Intent to Reissue Air Emisson Permit to Mesabi …...Draft Air Individual Permit Part 70 Reissuance...

Draft Air Individual Permit Part 70 Reissuance 06100067‐005

Permittee: Mesabi Metallics Company LLC

Facility name: Mesabi Metallics Company LLC 17113 County Rd 58 Nashwauk, MN 55769 Itasca County

Expiration date: [five years from issuance] * All Title I Conditions do not expire Stage 1 issuance date – Authorization to Construct and Operate: [future date TBD] Stage 2 issuance date – Part 70 Reissuance: [future date TBD] Permit characteristics: Federal; Part 70/Major for NSR; NSR Authorization/Limits to avoid NSR/Other NSR The emission units, control equipment and emission stacks at the stationary source authorized in this permit reissuance are as described in the submittals listed in the Permit Applications Table. The conditions included in Stage 1 of this permit action are effective on the Stage 1 Issuance Date shown above. Stage 1 conditions authorize construction and modification of the facility and the operation of the modified emissions units at the address listed above until final action is taken on Stage 2. Air Emission Permit No. 06100067‐004 remains effective until the Stage 2 Issue Date. Beginning on the Stage 2 Issue date Air Emission Permit No. 06100067‐005 supersedes Air Emission Permit No. 06100067‐004 and authorizes the Permittee to operate, construct, and modify the stationary source at the address listed above unless otherwise noted in the permit. The Permittee must comply with all the conditions of the permit. Any changes or modifications to the stationary source must be performed in compliance with Minn. R. 7007.1150 to 7007.1500. Terms used in the permit are as defined in the state air pollution control rules unless the term is explicitly defined in the permit. Unless otherwise indicated, all the Minnesota rules cited as the origin of the permit terms are incorporated into the SIP under 40 CFR § 52.1220 and as such are enforceable by U.S. Environmental Protection Agency (EPA) Administrator or citizens under the Clean Air Act. Stage 1 Issuance Approval:

Signature: [ ] This document has been electronically signed. for the Minnesota Pollution Control Agency

for Steven S. Pak, P.E., Manager Air Quality Permits Section Industrial Division

Stage 2 Issuance Approval:

Signature: [ ] This document has been electronically signed. for the Minnesota Pollution Control Agency

for Steven S. Pak, P.E., Manager Air Quality Permits Section Industrial Division

Table of Contents

Page

1. Permit applications table ............................................................................................................................................. 4 2. Where to send submittals ............................................................................................................................................ 5 3. Facility description ....................................................................................................................................................... 6 4. Summary of subject items ........................................................................................................................................... 8 5. Limits and other requirements .................................................................................................................................. 46 6. Submittal/action requirements ............................................................................................................................... 535 7. Appendices ............................................................................................................................................................... 809

Appendix A. Insignificant activities and general applicable requirements ............................................................ 809 Appendix B. Modeling Parameters and Emission Rates ........................................................................................ 810 Appendix C. Material Concentration Sampling Confidence Levels ........................................................................ 830 Appendix D. Visible Emissions Checklist ................................................................................................................ 833 Appendix E. Test‐and‐set methodology for PM2.5 ................................................................................................. 834 Appendix F. Sulfuric Acid Mist Emissions Calculations .......................................................................................... 842 Appendix G. Indurating Furnace CO2e calculations ............................................................................................... 843 Appendix H. Ambient Air Boundary Map ............................................................................................................... 845 Appendix I. 40 CFR pt. 60, subp. A—General Provisions ....................................................................................... 846 Appendix J. 40 CFR pt. 60, subp. AAa—Standards of Performance for Steel Plants: Electric Arc Furnaces and

Argon‐Oxygen Decarburization Vessels Constructed After August 17, 1983 ................................................. 964 Appendix K. 40 CFR pt. 60, subp. LL—Standards of Performance for Metallic Mineral Processing Plants ........... 973 Appendix L. 40 CFR pt. 60, subp. OOO—Standards of Performance for Nonmetallic Mineral Processing Plants 977 Appendix M. 40 CFR pt. 60, subp. IIII—Standards of Performance for Stationary Compression Ignition Internal

Combustion Engines ........................................................................................................................................ 990 Appendix N. 40 CFR pt. 63, subp. A—General Provisions .................................................................................... 1019 Appendix O. 40 CFR pt. 63, subp. DDDDD—National Emission Standards for Hazardous Air Pollutants for Major

Sources: Industrial, Commercial, and Institutional Boilers and Process Heaters.......................................... 1101 Appendix P. 40 CFR pt. 63, subp. Q—National Emission Standards for Hazardous Air Pollutants for Industrial

Process Cooling Towers ................................................................................................................................. 1197 Appendix Q. 40 CFR pt. 63, subp. RRRRR—National Emission Standards for Hazardous Air Pollutants: Taconite

Iron Ore Processing ....................................................................................................................................... 1202 Appendix R. Construction Authorization Equipment List .................................................................................... 1244 Appendix S. Fugitive Dust Control Plan ................................................................................................................ 1250 Appendix T. 40 CFR pt. 63, subp. RRRRR Compliance Equations ......................................................................... 1298 Appendix U. Mobile Source Emissions Calculations ............................................................................................ 1300 Appendix V. Mercury Emission Calculations ........................................................................................................ 1304

Permit issued: [month day, year] 06100067‐005 Permit expires: [month day, year] Page 4 of 1304

1. Permit applications table

Permit applications:

Title description Application receipt date Action number Part 70 Reissuance (supplemental information)

08/30/2012 (04/29/2020)

06100067‐005

Major Amendment (supplemental information)

03/14/2017 (04/29/2020)

Administrative Amendment 02/13/2019


2. Where to send submittals

Send submittals that are required to be submitted to the EPA regional office to: Chief Air Enforcement Air and Radiation Branch EPA Region V 77 West Jackson Boulevard Chicago, Illinois 60604

Each submittal must be postmarked or received by the date specified in the applicable Table. Those submittals required by Minn. R. 7007.0100 to 7007.1850 must be certified by a responsible official, defined in Minn. R. 7007.0100, subp. 21. Other submittals shall be certified as appropriate if certification is required by an applicable rule or permit condition.

Send submittals that are required by the Acid Rain Program to:

U.S. Environmental Protection Agency Clean Air Markets Division 1200 Pennsylvania Avenue NW (6204N) Washington, D.C. 20460

Send any application for a permit or permit amendment to:

Fiscal Services – 6th Floor Minnesota Pollution Control Agency 520 Lafayette Road North St. Paul, Minnesota 55155‐4194

Also, where required by an applicable rule or permit condition, send to the Permit Document Coordinator notices of:

a. Accumulated insignificant activities b. Installation of control equipment c. Replacement of an emissions unit, and d. Changes that contravene a permit term

Unless another person is identified in the applicable Table, send all other submittals to:

AQ Compliance Tracking Coordinator Industrial Division Minnesota Pollution Control Agency 520 Lafayette Road North St. Paul, Minnesota 55155‐4194

Or Email a signed and scanned PDF copy to: [email protected] (for submittals related to stack testing) [email protected] (for other compliance submittals) (See complete email instructions in “Routine Air Report Instructions Letter” at http://www.pca.state.mn.us/nwqh472.)


