconite4.b. United Taconite Operating Data

III.D. United Taconite4.c. United Taconite Process Diagram Temperature Explanation

III.D. United Taconite4.d. United Taconite – Summary Table, Furnace Line Specifications

III.D. United Taconite4.e. United Taconite – Pages from Supplemental Regional Haze SIP - March 2012 Citizen's Board

III.D. United Taconite4.f. United Taconite Line 1 Burner Manufacturing Specifications – C1110-OM Manual Line 1 Burner Specs 2011

III.D. United Taconite4.g. United Taconite Line 1 Burner Manufacturing Specifications – C1110-A-PD-01-REV1 

III.D. United Taconite4.h. United Taconite Line 1 Burner Manufacturing Specifications, Pre-August 2011 Burner – C0882-OM Manual Line 1 

Burner Specifications

III.D. United Taconite4.i. United Taconite Line 1 Burner Manufacturing Specifications, Pre-August 2011 Burner

III.D. United Taconite4.j. United Taconite Line 2 Burner Manufacturing Specifications –

III.D. United Taconite5. United Taconite Item 3 Response 

III.D. United Taconite5.a. United Taconite Natural Gas Usage

III.D. United Taconite6. United Taconite Item 4 Response 

III.D. United Taconite6.a. United Taconite Weekly Coal Analysis

III.D. United Taconite6.b. United Taconite – Pages from 13700113-005 Air Permit - Fuel Sampling 

III.D. United Taconite7. United Taconite Item 5 Response 

III.D. United Taconite7.a. United Taconite – Pages from 13700113-005 Air Permit - Stack Test Process Rates 

III.D. United Taconite7.b. United Taconite – Summary of Stack Test Reports

III.D. United Taconite7.c. United Taconite – Stack Test, June 2004 Part 1
page 6 of 10

III.D. United Taconite7.d. United Taconite – Stack Test, June 2004 Part 2

III.D. United Taconite7.e. United Taconite – Stack Test, December 2004 - January 2005

III.D. United Taconite7.f. United Taconite – Stack Test, May 2005 Part 1

III.D. United Taconite7.g. United Taconite – Stack Test, May 2005 Part 2

III.D. United Taconite7.h. United Taconite – Stack Test, April-May 2006

III.D. United Taconite7.i. United Taconite – Stack Test, December 2009

III.D. United Taconite7.j. United Taconite – Line 2 Stack Test, April 2011 

III.D. United Taconite7.k. United Taconite – Stack Test, December 2011

III.D. United Taconite8. United Taconite Item 6 Response 

III.D. United Taconite8.a. United Taconite NOx and SO2 Potential to Emit

III.D. United Taconite9. United Taconite Item 7 Response 

III.D. United Taconite9.a. United Taconite – EPA CueCost Workbook

III.D. United Taconite9.b. United Taconite – MPCA Study Entitled “Evaluation of Minnesota Taconite Wet Scrubbers at Minntac, Keewatub 

Taconite, Hibbing Taconite, and United Taconite”

III.D. United Taconite9.c. United Taconite Revised BART Analysis Submittal, Line 2 SO2 Control

III.D. United Taconite9.d. United Taconite – Barr Email Regarding the Cost To Increase Scrubber Efficiency, July 14, 2006

III.D. United Taconite9.e. United Taconite Dry ESP Feasibility Study, January 30, 2009

III.D. United Taconite9.f. United Taconite – Email: Jason Aagenes to Mary Jean Fenske with Attachment, January 31, 2007

III.D. United Taconite9.g. United Taconite – Email: Mary Jean Fenske to Jason Aagenes with Attachment, February 2, 2007

III.D. United Taconite9.h. United Taconite – Email: Beth Havlik to Jason Aagenes, May 29, 2007

III.D. United Taconite9.i. United Taconite – Email: Beth Havlik to Jason Aagenes with Attachment, May 30, 2007 

