New Castle Spill
Deleted NPL SiteNew Castle County, DE
According to the EPA Superfund Enterprise Management System, New Castle Spill in New Castle County, DE is listed with NPL status Deleted NPL Site. Its Hazard Ranking System (HRS) score is 38.33. The public extract catalogs 1 contaminant record for this site. EPA marks construction of the cleanup remedy as complete. The site has been deleted from the NPL in the EPA record. NPL listing is a cleanup-authority designation, not a measured health-risk score.
Superfund National Priorities List inclusion (status and HRS score shown above) is the EPA's formal designation that a contaminated site qualifies for long-term federal cleanup authority under the Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA). A federal-facility classification means the site is owned or operated by a federal agency, which routes cleanup responsibility differently than a privately owned site.
"Construction Complete" (status shown above) is an EPA milestone marking that the physical remedy work is finished, not that the site has exited EPA oversight; long-term monitoring can continue afterward. Deletion from the NPL is a separate, later step the EPA takes only once it determines every planned response action is finished.
NPL listing is a cleanup-authority designation in the EPA record, not a quantitative health-risk score. HRS scores of 28.50 or above qualify a site for the NPL under the EPA screening model (toxicity, pathways, waste quantity, and affected population factors). For current site conditions and official community notices, see the EPA Regional Superfund profile and the Delaware environmental agency.
What is the cleanup status of this Superfund site?
Contaminants
| Contaminant | Media |
|---|---|
| TRIS(3-CHLOROPROPYL)PHOSPHATE | Groundwater |
Location
Other Superfund Sites in Delaware
| Site Name | Status | HRS Score |
|---|---|---|
| Army Creek Landfill | NPL Site | 69.92 |
| Blades Groundwater | NPL Site | 50.00 |
| Chem-Solv, Inc. | Deleted NPL Site | 37.93 |
| Coker's Sanitation Service Landfills | Deleted NPL Site | 52.15 |
| Delaware City PVC Plant | NPL Site | 30.55 |
| Delaware Sand & Gravel Landfill | NPL Site | 46.60 |
| Dover Air Force Base | NPL Site | 35.89 |
| Dover Gas Light Co. | NPL Site | 35.57 |
| E.I. du Pont de Nemours & Co., Inc. (Newport Pigment Plant Landfill) | NPL Site | 51.91 |
| East Basin Road Groundwater | NPL Site | 50.00 |
How does this site's HRS score compare in Delaware?
Of the 26 Delaware Superfund sites with a scored Hazard Ranking System (HRS) evaluation, New Castle Spill ranks #11 by score (38.33).
Either side of it: Newark South Ground Water Plume (50.00), Delaware Sand & Gravel Landfill (46.60), NCR Corp. (Millsboro Plant) (38.21), Chem-Solv, Inc. (37.93)
Frequently Asked Questions
What is the New Castle Spill Superfund site? ▼
What does NPL listing mean for New Castle Spill? ▼
What is the HRS score for New Castle Spill? ▼
What contaminants are at the New Castle Spill site? ▼
What is the cleanup status of New Castle Spill? ▼
NPL listing is a cleanup-authority designation in the EPA record, not a quantitative health-risk score. See Superfund Sites Explained for how the National Priorities List, Hazard Ranking System, and cleanup phases work.
Read our methodology - how this data is sourced, computed, and verified.