| Final Regulations |
40 CFR 50 and 58 - Reconsideration of the National Ambient Air Quality Standards for Particulate Matter; Correction
| 12/19/2024 | National |
| Proposed Regulations |
40 CFR 52 - Air Plan Disapproval; Texas; Houston-Galveston-Brazoria Area Section 185 Fee Program; Cessation of Program
| 12/19/2024 | National |
| Proposed Regulations |
40 CFR 52 - Air Plan Revisions; California; California Mobile Source Regulations
| 12/19/2024 | National |
| Proposed Regulations |
40 CFR 52 - Partial Approval and Partial Disapproval of Air Quality Implementation Plans; California; Regional Haze State Implementation Plan for the Second Implementation Period
| 12/19/2024 | National |
| Final Regulations |
40 CFR 81 - Finding of Failure To Attain and Reclassification of Las Vegas Area as Serious for the 2015 Ozone National Ambient Air Quality Standards
| 12/19/2024 | National |
| Notices |
Finding of Failure To Attain by the Attainment Date for the 2010 1-Hour Primary Sulfur Dioxide National Ambient Air Quality Standard; Guam; Piti-Cabras Nonattainment Area
| 12/19/2024 | National |
| Final Regulations |
40 CFR 52 - Partial Approval and Disapproval of Air Quality Implementation Plans; Arizona; Regional Haze State Implementation Plan for the Second Implementation Period and Prong 4 (Visibility) for the 2015 Ozone and 2012 Particulate Matter Standards
| 12/18/2024 | National |
| Notices |
Agency Information Collection Activities; Submission to the Office of Management and Budget for Review and Approval; Comment Request National Volatile Organic Compound Emission Standards for Architectural Coatings (Renewal)
| 12/18/2024 | National |
| Proposed Regulations |
40 CFR 52 - Approval of Air Quality Implementation Plans; New Jersey; Permits and Certificates for Minor Facilities (and Major Facilities Without an Operating Permit), and Air Emission Control and Permitting Exemptions
| 12/17/2024 | National |
| Final Regulations |
40 CFR 52 - Finding of Failure To Attain the Primary 2010 One-Hour Sulfur Dioxide Standard; Texas; Rusk and Panola Counties Nonattainment Area
| 12/17/2024 | National |
| Final Regulations |
40 CFR 52 and 81 - Designation of Areas for Air Quality Planning Purposes; Redesignation Request and Associated Maintenance Plan for Whatcom County, WA 2010 SO2 Nonattainment Area
| 12/17/2024 | National |
| Final Regulations |
40 CFR 81 - Findings of Failure To Attain and Reclassification of Areas in Illinois, Indiana, Michigan, Ohio, and Wisconsin as Serious for the 2015 Ozone National Ambient Air Quality Standards
| 12/17/2024 | National |
| Final Regulations |
40 CFR 81 - Redesignation of Portions of Westmoreland and Cambria Counties, Pennsylvania for the 2010 Sulfur Dioxide (SO2) National Ambient Air Quality Standards (NAAQS)
| 12/17/2024 | National |
| Notices |
Notice of Availability of One New Chapter in the Environmental Protection Agency's Air Pollution Control Cost Manual--Dry Sorbent Injection
| 12/17/2024 | National |
| Final Regulations |
40 CFR 52 - Air Quality Plans; Arizona; Maricopa County Air Quality Department; Source-Specific SIP Revision
| 12/16/2024 | National |
| Final Regulations |
40 CFR 52 - Determination of Attainment by the Attainment Date for the 2010 1-hour Primary Sulfur Dioxide National Ambient Air Quality Standard; Texas; Freestone-Anderson and Titus Counties
| 12/16/2024 | National |
| Final Regulations |
40 CFR 52 - Finding of Failure To Attain by the Attainment Date for the 2010 1-Hour Primary Sulfur Dioxide National Ambient Air Quality Standard; Louisiana; Evangeline Parish Nonattainment Area
| 12/16/2024 | National |
| Final Regulations |
40 CFR 62 - Approval of State Plans for Designated Facilities and Pollutants; MO; Approval and Promulgation of Implementation Plans; Control of Emissions From Existing Municipal Solid Waste Landfills
| 12/16/2024 | National |
| Final Regulations |
40 CFR 81 - Denial of Request for Attainment Date Extension, Finding of Failure To Attain, and Reclassification of an Area in Utah as Moderate for the 2015 Ozone National Ambient Air Quality Standards
