Incorporation by reference

Air Plan Approval; TN; Removal of Vehicle I/M Program for the Middle Tennessee and Hamilton County Areas

The Environmental Protection Agency (EPA) is approving state implementation plan (SIP) revisions submitted by the State of Tennessee, through the Tennessee Department of Environment and Conservation (TDEC), through letters dated February 26, 2020. Specifically, EPA is approving the removal of Tennessee's motor vehicle inspection and maintenance (I/M) program requirements for Davidson, Sumner, Rutherford, Williamson and Wilson Counties in Tennessee (also known as the Middle Tennessee Area) and Hamilton County (also known as the Chattanooga Area), from the federally-approved SIP.

Publication Date: 
Tuesday, August 17, 2021 - 4:00am

Approval and Promulgation of Air Quality Implementation Plans; District of Columbia; Emissions Statement Certification for the 2015 Ozone National Ambient Air Quality Standard

The Environmental Protection Agency (EPA) is approving a state implementation plan (SIP) revision formally submitted by the District of Columbia Department of Energy and the Environment (DOEE). The revision provides the District's certification that its existing emissions statement program satisfies the emissions statement requirements of the Clean Air Act (CAA) for the 2015 ozone National Ambient Air Quality Standard (NAAQS).

Publication Date: 
Friday, August 13, 2021 - 4:00am

Air Plan Approval; Illinois; 2008 Ozone Moderate VOC RACT for Chicago

The Environmental Protection Agency (EPA) is approving volatile organic compound (VOC) reasonably available control technology (RACT) State Implementation Plan (SIP) revisions for the Illinois portion of the Chicago-Naperville, IL-IN-WI nonattainment area (Illinois portion) under the 2008 8-hour ozone National Ambient Air Quality Standard (``NAAQS'' or ``standard'') submitted by the Illinois Environmental Protection Agency (``Illinois'' or ``Illinois EPA'') on January 10, 2019 and supplemented on April 30, 2020. EPA is also approving the Stepan Co.

Publication Date: 
Friday, August 13, 2021 - 4:00am

Interstate Transport Prongs 1 and 2 for the 2010 Sulfur Dioxide (SO2

The Environmental Protection Agency (EPA) is taking final action to approve State Implementation Plan (SIP) submissions from Kansas and Nebraska addressing the Clean Air Act (CAA or Act) interstate transport SIP requirements for the 2010 Sulfur Dioxide (SO<INF>2</INF>) National Ambient Air Quality Standards (NAAQS). These submissions address the requirement that each SIP contain adequate provisions prohibiting air emissions that will have certain adverse air quality effects in other states.

Publication Date: 
Wednesday, August 11, 2021 - 4:00am

Air Plan Approval; OR; Updates to Adoption by Reference of Federal Provisions

The Environmental Protection Agency (EPA) is approving a revision to the Oregon State Implementation Plan (SIP) submitted on January 29, 2021. The revision updates the date by which Federal provisions are adopted by reference into the Oregon SIP, making air quality requirements more current.

Publication Date: 
Wednesday, August 11, 2021 - 4:00am

Air Plan Approval; AK; Juneau's Mendenhall Valley Second 10-Year PM10

The Environmental Protection Agency (EPA) is proposing to approve the Juneau, Mendenhall Valley, 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 beyond redesignation for particulate matter with an aerodynamic diameter less than or equal to a nominal 10 micrometers (PM<INF>10</INF>).

Publication Date: 
Wednesday, August 11, 2021 - 4:00am

Approval and Promulgation of Implementation Plans; New York; Ozone Season NOX

The Environmental Protection Agency (EPA) is approving a revision to the New York State Implementation Plan (SIP) as a SIP- strengthening measure that is expected to further control emissions of oxides of nitrogen (NO<INF>x</INF>) to contribute to attainment and maintenance of ozone standards. This SIP strengthening measure goes beyond what has already been approved as satisfying the RACT requirements for the 2008 ozone NAAQS.

Publication Date: 
Wednesday, August 11, 2021 - 4:00am

Air Plan Approval; Ohio; Infrastructure SIP Requirements for the 2015 Ozone NAAQS

The Environmental Protection Agency (EPA) is approving elements of a State Implementation Plan (SIP) submission from Ohio regarding the infrastructure requirements of section 110 of the Clean Air Act (CAA) for the 2015 Ozone National Ambient Air Quality Standards (NAAQS). The infrastructure requirements are designed to ensure that the structural components of each state's air quality management program are adequate to meet the state's responsibilities under the CAA. EPA proposed to approve this action on March 9, 2021, and received no adverse comments.

Publication Date: 
Wednesday, August 11, 2021 - 4:00am

Revised 2023 and Later Model Year Light-Duty Vehicle Greenhouse Gas Emissions Standards

The Environmental Protection Agency (EPA) is proposing to revise the greenhouse gas (GHG) emissions standards for light-duty vehicles for 2023 and later model years to make the standards more stringent.

Publication Date: 
Tuesday, August 10, 2021 - 4:00am

Air Plan Approval; Nebraska; Revisions to Title 129 of the Nebraska Administrative Code; General Conformity

The Environmental Protection Agency (EPA) is taking final action to approve a revision to the State Implementation Plan (SIP) for the State of Nebraska. This final action will amend the SIP to revise title 129 of the Nebraska Administrative Code by removing a portion of the SIP that addresses general conformity. General Conformity ensures that the actions taken by federal agencies do not interfere with a state's plan to attain and maintain national standards for air quality.

Publication Date: 
Monday, August 9, 2021 - 4:00am

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