A district court dismissed environmental groups' NEPA and National Historic Preservation Act (NHPA) claims against BLM in connection with its approval of oil and gas drilling on public and tribal lands near Cacho Cultural National Historical Park.

A Colorado court, on motions for summary judgment, held that state and federal law preempt portions of a city ordinance concerning the regulation of oil and gas development within its boundaries. The provisions for minimum setbacks prohibit what state regulations would allow.

The Federal Circuit held that the U.S. government is not liable for flood damages that property owners in the New Orleans area incurred following Hurricane Katrina.

A Wisconsin appellate court held that an insurer had no duty to defend a manufacturing company for various environmental cleanup costs.