TDD (for hearing and speech impaired only):  (651) 282‐5332

Printed on recycled paper containing at least 10% fibers from paper recycled by consumers

DRAFT/PROPOSED

AIR EMISSION PERMIT NO. 13700005 ‐ 006

Major Amendment  

IS ISSUED TO

US Steel Corp

US STEEL CORP ‐ MINNTAC

8819 Old Highway 169

Mountain Iron, St. Louis County, MN  55768     

The emission units, control equipment and emission stacks at the stationary source authorized in this

permit amendment are as described in the Permit Applications Table.

This permit amendment supersedes Air Emission Permit No. 13700005‐004 and authorizes the Permittee

to operate and construct the stationary source at the address listed above unless otherwise noted in

Table A. 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 State Implementation Plan (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.

Permit Type: Federal; Pt 70/Major for NSR;  

Operating Permit Issue Date: <issue date>  

Expiration Date: 02/26/2008 – All Title I Conditions do not expire.

* The Permittee may continue to operate this facility after the expiration date of the permit, per the

provision under Minn. R. 7007.0450, subp. 3. (Title V Reissuance Application was received 08/22/2007.)

    

    Don Smith, P.E., Manager

    Air Quality Permits Section

    Industrial Division

    

for   John Linc Stine

    Commissioner

    Minnesota Pollution Control Agency
Permit Applications Table

Permit Type Application Date Permit Action

Total Facility Operating Permit <‐Reissuance> 01/15/1995 001

Major Amendment MPCA initiated – 05/16/2003 002

Major Amendment; Administrative Amendment 10/23/2003; 03/15/2004 003

Major Amendment Not Issued 004

Major Amendment 09/30/1991 005
TABLE OF CONTENTS

Notice to the Permittee

Permit Shield

Facility Description

Amendment Description

Table A: Limits and Other Requirements

Table B: Submittals

Appendices

1. Types of Biomass Authorized for the Rotary Kiln Burner at Minntac

2. Visible Emission Checklists (for Permit No. 13700005‐001)

3. Minntac Modeling Parameters (for Permit No. 13700005‐004)
NOTICE TO THE PERMITTEE:

Your stationary source may be subject to the requirements of the Minnesota Pollution Control Agency’s

(MPCA) solid waste, hazardous waste, and water quality programs. If you wish to obtain information on

these programs, including information on obtaining any required permits, please contact the MPCA

general information number at:

Metro Area 651‐296‐6300

    

Outside Metro Area 1‐800‐657‐3864

    

TTY 651‐282‐5332

The rules governing these programs are contained in Minn. R. chs. 7000‐7105. Written questions may be

sent to: Minnesota Pollution Control Agency, 520 Lafayette Road North, St. Paul, Minnesota 55155‐4194.

Questions about this air emission permit or about air quality requirements can also be directed to the

telephone numbers and address listed above.

PERMIT SHIELD:

Subject to the limitations in Minn. R. 7007.1800, compliance with the conditions of this permit shall be

deemed compliance with the specific provision of the applicable requirement identified in the permit as

the basis of each condition. Subject to the limitations of Minn. R. 7007.1800 and 7017.0100, subp. 2,

notwithstanding the conditions of this permit specifying compliance practices for applicable

requirements, any person (including the Permittee) may also use other credible evidence to establish

compliance or noncompliance with applicable requirements.
FACILITY DESCRIPTION:

The Permittee owns and operates a taconite mine and processing facility, known as Minntac, at County

Highway 102, on the Mesabi Range north of the city of Mountain Iron, St. Louis County, Minnesota.

Taconite is a rock bearing from 15 to 30 percent magnetic iron particles (magnetite).  The iron ore is

mined in an open pit, and reduced in size by a series of crushers until it has a powdery consistency.  Iron

oxide concentrate is separated magnetically, while the remaining portion of the mined ore (tailings) is

sent to a tailings disposal basin.  Limestone and/or dolomite (fluxstone) and bentonite (binder) are

added to the concentrate and the mixture is formed into round “green balls (pellets)” in a balling drum.  

The green balls are heat hardened in an indurating process (agglomerator or grate‐kiln) line, which

consists of a traveling grate, a rotary kiln, and a horizontal rotary hearth (commonly called annular

cooler).  Finished taconite pellets are stored for transport to blast iron furnaces.  While the main product

of the Minntac facility is fluxed pellets which are used in blast furnaces to make molten iron, other

products such as iron ore concentrate, blast furnace trim, and railroad ballast are made for special

customers.

The Minntac facility was built in three successive stages or steps.  The first taconite pellets were

produced by the Step I facility in 1967.  When Step II (1972) and Step III (1978) were added, the facility’s

pellet‐making capacity was tripled.

AMENDMENT DESCRIPTION:

This Major Amendment permit action authorizes the replacement of the existing main kiln burners with

Low Nitrogen Oxides (NOX) Main Burners on the facility’s induration lines 4 and 5 (CE 181 with SV 118

and CE 182 with SV 127; respectively).This project will reduce NOX emissions from baseline emission

rates. Remaining pollutants will remain at previously permitted rates.

This permit action also removes language from the Total Facility level listed under “F. Retroactive

Prevention of Significant Deterioration Program (PSD) Permitting Requirements – Tasks, Reports and

CEMS related to language requesting a Computational Fluid Dynamics (CFD) modeling report and

installation of Low NOX Burners at the traveling grate preheat zones of the Agglomerator Lines 3 ‐7.

Minntac completed conditions related to CFD modeling as well as installed the traveling grate preheat

Low NOX burners in 2009.   
TABLE A: LIMITS AND OTHER REQUIREMENTS

US Steel Corp - Minntac

13700005 - 006

Facility Name:

Permit Number:

A-1 06/05/13

Table A contains limits and other requirements with which your facility must comply. The limits are located in the first column of

the table (What To do). The limits can be emission limits or operational limits. This column also contains the actions that you must

take and the records you must keep to show that you are complying with the limits. The second column of Table A (Why to do it)

lists the regulatory basis for these limits. Appendices included as conditions of your permit are listed in Table A under total facility

requirements.

Subject Item: Total Facility

What to do Why to do it

A. OPERATIONAL REQUIREMENTS hdr

The Permittee shall comply with National Primary and Secondary Ambient Air

Quality Standards, 40 CFR pt. 50, and the Minnesota Ambient Air Quality

Standards, Minn. R. 7009.0010 to 7009.0080. Compliance shall be demonstrated

upon written request by the MPCA.

40 CFR pt. 50; Minn. Stat. Section 116.07, subds. 4a &

9; Minn. R. 7007.0100, subp. 7(A), 7(L), & 7(M); Minn.

R. 7007.0800, subps. 1, 2 & 4; Minn. R.

7009.0010-7009.0080

The Permittee shall submit limits and other conditions, if necessary, to be

incorporated into an enforceable document by: the 1-hour SO2 NAAQS attainment

date established by EPA; the Regional Haze State Implementation Plan Revision

date which is currently, 2018; or as required by any other applicable federal law,

whichever is earliest.

40 CFR pt. 50; Minn. Stat. Section 116.07, subds. 4a &

9; Minn. R. 7007.0100, subp. 7(A), 7(L), & 7(M); Minn.

R. 7007.0800, subps. 1, 2 & 4; Minn. R.

7009.0010-7009.0080

The Permittee shall submit limits and other conditions, if necessary, to be

incorporated into an enforceable document by: the 1-hour NO2 NAAQS attainment

date established by EPA; the Regional Haze State Implementation Plan Revision

date which is currently, 2018; or as required by any other applicable federal law,

whichever is earliest.

40 CFR pt. 50; Minn. Stat. Section 116.07, subds. 4a &

9; Minn. R. 7007.0100, subp. 7(A), 7(L), & 7(M); Minn.

R. 7007.0800, subps. 1, 2 & 4; Minn. R.

7009.0010-7009.0080

Fugitive Emissions: Do not cause or permit the handling, use, transporting, or

storage of any material in a manner which may allow avoidable amounts of

particulate matter to become airborne. Comply with all other requirements listed in

Minn. R. 7011.0150.

Minn. R. 7011.0150

Comply with Fugitive Emission Control Plan: The Permittee shall follow the actions

and record keeping specified in the control plan. The plan will include a statement

of objectives, listing and daily observation of major fugitive emission sources,

operating and control measures, dust suppressant application description,

corrective actions, training and records. The plan may be amended by the

Permittee with the Commissioner's approval. If the Commissioner determines the

Permittee is out of compliance with Minn. R. 7011.0150 or the fugitive control plan,

then the Permittee may be required to amend the control plan and/or to install and

operate particulate matter ambient monitors as requested by the Commissioner.

Minn. Stat. Section 116.07, subd. 4a; Minn. R.

7007.0800, subp. 2

Comply with the O & M Plan: Follow the actions and recordkeeping specified in the

O & M plan. The plan may be amended by the Commissioners written approval.

Minn. R. 7007.0800, subp. 14 and Minn. R. 7007.0800,

subp. 16(J)

Noise: The Permittee shall comply with the noise standards set forth in Minn. R.

7030.0010 to 7030.0080 at all times during the operation of any emission units.

This is a state only requirement and is not enforceable by the EPA Administrator or

citizens under the Clean Air Act.

Minn. R. 7030.0010 - 7030.0080

Air Pollution Control Equipment: Operate all pollution control equipment whenever

the corresponding process equipment and emission units are operated, unless

otherwise noted in Table A.

Minn. R. 7007.0800, subp. 2; Minn. R. 7007.0800,

subp. 16(J)

B. PERFORMANCE TESTING REQUIREMENTS hdr

Performance Testing: Conduct all performance tests in accordance with Minn. R.

ch. 7017 unless otherwise noted in Tables A, B, and/or C.

Minn. R. ch. 7017

Limits set as a result of a performance test (conducted before or after permit

issuance) apply until superseded as specified by Minn. R. 7017.2025 following

formal review of a subsequent performance test on the same unit.

Minn. R. 7017.2025

C. MONITORING REQUIREMENTS hdr

Monitoring Equipment Calibration: Annually calibrate all required monitoring

equipment (any requirements applying to continuous emission monitors are listed

separately in this permit - Subject Item: Total Facility, Section F; Subject Items MR1

through MR5).

Minn. R. 7007.0800, subp. 4(D)

Monitoring Equipment: Install or make needed repairs to monitoring equipment

within 180 days of issuance of the permit if monitoring equipment is not installed

and operational on the date the permit is issued.

Minn. R. 7007.0800, subp. 4(D)

Monitoring Equipment Debugging, Troubleshooting, and Establishment of

Parameter Ranges: Complete within 180 days of installation or of completion of

needed repair of all monitoring equipment, including the air pollution control

equipment operating at the time of Permit Issuance.

Minn. R. 7007.0800, subp. 4(D)
TABLE A: LIMITS AND OTHER REQUIREMENTS

US Steel Corp - Minntac

13700005 - 006

Facility Name:

Permit Number:

A-2 06/05/13

Operation of Monitoring Equipment: Unless otherwise noted in Tables A, B, and/or

C, monitoring a process or control equipment connected to that process is not

necessary during periods when the process is shutdown, or during checks of the

monitoring systems, such as calibration checks and zero and span adjustments. If

monitoring records are required, they should reflect any such periods of process

shutdown or checks of the monitoring system.

Minn. R. 7007.0800, subp. 4(D)

Visible Emissions Check: The Permittee shall check visible emissions from the 26

selected stacks/vents, which are specified else where in this permit, once daily

when in operation during daylight hours. A form meeting the requirements of

Appendix B shall be used to indicate whether process or control equipment

requires attention. In the event the Permittee makes a finding that attention is

required, the Permittee shall investigate the process and control equipment

performance and implement appropriate corrective action, if necessary.

Upon approval of the O&M Plan, the Permittee shall check visible emissions from

{SVs} once daily when in operation during daylight hours. The Permittee shall used

the visible emissions checklists in the O&M Plan as a means to indicate when

appropriate corrective actions in the O&M Plan should be taken.

Minn. R. 7007.0800, subp. 4(D); Minn. R. 7007.0800,

subp. 14; Minn. R. 7007.0800, subp. 16(J)

Fugitive Dust Observations: Prior to the approval of the Fugitive Control Plan, the

Permittee shall observe fugitive dust sources {FS} once daily during daylight hours.

In the event the Permittee makes a finding that attention to fugitive dust sources is

required, the Permittee shall investigate the fugitive dust sources and implement

corrective action, if necessary. For unpaved haul roads, the Permittee may use the

existing Unpaved Haul Road Fugitive Control Plan and may submit this plan for

approval as part of the overall fugitive control plan.

Upon approval of the Fugitive Control Plan, the Permittee shall observe fugitive

dust sources {FS} once daily during daylight hours in accordance with the approved

plan.

Minn. R. 7007.0800, subp. 4(D); Minn. R. 7007.0800,

subp. 14; Minn. R. 7007.0800, subp. 16(J)

Visible Emissions Training: The Permittee shall (1) ensure that one plant employee

obtain an initial EPA Method 9 certification and be recertified every three years or

(2) employ a similarly certified contractor. This person will train other plant

employees to perform the daily visible emissions check as detailed in the O&M

Plan and Fugitive Control Plan.

Minn. R. 7007.0800, subp. 4(D); Minn. R. 7007.0800,

subp. 14; Minn. R. 7007.0800, subp. 16(J)

D. RECORD KEEPING REQUIREMENTS hdr

Recordkeeping: Maintain records describing any insignificant modifications (as

required by Minn. R. 7007. 1250, subp. 3) or changes contravening permit terms

(as required by Minn. R. 7007.1350 subp. 2), including records of the emissions

resulting from those changes.

Minn. R. 7007. 0800, subp. 5(B)

Record keeping: Retain all records at the stationary source for a period of five (5)

years from the date of monitoring, sample, measurement, or report. Records which

must be retained at this location include all calibration and maintenance records, all

original recordings for continuous monitoring instrumentation, and copies of all

reports required by the permit. Records must conform to the requirements listed in

Minn. R. 7007.0800, subp. 5(A). Computerized formats can be used, provided that

the Permittee maintains reliable backup for data retrieval.

Minn. R. 7007.0800, subp. 5(C)

Contractors: The Permittee shall retain records on site of all contractors that are

allowed on site that include any crushers, screens and conveyors. The Permittee

shall also retain records on site of all contractors whose operations would require

an Air Emission Permit from the MPCA. The records shall include the contractor's

company name, MPCA air emission permit number, short description of activities

undertaken by the contractor, estimate of emissions or materials handled and the

dates the contractor was on site. The record shall be updated at least monthly.

The Permittee shall evaluate if the activities of any contractor required NSR

permitting prior to the contractor performing such activities. If a contractor has its

own permit, but it is determined that the contractor is under the common control of

the taconite plant then the contractor's permit does not shield the taconite plant or

the contractor from the NSR & Part 70 modification regulations or enforcement

actions.

Minn. R. 7007.0800, subp. 2

E. REPORTING REQUIREMENTS hdr

Notification of Deviations Endangering Human Health or the Environment: As soon

as possible after discovery, notify the Commissioner or the state duty officer, either

orally or by facsimile, of any deviation from permit conditions which could endanger

human health or the environment.

Minn. R. 7019.1000, subp. 1
TABLE A: LIMITS AND OTHER REQUIREMENTS

US Steel Corp - Minntac

13700005 - 006

Facility Name:

Permit Number:

A-3 06/05/13

Notification of Deviations Endangering Human Health or the Environment Report:

Within 2 working days of discovery, notify the Commissioner in writing of any

deviation from permit conditions which could endanger human health or the

environment. Include the following information in this written description:

1. the cause of the deviation;

2. the exact dates of the period of the deviation, if the deviation has been corrected;

3. whether or not the deviation has been corrected;

4. the anticipated time by which the deviation is expected to be corrected, if not yet

corrected; and

5. steps taken or planned to reduce, eliminate, and prevent reoccurrence of the

deviation.

Minn. R. 7019.1000, subp. 1

Breakdown Notifications: Notify the Commissioner within 24 hours of a breakdown

of more than one hour duration of any control equipment or process equipment if

the breakdown causes any increase in the emissions of any regulated air pollutant.

The 24-hour time period starts when the breakdown was discovered or reasonably

should have been discovered by the owner or operator. However, notification is not

required in the circumstances outlined in Items A, B and C of Minn. R. 7019.1000,

subp. 2.

At the time of notification or as soon as possible thereafter, the owner or operator

shall inform the Commissioner of the cause of the breakdown and the estimated

duration. The owner or operator shall notify the Commissioner when the

breakdown is over.

Minn. R. 7019.1000, subp. 2

Shutdown Notifications: Notify the Commissioner at least 24 hours in advance of a

planned shutdown of any control equipment or process equipment if the shutdown

would cause any increase in the emissions of any regulated air pollutant. If the

owner or operator does not have advance knowledge of the shutdown, notification

shall be made to the Commissioner as soon as possible after the shutdown.

However, notification is not required in the circumstances outlined in Items A, B

and C of Minn. R. 7019.1000, subp. 3.

At the time of notification, the owner or operator shall inform the Commissioner of

the cause of the shutdown and the estimated duration. The owner or operator shall

notify the Commissioner when the shutdown is over.

Minn. R. 7019.1000, subp. 3

Emission Fees: due 60 days after receipt of an MPCA bill. Minn. R. 7002.0005 through Minn. R. 7002.0095

F. Retroactive PSD Permitting Requirements - Tasks, Reports and CEMS (Table A

under Subject Item: MR 001 through MR 005, and Table B have additional CEMS

requirements)

hdr

The Permittee shall commence pilot testing of selected NOx control technologies,

upon receipt of written MPCA approval of the selection and the test schedule and

receipt of permit(s) as needed. The Permittee shall collect data to be used for

evaluation of control technology success. Pilot tests shall be completed by

12/31/2009, or as outlined in MPCA approved schedule, whichever is later.

MPCA will evaluate the control technology using the following criteria at a minimum:

 1. technical feasibility or impact to pellet quality;

 2. significant NOx reduction;

 3. cross media impacts;

 4. multi-pollutant co-control benefits;

 5. energy efficiency or consumption impact; and

 6. economic feasibility.

Title I conditions: to mitigate adverse impacts on Class

I areas visibility from pellet induration; 40 CFR 52.21

(p); Minn. R. 7007.3000

No more than 60 days after pilot test completion, submit Pilot Test Results of NOx

control technologies for MPCA's approval. The Pilot Test Results submittal shall

include, at a minimum, a technical description of each control technology tested,

and a summary of major physical and chemical data obtained that are important for

deciding whether or not the technology should be demonstrated. With the Pilot

Test Results, the Permittee shall propose one control technology for full scale

demonstration on one Agglomerator line and shall rank the other control

technologies that have been pilot tested for potential demonstration.

Title I conditions: to mitigate adverse impacts on Class

I areas visibility from pellet induration; 40 CFR 52.21

(p); Minn. R. 7007.3000

The Permittee shall submit a schedule of equipment installation and anticipated

startup of the full - scale demonstration on Line 4 (EU 261) Line 5 (EU 282) within

60 days of Permit Issuance. { This is a reminder; the requirement can also be found

in Table B. }

Title I conditions: to mitigate adverse impacts on Class

I areas visibility from pellet induration; 40 CFR 52.21

(p); Minn. R. 7007.3000
TABLE A: LIMITS AND OTHER REQUIREMENTS

US Steel Corp - Minntac

13700005 - 006

Facility Name:

Permit Number:

A-4 06/05/13

The Permittee shall commence full scale demonstration of the selected NOx control

technology at one Agglomerator line, upon receipt of MPCA permit(s). This

includes, but is not limited to the following tasks: 1) compiling emission monitoring

and stack testing data that were generated before installing the control technology;

2) installing and operating the control technology; 3) monitoring emissions and

conducting stack testing with the control technology operating; 4) collect capital and

operating cost data. The goal is to have the demonstration completed by 2/1/2011.

A goal is a target for the Permittee but is not intended to be an enforceable permit

condition.

Title I conditions: to mitigate adverse impacts on Class

I areas visibility from pellet induration; 40 CFR 52.21

(p); Minn. R. 7007.3000

Within 60 days following completion of the full scale demonstration, submit a Full

Scale Demonstration Report for MPCA approval. At a minimum, the report shall

include a summary of: 1) mass rate (lb/hr) and concentration (ppmv, dry) of NOx,

SO2, CO, and mercury entering and exiting each demonstrated control technology;

2) control efficiencies and emission factors in lb/dry, long ton of pellets made and in

lb/million Btu total heat input for NOx, SO2, CO, and mercury, based on statistical

analyses of hourly continuous emission and process monitoring results and, if

necessary, additional stack testing results; and 3) cross-media quantification for

scrubbing and/or plant process water.

(To be continued in the next box)

Title I conditions: to mitigate adverse impacts on Class

I areas visibility from pellet induration; 40 CFR 52.21

(p); Minn. R. 7007.3000

(Continued from the box above)

MPCA will evaluate the full scale technology demonstration using the criteria

specified to evaluate the pilot testing at a minimum. The goal is to have NOx

control technology installation completed for all operating lines by 2/1/2014, or as

outlined in MPCA approved schedule, whichever is later. A goal is a target for the

Permittee but is not intended to be an enforceable permit condition.

Title I conditions: to mitigate adverse impacts on Class

I areas visibility from pellet induration; 40 CFR 52.21

(p); Minn. R. 7007.3000

If the MPCA determines that the demonstrated control technology should not be

installed on the remaining lines in operation, the Permittee shall commence

demonstration of the next-ranked control technology option that was submitted with

the Pilot Test Results and shall submit a Full Scale Demonstration report as

required above. The Permittee shall continue this process until either the MPCA

approves a control technology for installation on the remaining lines in operation or

all of the ranked technology options have been exhausted. If all of the ranked

technology options are exhausted and the MPCA has not approved a technology

for installation on the remaining lines in operation, the Permittee shall propose a

schedule for completion of a Supplemental Engineering Analysis that at a minimum

identifies any previously unidentified NOx control technologies, NOx reduction

strategies or then current industry practices. (To be continued in the next box)

Title I conditions: to mitigate adverse impacts on Class

I areas visibility from pellet induration; 40 CFR 52.21

(p); Minn. R. 7007.3000

(Continued from the box above) The specific provisions of the Supplemental

Engineering Analysis shall be incorporated into the permit through the submission

of a major permit amendment.

The Supplemental Engineering Analysis shall be submitted to the MPCA no later

than 60 days after written notification from the MPCA that none of the pilot tested

technologies are approvable for installation on all lines in operation. The

Supplemental Engineering Analysis will identify new potentially feasible control

technologies, based on previously identified criteria, and propose a schedule, for

MPCA approval, of supplemental pilot tests, pilot test reports, installation of

technology for a full scale demonstration, demonstration project reports, and full

installation of control technology at remaining operating Agglomerator lines.

(To be continued in the next box)

Title I conditions: to mitigate adverse impacts on Class

I areas visibility from pellet induration; 40 CFR 52.21

(p); Minn. R. 7007.3000

(Continued from the box above)

If the Supplemental Engineering Analysis concludes that no technologies are

currently feasible, based on previously identified criteria, and MPCA approves,

another Supplemental Engineering Analysis will be submitted by the Permittee

within 1095 days of last Supplement Engineering Analysis submittal, with all of the

procedures that the MPCA has previously approved, with the exception that the

Permittee need not obtain a major permit amendment to implement additional

Supplemental Engineering Analyses. The Permittee shall continue to submit

Supplemental Engineering Analyses every 1095 days until NOx control

technologies have been installed on all operating Agglomerator lines.

(To be continued in the next box)

Title I conditions: to mitigate adverse impacts on Class

I areas visibility from pellet induration; 40 CFR 52.21

(p); Minn. R. 7007.3000
TABLE A: LIMITS AND OTHER REQUIREMENTS

US Steel Corp - Minntac

13700005 - 006

Facility Name:

Permit Number:

A-5 06/05/13

(Continued from the box above)

If, after initial engineering analyses, pilot testing, demonstration projects, and an

initial Supplemental Engineering Analysis, no control technologies are approved for

full installation and significant NOx emission reductions have been achieved

without full installation of control technologies on all operating Agglomerator lines,

the Permittee may submit a request, in the form of a major permit amendment, to

cease trials of NOx emissions control technologies.

