U. S. Steel Corporation 

Minnesota Ore Operations 

P.O. BOX 417 

Mt. Iron, MN 55768 

CERTIFIED MAIL 7009 0820 0001 3944 7239 

August 5,201 1 

Air Quality Permit Document Coordinator 

Minnesota Pollution Control Agency 

520 Lafayette Road North 

St. Paul, Minnesota 55155-4194 

Dear Sir or Madam: 

Enclosed is an application for a major amendment requested by United States Steel 

Corporation, Minnesota Ore Operations - Minntac Facility (Minntac) to Air Permit 

13700005-005. The required forms are as listed below in the attachments. According to 

Minn. R. 7007.1500, subp. 1(A), Minntac is requesting this amendment due to a significant 

change in monitoring, record keeping, or reporting requirements with the installation of 

pollution control equipment that has a higher removal eEciency for particulate matter, sulfur 

dioxide, and mercury. The pollution control equipment installation replaces a wet scrubber 

with electrostatic precipitators, fluidized bed dry scrubbers, and activated carbon injection. 

As required, two copies of the application are enclosed, along with a check to cover the 

application fee. If there are any additional questions regarding this application, please 

contact me at 218-749-7203 or scampbell@uss.com 

Sincerely, 

steph&i Campbell 

Environmental Control Engineer 

United States Steel Corporation 

Minnesota Ore Operations 

Cc: Suzanne Baumann- MPCA 

W/O attachments 

Attachments: SCP-01 

CH-GI-01 

CH-00 

CH-01 

CH-02 

CH-03 

CH- 14 

CH-15 

Submittal Cover Page 

Facility Information 

Project Screening 

Change Description 

Action Type Determination 

Major Permit Amendment Determination 

Complete Application Checklist 

SIP Changes and Permits 
Determination of New Source Review Status 

Determination of Increases at Major Sources 

Detelmination of GHG Status Under New Source Review 

Applicability of New Source Performance Standards 

Applicability of Part 61 NESHAP 

Applicability of Part 63 NESHAP 

Crossing Permit Thresholds 

Applicability of State Rules 

Compliance Plan 

Facility Emissions Summary 

Requirements CAM 

CAM Plan 

Process Flow Diagram 

Staclc Vent Diagram 

StacldVent Information 

Pollution Control Equipment Information 

Compliance Plan for Control Equipment 
@$ Minnesota Pollution 

Control Agency 

520 Lafayette Road North 

St. Paul, MN 55155-4194 

SCP-01 : Submittal Cover Page 

Permit ApplicationlNotificationl 

Determination Request Fee Submittal 

Air Quality Permit Program 

Doc Type: Permit Application 

Instructions on Page 6 

la) AQ Facilily ID No.: 13700005 I b) AQ File No: 

2) Facility Name: United States Steel Corporation-Minnesota Ore Operations, Minntac 

3) Choose one of the following options and complete the appropriate section of item 3 

17 Submittal is the final version of a previously-submitted permit application, additional or supplemental information needed to 

complete a previously-submitted permit application, or a request that the Minnesota Pollution Control Agency (MPCA) 

make an applicability determination. Complete Section 3A. 

Submittal is a replacement for a previous application that was returned as incomplete and (choose one of the following) 

This application is the same type of application (e.g., a minor amendment application replacing a minor 

amendment application or a Part 70 permit application replacing a Part 70 permit application ) or a "lower level" 

application (e.g.. a minor amendment application replacing a major amendment application or a state permit 

application replacing a Part 70 permit application) and the scope of the project(s) has not changed from that 

covered in the application that was returned - Complete Section 3A. 

This application is a "higher level" application than the one that was returned (e.g., a major amendment application 

replacing a minor amendment application or a Part 70 permit application replacing a state permit application) - 

Complete Section 3B. 

The scope of the project@) included in this application is larger or different than the scope of the project@) 

included in the application that was returned (e.g., the project has been changed or expanded or you are including 

an additional project within the same application) - Complete Section 3B. 

Submittal is an original application for an individual Part 70 or State permit, an original application for reissuance of an 

individual Part 70 or State permit, or an original application for an amendment to an existing individual Part 70 or State 

permit. Complete Section 38. 

S~bmillal is a new application for a Registration Perfnil, Capped Pcrlnit, or General Permil, or a new applicar~on for an 

administrat've change lo an ex'sting Registra~ion. Capped, or Genera Perm~l. Co~nploto Soction 3C. 

Submittal is a notification required under Minn. R. 7007.1 150(C); Minn. R. 7007.1250, subp. 4; or Minn. R. 7007.1350 (note 

that this will not apply to holders of current Registration permits or Capped permits). Complete Section 3D. 

Section 3A - Request for Applicability Determination, Replacement for a Returned 

Application, Recertification of a Previously-Submitted Permit Application, or Supplement to a 

Previously-Submitted Permit Application 

Use this section only if your submittal is one of the following: 

The final version of a previously submitted permit application, incorporating changes negotiated through the permitting 

process, or 

Submittal of missing or supplemental information to a previously submitted application that was deemed condilionally 

incomplete, or was deemed administratively complete but additional information was requested, or 

Replacement for an application that was returned as incomplete, where the replacement application is for the same or 

"lower" type of permit or amendment (i.e., a minor amendment application replacing a minor or major amendment 

application, or a state permit application replacing a state or Part 70 permit application), and the scope of the project to 

be permitted has not changed from that proposed in the returned application. 

A request for the MPCA to make an applicability determination. 

Enter the "tracking number" obtained from the MPCA permit staff working on the permit. 

Do not use this section if this is the submittal of your original application, or if your original application was returned and you are 

resubmitting an application for a "higher level" (e.g. a major amendment application replacing a minor amendment application) 

type of permit or if the scope of the proposed project has changed from that proposed in the returned application (use Section 

3B or 3C, as applicable). 

Check one of the boxes below. Do not complete Sections 38, 36, or 3D. Continue with item 4 of the form. 

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aq-fl-scpOl . 4/6/11 Page 1 of 9 
Section 38 - Application for an lndividual Part 70 or State Permit, Reissuance of an lndividual 

Part 70 or State Permit, or Amendment of a Part 70 or State Permit 

Use this section only if your submittal is one of the following: 

. An original application for an individual Part 70 or State permit, or 

. An original application for reissuance of an individual Part 70 or State permit, or 

Recertification of a previously-submitted permit application -Tracking No: 

Supplement to a previously-submitted permit application - Tracking No: 

[7 Replacement for a previous application that was returned as incomplete. Tracking 

No. of returned application: 

An Applicability Determination Request 

. A rep accment Part 70 or stale perm'l application whcn a prev:ously s.~bmitted Part 70 or state permit appl:cation 

was returned to vou as incom~lete. and vou nave chanaed the scope of the proiect from wha~ was proposcd in 

Points 

N A 

N A 

N A 

x 10= 

Quantity 

- 

N A 

N A 

NA 

. . - . . . . 

the application that was returned, or 

An original application for an amendment to your existing individual Part 70 or State permit, or 

A replacement amendment application when the previously submitted amendment application was returned to you 

as incomplete, and 

you are applying for a "higher level" amendment (e.g., a major amendment application replacing a minor 

amendment application); or 

you have changed the scope of the project from what was proposed in the application that was returned. 

Total Points 

N A 

N A 

N A 

Do not use this section if this is a final version of a previously-submitted application, or if you are only supplementing a 

previously-submitted permit application; use Section 3A instead. 

Do not use this section if you are applying for a Registration Permit. Capped Permit, or General Permit, or an 

administrative change to an existing Registration, Capped, or General Permit. 

Check as many of the boxes below as apply. Do not complele Secl'on 3C. If yoJr suomitlal also 'ncludes nol:fications that 

do not require a perm'r applicat'on, also complete Scclion 3D. Continue with itcm 4 of the form 

Existing Permit Expiration Date: 

Application for a Moderate Amendment to an lndividual State or Part 70 permit 

Additional Information (check all that apply): 

Permit will replace an existing permit of a different type (e.g.. replacing a Capped Permit with an individual State permit, or 

replacing a Part 70 General permit with an individual Part 70 permit) 

Permit is for construction of a new facility - Also complete and submit forms CH-00 and CH-01 as part of the application 

Form CH-00 attached Form CH-01 attached 

Permit's required because of a modficalion to an existing fac'lty, lnaking !he facif~ty subject for the first lime for thc reqiirement 

for an air emission permit - Also comp ete and submit forms CH-00 and CH-01 as part of the applical on 

Form CH-00 attached Form CH-01 attached 

www.pca.state.mn.us 651-296-6300 . 800-657-3864 . lTY 651-282-5332 or 800.657-3864 . Available in alternative formats 

oq-fl-scp0l - 4/6/11 Pose 2 of 9 
Project is subject to Prevention of Significant Deterioration (PSD) (40 CFR 5 52.21) 

Send a complele copy of the application to U.S. Environmental Protection Agency (EPA) Region V (see instructions). 

Contact EPA Region V to begin the Endangered Species Assessment process (see instructions). 

Permit is required because of installation or modification of a Part 61 National Emission Standards for Hazardous Air Pollutants 

(NESHAP) and/or a Part 60 NSPS Affected Facility at a Stationary Source with Potential-to-Emit below all permit thresholds 

(Minn. R. 7007.0500, subp. Z.C.(l)). 

Section 3C - Application for a Registration, Capped, or General Permit 

Use this section only if your submittal is one of the following: 

An new application for a Registration Permit, or 

. An new application for a Capped Permit, or 

. An new application for a General Permit; or 

An administrative change to an existing Registration. Capped, or General Permit 

Do not use this seclion if this is a final version of a previously-submitted application, or if you are only supplementing a 

previously-submitted permit application, use Section 3A instead. 

Do not use this section if you are applying for an individual Part 70 or State Permit. 

Check as many of the boxes below as apply. Do not complete Section 3D. Continue with item 4 of the form 

Additional Information (check all that apply): 

Permit will replace an existing permit of a different type (e.g., replacing a Registration Permit with a Capped Permit; 

replacing an Option 8 Registration Permit with an Option D Registration Permit; etc.) 

Choose one of the following: 

Application for a Registration Permit 

Option A [7 Option 8 Option C Option D 

Application for a Capped Permit 

Option 1 Option 2 

Application for a Part 70 General Permit 

Manufacturing General Permit Fiberglass General Permit 

Application for a State General Permit 

Nonmetallic Mineral Processing General Permit 

Application for an Administrative Change to an existing Registration, Capped, or 

General Permit (e.g., change of facility ownership; see instructions for more) 

Permit is required for construction of a new facility 

17 Permit is required because of a modification to an existing facility, making the facility subject for the first time for the requirement 

for an air emission permit 

Section 3D - Notification required under Minn. R. 7007.1 150(C); Minn. R. 7007.1 250, subp. 

4; or Minn. R. 7007.1350. 

Use this seclion only if your submittal includes one or more of the notifications listed below. If your submittal also includes 

an application for an individual Part 70 or State permit, an amendment to an individual Part 70 or State permit, or 

reissuance of an individual Part 70 or State permit, also complete Section 38. Check all applicable boxes below, then 

continue with item 4 of the form. 

A Notification of Accumulated Insignificant Activities 

A Notification of Installation of Pollution Control Equipment 

A Notification of Replacement of a Unit 

A Notification of Replacement of Controls with Listed Controls 

A Notification of Changes That Contravene a Permit Term 

Quantity Total Points 

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aq-fl-scp0l . 4/6/11 Page 3 of 9 

Points 

x 2= 

x 4= 

x 4= 

x 3= 

x I= 
4) Total Points (add all "total points" from Sections 3A, 38, and 3C) 25 

5) Total Application Fee 25 x $285 = $7125 

(total points from item 4) (fee amount) 

The applicalion fee amount is $285 per point, payab,e lo the MPCA. Send your paylnenr ('fee amo-nt) with yoJr submittal. The 

fec is not rcfundablc. per Minn. R. 7002 0016, subp. 1. There may be addtional fees assesseo during processing of your 

request, as required by Minn. R. ch. 7002. 

6a) Confidentiality Statement: 

This application does not contain material claimed to be confidential under Minn. Stat. §§ 13.37 subd. 1(b) and 116.075. 

Skip ltem 6b. go to ltem 7. 

Tnis appllcalion conta:ns material wn;ch is claimed to oc confdential under Minn. Stal. $5 13.37 s~bd. l(b) an0 116.075. 

Complcle ltem Gb. Yo~r submittal must Include both Contdential and Pub .c versions of yo.lr applicat'on. 

Registration Permit applicants may not claim any portion of their application as confidential. If applying for a 

Registration permit or an administrative change to a Registration Permit, you must check the first box above ("This 

application does not contain.....") 

Confidential Copy of Application attached Public Copy of Application attached 

6b) Confidentiality Certification 

To certify data for the confidential use of the MPCA, a responsible official must read the following, certify to its truth by filling in 

the signature block on the following page, and provide the stated attachments. 

I certify that the enclosed permit application(s) and all attachments have been reviewed by me and do contain 

confidential material. I understand that only specific data can be considered confidential and not the entire application 

or permit. I certify that I have enclosed the following to comply with the proper procedure for confidential material: 

I have enclosed a statement identifying which data contained in my application I consider confidential, and I 

have explained why I believe the information qualifies for confidential (or non-public) treatment under Minnesota 

Statutes. 

5 I have explained why the data for which I am seeking confidential treatment should not be considered 

"emissions dala" which the MPCA is required to make available to the public under federal law. 

I have enclosed an application containing ail pertinent information to allow for completion and issuance of my 

permit. This document has been clearly marked "confidential". 

I have enclosed a second copy of my application with the confidential data blacked out (not omitted or deleted 

entirely). It is evident from this copy that information was there, but that it is not for public review. This 

document has been clearly marked "public copy". 

Permittee responsible official: Co-Permittee responsible official (if applicable) 

Mr./Ms. Mr.lMs. 

Title: Title: 

Signature: Signature: 

Date: Date: 

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aq-fl-scpOl 4/6/11 Page 4 of 9 
7) Submittal Certification 

I certify under penalty of law lhal the enclosed doc~lnonfs atlo all attachments were prepa~cd under my d~rect~on or sJpcwision 

in accordance w ~~ ~ in a svstem , oesial~cd to assue !hat aualifico uersonne. Drouerlv gather and eval~ate thc information . .- submitted. Based on my inquily oithe person or per~&~ who manage the system, or those persons directly responsible for 

gathering the information, the information submitted is, to the best of my knowledge and belief, true, accurate, and complete. 

I also certifv. in accordance with Minn. R. 7007.0500, sub^. 2 (K)(2) and subp. 2 (K)(3), that I have reviewed the procedures . .. . 

implement&l by my facil'iy to mainrain compliancc and that thosc proccdures arc, io the best of my know.edye and belief 

reasonable to maintain compliancc with all app icable requiremcnls, lncluaing those lnat will oecomc applicahle 0-r ng 1l1e term 

of the ~ermit, 

Permittee responsible official: Co-Permittee responsible official (if applicable) 

Signature: 

Date: 

8) Package Submittal 

Applications, notifications, and/or requests that are submitted without authorized signature@) (under Submittal Certification for 

all applications and under Confidentiality Certification if you are seeking confidential treatment of any information in the 

application); without required forms, andfor without the required application fee, will be returned. Please make your check out to 

the Minnesota Pollution Control Agency. Send the complete application package and check to: 

Minnesota Pollution Control Agency 

Air Quality Permit Document Coordinator 

Industrial DivisionlAir Quality Permits Section 

520 Lafayette Road North 

St. Paul, MN 55155-4194 

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aq-fl-scp0l . 4/6/11 Page 5 of 9 
& Minnesota Pollution 

Control Agency 

520 Lafayette Road North 

St. Paul, MN55155-4194 

CH-GI-01 

Facility Information for Permit Changes 

Air Quality Permit Program 

Doc Type: Permil Application 

Instructions on Page 3 

la) AQ Facility ID No.: 13700005 Ib) AQ File No.: 

2) Facility Name: United States Steel Co~poration - Minnesota Ore Operations, Minntac 

3) Facility Location 

Street Address: 8819 Old Highway 169 

City: Mt. Iron County: St. Louis Zip code: 55768 

Note: If the facility is or will be located within the city limits of Minneapolis, attach a map showing the exact location. 

Mailing Address: P. 0. Box 417 

City: Mt. Iron State: MN Zip code: 55768 

4) CorporatelCompany Owner 

Name: U. S. Steel Corporation 

Mailing Address: 600 Grant Street 

City: Pittsburgh State: PA Zip code: 15219 

Owner Classification: Private Local Govt. 5 State Govt. Federal Govt. Utility 

5) CorporateICompany Operator (if different than owner) 

Name: 

Mailing Address: 

City: State: - Zip code: 

6) Co-permittee (if applicable) 

Name: 

Mailing Address: 

City: State: - Zip code: 

7) Legally responsible official for this permifffacility 

MrIMs: Thomas Icelly Phone: (218) 749-7592 

Title: General Manager Fax: (21 8) 749-7293 

At (check one): Owner Address Operator Address Emission Facility Address 

tl Other (specify): 

8) Contact person for this permit 

MrlMs: Chrissy Bartovich Phone: (218) 749-7364 

Title: Manager -Environmental Services Fax: (218) 749-7360 

At (check one): Owner Address Operator Address Emission Facility Address 

Other (specify): 

www.pca.state.mn.us . 651-296-6300 800-657-3864 TTY 651-282-5332 or 800-657-3864 . Available in alternative formats 

aq-pchgi01 8/27/09 Page I of 4 
E-mail address: clbartovich@uss.com 

9) All billings for annual fees should be addressed to: 

MrlMs: Stephani Campbell Phone: (218) 749-7203 

Title: Environmental Control Engineer Fax: (218) 749-7360 

At (check one): Owner Address Operator Address rn Emission Facility Address 

17 Other (specify) 

10) Standard Industrial Classification (SIC) Code and description for the facility: 

Primary: 1011 I Iron Mine and Taconite Processing Facility 

Secondary (if applicable): I 

Tertiary (if applicable): I 

11)' Primary product produced (or activity performed) at the facility is: 

12) Facility is: rn Stationary Portable 

13) (reserved for future use) 

14) Is environmental review required (either an Environmental Assessment Worksheet (EAW) or an Environmental Impact 

Statement (EIS)) for this facility? 

No Yes -- you may also be required to perform a stale airtoxics review for your facility. Please call 1-800-657- 

3864 or locally 651-296-6300. 

15) Are you (or will you be, if this is a new facility) required to submit a Toxics Release Inventory (Form R) under SARA Title 313 

for this facility? Contact the Minnesota Emergency Planning and Community Right-to-Know Act (EPCRA) Program for more 

Information. at 651-201-7400. 

Yes - Answer Question 15a [XI No - Go on to Question 16 

15a) Are you required to submit a Pollution Prevention Plan Progress Report in accordance with Minn. Stat. 5 115D.08? 

No Yes, and the most recently required progress report has been submitted 

Yes, but a progress report has not been submitted because: (fill in reason below) 

16) Is this facility within 50 miles of another state or the Canadian border?: 

Yes (specify which ones) Canada 17 NO 

17) Are you proposing any alternative operating or emissions trading scenarios in this application? (see Minn. R. 7007.0800, subp. 

10 and 11) 

[XI No Yes - attach a description of your proposal, including a statement on how the proposal will meet all 

applicable requirements (specifically, please address any applicable New Source Review requirements - see Form CH-04). 

18) Person preparing this permit application: 

Mr. I Ms. Stephani Campbell 

Title: Environmental Control Engineer 

Phone: (218) 749-7203 Fax: (218) 749-7360 Date: August 5,2011 

E-mail address scampbell@uss.com 

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aq-f2-chgi0l 8/27/09 Page 2 of 4 
Minnesota Pollution 

Control Agency 

520 Lafayette Road North 

St. Paul, MN55155-4194 

Project Screening 

Air Quality Permit Program 

Doc Type: Permit Applicalion 

AQ Facility ID No.: 13700005 AQ File No: 

Facility Name: United States Steel Corporation-Minnesota Ore Operations, Minntac 

Instructions: Fill out this form last, afler you've determined the type of permit you need. 

Check all applicable boxes on this form that describe your proposed project and yourfacility. 

Applicable Analyses: 

My project requires an Environmental Assessment Worksheet. 

Submitted to (who?): on (date mmlddlyyyy): 

My project requires an Environmental Impact Statement 

Submitted to (who?): on (date mmlddlyyyy): 

My project requires a Prevention of Significant Deterioration (PSD) permit, utilizes the Plant-wide Applicability Limit 

requirements of 40 CFR § 52.21, andlor involves a Best Available Control Technology (BACT) Analysis (either a new 

analysis or revisions to previous permit conditions). 

My project involves a case-by-case Maximum Achievable Control Technology (MACT) determination under section 

112(g)(Z)(B) of the Clean Air Act Amendments of 1990 as described on form CH-07. 

My project involves a site-specific alternative monitoring request under 40 CFR § 60.13(i) or 40 CFR § 63.8(f) 

[7 My project involves changes to limits or requirements that are identified as State Implementation Plan (SIP) 

requirements in my permit or Administrative Order. (Use Form CH-15 to determine this.) 

My project involves ambient air dispersion modeling for criteria pollutants. 

Modeling protocol was approved on (date mmlddlyyyy): 

Modeling results submitted to (who?): on (date mmlddlyyyy): 

Modeling follows protocol exactly [7 Modeling mostly follows protocol but with minor changes 

My project involves an Air Emissions Risk Analysis (AERA). 

Submitted to (who?): on (date mmlddlyyyy): 

My project requires at least one other media permit in addition to an air permit (list permits: e.g., National Pollutant 

Discharge Elimination System [NPDES] permit). 