3. Facility description

The Mesabi Metallics Company LLC (MMCL) facility is located at 17113 County Road 58 in Nashwauk, Itasca County, Minnesota. MMCL — formerly known as Minnesota Steel Industries and more recently known as Essar Steel Minnesota, LLC — is currently constructing a taconite mine and taconite pellet production facility with integrated direct reduced iron and steel production facilities near Nashwauk, Minnesota on the site of the former Butler Taconite Mining Company (Butler) facility. MMCL began construction on the facility in 2009; construction is not yet complete and no part of the facility is currently operating. Once operational, MMCL will begin mining operations in newly created Pit 6 and will restart mining in Pit 5 once dewatering is complete. Currently, MMCL projects another 24 months of construction are necessary to complete construction of the pellet plant once financing is available. MMCL designed the facility to use natural gas as the process fuel for pelletizing, direct iron reduction, and steel making. Diesel fuel will be used to operate mining equipment and emergency engines. The facility will demand 450 megawatts of electric power, which will be supplied by Nashwauk Public Utility. MMCL plans to use ore concentrating and indurating processes that are common to existing taconite operations and to employ natural gas based direct iron reduction. The steel mill will use modern electric arc furnace (EAF) and metallurgy furnace technology to equip the melt shop. Unlike most other EAF‐based steelmaking operations, MMCL will use primarily DRI to charge the EAF. Scrap will only be used in the EAF for initial or post‐maintenance startup. There will be no scrap charge to the EAF at MMCL other than internally produced virgin iron or "home scrap." The MMCL facility is a major source under the Prevention of Significant Deterioration (PSD) program for particulate matter (PM), PM less than 10 microns in aerodynamic diameter (PM10), PM less than 2.5 microns in aerodynamic diameter (PM2.5), carbon monoxide (CO), nitrogen oxides (NOx), sulfur dioxide (SO2), ozone, lead, fluorides, sulfuric acid mist, hydrogen sulfide (H2S), and greenhouse gas (GHG) emissions. The MMCL facility is also a major source under the Part 70 program and a major source of hazardous air pollutants (HAPs). In its 2017 application for a major permit amendment, MMCL proposed to add additive grinding operations in order to produce crushed rock on‐site. MMCL will receive limestone and dolomite shipments by rail and will crush and dry the material to be used in the pelletizing operation. New emission units associated with this project consist of rail unloading, material conveying, crushing, and storage, specifically: EQUI 290, EQUI 291, EQUI 293, EQUI 294, EQUI 295, EQUI 296, EQUI 297, EQUI 298, EQUI 299, and EQUI 304. New fugitive sources consist of limestone and dolomite storage piles, specifically: FUGI 85, FUGI 86, FUGI 94, FUGI 95, FUGI 96, and FUGI 97. Additionally, MMCL proposed to add a pellet bunker to store finished pellets before they are loaded to rail cars. The pellet bunker is comprised of EQUI 300 and EQUI 303. The refinement of previous facility designs also necessitated the addition of several new emission units and fugitive sources, specifically, EQUI 281, EQUI 282, EQUI 283, EQUI 284, EQUI 285, EQUI 286, EQUI 287, EQUI 288, EQUI 289, EQUI 330, EQUI 331, EQUI 332, EQUI 340, EQUI 341, EQUI 342, EQUI 343, EQUI 347, EQUI 376, EQUI 383, EQUI 384, FUGI 87, FUGI 88, FUGI 90, FUGI 91, FUGI 92, FUGI 98, and FUGI 99. These are all newly identified sources throughout the facility in the ore crushing, additive handling, and pellet handling areas of the facility. MMCL proposed to install two additional diesel‐fired emergency engines ‐ EQUI 301 and EQUI 302 ‐ and increase the size of other existing diesel‐fired emergency engines: EQUI 138, EQUI 139, EQUI 149, and EQUI 266. As the main focus of this project, MMCL proposed to redirect the gas exhaust flow from several existing material handling and crushing sources to vent internally, specifically for EQUI 110, EQUI 111, EQUI 112, EQUI 113, EQUI 114, EQUI 122, EQUI 123, EQUI 124, EQUI 131, EQUI 135, EQUI 140, EQUI 141, EQUI 191, EQUI 193, EQUI 214, EQUI 251, EQUI 252, EQUI 263, EQUI 264, EQUI 333, EQUI 334, EQUI 335, EQUI 336, EQUI 337, EQUI 338, and EQUI 339. The emissions


will still be controlled by baghouses. MMCL's aim is to reduce energy costs by recirculating warm air back into facility buildings instead of heating cold outdoor air. Within this project, MMCL also refined its engineering design of the facility, leading to several changes in emission unit maximum operating capacities. The redesign resulted in an increased maximum operating capacity for EQUI 112, EQUI 113, EQUI 114, EQUI 124, EQUI 127, EQUI 131, EQUI 135, EQUI 140, EQUI 141, EQUI 191, EQUI 259, EQUI 262, EQUI 263, and EQUI 264 and maximum operating capacity decreases for EQUI 110, EQUI 111, EQUI 122, EQUI 251, EQUI 252, EQUI 253, EQUI 254, EQUI 255, EQUI 256, EQUI 333, EQUI 334 EQUI 335, EQUI 336, EQUI 337, EQUI 338, and EQUI 339. In refining its design, MMCL determined that it would expect higher traffic volumes on FUGI 6 and FUGI 20. It also determined that it would operate its mining drill at a higher rate, which will increase emissions for FUGI 30. The MPCA removed EU 022, EU 024, EU 176, and their associated stacks and control equipment from the permit. These three emission units represented the transfer of ore into the three primary grinding mills. The primary grinding mills were designed as a wet process with no emissions but the transfer to the mills was not. MMCL now intends for the material transfer to the grinding mills to be a wet process as well with no emissions.


4. Summary of subject items

SI ID: Description

Relationship type

Related SI ID: Description

TFAC 1: Mesabi Metallics Co LLC

ACTV 1: All Insignificant Activities

COMG 2: Finished Pellet Handling

has members

EQUI 114, EQUI 124, EQUI 127, EQUI 135, EQUI 205, EQUI 259, EQUI 275, EQUI 279, EQUI 286, EQUI 287, EQUI 300, EQUI 303, EQUI 330, EQUI 331, EQUI 347, EQUI 376

COMG 14: Material Loading Stacks

has members

STRU 26, STRU 73, STRU 74, STRU 75, STRU 76, STRU 89

COMG 20: DRI Pellet Handling

has members

EQUI 175, EQUI 213, EQUI 273, EQUI 276

COMG 21: Indurating Furnace

has members

EQUI 257, EQUI 258

COMG 23: Ore Crushing & Handling

has members

EQUI 110, EQUI 111, EQUI 131, EQUI 132, EQUI 140, EQUI 141, EQUI 251, EQUI 252, EQUI 253, EQUI 254, EQUI 255, EQUI 256, EQUI 262, EQUI 263, EQUI 264, EQUI 289, EQUI 333, EQUI 334, EQUI 335, EQUI 336, EQUI 337, EQUI 338, EQUI 339, EQUI 343

COMG 26: Continuous Emission Monitors

has members

EQUI 20, EQUI 21, EQUI 24, EQUI 25, EQUI 29, EQUI 30, EQUI 31, EQUI 32, EQUI 33, EQUI 41, EQUI

SI ID: Description

Relationship type

Related SI ID: Description 43, EQUI 47, EQUI 49, EQUI 64, EQUI 74

COMG 33: Indurating Furnace Stacks

has members

STRU 67, STRU 68

COMG 34: Ore Crushing and Handling Stacks

has members

STRU 58, STRU 59, STRU 83, STRU 84, STRU 85, STRU 86, STRU 158, STRU 160, STRU 165, STRU 166, STRU 167, STRU 168, STRU 169, STRU 170, STRU 171, STRU 172, STRU 173, STRU 174, STRU 175, STRU 176