(End of the requirement that takes 4 boxes to hold)

Title I conditions: to mitigate adverse impacts on Class

I areas visibility from pellet induration; 40 CFR 52.21

(p); Minn. R. 7007.3000

If the MPCA approves a demonstrated control technology for installation at the

remaining lines in operation, the Permittee shall commence installation upon

receipt of MPCA permits(s). If a non-operating line recommences operation, the

Permittee shall install the approved NOx control technology before the line resumes

operation. Installation includes, but is not limited to: 1) installing and operating the

control technology; 2) monitoring emissions and conducting stack testing with the

control technology operating and setting emission limits; and 3) collect capital and

operating cost data.

Title I conditions: to mitigate adverse impacts on Class

I areas visibility from pellet induration; 40 CFR 52.21

(p); Minn. R. 7007.3000

Within 60 days after completion of full scale installation, submit a Final NOx

Reduction Report for MPCA approval to document the NOx reduction process and

major findings. At a minimum, the Final Report shall include a summary of: 1)

demonstrated control efficiency of the control technology installed at each line and

the emission factors (lb/LT pellets; lb/million Btu of total heat input) for each

pollutant determined during the full scale demonstration; 2) associated cross-media

impacts assessed and mitigation measures; 3) annualized cost of NOx control for

the control technology installed (of captial cost for equipment and operation cost)

per ton of NOx removed; 4) Low NOx burners, CFD work, the benefit of CEMS

application, and other measures taken that contribute to reduction in induration

NOx formation.

Title I conditions: to mitigate adverse impacts on Class

I areas visibility from pellet induration; 40 CFR 52.21

(p); Minn. R. 7007.3000

Emission Monitoring: The owner or operator shall use a CEMS to measure mass

emissions of NOx and SO2 from each of the following stacks: SV 103 (GP 009),

SV 118 & SV 127 (GP 010), and SV 144 & SV 151 (GP 011). Monitoring

requirements are located under the associated subject items (MR 001 through MR

005).

Title I Conditions: to monitor NOx mitigation for Class I

visibility impacts from pellet induration; 40 CFR 52.21

(p); Minn. R. 7007.3000; Minn. R. 7017.1006

Continuous Operation: CEMS must be operated and data recorded during all

periods of emission unit operation including periods of emission unit start-up,

shutdown, or malfunction except for periods of acceptable monitor downtime. This

requirement applies whether or not a numerical emission limit applies during these

periods. A CEMS must not be bypassed except in emergencies where failure to

bypass would endanger human health, safety, or plant equipment.

Title I Conditions: to monitor NOx mitigation for Class I

visibility impacts from pellet induration; 40 CFR 52.21

(p); Minn. R. 7007.3000; Minn. R. 7017.1090.

Monitoring Data: All data points collected by a CEMS shall be used to calculate

individual hourly emssion averages unless another applicable requirement or

compliance document requires more frequent averaging. Each hourly average

starts at the beginning of the hour and ends at the beginning of the following hour.

In order for an hour of data to be considered, it must contain the following minimum

number of data points: a) four data points, equally spaced, if the emission unit

operated during the entire hour; b) two data points, at least 15 minutes apart,

during periods of monitor calibration or routine maintenance; and c) one data point,

if the emission unit operated for 15 minutes or less during the hour.

Title I Conditions: to monitor NOx mitigation for Class I

visibility impacts from pellet induration; 40 CFR 52.21

(p); Minn. R. 7007.3000; Minn. R. 7017.1160, subp. 1

and 2.

QA Plan: Develop and implement a written quality assurance plan that covers each

CEMS. The plan shall be on site and available for inspection within 30 days after

monitor certification. The plan shall contain all of the information required by 40

CFR 60, Appendix F, section 3. The plan shall include the manufacturer's spare

parts list for each CEMS and require that those parts be kept at the facility unless

the Commissioner gives written approval to exclude specific spare parts from the

list.

Title I Conditions: to monitor NOx mitigation for Class I

visibility impacts from pellet induration; 40 CFR 52.21

(p); Minn. R. 7007.3000; Minn. R. 7017.1170, subp. 2.

CEMS Daily Calibration Drift (CD) Test: The CD shall be quantified and recorded

at zero (low-level) and upscale (high-level) gas concentrations at least once daily

according to the procedures listed in Minn. R. 7017.1170, subp. 3 and 40 CFR

60.13(d)(1) for each pollutant concentration, each diluent monitor, and for each

monitor range. The CEMS shall be adjusted whenever the CD exceeds twice the

specification of 40 CFR 60, Appendix B. If no span value is specified in the

applicable requirement or in a compliance document, the Permittee shall use a

span value equivalent to 1.5 times the emission limit. 40 CFR 60, Appendix F,

shall be used to determine out-of-control periods for CEMS. Follow the procedures

in 40 CFR 60, Appendix F.

Title I Conditions: to monitor NOx mitigation for Class I

visibility impacts from pellet induration; 40 CFR 52.21

(p); Minn. R. 7007.3000; Minn. R. 7017.1170, subp. 3.

Relative Accuracy Test Audit (RATA) Notification: due 30 days before CEMS

Relative Accuracy Test Audit (RATA).

Title I Conditions: to monitor NOx mitigation for Class I

visibility impacts from pellet induration; 40 CFR 52.21

(p); Minn. R. 7007.3000; Minn. R. 7017.1180, subp. 2.

G. MISCELLANEOUS hdr
TABLE A: LIMITS AND OTHER REQUIREMENTS

US Steel Corp - Minntac

13700005 - 006

Facility Name:

Permit Number:

A-6 06/05/13

Extension Requests: Except for Title I Conditions, the Permittee may apply for an

Administrative Amendment to extend a deadline in a permit by no more than 120

days, provided the proposed deadline extension meets the requirements of Minn.

R. 7007.1400, subp. 1(H).

Minn. R. 7007.1400, subp. 1(H)

Application for Permit Amendment: If a permit amendment is needed, submit an

application in accordance with the requirements of Minn. R. 7007.1150 through

Minn. R. 7007.1500. Submittal dates vary, depending on the type of amendment

needed.

Minn. R. 7007.1150 through Minn. R. 7007.1500

Inspections: Upon presentation of credentials and other documents as may be

required by law, allow the Agency, or its representative, to enter the Permittee's

premises to have access to and copy any records required by this permit, to inspect

at reasonable times (which include any time the source is operating) any facilities,

equipment, practices or operations, and to sample or monitor any substances or

parameters at any location.

Minn. R. 7007.0800, subp. 9(A)

Circumvention: Do not install or use a device or means that conceals or dilutes

emissions, which would otherwise violate a federal or state air pollution control rule,

without reducing the total amount of pollutant emitted.

Minn. R. 7011.0020

Operation Changes: In any shutdown, breakdown, or deviation the Permittee shall

immediately take all practical steps to modify operations to reduce the emission of

any regulated air pollutant. The Commissioner may require feasible and practical

modifications in the operation to reduce emissions of air pollutants. No emissions

units that have an unreasonable shutdown or breakdown frequency of process or

control equipment shall be permitted to operate.

Minn. R. 7019.1000, subp. 4

The Permittee shall comply with the General Conditions listed in Minn. R.

7007.0800, subp. 16.

Minn. R. 7007.0800, subp. 16
TABLE A: LIMITS AND OTHER REQUIREMENTS

US Steel Corp - Minntac

13700005 - 006

Facility Name:

Permit Number:

A-7 06/05/13

Subject Item: GP 001 Pre-1977 heating boilers

Associated Items: EU 001 SI 104 MMBtu Heating Boiler

EU 002 SI 104 MMBtu Heating Boiler

EU 003 SII 125 MMBtu Heating Boiler

EU 010 24.6 MMBtu Boiler

EU 011 24.6 MMBtu Boiler

SV 001 SI 104 MMBtu Boiler

SV 002 SI 104 MMBtu Boiler

SV 003 SII 125 MMBtu Boiler

SV 010 24.6 MMBtu Boiler

SV 011 24.6 MMBtu Boiler

What to do Why to do it

A. POLLUTANT LIMITS hdr

Total Particulate Matter: less than or equal to 0.6 lbs/million Btu heat input Minn. R. 7011.0510, subp. 1

Sulfur Dioxide: less than or equal to 2.0 lbs/million Btu heat input Minn. R. 7011.0510, subp. 1

Opacity: less than or equal to 20 percent opacity , except for one six-minute period

per hour of not more than 60 percent opacity.

Minn. R. 7011.0510, subp. 2

B. OPERATION REQUIREMENTS hdr

The Permittee shall record the amount of fuel oil burned each month. The

Permittee shall obtain and maintain a fuel supplier certification of the sulfur weight

percent for each shipment of fuel oil. If supplier certification is not available, the

Permittee shall sample the fuel oil from multiple the tank(s) after each delivery but

not more than once each calendar week when multiple deliveries are made. The

Permittee shall analyze the oil sample to determine sulfur content of the fuel oil in

pcercent by weight in accordance with the current ASTM method. The Permittee

shall maintain records of the fuel deliveries and results of the fuel analysis.

Minn. R. 7007.0800, subp. 4(B)
TABLE A: LIMITS AND OTHER REQUIREMENTS

US Steel Corp - Minntac

13700005 - 006

Facility Name:

Permit Number:

A-8 06/05/13

Subject Item: GP 002 Post-1977 heating boilers

Associated Items: EU 004 SIII 153 MMBtu Heating Boiler

EU 005 SIII 153 MMBtu Heating Boiler

SV 004 SIII 153 MMBtu Boiler

SV 005 SIII 153 MMBtu Boiler

What to do Why to do it

A. POLLUTANT LIMITS hdr

Total Particulate Matter: less than or equal to 0.4 lbs/million Btu heat input Minn. R. 7011.0515, subp. 1

Sulfur Dioxide: less than or equal to 2.0 lbs/million Btu heat input Minn. R. 7011.0515, subp. 1

Opacity: less than or equal to 20 percent opacity , except for one six-minute period

per hour of not more than 60 percent opacity.

Minn. R. 7011.0515, subp. 2

B. OPERATION REQUIREMENTS hdr

The Permittee shall record the amount of fuel oil burned each month. The

Permittee shall obtain and maintain a fuel supplier certification of the sulfur weight

percent for each shipment of fuel oil. If supplier certification is not available, the

Permittee shall sample the fuel oil from multiple the tank(s) after each delivery but

not more than once each calendar week when multiple deliveries are made. The

Permittee shall analyze the oil sample to determine sulfur content of the fuel oil in

pcercent by weight in accordance with the current ASTM method. The Permittee

shall maintain records of the fuel deliveries and results of the fuel analysis.

Minn. R. 7007.0800, subp. 4(B)
TABLE A: LIMITS AND OTHER REQUIREMENTS

US Steel Corp - Minntac

13700005 - 006

Facility Name:

Permit Number:

A-9 06/05/13

Subject Item: GP 003 Panfeeders (Pre-1969)

Associated Items: CE 004 Wet Scrubber-High Efficiency w/o Lime

CE 005 Wet Scrubber-High Efficiency w/o Lime

EU 022 Step I Coarse Crusher Pan Feeders

EU 023 Step I Coarse Crusher Pan Feeders

EU 024 Step II Coarse Crusher Pan Feeders

EU 025 Step II Coarse Crusher Pan Feeders

SV 016 Step I Coarse Crusher Pan Feeders

SV 017 Step II Coarse Crusher Pan Feeders

What to do Why to do it

A. POLLUTANT LIMITS hdr

Total Particulate Matter: less than or equal to 0.3 grains/dry standard cubic foot of

exhaust gas unless required to further reduce emissions to comply with the less

stringent limit of either Minn. R. 7011.0730 or Minn. R. 7011.0735; or, alternatively,

as below:

Minn. R. 7011.0710, subp. 1(A)

Total Particulate Matter: greater than or equal to 85 percent collection efficiency ,

provided that the entire emission facility is in compliance with NAAQS and MAAQS,

and the emission facility is located not less than one-forth mile from any residence

or public roadway. (This is an alternative demonstration of compliance to Total

Particulate Matter Limit.)

Minn. R. 7011.0710, subp. 3

Opacity: less than or equal to 20 percent opacity except for one six-minute period

per hour of not more than 60 percent opacity.

Minn. R. 7011.0710, subp. 1(B)

B. CONTROL EQUIPMENT MONITORING hdr

Gas Stream Pressure Drop: Upon installation of monitoring equipment, monitor

and record at least once every day when in operation. Once the operating range is

established it becomes an enforceable part of this permit. A deviation from the

established range shall trigger a corrective action as detailed in the O&M plan.

Minn. R. 7007.0800, subp. 4(D); 14; 16(J)

Liquid Flow Rate: Upon installation of monitoring equipment, monitor and record at

least once every day when in operation. Once the operating range is established it

becomes an enforceable part of this permit. A deviation from the established range

shall trigger a corrective action as detailed in the O&M plan.

Minn. R. 7007.0800, subp. 4(D); 14; 16(J)

C. PERFORMANCE TESTING REQUIREMENTS hdr

Initial Performance Test: due 730 days after 02/26/2003 on one stack to measure

PM emission.

Minn. R. 7017.2020, subp. 1

Performance Test: due before end of each 60 months following Initial Performance

Test on one stack that was not tested in the previous 60-month period to measure

PM emission.

Minn. R. 7017.2020, subp. 1

Performance Test Pre-test Meeting: due 7 days before Performance Test Minn. R. 7017.2030, subp. 4
TABLE A: LIMITS AND OTHER REQUIREMENTS

US Steel Corp - Minntac

13700005 - 006

Facility Name:

Permit Number:

A-10 06/05/13

Subject Item: GP 004 Zinc furnaces & miscellaneous ovens

Associated Items: EU 028 Zinc Melt Furnace

EU 031 Zinc Melt Furnace

EU 032 Zinc Melt Furnace

EU 142 Zinc Melt Furnace

EU 143 Zinc Melt Furnace

EU 389 Electric Shop Curing Oven (new)

EU 390 Burnout Oven

SV 019 Zinc Melt Furnace

SV 020 Zinc Melt Furnace

SV 086 Zinc Melt Furnace

SV 189 Electric Shop Curing Oven

SV 190 Burnout Oven

What to do Why to do it

A. POLLUTANT LIMITS hdr

Total Particulate Matter: less than or equal to 0.3 grains/dry standard cubic foot of

exhaust gas unless required to further reduce emissions to comply with the less

stringent limit of either Minn. R. 7011.0730 or Minn. R. 7011.0735.

Minn. R. 7011.0610, subp. 1(A)(1)

Sulfur Dioxide: less than or equal to 2 lbs/million Btu heat input Minn. R. 7011.0610, subp. 2(B)(1)

Opacity: less than or equal to 20 percent opacity , except for one six-minute period

per hour of not more than 60 percent opacity.

Minn. R. 7011.0610, subp. 1(A)(2)

B. OPERATION REQUIREMENTS hdr

The Permittee shall record the amount of fuel oil burned each month. The

Permittee shall obtain and maintain a fuel supplier certification of the sulfur weight

percent for each shipment of fuel oil. If supplier certification is not available, the

Permittee shall sample the fuel oil from multiple the tank(s) after each delivery but

not more than once each calendar week when multiple deliveries are made. The

Permittee shall analyze the oil sample to determine sulfur content of the fuel oil in

pcercent by weight in accordance with the current ASTM method. The Permittee

shall maintain records of the fuel deliveries and results of the fuel analysis.

Minn. R. 7007.0800, subp. 4(B)
TABLE A: LIMITS AND OTHER REQUIREMENTS

US Steel Corp - Minntac

13700005 - 006

Facility Name:

Permit Number:

A-11 06/05/13

Subject Item: GP 005 Conveyor transfer points (26A-91-I/O-1)

Associated Items: CE 014 Wet Scrubber-High Efficiency w/o Lime

CE 015 Wet Scrubber-High Efficiency w/o Lime

EU 049 Conveyor Transfer 005 Feed

EU 050 Conveyor Transfer 005 Discharge

SV 027 Conveyor Transfer 005 Feed

SV 028 Conveyor Transfer 005 Discharge

What to do Why to do it

A. POLLUTANT LIMITS hdr

Total Particulate Matter: less than or equal to 0.02 grains/dry standard cubic foot Title I Condition: a 1991 action that avoided major

classification under 40 CFR 52.21

Particulate Matter < 10 micron: less than or equal to 0.01 grains/dry standard cubic

foot

Title I Condition: a 1991 action that avoided major

classification under 40 CFR 52.21

B. CONTROL EQUIPMENT MONITORING hdr

Gas Stream Pressure Drop: Upon installation of monitoring equipment, monitor

and record at least once every day when in operation. Once the operating range is

established it becomes an enforceable part of this permit. A deviation from the

established range shall trigger a corrective action as detailed in the O&M plan.

Minn. R. 7007.0800, subp. 4(D); 14; 16(J)

Liquid Flow Rate: Upon installation of monitoring equipment, monitor and record at

least once every day when in operation. Once the operating range is established it

becomes an enforceable part of this permit. A deviation from the established range

shall trigger a corrective action as detailed in the O&M plan.

Minn. R. 7007.0800, subps. 4(D); 14; 16(J)

C. PERFORMANCE TESTING REQUIREMENTS hdr

Initial Performance Test: due 730 days after 11/30/2004 on one stack to measure

PM and PM10 emissions.

Minn. R. 7017.2020, subp. 1

Performance Test: due before end of each 60 months following Initial Performance

Test on the stack that was not tested in the previous 60-month period to measure

PM and PM10 emissions.

Minn. R. 7017.2020, subp. 1

Performance Test Pre-test Meeting: due 7 days before Performance Test Minn. R. 7017.2030, subp. 4
TABLE A: LIMITS AND OTHER REQUIREMENTS

US Steel Corp - Minntac

13700005 - 006

Facility Name:

Permit Number:

A-12 06/05/13

Subject Item: GP 006 Stationary internal combustion engines

Associated Items: EU 006 Diesel Generator

EU 008 Diesel Generator

EU 009 Diesel Fire Pump

EU 012 Diesel Generator

EU 051 Diesel Generator

EU 215 Diesel Generator

EU 216 Diesel Generator

EU 383 Diesel Generator

EU 384 Diesel Generator

EU 385 Diesel Generator

EU 386 Diesel Generator

EU 387 Air Compressor

SV 006 Diesel Generator

SV 009 Diesel Fire Pump

SV 012 Diesel Generator

SV 029 Diesel Generator

SV 098 Diesel Generator

SV 099 Diesel Generator

SV 183 Diesel Generator

SV 184 Diesel Generator

SV 185 Diesel Generator

SV 186 Diesel Generator

SV 187 Diesel Air Compressor

What to do Why to do it

A. POLLUTANT LIMITS hdr

Sulfur Dioxide: less than or equal to 0.5 lbs/million Btu heat input Minn. R. 7011.2300, subp. 2

Opacity: less than or equal to 20 percent opacity once operating temperatures have

been attained.

Minn. R. 7011.2300, subp. 1

B. OPERATION REQUIREMENTS hdr

The Permittee shall record the amount of diesel fuel consumed each calendar

quarter. The Permittee shall obtain and maintain a fuel supplier certification of the

sulfur weight percent for each shipment of diesel fuel. If supplier certification is not

available, the Permittee shall sample diesel fuel from multiple the tank(s) after each

delivery but not more than once each calendar week when multiple deliveries are

made. The Permittee shall analyze the fuel sample to determine sulfur content of

diesel fuel in pcercent by weight in accordance with the current ASTM method.

The Permittee shall maintain records of the fuel deliveries and results of the fuel

analysis.

Minn. R. 7007.0800, subp. 4(B)
TABLE A: LIMITS AND OTHER REQUIREMENTS

US Steel Corp - Minntac

13700005 - 006

Facility Name:

Permit Number:

A-13 06/05/13

Subject Item: GP 007 Coal handling sources

Associated Items: CE 139 Fabric Filter - Low Temperature, i.e., T<180 Degrees F

CE 140 Fabric Filter - Low Temperature, i.e., T<180 Degrees F

EU 367 Coal Unloading Silo

EU 368 Coal Unloading Silo

EU 369 Coal Unloading Silo

EU 370 Coal Unloading Silo

EU 371 Coal Unloading Silo

EU 372 Coal Unloading Silo

EU 373 Coal Unloading Silo

EU 374 Coal Day Bin/Conveyor Transfer

EU 375 Coal Day Bin/Conveyor Transfer

EU 376 Coal Day Bin/Conveyor Transfer

EU 377 Coal Day Bin/Conveyor Transfer

EU 378 Coal Day Bin/Conveyor Transfer

EU 379 Coal Day Bin/Conveyor Transfer

EU 380 Coal Day Bin/Conveyor Transfer

EU 381 Coal Day Bin/Conveyor Transfer

EU 382 Coal Day Bin/Conveyor Transfer

SV 181 Coal Unloading Silo

SV 182 Coal Day Bin/Conveyor Transfer

What to do Why to do it

A. POLLUTANT LIMITS hdr

Opacity: less than or equal to 20 percent opacity 40 CFR 60.252(c); Minn. R. 7011.1150

B. CONTROL EQUIPMENT MONITORING hdr

Gas Stream Pressure Drop: Upon installation of monitoring equipment, monitor

and record at least once every day when in operation. Once the operating range is

established it becomes an enforceable part of this permit. A deviation from the

established range shall trigger a corrective action as detailed in the O&M plan.

Minn. R. 7007.0800, subp. 4(D); 14; 16(J)

Process Monitoring: the visual emissions observer in the facility staff shall check

stack visible emissions (opacity) once daily using a checklist that at a minimum

contains the information required in Appendix B. If the Permittee uses for a control

device a broken bag detector approved by the MPCA, the Permittee does not need

to conduct visible emissions checks for the stack associated with the control device

in this group.

Minn. R. 7007.0800, subp. 4(D); 14; 16(J)

C. PERFORMANCE TESTING REQUIREMENTS hdr

Initial Performance Test: due 180 days after 11/07/2003 on both stacks to measure

Opacity emission.

Minn. R. 7017.2020, subp. 1

Performance Test Pre-test Meeting: due 7 days before Performance Test Minn. R. 7017.2030, subp. 4
TABLE A: LIMITS AND OTHER REQUIREMENTS

US Steel Corp - Minntac

13700005 - 006

Facility Name:

Permit Number:

A-14 06/05/13

Subject Item: GP 009 Agglomerator Line 3

Associated Items: CE 086 Other

CE 088 Gravity Collector - Low Efficiency

CE 145 Multiple Cyclone w/o Fly Ash Reinjection - Most Multiclones

CE 146 Wet Scrubber-High Efficiency

EU 223 L3 Traveling Grate

EU 225 L3 Rotary Kiln

EU 226 L3 Pellet Cooler Secondary Air

MR 001 NOx & SO2 CEMS at Line 3 Waste Gas Stack (SV 103)

SV 103 L3 Waste Gas Stack

What to do Why to do it

A. POLLUTANT LIMITS hdr

Nitrogen Oxides: less than or equal to 5000 lbs/hour using 24-hour Block Average

from all five waste gas stacks combined (GP 009 through 011; SV 103, 118, 127,

144, and 151) at Permit Issuance.

Title I conditions: to mitigate adverse impacts on Class

I areas visibility from pellet induration; 40 CFR 52.21

(p); Minn. R. 7007.3000

Nitrogen Oxides: less than or equal to 13300 tons/year using 365-day Rolling Sum

from all five waste gas stacks combined (GP 009 through 011; SV 103, 118, 127,

144, and 151) at Permit Issuance. Representative NOx emission data shall be

used to demonstrate compliance for the first 365 days.

Title I conditions: to mitigate adverse impacts on Class

I areas visibility from pellet induration; 40 CFR 52.21

(p); Minn. R. 7007.3000

Nitrogen Oxides: less than or equal to 7300 tons/year using 365-day Rolling Sum

from all five waste gas stacks combined (GP 009 through 011; SV 103, 118, 127,

144, and 151) no later than Feb. 1, 2010.

