The Ninth Circuit denied petitions for review challenging EPA's promulgation of 40 C.F.R.

The Ninth Circuit denied a petition for review challenging EPA's approval of a revision to California's SIP that authorized the San Joaquin Valley air pollution control district to impose fees on mobile sources of pollution—primarily motor vehicles—as an alternative to the fees previous

The U.S. Supreme Court held that a USDA marketing order under the Agricultural Marketing Agreement Act of 1937 requiring raisin producers to participate in a raisin reserve program violates the Fifth Amendment's prohibition against taking property without just compensation.

The Ninth Circuit held that the U.S. Forest Service violated NEPA and other environmental safeguards when it designated over 2 million acres of public land within the Beaverhead-Deerlodge National Forest for use by snowmobiles and other winter motorized vehicles.

A district court held that the Federal Highway Administration's (FHwA's) record of decision (ROD) and EIS for a proposed tollroad project between Indiana and Illinois violated NEPA.

A district court dismissed environmental groups' CWA citizen suit against EPA for failing to respond in writing to their administrative petition seeking withdrawal of West Virginia's NPDES permit program, but held that the groups may go forward with their claim that the Agency's fa

The Ninth Circuit upheld a 2010 FWS rule designating critical habitat for the threatened Santa Ana sucker, a small freshwater fish native to several California rivers and streams.