The Environmental Protection Agency (EPA) is approving the State Implementation Plan (SIP) revisions submitted by Idaho on June 5, 2019 and May 27, 2020. The submitted revisions update the incorporation by reference of specific Federal requirements and clarify source permitting requirements. The EPA finds that the changes are consistent with Clean Air Act requirements.

The Environmental Protection Agency (EPA) has determined that the Salt Lake City, Utah and Provo, Utah Serious nonattainment areas (NAAs) attained the 2006 24-hour fine particulate matter (PM<INF>2.5</INF>) National Ambient Air Quality Standards (NAAQS) by the December 31, 2019 ``Serious'' area attainment date. The determination is based on quality-assured, quality-controlled and certified ambient air quality monitoring data from 2017 through 2019, available in the EPA's Air Quality System (AQS) database.

The Environmental Protection Agency (EPA) is taking final action to find that five states failed to submit State Implementation Plan (SIP) revisions required by the Clean Air Act (CAA) in a timely manner to address reasonably available control technology (RACT) requirements associated with the 2016 Oil and Natural Gas Industry Control Techniques Guidelines (CTG) for reducing volatile organic compounds (VOC) in certain nonattainment areas for the 2008 ozone National Ambient Air Quality Standards (NAAQS) and in states in the ozone transport region (OTR).

The Environmental Protection Agency (EPA) is taking final action to find that five states failed to submit State Implementation Plan (SIP) revisions required by the Clean Air Act (CAA) in a timely manner to address reasonably available control technology (RACT) requirements associated with the 2016 Oil and Natural Gas Industry Control Techniques Guidelines (CTG) for reducing volatile organic compounds (VOC) in certain nonattainment areas for the 2008 ozone National Ambient Air Quality Standards (NAAQS) and in states in the ozone transport region (OTR).