Title I conditions: to mitigate adverse impacts on Class

I areas visibility from pellet induration; 40 CFR 52.21

(p); Minn. R. 7007.3000

Fluorides: less than or equal to 1.04 lbs/hour using 3-hour Average at Line 3 Waste

Gas Stack (SV 103).

Title I Condition: BACT emission limit, 40 CFR

52.21(j)(3); Minn. R. 7007.3000.

Carbon Monoxide: less than or equal to 68.8 lbs/hour using 3-hour Average at Line

3 Waste Gas Stack (SV 103).

Title I Condition: BACT emission limit, 40 CFR

52.21(j)(3); Minn. R. 7007.3000.

Volatile Organic Compounds: less than or equal to 51.6 lbs/hour using 3-hour

Average , as propane, at Line 3 Waste Gas Stack (SV 103).

Title I Condition: BACT emission limit, 40 CFR

52.21(j)(3); Minn. R. 7007.3000.

Total Particulate Matter: less than or equal to 0.3 grains/dry standard cubic foot of

exhaust gas unless required to further reduce emissions to comply with the less

stringent limit of either Minn. R. 7011.0730 or Minn. R. 7011.0735.

Minn. R. 7011.0610, subp. 1(A)(1)

Sulfur Dioxide: less than or equal to 2 lbs/million Btu heat input when liquid fuel is

combusted.

Minn. R. 7011.0610, subp. 2(B)

Opacity: less than or equal to 20 percent opacity except for one six-minute period

per hour of not more than 60 percent opacity.

Minn. R. 7011.0610, subp. 2(A)(2)

B. OPERATION REQUIREMENTS

(Note - CEMS requirements can be found in Table A under Subject Item: Total

Facility, Section F, and Subject Items MR 001 through MR 005; and in Table B)

hdr

Fuel Restrictions: The Permittee shall combust at the kiln burner natural gas, fuel

oil, and/or types of biomass that are specified in Appendix 1 of this permit; and at

the preheat burners natural gas. Other fuels may be combusted for a short period

of time during a trial burn as approved by an amendment to this permit.

Title I Condition: To address fuel options for the

indurating process modification of 1987-1989, 40 CFR

52.21(j)(3); Minn. R. 7007.3000; Minn. R. 7007.0800,

subp. 2

Material Usage: less than or equal to 3000 gallons/month of fuel additive for

Agglomerator Lines 3, 4, 5, 6, and 7 (Groups 9, 10, and 11) combined. The

Permittee shall maintain for at least three years a monthly record of fuel additive

usage including brands and suppliers.

Minn. R. 7007.0800, subp. 2

Material Usage: less than or equal to 16000 gallons/month of slag inhibitor for

Agglomerator Lines 3, 4, 5, 6, and 7 (Groups 9, 10, and 11) combined. The

Permittee shall maintain for at least three years a monthly record of slag inhibitor

usage including brands and suppliers.

Minn. R. 7007.0800, subp. 2
TABLE A: LIMITS AND OTHER REQUIREMENTS

US Steel Corp - Minntac

13700005 - 006

Facility Name:

Permit Number:

A-15 06/05/13

Material/Fuel Usage and Sulfur Content: The Permittee shall 1) record the amount

of materials and fuel consumed each day; 2) obtain and maintain a fuel supplier

certification of the sulfur weight percent for each shipment of fuel, or sample the

fuel oil from multiple the tank(s) after each delivery but not more than once each

calendar week when multiple deliveries are made; 3) sample materials entering the

grate-kiln once each calendar week; and 4) maintain records of the fuel deliveries,

material usage, and analyses results. The Permittee shall analyze the fuel and

material samples to determine their sulfur content in pcercent by weight and fuel

heating value in accordance with the current ASTM method.

Minn. R. 7007.0800, subp. 4(B)

C. CONTROL EQUIPMENT MONITORING hdr

Gas Stream Pressure Drop: Upon installation of monitoring equipment, monitor

and record at least once every day when in operation. Once the operating range is

established it becomes an enforceable part of this permit. A deviation from the

established range shall trigger a corrective action as detailed in the O&M plan.

Title I Condition: Monitoring for fluoride BACT, 40 CFR

52.21(j)(3); Minn. R. 7007.3000; Minn. R. 7007.0800,

subp. 4(D); subp. 14; subp. 16(J)

Liquid Flow Rate: Upon installation of monitoring equipment, monitor and record at

least once every day when in operation. Once the operating range is established it

becomes an enforceable part of this permit. A deviation from the established range

shall trigger a corrective action as detailed in the O&M plan.

Title I Condition: Monitoring for fluoride BACT, 40 CFR

52.21(j)(3); Minn. R. 7007.3000; Minn. R. 7007.0800,

subp. 4(D); subp. 14; subp. 16(J)

Waste Gas to Heat Input Ratio: The Permittee shall calculate and record, for each

hour when valid data are available, the ratio of SV 103 gas flow, as measured by

CEMS in cubic feet per hour in standard conditions (scfh), to total heat input at kiln

and grate burners in British Thermal Units per hour (Btu/hr). This ratio will be used

as an indicator to learn how complete CO & VOC are destroyed in the indurating

furnace.

Title I Condition: Monitoring for CO & VOC BACT, 40

CFR 52.21(j)(3); Minn. R. 7007.3000; Minn. R.

7007.0800, subp. 4(D); subp. 14; subp. 16(J)

D. PERFORMANCE TESTING REQUIREMENTS hdr

Initial Performance Test: due 180 days after 12/22/2008 to measure Fluorides, CO,

and VOC emissions at Line 3 Waste Gas Stack (SV 103).

Title I Condition: BACT emission limit, 40 CFR

52.21(j)(3); Minn. R. 7007.3000.

Performance Test: due before end of each 60 months starting 05/17/2005 to

measure PM and Opacity emissions.

Minn. R. 7017.2020, subp. 1

Performance Test Pre-test Meeting: due 7 days before Performance Test Minn. R. 7017.2030, subp. 4
TABLE A: LIMITS AND OTHER REQUIREMENTS

US Steel Corp - Minntac

13700005 - 006

Facility Name:

Permit Number:

A-16 06/05/13

Subject Item: GP 010 Agglomeration Lines 4 & 5

Associated Items: CE 101 Other

CE 102 Multiple Cyclone w/o Fly Ash Reinjection - Most Multiclones

CE 103 Wet Scrubber-High Efficiency w/o Lime

CE 111 Other

CE 112 Multiple Cyclone w/o Fly Ash Reinjection - Most Multiclones

CE 113 Wet Scrubber-High Efficiency w/o Lime

CE 181 Line 4 Low NOx Main Burner

CE 182 Line 5 Low NOx Main Burner

EU 259 L4 Traveling Grate

EU 260 L4 Recoup System Air

EU 261 L4 Rotary Kiln

EU 262 L4 Pellet Cooler Secondary Air

EU 280 L5 Traveling Grate

EU 281 L5 Recoup System Air

EU 282 L5 Rotary Kiln

EU 283 L5 Pellet Cooler Secondary Air

MR 002 NOx & SO2 CEMS at Line 4 Waste Gas Stack (SV 118)

MR 003 NOx & SO2 CEMS at Line 5 Waste Gas Stack (SV 127)

SV 118 L4 Waste Gas Stack

SV 127 L5 Waste Gas Stack

What to do Why to do it

CONSTRUCTION AUTHORIZATION hdr

Construction Authorization for CE 181 and CE 182: The construction authorization

expires 5 years after permit issuance. The Permittee must keep a record of the

dates of installation and start-up on site. The Permittee may apply for an extension

of the construction authorization deadline by following the Administrative

Amendment provisions in Minn. R. 7007.1400.

Title I Condition: To avoid classification of changes as

major modifications under 40 CFR Section 52.21 &

Minn. R. 7007.3000

A. POLLUTANT LIMITS hdr

Nitrogen Oxides: less than or equal to 5000 lbs/hour using 24-hour Block Average

from all five waste gas stacks combined (GP 009 through 011; SV 103, 118, 127,

144, and 151) at Permit Issuance.

Title I conditions: to mitigate adverse impacts on Class

I areas visibility from pellet induration; 40 CFR 52.21

(p); Minn. R. 7007.3000

Nitrogen Oxides: less than or equal to 13300 tons/year using 365-day Rolling Sum

from all five waste gas stacks combined (GP 009 through 011; SV 103, 118, 127,

144, and 151) at Permit Issuance. Representative NOx emission data shall be

used to demonstrate compliance for the first 365 days.

Title I conditions: to mitigate adverse impacts on Class

I areas visibility from pellet induration; 40 CFR 52.21

(p); Minn. R. 7007.3000

Nitrogen Oxides: less than or equal to 7300 tons/year using 365-day Rolling Sum

from all five waste gas stacks combined (GP 009 through 011; SV 103, 118, 127,

144, and 151) no later than Feb. 1, 2010.

Title I conditions: to mitigate adverse impacts on Class

I areas visibility from pellet induration; 40 CFR 52.21

(p); Minn. R. 7007.3000

Fluorides: less than or equal to 1.62 lbs/hour using 3-hour Average at Line 4 Waste

Gas Stack (SV 118) and Line 5 Waste Gas Stack (SV 127), respectively.

Title I Condition: BACT emission limit, 40 CFR

52.21(j)(3); Minn. R. 7007.3000.

Carbon Monoxide: less than or equal to 98.6 lbs/hour using 3-hour Average at Line

4 Waste Gas Stack (SV 118) and Line 5 Waste Gas Stack (SV 127), respectively.

Title I Condition: BACT emission limit, 40 CFR

52.21(j)(3); Minn. R. 7007.3000.

Volatile Organic Compounds: less than or equal to 74.0 lbs/hour using 3-hour

Average , as propane, at Line 4 Waste Gas Stack (SV 118) and Line 5 Waste Gas

Stack (SV 127), respectively.

Title I Condition: BACT emission limit, 40 CFR

52.21(j)(3); Minn. R. 7007.3000.

Sulfur Dioxide: less than or equal to 2 lbs/million Btu heat input , if a liquid fossil

fuel is burned.

Minn. R. 7011.0610, subp. 2(B)(1)

Total Particulate Matter: less than or equal to 0.3 grains/dry standard cubic foot of

exhaust gas unless required to further reduce emissions to comply with the less

stringent limit of either Minn. R. 7011.0730 or Minn. R. 7011.0735; or, alternatively,

as below:

Minn. R. 7011.0610, subp. 1(A)(1)
TABLE A: LIMITS AND OTHER REQUIREMENTS

US Steel Corp - Minntac

13700005 - 006

Facility Name:

Permit Number:

A-17 06/05/13

Total Particulate Matter: greater than or equal to 85 percent collection efficiency ,

provided that the entire emission facility is in compliance with NAAQS and MAAQS,

and the emission facility is located not less than one-forth mile from any residence

or public roadway. (This is an alternative demonstration of compliance to Total

Particulate Matter Limit.)

Minn. R. 7011.0610, subp. 1(A)(1); Minn. R.

7011.0715, subp. 3

Opacity: less than or equal to 20 percent opacity except for one six-minute period

per hour of not more than 60 percent opacity.

Minn. R. 7011.0610, subp. 1(A)(2)

B. OPERATION REQUIREMENTS

(Note - CEMS requirements can be found in Table A under Subject Item: Total

Facility, Section F, and Subject Items MR 001 through MR 005; and in Table B)

hdr

Fuel Restrictions: The Permittee shall combust at the kiln burner natural gas, fuel

oil, and/or types of biomass that are specified in Appendix 1 of this permit; and at

the preheat burners natural gas. Other fuels may be combusted for a short period

of time during a trial burn as approved by an amendment to this permit.

Title I Condition: To address fuel options for the

indurating process modification of 1987-1989, 40 CFR

52.21(j)(3); Minn. R. 7007.3000; Minn. R. 7007.0800,

subp. 2

Material Usage: less than or equal to 3000 gallons/month of fuel additive for

Agglomerator Lines 3, 4, 5, 6, and 7 (Groups 9, 10, and 11) combined. The

Permittee shall maintain for at least three years a monthly record of fuel additive

usage including brands and suppliers.

Minn. R. 7007.0800, subp. 2

Material Usage: less than or equal to 16000 gallons/month of slag inhibitor for

Agglomerator Lines 3, 4, 5, 6, and 7 (Groups 9, 10, and 11) combined. The

Permittee shall maintain for at least three years a monthly record of slag inhibitor

usage including brands and suppliers.

Minn. R. 7007.0800, subp. 2

Material/Fuel Usage and Sulfur Content: The Permittee shall record the amount of

materials and fuel consumed each day. The Permittee shall obtain and maintain a

fuel supplier certification of the sulfur weight percent for each shipment of fuel or

sample the fuel oil from multiple the tank(s) after each delivery but not more than

once each calendar week when multiple deliveries are made. The Permittee shall

sample materials entering the grate-kiln once each calendar week. The Permittee

shall analyze the fuel and material samples to determine their sulfur content in

pcercent by weight and fuel heating value in accordance with the current ASTM

method. The Permittee shall maintain records of the fuel deliveries, material

usage, and analyses results.

Minn. R. 7007.0800, subp. 4(B)

The Permittee shall operate and maintain the scrubber (CE 103) at any time that

the process equipment controlled by the scrubber (EU 261) is in operation. The

Permittee shall document periods of non-operation of the control equipment.

Title I Condition: To avoid classification as a major

source and modification under 40 CFR Section 52.21

and Minn. R. 7007.3000; Minn. R. 7007.0800, subps. 2

and 14

The Permittee shall operate and maintain the scrubber (CE 113) at any time that

the process equipment controlled by the scrubber (EU 282) is in operation. The

Permittee shall document periods of non-operation of the control equipment.

Title I Condition: To avoid classification as a major

source and modification under 40 CFR Section 52.21

and Minn. R. 7007.3000; Minn. R. 7007.0800, subps. 2

and 14

The Permittee shall operate and maintain the scrubbers in accordance with the

Operation and Maintenance (O & M) Plan. The Permittee shall keep copies of the

O & M Plan available for use by staff and MPCA staff.

Minn. R. 7007.0800, subp. 14

C. CONTROL EQUIPMENT MONITORING hdr

Gas Stream Pressure Drop: Upon installation of monitoring equipment, monitor

and record at least once every day when in operation. Once the operating range is

established it becomes an enforceable part of this permit. A deviation from the

established range shall trigger a corrective action as detailed in the O&M plan.

Title I Condition: Monitoring for fluoride BACT, 40 CFR

52.21(j)(3); Minn. R. 7007.3000; Minn. R. 7007.0800,

subp. 4(D); subp. 14; subp. 16(J)

Liquid Flow Rate: Upon installation of monitoring equipment, monitor and record at

least once every day when in operation. Once the operating range is established it

becomes an enforceable part of this permit. A deviation from the established range

shall trigger a corrective action as detailed in the O&M plan.

Title I Condition: Monitoring for fluoride BACT, 40 CFR

52.21(j)(3); Minn. R. 7007.3000; Minn. R. 7007.0800,

subp. 4(D); subp. 14; subp. 16(J)

Waste Gas to Heat Input Ratio: The Permittee shall calculate and record, for each

hour when valid data are available, the ratio of SV 118 gas flow, as measured by

CEMS in cubic feet per hour in standard conditions (scfh), to total heat input at kiln

and grate burners of Line 4 in British Thermal Units per hour (Btu/hr); and, similarly,

the ratio of SV 127 gas flow to total heat input of Line 5. The ratio will be used as

an indicator to learn how complete CO & VOC are destroyed in each indurating

furnace.

Title I Condition: Monitoring for CO & VOC BACT, 40

CFR 52.21(j)(3); Minn. R. 7007.3000; Minn. R.

7007.0800, subp. 4(D); subp. 14; subp. 16(J)

D. PERFORMANCE TESTING REQUIREMENTS hdr

Initial Performance Test: due 180 days after 12/22/2008 to measure Fluorides, CO,

and VOC emissions at Line 4 Waste Gas Stack (SV 118) and Line 5 Waste Gas

Stack (SV 127), respectively.

Title I Condition: BACT emission limit, 40 CFR

52.21(j)(3); Minn. R. 7007.3000.
TABLE A: LIMITS AND OTHER REQUIREMENTS

US Steel Corp - Minntac

13700005 - 006

Facility Name:

Permit Number:

A-18 06/05/13

Performance Test: due before end of each 60 months starting 05/18/2005 on the

stack that was not tested in the previous 60-month period to measure PM and

Opacity emissions.

Minn. R. 7017.2020, subp. 1

Performance Test Pre-test Meeting: due 7 days before Performance Test Minn. R. 7017.2030, subp. 4
TABLE A: LIMITS AND OTHER REQUIREMENTS

US Steel Corp - Minntac

13700005 - 006

Facility Name:

Permit Number:

A-19 06/05/13

Subject Item: GP 011 Agglomeration Lines 6 & 7 (Action 007)

Associated Items: CE 123 Other

CE 124 Gravity Collector - High Efficiency

CE 125 Multiple Cyclone w/o Fly Ash Reinjection - Most Multiclones

CE 126 Wet Scrubber-High Efficiency w/o Lime

CE 133 Other

CE 134 Gravity Collector - High Efficiency

CE 135 Multiple Cyclone w/o Fly Ash Reinjection - Most Multiclones

CE 136 Wet Scrubber-High Efficiency w/o Lime

EU 313 L6 Traveling Grate

EU 314 L6 Recoup System Air

EU 315 L6 Rotary Kiln

EU 316 L6 Pellet Cooler Secondary Air

EU 332 L7 Traveling Grate

EU 333 L7 Recoup System Air

EU 334 L7 Rotary Kiln

EU 335 L7 Pellet Cooler Secondary Air

MR 004 NOx & SO2 CEMS at Line 6 Waste Gas Stack (SV 144)

MR 005 NOx & SO2 CEMS at Line 7 Waste Gas Stack (SV 151)

SV 144 L6 Waste Gas Stack

SV 151 L7 Waste Gas Stack

What to do Why to do it

A. POLLUTANT LIMITS hdr

Nitrogen Oxides: less than or equal to 5000 lbs/hour using 24-hour Block Average

from all five waste gas stacks combined (GP 009 through 011; SV 103, 118, 127,

144, and 151) at Permit Issuance.

Title I conditions: to mitigate adverse impacts on Class

I areas visibility from pellet induration; 40 CFR 52.21

(p); Minn. R. 7007.3000

Nitrogen Oxides: less than or equal to 13300 tons/year using 365-day Rolling Sum

from all five waste gas stacks combined (GP 009 through 011; SV 103, 118, 127,

144, and 151) at Permit Issuance. Representative NOx emission data shall be

used to demonstrate compliance for the first 365 days.

Title I conditions: to mitigate adverse impacts on Class

I areas visibility from pellet induration; 40 CFR 52.21

(p); Minn. R. 7007.3000

Nitrogen Oxides: less than or equal to 7300 tons/year using 365-day Rolling Sum

from all five waste gas stacks combined (GP 009 through 011; SV 103, 118, 127,

144, and 151) no later than Feb. 1, 2010.

Title I conditions: to mitigate adverse impacts on Class

I areas visibility from pellet induration; 40 CFR 52.21

(p); Minn. R. 7007.3000

Fluorides: less than or equal to 1.62 lbs/hour using 3-hour Average at Line 6 Waste

Gas Stack (SV 144) and Line 7 Waste Gas Stack (SV 151), respectively.

Title I Condition: BACT emission limit, 40 CFR

52.21(j)(3); Minn. R. 7007.3000.

Carbon Monoxide: less than or equal to 74.0 lbs/hour using 3-hour Average at Line

6 Waste Gas Stack (SV 144) and Line 7 Waste Gas Stack (SV 151), respectively.

Title I Condition: BACT emission limit, 40 CFR

52.21(j)(3); Minn. R. 7007.3000.

Carbon Monoxide: less than or equal to 99 tons/year using 12-month Rolling Sum

for the combustion of wood waste (wood, wood bark, and sawdust) at Lines 6 and 7

combined.

Title I Condition: a 1997 action that avoided major

classification under 40 CFR 52.21

Volatile Organic Compounds: less than or equal to 54.3 lbs/hour using 3-hour

Average , as propane, at Line 6 Waste Gas Stack (SV 144) and Line 7 Waste Gas

Stack (SV 151), respectively.

Title I Condition: BACT emission limit, 40 CFR

52.21(j)(3); Minn. R. 7007.3000.

Volatile Organic Compounds: less than or equal to 39 tons/year using 12-month

Rolling Sum for the combustion of wood waste (wood, wood bark, and sawdust) at

Lines 6 and 7 combined.

Title I Condition: a 1997 action that avoided major

classification under 40 CFR 52.21

Total Particulate Matter: less than or equal to 0.3 grains/dry standard cubic foot of

exhaust gas unless required to further reduce emissions to comply with the less

stringent limit of either Minn. R. 7011.0730 or Minn. R. 7011.0735; or, alternatively,

as below:

Minn. R. 7011.0610, subp. 1(A)(1)
TABLE A: LIMITS AND OTHER REQUIREMENTS

US Steel Corp - Minntac

13700005 - 006

Facility Name:

Permit Number:

A-20 06/05/13

Total Particulate Matter: greater than or equal to 85 percent collection efficiency ,

provided that the entire emission facility is in compliance with NAAQS and MAAQS,

and the emission facility is located not less than one-forth mile from any residence

or public roadway. (This is an alternative demonstration of compliance to Total

Particulate Matter Limit.)

Minn. R. 7011.0610, subp. 1(A)(1); Minn. R.

7011.0715, subp. 3

Sulfur Dioxide: less than or equal to 2 lbs/million Btu heat input , if a liquid fossil

fuel is burned; or less than or equal to 4 lbs/million Btu heat input, if a solid fossil

fuel is burned.

Minn. R. 7011.0610, subp. 2(B)(1)

Opacity: less than or equal to 20 percent opacity except for one six-minute period

per hour of not more than 60 percent opacity.

Minn. R. 7011.0610, subp. 1(A)(2)

B. OPERATION REQUIREMENTS

(Note - CEMS requirements can be found in Table A under Subject Item: Total

Facility, Section F, and Subject Items MR 001 through MR 005; and in Table B)

hdr

Fuel Restrictions: The Permittee shall combust at the kiln burner natural gas, coal,

fuel oil, and/or types of biomass that are specified in Appendix 1 of this permit; and

at the preheat burners natural gas. Other fuels may be combusted for a short

period of time during a trial burn as approved by an amendment to this permit.

Title I Condition: To address fuel options for the

indurating process modification of 1987-1989, 40 CFR

52.21(j)(3); Minn. R. 7007.3000; Minn. R. 7007.0800,

subp. 2

Heating Value and Usage of Wood Waste Fuel: a representative wood waste fuel

sample shall be conllected and analyzed for heating value (Btu/lb) once each

calendar quarter. The Permittee shall record, in tons/month, the amount of wood

waste combusted in the kilns of this Group.

Title I Condition: a 1997 action that avoided major

classification under 40 CFR 52.21

CO and VOC Emission Factors: a performance test for CO and VOC shall be

conducted, at either one or both kilns of this Group for at least once, to generate

emission factors in lbs/million Btu for purpose of emission calculation for the

combustion of wood waste (wood, wood bark, and sawdust).

Title I Condition: a 1997 action that avoided major

classification under 40 CFR 52.21

Material Usage: less than or equal to 3000 gallons/month of fuel additive for

Agglomerator Lines 3, 4, 5, 6, and 7 (Groups 9, 10, and 11) combined. The

Permittee shall maintain for at least three years a monthly record of fuel additive

usage including brands and suppliers.

Minn. R. 7007.0800, subp. 2

Material Usage: less than or equal to 16000 gallons/month of slag inhibitor for

Agglomerator Lines 3, 4, 5, 6, and 7 (Groups 9, 10, and 11) combined. The

Permittee shall maintain for at least three years a monthly record of slag inhibitor

usage including brands and suppliers.

