EPA Tweaks California's Air Permit Rules for Clarity and Modernity
Published Date: 4/2/2026
Proposed Rule
Summary
The EPA wants to update Monterey Bay’s air permit rules to make them clearer and more modern. They’re removing some old emergency rules, stopping greenhouse gas permits, and adding online public notices alongside newspapers. If you’re involved in local air permits, these changes could affect you—comments are open until May 4, 2026, so speak up before then!
No Economic Impacts Identified for this Document
Your PRIA Score
Personalized for You
How does this regulation affect your finances?
Sign up for a PRIA Policy Scan to see your personalized alignment score for this federal register document and every other regulation we track. We analyze your financial profile against policy provisions to show you exactly what matters to your wallet.
Key Dates
Department and Agencies
Related Federal Register Documents
2026-08750 — Extension of Postponement of Effectiveness for Certain Provisions of Trichloroethylene (TCE); Regulation Under the Toxic Substances Control Act (TSCA)
The EPA is delaying some rules about the chemical TCE until court decisions are finished. This delay affects certain allowed uses of TCE that had special workplace rules. Businesses using TCE under these exemptions get more time before new restrictions kick in, helping them avoid sudden costs or changes.
2026-07061 — Hazardous and Solid Waste Management System: Disposal of Coal Combustion Residuals From Electric Utilities; Legacy/CCRMU Amendments
The EPA is updating rules on how electric utilities handle coal waste to make cleanup safer and smarter. These changes affect power plants by easing some rules, adding new ways to monitor and close waste sites, and allowing more beneficial reuse of coal waste. Comments are open until June 12, 2026, so utilities and communities can weigh in before the new rules take effect.
2026-06808 — Reconsideration of Standards of Performance for New, Reconstructed, and Modified Sources and Emissions Guidelines for Existing Sources: Oil and Natural Gas Sector Climate Review
The EPA is making some smart tweaks to rules for oil and natural gas companies about how they handle gas flaring and monitoring. These changes fix technical details without changing pollution limits and bring back some important reporting rules accidentally removed last year. The new rules kick in on June 8, 2026, so companies should get ready to follow the updated steps without extra costs.
2026-06275 — Renewable Fuel Standard (RFS) Program: Standards for 2026 and 2027, Partial Waiver of 2025 Cellulosic Biofuel Volume Requirement, and Other Changes
The EPA just set new rules for renewable fuels in 2026 and 2027, including how much biofuel must be used. They’re also easing the 2025 cellulosic biofuel goals because production fell short and removing renewable electricity from the program. These changes affect fuel producers and sellers, kick in mostly mid-2026, and aim to keep cleaner fuels flowing without breaking the bank.
2026-05167 — National Emission Standards for Hazardous Air Pollutants: Ethylene Oxide Emissions Standards for Sterilization Facilities Residual Risk and Technology Review Reconsideration
The EPA is updating rules for sterilization facilities that use ethylene oxide, a chemical that can be harmful if not controlled. They’re rolling back some strict standards from 2024, fixing technical errors, and changing how facilities prove they’re following the rules. If you run or work with these facilities, get ready for new deadlines and ways to stay in compliance by mid-2026.
2026-04646 — Standards of Performance for New Stationary Sources and Emission Guidelines for Existing Sources: Large Municipal Waste Combustors Voluntary Remand Response and Five-Year Review
The EPA is updating pollution rules for big trash-burning plants to cut harmful emissions like lead, mercury, and dioxins. These changes affect both new and existing facilities, tighten limits, remove some loopholes, and improve reporting, all starting May 11, 2026. This update will clean up the air by reducing over 3,200 tons of pollution each year, helping communities breathe easier without breaking the bank.
Previous / Next Documents
Previous: 2026-06442 — Air Plan Approval; Wisconsin; Moderate Attainment Plan Elements for Wisconsin's 2015 Ozone Standard Areas
The EPA is proposing to approve Wisconsin’s plan to keep ozone pollution in check in Kenosha, Milwaukee, and Sheboygan areas. This plan includes rules for car emissions, inspections, and new factories to help meet air quality goals by 2023. If approved, these changes will help protect public health without adding big costs, and the public can comment until May 4, 2026.
Next: 2026-06444 — Accidental Release Prevention Requirements: Risk Management Programs Under the Clean Air Act; Common Sense Approach to Chemical Accident Prevention; Extension of Comment Period
The EPA is giving more time for people and companies to share their thoughts on new rules about preventing chemical accidents. This extension means comments are now due by May 11, 2026, instead of April 10. If you handle chemicals, this extra time helps you weigh in on safety changes that could affect your operations and costs.