Data / Federal rules / 2025-06617

Air Plan Approval; Indiana; Indiana NOX Emissions Monitoring

The Environmental Protection Agency published this proposed rule in the Federal Register on April 21, 2025. Comments closed on May 21, 2025.

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What the agency says

The Environmental Protection Agency (EPA) is proposing to approve under the Clean Air Act (CAA) a request from the Indiana Department of Environmental Management (IDEM) to revise the Indiana State Implementation Plan (SIP) to incorporate revisions to nitrogen oxides (NO<INF>X</INF>) emissions monitoring, reporting and record keeping requirements for new and existing large non-Electric Generating Units (non-EGUs) affected by the NO<INF>X</INF> SIP Call. This SIP revision would approve monitoring, reporting, and record keeping requirements that are permissible as alternatives under Federal rules for these sources for purposes of the NO<INF>X</INF> SIP Call.

Key facts

Document number: 2025-06617
Type: Proposed rule
Action: Proposed rule
Agency: Environmental Protection Agency
Published: April 21, 2025
Comments due: May 21, 2025
Dates: Comments must be received on or before May 21, 2025.
Docket: EPA-R05-OAR-2021-0761; FRL-12258-01-R5
Code of Federal Regulations: 40 CFR 52
Topics: Air pollution control; Environmental protection; Incorporation by reference; Intergovernmental relations; Nitrogen dioxide; Ozone; Particulate matter; Reporting and recordkeeping requirements; Sulfur oxides
Pages: 6

The document on federalregister.gov PDF

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Everything from the Environmental Protection Agency · Rules on air pollution control · Rules on environmental protection · Rules on incorporation by reference · Published in April 2025

Read from the Federal Register API, last updated 2026-10-23. The document on federalregister.gov is the official record; dates and dockets can change through later corrections. Free to reuse with credit to SpecStream under CC BY 4.0.