Application submitted to (who?): on (date mmlddlyyyy): 

N None of the above 

Industry Sector: 

Petroleum refining 

Pulp andlor paper mill 

Composite wood products (e.g., OSB) 

Metallic mining 

Non-beverage ethanol production 

[7 Waste combustor 

Electric utility 

None of the above 

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ag-f2-ch00 . 6/15/11 Page l of 1 
@ Minnesota Pollution Control Agency WRMIT CIIANGE FORM CH-01 

- CHANGE DESCRIPTION 

520 LAFAYETTEROAD ST. PAUL, MN 55155-4194 (EORMERLY MOD-01 MODEICATION DESCRIPTION) 

hnnin~ 

Use Form CH-02 to determine if a permit amendment is required for your proposed change or 

modification. If an amendment is reauired. arovide below a descrivtion of each ahvsical and .A A L. 

operational change, or proposed change to existing permit conditions, included in this 

avvlication. This includes addition of new units, removal or revlacement of existing units, or A A - changes which may result in debottlenecking of emission units. 

la) AQ Facility ID No.: 13700005 

lb) AQ File No. 

2) Facility Name.: United States Steel Corporation-Minnesota Ore Operations, Minntac 

3) Does your project involve construction or a physical or operational change to your facility? 

No. Go to question 5 

[XI Yes. Construction or physical change Operational change 

4) Do you need your permit issued by a certain date? 

No. Go to question 5 

Yes. Date: 

Reason: 

5) Description of proposed project 

The proposed project consists of replacing CE 126, wet scrubber, OII EUs 313-3 16, Agglomeration Line 

6, with higher efficiency controls for removing particulate matter, sulfur dioxide, and mercury. This new 

control equipment will consist of a parallel system comprised of two ESPs (CE 179-180) for particulate 

matter and two fluidized bed dry scrubbers (CE176-177) for SO2 and acid gases. The new pollution 

control system will also incorporate activated carbon injection (CE178) for reducing merculy. This 

project will also replace SV144 with a new stack SV200. 

Form CH-01 

Page 1 of 3 
6) Attach Form CD-01 to specify which applicable requirements need to be added or 

deleted from your permit. 

Form CH-01 

Page 2 of 3 
@ Cb Minnesota Pollution 

control agency 

520 Lafayette Road North 

St. Paul,MN 55155-4194 

Action Type Determination 

Air Quality Permit Program 

Doc Type: Permit Application 

la) AQ Facility ID No.: 13700005 lb) AQ File No.: 

2) Facility Name: United States Steel Corporation-Minnesota Ore Operations. Minntac 

Answer the questions on this form, referring to and completing the additional forms as directed, to determine if a permit or 

amendment is required (and if so what type), or if a notification is required. 

3. Does the proposed change or modification require a major amendment? Complete Form CH-03 and all forms referenced 

therein. 

Yes. Go to question 8. 

No. Go to question 4. 

4. Does the entire proposed change or modification consist only of insignificant activities described in Minn. R. 7007.1300, 

subparts 2 andlor 3,or conditionally insignificant activities listed in Minn. R. 7008.4100 andlor Minn. R. 7008.4110? 

I Ycs. The proposed change qual~fes as ail insignificant lnodif~carion Jsc Form CH-I2 to dnrermnc if norifcation to the 

MPCA IS rcqu'red. If nor~fcalion is required go to Form CH-14 lo detetmnn wnat tnLs1 DC s~btn'lted 

No. Part of the project is not one of the listed insignificant activities listed in Minn. R. 7007.1300, subp. 2 andlor 3. Go to 

question 5. 

5. Can the change be done through an administrative amendment? Use Form CH-08 to determine Yes or No. 

Yes. Go to Form CH-14 to determine what must be submitted. 

17 No. Go to question 6. 

6. Can the change be made through the "contravening permit terms" provision? Use Form CH-09 to determine Yes or No 

Yes. Go to Form CH-I4 to determine what must be submitted. 

No. Go to question 7. 

7. Is a minor or moderate amendment needed? Complete Form CH-10 to determine Yes or No. 

Yes. Go to question 8. 

No. Complete Form CH-12 to determine what notification or recordkeeping requirements apply. 

8. Complete Form CH-11 to determine your status with regard to crossing permit thresholds, and indicate that status below. 

This change can be made through the permit amendment provisions of Minn. R. 7007.1450 or 7007.1500, using the 

forms indicated on Form CH-14. 

This change requires issuance of a Title V or State operating permit. Include a completed Total Facility Application. 

9. Complete Form CH-I3 to determine what state rules apply to the equipment you are adding or the changes you are 

proposing. 

10. Complete Form CH-00, summarizing the category of change and industry type. 

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oqf2-chO2 . 5/23/11 Page I of 1 
&' Minnesota Pollution 

Control Agency 

520 Lafayette Road North 

St. Paul, MN 55155-4194 

Major Permit Amendment Determination 

Air Quality Permit Program 

Doc Type: Permit Application 

Instructions on Page 3 

la) AQ Facility ID No.: 13700005 

I b) AQ File No. 

2) Facility Name: United States Steel Corporation-Minnesota Ore Operations, Minntac 

To answer the questions posed in this form, you will have to complete the additional forms referenced in the individual items. 

This form refers to proposed changes and modifications. A "modification" as defined in Minn. R. 7007.0100, subp. 14, includes: 

A. any change that constitutes a title I modification ... ; or 

B. any physical change or change in the method of operation of an emissions unit, emission facility, or stationary source 

that results in an increase in the emission of a regulated air pollutant. 

A "change" is a change to permit terms or conditions, in the absence of a modification as described above. 

3) Is the proposed change or modification a title I modification? It is if the answer to any of the following is "yes": 

3a) Is the proposed change or modification subject to New Source Review? Use and submit Forms CH-04, and CH-04a or 

CH-04b, as applicable. 

Yes 

Lxl No 

3b) Is the proposed change or modification a modification or reconstruction as defined for New Source Performance 

Standards? Use and submit Form CH-05. 

I! Yes 

Lxl No 

3c) Is the proposed change or modification a hazardous air pollutant modification under Part 61 National Emission Standards 

for Hazardous Air Pollutants (NESHAPs)? Use and submit Form CH-06. 

Yes 

No 

3d) Is the proposed change or modification defined as construction or reconstruction under Part 63 NESHAPs? Use and 

submit Form CH-07. 

Yes 

No 

4) Does this modification change any permit conditions or amend existing permit requirements related to monitoring, 

reporting, or recordkeeping other than adding new requirements, eliminating the requirements if they are rendered 

meaningless because they apply to emissions that will no longer occur, or changing test methods if both the new and the old 

test methods are considered valid for the pollutant and source category (Minn. R. 7007.1500, subp. l(A))? 

rn Yes. Use and submit Form CD-Olandlor CD-05 to document such requirements. 

No 

5) Does this modification establish or amend any source-specific permit condition that is required to be based on a case-bycase determination of an emissions limit or standard, an ambient impacts analysis, visibility, or increment analysis (e.g., a 

modeling-based limit, the requirement to operate a specific control device for a specific emission unit, specific operating 

parameters for a control device, a specific control efticiency, Best Available Control Technology (BACT), Maximum 

Achievable Control Technology (MACT), etc.) (Minn. R. 7007.1500, subp. I@))? 

Yes. Use and submit Form CD-01 and/or CD-05 to document such conditions. 

rn No 

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aq-f2-ch03 . 5/23/11 Page 1 of 3 
6) Does this modification establish or amend any permit terms or conditions for which there is no underlying applicable 

reqiirement and tnat you have assumcd to avoid an applcable req~iremenr to which you wou d otherwise oc sub'ect? S.~ch 

limits are ~s~al v synthetic minor 1:mitalions s~ch as a limit on hours of operation. Plcasc notc that if yo^ would like to add 

equipmcnl under a-11 cxistng emissions cap or lmit, and tne permit does not expl'c'lly pre-authorize such additons, that is 

cons~dereo amenoing the limit or emissions cap. (M~nn. R. 7007.1500, subp. I&)). 

Yes. Use and submit Form CD-01 andlor CD-05 to document such conditions. 

El No 

7) Does this modilicat'on cstablish, amend renew, or d;strib~tc a Plantwide Applicability Limit (PAL) under 40 CFR 5 

52.21(aa)? (Th s is only available to exstng ma.or sourccs undcr New Source Review.) 

Yes. Use and submit Forms PAL-01 (and the forms referenced within PAL-01) and CD-01 to document conditions. (As of 

the date of this form, the PAL cover page (PAL-01) and the form for determination of a PAL (PAL-02) have been 

completed. The remaining forms for renewal, expiration allocation, and increasing a PAL, are not yet available.) 

€4 No 

8) Is this modification subject to classification as a major permit amendment under any other agency rule? 

Yes 

€4 No 

9) Does this modification seek to establish or amend a federally enforceable emission cap (such as a synthetic minor limit which 

limits hours of operation) which avoids classification as a part 70 source? 

[7 Yes. Use and submit Form CD-01 andlor CD-05 to document conditions. 

!a No 

If you answered "Yes" to one or more of the above questions, a major permit amendment is required. 

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oq-f2-ch03 . 5/23/11 Page 2 of 3 
Minnesota Pollution 

Control Agency 

520 Lafayette Road North 

St. Paul, MN55155-4194 

Permit Amendment Application Requirements 

Air Quality Permit Program 

Doc Type: Permit Application 

Instructions on Page 3 

la) AQ Facility ID No.: 13700005 Ib) AQ File No.: 

2) Facility Name: United States Steel Corporation-Minnesot a Ore Operations, Minntac 

3) Minn. R. 7007.0600 describes what a permit application must include. The items in the following list constitute an administratively complete application, but do not 

necessarily mean that the application is technically complete for the purpose of taking final permit action. Please complete the following to verify that you have included all 

the indicated forms and information. 

CH-04a Dererminat~on of Increases at Major Sources As drecred on Form Ch-04 . 

Cd-04b Dererm'narion of ncreases at Mnor So~rces . . B IAsczorm CH-04 .. . . .. 

a I I CH-04c Determination of Greenhouse Gas Status Under New I For all apDlications for a major, moderate, or minor amendment 

-- 

111 

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aq-p-ch14 . 6/15/11 Po2e 1 of 3 

.o 

[XI 

BACT analvsis When the proposed change or modification is major under NSR 

CH-05 Applicability of New Source Performance Standards For all applications for a major, moderate, or minor amendment 

As directed on Form CH-04a 

As directed on Form CH-04b or CH-04d 

p~ 

El 

El 

[XI 

• 

Kl 

- - 

CH-04d Calculating the Net Emissions Increase Under New 

Source Review 

CH-04e Required Elements for Prevention of Significant 

Deterioration (PSD) Permit Application 

Highlighted copy of applicable subpart(s) of 40 CFR Part 60 

CH-06 Applicability of Part 61 NESHAP 

Highlighted copy of applicable subpart(s) of 40 CFR Part 61 

CH-07 Applicabilitv of Part 63 NESHAP 

When so indicated on CH-05 

For all applications for a major, moderate, or minor amendment 

When so indicated on CH-06 

For all applications for a major, moderate, or minor amendment 
GI-03 Facility and StacWent Diagram 

When Required 

When so indicated on CH-07 

For all applications for a major, moderate, or minor amendment 

For all applications for a maior, moderate, or minor amendment 

For all applications for a major, moderate, or minor amendment 

For all applications for a major, moderate, or minor amendment, except if 

no emission calculations are required 

Whenever the proposed change or modification involves changes to 

emissions. May submit CD with application, or be prepared to email to 

MPCA staff upon request - indicate choice on GI-07 

When increasing Hg emissions from taconite production secondary metal 

production, fuel combustion for electricity generation or industrial boilers, or 

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oq-p-chi4 6/15/11 Pase 2 of 3 

Form/Requirement 

Highlighted copy of applicable subpart(s) of 40 CFR Part 63 

CH-11 Crossing Permit Thresholds 

CH-I3 Applicability of State Rules 

CD-01 Compliance Plan 

GI-07 Facility Emissions Summary 

Electronic spreadsheet containing all calculations 

HG-01 Mercury Releases to Ambient Air 

Included 

IsI 

€4 

€4 

!a 

p~~ 

[XI 

Not Included 

€4 

€3 

[SI 

GI-09H Requirements: CAM 

CAM Plan 

EMS-00 EMS Permit Qualification 

- 

W 

When adding or changing control equipment or controlled emission units at 

a Part 70 source 

When indicated on GI-09H 

When proposing to incorporate Environmental Management System (EMS) 
Instructions for Form CH-I4 

la) AQ Facility ID No. -- Fill in your Air Quality (AQ) Facility identification (ID) Number (No.). This is the first eight digits of the permit number for all permits issued 

under Minn. R. ch. 7007. 

I b) AQ File No. -- Fill in your AQ File Number. This number can be found in the "cc" section of correspondence from the Minnesota Pollution Control Agency (MPCA) 

When Required 

2) Facility Name -- Enter your facility name. 

Included FormIRequirement 

3) Complete each line of the table by checking the appropriate box, indicating that the specified form or attachment is included or not included in the application. 

Not Included 

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uqj2-chf4 . 6/15/11 Page 3 of 3 

When adding or changing fugitive sources 

To describe new, removed, or changed continuous monitoring systems 

When requesting a new Plantwide Applicability Limit (PAL) under NSR 

When requesting a new Plantwide Applicability Limit (PAL) under NSR 

When requesting a new Plantwide Applicability Limit (PAL) under NSR 

Varies -see htt~://www.~ca.state.mn.us/ox~a691 

If there is an increase of any criteria pollutant greater than 250 tons per 

year, or if it is a proposed electric production facility greater than or equal to 

25 MW, or if it is an ethanol facility increasing production by 5 million 

gallons per year, then an AERA will likely be needed - see 

htt~:l/w.~ca.~tate.mn.us/tchv42b 

If AERA is needed, or if project is subject to PSD unless only pollutant 

involved is a Volatile Organic Compound. See 

htt~:/lw.~ca.~tate.mn.us/nwah421 

GI-05D Fugitive Emission Source Information 

ME-01 Continuous Monitoring System Information 1 

PAL-01 PAL Cover Page 

PAL-02 Determination of Plantwide Applicability Limit for Major 

NSR Sources 

MI-02c Modeling for Plantwide Applicability Limitations 

Environmental Assessment Worksheet submitted 

Air Emission Risk Analysis submitted (AERA) submitted 

Dispersion modeling submitted 

!xi 

ISI 

El 

El 

!xi 

ix 

Kl 

E 
Minnesota Pollution 

Control Agency 

520 Lafayette Road North 

St. Paul, MN55155-4194 

SIP Changes and Permits 

Air QuaUty Permit Program 

la) AQ Facility ID No.: 13700005 I b) AQ File No.: 

2) Facility Name: United States Steel Corporation-Minnesota Ore Operations, Minntac 

Section I 

1.1 Does your facility have source specific State Implementation Plan (SIP) conditions contained in a Part 70 permit or a 

federally enforceable state operating permit or has your facility been issued an Administrative Order (Order) to ensure 

compliance with a national ambient air quality standard (NAAQS)? (This would include permit conditions labeled "Title I 

condition: SIP for [pollutant] NAAQS). If your facility is listed in Table 1 below, you have source specific SIP conditions. 

Yes. Check all applicable pollutants and continue with Section II 

[7 Sulfur Dioxide (S02) 

Particulate matter less than 10 microns (PMro) 

Lead 

5 No. Stop here, and submit this form with your application for a permit amendment or operating permit reissuance 

Section II 

11.1 Where are the SIP conditions that apply to yourfacility? 

17 In the current operating permit 

In the Order 

In both the current operating permit and the Order 

11.2 This permit application is for 

Reissuance of the operating permit 

An amendment to the current operating permit 

Whether you are proposing changes through an application for a facility modification, or if you are submitting a reissuance 

application and there have been changes at your facility that are not included in the current operating permit or the Order, 

complete the rest of this form considering those changes as the 'proposed change.' If your facility is subject to the Order, 

Minnesota Pollution Control Agency (MPCA) will initiate a SIP revision to transfer the Title I conditions from the Order to the 

Permit. 

11.3 Does the proposed change involve equipment or operating parameters that are subject to a Title I SIP condition in you1 

permit or a requirement from your Order? 

Yes 

No 

11.4 Does the proposed change add an emission unit@) or stacklvent that will emit the criteria pollutant(s) identified in Section I? 

Yes 

iI No 

11.5 Does the proposed change increase the emission rate of the criteria pollutant(s) at any ofthe existing emission points 

(emission unit, control equipment or stacklvent)? 

Yes 

No 

11.6 Does the proposed change increase the overall emission rate of that criteria pollutant at the facility? 

Yes 

No 

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oq-f2-ch15 . 6/26/08 Page l of 3 
Section III 

Review the SIP modeling parameters for your facility. These are usually found in an appendix to your permit or in your Order. For 

the proposed change at your facility, check all that apply: 

Addition of new emission point@) for the criteria pollutant 

Removal of existing emission point@) for the criteria pollutant 

Change in one or more modeled stacklvent heights or diameter 

Increase in stack height [7 Increase in stack diameter 

Decrease in stack height [7 Decrease in stack diameter 

Change in modeled air flow rate@) 

lncrease in air flow rate@) 

Decrease in air flow rate@) 

Change in one or more modeled emission rates 

lncrease in emission rate@) 

Decrease in emission rate($ 

Change in location of one or more emission points 

Change in exit point temperature 

lncrease in temperature 

Decrease in temperature 

Change in building locations or dimensions 

Other 

No change to current modeling parameters 

If there are any changes to the modeling parameters, you will need to demonstrate that the plume dispersion characteristics of the 

criteria pollutant will be equivalent to or belter than the dispersion characteristics modeled using the parameters included as noted 

in the appendix of your permit or in your Order. In many cases you will need to remodel to show attainment with the NAAQS. 

However, in some cases you may be able to provide a written justification for improved dispersion characteristics. 

If you will need to do modeling, it is recommended that you check the MPCA website or contact MPCA staff for guidance on current 

SIP modeling. SIP modeling requirements may be different than modeling for other programs and may have changed since 

previous modeling was done for your facility. See the MPCA's on-line SIP and modeling information at 

http://www.pca.slate.mn.uslair/sip.html and http://w.pca.state.mn.us/air/modeling.html for current contact information. 

Section IV 

Will the proposed change require a SIP revision? 

In general, a SIP revision is not required if you are making a change to the facility that does not increase, from any emission point, 

the emission rate of the criteria pollutant or alter equipment or parameters used as the basis for modeling of the criteria pollutant. 

If vou answered "Yes" to any of the auestions in Section I1 or have identified changes to the modeling parameters for your facility in 

section Ill, you will likely nekd a ~l~revision for your project. If a SIP revision is required for a modification amendment, you must 

submit a maior amendment auplication. If the proposed change includes an increase in emissions of the criteria pollutant or if it is 

new construction, the current i/tle I SIP condit/ons in your permit or the conditions in your Order for your facility must be followed 

until the SIP revision is approved by U.S. Environmental Protection Agency (EPA). If the proposed change will reduce emissions or 

will provide better modeled dispersion characteristics that change may proceed with MPCA and EPA approval. 

When a SIP revision is part of your permit reissuance or amendment, approval of the reissuance or modification application will 

include more steps and take more time than the general process for a permit issuance. The SIP revision includes review and 

approval of the permit application by MPCA, including public notice of the permit. The SIP revision requires a public notice (which 

may occur concurrently with the permit notice of the draftlproposed permit); EPA generally does a preliminary review of the SIP 

revision at this time. There is an opportunity for interested parties to request a public meeting during the public notice period. Afler 

MPCA's public notice period ends for the draftlproposed permit, MPCA submits the SIP revision to EPA for a formal review and 

approval. Final approval of the SIP revision occurs when EPA publishes the revision as a final rule in the federal register. 

www.pca.state.mn.us . 651-296-6300 . 800-657.3864 . nY 651-282-5332 or 800-657-3864 Available in alternative formats 

oq-f2-chl5 6/26/08 Pose 2 of 3 
Table 1 Facilities with Source Specific SIP Conditions 

Twin Cities 7-Counly Area 

Area 

Eagan 

Rochester 

RosemountlPine Bend 

St. Paul ParWAshland 

Pollutant 

Lead 

PM 10 

St. Paul 

(Childs Road and Red Rock Road) 

Facility 

Gopher Resources Corporation 

Rochester Public Utilities 

Rochester Public Utilities . ( . Cascade Creek 

I / = Silver Lake I 

Associated Milk Producers - Rochester 

Mayo - Franklin Heating Station 

1 I IBM - Rochester 1 I ( Olmsted Waste to Energy I I Mayo - St. Mary's Hospital 

Federal Cartridge Company-Anoka I 

Hoffman Enclosures Inc. 

Xcel Energy 

. lnver Hills Generating Plant 

- Riverside Generating Plant 

GAF Materials Corporation 

I I Gerdau Ameristeel US Inc. -St. Paul Mill 

SO 2 

SO 2 

PM1o 

Great Western Dock and Terminal 

Lafarge North America (Red Rock and Childs Road Terminals) 

NRG - Minneapolis Energy Center Minneapolis LLC 

Flint Hills Resources LD - Pine Bend Refinery 

Marathon Petroleum Ca LLC 

Aggregate Industries, Yard A 

Cenex Harvest States Coop- Elevator 2 

Commercial Asphalt, Inc. Plant 905 

I / Met Council Wastewater Treatment Plant 

St. Paul Terminals 

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aq-f2-ch15 . 6/26/08 Page 3 of 3 
& m! Minnesota Pollution 

Control Agency - 

520 Lafayette Road North 

St.Paul,MN 55155-4194 

Determination of New Source Review Status 

Air Quality Permit Program 

Doc Type: Permit Application 

la) AQ Facility ID No.: 13700005 I b) AQ File No.: 

2) Facility Name: United States Steel Corporation-Minnesota Ore Operations, Minntac 

3) Is your facility defined as one of the following types of facilities? 

Some standard industrial classification (SIC) code(s) applying to specific categories are given in parentheses to assist you in 

classifying yourfacility. The SIC codes provided are not meant to be an exhaustive list of facilities included in the category. 

