Nitrogen oxides

Outer Continental Shelf Air Regulations; Consistency Update for New York

The Environmental Protection Agency (EPA) is finalizing an update to a portion of the Outer Continental Shelf (OCS) Air Regulations. Requirements applying to OCS sources located within 25 miles of states' seaward boundaries must be updated periodically to remain consistent with the requirements of the corresponding onshore area (COA), as mandated by the Clean Air Act (CAA). The portion of the OCS air regulations that is being updated here pertains to the requirements for OCS sources for which the State of New York is the COA.

Publication Date: 
Wednesday, September 14, 2022 - 4:00am

Federal Implementation Plan Addressing Reasonably Available Control Technology Requirements for Certain Sources in Pennsylvania

The Environmental Protection Agency (EPA) is promulgating a Federal implementation plan (FIP) for the Commonwealth of Pennsylvania (Pennsylvania or the Commonwealth). This FIP sets emission limits for nitrogen oxides (NO<INF>X</INF>) emitted from coal-fired electric generating units (EGUs) equipped with selective catalytic reduction (SCR) in Pennsylvania in order to meet the reasonably available control technology (RACT) requirements for the 1997 and 2008 ozone national ambient air quality standards (NAAQS).

Publication Date: 
Wednesday, August 31, 2022 - 4:00am

Deadlines for Submission and Recordation of Allowance Allocations Under the Cross-State Air Pollution Rule (CSAPR) Trading Programs and the Texas SO2

The Environmental Protection Agency (EPA) is revising certain administrative deadlines under seven allowance trading programs for emissions of sulfur dioxide (SO<INF>2</INF>) and nitrogen oxides (NO<INF>X</INF>).

Publication Date: 
Friday, August 26, 2022 - 4:00am

Approval and Promulgation of Implementation Plans; New York; Oil and Natural Gas Control Measures

The Environmental Protection Agency (EPA) is approving a State Implementation Plan (SIP) revision submitted by the state of New York. The revision provides the State's control measures for facilities within its borders subject to EPA's 2016 Control Techniques Guideline (CTG) for the oil and natural gas industry. The intended effect of this action is to approve this item into the New York SIP and satisfy the requirement for the CTG. This action is being taken in accordance with the requirements of the Clean Air Act (CAA).

Publication Date: 
Thursday, August 25, 2022 - 4:00am

Air Plan Approval; Kentucky; Boyd and Christian County Limited Maintenance Plans for the 1997 8-Hour Ozone NAAQS

The Environmental Protection Agency (EPA) is proposing to approve state implementation plan (SIP) revisions submitted by the Commonwealth of Kentucky, through the Energy and Environment Cabinet (Cabinet), on March 29, 2021.

Publication Date: 
Wednesday, August 24, 2022 - 4:00am

Approval of California Air Plan Revisions, Eastern Kern County Air Pollution Control District and Imperial County Air Pollution Control District

The Environmental Protection Agency (EPA) is taking final action to approve revisions to the Eastern Kern Air Pollution Control District (EKAPCD) and Imperial County Air Pollution Control District (ICAPCD) portion of the California State Implementation Plan (SIP). These revisions were submitted by the California Air Resources Board (CARB) in response to EPA's June 12, 2015, finding of substantial inadequacy and SIP call for certain provisions in the SIP related to affirmative defenses applicable to excess emissions during startup, shutdown, and malfunction (SSM) events.

Publication Date: 
Monday, August 22, 2022 - 4:00am

Determination of Attainment by the Attainment Date but for International Emissions for the 2015 Ozone National Ambient Air Quality Standard; Imperial County, California

The Environmental Protection Agency (EPA or ``Agency'') is proposing to determine that the Imperial County nonattainment area would have attained the 2015 ozone national ambient air quality standard (NAAQS) by the August 3, 2021 ``Marginal'' area attainment date, but for emissions emanating from outside the United States.

Publication Date: 
Monday, August 15, 2022 - 4:00am

Determination To Defer Sanctions; Arizona; Maricopa County; Reasonably Available Control Technology-Combustion Sources

The Environmental Protection Agency (EPA) is making an interim final determination that the Arizona Department of Environmental Quality (ADEQ) has submitted revised rules on behalf of the Maricopa County Air Quality Department (MCAQD or County) that correct deficiencies in its Clean Air Act (CAA or Act) state implementation plan (SIP) provisions concerning reasonably available control technology (RACT) ozone nonattainment requirements for controlling emissions of oxides of nitrogen (NO<INF>X</INF>) from combustion equipment and internal combustion engines.

Publication Date: 
Thursday, August 4, 2022 - 4:00am

Air Plan Approval; California; Northern Sierra Air Quality Management District; Reasonably Available Control Technology

The Environmental Protection Agency (EPA) is taking final action to approve a revision to the Northern Sierra Air Quality Management District (NSAQMD or ``District'') portion of the California State Implementation Plan (SIP). This revision concerns NSAQMD's demonstration regarding reasonably available control technology (RACT) requirements and negative declarations for the 2015 8-hour ozone national ambient air quality standards (NAAQS or ``standards'') in the Western Nevada County ozone nonattainment area, which is under the jurisdiction of the District.

Publication Date: 
Wednesday, August 3, 2022 - 4:00am

Finding of Failure To Attain and Reclassification of Las Vegas Area as Moderate for the 2015 Ozone National Ambient Air Quality Standard

The Environmental Protection Agency (EPA) is proposing to determine that the Las Vegas, Nevada nonattainment area (``Las Vegas'') for the 2015 ozone National Ambient Air Quality Standard (NAAQS) failed to attain by its applicable ``Marginal'' area attainment date of August 3, 2021. The effect of failing to attain by the attainment date is that Las Vegas will be reclassified by operation of law to ``Moderate'' upon the effective date of the final reclassification notice.

Publication Date: 
Friday, July 22, 2022 - 4:00am

Pages