Sulfur oxides

Air Plan Approval; Wisconsin; Partial Approval and Partial Disapproval of the Oneida County SO2

The Environmental Protection Agency (EPA) is proposing to partially approve and partially disapprove a revision to the Wisconsin State Implementation Plan (SIP) for attaining the 2010 primary, health- based 1-hour sulfur dioxide (SO<INF>2</INF>) national ambient air quality standard (NAAQS or ``standard'') for the Oneida County SO<INF>2</INF> nonattainment area.

Publication Date: 
Wednesday, November 25, 2020 - 4:00am

Air Plan Approval; NC; Blue Ridge Paper SO2

The Environmental Protection Agency (EPA) is approving a source-specific State Implementation Plan (SIP) revision submitted by the State of North Carolina Department of Environmental Quality, Division of Air Quality (DAQ), in final form, through a letter dated September 3, 2020.

Publication Date: 
Tuesday, November 24, 2020 - 4:00am

Air Plan Approval; ID, Incorporation by Reference Updates and Rule Revisions

The Environmental Protection Agency (EPA) is approving the State Implementation Plan (SIP) revisions submitted by Idaho on June 5, 2019 and May 27, 2020. The submitted revisions update the incorporation by reference of specific Federal requirements and clarify source permitting requirements. The EPA finds that the changes are consistent with Clean Air Act requirements.

Publication Date: 
Thursday, November 19, 2020 - 4:00am

Air Plan Approval; Ohio; Technical Amendment

The Environmental Protection Agency (EPA) is finalizing the removal of the air pollution nuisance rule from the Ohio State Implementation Plan (SIP) using a Clean Air Act (CAA) error correction provision. EPA has determined that this rule was not relied upon by Ohio to demonstrate implementation, maintenance or enforcement of any national ambient air quality standard (NAAQS). Upon the effective date of this action, the nuisance rule will no longer be part of the Ohio SIP.

Publication Date: 
Thursday, November 19, 2020 - 4:00am

Air Plan Approval; Iowa; Air Quality Implementation Plan-Muscatine Sulfur Dioxide Nonattainment Area and Start-up, Shutdown, Malfunction SIP Call Withdrawal

The Environmental Protection Agency (EPA) is approving a State Implementation Plan (SIP) revision, submitted by the state of Iowa, through the Iowa Department of Natural Resources (IDNR), to the EPA on May 26, 2016, for the purpose of providing for attainment of the 2010 1-hour primary Sulfur Dioxide (SO<INF>2</INF>) National Ambient Air Quality Standard (NAAQS) in the Muscatine County, Iowa nonattainment area (NAA).

Publication Date: 
Tuesday, November 17, 2020 - 4:00am

Determination of Attainment by the Attainment Date for the Salt Lake City, Utah and Provo, Utah 2006 24-Hour PM2.5

The Environmental Protection Agency (EPA) has determined that the Salt Lake City, Utah and Provo, Utah Serious nonattainment areas (NAAs) attained the 2006 24-hour fine particulate matter (PM<INF>2.5</INF>) National Ambient Air Quality Standards (NAAQS) by the December 31, 2019 ``Serious'' area attainment date. The determination is based on quality-assured, quality-controlled and certified ambient air quality monitoring data from 2017 through 2019, available in the EPA's Air Quality System (AQS) database.

Publication Date: 
Tuesday, November 17, 2020 - 4:00am

Limited Approval, Limited Disapproval of Arizona Air Plan Revisions, Hayden Area; Sulfur Dioxide Control Measures-Copper Smelters

The Environmental Protection Agency (EPA) is finalizing a limited approval and limited disapproval of a revision to the Arizona State Implementation Plan (SIP). This revision concerns sulfur dioxide (SO<INF>2</INF>) emissions from the primary copper smelter in Hayden, Arizona. Specifically, we are taking action on a local rule submitted by the Arizona Department of Environmental Quality (ADEQ) that regulates these emissions under the Clean Air Act (CAA or the Act).

Publication Date: 
Thursday, November 5, 2020 - 4:00am

Air Plan Approval; Connecticut; Control of Particulate Matter and Visible Emissions

The Environmental Protection Agency (EPA) is approving a State Implementation Plan (SIP) revision submitted by the State of Connecticut. This revision amends a Connecticut air-quality regulation for controlling particulate matter (PM) and visible emissions. The intended effect of this action is to define the process industries and activities to which this regulation applies, and to make technical corrections to an emission-rate calculation method. This action is being taken in accordance with the Clean Air Act.

Publication Date: 
Thursday, October 29, 2020 - 4:00am

Air Plan Approval; West Virginia; Redesignation of the Marshall Sulfur Dioxide Nonattainment Area to Attainment and Approval of the Area's Maintenance Plan

The Environmental Protection Agency (EPA) is approving a redesignation request and state implementation plan (SIP) revisions submitted by the State of West Virginia related to the 2010 primary national ambient air quality standard (NAAQS or Standard) for sulfur dioxide (SO<INF>2</INF>) (2010 SO<INF>2</INF> NAAQS).

Publication Date: 
Monday, October 26, 2020 - 4:00am

Air Plan Approval; New Hampshire; Infrastructure State Implementation Plan Requirements for the 2015 Ozone and 2012 PM2.5

The Environmental Protection Agency (EPA) is approving a State Implementation Plan (SIP) revision submitted by the State of New Hampshire that addresses the infrastructure requirements of the Clean Air Act (CAA or Act), excluding the interstate transport provisions, for the 2015 ozone National Ambient Air Quality Standards (NAAQS). We are also granting the state an exemption from the infrastructure SIP contingency plan obligation for ozone and are conditionally approving several elements of New Hampshire's submittal relating to air-quality modeling requirements.

Publication Date: 
Monday, October 26, 2020 - 4:00am

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