. Coal Cleaning Plants-With Thermal Dryers Krafl Pulp Mills (261 1, 2621) 

Portland Cement Plants (3241) e Primary Zinc Smelters (3339) 

Iron and Steel Mills (3312) Primary Aluminum Ore Reduction Plants (3334) 

Primary Copper Smelters (3331) . Municipal Incinerators Capable of Charging More Than 

50 Tons of Refuse per Day 

Hydrofluoric Acid Plants (2819. 2899) . Sulfuric Acid Plants (2819) 

. Nitric Acid Plants (2873) . Petroleum Refineries (291 1) 

. Lime Plants (3274) . Phosphate Rock Processing Plants (1475) 

• Coke Oven Batteries (3312) . Sulfur Recovery Plants (2819) I 

Carbon Black Plants (Furnace Process, 2895) Primary Lead Smelters (3339) 

Fuel Conversion Plants . Sintering Plants* 

~ 

Secondary Metal Production Plants (334X) Chemical Process Plants (28~)" 

~ 

Fossil-Fuel Boilers (or combination thereof) Petroleum Storage &Transfer Units, Total Storage 

~ 

totaling more than 250 MMBtuIhr heat input Capacity over 300,000 Barrels 

Taconite Ore Processing Plants (1011) . Glass Fiber Processing Plants 

. Charcoal Production Plants (2819, 2861) Fossil Fuel-Fired Steam Electric Plants of more than 250 

MMBtuIhr heat input 

* Processing of fine grain materials info coaarerlurnps (performedpt?manly on ores). 

**Does not include ethanolproduction facilities that produce ethanol by natural fermentation included in NAlCS codes 

325193 or312140. 

Yes, my facility is classified as one of the 28 sources listed above. A listed air emission source having a potential to 

emit (PTE) 100 tons per year (TPY) or more of any single regulated pollutant (except carbon dioxide equivalents 

(C02e)) is considered a major stationary source. For sources classified as one of the 28 listed, fugitive emissions 

must be included in the PTE. For item 4 of this form, and for Form CH-04b if applicable, a 100-TPY emissions 

threshold must be used for all regulated pollutants except COze; for COze, the threshold is 100,000 TPY. 

IJ No, my facility is not classified as one of the 28 sources listed above. An air emission source not classified as one of the 28 

sources listed above and having the PTE 250 TPY or more of any single regulated pollutant (except CO2e) is considered a 

major stationary source. For item 4 of this form, and for Form CH-04b if applicable, a 250-TPY emissions threshold 

must be used for all regulated pollutants except C02e; for COze, the threshold is 100,000 TPY. 

4) Is your proposed change subject to regulation for greenhouse gas (GHG), as defined in 40 CFR 5 52.21(b)(49)? 

To answer this question, you must complete Form CH-04c. 

Yes. Go to question 5. 

No. Go to question 6 

5) Is the current federally enforceable PTE (including GHG) of your facility greater than or equal to the thresholds identified in 

question 3? 

Yes. Go to question 7 

[7 No. Go to question 9. 

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aq-f2-ch04 . 6/15/11 Page 1 of 2 
6) Is the current federally enforceable PTE (excluding GHG) of your facility greater than or equal to the thresholds identified in 

question 3, making your facility a major stationary source? 

IXI Yes. Go to question 7. 

[7 No. Go to question 9 

7) Is your facility currently covered by a permit that contains a Plantwide Applicability Limit ("actuals PAL") as defined at 40 

CFR § 52.21(aa)(Z)(i) and (v)? 

Yes. Go to question 8. 

No. Go to question 9. 

8) Are you able to continue to meet the emissions limits set by the Plantwide Applicability Limit after the project? 

Yes, hew So.ircc Revew is nor appl'cable to rhc proposed change11nod;f cdl'on. You nee0 not complete mc 

remainder of this form. You musr dclcrn1:ne if an amendment is necdcd ~nder M;nn R. 7007.1 150 - 7007 l5UO. 

No. You must complete a Best Available Control Technology (BACT) analysis for all maior and significant emissions 

un'ls at you so~rce. If inslallation of BACT sf'lf does not allow yo^ 1oinsr:~li tnc cniiss'on~nir arid manrain 

compliance w'rh your PAI., you may app y for an increase in your PA ... Please scc the M'nnesora Pol lion Control 

Agency fact sheet on PALS at hltp://ww~.~ca slate.mn uslndex.~hp/view-document.htm17qid=2097 

or Form PAi-05 fr~ol vct available 3s of lllc datc of 111i.s for171). fur 0~'dance on increasing a PAL 110 not complele tne .. - 

remainder of this'for;. 

9) Synthetic Minor Source: Are you proposing new or revised federally enforceable limits such that the entire facility 

(including the proposed modification) will become or remain a minor source? 

Yes. Submit an appllcal on for a ma;or amendment. Refcr to ~:llwww.pca.state.mn.us/z'hvd8c for guioancc on 

setting .'Inits Put proposed 'mils and proposed comp.iance demonsrration on Form CD-01. 30 not complete Forms 

No. If you answered "Yes" to question 5 or question 6, go to Form CH-04a 

If you answered "No" to question 5 or question 6, go to Form CH-04b. 

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oq-f2-ch04 - 6/15/11 Pase 2 of 2 
Minnesota Pollution 

Control Agency 

520 Lafayette Road North 

St. Paul, MN 55155-4194 

Determination of Increases at Major Sources 

Air Quality Permit Prosram 

Doc Type: Permit Application 

Instructions on page 5 

la) AQ Facility ID No.: 13700005 I b) AQ File No.: 

2) Facility Name: United States Steel Corporation-Minnesota Ore Operations, Minntac 

Use this Form to calculate emissions increases at existing major New Source Review (NSR) sources. If the facility is not a majo~ 

source under NSR, use Form CH-04b. 

3) Referto Question 4 on Form CH-04. Is the proposed change subject to regulation for greenhouse gas (GHG)? 

Yes - Include carbon dioxide equivalents (C02e) emissions when completing the tables on this form. 

IXI No - Do not include C02e when completing the tables on this form - Leave the C0ze entries blank, or enter "NA 

4) Modified, replacement, andlor debottlenecked emission units 

Use Table 1 to document the emissions increase for individual units, tanks, or fugitive sources using the calculation method 

found in 40 CFR 5 52.21(a). The procedure for calculating whether a significant emissions increase will occur depends on the 

type of emissions unit being modified. See instructions for calculating emissions increases. Complete a separate Table 1 for 

each modified, replacement, or debottlenecked emission unit. If you base your calculations on projected actual emissions 

(rather than future uotential emissions). include (in the suace urovided at the end of Table 1) the title and date of the business 

document on which you based your pkjections. jf you exclude emissions from your projected actual emissions, include (in 

the sDace urovided at the end of Table II a descriotion of the excluded emissions. includina an exulanation of whv these 

were'exclubed. Attach an additional sheet if necessary. Make additional copies if more than three ;nits are affected. 

Summarize the total increases for each pollutant in Table 2. Attach your calculations. 

Table 1 

Total Reduced Sulfur I I I 1 1 

Fluorides 

Sulfuric acid mist 

Hydrogen Sulfide (HzS) 

~4.86 

NIA 

NIA 

including H2S I NIA I NIA I I I 

Total Reduced Sulfur 

Compounds including HzS 

MWC Organics 

MWC Acid Gas 

MWC Metals 

" Titleldate of document(s) used as basis for projected actuals: This is an emission reduction project consisting only of the 

installation of hiaher removal efficiencv controls. No EU are 

4.86 

NIA 

NIA 

MSW Landfill Gas 

being modified, ;eplaced, or debottlenkcked. Only pollutants 

affected (reduced) by this change are included as applicable. 

'* Description of emissions excluded from projected actuals: 

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aq-12-ch04a . 6/15/11 Page I of 8 

NIA 

NIA 

NIA 

NIA 

0 

NIA 

NIA 

NIA 

NIA 

NIA 

12/31/2007 

NIA 

COZ~ {'I NIA NIA 
" Includes organic and inorganic condensable parflculale matter " C02e =carbon dioxide equivalents. This is the weighted sum of carbon dioxide, methane, nilrous oxides, sulfur hexafluoride, hydrofluorocarbons. 

and perfluorocarbons, based on each gases global warming polenfial. 

MWC Metals I I 1 I 

MSW Landfill Gas 

C02e 

*Titleldate of document(s) used as basis for projected actuals: 

** Description of emissions excluded from projecled actuals: 

Projected Actual* or Exclusions from 

Future Potential Baseline Actual 

MWC Organics 

MWC Acid Gas 

MWC Metals 

MSW Landfill Gas 

C02e 

* Titleldate of document(s) used as basis for projected actuals: 

** Description of emissions excluded from projected actuals: 

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aq-f2-ch04a . 6/15/11 Page 2 of 8 
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aq-f2-ch040 . 61 151 11 Page 3 of 8 
Pollutant 

PM 

PMio 

PM2.5 

NO, 

so2 

co 

Ozone (VOC) 

Lead 

Fluorides 

Sulfuric acid mist 

Hydrogen Sulfide (HzS) 

Total Reduced Sulfur 

including H2S 

Total Reduced Sulfur 

Compounds including HzS 

MWC Organics 

MWC Acid Gas 

MWC Metals 

MSW Landfill Gas 

C02e 

5) Installation or Construction of New Emission Units 

Table 2 - Summary of Table 1 Results 

Use this table to document the potential emissions (PTE) from each new emission unit, tank, or fugitive source. Copy this 

table if more than five units are added. Attach your calculations. 

Table 3 

Pollutant 

PM 

NIA 

NIA 

NIA 

PMio 

PM2.5 

NIA 

NIA 

NIA 

1 

NO, 

2 Total 

SO2 

co 

Ozone (VOC) 

PTE (tpyj 

Total Reduced Sulfur 

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aq-f2-ch04o . 6/15/11 Page 4 of 8 

WE) (~PY) (PTE) (tpy) (PTE) (tpy) PTE (tpy) (~PY) 
7) NSR Status of Proposed Modification 

6) Totals 

Table 4 - Project Summary 

replacement, or Potential Emissions 

Significant Thresholds 

Pollutant 

7a) Referring to Table 4, does the number in Column D exceed the threshold in Column E, for any pollutant? 

No. Done with this form. Attach all calculations and required documentation (as described within this form). 

IJ Yes. Go to question 7b. 

7b) In Table 5, list each pollutant for which the number in Column D of Table 4 exceeds the threshold in Column E of Table 4. 

For each of those pollutants, indicate whether or not you will propose and accept a limit such that the associated threshold in 

Column E is not exceeded. Refer to hltp:l/www.~ca.state.mn.uslzih~dBc for information on determining and proposing limits. 

MWC Organics 

MWC Acid Gas 

MWC Metals 

MSW Landfill Gas 

C02e 

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aq-f2-ch04a . 6/15/11 Page 5 of 8 

Note 1: July 31, 1987, the National Ambient Air Quality Standard for TSP (PM) was repealed and replaced with a standard for PMio. 

The significant levels in this table are as they appear in the Code of Federal Regulations, March 1994. A source may not be 

required to comply with Nonattainment NSR for TSP increases above 25 tpy, but may be for PMlo above 15 tpy. 

Note 2: MWC Organics means Municipal Waste Combustor Organics. These are defined as total tetra-thro-octa-chlorinated 

dibenzo-para-dioxins and dibenzofurans. 

Note 3: MWC acid gases are measured as the sum of sulfur dioxide and hydrochloric acid. 

Note 4: MWC Metals are measured as particulate matter 

0 

0 

0 

0 

0 

0 

0 

0 

0 

0 

0.0000035 

40 

15 

50 

75,000 
/ Yes. Describe the limit in item 7c. No. Complete Form CH-04d for this pollutant. 

1 rn Yes. Describe the limit in item 7c. [7 No. Complete Form CH-04d for this pollutant. 

Table 5 - Pollutant Status 

I Yes. Describe the limit in item 7c. No. Complete Form CH-04d for this pollutant. 

Pollutant exceeding the 

threshold (column e) in 

Table 4 

I Yes. Describe the limit in item 7c. No. Complete Form CH-04d for this pollutant. 

I Yes. Describe the limit in item 7c. No. Complete Form CH-04d for this pollutant. 

Are you proposing a limit such that the threshold in column e is not exceeded? 

7c) For each pollutant for which you are proposing a limit, briefly describe the limit@) you are proposing. Also include the limit($ 

on Form CD-01, with your proposed method of demonstrating compliance. 

Instructions for Form CH-04a 

Fill out Form CH-04 to determine your current status under New Source Review. If directed in CH-04, complete CH-04a. 

la) AQ Facility ID No. --Fill in your Air Quality (AQ) Facility Identification Number (ID) Number (No.). This is the first eight digits 

of the permit number for all permits issued under the operating permit program. 

Ib) AQ File No. -- Fill in your AQ File Number. This number can be found in the "cc" line of correspondence from the Minnesota 

Pollution Control Agency (MCPA). 

2) Facility Name -- Enter your facility name. 

3) Is the proposed change or modification subject to regulation for GHG? -You should have answered this question on 

Form CH-04, question 4. If you answered "yes," then fill out this form (CH-04a) for ail pollutants listed. If you answered "no," 

then the carbon dioxide equivalents (C02e) emissions requested on this form are not relevant. Enter "NA for C02e entries, or 

leave them blank. However, if the change is subject to regulation for GHG, and you do not fill in the C02e emissions, your 

application is not complete. 

4) Modified, Replacement, and/or Debottlenecked Emission Units 

Table 1 

Complete a separate Table 1 for each existing individual unit (which can include emissions units, tanks, or fugitive sources) 

affected by the project. At the top lefl of the table, enter or select "EU (emissions unit), "TK (tank), or "FS" (fugitive source) and 

enter the number as it exists in your current Part 70 permit (or Part 70 application if your Part 70 permit has not been issued). 

Indicate whether the unit is being modified, replaced, or debottlenecked (see descriptions below). 

Modifications at existing emissions units: The emissions increase is determined by calculating the difference between the 

projected actual emissions and the baseline actual emissions. "Projected actual emissions," defined at 40 CFR § 52.21(b)(41), 

means the maximum annual rate, in tons per year, at which an existing emission unit is projected to emit a regulated pollutant in 

any one of the five years (12-month period) following the date the unit resumes regular operation after the project. If the project 

increases the emission unit's design capacity or potential to emit, and the potential to emit the regulated pollutant at full utilization 

of the unit would result in a significant emissions increase or net emissions increase, then the projected actual emissions are the 

maximum annual rate at which the existing emission unit is projected to emit a regulated pollutant in any one of ten years following 

the date the unit resumes regular operation. Projected actual emissions include fugitive emissions to the extent they are 

quantifiable, and emissions associated with startup, shutdown, and malfunction. DO not take air pollution control e&ipment into 

account except as allowed by Minn. R. 7007.1200, subp. 2. You may not take credit for proposed or non-federally-enforceable 

pollution control equipment. 

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aq-f2-chO4a . 6/15/11 Page 6 of 8 
U. S. Steel - Minntac 

Line 6 Waste Gas Baseline Determination 

TPV 

SOX PMlO VOC PM F 

Baseline Dates 

2006 455.4 329.3 22.8 248.0 2007 4.80 

2005 466.8 337.6 23.3 254.2 2006 4.92 

Average 461.1 333.5 23.0 251.1 4.86 

Data from annual air emissions inventory with the exception of fluoride which 

was determined from the highest stack test during same baseline period. 
@$ Minnesota Pollution 

Control Agency 

520 Lafayette Road North 

St. Paul, MN 55155-4194 

Determination of Greenhouse Gas 

Status under New Source Review 

Air Quality Permit Program 

Doc Type: Permit Application 

Instructions on page 5 

la) AQ Facility ID No.: 13700005 I b) AQ File No.: - 

2) Facility Name: United States Steel Corporation- Minnesota Ore Operations, Minntac 

3) Calculate the potential to emit (PTE) of greenhouse gases (GHG) emissions for your existing facility, before your proposed 

change, including the mass emissions of individual GHGs (columns a - 9, the sum of the mass emissions of individual GHGs 

(column g), and the carbon dioxide equivalent (C02e, column h). See Form EC-I7 for guidance in calculating the individual 

mass emissions and the C02e. Complete your calculations on a spreadsheet; transfer the current PTE to Table 1 below, and 

include the calculation spreadsheet in your application package. 

Table 1 

H Yes. Go to question 5. 

No. Go to question 6. 

- a) 

Carbon 

Dioxide 

((332) 

(tPY) 

2,256,312 17.76 4.03 0 0 0 

5) Is the mass sum of the individual GHGs (column g) greater than either 100 tpy (if you answered "yes" to question 3 on Form 

CH-04), or 250 tpy (if you answered "no" to question 3 on Form CH-04)? 

Yes. Go to question 8. Do not answer questions 6 or 7 or complete Tables 2 or 3. 

No. Go to question 6. 

4) Is the number you entered for C02e greater than 100,000 tpy? 

9) 

Mass Sum of 

GHGs 

(~PY) 

2,254,701 

6) Use Table 2 to document the emissions increase for individual units, tanks, or fugitive sources affected by the proposed 

modification. See instructions for calculating emissions increases. Make additional copies of Table 2 if more than four units are 

affected. Summarize the total increases for each pollutant in Table 3. Attach your calculations (both in an editable spreadsheet 

format, and a hard copy printout). Answer the question following Table 3. 

h) 

Carbon 

Dioxide 

Equivalent 

(COze) 

(tPYL 

2,256,312 

Table 2 

PFC 

SF6 

C0~e 

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aq-f2-chO4c . 61 151 11 Page f of 7 

Total 

(tpy) 

Potential 

Pollutant emissions (tp] 

c02 

CH4 

N20 

HFC 

Potential 

emissions (tpy) 

Potential 

-- emissions (tpy) 

Potential 

emissions (tpy) 
Exclusions from 

Baseline Actua 

*Title/date of document(s) used as basis for projected actuals: This project is replacing pollution control equipment and GHG 

emissions are not affected . There are no EUs being modified. 

replaced, or debottlenecked. 

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nn-n-rh~r . h1151 11 Pase 2 of 7 

Table 3 -Summary 

Pollutant 

C02 

CH4 

N20 

HFC 

PFC 

S F6 

Total Mass GHG (sum of above 6 numbers) 

Potential Emissions 

("Total" from Table 2) 

(tPY) 

Thresholds making your change Subject 

to Regulation (tpy) 

Answered "Yes" to 

CH-04 question 3 

Answered "No" to 

CH-04 question 3 

C02e 100,000 

Is the number you entered for C02e in Table 3 greater than or equal to 100.000 tpy? 

Yes. Go to question 7. 

No. Your proposed change is not Subject to Regulation for GHG under New Source Review. You are done with 

this form. Return to Form CH-04 and answer "No" to question 4. 

7) Are the total mass emissions (sum of the masses of the individual GHGs, excluding global warming potentials) greater than 

or equal to the applicable threshold, shown in the two columns on the right? 

Yes. Your proposed change is Subject to Regulation for GHG under New Source Review. You are done with this 

form. Return to Form CH-04 and answer "Yes" to question 4. 

No. Your proposed change is not Subject to Regulation for GHG under New Source Review. You are done with 

this form. Return to Form CH-04 and answer "No" to question 4. 

8) Use Table 4 to document the emissions increase for individual units, tanks, or fugitive sources being modified or 

debottlenecked, or that are replacing an existing unit, using the calculation method found in 40 CFR 5 52.21(a). See 

instructions for calculating emissions increases; the method is different depending on the type of unit. Complete a separate 

Table 4 for each modified, replacement, or debottlenecked emission unit. if you base your calculations on projected actual 

emissions (rather than future potential emissions), include (in the space provided at the end of Table 4) the tille and date of 

the business document on which you based your projections. If you exclude emissions from your projected actual emissions. 

include (in the space provided at the end of Table 1) a description of the excluded emissions, including an explanation of Why 

these were excluded. Attach an additional sheet if necessary. Make additional copies if more than three units are affected. 

Summarize the total increases for each pollutant in Table 5. Attach your calculations. 

Table 4 

100,000 

N A 

N A 

N A 

pppp 

NA 

N A 

N A 

100 

N A 

N A 

NA 

N A 

N A 

N A 

250 
** Description of emissions excluded from projected actuals: 

Table 4 

CH4 

NzO 

HFC 

PFC 

Modified Replacement Debottlenecked 

Table 4 

C02e 

Pollutant 

Increase 

(~PY) 

Exclusions from 

Projected 

Actuals (tpy) 

I I 

coz 

CH4 

N20 

HFC 

PFC 

Baseline period 

(dates) 

Baseline Actual 

Emissions (tpy) 

Pollutant 

*Titleidate 

** Description 

of document(s) used 

of emissions excluded 

as basis 

from projected 

for projected 

actuals: 

actuals: - 

Modified 

Actual* or 

Future 

Potential 

Projected 

Actual' or 

Future 

Potential 

Emissions (tpy) 

Replacement Debottlenecked 

Baseline Actual Exclusions from Increase Baseline period 

Emissions (tpy) Projected (dates) 

Actuals (tpy) (tPY) 

C02e 

* Titleldate of document(s) used as basis for projected actuals: 

** Description of emissions excluded from projected actuals: 

Pollutant 

CH4 

N20 

HFC 

PFC 

SF6 

EU 313 

lncrease 

(tPY) 

able 5 - Summ: 

EU 314 

Increase (tpy) 

0 

0 

0 

0 

0 

0 

y of Table 4 Res 

EU 315 

lncrease (tpy) 

Total 

Increase Increase Increase . (~PY) (tPY) 

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oq-f2-ch04c . 6/15/11 Pose 3 of 7 
9) Use Table 6 to document the potential emissions of each new emission unit constructed or installed. Copy this table if more 

than five units are added. Atlach your calculations. 

Table 6 

10) Project Totals 

Table 7 - Project Summary 

Column A Column E 

Pollutant 

C02 

CH4 

Significant 

Thresholds for major 

sources 

(~PY) 

Column B 

Emissions increases 

from modified, 

replacement, or 

debottlenecked units 

(from Table 5) 

(tPL 

0 

0 

11) Is the total increase of Cole (Column D of Table 7) greater than or equal to 75,000 tpy? 