COMG 35: Ore Crushing and Handling Testing Group 1

has members

STRU 171, STRU 172, STRU 173, STRU 174, STRU 175, STRU 176


has members

STRU 83, STRU 84, STRU 85, STRU 86


has members

STRU 166, STRU 167


has members

STRU 160, STRU 165, STRU 168, STRU 169, STRU 170

COMG 39: Finished Pellet Handling Stacks

has members

STRU 18, STRU 39, STRU 50, STRU 69, STRU 70, STRU 188, STRU 192, STRU 193, STRU 194, STRU 195,

Permit Issued: [month day, year] 06100067‐005 Permit Expires: [month day, year] Page 9 of 1304

SI ID: Description

Relationship type

Related SI ID: Description STRU 196, STRU 201

COMG 40: Finished Pellet Handling Testing Group 1

has members



has members



has members

STRU 18, STRU 195

COMG 43: Fugitive Sources: Non‐MACT

has members

FUGI 85, FUGI 86, FUGI 94, FUGI 95, FUGI 96, FUGI 97

COMG 44: Fugitive Sources: Case‐by‐Case MACT

has members

FUGI 5, FUGI 11, FUGI 17, FUGI 19, FUGI 43, FUGI 44, FUGI 48, FUGI 49, FUGI 50, FUGI 51, FUGI 52, FUGI 53, FUGI 54, FUGI 55, FUGI 56, FUGI 57, FUGI 58, FUGI 59, FUGI 60, FUGI 61, FUGI 62, FUGI 63, FUGI 64, FUGI 65, FUGI 66, FUGI 67, FUGI 68, FUGI 69, FUGI 70, FUGI 71, FUGI 72, FUGI 73, FUGI 74, FUGI 75, FUGI 76, FUGI 77, FUGI 78, FUGI 79, FUGI 80, FUGI 81, FUGI 82, FUGI 83

COMG 45: Fugitive Sources: Taconite MACT

has members

FUGI 6, FUGI 13, FUGI 16, FUGI 20, FUGI 24, FUGI 25, FUGI 26, FUGI

SI ID: Description

Relationship type

Related SI ID: Description 27, FUGI 28, FUGI 29, FUGI 30, FUGI 31, FUGI 32, FUGI 33, FUGI 34, FUGI 35, FUGI 36, FUGI 37, FUGI 38, FUGI 39, FUGI 40, FUGI 41, FUGI 42, FUGI 46, FUGI 47, FUGI 87, FUGI 88, FUGI 90, FUGI 91, FUGI 92, FUGI 98, FUGI 99, FUGI 100

COMG 46: Fluorspar Handling System

has members

EQUI 197, EQUI 201

COMG 47: Additive Mixing System

has members

EQUI 112, EQUI 113

COMG 49: DRI Powder Coating Handling System

has members

EQUI 250, EQUI 270

EQUI 37: Hearth Layer Baghouse Leak Detector

EQUI 110: Coarse Ore Mill Bay Tunnel 1

sends to STRU 168: Coarse Ore Mill Bay Tunnel 1 Stack (Internally Vented)


is controlled by

TREA 68: Coarse Ore Mill Bay Tunnel 1 Baghouse

EQUI 111: Fine Ore Mill Bay Tunnel 1A

sends to STRU 171: Fine Ore Mill Bay Tunnel 1A Stack (Internally Vented)


is controlled by

TREA 6: Fine Ore Mill Bay Tunnel 1A Baghouse

EQUI 112: Mixing Conveyor

sends to STRU 187: Mixing Conveyor Stack


SI ID: Description

Relationship type

Related SI ID: Description (Internally Vented)

EQUI 112: Mixing Conveyor

is controlled by

TREA 139: Mixing Conveyor Baghouse

EQUI 113: Mixer sends to STRU 187: Mixing Conveyor Stack (Internally Vented)

EQUI 113: Mixer is controlled by

TREA 139: Mixing Conveyor Baghouse

EQUI 114: Hearth Layer Grate Feed

sends to STRU 188: Hearth Layer Stack (Internally Vented)

EQUI 114: Hearth Layer Grate Feed

is controlled by

TREA 11: Hearth Layer Baghouse

EQUI 122: Mercury Control Carbon Bin

sends to STRU 189: Mercury Control Carbon Bin Stack (Internally Vented)

EQUI 122: Mercury Control Carbon Bin

is controlled by

TREA 51: Mercury Control Carbon Bin Baghouse

EQUI 123: Scrubber Control Lime Bin

sends to STRU 190: Scrubber Control Lime Bin Stack (Internally Vented)


is controlled by

TREA 52: Scrubber Control Lime Bin Baghouse

EQUI 124: Hearth Layer Feed Bin


SI ID: Description

Relationship type


EQUI 124: Hearth Layer Feed Bin

is controlled by


EQUI 127: Pellet Discharge

sends to STRU 69: Pellet Discharge Stack

EQUI 127: Pellet Discharge

is controlled by

TREA 16: Pellet Discharge Baghouse

EQUI 131: Primary Ore Crusher

sends to STRU 158: Primary Crusher Building Stack (Internally Vented)

EQUI 131: Primary Ore Crusher

is controlled by

TREA 150: Primary Crusher Building Baghouse

EQUI 132: Grizzly Scalping Screen

sends to STRU 59: Grizzly Scalping Screen Stack

EQUI 132: Grizzly Scalping Screen

is controlled by

TREA 1: Grizzly Scalping Screen Baghouse

EQUI 135: Oxides Pellet Transfer to Hearth Layer Bin

sends to STRU 69: Pellet Discharge Stack


sends to STRU 70: Hearth Layer Separation Stack




is controlled in parallel by




TREA 16: Pellet Discharge Baghouse



TREA 17: Hearth Layer Separation Baghouse


SI ID: Description

Relationship type


EQUI 138: Concentrator Fire Water Supply Pump

sends to STRU 2: Concentrator Fire Water Supply Pump Stack

EQUI 139: Concentrator Emergency Power Generator

sends to STRU 3: Concentrator Emergency Power Generator Stack

EQUI 140: Coarse Ore Storage Conveyor

sends to STRU 166: Coarse Ore Storage Conveyor Stack (Internally Vented)

EQUI 140: Coarse Ore Storage Conveyor

is controlled by

TREA 4: Coarse Ore Storage Conveyor Baghouse

EQUI 141: Fine Ore Storage Conveyor

sends to STRU 167: Fine Ore Storage Conveyor Stack (Internally Vented)

