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Browse 83 rules and proposed rules from the Federal Register.
83
Total Regulations
Showing 31–60 of 83
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The Environmental Protection Agency (EPA) is finalizing approval of a state implementation plan (SIP) revision submitted by the State of South Carolina, through the South Carolina Department of Environmental Services (SCDES, formerly the "South Carolina Department of Health and Environmental Control"), on September 26, 2023. The SIP revision includes the State's plan for maintaining the 2008 ozone National Ambient Air Quality Standard (NAAQS) through 2036 for the South Carolina portion of the bi-state Charlotte-Rock Hill, North Carolina-South Carolina 2008 8-hour ozone nonattainment area (the entire area is hereinafter referred to as the "bi-State Charlotte Area" and the South Carolina portion is hereinafter referred to as the "York County Area"). EPA is approving and incorporating this maintenance plan, including the 2018 and 2036 motor vehicle emission budgets (budgets) for nitrogen oxides (NO<INF>X</INF>) and volatile organic compounds (VOC) for the York County Area, into the SIP. EPA is finalizing approval because the York County Area maintenance plan provides for the maintenance of the 2008 8-hour ozone NAAQS within the Area through the end of the second 10-year portion of the maintenance period. Additionally, EPA finds the 2018 and 2036 budgets for the York County Area adequate for the purposes of transportation conformity.
The Environmental Protection Agency (EPA or "Agency") is proposing to determine that the Phoenix-Mesa nonattainment area ("Phoenix-Mesa area") would have attained the 2015 ozone national ambient air quality standards (NAAQS) by the August 3, 2024 "Moderate" area attainment date, but for emissions emanating from outside the United States. If we finalize this proposed action, the Phoenix-Mesa area would no longer be subject to the Clean Air Act (CAA) requirements pertaining to reclassification upon failure to attain and therefore would remain classified as a Moderate nonattainment area for the 2015 ozone NAAQS. This action, when finalized, will fulfill the EPA's statutory obligation to determine whether the Phoenix-Mesa area attained the NAAQS by the attainment date.
The Environmental Protection Agency (EPA) is approving elements of a state implementation plan (SIP) submission from Montana regarding the infrastructure requirements of the Clean Air Act (CAA) for the 2015 8-hour 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. Additionally, EPA is finalizing approval of Montana's request to update their SIP to incorporate the most recent version of EPA's "Guidelines on Air Quality Models." EPA is taking this action pursuant to the CAA.
The Environmental Protection Agency (EPA) is taking final action to approve the State of Arizona's "SIP Revision: 2015 Ozone NAAQS, Yuma Redesignation Request and Maintenance Plan" ("Yuma Maintenance Plan" or "Plan") as a revision to the Arizona state implementation plan (SIP). The Yuma Maintenance Plan includes, among other elements, an emissions inventory consistent with attainment, a maintenance demonstration, contingency provisions, and a motor vehicle emissions budget for use in transportation conformity determinations for the ten-year maintenance period. With this action, the EPA is approving the motor vehicle emissions budgets for 2020, 2030, and 2037. The EPA is also approving the State's request to redesignate the Yuma nonattainment area ("Yuma area") from nonattainment to attainment for the 8-hour national ambient air quality standards (NAAQS) for ozone promulgated in 2015 ("2015 ozone NAAQS"). The EPA is finalizing this action because this SIP revision meets the applicable Clean Air Act (CAA or "Act") requirements for maintenance plans and because the State has met the requirements under the Act for redesignation of a nonattainment area to attainment with respect to the Yuma area.
The Environmental Protection Agency (EPA) is approving State Implementation Plan (SIP) revisions submitted by the State of Connecticut. These SIP revisions relate to the 2008 8-Hour ozone National Ambient Air Quality Standards (NAAQS). The SIP revisions consist of the following: 2014 and 2017 calendar year periodic emissions inventories. This action is being taken under the Clean Air Act (CAA).
