Indiana Administrative Code
Title 326 - AIR POLLUTION CONTROL DIVISION
Article 7 - SULFUR DIOXIDE RULES
Rule 4 - Emission Limitations and Requirements by County
Section 4-5 - LaPorte County sulfur dioxide emission limitations
Current through March 20, 2024
Authority: IC 13-1-1-4; IC 13-7-7
Affected: IC 13-1-1; IC 13-7
Sec. 5.
The following sources and facilities located in LaPorte County shall comply with the sulfur dioxide emission limitations in pounds per million Btu and other requirements:
| Source | Facility Description | Emission Limitations |
| (1) Indiana State | 3 Coal Boilers | 5.12 |
| Prison | 1 Oil Boiler | 1.60 |
| (2) Westville Correctional Center | 3 Coal Boilers | 6.00 |
| (3) Allis Chalmers | 3 Oil Boilers | 1.60 |
| (4) Northern | Unit 12 | 6.0 |
| Indiana Public Service Company | Units 4, 5, and 6: If only one | 2.2 |
| (NIPSCo) Michigan City Plant | (1) unit is in operation | |
| If two (2) units ar in operation If three (3) units are in operation | e1.11 each 0.74 each |
(A) A log of hourly operating status for Units 4, 5, and 6 shall be maintained and made available to the department upon request. A summary indicating which boilers were in service each day of a calendar quarter shall be submitted to the department on a quarterly basis. In addition, records of the daily average sulfur content and sulfur dioxide emission rate for each day in which more than one (1) of Units 4, 5, and 6 were in operation shall be submitted to the department quarterly.
(B) For the purposes of 326 IAC 7-2-1(c)(1), during thirty (30) day periods in which NIPSCo relies on more than one (1) set of limits contained in this subdivision, a separate thirty (30) day rolling weighted average for each set of limits shall be determined. Each thirty (30) day rolling weighted average shall be based on data from the previous thirty (30) operational days within the last ninety (90) days for that set of limits. If NIPSCo does not operate thirty (30) days under any one (1) set of limits within the last ninety (90) days, the rolling weighted average shall be based on all operational days within the last ninety (90) days for that set of limits.
(C) For periods when natural gas is the only fuel being burned in Units 4, 5, or 6, the reporting required in clauses (A) and (B) shall be satisfied by indicating that natural gas was the only fuel burned. No reporting of sulfur dioxide emission rates is necessary for these periods.
