EPA recently redesignated the Northern Wasatch Front and the Uinta Basin ozone nonattainment areas based on data demonstrating that the areas failed to meet the 2015 ozone National Ambient Air Quality Standard (NAAQS) by...more
On February 7, 2024, EPA released its final rule tightening the annual National Ambient Air Quality Standard (“NAAQS”) for fine particulate matter (“PM2.5”), from 12 µg/m3 to 9 µg/m3. EPA’s decision to drop the standard to...more
On January 6, 2023, EPA released a pre-publication version of its highly anticipated proposal to strengthen the National Ambient Air Quality Standard (“NAAQS”) for fine particulate matter or PM2.5, one of two classes of...more
EPA is poised to publish a final Federal Implementation Plan (FIP) for emissions from oil and natural gas sources on Indian country lands within the Uintah and Ouray Indian reservation in northeast Utah. EPA recently released...more