HFC 

PFC 

SF6 

C02e 

Yes. Your proposed change is Subject to Regulation for GHG under New Source Review. You are done with this 

form. Return to Form CH-04 and answer "Yes" to question 4. 

Column C 

Emissions from new 

units (from Table 6) 

(~PY) 

No. Your proposed change is not Subject to Regulation for GHG under New Source Review. You are done with 

this form. Return to Form CH-04 and answer "No" to question 4. 

Column D 

Total Increase (tpy) 

0 

0 

0 

0 

0 

0 

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aq-f2-chO4c . 61151 11 Pase 4 of 7 

0 

0 

0 

0 

0 

- 

0 

0 

75,000 
Minnesota Pollution 

Control Agency 

520 Lafayette Road North 

St. Paul, MN55155-4194 

Applicability of NSPS 

Air Quality Permit Program 

Doc Type: Permit Application 

Instructions on Page 3 

Complete this form to determine if the proposed change or modification results in new applicability of a New Source Performance 

Standard listed in Table 1. 

la) AQ Facility ID No.: 13700005 I b) AQ File No.: 

2) Facility Name: United States Steel Corporation-Minnesota Ore Operations, Minntac 

3) Is there a New Source Performance Standards (NSPS) for a source category which includes the unit@) you are installing. 

modifying, or reconstructing? 

Yes. Go to question 4 

[X1 No. Done with this Form. Answer "No" to question 3b) on Form CH-03. 

4) Complete Question 4a) -4c) for each new, modified, or reconstructed unit which may be subject to an NSPS following the 

proposed project. (Copy as necessary.) 

5) Did you check "no" in column 4c) for any unit in the table in question 4)? 

4a) 

Unit 

No. This indicates that NSPS currently applies to all units and there will be no newly applicable NSPS as a result of the 

proposed project. Done with this form. Answer "no" to question 3b on Form CH-03. 

Yes. Complete the remainder of this form for each unit for which you checked "no" in the last column of the table in 

question 4. 

6) Installing a new unit to which the NSPS will apply? 

No. Go to Question 7). 

4b) 

NSPS Subpart(s) that may 

apply afler project 

Yes - Complete Questions 6a) - 6e) for each new unit. (Copy as necessary.) 

6a) Emission Unit Number: 

6b) Emission UnitlEquipment Description: 

6c) Stackwent Number: 

6d) Date of Equipment Manufacture or Installation: (MonthlDateNear) 

6e) Attach a copy of the applicable 40 CFR pt. 60 subpart, and subpart A, with the applicable sections highlighted. Use 

Form CD-01 to document the proposed methods of compliance. 

7) Reconstructing an existing unit to which an NSPS will apply? 

No. Go to Question 8). 

Yes - Complete Questions 7a) - 7e) (next page) for each reconstructed unit. (Copy as necessary.) 

4c) 

Do all of the NSPS listed in column 4b) for the unit listed in column 4a) currently 

apply (p,~ect)? If this is a new unit, the answer is "no." 

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oq-f2-chO5 . 10/22/10 Page 1 of 5 

Yes - done with this unit 

pp 

Yes - done with this unit 

!l Yes - done with this unit 

Yes - done with this unit 

Yes - done with this unit 

No 

No 

NO 

NO 

No 
7a) Emission Unit Number: 

7b) Emission UnitlEquipment Description: 

7c) StackNent Number: 

7d) Date of Reconstruction (expected): (MonthlDateNear) 

7e) Attach a copy of the applicable 40 CFR pt. 60 subpart, and subpart A, with the applicable sections highlighted. Use 

Form CD-01 to document the proposed methods of compliance. 

8) Physical change or modification to an existing unit to which the NSPS might apply? 

No. Go to Question 10). 

Yes - Complete Question 8a) for each modified unit. (Copy as necessary.) 

NOx I 

8a) Emission Unit ID No.: 

voc 

El Lead 

9) Is there an increase in the hourly emission rate of any of the pollutants regulated by the NSPS? 

No. Go to Question 10). 

Yes - Complete Questions 9a) - 9d) for each modified unit. (Copy as necessary.) 

Pollulant(s) regulated by Change in Emission Rate 

9b) Emission UnitlEquipment Description 

9b) StacWent Number 

9c) Date of Modification (expected) (MonthlDateNear) 

9d) Attach a copy of the applicable 40 CFR pt. 60 subpart, and subpart A, with the applicable sections highlighted. Use 

Form CD-01 to document the proposed methods of compliance. 

10) Check ail that apply 

If you answered either "yes" or "no" to question 6) and "no" to question 7) and "no" to question 8) or question 9), a 

major amendment is not needed under Minn. R. 7007.1500, subp. 3a. Answer "no" to Question 3b) on Form CH-03. 

Another type of permit amendment may still be required. 

If you answered "yes" or "no" to question 6), and either "yes" to question 7) or "yes" to questions 8) and 9), this change 

or modification requires a major amendment under Minn. R. 7007.1500, subp. 3a. Answer "yes" to Question 3b) on 

Form CH-03. 

if you answered "yes" to question 6). 7), or 9), but the total facility potential-to-emit remains below all permit 

thresholds, review Minn. R. 7007.0250 - 7007.0300 to determine if a permit is needed. 

the NSPS 

PM 

I7 PMl0 

a PMzs 

Emission Rate after 

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oqf2-ch05 10122110 Page 2 of 5 

--- 

change (Iblhr) (Iblhr) 

Emission Rate before change 
~innesota 

Pollution 

AIR QUALITY PERMIT CHANGE FORM CH-06 

520 LAFAYETTE ROAD APPLICABILITY OF PART 61 NESHAP 

ST. PAUL, MN 55 155-4 194 (FORMERLY MOD-06 APPLICABILITY OP PART 61 NESHAP) 

0313 1104 Control 

Agency 

Complete this form to determine if the proposed change or modification results in new 

applicability of a Part 61 NESHAP listed in Table 1. 

la) AQ Facility ID No.: 13700005 

1 b) AQ File No. 

2) Facility Name.: United States Steel Corporation-Minnesota Ore Operations, Minntac 

3) Is there a Pat 61 NESHAP for a source category which includes the unit(s) you are installing, 

modifying, or reconstructing? 

Yes. Go to question 4 

No. Done with this Form. Answer "No" to questioi~ 3c) on Fosm CH-03. 

4) Complete Question 4a) - 4c) for each new, modified, or reconstructed unit which may be subject to 

a Part 61 NESHAP following the proposed project. (Copy as necessaiy.) 

5) Did you check "no" in column 4c) for unit in the table in question 4)? 

No. This indicates that NESHAP c~irrently applies to all units and there will be no newly applicable 

NESHAPs as aresult of the proposed project. Done with this form. Answer "no" to question 3c on 

Form CI-1-03, 

4a) 

Unit 

- 

Yes. Complete the remainder of this form for each unit for which you checked "no" in the last 

column of the table in quiestion 4. 

4b) 

Part 61 Su~hpart(s) 

that may apply after 

project 

4c) 

Do all of tlie NESHAPs listed in column 4b) for the unit listed in 

column 4a) currently apply (prior to the proposed project)? If this is a 

new unit, the answer is "no." 

6) Installing new equipment which will cause a Part 61 NESHAP to apply? 

I 

Yes -done with this unit 

n Yes - done with this unit 

Yes - done with this unit 

C] Yes - done with this unit 

Yes - done with this unit 

No - Go to question 7). 

NO 

7 

ONO 

No 

NO 

~ 

Yes - Complete 6a) - 6c) for each new unit. (Copy as necessa~y.) Use Form CD-01 to document 

6a) Emission Unit Number 

6b) Emission Unit/Equipment Description 

I 6c) StackNent Number 

Form CH-06 

Page 1 of 5 
7) Physical or operational change to an existing unit such that a Part 61 NESHAP will apply? 

No. Go to question 9). 

8) Is there an increase in the emission rate of any of the pollutants regulated by the Part 61 NESHAP? 

No. Go to question 9). 

Yes - Complete questions 8a) - 8c) for each modified unit. (Copy as necessary.) Use Form CD-01 to 

doci~ment the proposed methods of complia~~ce. Include a highlighted photocopy of the standard. 

8a) Emission UnitIEquipment Description 

8b) StacldVent Number - 

Sc) Date of Modification (expected) (MonthIDateNear) 

17 Yes - Coinplete 7a) for each modified unit. (Copy as necessaiy.) Then go to question 8). r 

7a) Emission Unit ID No.: 

9) Check all that apply 

Polli~tant 

If you aiswered "yes" or 'how to question 6) and "no" to question 7) or 8), a major amendment is 

not needed under Minn. R. 7007.1500, subp. 1.D. Answer "no" to Question 3c) on Form CH-03. 

Another type of permit amendment may be required. 

17 If yon answered "yes" or "no" to question 6) and "yes" to question 8), this change or modification 

requires amajor amendment under Minn. R. 7007.1500, subp. 1.D. Answer "yes" to Question 3c) 

on Fonn CH-03. 

Emission Rate after 

change (Iblhr) 

If you answered "yes" to question 6) or 8), but the total facility potential-to-emit remains below 

all permit thresholds, you are required to obtain a permit only for the emission unit(s) subject to 

the Part 61 NESHAP. 

E~nission Rate before 

change (Iblhr) 

Fonn CH-06 

Page 2 of 5 

Change in Emission Rate 

(Iblhr) 
Minnesota Pollution 

Control Agency 

520 Lafayette Road North 

St. Paul, MN 55155-4194 

Applicability of Part 63 NESHAP for Amendments 

Air Quality Permit Program 

Doc Type: Permit Application 

AQ Facility ID No.: 13700005 

AQ File No.: 

Facility Name: United States Steel Corporation-Minnesota Ore Operations. Minntac 

1) Are there or will there be Hazardous Air Pollutants (HAPs) emissions (listed on Table A) from any source affected by the 

proposed project? 

No. Done with this form. Answer "No" to Question 3d on Form CH-03. 

Yes. Go on to Question 2 of this form. 

2) Are you proposing to install new HAP-emitting sources, or reconstruct existing equipment that will emit HAPs following the 

reconstruction? (This specifically means "reconstruction" as defined at 40 CFR 5 63.2 -if you modify existing equipment 

without meeting the definition of "reconstruction," the answer to this question is "No.") 

No. Done with this form. Answer "No" to Question 3d on Form CH-03. 

Yes. Go on to Question 3 of this form. 

3) Is the currently-permitted facility a major HAP source (considering potential emissions and all existing federally 

enforceable permit conditions)? 

No. Go on to Question 4. 

Yes. Go to Question 7. 

4) Will the new or reconstructed items have the potential to emit 10 or more tons per year of any individual HAP, or 25 or 

more tons per year of total HAPs, before considering any limits the source may be subject to or limits you may propose 

later in this form? 

No. Go on to Question 5. 

Yes. Go to Question 6. 

5) Will the facility as modified be a major source of HAP emissions after your proposed change, before considering any 

limiting conditions you may propose later in this form? 

No. Go to Question 10. 

Yes. Go on to Question 6 

6) It is possible to avoid becoming a major HAP source by proposing federally enforceable permit conditions to limit your 

potential HAP emissions from the entire facility (as modified) to less than 10 tons per year for each HAP and/or 25 tons 

per year for all HAPs combined. Do you want to accept permit limitations on HAPS to avoid becoming a major HAP 

source? 

No. Go on to question 7. 

rn Yes. Briefly describe the limitations you would be willing to accept so that your HAP emissions will be less than 10 

tons per year for each HAP and less than 25 tons per year for all HAPs combined (use a separate sheet if 

needed). Description must include each of the HAP pollutants. Include your proposed limit, monitoring. 

recordkeeping, and reporting on Form CD-01. You must answer "Yes" to Question 6 on Form CH-03. 

Then go to Question 10 of this form. 

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ag-f2-ch07 . 1111 9110 Pose I of 9 
7) Will any of the new or reconstructed items be subject to any of the standards for major source categories listed in 

Table B? Also consider whether any existing, non-modified parts of the facility are subject to one or more of the standards 

listed in Table 8; if so, and the standard is not already included in your existing permit, include those sources and 

standards here as well. 

q No. Go on to Question 8. 

Yes. List the source categories applicable to each new, reconstructed, or existing HAP-emitling equipment. 

8) Will the new or reconstructed source have the potential to emit 10 or more tons per year of any individual HAP, or 25 or 

more tons per year of total HAPS, before considering any limits the source may be subject to? 

No. Done with this form. Answer "No" to Question 3d on Form CH-03. 

q Yes. Go on to Question 9 of this form. Answer "Yes" to Question 3d on Form CH-03. 

9) Will any of the new or reconstructed items not be subject to any of the standards for major source categories listed in 

Table B? 

q No. Done with this form. 

q Yes. List them here. Done with this form. 

Source 

HAP-emitting units with no applicable source category in Table 6. 

For each standard listed above, attach a copy of the National Emission Standards for Hazardous Air Pollutant 

(NESHAP) standard with the applicable parts highlighted. If the applicable standard offers more than one 

compliance option, make it clear which one you are choosing. 

Go on to Question 8. 

(N)ew, (R)econstructed, or Applicable Source Category (Subpart or Title) 

(E)xisting? (Check one) 

ON OR OE 

ON OR UE 

UN UR OE 

ON OR UE 

For those HAP-emitting units listed above, you must propose a case-by-case MACT determination meeting the 

requirements of 40 CFR 5 63.43. Contact the Minnesota Pollution Control Agency (MPCA) for information about proposing 

a case-by-case MACT determination for approval. 

Compliance 

Date 

I 

10) Some non-major HAP sources will be subject to requirements of NESHAPs called "area source" NESHAPs. Will the 

proposed new or reconstructed units belong to any of the area source categories listed below? 

- No. Done with this form. Answer "No" to Question 3d on Form CH-03. 

Yes Place a check in the box nexl to rnal calegory, and read tne spedfiea NESHAP for So-rce Categories to 

determine all a~olicablo rea~ircmenls for area so.lrces Altacn a CODY of each apulicable subpan of the 

NESIiAP for area source calegor'es, atid highlight the applicable riqiirements each appliwble s~bparl. 

Done w'lh this form. Answer No" to Question 3d on Form Cd-03. 

q Acrylic and Modacrylic Fibers Production, 40 CFR 5 63 Subpart LLLLLL 

q Aluminum, Copper, and Other Nonferrous Foundries, 40 CFR 5 63 Subpart ZZZZZZ 

Asphalt Processing and Asphalt Roofing Manufacturing, 40 CFR § 63 Subpart AAAAAAA 

q Carbon Black Production, 40 CFR § 63 Subpart MMMMMM 

q Chemical Manufacturing Area Sources. 40 CFR 5 63 Subpart VVVVW 

q Chemical Manufacturing: Chromium Compounds, 40 CFR 5 63 Subpart NNNNNN 

Chemical Preparations Industry. 40 CFR § 63 Subpart BBBBBBB 

Chromic acid anodizing (Chromium Electroplating). 40 CFR 5 63 Subpart N 

(7 Clay Ceramics Manufacturing. 40 CFR 5 63 Subpart RRRRRR 

Commercial dry cleaning (Perc) transfer machines, 40 CFR 5 63 Subpart M 

Commercial sterilization facilities, 40 CFR 5 63 Subpart 0 

q Decorative chromium electroplating (Chromium Electroplating). 40 CFR 5 63 Subpart N 

q Electric Arc Furnace Steelmaking Facilities. 40 CFR 5 63 Subpart YYYYY 

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aq-f2-ch07 . 11/19/10 Page 2 of 9 
Ferroalloys Production Facilities, 40 CFR 5 63 SubpartYYYYW 

Flexible Polyurethane Foam Production and Fabrication, 40 CFR 5 63 Subpart 000000 

Gasoline Dispensing Facilities, 40 CFR 5 63 Subpart CCCCCC 

[7 Gasoline Distribution Bulk Terminals. Bulk Plants, and Pipeline Facilities. 40 CFR 5 63 Subpart BBBBBB 

Glass Manufacturing, 40 CFR 5 63 Subpart SSSSSS 

Halogenated solvent cleaners (Degreasing Organic Cleaners), 40 CFR 5 63 Subpart T 

Hard chromium electroplating (Chromium Electroplating). 40 CFR § 63 Subpart N 

Hospital Sterilizers using Ethylene Oxides, 40 CFR 5 63 Subpart WWWWW 

Iron and Steel Foundries Area Sources. 40 CFR § 63 Subpart ZZZZZ 

[7 Lead Acid Battery Manufacturing. 40 CFR § 63 Subpart PPPPPP 

Metal Fabrication and Finishing Sources, 40 CFR 5 63 Subpart XXXXXX 

17 Oil and natural gas production. 40 CFR 5 63 Subpart HH 

[7 Paint Stripping and Miscellaneous Surface Coating Operations at Area Sources. 40 CFR § 63 Subpart HHHHHH 

Paints and Allied Products Manufacturing, 40 CFR 5 63 Subpart CCCCCCC 

17 Plating and Polishing Operations. 40 CFR 5 63 Subpart WWWW 

Polyvinyl Chloride and Copolymers Production, 40 CFR 5 63 Subpart DDDDDD 

17 Prepared Feeds Manufacturing, 40 CFR 5 63 Subpart DDDDDDD 

Primary Copper Smelting, 40 CFR 5 63 Subpart EEEEEE 

[7 Primary Nonferrous Metals: Zinc, Cadmium, and Beryllium, 40 CFR 63 Subpart GGGGGG 

Reciprocating Internal Combustion Engines. 40 CFR 5 63 Subpart ZZZZ 

Secondary aluminum processing. 40 CFR 5 63 Subpart RRR 

Secondary Copper Smelting, 40 CFR 5 63 Subpart FFFFFF 

Secondary Nonferrous Metals Processing, 40 CFR 5 63 Subpart TTTT 

Wood Preselving, 40 CFR 5 63 Subpart QQQQQQ 

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oq-f2-chO7 . 11119/fO Paye 3 of 9 
Table A. Hazardous Air Pollutants 

Acetaldehyde 

Acetamide 

Acetonitrile 

Acetophenone 

2-Acetylaminofluorene 

Acrolein 

Acrylamide 

Acrylic acid 

Acrylonitrile 

Allyl chloride 

4-Aminobiphenyl 

Aniline 

o-Anisidine 

Asbestos 

Benzene 

Benzidine 

Benzotrichloride 

Benzyl chloride 

Biphenyl 

Bis (2-ethylhexyl) phthalate (DEHP) 

Bis (chloromethyl) ether 

Bromoform 

1,3-Butadiene 

Calcium cyanamide 

Captan 

Carbaryl 

Carbon disulfide 

Carbon tetrachloride 

Carbonyl sulfide 

Catechol 

Chloramben 

Chlordane 

Chlorine 

Chloroacetic acid 

2-Chloroacetophenone 

Chlorobenzene 

Chlorobenzilate 

Chloroform 

Chloromethyl methyl ether 

Chloroprene 

Cresols/Cresylic acid (isomers and mixture) 

0-Cresol 

m-Cresol 

p-Cresol 

Cumene 

2,4-D, salts and esters 

DDE 

Diazomethane 

Dibenzofurans 

1,2-Dibromo-3-chloropropane 

Dibutylphthalate 

1,4-Dichlorobenzene(p) 

3,3-Dichlorobenzidene 

Dichloroethyl ether (Bis(2-ch1oroethyi)either) 

I ,3-Dichloropropene 

Dichlorvos 

Diethanoiamine 

N,N-Diethyl aniline (N.N- Dimethylaniline) 

Diethyl sulfate 

3,3-Dimethoxybenzidine 

Dimethyl aminoazobenzene 

3.3-Dimethyl benzidine 

Dimethyl carbamoyl chloride 

Dimethyl formamide 

1 ,I Dimethyl hydrazine 

Dimethyl phthalate 

Dimethyl Sulfate 

4.6-Dintro-o-cresol, and salts 

2,4-Dinitrophenol 

2.4-Dinitrotoluene 

1 ,4-Dioxane (1.4-Diethyleneoxide) 

1,2-Diphenylhydrazine 

Epichlorohydin (I-Chloro-2.3-epoxypropane) 

I ,z-~poxybutane 

Ethyl acrylate 

Ethyl benzene 

Ethyl carbamate (Urethane) 

Ethyl chloride (Chloroethane) 

Ethylene dibromide (Dibromoethane) 

Ethylene dichloride (1,2- Dichloroethane) 

Ethylene glycol 

Ethylene imine (Aziridine) 

Ethylene oxide 

Ethylene thiourea 

Ethylidene dichloride (1.1-Dichloroethane) 

Formaldehyde 

Heptacholor 

Hexachlorobenzene 

Hexachiorobutadiene 

Hexachlorocyclopentadiene 

Hexachloroethane 

Hexamethylene-I .6-diisocyanate 

Hexamethylphosphoramide 

Hexane 

Hydrazine 

Hydrochloric acid 

Hydrogen fiouride (hydrofluoric acid) 

Hydroquinone 

lsophorone 

Lindane (all isomers) 

Maleic anhydride 

Methanol 

Methozychlor 

Methyl bromide (Bromomethane) 

Methyl chloride (Choromethane) 

Methyl chloroform (1 ,I .I-Trichloroethane) 

Methyl hydrazine 

Methyl iodide (lodomethane) 

Methyl isobutyl ketone (Hexone) 

Methyl isocyanate 

Methyl methacrylate 

Methyl tert butyl ether 

4,CMethylene bis (2-chloroaniline) 

Methylene chloride (Dichloromethane) 

Methlene diphenyl diisocyanate (MDI) 

4,4'-methylenedianiline 

Naphthalene 

Nitrobenzene 

4-Nitrobiphenyl 

4-Nitrophenol 

2-Nitro~rooane 

tate.mn.us . 651-296-6300 . 800-657-3864 . TTY 651-282-5332 or 800-657-3864 Available in alternative f 

11/19/10 Page 
Table A. Hazardous Air Pollutants 

Parathion 

Pentachloronitrobenzene (Quintobenzene) 

Pentachlorophenol 

Phenol 

p-Phenylenediamine 

Phosgene 

Phosphine 

Phosphorus 

Phthalic anhydride 

Polychlorinated biphenyls (aroclors) 

1,3-Propane sultone 

beta-Propiolactone 

Propionaldehyde 

Propoxur (Baygon) 

Propylene dichloride (1.2-Dichloropropane) 

Propylene oxide 

1,2-Propylenimine (2-Methyl aziridine) 

Quinoline 

Quinone 

Styrene 

Styrene Oxide 

2,3,7,8-Tetrachlorodibenzo-p-dioxin 

1 ,I .2,2-Tetrachloroene 

Tetrachloroethylene (Perchloroethylene) 

Titanium tetrachloride 

Toluene 

2,4-Toluene diamine 

2,4-Toluene diisocyanate 

o-Toluidine 

Toxaphene (chlorinated camphene) 

1.2.4-Trichlorobenzene 

1 ,I ,2-Trichloroethane 

Trichloroethvlene 

121448 ~rieth~lamine ' 

1582098 Trifluralin 

540841 2,2,4-Trimethylpentane 

108054 Vinyl acetate 

593602 Vinyl bromide 

75014 Vinyl chloride 

75354 Vinylidene chloride (1,l-Dichloroethylene) 

1330207 Xylenes (isomers and mixtures) 

95476 o-Xylenes 

108383 m-Xylenes 

106423 p-Xylenes 

Antimony compounds 

Arsenic compounds (inorganic including arsine) 

Beryllium compounds 

Cadmium compounds 

Chromium compounds 

Cobalt compounds 

Coke oven emissions 

Cyanide compounds 

Glycol elhers ' 

Lead compounds 

Manganese compounds 

Mercury compounds 

Mineral fibers 

Nickel compounds 

Polycyclic orga2ic matter 

Radionuclides 

Selenium compounds 

Note: For all listinas above which contain the word 

."compounds" and-for glycol ethers, lne followng applies: 

Unless othe~l'se suecifieu. lhcse listinas arc defined as 

including any unique chem/cal substance that contains the 

named chemical (1.e.. antimony, arsenic, etc.) as part of that 

chemical's infrastructure. 