III.D. United Taconite9.j. United Taconite – Email: Mary Jean Fenske to Jason Aagenes with Attachment, June 26, 2007 

III.D. United Taconite9.k. United Taconite – Email: Beth Havlik to Jason Aagenes, June 27, 2007

III.D. United Taconite9.l. United Taconite – Email: Jason Aagenes to George Pruchnofski , June 27, 2007

III.D. United Taconite9.m. United Taconite – Email: Beth Havlik to Jason Aagenes with Attachment, July 2, 2007

III.D. United Taconite9.n. United Taconite – Email: George Pruchnofski to Jason Aagenes, July 5, 2007

III.D. United Taconite9.o. United Taconite – Email: Anne Jackson to Jason Aagenes , July 13, 2007

III.D. United Taconite9.p. United Taconite – Email: Beth Havlik to Jason Aagenes, July 24, 2007

III.D. United Taconite9.q. United Taconite – Email: George Pruchnofski to Jason Aagenes, July 24, 2007

III.D. United Taconite9.r. United Taconite – Email: Beth Havlik to Jason Aagenes, July 25, 2007

III.D. United Taconite9.s. United Taconite – Email: Beth Havlik to Jason Aagenes, April 3, 2009

III.D. United Taconite9.t. United Taconite Mass Balance Studies, July 17, 2001

III.D. United Taconite9.u. United Taconite Mass Balance Studies, August 6, 2001

III.D. United Taconite9.v. United Taconite Mass Balance Studies, July 29, 2004

III.D. United Taconite9.w. United Taconite Mass Balance Studies, Table 5, July 26, 2006

III.D. United Taconite9.x. United Taconite Mass Balance Studies, Table 6 July 26, 2006

III.D. United Taconite9.y. United Taconite Mass Balance Studies, January 28, 2010

III.D. United Taconite10. United Taconite Item 8 Response 

III.D. United Taconite10.a. United Taconite – Agenda and Discussion Points from Meeting Regarding the Technical Feasibility of Low NOx 

Burners and SCR

III.D. United Taconite10.b. United Taconite – Vogt Vendor Budget Estimate (Redacted)

III.D. United Taconite10.c. United Taconite – Email: Jason Aagenes to Mary Jean Fenske with Attachment, January 31, 2007

III.D. United Taconite11. United Taconite Item 9 Response 

III.D. United Taconite11.a. United Taconite – Email from Metso Regarding Feasibility of Overfire Air

III.D. United Taconite12. United Taconite Item 10 Response 

III.D. United Taconite12.a. United Taconite – Manufacturer Contact Information

III.D. United Taconite13. United Taconite Item 11 Response 

III.D. United Taconite13.a. United Taconite – Email Douglas Hawkins to Jason Aagenes with Attachment, July 5, 2007

III.D. United Taconite13.b. United Taconite – Line 1 Burner Observations 2012 NOx Tests

III.D. United Taconite14. United Taconite Item 12 Response 

III.D. United Taconite14.a. United Taconite CEMS Data

III.D. United Taconite14.b. United Taconite CEMS Data Calculation Explanation
page 7 of 10

III.D. United Taconite15. United Taconite Item 13 Response 

III.D. United Taconite15.a. United Taconite – Barr Email, Discussion of Process Optimization, July 12, 2006

III.D. United Taconite15.b. United Taconite BART Analysis

III.D. United Taconite16. United Taconite Item 14 Response 

III.D. United Taconite16.a. United Taconite Daily NOx Emissions

III.D. United Taconite17. United Taconite Item 15 Response 

III.D. United Taconite17.a. United Taconite – Barr Email, Regarding Kiln NOx Emissions, May 12, 2006

III.D. United Taconite17.b. United Taconite – Report: Thermal NOx Formation in a Taconite Pellet Rotary Kiln

III.D. United Taconite17.c. United Taconite – Formation of NOx in Iron Oxide Pelletizing Furnaces

III.D. United Taconite17.d. United Taconite – Model and Simulation of Heat Transfer, Magentite Oxidation and NOx Formation in a Grate-Kiln 

