Sulfur oxides

Air Plan Approval; KY; Updates to Attainment Status Designations

The Environmental Protection Agency (EPA) is taking final action to approve a State Implementation Plan (SIP) revision submitted by the Commonwealth of Kentucky, through the Kentucky Division for Air Quality (KDAQ), on December 9, 2019. The SIP revision updates the description and attainment status designations of geographic areas within the Commonwealth for several National Ambient Air Quality Standards (NAAQS or standards). The updates are being made to conform Kentucky's attainment status tables with the federal attainment status designations for these areas.

Publication Date: 
Monday, March 1, 2021 - 4:00am

Air Plan Approval; Tennessee; Emissions Inventory and Nonattainment New Source Review Plan for Sullivan County SO2

The Environmental Protection Agency (EPA) is taking final action to approve portions of State Implementation Plan (SIP) revisions submitted by the State of Tennessee, through the Tennessee Department of Environment and Conservation (TDEC), on May 12, 2017.

Publication Date: 
Monday, March 1, 2021 - 4:00am

Approval and Promulgation of Implementation Plans; Colorado; Revisions to Regulation Number 7 and RACT Requirements for 2008 8-Hour Ozone Standard for the Denver Metro/North Front Range Nonattainment Area

The Environmental Protection Agency (EPA) is approving and conditionally approving State Implementation Plan (SIP) revisions submitted by the State of Colorado on May 31, 2017, May 14, 2018 and May 8, 2019. The revisions are to Colorado Air Quality Control Commission (Commission or AQCC) Regulation Number 7 (Reg. 7). The revisions to Reg.

Publication Date: 
Wednesday, February 24, 2021 - 4:00am

Air Quality State Implementation Plans; Approval and Promulgation of Implementation Plans; Utah; Infrastructure Requirements for the 2015 Ozone National Ambient Air Quality Standards; Correction

On June 1, 2020, the Environmental Protection Agency (EPA) published a rulemaking proposing to approve multiple elements of the infrastructure SIP requirements for the 2015 ozone NAAQS for the State of Utah, while taking no action on three infrastructure elements (85 FR 33052). On September 16, 2020, we published a rulemaking taking final action on the proposal. The final rulemaking incorrectly stated that there were no comments received during the public comment period for the proposed rulemaking (85 FR 57731).

Publication Date: 
Tuesday, February 23, 2021 - 4:00am

Air Plan Approval; AK, Fairbanks North Star Borough; 2006 24-hour PM2.5

The Environmental Protection Agency (EPA) is proposing to approve parts of state implementation plan (SIP) submissions, submitted by the State of Alaska (Alaska or the State) to address Clean Air Act (CAA or Act) requirements for the 2006 24-hour fine particulate matter (PM<INF>2.5</INF>) national ambient air quality standards (NAAQS) in the Fairbanks North Star Borough PM<INF>2.5</INF> nonattainment area (Fairbanks PM<INF>2.5</INF> Nonattainment Area).

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

Approval and Promulgation of Implementation Plans; United States Virgin Islands; Regional Haze Federal Implementation Plan; Correction

On October 22, 2012, the EPA published a final rule in the Federal Register promulgating a Federal Implementation Plan (FIP) intended to address regional haze obligations for the Territory of the United States Virgin Islands. However, at that time EPA erroneously failed to incorporate into the Code of Federal Regulations (CFR) certain emission limits that had been determined to be necessary to satisfy those obligations and that had been proposed and included in the docket for the action.

Publication Date: 
Friday, February 19, 2021 - 4:00am

Air Plan Approval; Washington: Inspection and Maintenance Program

The Environmental Protection Agency (EPA) is approving a revision to the Washington State Implementation Plan (SIP) submitted by the State of Washington on June 2, 2019, through the Washington Department of Ecology. The revision, applicable in Clark, King, Pierce, Snohomish, and Spokane Counties, Washington, removes the Inspection and Maintenance (I/M) program from the active control measure portion of the SIP.

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

Air Plan Approval; Washington; Infrastructure Requirements for the 2010 Sulfur Dioxide and 2015 Ozone Standards

Whenever the Environmental Protection Agency (EPA) promulgates a new or revised National Ambient Air Quality Standard (NAAQS), the Clean Air Act requires each state to make a State Implementation Plan (SIP) submission to establish that its SIP provides for the implementation, maintenance, and enforcement of the revised NAAQS. This type of SIP submission is commonly referred to as an infrastructure SIP submission.

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

Air Plan Approval; Washington; Interstate Transport Requirements for the 2010 Sulfur Dioxide National Ambient Air Quality Standards

The Environmental Protection Agency (EPA) is approving the State Implementation Plan (SIP) revisions submitted by Washington on February 7, 2018 as meeting certain Clean Air Act (CAA) requirements for interstate transport of the 2010 1-hour Sulfur Dioxide (SO<INF>2</INF>) National Ambient Air Quality Standards (NAAQS). The EPA has determined that emissions from Washington sources will not contribute significantly to nonattainment or interfere with the maintenance of the 2010 1-hour SO<INF>2</INF> NAAQS in any other state.

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

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

The Environmental Protection Agency (EPA) is approving a State Implementation Plan (SIP) submission by the Commonwealth of Massachusetts. Except as noted below, this submission satisfies the infrastructure requirements of the Clean Air Act (CAA) for the 2015 ozone National Ambient Air Quality Standards (NAAQS). The infrastructure requirements are designed to ensure that the structural components of each state's air quality management program are adequate to meet the state's responsibilities under the CAA.

Publication Date: 
Tuesday, February 9, 2021 - 4:00am

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