Lion News

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11/13/2020

EPA Abandons Once-In-Always-In Clean Air Act Policy

Update 11/19/20: EPA's Final Rule to amend the NESHAP General Provisions and allow major sources of hazardous air pollutants (HAP) to be reclassified as area sources takes effect on January 19, 2021.

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02/01/2018

EPA Eliminates “Once-in-Always-In” Clean Air Act Policy

US EPA last week released guidance to reverse a long-held Clean Air Act policy that enabled the Agency to regulate sources of hazardous air pollutants (HAPs) as “major sources” even if the facility no longer had the potential to emit pollutants above the major source threshold.    

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