EQUI 141: Fine Ore Storage Conveyor

is controlled by

TREA 5: Fine Ore Storage Conveyor Baghouse

EQUI 149: Pellet Plant Emergency Power Generator

sends to STRU 6: Pellet Plant Emergency Power Generator Stack

EQUI 152: DRI Plant Emergency Power Generator

sends to STRU 8: DRI Plant Emergency Power Generator Stack

EQUI 157: Steel Mill Fire Water Supply Pump

sends to STRU 12: Steel Mill Fire Water Supply Pump Stack

EQUI 158: Steel Mill Emergency Power

sends to STRU 13: Steel Mill Emergency

SI ID: Description

Relationship type


Generator Power Generator Stack

EQUI 162: Calcined Limestone Day Bin

sends to STRU 74: Calcined Limestone Handling System Stack

EQUI 162: Calcined Limestone Day Bin

is controlled by

TREA 25: Calcined Limestone Handling System Baghouse

EQUI 163: DRI Quench Cooling Water Blowdown

sends to STRU 52: DRI Quench Cooling Water Blowdown Stack

EQUI 170: Bauxite Storage Bin

sends to STRU 76: Bauxite Storage Bin Stack

EQUI 170: Bauxite Storage Bin

is controlled by

TREA 28: Bauxite Storage Bin Baghouse

EQUI 175: DRI Pellet Screening and Handling

sends to STRU 35: DRI Pellet Screening and Handling Stack

EQUI 175: DRI Pellet Screening and Handling

is controlled by

TREA 39: DRI Pellet Screening and Handling Wet Scrubber

EQUI 181: DRI Package Boiler

sends to STRU 44: DRI Package Boiler Stack

EQUI 181: DRI Package Boiler

is controlled by

TREA 155: DRI Package Boiler Ultra Low NOx Burner

EQUI 186: DRI Top Gas Purification

sends to STRU 54: DRI Top Gas Purification Stack

EQUI 191: Limestone Bin sends to STRU 185: Limestone Bin Stack


SI ID: Description

Relationship type


EQUI 191: Limestone Bin is controlled by

TREA 136: Limestone Bin Bin Vent

EQUI 193: Organic Binder Bin

sends to STRU 186: Organic Binder and Sodium Carbonate Bins Stack (Internally Vented)

EQUI 193: Organic Binder Bin

is controlled by

TREA 137: Organic Binder and Sodium Carbonate Bins Baghouse

EQUI 195: Hydrated Lime Day Bin

sends to STRU 73: Hydrated Lime Handling System Stack

EQUI 195: Hydrated Lime Day Bin

is controlled by

TREA 24: Hydrated Lime Handling System Baghouse

EQUI 196: Carbon Day Bin

sends to STRU 26: Carbon Handling System Stack

EQUI 196: Carbon Day Bin

is controlled by

TREA 26: Carbon Handling System Baghouse

EQUI 197: Fluorspar Storage Bin

sends to STRU 75: Fluorspar Storage Bin Stack

EQUI 197: Fluorspar Storage Bin

is controlled by

TREA 27: Fluorspar Storage Bin Baghouse

EQUI 198: Hydrated Lime Unloading

sends to STRU 73: Hydrated Lime Handling System Stack

EQUI 198: Hydrated Lime is controlled TREA 24:

SI ID: Description

Relationship type


Unloading by Hydrated Lime Handling System Baghouse

EQUI 199: Calcined Limestone Unloading

sends to STRU 74: Calcined Limestone Handling System Stack

EQUI 199: Calcined Limestone Unloading

is controlled by

TREA 25: Calcined Limestone Handling System Baghouse

EQUI 200: Carbon Unloading

sends to STRU 26: Carbon Handling System Stack

EQUI 200: Carbon Unloading

is controlled by

TREA 26: Carbon Handling System Baghouse

EQUI 201: Fluorspar Feeder

sends to STRU 75: Fluorspar Storage Bin Stack

EQUI 201: Fluorspar Feeder

is controlled by

TREA 27: Fluorspar Storage Bin Baghouse

EQUI 202: Bauxite Feeder sends to STRU 76: Bauxite Storage Bin Stack

EQUI 202: Bauxite Feeder is controlled by

TREA 28: Bauxite Storage Bin Baghouse

EQUI 205: Oxide Pellet Screening and Handling

sends to STRU 18: Oxide Pellet Screening and Handling Stack

EQUI 205: Oxide Pellet Screening and Handling

is controlled by

TREA 20: Oxide Pellet Screening and Handling Baghouse

EQUI 211: Casting Area is monitored EQUI 31: EAF


SI ID: Description

Relationship type


by Area Stack CO CEMS

EQUI 211: Casting Area is monitored by

EQUI 32: EAF Area Stack NOx CEMS


EQUI 33: EAF Area Stack SO2 CEMS


EQUI 74: EAF Area Stack O2 CEMS

EQUI 211: Casting Area sends to EQUI 329: DRI and Steel Plant DAS


EQUI 382: EAF Area Stack Air Flow Rate Monitor

EQUI 211: Casting Area sends to STRU 24: Electric Arc Furnace Area Stack

EQUI 211: Casting Area is controlled by

TREA 29: EAF Area Baghouse

EQUI 213: Electric Arc Furnace

is monitored by

EQUI 31: EAF Area Stack CO CEMS


is monitored by



is monitored by



is monitored by



sends to EQUI 329: DRI and Steel Plant DAS


is monitored by



sends to STRU 24: Electric Arc Furnace Area Stack

SI ID: Description

Relationship type



is controlled by



is controlled by

TREA 55: EAF Oxy‐fuel Burner


is controlled by

TREA 77: EAF Air Injection Gap


is controlled by

TREA 78: EAF Dropout Box

EQUI 214: Sodium Carbonate Bin

sends to STRU 186: Organic Binder and Sodium Carbonate Bins Stack (Internally Vented)

EQUI 214: Sodium Carbonate Bin

is controlled by

TREA 137: Organic Binder and Sodium Carbonate Bins Baghouse

EQUI 215: Vacuum Degasser Boiler

sends to STRU 77: Vacuum Degasser Boiler Stack

EQUI 215: Vacuum Degasser Boiler

is controlled by

TREA 157: Vacuum Degasser Boiler Ultra Low NOx Burner

EQUI 216: Taconite Plant DAS

receives from

EQUI 20: Indurating Furnace Hood Exhaust Stack CO CEMS


receives from

EQUI 21: Indurating Furnace Hood Exhaust Stack SO2 CEMS


receives from

EQUI 24: Indurating Furnace Waste Gas Stack CO CEMS


receives from

EQUI 25: Indurating


SI ID: Description

Relationship type

Related SI ID: Description Furnace Waste Gas Stack SO2 CEMS


receives from

EQUI 37: Hearth Layer Baghouse Leak Detector


receives from

EQUI 41: Indurating Furnace Hood Exhaust Stack O2 CEMS


receives from

EQUI 43: Indurating Furnace Hood Exhaust Stack NOx CEMS


receives from

EQUI 45: Indurating Furnace Hood Exhaust Baghouse Leak Detector


receives from

EQUI 46: Indurating Furnace Waste Gas Baghouse Leak Detector


receives from

EQUI 47: Indurating Furnace Waste Gas Stack O2 CEMS


receives from

EQUI 49: Indurating Furnace Waste Gas Stack NOx CEMS


receives from

EQUI 51: Pellet Discharge Baghouse Leak Detector


receives from

EQUI 53: Hearth Layer Separation Baghouse Leak Detector

EQUI 216: Taconite Plant receives EQUI 107:

