EPA Proposes Cleaner Air Rules for Antelope Valley
Published Date: 3/26/2025
Proposed Rule
Summary
The EPA is updating air pollution rules for the Antelope Valley area in California to make sure new factories and changes follow cleaner standards. These updates fix past problems and improve how pollution permits are handled. If approved, the changes will help keep the air cleaner without causing penalties right now, and the public can share their thoughts before the final decision.
Analyzed Economic Effects
2 provisions identified: 1 benefits, 0 costs, 1 mixed.
New Source Review (NSR) Permit Changes
On January 7, 2025, the Antelope Valley Air Quality Management District submitted six permitting rules and one rule with limited approval/limited disapproval to revise its New Source Review (NSR) permitting program for new and modified sources under part D of title I of the Clean Air Act. If the EPA finalizes the proposal, these revised rules will be added to the District's portion of California's State Implementation Plan (SIP). The submission says the revisions address deficiencies identified in a previous limited disapproval and include other NSR-related changes.
Deferral of Clean Air Act Sanctions
Elsewhere in this Federal Register, the EPA is making an interim final determination that will stay or defer the imposition of Clean Air Act (CAA) sanctions associated with the Agency's previous limited disapproval action. That stay or deferral is related to the District rule submittal described in this proposal.
Personalized for You
How does this regulation affect your finances?
Personalize government policy and PRIA will tell you what this federal register document means for your household, plus every other regulation we track. PRIA reads each provision against your financial profile to show you exactly what matters to your wallet.
Key Dates
Department and Agencies
Related Federal Register Documents
2026-19072, Rescission of the Greenhouse Gas Findings for Fossil Fuel-Fired Power Plants and Repeal of Regulations for Power Plant Greenhouse Gas Emissions Under Clean Air Act Section 111
The EPA is proposing to cancel all greenhouse gas rules for fossil fuel power plants, saying the law doesn’t let them regulate these emissions for climate reasons. This change affects power plants across the U.S. and could impact future pollution limits and costs. Comments on this proposal are open until November 2, 2026, so now’s the time to speak up!
2026-19071, Partial Repeal of the Carbon Pollution Standards for Fossil Fuel-Fired Electric Generating Units
The EPA is rolling back most of the 2024 rules that limited carbon pollution from fossil fuel power plants. This change affects coal and gas plants by easing some strict limits on emissions and carbon capture technology. The new rules kick in on November 16, 2026, potentially saving money for power plants but raising questions about pollution control.
2026-18317, Updated Definition of “Waters of the United States”
The purpose of this supplemental notice of proposed rulemaking is for the U.S. Environmental Protection Agency (EPA) and the Department of the Army ("the agencies") to supplement and seek additional comment on certain aspects of an earlier proposal, published on November 20, 2025, to revise the regulations defining the scope of waters federally covered under the Clean Water Act in light of the U.S. Supreme Court's 2023 decision in Sackett v. Environmental Protection Agency. As stated in the agencies' November 20, 2025 Notice of Proposed Rulemaking (NPRM), the agencies intend for this rulemaking to provide greater regulatory certainty and increase Clean Water Act program predictability and consistency by clarifying the definition of "waters of the United States." After consideration of the public comments received on the NPRM, the agencies are issuing this notice to supplement the NPRM with additional regulatory options on certain aspects of the proposed rule.
2026-14112, Amendments and Nonconformance Penalties for Model Year 2027 and Later Heavy-Duty Highway Engines and Amendments to Inducement Provisions for SCR-Equipped Diesel Engines
Starting with model year 2027, the EPA is updating rules for big truck engines to make sure they last longer and pollute less. They’re also letting engine makers pay penalties if their engines don’t meet standards, and tightening rules for special pollution-control systems on diesel engines. These changes affect truck and engine makers and kick in soon, with public feedback due by August 29, 2026.
2026-13667, Minor New Source Review Program Air Permitting Public Participation Requirements for State Implementation Plans
The EPA wants to give states more freedom to decide how much public input is needed when approving small air pollution sources or changes. This means local air agencies can tailor public participation to fit their community’s needs while still protecting air quality. If you’re involved in air permits, watch for comment deadlines and possible virtual hearings this summer!
2026-13263, Revisions To Establish the Sixth Unregulated Contaminant Monitoring Rule (UCMR 6) for Public Water Systems
The EPA is rolling out the sixth Unregulated Contaminant Monitoring Rule (UCMR 6) to check for new, sneaky chemicals in public drinking water. Big water systems serving 3,300+ people and some smaller ones will test for 30 different contaminants, including certain PFAS and pesticides, to keep our water safe. Comments and feedback are open until late August 2026, and the EPA will host fun online meetings to chat about the plan!
Previous / Next Documents
Previous: 2025-05119, Airworthiness Directives; Airbus SAS Airplanes
The FAA wants all Airbus A350-941 and -1041 planes to update their flight manuals because the current ones give wrong info about how long planes can taxi in freezing fog. This change helps pilots follow safer rules and avoid problems. Comments on this proposal are open until May 12, 2025, and it could mean some quick updates but no big costs.
Next: 2025-05215, Airworthiness Directives; Airbus SAS Airplanes
If you fly or work with certain Airbus A319, A320, and A321 planes, listen up! The FAA wants to keep checking and fixing a key part inside the plane that’s shown new cracks. They’re adding regular inspections and a final fix to keep everyone safe, with some planes no longer needing these checks. These changes might cost some time and money but are super important for safe skies.