A district court held that EPA does not have a mandatory duty to review and, if necessary, promulgate new PSD rules for ozone simply because the NAAQS for ozone has been revised. The history of the CAA and its numerous amendments unambiguously demonstrates that Congress differentiated duties ste...

A district court held that an environmental group may go forward with its CAA citizen suit against EPA for failing to promulgate by November 15, 2000, regulations to reduce hazardous air pollutant emissions created during the manufacturing of brick and structural clay products. EPA filed a motio...

The Fifth Circuit vacated EPA's disapproval of three Texas regulations that provide for a standardized permit for minor new source review (NSR) pollution control projects that reduce or maintain current emissions rates. EPA had no legal basis on which to disapprove the permit. EPA used Texas law...