SI ID: Description

Relationship type


DAS from Indurating Furnace Waste Gas Gas Suspension Absorber Pressure Drop Monitor


receives from

EQUI 217: Grizzly Transfer Tower Baghouse Leak Detector


receives from

EQUI 218: Cobber Rejects Transfer Tower Baghouse Leak Detector


receives from

EQUI 219: Secondary Crusher Line 1 Baghouse Leak Detector


receives from



receives from



receives from

EQUI 222: Coarse Ore Storage Conveyor Baghouse Leak Detector


receives from

EQUI 223: Ore Dumping Baghouse Leak Detector


receives from

EQUI 224: Grizzly Scalping Screen Baghouse Leak Detector

EQUI 216: Taconite Plant receives EQUI 225: Fine


SI ID: Description

Relationship type


DAS from Ore Storage Conveyor Baghouse Leak Detector


receives from

EQUI 226: Coarse Ore Mill Bay Tunnel 1 Baghouse Leak Detector


receives from

EQUI 227: Fine Ore Mill Bay Tunnel 1A Baghouse Leak Detector


receives from

EQUI 233: Product Junction House 4 Baghouse Leak Detector


receives from

EQUI 237: Oxide Pellet Screening and Handling Baghouse Leak Detector


receives from



receives from

EQUI 305: Fine Ore Mill Bay Tunnel 1B Baghouse Leak Detector


receives from



receives from



receives from

EQUI 311: Fine Ore Mill Bay Tunnel 2B

SI ID: Description

Relationship type

Related SI ID: Description Baghouse Leak Detector


receives from



receives from



receives from



receives from



receives from



receives from



receives from

EQUI 320: Primary Crusher Building Baghouse Leak Detector


receives from

EQUI 327: Pellet Bunker Tripper Conveyor Baghouse Leak Detector


receives from

EQUI 328: Pellet Bunker Product Conveyor


SI ID: Description

Relationship type

Related SI ID: Description Baghouse Leak Detector


receives from

EQUI 344: Indurating Furnace Waste Gas Multiclone Pressure Drop Monitor


receives from

EQUI 350: Mixing Conveyor Baghouse Pressure Drop Monitor


receives from

EQUI 351: Mercury Control Carbon Bin Baghouse Pressure Drop Monitor


receives from

EQUI 352: Scrubber Control Lime Bin Baghouse Pressure Drop Monitor


receives from

EQUI 353: Bentonite Receiving Bin 1 Bin Vent Pressure Drop Monitor


receives from



receives from

EQUI 355: Limestone Bin Bin Vent Pressure Drop Monitor


receives from

EQUI 356: Organic Binder and Sodium Carbonate Bins Baghouse Pressure Drop

SI ID: Description

Relationship type

Related SI ID: Description Monitor


receives from

EQUI 357: Residual Silo Baghouse Pressure Drop Monitor


receives from

EQUI 358: Dolomite Bin Bin Vent Pressure Drop Monitor


receives from

EQUI 359: Bentonite Bin Bin Vent Pressure Drop Monitor


receives from

EQUI 360: Storage Bin 1 Bin Vent Pressure Drop Monitor


receives from



receives from



receives from

EQUI 363: Pneumatic Transport Vent 1 Bin Vent Pressure Drop Monitor


receives from



receives from

EQUI 365: Bentonite Unloading Baghouse 2


SI ID: Description

Relationship type

Related SI ID: Description Pressure Drop Monitor


receives from

EQUI 366: Bentonite Unloading Baghouse 1 Pressure Drop Monitor


receives from

EQUI 367: Rotary Rail Car Dumper Baghouse Pressure Drop Monitor


receives from

EQUI 368: 2100 Tonne Stone Bin Baghouse Pressure Drop Monitor


receives from

EQUI 369: 5500 Tonne Limestone Storage Bin Bin Vent Pressure Drop Monitor


receives from

EQUI 370: 5500 Tonne Dolomite Storage Bin Bin Vent Pressure Drop Monitor


receives from

EQUI 371: Train Unloading Conveyor Baghouse Pressure Drop Monitor


receives from

EQUI 372: Overland Conveyor Baghouse Pressure Drop Monitor


receives from

EQUI 373: Limestone and Dolomite Grinding Mill Baghouse Pressure Drop

SI ID: Description

Relationship type

Related SI ID: Description Monitor


receives from

EQUI 374: 55 Tonne Day Bin Bin Vent Pressure Drop Monitor


receives from



receives from

EQUI 377: Oxide Pellet Loadout Baghouse Leak Detector


receives from

EQUI 379: Indurating Furnace Waste Gas Stack Air Flow Rate Monitor


receives from

EQUI 380: Indurating Furnace Hood Exhaust Stack Air Flow Rate Monitor

EQUI 217: Grizzly Transfer Tower Baghouse Leak Detector

EQUI 218: Cobber Rejects Transfer Tower Baghouse Leak Detector

EQUI 222: Coarse Ore Storage Conveyor Baghouse Leak Detector

EQUI 225: Fine Ore Storage Conveyor Baghouse Leak Detector




SI ID: Description

Relationship type



EQUI 250: DRI Plant Powder Coating Storage Bin

sends to STRU 89: DRI Plant Powder Coating Handling Stack

EQUI 250: DRI Plant Powder Coating Storage Bin

is controlled by

TREA 23: DRI Plant Powder Coating Handling System Baghouse

EQUI 251: Grizzly Transfer Tower

sends to STRU 160: Grizzly Transfer Tower Stack (Internally Vented)

EQUI 251: Grizzly Transfer Tower

is controlled by

TREA 47: Grizzly Transfer Tower Baghouse

EQUI 252: Cobber Rejects Transfer Tower

sends to STRU 165: Cobber Rejects Transfer Tower Stack (Internally Vented)

EQUI 252: Cobber Rejects Transfer Tower

is controlled by

TREA 43: Cobber Rejects Transfer Tower Baghouse

EQUI 253: Secondary Crusher Line 1

sends to STRU 83: Secondary Crusher Line 1 Stack


is controlled by

TREA 42: Secondary Crusher Line 1 Baghouse




is controlled by


SI ID: Description

Relationship type





is controlled by





is controlled by


EQUI 257: Indurating Furnace Hood Exhaust

is monitored by

EQUI 20: Indurating Furnace Hood Exhaust Stack CO CEMS


is monitored by

EQUI 21: Indurating Furnace Hood Exhaust Stack SO2 CEMS


is monitored by

EQUI 41: Indurating Furnace Hood Exhaust Stack O2 CEMS


is monitored by

EQUI 43: Indurating Furnace Hood Exhaust Stack NOx CEMS


sends to EQUI 216: Taconite Plant DAS


is monitored by

EQUI 380: Indurating Furnace Hood Exhaust Stack Air Flow Rate Monitor


sends to STRU 67: Indurating Furnace Hood


SI ID: Description

Relationship type

Related SI ID: Description Exhaust Stack


is controlled by

TREA 13: Indurating Furnace Hood Exhaust Baghouse


is controlled by

TREA 58: Indurating Furnace Low NOx Burner

EQUI 258: Indurating Furnace Waste Gas

is monitored by

EQUI 24: Indurating Furnace Waste Gas Stack CO CEMS


is monitored by

EQUI 25: Indurating Furnace Waste Gas Stack SO2 CEMS


is monitored by

EQUI 47: Indurating Furnace Waste Gas Stack O2 CEMS


is monitored by

EQUI 49: Indurating Furnace Waste Gas Stack NOx CEMS


sends to EQUI 216: Taconite Plant DAS


is monitored by

EQUI 379: Indurating Furnace Waste Gas Stack Air Flow Rate Monitor


sends to STRU 68: Indurating Furnace Waste Gas Stack


is controlled by

TREA 14: Indurating Furnace Waste Gas Multiclone

EQUI 258: Indurating is controlled TREA 15:

