Environmental Organizations Directory Environmental Organizations Directory Environmental Organizations Directory Environmental Organizations Directory Environmental Organizations Directory menu bar

Delaware NPL Sites


Eco-USA: NPL Sites: Delaware

Note: About NPL Site Links


Active Sites

Jump to: Deleted Sites


Army Creek Landfill

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


Blades Groundwater

Location: Blades, Sussex County

Contaminants: Chromium · Cobalt · Nickel · PFAs · Zinc


Chem-Solv, Inc.

Location: Cheswold, Kent County

Contaminants: Trichloroethene


Delaware City PVC Plant

Location: Delaware City, New Castle County

Contaminants: 1,2-Dichloroethane · Trichloroethene · Vinyl Chloride


Delaware Sand & Gravel Landfill

Location: New Castle, New Castle County

Contaminants: Antimony · Arsenic · Benzene · bis(2-Chloroethyl)ether · Chromium · 1,2-Dichloroethane · Lead · Methylene Chloride · PCBs · Thallium · Vanadium


Dover Air Force Base

Location: Dover, Kent County

Contaminants: Benzene · Carbon Tetrachloride · 1,2-Dichloroethene · Ethylbenzene · Tetrachloroethene · Toluene · Trichloroethene · Xylenes


Dover Gas Light Co.

Location: Dover, Kent County

Contaminants: Benzene · Ethylbenzene · PAHs · Toluene · Xylenes


E.I.Du Pont de Nemours (Newport Landfill

Location: Newport, New Castle County

Contaminants: Barium · Cadmium · Copper · Lead · Mercury · Zinc


Halby Chemical Co.

Location: Wilmington, New Castle County

Contaminants: Arsenic · Cadmium · Carbon Disulfide · Copper · Lead · Manganese · Zinc


Harvey & Knott Drum, Inc.

Location: Kirkwood, New Castle County

Contaminants: Arsenic · Cadmium · Ethylbenzene · Lead · PCBs · Toluene


Hockessin Groundwater

Location: Hockessing, New Castle County

Contaminants: Tetrachloroethene


Koppers Co., Inc. (Newport Plant)

Location: Newport, New Castle County

Contaminants: PAHs


NCR Corp. (Millsboro Plant)

Location: Millsboro, Sussex County

Contaminants: Trichloroethene


Newark South Groundwater

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


Tybouts Corner Landfill

Location: Wilmington, New Castle County

Contaminants: Benzene · 1,2-Dichloroethane · Vinyl Chloride


Deleted Sites

Jump to: Active Sites · Top


Coker's Sanitation Service Landfills

Location: Cheswold, Kent County

Contaminants: Ethylbenzene · Styrene

Deleted: 2011


New Castle Spill

Location: New Castle, New Castle County

Contaminants: TRIS

Deleted: 1996


New Castle Steel

Location: New Castle, New Castle County

Contaminants: Arsenic · Cadmium · Chromium · Lead · Nickel

Deleted: 1989


Sealand Limited

Location: Mt. Pleasant, New Castle County

Contaminants: Creosote · PAHs

Deleted: 1997


Sussex County Landfill No. 5

Location: Laurel, Sussex County

Contaminants: Benzene · Vinyl Chloride

Deleted: 2001


Tyler Refrigeration Pit

Location: Smyrna, Kent County

Contaminants: Chromium · 1,1-Dichloroethane · 1,1,1-Trichloroethane

Deleted: 2004


Wildcat Landfill

Location: Dover, Kent County

Contaminants: Arsenic · Benzene · Chromium · Lead · PCBs

Deleted: 2003