Minn. R. 7007.0800, subp. 2

Material/Fuel Usage and Sulfur Content: The Permittee shall record the amount of

materials and fuel consumed each day. The Permittee shall obtain and maintain a

fuel supplier certification of the sulfur weight percent for each shipment of fuel or

sample the fuel oil from multiple the tank(s) after each delivery but not more than

once each calendar week when multiple deliveries are made. The Permittee shall

sample other fuels and materials entering the grate-kiln once each calendar week.

The Permittee shall analyze the fuel and material samples to determine their sulfur

content in pcercent by weight and fuel heating value in accordance with the current

ASTM method. The Permittee shall maintain records of the fuel deliveries, material

usage, and analyses results.

Minn. R. 7007.0800, subp. 4(B)

C. CONTROL EQUIPMENT MONITORING hdr

Gas Stream Pressure Drop: Upon installation of monitoring equipment, monitor

and record at least once every day when in operation. Once the operating range is

established it becomes an enforceable part of this permit. A deviation from the

established range shall trigger a corrective action as detailed in the O&M plan.

Title I Condition: Monitoring for fluoride BACT, 40 CFR

52.21(j)(3); Minn. R. 7007.3000; Minn. R. 7007.0800,

subp. 4(D); subp. 14; subp. 16(J)

Liquid Flow Rate: Upon installation of monitoring equipment, monitor and record at

least once every day when in operation. Once the operating range is established it

becomes an enforceable part of this permit. A deviation from the established range

shall trigger a corrective action as detailed in the O&M plan.

Title I Condition: Monitoring for fluoride BACT, 40 CFR

52.21(j)(3); Minn. R. 7007.3000; Minn. R. 7007.0800,

subp. 4(D); subp. 14; subp. 16(J)

Waste Gas to Heat Input Ratio: The Permittee shall calculate and record, for each

hour when valid data are available, the ratio of SV 144 gas flow, as measured by

CEMS in cubic feet per hour in standard conditions (scfh), to total heat input at kiln

and grate burners of Line 6 in British Thermal Units per hour (Btu/hr); and, similarly,

the ratio of SV 151 gas flow to total heat input of Line 7. The ratio will be used as

an indicator to learn how complete CO & VOC are destroyed in each indurating

furnace.

Title I Condition: Monitoring for CO & VOC BACT, 40

CFR 52.21(j)(3); Minn. R. 7007.3000; Minn. R.

7007.0800, subp. 4(D); subp. 14; subp. 16(J)

D. PERFORMANCE TESTING REQUIREMENTS hdr

Initial Performance Test: due 180 days after 12/22/2008 to measure Fluorides, CO,

and VOC emissions at Line 6 Waste Gas Stack (SV 144) and Line 7 Waste Gas

Stack (SV 151), respectively.

Title I Condition: BACT emission limit, 40 CFR

52.21(j)(3); Minn. R. 7007.3000.
TABLE A: LIMITS AND OTHER REQUIREMENTS

US Steel Corp - Minntac

13700005 - 006

Facility Name:

Permit Number:

A-21 06/05/13

Performance Test: due before end of each 60 months starting 04/20/2005 on the

stack that was not tested in the previous 60-month period to measure PM and

Opacity emissions.

Minn. R. 7017.2020, subp. 1

Performance Test Pre-test Meeting: due 7 days before Performance Test Minn. R. 7017.2030, subp. 4
TABLE A: LIMITS AND OTHER REQUIREMENTS

US Steel Corp - Minntac

13700005 - 006

Facility Name:

Permit Number:

A-22 06/05/13

Subject Item: GP 012 Pre-1969 ore transfer points around crushers

Associated Items: CE 001 Fabric Filter - Low Temperature, i.e., T<180 Degrees F

CE 008 Wet Scrubber-High Efficiency w/o Lime

CE 010 Wet Scrubber-High Efficiency w/o Lime

CE 016 Wet Scrubber-High Efficiency w/o Lime

CE 021 Wet Scrubber-High Efficiency w/o Lime

CE 022 Wet Scrubber-High Efficiency w/o Lime

CE 047 Wet Scrubber-High Efficiency w/o Lime

EU 013 Step I Coarse Crusher

EU 014 Step I Coarse Crusher

EU 034 Conveyor Transfer 005-006

EU 035 Conveyor Transfer 005-006

EU 040 Conveyor Transfer 005-006

EU 052 Conveyor Transfer 008 to 009

EU 053 Conveyor Transfer 008 to 009

EU 058 Conveyor Transfer 005 to 006

EU 059 Conveyor Transfer 005 to 006

EU 060 Conveyor Transfer 005 to 006

EU 061 Conveyor Transfer 003 to 004

EU 062 Conveyor Transfer 003 to 004

EU 063 Conveyor Transfer 003 to 004

EU 064 Conveyor Transfer 003 to 004

EU 065 Tertiary Storage Bin 1-4

EU 066 Tertiary Storage Bin 1-4

EU 067 Tertiary Storage Bin 1-4

EU 102 Storage Bin 070-02

SV 013 Step I Coarse Crusher

SV 021 Conveyor Transfer 005-006

SV 023 Conveyor Transfer 005-006

SV 030 Conveyor Transfer 008-009

SV 035 Conveyor Transfer 005-006

SV 036 Conveyor Transfer 003-004

SV 037 Tertiary Storage Bins 1-4

SV 061 Storage Bin 070-02

What to do Why to do it

A. POLLUTANT LIMITS hdr

Total Particulate Matter: less than or equal to 0.3 grains/dry standard cubic foot of

exhaust gas unless required to further reduce emissions to comply with the less

stringent limit of either Minn R. 7011.0730 or Minn. R. 7011.0735; or, alternatively,

as below:

Minn. R. 7011.0710, subp. 1(A)

Total Particulate Matter: greater than or equal to 85 percent collection efficiency ,

provided that the entire emission facility is in compliance with NAAQS and MAAQS,

and the emission facility is located not less than one-forth mile from any residence

or public roadway. (This is an alternative demonstration of compliance to Total

Particulate Matter Limit.)

Minn. R. 7011.0710, subp. 3

Opacity: less than or equal to 20 percent opacity except for one six-minute period

per hour of not more than 60 percent opacity.

Minn. R. 7011.0710, subp. 1(B)

B. CONTROL EQUIPMENT MONITORING hdr
TABLE A: LIMITS AND OTHER REQUIREMENTS

US Steel Corp - Minntac

13700005 - 006

Facility Name:

Permit Number:

A-23 06/05/13

Gas Stream Pressure Drop: Upon installation of monitoring equipment, monitor

and record at least once every day when in operation. Once the operating range is

established it becomes an enforceable part of this permit. A deviation from the

established range shall trigger a corrective action as detailed in the O&M plan.

Minn. R. 7007.0800, subp. 4(D); subp. 14; subp. 16(J)

Liquid Flow Rate for Wet Scrubbers: Upon installation of monitoring equipment,

monitor and record at least once every day when in operation. Once the operating

range is established it becomes an enforceable part of this permit. A deviation

from the established range shall trigger a corrective action as detailed in the O&M

plan.

Minn. R. 7007.0800, subp. 4(D); subp. 14; subp. 16(J)

Process Monitoring: the visual emissions observer in the facility staff shall check

stack visible emissions (opacity) for SV 013 (CE 001) once daily using a checklist

that at a minimum contains the information required in Appendix B. If the Permittee

uses for CE 001 a broken bag detector approved by the MPCA, the Permittee does

not need to conduct visible emissions checks for SV 013.

Minn. R. 7007.0800, subp. 4(D); 14; 16(J)

C. PERFORMANCE TESTING REQUIREMENTS hdr

Initial Performance Test: due 730 days after 12/22/2008 on one stack to measure

PM emission.

Minn. R. 7017.2020, subp. 1

Performance Test: due before end of each 60 months following Initial Performance

Test on one stack that was not tested in the previous 60-month period to measure

PM emission.

Minn. R. 7017.2020, subp. 1

Performance Test Pre-test Meeting: due 7 days before Performance Test Minn. R. 7017.2030, subp. 4
TABLE A: LIMITS AND OTHER REQUIREMENTS

US Steel Corp - Minntac

13700005 - 006

Facility Name:

Permit Number:

A-24 06/05/13

Subject Item: GP 013 Post-1969 ore transfer points around crushers

Associated Items: CE 002 Fabric Filter - Low Temperature, i.e., T<180 Degrees F

CE 003 Fabric Filter - Low Temperature, i.e., T<180 Degrees F

CE 006 Wet Scrubber-High Efficiency w/o Lime

CE 007 Wet Scrubber-High Efficiency w/o Lime

CE 009 Wet Scrubber-High Efficiency w/o Lime

CE 011 Wet Scrubber-High Efficiency w/o Lime

CE 012 Wet Scrubber-High Efficiency w/o Lime

CE 013 Wet Scrubber-High Efficiency w/o Lime

CE 023 Wet Scrubber-High Efficiency w/o Lime

CE 040 Wet Scrubber-High Efficiency w/o Lime

EU 015 Step II Coarse Crusher 

EU 016 Step II Coarse Crusher 

EU 017 Step III Coarse Crusher & Lime Dump

EU 018 Step III Coarse Crusher & Lime Dump

EU 019 Step III Coarse Crusher & Lime Dump

EU 020 Step III Coarse Crusher & Lime Dump

EU 026 Step III Coarse Crusher Pan Feeders & Lime Transfer

EU 027 Step III Coarse Crusher Pan Feeders & Lime Transfer

EU 036 Conveyor Transfer 010-01

EU 037 Conveyor Transfer 010-01 

EU 038 Conveyor Transfer 010-01 

EU 039 Conveyor Transfer 010-01

EU 041 Conveyor Transfer 004-005

EU 042 Conveyor Transfer 004-005

EU 043 Conveyor Transfer 004-005

EU 044 Conveyor Transfer 004-005

EU 045 Conveyor Transfer 004-005

EU 046 Conveyor Transfer 004-005

EU 047 Conveyor Transfer 011-02/03

EU 048 Surge Pile/Reclaim 011-01

EU 068 Tertiary Storage Bin 1-4

EU 085 Tertiary Crusher 080 Bins 5-8

EU 086 Tertiary Crusher 080 Bins 5-8

EU 087 Tertiary Crusher 080 Bins 5-8

EU 088 Tertiary Crusher 080 Bins 5-8

EU 089 Tertiary Crusher 080 Bins 5-8

EU 090 Tertiary Crusher 080 Bins 5-8

EU 091 Tertiary Crusher 080 Bins 5-8

EU 092 Tertiary Crusher 080 Bins 5-8

SV 014 Step II Coarse Crusher

SV 015 Step III Coarse Crusher

SV 018 Step III Coarse Crusher Pan Feeders

SV 022 Conveyor Transfer 010-01

SV 024 Conveyor Transfer 004-005

SV 025 Conveyor Transfer 011-02/03
TABLE A: LIMITS AND OTHER REQUIREMENTS

US Steel Corp - Minntac

13700005 - 006

Facility Name:

Permit Number:

A-25 06/05/13

Associated Items: SV 026 Surge Pile/Reclaim 011-01

SV 037 Tertiary Storage Bins 1-4

SV 054 Tertiary Crusher 080 5-8 Bins

What to do Why to do it

A. POLLUTANT LIMITS hdr

Total Particulate Matter: less than or equal to 0.3 grains/dry standard cubic foot of

exhaust gas unless required to further reduce emissions to comply with the less

stringent limit of either Minn R. 7011.0730 or Minn. R. 7011.0735; or, alternatively,

as below:

Minn. R. 7011.0715, subp. 1(A)

Total Particulate Matter: greater than or equal to 85 percent collection efficiency ,

provided that the entire emission facility is in compliance with NAAQS and MAAQS,

and the emission facility is located not less than one-forth mile from any residence

or public roadway. (This is an alternative demonstration of compliance to Total

Particulate Matter Limit.)

Minn. R. 7011.0715, subp. 3

Opacity: less than or equal to 20 percent opacity Minn. R. 7011.0715, subp. 1(B)

B. CONTROL EQUIPMENT MONITORING hdr

Gas Stream Pressure Drop: Upon installation of monitoring equipment, monitor

and record at least once every day when in operation. Once the operating range is

established it becomes an enforceable part of this permit. A deviation from the

established range shall trigger a corrective action as detailed in the O&M plan.

Minn. R. 7007.0800, subp. 4(D); subp. 14; subp. 16(J)

Liquid Flow Rate for Wet Scrubbers: Upon installation of monitoring equipment,

monitor and record at least once every day when in operation. Once the operating

range is established it becomes an enforceable part of this permit. A deviation

from the established range shall trigger a corrective action as detailed in the O&M

plan.

Minn. R. 7007.0800, subp. 4(D); subp. 14; subp. 16(J)

Process Monitoring: the visual emissions observer in the facility staff shall check

stack visible emissions (opacity) for SV 014 (CE 002) and SV 015 (CE 003) once

daily using a checklist that at a minimum contains the information required in

Appendix B. If the Permittee uses for a control device a broken bag detector

approved by the MPCA, the Permittee does not need to conduct visible emissions

checks for the stack associated with the control device in this group.

Minn. R. 7007.0800, subp. 4(D); 14; 16(J)

C. PERFORMANCE TESTING REQUIREMENTS hdr

Initial Performance Test: due 730 days after 11/30/2004 on SV 054 and another

stack to measure PM emission.

Minn. R. 7017.2020, subp. 1

Performance Test: due before end of each 60 months following Initial Performance

Test on one stack that was not tested in the previous 60-month period to measure

PM emission.

Minn. R. 7017.2020, subp. 1

Performance Test Pre-test Meeting: due 7 days before Performance Test Minn. R. 7017.2030, subp. 4
TABLE A: LIMITS AND OTHER REQUIREMENTS

US Steel Corp - Minntac

13700005 - 006

Facility Name:

Permit Number:

A-26 06/05/13

Subject Item: GP 014 Pre-1969 secondary crushers

Associated Items: CE 017 Wet Scrubber-High Efficiency w/o Lime

CE 018 Wet Scrubber-High Efficiency w/o Lime

CE 019 Wet Scrubber-High Efficiency w/o Lime

CE 020 Wet Scrubber-High Efficiency w/o Lime

EU 054 Secondary Crusher L1

EU 055 Secondary Crusher L2

EU 056 Secondary Crusher L3

EU 057 Secondary Crusher L4

SV 031 Secondary Crusher L1

SV 032 Secondary Crusher L2

SV 033 Secondary Crusher L3

SV 034 Secondary Crusher L4

What to do Why to do it

A. POLLUTANT LIMITS hdr

Total Particulate Matter: less than or equal to 0.3 grains/dry standard cubic foot of

exhaust gas unless required to further reduce emissions to comply with the less

stringent limit of either Minn R. 7011.0730 or Minn. R. 7011.0735; or, alternatively,

as below:

Minn. R. 7011.0710, subp. 1(A)

Total Particulate Matter: greater than or equal to 85 percent collection efficiency ,

provided that the entire emission facility is in compliance with NAAQS and MAAQS,

and the emission facility is located not less than one-forth mile from any residence

or public roadway. (This is an alternative demonstration of compliance to Total

Particulate Matter Limit.)

Minn. R. 7011.0710, subp. 3

Opacity: less than or equal to 20 percent opacity except for one six-minute period

per hour of not more than 60 percent opacity.

Minn. R. 7011.0710, subp. 1(B)

B. CONTROL EQUIPMENT MONITORING hdr

Gas Stream Pressure Drop: Upon installation of monitoring equipment, monitor

and record at least once every day when in operation. Once the operating range is

established it becomes an enforceable part of this permit. A deviation from the

established range shall trigger a corrective action as detailed in the O&M plan.

Minn. R. 7007.0800, subp. 4(D); subp. 14; subp. 16(J)

Liquid Flow Rate: Upon installation of monitoring equipment, monitor and record

at least once every day when in operation. Once the operating range is established

it becomes an enforceable part of this permit. A deviation from the established

range shall trigger a corrective action as detailed in the O&M plan.

Minn. R. 7007.0800, subp. 4(D); subp. 14; subp. 16(J)

C. PERFORMANCE TESTING REQUIREMENTS hdr

Initial Performance Test: due 180 days after 11/07/2003 on one stack to measure

PM emission.

Minn. R. 7017.2020, subp. 1

Performance Test Pre-test Meeting: due 7 days before Performance Test Minn. R. 7017.2030, subp. 4
TABLE A: LIMITS AND OTHER REQUIREMENTS

US Steel Corp - Minntac

13700005 - 006

Facility Name:

Permit Number:

A-27 06/05/13

Subject Item: GP 015 Pre-1969 tertiary crushers

Associated Items: CE 024 Wet Scrubber-High Efficiency w/o Lime

CE 025 Wet Scrubber-High Efficiency w/o Lime

CE 026 Wet Scrubber-High Efficiency w/o Lime

CE 027 Wet Scrubber-High Efficiency w/o Lime

CE 028 Wet Scrubber-High Efficiency w/o Lime

CE 029 Wet Scrubber-High Efficiency w/o Lime

EU 069 Tertiary Crusher L1

EU 070 Tertiary Crusher L2

EU 071 Tertiary Crusher L3

EU 072 Tertiary Crusher L4

EU 073 Tertiary Crusher L5

EU 074 Tertiary Crusher L6

SV 038 Tertiary Crusher L1

SV 039 Tertiary Crusher L2

SV 040 Tertiary Crusher L3

SV 041 Tertiary Crusher L4

SV 042 Tertiary Crusher L5

SV 043 Tertiary Crusher L6

What to do Why to do it

A. POLLUTANT LIMITS hdr

Total Particulate Matter: less than or equal to 0.3 grains/dry standard cubic foot of

exhaust gas unless required to further reduce emissions to comply with the less

stringent limit of either Minn R. 7011.0730 or Minn. R. 7011.0735; or, alternatively,

as below:

Minn. R. 7011.0710, subp. 1(A)

Total Particulate Matter: greater than or equal to 85 percent collection efficiency ,

provided that the entire emission facility is in compliance with NAAQS and MAAQS,

and the emission facility is located not less than one-forth mile from any residence

or public roadway. (This is an alternative demonstration of compliance to Total

Particulate Matter Limit.)

Minn. R. 7011.0710, subp. 3

Opacity: less than or equal to 20 percent opacity except for one six-minute period

per hour of not more than 60 percent opacity.

Minn. R. 7011.0710, subp. 1(B)

B. CONTROL EQUIPMENT MONITORING hdr

Gas Stream Pressure Drop: Upon installation of monitoring equipment, monitor

and record at least once every day when in operation. Once the operating range is

established it becomes an enforceable part of this permit. A deviation from the

established range shall trigger a corrective action as detailed in the O&M plan.

Minn. R. 7007.0800, subp. 4(D); subp. 14; subp. 16(J)

Liquid Flow Rate: Upon installation of monitoring equipment, monitor and record

at least once every day when in operation. Once the operating range is established

it becomes an enforceable part of this permit. A deviation from the established

range shall trigger a corrective action as detailed in the O&M plan.

Minn. R. 7007.0800, subp. 4(D); subp. 14; subp. 16(J)

C. PERFORMANCE TESTING REQUIREMENTS hdr

Initial Performance Test: due 365 days after 11/30/2004 on one stack to measure

PM emission.

Minn. R. 7017.2020, subp. 1

Performance Test Pre-test Meeting: due 7 days before Performance Test Minn. R. 7017.2030, subp. 4
TABLE A: LIMITS AND OTHER REQUIREMENTS

US Steel Corp - Minntac

13700005 - 006

Facility Name:

Permit Number:

A-28 06/05/13

Subject Item: GP 016 Post-1969 secondary crushers

Associated Items: CE 041 Wet Scrubber-High Efficiency w/o Lime

CE 042 Wet Scrubber-High Efficiency w/o Lime

CE 043 Wet Scrubber-High Efficiency w/o Lime

CE 044 Wet Scrubber-High Efficiency w/o Lime

CE 045 Wet Scrubber-High Efficiency w/o Lime

CE 048 Wet Scrubber-High Efficiency w/o Lime

CE 050 Wet Scrubber-High Efficiency w/o Lime

CE 051 Wet Scrubber-High Efficiency w/o Lime

CE 052 Wet Scrubber-High Efficiency w/o Lime

CE 053 Wet Scrubber-High Efficiency w/o Lime

CE 054 Wet Scrubber-High Efficiency w/o Lime

EU 093 Secondary Crusher L6

EU 094 Secondary Crusher L7

EU 095 Secondary Crusher L8

EU 096 Secondary Crusher L9

EU 097 Secondary Crusher L10

EU 103 Secondary Crusher L5

EU 106 Secondary Crusher L11

EU 107 Secondary Crusher L12

EU 108 Secondary Crusher L13

EU 109 Secondary Crusher L14

EU 110 Secondary Crusher L15

SV 055 Secondary Crusher L6

SV 056 Secondary Crusher L7

SV 057 Secondary Crusher L8

SV 058 Secondary Crusher L9

SV 059 Secondary Crusher L10

SV 062 Secondary Crusher L5

SV 064 Secondary Crusher L11

SV 065 Secondary Crusher L12

SV 066 Secondary Crusher L13

SV 067 Secondary Crusher L14

SV 068 Secondary Crusher L15

What to do Why to do it

A. POLLUTANT LIMITS hdr

Total Particulate Matter: less than or equal to 0.3 grains/dry standard cubic foot of

exhaust gas unless required to further reduce emissions to comply with the less

stringent limit of either Minn R. 7011.0730 or Minn. R. 7011.0735; or, alternatively,

as below:

Minn. R. 7011.0715, subp. 1(A)

Total Particulate Matter: greater than or equal to 85 percent collection efficiency ,

provided that the entire emission facility is in compliance with NAAQS and MAAQS,

and the emission facility is located not less than one-forth mile from any residence

or public roadway. (This is an alternative demonstration of compliance to Total

Particulate Matter Limit.)

Minn. R. 7011.0715, subp. 3

Opacity: less than or equal to 20 percent opacity Minn. R. 7011.0715, subp. 1(B)

B. CONTROL EQUIPMENT MONITORING hdr
TABLE A: LIMITS AND OTHER REQUIREMENTS

US Steel Corp - Minntac

13700005 - 006

Facility Name:

Permit Number:

A-29 06/05/13

Gas Stream Pressure Drop: M Upon installation of monitoring equipment, monitor

and record at least once every day when in operation. Once the operating range is

established it becomes an enforceable part of this permit. A deviation from the

established range shall trigger a corrective action as detailed in the O&M plan.

Minn. R. 7007.0800, subp. 4(D); subp. 14; subp. 16(J)

Liquid Flow Rate: Upon installation of monitoring equipment, monitor and record

at least once every day when in operation. Once the operating range is established

it becomes an enforceable part of this permit. A deviation from the established

range shall trigger a corrective action as detailed in the O&M plan.

Minn. R. 7007.0800, subp. 4(D); subp. 14; subp. 16(J)

C. PERFORMANCE TESTING REQUIREMENTS hdr

Initial Performance Test: due 730 days after 11/07/2003 on one stack to measure

PM emission.

