Particulate matter

Partial Approval and Partial Disapproval of Air Quality Implementation Plans; California; San Joaquin Valley Serious Area and Section 189(d) Plan for Attainment of the 1997 Annual PM2.5

The Environmental Protection Agency (EPA) is taking final action to approve in part and disapprove in part portions of state implementation plan (SIP) revisions submitted by California to address Clean Air Act (CAA or ``Act'') requirements for the 1997 annual fine particulate matter (PM<INF>2.5</INF>) national ambient air quality standards (NAAQS or ``standards'') in the San Joaquin Valley PM<INF>2.5</INF> nonattainment area. Specifically, the EPA is approving the 2013 base year emissions inventories in the submitted SIP revision.

Publication Date: 
Friday, November 26, 2021 - 4:00am

Clean Air Plans; California; San Joaquin Valley Moderate Area Plan and Reclassification as Serious Nonattainment for the 2012 PM2.5

The Environmental Protection Agency (EPA) is taking final action on all or portions of four state implementation plan (SIP) revisions submitted by California (``State'') to address Clean Air Act (CAA or ``Act'') requirements for the 2012 fine particulate matter (``PM<INF>2.5</INF>'') national ambient air quality standards (NAAQS or ``standards'') and for the 2006 PM<INF>2.5</INF> NAAQS in the San Joaquin Valley (SJV) PM<INF>2.5</INF> nonattainment area.

Publication Date: 
Friday, November 26, 2021 - 4:00am

Air Plan Approval; North Carolina; Mecklenburg: Source Testing

The Environmental Protection Agency (EPA) is proposing to approve a State Implementation Plan (SIP) revision to the Mecklenburg County portion of the North Carolina SIP, hereinafter referred to as the Mecklenburg County Local Implementation Plan (LIP). The revision was submitted through the North Carolina Division of Air Quality (NCDAQ), on behalf of Mecklenburg County Air Pollution Control (MCAQ), via a letter dated April 24, 2020, which was received by EPA on June 19, 2020.

Publication Date: 
Friday, November 26, 2021 - 4:00am

Air Plan Approval; Pennsylvania; Revision of the Maximum Allowable Sulfur Content Limit for Number 2 and Lighter Commercial Fuel Oil in Allegheny County

The Environmental Protection Agency (EPA) is proposing to approve a state implementation plan (SIP) revision submitted by the Commonwealth of Pennsylvania. The revision updates Allegheny County's portion of the Pennsylvania SIP, which includes regulations concerning sulfur content in fuel oil. This revision pertains to the reduction of the maximum allowable sulfur content limit for Number 2 (No.

Publication Date: 
Friday, November 26, 2021 - 4:00am

Air Plan Approval; FL; Removal of Motor Vehicle Rules

The Environmental Protection Agency (EPA) is proposing to approve a State Implementation Plan (SIP) revision submitted by the State of Florida, through the Florida Department of Environmental Protection (FDEP), via a letter dated July 2, 2020. The revision removes rules prohibiting tampering with motor vehicle air pollution control equipment and rules concerning visible emissions from motor vehicles. EPA is proposing to remove the tampering rules and visible emissions rules from the SIP pursuant to the Clean Air Act (CAA or Act) and applicable regulations.

Publication Date: 
Monday, November 22, 2021 - 4:00am

Air Plan Approval; Washington; Update to the Yakima Regional Clean Air Agency Wood Heater and Burn Ban Regulations

The Environmental Protection Agency (EPA) is proposing to approve submitted revisions to the Yakima Regional Clean Air Agency (YRCAA) regulations designed to control particulate matter from residential wood heaters, such as woodstoves and fireplaces. The updated YRCAA regulations set fine particulate matter trigger levels for impaired air quality burn bans, consistent with statutory changes enacted by the Washington State Legislature.

Publication Date: 
Thursday, November 18, 2021 - 4:00am

Air Plan Approval; California; San Joaquin Valley Air Pollution Control District; Stationary Source Permits

The Environmental Protection Agency (EPA) is taking final action to approve a revision to the San Joaquin Valley Air Pollution Control District (SJVAPCD or ``the District'') portion of the California State Implementation Plan (SIP). This revision concerns the District's New Source Review permitting program for new and modified sources of air pollution under section 110(a)(2)(C) of the Clean Air Act (CAA); specifically our approval of Rule 2021: Experimental Research Operations.

Publication Date: 
Wednesday, November 17, 2021 - 4:00am

Air Plan Approval; North Carolina: Mecklenburg Ambient Air Quality Standards

The Environmental Protection Agency (EPA) is finalizing a State Implementation Plan (SIP) revision to the Mecklenburg County portion of the North Carolina SIP, hereinafter referred to as the Mecklenburg Local Implementation Plan (LIP). The revision was submitted by the State of North Carolina, through the North Carolina Division Air Quality (NCDAQ), on behalf of Mecklenburg County Air Quality via a letter dated April 24, 2020, and was received by EPA on June 19, 2020.

Publication Date: 
Wednesday, November 17, 2021 - 4:00am

Air Plan Approval; AK; Incorporation by Reference Updates and Permit Program Revisions

The Environmental Protection Agency (EPA) is proposing to approve revisions to the Alaska State Implementation Plan (SIP) submitted on November 10, 2020. The revisions update the adoption by reference of certain Federal air regulations and add a pre-approved emission limit option that may be used to permit diesel engine facilities, among other changes. The EPA is proposing to approve the submitted revisions as consistent with Clean Air Act requirements.

Publication Date: 
Wednesday, November 17, 2021 - 4:00am

Air Plan Approval; ID; West Silver Valley Redesignation to Attainment for the 2012 Annual PM2.5

The Environmental Protection Agency (EPA) is redesignating the West Silver Valley, Idaho nonattainment area to attainment for the 2012 annual fine particulate matter (PM<INF>2.5</INF>) National Ambient Air Quality Standard (NAAQS). EPA is also approving a maintenance plan for the area that demonstrates continued attainment of the 2012 PM<INF>2.5</INF> NAAQS through the year 2031, which Idaho submitted along with the redesignation request for inclusion into the Idaho State Implementation Plan (SIP).

Publication Date: 
Tuesday, November 16, 2021 - 4:00am

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