The Ninth Circuit dismissed in part, granted in part, and denied in part petitions to review EPA's 2017 Risk Evaluation Rule, which established a process for evaluating the risks of chemical substances. Environmental and health groups argued the rule violated TSCA's requirement that EPA evaluate ris...

The D.C. Circuit upheld EPA's decision not to issue financial responsibility requirements for the hard-rock mining industry. Environmental groups argued the decision violated CERCLA by wrongly interpreting the term "risk" in the operative provisions as limited to the risk of taxpayer-funded response...

The D.C. Circuit upheld an EPA rule that classified as "recycled" certain hazardous material sent to a third-party reclamation facility and thus exempted the material from RCRA regulations governing discarded waste. Environmental groups argued the rule violated RCRA because material that a generator...