SI ID: Description

Relationship type


Furnace Waste Gas by Indurating Furnace Waste Gas Baghouse


is controlled by

TREA 49: Indurating Furnace Waste Gas Gas Suspension Absorber


is controlled by

TREA 58: Indurating Furnace Low NOx Burner


is controlled by

TREA 159: Indurating Furnace Waste Gas Activated Carbon Injection

EQUI 259: Hearth Layer Separation

sends to STRU 70: Hearth Layer Separation Stack

EQUI 259: Hearth Layer Separation

is controlled by

TREA 17: Hearth Layer Separation Baghouse

EQUI 261: Space Heaters EQUI 262: Ore Dumping to Crusher

sends to STRU 58: Ore Dumping Stack

EQUI 262: Ore Dumping to Crusher

is controlled by

TREA 120: Ore Dumping Baghouse

EQUI 263: Coarse Ore Barn Pile Drop

sends to STRU 166: Coarse Ore Storage Conveyor Stack (Internally Vented)

EQUI 263: Coarse Ore Barn Pile Drop

is controlled by

TREA 4: Coarse Ore Storage Conveyor Baghouse

EQUI 264: Fine Ore Barn Pile Drop

sends to STRU 167: Fine Ore Storage Conveyor Stack (Internally Vented)


SI ID: Description

Relationship type


EQUI 264: Fine Ore Barn Pile Drop

is controlled by

TREA 5: Fine Ore Storage Conveyor Baghouse

EQUI 265: Tunnel Furnace

sends to STRU 92: Tunnel Furnace Stack

EQUI 265: Tunnel Furnace

is controlled by

TREA 61: Tunnel Furnace Low NOx Burner

EQUI 266: Pellet Plant Fire Water Supply Pump

sends to STRU 5: Pellet Plant Fire Water Supply Pump Stack

EQUI 267: DRI Plant Fire Water Booster Pump

sends to STRU 19: DRI Plant Fire Water Booster Pump Stack

EQUI 268: DRI Plant Fire Water Supply Pump

sends to STRU 7: DRI Plant Fire Water Supply Pump Stack

EQUI 269: Ladle Metallurgy Furnace

is monitored by



is monitored by



is monitored by



is monitored by





is monitored by




EQUI 269: Ladle is controlled TREA 29: EAF

SI ID: Description

Relationship type


Metallurgy Furnace by Area Baghouse EQUI 270: DRI Plant Powder Coating Day Bin

sends to STRU 89: DRI Plant Powder Coating Handling Stack

EQUI 270: DRI Plant Powder Coating Day Bin

is controlled by

TREA 23: DRI Plant Powder Coating Handling System Baghouse

EQUI 271: Ladle/Tundish Pre‐Heaters

is monitored by



is monitored by



is monitored by



is monitored by





is monitored by





is controlled by



is controlled by

TREA 56: Ladle/Tundish Pre‐heaters Low NOx Burner

EQUI 272: Vacuum Degasser

sends to STRU 29: Vacuum Degasser Stack

EQUI 272: Vacuum Degasser

is controlled by

TREA 67: Vacuum Degasser Flare


SI ID: Description

Relationship type


EQUI 273: DRI Depressurization

sends to STRU 31: DRI Depressurization Stack

EQUI 273: DRI Depressurization

is controlled by

TREA 119: DRI Depressurization Scrubber

EQUI 274: DRI Process Gas Heater

is monitored by

EQUI 29: DRI Process Gas Heater Stack NOx CEMS


is monitored by

EQUI 30: DRI Process Gas Heater Stack CO CEMS


is monitored by

EQUI 64: DRI Process Gas Heater Stack O2 CEMS




is monitored by

EQUI 381: DRI Process Gas Heater Stack Air Flow Rate Monitor


sends to STRU 33: DRI Process Gas Heater Stack


is controlled by

TREA 59: DRI Process Gas Heater Low NOx Burner

EQUI 275: Oxide Pellet Surge Bin

sends to STRU 39: Oxide Pellet Surge Bin

EQUI 275: Oxide Pellet Surge Bin

is controlled by

TREA 36: Oxide Pellet Surge Bin Baghouse

EQUI 276: DRI PTS Depressurization

sends to STRU 42: DRI PTS Depressurization Stack

EQUI 276: DRI PTS Depressurization

is controlled by

TREA 53: DRI PTS Depressurization Scrubber

EQUI 277: DRI PTS Heater sends to STRU 46: DRI

SI ID: Description

Relationship type

Related SI ID: Description PTS Heater Stack

EQUI 277: DRI PTS Heater is controlled by

TREA 156: DRI PTS Heater Ultra Low NOx Burner

EQUI 278: DRI Process Water Blowdown

sends to STRU 48: DRI Process Water Blowdown Stack

EQUI 279: Oxide Pellet Silos

sends to STRU 50: Oxide Pellet Silos Stack

EQUI 279: Oxide Pellet Silos

is controlled by

TREA 33: Oxide Pellet Silos Baghouse

EQUI 280: EAF Baghouse Dust Transfer

sends to STRU 20: EAF Baghouse Dust Transfer Stack

EQUI 280: EAF Baghouse Dust Transfer

is controlled by

TREA 30: EAF Baghouse Dust Transfer Baghouse

EQUI 281: Residual Silo sends to STRU 155: Residual Silo Stack

EQUI 281: Residual Silo is controlled by

TREA 146: Residual Silo Baghouse

EQUI 282: Dolomite Bin sends to STRU 184: Dolomite Bin Stack (Internally Vented)

EQUI 282: Dolomite Bin is controlled by

TREA 143: Dolomite Bin Bin Vent

EQUI 283: Bentonite Bin sends to STRU 183: Bentonite Bin Stack (Internally Vented)

EQUI 283: Bentonite Bin is controlled by

TREA 144: Bentonite Bin Bin Vent

EQUI 284: Storage Bin 1 sends to STRU 181: Storage Bin 1


SI ID: Description

Relationship type

Related SI ID: Description Stack (Internally Vented)

EQUI 284: Storage Bin 1 is controlled by

TREA 145: Storage Bin 1 Bin Vent

EQUI 285: Storage Bin 2 sends to STRU 182: Storage Bin 2 Stack (Internally Vented)

EQUI 285: Storage Bin 2 is controlled by


EQUI 286: Product Junction House 2

sends to STRU 193: Product Junction House 2 Stack (Internally Vented)


is controlled by

TREA 140: Product Junction House 2 Baghouse




is controlled by


EQUI 288: Bentonite Receiving Bin 3

sends to STRU 179: Bentonite Receiving Bin 3 Stack (Internally Vented)


is controlled by

TREA 142: Bentonite Receiving Bin 3 Bin Vent

EQUI 289: Primary Crusher Building Belt Conveyor

sends to STRU 158: Primary Crusher Building Stack

SI ID: Description

Relationship type


EQUI 289: Primary Crusher Building Belt Conveyor

is controlled by

TREA 150: Primary Crusher Building Baghouse

EQUI 290: Pneumatic Transport Vent 1

sends to STRU 199: Pneumatic Transport Vent 1 Stack (Internally Vented)


