TABLE A: LIMITS AND OTHER REQUIREMENTS

United Taconite LLC - Fairlane Plant

13700113 - 005

Facility Name:

Permit Number:

A-51 08/19/10

Sulfuric Acid Mist Calculation and Recordkeeping - Rolling Average.

The Permittee shall calculate and record the daily tons of sulfuric acid mist

emissions and the 30-day rolling sum sulfuric acid mist emissions from EU 040 (SV

046 and SV 097) each day. All sulfuric acid mist emissions from EU 040 shall be

included in these calculations.

Prior to certification of MR 002 and MR 003, sulfuric acid mist emissions shall be

determined according to the calculation methods used in the permit application for

Air Emission Permit No. 13700113-005. These methods are found in the BAE.xls

(Excel) spreadsheet, tab [Table 3 SO2-SAM]. After certification of MR 002 and MR

003, emissions from EU 040/SV 046 will be determined from MR 002 and MR 003

as described in Appendix E.

Title I Condition: Recordkeeping associated with a limit

taken to avoid classification as a major modification

under 40 CFR Section 52.21 and Minn. R. 7007.3000;

Minn. R. 7007.0800, subp. 4 & 5

Recordkeeping.

Maintain records of the occurrence and duration of any startup, shutdown, or

malfunction of EU 040 including any malfunction of the air pollution control

equipment; or any periods during which a continuous monitoring system or

monitoring device is inoperative.

Minn. R. 7007.0800, subp. 4 & 5

Recordkeeping.

Maintain a file of all measurements, maintenance, reports and records for at least

five years.

Minn. R. 7007.0800, subp. 4 & 5

The Permittee shall monitor and record the type and quantity of each fuel entering

the furnace each hour in a form that enables the Permittee to convert the data to

the heat input (BTU) of each fuel type (solid, liquid, or gas) on an hourly basis.

Title I Condition: Monitoring associated with a limit

taken to avoid classification as a major modification

under 40 CFR Section 52.21 and Minn. R. 7007.3000;

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

subp. 4(B)

Fuel Sampling: The Permittee shall collect a solid fuel sample each weekday from

the pulverized fuel pipe. The Permittee shall form a weekly composite of all

samples collected in a given calendar week.

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

subp. 4(B)

Prior to the installation and certification of a continuous emissions monitor system

(CEMS) for SO2 for EU 040, the Permittee shall comply with the following

conditions:

Fuel Sulfur and BTU Content Monitoring: The Permittee shall analyze the weekly

fuel composite samples for sulfur content in weight percent and heating value in

BTU per pound, in accordance with current ASTM Methods.

Sulfur Dioxide Emissions Calculation: Within 21 days after the end of a calendar

week, the Permittee shall calculate the SO2 emissions rate in lbs/MMBtu from the

results of the weekly fuel composite analysis, and the Sulfur Dioxide control

efficiency of 25 percent or the value directly determined by recent performance

testing - whichever is lower in value. The Permittee shall maintain a record of the

analysis, calculations, and emission rate.

Minn. R. 7007.0800, subp. 2 and Minn. R. 7007.0800,

subp. 4(B)

Beginning with the certification of a continuous emissions monitoring system

(CEMS) for SO2 for EU 040, the Permittee shall comply with the following

conditions:

Fuel BTU Content Monitoring: The Permittee shall analyze the weekly fuel

composite samples for heating value in BTU per pound, in accordance with current

ASTM Methods.

Sulfur Dioxide Emissions Calculation (lb/MMBtu): Within 21 days after the end of a

calendar week, the Permittee shall calculate and record the SO2 emissions rate in

lbs/MMBtu for each 3-hour rolling period from the calendar week using the results

of the weekly fuel composite analysis and stack CEM measurements.

The Permittee shall also calculate and record the emission limit for each 3-hour

rolling period during the calendar week from the records of fuel inputs and fuel

energy content.

The Permittee shall maintain a record of the analysis, calculations, emission limit,

and emission rate.

Minn. R. 7007.0800, subp. 2 and Minn. R. 7007.0800,

subp. 4(B)

CONTROL EQUIPMENT MONITORING hdr

The Permittee shall operate and maintain the scrubber (CE 056) at any time that

the process equipment controlled by the scrubber (EU 040) is in operation. The

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

Title I Condition: To avoid classification as a major

modification under 40 CFR Section 52.21 and Minn. R.

