Guam's Air Rules Get EPA Green Light: Island Permits Tighten
Published Date: 9/18/2025
Rule
Summary
The EPA just gave the green light to Guam’s updated plan for controlling air pollution from big new projects and major changes to existing ones. This means Guam’s Environmental Protection Agency can now better manage permits to keep the air cleaner. Businesses planning big construction or changes should watch for new rules starting soon, but no extra costs were mentioned yet.
Analyzed Economic Effects
2 provisions identified: 1 benefits, 0 costs, 1 mixed.
Guam EPA Now Issues NSR Permits
The EPA finalized approval of Guam’s plan revision so the Guam Environmental Protection Agency (GEPA) can issue permits for stationary sources. This revision focuses on preconstruction review and permitting of major sources and major modifications under the Clean Air Act, so businesses planning large new projects or major changes should watch for new permitting rules starting soon.
Stronger Local Air Pollution Oversight
The EPA approved changes that let GEPA better manage permits to keep Guam’s air cleaner. This action implements preconstruction review under the Clean Air Act for major pollution sources and major modifications to existing sources.
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
2026-13667, 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!
2026-12927, U.S. Ecology Nevada, Inc. High Mercury Subcategory Wastes Land Disposal Restrictions Variance
The EPA is giving U.S. Ecology Nevada a special green light to handle and dispose of high-mercury waste a bit differently than usual. This means mercury waste treated in Pennsylvania can now be safely sent to U.S. Ecology’s Nevada site for disposal under new rules starting July 27, 2026. This change helps protect people and the environment while keeping mercury waste management efficient and cost-effective.
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.
Previous / Next Documents
Previous: 2025-18057, Hawaii: Amendment to Approval of State Underground Storage Tank Program Revisions, Codification, and Incorporation by Reference
Hawaii’s underground storage tank rules just got a clear upgrade! The EPA officially approved some important changes to Hawaii’s program that keeps tanks safe and the environment clean. This update spells out exactly which state rules count and makes everything official, so tank owners and regulators know what’s what—no surprises, no delays.
Next: 2025-18067, Air Plan Approval; Guam; Clean Data Determination for the Piti-Cabras Nonattainment Area for the 2010 1-Hour Sulfur Dioxide National Ambient Air Quality Standard
Great news for folks in the Piti-Cabras area of Guam! The EPA says the air is now clean enough for sulfur dioxide pollution, so some strict air quality rules are on pause. This means less paperwork and no new costs for now, as long as the air stays clean.