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EPA Finalizes Rule Removing Affirmative Defense for SO2 Exceedances in Montana
January 18, 2025
WASHINGTON, Jan. 18 (TNSFR) -- The Environmental Protection Agency (EPA) has finalized a revision to the Federal Implementation Plan (FIP) regulating sulfur dioxide (SO2) emissions from four sources located in Billings and Laurel, Montana.

This action, which revises the 2008 Billings/Laurel SO2 FIP, removes a provision that allowed an affirmative defense for exceedances of flare emission limits during malfunctions, startups, and shutdowns. The EPA's decision aligns with the req . . .

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