1 Glycol ethers include mono- and di- ethers of ethylene glycol, 

diethylene glycol, and triethylene glycol R-(OCHzCHz),-OR' 

where 

n=1,2,or3 

R = alkyl C7 or less; or 

R = phenyl or alkyl substituted phenyl; 

I? = H or alkyl C7 or less; or 

OR' consisting of carboxylic acid ester, sulfate. 

phosphate, nitrate, or sulfonate. 

Glycol ethers do no include ethylene glycol monobutyl ether 

(EGBE, 2-Butoxyethanol. CAS Number 111-76-2). 

2 Includes mineral fiber emissions from facilities manufacturing 

glass, rock, or slag fibers (or other mineral derived fibers) of 

average diameter 1 micron or less. 

3 Includes organic compounds with more than one benzene 

ring, and which have a boiling point greater than or equal to 

100°C. 

A type of atom which spontaneously undergoes radioactive 

decay. 

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aq-f2-ch07 . 111191 10 Pose 5 of 9 
Table B. Source Categories 

(current as of date of form - see htt~://~.e~a.a~~/Hn/~atw/f~r most current Status) 

Processes (MON)) 1 

Acrylonitrile-butadiene-styrene production (Polymers and Resins IV) 

Compliance Date 

for Existing 

Sources 

(if applicable) 

6/29/02 

6/29/02 

Categories of Major Sources 

Acetyl resins production (Generic MACT) 

Acrylic fiberslmodacrylic fibers production (Generic MACT) 

JJJ 

Amino resins production(Polymers and Resins Ill) 

Ammonium sulfate production (MON) 

Asphaltlcoal tar application - metal pipes 

Asphalt Roofing and Processing 

Auto and Light Duty Truck Surface Coating 

Subpart 

W 

YY 

Benzyltrimethylammonium chloride production (MON) 

Boat manufacturing 

Brick and Structural Clay Products Manufacturing 

Butadiene-furfural cotrimer (R-I I) production (Pesticide Active 

Rule Promulgation 

Date or Scheduled 

Promulgation Date 

6/29/99 

6/29/99 

911 2/96 

Aerospace Industry 

000 

FFFF 

MMMM 

LLLLL 

1111 

. . 

lngredient Production) 

7/31/97 

Alkvd resins oroduction IMisc. Oraanic Chemical Production and I FFFF I 11/1 0103 1 11 /I 0106 

GG 9/1/95 

FFFF 

VWV 

JJJJJ 

MMM 

Butyl rubber production (Polymers and Resins I) 

Captafol production (Pesticide Active Ingredient Production) 

Captan production (Pesticide Active Ingredient Production) 

Carbon Black Production (Generic MACT) 

Carboxymethylcellulose production 

9/1/98 

1/20/00 

1 111 0103 

01/02/04 

4/29/03 

4/26/04 

(Cellulose Production Manufacturing) 

1/20/03 

11/10/06 

01 /02/07 

5/1/06 

4/26/07 

11/10/03 

8/22/01 

511 6/03 

6/23/99 

I I I 

MMM 

MMM 

W 

UUUU 

Carbonyl sulfide production (MON) 

(Cellulose Production Manufacturing) 

Cellulose ethers production 

(Cellulose Production Manufacturing) 

Cellulose food casing manufacturing 

(Cellulose Production Manufacturing) 

Clay Ceramics Manufaacturing 

11/10/06 

8/22/04 

511 6/06 

12/23/03 

U 3/5/97 

Chelating agents production (MON) 

Chlorinated paraffins production (MON) 

4-chloro-2-methyl acid production (Pesticide Active Ingredient 

9/5/96 

6/23/99 

6/23/99 

7/12/02 

611 1/02 

Cellowhane oroduction I UUUU I 611 1 102 I 611 1/05 

FFFF 

UUUU 

UUUU 

KKKKK 

Production) 

Chloroneb production (Pesticide Active Ingredient Production) 

Chlorothalonil production (Pesticide Active Ingredient Production) 

Chromic acid anodizing (Chromium Electroplating) 

Coke Ovens: Charging. Top Side, and Door Leaks 

. . - . -- - . . - . -. . . . . I - 1 Dac&l 7U proo~clion (Pest c~deAc~v~Ingredienl Produclion) . MMM 6/23/99 1 12/23/03- 

Desm've chromi~ni electrofl~~!ig~CJromium Eleclroplal~ng) . .- N 1/25/95 I .!/25!96 . 

12/23/03 

12/23/03 

711 2/05 

611 1/05 

FFFF 

FFFF 

MMM 

Coke Ovens: Pushing, Quenching and Battery Stacks 

Combustion (Gas) Turbines 

Commercial dry cleaning (Perc) transfer machines 

Commercial sterilization facilities 

3anide Chemicals Manufacturing (Generic MACT) 

11110/03 

611 1 102 

611 1/02 

511 6/03 

MMM 

MMM 

N 

L 

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aq-f2-chO7 . 11/19/10 Page 6 of 9 

Ill1 0106 

611 1/05 

611 1/05 

511 6/06 

1 1 /I 0103 

I 111 0103 

6/23/99 

CCCCC 

YYYY 

M 

0 

W 

46-dinitro-o-cresol production (Pesticide Active Ingredient Production) 

Engine Test CellslStands 

Epichlorohydrin elastomers production(Polymers and Resins I) 

resins production (Polymers and Resins II) 

11/10/06 

11/10/06 

12/23/03 

6/23/99 

6/23/99 

1/25/95 

10/27/93 

12/23/03 

12/23/03 

1/25/97 

Varies 

411 4/03 

3/5/04 

9/22/93 

12/6/94 

711 2/02 

MMM 

PPPPP 

U 

W 

411 4/06 

3/5/07 

9/23/96 

12/6/98 

711 2/05 

6/23/99 

5/27/03 

9/5/96 

3/8/95 

12/23/03 . 

5/27/03 

3/5/97 

3/3/98 
Table 6. Source Categories 

I I I Compliance Date 

Categories of Major Sources 

Ethylene-propylene rubber production (Polymers and Resins I) 

Ethylidene norbomene production (MON) 

Explosives production (MON) 

Ethylene Processes (Generic MACT) 

I I I 

Gasoline distribution (Stage 1) R 1211 4/94 1211 5/97 I I 

Fabric Printing, Coating, & Dyeing 

Ferroalloys Production 

Fiberglass Mat Production (wet formed) 

Flexible Polyurethane Foam Fabrication Operations 

Flexible Polyurethane Foam Production 

Friction Products Manufacturing 

Fume Silica Production (Hydrochloric Acid Production) 

1 I i 9 Halo enated solvent cleaners De reasin Or anic Cleaners T 12/2/94 

Subpart 

U 

FFFF 

FFFF 

W 

0000 

XM 

HHHH 

MMMMM 

111 

QQQQQ 

NNNNN 

I I 

Industrial Dry Cleaning (Dry cleaning)- M 9/22/93 12/20/93 .~~ ~- 

Rule Promulgation 

Date or Scheduled 

Promulgation Date 

9/5/96 

11/1 0103 

11/10/03 

711 2/02 

Hard chromium electroplating (ChromiumHazardous Waste Combustion 

Hazardous Organic NESHAP 

Hazardous Organic NESHAP 

Hazardous Organic NESHAP 

Hydrazine production (MON) 

Hydrochloric acid production 

Hydrogen Fluoride Production (Generic MACT) 

Hypalon TM production (Polymers and Resins I) 

for Existing 

Sources 

(if applicable) 

3/5/97 

11/10/06 

1111 0106 

711 2/05 

5/29/03 

5120199 

411 1 102 

411 4/03 

10/7/98 

1011 8/02 

411 7/03 

5/29/06 

5/20/01 

411 1105 

4/14/04 

10/8/0 1 

1011 8105 

411 7/06 

N 

EEE 

F.G 

H 

I 

FFFF 

NNNNN 

W 

U 

Industrial Cooling Towers 

Integrated Iron and Steel Manufacturing 

Iron Foundries 

i I I 

Magnetic Tape EE 1211 5/94 12/15/96 

Large Appliance Surface Coating 

Leather Finishweration 

Lime Manufacturing 

1/25/95 

9130199 

4/22/94 

4/22/94 

4/22/94 

1 111 0103 

411 7/03 

6/29/99 

9/5/96 

Q 

FFFFF 

EEEEE 

1/25/97 

9/30/03 

511 410 1 

511 2/99 

5/12/98 

11/10/06 

411 7/06 

6/29/02 

3/5/97 

NNNN 

nTT 

AAAAA 

Maleic anhydride copolymers production (MON) 

Manufacture of paints, coating and adhesives (MON) 

Marine Vessel Loading Operations 

Mercury cell Chlor-Alkali plants 

Metal Can Surface Coating 

(Polymers and Resins IW I I I 

9/8/94 

5/20/03 

4/22/04 

-- -- 

Metal Coil Surface Coating 

Metal Furniture Surface Coating 

Methylcellulose production (Cellulose Production Manufacturing) 

Methyl methacrylate-acrylonitrile-butadiene-styrene production 

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aqf2-ch07 flIf9lfO Page 7 of 9 

3/6/95 

5/20/06 

4/22/07 

7/23/02 

2/27/02 

01 /05/04 

FFFF 

FFFF 

Y 

11111 

KKKK 

7/23\05 

2/27/05 

01/05/07 

SSSS 

RRRR 

UUUU 

JJJ 

pp 

11/10/03 

11 /I 0103 

911 9/95 

1211 9/03 

1111 3/03 

11/10/06 

11/10/06 

911 9/99 

12/19/06 

11/13/06 

611 0102 

5/23/03 

611 1/02 

911 2/96 

611 0105 

5/23/06 

611 1/05 

7/31/97 
Table 6. Source Categories 

(Polymers and Resins IV) 

Miscellaneous Metal Parts and Products Surface Coa 

Municipal Solid Waste Landfills 1 AAAA 1 1 /I 6/03 I 1 

Compliance Date 

for Existing 

Sources 

(if applicablei 

7/31/97 

Rule Promulgation 

Date or Scheduled 

Promulgation Date 

911 2/96 

Categories of Major Sources 

Methyl methacryiate-butadiene-styrene terpolymers production 

aq-jTch07 . 11/19/10 Page 8 of 9 

Subpart 

JJJ 

Natural gas transmission and storage 

Neoprene production (Polymers and Resins I) 

Nitrile butadiene rubber prod. (Polymers and Resins I) 

Non-nylon polyamides production (Polymers and Resins I) 

Nutritional Yeast Manufacture 

HHH 

U 

U 

W 

CCCC 

611 7/99 

9/5/96 

9/5/96 

3/8/95 

5/21/01 

611 7/02 

3/5/97 

3/5/97 

3/3/98 

5/21/04 
Table B. Source Categories 

Categories of Major Sources Subpart 

Printinglpublishing KK 

Publicly owned treatment works VW 

Pulp and paper production (non-combust) MACT I S 

Pulp and paper production (combust) (Kraff, soda, sulfite) MACT II MM 

Pulp and paper production (non-chemical) MACT Ill S 

I 

Quaternary ammonium compounds production (MON) FFFF 

I 

Rayon production UUUU 

(Cellulose Production ManufacturingJ 

Reciprocating Internal Combustion Engines ZZZZ 

Refractory Products Manufacturing pp SSSSS 

Reinforced plastic composites production WWWW 

Rubber chemicals manufacturing (MON) 

- 

FFFF 

2,4- salts and esters production (Pesticide Active Ingredient MMM 

Production) 

Secondary aluminum prod. RRR 

Secondary lead smelting X 

Semiconductor manufacturing BBBBB 

Shipbuilding and ship repair I II 

Site remediation I GGGGG 

Sodium Dentachloro~henate production (Pesticide Active Ingredient MMM 

Production) 

Spandex production (Generic MACT) W 

Stationary combustion turbines W 

CCC 

Styrene-acmrile production (Polymers and Resins IV) JJJ 

Styrene-butadiene rubber and latex prod. (Polymers and Resins I) U 

Symmetrical tetrachloropyridine production (MON) FFFF 

Taconite iron ore processing RRRRR 

Tetmhydrobenzaldehyde manufacture F 

Tire manufacturing XXXX 

 ord don^^ acid production MMM 

(Pesticide Active lngredient Production) 

i 

Betable oil production -solvent extraction I GGGG 

i 

I 

Wood building products (surface coating) 1 QQQQ 

Wool fiberglass manufacturing NNN 

Date or Scheduled Sources 

Promulgation Date I (if applicable) 

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oq-f2-chO7 . 11/19/10 Pose 9 of 9 
@ rb Minnesota Pollution 

~ontrnl ~gency 

520 Lafayette Road North 

St. Paul, MN 55155-4194 

Crossing Permit Thresholds 

Air Quality Permit Proqam 

Doc Type: Permit Application 

Instructions on Page 2 

la) AQ Facility ID No.: 13700005 I b) AQ File No.: 

2) Facility Name: United States Steel Corporation-Minnesota Ore Operations, Minntac 

Lse In's form to dclnrrninc :I tl~c proposcd changes cause the facility to hecome suojccr for lhe f~rsr rime lo lha req.riremcnt to 

obtain eilher a Stalc or a 9arl70 perm't. Plnasc attach your aocumenlal'on. 

Total Facility PTE before chang~ 

Below all permit thresholds 

Below all permit thresholds 

Total Facility PTE after change 

Remains below all permit thresholds and the 

change does not cause the source or any part 

to become subject to an NSPS (40 CFR pt. 60) 

or a Part 61 NESHAP (40 CFR pt. 61. 

Remains below all permit thresholds but the 

change causes the source or any part to 

become subject to an NSPS (40 CFR pt. 60) or 

a Part 61 NESHAP (40 CFR pt. 61. 

Action required 

No permit action required 

Apply for and receive a permit only for 

those sources subject to that regulation. 

Check applicability of registration permit 

and general permit. 

above a state permit 

threshold but below all 

Part 70 thresholds 1 

Below all permit thresholds 

Below all permit thresholds or 

[7 Above a State permit 

threshold but below all 

Part 70 thresholds 

Above Part 70 Threshold 

Exceeds a threshold for a State permit but not 

for a Part 70 permit. 

Exceeds a threshold for a Part 70 permit 

Remains above a State permit threshold but 

below all Part 70 thresholds 

Apply for and receive a permit to 

construct before beginning actual 

construction. (See instructions for details.) 

Remains above Part 70 Threshold 

You may amend your existing permit. If 

your operating permit has not been 

issued, but the application was submitted 

on time, you may apply for a permit to 

construct and operate the 

modification only. If you have not applied 

for an operating permit, you must apply 

for and receive either a State or Part 70 

permit prior to beginning actual 

construction. 

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aq-f2-chfl . 7/3O/fO Page 1 of 3 
&! 10 Minnesota Pollution 

Control Agency - 520 Lafayette Road North 

St.Paul. MN55155-4194 

CH-I 3 

Applicability Of State Rules 

Air Quality Permit Program 

la) AQ Facility ID No.: 13700005 

I b) AQ File No. 

2) Facility Name: United States Steel Corporation-Minnesota Ore Operations, Minntac 

Some businesses and activities in Minnesota are subject to the following rules. Read each question to determine if the rule applies 

to the equipment or processes you are installing or modifying. If so, be sure to include the rule in Form CD-01, if you are required to 

fill it out for this application. 

3) Minnesota Standards of Periormance for Stationary Sources (Minn. R. ch. 7011) 

3a) Will you be installing or modifying equipment that meets the following definition? 

, "A furnace, boiler or other combustion equipment in Minnesota which burns fossil fuel for the purpose of producing 

steam, hot water, hot air, or other hot liquid, gas, or solid, where the smoke doesn't have direct contact with the 

heated medium for which another standard of performance has not been promulgated." 

No, my new or modified equipment is not subject to Minn. R. 7011.0500-7011.0551. Go to question 3b). 

Yes. Is or will the unit@) be subject to a federal New Source Performance Standard (as identified on Form 

CH-05)? 

Yes, my new or modified equipment is not subject to Minn. R. 701 1.0500-701 1.0551. Go to question 3b). 

No, my new or modified equipment is subject to Minn. R. 7011.0500-7011.0551. Standards of 

Performance for Indirect Heating Fossil-Fuel Burning Equipment. (Read the rule to determine the 

specific requirements that apply.) List the subject unit(s): 

3b) Is your new or modified equipment type or process equipment found in Table 3 on page 7? This table contains only 

state-specific requirements; it does not contain state rules that incorporate federal rules by reference. 

H No, none of the Minnesota Rules listed in Table 3 apply to my new or modified equipment. Go to question 4). 

Yes, my new or modified equipment may be subject to the rule associated with it in Table 3. Read the 

associated rule to see if it applies. 

3c) After reading through Table 3 and any rule that may apply to your proposed change, list the ones that do apply in 

Table 1 (next ~aae). Aaaln. Table 3 contains onlv state-s~ecific reauirements: it does not contain state rules that . -. - 'ncorporare feocral r~les by rcference. You do nor need to list lhe itatc rules that incorporate fcdcral r~les by 

rcference. You do not nccd to list rne Standards of Pcrformancc for 1nd:rect hcatina Foss I-Fuel Burnna - Euuiornenl 

again, if it applies (see 3a, above). 

Table 1: NewIModified Equipment Subject to Minnesota Standards of Performance 

Page 1 of 6 

Emission Source 

-- 

ID Number 

Minnesota Rule Part 

that Applies 

What the Rule Part Applies to 

(Whole facility or Specific Piece of Equipment) 
4) Minnesota Acid Deposition Control (Minn. R. 7021.0050) 

4a) Does your facility generate electricity? 

No. My facility is not subject to Acid Deposition Control Requirements. Go to question 5. 

Yes. Go to question 4b). 

4b) Does your facility contain indirect heating equipment with a rated heat input of more than 5.000 million BTUs per hour? 

No. Go to question 4c). 

Yes. My facility (and possibly my proposed change) is subject to Acid Deposition Control Requirements. 

4c) If your facility is an electric utility, is the total generating capacity of all the electric generating facilities in Minnesota 

which are owned bv vour facilitv's warent comwanv more than 1.000 meaawatts? 

NO. ~y fac;~iy'ls not suijeci to Acid ~c~os~tion Control ~c~uirements 

Yes. My fac'ldy (and possibly my proposed change) 's subject to Acid Dcpos'l'on Control Requirements 

5) Standards of Performance for Industrial Process Equipment (Minn. R. 701 1.0700 - 701 1.0735) 

5a) Are you insta~lilig or modifying any industrial process eqJtpmcnr on-sitc that may generate any air contalninatlt 'n any 

amount and is not rca~lated bv a federal New So~rce Pcrlormancc Standard or MN RJI~S Standaro of Performance? 

Yes. List the units in ~ible 2, then go to item 5b). 

No, my new or modified equipment is not subject to the lndustrial Process Equipment rule. Go to question 6). 

5b) Opacity Standard 

(Note: Opacity is a measure of visible emissions or how much of the view is obscured by stack emissions. The 

emissions causing opacity are oflen smoke or dust.) 

. For industrial process equipment which was in operation before July 9, 1969, the equipment shall not exhibit 

greater than 20 percent opacity, except for one six-minute period per hour of not more than 60 percent 

opacity. An exceedance of this opacity standard occurs whenever any one-hour period contains two or more 

six-minute periods during which the average opacity exceeds 20 percent or whenever any one-hour period 

contains one or more six-minute periods during which the average opacity exceeds 60 percent. 

For industrial process equipment which was not in operafion before July 9, 1969, the equipment shall not 

exhibit greater than 20 percent opacity. 

5c) Does any of the industrial process equipment you listed in Table 2 have particulate control equipment with a collection 

efficiency of at least 99 percent if it was in operation before July 9, 1969. or 99.7 percent if it was not in operation 

before July 9, 1969? 

No. Go to question 5d). 

(7 Yes. These units are considered to be in compliance with the remaining requirements of this rule. 

For those units meeting this criterion which were in operation before July 9, 1969, complete Table 2 by 

checkino the box labeled "Collection Efficiencv > 99%." 

