Dover Air Force Base

NPL Site
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Dover, DE

According to the EPA Superfund Enterprise Management System, Dover Air Force Base in Dover, DE is listed with NPL status NPL Site. Its Hazard Ranking System (HRS) score is 35.89. The public extract catalogs 107 contaminant records for this site. EPA marks construction of the cleanup remedy as complete. NPL listing is a cleanup-authority designation, not a measured health-risk score.

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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?

NPL Status
NPL Site
Federal Facility
No
Construction Complete
Yes
HRS Score
35.89
Deleted from NPL
No

Contaminants

Contaminant Media
1,1,1-TRICHLOROETHANE Groundwater
1,1,1-TRICHLOROETHANE Soil
1,1,2,2-TETRACHLOROETHANE Groundwater
1,1-DICHLOROETHANE Groundwater
1,1-DICHLOROETHANE Soil
1,1-DICHLOROETHENE Groundwater
1,1-DICHLOROETHENE Soil
1,2-DICHLOROETHANE Groundwater
1,2-DICHLOROETHENE (CIS AND TRANS MIXTURE) Groundwater
1,4-DICHLOROBENZENE Groundwater
2-BUTANONE (METHYL ETHYL KETONE) Soil
2-HEXANONE Groundwater
2-METHYLNAPHTHALENE Groundwater
2-METHYLNAPHTHALENE Soil
4-CHLORO-3-METHYLPHENOL Groundwater
4-CHLORO-3-METHYLPHENOL Soil
4-METHYL-2-PENTANONE (METHYL ISOBUTYL KETONE) Soil
ACETONE Soil
ALPHA-CHLORDANE Soil
ALPHA-HEXACHLOROCYCLOHEXANE Groundwater
ALPHA-HEXACHLOROCYCLOHEXANE Soil
ANTIMONY Groundwater
AROCLOR 1016 Soil
AROCLOR 1248 Soil
AROCLOR 1260 Soil
ARSENIC Groundwater
ARSENIC Soil
BENZENE Groundwater
BENZENE Soil
BENZO(B)FLUORANTHENE Soil
BENZO(GHI)PERYLENE Soil
BENZO(K)FLUORANTHENE Soil
BENZO[A]ANTHRACENE Soil
BENZO[A]PYRENE Soil
BERYLLIUM Groundwater
BERYLLIUM Soil
BETA-HEXACHLOROCYCLOHEXANE Groundwater
BIS(2-CHLOROETHOXY) METHANE Groundwater
BIS(2-ETHYLHEXYL)PHTHALATE Groundwater
BIS(2-ETHYLHEXYL)PHTHALATE Soil
CADMIUM Groundwater
CADMIUM Soil
CALCIUM Groundwater
CALCIUM Soil
CARBON TETRACHLORIDE Groundwater
CHLOROBENZENE Groundwater
CHLOROBENZENE Soil
CHLOROETHANE Soil
CHLOROETHENE (VINYL CHLORIDE) Groundwater
CHRYSENE Soil
CIS-1,2-DICHLOROETHENE Groundwater
CIS-1,2-DICHLOROETHENE Soil
COBALT Groundwater
COBALT Soil
DELTA-HEXACHLOROCYCLOHEXANE Groundwater
DELTA-HEXACHLOROCYCLOHEXANE Soil
DIBENZOFURAN Soil
DIBUTYL PHTHALATE Soil
DICHLOROMETHANE (METHYLENE CHLORIDE) Soil
DIELDRIN Groundwater
DIELDRIN Soil
ENDOSULFAN I Soil
ENDOSULFAN II Groundwater
ENDOSULFAN II Soil
ENDOSULFAN SULFATE Groundwater
ENDOSULFAN SULFATE Soil
ENDRIN Soil
ENDRIN ALDEHYDE Groundwater
ENDRIN KETONE Groundwater
ENDRIN KETONE Soil
ETHYLBENZENE Groundwater
ETHYLBENZENE Soil
FLUORANTHENE Soil
GAMMA-CHLORDANE Soil
GAMMA-HEXACHLOROCYCLOHEXANE (LINDANE) Groundwater
GAMMA-HEXACHLOROCYCLOHEXANE (LINDANE) Soil
HEPTACHLOR Groundwater
HEPTACHLOR EPOXIDE Groundwater
HEPTACHLOR EPOXIDE Soil
INDENO(1,2,3-CD)PYRENE Soil
LEAD Soil
MAGNESIUM Groundwater
MAGNESIUM Soil
MANGANESE Groundwater
MANGANESE Soil
N,N-DIPROPYLNITROUS AMIDE Groundwater
NAPHTHALENE Soil
NICKEL Groundwater
P,P'-DDD Soil
P,P'-DDE Soil
P,P'-DDT Soil
PHENANTHRENE Groundwater
PHENANTHRENE Soil
POTASSIUM Groundwater
PYRENE Soil
SILICON Soil
SILVER Soil
SODIUM Groundwater
TETRACHLOROETHENE Groundwater
TETRACHLOROETHENE Soil
THALLIUM Soil
TOLUENE Groundwater
TOLUENE Soil
TOTAL PETROLEUM HYDROCARBONS (TPH) Soil
TRICHLOROETHENE Groundwater
TRICHLOROETHENE Soil
XYLENE (MIXED ISOMERS) Soil

Location

City
Dover
Coordinates
39.1278, -75.4667

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 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
Georgetown North 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, Dover Air Force Base ranks #14 by score (35.89).

Either side of it: NCR Corp. (Millsboro Plant) (38.21), Chem-Solv, Inc. (37.93), Dover Gas Light Co. (35.57), Standard Chlorine of Delaware, Inc. (35.42)

Frequently Asked Questions

What is the Dover Air Force Base Superfund site?
Dover Air Force Base is an active National Priorities List (NPL) Superfund site located in Dover, DE. It has a Hazard Ranking System (HRS) score of 35.89 (rank #14 of 26 scored Delaware sites). Superfund sites are contaminated locations identified by the EPA for long-term cleanup under CERCLA.
What does NPL listing mean for Dover Air Force Base?
According to the EPA, National Priorities List (NPL) listing designates a site for long-term federal Superfund cleanup authority. It is a programmatic status in the Superfund Enterprise Management System, not a quantitative health-risk score for nearby residents. EPA records mark construction of the cleanup remedy as complete at this site. Site-specific conditions and community guidance are published by EPA Regional Superfund offices and the relevant state environmental agency.
What is the HRS score for Dover Air Force Base?
Dover Air Force Base's Hazard Ranking System (HRS) score is 35.89, placing it #14 of 26 Delaware Superfund sites with a scored HRS evaluation. Sites with a score of 28.50 or greater qualify for the NPL; the model weighs contaminant toxicity, waste quantity, release likelihood, and affected population, and is not a community health diagnosis.
What contaminants are at the Dover Air Force Base site?
The EPA public Superfund extract catalogs 107 contaminants at Dover Air Force Base, documented through the remedial investigation process. Counts reflect listed records in that extract, not a complete inventory of every substance ever present.
What is the cleanup status of Dover Air Force Base?
Dover Air Force Base is currently NPL Site on the National Priorities List. Construction of the cleanup remedy has been completed. The EPA Superfund cleanup process includes phases from preliminary assessment through post-construction completion.

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.

Related

Data sourced from the U.S. Environmental Protection Agency (EPA). See our methodology for details. Retrieved and formatted by PlainEnviro