Published on: 2023-21866. Final rule. 2023-21866. Air Plan Approval and Air Quality Designation; KY; Redesignation of the Northern Kentucky Portion of the Cincinnati, OH-KY 2015 8-Hour Ozone Nonattainment Area to Attainment
Published on: 2023-21700. Final rule. 2023-21700. Air Plan Approval; New Jersey; Redesignation of the Warren County 1971 Sulfur Dioxide Nonattainment Area to Attainment and Approval of the Area's Maintenance Plan
Published on: 2023-15435. Final rule. 2023-15435. Air Approval and Promulgation of Implementation Plans; Montana; Libby 1997 Annual PM2.5 Limited Maintenance Plan and Redesignation Request
Published on: 2023-04965. Final rule. 2023-04965. Air Quality Redesignation for the 2008 Lead National Ambient Air Quality Standards; Canton, Ohio; Stark County, Ohio
Published on: 2023-04736. Final rule. 2023-04736. Designation of Areas for Air Quality Planning Purposes; California; Coachella Valley Ozone Nonattainment Area; Reclassification to Extreme
Published on: 2023-01936. Final rule. 2023-01936. Finding of Failure To Attain and Reclassification of the Detroit Area as Moderate for the 2015 Ozone National Ambient Air Quality Standards
Published on: 2022-28278. Final rule. 2022-28278. Determination of Attainment by the Attainment Date, Clean Data Determination, and Approval of Base Year Emissions Inventory for the Imperial County, California Nonattainment Area for the 2012 Annual Fine Particulate Matter NAAQS