Taconite Pellet Induration

III.D. United Taconite18. United Taconite Item 7-9 Supporting Documentation 

III.D. United Taconite18.a. United Taconite – Guidance Documents: Email from Barr to MPCA Regarding NOx and SOx Control Technologies, 

May 9, 2006

III.D. United Taconite18.b. United Taconite – Northshore Furnace 5 Restart BACT Analysis

III.D. United Taconite18.c. United Taconite – Guidance Documents: MPCA's 2006 Guidelines for Facilities Conducting a BART Analysis

III.D. United Taconite18.d. United Taconite – Guidance Documents: MPCA/Barr Engineering Report Entitlted “Potential Impacts of the 

 III.D. United Taconite18.e. United Taconite – Guidance Documents: Regional Haze Regulations and Guidelines for Best Available Retrofit 

Technology (BART) Determinations, 70 FR 39164 

III.E. U.S. Steel Keetac

III.E. U.S. Steel Keetac1. U.S. Steel Keetac 114 Cover Letter, April 24, 2012

III.E. U.S. Steel Keetac2. U.S. Steel Keetac Item 1 Response 

III.E. U.S. Steel Keetac2.a. U.S. Steel Keetac Process Response

III.E. U.S. Steel Keetac2.b. U.S. Steel Keetac Agglomerator Flowsheet

III.E. U.S. Steel Keetac2.c. U.S. Steel Keetac Concentrator Flowsheet

III.E. U.S. Steel Keetac2.d. U.S. Steel Keetac Airflows

III.E. U.S. Steel Keetac3. U.S. Steel Keetac Item 2 Response 

III.E. U.S. Steel Keetac3.a. U.S. Steel Keetac Operating Parameters

III.E. U.S. Steel Keetac4. U.S. Steel Keetac Item 3 Response 

III.E. U.S. Steel Keetac4.a. U.S. Steel Keetac Natural Gas Usage Cover Sheet

III.E. U.S. Steel Keetac4.b. U.S. Steel Keetac Natural Gas Usage

III.E. U.S. Steel Keetac5. U.S. Steel Keetac Item 4 Response 

III.E. U.S. Steel Keetac5.a. U.S. Steel Keetac Coal Sulfur Content

III.E. U.S. Steel Keetac6. U.S. Steel Keetac Item 5 Response 

III.E. U.S. Steel Keetac6.a. U.S. Steel Keetac Stack Test Response Cover Sheet

III.E. U.S. Steel Keetac6.b. U.S. Steel Keetac Stack Test, 2006

III.E. U.S. Steel Keetac6.c. U.S. Steel Keetac Stack Test, 2005

III.E. U.S. Steel Keetac7. U.S. Steel Keetac Item 6 Response 

III.E. U.S. Steel Keetac7.a. U.S. Steel Keetac NOx and SO2 Potential to Emit Response Cover Sheet

III.E. U.S. Steel Keetac7.b. U.S. Steel Keetac NOx and SO2 Potential to Emit

III.E. U.S. Steel Keetac8. U.S. Steel Keetac Item 7 Response 

III.E. U.S. Steel Keetac8.a. U.S. Steel Keetac Wet Scrubber Information

III.E. U.S. Steel Keetac9. U.S. Steel Keetac Item 8 Response 

III.E. U.S. Steel Keetac9.a. U.S. Steel Keetac NOx Reduction Technology Evaluation Cover Sheet

III.E. U.S. Steel Keetac9.b. U.S. Steel Keetac NOx Reduction Technology Evaluation for Expansion Line 

III.E. U.S. Steel Keetac10. U.S. Steel Keetac Item 9 Response 

III.E. U.S. Steel Keetac10.a. U.S. Steel Keetac Overfire Air Response

III.E. U.S. Steel Keetac11. U.S. Steel Keetac Item 10 Response 

III.E. U.S. Steel Keetac11.a. U.S. Steel Keetac Manufacturer Contact Information Response