The Environmental Protection Agency (EPA) is proposing to approve under the Clean Air Act (CAA or "Act") a state implementation plan (SIP) submission from the State of California as meeting the attainment-related contingency measure requirements for the 1997 ozone national ambient air quality standards (NAAQS or "standards") in the San Joaquin Valley, California, ozone nonattainment area. The SIP revision is titled "California Smog Check Contingency Measure State Implementation Plan Revision" (Released: September 15, 2023) ("Smog Check Contingency Measure SIP"). The EPA's proposed approval relies on the previously-approved contingency measure for the 1997 ozone NAAQS for the San Joaquin Valley and the justifications for not adopting additional contingency measures that provide for the recommended amount of emissions reductions for such measures. Based on the proposed approval, the EPA is also proposing to determine that the State of California has fulfilled the commitment made by the State in connection with a previous approval action to develop, adopt, and submit attainment contingency measures for the San Joaquin Valley for the 1997 ozone NAAQS meeting the requirements of the CAA.
Pursuant to the U.S. Environmental Protection Agency's Significant New Alternatives Policy program, this action proposes to list several substitutes as acceptable, subject to use conditions, for residential and light commercial air conditioning and heat pumps, chillers, household refrigerators and freezers, motor vehicle air conditioning, and fire suppression and explosion protection. This action also proposes to update use conditions for substitutes previously listed for certain air conditioning end-uses and for water coolers.
The Environmental Protection Agency (EPA) is approving a portion of a Utah State Implementation Plan (SIP) submission addressing interstate transport for the 2008 8-hour ozone national ambient air quality standard (NAAQS). The "interstate transport" provision requires that each state's SIP contain adequate provisions to prohibit emissions from within the state from significantly contributing to nonattainment or interfering with maintenance of the NAAQS in other states. In this action, the EPA is only addressing the requirement prohibiting interference with maintenance, referred to as "prong 2," for the 2008 ozone NAAQS.
The Environmental Protection Agency (EPA) is taking final action to determine that the Mariposa County nonattainment area in California ("Mariposa area") attained the 2015 ozone national ambient air quality standards (NAAQS or "standard") by its August 3, 2024 attainment date. Our determination of attainment is based on complete, quality-assured, and certified ambient air quality monitoring data for calendar years 2021-2023, excluding data that showed exceedances due to exceptional events that occurred in 2021 and 2022. As a result of this action, Clean Air Act (CAA or "Act") section 172(c)(9) contingency measures for failure to attain the 2015 ozone NAAQS and contingency measures for failure to make reasonable further progress (RFP) are no longer required for this standard in the Mariposa area. This action fulfills the EPA's statutory obligation to determine whether the Mariposa area attained the NAAQS by the attainment date.
The Environmental Protection Agency (EPA) is approving a state implementation plan (SIP) revision submitted by the State of West Virginia. The revision pertains to West Virginia 45 Code of State Rules (CSR) 40 (WV rule) that establishes the nitrogen oxides (NO<INF>X</INF>) ozone season limitations and requirements for non- electrical generating unit (EGU) large industrial boilers and combustion turbines that have a maximum design heat input of greater than 250 million British thermal units per hour (MMBtu/hr), as well as affected stationary internal combustion engines and cement manufacturing kilns. This action is being taken under the Clean Air Act (CAA).
The Environmental Protection Agency (EPA) has determined that the San Joaquin Valley, California area failed to attain the 1997 8- hour ozone national ambient air quality standard (NAAQS) by its June 15, 2024 "Extreme" area attainment date. This determination is based on quality-assured and certified ambient air quality monitoring data from 2021 through 2023. As a result of this determination, the State of California is required to implement nonattainment contingency measures and the stationary source fee program required under Clean Air Act (CAA) section 185.
The Environmental Protection Agency (EPA) is taking final action to approve the "2023 Maintenance Plan and Redesignation Request for the Revoked 1-Hour Ozone Standard" ("San Joaquin Valley Maintenance Plan" or "Plan") as a revision to the state implementation plan (SIP) for the State of California. The San Joaquin Valley Maintenance Plan includes, among other elements, an emissions inventory consistent with attainment and contingency provisions. The EPA is also finalizing its finding that the State of California's request to redesignate the San Joaquin Valley area from nonattainment to attainment for the revoked 1979 1-hour national ambient air quality standard (NAAQS or "standard") for ozone ("1979 ozone NAAQS," "1-hour ozone NAAQS," or "1-hour ozone standard") meets all the Clean Air Act (CAA or "the Act") criteria for redesignation. Therefore, the EPA is terminating all anti-backsliding obligations for the San Joaquin Valley area for the revoked 1-hour ozone NAAQS.
