Mealey's ( July 10, 2026, 8:28 AM EDT) -- NEW ORLEANS — The U.S. Environmental Protection Agency’s disapproval of Louisiana’s state implementation plan (SIP) for air quality remains in effect after a Fifth Circuit U.S. Court of Appeals panel denied petitions for rehearing and rehearing en banc filed by the state and the Louisiana Department of Environmental Quality (LDEQ) asking the court to vacate and remand the disapproval following the panel’s reversal of the disapproval of Texas’ similar plan in a substitute opinion....