EPA Proposes Approval for Guam's Sulfur Dioxide Emissions Inventory Update
Published Date: 7/16/2025
Proposed Rule
Summary
The EPA is giving a thumbs-up to Guam’s updated plan that tracks pollution from sulfur dioxide in the Piti-Cabras area. This helps make sure the air gets cleaner and meets the 2010 air quality rules. People living or working in Guam’s Piti-Cabras area can expect better air quality, with no extra costs or delays announced.
Analyzed Economic Effects
1 provisions identified: 1 benefits, 0 costs, 0 mixed.
EPA approves Guam SO2 inventory
The EPA is proposing to approve Guam’s revised base year emissions inventory for the Piti-Cabras area under section 110(k)(3) of the Clean Air Act. This action supports meeting the 2010 1-hour sulfur dioxide (SO2) National Ambient Air Quality Standard for the Piti-Cabras nonattainment area and is described as not introducing extra costs or delays.
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
2026-11047 — National Emission Standards for Hazardous Air Pollutants From Hazardous Waste Combustors: Residual Risk and Technology Review
The EPA just updated rules for places that burn hazardous waste, like incinerators and boilers, to keep the air safe and clean. They confirmed current standards work well but added new limits on harmful gases like hydrogen fluoride and hydrogen cyanide. These changes start June 3, 2026, and include easier electronic reporting and some new rules for startup and shutdown times—helping protect health without big costs.
2026-10641 — Hazardous and Solid Waste Management System: Disposal of Coal Combustion Residuals From Electric Utilities; Federal CCR Permit Program; Reopening of Comment Period
The EPA is reopening the comment period until June 29, 2026, for its proposed rule to create a federal permit program for safely disposing of coal ash from power plants. This affects electric utilities that handle coal waste and aims to improve environmental safety while possibly impacting their costs. Now’s the time for everyone to share their thoughts and help shape the rules!
2026-10387 — Phasedown of Hydrofluorocarbons: Reconsideration of Certain Regulatory Requirements Promulgated Under the Technology Transitions Provisions of the American Innovation and Manufacturing Act of 2020
The EPA is updating rules to phase down hydrofluorocarbons (HFCs), chemicals used in cooling systems like refrigerators and air conditioners. These changes affect businesses in refrigeration, supermarkets, semiconductor manufacturing, and more, allowing some older equipment made before 2025 to keep running. The new rules kick in on July 27, 2026, helping industries transition smoothly while cutting harmful emissions.
2026-10086 — Extending the Compliance Deadline for the PFOA and PFOS Maximum Contaminant Levels
The EPA is giving water systems more time to meet safety rules for two harmful chemicals, PFOA and PFOS, by extending the deadline from April 2029 to April 2031 if they ask for it. This helps water providers get ready without rushing, keeping our drinking water safe. The EPA wants your thoughts and will hold a public hearing in July 2026 to hear from everyone.
2026-10085 — Rescission of Regulatory Determinations and Removal of Related Provisions for Four PFAS Substances (PFHxS, PFNA, HFPO-DA (GenX), and the Mixture of These Three PFAS Plus PFBS)
The EPA is proposing to undo its rules for four PFAS chemicals (PFHxS, PFNA, GenX, and a mix including PFBS) in drinking water because the original process wasn’t done right. This means public water systems won’t have to monitor or treat these chemicals for now. People and water providers should weigh in by July 20, 2026, and a virtual hearing happens July 7.
2026-09895 — Effluent Limitations Guidelines and Standards for the Steam Electric Power Generating Point Source Category-Unmanaged Combustion Residual Leachate
The EPA is updating rules for steam electric power plants to better control dirty water leaking from leftover coal waste. This change affects existing power plants and is expected to save up to $1 billion a year while protecting water quality. Comments on the proposal are open until June 17, 2026, so now’s the time to speak up!
Previous / Next Documents
Previous: 2025-13327 — Air Plan Approval; Minnesota; Exempt Source SIP Revision
The EPA wants to approve Minnesota’s updated air rules to keep state and federal air quality standards in sync. This change affects businesses and communities by making sure everyone follows the same clean air rules. The update comes from Minnesota’s Pollution Control Agency and helps keep the air safer without adding new costs or delays.
Next: 2025-13337 — Air Plan Approval; State of Utah; Utah PM2.5 State Implementation Plan Revisions
The EPA is set to approve Utah’s updated plan to clean up tiny air pollution particles (PM2.5) in Salt Lake City. This plan updates rules for five local facilities to use better pollution controls, helping the air get cleaner faster. Businesses and residents can expect healthier air soon, with changes rolling out after May 2025 and no big new costs announced yet.