III.E. U.S. Steel Keetac12. U.S. Steel Keetac Item 11 Response 

III.E. U.S. Steel Keetac12.a. U.S. Steel Keetac NOx Waste Gas Study Response Cover Sheet

III.E. U.S. Steel Keetac12.b. U.S. Steel Keetac CEMS NOx Data Analysis
page 8 of 10

III.E. U.S. Steel Keetac12.c. U.S. Steel Keetac – Excerpts from Class I Report, December 2010

III.E. U.S. Steel Keetac13. U.S. Steel Keetac Item 12 Response 

III.E. U.S. Steel Keetac13.a. U.S. Steel Keetac NOx and SO2 CEMS Data Response Cover Sheet

III.E. U.S. Steel Keetac13.b. U.S. Steel Keetac Hourly NOx and SO2 Data

III.E. U.S. Steel Keetac14. U.S. Steel Keetac Item 13 Response 

III.E. U.S. Steel Keetac14.a. U.S. Steel Keetac Process Optimization Response Cover Sheet

III.E. U.S. Steel Keetac15. U.S. Steel Keetac Item 14 Response 

III.E. U.S. Steel Keetac15.a. U.S. Steel Keetac NOx Emissions Data Response Cover Sheet

III.E. U.S. Steel Keetac15.b. U.S. Steel Keetac NOx CEMS Daily and 30-Day Emissions Data

III.E. U.S. Steel Keetac16. U.S. Steel Keetac Item 15 Response 

III.E. U.S. Steel Keetac16.a. U.S. Steel Keetac NOx Emissions Sources Response Cover Sheet

III.E. U.S. Steel Keetac17. U.S. Steel Keetac Item 16 Response 

III.E. U.S. Steel Keetac17.a. U.S. Steel Keetac Persons Consulted Response

III.F. U.S. Steel Minntac

III.F. U.S. Steel Minntac1. U.S. Steel Minntac 114 Cover Letter, April 24, 2012

III.F. U.S. Steel Minntac2. U.S. Steel Minntac Item 1 Response 

III.F. U.S. Steel Minntac2.a. U.S. Steel Minntac Process Flow Response

III.F. U.S. Steel Minntac2.b. U.S. Steel Minntac Agglomerator Overview

III.F. U.S. Steel Minntac2.c. U.S. Steel Minntac Agglomerator Process Description

III.F. U.S. Steel Minntac3. U.S. Steel Minntac Item 2 Response 

III.F. U.S. Steel Minntac3.a. U.S. Steel Minntac Operating Parameters Response

III.F. U.S. Steel Minntac4. U.S. Steel Minntac Item 3 Response 

III.F. U.S. Steel Minntac4.a. U.S. Steel Minntac Natural Gas Usage

III.F. U.S. Steel Minntac5. U.S. Steel Minntac Item 4 Response 

III.F. U.S. Steel Minntac5.a. U.S. Steel Minntac Coal Sulfur Content

III.F. U.S. Steel Minntac6. U.S. Steel Minntac Item 5 Response 

III.F. U.S. Steel Minntac6.a. U.S. Steel Minntac Stack Test Response Cover Sheet

III.F. U.S. Steel Minntac6.b. U.S. Steel Minntac Miscellaneous Stack Test History Through 2011

