In Remand Rule, EPA Tightens Boiler MACT With Reliance On ‘Co-Benefits’

In response to a federal appeals court remand, EPA is proposing to tighten its maximum achievable control technology (MACT) air toxics limits for 28 types of boilers while weakening limits for six other types, relying in part on counting the “co-benefits” of the rule reducing air pollutants not directly regulated by the proposal. The agency’s reliance on counting the co-benefits of cutting pollutants not targeted by the rule to help justify it appears at odds with the Trump administration’s plan...