Koppers Co., Inc. (Newport Plant)
NPL SiteNewport, DE
According to the EPA Superfund Enterprise Management System, Koppers Co., Inc. (Newport Plant) in Newport, DE is listed with NPL status NPL Site. Its Hazard Ranking System (HRS) score is 33.56. The public extract catalogs 136 contaminant records for this site. 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 |
|---|---|
| 1,1,2,2-TETRACHLOROETHANE | Soil |
| 1,1,2-TRICHLOROETHANE | Groundwater |
| 1,2-DIHYDROACENAPHTHYLENE | Groundwater |
| 1,2-DIHYDROACENAPHTHYLENE | Soil |
| 2,3,7,8-TETRACHLORODIBENZO-p-DIOXIN (TCDD) TOXICITY EQUIVALENTS (TEq) | Groundwater |
| 2,3,7,8-TETRACHLORODIBENZO-p-DIOXIN (TCDD) TOXICITY EQUIVALENTS (TEq) | Soil |
| 2,4-DIMETHYLPHENOL | Groundwater |
| 2-BUTANONE (METHYL ETHYL KETONE) | Soil |
| 2-HEXANONE | Groundwater |
| 2-HEXANONE | Soil |
| 2-METHYLNAPHTHALENE | Groundwater |
| 2-METHYLNAPHTHALENE | Soil |
| 2-METHYLPHENOL (O-CRESOL) | Groundwater |
| 4-METHYL-2-PENTANONE (METHYL ISOBUTYL KETONE) | Groundwater |
| 4-METHYLPHENOL (P-CRESOL) | Groundwater |
| 9H-CARBAZOLE | Groundwater |
| 9H-CARBAZOLE | Soil |
| 9H-FLUORENE | Groundwater |
| 9H-FLUORENE | Soil |
| ACENAPHTHYLENE | Groundwater |
| ACENAPHTHYLENE | Soil |
| ACETONE | Groundwater |
| ACETONE | Soil |
| ALPHA-CHLORDANE | Groundwater |
| ALPHA-CHLORDANE | Soil |
| ALPHA-HEXACHLOROCYCLOHEXANE | Groundwater |
| ALUMINUM | Groundwater |
| ALUMINUM | Soil |
| ANTHRACENE | Groundwater |
| ANTHRACENE | Soil |
| ANTIMONY | Groundwater |
| ANTIMONY | Soil |
| AROCLOR 1254 | Soil |
| AROCLOR 1260 | Soil |
| ARSENIC | Groundwater |
| ARSENIC | Soil |
| BARIUM | Groundwater |
| BARIUM | Soil |
| BENZENE | Groundwater |
| BENZENE | Soil |
| BENZO(B)FLUORANTHENE | Groundwater |
| BENZO(B)FLUORANTHENE | Soil |
| BENZO(GHI)PERYLENE | Groundwater |
| BENZO(GHI)PERYLENE | Soil |
| BENZO(K)FLUORANTHENE | Groundwater |
| BENZO(K)FLUORANTHENE | Soil |
| BENZO[A]ANTHRACENE | Groundwater |
| BENZO[A]ANTHRACENE | Soil |
| BENZO[A]PYRENE | Groundwater |
| BENZO[A]PYRENE | Soil |
| BERYLLIUM | Groundwater |
| BERYLLIUM | Soil |
| BIS(2-ETHYLHEXYL)PHTHALATE | Groundwater |
| BIS(2-ETHYLHEXYL)PHTHALATE | Soil |
| BUTYL BENZYL PHTHALATE | Groundwater |
| CADMIUM | Groundwater |
| CADMIUM | Soil |
| CARBON DISULFIDE | Soil |
| CHLOROBENZENE | Groundwater |
| CHROMIUM | Soil |
| CHRYSENE | Groundwater |
| CHRYSENE | Soil |
| COBALT | Groundwater |
| COBALT | Soil |
| COPPER | Groundwater |
| COPPER | Soil |
| DI-N-OCTYL PHTHALATE | Groundwater |
| DIBENZO(A,H)ANTHRACENE | Soil |
