Air pollution control

Air Plan Approval; Wisconsin; Attainment Plan for the Rhinelander SO2

The Environmental Protection Agency (EPA) is approving the State Implementation Plan (SIP) revision submitted by Wisconsin on March 29, 2021, which amends a SIP submission previously submitted to EPA on January 22, 2016, and supplemented on July 18, 2016 and November 29, 2016, for attaining the 1-hour sulfur dioxide (SO<INF>2</INF>) primary national ambient air quality standard (NAAQS) for the Rhinelander SO<INF>2</INF> nonattainment area.

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

Approval of Air Quality Implementation Plans; California; Sacramento Metro Area; 2008 8-Hour Ozone Nonattainment Area Requirements

The Environmental Protection Agency (EPA) is taking final action to approve portions of two state implementation plan (SIP) revisions submitted by the State of California to meet Clean Air Act (CAA or ``Act'') requirements for the 2008 8-hour ozone national ambient air quality standards (NAAQS or ``standards'') in the Sacramento Metro ozone nonattainment area (``Sacramento Metro Area'').

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

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

The Environmental Protection Agency (EPA) is taking final action to approve revisions to the San Diego Air Pollution Control District (SDAPCD) portion of the California State Implementation Plan (SIP). These revisions concern emissions of volatile organic compounds (VOCs) from cold solvent cleaning and stripping operations, and from vapor degreasing operations. We are approving revisions to local rules that regulate these emission sources under the Clean Air Act (CAA or the Act).

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

Air Plan Approval; Nevada, Las Vegas Valley; Second 10-Year Carbon Monoxide Limited Maintenance Plan

The Environmental Protection Agency (EPA) is taking final action to approve a Nevada State Implementation Plan (SIP) revision submitted by the Nevada Department of Environmental Protection (NDEP). On September 27, 2010, the EPA redesignated the Las Vegas Valley area from nonattainment to attainment for the carbon monoxide (CO) national ambient air quality standard (NAAQS) and approved the State's CO maintenance plan ensuring the area would maintain the NAAQS for ten years through 2020.

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

Rescission of Clean Data Determination and Call for Attainment Plan Revision for the Yuma, AZ 1987 PM10

On June 1, 2021, the Environmental Protection Agency (EPA) published in the Federal Register a proposal to rescind our previously issued clean data determination for the Yuma, Arizona ``Moderate'' nonattainment area for the 1987 24-hour national ambient air quality standard (NAAQS) for particulate matter with an aerodynamic diameter less than or equal to a nominal 10 micrometers (PM<INF>10</INF>).

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

Air Plan Approval; New Mexico; Clean Air Act Requirements for Emissions Inventory and Emissions Statement for Nonattainment Area for the 2015 Ozone National Ambient Air Quality Standards

The Environmental Protection Agency (EPA) is proposing to approve the State Implementation Plan (SIP) submitted by the State of New Mexico to meet the Emissions Inventory (EI), and Emissions Statement (ES) requirements of the Federal Clean Air Act (CAA or the Act) for the Sunland Park ozone nonattainment area for the 2015 8-hour ozone national ambient air quality standards (NAAQS). EPA is proposing to approve this action pursuant to section 110 and part D of the CAA and EPA's regulations.

Publication Date: 
Friday, October 15, 2021 - 4:00am

Air Plan Approval; Rhode Island; Infrastructure State Implementation Plan Requirements for the 2015 Ozone Standard

The Environmental Protection Agency (EPA) is approving most of a State Implementation Plan (SIP) revision submitted by the State of Rhode Island to address the infrastructure requirements of the Clean Air Act (CAA or Act) for the 2015 ozone National Ambient Air Quality Standards (NAAQS). This action does not address three requirements related to interstate transport.

Publication Date: 
Thursday, October 14, 2021 - 4:00am

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

The Environmental Protection Agency (EPA) is proposing 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, October 13, 2021 - 4:00am

Protection of Stratospheric Ozone: Listing of Substitutes Under the Significant New Alternatives Policy Program; Supplemental Proposal

Pursuant to the U.S. Environmental Protection Agency's Significant New Alternatives Policy program, the Agency is proposing, as an additional option, to list for a limited period of time certain substances in the foamblowing sector, extruded polystyrene: Boardstock and billet end-use, as acceptable, subject to narrowed use limits. This proposal supplements the Agency's June 12, 2020, proposal with respect to the proposed listings in the foam-blowing sector, taking into consideration public comments and information received since issuance of the initial proposal.

Publication Date: 
Wednesday, October 6, 2021 - 4:00am

Air Plan Approval; MS; BART SIP and Regional Haze Progress Report

The Environmental Protection Agency (EPA) is approving two Mississippi State Implementation Plan (SIP) revisions from the Mississippi Department of Environmental Quality (MDEQ) dated October 4, 2018, and August 13, 2020. The October 4, 2018, SIP revision contains the State's first periodic report describing progress towards reasonable progress goals (RPGs) established for regional haze and contains the associated determination that the State's regional haze SIP is adequate to meet these RPGs for the first implementation period (Progress Report).

Publication Date: 
Wednesday, October 6, 2021 - 4:00am

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