For those units meeting this criterion wn'ch were not n operation oefore .Idly 9, 1969, complete Table 2 oy 

checkina the box abeled 'Col ect'on Efficioncv > 997%. 

Then, if there are units listed in Table 2 which are not controlled by control equipment with a collection 

efficiency of 99% or 99.7% (as applicable). go on to question 5d). 

5d) Has it been demonstrated that the operation of the entire facility in compliance with all ambient air quality standards? 

This is typically shown through some level of computer dispersion modeling. 

Yes. Go to question 5e). 

No. Skip to item 5). 

5e) Is the facility located outside of the seven county Minneapolis-St. Paul metropolitan region? 

Yes. Go to question 59 

No. Skip to item 5i). 

59 Is the facility located outside of the city of Duluth? 

Yes. Go to question 59). 

No. Skip to item 5i). 

59) Is the facility located at least 114 mile from any residence or public roadway? 

Yes. Go to question 5h). 

No. Skip to item 5i). 

5h) Answer this question individually for each remaining unit listed in Table 2 (those which were not identified in item 5c) 

as being controlled by control equipment having a control efficiency of 99% or 99.7% (as applicable)). Does the 

industrial process equipment have particulate control equipment with a collection efficiency of at least 85 percent? 

Yes, the unit is considered to be in compliance with the remaining requirements of this rule. For each unit for 

which you can answer "yes" to question 5h), complete Table 2 by checking the box labeled "Outside MSP & 

Duluth, % mile from roadslresidences, collection efficiency > 85%." Answer question 5h) for each remaining 

unit on Table 2. 

No. For each unit for which you answered "No" to question 5h), complete Table 2 as described in item 5i). Then 

- go to question 6). 

5i) Comptcte Table 2 for all remain ng inousrrial process eq~ipmenr lsted (thosc which wcre not identified in question 5c) 

as beina conlrolled bv control eauionlent havina a conlro, effciencv of 99% or 99.7% (as a~~l~caole)). Us0 Table 4 to 

determie the particiate limit in'eiiher pounds per hour (Iblhr) or grains per dry standard c!ibicfoot igr/dscf). Then go 

to question 6). 

aq-f2-ch 13 

5/6/06 Page 2 of 6 
Table 2: NewlModified Equipment Subject 

Equipment Subject to Industrial Process Equipment Rule 

(list EU number(s)) 

In operation before July 9, 1969 

Not in operation before July 9, 1969 

In operation before July 9. 1969 

q Not in operation before July 9. 1969 

In operation before July 9. 1969 

Not in operation before July 9, 1969 

In operation before July 9. 1969 

q Not in operation before July 9, 1969 

- In operation before July 9. 1969 

Not in operation before July 9. 1969 

- In operation before July 9, 1969 

Not in operation before July 9. 1969 

[7 In operation before July 9, 1969 

Not in operation before July 9, 1969 

In operation before July 9. 1969 

Not in operation before July 9, 1969 

In operation before July 9, 1969 

Not in operation before July 9. 1969 

to Industrial Process Equipment Rule 

Applicable Particulate Limit 

Collection Efficiency > 99% 

[7 Collection Efficiency > 99.7% 

q Outside MSP & Duluth, % mile from roadslresidences, 

collection efficiency > 85% 

0- grldscf 

0- Iblhr 

q Collection Efficiency > 99% 

Collection Efficiency > 99.7% 

Outside MSP & Duluth. % mile from roadslresidences, 

collection efficiency > 85% 

0- grldscf 

0- Iblhr 

Collection Efficiency > 99% 

q Collection Efficiency > 99.7% 

Outside MSP & Duluth, %mile from roadslresidences, 

collection efficiency > 85% 

0- grldscf 

0- Iblhr 

Collection Efficiency > 99% 

Collection Efficiency > 99.7% 

Outside MSP & Duluth. %mile from roadslresidences, 

collection efficiency > 85% 

0- grldscf 

0- Iblhr 

Collection Efficiency > 99% 

Collection Efficiency > 99.7% 

Outside MSP & Duluth, %mile from roadslresidences, 

collection efficiency > 85% 

0- grldscf 

0- Iblhr 

Collection Efficiency > 99% 

Collection Efficiency > 99.7% 

Outside MSP & Duluth, % mile from roadslresidences, 

collection efficiency > 85% 

a- grldscf 

0- Iblhr 

Collection Efficiency > 99% 

0 Collection Efficiency > 99.7% 

Outside MSP & Duluth. % mile from roadslresidences, 

collection efficiency > 85% 

0- grldscf 

0- Iblhr 

Collection Efficiency > 99% 

Collection Efficiency > 99.7% 

Outside MSP & Duluth, % mile from roadslresidences, 

collection efficiency > 85% 

0- grldscf 

0- iblhr 

Collection Efficiency > 99% 

[7 Collection Efficiency > 99.7% 

q Outside MSP & Duluth. % mile from roadslresidences, 

collection efficiency > 85% 

0- grldscf 

0- Iblhr 
6) Waste Combustors (Minn. R. 7011.1201-7011.1290) 

Note: Depending on the type of waste combustor you operate, you may be instructed to fill out one or more of the following 

forms: - WC-01 -- Required if you determine that your waste combustor requires a permit. 

. WC-02 -- Required if you installloperate a Class IV waste combustor at a hospital. 

. WC-03 -- Required if you do not met the stack height requirements of Minn. R. 7011.1235. 

If afler reading through the following section, you determine that you are required to fill out one or more of the WC forms, 

contact the Air Quality Permit Document Coordinator. 

6a) Are you proposing installing or modifying a waste combustor? 

"Waste Combustor" means any emissions unit or emission facility where mixed municipal solid waste, solid waste, or 

refuse-derived fuel is combusted, and includes incinerators, energy recovery facilities, or other combustion devices. A 

metals recovery incinerator is a waste combustor. A combustion device combusting prirnarily wood, or at least 70 

percent fossil fuel and wood in combination with up to 30 percent papermill wastewater treatment plant sludge is not a 

waste combustor. A soil treatment facility, paint burn-off oven, wood heater, or residential fireplace is not a waste 

combustor. 

"Wood is defined as: wood, wood residue, bark, or any derivative fuel or residue thereof, in any form, including 

sawdust, sander dust, wood chips, wood scraps, slabs, millings, shavings, and processed pellets made from wood 

and other forest residues. 

A facility that is co-firing Refuse Derived Fuel (RDF) or Municipal Solid Waste (MSW) at rates less than 30 percent by 

weight is not regulated as a waste combustor, but is regulated as a boiler. 

Yes. I am installing or modifying a waste combustor. Answer questions 6b through 6e to determine whether you 

are allowed to continue to operate, and what type of permit the waste combustor requires. Allowed waste 

combustors must obtain an air emissions permit. 

No, the facility equipment is not subject to this rule. 

6b) Is the wasle combustor solely a crematory, pathological or an animal carcass incinerator? 

Yes. It is subject to standards of performance in Minn. R. 7011.1215, subp. 3. The waste combustor is an 

insignificant activity that does not need to be reported. 

No, the facility equipment is not subject to this rule. 

6c) Is the design capacity of the waste combustor equal to or greater than 3 million Btuthr? 

"Design capacity" means: the hourly throughput of the waste combustor unit based on heat input from solid waste to 

the combustion system as stated by the manufacturer or designer, based on accepted design and engineering 

practices. For a non-continuous feed system, design capacity means the total heat input from solid waste per cycle. 

If you don't have a manufacturer's design capacity in terms of heat input, you may estimate heat input by the following 

formula: 

Hi. = (HHV) x (R) 

Where: 

HI. = Heat input rate 

HHV = heat value of waste 

R =waste input rate, in Iblhr, as defined by the manufacturer 

CommerciallRetailIlnstitutional Wastes = 7000 Btullb 

General Industrial Wastes = 9000 BtuAb 

Medicalllnfectious Wastes = 10,000 Btullb 

Yes. the waste combustor has a design capacily of 3 tnilllon Btulhr or greater. The waslc comoJstor is 

s~biecl to the standards of nerformance an~licable to wasle CombJslors. Tnere are also addit'onal 

application requiremknts for this us, as described in Minn. R. 7007.0501, or 7011.1210. 

Complete form WC-01. 

No, the heat input rate is below 3 million Btulhr. Go to question 6d. 

6d) Is the waste combustor used as a metal recover incinerator? 

"Metals recovery incinerator" means a furnace or incinerator used prirnarily to recover precious and non-precious 

metals by burning the combustible fraction from waste. An aluminum sweat furnace is not a metals recovery 

incinerator. 

17 Yes. The waste combustor is subject to the standards of performance applicable to waste combustors. There 

are also additional permit application requirements for this unit, as described in Minn. R. 7007.0501, or 

701 1.1210. Complete form WC-01. 

I7 No. Go to question 6e). 

Page 4 of 6 
!waste combustor located at a hospital? 

Yes. The waste co~nbustor is suojcct to tho standards of performance applicaole to Class IV waste comoustors. 

There are also addtonal ~crmit aDDlcation reauirnments for this d't, as ocscr'oed in Minn. R. 7007.0501, or 

7011.1210. Complete form WC-02'if the waste'combustor will comply with all of the design, operating, and 

standards of oerformance in Darts 7011.1201 to 701 1.1290. Otherwise, an air emissions uermit must be issued. 

and you-musi complete fork-01. [Please Note: There are federal Standards of performance that must also 

be met for new sources (see Form CH-05), and the state will be adopting more stringent standards for existing 

incinerators.] 

No, the waste combustor is not located at a hospital. The operation of this waste combustor was banned after 

January 30, 1996. Your compliance plan must contain specific steps to cease operation of this waste 

combustor. 

*This table does not include Minnesota Rules which incorporate federal New Source Performance Standards (NSPS) or 

National Emission standards for Hazardous Air Pollutant Sources (NESHAPS) by reference. 

Table 4: Instructions for determining your particulate limit 

Minnesota has a State rule for the concentration of particulate matter that may be in your exhaust stream. The unit of the standard 

is grains per dry standard cubic foot. You need to convert your actual exhaust flow to dry standard cubic feet per minute to find the 

emission limit from the rule. 

Sources subject to this rule are required to meet the emission limits established at all times. These limits will vary depending on 

operating conditions. To determine compliance at any point in time (i.e. for a stack test), follow the steps below: 

1. Determine the amount of dry material (subtract any water or moisture content) in pounds per hour that is processed by your 

equipment. 

2. Use Table 4.1 to determine your allowed emission rate based on process weight rate. If your process weight rate falls between 

two values on the table, interpolate or extrapolate using the equation: 

for P 5 60,000 Ibslhour; and: 

0.16 

= 17.31 (2) for P > 60,000 Ibslhour 

where: E = emission rate in Ibslhour; and 

P = process weight rate in lbslhour 

3. If your process equipment is vented to the atmosphere, determine the airflow through your stack. Correct to 68 F and 14.7 psi, 

and correct to remove any moisture in the gas stream to obtain the air flow in dry standard cubic feet per minute (dscfm). 

Page 5 of 6 
4. Use Table 4.2 to determine your allowed concentration in grains per dry standard cubic foot (grldscf). Interpolate using the 

equation: 

-0.3241 

c = 1.7627 x V 

where: c = concentration in grldscf, 

V = gas volume in dscfm 

5. Determine which of the two emission rates calculated above is less stringent. To convert a concentration (calculated in step 4) 

to an emission rate (calculated in step 2). use the following equation: 

where: 

E = emission rate in Ibslhour: 

c = concentration in grldscf, 

V = gas volume in dsdm 

Table 4.1 

Process Rate Emission Rate 

(Ibslhour) (I bslhour) 

1,000 2.25 

5,000 6.34 

Table 4.2 

Regardless of the allowable emission rates calculated from Tables 4.1 and 4.2, no process equipment is allowed to emit more than 

0.30 grains per standard cubic foot of exhaust gas. 

Source Gas Volume 

(dscfm) 

7,000 or less 

8,000 

9.000 

10,000 

20,000 

30.000 

40.000 

50,000 

60,000 

80,000 

- p~ - ~ 

800,000 

Page 6 of 6 

Concentration 

(grldscf) 

0.100 

0.096 

0.092 

0.089 

0.071 

0.062 

0.057 

0.053 

0.050 

0.045 

0.021 

1,000,000 or more 0.020 
Minnesota Pollution 

Control Agency 

520Lafayette Road North 

St.Pau1. MN 55155-4194 

Compliance Plan 

Air Quality Permit Program 

Doc Typc: Permit Application 

Instructions on Page 7 

Facility Information 

1) AQ Facility ID No.: 13700005 

2) Facility Name: United States Steel Corporation-Minnesota Ore Operations, Minntac 

Submit a separate form for each Emission UniffTanklFugitive Source or Group of Sources as necessary. 1 

3a) Emission Unit /Tank/Fugitive Source identification Number(s): 

Associated Control Equipment Number@): 

Associated Monitoring System(s) (GEMS or COMS): I 

Associated StackNent Number(s): 

OR I 

3b) Group Description: Agglomeration Line 6 

Emission Units/Tanks/Fugitive Sources Included in Group: 313-316 

Control Equipment Included in Group: CE176-I80 

Monitoring Systems (CEMS or COMS) lncluded in Group: MR004 

StacWents lncluded in Group: SV200 

CEMS = continuous emission monitoring system; COMS =continuous opacity monitoring system 

Use Section A of this form when you are applying for the first time for a new individual operating permit (federal or state). This 

includes: 

. permits for construction of new facilities 

. permits for existing facilities that are switching to an individual permit from a Registration Permit, Capped Permit, or 

General Permit 

permits for existing facilities subject to permitting for the first time 

Use Section B of this form when you are applying for an amendment to an existing individual operating permit (federal or state). 

If you have units subject to the Clean Air Interstate Rule (CAIR), you will also need to use Form CD-04. 

Use Form CD-05 to identify operating parameters of control equipment when you are applying for the first time for an individual 

operating permit, or when applying for an amendment to an existing individual operating permit. 

Section A - Compliance Plan for a New Individual Operating Permit 

4) National Emission Standards for Hazardous Air Pollutants (NESHAP) for Source Categories (40 CFR Part 63) 

4a) On Form GI-09A, did you identify a Part 63 NESHAP that is or will be applicable to the item or group identified in 

Question 3a or 3b (of this form)? 

No. Go on to Question 4b. 

Yes. Attach a copy of each applicable Part 63 NESHAP. Highlight all applicable requirements of the entire subpart. 

Attached Not attached 

4b) On Form GI-09A, did you propose limits on the item or group identified in Question 3a or 3b (of this form) so that the 

entire facility is not a major source of HAPS? 

No. Go on to Question 4c. 

Yes. Below, list the limit(s) you proposed, providing the proposed compliance demonstration. 

www.pca.state.mn.us . 651-296-6300 . 800-657-3864 . TW 651-282-5332 or 800-657-3864 . Available in alternative formats 

oq-fl-cdOl . 2/22/11 Page I of 8 
4c) On Form Gi-09A, did you identify that a case-by-case determination of Maximum Achievable Control Technology 

(MACT) is required for the item or group identified in Question 3a or 3b (of this form)? 

Proposed Limit 

No. Go on to Question 5. 

Yes. Attach your case-by-case proposal, including proposed compliance demonstration 

Attached Not attached 

Proposed Compliance Demonstration 

5) National Emission Standards for Hazardous Air Pollutants (NESHAP) (40 CFR Part 61) 

I 

5a) On Form GI-09B, did you identify a Part 61 NESHAP that is or will be applicable to the item or group identified in 

Question 3a or 3b (of this form)? 

No. Go on to question 6. 

Yes. Attach a highlighted copy of each applicable Part 61 NESHAP. Highlight ail applicable requirements of the 

entire subpart. Attached Not attached 

6) New Source Performance Standards (NSPS) (40 CFR Part 60) 

6a) On Form GI-09D, did you identify a New Source Performance Standard that is or will be applicable to the item or group 

identified in Question 3a or 3b (of this form)? 

I7 No. Go on to question 7. 

Yes. Attach a copy of each applicable NSPS. Highlight all applicable requirements of the entire subpart. 

Attached Not attached 

7) Acid Rain Requirements (40 CFR Part 72) 

7a) On Form GI-09E, did you identify that the acid rain requirements are applicable to the item or group identified in 

Question 3a or 3b (of this form)? 

No. Go on to question 8. 

Yes. Refer to http://www.e~a.40v/airmarkets/business/foms.htmi#ar~ for the applicable Acid Rain Program 

forms and instructions. 

Applicable Forms attached and sent to U.S. Environmental Protection Agency (EPA) as appropriate 

Not attached 

8) New Source Review (40 CFR Part 52.21) 

8a) On Form GI-09C, did you propose limits on the item or group identified in Question 3a or 3b (of this form) so that the 

entire facility is not a major source under New Source Review? 

No. Go on to Question 8b. 

Yes. Below, list the limit(s) you proposed, providing the proposed compliance demonstration. 

Proposed Limit 1 Proposed Compliance Demonstration I 

I 

8b) Will the stationary source be permitted as a major source under New Source Review? 

No. Go on to Question 9. 

Yes, Go on to Question 8c. 

www.pca.state.mn.us . 651-296-6300 . 800-657-3864 . TTY 651-282-5332 or 800-657-3864 . Available in alternative formats 

oq-ff-cd0l 2/22/11 Pope 2 of 8 
8c) Is the item or group identified in Question 3a or 3b (of this form) subject to Best Available Control Technology (BACT) 

requirements? 

No. Go on to Question 9. 

Yes. Below, list the BACT requirements proposed for the item or group identified in Question 3a or 3b of this form, 

providing the proposed compliance demonstration. 

Proposed BACT Limit I Proposed Compliance Demonstration 

9) Minnesota Standards of Performance (Minn. R. ch. 7011) 

9a) On Form G -091, did you identify the :tern or group listed in Qucsl'on 3a or 3b (of this form) as boing s~bject lo M'nn R. 

701 1.0515 litem 2a of Form G -09 \. anv orher indusrrv soccilic M~nnesota standard of oerformance (Table 1-1 of Form 

GI-091). orio M~nn. R 701 1.0715 (iiim 4 of Form GI-06l)j 

No. Go on to Question 10. 

Yes. List the ruie(s) and specific iimit(s) below, along with the proposed compliance demonstration 

10) National or Minnesota Ambient Air Quality Standards (NAAQS or MAAQS) 

10a) Is the item or group identified in Question 3a or 3b subject to an existing or proposed limit required in order to meet 

National Ambient Air Quality Standard (NAAQS) or Minnesota Ambient Air Quality Standard (MAAQS)? (This would be 

identified through modeling.) 

No. Go on to Question 11. 

Yes. List the limit(s) below, along with the proposed compliance demonstration. 

Applicable Rule I Rule Limit Proposed Compliance Demonstration 

11) Environmental Assessment Worksheets (EAW) and Air Emissions Risk Analysis (AERA) 

Proposed Limit 

Ila) Did you assume limits on the item or group listed in Question 3a or 3b in order to avoid the need to do an EAW or AERA? 

No. 

Yes: To avoid an AERA and/or To avoid an EAW 

List the limit@) below, along with the proposed compliance demonstration. 

Proposed Compliance Demonstration 

www.pca.state.mn.us . 651 -296-6300 . 800-657-3864 TrY 651-282-5332 or 800-657-3864 . Available in alternative formats 

aq-fl-cd0l . 2/22/11 Page 3 of 8 

Proposed Limit Proposed Compliance Demonstration 
I lb) Does the item or group identified in Question 3a or 3b require limits based on the results of an EAW or AERA that was 

performed? 

No. 

Yes. AERA and/or EAW 

List the limit(s) below, along with the proposed compliance demonstration. 

12) Is there pollution control equipment associated with the item or group identified? 

No. 

Yes. Complete Form CD-05 for each associated control device. 

Proposed Limit 

Section B - Compliance Plan for an Amendment to an Existing Individual Operating Permit 

Proposed Compliance Demonstration 

13) To the extent that your proposed permit amendment consists of edits to existing permit language, you 

should attach to this form a copy of the relevant page(s) of the existing permit with proposed changes 

clearly marked. 

Check one or both of the following statements, as applicable: 

All or part of the proposed permit changes for the item or group identified in Question 3a or 3b is shown by edits to 

the existing permit language, a copy of which is attached to this form. 

Some of the proposed permit changes for the item or group identified in Question 3a or 3b cannot be shown by 

simply marking up existing permit language, so I am answering the questions below. 

For any proposed changes that cannot be easily and clearly shown by submitting marked-up pages from your existing permit, 

answer the questions that follow. 

14) National Emission standards for Hazardous Air Pollutant Sources (NESHAPS) for Source Categories 

(40 CFR Part 63) 

14a) On CH-07, did you identify a newly applicable Part 63 NESHAP for the item or group identified in Question 3a or 3b (of 

this form)? 

No. Go on to Question 14b. 

Yes. Attach a copy of each newly applicable Part 63 NESHAP. Highlight all applicable requirements of the entire 

subpart. Attached Not attached 

14b) On Form CH-07, did you propose limits on the item or group identified in Question 3a or 3b (of this form) so that the 

entire facility is not a major source of HAPS? 

No. Go on to Question 14c. 

Yes. Below, list the limit(s) you proposed, pmviding the proposed compliance demonstration. 

14c) On Form CH-07, did you identify that a case-by-case determination of Maximum Achievable Control Technology (MACT) 

is required for the item or group identified in Question 3a or 3b (of this form)? 

Proposed Limit 

No. Go on to Question 15. 

Yes. Attach your case-by-case proposal, including proposed compliance demonstration. 

Attached Not attached 

Proposed Compliance Demonstration 

www.pca.state.rnn.us . 651-296-6300 . 800-657-3864 . TTY 651-282-5332 or 800-657-3864 Available in alternative formats 

aq-fl-cdOl . 2/22/11 Pare 4 of 8 
15) National Emission standards for Hazardous Air Pollutant Sources (NESHAPS) (40 CFR Part 61) 

15a) On Form CH-06, did you identify a newly applicable Part 61 NESHAP for the item or group identified in Question 3a or 

3b (of this form)? 

