Delaware's Updated Rules for Factory Pollution During Startup and Shutdown
Official: Air Plan Approval; Delaware; Excess Emissions Provisions Pertaining to Periods of Startup, Shutdown and Malfunction Events
Reading: EPA approval of Delaware's revised state implementation plan reauthorizes and redesignates existing startup/shutdown emission provisions under the Clean Air Act, extending the prior regulatory framework without a major change in stringency.
This approval helps Delaware meet federal clean air standards.
In clear language
The EPA is approving Delaware's updated air quality plan that fixes rules about pollution emissions during times when factories start up, shut down, or malfunction. Delaware submitted these fixes in February 2025 to address problems the EPA found with their previous plan from 2016. This approval helps Delaware meet federal clean air standards.
How does this affect you?
Pick the type of resident or organization you most identify with — we'll generate a plain-language breakdown of what changes for you and what you can do about it.
Who does this affect?
- Delaware residents who breathe air affected by industrial emissions
- Factory and power plant operators in Delaware
- New Jersey residents near the Delaware border whose air quality can be affected by Delaware's pollution
What can you do?
- Monitor your local air quality using EPA AirNow.gov to understand pollution levels in your area
- Contact your state representatives if you're concerned about industrial emissions affecting your community
Timeline
- February 3, 2025 - Delaware submitted updated air quality plan
- April 30, 2026 - EPA published this proposed approval
No New Jersey official has a verified action on this policy yet.
Related policies
- Federal RegisterAug 20, 2026EPA Approves Wisconsin's Plan to Improve Air Quality in Three Areas
The EPA has approved Wisconsin's air quality improvement plan for three regions (parts of Chicago, Milwaukee, and Sheboygan areas) that currently do not meet federal ozone standards. The plan includes measures to reduce emissions from cars and trucks, vehicle inspection programs, and rules for new industrial sources. This approval means Wisconsin can move forward with implementing these strategies to bring air quality into compliance with federal requirements.
- Federal RegisterAug 20, 2026EPA Approves Arizona's Plan to Reduce Sulfur Dioxide Pollution in the Hayden Area
The EPA has approved Arizona's plan to reduce sulfur dioxide (SO₂) pollution in the Hayden area to meet federal clean air standards set in 1971 and 2010. The plan includes steps Arizona must take to bring the area into compliance, such as requiring pollution controls on sources and monitoring progress toward cleaner air. This approval means Arizona can now implement the measures outlined in the plan to improve air quality.
- Federal RegisterAug 14, 2026EPA Approval of Missouri's Plan to Reduce Ozone Pollution in the St. Louis Area
The EPA is approving Missouri's plan to reduce ground-level ozone pollution in the St. Louis area to meet federal air quality standards. The plan includes vehicle inspection and maintenance programs, rules for new pollution sources, and requirements for major factories to use cleaner technology. This approval applies to the Missouri side of the bi-state St. Louis region.
- Federal RegisterAug 14, 2026EPA Approving Iowa's Plan to Prevent Sulfur Dioxide Pollution from Crossing State Lines
The EPA is approving Iowa's plan to prevent sulfur dioxide air pollution from traveling across state lines and harming air quality in neighboring states, including New Jersey. This approval ensures Iowa is meeting federal Clean Air Act requirements that every state must limit the pollution it sends to other states. The rule applies to a 2010 federal air quality standard for sulfur dioxide.