WASHINGTON, July 31 (TNSFR) -- The U.S. Environmental Protection Agency has issued a final rule updating the materials incorporated by reference into the Rhode Island State Implementation Plan (SIP), revising the federal record to reflect state air quality regulations and source-specific orders that have already received EPA approval.

The administrative action took effect on July 31, 2026, and updates the SIP compilation through Dec. 22, 2025.

The rule does not establi . . .

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