Under the Clean Air Act (CAA), the Environmental Protection Agency (EPA) is granting a request by the California Air Resources Board (CARB) to reclassify the Eastern Kern, California (``Eastern Kern'') ozone nonattainment area from ``Serious'' to ``Severe'' for the 2008 ozone national ambient air quality standard (NAAQS).

The Environmental Protection Agency (EPA) is approving a submission by the State of Tennessee, through the Tennessee Department of Environment and Conservation (TDEC), on September 29, 2020, to redesignate the Sumner County, Tennessee, unclassifiable area (hereinafter referred to as the ``Sumner County Area'' or ``Area'') to attainment/unclassifiable for the 2010 1-hour primary sulfur dioxide (SO<INF>2</INF>) national ambient air quality standard (hereinafter referred to as the 2010 SO<INF>2</INF> 1-hour NAAQS).

The Environmental Protection Agency (EPA) is approving the request by the State of Utah to redesignate the Logan, Utah-Idaho (UT- ID) nonattainment area (NAA) (Logan NAA) to attainment status for the 2006 24-hour National Ambient Air Quality Standards (NAAQS) for particulate matter with an aerodynamic diameter less than or equal to a nominal 2.5 microns (PM<INF>2.5</INF>), and approving related State Implementation Plan (SIP) revisions submitted by the State of Utah on November 5, 2019, and January 13, 2020.

On November 6, 2020, the Environmental Protection Agency (EPA) published a notice of proposed rulemaking to approve redesignation of the Salt Lake City, Utah and Provo, Utah nonattainment areas (NAAs) to attainment for the 2006 24-hour fine particulate matter with an aerodynamic diameter less than or equal to a nominal 2.5 microns (PM<INF>2.5</INF>) National Ambient Air Quality Standard (NAAQS), and also acted on multiple related State Implementation Plan (SIP) submissions.