| 12/16/2024 | National |
| Notices |
Guidance on the Preparation of State Implementation Plan Provisions That Address the Nonattainment Area Contingency Measure Requirements for Ozone and Particulate Matter
| 12/16/2024 | National |
| Final Regulations |
40 CFR 52 - Finding of Failure To Submit State Implementation Plan Submissions for the 2008 and 2015 Ozone National Ambient Air Quality Standards; California; San Diego County Area
| 12/12/2024 | National |
| Proposed Regulations |
40 CFR 52 - Air Plan Conditional Approval; California; Bay Area Air Quality Management District
| 12/11/2024 | National |
| Proposed Regulations |
40 CFR 52 and 81 - Air Plan Approval; Pennsylvania; Redesignation of the Allegheny County Nonattainment Area to Attainment and Approval of the Area's Maintenance Plan for the 2010 1-Hour Primary Sulfur Dioxide National Ambient Air Quality Standard
| 12/11/2024 | National |
| Notices |
Information Collection Request Number 2265.04; Proposed Information Collection Request; Comment Request; Information Collection Activities Associated With the SmartWay Transport Partnership
| 12/11/2024 | National |
| Notices |
Official Release of the MOVES5 Motor Vehicle Emissions Model for SIPs and Transportation Conformity
| 12/11/2024 | National |
| Proposed Regulations |
40 CFR 52 - Air Plan Approval; WA; Southwest Clean Air Agency; Revisions to Excess Emissions, Startup, Shutdown, and General Requirements
| 12/10/2024 | National |
| Final Regulations |
40 CFR 52, 75, 78, and 97 - Federal ``Good Neighbor Plan'' for the 2015 Ozone National Ambient Air Quality Standards; Notice on Remand of the Record of the Good Neighbor Plan To Respond to Certain Comments
| 12/10/2024 | National |
| Final Regulations |
40 CFR 52 - Air Plan Revisions; Arizona; Maricopa County Air Quality Department
| 12/09/2024 | National |
| Final Regulations |
40 CFR 81 - Finding of Failure To Attain and Reclassification of an Area in Utah as Serious for the 2015 Ozone National Ambient Air Quality Standards
| 12/09/2024 | National |
| Final Regulations |
40 CFR 52 - Air Plan Approval; Maryland; Determination of Attainment by the Attainment Date for the 2010 1-Hour Primary Sulfur Dioxide National Ambient Air Quality Standard
| 12/06/2024 | National |
| Final Regulations |
40 CFR 52 - Air Plan Approval; ID; Revisions to Air Quality Regulations
| 12/05/2024 | National |
| Proposed Regulations |
40 CFR 52 - Air Plan Approval; Michigan and Minnesota; Revision to Taconite Federal Implementation Plan
| 12/04/2024 | National |
| Final Regulations |
40 CFR 52 - Air Plan Partial Approval and Partial Disapproval; North Dakota; Regional Haze State Implementation Plan for the Second Implementation Period
| 12/02/2024 | National |
| Final Regulations |
40 CFR 52 - Air Plan Partial Approval and Partial Disapproval; Utah; Regional Haze State Implementation Plan for the Second Implementation Period
| 12/02/2024 | National |
| Final Regulations |
40 CFR 52 - Air Plan Partial Approval and Partial Disapproval; Wyoming; Regional Haze Plan for the Second Implementation Period
| 12/02/2024 | National |
| Final Regulations |
40 CFR 51 - Guideline on Air Quality Models; Enhancements to the AERMOD Dispersion Modeling System
| 11/29/2024 | National |
| Proposed Regulations |
40 CFR 52 - Air Plan Conditional Approval; California; Bay Area Air Quality Management District
| 11/29/2024 | National |
| Proposed Regulations |
40 CFR 52 - Air Plan Approval; New York; Knowlton Technologies LLC
| 11/26/2024 | National |
| Final Regulations |
40 CFR 52 - Excess Emissions During Periods of Startup, Shutdown, and Malfunction; Partial Withdrawals of Findings of Failure To Submit State Implementation Plan
| 11/26/2024 | National |
| Proposed Regulations |
40 CFR 52 - Excess Emissions During Periods of Startup, Shutdown, and Malfunction; Partial Withdrawals of Findings of Failure To Submit State Implementation Plan (SIP)
| 11/26/2024 | National |