Minn. R. 7017.2020, subp. 1

Performance Test Pre-test Meeting: due 7 days before Performance Test Minn. R. 7017.2030, subp. 4
TABLE A: LIMITS AND OTHER REQUIREMENTS

US Steel Corp - Minntac

13700005 - 006

Facility Name:

Permit Number:

A-30 06/05/13

Subject Item: GP 017 Post-1969 ore transfer for fine crushers

Associated Items: CE 046 Wet Scrubber-High Efficiency w/o Lime

CE 049 Wet Scrubber-High Efficiency w/o Lime

CE 055 Wet Scrubber-High Efficiency w/o Lime

CE 056 Wet Scrubber-High Efficiency w/o Lime

CE 057 Wet Scrubber-High Efficiency w/o Lime

CE 058 Wet Scrubber-High Efficiency w/o Lime

CE 071 Wet Scrubber-High Efficiency w/o Lime

EU 098 Conveyor Transfer 008 to 009

EU 099 Conveyor Transfer 008 to 009

EU 100 Conveyor Transfer 008 to 009

EU 101 Conveyor Transfer 008 to 009

EU 104 Conveyor Transfer 008-009

EU 105 Conveyor Transfer 008-009

EU 111 Conveyor Transfer 001-070 Bin

EU 112 Conveyor Transfer 003

EU 113 Conveyor Transfer 003

EU 114 Conveyor Transfer 003-004

EU 115 Conveyor Transfer 003-004

EU 116 Tertiary Storage 006-080 Bin

EU 117 Tertiary Storage 006-080 Bin

EU 118 Tertiary Storage 006-080 Bin

EU 119 Tertiary Storage 006-080 Bin

EU 120 Tertiary Storage 006-080 Bin

EU 121 Tertiary Storage 006-080 Bin

EU 122 Tertiary Storage 006-080 Bin

EU 123 Tertiary Storage 006-080 Bin

EU 124 Tertiary Storage 006-080 Bin

EU 125 Tertiary Storage 006-080 Bin

EU 126 Tertiary Storage 006-080 Bin

EU 127 Tertiary Storage 006-080 Bin

EU 140 Conveyor Transfer 005-006

EU 141 Conveyor Transfer 005-006

SV 060 Conveyor Transfer 008-009

SV 063 Conveyor Transfer 008-009

SV 069 Conveyor Transfer 001-070 Bin

SV 070 Conveyor Transfer 003

SV 071 Conveyor Transfer 003-004

SV 072 Tertiary Storage 006-080 Bins

SV 085 Conveyor Transfer 005-006

What to do Why to do it

A. POLLUTANT LIMITS hdr

Total Particulate Matter: less than or equal to 0.3 grains/dry standard cubic foot of

exhaust gas unless required to further reduce emissions to comply with the less

stringent limit of either Minn R. 7011.0730 or Minn. R. 7011.0735; or, alternatively,

as below:

Minn. R. 7011.0715, subp. 1(A)
TABLE A: LIMITS AND OTHER REQUIREMENTS

US Steel Corp - Minntac

13700005 - 006

Facility Name:

Permit Number:

A-31 06/05/13

Total Particulate Matter: greater than or equal to 85 percent collection efficiency ,

provided that the entire emission facility is in compliance with NAAQS and MAAQS,

and the emission facility is located not less than one-forth mile from any residence

or public roadway. (This is an alternative demonstration of compliance to Total

Particulate Matter Limit.)

Minn. R. 7011.0715, subp. 3

Opacity: less than or equal to 20 percent opacity Minn. R. 7011.0715, subp. 1(B)

B. CONTROL EQUIPMENT MONITORING hdr

Gas Stream Pressure Drop: Monitor and record as least once every day when in

operation, once the pressure gauge is installed for each piece of control equipment

in this group. Complete pressure drop monitoring equipment debugging,

trouble-shooting, and establishment of parameter range within 180 days of

installation.

Minn. R. 7007.0800, subp. 4(D); subp. 14; subp. 16(J)

Liquid Flow Rate: Monitor and record as least once every day when in operation,

once the monitoring equipment is installed for each piece of wet scrubbers in this

group. Complete monitoring equipment debugging, trouble-shooting, and

establishment of parameter range within 180 days of installation.

Minn. R. 7007.0800, subp. 4(D); subp. 14; subp. 16(J)

C. PERFORMANCE TESTING REQUIREMENTS hdr

Initial Performance Test: due 730 days after 11/30/2004 on two stacks to measure

PM emission.

Minn. R. 7017.2020, subp. 1

Performance Test: due before end of each 60 months following Initial Performance

Test on two stacks that were not tested in the previous 60-month period to measure

PM emission.

Minn. R. 7017.2020, subp. 1

Performance Test Pre-test Meeting: due 7 days before Performance Test Minn. R. 7017.2030, subp. 4
TABLE A: LIMITS AND OTHER REQUIREMENTS

US Steel Corp - Minntac

13700005 - 006

Facility Name:

Permit Number:

A-32 06/05/13

Subject Item: GP 018 Post-1969 tertiary crushers 

Associated Items: CE 030 Wet Scrubber-High Efficiency w/o Lime

CE 031 Wet Scrubber-High Efficiency w/o Lime

CE 032 Wet Scrubber-High Efficiency w/o Lime

CE 033 Wet Scrubber-High Efficiency w/o Lime

CE 034 Wet Scrubber-High Efficiency w/o Lime

CE 035 Wet Scrubber-High Efficiency w/o Lime

CE 036 Wet Scrubber-High Efficiency w/o Lime

CE 037 Wet Scrubber-High Efficiency w/o Lime

CE 038 Wet Scrubber-High Efficiency w/o Lime

CE 039 Wet Scrubber-High Efficiency w/o Lime

CE 059 Wet Scrubber-High Efficiency w/o Lime

CE 060 Wet Scrubber-High Efficiency w/o Lime

CE 061 Wet Scrubber-High Efficiency w/o Lime

CE 062 Wet Scrubber-High Efficiency w/o Lime

CE 063 Wet Scrubber-High Efficiency w/o Lime

CE 064 Wet Scrubber-High Efficiency w/o Lime

CE 065 Wet Scrubber-High Efficiency w/o Lime

CE 066 Wet Scrubber-High Efficiency w/o Lime

CE 067 Wet Scrubber-High Efficiency w/o Lime

CE 068 Wet Scrubber-High Efficiency w/o Lime

CE 069 Wet Scrubber-High Efficiency w/o Lime

EU 075 Tertiary Crusher L7

EU 076 Tertiary Crusher L8

EU 077 Tertiary Crusher L9

EU 078 Tertiary Crusher L10

EU 079 Tertiary Crusher L11

EU 080 Tertiary Crusher L12

EU 081 Tertiary Crusher L13

EU 082 Tertiary Crusher L14

EU 083 Tertiary Crusher L15

EU 084 Tertiary Crusher L16

EU 128 Tertiary Crusher L18

EU 129 Tertiary Crusher L19

EU 130 Tertiary Crusher L20

EU 131 Tertiary Crusher L21

EU 132 Tertiary Crusher L22

EU 133 Tertiary Crusher L23

EU 134 Tertiary Crusher L24

EU 135 Tertiary Crusher L25

EU 136 Tertiary Crusher L26

EU 137 Tertiary Crusher L27

EU 138 Tertiary Crusher L28

SV 044 Tertiary Crusher L7

SV 045 Tertiary Crusher L8

SV 046 Tertiary Crusher L9
TABLE A: LIMITS AND OTHER REQUIREMENTS

US Steel Corp - Minntac

13700005 - 006

Facility Name:

Permit Number:

A-33 06/05/13

Associated Items: SV 047 Tertiary Crusher L10

SV 048 Tertiary Crusher L11

SV 049 Tertiary Crusher L12

SV 050 Tertiary Crusher L13

SV 051 Tertiary Crusher L14

SV 052 Tertiary Crusher L15

SV 053 Tertiary Crusher L16

SV 073 Tertiary Crusher L18

SV 074 Tertiary Crusher L19

SV 075 Tertiary Crusher L20

SV 076 Tertiary Crusher L21

SV 077 Tertiary Crusher L22

SV 078 Tertiary Crusher L23

SV 079 Tertiary Crusher L24

SV 080 Tertiary Crusher L25

SV 081 Tertiary Crusher L26

SV 082 Tertiary Crusher L27

SV 083 Tertiary Crusher L28

What to do Why to do it

A. POLLUTANT LIMITS hdr

Total Particulate Matter: less than or equal to 0.3 grains/dry standard cubic foot of

exhaust gas unless required to further reduce emissions to comply with the less

stringent limit of either Minn R. 7011.0730 or Minn. R. 7011.0735; or, alternatively,

as below:

Minn. R. 7011.0715, subp. 1(A)

Total Particulate Matter: greater than or equal to 85 percent collection efficiency ,

provided that the entire emission facility is in compliance with NAAQS and MAAQS,

and the emission facility is located not less than one-forth mile from any residence

or public roadway. (This is an alternative demonstration of compliance to Total

Particulate Matter Limit.)

Minn. R. 7011.0715, subp. 3

Opacity: less than or equal to 20 percent opacity Minn. R. 7011.0715, subp. 1(B)

B. CONTROL EQUIPMENT MONITORING hdr

Gas Stream Pressure Drop: Upon installation of monitoring equipment, monitor

and record at least once every day when in operation. Once the operating range is

established it becomes an enforceable part of this permit. A deviation from the

established range shall trigger a corrective action as detailed in the O&M plan.

Minn. R. 7007.0800, subp. 4(D); subp. 14; subp. 16(J)

Liquid Flow Rate: Upon installation of monitoring equipment, monitor and record

at least once every day when in operation. Once the operating range is established

it becomes an enforceable part of this permit. A deviation from the established

range shall trigger a corrective action as detailed in the O&M plan.

Minn. R. 7007.0800, subp. 4(D); subp. 14; subp. 16(J)

C. PERFORMANCE TESTING REQUIREMENTS hdr

Initial Performance Test: due 730 days after 11/30/2004 on three stacks to

measure PM emission.

Minn. R. 7017.2020, subp. 1

Performance Test: due before end of each 60 months following Initial Performance

Test on two stacks that were not tested in the previous 60-month period to measure

PM emission.

Minn. R. 7017.2020, subp. 1

Performance Test Pre-test Meeting: due 7 days before Performance Test Minn. R. 7017.2030, subp. 4
TABLE A: LIMITS AND OTHER REQUIREMENTS

US Steel Corp - Minntac

13700005 - 006

Facility Name:

Permit Number:

A-34 06/05/13

Subject Item: GP 019 Pre-1969 ore transfer to bins

Associated Items: CE 073 Wet Scrubber-High Efficiency w/o Lime

CE 074 Wet Scrubber-High Efficiency w/o Lime

CE 075 Wet Scrubber-High Efficiency w/o Lime

EU 144 Conveyor Transfer 009-020

EU 145 Conveyor Transfer 009-020

EU 148 Storage Bin L1,2

EU 149 Storage Bin L1,2

EU 150 Storage Bin L1,2

EU 151 Storage Bin L1,2

EU 152 Storage Bin L1,2

EU 153 Storage Bin L1,2

EU 154 Storage Bin L1,2

EU 155 Storage Bin L3,4

EU 156 Storage Bin L3,4

EU 157 Storage Bin L3,4

EU 158 Storage Bin L3,4

EU 159 Storage Bin L3,4

EU 160 Storage Bin L3,4

EU 161 Storage Bin L3,4

EU 162 Storage Bin L5,6

EU 163 Storage Bin L5,6

EU 164 Storage Bin L5,6

EU 165 Storage Bin L5,6

EU 166 Storage Bin L5,6

EU 167 Storage Bin L5,6

EU 168 Storage Bin L5,6

SV 088 Storage Bin L1, 2

SV 089 Storage Bin L3, 4

SV 090 Storage Bin L5, 6

What to do Why to do it

A. POLLUTANT LIMITS hdr

Total Particulate Matter: less than or equal to 0.3 grains/dry standard cubic foot of

exhaust gas unless required to further reduce emissions to comply with the less

stringent limit of either Minn R. 7011.0730 or Minn. R. 7011.0735; or, alternatively,

as below:

Minn. R. 7011.0710, subp. 1(A)

Total Particulate Matter: greater than or equal to 85 percent collection efficiency ,

provided that the entire emission facility is in compliance with NAAQS and MAAQS,

and the emission facility is located not less than one-forth mile from any residence

or public roadway. (This is an alternative demonstration of compliance to Total

Particulate Matter Limit.)

Minn. R. 7011.0710, subp. 3

Opacity: less than or equal to 20 percent opacity except for one six-minute period

per hour of not more than 60 percent opacity.

Minn. R. 7011.0710, subp. 1(B)

B. CONTROL EQUIPMENT MONITORING hdr

Gas Stream Pressure Drop: Upon installation of monitoring equipment, monitor

and record at least once every day when in operation. Once the operating range is

established it becomes an enforceable part of this permit. A deviation from the

established range shall trigger a corrective action as detailed in the O&M plan.

Minn. R. 7007.0800, subp. 4(D); subp. 14; subp. 16(J)
TABLE A: LIMITS AND OTHER REQUIREMENTS

US Steel Corp - Minntac

13700005 - 006

Facility Name:

Permit Number:

A-35 06/05/13

Liquid Flow Rate: Upon installation of monitoring equipment, monitor and record

at least once every day when in operation. Once the operating range is established

it becomes an enforceable part of this permit. A deviation from the established

range shall trigger a corrective action as detailed in the O&M plan.

Minn. R. 7007.0800, subp. 4(D); subp. 14; subp. 16(J)

C. PERFORMANCE TESTING REQUIREMENTS hdr

Initial Performance Test: due 180 days after 11/07/2003 on two stacks to measure

PM emission, and on all stacks to measure Opacity emission.

Minn. R. 7017.2020, subp. 1

Performance Test Pre-test Meeting: due 7 days before Performance Test Minn. R. 7017.2030, subp. 4
TABLE A: LIMITS AND OTHER REQUIREMENTS

US Steel Corp - Minntac

13700005 - 006

Facility Name:

Permit Number:

A-36 06/05/13

Subject Item: GP 020 Post-1969 ore transfer to bins

Associated Items: CE 072 Wet Scrubber-High Efficiency w/o Lime

CE 076 Wet Scrubber-High Efficiency w/o Lime

CE 077 Wet Scrubber-High Efficiency w/o Lime

CE 078 Wet Scrubber-High Efficiency w/o Lime

CE 079 Wet Scrubber-High Efficiency w/o Lime

CE 080 Wet Scrubber-High Efficiency w/o Lime

CE 081 Wet Scrubber-High Efficiency w/o Lime

CE 082 Wet Scrubber-High Efficiency w/o Lime

EU 146 Conveyor Transfer 009-020

EU 147 Conveyor Transfer 009-020

EU 169 Storage Bin L7,8

EU 170 Storage Bin L7,8

EU 171 Storage Bin L7,8

EU 172 Storage Bin L7,8

EU 173 Storage Bin L7,8

EU 174 Storage Bin L7,8

EU 175 Storage Bin L7,8

EU 176 Storage Bin L9,10

EU 177 Storage Bin L9,10

EU 178 Storage Bin L9,10

EU 179 Storage Bin L9,10

EU 180 Storage Bin L9,10

EU 181 Storage Bin L9,10

EU 182 Storage Bin L9,10

EU 183 Storage Bin L11,12

EU 184 Storage Bin L11,12

EU 185 Storage Bin L11,12

EU 186 Storage Bin L11,12

EU 187 Storage Bin L11,12

EU 188 Storage Bin L11,12

EU 189 Storage Bin L11,12

EU 190 Conveyor Transfer 009-020

EU 191 Conveyor Transfer 009-020

EU 192 Conveyor Transfer 009-020

EU 193 Conveyor Transfer 009-020

EU 194 Storage Bin L13,14

EU 195 Storage Bin L13,14

EU 196 Storage Bin L13,14

EU 197 Storage Bin L13,14

EU 198 Storage Bin L13,14

EU 199 Storage Bin L13,14

EU 200 Storage Bin L13,14

EU 201 Storage Bin L15,16

EU 202 Storage Bin L15,16

EU 203 Storage Bin L15,16
TABLE A: LIMITS AND OTHER REQUIREMENTS

US Steel Corp - Minntac

13700005 - 006

Facility Name:

Permit Number:

A-37 06/05/13

Associated Items: EU 204 Storage Bin L15,16

EU 205 Storage Bin L15,16

EU 206 Storage Bin L15,16

EU 207 Storage Bin L15,16

EU 208 Storage Bin L17,18

EU 209 Storage Bin L17,18

EU 210 Storage Bin L17,18

EU 211 Storage Bin L17,18

EU 212 Storage Bin L17,18

EU 213 Storage Bin L17,18

EU 214 Storage Bin L17,18

SV 087 Conveyor Transfer 009-020

SV 091 Storage Bin L7, 8

SV 092 Storage Bin L9, 10

SV 093 Storage Bin L11, 12

SV 094 Conveyor Transfer 009-020

SV 095 Storage Bin L13, 14

SV 096 Storage Bin L15, 16

SV 097 Storage Bin L17, 18

What to do Why to do it

A. POLLUTANT LIMITS hdr

Total Particulate Matter: less than or equal to 0.3 grains/dry standard cubic foot of

exhaust gas unless required to further reduce emissions to comply with the less

stringent limit of either Minn R. 7011.0730 or Minn. R. 7011.0735; or, alternatively,

as below:

Minn. R. 7011.0715, subp. 1(A)

Total Particulate Matter: greater than or equal to 85 percent collection efficiency ,

provided that the entire emission facility is in compliance with NAAQS and MAAQS,

and the emission facility is located not less than one-forth mile from any residence

or public roadway. (This is an alternative demonstration of compliance to Total

Particulate Matter Limit.)

Minn. R. 7011.0715, subp. 3

Opacity: less than or equal to 20 percent opacity Minn. R. 7011.0715, subp. 1(B)

B. CONTROL EQUIPMENT MONITORING hdr

Gas Stream Pressure Drop: Upon installation of monitoring equipment, monitor

and record at least once every day when in operation. Once the operating range is

established it becomes an enforceable part of this permit. A deviation from the

established range shall trigger a corrective action as detailed in the O&M plan.

Minn. R. 7007.0800, subp. 4(D); subp. 14; subp. 16(J)

Liquid Flow Rate: Upon installation of monitoring equipment, monitor and record

at least once every day when in operation. Once the operating range is established

it becomes an enforceable part of this permit. A deviation from the established

range shall trigger a corrective action as detailed in the O&M plan.

Minn. R. 7007.0800, subp. 4(D); subp. 14; subp. 16(J)

C. PERFORMANCE TESTING REQUIREMENTS hdr

Initial Performance Test: due 730 days after 11/30/2004 on two stacks to measure

PM emission, and on all stacks to measure Opacity emission.

Minn. R. 7017.2020, subp. 1

Performance Test: due before end of each 60 months following Initial Performance

Test on two stacks that were not tested in the previous 60-month period to measure

PM emission, and on all stacks to measure Opacity emission.

Minn. R. 7017.2020, subp. 1

Performance Test Pre-test Meeting: due 7 days before Performance Test Minn. R. 7017.2030, subp. 4
TABLE A: LIMITS AND OTHER REQUIREMENTS

US Steel Corp - Minntac

13700005 - 006

Facility Name:

Permit Number:

A-38 06/05/13

Subject Item: GP 021 Pre-1969 mixing & pellet handling for Step I

Associated Items: CE 083 Fabric Filter - Low Temperature, i.e., T<180 Degrees F

CE 084 Wet Scrubber-High Efficiency w/o Lime

CE 085 Wet Scrubber-High Efficiency w/o Lime

CE 089 Wet Scrubber-High Efficiency w/o Lime

CE 090 Wet Scrubber-High Efficiency w/o Lime

CE 091 Wet Scrubber-High Efficiency w/o Lime

CE 092 Wet Scrubber-High Efficiency w/o Lime

EU 217 L3 Bentonite Blending

EU 218 L3 Bentonite Blending

EU 219 L3 Bentonite Blending

EU 220 L3 Bentonite Blending

EU 221 L3 Grate Feed

EU 222 L3 Grate Discharge

EU 228 L3 Cooler Discharge

EU 229 L3 Feeder 041/046 Belts

EU 230 L3 041/046 Conveyor Belt Vent

EU 231 L3 041/046 Conveyor Belt Vent

EU 232 S1 Conveyor Transfer 042-043

EU 233 S1 Conveyor Transfer 042-043

EU 234 L3 Conveyor Transfer 041-042

EU 235 L3 Conveyor Transfer 041-042

SV 101 L3 Grate Feed

SV 102 L3 Grate Discharge

SV 105 L3 Cooler Dump Zone

SV 106 L3 Feeder 041, 046 Belts

SV 107 L3 041/046 Conveyor Belt Vent

SV 108 S1 Conveyor Transfer 042-043

SV 109 L1 Conveyor Transfer 041-042

What to do Why to do it

A. POLLUTANT LIMITS hdr

Total Particulate Matter: less than or equal to 0.3 grains/dry standard cubic foot of

exhaust gas unless required to further reduce emissions to comply with the less

stringent limit of either Minn R. 7011.0730 or Minn. R. 7011.0735; or, alternatively,

as below:

Minn. R. 7011.0710, subp. 1(A)

Total Particulate Matter: greater than or equal to 85 percent collection efficiency ,

provided that the entire emission facility is in compliance with NAAQS and MAAQS,

and the emission facility is located not less than one-forth mile from any residence

or public roadway. (This is an alternative demonstration of compliance to Total

Particulate Matter Limit.)

Minn. R. 7011.0710, subp. 3

Opacity: less than or equal to 20 percent opacity except for one six-minute period

per hour of not more than 60 percent opacity.

Minn. R. 7011.0710, subp. 1(B)

B. CONTROL EQUIPMENT MONITORING hdr

Gas Stream Pressure Drop: Monitor and record as least once every day when in

operation, once the pressure gauge is installed for each piece of control equipment

in this group. Complete pressure drop monitoring equipment debugging,

trouble-shooting, and establishment of parameter range within 180 days of

installation.

Minn. R. 7007.0800, subp. 4(D); subp. 14; subp. 16(J)
TABLE A: LIMITS AND OTHER REQUIREMENTS

US Steel Corp - Minntac

13700005 - 006

Facility Name:

Permit Number:

A-39 06/05/13

Liquid Flow Rate for Wet Scrubbers: Monitor and record as least once every day

when in operation, once the monitoring equipment is installed for each piece of wet

scrubbers in this group. Complete monitoring equipment debugging,

trouble-shooting, and establishment of parameter range within 180 days of

installation.

Minn. R. 7007.0800, subp. 4(D); subp. 14; subp. 16(J)

Process Monitoring: the visual emissions observer in the facility staff shall check

stack visible emissions (opacity) for SV 100 (CE 083) once daily using a checklist

that at a minimum contains the information required in Appendix B. If the Permittee

uses for CE 083 a broken bag detector approved by the MPCA, the Permittee does

not need to conduct visible emissions checks for SV 100.

Minn. R. 7007.0800, subp. 4(D); 14; 16(J)

C. PERFORMANCE TESTING REQUIREMENTS hdr

Initial Performance Test: due 365 days after 11/07/2003 on SV 105 and another

stack to measure PM and Opacity emissions.

Minn. R. 7017.2020, subp. 1

Performance Test Pre-test Meeting: due 7 days before Performance Test Minn. R. 7017.2030, subp. 4
TABLE A: LIMITS AND OTHER REQUIREMENTS

US Steel Corp - Minntac

13700005 - 006

Facility Name:

Permit Number:

A-40 06/05/13

Subject Item: GP 022 Post-1969 cooler vent stacks for Steps II & III

Associated Items: EU 263 L4 Pellet Cooler Vent Stack

EU 284 L5 Pellet Cooler Vent Stack

EU 397 L6 Pellet Cooler Vent Stack

EU 398 L7 Pellet Cooler Vent Stack

SV 119 L4 Cooler Vent Stack

SV 128 L5 Cooler Vent Stack

SV 196 L6 Pellet Cooler Stack

SV 197 L7 Pellet Cooler Stack

What to do Why to do it

A. POLLUTANT LIMITS hdr

Total Particulate Matter: less than or equal to 0.3 grains/dry standard cubic foot of

exhaust gas unless required to further reduce emissions to comply with the less

stringent limit of either Minn R. 7011.0730 or Minn. R. 7011.0735.

Minn. R. 7011.0715, subp. 1(A)

Opacity: less than or equal to 20 percent opacity Minn. R. 7011.0715, subp. 1(B)

B. OPERATION REQUIREMENTS hdr

Process Monitoring: the visual emissions observer in the facility staff shall check

stack visible emissions (opacity) once daily using a checklist that at a minimum

contains the information required in Appendix B.

Minn. R. 7007.0800, subp. 4(D); 14; 16(J)

C. PERFORMANCE TESTING REQUIREMENTS hdr

Initial Performance Test: due 365 days after 11/30/2004 on all stacks to measure

PM and Opacity emissions.

