The Environmental Protection Agency (EPA) is determining that the Imperial County, California fine particulate matter (PM<INF>2.5</INF>) nonattainment area (``Imperial PM<INF>2.5</INF> nonattainment area'') attained the 2012 annual PM<INF>2.5</INF> national ambient air quality standards (NAAQS or ``standard'') by its December 31, 2021 ``Moderate'' area attainment date. This determination is based upon ambient air quality monitoring data from 2019 through 2021. We are also making a clean data determination (CDD) based on our determination that preliminary air quality monitoring data from 2022 indicate the Imperial PM<INF>2.5</INF> nonattainment area continues to attain the 2012 annual PM<INF>2.5</INF> NAAQS. As a result of this CDD, certain Clean Air Act (CAA) requirements that apply to the Imperial County Air Pollution Control District (ICAPCD or ``District'') are suspended for so long as the area continues to meet the 2012 annual PM<INF>2.5</INF> NAAQS. The area remains nonattainment for the 2012 annual PM<INF>2.5</INF> NAAQS until the area is redesignated to attainment. The EPA is also approving a revision to California's state implementation plan (SIP) consisting of the 2012 base year emissions inventory for the Imperial PM<INF>2.5</INF> nonattainment area, submitted by the California Air Resources Board (CARB or ``State'') on July 18, 2018.