7007.3000; Minn. R. 7011.0075, subp. 1
TABLE A: LIMITS AND OTHER REQUIREMENTS

United Taconite LLC - Fairlane Plant

13700113 - 005

Facility Name:

Permit Number:

A-58 08/19/10

Recordkeeping.

Maintain a file of all measurements, maintenance, reports and records for at least

five years.

Minn. R. 7007.0800, subp. 4 & 5

The Permittee shall monitor and record the type and quantity of each fuel entering

the furnace each hour in a form that enables the Permittee to convert the data to

the heat input (BTU) of each fuel type (solid, liquid, or gas) on an hourly basis.

Title I Condition: Recordkeeping associated with a limit

taken to avoid classification as a major modification

under 40 CFR Section 52.21 and Minn. R. 7007.3000;

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

subp. 4(B)

Fuel Sampling: The Permittee shall collect a solid fuel sample each weekday from

the pulverized fuel pipe. The Permittee shall form a weekly composite of all

samples collected in a given calendar week.

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

subp. 4(B)

Prior to the installation and certification of a continuous emissions monitor systems

(CEMS) for SO2 for EU 042, the Permittee shall comply with the following

conditions:

Fuel Sulfur and BTU Content Monitoring: The Permittee shall analyze the weekly

fuel composite samples for sulfur content in weight percent and heating value in

BTU per pound, in accordance with current ASTM Methods.

Sulfur Dioxide Emissions Calculation: Within 21 days after the end of a calendar

week, the Permittee shall calculate the SO2 emissions rate in lbs/MMBtu from the

results of the weekly fuel composite analysis, and the Sulfur Dioxide control

efficiency of 25 percent or the value directly determined by recent performance

testing - whichever is lower in value. The Permittee shall maintain a record of the

analysis, calculations, and emission rate.

Minn. R. 7007.0800, subp. 2 and Minn. R. 7007.0800,

subp. 4(B)

Beginning upon certification of a continuous emissions monitoring systems (CEMS)

for SO2 for EU 042, the Permittee shall comply with the following conditions:

Fuel BTU Content Monitoring: The Permittee shall analyze the weekly fuel

composite samples for heating value in BTU per pound, in accordance with current

ASTM Methods.

Sulfur Dioxide Emissions Calculation (lb/MMBtu): Within 21 days after the end of a

calendar week, the Permittee shall calculate and record the SO2 emissions rate in

lbs/MMBtu for each 3-hour rolling period from the calendar week using the results

of the weekly fuel composite analysis and stack CEM measurements.

The Permittee shall shall also calculate and record the emission limit for each

3-hour rolling period during the calendar week from the records of fuel inputs and

fuel energy content.

The Permittee shall maintain a record of the analysis, calculations, emission limit,

and emission rate.

Minn. R. 7007.0800, subp. 2 and Minn. R. 7007.0800,

subp. 4(B)

CONTROL EQUIPMENT MONITORING hdr

Process Monitoring: Check stack visible emissions (opacity) once daily using a

checklist in Appendix B.

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

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

The Permittee shall operate and maintain the scrubbers for EU 042 (CE 049 and

CE 050) at any time that the process equipment controlled by the scrubber (EU

042) is in operation. The Permittee shall record periods of non-operation of the

control equipment.

Title I Condition: To avoid classification as a major

modification under 40 CFR Section 52.21 and Minn. R.

7007.3000; Minn. R. 7011.0075, subp. 1

Corrective Actions: The Permittee shall take corrective action as soon as possible if

any of the following occur:

- the recorded water flow rate is outside the required operating range; or

- the recorded pressure drop is outside the required operating range; or

- the scrubber or any of its components are found during the inspections to need

repair.

Corrective actions shall return the pressure drop and/or water flow rate to within the

permitted range, and/or include completion of necessary repairs identified during

the inspection, as applicable. Corrective actions include, but are not limited to,

those outlined in the O & M Plan for the scrubber. The Permittee shall keep a

record of the type and date of any corrective action taken for the scrubber.

Minn. R. 7007.0800, subps. 4, 5, and 14

Gas Stream Pressure Drop: Monitor and record the daily average pressure drop

across each control device (CE 049 and CE 050).

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

Minn. R. 7007.0800, subp. 14;

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

Total Water Flow: Monitor and record when in operation the daily average scrubber

water flow rate across each control device (CE 049 and CE 050).

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

Minn. R. 7007.0800, subp. 14;

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