The Ninth Circuit held that EPA violated the CAA when it approved California SIPs concerning NAAQS for ozone and fine particulate matter in the San Joaquin Valley. The SIPs relied on state-adopted mobile emissions standards to achieve their emission reduction goals. But the SIPs approved by EPA did ...

A district court held that OSM violated NEPA when it approved the expansion of two Colorado mines. The court agreed with environmental groups that OSM violated NEPA by failing to seek public involvement during the review process and by failing to publish notice of the resulting EAs and FONSIs. OSM a...

The Ninth Circuit denied community groups' petition for review challenging EPA's approval of revisions to California's SIP concerning air emissions from pesticides, known as the "pesticide element." The revisions related to the reduction of volatile organic compounds in the San Joaquin and Ventura a...