The Ninth Circuit ordered EPA to respond to a petition requesting that the Agency end the use of the pesticide tetrachlorvinphos (TCVP) in household pet products. An environmental group submitted an administrative petition to cancel the registration of TCVP in 2009, following a peer-reviewed study t...

The U.S. Supreme Court upheld an appellate court ruling that an oil refining company was responsible for $140 million in damages from a 2004 oil spill in the Delaware River. The owner of the vessel involved in the spill argued that the company it chartered to deliver crude oil from Venezuela to the ...

A district court denied summary judgment to environmental groups in a challenge to the U.S. Coast Guard's approval of a contingency plan for a Michigan oil pipeline. The groups argued that the plan failed to respond to a worst-case discharge, as required by the OPA, by failing to consider the need f...

A district court granted the U.S. Navy's motion to dismiss a lawsuit concerning the release of perfluorochemicals from naval facilities in eastern Pennsylvania. Families in neighborhoods near the facilities argued that the Navy improperly disposed of perfluorooctane sulfonate (PFOS) and perfluorooct...

A district court denied nonprofit groups' and EPA's cross-motions for summary judgment in a challenge to the Agency's denial of a petition to regulate the fluoridation of drinking water supplies under TSCA. The groups argued that the ingestion of fluoride posed an unreasonable risk of neurotoxic har...

A district court denied the U.S. Navy's motion to stay a lawsuit concerning the release of perfluorochemicals from naval facilities in eastern Pennsylvania. Families in neighborhoods near the facilities argued that the Navy improperly disposed of perfluorooctane sulfonate (PFOS) and perfluorooctanoi...

A district court denied EPA's motion to dismiss a challenge to its denial of a petition to revise reporting requirements for asbestos under the Chemical Data Reporting Rule. Health and environmental groups challenged EPA's denial of their petition under TSCA and the APA, arguing that the petition wa...

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...

A district court denied chemical manufacturing companies' motions to dismiss a lawsuit seeking industry funds to study the human health impacts of per- and polyfluoroalkyl substances (PFAS). An ex-firefighter argued that the companies' production of PFAS caused him to be exposed to the substances, a...

A California jury awarded over $2 billion in compensatory and punitive damages to two residents who claimed that the weedkiller Roundup caused their non-Hodgkin lymphoma. The jury found that the weedkiller's manufacturer was aware of the risks associated with its product and negligently failed to ad...