Nitrogen dioxide

Air Plan Approval; IA; Electronic Submittal of Air Quality Information

The Environmental Protection Agency (EPA) is proposing to approve revisions to the Iowa State Implementation Plan (SIP) and the Operating Permit Program for the State of Iowa. The revisions require the electronic submittal of air emissions reporting, construction permit applications, and Title V permit applications, and make administrative updates. These revisions do not impact the stringency of the SIP or have an adverse effect on air quality. The EPA's proposed approval of this rule revision is being done in accordance with the requirements of the Clean Air Act (CAA).

Publication Date: 
Tuesday, January 24, 2023 - 4:00am

Control of Air Pollution From New Motor Vehicles: Heavy-Duty Engine and Vehicle Standards

The Environmental Protection Agency (EPA) is finalizing a program to further reduce air pollution, including ozone and particulate matter (PM), from heavy-duty engines and vehicles across the United States. The final program includes new emission standards that are significantly more stringent and that cover a wider range of heavy-duty engine operating conditions compared to today's standards; further, the final program requires these more stringent emissions standards to be met for a longer period of when these engines operate on the road.

Publication Date: 
Tuesday, January 24, 2023 - 4:00am

Air Plan Approval; Michigan; Base Year Emissions Inventory and Emissions Statement Rule for the 2015 Ozone Standard

The Environmental Protection Agency (EPA) is approving, under the Clean Air Act (CAA), a request submitted by the Michigan Department of Environment, Great Lakes, and Energy (EGLE) on December 18, 2020, to revise the Michigan State Implementation Plan (SIP). EGLE's submittal addresses the emissions inventory and statement requirements for the Allegan County, Berrien County, Detroit (Livingston, Macomb, Monroe, Oakland, St. Clair, Washtenaw, and Wayne Counties) and Muskegon County nonattainment areas under the 2015 ozone National Ambient Air Quality Standard (NAAQS or standard).

Publication Date: 
Wednesday, January 18, 2023 - 4:00am

Second 10-Year Maintenance Plan for the Indian Wells Valley PM10

The Environmental Protection Agency (EPA) is taking final action to approve the ``Indian Wells Valley Second 10-Year PM<INF>10</INF> Maintenance Plan'' (``Indian Wells Second Maintenance Plan'' or ``Plan'') as a revision to the state implementation plan (SIP) for the State of California. The Indian Wells Second Maintenance Plan includes, among other elements, a base year emissions inventory, a maintenance demonstration, contingency provisions, and motor vehicle emissions budgets for use in transportation conformity determinations.

Publication Date: 
Wednesday, January 18, 2023 - 4:00am

Air Plan Approval; North Carolina; Minor Revisions to Nitrogen Oxides Rule

The Environmental Protection Agency (EPA) is finalizing the approval of a revision to the North Carolina State Implementation Plan (SIP) submitted by the North Carolina Department of Environmental Quality (NCDEQ), Division of Air Quality, via a letter dated April 13, 2021, and received by EPA on April 14, 2021. This revision contains minor clarifying and typographical edits to North Carolina's nitrogen oxides (NO<INF>X</INF>) rule. EPA is approving these changes pursuant to the Clean Air Act (CAA or Act).

Publication Date: 
Friday, January 13, 2023 - 4:00am

Air Plan Approval; Virginia; 1997 8-Hour Ozone National Ambient Air Quality Standard Second Maintenance Plan for the Richmond-Petersburg Area

The Environmental Protection Agency (EPA) is proposing to approve a state implementation plan (SIP) revision submitted by the Commonwealth of Virginia. This revision pertains to the Commonwealth's plan, submitted by the Virginia Department of Environmental Quality (VADEQ), for maintaining the 1997 8-hour ozone national ambient air quality standards (NAAQS) (referred to as the ``1997 ozone NAAQS'') in the Richmond, Virginia Area (Richmond-Petersburg Area). This action is being taken under the Clean Air Act (CAA).

Publication Date: 
Thursday, January 12, 2023 - 4:00am

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

The Environmental Protection Agency (EPA) is determining that the Imperial County, California fine particulate matter (PM<INF>2.5</INF>) nonattainment area (``Imperial PM<INF>2.5</INF> nonattainment area'') attained the 2012 annual PM<INF>2.5</INF> national ambient air quality standards (NAAQS or ``standard'') by its December 31, 2021 ``Moderate'' area attainment date. This determination is based upon ambient air quality monitoring data from 2019 through 2021.

Publication Date: 
Wednesday, January 11, 2023 - 4:00am

Air Plan Approval; NC; Miscellaneous NSR Revisions and Updates; Updates to References to Appendix W Modeling Guideline

The Environmental Protection Agency (EPA) is finalizing the approval of a State Implementation Plan (SIP) revision, submitted by North Carolina on April 13, 2021. Specifically, EPA is approving updates to the incorporation by reference of Federal new source review (NSR) regulations and federal guidelines on air quality modeling in the North Carolina SIP.

Publication Date: 
Thursday, January 5, 2023 - 4:00am

Air Plan Approval; Colorado; Reg 3 NSR and APEN Updates

The Environmental Protection Agency (EPA) is finalizing approval of regulatory amendments submitted by the State of Colorado on May 13, 2020. The revisions make limited amendments to the State's New Source Review (NSR) and Air Pollution Emission Notices (APEN). The EPA is taking this action pursuant to the Clean Air Act (CAA).

Publication Date: 
Tuesday, November 22, 2022 - 4:00am

Air Plan Approval; Mississippi; Revision of Excess Emissions Provisions

The Environmental Protection Agency (EPA) is approving a State Implementation Plan (SIP) revision submitted by the Mississippi Department of Environmental Quality (MDEQ) on November 17, 2016, on behalf of the State of Mississippi. The revision was submitted in response to EPA's SIP Call published on June 12, 2015, concerning excess emissions during startup, shutdown, and malfunction (SSM) events. EPA is approving the SIP revision and finds that such SIP revision corrects the deficiencies identified in the June 12, 2015, SIP Call.

Publication Date: 
Friday, November 18, 2022 - 4:00am

Pages