Air Plan Approval; Delaware; 2006 24-Hour Fine Particulate Matter Limited Maintenance Plan for the Philadelphia Nonattainment Area
What happened
The Environmental Protection Agency (EPA) is approving a State Implementation Plan (SIP) revision from the State of Delaware, submitted through the Delaware Department of Natural Resources and Environmental Control (DNREC). This plan is the second 10-year limited maintenance plan for the 2006 24-hour fine particulate matter (PM2.5) national ambient air quality standard (NAAQS) for New Castle County, Delaware, within the Philadelphia-Wilmington, PA-NJ-DE Area. The EPA is also finalizing the process to find this plan adequate for transportation conformity purposes. This final rule is effective on August 3, 2026.
Why it matters
This action ensures that New Castle County is expected to continue meeting air quality standards for fine particulate matter through 2034, protecting public health. It also means that transportation projects in the area will be reviewed to ensure they align with these air quality maintenance goals.
Who it affects
- ›Residents of New Castle County, Delaware
- ›Delaware Department of Natural Resources and Environmental Control (DNREC)
- ›Environmental Protection Agency (EPA)
- ›Transportation planners in New Castle County
- ›Industries contributing to air quality in the region
The receipts are official. The summary is ours.
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