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The Environmental Protection Agency is publishing a routine update to the federal record of Idaho’s State Implementation Plan, or SIP. This action formally incorporates by reference specific Idaho regulations that have already been approved and are in effect as of January 6, 2026. It also corrects a minor typographical error from a previous approval regarding a permit condition for an industrial facility in Soda Springs.

Why it matters: This action ensures that the federal record accurately reflects Idaho’s current air pollution control rules. For regulators and legal professionals, it provides a single, corrected reference point for enforcement and compliance. For the general public, it confirms that the state’s approved plan is up to date, though it does not change any actual emissions standards or operational requirements for businesses.

Who it affects

  • Idaho regulatory agencies and air quality officials

This is a final rule published by the Environmental Protection Agency in the Federal Register; readers should verify the original document for full regulatory text before relying on it.

Agency: Environmental Protection Agency
Source: Federal Register — read the official document

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