MINNESOTA POLLUTION CONTR'OL AGENCY

WEB NOTICE ON DRAFT/PROPOSED

AIR EMISSION FACILITY PERMIT

NOTICE IS HEREBY GIVEN, that the Commissioner of the Minnesota Pollution Control Agency (MPCA)

proposes to issue Air Emission Permit No. 13700005-006, to US Steel Corp for their facility located at

8819 Old Highway 169, Mountain Iron, St. Louis County, Minnesota.

The permit action is for construction and operation of the facility. The permit action is a major

amendment; therefore, the draft/proposed permit has been placed on public notice. The MPCA is

seeking the U.S. Environmental Protection Agency's (EPA) concurrent review of this draft/proposed

permit and the EPA45-day review period will begin with the 30-day public review period.

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

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

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

rates. Remaining pollutants will remain at previously permitted rates .

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

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

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

installation of Low NOx Burners at the traveling grate preheat zones of the Agglomerator Lines 3 -7.

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

Low NOx burners in 2009.

A summary of the Emissions Increase in tons per year is as follows:

Pollutant PM PMlO PM2.5 S02 NO. VOCs CO C02e Lead

Emissions Increase 0* 0* 0* 0* 0* 0.7 3.2 15,049 0*

from Low NOx

burners

PM = Particulate Matter

PM2.5 = PM smaller than 2.5 microns

NO. = Nitrogen Oxides

CO = Carbon Monoxide

PMlO = PM smaller than 10 microns

S02 = Sulfur Dioxide

VOCs = Volatile Organic Compounds

C02e = Carbon Dioxide Equivalents as defined in Minn. R.

7007.0100

*indicates no emissions increase

The Permittee is not required to submit a pollution prevention progress report pursuant to Minn. Stat. 9

115D.08.

The preliminary determination to issue the air emission permit is tentative. There are four formal

procedures for public participation in the MPCA's consideration of the permit application. Interested

persons may (1) submit written comments on the draft/proposed permit; (2) request tha.t the MPCA

hold a public information meeting; (3) request the MPCA hold a contested case hearing; and/or (4)

submit a petition to the Commissioner requesting that the MPCA Citizens' Board (Board) consider the

permit matter.
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The decision whether to issue the permit and, if so, under what terms, will be presented to the Board

for decision if: (1) the Commissioner grants the petition requesting the matter be presented to the

Board; (2) an Board member requests to hear the matter prior to the time the Commissioner makes a

final decision on the permit; or (3) a request for a contested case hearing is pending. Otherwise, the

Commissioner will make the decision.

Persons who submit comments or petitions to the MPCA must state (1) their interest in the permit

application or the draft permit; (2) the action they wish the MPCA to take, including specific refere,nces

to the section of the draft permit they believe should be changed; and (3) the reasons supporting their

position, stated with sufficient specificity as to allow the MPCA to investigate the merits of the position.

As described in Minn. R. 7000.1800, persons who submit requests for a contested case hearing must

also state the issues they propose to address in a contested case hearing, the specific relief requested or

resolution of the matter, and the reasons (which may be in the form of proposed findings) supporting an

MPCA decision to hold a contested case hearing. Failure to comply with these rules exactly may result in

a denial of the request. The decision whether to hold a contested case hearing will be made under Minn.

R. 7000.1900. Most public libraries throughout the state have copies of the current Minnesota Rules.

They are also available on the Internet at www.revisor.leg.state.mn.us.

The public comment period commences June 8, 2013, and terminates July 8, 2013. Comments must be

received in writing at the MPCAby 4:30 p.m. on July 8,2013. Evidence of timely receipt includes a

date/time stamp imprinted on the first page of the written comments by the first floor information and

reception area of the MPCA or by the Industrial Division support staff, or receipt by fax.

Comments, requests, and petitions should be sent to:

Sarah Seelen, Air Quality Permits Section

Industrial Division, Minnesota Pollution Control Agency

520 Lafayette Road North, St. Paul, Minnesota 55155

651-757-2677 - Voice, 651-269-8717 - Fax

A copy of the draft/proposed permit will available on the MPCA's website at

http://www.pca.state.mn.us/news/data/index.cfm?PN=l, or will also be mailed to any interested

person upon the MPCA's receipt of a written request. Additional materials relating to the issuance of

this permit are available for inspection by appointment at the Minnesota Pollution Control Agency;

520 Lafayette Road North, St. Paul, Minnesota 55155, phone 651-757-2677, and, between the hours

of 8:00 a.m. and 4:30 p.m., Monday through Friday. All MPCA offices may be reached by calling

1-800-657-3864. /

DATED: May 30,2013

Don Smith, P.E., Manager

Air Quality Permits Section

Industrial Division