Delaware Superfund (NPL) Sites
Clicking on the site name should take you directly to a U.S. EPA summary page for that site. If not, please let me know.
Location: New Castle, New Castle County
Narrative: An abandoned sand and gravel quarry subsequently used to dispose of nearly two million cubic yards of municipal and industrial waste. Various chemicals now contaminate groundwater downgradient of the site.
Contaminants: Arsenic · Benzene · bis(2-chloroethyl)ether · Chromium · 1,2-Dichloroethane · Manganese · Mercury · Thallium
Location: Blades, Sussex County
Narrative: Metals associated with electroplating processes and PFAS were discovered in eight residential wells and three public drinking water supply wells.
Contaminants: Chromium · Cobalt · Nickel · PFAs · Zinc
Location: Delaware City, New Castle County
Narrative: PVC plastic manufacturing facility where disposal of wastes into pits and lagoons resulted in soil and groundwater contamination.
Contaminants: 1,2-Dichloroethane · Trichloroethene · Vinyl Chloride
Delaware Sand & Gravel Landfill
Location: New Castle, New Castle County
Narrative: Landfill that accepted a variety of wastes including drums containing chemicals, resulting in soil and groundwater contamination.
Contaminants: Antimony · Arsenic · Benzene · bis(2-Chloroethyl)ether · Chromium · 1,2-Dichloroethane · Lead · Methylene Chloride · PCBs · Thallium · Vanadium
Location: Dover, Kent County
Contaminants: Benzene · Carbon Tetrachloride · 1,2-Dichloroethene · Ethylbenzene · Tetrachloroethene · Toluene · Trichloroethene · Xylenes
Location: Dover, Kent County
Contaminants: Benzene · Ethylbenzene · PAHs · Toluene · Xylenes
Location: New Castle, New Castle County
Contaminants: PFAS · VOCs
E.I.Du Pont de Nemours (Newport Landfill
Location: Newport, New Castle County
Contaminants: Barium · Cadmium · Copper · Lead · Mercury · Zinc
Location: Georgetown, Sussex County
Contaminants: Tetrachloroethene
Location: Wilmington, New Castle County
Contaminants: Arsenic · Cadmium · Carbon Disulfide · Copper · Lead · Manganese · Zinc
Location: Kirkwood, New Castle County
Contaminants: Arsenic · Cadmium · Ethylbenzene · Lead · PCBs · Toluene
Location: Hockessing, New Castle County
Contaminants: Tetrachloroethene
Koppers Co., Inc. (Newport Plant)
Location: Newport, New Castle County
Contaminants: PAHs
Location: Millsboro, Sussex County
Contaminants: Trichloroethene
Location: Newark, New Castle County
Contaminants: Tetrachloroethene · Trichloroethene
Standard Chlorine of Delaware,Inc
Location: Delaware City, New Castle County
Contaminants: Chlorobenzene · 1,2-Dichlorobenzene · 1,3-Dichlorobenzene · 1,4-Dichlorobenzene · Trichlorobenzenes
Location: Wilmington, New Castle County
Contaminants: Benzene · 1,2-Dichloroethane · Vinyl Chloride
Location: Cheswold, Kent County
Contaminants: Trichloroethene
Deleted: 2022
Coker's Sanitation Service Landfills
Location: Cheswold, Kent County
Contaminants: Ethylbenzene · Styrene
Deleted: 2011
Location: New Castle, New Castle County
Contaminants: TRIS
Deleted: 1996
Location: New Castle, New Castle County
Contaminants: Arsenic · Cadmium · Chromium · Lead · Nickel
Deleted: 1989
Location: Mt. Pleasant, New Castle County
Contaminants: Creosote · PAHs
Deleted: 1997
Location: Laurel, Sussex County
Contaminants: Benzene · Vinyl Chloride
Deleted: 2001
Location: Smyrna, Kent County
Contaminants: Chromium · 1,1-Dichloroethane · 1,1,1-Trichloroethane
Deleted: 2004
Location: Dover, Kent County
Contaminants: Arsenic · Benzene · Chromium · Lead · PCBs
Deleted: 2003
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