Nitrogen oxides

Air Plan Approval; Delaware; Philadelphia Area 2017 Base Year Inventory for the Ozone National Ambient Air Quality Standard

The Environmental Protection Agency (EPA) is proposing to approve a state implementation plan (SIP) revision formally submitted by the State of Delaware. This revision consists of the base year inventory for the Delaware portion of the Philadelphia-Wilmington- Atlantic City, PA-NJ-MD-DE marginal nonattainment area (Philadelphia Area) for the 2015 ozone national ambient air quality standards (NAAQS). This action is being taken under the Clean Air Act (CAA).

Publication Date: 
Friday, January 21, 2022 - 4:00am

Air Plan Approval; Hawaii; Interstate Transport for the 2015 Ozone NAAQS

The Environmental Protection Agency (EPA) is approving a state implementation plan (SIP) revision from the State of Hawaii addressing requirements in the Clean Air Act (CAA or ``Act'') regarding interstate transport for the 2015 ozone national ambient air quality standards (NAAQS).

Publication Date: 
Monday, December 27, 2021 - 4:00am

Air Plan Approval; Wisconsin; Serious Plan Elements for the Wisconsin Portion of Chicago Nonattainment Area for the 2008 Ozone Standard

The Environmental Protection Agency (EPA) is proposing to approve a revision to the Wisconsin State Implementation Plan (SIP) to meet the volatile organic compound (VOC) and nitrogen oxides (NO<INF>X</INF>) reasonably available control technology (RACT), clean- fuel vehicle programs (CFVP), and the enhanced monitoring of ozone and ozone precursors (EMP) requirements of the Clean Air Act (CAA) in the Wisconsin portion of the Chicago-Naperville, Illinois-Indiana-Wisconsin nonattainment area (Chicago area) for the 2008 ozone National Ambient Air Quality Standards (NAAQS or standard

Publication Date: 
Tuesday, December 7, 2021 - 4:00am

Air Plan Approval; TN; Montgomery County Limited Maintenance Plan for the 1997 8-Hour Ozone NAAQS

The Environmental Protection Agency (EPA) is taking final action to approve a state implementation plan (SIP) revision submitted by the State of Tennessee, through the Tennessee Department of Environment and Conservation (TDEC), Air Pollution Control Division, on June 23, 2020. The SIP revision includes the 1997 8-hour ozone national ambient air quality standards (NAAQS) Limited Maintenance Plan (LMP) for the Montgomery County, Tennessee portion of the Clarksville- Hopkinsville Area (hereinafter referred to as the ``Montgomery County Area'' or ``Area'').

Publication Date: 
Thursday, December 2, 2021 - 4:00am

Air Plan Approval; Georgia; 20158-Hour Ozone Nonattainment New Source Review Permit Program Requirements

The Environmental Protection Agency (EPA) is proposing to approve a revision to the Georgia State Implementation Plan (SIP) submitted by the State of Georgia through the Georgia Environmental Protection Division (GA EPD) on July 2, 2020. EPA is proposing to approve Georgia's certification of existing Nonattainment New Source Review (NNSR) permitting regulations to meet the nonattainment planning requirements for the 2015 8-hour ozone National Ambient Air Quality Standards (NAAQS) for the Atlanta Area, comprised of the counties of Bartow, Clayton, Cobb, DeKalb, Fulton, Gwinnett, and Henry.

Publication Date: 
Thursday, December 2, 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; Maine; Chapter 100 Definitions and Chapter 113 Growth Offset Regulations

The Environmental Protection Agency (EPA) is approving a State Implementation Plan (SIP) revision submitted by the State of Maine. This revision amends the definition of ``Ozone Transport Region'' in the State's Chapter 100 Definitions Regulation and revises language in the State's Chapter 113 Growth Offset Regulation regarding applicability of Nonattainment New Source Review in areas that, at a future date, may not be within the Ozone Transport Region. The intended effect of this action is to approve the submittal into the Maine SIP.

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

Approval of Air Quality Implementation Plans; New York; Part 212, Process Operations

The Environmental Protection Agency (EPA) is approving a revision to the New York State Implementation Plan (SIP) concerning process operations. The effect of this revision is to streamline and update provisions, align those provisions with permitting regulations, and provide regulatory certainty for the regulated community.

Publication Date: 
Friday, October 1, 2021 - 4:00am

Implementation of the Revoked 1997 8-Hour Ozone National Ambient Air Quality Standards; Areas That Attained by the Attainment Date

The Environmental Protection Agency (EPA) is codifying its findings that nine areas in four states attained the revoked 1997 8- hour ozone National Ambient Air Quality Standards (herein referred to as the revoked 1997 ozone NAAQS) by the applicable attainment dates.

Publication Date: 
Thursday, July 29, 2021 - 4:00am

Air Plan Approval; Tennessee; Knoxville Area Limited Maintenance Plan for the 1997 8-Hour Ozone NAAQS

The Environmental Protection Agency (EPA) is taking final action to approve a state implementation plan (SIP) revision submitted by the State of Tennessee, through the Tennessee Department of Environment and Conservation (TDEC), Air Pollution Control Division, via a letter dated January 23, 2020. The SIP revision includes the 1997 8-hour ozone national ambient air quality standards (NAAQS) Limited Maintenance Plan (LMP) for the Knoxville, Tennessee Area (hereinafter referred to as the ``Knoxville Area'' or ``Area'').

Publication Date: 
Friday, July 23, 2021 - 4:00am

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