National parks

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

Air Plan Approval; OR; Oakridge PM10

The Environmental Protection Agency (EPA) proposes to redesignate the Oakridge, Oregon nonattainment area (Oakridge NAA or Oakridge area) to attainment for the 1987 National Ambient Air Quality Standard for particulate matter of 10 microns or less (PM<INF>10</INF> NAAQS).

Publication Date: 
Monday, May 9, 2022 - 4:00am

Air Plan Approval; OR; Oakridge PM2.5

The Environmental Protection Agency (EPA) proposes to redesignate the Oakridge, Oregon nonattainment area (Oakridge NAA or Oakridge area) to attainment for the 2006 24-hour fine particulate matter (PM<INF>2.5</INF>) National Ambient Air Quality Standard (NAAQS).

Publication Date: 
Thursday, May 5, 2022 - 4:00am

Air Plan Approval; Wisconsin; Redesignation of the Revised Door County (Partial) Area to Attainment of the 2015 Ozone Standard

The Environmental Protection Agency (EPA) finds that the revised Door County (partial) nonattainment area in Wisconsin is attaining the 2015 ozone National Ambient Air Quality Standard (NAAQS) and is approving, in accordance with a request from the Wisconsin Department of Natural Resources (WDNR), the redesignation 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). WDNR submitted this request on January 5, 2022.

Publication Date: 
Friday, April 29, 2022 - 4:00am

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

The Environmental Protection Agency (EPA) finds that the Chicago-Naperville, IL-IN-WI area (Chicago area) is attaining the 2008 ozone National Ambient Air Quality Standard (NAAQS or standard) and, in response to a request from the Wisconsin Department of Natural Resources (Wisconsin or the State), is redesignating the Wisconsin portion of the 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: 
Monday, April 11, 2022 - 4:00am

Air Plan Approval; Wisconsin; Redesignation of the Manitowoc, Wisconsin, Area to Attainment of the 2015 Ozone Standard

The Environmental Protection Agency (EPA) finds that the Manitowoc, Wisconsin, area is attaining the 2015 ozone National Ambient Air Quality Standard (NAAQS or standard) and is approving, in accordance with a request from the Wisconsin Department of Natural Resources (WDNR), the redesignation 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, March 31, 2022 - 4:00am

Air Plan Approval; Montana; Thompson Falls PM10

The Environmental Protection Agency (EPA) is proposing to fully approve 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 redesignate the NAA to attainment for the 24-hour PM<INF>10</INF> National Ambient Air Quality Standard (NAAQS).

Publication Date: 
Tuesday, March 8, 2022 - 4:00am

Air Plan Approval; Montana; Whitefish PM10

The Environmental Protection Agency (EPA) is proposing to fully approve 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 redesignate the NAA to attainment for the 24-hour PM<INF>10</INF> National Ambient Air Quality Standard (NAAQS).

Publication Date: 
Tuesday, March 8, 2022 - 4:00am

Maintenance Plan and Redesignation Request; Nogales PM2.5

The Environmental Protection Agency (EPA) is proposing 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: 
Wednesday, March 2, 2022 - 4:00am

Air Plan Approval; Wisconsin; Redesignation of the Rhinelander Sulfur Dioxide Nonattainment Area

The Environmental Protection Agency (EPA) is redesignating the Rhinelander nonattainment area, which consists of a portion of Oneida County (Crescent Township, Newbold Township, Pine Lake Township, Pelican Township, and the City of Rhinelander), to attainment for the 2010 primary, health-based 1-hour sulfur dioxide (SO<INF>2</INF>) National Ambient Air Quality Standard (NAAQS). EPA is also approving Wisconsin's SO<INF>2</INF> maintenance plan for the Rhinelander area.

Publication Date: 
Wednesday, January 12, 2022 - 4:00am

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