A Minnesota appellate court held that the state environmental agency did not err in certifying under CWA §401 EPA's proposed NPDES vessel general permit, which allows shipping vessels in Lake Superior to discharge ballast water in state waters. Nonprofit groups argued that the agency applied an inc...

A California appellate court affirmed in part and reversed in part a lower court decision approving an agreement between landowners, the Santa Maria Valley Water Conservation District, and local cities and water companies in a water rights dispute over the groundwater contained in the Santa Maria Va...

The D.C. Circuit held that EPA's determination that it completed sufficient standards to meet CAA §112(c)(6)'s 90% requirement for hazardous air pollutants is a legislative rulemaking subject to APA notice-and-comment requirements. EPA's determination, having declared the end not only of its multi-...

The D.C. Circuit upheld an EPA rule that added the gold mine ore processing and production area source category to the list of source categories to be regulated under CAA §112(c)(6). CAA §112(c)(6) requires action by EPA on seven bioaccumulative hazardous air pollutants (HAPs), including mercury, ...