No. Go on to question 16. 

17 Yes. Attach a highlighted copy of each newly applicable Part 61 NESHAP. Highlight all applicable requirements of 

the entire subpart. Attached Not attached 

16) New Source Performance Standards (NSPS) (40 CFR Part 60) 

16a) On Form CH-05, did you identify a newly applicable New Source Performance Standard for the item or group identified 

in Question 3a or 3b (of this form)? 

rn No. Go on to question 17. 

Yes. Attach a copy of each newly applicable NSPS. Highlight all applicable requirements of the entire subpart 

Attached 17 Not attached 

17) Acid Rain Requirements (40 CFR Part 72) 

17a) Does the unit or group identified in Question 3a or 3b include new electricity generating equipment capable of generating 

25 MW or more of electricity? 

!Z No. Go on to question 18. 

Yes. The equipment may be subject to acid rain requirements. Refer to htt~:llwww.e~a.qovlairmarketslbusinessl 

forms.html#ara for the applicable Acid Rain Program forms and instructions. 

17 Applicable Forms attached and sent to EPA as appropriate Not attached 

18) New Source Review (40 CFR Part 52.21) 

18a) On Form CH-04, CH-04a, or CH-04b, did you indicate the intention to propose limits on the item or group identified in 

0-esf'on 3a or 3b (of rh:s form) so that In6 proposed modilical!on is no! subjecl lo hew Source ~ev/ew, or so that ent're 

fac:.itv is not a tnaior sourcc under New Source Rcv'ew? 1.f VOJ arc . . ~rogosina .im'ls, bul 011 an :rcm or group other lhan 

identked in ~uesfion 3a or 3b of this form, then answer Nb.j - 

No. Go on to Question 18b. 

Yes. Below, list the limit(s) you are proposing, including the proposed compliance demonstration. Then go on to 

Question 19. 

18b) Is the unit or group identified in Question 3a or 3b (of this form) subject to New Source Review? 

Proposed Limit 

€4 No. Go on to Question 19. 

Yes. Go on to Question 18c. 

lac) Is the item or group identified in Question 3a or 3b (of this form) subject to Best Available Technology (BACT) 

requirements? 

No. Go on to Question 19. 

Yes. Below, list the BACT requirements proposed for the item or group identified in Question 3a or 3b of this form, 

providing the proposed compliance demonstration. 

Proposed Compliance Demonstration 

www.pca.state.mn.us . 651-296-6300 . 800-657-3864 TTY 651-282-5332 or 800-657-3864 . Available in alternative formats 

oq-fi-cd0l . 2/22/11 Page 5 of 8 

Proposed BACT Limit 

Same as existing permit language 

Proposed Compliance Demonstration 
19) Minnesota Standards of Performance (Minn. R. ch. 7011) 

20) National Ambient Air Quality Standard (NAAQS) or Minnesota Ambient Air Quality Standard (MAAQS) 

19a) On Form CH-13, did you identify the item or group listed in Question 3a or3b (of this form) as being subject to Minn. R. 

7011.0515 (item 3a of Form CH-13), any other industry specific Minnesota standard of performance (Table 1 of Form 

CH-13), or to Minn. R 701 1.0715 (item 5 of Form CH-13)? 

rn No. Go on to Question 20. 

[7 Yes. List the rule@) and specific iimit(s) below, along with the proposed compliance demonstration. 

Applicable Rule I Rule Limit Proposed Compliance Demonstration 

20a) Will the item or group identified in Question 3a or 3b be subject to a limit required in order to meet NAAQS or MAAQS? 

(This would be identified through modeling.) 

rn No. Go on to Question 21. 

Yes. List the limit(s) below, along with the proposed compliance demonstration. 

21 b) Does the item or group identified in Question 3a or 3b require limits based on the results of an EAW or AERA that was 

performed? 

El No. 

Yes. AERA andlor EAW 

List the limit@) below, along with the proposed compliance demonstration. 

I I 

Proposed Limit 

21) Environmental Assessment Worksheet (EAW) and Air Emission Risk Analysis (AERA) 

21a) Did you assume limits on the item or group listed in Question 3a or 3b in order to avoid the need to do an EAW or 

AERA? 

rn No. 

Yes. To avoid an AERA and/or [7 To avoid an EAW 

List the limit(s) below, along with the proposed compliance demonstration. 

Proposed Compliance Demonstration 

Proposed Limit 

22) Is there pollution control equipment associated with the item or group identified? 

No rn Yes - Complete Form CD-05 for each associated control device. 

I 

Proposed Compliance Demonstration 

Proposed Limit 

www.pca.state.rnn.us 651-296-6300 . 800-657-3864 . TY 651-282-5332 or 800-657-3864 - Available in alternative formats 

aq-fl-cd01 . 2/22/11 Paye 6 of 8 

I 

Proposed Compliance Demonstration 

I 
& Minnesota Pollution 

control Agency 

520 Lafayette Road North 

St. Paul, MN 5355-4194 

Facility Emissions Summary 

Air Quality Permit Program 

Doc Type: Pennit Application 

Instructions on Page 2 

la) AQ Facility ID No.: 13700005 I b) AQ File No.: 

2) Facility Name: United States Steel Corporation-Minnesota Ore Operations. Minntac 

3a) 

Emission 

Source 

Type 

Source 

ID No. 1 Hr I 1 ;i

Lbs pei Unrestricted Limited Tons per 

313 0 0 0 

CAS#: CAS#: 

Potential Actual 

Lbs per 

Potential 

5) Compact d sc contalntng edllable calculat~on spreadsheet(s) 'ncl~ded 'n the appl~cation package 

[XI Ed~lable ca culat on spreadsheer(s) w~ll be erna~led to the MPCA Lpon reqJest 

Pollutant Name: 

Actual 

Hr tpy tpy yr 

0 0 0 

Unrestricted Lbs per 

www.pca.state.mn.us . 651-296-6300 800-657-3864 . Ti 651-282-5332 or 800-657-3864 . Available in alternative formats 

aq-f1-gi07 . 11241 11 Page 1 of 3 

F Pollutant Name: VOC 

Limited 

Hr tpy tp y yr 

0 0 0 

Tons per Unrestricted Limited Tons per 
@ rcb Minnesota Pollution 

control Agency - 

520 Lafayette Road North 

St. Paul, MN 55155-4194 

Facility Emissions Summary 

Air Quality Permit Program 

Doc Type: Permit Application 

Instructions on Page 2 

la) AQ Facility ID No.: 13700005 I b) AQ File No.: 

2) Facility Name: United States Steel Corporation-Minnesota Ore Operations, Minntac 

Emission 

Source 

Potential 1 Actual 

Lbs per Unrestricted Limited Tons per 

Hr tpy tpv yr I I I 

5) Compacr disc containing edlable calcu ation spreadsheet(?.) :ncluded in tne app.'cat~on package 

N Ed:lable calcJal'on spreadsheet(sj wll be emailed to tne MPCA upon request 

www.pca.state.mn.us . 651-296-6300 . 800-657-3864 . TTY 651-282-5332 or 800-657-3864 . Available in alternative formats 

aq-fl-gi07. 1/24/11 Page 1 of 3 
& Minnesota Pollution 

Control Agency 

520 Lafayette Road North 

St. Paul, MN 55155-4194 

Requirements: CAM (40 CFR pt. 64) 

Air Quality Permit Program 

Doc Type: Permit Application 

Compliance Assurance Monitoring (40 CFR pt. 64) 

AQ Facility ID No.: 13700005 Facility Name: United States Steel Corporation-Minnesota Ore Operations. Minntac 

The CAM rule applies to certain emission units at facilities required to obtain a Part 70 permit. 

In general. CAM applies to emission units meeting the following criteria: 

1. The emission unit is subject to an emission limit or standard (including limits and standards in Minnesota Rules contained 

in the State Implementation Plan) for an air pollutant regulated by Part 70; 

2. Com~liance with the applicable limit or standard is achieved through the use of add-on contml equipment; and . . 

3 Tne eln'ss on ~nt has pre-control eo potcnlia emssions of tnc applicable reg~lateo air polluranr lhat are eq.lal to or 

grcatcr than 100 percent of the Part 70 major source lcvcl for thal poll~lant (in Ions per year). 

For exemptions, see Table C at the end of this form. 

Use of continuous emissions monitoring system (CEMS), continuous opacity monitoring system (COMS), or predictive emission 

monitoring system (PEMS) does not qualify as an exemption to the CAM rule. However. 40 CFR §64.3(d) states that use of a CEMS, 

COMS, or PEMS meets the requirements of Compliance Assurance Monitoring (CAM) 

CAM applicability is determined on a pollutant-by-pollutant basis for each "pollutant specific emissions unit," (PSEU) defined at 40 

CFR § 64.1 as "an emissions unit considered separately with respect to each regulated air pollutant." For purposes of CAM submittal 

requirements, a "large PSEU is an emissions unit with potential confmlled emissions equal to or greater than 100 percent of the 

major source threshold amount for a given regulated pollutant. ("Major source threshold amount" as it applies to Minnesota, means 

100 tons per year of particulate matter (PM), particulate matter smaller than 10 microns in aerodynamic diameter (PMro), particulate 

matter smaller than 2.5 microns in aerodynamic diameter (PM2.5), sulfur dioxide (S02), nitrogen oxides (NOx), volatile organic 

compounds (VOC), carbon monoxide (CO), or lead; 10 tons per year of any hazardous air pollutant (HAP); or 25 tons per year of any 

combination of HAPS. The levels may be different in current or future nonattainment areas. Refer to 40 CFR § 70.2 under the 

definition of "major source" for further detail. "Other PSEUs" are those units whose uncontrolled potential emissions may be equal to 

or greater than 100 percent of the major source threshold amount, but controlled emissions are less than that threshold. 

If you are applying for the first time for a Part 70 permit, afler determining the uncontrolled and controlled potential 

emissions of the emissions units, questions 1-3 must be considered for each large PSEU, as defined above. 

If you are applying for a major amendment to an existing Part 70 permit, after determining the uncontrolled and 

controlled potential emissions of the emissions units, questions '1-3 must be considered for any PSEU, as defined above, to 

which the amendment is applicable. 

If you are applying for reissuance of an existing Part 70 permit: 

CAM appl cabil'ly has alreaoy been determ'ned and ncorporared :n the permir wncrc necessary, ano this 

perm! appl'caton reqi.ests no changes affccling CAM app icability. Done wirh this form Suomit lnis form 

with your application 

CAM appl'cability has already been detcrm ned and :nc.orporatcd in the permit wnere necessary, but I wo.. d 

like to reoucst some cnanaes to the exislinn CAM. Done with this form S..o~n't this form ar~d anew CAM 

Plan reflecting your requegted changes with the application. Also show changes on CD-01-R and the 

Compliance Plan CD-01 received from the MPCA. 

CAM applicability has not been determined for all sources at the facility. After determining the uncontrolled 

and controlled potential emissions of the emissions units, questions 1-3 must be considered for each PSEU 

(large and other) for which CAM applicability has not already been determined through a Part 70 permitting 

action. 

1) Is the unit subject to an emission limitation or standard, specified in either a rule or permit? For existing emission units, check 

your current permit to see if there are any emission limits specified for the emission unit. 

[XI Yes, the emission unit is subject to an emission limitation or standard. Go on to question 2. 

No, the emission unit is not subject to CAM. Record the EU number and reason CAM doesn't apply in Table B. Repeat 

question 1 for next emission unit. 

www.pca.state.mn.us . 651-296-6300 . 800-657-3864 . TTY 651-282-5332 or 800-657-3864 . Available in alternative format5 

aq-fl-gi09h . 4/6/11 Page 1 of 3 
21 Is an add-on control device used to achieve comoliance with that limitation or standard? (For examule, a boiler mav have a 1 ' 

NOx limit and an SO2 limit. If the boiler uses lime'injection for SO2 control but relies on a ~OW-NO~ burner to meet tl;e NOx limit, 

then the emission unit would be subject to CAM for SO2 but not for NOx.) 

Yes. Go on to question 3. 

No, the emission unit is not subject to CAM. Record the EU number and reason CAM doesn't apply in Table B. Return to 

question 1 and repeat for next emission unit. 

3) There are some exemptions allowed by the rule. Review the list of exemptions in Table C, then answer the following question. 

Yes, the emission unit is exempt from CAM. List the emission unit in Table B and repeat questions I through 3 for the next 

emissions unit. When each emission unit has been considered, go on to complete the rest of Table A and Table B. 

No, the emission unit is subject to CAM. List the emission unit in Table A and repeat questions 1 through 3 for the next 

emissions unit. When each emission unit has been considered, go on to complete the rest of Table A and Table B. 

Table A. Emission units subject to CAM 

You must prepare a CAM submittal for each unit listed in Table A, and provide it with the permit or amendment application. The CAM 

submittal, also referred to as the monitoring approach submittal, should include: 

information on indicators (gauges, meters, or other devices used to monitor operating parameters of control equipment) 

indicator ranges, or the process by which indicators are to be established 

performance criteria 

justification for the proposed monitoring 

control device operating data recorded during a performance test, supplemented by engineering assessments or 

manufacturer's recommendations to justify the proposed indicator range 

a test plan and schedule for obtaining data if performance test data are not available 

an implementation plan, if monitoring requires installation, testing or other activities prior to implementation 

Some of this information will be incorporated into the operating permit. The permit will specify the approved monitoring approach 

and the indicator range@), including the averaging periods. 

Table 6. Emission units not subject to CAM 

EU # l~hy ? (not large enough, uncontrolled, exemption category from Table C, etc.) 

I 

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aq-fl-giO9h . 4/6/11 Pose 2 of 3 
Table C. CAM rule exemptions and exceptions 

The CAM rule does not apply to units subject to emission limitations or standards proposed by EPA afler November 15, 

1990, pursuant to section 11 1 or 112 of the Clean Air Act. In situations where some portions of a facility operate control 

devices in order to comply with emission standards issued prior to November 15, 1990, only those portions of the facility 

must comply with the requirements of the CAM rule. 

=, The CAM rule does not apply to Stratospheric ozone protection requirements. 

=1 The CAM rule does not apply to Acid Rain Program requirements. 

=1 The CAM rule does not apply to emission limitations or standards that apply solely under an emissions trading program. 

=1 The CAM rule does not apply to municipally-owned utility peak-shaving units where 

. the unit is exempt from all Acid Rain Program monitoring requirements, and 

. the unit operates for the sole purpose of providing electricity during periods of peak electrical demand or 

emergency situations, and 

the unit will be operated consistent with that purpose throughout the permit term, and 

emissions from the unit are less than 50 percent of the amount required for the source to be classified as a 

major source, based on an average of the last 3 years, and are expected to remain so. 

In situations where continuous compliance monitoring is already specified in an operating permit or applicable 

requirement, the CAM rule exempts the Permittee from additional monitoring requirements and directs the Permittee to 

use the continuous compliance monitoring data to fulfill the CAM rule monitoring and certification requirements. 

Additional information, including a Technical Guidance Document that includes example submittals, is available on the Internet at 

htt~://~w~.eua.aov/ttn/emc/cam.html. 

www.pca.state.mn.us . 651-296-6300 . 800-657.3864 TTY 651-282-5332 01-800-657-3864 . Available in alternative formats 

aq-fl-gi09h . 4/6/11 Page 3 of 3 
Compliance Assurance Monitoring Plan 

Dry Electrostatic Precipitator for PM~M~OIPM~.~ Emissions Control 

from the Grate Kiln 

1. Background 

A. Source Information 

Facility: United States Steel Corporation, 

Minnesota Ore Operations - Minntac 

8819 Old Highway 169 

Mt. Iron, MN 55768 

Emission Unit(s) Description: EU3 13-3 16lSV200lCE179-180 hdnrating Line 6 

Emission Unit(s) ID: EU313, EU314, EU315, EU316 

Stack ID: SV200 

APCD ID: CE 179,180 

B. Applicable Regnlation. Emissions Limit. and Monitoring Requirements 

Regulation: Minn. R. 701 1.0730; Minn R. 701 1.0735; 

40 CFR pt. 63, subp. RRRRR 

Emissions Limit: EU3 13-3 16: 0.03 grldscf; 47 lblhr PM 

EU3 13-3 16: 0.01 grldscf; Front-half Particulate Matter 

Moi~itoring Requirements: Secondary voltage and secondary current to each ESP will be 

used as an indicator, monitor for bypass of Dry Electrostatic 

Precipitator. Normal process operations will not produce 

conditions that adversely affect the ESP, therefore no additional 

process operational parameters will be monitored. 

C. Control Technology: Diy Electrostatic Precipitator 

11. Monitoring Approach 
111. Monitoring Approach Justification 

bypass is defined as any instance the stack cap is lifted and air flow 

om the process is released throng11 the emergency stack, bypassing the 

ontrol equipment. Bypasses trigger corrective action as necessary and 

B. Verification of 

Operational Statos 

Line 6 Waste Gas (EU313-316) 

D. Monitoring 

Frequency 

Data Collection 

Procedures 

(a) Background 

The source will be equipped with two dry electrostatic precipitators in parallel to contsol 

particulate matter emissions. Each ESP will have xxx fields. Particulate matter control is 

estimated to be at least 99%. 

The indicator valnes will be measured continuously. 

Data will be collected by electronic data acquisition equipment. Data 

will be collected at a minimum rate of one reading evely 15 minutes, 

and stored as 1-hour averages according to procedures identified in 

Minn. R.7017.1002 - ,1220. Procedures specified in Minn R.7017.1160 

will be followed for data collection during periods of monitor 

maintenance, monitor quality assurance checks and operational periods 

of less than one hour. 

(b) Ratioilale for Selection of Perfolmance Indicators 

In an ESP, electric fields are established by applying a direct-current voltage across apair of 

electrodes: a discharge electrode and a collectio~~ electrode. Pasticulate matter suspended in the 

gas steam is electrically charged by passing through the electric field around each discharge 

electrode (the negatively charged electrode). The negatively charged particles then migrate 
toward the positively charged collection electrodes. The particulate matter is separated from the 

gas stream by retention on the collection electrode. Particulate is removed from the collection 

plates by rapping the plates. The seconda~y voltage drops when a malfunction, such as grounded 

electrodes, occurs in the ESP. When the secondary voltage drops, less pa~.ticulate is charged and 

collected. Also, the secondary voltage can remain high but fail to perform its fi~nction if the 

collection plates are not cleaned, or rapped, appropriately. If the collection plates are not cleaned, 

the current drops. Since power is the product of the voltage and current, monitoring the power 

input will provide a reasonable assurance that the ESP is functioning properly. 

(c) Rationale for Selection of Indicator Ranges 

The selected excursion levelis an hourly average voltage and current less than xxx Volts and xxx 

Amps. When an exc~irsion occurs, corrective action will be initiated, beginning with an 

evaluation of the occurrence to determine the action required to correct the situation. All 

excursions will be documented and reported. 

The indicator range for the voltage and current will be selected based upon the manufacturer's 

recommendation following the frst comnpliance/performance test . The nor~nal operating voltage - - is set at the highest level acl~ievable witliout having an excessive spark rate. 

(d) Control device operating parameter data collected used to justify the proposed indicator range. 

Not Applicable. A continuous data acquisition system will be used to demonstrate compliance. 

(e)Test plan and schedule for obtaining data if performance test data are not available. 

The initial performance test will be conducted according to the Schedule of Compliance. Test 

procedures will be specified in the pre-test plan as required by Minn R. 7017.2030. 

(f) Implementation plan. 

The voltmeter, ammeter, and data acquisition system will be installed and calibrated per 

manufacturer's specifications. An initial performance test will be conducted. 
Minnesota Pollution AIRQ~AL~Y PERMITAPPLICA~IONFORM GI-02 - 520 LAFAYETTE ROAD Control Agency ST. PAUL, MN 55155-4194 - PROCESS FLOW DIAGRAM 

5/13/98 

1) AQ Facility ID No.: 13700005 

2) Facility Name: United States Steel Corporation-Minnesota Ore Operations, Minntac 

3) Flow Diagram: 

0 Am QUALITY 

PERMlT APPLICATION FORM GI-03 

- 520 LAFAYETTE ROAD IY 

FACILITY AND STACKNENT DIAGRAM 

~i~~~~~t~ ST. PAUL, MN 55155-4194 2/16/05 

Pollution 

Control 

Agency 

1) AQ Facility ID No.: 13700005 

2) FacilityName: United States Steel Corporation - Minnesota Ore Operations, Minntac 

3) Facility and StacldVent Diagram: 

Form GI-03 

Page 1 of 2 I 

Minnesota Pollution &aumY mmm APPLIcATIoN *om GI-04 

520 LAFAYETTE ROAD STACKNENT INFORMATION 

ST. PAUL, MN55155-4194 71zs105 

C~CCC - Control Agency 

1) AQ Facility ID No.: 13700005 2) Facility Name: United States Steel Corporation-Minnesota Ore Operations, 

Minntac 

3h) 

Discharge 

~i

U 

aq-fl-gi04.doc Form GI-04 

Page 1 of 5 

30 

Exit Gas 

Temperature 

(" F) 

170 

3 e) 

Design 

Rate at Exit 

(acfm) 

703,000 

3g) 

Rate/Temp 

Source 

E 

34 

Inside Diameter in ft. 

(left column only) 

or 

Length x Width in ft. 

(both columns) 

13 

3 c) 

Height of 

Opening 

From 

Ground 

(ft.1 

140 

34 

sv ID 

No. 

200 

3b) 

Operator's Description 

Line 6 Waste Gas Stack 
Minnesota Pollution 

Control Agency 

520 Lafayette Road North 

St Paul, MN 55155-4194 

GI-05A 

Pollution Control Equipment Information 

Air Quality Permit Program 

Doc Type: Permit Applicafion 

Instructions on Page 2 

la) AQ Facility ID No.: 13700005 Ib) AQ File No.: 

2) Facility name: United States Steel Corporation-Minnesota Ore Operations, Minntac 

I 3d) 1 3e) 3i) / Afterburner, 

Control 

equip 

ID no. 

