Wilderness areas

Air Plan Approval and Air Quality Designation; GA; Redesignation of the Atlanta, Georgia 2015 8-Hour Ozone Nonattainment Area to Attainment

The Environmental Protection Agency (EPA) is proposing to approve changes to the Georgia State Implementation Plan (SIP) submitted on behalf of the State of Georgia, through the Georgia Environmental Protection Division (GA EPD) of the Department of Natural Resources, on February 28, 2022, through a letter dated February 25, 2022.

Publication Date: 
Friday, August 26, 2022 - 4:00am

Air Plan Approval; OR; Oakridge PM2.5

The Environmental Protection Agency (EPA) is redesignating the Oakridge, Oregon nonattainment area to attainment for the 2006 24-hour fine particulate matter (PM<INF>2.5</INF>) National Ambient Air Quality Standard (NAAQS). The EPA is also approving a maintenance plan for the area that demonstrates continued compliance with the PM<INF>2.5</INF> NAAQS through the year 2035, which Oregon submitted along with the redesignation request for inclusion into the Oregon State Implementation Plan (SIP).

Publication Date: 
Monday, August 22, 2022 - 4:00am

Air Plan Approval; OR; Oakridge PM10

The Environmental Protection Agency (EPA) is redesignating the Oakridge, Oregon nonattainment area to attainment for the 1987 National Ambient Air Quality Standard for particulate matter of 10 microns or less (PM<INF>10</INF> NAAQS). The EPA is also approving a maintenance plan for the area that demonstrates continued compliance with the PM<INF>10</INF> NAAQS through the year 2035, which Oregon submitted, along with the redesignation request, for inclusion into the Oregon State Implementation Plan (SIP).

Publication Date: 
Monday, August 22, 2022 - 4:00am

Maintenance Plan and Redesignation Request; Nogales PM2.5

The Environmental Protection Agency (EPA) is taking final action to approve the ``FINAL SIP Revision: Nogales PM<INF>2.5</INF> Maintenance Plan and Redesignation Request (2006 Fine Particulate NAAQS)'' (``Nogales Maintenance Plan'' or ``Plan'') as a revision to the state implementation plan (SIP) for the State of Arizona. The Nogales Maintenance Plan includes, among other elements, an emissions inventory consistent with attainment, a maintenance demonstration, contingency provisions, and a motor vehicle emissions budget for the ten-year maintenance period.

Publication Date: 
Monday, August 15, 2022 - 4:00am

Air Plan Approval; Indiana; Redesignation of the Indiana Portion of the Louisville, Indiana-Kentucky Area to Attainment of the 2015 Ozone Standards

The Environmental Protection Agency (EPA) finds that the Indiana portion of the Louisville, Indiana-Kentucky area (Area) is attaining the 2015 primary and secondary ozone National Ambient Air Quality Standards (NAAQS), and acts in accordance with a request from the Indiana Department of Environmental Management (IDEM) to redesignate the Indiana portion of the area to attainment for the 2015 ozone NAAQS because the request meets the statutory requirements for redesignation under the Clean Air Act (CAA).

Publication Date: 
Tuesday, July 5, 2022 - 4:00am

Air Plan Approval; Ohio; Redesignation of the Ohio Portion of the Cincinnati, Ohio-Kentucky Area to Attainment of the 2015 Ozone Standard

The Environmental Protection Agency (EPA) finds that the Cincinnati, Ohio-Kentucky area (Area) is attaining the 2015 ozone National Ambient Air Quality Standard (NAAQS or standard) and is acting in accordance with a request from the Ohio Environmental Protection Agency (OEPA) to redesignate the Ohio portion of the Area to attainment for the 2015 ozone NAAQS because the request meets the statutory requirements for redesignation under the Clean Air Act (CAA).

Publication Date: 
Thursday, June 9, 2022 - 4:00am

Approval and Promulgation of Implementation Plans; Montana; Thompson Falls PM10

The Environmental Protection Agency (EPA) is approving the Limited Maintenance Plan (LMP) submitted by the State of Montana to EPA on November 4, 2021, for the Thompson Falls Moderate nonattainment area (NAA) for particulate matter with an aerodynamic diameter less than or equal to a nominal 10 micrometers (PM<INF>10</INF>) and concurrently redesignating the NAA to attainment for the 24-hour PM<INF>10</INF> National Ambient Air Quality Standard (NAAQS).

Publication Date: 
Wednesday, June 8, 2022 - 4:00am

Approval and Promulgation of Implementation Plans; Montana; Whitefish PM10

The Environmental Protection Agency (EPA) is approving the Limited Maintenance Plan (LMP) submitted by the State of Montana to EPA on August 6, 2021, for the Whitefish Moderate nonattainment area (NAA) for particulate matter with an aerodynamic diameter less than or equal to a nominal 10 micrometers (PM<INF>10</INF>) and concurrently redesignating the NAA to attainment for the 24-hour PM<INF>10</INF> National Ambient Air Quality Standard (NAAQS).

Publication Date: 
Wednesday, June 8, 2022 - 4:00am

Air Plan Approval; Indiana; Redesignation of the Indiana Portion of the Chicago-Naperville Area to Attainment of the 2008 Ozone Standard, NOX

The Environmental Protection Agency (EPA) finds that the Indiana portion of the Chicago-Naperville, IL-IN-WI area (Chicago area) is attaining the 2008 ozone National Ambient Air Quality Standard (NAAQS or standard). In addition, in response to a December 6, 2021, request from the Indiana Department of Environmental Management (Indiana or the State), EPA is redesignating the Indiana portion of the Chicago area to attainment for the 2008 ozone NAAQS, because the State has met the statutory requirements for redesignation under the Clean Air Act (CAA).

Publication Date: 
Friday, May 20, 2022 - 4:00am

Air Plan Approval; Illinois; Redesignation of the Illinois Portion of the Chicago-Naperville, Illinois-Indiana-Wisconsin Area to Attainment of the 2008 Ozone Standard

The Environmental Protection Agency (EPA) finds that the Illinois portion of the Chicago-Naperville, IL-IN-WI area (Chicago area) is attaining the 2008 ozone National Ambient Air Quality Standard (NAAQS or standard) and is acting in accordance with a January 25, 2022, request from Illinois to redesignate the Illinois portion of the Chicago area to attainment for the 2008 ozone NAAQS because the request meets the statutory requirements for redesignation under the Clean Air Act (CAA).

Publication Date: 
Friday, May 20, 2022 - 4:00am

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