A California appellate court held that the Office of Environmental Health Hazard Assessment (OEHHA) may add chemicals to California's Proposition 65 list using the methodology set forth in Cal. Health & Safety Code §25249.8(a). Proposition 65 requires the government to publish a list of ch...

The Seventh Circuit denied environmental groups' petitions challenging EPA's approval of revisions to Wisconsin's new source review program. In 2002, EPA changed the rules that determine when polluters need permits in order to modify existing facilities—and, if they need permits, what restrictions...

The First Circuit upheld the dismissal of a developer's federal takings claim against two state agencies for restricting its development of a coastal residential subdivision in Rhode Island. In Williamson County Regional Planning Commission v. Hamilton Bank of Johnson City, 473 U.S. 172 (19...

The Ninth Circuit held that the CAA does not preempt a local air district's adoption and enforcement of rules regulating air emissions from diesel-powered engines. CAA §209(e) expressly prohibits states from setting "standards or other requirements relating to the control of emissions" from no...

A California appellate court held that a city's revised environmental impact report (EIR) for a proposed development project along an estuary complies with the California Environmental Quality Act. The project would develop approximately 64 acres, converting a maritime and industrial area into ...

A Michigan appellate court reversed the dismissal of a property owner's trespass claim against a prior owner of the site, but upheld the dismissal of the remaining tort and state-law claims stemming from the discovery of USTs on the site. The owner filed suit against two prior owners, arguing that b...

A California court ordered the California Air Resources Board to set aside its "functional equivalent document" and scoping plan to reduce greenhouse gases as it relates to cap and trade. The court ruled that the board inadequately described and analyzed project alternatives in violation of the...

A Washington appellate court held that the former owners of contaminated property may be held liable under the state's Model Toxics Control Act (MTCA). Fifteen years after the former owner sold the property to a port, the port notified the former owners that they were potentially liable part...

A California appellate court held that a city's approval of a "term sheet" setting forth the basic plans for building a stadium for the San Francisco 49ers does not constitute a project or project approval under the California Environmental Quality Act. The current lessee of the site filed a pe...

The U.S. Supreme Court held that Wyoming did not violate the Yellowstone River Compact by allowing its pre-1950 water appropriators to increase their net water consumption by improving the efficiency of their irrigation systems. The compact protects beneficial use water rights in existence prio...