ELR Citation: 53 ELR 20150
No(s). 22-9546 (10th Cir. Sep 18, 2023)

The Tenth Circuit, 2-1, granted in part an environmental group's challenge to EPA's approval of a Colorado SIP revision certifying that the state's existing, EPA-approved nonattainment new source review permitting program for the Denver Metro-North Front Range area met the requirements for attaining...