( November 7, 2022, 9:40 AM EST) -- DENVER — The Center for Biological Diversity (CBD) filed a brief in the 10th Circuit U.S. Court of Appeals seeking review of the U.S. Environmental Protection Agency’s approval of air quality standards for the Denver Metro Area that were submitted by the Colorado Department of Public Health (CDPH) on grounds that they failed to address the effects of hydraulic fracturing emissions....