Particulate matter

Air Plan Approval; Maine; Infrastructure State Implementation Plan Requirements for the 2015 Ozone Standard and Negative Declaration for the Oil and Gas Industry for the 2008 and 2015 Ozone Standards

The Environmental Protection Agency (EPA) is proposing to approve a State Implementation Plan (SIP) revision submitted by the State of Maine. This revision addresses the infrastructure requirements of the Clean Air Act (CAA or Act) for the 2015 ozone National Ambient Air Quality Standards (NAAQS). Today's proposed action includes all elements of these infrastructure requirements except for the ``Good Neighbor'' or ``transport'' provisions, which will be addressed in a future action.

Publication Date: 
Friday, January 22, 2021 - 4:00am

Air Plan Approval; Kansas; Removal of Kansas City, Kansas Reid Vapor Pressure Fuel Requirement

The Environmental Protection Agency (EPA) is proposing approval of revision to the Kansas State Implementation Plan (SIP), submitted by the Kansas Department of Health and the Environment (KDHE) on December 9, 2020. The proposed revision removes the Kansas City, Kansas seven pounds per square inch Reid Vapor Pressure (RVP) Fuel requirement which required gasoline sold in the Kansas City, Kansas area to have a seven pounds per square inch Reid Vapor Pressure from June 1 to September 15.

Publication Date: 
Tuesday, January 19, 2021 - 4:00am

Air Plan Approval; North Carolina; Revisions to Exclusionary Rules and Permit Exemptions

The Environmental Protection Agency (EPA) is proposing to approve portions of revisions to a State Implementation Plan (SIP) submitted by the State of North Carolina through the North Carolina Department of Environmental Quality, Division of Air Quality (DAQ), on September 18, 2009, and July 10, 2019.

Publication Date: 
Tuesday, January 19, 2021 - 4:00am

Partial Approval and Partial Disapproval of Air Quality Implementation Plans; Arizona; West Pinal County; 1987 PM10

The Environmental Protection Agency (EPA) is proposing to approve in part and to disapprove in part the state implementation plan (SIP) revision submitted by the State of Arizona to meet Clean Air Act (CAA or ``Act'') requirements for the 1987 PM<INF>10</INF> national ambient air quality standards (NAAQS or ``standard'') in the West Pinal County PM<INF>10</INF> nonattainment area.

Publication Date: 
Friday, January 8, 2021 - 4:00am

Review of the Ozone National Ambient Air Quality Standards

Based on the Environmental Protection Agency's (EPA's) review of the air quality criteria and the national ambient air quality standards (NAAQS) for photochemical oxidants including ozone (O<INF>3</INF>), the EPA is retaining the current standards, without revision.

Publication Date: 
Thursday, December 31, 2020 - 4:00am

Air Plan Approval; Arizona; Stationary Sources; New Source Review Updates

The Environmental Protection Agency (EPA) is proposing to approve revisions to the Arizona Department of Environmental Quality's (ADEQ) portion of the Arizona State Implementation Plan (SIP). These revisions are primarily intended to make corrections to the ADEQ's SIP- approved rules for the issuance of New Source Review (NSR) permits for stationary sources under the Clean Air Act (CAA or Act). This proposed action will update the ADEQ's NSR rules in the SIP and correct the remaining deficiencies in the ADEQ's NSR program that we identified in final EPA rulemaking actions in 2015 and 2016.

Publication Date: 
Wednesday, December 23, 2020 - 4:00am

Air Plan Approval; Missouri; Removal of Kansas City, Missouri Reid Vapor Pressure Requirement

The Environmental Protection Agency (EPA) is proposing approval of revision to the Missouri State Implementation Plan (SIP), submitted by the Missouri Department of Natural Resources (MoDNR) on September 15, 2020. The proposed revision removes the Kansas City, Missouri low Reid Vapor Pressure (RVP) requirement which required gasoline sold in the Kansas City, Missouri area to have a seven pounds per square inch Reid Vapor Pressure from June 1 to September 15.

Publication Date: 
Wednesday, December 23, 2020 - 4:00am

Review of the National Ambient Air Quality Standards for Particulate Matter

Based on the Environmental Protection Agency's (EPA's) review of the air quality criteria and the national ambient air quality standards (NAAQS) for particulate matter (PM), the Administrator has reached final decisions on the primary and secondary PM NAAQS.

Publication Date: 
Friday, December 18, 2020 - 4:00am

Approval and Promulgation of Air Quality State Implementation Plans; California; Plumas County; Moderate Area Plan for the 2012 PM2.5

The Environmental Protection Agency (EPA) is proposing to approve through parallel processing a state implementation plan (SIP) revision submitted by the State of California to address Clean Air Act (CAA or ``Act'') requirements for the 2012 annual fine particulate matter (PM<INF>2.5</INF>) national ambient air quality standard (NAAQS or ``standard'') in the Plumas County Moderate PM<INF>2.5</INF> nonattainment area (``Portola nonattainment area'').

Publication Date: 
Thursday, December 3, 2020 - 4:00am

Approval and Promulgation of Air Quality Implementation Plans; Utah; Regional Haze State and Federal Implementation Plans

The Environmental Protection Agency (EPA) is finalizing approval of State Implementation Plan (SIP) revisions submitted by the State of Utah on July 3, 2019, as supplemented on December 3, 2019, to satisfy certain regional haze requirements for the regional haze program's first implementation period (Utah SIP revisions). The EPA is approving the Utah SIP revision that provides an alternative to best available retrofit technology (BART) controls for nitrogen oxides (NO<INF>X</INF>) at the PacifiCorp Hunter and Huntington power plants.

Publication Date: 
Friday, November 27, 2020 - 4:00am

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