The Ninth Circuit held that EPA did not act arbitrarily and capriciously when it disapproved in part Arizona's regional haze SIP and issued a replacement federal implementation plan (FIP) in place of the disapproved SIP elements. First, EPA did not act arbitrarily and capriciously when it disapprove...

The Washington Supreme Court held that a local initiative to create a "Community Bill of Rights" which, among other things, would give the Spokane River its own water rights, including the rights to sustainable recharge, sufficient flows to support native fish, and clean water, may not be placed on ...

A district court held that environmental and animal rights groups may challenge the constitutionality of two trespass statutes passed by the Wyoming legislature in 2015. Under the statutes—one imposing criminal liability and the other imposing civil—a person will be held liable if he or she: (1)...

The U.S. Supreme Court upheld FERC's "demand-response" rule under which operators of wholesale electricity markets, in specified circumstances, must pay the same price to providers for conserving energy as to generators for producing it. During peak periods, electricity rates increase dramatically, ...