A U.S. appeals court judge chided the Environmental Protection Agency for failing to obey its earlier order in an opinion published Tuesday.

“Notwithstanding Congress’s mandate and our order, EPA has failed to make the required determination,” wrote Circuit Judge Patricia Millett of the U.S. Court of Appeals for the District of Columbia circuit in a scathing grant of writ of mandamus after several environmental groups challenged the lack of impact determination on a now-long-used citrus tree pesticide.