The Environmental Protection Agency (EPA) is approving the Eagle River, Alaska (AK) limited maintenance plan (LMP) submitted on November 10, 2020, by the Alaska Department of Environmental Conservation (ADEC or ``the State''). This plan addresses the second 10-year maintenance period after redesignation for particulate matter with an aerodynamic diameter less than or equal to a nominal 10 micrometers (PM<INF>10</INF>). The plan relies upon control measures contained in the first 10-year maintenance plan and the determination that the Eagle River area currently monitors PM<INF>10</INF> levels well below the PM<INF>10</INF> National Ambient Air Quality Standard (NAAQS or ``the standard''). The EPA is approving Alaska's LMP as meeting Clean Air Act (CAA) requirements.