The Environmental Protection Agency (EPA) is proposing to approve a request to expand the boundary for the Northern Wasatch Front (NWF) 2015 8-hour ozone national ambient air quality standard (NAAQS) nonattainment area (NAA). The request was submitted by the State of Utah on February 27, 2023. The newly expanded portion of the NWF NAA will have the same classification as the original NWF NAA under the 2015 ozone NAAQS and all applicable Clean Air Act (CAA) requirements will become applicable to the newly designated portion upon the effective date of the final action. The EPA is taking this action pursuant to the CAA.
The Environmental Protection Agency (EPA) is proposing to approve the regional haze state implementation plan (SIP) submission submitted by the State of Montana on August 10, 2022, under the Clean Air Act (CAA) and the EPA's Regional Haze Rule (RHR) for the program's second implementation period. Montana's 2022 SIP submission addresses the requirement that states revise their long-term strategies every implementation period to make reasonable progress towards the national goal of preventing any future, and remedying any existing, anthropogenic impairment of visibility, including regional haze, in mandatory Class I Federal areas. Montana's 2022 SIP submission also addresses other applicable requirements for the second implementation period of the regional haze program. The EPA is also proposing to approve the prong 4 visibility portion of Montana's October 1, 2018 Infrastructure SIP submission for the 2015 ozone National Ambient Air Quality Standards (NAAQS). The EPA is taking these actions pursuant to the CAA.
The Environmental Protection Agency (EPA) is supplementing a proposed rule published on March 10, 2021, to approve revisions to the Texas State Implementation Plan (SIP) concerning Nitrogen Oxide (NO<INF>X</INF>) Reasonably Available Control Technology (RACT) requirements for the Serious Houston-Galveston-Brazoria (HGB), 2008 8- hour ozone National Ambient Air Quality Standard (NAAQS) nonattainment area. Because of comments received on the March 10, 2021, proposal, we are providing additional analysis, in this proposal, regarding RACT requirements which apply to sources of NO<INF>X</INF> in this area. Consistent with this analysis, EPA is proposing to determine that Texas' rules meet NO<INF>X</INF> RACT requirements for the 2008 standard under the Serious classification. The volatile organic compounds (VOC) portion of the RACT analysis in the Serious area Attainment Demonstration submittal is addressed in a separate action. The EPA is providing an opportunity for public comment on this supplemental proposal. Comments received on the March 10, 2021, proposal and this supplemental proposal will be addressed in a final rule.
Pursuant to the Federal Clean Air Act (CAA or the Act), the Environmental Protection Agency (EPA) is proposing to approve the May 12, 2020, and May 13, 2020, revisions to the Texas State Implementation Plan (SIP) as satisfying the Serious classification Volatile Organic Compounds (VOC) Reasonably Available Control Technology (RACT) requirement for the Dallas-Fort Worth (DFW) 2008 8-hour ozone National Air Quality Ambient Air Quality Standards (NAAQS) nonattainment area. The DFW area, designated as Serious for the 2008 8-hour ozone NAAQS, consists of Collin, Dallas, Denton, Ellis, Johnson, Kaufman, Parker, Rockwall, Tarrant, and Wise Counties. Specifically, we are proposing to approve the revisions to 30 Texas Administrative Code (TAC) Chapter 115 to implement the major source Reasonably Available Control Technology (RACT) requirement for VOC as addressed in the VOC RACT analysis and negative declaration included with the Serious area Attainment Demonstration (AD) SIP revision. The Nitrogen Oxide (NO<INF>X</INF>) portion of the RACT analysis in the May 13, 2020, revisions will be addressed in a separate action.
The Environmental Protection Agency (EPA) is finalizing a one- year extension of the "Extreme" attainment date from June 15, 2024 to June 15, 2025, for the 1997 ozone national ambient air quality standards (NAAQS) to the Riverside County (Coachella Valley), California ozone nonattainment area ("Coachella Valley"). The EPA is also taking final action on the exceptional event request submitted by the California Air Resources Board (CARB) on October 11, 2024. This action is based on the EPA's concurrence on the exceptional events demonstration, which removed from the design value (DV) calculation the wildfire-influenced data recorded at the Palm Springs--Fire Station monitor (AQS Site ID #060655001) on July 14-15, 2023, and the extension request submitted by the State of California.
