EPA Nerds Debate Nitrogen Oxides in Public Powwows
Published Date: 8/27/2026
Notice
Summary
The Environmental Protection Agency (EPA) Science Advisory Board (SAB) Branch is announcing two public meetings of the Clean Air Scientific Advisory Committee (CASAC). A virtual meeting will be held to receive public comments for the CASAC to consider in their peer review of EPA's Draft Integrated Science Assessment (ISA) for Oxides of Nitrogen (NOX)--Health Criteria. A face-to-face meeting will be held to conduct the peer review of the NO<INF>X</INF> ISA.
No Economic Impacts Identified for this Document
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
2026-14112, 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!
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!
Previous / Next Documents
Previous: 2026-17452, Center for Scientific Review; Notice of Closed Meetings
The Center for Scientific Review is holding several closed virtual meetings this fall to review and decide on important grant applications related to cancer research, physical activity, caregiving, and bioengineering. These meetings protect private info and trade secrets while helping decide who gets funding. Researchers and organizations applying for grants should note the dates in September and October 2026 to stay in the loop.
Next: 2026-17455, National Environmental Education Advisory Council (NEEAC); Notice of Public Meeting
Pursuant to the Federal Advisory Committee Act, notice is hereby given that the next public meeting of the National Environmental Education Advisory Council (NEEAC) will be held virtually on September 15, 2026. The NEEAC was created by Congress to advise, consult with, and make recommendations to the EPA Administrator on matters related to activities, functions, and policies of EPA under the National Environmental Education Act of 1990.