Minn. R. 7017.2020, subp. 1

Performance Test: due before end of each year following Initial Performance Test

on all stacks to measure PM and Opacity emissions. After at least three years of

performance testing data are submitted, the Permittee may request that future

testing be scheduled according to a test frequency plan proposed based on

submitted testing data.

Minn. R. 7017.2020, subp. 1

Performance Test Pre-test Meeting: due 7 days before Performance Test Minn. R. 7017.2030, subp. 4
TABLE A: LIMITS AND OTHER REQUIREMENTS

US Steel Corp - Minntac

13700005 - 006

Facility Name:

Permit Number:

A-41 06/05/13

Subject Item: GP 023 Pre-1969 bentonite equipment

Associated Items: CE 093 Fabric Filter - Low Temperature, i.e., T<180 Degrees F

CE 094 Fabric Filter - Low Temperature, i.e., T<180 Degrees F

CE 095 Fabric Filter - Low Temperature, i.e., T<180 Degrees F

EU 236 S1 Bentonite Storage Bin

EU 237 S1 Bentonite Storage Bin

EU 238 S1 Bentonite Storage Bin

EU 239 L2,3 Bentonite Day Bin

EU 240 L2,3 Bentonite Day Bin

EU 241 L2,3 Bentonite Day Bin

EU 242 L2,3 Bentonite Day Bin

EU 243 S1,2 Bentonite Unloading

SV 110 S1 Bentonite Storage Bin

SV 111 L2, 3 Bentonite Day Bin

SV 112 S1, 2 Bentonite Unloading

What to do Why to do it

A. POLLUTANT LIMITS hdr

Total Particulate Matter: less than or equal to 0.3 grains/dry standard cubic foot of

exhaust gas unless required to further reduce emissions to comply with the less

stringent limit of either Minn R. 7011.0730 or Minn. R. 7011.0735; or, alternatively,

as below:

Minn. R. 7011.0710, subp. 1(A)

Total Particulate Matter: greater than or equal to 85 percent collection efficiency ,

provided that the entire emission facility is in compliance with NAAQS and MAAQS,

and the emission facility is located not less than one-forth mile from any residence

or public roadway. (This is an alternative demonstration of compliance to Total

Particulate Matter Limit.)

Minn. R. 7011.0710, subp. 3

Opacity: less than or equal to 20 percent opacity except for one six-minute period

per hour of not more than 60 percent opacity.

Minn. R. 7011.0710, subp. 1(B)

B. CONTROL EQUIPMENT MONITORING hdr

Gas Stream Pressure Drop: Monitor and record as least once every day when in

operation, once the pressure gauge is installed for each piece of control equipment

in this group. Complete pressure drop monitoring equipment debugging,

trouble-shooting, and establishment of parameter range within 180 days of

installation.

Minn. R. 7007.0800, subp. 4(D); subp. 14; subp. 16(J)

Process Monitoring: the visual emissions observer in the facility staff shall check

stack visible emissions (opacity) once daily using a checklist that at a minimum

contains the information required in Appendix B. If the Permittee uses for a control

device a broken bag detector approved by the MPCA, the Permittee does not need

to conduct visible emissions checks for the stack associated with the control device

in this group.

Minn. R. 7007.0800, subp. 4(D); 14; 16(J)

C. PERFORMANCE TESTING REQUIREMENTS hdr

Initial Performance Test: due 730 days after 11/07/2003 on one stack to measure

PM emission, and on all stacks to measure Opacity emission.

Minn. R. 7017.2020, subp. 1

Performance Test Pre-test Meeting: due 7 days before Performance Test Minn. R. 7017.2030, subp. 4
TABLE A: LIMITS AND OTHER REQUIREMENTS

US Steel Corp - Minntac

13700005 - 006

Facility Name:

Permit Number:

A-42 06/05/13

Subject Item: GP 024 Post-1969 bentonite equipment

Associated Items: CE 096 Fabric Filter - Low Temperature, i.e., T<180 Degrees F

CE 097 Fabric Filter - Low Temperature, i.e., T<180 Degrees F

CE 107 Fabric Filter - Low Temperature, i.e., T<180 Degrees F

CE 118 Fabric Filter - Low Temperature, i.e., T<180 Degrees F

CE 119 Fabric Filter - Low Temperature, i.e., T<180 Degrees F

CE 129 Fabric Filter - Low Temperature, i.e., T<180 Degrees F

CE 142 Fabric Filter - Low Temperature, i.e., T<180 Degrees F

EU 244 S2 Bentonite Storage Bin

EU 245 S2 Bentonite Storage Bin

EU 246 S2 Bentonite Storage Bin

EU 247 L4 Bentonite Day Bins

EU 248 L4 Bentonite Day Bins

EU 249 L4 Bentonite Day Bins

EU 250 L4 Bentonite Day Bins

EU 251 L4 Bentonite Day Bins

EU 268 L5 Bentonite Day Bins

EU 269 L5 Bentonite Day Bins

EU 270 L5 Bentonite Day Bins

EU 271 L5 Bentonite Day Bins

EU 272 L5 Bentonite Day Bins

EU 297 S3 Bentonite Storage

EU 298 S3 Bentonite Storage

EU 299 S3 Bentonite Storage

EU 300 S3 Ben storage+unloading hopper

EU 301 L6 Bentonite Day Bin

EU 302 L6 Bentonite Day Bin

EU 303 L6 Bentonite Day Bin

EU 304 L6 Bentonite Day Bin

EU 305 L6 Bentonite Day Bin

EU 320 L7 Bentonite Day Bin

EU 321 L7 Bentonite Day Bin

EU 322 L7 Bentonite Day Bin

EU 323 L7 Bentonite Day Bin

EU 324 L7 Bentonite Day Bin

SV 113 S2 Bentonite Storage Bin

SV 114 L4 Bentonite Day Bin

SV 123 L5 Bentonite Day Bin

SV 139 S3 Bentonite Storage

SV 140 L6 Bentonite Day Bin

SV 147 L7 Bentonite Day Bin

SV 193 Step III Bentonite Storage Baghouse

What to do Why to do it

A. POLLUTANT LIMITS hdr
TABLE A: LIMITS AND OTHER REQUIREMENTS

US Steel Corp - Minntac

13700005 - 006

Facility Name:

Permit Number:

A-43 06/05/13

Total Particulate Matter: less than or equal to 0.3 grains/dry standard cubic foot of

exhaust gas unless required to further reduce emissions to comply with the less

stringent limit of either Minn R. 7011.0730 or Minn. R. 7011.0735; or, alternatively,

as below:

Minn. R. 7011.0715, subp. 1(A)

Total Particulate Matter: greater than or equal to 85 percent collection efficiency ,

provided that the entire emission facility is in compliance with NAAQS and MAAQS,

and the emission facility is located not less than one-forth mile from any residence

or public roadway. (This is an alternative demonstration of compliance to Total

Particulate Matter Limit.)

Minn. R. 7011.0715, subp. 3

Opacity: less than or equal to 20 percent opacity Minn. R. 7011.0715, subp. 1(B)

B. CONTROL EQUIPMENT MONITORING hdr

Gas Stream Pressure Drop: Upon installation of monitoring equipment, monitor

and record at least once every day when in operation. Once the operating range is

established it becomes an enforceable part of this permit. A deviation from the

established range shall trigger a corrective action as detailed in the O&M plan.

Minn. R. 7007.0800, subp. 4(D); subp. 14; subp. 16(J)

Process Monitoring: the visual emissions observer in the facility staff shall check

stack visible emissions (opacity) once daily using a checklist that at a minimum

contains the information required in Appendix B. If the Permittee uses for a control

device a broken bag detector approved by the MPCA, the Permittee does not need

to conduct visible emissions checks for the stack associated with the control device

in this group.

Minn. R. 7007.0800, subp. 4(D); 14; 16(J)

C. PERFORMANCE TESTING REQUIREMENTS hdr

Initial Performance Test: due 730 days after 11/07/2003 on one stack to measure

PM emission, and on all stacks to measure Opacity emission.

Minn. R. 7017.2020, subp. 1

Performance Test Pre-test Meeting: due 7 days before Performance Test Minn. R. 7017.2030, subp. 4
TABLE A: LIMITS AND OTHER REQUIREMENTS

US Steel Corp - Minntac

13700005 - 006

Facility Name:

Permit Number:

A-44 06/05/13

Subject Item: GP 025 Post-1969 mixers for Steps II & III

Associated Items: CE 098 Fabric Filter - Low Temperature, i.e., T<180 Degrees F

CE 099 Wet Scrubber-High Efficiency w/o Lime

CE 100 Wet Scrubber-High Efficiency w/o Lime

CE 108 Fabric Filter - Low Temperature, i.e., T<180 Degrees F

CE 109 Wet Scrubber-High Efficiency w/o Lime

CE 110 Wet Scrubber-High Efficiency w/o Lime

CE 120 Fabric Filter - Low Temperature, i.e., T<180 Degrees F

CE 121 Wet Scrubber-High Efficiency w/o Lime

CE 122 Wet Scrubber-High Efficiency w/o Lime

CE 130 Fabric Filter - Low Temperature, i.e., T<180 Degrees F

CE 131 Wet Scrubber-High Efficiency w/o Lime

CE 132 Wet Scrubber-High Efficiency w/o Lime

EU 252 L4 Bentonite Blending

EU 253 L4 Bentonite Blending

EU 254 L4 Bentonite Blending

EU 255 L4 Bentonite Blending

EU 256 L4 Bentonite Blending

EU 257 L4 Grate Feed

EU 258 L4 Grate Discharge

EU 273 L5 Bentonite Blending

EU 274 L5 Bentonite Blending

EU 275 L5 Bentonite Blending

EU 276 L5 Bentonite Blending

EU 277 L5 Bentonite Blending

EU 278 L5 Grate Feed

EU 279 L5 Grate Discharge

EU 306 L6 Bentonite Blending

EU 307 L6 Bentonite Blending

EU 308 L6 Bentonite Blending

EU 309 L6 Bentonite Blending

EU 310 L6 Bentonite Blending

EU 311 L6 Grate Feed

EU 312 L6 Grate Discharge

EU 325 L7 Bentonite Blending

EU 326 L7 Bentonite Blending

EU 327 L7 Bentonite Blending

EU 328 L7 Bentonite Blending

EU 329 L7 Bentonite Blending

EU 330 L7 Grate Feed

EU 331 L7 Grate Discharge

SV 115 L4 Bentonite Blending

SV 116 L4 Grate Feed

SV 117 L4 Grate Discharge

SV 124 L5 Bentonite Blending

SV 125 L5 Grate Feed
TABLE A: LIMITS AND OTHER REQUIREMENTS

US Steel Corp - Minntac

13700005 - 006

Facility Name:

Permit Number:

A-45 06/05/13

Associated Items: SV 126 L5 Grate Discharge

SV 141 L6 Bentonite Blending

SV 142 L6 Grate Feed

SV 143 L6 Grate Discharge

SV 148 L7 Bentonite Blending

SV 149 L7 Grate Feed

SV 150 L7 Grate Discharge

What to do Why to do it

A. POLLUTANT LIMITS hdr

Total Particulate Matter: less than or equal to 0.3 grains/dry standard cubic foot of

exhaust gas unless required to further reduce emissions to comply with the less

stringent limit of either Minn R. 7011.0730 or Minn. R. 7011.0735; or, alternatively,

as below:

Minn. R. 7011.0715, subp. 1(A)

Total Particulate Matter: greater than or equal to 85 percent collection efficiency ,

provided that the entire emission facility is in compliance with NAAQS and MAAQS,

and the emission facility is located not less than one-forth mile from any residence

or public roadway. (This is an alternative demonstration of compliance to Total

Particulate Matter Limit.)

Minn. R. 7011.0715, subp. 3

Opacity: less than or equal to 20 percent opacity Minn. R. 7011.0715, subp. 1(B)

B. CONTROL EQUIPMENT MONITORING hdr

Gas Stream Pressure Drop: Monitor and record as least once every day when in

operation, once the pressure gauge is installed for each piece of control equipment

in this group. Complete pressure drop monitoring equipment debugging,

trouble-shooting, and establishment of parameter range within 180 days of

installation.

Minn. R. 7007.0800, subp. 4(D); subp. 14; subp. 16(J)

Liquid Flow Rate for Wet Scrubbers: Monitor and record as least once every day

when in operation, once the monitoring equipment is installed for each piece of wet

scrubbers in this group. Complete monitoring equipment debugging,

trouble-shooting, and establishment of parameter range within 180 days of

installation.

Minn. R. 7007.0800, subp. 4(D); subp. 14; subp. 16(J)

Process Monitoring: the visual emissions observer in the facility staff shall check

stack visible emissions (opacity) for SV 115, SV 124, SV 141, and SV 148 once

daily using a checklist that at a minimum contains the information required in

Appendix B. If the Permittee uses for a fabric filter (CE 098, CE 108, CE 120, or

CE 130) a broken bag detector approved by the MPCA, the Permittee does not

need to conduct visible emissions checks for the stack controlled by that fibric filter

(SV 115, SV 124, SV 141, or SV 148, respectively).

Minn. R. 7007.0800, subp. 4(D); 14; 16(J)

C. PERFORMANCE TESTING REQUIREMENTS hdr

Initial Performance Test: due 730 days after 11/07/2003 on one stack from (SV

116, 117, 125, 126, 142, 143, 149, or 150) and another stack to measure PM and

Opacity emissions.

Minn. R. 7017.2020, subp. 1

Performance Test Pre-test Meeting: due 7 days before Performance Test Minn. R. 7017.2030, subp. 4
TABLE A: LIMITS AND OTHER REQUIREMENTS

US Steel Corp - Minntac

13700005 - 006

Facility Name:

Permit Number:

A-46 06/05/13

Subject Item: GP 026 Post-1969 pellet handling for Steps II and III

Associated Items: CE 104 Wet Scrubber-High Efficiency w/o Lime

CE 105 Wet Scrubber-High Efficiency w/o Lime

CE 114 Wet Scrubber-High Efficiency w/o Lime

CE 115 Wet Scrubber-High Efficiency w/o Lime

CE 117 Wet Scrubber-High Efficiency w/o Lime

CE 127 Wet Scrubber-High Efficiency w/o Lime

CE 137 Wet Scrubber-High Efficiency w/o Lime

EU 265 L4 Cooler Discharge

EU 286 L5 Cooler Discharge

EU 295 S3 Conveyor Transfer

EU 296 S3 Conveyor Transfer

EU 317 L6 Cooler Dump zone 

EU 336 L7 Cooler Dump Zone 

EU 339 Step I 043/044 Conveyor Transfer

EU 340 Step I 043/044 Conveyor Transfer

SV 120 L4 Conveyor Transfer Feeder

SV 121 L4 Cooler Dump Zone

SV 129 L5 Conveyor Transfer Feeder

SV 130 L5 Cooler Dump Zone

SV 138 S3 Conveyor Transfer

SV 146 L6 Conveyor Transfer

SV 153 L7 Conveyor Transfer

SV 154 Step I 043/044 Conv. Trans

SV 155 Step I 043/044 Conv. Trans

What to do Why to do it

A. POLLUTANT LIMITS hdr

Total Particulate Matter: less than or equal to 0.3 grains/dry standard cubic foot of

exhaust gas unless required to further reduce emissions to comply with the less

stringent limit of either Minn R. 7011.0730 or Minn. R. 7011.0735; or, alternatively,

as below:

Minn. R. 7011.0715, subp. 1(A)

Total Particulate Matter: greater than or equal to 85 percent collection efficiency ,

provided that the entire emission facility is in compliance with NAAQS and MAAQS,

and the emission facility is located not less than one-forth mile from any residence

or public roadway. (This is an alternative demonstration of compliance to Total

Particulate Matter Limit.)

Minn. R. 7011.0715, subp. 3

Opacity: less than or equal to 20 percent opacity Minn. R. 7011.0715, subp. 1(B)

B. CONTROL EQUIPMENT MONITORING hdr

Pressure Drop: greater than or equal to 13.5 inches of water column using 8-hour

Block Average on the gas stream. A deviation from the established range shall

trigger a corrective action as detailed in the O&M plan.

Minn. R. 7007.0800, subp. 4(D); subp. 14; subp. 16(J);

7017.2025, subp. 3

Liquid Flow Rate: greater than or equal to 297 gallons/minute using 8-hour Block

Average on the wet scrubber. A deviation from the established range shall trigger a

corrective action as detailed in the O&M plan.

Minn. R. 7007.0800, subp. 4(D); subp. 14; subp. 16(J);

7017.2025, subp. 3

C. PERFORMANCE TESTING REQUIREMENTS hdr

Initial Performance Test: due 365 days after 11/07/2003 on one stack from (SV

121, 130, 146, or 153) and another stack to measure PM and Opacity emissions.

Minn. R. 7017.2020, subp. 1

Performance Test Pre-test Meeting: due 7 days before Performance Test Minn. R. 7017.2030, subp. 4
TABLE A: LIMITS AND OTHER REQUIREMENTS

US Steel Corp - Minntac

13700005 - 006

Facility Name:

Permit Number:

A-47 06/05/13

Subject Item: GP 027 Post-1969 conveyor transfer points without APCE

Associated Items: EU 289 Step I 043 Conveyor Vents

EU 290 Step I 043 Conveyor Vents

EU 291 Step I 043 Conveyor Vents

EU 292 Step I 043 Conveyor Vents

EU 293 Step I 043 Conveyor Vents

EU 294 Step I 043 Conveyor Vents

EU 318 L6 Conveyor Transfer 

EU 319 L6 Conveyor Transfer 

EU 337 L7 Conveyor Transfer 

EU 338 L7 Conveyor Transfer 

EU 341 Step III 042 Conveyor Vent

EU 342 Step III 042 Conveyor Vent

EU 343 Step III 043 Conveyor Vent

EU 344 Step III 043 Conveyor Vent

EU 345 Step III 044 Conveyor Vent

EU 346 Step III 044 Conveyor Vent

EU 347 Step III 044 Conveyor Vent

EU 348 Step III 044 Conveyor Vent

EU 349 Step III 044 Conveyor Vent

EU 350 Step III 044 Conveyor Vent

EU 351 Step III 044 Conveyor Vent

EU 352 Step III 044 Conveyor Vent

EU 353 Step III 044 Conveyor Vent

EU 354 Step III 044 Conveyor Vent

EU 355 Step III 044 Conveyor Vent

EU 356 Step III 044 Conveyor Vent

EU 357 Step III 044 Conveyor Vent

EU 358 Step III 044 Conveyor Vent

EU 359 Step III 043/044 Conveyor Transfer

EU 360 Step III 043/044 Conveyor Transfer

EU 361 Step III 043/044 Conveyor Transfer

EU 362 Step III 043/044 Conveyor Transfer

EU 363 Step III 044-6/044-7 Conveyor Transfer

EU 364 Step III 044-6/044-7 Conveyor Transfer

EU 365 Step III 044-6/044-7 Conveyor Transfer

EU 366 Step III Pellet Loadout

SV 132 Step I 043 Conveyor Vents

SV 133 Step I 043 Conveyor Vents

SV 134 Step I 043 Conveyor Vents

SV 135 Step I 043 Conveyor Vents

SV 136 Step I 043 Conveyor Vents

SV 137 Step I 043 Conveyor Vents

SV 156 Step III 042 Conveyor Vent

SV 157 Step III 042 Conveyor Vent

SV 158 Step III 043 Conveyor Vent
TABLE A: LIMITS AND OTHER REQUIREMENTS

US Steel Corp - Minntac

13700005 - 006

Facility Name:

Permit Number:

A-48 06/05/13

Associated Items: SV 159 Step III 043 Conveyor Vent

SV 160 Step III 044 Conveyor Vent

SV 161 Step III 044 Conveyor Vent

SV 162 Step III 044 Conveyor Vent

SV 163 Step III 044 Conveyor Vent

SV 164 Step III 044 Conveyor Vent

SV 165 Step III 044 Conveyor Vent

SV 166 Step III 044 Conveyor Vent

SV 167 Step III 044 Conveyor Vent

SV 168 Step III 044 Conveyor Vent

SV 169 Step III 044 Conveyor Vent

SV 170 Step III 044 Conveyor Vent

SV 171 Step III 044 Conveyor Vent

SV 172 Step III 044 Conveyor Vent

SV 173 Step III 044 Conveyor Vent

SV 174 Step III 043/044 Conveyor Transfer

SV 175 Step III 043/044 Conveyor Transfer

SV 176 Step III 043/044 Conveyor Transfer

SV 177 Step III 043/044 Conveyor Transfer

SV 178 Step III 044-6/044-7 Conveyor Transfer

SV 179 Step III 044-6/044-7 Conveyor Transfer

SV 180 Step III Pellet Loadout

What to do Why to do it

A. POLLUTANT LIMITS hdr

Total Particulate Matter: less than or equal to 0.3 grains/dry standard cubic foot of

exhaust gas unless required to further reduce emissions to comply with the less

stringent limit of either Minn R. 7011.0730 or Minn. R. 7011.0735.

Minn. R. 7011.0715, subp. 1(A)

Opacity: less than or equal to 20 percent opacity Minn. R. 7011.0715, subp. 1(B)
TABLE A: LIMITS AND OTHER REQUIREMENTS

US Steel Corp - Minntac

13700005 - 006

Facility Name:

Permit Number:

A-49 06/05/13

Subject Item: GP 028 Limestone handling (Actions 007 and 008)

Associated Items: CE 070 Wet Scrubber-High Efficiency w/o Lime

CE 143 Fabric Filter - Low Temperature, i.e., T<180 Degrees F

EU 139 Tertiary Crusher L29

EU 393 Limestone Dump Pocket

EU 394 Limestone converyor trnsfr 1

EU 395 Limestone converyor trnsfr 2

SV 084 Tertiary Crusher L29

SV 194 Limestone Receiving System

What to do Why to do it

A. POLLUTANT LIMITS hdr

Total Particulate Matter: less than or equal to 0.022 grains/dry standard cubic foot

(0.05 grams per dry standard cubic meter).

40 CFR 60.672(a)(1)

Opacity: less than or equal to 7 percent opacity for SV 194, which is controlled by

CE 143 (the fabric filter for limestone receiving system dump pocket & transfer

point no. 1).

40 CFR 60.672(a)(2)

B. CONTROL EQUIPMENT REQUIREMENTS hdr

Pressure Drop: greater than or equal to 3.2 inches of water column and less than or

equal to 5.7 inches of water column for CE 070 (wet scrubber) that controls SV 084

for EU 395 (limestone receiving system transfer point no. 2).

Title I Condition: a 1997&2000 action that avoided

review under CFR 52.21 set this

Pressure Drop: greater than or equal to 0.5 inches of water column and less than or

equal to 8.0 inches of water column for CE 143 (fabric filter) that controls SV 194

for EU 393 & EU 394 (limestone receiving system dump pocket & transfer point no.

1).

Title I Condition: a 1997&2000 action that avoided

review under CFR 52.21 set this

Liquid Flow Rate: greater than or equal to 25 gallons/minute and less than or equal

to 45 gallons/minute for CE 070 (wet scrubber) that controls SV 084 for EU 395

(limestone receiving system transfer point no. 2).

Title I Condition: a 1997&2000 action that avoided

review under CFR 52.21 set this

C. CONTROL EQUIPMENT MONITORING hdr

Gas Stream Pressure Drop: Monitor and record as least once every day when in

operation for CE 070 and CE 143.

Title I Condition: a 1997&2000 action that avoided

review under CFR 52.21 set this

Liquid Flow Rate: Monitor and record as least once every day when in operation

for CE 070.

Title I Condition: a 1997&2000 action that avoided

review under CFR 52.21 set this

Process Monitoring: the visual emissions observer in the facility staff shall check

stack visible emissions (opacity) for SV 194 once daily using a checklist that at a

minimum contains the information required in Appendix B. If the Permittee uses for

CE 143 a broken bag detector approved by the MPCA, the Permittee does not

need to conduct visible emissions checks for SV 194.

