The EPA might have to enforce portions of Obama-era limits on climate-warming coolants if a federal appeals court finds that the agency overstepped in deciding to forgo implementing the rules, which were already undercut by a prior court decision.
Two of three judges—Judges David S. Tatel and Sri Srinivasan—on a panel of the U.S. Court of Appeals for the District of Columbia Circuit appeared skeptical of the Environmental Protection Agency’s April 2018 guidance declining to implement a pair of Obama-era rules restricting hydrofluorocarbons, or HFCs.
Those chemicals, typically used as refrigerants, have a global warming ...