company shall keep the usage rate records on file at the facility for a period of 5 years, in
a format acceptable to the department, and make them available to the department upon
request.
On and after December 31, 2016, the company shall compile hourly SO2 emission rate
calculations for the 5 reheat furnaces combined in pounds per hour, for each hour of
operation. Emission rates shall be determined using the method specified in subrule
(3)(g) of this rule. The company shall keep the records of the calculations on file at the
facility for a period of 5 years, in a format acceptable to the department, and make them
available to the department upon request.
(d) Not later than June 30, 2017, the company shall conduct SO2 emission stack
tests of the reheat furnaces, based on testing of a representative furnace. Not less than 30
days before testing, a complete stack test protocol shall be submitted to the department
for approval. The final plan must be approved by the department before testing.
Verification of emission rates includes the submittal of a complete report of the test
results to the department within 60 days following the last date of the test. The company
shall keep the records of the test on file at the facility for a period of 5 years, in a format
acceptable to the department, and make them available to the department upon request.
(e) On and after September 15, 2017, the company shall submit an excess
emission report in an acceptable format to the department semiannually. The report shall
be submitted by September 15 for the January 1 to June 30 reporting period, and by
March 15 for the July 1 to December 31 reporting period. The excess emission report
shall include the following information:
(A) A report of each exceedance above the SO2 limitation including the date, time,
magnitude, cause, and corrective actions for all occurrences during the reporting period.
(B) A report of all periods of fuel gas usage rate monitoring system downtime and
corrective action.
(C) If no SO2 limitation exceedance and no fuel gas usage rate monitoring system
downtime occurred during the reporting period, the company shall report that fact.
(3) All of the following apply to United States Steel, Great Lakes Works, Zug Island
boiler houses number 1 and 2:
The following limits shall be met on and after December 31, 2016:
The combined SO2 emission rate from the number 1 boiler house boilers 1 to 5 shall not
exceed 15 pounds per hour, based on a 1-hour average starting on the hour for each
clock-hour.
(ii) The combined SO2 emission rate from the number 2 boiler house boilers 1 to 5 shall
not exceed 21 pounds per hour, based on a 1-hour average starting on the hour for each
clock-hour.
(iii) The maximum hydrogen sulfide content of the blast furnace gas fired in the boilers
shall not exceed .0274 grains per dry standard cubic foot, based on a 1-hour average
starting on the hour for each clock-hour.
The type of fuels burned in the boilers shall be restricted to blast furnace gas, coke oven
gas, and natural gas.
On and after December 31, 2016, the company shall install, calibrate, maintain, and
operate in a manner approved by the department devices to separately monitor and record
the coke oven gas, blast furnace gas, and natural gas usage rates in cubic feet per hour for
the combined number 1 boiler house boilers and for the combined number 2 boiler house
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