A district court held that a property owner that filed a RCRA, CAA, and CWA citizen suit against a mine may not intervene in the United States' and Missouri's enforcement action against the same mine for the same violations.

A district court dismissed a property owner's negligence and mutual mistake claims against the former owner, as well as its request to rescind the purchase agreement, due to contamination.

A bankruptcy court held that a property owner's CERCLA and state environmental law claims against the prior property owner are not "core" claims and, thus, fall outside the jurisdiction of the owner's Chapter 11 bankruptcy proceedings.

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.

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.