is controlled by

TREA 151: Pneumatic Transport Vent 1 Bin Vent




is controlled by


EQUI 293: Rotary Rail Car Dumper

sends to STRU 148: Rotary Rail Car Dumper Stack

EQUI 293: Rotary Rail Car Dumper

is controlled by

TREA 122: Rotary Rail Car Dumper Baghouse

EQUI 294: 2100 Tonne Stone Bin

sends to STRU 149: 2100 Tonne Stone Bin Stack

EQUI 294: 2100 Tonne Stone Bin

is controlled by

TREA 123: 2100 Tonne Stone Bin Baghouse

EQUI 295: 5500 Tonne Limestone Storage Bin

sends to STRU 150: 5500 Tonne Limestone Storage Bin Stack

EQUI 295: 5500 Tonne Limestone Storage Bin

is controlled by

TREA 124: 5500 Tonne Limestone


SI ID: Description

Relationship type

Related SI ID: Description Storage Bin Bin Vent

EQUI 296: 5500 Tonne Dolomite Storage Bin

sends to STRU 151: 5500 Tonne Dolomite Storage Bin Stack

EQUI 296: 5500 Tonne Dolomite Storage Bin

is controlled by

TREA 125: 5500 Tonne Dolomite Storage Bin Bin Vent

EQUI 297: Train Unloading Conveyor

sends to STRU 152: Train Unloading Conveyor Stack

EQUI 297: Train Unloading Conveyor

is controlled by

TREA 126: Train Unloading Conveyor Baghouse

EQUI 298: Overland Conveyor

sends to STRU 153: Overland Conveyor Stack

EQUI 298: Overland Conveyor

is controlled by

TREA 127: Overland Conveyor Baghouse

EQUI 299: Limestone and Dolomite Grinding Mill

sends to STRU 154: Limestone and Dolomite Grinding Mill Stack

EQUI 299: Limestone and Dolomite Grinding Mill

is controlled by

TREA 128: Limestone and Dolomite Grinding Mill Baghouse

EQUI 300: Pellet Bunker Tripper Conveyor

sends to STRU 196: Pellet Bunker Stack

EQUI 300: Pellet Bunker Tripper Conveyor

is controlled by

TREA 148: Pellet Bunker Tripper Conveyor Baghouse

EQUI 301: Emergency Reclaim Pump

sends to STRU 156: Emergency Reclaim Pump Stack

SI ID: Description

Relationship type


EQUI 302: Emergency Pit Water Pump

sends to STRU 157: Emergency Pit Water Pump Stack


sends to STRU 196: Pellet Bunker Stack


is controlled by

TREA 149: Pellet Bunker Product Conveyor Baghouse

EQUI 304: 55 Tonne Day Bin

sends to STRU 198: 55 Tonne Day Bin Stack (Internally Vented)

EQUI 304: 55 Tonne Day Bin

is controlled by

TREA 154: 55 Tonne Day Bin Bin Vent











SI ID: Description

Relationship type



EQUI 320: Primary Crusher Building Baghouse Leak Detector

EQUI 327: Pellet Bunker Tripper Conveyor Baghouse Leak Detector

EQUI 328: Pellet Bunker Product Conveyor Baghouse Leak Detector

EQUI 329: DRI and Steel Plant DAS

receives from

EQUI 29: DRI Process Gas Heater Stack NOx CEMS


receives from

EQUI 30: DRI Process Gas Heater Stack CO CEMS


receives from



receives from



receives from



receives from

EQUI 62: DRI Depressurization Scrubber Pressure Drop Monitor


receives from

EQUI 63: DRI Depressurization Scrubber Water Flow Rate Monitor


receives from

EQUI 64: DRI Process Gas Heater Stack O2 CEMS


receives from


EQUI 329: DRI and Steel receives EQUI 78:

SI ID: Description

Relationship type


Plant DAS from Vacuum Degasser Flare Flame Detection


receives from

EQUI 89: DRI Flare Flame Detection


receives from

EQUI 90: DRI PTS Depressurization Scrubber Pressure Drop Monitor


receives from

EQUI 91: DRI PTS Depressurization Scrubber Water Flow Rate Monitor


receives from

EQUI 101: DRI Pellet Screening and Handling Wet Scrubber Pressure Drop Monitor


receives from

EQUI 102: DRI Pellet Screening and Handling Wet Scrubber Water Flow Rate Monitor


receives from

EQUI 230: EAF Area Baghouse Leak Detector


receives from

EQUI 238: Oxide Pellet Surge Bin Baghouse Leak Detector


receives from

EQUI 248: Oxide Pellet Silos Baghouse Leak Detector


receives from

EQUI 378: Bauxite Storage Bin Baghouse


SI ID: Description

Relationship type

Related SI ID: Description Pressure Drop Monitor


receives from



receives from





is controlled by



sends to STRU 195: Product Junction House 4 Stack


is controlled by





is controlled by





is controlled by

TREA 134: Coarse Ore Mill Bay Tunnel 2

SI ID: Description

Relationship type

Related SI ID: Description Baghouse




is controlled by

TREA 135: Coarse Ore Mill Bay Tunnel 3 Baghouse


sends to STRU 172: Fine Ore Mill Bay Tunnel 1B Stack (Internally Vented)


is controlled by

TREA 129: Fine Ore Mill Bay Tunnel1B Baghouse




is controlled by

TREA 130: Fine Ore Mill Bay Tunnel 2A Baghouse




is controlled by

TREA 131: Fine Ore Mill Bay Tunnel 2B Baghouse




is controlled by

TREA 132: Fine Ore Mill Bay Tunnel 3A


SI ID: Description

Relationship type

Related SI ID: Description Baghouse




is controlled by

TREA 133: Fine Ore Mill Bay Tunnel 3B Baghouse

EQUI 340: Bentonite Unloading

sends to STRU 63: Bentonite Unloading Stack



TREA 9: Bentonite Unloading Baghouse 1



TREA 153: Bentonite Unloading Baghouse 2




is controlled by





is controlled by


EQUI 343: Secondary Crusher Lines Bin Feed



sends to STRU 84: Secondary

SI ID: Description

Relationship type

Related SI ID: Description Crusher Line 2 Stack

















EQUI 344: Indurating Furnace Waste Gas Multiclone Pressure Drop Monitor

EQUI 347: Pellet Plant Oxide Fines Bin Discharge

sends to STRU 195: Product Junction House 4 Stack

EQUI 347: Pellet Plant Oxide Fines Bin Discharge

is controlled by


EQUI 350: Mixing Conveyor Baghouse Pressure Drop Monitor

EQUI 351: Mercury Control Carbon Bin Baghouse Pressure Drop Monitor



SI ID: Description

Relationship type


Baghouse Pressure Drop Monitor EQUI 353: Bentonite Receiving Bin 1 Bin Vent Pressure Drop Monitor


EQUI 355: Limestone Bin Bin Vent Pressure Drop Monitor

EQUI 356: Organic Binder and Sodium Carbonate Bins Baghouse Pressure Drop Monitor

EQUI 357: Residual Silo Baghouse Pressure Drop Monitor

EQUI 358: Dolomite Bin Bin Vent Pressure Drop Monitor

EQUI 359: Bentonite Bin Bin Vent Pressure Drop Monitor








SI ID: Description

Relationship type


EQUI 367: Rotary Rail Car Dumper Baghouse Pressure Drop Monitor

EQUI 368: 2100 Tonne Stone Bin Baghouse Pressure Drop Monitor

EQUI 369: 5500 Tonne Limestone Storage Bin Bin Vent Pressure Drop Monitor

EQUI 370: 5500 Tonne Dolomite Storage Bin Bin Vent Pressure Drop Monitor

EQUI 371: Train Unloading Conveyor Baghouse Pressure Drop Monitor

EQUI 372: Overland Conveyor Baghouse Pressure Drop Monitor

EQUI 373: Limestone and Dolomite Grinding Mill Baghouse Pressure Drop Monitor

EQUI 374: 55 Tonne Day Bin Bin Vent Pressure Drop Monitor


EQUI 376: Oxide Pellet Loadout

sends to STRU 201: Oxide Pellet Loadout Stack

EQUI 376: Oxide Pellet Loadout

is controlled by

TREA 170: Oxide Pellet Loadout Baghouse

EQUI 377: Oxide Pellet Loadout Baghouse Leak Detector

EQUI 378: Bauxite Storage Bin Baghouse Pressure Drop Monitor

EQUI 379: Indurating Furnace Waste Gas Stack


SI ID: Description

Relationship type


Air Flow Rate Monitor EQUI 380: Indurating Furnace Hood Exhaust Stack Air Flow Rate Monitor