III.F. U.S. Steel Minntac6.c. U.S. Steel Minntac Stack Tests, June 2005 #1

III.F. U.S. Steel Minntac6.d. U.S. Steel Minntac Tests, June 2005 #2 

III.F. U.S. Steel Minntac6.e. U.S. Steel Minntac Tests, July 2005 #1

III.F. U.S. Steel Minntac6.f. U.S. Steel Minntac Tests, July 2005 #2

III.F. U.S. Steel Minntac6.g. U.S. Steel Minntac Tests, August 2005 #1

III.F. U.S. Steel Minntac6.h. U.S. Steel Minntac Tests, August 2005 #2

III.F. U.S. Steel Minntac6.i. U.S. Steel Minntac Step 1 Agglomerator Stack Tests

III.F. U.S. Steel Minntac6.j. U.S. Steel Minntac Step 2 Agglomerator Stack Tests

III.F. U.S. Steel Minntac6.k. U.S. Steel Minntac Step 3 Agglomerator Stack Tests

III.F. U.S. Steel Minntac6.l. U.S. Steel Minntac Cooler Vent Stack Tests

III.F. U.S. Steel Minntac7. U.S. Steel Minntac Item 6 Response 

III.F. U.S. Steel Minntac7.a. U.S. Steel Minntac NOx and SO2 Potential to Emit Response Cover Sheet

III.F. U.S. Steel Minntac7.b. U.S. Steel Minntac NOx and SO2 Potential to Emit

III.F. U.S. Steel Minntac8. U.S. Steel Minntac Item 7 Response 

III.F. U.S. Steel Minntac8.a. U.S. Steel Minntac Wet Scrubber Information Cover Sheet

III.F. U.S. Steel Minntac8.b. U.S. Steel Minntac Sulfur Balance, 1994

III.F. U.S. Steel Minntac8.c. U.S. Steel Minntac Wet Scrubber Report

III.F. U.S. Steel Minntac9. U.S. Steel Minntac Item 8 Response 

III.F. U.S. Steel Minntac9.a. U.S. Steel Minntac NOx Reduction Technology Response Cover Sheet

III.F. U.S. Steel Minntac9.b. U.S. Steel Minntac 8-14-09 Pilot TestingLetter

III.F. U.S. Steel Minntac9.c. U.S. Steel Minntac 1-11-10 NOx Pilot Testing Letter to MPCA

III.F. U.S. Steel Minntac9.d. U.S. Steel Minntac 1-12-10 MPCA to US Steel Letter Regarding NOx Reduction Testing

III.F. U.S. Steel Minntac9.e. U.S. Steel Minntac 2-15-10 Minntac NOx Reduction Progress Update

III.F. U.S. Steel Minntac9.f. U.S. Steel Minntac 3-24-10 MPCA to Minntac Response to February 2010 Submittals
page 9 of 10

III.F. U.S. Steel Minntac9.g. U.S. Steel Minntac 9-23-10 Minntac NOx Pilot Testing Letter

III.F. U.S. Steel Minntac9.h. U.S. Steel Minntac 1-18-11 MPCA Letter to US Steel Regarding Low NOx Burner Testing

III.F. U.S. Steel Minntac9.i. U.S. Steel Minntac 1-28-11 MPCA Letter to USS

III.F. U.S. Steel Minntac9.j. U.S. Steel Minntac 6-4-2990 Aker Solutions Letter to USS

III.F. U.S. Steel Minntac9.k. U.S. Steel Minntac Final PR332002-01 US Steel Minntac - NOx Reduction Technology Report Rev 0

III.F. U.S. Steel Minntac9.l. U.S. Steel Minntac Line 6 Burner Final Report, December 1, 2011

III.F. U.S. Steel Minntac9.m. U.S. Steel Minntac Line 7 Burner Final Report, May 13, 2011

III.F. U.S. Steel Minntac9.n. U.S. Steel Minntac Line 7 Pilot Testing Update, October 22, 2010

III.F. U.S. Steel Minntac9.o. U.S. Steel Minntac Low NOx Main Burner Approval

III.F. U.S. Steel Minntac9.p. U.S. Steel Minntac Mitsubishi Decline to Bid

III.F. U.S. Steel Minntac9.q. U.S. Steel Minntac NOx Technology Report Appendix

III.F. U.S. Steel Minntac9.r. U.S. Steel Minntac Final SNCR Report, October 27, 2009

III.F. U.S. Steel Minntac9.s. U.S. Steel Minntac Response to MPCA Letter Regarding SCR and Low Temperature Oxidation

