The D.C. Circuit held that EPA did not violate the CAA by modifying, without notice and comment, its prior understandings of how to measure a proposed transportation project’s impact on ambient levels of particulate matter. In 2006, EPA revised “hot spot" regulations for fine particulate matter....

A district court held an Alabama industrial park owner can't pursue claims against the federal government for damage to its property that occurred during a Superfund cleanup. As part of the cleanup, EPA disposed of, cut, severed, tore up from the ground, and removed roughly 1,400 feet of track owned...

A district court held that BLM violated the APA when it postponed compliance with Obama-era greenhouse gas emission rules. Several states and tribal citizen groups brought suit against BLM when it published a notice in the Federal Register postponing compliance dates for certain sections of the Wast...