Minn. R. 7007.0800, subp. 4(D); 14; 16(J)

D. PERFORMANCE TESTING REQUIREMENTS hdr

Initial Performance Test: due 365 days after 11/30/2004 on one stack to measure

PM and Opacity emissions.

Minn. R. 7017.2020, subp. 1

Performance Test Pre-test Meeting: due 7 days before Performance Test Minn. R. 7017.2030, subp. 4
TABLE A: LIMITS AND OTHER REQUIREMENTS

US Steel Corp - Minntac

13700005 - 006

Facility Name:

Permit Number:

A-50 06/05/13

Subject Item: SV 104 L3 Cooler Vent Stack

Associated Items: EU 227 L3 Cooler Vent Stack

What to do Why to do it

A. POLLUTANT LIMITS hdr

Total Particulate Matter: less than or equal to 0.3 grains/dry standard cubic foot of

exhaust gas unless required to further reduce emissions to comply with the less

stringent limit of either Minn R. 7011.0730 or Minn. R. 7011.0735.

Minn. R. 7011.0710, subp. 1(A)

Opacity: less than or equal to 20 percent opacity except for one six-minute period

per hour of not more than 60 percent opacity.

Minn. R. 7011.0710, subp. 1(B)

B. OPERATION REQUIREMENTS hdr

Process Monitoring: the visual emissions observer in the facility staff shall check

stack visible emissions (opacity) once daily using a checklist that at a minimum

contains the information required in Appendix B.

Minn. R. 7007.0800, subp. 4(D); 14; 16(J)

C. PERFORMANCE TESTING REQUIREMENTS hdr

Initial Performance Test: due 365 days after 11/30/2004 to measure PM and

Opacity emissions.

Minn. R. 7017.2020, subp. 1

Performance Test: due before end of each year following Initial Performance Test

to measure PM and Opacity, if Line 3 utilization for that 12-month period is 50% or

higher. (Line 3 utilization is 100%, if its kiln burner is fired for 8760 hours in the

12-month period, regardless of the rate of heat input or the rate of green ball feed.)

However, Performance Test must be conducted at least ONCE for each 60 month

period following Initial Performance Test.

Minn. R. 7017.2020, subp. 1

Performance Test Pre-test Meeting: due 7 days before Performance Test Minn. R. 7017.2030, subp. 4
TABLE A: LIMITS AND OTHER REQUIREMENTS

US Steel Corp - Minntac

13700005 - 006

Facility Name:

Permit Number:

A-51 06/05/13

Subject Item: SV 122 L4 Conveyor Transfer 041-046 to 042 Belts

Associated Items: EU 264 L4 Conveyor Transfer Feeder 

EU 266 L4 Conveyor Transfer 041/046 to 042 Belts

EU 267 L4 Conveyor Transfer 041/046 to 042 Belts

EU 399 L4 Pellet Scrn Fine Belt

What to do Why to do it

A. POLLUTANT LIMITS hdr

Total Particulate Matter: less than or equal to 0.05 grams/dry standard cubic meter

(0.022 grains/dry standard cubic foot) of exhaust gas on and after the date on

which the performance test required is completed.

40 CFR 60.382(a); Minn. R. 7011.2700

Opacity: less than or equal to 10 percent opacity using 6-minute average for any

process fugitive emissions on and after the 60th day after achieving the maximum

production rate at which EU 399 and the screen at EU 264 will be operated, but not

later than 180 days after the initial startup of EU 399 and the screen at EU 264.

40 CFR 60.382(b); Minn. R. 7011.2700

B. POLLUTION CONTROL EQUIPMENT LIMITS hdr

Liquid Flow Rate: greater than or equal to 240 gallons/minute using 24-hour Rolling

Average .

Minn. R. 7017.2025, subp. 3

C. POLLUTION CONTROL EQUIPMENT REQUIREMENTS hdr

Gas Stream Pressure Drop: The Permittee shall install, calibrate, maintain, and

operate a monitoring device for the wet scrubber (CE 106) for the continuous

measurement of the change in pressure of the gas stream through the wet

scrubber. The monitoring device must be certified by the manufacturer to be

accurate within 250 Pascals (1 inch water) gauge pressure, plus or minus; and

must be calibrated on an annual basis in accordance with manufacturer's

instructions.

40 CFR 60.384(a); Minn. R. 7011.2700

Record Gas Stream Pressure Drop and Liquid Flow Rate for CE 106 each day in

operation.

Minn. R. 7011.0800

Liquid Flow Rate: The Permittee shall install, calibrate, maintain, and operate a

monitoring device for the wet scrubber (CE106) for the continuous measurement of

the scrubbing liquid flow rate to the wet scrubber. The monitoring device must be

certified by the manufacturer to be accurate within 5%, plus or minus, of design

scrubbing liquid flow rate; and must be calibrated on an annual basis in accordance

with manufacturer's instructions.

40 CFR 60.384(b); Minn. R. 7011.2700

D. PERFORMANCE TESTING REQUIREMENTS hdr

Initial Performance Test: due 60 days after achieving maximum capacity but not

later than 180 days after initial startup of the affected facility (EU 399 and the

screen at EU 264) to determine Total Particulate Matter emissions.

40 CFR 60.385(a); Minn. R. 7011.2700

Performance Test Pre-test Meeting: due 7 days before Performance Test. Minn. R. 7017.2030, subp. 4

The Permittee shall record the measurements of both the change in pressure of the

gas stream across the wet scrubber (CE 106) and the scrubbing liquid flow rate

during the Initial Performance Test of the wet scrubber and at least weekly

thereafter.

40 CFR 60.385(b); Minn. R. 7011.2700
TABLE A: LIMITS AND OTHER REQUIREMENTS

US Steel Corp - Minntac

13700005 - 006

Facility Name:

Permit Number:

A-52 06/05/13

Subject Item: SV 131 L5 Conveyor Transfer 041-046 to 042 Belts

Associated Items: EU 285 L5 Conveyor Transfer Feeder (B4 L5 hygiene)

EU 287 L5 Conveyor Transfer 041/046 to 042 Belts

EU 288 L5 Conveyor Transfer 041/046 to 042 Belts

EU 400 L5 Pellet Scrn Fine Belt

What to do Why to do it

A. POLLUTANT LIMITS hdr

Total Particulate Matter: less than or equal to 0.05 grams/dry standard cubic meter

(0.022 grains/dry standard cubic foot) of exhaust gas on and after the date on

which the performance test required is completed.

40 CFR 60.382(a); Minn. R. 7011.2700

Opacity: less than or equal to 10 percent opacity using 6-minute average for any

process fugitive emissions on and after the 60th day after achieving the maximum

production rate at which the screen at EU 285 will be operated, but not later than

180 days after the initial startup of the screen at EU 285.

40 CFR 60.382(b); Minn. R. 7011.2700

B. POLLUTION CONTROL EQUIPMENT REQUIREMENTS hdr

Gas Stream Pressure Drop: The Permittee shall install, calibrate, maintain, and

operate a monitoring device for the wet scrubber (CE 116) for the continuous

measurement of the change in pressure of the gas stream through the wet

scrubber. The monitoring device must be certified by the manufacturer to be

accurate within 250 Pascals (1 inch water) gauge pressure, plus or minus; and

must be calibrated on an annual basis in accordance with manufacturer's

instructions.

40 CFR 60.384(a); Minn. R. 7011.2700

Liquid Flow Rate: The Permittee shall install, calibrate, maintain, and operate a

monitoring device for the wet scrubber (CE116) for the continuous measurement of

the scrubbing liquid flow rate to the wet scrubber. The monitoring device must be

certified by the manufacturer to be accurate within 5%, plus or minus, of design

scrubbing liquid flow rate; and must be calibrated on an annual basis in accordance

with manufacturer's instructions.

40 CFR 60.384(b); Minn. R. 7011.2700

Record Gas Stream Pressure Drop and Liquid Flow Rate for CE 116 each day in

operation.

Minn. R. 7011.0800

C. PERFORMANCE TESTING REQUIREMENTS hdr

Initial Performance Test: due 60 days after achieving maximum capacity, but not

later than 180 days after initial startup of the affected facility (the screen at EU 285)

to determine Total Particulate Matter emission. {Please Note: Air Emission Permit

No. 13700005-013 has 2 Initial Performance Test requirements for SV 131 - one

before the Industrial Hygiene Upgrade Project and the other after the Industrial

Hygiene Upgrade Project.}

40 CFR 60.385(a); Minn. R. 7011.2700

Performance Test Pre-test Meeting: due 7 days before Performance Test. Minn. R. 7017.2030, subp. 4

The Permittee shall record the measurements of both the change in pressure of the

gas stream across the wet scrubber (CE 116) and the scrubbing liquid flow rate

during the Initial Performance Test of the wet scrubber and at least weekly

thereafter.

40 CFR 60.385(b); Minn. R. 7011.2700
TABLE A: LIMITS AND OTHER REQUIREMENTS

US Steel Corp - Minntac

13700005 - 006

Facility Name:

Permit Number:

A-53 06/05/13

Subject Item: SV 191 Carpenters Shop

Associated Items: EU 391 Carpenters Shop

What to do Why to do it

A. POLLUTANT LIMITS hdr

Total Particulate Matter: less than or equal to 0.3 grains/dry standard cubic foot of

exhaust gas unless required to further reduce emissions to comply with the less

stringent limit of either Minn. R. 7011.0730 or Minn. R. 7011.0735.

Minn. R. 7011.0715, subp. 1(A)

Opacity: less than or equal to 20 percent opacity Minn. R. 7011.0715, subp. 1(B)
TABLE A: LIMITS AND OTHER REQUIREMENTS

US Steel Corp - Minntac

13700005 - 006

Facility Name:

Permit Number:

A-54 06/05/13

Subject Item: SV 192 Paint Shop Booth

Associated Items: EU 392 Paint Shop Booth

What to do Why to do it

A. POLLUTANT LIMITS hdr

Total Particulate Matter: less than or equal to 0.3 grains/dry standard cubic foot of

exhaust gas unless required to further reduce emissions to comply with the less

stringent limit of either Minn. R. 7011.0730 or Minn. R. 7011.0735.

Minn. R. 7011.0715, subp. 1(A)

Opacity: less than or equal to 20 percent opacity Minn. R. 7011.0715, subp. 1(B)
TABLE A: LIMITS AND OTHER REQUIREMENTS

US Steel Corp - Minntac

13700005 - 006

Facility Name:

Permit Number:

A-55 06/05/13

Subject Item: SV 195 Hill Wood Products system

Associated Items: EU 396 Hill Wood Products system

What to do Why to do it

Process Throughput: less than or equal to 220,000 tons/year using 12-month

Rolling Sum of wood waste. The amount of wood waste received shall be

calculated by the 15th of each month for the previous 12-month period. A record of

the amount of wood waste received shall be kept on a daily basis.

Title I Condition: Limit to avoid classification as a

major modification under 40 CFR 52.21; and Minn. R.

7007.3000

Total Particulate Matter: greater than or equal to 90 percent capture efficiency and

less than 0.54 lb/hr at SV 195 after control by CE 144 (fabric filter)

Title I Condition: Limit to avoid classification as a

major modification under 40 CFR 52.21; and Minn. R.

7007.3000

Particulate Matter < 10 micron: greater than or equal to 90 percent capture

efficiency and less than 0.32 lb/hr at SV 195 after control by CE 144 (fabric filter)

Title I Condition: Limit to avoid classification as a

major modification under 40 CFR 52.21; and Minn. R.

7007.3000

Opacity: less than or equal to 20 percent opacity Minn. R. 7011.0715, subp. 1(B)

Monitoring: The visible emissions observer on the facility staff shall check stack

visible emissions (opacity) once daily using a checklist that at a minimum contains

the information required in Appendix B.

Minn. R. 7007.0800, subp. 4(D), 14, and 16(J)
TABLE A: LIMITS AND OTHER REQUIREMENTS

US Steel Corp - Minntac

13700005 - 006

Facility Name:

Permit Number:

A-56 06/05/13

Subject Item: MR 001 NOx & SO2 CEMS at Line 3 Waste Gas Stack (SV 103)

Associated Items: CE 146 Wet Scrubber-High Efficiency

GP 009 Agglomerator Line 3

SV 103 L3 Waste Gas Stack

What to do Why to do it

CONTINUOUS EMISSION MONITORING SYSTEMS (CEMS) Requirements

(See additional CEMS requirements in Table A under Subject Item: Total Facility,

Section F, and Subject Items MR 002 through MR 005; and in Table B)

hdr

Initial Startup of the Monitor: due 30 days after 12/22/2008 . Monitor is the

continuous emission monitoring system (CEMS), which is defined as the total

equipment used to sample, condition (if applicable), analyze, and provide a

permanent record of emissions of NOx and SO2 in lb/hr.

Title I Conditions: to monitor NOx mitigation for Class I

visibility impacts from pellet induration; 40 CFR 52.21

(p); Minn. R. 7007.3000; Minn. R. 7017.1006.

CEM Certification Test: due 90 days after Excess Emissions/Downtime Reports

(EER's) are first required. The first EER is due 30 days after the end of the

calendar quarter following Permit Issuance. Follow the Performance Specifications

listed in 40 CFR 60, Appendix B. Note that some changes that affect the CEMS

may require recertification.

Title I Conditions: to monitor NOx mitigation for Class I

visibility impacts from pellet induration; 40 CFR 52.21

(p); Minn. R. 7007.3000; Minn. R. 7017.1050, subp. 1.

CEMS Cylinder Gas Audit (CGA): due before end of each calendar quarter

following CEM Certification Test, except that a CGA is not required during any

calendar half year in which a RATA was performed. The initial CGA must be

performed within 80 days following certification of the CEMS. The CGAs shall be

conducted at least three months apart but no more than eight months apart. A

CGA shall be conducted according to the procedures in 40 CFR 60, Appendix F,

section 5.1.2. If the monitored emission unit was operated for less than 24 hours

during the calendar half year, a CGA is not required for that calendar half year.

Title I Conditions: to monitor NOx mitigation for Class I

visibility impacts from pellet induration; 40 CFR 52.21

(p); Minn. R. 7007.3000; Minn. R. 7017.1170, subp. 4.

CEMS Relative Accuracy Test Audit (RATA): due before end of each calendar year

following CEM Certification Test. A RATA is not required in any calendar year if a

RATA conducted in the previous year demonstrated a relative accuracy value of

less than 15 percent or if the associated emission unit operated less than 48 hours

during the calendar year. If the exception is used, the next RATA shall be

conducted during the first half of the following calendar year. RATAs shall be

conducted at least 3 months apart according to 40 CFR 60, Appendix F, section

5.1.1.

Title I Conditions: to monitor NOx mitigation for Class I

visibility impacts from pellet induration; 40 CFR 52.21

(p); Minn. R. 7007.3000; Minn. R. 7017.1170, subp. 5.

Excess Emissions/Downtime Reports (EER's): due 30 days after end of each

calendar quarter following Initial Startup of the Monitor. Submit Deviations

Reporting Form DRF-1 as amended. The EER shall indicate all periods of monitor

bypass and all periods of exceedances of the limit including exceedances allowed

by an applicable standard, i.e., during starup, shutdown, and malfunctions. The

EER must be submitted even if there were no excess emissions, downtime or

bypass during the quarter. { This is a reminder; the same requirement can be

found in Table B of this permit. }

Title I Conditions: to monitor NOx mitigation for Class I

visibility impacts from pellet induration; 40 CFR 52.21

(p); Minn. R. 7007.3000; Minn. R. 7017.1110, subp. 1

and 2.
TABLE A: LIMITS AND OTHER REQUIREMENTS

US Steel Corp - Minntac

13700005 - 006

Facility Name:

Permit Number:

A-57 06/05/13

Subject Item: MR 002 NOx & SO2 CEMS at Line 4 Waste Gas Stack (SV 118)

Associated Items: CE 103 Wet Scrubber-High Efficiency w/o Lime

GP 010 Agglomeration Lines 4 & 5

SV 118 L4 Waste Gas Stack

What to do Why to do it

CONTINUOUS EMISSION MONITORING SYSTEMS (CEMS) Requirements

(See additional CEMS requirements in Table A under Subject Item: Total Facility,

Section F, and Subject Items MR 001, and MR 003 through MR 005; and in Table

B)

hdr

Initial Startup of the Monitor: due 30 days after 12/22/2008 . Monitor is the

continuous emission monitoring system (CEMS), which is defined as the total

equipment used to sample, condition (if applicable), analyze, and provide a

permanent record of emissions of NOx and SO2 in lb/hr.

Title I Conditions: to monitor NOx mitigation for Class I

visibility impacts from pellet induration; 40 CFR 52.21

(p); Minn. R. 7007.3000; Minn. R. 7017.1006.

CEM Certification Test: due 90 days after Excess Emissions/Downtime Reports

(EER's) are first required. The first EER is due 30 days after the end of the

calendar quarter following Permit Issuance. Follow the Performance Specifications

listed in 40 CFR 60, Appendix B. Note that some changes that affect the CEMS

may require recertification.

Title I Conditions: to monitor NOx mitigation for Class I

visibility impacts from pellet induration; 40 CFR 52.21

(p); Minn. R. 7007.3000; Minn. R. 7017.1050, subp. 1.

CEMS Cylinder Gas Audit (CGA): due before end of each calendar quarter

following CEM Certification Test, except that a CGA is not required during any

calendar half year in which a RATA was performed. The initial CGA must be

performed within 80 days following certification of the CEMS. The CGAs shall be

conducted at least three months apart but no more than eight months apart. A

CGA shall be conducted according to the procedures in 40 CFR 60, Appendix F,

section 5.1.2. If the monitored emission unit was operated for less than 24 hours

during the calendar half year, a CGA is not required for that calendar half year.

Title I Conditions: to monitor NOx mitigation for Class I

visibility impacts from pellet induration; 40 CFR 52.21

(p); Minn. R. 7007.3000; Minn. R. 7017.1170, subp. 4.

CEMS Relative Accuracy Test Audit (RATA): due before end of each calendar year

following CEM Certification Test. A RATA is not required in any calendar year if a

RATA conducted in the previous year demonstrated a relative accuracy value of

less than 15 percent or if the associated emission unit operated less than 48 hours

during the calendar year. If the exception is used, the next RATA shall be

conducted during the first half of the following calendar year. RATAs shall be

conducted at least 3 months apart according to 40 CFR 60, Appendix F, section

5.1.1.

Title I Conditions: to monitor NOx mitigation for Class I

visibility impacts from pellet induration; 40 CFR 52.21

(p); Minn. R. 7007.3000; Minn. R. 7017.1170, subp. 5.

Excess Emissions/Downtime Reports (EER's): due 30 days after end of each

calendar quarter following Initial Startup of the Monitor. Submit Deviations

Reporting Form DRF-1 as amended. The EER shall indicate all periods of monitor

bypass and all periods of exceedances of the limit including exceedances allowed

by an applicable standard, i.e., during starup, shutdown, and malfunctions. The

EER must be submitted even if there were no excess emissions, downtime or

bypass during the quarter. { This is a reminder; the same requirement can be

found in Table B of this permit. }

Title I Conditions: to monitor NOx mitigation for Class I

visibility impacts from pellet induration; 40 CFR 52.21

(p); Minn. R. 7007.3000; Minn. R. 7017.1110, subp. 1

and 2.
TABLE A: LIMITS AND OTHER REQUIREMENTS

US Steel Corp - Minntac

13700005 - 006

Facility Name:

Permit Number:

A-58 06/05/13

Subject Item: MR 003 NOx & SO2 CEMS at Line 5 Waste Gas Stack (SV 127)

Associated Items: CE 113 Wet Scrubber-High Efficiency w/o Lime

GP 010 Agglomeration Lines 4 & 5

SV 127 L5 Waste Gas Stack

What to do Why to do it

CONTINUOUS EMISSION MONITORING SYSTEMS (CEMS) Requirements

(See additional CEMS requirements in Table A under Subject Item: Total Facility,

Section F, and Subject Items MR 001, MR 002, MR 004, and MR 005; and in Table

B)

hdr

Initial Startup of the Monitor: due 30 days after 12/22/2008 . Monitor is the

continuous emission monitoring system (CEMS), which is defined as the total

equipment used to sample, condition (if applicable), analyze, and provide a

permanent record of emissions of NOx and SO2 in lb/hr.

Title I Conditions: to monitor NOx mitigation for Class I

visibility impacts from pellet induration; 40 CFR 52.21

(p); Minn. R. 7007.3000; Minn. R. 7017.1006.

CEM Certification Test: due 90 days after Excess Emissions/Downtime Reports

(EER's) are first required. The first EER is due 30 days after the end of the

calendar quarter following Permit Issuance. Follow the Performance Specifications

listed in 40 CFR 60, Appendix B. Note that some changes that affect the CEMS

may require recertification.

Title I Conditions: to monitor NOx mitigation for Class I

visibility impacts from pellet induration; 40 CFR 52.21

(p); Minn. R. 7007.3000; Minn. R. 7017.1050, subp. 1.

CEMS Cylinder Gas Audit (CGA): due before end of each calendar quarter

following CEM Certification Test, except that a CGA is not required during any

calendar half year in which a RATA was performed. The initial CGA must be

performed within 80 days following certification of the CEMS. The CGAs shall be

conducted at least three months apart but no more than eight months apart. A

CGA shall be conducted according to the procedures in 40 CFR 60, Appendix F,

section 5.1.2. If the monitored emission unit was operated for less than 24 hours

during the calendar half year, a CGA is not required for that calendar half year.

Title I Conditions: to monitor NOx mitigation for Class I

visibility impacts from pellet induration; 40 CFR 52.21

(p); Minn. R. 7007.3000; Minn. R. 7017.1170, subp. 4.

CEMS Relative Accuracy Test Audit (RATA): due before end of each calendar year

following CEM Certification Test. A RATA is not required in any calendar year if a

RATA conducted in the previous year demonstrated a relative accuracy value of

less than 15 percent or if the associated emission unit operated less than 48 hours

during the calendar year. If the exception is used, the next RATA shall be

conducted during the first half of the following calendar year. RATAs shall be

conducted at least 3 months apart according to 40 CFR 60, Appendix F, section

5.1.1.

Title I Conditions: to monitor NOx mitigation for Class I

visibility impacts from pellet induration; 40 CFR 52.21

(p); Minn. R. 7007.3000; Minn. R. 7017.1170, subp. 5.

Excess Emissions/Downtime Reports (EER's): due 30 days after end of each

calendar quarter following Initial Startup of the Monitor. Submit Deviations

Reporting Form DRF-1 as amended. The EER shall indicate all periods of monitor

bypass and all periods of exceedances of the limit including exceedances allowed

by an applicable standard, i.e., during starup, shutdown, and malfunctions. The

EER must be submitted even if there were no excess emissions, downtime or

bypass during the quarter. { This is a reminder; the same requirement can be

found in Table B of this permit. }

Title I Conditions: to monitor NOx mitigation for Class I

visibility impacts from pellet induration; 40 CFR 52.21

(p); Minn. R. 7007.3000; Minn. R. 7017.1110, subp. 1

and 2.
TABLE A: LIMITS AND OTHER REQUIREMENTS

US Steel Corp - Minntac

13700005 - 006

Facility Name:

Permit Number:

A-59 06/05/13

Subject Item: MR 004 NOx & SO2 CEMS at Line 6 Waste Gas Stack (SV 144)

Associated Items: CE 126 Wet Scrubber-High Efficiency w/o Lime

GP 011 Agglomeration Lines 6 & 7 (Action 007)

SV 144 L6 Waste Gas Stack

What to do Why to do it

CONTINUOUS EMISSION MONITORING SYSTEMS (CEMS) Requirements

(See additional CEMS requirements in Table A under Subject Item: Total Facility,

Section F, and Subject Items MR 001 through MR 003, and MR 005; and in Table

B)

hdr

Initial Startup of the Monitor: due 30 days after 12/22/2008 . Monitor is the

continuous emission monitoring system (CEMS), which is defined as the total

equipment used to sample, condition (if applicable), analyze, and provide a

permanent record of emissions of NOx and SO2 in lb/hr.

