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The End of Chevron Deference Could Spell Trouble for EPA’s PFAS “Hazardous Substance” Rule

A recent Supreme Court ruling could further jeopardize EPA’s PFAS hazardous substance designation, as the agency is attempting to advance a novel use of delegated legislative authority to further regulate PFAS chemicals. On June 28, the Supreme Court issued its opinion in Loper Bright Enterprises v. Raimondo, 603 U.S. ____…