TBD SOX, HF 100 95 

176 

CE type 

code 

179 / 010 1 Electrostatic Precipitator,high I TED 

I I I I 1 I I I 

071 

178 

1 TBD 

Description 

PMIPMIO 1 I00 

Fluid Bed Dry Scrubber 

I I I I I I 

048 

Manufacturer 

w.pca.state.rnn.us 651-296-6300 - 800-657-3864 Tr( 651-282-5332 or 800-657-3864 . . Available in alternative formats 

oq-f 1-gi05a . 5/23/11 Pose I of 6 

TED 

Carbon Absorption 

180 

- 

Model no. 

TBD 

TED 

010 

Pollutants 

controlled 

SOX, HF 

TED 

Electrostatic Precipitator, high 

eff. 

Capture 

efficiency 

100 

HLl 

TED 

Destructl 

collect 

efficiency 

95 

Oxidizer 

combustion 

parameters 

100 

TED 

------- 

+50 

PMIPMIO 100 +99 
@ 110 Minnesota Pollution 

control Agency 

520 Lafayette Road North 

St Paul, MN 55155-4194 

Compliance Plan for Control Equipment 

Air Quality Permit Program 

Facility Information 

1) AQ Facility ID No.: 13700005 

2) Facility Name: United States Steel Corporation-Minnesota Ore Operations, Minntac 

3) Electrostatic Precipitators (includes wet electrostatic precipitators) (control codes 010, 011, 012, 128, 146) 

Complete the following information for each electrostatic precipitator not already included in an existing individual permit. For changes to parameters of electrostatic 

precipitators already included in an existing permit, attach a copy of the relevant permit page with proposed changes clearly marked. 

180 1 Vendor Specification 

For a "Large" 

or 'Other" 

PSEU? 

179 

CE 

Number: 

Using 

conditioning 

agent? 

Vendor Specification 

!Xi NO 

Yes 

Control Efficiency Basis (for 

control and capture efficiencies 

listed on Form GI-05A) 

No 

Yes 

Conditioning 

agent flow rate, 

if applicable 

E NO 

Yes 

TBD 

NO 

Yes 

CAM = Compliance Assurance Monitoring 

PSEU = Pollutant specific emission unit 

Subject 

to 

CAM? 

Using control 

equipment 

rule? 

No 

I3 Yes 

[7 No 

Yes 

aq-f l-cd05 

3/19/08 

TED 

TED 

No 

Yes 

Page 1 of 8 

Voltage 

Yes 

No 

No 

Yes 

TED 

TBD 

Large 

Other 

[7 NA 

Yes 

No 

Secondary 

Current 

Large 

Other 

NA 

I3 Yes 

No 

Minimum 

Fields 

Online 

TED 

iZ No 

I3 Yes 

Large 

Other 

NA 

€a NO 

Yes 

ISI Yes 

I3 No 

i8 Large 

Other 

[7 NA 
4) Fabric Filters (control codes 016, 017, 018) 

Complete the following information for each fabric filter not already included in an existing individual permit. For changes to parameters for fabric filters already included in an 

existing permit, attach a copy of the relevant permit page with proposed changes clearly marked. 

CE 

Number: 

No OYes 

q No OYes 

Control Efficiency Basis (for control and 

capture efficiencies listed on Form GI-05A) 

Yes q No 

q No OYes 

No OYes 

Using control 

equipment rule? 

q Yes No 

ayes NO 

q No OYes 

5) PanelNYall Filters (including HEPA filters) (control codes 058, 101) Mechanically Aided Separators (control code 056,113) 

Bag leak detector 

in use? 

Pressure Drop (inches 

of water column) 

NA Large Other 

Yes q No 

q No UYes 

Complete the following information for each wall or panel filter not already included in an existing individual permit. For changes to parameters for filters already included in 

an existing permit, attach a copy of the relevant permit page with proposed changes clearly marked. 

OYes q No 

q Yes [7 NO 

CE 

Number: 

Subject to 

CAM? 

Large other 

q NA 

q Yes No 

q Yes No 

For a "Large" or 

"Other" PSEU? 

q Large NA Other 

Yes q No 

oq-f 1-cd05 

31 19/08 

q Large other 

NA 

UYes No 

Page 2 of 8 

17 [7 Large NA I7 Other 

For a "Large" or "Other" PSEU? 

Large q Other NA 

q Large Other q NA 

q Large Other NA 

Large q Other q NA 

Large q Other q NA 

q Large q Other q NA 

Control Efficiency Basis (for control and 

capture efficiencies listed on Foml GI-05A) 

Using control equipment rule? 

OYes q No 

OYes No 

Yes No 

UYes No 

OYes q No 

OYes No 

Subject to CAM? 

OYes I7 No 

OYes No 

UYes No 

OYes No 

OYes q No 

q Yes No 
6) CycloneslMulticlones (control code 007,008, 009, 076) 

Complete the following information for each cyclone or multiclone not already included in an existing individual permit. For changes to parameters for cyclones or multiclones 

already included in an existing permit, attach a copy of the relevant permit page with proposed changes clearly marked. 

For a "Large" or "Other" PSEU? 

7) Wet Cyclone Separator (control code 057,085) 

Complete the following information for each wet cyclone separator not already included in an existing individual permit. For changes to parameters for wet cyclone 

separators already included in an existing permit, attach a copy of the relevant permit page with proposed changes clearly marked. 

For a "Large" or 

No ayes 

No OYes 

Subject to 

No OYes 

aq-f 1-cd05 

3/19/08 Page 3 of 8 

Water 

Yes No 

ayes No 

No Dyes 

No OYes 

No Dyes 

Pressure Drop (inches 

Large q Other 

NA 

Large Other 

Yes No 

equipment rule? 

Using control 

Number: 

CE 

, NA 

Large Other 

NA 

Yes No 

Yes No 

Yes No 

capture efficiencies listed on Form GI-05A) of water column) 

Control Efficiency Basis (for control and 

Large Other 

13 NA 

Large Other 

NA 

Large Other 

NA 

pressure (psi) CAM? "Other" PSEU? 
8) Spray Tower (control code 052), Venturi Scrubber (control code 053), Impingement Plate Scrubber (control code 055), or Charged Scrubber (control code 503) 

Complete the following information for each wet scrubber not already included in an existing individual permit. For changes to parameters for wet scrubbers already included 

in an existing permit, attach a copy of the relevant permit page with proposed changes clearly marked. 

For a "Large" or 

"Other" PSEU? 

q - Large q Other .," 

No OYes 

q NO OYes 

q No Yes 

Liquid flow rate 

(~allmin) 

CE 

Number: 

q Yes q No 

17 No Yes 

9) Condensation Scrubber (control code 517) 

Subject to 

CAM? 

Yes q No 

Using control 

equipment rule? 

No OYes 

Control Efficiency Basis (for control and 

capture efficiencies listed on Form GI-05A) 

Large q Other 

17 NA 

, DNA 

Yes q No 

Yes 17 No 

NO Dyes 

Complete the following information for each condensation scrubber not already included in an existing individual permit. For changes to parameters for condensation 

scrubbers already included in an existing permit, attach a copy of the relevant permit page with proposed changes clearly marked. 

Pressure Drop (inches 

of water column) 

Large Other 

NA 

Large q Other 

q Yes q No q Large 5 Other 

q NA 

Yes q No 

I I / Yes q No 1 q Large Other n ~IA 

q Large Other 

NA 

For a "Large" or 

"Other" PSEU? 

[7 Large q Other 

Page 4 of 8 

Subject to 

CAM? 

OYes q No 

No 

--- 

OYes 5 Yes q No q Large q Other 

aq-f l-cd05 

31 19/08 

No OYes 

Steam Supply 

rate (units) 

CE 

Number: 

Blowdown Rate 

(units) 

Using control 

equipment rule? 

q No OYes 

Control Efficiency Basis (for 

control and capture efficiencies 

listed on Form GI-05A) 

q Yes q No 

Pressure Drop 

(inches of water 

column) 

ONO ayes I 

q Large q Other 

R NA 

UYes q No Large Other - .,- 
10) Thermal Oxidation (control code 021, 022,131,133, 510) 

Complete the following information for each thermal oxidizer not already included in an existing individual permit. For changes to parameters for thermal oxidizers already 

included in an existing permit, attach a copy of the relevant permit page with proposed changes clearly marked. 

11) Catalytic Oxidation (control code 019,020, 109, 116, 509) 

Complete the following information for each catalytic oxidizer not already included in an existing individual permit. For changes to parameters for catalytic oxidizers already 

included in an existing permit, attach a copy of the relevant permit page with proposed changes clearly marked. 

For a "Large" or 

"Other" PSEU? 

Large [7 Other 

NA 

1 Large q Other 

NA 

Large Other 

q NA 

Large Other 

17 NA 

q Large Other 

q NA 

CE Control Efficiency Basis (for control and Using control Catalyst Bed Inlet and Outlet Subject to CAM? For a "Large" or 

Number: 1 ca~ture efficiencies listed on Form Gl-05.4) / equipment rule? I Reactivily (units) I Tempratures 1 1 "Other" PSEU? 

Inlet and Outlet 

Temperatures 

(degrees F) 

Inlet: 

Outlet: 

Inlet: - 

Outlet: 

Inlet: - 

Outlet: 

Inlet: - 

Outlet: 

Inlet: - 

Outlet: 

Combustion 

Temperature 

(degrees F) 

CE 

Number: 

~ 

~ ~ 

I 

Residence 

Time 

(seconds) 

Control Efficiency Basis (for control and 

capture efficiencies listed on Form GI-05A) 

0 1 q NO q yes 1 UNA 

Subject to 

CAM? 

I3 Yes 

NO 

q Yes 

q No 

q Yes 

q No 

Yes 

17 No 

1 Yes 

q No 

Using control 

equipment rule? 

q No 

Yes 

q NO 

Yes 

q NO 

q Yes 

NO 

q Yes 

q NO 

Yes 

Inlet: - ( Yes q No I q Large q Other 

IONO OY~S I outlet: 

aq-f 1-cd05 

3/19/08 

Inlet: - 

I ONA 

No OYes 

q No OYes 

Page 5 of 8 

~- -- ~~ 

1 Yes No I Large Other 

IONO OY~S 1 lnlet: - I q Yes q No 1 Large q Other 

Outlet: 

Inlet: 

Outlet: 

Inlet: - 

- 

Yes No 

1 Yes q No 

NA 

Large q Other 

17 NA 

q Large q Other 
12) Vapor Recovery Systems (including condensers) (control code 047) 

Complete the following information for each vapor recovery system not already included in an existing individual permit. For changes to parameters for vapor recovery 

systems already included in an existing permit, attach a copy of the relevant permit page with proposed changes clearly marked. 

Complete the following information for each control device not described above and not aiready included in an existing individual permit. For changes to parameters for any 

other control devices that are already included in an existing permit, attach a copy of the relevant permit page with proposed changes clearly marked. 

CE I Control Efficiencv Basis (for control and I O~eratina Parameters (describe) 1 Subiect to CAM? I For a "Large" or "Other" PSEU? 

Subject to CAM? 

q Yes No 

q Yes q No 

OYes No 

OYes q No 

Yes No 

CE 

Number: 

aq-f 1-cd05 

3/19/08 Page 6 of 8 

For a "Large" or 

"Other" PSEU? 

Large Other 

q Large Other 

q NA 

Large Other 

17 Large q Other 

NA 

q Large Other 

q NA 

Temperature 

Range (degrees F) 

Control Efficiency Basis (for 

control and capture efficiencies 

listed on Form GI-05A) 

13) Flaring (control code 023) 

Complete the following information for each flare not aiready included in an existing individual permit. For changes to parameters for cyclones or multiclones already 

included in an existing permit, attach a copy of the relevant permit page with proposed changes clearly marked. 

Number: 

176 

177 

178 

Condenser Pressure 

Drop Range (inches of 

water column) 

capture efficiencie; listed on Form GI-05A) 

Vendor Specification 1 

Vendor Specification 

Vendor Specification 

Filter Pressure Drop 

Range (inches of 

water column) 

-- 

131 Other Controls 

Subject to CAM? 

OYes 

nYes q No 

OYes 1 yes q No 

• Yes No 

CE 

Number: 

For a "Large" or "Other" PSEU? 

Large C7 Other q NA 

q Larae Other NA 

q Large [3 Other q NA 

Laige Other q NA 

q Large q Other q NA 

Using control 

equipment rule? 

No Yes 

No OYes 

q No Dyes 

No OYes 

q No OYes 

Control Efficiency Basis (for control and 

capture efficiencies listed on Form GI-05A) 

-- 

- 

CEMS, SO2 1 

CEMS. SO2 1 

Activated Carbon injection. Hg 

Temperature 

(indicating presence 

of flame) (degrees F) 

Yes €4 No 

yes rn No 

OYes IXI No 

OYes q No 

Dyes No 

Large Other (ql NA 

q Large Other NA 

[7 Large Other (ql NA 

q Large q Other q NA 

Large Other NA 
TABLE A: LIMITS AND OTHER REQUIREMENTS 

Facility Name: US Steel Cofp - Minntsc 

Permit Number: 13700005 - 005 

Sublect Item: GP 011 Agglomeration Llnes 6 & 7 (Actlon 007) 

Associated Items: CE 123 Other 

CE 124 Gravity Colleclor- High Efficiency 

CE 125 Mulllple Cyclone wlo Fly Ash Reinjection - ~ost Mulliclanss . . 

C, q - ~\.t~&-a*h&r ?""PL*~-** '* 

CE 133 Other 

CE 134 Gravity Colleclor - High Efficiency CG (I(. - FF.\.~ &d Dl73 SSCRLLwir 

eG 171 - pt~c) b.t~ ONJ SLQU'~\O.I~ 

CE 135 Multiple Cyclone wlo Fly Ash RsinJection - Most Multlclones 

CE 136 Wet Scrubber-High Efliciency wlo Llme 

EU 313 L6 Traveling Grale 

EU 314 LG Recoup System Air 

EU 315 L6 Rotary Klln 

EU 316 L6 Pellet Cooler Secondary Air 

EU 332 L7 Traveling Grate 

EU 333 L7 Recoup System Air 

EU 334 L7 Rotary Kilo 

EU 335 L7 Pellet Cooler Secondary Alr 

zoo 

MR 004 NOx 8 SO2 CEMS at Line 6 Wasle Gas Stack (SV 4.tat 

MR005 NOx 8 SO2 CEMS at Llne 7Wasle Gas Stack (SV 151) 

+++4-L6 Wasle Gas Slack SV2oo cod0 - 

d. ,-4CUUm~s tus~IJ4 s~03Jc)OL 

SV 151 L7 Waste Gas Slack ,-Lq,& b3 

I I I 

What to do 

A. POLLUTANT LIMITS 

I 

Why to do It 

hdr 

Nilrogen Oxides: less than or equal lo 5000 lbslhour using 24.hour Black Average 

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

144, and 151) at Permit Issuance. 

I Nilrogen Oxides: less lhan orequai lo 13300 tonslyear using 365-day Rolling Sum 

from ail five waste gas slacks combined (GP 009 through 01 1; SV 103,118,127, 

144. and 151) at Permit Issuance. ReDresenlalive NOx emlsslon dala shall be 

used lo demonstrate compliance for the first 365 days. 

Nilrogen Oxides: less lhan or equal to 7300 Ionslyear using 365.day Rolllng Sum 

from all five Wasle gas stacks combined (GP 009 through 01 1; SV 103. 118.127. 

144, and 151) no later lhan Feb. f, 2010. 

Title I condilions: to miligate adverse Impacts on Class 

I areas vlslbllily lrom pellet induralion; 40 CFR 52.21 

(p); Mlnn. R. 7007.3000 

Tltle I condlllons: to mlflgate adverse lmpacls on Class 

I nreas vlslbilily from pellet lnduratlon; 40 CFR 52.21 

(p); Mlnn. R. 7007.3000 

I 

Title I conditions: to millgale adverse Impacts on Class 

I areas vislbllity from pellel induralion: 40 CFR 52.21 

(p]; Mlnn. R. 7007.3000 

Fluorides: less lhan or cqual lo 132 lbslhour Lslng 3-lio~r Avnragc al Line G Title I Cond:linn BACT nmssion I m 1. 40 CTR 

Wasle Gas StackjS-V-134)andi. 7 Wens Slacm 15l),~~~l.vcly- 2_21fj)(3); Minn. R. 7007 3000. . 

Carbon Monoxldo less llian or cq~at to 74 0 lbslho!lr itsing 3-ho~rAvarago al l.inc Tillc 1 Condil'ow RACTcnlisrlon 'm.1. 40 CFR 

6 Waslc Gas Slscd (SV 14?)_endL~WaStcGasSlack (Sa1). rcsp*ely. t-- ..... - . 

Carbon Monoxld~ less than or eqba. lo 99 Ionslycar using 12-.nontn Rolo:ng St~m Tllle I Coldll on: a 1997 act'on lnal avo'ded maol 

(for trio combdsllon olwood wasle (wooo. wood bark, and safidua) al Lines 6 and (~l~~~:fic~t:o~ ~nder4O CFR 62.21 I 

Vclot~le Organlc CompoJnas: ess lnan or equa lo 54 3 loslhour using 3-hour T~lle ICond lion. DACT cmisson i.m L. 40 CFR 

Average. as propane, a1 Llnc 6 Was10 Gas Stack (SV 144) and Lino 7 Wasle Gas 52 210)(3): Minn R. 7007.3000. 

~ .- I 

- ..... ...... .- .... - .- 

Maller: grealer lhan or equal to 85 perccn! collect'on clficioncy . M'nn. R. 7011.0610, s.bp. I(A)(l): Minn It. 

cntlre em ssion facill~y is in compliance with NAAQS and - tiol ,~5, sJbp. 3 

- ~ 

VolaUle Organlc Compodnds: less lnan or cqdai to 39 lonsljwar Lsng $2-month 

Roll:ng Sum for lnc comOJslion of wood waslo (wooo, wood balk, and sawaJst) at 

Un~s>and?comblned. . ..... 

Tola Panlc~late Malter: less lhan or cqual lo 0 3 grainslary stanoard cublc foot of 

oxhs~lst gas unless requlred lo lurlhcr reduce emlsslons to cdntply rvllh the less 

slringenl ltmlt of etner Mlnn R. 701 1.0730 or Minn R. 701 1.0735; or, a lernatively. 

IMAAQS, and theemlsslon facility is located nolless than one-forlh mile from any 1 1 

Tillo I Condillon: a 1997 ac! an lhal avoidca ma,'or 

classificalion irnecr 40 CFR 52 2 1 

. -. ... -- . - 

Minn. R 7011.0510. subp I(A)(1) 

I resldence or public roadway. (This Is an alternalive demonslralion of compliance to 

Total Particulate Malter Limit.) I 
TABLE A: LIMITS AND OTHER REQUIREMENTS A-I s 12122108 

Facility Name: US Steel Corp - Minnlec 

Permit Number: 13700005 - 005 

I Nolhcalion of !no Actual Ualo of ln;~ ai Sladup: due 15 days afler 1nil.a SlanJp of Title I conditions: tom llgale advcrso impacts on Class 

tho last 'nslallcd lravul ng gr3lc prehcat Lovt N3x tlurner(s) of al! livc aggiomerator I aroas v'sibility from pel ct induration; 40 CTR 52.21 

lilies il.ines 3. 4. 5.6. and 71. The Porm'rted shall 1st nd;v,dJal dolcs GI in:llsl ID): Mlnn I?. 7007.3000 

Sulfur Dioxide: iess than or equai lo 2 ibs/million Btu heat inpul .if a liquid fossn 

fuel is burned: or iess than or equal lo 4 lb~lmlllion Blu heat inpul, if a solid fossil 

fuei Is burned. 

Opaciiy: iess than or equai to 20 percent opacily except for one slx-minule period 

per hour of.not more lhan 60 parcent opacity. 

B. OPERATION REQUIREMENTS 

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

Facllily. Section F. and Subjed Items MR 001 through MR 005: and in Table 8) 

Inslaii: due before 1213!/2009. Low NOx Burners at the traveling giat8 preheat 

zone of each line of Agglomerator Llnes 6, and 7. 

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

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

hdr 

Title I conditions: to mltigate adverse impacls on Class 

I areas vlsibilily from peiiel indurallon; 40 CFR 52.21 

(p): Minn. R. 7007.3000 

. ,~. 

startupof ~ow~0xB'urners'in (he notice. {This is a reminder. This requirement 

also appear in Table B oithis permit.) 

FUQI Reslrlctlons: The Permittee shail combust at the klln burner nalumi gas, coal. 

luel oll, andlor types of biomass thal are specilied in Appendln 1 of this permit; and 

a1 lhe preheat burners nalural gas. Other fuels may be combusted lor a shod 

geriod of time during a lrial burn as approved by an ernendmen1 lo lhis permit 

ilarly, the ratio of SV 151 gas flow to tolal heal input of Line 7. The ratio will be 

.. . ~ 

Titfe I Condition: To address fuei oplions for the 

indurallng process modification of 1987-1989, 40 CFR 

52,21u)(3); Minn. R. 7007.3000; Mlnn. R. 7007.0800, 

subp. 2 . 

Healing Value and Usage of wood Waste Fuel: a representative wood waste luel 

semple shall be conliected and analyzed for heating value (Btulib) once each 

calendar quarter. The Permittee shall record, in lonslmonlh, [he amount ofwood 

waste combusted In lhe kilns of this Group. 

Title I Condilion: a 1997 action thal avoided major 

ciassilic~lion under 40 CFR 52.21 
TABLE A: LIMITS AND OTHER REQUIREMENTS 

Facilily Name: US Steel Corp - Minnlac 

Permit Number: 13700005- 005 

Performance Test: due before end of each 60 months slarling 0412012005 on the 

slack that was not tesled in the previous 60-month period to measure PM and 

Opacity emissions. 

Performance Test Pre-tesl Meetlng: due 7 days before Performance Test 

Minn. R. 7017.2020, subp. 1 

Mlnn. R. 7017.2030. subp. 4 ~.