| DIBENZOFURAN | Groundwater |
| DIBENZOFURAN | Soil |
| DIBUTYL PHTHALATE | Groundwater |
| DIBUTYL PHTHALATE | Soil |
| DICHLOROMETHANE (METHYLENE CHLORIDE) | Groundwater |
| DIELDRIN | Groundwater |
| DIELDRIN | Soil |
| DIETHYL PHTHALATE | Soil |
| ENDOSULFAN II | Groundwater |
| ENDOSULFAN II | Soil |
| ENDOSULFAN SULFATE | Groundwater |
| ENDRIN | Groundwater |
| ENDRIN | Soil |
| ENDRIN KETONE | Soil |
| ETHYLBENZENE | Groundwater |
| ETHYLBENZENE | Soil |
| FLUORANTHENE | Groundwater |
| FLUORANTHENE | Soil |
| GAMMA-CHLORDANE | Groundwater |
| HEPTACHLOR | Groundwater |
| HEPTACHLOR | Soil |
| HEPTACHLOR EPOXIDE | Groundwater |
| HEPTACHLOR EPOXIDE | Soil |
| INDENO(1,2,3-CD)PYRENE | Groundwater |
| INDENO(1,2,3-CD)PYRENE | Soil |
| IRON | Groundwater |
| IRON | Soil |
| LEAD | Groundwater |
| LEAD | Soil |
| MANGANESE | Groundwater |
| MANGANESE | Soil |
| MERCURY | Soil |
| METHOXYCHLOR | Soil |
| NAPHTHALENE | Groundwater |
| NAPHTHALENE | Soil |
| NICKEL | Groundwater |
| NICKEL | Soil |
| P,P'-DDD | Groundwater |
| P,P'-DDD | Soil |
| P,P'-DDE | Groundwater |
| P,P'-DDE | Soil |
| P,P'-DDT | Groundwater |
| P,P'-DDT | Soil |
| PENTACHLOROPHENOL | Groundwater |
| PENTACHLOROPHENOL | Soil |
| PHENANTHRENE | Groundwater |
| PHENANTHRENE | Soil |
| PHENOL | Groundwater |
| POLYCYCLIC AROMATIC HYDROCARBONS (PAHS) | Sediment |
| POLYCYCLIC AROMATIC HYDROCARBONS (PAHS) | Soil |
| PYRENE | Groundwater |
| PYRENE | Soil |
| SELENIUM | Groundwater |
| SELENIUM | Soil |
| SILVER | Soil |
| STYRENE | Groundwater |
| STYRENE | Soil |
| TETRACHLOROETHENE | Soil |
| THALLIUM | Groundwater |
| THALLIUM | Soil |
| TOLUENE | Groundwater |
| TOLUENE | Soil |
| VANADIUM | Groundwater |
| VANADIUM | Soil |
| XYLENE (MIXED ISOMERS) | Groundwater |
| XYLENE (MIXED ISOMERS) | Soil |
| ZINC | Groundwater |
| ZINC | Soil |
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, Koppers Co., Inc. (Newport Plant) ranks #18 by score (33.56).
Either side of it: Standard Chlorine of Delaware, Inc. (35.42), Tyler Refrigeration Pit (33.94), Sealand Limited (33.10), Halby Chemical Co. (30.90)
Frequently Asked Questions
What is the Koppers Co., Inc. (Newport Plant) Superfund site? ▼
What does NPL listing mean for Koppers Co., Inc. (Newport Plant)? ▼
What is the HRS score for Koppers Co., Inc. (Newport Plant)? ▼
What contaminants are at the Koppers Co., Inc. (Newport Plant) site? ▼
What is the cleanup status of Koppers Co., Inc. (Newport Plant)? ▼
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.