🌬️Texas Air Plan Approval
Pursuant to the Federal Clean Air Act (CAA or the Act), the Environmental Protection Agency (EPA) is approving the portion of the State Implementation Plan (SIP) submittal from the State of Texas demonstrating that the State satisfies the interstate transport requirements of section 110(a)(2)(D)(i)(I), also known as the "good neighbor" provision of the CAA, for the 2010 1-hour sulfur dioxide (SO<INF>2</INF>) primary National Ambient Air Quality Standard (NAAQS). The good neighbor provision requires each State's implementation plan to contain adequate provisions prohibiting the interstate transport of air pollution in amounts that will contribute significantly to nonattainment, or interfere with maintenance, of a NAAQS in any other State.
Learn More🌫️EPA Approves South Dakota’s Regional Haze State Implementation Plan
The Environmental Protection Agency (EPA) is approving a regional haze state implementation plan (SIP) revision submitted by the State of South Dakota on July 29, 2022 (South Dakota's 2022 SIP submission), as satisfying applicable requirements under the Clean Air Act (CAA) and the EPA's Regional Haze Rule (RHR) for the program's second implementation period. The EPA is taking this action pursuant to CAA.
Learn More🌬️Proposed Revisions to Arkansas Air Quality Implementation Plan
Pursuant to the Federal Clean Air Act (CAA or the Act), the Environmental Protection Agency (EPA) is proposing to approve revisions to the Arkansas State Implementation Plan (SIP) submitted to the EPA on February 4, 2025. The revisions address the codification of the Arkansas Pollution Control and Ecology Commission (APC & EC) Rule 19 and Regulations 9, 26, and 31 into the Code of Arkansas Rules (CAR). The revisions are non-substantive and administrative in nature, and do not add or relax any provisions in the approved SIP.
Learn More♻️Florida Approves Emissions Control Plan for Waste Incineration
The Environmental Protection Agency is taking final action to approve a state plan submitted by the State of Florida, through the Florida Department of Environmental Protection (FDEP) on May 31, 2017, that was supplemented on December 19, 2017, and February 2, 2018, for implementing and enforcing the Emissions Guidelines (EG) applicable to existing Commercial and Industrial Solid Waste Incineration (CISWI) units. The State plan provides for implementation and enforcement of the EG, as finalized by the EPA on February 7, 2013, and amended on June 23, 2016, applicable to existing CISWI units for which construction commenced on or before June 4, 2010, or for which modification or reconstruction commenced after June 4, 2010, but no later than August 7, 2013. The Florida State plan establishes emission limits, monitoring, operating, recordkeeping, and reporting requirements for affected CISWI units.
Learn More🌬️EPA Proposes Revision to Alabama Air Permit Regulations
The Environmental Protection Agency (EPA) is proposing to approve a revision to the Alabama State Implementation Plan (SIP) submitted by the Alabama Department of Environmental Management (ADEM) on December 20, 2023. The proposed SIP revision consists of minor changes to certain air permit regulations that have been revised by the State agency since EPA last approved those provisions. EPA is proposing to approve the SIP revision pursuant to the Clean Air Act (CAA or Act).
Learn More🌿EPA Updates Washington State Implementation Plan for Air Quality
The Environmental Protection Agency (EPA) is updating the materials that are incorporated by reference (IBR) into the Washington State Implementation Plan (SIP). The regulations affected by this update have been previously submitted by Washington and approved by the EPA. This update affects the materials that are available for public inspection at the National Archives and Records Administration (NARA) and the EPA Regional Office.
Learn More🌬️EPA Proposes Redesignation of Muscatine, IA Air Quality Status
The Environmental Protection Agency (EPA) is proposing to redesignate the nonattainment area in Muscatine County, Iowa to attainment for the 2010 1-hour sulfur dioxide (SO<INF>2</INF>) National Ambient Air Quality Standard (NAAQS). The EPA is also proposing to approve Iowa's maintenance plan for the 2010 1-hour SO<INF>2</INF> NAAQS for the Muscatine nonattainment area and approve modifications to source-specific permits in the Iowa State Implementation Plan (SIP). The EPA's proposed approval of this rule revision is being done in accordance with the requirements of the Clean Air Act (CAA).
Learn More🌬️EPA's Air Quality Regulations Update for California 2024
The Environmental Protection Agency (EPA) is revising the format for materials submitted by the State of California that are incorporated by reference into the California State Implementation Plan (SIP). The regulations and other materials affected by this format change have all been previously submitted by the State of California and approved by the EPA. This format revision will primarily affect the "Identification of plan--in part" sections, as well as the format of the SIP materials that will be available for public inspection at the EPA Regional Office and the National Archives and Records Administration (NARA). This action, which only relates to source- specific requirements and certain local and regional California air district rules, is the fourth of a series of actions intended to change the format for the entire California SIP.
Learn More🌫️Tennessee's Regional Haze Plan
The Environmental Protection Agency (EPA) is proposing to approve a regional haze State Implementation Plan (SIP) revision submitted by the Tennessee Department of Environmental Conservation (TDEC), dated February 23, 2022, as satisfying the applicable requirements under the Clean Air Act (CAA or Act) and EPA's Regional Haze Rule (RHR) for the program's second planning period. Tennessee's SIP submission addresses the requirement that states must periodically revise their long-term strategies for making reasonable progress toward the national goal of preventing any future, and remedying any existing, anthropogenic impairment of visibility, including regional haze, in mandatory Class I Federal areas. The SIP submission also addresses other applicable requirements for the second planning period of the regional haze program. EPA is proposing this action pursuant to sections 110 and 169A of the Act.
Learn More🌬️North Carolina Air Quality Regulation
The Environmental Protection Agency (EPA) is proposing to approve separate but related State Implementation Plan (SIP) revisions submitted by the North Carolina Division of Air Quality (NCDAQ). First, EPA is proposing to approve a SIP revision submitted by NCDAQ on behalf of the State of North Carolina on October 27, 2023, to remove certain exemptions available at the discretion of a State official for emissions exceeding otherwise applicable SIP emission limitations. Second, EPA is proposing to approve a SIP revision submitted by NCDAQ on behalf of Mecklenburg County Air Quality (MCAQ or Mecklenburg County) on October 25, 2023, to remove a parallel local exemption analogous to the State's for emissions exceeding otherwise applicable SIP emission limitations. In addition, EPA is proposing to approve minor and administrative changes to certain regulatory provisions that have been revised by the State and Mecklenburg County since EPA's last approval of those provisions. EPA is proposing to approve these SIP revisions pursuant to the Clean Air Act (CAA or Act).
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