Title I Conditions: to monitor NOx mitigation for Class I

visibility impacts from pellet induration; 40 CFR 52.21

(p); Minn. R. 7007.3000; Minn. R. 7017.1006.

CEM Certification Test: due 90 days after Excess Emissions/Downtime Reports

(EER's) are first required. The first EER is due 30 days after the end of the

calendar quarter following Permit Issuance. Follow the Performance Specifications

listed in 40 CFR 60, Appendix B. Note that some changes that affect the CEMS

may require recertification.

Title I Conditions: to monitor NOx mitigation for Class I

visibility impacts from pellet induration; 40 CFR 52.21

(p); Minn. R. 7007.3000; Minn. R. 7017.1050, subp. 1.

CEMS Cylinder Gas Audit (CGA): due before end of each calendar quarter

following CEM Certification Test, except that a CGA is not required during any

calendar half year in which a RATA was performed. The initial CGA must be

performed within 80 days following certification of the CEMS. The CGAs shall be

conducted at least three months apart but no more than eight months apart. A

CGA shall be conducted according to the procedures in 40 CFR 60, Appendix F,

section 5.1.2. If the monitored emission unit was operated for less than 24 hours

during the calendar half year, a CGA is not required for that calendar half year.

Title I Conditions: to monitor NOx mitigation for Class I

visibility impacts from pellet induration; 40 CFR 52.21

(p); Minn. R. 7007.3000; Minn. R. 7017.1170, subp. 4.

CEMS Relative Accuracy Test Audit (RATA): due before end of each calendar year

following CEM Certification Test. A RATA is not required in any calendar year if a

RATA conducted in the previous year demonstrated a relative accuracy value of

less than 15 percent or if the associated emission unit operated less than 48 hours

during the calendar year. If the exception is used, the next RATA shall be

conducted during the first half of the following calendar year. RATAs shall be

conducted at least 3 months apart according to 40 CFR 60, Appendix F, section

5.1.1.

Title I Conditions: to monitor NOx mitigation for Class I

visibility impacts from pellet induration; 40 CFR 52.21

(p); Minn. R. 7007.3000; Minn. R. 7017.1170, subp. 5.

Excess Emissions/Downtime Reports (EER's): due 30 days after end of each

calendar quarter following Initial Startup of the Monitor. Submit Deviations

Reporting Form DRF-1 as amended. The EER shall indicate all periods of monitor

bypass and all periods of exceedances of the limit including exceedances allowed

by an applicable standard, i.e., during starup, shutdown, and malfunctions. The

EER must be submitted even if there were no excess emissions, downtime or

bypass during the quarter. { This is a reminder; the same requirement can be

found in Table B of this permit. }

Title I Conditions: to monitor NOx mitigation for Class I

visibility impacts from pellet induration; 40 CFR 52.21

(p); Minn. R. 7007.3000; Minn. R. 7017.1110, subp. 1

and 2.
TABLE A: LIMITS AND OTHER REQUIREMENTS

US Steel Corp - Minntac

13700005 - 006

Facility Name:

Permit Number:

A-60 06/05/13

Subject Item: MR 005 NOx & SO2 CEMS at Line 7 Waste Gas Stack (SV 151)

Associated Items: CE 136 Wet Scrubber-High Efficiency w/o Lime

GP 011 Agglomeration Lines 6 & 7 (Action 007)

SV 151 L7 Waste Gas Stack

What to do Why to do it

CONTINUOUS EMISSION MONITORING SYSTEMS (CEMS) Requirements

(See additional CEMS requirements in Table A under Subject Item: Total Facility,

Section F, and Subject Items MR 001 through MR 004; and in Table B)

hdr

Initial Startup of the Monitor: due 30 days after 12/22/2008 . Monitor is the

continuous emission monitoring system (CEMS), which is defined as the total

equipment used to sample, condition (if applicable), analyze, and provide a

permanent record of emissions of NOx and SO2 in lb/hr.

Title I Conditions: to monitor NOx mitigation for Class I

visibility impacts from pellet induration; 40 CFR 52.21

(p); Minn. R. 7007.3000; Minn. R. 7017.1006.

CEM Certification Test: due 90 days after Excess Emissions/Downtime Reports

(EER's) are first required. The first EER is due 30 days after the end of the

calendar quarter following Permit Issuance. Follow the Performance Specifications

listed in 40 CFR 60, Appendix B. Note that some changes that affect the CEMS

may require recertification.

Title I Conditions: to monitor NOx mitigation for Class I

visibility impacts from pellet induration; 40 CFR 52.21

(p); Minn. R. 7007.3000; Minn. R. 7017.1050, subp. 1.

CEMS Cylinder Gas Audit (CGA): due before end of each calendar quarter

following CEM Certification Test, except that a CGA is not required during any

calendar half year in which a RATA was performed. The initial CGA must be

performed within 80 days following certification of the CEMS. The CGAs shall be

conducted at least three months apart but no more than eight months apart. A

CGA shall be conducted according to the procedures in 40 CFR 60, Appendix F,

section 5.1.2. If the monitored emission unit was operated for less than 24 hours

during the calendar half year, a CGA is not required for that calendar half year.

Title I Conditions: to monitor NOx mitigation for Class I

visibility impacts from pellet induration; 40 CFR 52.21

(p); Minn. R. 7007.3000; Minn. R. 7017.1170, subp. 4.

CEMS Relative Accuracy Test Audit (RATA): due before end of each calendar year

following CEM Certification Test. A RATA is not required in any calendar year if a

RATA conducted in the previous year demonstrated a relative accuracy value of

less than 15 percent or if the associated emission unit operated less than 48 hours

during the calendar year. If the exception is used, the next RATA shall be

conducted during the first half of the following calendar year. RATAs shall be

conducted at least 3 months apart according to 40 CFR 60, Appendix F, section

5.1.1.

Title I Conditions: to monitor NOx mitigation for Class I

visibility impacts from pellet induration; 40 CFR 52.21

(p); Minn. R. 7007.3000; Minn. R. 7017.1170, subp. 5.

Excess Emissions/Downtime Reports (EER's): due 30 days after end of each

calendar quarter following Initial Startup of the Monitor. Submit Deviations

Reporting Form DRF-1 as amended. The EER shall indicate all periods of monitor

bypass and all periods of exceedances of the limit including exceedances allowed

by an applicable standard, i.e., during starup, shutdown, and malfunctions. The

EER must be submitted even if there were no excess emissions, downtime or

bypass during the quarter. { This is a reminder; the same requirement can be

found in Table B of this permit. }

Title I Conditions: to monitor NOx mitigation for Class I

visibility impacts from pellet induration; 40 CFR 52.21

(p); Minn. R. 7007.3000; Minn. R. 7017.1110, subp. 1

and 2.
TABLE B: SUBMITTALS

Facility Name: US Steel Corp - Minntac

Permit Number: 13700005 - 006

B-1 06/05/13

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

- accumulated insignificant activities,

- installation of control equipment,

- replacement of an emissions unit, and

- changes that contravene a permit term.

Send submittals that are required to be submitted to the U.S. 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 parts

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

 Minnesota Pollution Control Agency

 520 Lafayette Road North

 St. Paul, Minnesota 55155-4194

Table B lists most of the submittals required by this permit. Please note that some submittal requirements may appear in Table A

or, if applicable, within a compliance schedule located in Table C. Table B is divided into two sections in order to separately list

one-time only and recurrent submittal requirements.

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
TABLE B: ONE TIME SUBMITTALS OR NOTIFICATIONS

Facility Name: US Steel Corp - Minntac

Permit Number: 13700005 - 006

B-2 06/05/13

What to send When to send Portion of Facility Affected

Application for Permit Reissuance due 180 days before expiration of Existing

Permit

Total Facility

Fugitive Emissions Control Plan due 60 days after 02/26/2003 for approval by

the commissioner. The plan shall identify all

fugitive emission sources, primary and

contingent control measures, and record

keeping. The Permittee shall follow the

actions and record keeping specified in the

control plan. The commissioner may require

additions or changes to the O&M plan when

granting approval. The Permittee will be

given an opportunity to comment on any

required additions or changes to the plan

before the commissioner grants approval of

the plan. The plan may be amended by the

Permittee with the Commissioner's approval.

If the Commissioner determines the permittee

is out of compliance with Minn. R. 7011.0150

or the fugitive emission control plan, then the

permittee may be required to amend the

control plan and/or to install and operate

particulate matter ambient monitors.

The plan shall incorporate tailings basin

emissions control measures required by the

September 17, 1999, Stipulation Agreement,

with changes approved by the Commissioner.

Total Facility

Notification of the Actual Date of Initial Startup due 15 days after Initial Startup of EU 399

and the screen at EU 264.

SV122

Notification of the Actual Date of Initial Startup due 15 days after Initial Startup of the screen

at EU 285.

SV131

Notification of the Date Construction Began due 30 days after Start Of Construction.

Submit the name and number of each unit

and the date construction of each unit began

(EU 399 and the screen at EU 264).

SV122

Notification of the Date Construction Began due 30 days after Start Of Construction.

Submit the name and number of each unit

and the date construction of each unit began

(the screen at EU 285).

SV131

Operation and Maintenance Plan due 120 days after 02/26/2003 for review and

approval by the commissioner. The O&M

plan shall identify all air pollution control

equipment, a preventative maintenance

program for that equipment, description of

corrective actions to be taken in the event of a

malfunction or breakdown, description of the

employee training program, and the records

kept to demonstrate plan implementation.

The commissioner may require additions or

changes to the O&M plan when granting

approval. The Permittee will be given an

opportunity to comment on any required

additions or changes to the plan before the

commissioner grants approval of the plan.

Total Facility

Performance Test Notification (written) due 30 days before Performance Test GP003, GP005, GP007, GP009, GP010,

GP011, GP012, GP013, GP014, GP015,

GP016, GP017, GP018, GP019, GP020,

GP021, GP022, GP023, GP024, GP025,

GP026, GP028, SV104, SV122, SV131

Performance Test Plan due 30 days before Performance Test GP003, GP005, GP007, GP009, GP010,

GP011, GP012, GP013, GP014, GP015,

GP016, GP017, GP018, GP019, GP020,

GP021, GP022, GP023, GP024, GP025,

GP026, GP028, SV104, SV122, SV131
TABLE B: ONE TIME SUBMITTALS OR NOTIFICATIONS

Facility Name: US Steel Corp - Minntac

Permit Number: 13700005 - 006

B-3 06/05/13

Performance Test Report - Microfiche Copy due 105 days after Performance Test GP003, GP005, GP007, GP009, GP010,

GP011, GP012, GP013, GP014, GP015,

GP016, GP017, GP018, GP019, GP020,

GP021, GP022, GP023, GP024, GP025,

GP026, GP028, SV104, SV122, SV131

Performance Test Report due 45 days after Performance Test GP003, GP005, GP007, GP009, GP010,

GP011, GP012, GP013, GP014, GP015,

GP016, GP017, GP018, GP019, GP020,

GP021, GP022, GP023, GP024, GP025,

GP026, GP028, SV104, SV122, SV131

Relative Accuracy Test Audit (RATA) Results

Summary

 due 45 days after CEMS Relative Accuracy

Test Audit (RATA).

MR001, MR002, MR003, MR004, MR005

Submittal of Permit Application due 360 days after Effective Date of Permit

the Permittee shall submit parameter ranges,

along with rationale for their development, in a

permit amendment application, to incorporate

the air pollution control equipment parameter

ranges (scrubber water flow and/or pressure

drop) into this permit. The rationale for

choosing these ranges shall include the

control equipment manufacturer's suggested

ranges and any reasons for deviating from the

recommended ranges.

Total Facility

Submittal of Permit Application due 60 days after receipt of written MPCA

approval of NOx emission control pilot testing

results, for a major permit amendment to

install a control technology at one

Agglomerator line for a full scale

demonstration.

The Permittee shall submit a schedule of

equipment installation, anticipated startup,

and final reporting of the demonstration within

60 days of receipt of the Permit from the

MPCA.

Total Facility

Submittal of Permit Application due 60 days after receipt of written MPCA

approval of the final report on control

technology demonstration on Line 4 (EU 261)

and Line 5 (EU 282) for a major permit

amendment to install the demonstrated

control technology on the remaining

Agglomerator lines.

The Permittee shall submit a schedule of

equipment installation and anticipated startup

of individual lines within 60 days of receipt of

the Permit from the MPCA.

Total Facility

Submittal due 1096 days after 02/26/2003 to provide

modeling data as specified in MPCA

Guidance for Modeling Information Request.

The modeling information is for data collection

purposes, no modeling analysis is required at

this time. This is a state only requirement and

is not enforceable by the EPA Administrator or

citizens under the Clean Air Act.

Total Facility

Testing Frequency Plan due 60 days after Initial Performance Test.

For each of Lines 4 and 5, the plan shall

specify a testing frequency for fluorides, CO,

and VOC based on the test data and MPCA

guidance. Future performance tests based on

one-year (12-month), 36 month, and 60 month

intervals, or as applicable, shall be required

upon written approval of the MPCA.

GP010
TABLE B: ONE TIME SUBMITTALS OR NOTIFICATIONS

Facility Name: US Steel Corp - Minntac

Permit Number: 13700005 - 006

B-4 06/05/13

Testing Frequency Plan due 60 days after Initial Performance Test.

For each of Lines 6 and 7, the plan shall

specify a testing frequency for fluorides, CO,

and VOC based on the test data and MPCA

guidance. Future performance tests based on

one-year (12-month), 36 month, and 60 month

intervals, or as applicable, shall be required

upon written approval of the MPCA.

GP011

Testing Frequency Plan due 60 days after Initial Performance Test.

The plan shall specify a testing frequency

based on the test data and MPCA guidance.

Future performance tests based on one-year

(12 month), 36 month, and 60 month intervals,

or as applicable, shall be required upon

written approval of the MPCA.

GP007, GP014, GP015, GP016, GP019,

GP021, GP023, GP024, GP025, GP026,

GP028

Testing Frequency Plan due 60 days after Initial Performance Test.

The plan shall specify a testing frequency for

fluorides, CO, and VOC based on the test

data and MPCA guidance. Future

performance tests based on one-year

(12-month), 36 month, and 60 month

intervals, or as applicable, shall be required

upon written approval of the MPCA.

GP009
TABLE B: RECURRENT SUBMITTALS

Facility Name: US Steel Corp - Minntac

Permit Number: 13700005 - 006

B-5 06/05/13

What to send When to send Portion of Facility Affected

Ambient Air Monitoring Report due 45 days after end of each calendar

quarter following Effective Date of Permit:

total suspended particulate matter (TSP)

monitoring reports to determine compliance

with the Minnesota Ambient Air Quality

Standards for TSP. Ambient monitoring will

be conducted for a 3 year period, as provided

by Attachment B to the September 17, 1999,

Stipulation Agreement. Monitoring may be

extended if violations occur.

Total Facility

Cylinder Gas Audit (CGA) Results Summary due 30 days after end of each calendar

quarter following end of the calendar quarter

in which the Audit was performed. A CGA is

not required during any calendar quarter in

which a RATA was performed.

MR001, MR002, MR003, MR004, MR005

Excess Emissions/Downtime Reports (EER's) due 30 days after end of each calendar

quarter following Initial Startup of the Monitor.

Submit Deviations Reporting Form DRF-1 as

amended. The EER shall indicate all periods

of monitor bypass and all periods of

exceedances of the limit including

exceedances allowed by an applicable

standard, i.e., during starup, shutdown, and

malfunctions. The EER must be submitted

even if there were no excess emissions,

downtime or bypass during the quarter.

Total Facility

Semiannual Deviations Report due 30 days after end of each calendar

half-year following Initial Performance Test.

The Permittee shall report occurrences when

the measurements of the wet scrubber gas

stream pressure drop (or gain) and scrubbing

liquid flow differ by more than 30%, plus or

minus, from the average obtained during the

most recent performance test.

SV122, SV131

Semiannual Deviations Report due 30 days after end of each calendar

half-year starting 02/26/2003 . The first

semiannual report submitted by the Permittee

shall cover the calendar half-year in which the

permit is issued. The first report of each

calendar year covers January 1 - June 30.

The second report of each calendar year

covers July 1 - December 31.

Total Facility

Semiannual Deviations Report due before end of each half-year following

Initial Performance Test. The Permittee shall

report occurrences when the measurements

of gas stream pressure drop (or gain) and

liquid flow rate of CE 070 differ by more than

30%, plus or minus, from the average

obtained during the most recent performance

test.

GP028

Compliance Certification due 31 days after end of each calendar year

starting 02/26/2003 (for the previous calendar

year). To be submitted on a form approved

by the Commissioner <, both to the

Commissioner, and to the U.S. EPA regional

office in Chicago>. This report covers all

deviations experienced during the calendar

year. < The EPA copy shall be sent to: Mr.

George Czerniak, Chief, Air Enforcement and

Compliance Assurance Branch, Air and

Radiation Division, EPA Region V, 77 West

Jackson Boulevard, Chicago, Illinois 60604>

Total Facility

Emissions Inventory Report due 91 days after end of each calendar year

starting 02/26/2003 (April 1). To be submitted

on a form approved by the Commissioner.

Total Facility
APPENDIX MATERIAL

Facility Name: US Steel Corp ‐ Minntac

Permit Number: 13700005‐006

   

1. Types of Biomass Authorized for the Rotary Kiln Burner at Minntac

2. Visible Emission Checklists (for Permit No. 13700005‐001)

3. Minntac Modeling Parameters (for Permit No. 13700005‐004)
1.  Types of Biomass Authorized for the Rotary Kiln Burner at Minntac

The following materials are allowed to be fed to the rotary kiln burner at Agglomerator

Lines 3 through 7 at U.S. Steel Minntac.

Wood based

Cedar chips without bark attached

Cedar chips with some bark attached

Pine chips without bark attached

Planed chips from clean unadulterated wood

Bark

Logging residue

Sawdust from clean unadulterated wood

Sander dust from clean unadulterated wood

Agricultural Based

Millet hulls

Sunflower hulls

Sunflower screenings

Corn stover

Rice hull

Oat hulls

Distiller’s grain

Flour dust screenings

Elevator screenings of wheat, soy, and oat

Hay

A small portion of unspecified types of grasses
2.  VISIBLE EMISSION CHECKLISTS (for Permit No. 13700005‐001)

Daily Stack Emissions Inspection

Fabric filters (baghouses):  The units that are equipped with MPCA‐approved broken bag

detectors are not subject to daily stack emission inspection.

Visible Emission Checklist(s):

1) Initials of observer;

2) Date and time of observation;

3) Indication of process and control equipment performance, either “requires attention,”

or “does not require attention.”  This determination is based upon an observed change

in visible emission characteristics from that observed when this source and its pollution

control equipment are properly operated and maintained.  A change in visible emission

characteristics will be indicative of “requires attention.”

4) Facility identification of emission unit;

5) Short description of emission unit.

The Permittee shall retain a central facility checklist of the following information to support

the Visible Emission Checklist(s):

1) Description of investigation and corrective actions completed for each “requires

attention” observation marked on the Visible Emission Checklist(s);

2) Weather conditions (air temperature, cloud cover, wind speed and direction,

precipitation);

3) A key which will enable an inspector to cross reference the identification numbers or

names used on the Visible Emission Checklist(s) to the Emission Unit (EU), Stack/Vent

(SV), and Control Equipment (CE) numbers used in the Part 70 permit.

An example checklist & instructions

Visual inspection of each stack is to be recorded on day shift Sunday through Saturday.

Record “OK” if equipment does not require attention.

Record “RA” if equipment requires attention to reduce visible emissions from the stack.

Record actions taken to remedy problems that require attention (“RA” items).

Record “Moist” if moisture plume limits visible emissions observations.

If the unit is down for more than one hour and the service area is active, notify the

Environmental Engineer with the following information:  Unit number, time it went down,

why it went down, and when it is expected to be operating again.

At the end of each week, send completed inspection form to Environmental Engineer to file.

EU GP SV Operator ID Service Area Sun Mon Tue Wed Thu Fri Sat

         
         

     Year ________ Date →    

     Time →    

     Initials →    

Record corrective actions or comments for each “RA.”  Also record pressure drop and/or

water pressure/flow for each unit that moisture plume interferes with the observation.

Date ___/___/______   Employee __________________  #  ____________________

Fugitive Emission Sources

FS Description FS Description

1 Surface overburden stock pile 15 “Group 13?” screened pellets stock pile

2 Unpaved road for heavy‐duty vehicles 16 “Group 13?” screened fines stock pile

3 Unpaved road for secondary vehicles 17 Step I/II crude ore stock pile

6 Ballast feed rock stock pile‐east pit 18 Step III crude ore stock pile

7 Ballast feed rock stock pile‐west pit 20 Step II concentrate stock pile

8 Ballast product rock stock pile‐east pit 21 Step III concentrate stock pile

9 Ballast product rock stock pile‐west pit 22 Step I/II pellet main stock pile

10 Ballast fines rock stock pile‐east pit 23 Step I/II pellet auxiliary stock pile

11 Ballast fines rock stock pile‐west pit 24 Step III pellet stock pile
3.  Minntac Modeling Parameters for the Indurating Process Modification

(for Permit No. 13700005‐004; still relevant to Permit No. 13700005‐005)

June 7, 2005 Class I increment model inputs (with 13,300 ton NOx /yr)

Line 3 values are for old configuration – that was without a wet scrubber or a multiclone.

Stack Informaiton Emissions,

lb/hr

Modeled Parameters

MPCA ID Plant ID Description PM10* NOx Stack

Height**, ft

Stack

Exit

Temp, oF

Velocity

at

Exit,ft/m

in

Stack Exit

Diameter

,ft

SV 103 247‐03‐1 Line 3 waste

gas

190 484 116 224 4825.6 10

SV 118 247‐04‐1 Line 4 waste

gas

68.2 670 136 125 3925.6 14

SV 127 247‐05‐1 Line 5 waste

gas

68.2 670 136 125 3925.6 14

SV 144 247‐06‐1 Line 6 waste

gas

81.6 670 142.25 110 2238.1 16

SV 151 247‐07‐1 Line 7 waste

gas

81.6 670 142.25 110 2238.1 16

* Both fiterable and condensable are included in the PM10 emission rate modeled.

** Stack height above the ground.

January 24, 2005 Regional Haze model inputs (post‐modification)

Line 3 values are for old configuration – that was without a wet scrubber or a multiclone.

Post‐modification with NOx at 13,300

ton/yr*

Line 3 Line 4 Line 5 Line 6 Line 7

SO2 (lb/hr) 224.7 174.7 174.7 272.7 272.7

Primary SO4 (lb/hr) 26.9 22.3 22.3 26.8 26.8

NOx (lb/hr) 484.0 670.0 670.0 670.0 670.0

PM10 filterable (lb/hr) 162.2 44.2 44.2 52.8 52.8

PM10 condensable (lb/hr) 27.8 24.0 24.0 28.8 28.8

Organic carbon (lb/hr) 1.0 1.7 1.7 2.0 2.0

Elemental carbon (lb/hr) 0.5 0.7 0.8 3.5 3.5

Other particulate (lb/hr) 161.8 43.5 43.4 49.3 49.3

* Annual emissions for NOx are based on hourly averages calculated on a 12‐month rolling

sum.

January 24, 2005 Regional Haze model inputs (pre‐modification)

Pre‐modification Annual Emissions Line 3 Line 4 Line 5 Line 6 Line 7
SO

2 (lb/hr) 0.0 192.0 190.0 318.0 315.0

Primary SO

4 (lb/hr) 0.0 36.0 25.0 17.0 16.0

NO

x (lb/hr) 0.0 569.0 528.0 305.0 305.0

PM10 filterable (lb/hr) 0.0 470.0 320.0 34.0 33.0

PM10 condensable (lb/hr) 0.0 38.0 26.0 18.0 18.0

Organic carbon (lb/hr) 0.0 0.9 0.6 1.3 1.3

Elemental carbon (lb/hr) 0.0 0.0 0.0 1.7 1.7

Other particulate (lb/hr) 0.0 470.0 320.0 32.3 31.3