III.F. U.S. Steel Minntac10. U.S. Steel Minntac Item 9 Response 

III.F. U.S. Steel Minntac10.a. U.S. Steel Minntac Overfire Air Response

III.F. U.S. Steel Minntac11. U.S. Steel Minntac Item 10 Response

III.F. U.S. Steel Minntac11.a. U.S. Steel Minntac Manufacturer Contact Information Response

III.F. U.S. Steel Minntac12. U.S. Steel Minntac Item 11 Response

III.F. U.S. Steel Minntac12.a. U.S. Steel Minntac Waste Gas Study Response Cover Sheet

III.F. U.S. Steel Minntac12.b. U.S. Steel Minntac PR-332571 Rev0 Final Project Report

III.F. U.S. Steel Minntac12.c. U.S. Steel Minntac PR-332571 Rev1 Final Project Report-Variant Cases

III.F. U.S. Steel Minntac13. U.S. Steel Minntac Item 12 Response 

III.F. U.S. Steel Minntac13.a. U.S. Steel Minntac NOx and SO2 CEMS Data Response Cover Sheet

III.F. U.S. Steel Minntac13.b. U.S. Steel Minntac CEMS Data (2005-Current)

III.F. U.S. Steel Minntac13.c. U.S. Steel Minntac Furnace Temp (2009-Current)

III.F. U.S. Steel Minntac14. U.S. Steel Minntac Item 13 Response

III.F. U.S. Steel Minntac14.a. U.S. Steel Minntac Optimization Response Cover Sheet

III.F. U.S. Steel Minntac15. U.S. Steel Minntac Item 14 Response

III.F. U.S. Steel Minntac15.a. U.S. Steel Minntac NOx Emissions Data Response Cover Sheet

III.F. U.S. Steel Minntac15.b. U.S. Steel Minntac NOx Emissions Data

III.F. U.S. Steel Minntac16. U.S. Steel Minntac Item 15 Response

III.F. U.S. Steel Minntac16.a. U.S. Steel Minntac NOx Emissions Sources Response Cover Sheet

III.F. U.S. Steel Minntac16.b. U.S. Steel Minntac NOx Summary (Coen Report)

III.F. U.S. Steel Minntac17. U.S. Steel Minntac Item 16 Response

III.F. U.S. Steel Minntac17.a. U.S. Steel Minntac Persons Consulted Response

III.F. U.S. Steel Minntac18. U.S. Steel Minntac Item 17 Response

III.F. U.S. Steel Minntac18.a. U.S. Steel Minntac Cost Information Response

III.F. U.S. Steel Minntac18.b. U.S. Steel Minntac Line 6 Low NOx Main Burner Cost Evaluation , April 4, 2012

III.F. U.S. Steel Minntac19. U.S. Steel Minntac Item 18 Response

III.F. U.S. Steel Minntac19.a. U.S. Steel Minntac Response Regarding Improving the Performance of Line 6 Low NOX Main Burner

III.F. U.S. Steel Minntac19.b. U.S. Steel Minntac Biomass Testing Report, April 11, 2012