EQUI 383: Alternative Limestone or Dolomite Deliveries

sends to STRU 184: Dolomite Bin Stack (Internally Vented)


sends to STRU 185: Limestone Bin Stack (Internally Vented)



TREA 136: Limestone Bin Bin Vent



TREA 143: Dolomite Bin Bin Vent

EQUI 384: Alternative Additive Deliveries

sends to STRU 181: Storage Bin 1 Stack (Internally Vented)


sends to STRU 182: Storage Bin 2 Stack (Internally Vented)


sends to STRU 183: Bentonite Bin Stack (Internally Vented)



TREA 144: Bentonite Bin Bin Vent




SI ID: Description

Relationship type





FUGI 2: DRI Cooling Tower

is controlled by

TREA 75: DRI Cooling Tower Mist Eliminator

FUGI 4: EAF Indirect Cooling Tower

is controlled by

TREA 79: EAF Indirect Cooling Tower Mist Eliminator

FUGI 5: Non‐Metallics Loadout

is controlled by

TREA 117: Non‐metallics Loadout Dust Suppression

FUGI 6: Paved Road Emissions

is controlled by

TREA 82: Paved Roads Dust Suppression

FUGI 11: DRI Railcar Loading

FUGI 13: Out‐of‐pit Haul Road Emissions

is controlled by

TREA 86: Out‐of‐pit Haul Roads Dust Suppression

FUGI 16: Crude Ore Loadout

FUGI 17: Non‐Metallics Unloading to Off‐Site Sale or On‐Site Stockpile

FUGI 19: DRI Stockpile Reclaim To Melt Shop

FUGI 20: Service Road Emissions

is controlled by

TREA 87: Service Roads Dust Suppression

FUGI 21: Direct Cooling Tower

is controlled by

TREA 84: Direct Cooling Tower Mist Eliminator

FUGI 22: Laminar Cooling Tower

is controlled by

TREA 85: Laminar Cooling Tower Mist Eliminator

FUGI 24: Grading at Tailings Basin

FUGI 25: Dozer Activity at Tailings Basin

FUGI 26: Tailings Basin


SI ID: Description

Relationship type


Wind Erosion FUGI 27: Oxide Product Stockpile Wind Erosion

is controlled by

TREA 91: Oxide Product Stockpile Wind Erosion Dust Suppression

FUGI 28: Overburden/Waste Rock Bulldozer

FUGI 29: Overburden/Waste Rock Area Wind Erosion

FUGI 30: Drilling FUGI 31: Overburden Loadout

FUGI 32: Overburden Unloading (Truck)

FUGI 33: Waste Rock Loadout

FUGI 34: Waste Rock Unloading (Truck)

FUGI 35: Drop onto Cobber Rejects Pile

FUGI 36: Cobber Rejects Pile Wind Erosion

FUGI 37: Cobber Rejects Pile Loadout

FUGI 38: Cobber Rejects Unloading (Truck)

FUGI 39: Cobber Rejects Stockpile Wind Erosion

FUGI 40: 120K ton Concentrate Stockpile Loading

is controlled by

TREA 88: 120k Ton Concentrate Stockpile Loading Dust Suppression

FUGI 41: 120K ton Concentrate Stockpile Wind Erosion

is controlled by

TREA 89: 120k Ton Concentrate Stockpile Wind Erosion Dust Suppression

FUGI 42: 120K ton Concentrate Stockpile Loadout

is controlled by

TREA 90: 120k Ton Concentrate

SI ID: Description

Relationship type

Related SI ID: Description Stockpile Loadout Dust Suppression

FUGI 43: DRI Stockpile Stacking Conveyor

FUGI 44: DRI Stockpile Wind Erosion

FUGI 46: DRI Plant Oxide Fines Bin Discharge

FUGI 47: Oxide Fines Return to Regrind Mill

FUGI 48: DRI Drop into Remet Bunker

FUGI 49: DRI Remet Bunker Wind Erosion

FUGI 50: DRI Remet Return to DRI Reclaim Hopper

FUGI 51: Oversize CDRI Drop Into Bunker

FUGI 52: Oversize CDRI Bunker Wind Erosion

FUGI 53: Oversize CDRI To EAF By Scrap Bucket

FUGI 54: CDRI Drop into EAF Feed Collection Chute

FUGI 55: Lump Lime/Carbon Unloading

FUGI 56: Lime/Carbon Bucket Elevator

FUGI 57: Lime/Carbon Tripper Conveyor Drop

FUGI 58: Slag Dumping is controlled by

TREA 94: Slag Dumping Dust Suppression

FUGI 59: Digging Pits/Breaking Slag

is controlled by

TREA 95: Digging Pits/Breaking Slag Dust Suppression

FUGI 60: Grizzly Stockpile Loading

is controlled by

TREA 96: Grizzly Stockpile Loading Dust Suppression


SI ID: Description

Relationship type


FUGI 61: Grizzly Stockpile Wind Erosion

is controlled by

TREA 97: Grizzly Stockpile Wind Erosion Dust Suppression

FUGI 62: Grizzly Stockpile Loadout

is controlled by

TREA 98: Grizzly Stockpile Loadout Dust Suppression

FUGI 63: Grizzly Loading FUGI 64: Grizzly Oversize to Slag Dumping

is controlled by

TREA 99: Grizzly Oversize to Slag Dumping Dust Suppression

FUGI 65: Grizzly/Feeder is controlled by

TREA 100: Grizzly/Feeder Dust Suppression

FUGI 66: Slag Transfer Conveyor

is controlled by

TREA 101: Slag Transfer Conveyor Dust Suppression

FUGI 67: Slag Screen is controlled by

TREA 102: Slag Screen Dust Suppression

FUGI 68: Screened Slag Conveyor

is controlled by

TREA 103: Screened Slag Conveyor Dust Suppression

FUGI 69: Screened Slag Cobber

is controlled by

TREA 104: Screened Slag Cobber Dust Suppression

FUGI 70: Non‐Metallics Stacker 1

is controlled by

TREA 105: Non‐metallics Stacker 1 Dust Suppression

FUGI 71: Non‐Metallics Stacker 2

is controlled by

TREA 106: Non‐metallics Stacker 2 Dust Suppression

FUGI 72: Metallics Stacker 1

is controlled by

TREA 107: Metallics Stacker 1 Dust Suppression

SI ID: Description

Relationship type


FUGI 73: Metallics Stacker 2

is controlled by

TREA 108: Metallics Stacker 2 Dust Suppression

FUGI 74: Slag Crusher is controlled by

TREA

Intent to Reissue Air Emisson Permit to Mesabi …...Draft Air Individual Permit Part 70 Reissuance...

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Transcript of Intent to Reissue Air Emisson Permit to Mesabi …...Draft Air Individual Permit Part 70 Reissuance...