Ozone

Air Plan Approval; Arizona; Maricopa County; Reasonably Available Control Technology-Combustion Sources

The Environmental Protection Agency (EPA) is taking final action to approve a revision to the Maricopa County Air Quality Department's (MCAQD or ``County'') portion of the Arizona State Implementation Plan (SIP). This revision concerns emissions of oxides of nitrogen (NO<INF>X</INF>) and particulate matter (PM) from combustion equipment and internal combustion engines.

Publication Date: 
Tuesday, February 7, 2023 - 4:00am

Air Plan Approval; Wisconsin; 2015 Ozone Standard

The Environmental Protection Agency (EPA) is approving rules submitted by the Wisconsin Department of Natural Resources (WDNR) as a revision to its State Implementation Plan (SIP). The submitted rules incorporate the 2015 primary and secondary National Ambient Air Quality Standards (NAAQS) for ozone. In addition, WDNR included several updates to ensure implementation of the ozone NAAQS, in areas currently or formerly designated as nonattainment for any ozone standard, in a manner consistent with Clean Air Act (CAA) requirements.

Publication Date: 
Wednesday, February 1, 2023 - 4:00am

Reconsideration of the National Ambient Air Quality Standards for Particulate Matter

Based on the Environmental Protection Agency's (EPA's) reconsideration of the air quality criteria and the national ambient air quality standards (NAAQS) for particulate matter (PM), the EPA proposes to revise the primary annual PM<INF>2.5</INF> standard by lowering the level. The Agency proposes to retain the current primary 24-hour PM<INF>2.5</INF> standard and the primary 24-hour PM<INF>10</INF> standard.

Publication Date: 
Friday, January 27, 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; 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

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

Air Plan Approval; California; San Diego County Air Pollution Control District

The Environmental Protection Agency (EPA) is taking final action to approve a revision to the San Diego County Air Pollution Control District's (SDCAPCD or ``District'') portion of the California State Implementation Plan (SIP). This revision concerns a negative declaration for the 2008 8-hour ozone National Ambient Air Quality Standards (NAAQS) in the ozone nonattainment area under the jurisdiction of the SDCAPCD and one volatile organic compound (VOC) rule covering transfer of organic compounds into mobile transport trucks.

Publication Date: 
Tuesday, January 17, 2023 - 4:00am

Finding of Failure To Submit State Implementation Plan Revisions Required Under Clean Air Act Section 185; California; Sacramento Metro Area

The EPA is taking final action finding that the state of California has failed to submit state implementation plan (SIP) revisions for the Sacramento Metro nonattainment area to satisfy certain requirements of the Clean Air Act (CAA) for the 2008 8-hour ozone National Ambient Air Quality Standards (NAAQS). Specifically, these requirements pertain to the assessment and collection of fees under CAA section 185. This action triggers certain CAA deadlines for the imposition of sanctions if California does not submit the required SIP revisions within the specified timeframes.

Publication Date: 
Tuesday, January 17, 2023 - 4:00am

Air Plan Approval; North Carolina; Charlotte-Gastonia-Rock Hill Area Limited Maintenance Plan for the 1997 8-Hour Ozone NAAQS

The Environmental Protection Agency (EPA) is finalizing approval of a state implementation plan (SIP) revision submitted by the State of North Carolina, through the North Carolina Department of Environment Quality, Division of Air Quality (DAQ), via a letter dated December 9, 2021.

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

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