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Energy & environment · 04/02/1994Updated: 10/15/2026 · 1 min read

EPA Proposes Conditional Approval of Missouri's Clean Air Act Plan for Oxides of Nitrogen

Summary

The U.S. Environmental Protection Agency (EPA) proposes to conditionally approve Missouri's revisions to its State Implementation Plan for ozone, which includes a commitment to adopt rules for reasonably available control technology for oxides of nitrogen in the St. Louis metropolitan area.

Original source language: Federal Register — Environmental Protection AgencyOpen original release →

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Energy & environment · 5/29/2026

Air Plan Approval; New York; Athens Generating Plant

The Environmental Protection Agency (EPA) is approving a revision to the State of New York's State Implementation Plan (SIP) for the Athens Generating Plant, implementing Reasonably Available Control Technology (RACT) for Oxides of Nitrogen (NO X ) emissions.

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Energy & environment · 5/29/2026

EPA Approves Revisions to California Air Pollution Control Districts

The Environmental Protection Agency (EPA) has taken final action to approve revisions to the San Joaquin Valley Unified Air Pollution Control District, Ventura County Air Pollution Control District, and South Coast Air Quality Management District portions of the California State Implementation Plan, regulating emissions of volatile organic compounds from crude oil and natural gas production facilities.

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Energy & environment · 5/28/2026

Air Plan Approval; SC; Department Name Change

The Environmental Protection Agency (EPA) is proposing to approve a State Implementation Plan (SIP) revision submitted by the State of South Carolina on July 23, 2025, to update department references following a restructuring of the South Carolina Department of Health and Environmental Control.

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