TABLE A: LIMITS AND OTHER REQUIREMENTS

United Taconite LLC - Fairlane Plant

13700113 - 005

Facility Name:

Permit Number:

A-4 08/19/10

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

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

Minn. R. ch. 7017

Performance Test Notifications and Submittals:

Performance Tests are due as outlined in Table A of the permit.

See Table B for additional testing requirements.

Performance Test Notification (written): due 30 days before each Performance Test

Performance Test Plan: due 30 days before each Performance Test

Performance Test Pre-test Meeting: due 7 days before each Performance Test

Performance Test Report: due 45 days after each Performance Test

Performance Test Report - Microfiche Copy: due 105 days after each Performance

Test

The Notification, Test Plan, and Test Report may be submitted in alternative format

as allowed by Minn. R. 7017.2018.

Minn. R. 7017.2018; Minn. R. 7017.2030, subps. 1-4,

Minn. R. 7017.2035, subps. 1-2

Performance Tests:

A) Performance testing for Line 1 (specifically, EU037-EU041 and the associated

control equipment and stacks) shall be tested at a green ball feed rate of greater

than or equal to 250 long tons per hour.

B) Performance testing for Line 2 (specifically, EU033-EU036 and EU042 and the

associated control equipment and stacks) shall be tested at a green ball feed rate

of greater than or equal to 630 long tons per hour.

C) All other emission units and their associated control equipment and stacks shall

be tested at greater than or equal to 90% of the emission units rated capacity. If a

performance test is conducted at less than the applicable minimum rate given

above, the Permittee shall be given the opportunity to retest within 90 days of the

subject test before process limits can be applied as specified in Minn. R.

7017.2025, subp. 3.

Minn. R. 7017.2025

MONITORING REQUIREMENTS hdr

Monitoring Equipment Installation: Install monitoring equipment for air pollution

control devices within 180 days of permit issuance. (Monitoring equipment, if not

already existing, must be installed within this time period to monitor surrogate

parameters such as "Gas Stream Pressure Drop," "Water Flow Rate," and/or "Total

Water Pressure," which are listed in Table A for specific Groups and Emission

Units.)

Minn. R. 7007.0800 subp. 4(D)

Monitoring Equipment Debugging, Troubleshooting, and Establishment of

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

needed repairs of all monitoring equipment.

Minn. R. 7007.0800 subp. 4(D)

Monitoring Equipment Calibration: The Permittee shall calibrate all required

monitoring equipment at least once every 12 months (any requirements applying to

continuous emission monitors are listed separately in this permit).

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

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

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

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

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

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

shutdown or checks of the monitoring system.

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

Changing operating parameters:

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

issuance) apply until superseded as stated in the MPCA's Notice of Compliance

letter granting preliminary approval. Preliminary approval is based on formal review

of a subsequent performance test on the same unit as specified by Minn. R.

7017.2025, subp. 3. The limit is final upon issuance of a permit amendment

incorporating the change.

Minn. R. 7017.2025, subp. 3

MERCURY REDUCTION REQUIREMENTS hdr

(A) Applicable mercury requirements following issuance of Air Emission Permit No.

13700113-005 prior to receiving MPCA approval of an alternative mercury

reduction plan.

The following permit conditions apply prior to the MPCA's approval of alternative

removal rates of scrubber solids to ensure no net increase of mercury emissions.

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