On September 26, 2023, the State of South Carolina, through the South Carolina Department of Environmental Services (SCDES, formerly the "South Carolina Department of Health and Environmental Control"), submitted a request for the Environmental Protection Agency (EPA) to approve a State Implementation Plan (SIP) revision containing the State's plan for maintaining the 2008 ozone National Ambient Air Quality Standard (NAAQS or standard) through 2036 for the South Carolina portion of the bi-state Charlotte-Rock Hill, North Carolina- South Carolina 2008 8-hour ozone nonattainment area (the entire area is hereinafter referred to as the "bi-State Charlotte Area" and the South Carolina portion is hereinafter referred to as the "York County Area"). EPA is proposing to approve and incorporate this maintenance plan, including the 2018 and 2036 motor vehicle emission budgets (budgets) for nitrogen oxides (NOx) and volatile organic compounds (VOC) for the York County Area, into the SIP. EPA is also notifying the public of the status of EPA's adequacy determination for the budgets for the York County Area.
The Environmental Protection Agency (EPA) is proposing to approve revisions to Ohio Administrative Code (OAC) Chapters 3745-21 and 3745-110 into the Ohio State Implementation Plan (SIP). The Ohio Environmental Protection Agency ("Ohio" or "Ohio EPA") submitted these revisions on March 30, 2022, and supplemented the submittal on February 1, 2023, and August 28, 2023. EPA is proposing to approve parts of OAC Chapters 3745-21 and 3745-110 as satisfying some of the Moderate Volatile Organic Compound (VOC) Reasonably Available Control Technology (RACT) and Nitrogen Oxide (NO<INF>x</INF>) RACT requirements for the Cleveland, OH nonattainment area (Cuyahoga, Geauga, Lake, Lorain, Medina, Portage, and Summit counties) under the 2015 ozone National Ambient Air Quality Standard ("NAAQS" or "standard"). Finally, EPA is proposing to approve OAC rule 3745-15-03, submitted by Ohio on February 9, 2023, and supplemented on December 1, 2023, and December 30, 2024.
The Environmental Protection Agency (EPA) is proposing to approve a state implementation plan (SIP) revision submitted by the Commonwealth of Pennsylvania. This SIP revision addresses Clean Air Act (CAA) requirements for the enactment of a Basic vehicle emissions inspection and maintenance (I/M) program for the five counties comprising the Pennsylvania portion of the Philadelphia-Wilmington- Atlantic City, PA-NJ-MD-DE Moderate nonattainment area (Philadelphia nonattainment area) for the 2015 8-hour ozone national ambient air quality standards (NAAQS).
The Environmental Protection Agency (EPA) is finalizing our determination that the Sacramento Metro, California area attained the 2008 8-hour ozone national ambient air quality standards (NAAQS) by its December 31, 2024 attainment date. This determination is based on quality-assured and certified ambient air quality monitoring data from 2022 through 2024. We are also finalizing a determination that the requirement for the State to have contingency measures for reasonable further progress (RFP) and attainment for the 2008 ozone NAAQS no longer applies for this area.
The Environmental Protection Agency (EPA) is approving portions of the comprehensive State Implementation Plan (SIP) revisions submitted by New York State that certify that the State has satisfied the requirements for an emission statement program for both the Serious and Moderate classifications of the 2008 and 2015 ozone National Ambient Air Quality Standards (NAAQS), respectively. These actions are being taken in accordance with the requirements of the Clean Air Act (CAA). The EPA proposed to approve this SIP revision on May 8, 2025, and received no comments.
The Environmental Protection Agency (EPA) is determining that Indian country under the jurisdiction of the Shinnecock Indian Nation located within the New York-Northern New Jersey-Long Island nonattainment area (Shinnecock Indian Nation area) failed to attain the 2015 ozone National Ambient Air Quality Standards (NAAQS) by the applicable attainment date. The effect of failing to attain by the applicable attainment date is that the area will be reclassified by operation of law to "Serious" nonattainment for the 2015 ozone NAAQS on September 2, 2025, the effective date of this final rule. This action fulfills the EPA's obligation under the Clean Air Act (CAA) to determine whether ozone nonattainment areas attained the NAAQS by the attainment date and to publish a document in the Federal Register identifying each area that is determined as having failed to attain and identifying the reclassification.
