2024-20598. Air Plan Approval; Pennsylvania; Attainment Plan for the Indiana Nonattainment Area for the 2010 1-Hour Sulfur Dioxide National Ambient Air Quality Standard

Name of source	Permit No.	County	State effective date	EPA approval date	Additional explanation/§ 52.2063 citation
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Keystone Generating Station	Consent Order and Agreement	Armstrong	08/15/23	9/13/2024, [INSERT Federal Register CITATION]	For Source IDs 031 and 032: Combined SO 2 emission limit; CEMS monitoring; definition of “24-hour block”; Quarterly emission reporting requirement; and reporting of hourly SO 2 lbs/hr emission averages.
Conemaugh Generating Station	Consent Order and Agreement	Indiana	08/15/23	9/13/2024, [INSERT Federal Register CITATION]	For Source IDs 031 and 032: Combined SO 2 emission limit; CEMS monitoring; definition of “3-hour block”; Quarterly emission reporting requirement; and reporting of hourly SO 2 lbs/hr emission averages.
Seward Generating Station	Consent Order and Agreement	Indiana	08/17/23	9/13/2024, [INSERT Federal Register CITATION]	For Source IDs 034 and 035: Combined SO 2 emission limit; CEMS monitoring; definition of “operating day”; reporting of hourly SO 2 lbs/hr emission rate; injection of limestone during initial firing; and quarterly submission of “Hourly Injection Reports.”

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Name of non-regulatory SIP revision	Applicable geographic area	State submittal date	EPA approval date	Additional explanation
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Attainment Plan for the Indiana, Pennsylvania Nonattainment Area for the 2010 Sulfur Dioxide Primary National Ambient Air Quality Standard	Indiana County and portions of Armstrong County (Plumcreek Township, South Bend Township, and Elderton Borough)	10/12/23	9/13/2024, [INSERT Federal Register CITATION]	52.2033(g).