Volatile organic compounds

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

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; 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

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

Finding of Failure To Attain and Reclassification of Las Vegas Area as Moderate for the 2015 Ozone National Ambient Air Quality Standard

The Environmental Protection Agency (EPA or Agency) is determining that the Las Vegas, Nevada nonattainment area (``Las Vegas'') failed to attain the 2015 ozone National Ambient Air Quality Standard (NAAQS) by the applicable attainment date. The effect of failing to attain by the applicable attainment date is that Las Vegas is being reclassified by operation of law as ``Moderate'' nonattainment for the 2015 ozone NAAQS on January 5, 2023, the effective date of this final rule.

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

Air Plan Approval; California; San Joaquin Valley Unified Air Pollution Control District; South Coast Air Quality Management District

The Environmental Protection Agency (EPA) is taking final action to approve revisions to the San Joaquin Valley Unified Air Pollution Control District (SJVUAPCD) and South Coast Air Quality Management District (SCAQMD) portions of the California State Implementation Plan (SIP). These revisions concern emissions of volatile organic compounds (VOCs) and oxides of nitrogen (NO<INF>X</INF>) from flares. We are approving these local rules to regulate these emission sources under the Clean Air Act (CAA or the Act).

Publication Date: 
Wednesday, December 28, 2022 - 4:00am

Air Plan Approval; Texas; Reasonable Further Progress Plan for the Dallas-Fort Worth Ozone Nonattainment Area

The Environmental Protection Agency (EPA) is supplementing a proposed approval published on October 9, 2020 (``October 2020 proposal''), for revisions to the Texas State Implementation Plan (SIP) to meet the Reasonable Further Progress (RFP) requirements for the Dallas-Fort Worth (DFW) serious nonattainment area for the 2008 ozone National Ambient Air Quality Standard (NAAQS).

Publication Date: 
Tuesday, December 20, 2022 - 4:00am

Air Plan Approval; ID; Incorporation by Reference Updates

The Environmental Protection Agency (EPA) proposes to approve a revision to the Idaho State Implementation Plan (SIP) submitted on May 4, 2022. The submission updates the incorporation by reference of the national ambient air quality standards and related planning and monitoring requirements into the Idaho air quality rules as of July 1, 2021. Idaho undertakes such updates regularly to ensure the state air quality rules and the federally enforceable Idaho SIP remain consistent with EPA air quality regulations over time.

Publication Date: 
Monday, December 19, 2022 - 4:00am

Approval, Limited Approval and Limited Disapproval of California Air Plan Revisions; Mojave Desert Air Quality Management District; Stationary Source Permits

The Environmental Protection Agency (EPA) is proposing an approval and a limited approval and limited disapproval of a revision to the Mojave Desert Air Quality Management District (MDAQMD or ``District'') portion of the California State Implementation Plan (SIP). We are proposing approval of five rules and a limited approval and limited disapproval of five rules. These revisions concern the District's New Source Review (NSR) permitting program for new and modified sources of air pollution under part D of title I of the Clean Air Act (CAA or ``Act'').

Publication Date: 
Friday, November 25, 2022 - 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

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