Pursuant to the Federal Clean Air Act (CAA or the Act), the Environmental Protection Agency (EPA) is proposing to approve revisions to the Texas State Implementation Plan (SIP). The revisions were submitted by the Texas Commission on Environmental Quality (TCEQ) on May 12, 2020, and May 13, 2020, and address certain CAA requirements for the Dallas-Fort Worth (DFW) Serious Nonattainment Area (NAA) for the 2008 ozone National Ambient Air Quality Standard (NAAQS). Specifically, EPA is proposing to approve the revisions to 30 Texas Administrative Code (TAC) Chapter 117 to implement the major source Reasonably Available Control Technology (RACT) requirement for Nitrogen Oxides (NO<INF>X</INF>), as addressed in the NO<INF>X</INF> RACT analysis and negative declaration included with the Serious area Attainment Demonstration (AD) SIP revision. The volatile organic compounds (VOC) portion of the RACT analysis in the Serious area AD submittal is addressed in a separate action.
The Environmental Protection Agency (EPA) is supplementing a proposed rule published on March 10, 2021, to approve revisions to the Texas State Implementation Plan (SIP) concerning Nitrogen Oxide (NO<INF>X</INF>) and Volatile Organic Compound (VOC) Reasonably Available Control Technology (RACT) requirements for the Serious Houston-Galveston-Brazoria (HGB), 2008 8-hour ozone National Air Quality Ambient Air Quality Standard (NAAQS) nonattainment area. Because of comments received on the March 10, 2021, proposal, we are providing additional analysis, in this proposal, regarding the RACT requirements which apply to sources of VOC in this area. Consistent with this analysis, EPA is proposing to determine that the Texas Rules meet the RACT requirements for sources of VOCs in the HGB Serious ozone nonattainment area for the purposes of the 2008 standard. The NO<INF>X</INF> portion of the RACT analysis in the March 10, 2021, proposal will be addressed in a separate action. The EPA is providing an opportunity for public comment on this supplemental proposal. Comments received on the March 10, 2021, proposal and this supplemental proposal will be addressed in a final rule.
The Environmental Protection Agency (EPA) is approving a state implementation plan (SIP) revision submitted by the State of Maryland. This revision (Maryland Submittal #24-01) pertains to the re-allocation of nitrogen oxides (NO<INF>X</INF>) ozone season emission caps for large non-electric generating units (non-EGUs, affected units). The amendment also updates a cross reference to the Cross State Air Pollution Rule (CSAPR). This action is being taken under the Clean Air Act (CAA).
The Environmental Protection Agency (EPA) is proposing to approve elements of a state implementation plan (SIP) submission from Montana regarding 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. Additionally, EPA is proposing to approve Montana's request to update their SIP, to incorporate the most current version of the "Guideline on Air Quality Models." The EPA is taking this action pursuant to the CAA.
The Environmental Protection Agency (EPA) is proposing to approve a State Implementation Plan (SIP) revision submitted by the State of Connecticut. This action consists of revisions to Regulations of Connecticut State Agencies (RCSA) sections 22a-174-22e and 22a-174- 22f, primarily to add compliance dates for sources brought into the applicability of these sections due to a change in the definition of "severe non-attainment area for ozone," The definition change had previously been approved into Connecticut's SIP. This action is being taken in accordance with the Clean Air Act.
The Environmental Protection Agency (EPA) is approving State Implementation Plan (SIP) revisions submitted by the State of Connecticut that relate to the 2015 8-hour ozone National Ambient Air Quality Standards (NAAQS). The SIP revisions are for the Greater Connecticut and the Connecticut portion of the New York-Northern New Jersey-Long Island, NY-NJ-CT ozone nonattainment areas. This action will approve submittals which include the 2017 base year emissions inventories for these two nonattainment areas for the 2015 Ozone National Ambient Air Quality Standard. This action is being taken under the Clean Air Act (CAA).
The Environmental Protection Agency (EPA) is proposing to determine that the San Joaquin Valley, California area failed to attain the 1997 8-hour ozone national ambient air quality standard by its June 15, 2024 "Extreme" area attainment date. This proposed determination is based on quality-assured and certified ambient air quality monitoring data from 2021 through 2023.