III.G. Barr

III.G.1. Barr – Cover Letter and Table of Contents

III.G.2. Barr – Response 1 Through 5

III.G.3. Barr – Attachment A Cost Threshold Response 1

III.G.4. Barr – Attachment B Keetac Cost Response 2

III.G.5. Barr – Attachment C Minntac Cost Response 2

III.G.6. Barr – Attachment D Northshore Cost Response 2

III.G.7. Barr – Attachment E Hibbtac Cost Response 2

III.G.8. Barr – Attachment F United Taconite Cost Response 2

III.G.9. Barr – Attachment G ArcelorMittal Cost Response 2

III.G.10. Barr – MSI BACT Report Resposne 5
page 10 of 10

III.G.11. Barr – Essar BACT Response 5

III.G.12. Barr – Northshore Furnace 5 Restart Vol I BACT Response 5

III.G.13. Barr – Keetac NOx Technology Evaluation Response 5

IV. NOx BART Analysis – Low NOx Burner Technical Support

IV.A. FIVES Fact Sheets

IV.B. U.S. Steel Minntac NOx Reduction Technology Report, January 30, 2009

IV.C. Essar Burner Test 21a, July 28, 2011

IV.D. ESML-MPCA Quarter-Scale Low NOx Burner Test Report , September 26, 2011

IV.E. Summary Report for U.S. Steel Minntac NOx Kilns 6 and 7

IV.F. U.S. Steel Minntac Line 6 Low NOx Burner Final Report, December 1, 2011

IV.G. Essar and Barr SME 2012 Presentaion

IV.H. FIVES SME 2012 Presentation, April 17, 2012

IV.I. Minntac Line 6 NOx Emissions

V. SO2 BART Analysis

V.A. Basis for SO2 Limits – No Additional Control

V.A.1. ArcelorMittal Notes

V.A.2. Hibbing Notes

V.A.3. Northshore

V.A.3.a. Northshore Notes

V.A.3.b. Northshore Production Rates

V.A.4. U.S. Steel Keetac(VA4-Keetac_SO2)

V.A.5. U.S. Steel Minntac

V.A.5.a. U.S. Steel Minntac Notes

V.A.5.b. U.S. Steel Minntac Line 3 2010-Current CEMS Data (VA5b-Minntac CEMS Data L3

V.A.5.c. U.S. Steel Minntac Line 4 2010-Current CEMS Data (VA5c-Minntac CEMS Data L4

V.A.5.d. U.S. Steel Minntac Line 5 2010-Current CEMS Data (VA5d-Minntac CEMS Data L5

V.A.5.e. U.S. Steel Minntac Line 6 2010-Current CEMS Data (VA5e-Minntac CEMS Data L6

V.A.5.f. U.S. Steel Minntac Line 7 2010-Current CEMS Data (VA5f-Minntac CEMS Data L7

V.B. Flue-Gas Desulfurization (FGD) Feasibility

V.B.1. Email from Lars Hansen to Sara Cervak Regarding Installation Times for Dry Circulating Fluid Bed Scrubbers, July 13, 2012

V.B.2. Technical Support for SO2 Control Technology

V.B.2.a. Essar

V.B.2.b. Keetac

V.B.2.c. Dry Controls Permit Application – Minntac

V.B.2.d. SO2 Emissions Summary for Tilden and UTAC

V.B.2.e. Small Unit Dry FGDs

V.B.2.f. BART DJ3 December 2007

V.B.2.g. GBB BART Eng Analysis Attachment B

V.B.3. Excerpts from ESSAR SO2 BACT

V.C. FGD Cost Effectiveness and Limits

V.C.1. Email from Chrissy Bartovich to Steven Rosenthal Regarding Capital Equipment Costs, July 2, 2012

V.C.2. Email from Chrissy Bartovich to Steven Rosenthal Regarding Line 6 Questions, July 19, 2012

V.C.3. Information on Dry FGD Costs (Includes Email from Kevin Tran to Steven Rosenthal)

V.C.4. United Taconite Line 1 and Line 2 SO2 Cost-Effectiveness Analysis, August 1, 2012

V.C.4.a. Revised Corrected Updated UTAC Line 1 GSA@90%

V.C.4.b. Revised Corrected Updated UTAC Line 1 GSA@95%

V.C.4.c. Revised Corrected Updated UTAC Line 2 GSA@90%

V.C.4.d. Revised Corrected Updated UTAC Line 2 GSA@95%

V.C.5. Email from Candice Maxwell to Steven Rosenthal Regarding United Taconite Line 1 and 2 Scrubbers, June 18, 2012

V.C.6. Cost-effectiveness Metrics

V.C.7. EPA Air Pollution Control Cost Manual

VI. Discussion of Testing, Monitoring, Recordkeeping and Reporting Requirements